.forgejo/workflows/dco.yml

@@ -13,9 +13,9 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.23'
+          go-version: '1.21'
 
       - name: Run commit format checker
-        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v2
         with:
           from: 'origin/${{ github.event.pull_request.base.ref }}'

.forgejo/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.23'
+          go-version: '1.21'
           cache: true
 
       - name: Install linters
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.22', '1.23' ]
+        go_versions: [ '1.20', '1.21' ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -48,7 +48,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.23'
+          go-version: '1.21'
           cache: true
 
       - name: Run tests
@@ -63,7 +63,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.23'
+          go-version: '1.21'
           cache: true
 
       - name: Install staticcheck

.gitattributes

@@ -1,4 +1,2 @@
 /**/*.pb.go -diff -merge
 /**/*.pb.go linguist-generated=true
-/**/*_easyjson.go -diff -merge
-/**/*_easyjson.go linguist-generated=true

.golangci.yml

@@ -12,8 +12,7 @@ run:
 # output configuration options
 output:
   # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
-  formats:
+  format: tab
-    - format: tab
 
 # all available settings of specific linters
 linters-settings:

.pre-commit-config.yaml

@@ -2,6 +2,13 @@ ci:
   autofix_prs: false
 
 repos:
+  - repo: https://github.com/jorisroovers/gitlint
+    rev:  v0.19.1
+    hooks:
+      - id: gitlint
+        stages: [commit-msg]
+      - id: gitlint-ci
+
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.4.0
     hooks:
@@ -35,7 +42,7 @@ repos:
     hooks:
        - id: go-unit-tests
          name: go unit tests
-         entry: make test GOFLAGS=''
+         entry: make test
          pass_filenames: false
          types: [go]
          language: system

Makefile

@@ -1,12 +1,10 @@
 #!/usr/bin/make -f
 
-TRUECLOUDLAB_LINT_VERSION ?= 0.0.6
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.2
 TMP_DIR := .cache
 OUTPUT_LINT_DIR ?= $(shell pwd)/bin
-LINT_VERSION ?= 1.60.1
+LINT_VERSION ?= 1.55.1
 LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
-EASYJSON_VERSION ?= $(shell go list -f '{{.Version}}' -m github.com/mailru/easyjson)
-EASYJSON_DIR ?= $(shell pwd)/bin/easyjson-$(EASYJSON_VERSION)
 
 # Run all code formatters
 fmts: fmt imports
@@ -22,10 +20,9 @@ imports:
 	@goimports -w .
 
 # Run Unit Test with go test
-test: GOFLAGS ?= "-count=1"
 test:
 	@echo "⇒ Running go test"
-	@GOFLAGS="$(GOFLAGS)" go test ./...
+	@go test ./... -count=1
 
 # Activate pre-commit hooks
 pre-commit:
@@ -63,15 +60,3 @@ staticcheck-install:
 # Run staticcheck
 staticcheck-run:
 	@staticcheck ./...
-
-easyjson-install:
-	@rm -rf $(EASYJSON_DIR)
-	@mkdir -p $(EASYJSON_DIR)
-	@GOBIN=$(EASYJSON_DIR) go install github.com/mailru/easyjson/...@$(EASYJSON_VERSION)
-
-generate:
-	@if [ ! -d "$(EASYJSON_DIR)" ]; then \
-		make easyjson-install; \
-	fi
-	find ./ -name "_easyjson.go" -exec rm -rf {} \;
-	$(EASYJSON_DIR)/easyjson ./pkg/chain/chain.go

chain.go

@@ -0,0 +1,229 @@
+package policyengine
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// Engine ...
+type Engine interface {
+	// IsAllowed returns status for the operation after all checks.
+	// The second return value signifies whether a matching rule was found.
+	IsAllowed(name Name, namespace string, r Request) (Status, bool)
+}
+
+// ChainID is the ID of rule chain.
+type ChainID string
+
+type Chain struct {
+	ID ChainID
+
+	Rules []Rule
+}
+
+func (c *Chain) Bytes() []byte {
+	data, err := json.Marshal(c)
+	if err != nil {
+		panic(err)
+	}
+	return data
+}
+
+func (c *Chain) DecodeBytes(b []byte) error {
+	return json.Unmarshal(b, c)
+}
+
+type Rule struct {
+	Status Status
+	// Actions the operation is applied to.
+	Actions Actions
+	// List of the resources the operation is applied to.
+	Resources Resources
+	// True iff individual conditions must be combined with the logical OR.
+	// By default AND is used, so _each_ condition must pass.
+	Any       bool
+	Condition []Condition
+}
+
+type Actions struct {
+	Inverted bool
+	Names    []string
+}
+
+type Resources struct {
+	Inverted bool
+	Names    []string
+}
+
+type Condition struct {
+	Op     ConditionType
+	Object ObjectType
+	Key    string
+	Value  string
+}
+
+type ObjectType byte
+
+const (
+	ObjectResource ObjectType = iota
+	ObjectRequest
+	ObjectActor
+)
+
+type ConditionType byte
+
+// TODO @fyrchik: reduce the number of conditions.
+// Everything from here should be expressable, but we do not need them all.
+// https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition_operators.html
+const (
+	// String condition operators.
+	CondStringEquals ConditionType = iota
+	CondStringNotEquals
+	CondStringEqualsIgnoreCase
+	CondStringNotEqualsIgnoreCase
+	CondStringLike
+	CondStringNotLike
+	CondStringLessThan
+	CondStringLessThanEquals
+	CondStringGreaterThan
+	CondStringGreaterThanEquals
+
+	// Numeric condition operators.
+	CondNumericEquals
+	CondNumericNotEquals
+	CondNumericLessThan
+	CondNumericLessThanEquals
+	CondNumericGreaterThan
+	CondNumericGreaterThanEquals
+)
+
+func (c ConditionType) String() string {
+	switch c {
+	case CondStringEquals:
+		return "StringEquals"
+	case CondStringNotEquals:
+		return "StringNotEquals"
+	case CondStringEqualsIgnoreCase:
+		return "StringEqualsIgnoreCase"
+	case CondStringNotEqualsIgnoreCase:
+		return "StringNotEqualsIgnoreCase"
+	case CondStringLike:
+		return "StringLike"
+	case CondStringNotLike:
+		return "StringNotLike"
+	case CondStringLessThan:
+		return "StringLessThan"
+	case CondStringLessThanEquals:
+		return "StringLessThanEquals"
+	case CondStringGreaterThan:
+		return "StringGreaterThan"
+	case CondStringGreaterThanEquals:
+		return "StringGreaterThanEquals"
+	case CondNumericEquals:
+		return "NumericEquals"
+	case CondNumericNotEquals:
+		return "NumericNotEquals"
+	case CondNumericLessThan:
+		return "NumericLessThan"
+	case CondNumericLessThanEquals:
+		return "NumericLessThanEquals"
+	case CondNumericGreaterThan:
+		return "NumericGreaterThan"
+	case CondNumericGreaterThanEquals:
+		return "NumericGreaterThanEquals"
+	default:
+		return "unknown condition type"
+	}
+}
+
+func (c *Condition) Match(req Request) bool {
+	var val string
+	switch c.Object {
+	case ObjectResource:
+		val = req.Resource().Property(c.Key)
+	case ObjectRequest:
+		val = req.Property(c.Key)
+	default:
+		panic(fmt.Sprintf("unknown condition type: %d", c.Object))
+	}
+
+	switch c.Op {
+	default:
+		panic(fmt.Sprintf("unimplemented: %d", c.Op))
+	case CondStringEquals:
+		return val == c.Value
+	case CondStringNotEquals:
+		return val != c.Value
+	case CondStringEqualsIgnoreCase:
+		return strings.EqualFold(val, c.Value)
+	case CondStringNotEqualsIgnoreCase:
+		return !strings.EqualFold(val, c.Value)
+	case CondStringLike:
+		return globMatch(val, c.Value)
+	case CondStringNotLike:
+		return !globMatch(val, c.Value)
+	case CondStringLessThan:
+		return val < c.Value
+	case CondStringLessThanEquals:
+		return val <= c.Value
+	case CondStringGreaterThan:
+		return val > c.Value
+	case CondStringGreaterThanEquals:
+		return val >= c.Value
+	}
+}
+
+func (r *Rule) Match(req Request) (status Status, matched bool) {
+	found := len(r.Resources.Names) == 0
+	for i := range r.Resources.Names {
+		if globMatch(req.Resource().Name(), r.Resources.Names[i]) != r.Resources.Inverted {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return NoRuleFound, false
+	}
+	for i := range r.Actions.Names {
+		if globMatch(req.Operation(), r.Actions.Names[i]) != r.Actions.Inverted {
+			return r.matchCondition(req)
+		}
+	}
+	return NoRuleFound, false
+}
+
+func (r *Rule) matchCondition(obj Request) (status Status, matched bool) {
+	if r.Any {
+		return r.matchAny(obj)
+	}
+	return r.matchAll(obj)
+}
+
+func (r *Rule) matchAny(obj Request) (status Status, matched bool) {
+	for i := range r.Condition {
+		if r.Condition[i].Match(obj) {
+			return r.Status, true
+		}
+	}
+	return NoRuleFound, false
+}
+
+func (r *Rule) matchAll(obj Request) (status Status, matched bool) {
+	for i := range r.Condition {
+		if !r.Condition[i].Match(obj) {
+			return NoRuleFound, false
+		}
+	}
+	return r.Status, true
+}
+
+func (c *Chain) Match(req Request) (status Status, matched bool) {
+	for i := range c.Rules {
+		status, matched := c.Rules[i].Match(req)
+		if matched {
+			return status, true
+		}
+	}
+	return NoRuleFound, false
+}

chain_names.go

@@ -1,4 +1,4 @@
-package chain
+package policyengine
 
 // Name represents the place in the request lifecycle where policy is applied.
 type Name string
@@ -7,7 +7,4 @@ const (
 	// Ingress represents chains applied when crossing user/storage network boundary.
 	// It is not applied when talking between nodes.
 	Ingress Name = "ingress"
-
-	// S3 represents chains applied when crossing user/s3 network boundary.
-	S3 Name = "s3"
 )

chain_test.go

@@ -0,0 +1,33 @@
+package policyengine
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestEncodeDecode(t *testing.T) {
+	expected := Chain{
+		Rules: []Rule{
+			{
+				Status: Allow,
+				Actions: Actions{Names: []string{
+					"native::PutObject",
+				}},
+				Resources: Resources{Names: []string{"*"}},
+				Condition: []Condition{
+					{
+						Op:    CondStringEquals,
+						Key:   "Name",
+						Value: "NNS",
+					},
+				},
+			},
+		},
+	}
+	data := expected.Bytes()
+
+	var actual Chain
+	require.NoError(t, actual.DecodeBytes(data))
+	require.Equal(t, expected, actual)
+}

docs/ape.md

@@ -1,85 +0,0 @@
-# Access policy engine
-
-## General overview
-
-### Purpose
-
-Access policy engine (APE) is aimed at checking if a request can be performed over a resource by looking up the set chains of rules.
-
-#### Terms
-
-| Term           | Description                                                    | Structure overview     |
-| -------------- | -------------------------------------------------------------- | -------------- |
-| `Request`      | The action that is being performed on the `Resource`.                          | <ul><li>`Operation` - `GetObject`,`PutObject` etc.;</li><li>`Properties` - actor's public key, actor's attributes;</li><li>`Resource`.</li></ul> |
-| `Resource`     | The object that the request is being performed on. Check also [resource.md](./resource.md).   |  <ul><li>`Name` - strictly formatted string value;</li><li>`Properties`.</li></ul> |
-| `Chain`        | A chain of `Rule`-s defined for a specific target. Chains are strictly distinguished by `Name`-s , i.e. chains with name `ingress` are not intersected with chains with name `s3`. Chains are stored in serialized format.       | <ul><li>Base64-encoded `ID`;</li><li>List of `Rule`-s;</li><li>`MatchType` - defines rule status selection priority.</li></ul> |
-| `Rule`         | `Rule` defines which status is returned if `Request` matches all conditions.                                                         | <ul><li>`Status`: `Allow`, `AccessDenied`, `QuotaLimitReached`, `NoRuleFound`;</li><li>`Actions` - operation defined by a schema (`GetObject`, `PutContainer` etc.);</li><li>`Resources`;</li><li>`Any` - if `true` then `Reqeust` matches `Rule` if any `Condition` is `true`;</li><li>`Conditions`.</li></ul> |
-| `Name`   | `Name` of a chain (do not confuse with chain ID). `Name` defines a layer of `Chain`'s usage, so chains are distinguished by `Name`-s. Basically, `Name` refers to a protocol.                                                       | String value (`ingress`, `s3`, `iam`).      |
-| `Target`       | A scope of request. `Target` can be either simple (only namespace; only container; only user; only groups) or compound (namespace + container). | <ul><li>`Namespace`;</li><li>`Container`;</li><li>`User`;</li><li>`Groups`.</li></ul> |
-| `Engine`       | `Engine` checks a request in a scope defined by `Target`. First, it is trying to match a request with rules defined in `LocalOverrideStorage` and, then, in `MorphRuleChainStorage`.                                                          | <ul><li>`LocalOverrideStorage` - chains stored in the local override storage have the highest priority</li><li>`MorphRuleChainStorage` - basically, chains stored in `Policy` contract;</li><li>`ChainRouter` - looks up chains and try to match them with `Request`.</li></ul> |
-
-#### Details
-
-Here some entities are overviewed in more detail.
-
-##### Resource
-
-`Resource`'s name is strictly formatted, the format is defined by a schema (`native`, `aws` etc.). Examples:
-
-```bash
-# The resource is the particular object with the address within Root namespace
-native:object//HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj/EbxzAdz5LB4uqxuz6crWKAumBNtZyK2rKsqQP7TdZvwr
-# The resource is all objects within the container within Root namespace
-native:object//HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj/*
-# The resource is the particular container within the namespace
-native:container/namespace1/HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj
-# The resource is all containers within the namespace
-native:container/namespace1/*
-```
-
-##### Rule
-
-`Rule` works out if:
-
- 1. a requests's operation matches the rule's `Actions`;
- 2. resource name matches the rule's `Resources`;
- 3. if all (or at least one if `Any=true`) conditions in `Condition` is met. Each condition defines how to retrieve
-and compare the retrieved value. If `Condition`'s `Object` is set to `Resource` then the value is retrieved from the
-resource's properties (example: container zone attribute). If `Object` is set to `Request`, the it's retrieved from the request's properties (example: actor's public key).
-
-###### Name matching
-
-`Resource`'s name in `Rule` may contain wildcard '*' that can be considered as a regular expression:
-
-```bash
-# The resource is all objects within the container within Root namespace
-native:object//HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj/*
-```
-
-If an incoming request has such a resource name, then names are matched:
-
-```bash
-# The resource is all objects within the container within Root namespace
-native:object//HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj/EbxzAdz5LB4uqxuz6crWKAumBNtZyK2rKsqQP7TdZvwr
-```
-
-If the incoming request has such a resource name that specifies a container's object within namespace, for instance, `namespicy`,
-then matching does not work out:
-
-```bash
-# The resource is all objects within the container within `namespicy` namespace:
-native:object/namespicy/HRwWbb1bJjRms33kkA21hy4JdPfARaH3fW9NfuNN6Fgj/EbxzAdz5LB4uqxuz6crWKAumBNtZyK2rKsqQP7TdZvwr
-```
-
-##### Engine
-
-`Engine` is trying to match the request against **the target** looking up chain rules, firstly, in `LocalOverrideStorage` (these rules are also known as *local overrides*) and then in `MorphRuleChainStorage` (contract `Policy`). Both storages iterate chain rules according to the specified priority of the targets: `namespace` -> `container` -> `user` -> `groups`.
-
-#### Diagrams
-
-The diagram demonstrates a scenario in Storage node. The request `A` cannot be performed as APE matched
-the request and returned `Access Denied` status. The request `B` is allowed and the client gets `OK` status.  
-![Storage node](images/ape/storage_node_ape.svg)
-
-The diagram demonstrates a complex scenario with S3, IAM and Storage node.
-![S3 and IAM](images/ape/s3_ape.svg)

docs/images/ape/s3_ape.puml

@@ -1,61 +0,0 @@
-@startuml s3 ape
-
-participant "Client" as client
-
-participant "IAM" as iam
-participant "IAM -> APE converter" as converter
-
-box "S3" #HotPink
-  participant "S3 gateway" as s3
-end box
-
-box "Access Policy Engine (as s3 middleware)" #LightPink
-  participant "Local override storage" as s3localOverrides
-  participant "Chain router" as s3chainRouter
-end box
-
-box "Policy contract (shared)" 
-  participant "Morph rule storage" as morphRuleStorage
-end box
-
-box "Access Policy Engine (as storage middleware)" #LightGreen
-  participant "Chain Router" as storageChainRouter
-  participant "Local override storage" as storageLocalOverrides
-end box
-
-box "Storage node" #Green
-  participant "Object service" as obj
-  participant "Control service" as control
-end box
-
-group Request IAM to set a policy
-  client -> iam : Set IAM policy
-  iam -> converter : Convert IAM policy
-  converter -> iam : Return APE chain
-  iam -> morphRuleStorage : Store IAM policy and APE chain
-  iam -> s3localOverrides : Set S3 local overrides
-  iam -> client : OK
-end
-
-group Request S3 to set a policy
-  client -> s3 : Set bucket policy
-  s3 -> converter : Convert IAM policy
-  converter -> s3 : Return APE chain
-  s3 -> morphRuleStorage : Store bucket policy and APE chain
-  s3 -> client : OK
-end
-
-group Get object
-  client -> s3: GetObject
-  s3 -> s3chainRouter: Check if APE allows request for S3
-  note over s3chainRouter: matching the request with overrides and rules
-  s3chainRouter -> s3: Status: ALLOW
-  s3 -> obj: Get object
-  obj -> storageChainRouter: Check if APE allows the request
-  note over storageChainRouter : matching the request with overrides and rules
-  storageChainRouter -> obj: Status: ALLOW
-  obj -> s3: Response: OK, Object
-  s3 -> client: Response: OK, Object
-end
-
-@enduml

docs/images/ape/storage_node_ape.puml

@@ -1,46 +0,0 @@
-@startuml storage node ape
-!pragma teoz true
-
-participant "Administrator" as administrator
-participant "Client" as client
-
-box "Storage node" #Green
-  participant "Object service" as obj
-  participant "Control service" as control
-end box
-
-box "Access Policy Engine" #LightGreen
-  participant "Local override storage" as localOverrides
-  participant "Chain Router" as chainRouter
-  participant "Morph rule storage" as morphRuleStorage
-end box
-
-group Set local override
-  client -> control: Add local override
-  control -> localOverrides: Save override in DB
-  localOverrides -> control: OK
-  control -> client: OK
-end
-
-group Update state in Policy contract
-  administrator -> morphRuleStorage: Add chain
-  morphRuleStorage -> administrator: OK
-end
-
-group Perform a request A
-  client -> obj : Sending a request
-  obj -> chainRouter: Check if APE allows the request
-  note over chainRouter : Fetches local overrides and rules defined for a target/targets and looks for a match
-  chainRouter -> obj: APE returns status: "ACCESS DENIED"
-  obj -> client: Response: "the request is denied"
-end
-
-group Perform a request B
-  client -> obj : Sending a request
-  obj -> chainRouter: Check if APE allows the request
-  note over chainRouter : Fetches local overrides and rules defined for a target/targets and looks for a match
-  chainRouter -> obj: APE returns status: "ALLOW"
-  obj -> client: Response: "OK"
-end
-
-@enduml

docs/policy_converters.md

@@ -1,439 +0,0 @@
-# Policy converters
-
-This repository contains converters that provide opportunities to
-transform [AWS IAM policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies.html) to inner
-FrostFS policy format. This document describes such transformations.
-
-## FrostFS
-
-As it was mentioned there are converters that transform AWS IAM policies to FrostFS.
-Here common examples of AWS:
-
-```json
-{
-  "Version": "2012-10-17",
-  "Statement": [
-    {
-      "Effect": "Allow",
-      "Action": [
-        "s3:*"
-      ],
-      "Resource": "*"
-    }
-  ]
-}
-```
-
-and FrostFS:
-
-```json
-{
-  "ID": "c29tZS1pZA==",
-  "Rules": [
-    {
-      "Status": "Allow",
-      "Actions": {
-        "Inverted": false,
-        "Names": [
-          "s3:*"
-        ]
-      },
-      "Resources": {
-        "Inverted": false,
-        "Names": [
-          "*"
-        ]
-      },
-      "Any": false,
-      "Condition": null
-    }
-  ],
-  "MatchType": "DenyPriority"
-}
-```
-
-policies.
-
-Despite there is only one FrostFS format, we have two converters (`s3` and `native`). The reason is S3 gateway and
-Storage node have different actions and resource naming:
-
-* S3 has [a lot of methods](https://docs.aws.amazon.com/AmazonS3/latest/API/API_Operations.html) and operates with
-  bucket/object
-* Storage node has only 6 container and 7 object methods and operates container/object (that has different format)
-
-The following sections describe each transformation more precisely ([common](#common) sections contains shared concepts)
-
-### Common
-
-#### Fields
-
-Rough json main fields mapping:
-
-| AWS policy field | FrostFS policy field | Comment                                                          |
-|------------------|----------------------|------------------------------------------------------------------|
-| `Version`        | -                    | Not applicable                                                   |
-| `Statement`      | `Rules`              |                                                                  |
-| `Effect`         | `Status`             |                                                                  |
-| `Action`         | `Actions.Names`      | `Actions.Inverted` = false                                       |
-| `NotAction`      | `Actions.Names`      | `Actions.Inverted` = true                                        |
-| `Resource`       | `Resources.Names`    | `Resources.Inverted` = false                                     |
-| `NotResource`    | `Resources.Names`    | `Resources.Inverted` = true                                      |
-| `Condition`      | `Condition`          | `Any` = false, that means the conditions must be hold altogether |
-| `Principal`      | -                    | Expressed via conditions (depends on s3/native converters)       |
-
-### Conditions
-
-Each condition in FrostFS policy can add requirements to some request/resource properties
-and consists of the following fields:
-
-| Field    | Description                                                                               |
-|----------|-------------------------------------------------------------------------------------------|
-| `Op`     | Condition type operation (`StringEqual`, `NumericEqual` etc)                              |                                                                   
-| `Object` | Property type to which condition can be applied (`Request` property, `Resource` property) |                                                                   
-| `Key`    | Property key                                                                              |                                                                   
-| `Value`  | Property value                                                                            |                                                                   
-
-Conditions operators:
-
-| AWS conditions operator     | FrostFS condition operator  | Comment                                                           |
-|-----------------------------|-----------------------------|-------------------------------------------------------------------|
-| `StringEquals`              | `StringEquals`              |                                                                   |
-| `StringNotEquals`           | `StringNotEquals`           |                                                                   |
-| `StringEqualsIgnoreCase`    | `StringEqualsIgnoreCase`    |                                                                   |
-| `StringNotEqualsIgnoreCase` | `StringNotEqualsIgnoreCase` |                                                                   |
-| `StringLike`                | `StringLike`                |                                                                   |
-| `StringNotLike`             | `StringNotLike`             |                                                                   |
-| `NumericEquals`             | `NumericEquals`             |                                                                   |
-| `NumericNotEquals`          | `NumericNotEquals`          |                                                                   |
-| `NumericLessThan`           | `NumericLessThan`           |                                                                   |
-| `NumericLessThanEquals`     | `NumericLessThanEquals`     |                                                                   |
-| `NumericGreaterThan`        | `NumericGreaterThan`        |                                                                   |
-| `NumericGreaterThanEquals`  | `NumericGreaterThanEquals`  |                                                                   |
-| `DateEquals`                | `StringEquals`              | Date transforms to unix timestamp to be compared as string        |
-| `DateNotEquals`             | `StringNotEquals`           | Date transforms to unix timestamp to be compared as string        |
-| `DateLessThan`              | `StringEqualsIgnoreCase`    | Date transforms to unix timestamp to be compared as string        |
-| `DateLessThanEquals`        | `StringNotEqualsIgnoreCase` | Date transforms to unix timestamp to be compared as string        |
-| `DateGreaterThan`           | `StringLike`                | Date transforms to unix timestamp to be compared as string        |
-| `DateGreaterThanEquals`     | `StringNotLike`             | Date transforms to unix timestamp to be compared as string        |
-| `Bool`                      | `StringEqualsIgnoreCase`    |                                                                   |
-| `IpAddress`                 | `IPAddress`                 |                                                                   |
-| `NotIpAddress`              | `NotIPAddress`              |                                                                   |
-| `ArnEquals`                 | `StringEquals`              |                                                                   |
-| `ArnLike`                   | `StringLike`                |                                                                   |
-| `ArnNotEquals`              | `StringNotEquals`           |                                                                   |
-| `ArnNotLike`                | `StringNotLike`             |                                                                   |
-| `SliceContains`             | `SliceContains`             | AWS spec doesn't contain such operator. This is FrostFS extension |
-
-For example, AWS conditions:
-
-```json
-{
-  "Condition": {
-    "ArnEquals": {"key16": ["val16"]},
-    "ArnNotEquals": {"key18": ["val18"]},
-    "ArnNotLike": {"key19": ["val19"]},
-    "Bool": {"key13": ["True"]},
-    "DateEquals": {"key7": ["2006-01-02T15:04:05+07:00"]},
-    "DateGreaterThan": {"key11": ["2006-01-02T15:04:05-01:00"]},
-    "DateGreaterThanEquals": {"key12": ["2006-01-02T15:04:05-03:00"]},
-    "DateLessThan": {"key9": ["2006-01-02T15:04:05+06:00"]},
-    "DateLessThanEquals": {"key10": ["2006-01-02T15:04:05+03:00"]},
-    "DateNotEquals": {"key8": ["2006-01-02T15:04:05Z"]},
-    "NumericEquals": {"key20": ["-20"]},
-    "NumericGreaterThan": {"key24": ["-24.24"]},
-    "NumericGreaterThanEquals": {"key25": ["+25.25"]},
-    "NumericLessThan": {"key22": ["0"]},
-    "NumericLessThanEquals": {"key23": ["23.23"]},
-    "NumericNotEquals": {"key21": ["+21"]},
-    "StringEquals": {"key1": ["val0"]},
-    "StringEqualsIgnoreCase": {"key3": ["val3"]},
-    "StringLike": {"key5": ["val5"]},
-    "StringNotEquals": {"key2": ["val2"]},
-    "StringNotEqualsIgnoreCase": {"key4": ["val4"]},
-    "StringNotLike": {"key6": ["val6"]}
-  }
-}
-```
-
-transforms to FrostFS conditions:
-
-```json
-{
-  "Condition": [
-    {"Op": "StringLike", "Object": "Request", "Key": "key5", "Value": "val5"},
-    {"Op": "StringNotEquals", "Object": "Request", "Key": "key2", "Value": "val2"},
-    {"Op": "StringGreaterThan", "Object": "Request", "Key": "key11", "Value": "1136217845"},
-    {"Op": "StringGreaterThanEquals", "Object": "Request", "Key": "key12", "Value": "1136225045"},
-    {"Op": "StringLessThan", "Object": "Request", "Key": "key9", "Value": "1136192645"},
-    {"Op": "StringEqualsIgnoreCase", "Object": "Request", "Key": "key3", "Value": "val3"},
-    {"Op": "StringEquals", "Object": "Request", "Key": "key16", "Value": "val16"},
-    {"Op": "NumericLessThanEquals", "Object": "Request", "Key": "key23", "Value": "23.23"},
-    {"Op": "StringNotEqualsIgnoreCase", "Object": "Request", "Key": "key4", "Value": "val4"},
-    {"Op": "StringEquals", "Object": "Request", "Key": "key1", "Value": "val0"},
-    {"Op": "StringLessThanEquals", "Object": "Request", "Key": "key10", "Value": "1136203445"},
-    {"Op": "NumericGreaterThan", "Object": "Request", "Key": "key24", "Value": "-24.24"},
-    {"Op": "NumericGreaterThanEquals", "Object": "Request", "Key": "key25", "Value": "+25.25"},
-    {"Op": "NumericLessThan", "Object": "Request", "Key": "key22", "Value": "0"},
-    {"Op": "StringNotEquals", "Object": "Request", "Key": "key8", "Value": "1136214245"},
-    {"Op": "NumericEquals", "Object": "Request", "Key": "key20", "Value": "-20"},
-    {"Op": "NumericNotEquals", "Object": "Request", "Key": "key21", "Value": "+21"},
-    {"Op": "StringNotLike", "Object": "Request", "Key": "key6", "Value": "val6"},
-    {"Op": "StringNotEquals", "Object": "Request", "Key": "key18", "Value": "val18"},
-    {"Op": "StringNotLike", "Object": "Request", "Key": "key19", "Value": "val19"},
-    {"Op": "StringEqualsIgnoreCase", "Object": "Request", "Key": "key13", "Value": "True"},
-    {"Op": "StringEquals", "Object": "Request", "Key": "key7", "Value": "1136189045"}
-  ]
-}
-```
-
-### S3
-
-#### Actions
-
-Each action allows some s3-gw methods, so we must transform action to specific method names
-(you can see exact mapping in table in [this file](../iam/converter_s3.go)).
-
-For example the following actions:
-
-```json
-{
-  "Action": [
-    "s3:DeleteObject",
-    "iam:CreateUser"
-  ]
-}
-```
-
-transforms to
-
-```json
-{
-  "Actions": {
-    "Inverted": false,
-    "Names": [
-      "s3:DeleteObject",
-      "s3:DeleteMultipleObjects",
-      "iam:CreateUser"
-    ]
-  }
-}
-```
-
-As we can see any `iam:*` action transformed as it is. But `s3:*` actions transforms according to
-[spec rules](https://docs.aws.amazon.com/service-authorization/latest/reference/list_amazons3.html) and s3-gw
-[method names](https://git.frostfs.info/TrueCloudLab/frostfs-s3-gw/src/commit/2ab655b909c40db6f7a4e41e07d8b99167f791bd/api/middleware/constants.go#L3-L76).
-
-#### Resources
-
-Resource is transformed as it is:
-
-```json
-{
-  "Resource": [
-    "arn:aws:s3:::bucket/object"
-  ]
-}
-```
-
-```json
-{
-  "Resources": {
-    "Inverted": false,
-    "Names": [
-      "arn:aws:s3:::bucket/object"
-    ]
-  }
-}
-```
-
-#### Principals
-
-To check user s3-gw uses special condition request property (`Owner`), so when AWS policy contains principal field
-it transforms to rule with appropriate condition. To get correct `Owner` property value special user resolver
-(`S3Resolver` interface in [converter_s3 file](../iam/converter_s3.go)) must be provided into convert function.
-
-For example such AWS json statement:
-
-```json
-{
-  "Effect": "Allow",
-  "Action": "*",
-  "Resource": "*",
-  "Principal": {
-    "AWS": "arn:aws:iam::111122223333:user/JohnDoe"
-  }
-}
-```
-
-transforms to the following FrostFS rule:
-
-```json
-{
-  "Status": "Allow",
-  "Actions": {
-    "Inverted": false,
-    "Names": [
-      "*"
-    ]
-  },
-  "Resources": {
-    "Inverted": false,
-    "Names": [
-      "*"
-    ]
-  },
-  "Any": false,
-  "Condition": [
-    {
-      "Op": "StringEquals",
-      "Object": "Request",
-      "Key": "Owner",
-      "Value": "NbUgTSFvPmsRxmGeWpuuGeJUoRoi6PErcM"
-    }
-  ]
-}
-```
-
-### Native
-
-#### Actions
-
-Each action allows some frostfs methods, so we must transform action to specific method names
-(you can see exact mapping in table in [this file](../iam/converter_native.go)).
-
-For example the following actions:
-
-```json
-{
-  "Action": [
-    "s3:DeleteObject",
-    "iam:CreateUser"
-  ]
-}
-```
-
-transforms to
-
-```json
-{
-  "Actions": {
-    "Inverted": false,
-    "Names": [
-      "PutObject",
-      "HeadObject",
-      "GetObject",
-      "RangeObject",
-      "GetContainer",
-      "DeleteObject"
-    ]
-  }
-}
-```
-
-> **Note:** Only subset of s3:* actions can be transformed (exact value you can see in mapping table mentioned before).
-> If all provided actions is not applicable converter function returns appropriate error.
-
-Native methods (to which original actions are transformed) depend on which methods are invoked by appropriate s3-gw
-[method](https://git.frostfs.info/TrueCloudLab/frostfs-s3-gw/src/commit/2ab655b909c40db6f7a4e41e07d8b99167f791bd/api/middleware/constants.go#L3-L76).
-
-So in example above s3-gw during performing DeleteObject methods invokes the following methods:
-`["PutObject","HeadObject","GetObject","RangeObject","GetContainer","DeleteObject"]`
-
-#### Resources
-
-To transform resources the following is being performed:
-
-* Bucket name is resoled to container id (by providing `NativeResolver` interface implementation to converter)
-* Object name is transformed to condition with special `FilePath` attribute
-  (that present on every object that was uploaded via s3-gw)
-
-For example, the following AWS policy statement:
-
-```json
-{
-  "Principal": "*",
-  "Effect": "Allow",
-  "Action": "*",
-  "Resource": "arn:aws:s3:::bucket/object"
-}
-```
-
-transforms to FrostFS native policy rule:
-
-```json
-{
-  "Status": "Allow",
-  "Actions": {
-    "Inverted": false,
-    "Names": [
-      "*"
-    ]
-  },
-  "Resources": {
-    "Inverted": false,
-    "Names": [
-      "native:object//bucket/HFq67qbfhFEiEL7qDXqayo3F78yAvxXSXzwSa2hKM9bH/*",
-      "native:container//bucket/HFq67qbfhFEiEL7qDXqayo3F78yAvxXSXzwSa2hKM9bH"
-    ]
-  },
-  "Any": false,
-  "Condition": [
-    {
-      "Op": "StringLike",
-      "Object": "Resource",
-      "Key": "FilePath",
-      "Value": "object"
-    }
-  ]
-}
-```
-
-#### Principals
-
-To check user s3-gw uses special condition request property (`$Actor:publicKey`), so when AWS policy contains principal
-field it transforms to rule with appropriate condition. To get correct `$Actor:publicKey` property value
-special user resolver (`NativeResolver` interface in [converter_native file](../iam/converter_native.go)) must be
-provided into convert function.
-
-For example such AWS json statement:
-
-```json
-{
-  "Effect": "Allow",
-  "Action": "*",
-  "Resource": "*",
-  "Principal": {
-    "AWS": "arn:aws:iam::111122223333:user/JohnDoe"
-  }
-}
-```
-
-transforms to the following FrostFS rule:
-
-```json
-{
-  "Status": "Allow",
-  "Actions": {
-    "Inverted": false,
-    "Names": [
-      "*"
-    ]
-  },
-  "Resources": {
-    "Inverted": false,
-    "Names": [
-      "native:object/*",
-      "native:container/*"
-    ]
-  },
-  "Any": false,
-  "Condition": [
-    {
-      "Op": "StringEquals",
-      "Object": "Request",
-      "Key": "$Actor:publicKey",
-      "Value": "031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a"
-    }
-  ]
-}
-```

docs/resource.md

@@ -1,20 +0,0 @@
-# Resource
-
-From the point of the access policy engine, a resource is an object to which a request is being performed.
-This can be an object in a container within a namespace, or all objects in a container,
-or all containers within the root namespace etc.
-
-A resource can be viewed from two sides:
- - As part of a [request](../pkg/resource/resource.go). In this case a resource has a name and properties.
- - As part of rule [chain](../pkg/chain/chain.go): a resource has just a name.
-
-## Resource name
-
-A resource name must have a such format that can be processed by a chain router that matches a request
-either with local overrides or with rules within policy contract to get if this request is allowed to be performed.
-The main idea of this format is for the chain router to match by full name (`native:object//cnrID/objID`) or
-wildcard (`native:object//cnrID/*`).
-
-Check out formats that are defined in the schema: [native formats](../schema/native/consts.go), [s3 formats](../schema/s3/consts.go).
-You should validate a resource name using [util](../schema/native/util/validation.go) before instantiating a request or
-before putting it to either to local override storage or the policy contract storage.

error.go

@@ -1,4 +1,4 @@
-package chain
+package policyengine
 
 import "fmt"
 

glob.go

@@ -1,4 +1,4 @@
-package util
+package policyengine
 
 import (
 	"strings"
@@ -9,7 +9,7 @@ import (
 // ? in pattern correspond to any symbol.
 // * in pattern correspond to any sequence of symbols.
 // Currently only '*' in the suffix is supported.
-func GlobMatch(s, pattern string) bool {
+func globMatch(s, pattern string) bool {
 	index := strings.IndexByte(pattern, '*')
 	switch index {
 	default:

go.mod

@@ -1,35 +1,11 @@
 module git.frostfs.info/TrueCloudLab/policy-engine
 
-go 1.22
+go 1.20
 
-require (
+require github.com/stretchr/testify v1.8.1
-	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409111539-e7a05a49ff45
-	github.com/google/uuid v1.3.1
-	github.com/mailru/easyjson v0.7.7
-	github.com/nspcc-dev/neo-go v0.105.0
-	github.com/stretchr/testify v1.8.4
-	golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63
-)
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/golang/snappy v0.0.1 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
-	github.com/nspcc-dev/go-ordered-json v0.0.0-20231123160306-3374ff1e7a3c // indirect
-	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231127165613-b35f351f0ba0 // indirect
-	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 // indirect
-	github.com/twmb/murmur3 v1.1.5 // indirect
-	go.etcd.io/bbolt v1.3.8 // indirect
-	go.uber.org/multierr v1.10.0 // indirect
-	go.uber.org/zap v1.26.0 // indirect
-	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/sys v0.15.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,166 +1,17 @@
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409111539-e7a05a49ff45 h1:Tp4I+XOLp3VCJORfxSamQtj3RZNISbaLM4WD5iIzXxg=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240409111539-e7a05a49ff45/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
-github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/bits-and-blooms/bitset v1.8.0 h1:FD+XqgOZDUxxZ8hzoBFuV9+cGWY9CslN6d5MS5JVb4c=
-github.com/bits-and-blooms/bitset v1.8.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
-github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/consensys/bavard v0.1.13 h1:oLhMLOFGTLdlda/kma4VOJazblc7IM5y5QPd2A/YjhQ=
-github.com/consensys/bavard v0.1.13/go.mod h1:9ItSMtA/dXMAiL7BG6bqW2m3NdSEObYWoH223nGHukI=
-github.com/consensys/gnark-crypto v0.12.2-0.20231013160410-1f65e75b6dfb h1:f0BMgIjhZy4lSRHCXFbQst85f5agZAjtDMixQqBWNpc=
-github.com/consensys/gnark-crypto v0.12.2-0.20231013160410-1f65e75b6dfb/go.mod h1:v2Gy7L/4ZRosZ7Ivs+9SfUDr0f5UlG+EM5t7MPHiLuY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
-github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
-github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
-github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
-github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=
-rsc.io/tmplfunc v0.0.3/go.mod h1:AG3sTPzElb1Io3Yg4voV9AGZJuleGAwaVRxL9M49PhA=

iam/converter.go

@@ -1,78 +1,16 @@
 package iam
 
 import (
-	"errors"
 	"fmt"
-	"net/netip"
 	"strconv"
 	"strings"
 	"time"
-	"unicode/utf8"
 
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
+	policyengine "git.frostfs.info/TrueCloudLab/policy-engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/common"
-	"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
 )
 
 const (
-	s3ActionAbortMultipartUpload             = "s3:AbortMultipartUpload"
+	RequestOwnerProperty = "Owner"
-	s3ActionCreateBucket                     = "s3:CreateBucket"
-	s3ActionDeleteBucket                     = "s3:DeleteBucket"
-	s3ActionDeleteBucketPolicy               = "s3:DeleteBucketPolicy"
-	s3ActionDeleteObject                     = "s3:DeleteObject"
-	s3ActionDeleteObjectTagging              = "s3:DeleteObjectTagging"
-	s3ActionDeleteObjectVersion              = "s3:DeleteObjectVersion"
-	s3ActionDeleteObjectVersionTagging       = "s3:DeleteObjectVersionTagging"
-	s3ActionGetBucketACL                     = "s3:GetBucketAcl"
-	s3ActionGetBucketCORS                    = "s3:GetBucketCORS"
-	s3ActionGetBucketLocation                = "s3:GetBucketLocation"
-	s3ActionGetBucketNotification            = "s3:GetBucketNotification"
-	s3ActionGetBucketObjectLockConfiguration = "s3:GetBucketObjectLockConfiguration"
-	s3ActionGetBucketPolicy                  = "s3:GetBucketPolicy"
-	s3ActionGetBucketPolicyStatus            = "s3:GetBucketPolicyStatus"
-	s3ActionGetBucketTagging                 = "s3:GetBucketTagging"
-	s3ActionGetBucketVersioning              = "s3:GetBucketVersioning"
-	s3ActionGetLifecycleConfiguration        = "s3:GetLifecycleConfiguration"
-	s3ActionGetObject                        = "s3:GetObject"
-	s3ActionGetObjectACL                     = "s3:GetObjectAcl"
-	s3ActionGetObjectAttributes              = "s3:GetObjectAttributes"
-	s3ActionGetObjectLegalHold               = "s3:GetObjectLegalHold"
-	s3ActionGetObjectRetention               = "s3:GetObjectRetention"
-	s3ActionGetObjectTagging                 = "s3:GetObjectTagging"
-	s3ActionGetObjectVersion                 = "s3:GetObjectVersion"
-	s3ActionGetObjectVersionACL              = "s3:GetObjectVersionAcl"
-	s3ActionGetObjectVersionAttributes       = "s3:GetObjectVersionAttributes"
-	s3ActionGetObjectVersionTagging          = "s3:GetObjectVersionTagging"
-	s3ActionListAllMyBuckets                 = "s3:ListAllMyBuckets"
-	s3ActionListBucket                       = "s3:ListBucket"
-	s3ActionListBucketMultipartUploads       = "s3:ListBucketMultipartUploads"
-	s3ActionListBucketVersions               = "s3:ListBucketVersions"
-	s3ActionListMultipartUploadParts         = "s3:ListMultipartUploadParts"
-	s3ActionPutBucketACL                     = "s3:PutBucketAcl"
-	s3ActionPutBucketCORS                    = "s3:PutBucketCORS"
-	s3ActionPutBucketNotification            = "s3:PutBucketNotification"
-	s3ActionPutBucketObjectLockConfiguration = "s3:PutBucketObjectLockConfiguration"
-	s3ActionPutBucketPolicy                  = "s3:PutBucketPolicy"
-	s3ActionPutBucketTagging                 = "s3:PutBucketTagging"
-	s3ActionPutBucketVersioning              = "s3:PutBucketVersioning"
-	s3ActionPutLifecycleConfiguration        = "s3:PutLifecycleConfiguration"
-	s3ActionPutObject                        = "s3:PutObject"
-	s3ActionPutObjectACL                     = "s3:PutObjectAcl"
-	s3ActionPutObjectLegalHold               = "s3:PutObjectLegalHold"
-	s3ActionPutObjectRetention               = "s3:PutObjectRetention"
-	s3ActionPutObjectTagging                 = "s3:PutObjectTagging"
-	s3ActionPutObjectVersionACL              = "s3:PutObjectVersionAcl"
-	s3ActionPutObjectVersionTagging          = "s3:PutObjectVersionTagging"
-	s3ActionPatchObject                      = "s3:PatchObject"
-)
-
-const (
-	condKeyAWSPrincipalARN       = "aws:PrincipalArn"
-	condKeyAWSSourceIP           = "aws:SourceIp"
-	condKeyAWSPrincipalTagPrefix = "aws:PrincipalTag/"
-	condKeyAWSRequestTagPrefix   = "aws:RequestTag/"
-	condKeyAWSResourceTagPrefix  = "aws:ResourceTag/"
-	userClaimTagPrefix           = "tag-"
 )
 
 const (
@@ -112,213 +50,178 @@ const (
 	CondArnLike      string = "ArnLike"
 	CondArnNotEquals string = "ArnNotEquals"
 	CondArnNotLike   string = "ArnNotLike"
-
-	// Custom condition operators.
-	CondSliceContains string = "SliceContains"
 )
 
-const (
+func (p Policy) ToChain() (*policyengine.Chain, error) {
-	arnIAMPrefix     = "arn:aws:iam::"
+	if err := p.Validate(GeneralPolicyType); err != nil {
-	s3ResourcePrefix = "arn:aws:s3:::"
+		return nil, err
-	s3ActionPrefix   = "s3:"
+	}
-	iamActionPrefix  = "iam:"
-)
 
-var (
+	var chain policyengine.Chain
-	// ErrInvalidPrincipalFormat occurs when principal has unknown/unsupported format.
-	ErrInvalidPrincipalFormat = errors.New("invalid principal format")
 
-	// ErrInvalidResourceFormat occurs when resource has unknown/unsupported format.
+	for _, statement := range p.Statement {
-	ErrInvalidResourceFormat = errors.New("invalid resource format")
+		status := policyengine.AccessDenied
+		if statement.Effect == AllowEffect {
+			status = policyengine.Allow
+		}
 
-	// ErrInvalidActionFormat occurs when action has unknown/unsupported format.
+		var principals []string
-	ErrInvalidActionFormat = errors.New("invalid action format")
+		var op policyengine.ConditionType
+		statementPrincipal, inverted := statement.principal()
+		if _, ok := statementPrincipal[Wildcard]; ok { // this can be true only if 'inverted' false
+			principals = []string{Wildcard}
+			op = policyengine.CondStringLike
+		} else {
+			for _, principal := range statementPrincipal {
+				principals = append(principals, principal...)
+			}
 
-	// ErrActionsNotApplicable occurs when failed to convert any actions.
+			op = policyengine.CondStringEquals
-	ErrActionsNotApplicable = errors.New("actions not applicable")
+			if inverted {
-)
+				op = policyengine.CondStringNotEquals
+			}
+		}
 
-type formPrincipalConditionFunc func(string) chain.Condition
+		var conditions []policyengine.Condition
+		for _, principal := range principals {
+			conditions = append(conditions, policyengine.Condition{
+				Op:     op,
+				Object: policyengine.ObjectRequest,
+				Key:    RequestOwnerProperty,
+				Value:  principal,
+			})
+		}
 
-type transformConditionFunc func(gr GroupedConditions) (GroupedConditions, error)
+		conds, err := statement.Conditions.ToChainCondition()
+		if err != nil {
+			return nil, err
+		}
+		conditions = append(conditions, conds...)
 
-func convertToChainConditions(c Conditions, transformer transformConditionFunc) ([]GroupedConditions, error) {
+		action, actionInverted := statement.action()
-	conditions, err := convertToChainCondition(c)
+		ruleAction := policyengine.Actions{Inverted: actionInverted, Names: action}
+
+		resource, resourceInverted := statement.resource()
+		ruleResource := policyengine.Resources{Inverted: resourceInverted, Names: resource}
+
+		r := policyengine.Rule{
+			Status:    status,
+			Actions:   ruleAction,
+			Resources: ruleResource,
+			Any:       true,
+			Condition: conditions,
+		}
+		chain.Rules = append(chain.Rules, r)
+	}
+
+	return &chain, nil
+}
+
+//nolint:funlen
+func (c Conditions) ToChainCondition() ([]policyengine.Condition, error) {
+	var conditions []policyengine.Condition
+
+	var convertValue convertFunction
+
+	for op, KVs := range c {
+		var condType policyengine.ConditionType
+
+		switch {
+		case strings.HasPrefix(op, "String"):
+			convertValue = noConvertFunction
+			switch op {
+			case CondStringEquals:
+				condType = policyengine.CondStringEquals
+			case CondStringNotEquals:
+				condType = policyengine.CondStringNotEquals
+			case CondStringEqualsIgnoreCase:
+				condType = policyengine.CondStringEqualsIgnoreCase
+			case CondStringNotEqualsIgnoreCase:
+				condType = policyengine.CondStringNotEqualsIgnoreCase
+			case CondStringLike:
+				condType = policyengine.CondStringLike
+			case CondStringNotLike:
+				condType = policyengine.CondStringNotLike
+			default:
+				return nil, fmt.Errorf("unsupported condition operator: '%s'", op)
+			}
+		case strings.HasPrefix(op, "Arn"):
+			convertValue = noConvertFunction
+			switch op {
+			case CondArnEquals:
+				condType = policyengine.CondStringEquals
+			case CondArnNotEquals:
+				condType = policyengine.CondStringNotEquals
+			case CondArnLike:
+				condType = policyengine.CondStringLike
+			case CondArnNotLike:
+				condType = policyengine.CondStringNotLike
+			default:
+				return nil, fmt.Errorf("unsupported condition operator: '%s'", op)
+			}
+		case strings.HasPrefix(op, "Numeric"):
+			// TODO
+		case strings.HasPrefix(op, "Date"):
+			convertValue = dateConvertFunction
+			switch op {
+			case CondDateEquals:
+				condType = policyengine.CondStringEquals
+			case CondDateNotEquals:
+				condType = policyengine.CondStringNotEquals
+			case CondDateLessThan:
+				condType = policyengine.CondStringLessThan
+			case CondDateLessThanEquals:
+				condType = policyengine.CondStringLessThanEquals
+			case CondDateGreaterThan:
+				condType = policyengine.CondStringGreaterThan
+			case CondDateGreaterThanEquals:
+				condType = policyengine.CondStringGreaterThanEquals
+			default:
+				return nil, fmt.Errorf("unsupported condition operator: '%s'", op)
+			}
+		case op == CondBool:
+			convertValue = noConvertFunction
+			condType = policyengine.CondStringEqualsIgnoreCase
+		case op == CondIPAddress:
+			// todo consider using converters
+			//  "203.0.113.0/24" -> "203.0.113.*",
+			//  "2001:DB8:1234:5678::/64" -> "2001:DB8:1234:5678:*"
+			//  or having specific condition type for IP
+			convertValue = noConvertFunction
+			condType = policyengine.CondStringLike
+		case op == CondNotIPAddress:
+			convertValue = noConvertFunction
+			condType = policyengine.CondStringNotLike
+		default:
+			return nil, fmt.Errorf("unsupported condition operator: '%s'", op)
+		}
+
+		for key, values := range KVs {
+			for _, val := range values {
+				converted, err := convertValue(val)
 				if err != nil {
 					return nil, err
 				}
 
-	for i := range conditions {
+				conditions = append(conditions, policyengine.Condition{
-		if conditions[i], err = transformer(conditions[i]); err != nil {
+					Op:     condType,
-			return nil, fmt.Errorf("transform condition: %w", err)
+					Object: policyengine.ObjectRequest,
+					Key:    key,
+					Value:  converted,
+				})
+			}
 		}
 	}
 
 	return conditions, nil
 }
 
-type GroupedConditions struct {
-	Conditions []chain.Condition
-	Any        bool
-}
-
-func convertToChainCondition(c Conditions) ([]GroupedConditions, error) {
-	var grouped []GroupedConditions
-
-	for op, KVs := range c {
-		condType, convertValue, err := getConditionTypeAndConverter(op)
-		if err != nil {
-			return nil, err
-		}
-
-		for key, values := range KVs {
-			group := GroupedConditions{
-				Conditions: make([]chain.Condition, len(values)),
-				Any:        len(values) > 1,
-			}
-
-			for i, val := range values {
-				converted, err := convertValue(val)
-				if err != nil {
-					return nil, err
-				}
-
-				group.Conditions[i] = chain.Condition{
-					Op:    condType,
-					Kind:  chain.KindRequest,
-					Key:   transformKey(key),
-					Value: converted,
-				}
-			}
-			grouped = append(grouped, group)
-		}
-	}
-
-	return grouped, nil
-}
-
-func transformKey(key string) string {
-	tagName, isTag := strings.CutPrefix(key, condKeyAWSPrincipalTagPrefix)
-	if isTag {
-		return fmt.Sprintf(common.PropertyKeyFormatFrostFSIDUserClaim, userClaimTagPrefix+tagName)
-	}
-
-	switch key {
-	case condKeyAWSSourceIP:
-		return common.PropertyKeyFrostFSSourceIP
-	}
-
-	return key
-}
-
-func getConditionTypeAndConverter(op string) (chain.ConditionType, convertFunction, error) {
-	switch {
-	case strings.HasPrefix(op, "String"):
-		switch op {
-		case CondStringEquals:
-			return chain.CondStringEquals, noConvertFunction, nil
-		case CondStringNotEquals:
-			return chain.CondStringNotEquals, noConvertFunction, nil
-		case CondStringEqualsIgnoreCase:
-			return chain.CondStringEqualsIgnoreCase, noConvertFunction, nil
-		case CondStringNotEqualsIgnoreCase:
-			return chain.CondStringNotEqualsIgnoreCase, noConvertFunction, nil
-		case CondStringLike:
-			return chain.CondStringLike, noConvertFunction, nil
-		case CondStringNotLike:
-			return chain.CondStringNotLike, noConvertFunction, nil
-		default:
-			return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
-		}
-	case strings.HasPrefix(op, "Arn"):
-		switch op {
-		case CondArnEquals:
-			return chain.CondStringEquals, noConvertFunction, nil
-		case CondArnNotEquals:
-			return chain.CondStringNotEquals, noConvertFunction, nil
-		case CondArnLike:
-			return chain.CondStringLike, noConvertFunction, nil
-		case CondArnNotLike:
-			return chain.CondStringNotLike, noConvertFunction, nil
-		default:
-			return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
-		}
-	case strings.HasPrefix(op, "Numeric"):
-		return numericConditionTypeAndConverter(op)
-	case strings.HasPrefix(op, "Date"):
-		switch op {
-		case CondDateEquals:
-			return chain.CondStringEquals, dateConvertFunction, nil
-		case CondDateNotEquals:
-			return chain.CondStringNotEquals, dateConvertFunction, nil
-		case CondDateLessThan:
-			return chain.CondStringLessThan, dateConvertFunction, nil
-		case CondDateLessThanEquals:
-			return chain.CondStringLessThanEquals, dateConvertFunction, nil
-		case CondDateGreaterThan:
-			return chain.CondStringGreaterThan, dateConvertFunction, nil
-		case CondDateGreaterThanEquals:
-			return chain.CondStringGreaterThanEquals, dateConvertFunction, nil
-		default:
-			return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
-		}
-	case op == CondBool:
-		return chain.CondStringEqualsIgnoreCase, noConvertFunction, nil
-	case op == CondIPAddress:
-		return chain.CondIPAddress, ipConvertFunction, nil
-	case op == CondNotIPAddress:
-		return chain.CondNotIPAddress, ipConvertFunction, nil
-	case op == CondSliceContains:
-		return chain.CondSliceContains, noConvertFunction, nil
-	default:
-		return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
-	}
-}
-
-func numericConditionTypeAndConverter(op string) (chain.ConditionType, convertFunction, error) {
-	switch op {
-	case CondNumericEquals:
-		return chain.CondNumericEquals, numericConvertFunction, nil
-	case CondNumericNotEquals:
-		return chain.CondNumericNotEquals, numericConvertFunction, nil
-	case CondNumericLessThan:
-		return chain.CondNumericLessThan, numericConvertFunction, nil
-	case CondNumericLessThanEquals:
-		return chain.CondNumericLessThanEquals, numericConvertFunction, nil
-	case CondNumericGreaterThan:
-		return chain.CondNumericGreaterThan, numericConvertFunction, nil
-	case CondNumericGreaterThanEquals:
-		return chain.CondNumericGreaterThanEquals, numericConvertFunction, nil
-	default:
-		return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
-	}
-}
-
 type convertFunction func(string) (string, error)
 
 func noConvertFunction(val string) (string, error) {
 	return val, nil
 }
 
-func numericConvertFunction(val string) (string, error) {
-	if _, err := fixedn.Fixed8FromString(val); err == nil {
-		return val, nil
-	}
-
-	return "", fmt.Errorf("invalid numeric value: '%s'", val)
-}
-
-func ipConvertFunction(val string) (string, error) {
-	if _, err := netip.ParsePrefix(val); err != nil {
-		if _, err = netip.ParseAddr(val); err != nil {
-			return "", err
-		}
-		val += "/32"
-	}
-
-	return val, nil
-}
-
 func dateConvertFunction(val string) (string, error) {
 	if _, err := strconv.ParseInt(val, 10, 64); err == nil {
 		return val, nil
@@ -331,95 +234,3 @@ func dateConvertFunction(val string) (string, error) {
 
 	return strconv.FormatInt(parsed.UTC().Unix(), 10), nil
 }
-
-func parsePrincipalAsIAMUser(principal string) (account string, user string, err error) {
-	if !strings.HasPrefix(principal, arnIAMPrefix) {
-		return "", "", ErrInvalidPrincipalFormat
-	}
-
-	// iam arn format arn:aws:iam::<account>:user/<user-name-with-path>
-	iamResource := strings.TrimPrefix(principal, arnIAMPrefix)
-	sepIndex := strings.Index(iamResource, ":user/")
-	if sepIndex < 0 {
-		return "", "", ErrInvalidPrincipalFormat
-	}
-
-	account = iamResource[:sepIndex]
-	user = iamResource[sepIndex+6:]
-	if len(user) == 0 {
-		return "", "", ErrInvalidPrincipalFormat
-	}
-
-	userNameIndex := strings.LastIndexByte(user, '/')
-	if userNameIndex > -1 {
-		user = user[userNameIndex+1:]
-		if len(user) == 0 {
-			return "", "", ErrInvalidPrincipalFormat
-		}
-	}
-
-	return account, user, nil
-}
-
-func validateResource(resource string) error {
-	if resource == Wildcard {
-		return nil
-	}
-
-	if !strings.HasPrefix(resource, s3ResourcePrefix) && !strings.HasPrefix(resource, arnIAMPrefix) {
-		return ErrInvalidResourceFormat
-	}
-
-	index := strings.IndexByte(resource, Wildcard[0])
-	if index != -1 && index != utf8.RuneCountInString(resource)-1 {
-		return ErrInvalidResourceFormat
-	}
-
-	return nil
-}
-
-func validateAction(action string) (bool, error) {
-	isIAM := strings.HasPrefix(action, iamActionPrefix)
-	if !strings.HasPrefix(action, s3ActionPrefix) && !isIAM {
-		return false, ErrInvalidActionFormat
-	}
-
-	index := strings.IndexByte(action, Wildcard[0])
-	if index != -1 && index != utf8.RuneCountInString(action)-1 {
-		return false, ErrInvalidActionFormat
-	}
-
-	return isIAM, nil
-}
-
-func splitGroupedConditions(groupedConditions []GroupedConditions) [][]chain.Condition {
-	var orConditions []chain.Condition
-	commonConditions := make([]chain.Condition, 0, len(groupedConditions))
-	for _, grouped := range groupedConditions {
-		if grouped.Any {
-			orConditions = append(orConditions, grouped.Conditions...)
-		} else {
-			commonConditions = append(commonConditions, grouped.Conditions...)
-		}
-	}
-
-	if len(orConditions) == 0 {
-		return [][]chain.Condition{commonConditions}
-	}
-
-	res := make([][]chain.Condition, len(orConditions))
-	for i, condition := range orConditions {
-		res[i] = append([]chain.Condition{condition}, commonConditions...)
-	}
-
-	return res
-}
-
-func formStatus(statement Statement) chain.Status {
-	status := chain.AccessDenied
-	if statement.Effect == AllowEffect {
-		status = chain.Allow
-	}
-
-	return status
-}

iam/converter_native.go

@@ -1,427 +0,0 @@
-package iam
-
-import (
-	"errors"
-	"fmt"
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-)
-
-const PropertyKeyFilePath = "FilePath"
-
-var actionToNativeOpMap = map[string][]string{
-	s3ActionAbortMultipartUpload:             {native.MethodGetContainer, native.MethodDeleteObject, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionCreateBucket:                     {native.MethodGetContainer, native.MethodPutContainer, native.MethodSetContainerEACL, native.MethodGetObject, native.MethodPutObject},
-	s3ActionDeleteBucket:                     {native.MethodGetContainer, native.MethodDeleteContainer, native.MethodSearchObject, native.MethodHeadObject, native.MethodGetObject},
-	s3ActionDeleteBucketPolicy:               {native.MethodGetContainer},
-	s3ActionDeleteObject:                     {native.MethodGetContainer, native.MethodDeleteObject, native.MethodPutObject, native.MethodHeadObject, native.MethodGetObject, native.MethodRangeObject},
-	s3ActionDeleteObjectTagging:              {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionDeleteObjectVersion:              {native.MethodGetContainer, native.MethodDeleteObject, native.MethodPutObject, native.MethodHeadObject, native.MethodGetObject, native.MethodRangeObject},
-	s3ActionDeleteObjectVersionTagging:       {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionGetBucketACL:                     {native.MethodGetContainer, native.MethodGetContainerEACL, native.MethodGetObject},
-	s3ActionGetBucketCORS:                    {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetBucketLocation:                {native.MethodGetContainer},
-	s3ActionGetBucketNotification:            {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetBucketObjectLockConfiguration: {native.MethodGetContainer, native.MethodGetObject},
-	s3ActionGetBucketPolicy:                  {native.MethodGetContainer},
-	s3ActionGetBucketPolicyStatus:            {native.MethodGetContainer},
-	s3ActionGetBucketTagging:                 {native.MethodGetContainer, native.MethodGetObject},
-	s3ActionGetBucketVersioning:              {native.MethodGetContainer, native.MethodGetObject},
-	s3ActionGetLifecycleConfiguration:        {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetObject:                        {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
-	s3ActionGetObjectACL:                     {native.MethodGetContainer, native.MethodGetContainerEACL, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetObjectAttributes:              {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetObjectLegalHold:               {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject},
-	s3ActionGetObjectRetention:               {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject},
-	s3ActionGetObjectTagging:                 {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject},
-	s3ActionGetObjectVersion:                 {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
-	s3ActionGetObjectVersionACL:              {native.MethodGetContainer, native.MethodGetContainerEACL, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetObjectVersionAttributes:       {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionGetObjectVersionTagging:          {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject},
-	s3ActionListAllMyBuckets:                 {native.MethodListContainers, native.MethodGetContainer},
-	s3ActionListBucket:                       {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
-	s3ActionListBucketMultipartUploads:       {native.MethodGetContainer, native.MethodGetObject},
-	s3ActionListBucketVersions:               {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
-	s3ActionListMultipartUploadParts:         {native.MethodGetContainer, native.MethodGetObject},
-	s3ActionPutBucketACL:                     {native.MethodGetContainer, native.MethodSetContainerEACL, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutBucketCORS:                    {native.MethodGetContainer, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutBucketNotification:            {native.MethodGetContainer, native.MethodHeadObject, native.MethodDeleteObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutBucketObjectLockConfiguration: {native.MethodGetContainer, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutBucketPolicy:                  {native.MethodGetContainer},
-	s3ActionPutBucketTagging:                 {native.MethodGetContainer, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutBucketVersioning:              {native.MethodGetContainer, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutLifecycleConfiguration:        {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodPutObject, native.MethodDeleteObject},
-	s3ActionPutObject:                        {native.MethodGetContainer, native.MethodPutObject, native.MethodGetObject, native.MethodHeadObject, native.MethodRangeObject},
-	s3ActionPutObjectACL:                     {native.MethodGetContainer, native.MethodGetContainerEACL, native.MethodSetContainerEACL, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionPutObjectLegalHold:               {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutObjectRetention:               {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutObjectTagging:                 {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPutObjectVersionACL:              {native.MethodGetContainer, native.MethodGetContainerEACL, native.MethodSetContainerEACL, native.MethodGetObject, native.MethodHeadObject},
-	s3ActionPutObjectVersionTagging:          {native.MethodGetContainer, native.MethodHeadObject, native.MethodGetObject, native.MethodPutObject},
-	s3ActionPatchObject:                      {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodPatchObject, native.MethodPutObject, native.MethodRangeObject},
-}
-
-var containerNativeOperations = map[string]struct{}{
-	native.MethodPutContainer:     {},
-	native.MethodDeleteContainer:  {},
-	native.MethodGetContainer:     {},
-	native.MethodListContainers:   {},
-	native.MethodSetContainerEACL: {},
-	native.MethodGetContainerEACL: {},
-}
-
-var objectNativeOperations = map[string]struct{}{
-	native.MethodGetObject:    {},
-	native.MethodPutObject:    {},
-	native.MethodHeadObject:   {},
-	native.MethodDeleteObject: {},
-	native.MethodSearchObject: {},
-	native.MethodRangeObject:  {},
-	native.MethodHashObject:   {},
-}
-
-var errConditionKeyNotApplicable = errors.New("condition key is not applicable")
-
-type NativeResolver interface {
-	GetUserKey(account, name string) (string, error)
-	GetBucketInfo(bucket string) (*BucketInfo, error)
-}
-
-type BucketInfo struct {
-	Namespace string
-	Container string
-}
-
-func ConvertToNativeChain(p Policy, resolver NativeResolver) (*chain.Chain, error) {
-	if err := p.Validate(ResourceBasedPolicyType); err != nil {
-		return nil, err
-	}
-
-	var engineChain chain.Chain
-
-	for _, statement := range p.Statement {
-		status := formStatus(statement)
-		if status != chain.Allow {
-			// Most s3 methods share the same native operations. Deny rules must not affect shared native operations,
-			// therefore this code skips all deny rules for native protocol. Deny is applied for s3 protocol only, in this case.
-			continue
-		}
-
-		action, actionInverted := statement.action()
-		nativeActions, err := formNativeActionNames(action)
-		if err != nil {
-			return nil, err
-		}
-		ruleAction := chain.Actions{Inverted: actionInverted, Names: nativeActions}
-		if len(ruleAction.Names) == 0 {
-			continue
-		}
-
-		resource, resourceInverted := statement.resource()
-		groupedResources, err := formNativeResourceNamesAndConditions(resource, resolver, getActionTypes(nativeActions))
-		if err != nil {
-			return nil, err
-		}
-
-		groupedConditions, err := convertToNativeChainCondition(statement.Conditions, resolver)
-		if err != nil {
-			if errors.Is(err, errConditionKeyNotApplicable) {
-				continue
-			}
-			return nil, err
-		}
-		splitConditions := splitGroupedConditions(groupedConditions)
-
-		principals, principalCondFn, err := getNativePrincipalsAndConditionFunc(statement, resolver)
-		if err != nil {
-			return nil, err
-		}
-
-		for _, groupedResource := range groupedResources {
-			for _, principal := range principals {
-				for _, conditions := range splitConditions {
-					var principalCondition []chain.Condition
-					if principal != Wildcard {
-						principalCondition = []chain.Condition{principalCondFn(principal)}
-					}
-
-					ruleConditions := append(principalCondition, groupedResource.Conditions...)
-
-					r := chain.Rule{
-						Status:  status,
-						Actions: ruleAction,
-						Resources: chain.Resources{
-							Inverted: resourceInverted,
-							Names:    groupedResource.Names,
-						},
-						Condition: append(ruleConditions, conditions...),
-					}
-					engineChain.Rules = append(engineChain.Rules, r)
-				}
-			}
-		}
-	}
-
-	if len(engineChain.Rules) == 0 {
-		return nil, ErrActionsNotApplicable
-	}
-
-	return &engineChain, nil
-}
-
-func getActionTypes(nativeActions []string) ActionTypes {
-	var res ActionTypes
-	for _, action := range nativeActions {
-		if res.Object && res.Container {
-			break
-		}
-
-		_, isObj := objectNativeOperations[action]
-		_, isCnr := containerNativeOperations[action]
-
-		res.Object = res.Object || isObj || action == Wildcard
-		res.Container = res.Container || isCnr || action == Wildcard
-	}
-
-	return res
-}
-
-func getNativePrincipalsAndConditionFunc(statement Statement, resolver NativeResolver) ([]string, formPrincipalConditionFunc, error) {
-	var principals []string
-	var op chain.ConditionType
-	statementPrincipal, inverted := statement.principal()
-	if _, ok := statementPrincipal[Wildcard]; ok { // this can be true only if 'inverted' false
-		principals = []string{Wildcard}
-		op = chain.CondStringLike
-	} else {
-		for principalType, principal := range statementPrincipal {
-			if principalType != AWSPrincipalType {
-				return nil, nil, fmt.Errorf("unsupported principal type '%s'", principalType)
-			}
-			parsedPrincipal, err := formNativePrincipal(principal, resolver)
-			if err != nil {
-				return nil, nil, fmt.Errorf("parse principal: %w", err)
-			}
-			principals = append(principals, parsedPrincipal...)
-		}
-
-		op = chain.CondStringEquals
-		if inverted {
-			op = chain.CondStringNotEquals
-		}
-	}
-
-	return principals, func(principal string) chain.Condition {
-		return chain.Condition{
-			Op:    op,
-			Kind:  chain.KindRequest,
-			Key:   native.PropertyKeyActorPublicKey,
-			Value: principal,
-		}
-	}, nil
-}
-
-func convertToNativeChainCondition(c Conditions, resolver NativeResolver) ([]GroupedConditions, error) {
-	return convertToChainConditions(c, func(gr GroupedConditions) (GroupedConditions, error) {
-		res := GroupedConditions{
-			Conditions: make([]chain.Condition, 0, len(gr.Conditions)),
-			Any:        gr.Any,
-		}
-
-		for i := range gr.Conditions {
-			switch {
-			case gr.Conditions[i].Key == condKeyAWSMFAPresent:
-				return GroupedConditions{}, errConditionKeyNotApplicable
-			case gr.Conditions[i].Key == condKeyAWSPrincipalARN:
-				gr.Conditions[i].Key = native.PropertyKeyActorPublicKey
-				val, err := formPrincipalKey(gr.Conditions[i].Value, resolver)
-				if err != nil {
-					return GroupedConditions{}, err
-				}
-				gr.Conditions[i].Value = val
-				res.Conditions = append(res.Conditions, gr.Conditions[i])
-			case strings.HasPrefix(gr.Conditions[i].Key, condKeyAWSRequestTagPrefix) ||
-				strings.HasPrefix(gr.Conditions[i].Key, condKeyAWSResourceTagPrefix):
-				// Tags exist only in S3 requests, so native protocol should not process such conditions.
-				continue
-			default:
-				res.Conditions = append(res.Conditions, gr.Conditions[i])
-			}
-		}
-
-		return res, nil
-	})
-}
-
-type GroupedResources struct {
-	Names      []string
-	Conditions []chain.Condition
-}
-
-type ActionTypes struct {
-	Object    bool
-	Container bool
-}
-
-func formNativeResourceNamesAndConditions(names []string, resolver NativeResolver, actionTypes ActionTypes) ([]GroupedResources, error) {
-	if !actionTypes.Object && !actionTypes.Container {
-		return nil, ErrActionsNotApplicable
-	}
-
-	res := make([]GroupedResources, 0, len(names))
-
-	combined := make(map[string]struct{})
-
-	for _, resource := range names {
-		if err := validateResource(resource); err != nil {
-			return nil, err
-		}
-
-		if resource == Wildcard {
-			res = res[:0]
-			return append(res, formWildcardNativeResource(actionTypes)), nil
-		}
-
-		if !strings.HasPrefix(resource, s3ResourcePrefix) {
-			continue
-		}
-
-		var bkt, obj string
-		s3Resource := strings.TrimPrefix(resource, s3ResourcePrefix)
-		if s3Resource == Wildcard {
-			res = res[:0]
-			return append(res, formWildcardNativeResource(actionTypes)), nil
-		}
-
-		if sepIndex := strings.Index(s3Resource, "/"); sepIndex < 0 {
-			bkt = s3Resource
-		} else {
-			bkt = s3Resource[:sepIndex]
-			obj = s3Resource[sepIndex+1:]
-			if len(obj) == 0 {
-				obj = Wildcard
-			}
-		}
-
-		bktInfo, err := resolver.GetBucketInfo(bkt)
-		if err != nil {
-			return nil, err
-		}
-
-		if obj == Wildcard && actionTypes.Object { // this corresponds to arn:aws:s3:::BUCKET/ or arn:aws:s3:::BUCKET/*
-			combined[fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, bktInfo.Namespace, bktInfo.Container)] = struct{}{}
-			combined[fmt.Sprintf(native.ResourceFormatNamespaceContainer, bktInfo.Namespace, bktInfo.Container)] = struct{}{}
-			continue
-		}
-		if obj == "" && actionTypes.Container { // this corresponds to arn:aws:s3:::BUCKET
-			combined[fmt.Sprintf(native.ResourceFormatNamespaceContainer, bktInfo.Namespace, bktInfo.Container)] = struct{}{}
-			continue
-		}
-
-		res = append(res, GroupedResources{
-			Names: []string{
-				fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, bktInfo.Namespace, bktInfo.Container),
-				fmt.Sprintf(native.ResourceFormatNamespaceContainer, bktInfo.Namespace, bktInfo.Container),
-			},
-			Conditions: []chain.Condition{
-				{
-					Op:    chain.CondStringLike,
-					Kind:  chain.KindResource,
-					Key:   PropertyKeyFilePath,
-					Value: obj,
-				},
-			},
-		})
-	}
-
-	if len(combined) != 0 {
-		gr := GroupedResources{Names: make([]string, 0, len(combined))}
-		for key := range combined {
-			gr.Names = append(gr.Names, key)
-		}
-
-		res = append(res, gr)
-	}
-
-	return res, nil
-}
-
-func formWildcardNativeResource(actionTypes ActionTypes) GroupedResources {
-	groupedNames := make([]string, 0, 2)
-	if actionTypes.Object {
-		groupedNames = append(groupedNames, native.ResourceFormatAllObjects)
-	}
-	if actionTypes.Container {
-		groupedNames = append(groupedNames, native.ResourceFormatAllContainers)
-	}
-
-	return GroupedResources{Names: groupedNames}
-}
-
-func formNativePrincipal(principal []string, resolver NativeResolver) ([]string, error) {
-	res := make([]string, len(principal))
-
-	var err error
-	for i := range principal {
-		if res[i], err = formPrincipalKey(principal[i], resolver); err != nil {
-			return nil, err
-		}
-	}
-
-	return res, nil
-}
-
-func formPrincipalKey(principal string, resolver NativeResolver) (string, error) {
-	account, user, err := parsePrincipalAsIAMUser(principal)
-	if err != nil {
-		return "", err
-	}
-
-	key, err := resolver.GetUserKey(account, user)
-	if err != nil {
-		return "", fmt.Errorf("get user key: %w", err)
-	}
-
-	return key, nil
-}
-
-func formNativeActionNames(names []string) ([]string, error) {
-	uniqueActions := make(map[string]struct{}, len(names))
-
-	for _, action := range names {
-		if action == Wildcard {
-			return []string{Wildcard}, nil
-		}
-
-		isIAM, err := validateAction(action)
-		if err != nil {
-			return nil, err
-		}
-
-		if isIAM {
-			continue
-		}
-
-		if action[len(s3ActionPrefix):] == Wildcard {
-			return []string{Wildcard}, nil
-		}
-
-		nativeActions := actionToNativeOpMap[action]
-		if len(nativeActions) == 0 {
-			return nil, ErrActionsNotApplicable
-		}
-
-		for _, nativeAction := range nativeActions {
-			uniqueActions[nativeAction] = struct{}{}
-		}
-	}
-
-	res := make([]string, 0, len(uniqueActions))
-	for key := range uniqueActions {
-		res = append(res, key)
-	}
-
-	return res, nil
-}

iam/converter_s3.go

@@ -1,270 +0,0 @@
-package iam
-
-import (
-	"fmt"
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/s3"
-)
-
-const condKeyAWSMFAPresent = "aws:MultiFactorAuthPresent"
-
-var actionToS3OpMap = map[string][]string{
-	s3ActionAbortMultipartUpload:  {s3ActionAbortMultipartUpload},
-	s3ActionCreateBucket:          {s3ActionCreateBucket},
-	s3ActionDeleteBucket:          {s3ActionDeleteBucket},
-	s3ActionDeleteBucketPolicy:    {s3ActionDeleteBucketPolicy},
-	s3ActionDeleteObjectTagging:   {s3ActionDeleteObjectTagging},
-	s3ActionGetBucketLocation:     {s3ActionGetBucketLocation},
-	s3ActionGetBucketNotification: {s3ActionGetBucketNotification},
-	s3ActionGetBucketPolicy:       {s3ActionGetBucketPolicy},
-	s3ActionGetBucketPolicyStatus: {s3ActionGetBucketPolicyStatus},
-	s3ActionGetBucketTagging:      {s3ActionGetBucketTagging},
-	s3ActionGetBucketVersioning:   {s3ActionGetBucketVersioning},
-	s3ActionGetObjectAttributes:   {s3ActionGetObjectAttributes},
-	s3ActionGetObjectLegalHold:    {s3ActionGetObjectLegalHold},
-	s3ActionGetObjectRetention:    {s3ActionGetObjectRetention},
-	s3ActionGetObjectTagging:      {s3ActionGetObjectTagging},
-	s3ActionPutBucketNotification: {s3ActionPutBucketNotification},
-	s3ActionPutBucketPolicy:       {s3ActionPutBucketPolicy},
-	s3ActionPutBucketVersioning:   {s3ActionPutBucketVersioning},
-	s3ActionPutObjectLegalHold:    {s3ActionPutObjectLegalHold},
-	s3ActionPutObjectRetention:    {s3ActionPutObjectRetention},
-	s3ActionPutObjectTagging:      {s3ActionPutObjectTagging},
-	s3ActionPatchObject:           {s3ActionPatchObject},
-
-	s3ActionListAllMyBuckets:                 {"s3:ListBuckets"},
-	s3ActionListBucket:                       {"s3:HeadBucket", "s3:GetBucketLocation", "s3:ListObjectsV1", "s3:ListObjectsV2"},
-	s3ActionListBucketVersions:               {"s3:ListBucketObjectVersions"},
-	s3ActionListBucketMultipartUploads:       {"s3:ListMultipartUploads"},
-	s3ActionGetBucketObjectLockConfiguration: {"s3:GetBucketObjectLockConfig"},
-	s3ActionGetLifecycleConfiguration:        {"s3:GetBucketLifecycle"},
-	s3ActionGetBucketACL:                     {"s3:GetBucketACL"},
-	s3ActionGetBucketCORS:                    {"s3:GetBucketCors"},
-	s3ActionPutBucketTagging:                 {"s3:PutBucketTagging", "s3:DeleteBucketTagging"},
-	s3ActionPutBucketObjectLockConfiguration: {"s3:PutBucketObjectLockConfig"},
-	s3ActionPutLifecycleConfiguration:        {"s3:PutBucketLifecycle", "s3:DeleteBucketLifecycle"},
-	s3ActionPutBucketACL:                     {"s3:PutBucketACL"},
-	s3ActionPutBucketCORS:                    {"s3:PutBucketCors", "s3:DeleteBucketCors"},
-
-	s3ActionListMultipartUploadParts:   {"s3:ListParts"},
-	s3ActionGetObjectACL:               {"s3:GetObjectACL"},
-	s3ActionGetObject:                  {"s3:GetObject", "s3:HeadObject"},
-	s3ActionGetObjectVersion:           {"s3:GetObject", "s3:HeadObject"},
-	s3ActionGetObjectVersionACL:        {"s3:GetObjectACL"},
-	s3ActionGetObjectVersionAttributes: {"s3:GetObjectAttributes"},
-	s3ActionGetObjectVersionTagging:    {"s3:GetObjectTagging"},
-	s3ActionPutObjectACL:               {"s3:PutObjectACL"},
-	s3ActionPutObjectVersionACL:        {"s3:PutObjectACL"},
-	s3ActionPutObjectVersionTagging:    {"s3:PutObjectTagging"},
-	s3ActionPutObject: {
-		"s3:PutObject", "s3:PostObject", "s3:CopyObject",
-		"s3:UploadPart", "s3:UploadPartCopy", "s3:CreateMultipartUpload", "s3:CompleteMultipartUpload",
-	},
-	s3ActionDeleteObjectVersionTagging: {"s3:DeleteObjectTagging"},
-	s3ActionDeleteObject:               {"s3:DeleteObject", "s3:DeleteMultipleObjects"},
-	s3ActionDeleteObjectVersion:        {"s3:DeleteObject", "s3:DeleteMultipleObjects"},
-}
-
-type S3Resolver interface {
-	GetUserAddress(account, user string) (string, error)
-}
-
-func ConvertToS3Chain(p Policy, resolver S3Resolver) (*chain.Chain, error) {
-	if err := p.Validate(ResourceBasedPolicyType); err != nil {
-		return nil, err
-	}
-
-	var engineChain chain.Chain
-
-	for _, statement := range p.Statement {
-		status := formStatus(statement)
-
-		actions, actionInverted := statement.action()
-		s3Actions, err := formS3ActionNames(actions)
-		if err != nil {
-			return nil, err
-		}
-		ruleAction := chain.Actions{Inverted: actionInverted, Names: s3Actions}
-		if len(ruleAction.Names) == 0 {
-			continue
-		}
-
-		resources, resourceInverted := statement.resource()
-		if err := validateS3ResourceNames(resources); err != nil {
-			return nil, err
-		}
-		ruleResource := chain.Resources{Inverted: resourceInverted, Names: resources}
-
-		groupedConditions, err := convertToS3ChainCondition(statement.Conditions, resolver)
-		if err != nil {
-			return nil, err
-		}
-		splitConditions := splitGroupedConditions(groupedConditions)
-
-		principals, principalCondFn, err := getS3PrincipalsAndConditionFunc(statement, resolver)
-		if err != nil {
-			return nil, err
-		}
-
-		for _, principal := range principals {
-			for _, conditions := range splitConditions {
-				var principalCondition []chain.Condition
-				if principal != Wildcard {
-					principalCondition = []chain.Condition{principalCondFn(principal)}
-				}
-
-				r := chain.Rule{
-					Status:    status,
-					Actions:   ruleAction,
-					Resources: ruleResource,
-					Condition: append(principalCondition, conditions...),
-				}
-				engineChain.Rules = append(engineChain.Rules, r)
-			}
-		}
-	}
-
-	if len(engineChain.Rules) == 0 {
-		return nil, ErrActionsNotApplicable
-	}
-
-	return &engineChain, nil
-}
-
-func getS3PrincipalsAndConditionFunc(statement Statement, resolver S3Resolver) ([]string, formPrincipalConditionFunc, error) {
-	var principals []string
-	var op chain.ConditionType
-	statementPrincipal, inverted := statement.principal()
-	if _, ok := statementPrincipal[Wildcard]; ok { // this can be true only if 'inverted' false
-		principals = []string{Wildcard}
-		op = chain.CondStringLike
-	} else {
-		for principalType, principal := range statementPrincipal {
-			if principalType != AWSPrincipalType {
-				return nil, nil, fmt.Errorf("unsupported principal type '%s'", principalType)
-			}
-			parsedPrincipal, err := formS3Principal(principal, resolver)
-			if err != nil {
-				return nil, nil, fmt.Errorf("parse principal: %w", err)
-			}
-			principals = append(principals, parsedPrincipal...)
-		}
-
-		op = chain.CondStringEquals
-		if inverted {
-			op = chain.CondStringNotEquals
-		}
-	}
-
-	return principals, func(principal string) chain.Condition {
-		return chain.Condition{
-			Op:    op,
-			Kind:  chain.KindRequest,
-			Key:   s3.PropertyKeyOwner,
-			Value: principal,
-		}
-	}, nil
-}
-
-func convertToS3ChainCondition(c Conditions, resolver S3Resolver) ([]GroupedConditions, error) {
-	return convertToChainConditions(c, func(gr GroupedConditions) (GroupedConditions, error) {
-		for i := range gr.Conditions {
-			switch {
-			case gr.Conditions[i].Key == condKeyAWSPrincipalARN:
-				gr.Conditions[i].Key = s3.PropertyKeyOwner
-				val, err := formPrincipalOwner(gr.Conditions[i].Value, resolver)
-				if err != nil {
-					return GroupedConditions{}, err
-				}
-				gr.Conditions[i].Value = val
-
-			case gr.Conditions[i].Key == condKeyAWSMFAPresent:
-				gr.Conditions[i].Key = s3.PropertyKeyAccessBoxAttrMFA
-			case strings.HasPrefix(gr.Conditions[i].Key, condKeyAWSResourceTagPrefix):
-				gr.Conditions[i].Kind = chain.KindResource
-			}
-		}
-
-		return gr, nil
-	})
-}
-
-func formS3Principal(principal []string, resolver S3Resolver) ([]string, error) {
-	res := make([]string, len(principal))
-
-	var err error
-	for i := range principal {
-		if res[i], err = formPrincipalOwner(principal[i], resolver); err != nil {
-			return nil, err
-		}
-	}
-
-	return res, nil
-}
-
-func formPrincipalOwner(principal string, resolver S3Resolver) (string, error) {
-	account, user, err := parsePrincipalAsIAMUser(principal)
-	if err != nil {
-		return "", err
-	}
-
-	address, err := resolver.GetUserAddress(account, user)
-	if err != nil {
-		return "", fmt.Errorf("get user address: %w", err)
-	}
-
-	return address, nil
-}
-
-func validateS3ResourceNames(names []string) error {
-	for i := range names {
-		if err := validateResource(names[i]); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func formS3ActionNames(names []string) ([]string, error) {
-	uniqueActions := make(map[string]struct{}, len(names))
-
-	for _, action := range names {
-		if action == Wildcard {
-			return []string{Wildcard}, nil
-		}
-
-		isIAM, err := validateAction(action)
-		if err != nil {
-			return nil, err
-		}
-
-		if isIAM {
-			uniqueActions[action] = struct{}{}
-			continue
-		}
-
-		if action[len(s3ActionPrefix):] == Wildcard {
-			uniqueActions[action] = struct{}{}
-			continue
-		}
-
-		s3Actions := actionToS3OpMap[action]
-		if len(s3Actions) == 0 {
-			return nil, ErrActionsNotApplicable
-		}
-
-		for _, s3Action := range s3Actions {
-			uniqueActions[s3Action] = struct{}{}
-		}
-	}
-
-	res := make([]string, 0, len(uniqueActions))
-	for key := range uniqueActions {
-		res = append(res, key)
-	}
-
-	return res, nil
-}

iam/policy.go

@@ -46,8 +46,6 @@ type (
 	PrincipalType string
 )
 
-const policyVersion = "2012-10-17"
-
 const (
 	GeneralPolicyType PolicyType = iota
 	IdentityBasedPolicyType
@@ -224,20 +222,7 @@ func (p Policy) Validate(typ PolicyType) error {
 }
 
 func (p Policy) validate() error {
-	if p.Version != policyVersion {
-		return fmt.Errorf("invalid policy version, expected '%s', actual: '%s'", policyVersion, p.Version)
-	}
-
-	if len(p.Statement) == 0 {
-		return errors.New("'Statement' is missing")
-	}
-
-	sids := make(map[string]struct{}, len(p.Statement))
 	for _, statement := range p.Statement {
-		if _, ok := sids[statement.SID]; ok && statement.SID != "" {
-			return fmt.Errorf("duplicate 'SID': %s", statement.SID)
-		}
-		sids[statement.SID] = struct{}{}
 		if !statement.Effect.IsValid() {
 			return fmt.Errorf("unknown effect: '%s'", statement.Effect)
 		}

iam/policy_test.go

@@ -4,11 +4,6 @@ import (
 	"encoding/json"
 	"testing"
 
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource/testutil"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/s3"
 	"github.com/stretchr/testify/require"
 )
 
@@ -217,7 +212,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "valid permission boundaries",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -230,7 +224,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid effect",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   "dummy",
 					Action:   []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -243,7 +236,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid principal block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -258,7 +250,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid not principal",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -272,7 +263,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid principal type",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -286,7 +276,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid action block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    AllowEffect,
 					Action:    []string{"s3:*", "cloudwatch:*", "ec2:*"},
@@ -300,7 +289,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:      AllowEffect,
 					Resource:    []string{Wildcard},
@@ -313,7 +301,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "invalid resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:      AllowEffect,
 					Resource:    []string{},
@@ -326,7 +313,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "missing resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect: AllowEffect,
 				}},
@@ -334,49 +320,9 @@ func TestValidatePolicies(t *testing.T) {
 			typ:     GeneralPolicyType,
 			isValid: false,
 		},
-		{
-			name:    "missing statement block",
-			policy:  Policy{},
-			typ:     GeneralPolicyType,
-			isValid: false,
-		},
-		{
-			name: "duplicate sid",
-			policy: Policy{
-				Version: policyVersion,
-				Statement: []Statement{
-					{
-						SID:      "sid",
-						Effect:   AllowEffect,
-						Action:   []string{"s3:*"},
-						Resource: []string{Wildcard},
-					},
-					{
-						SID:      "sid",
-						Effect:   AllowEffect,
-						Action:   []string{"cloudwatch:*"},
-						Resource: []string{Wildcard},
-					}},
-			},
-			typ:     GeneralPolicyType,
-			isValid: false,
-		},
-		{
-			name: "missing version",
-			policy: Policy{
-				Statement: []Statement{{
-					Effect:   AllowEffect,
-					Action:   []string{"s3:*"},
-					Resource: []string{Wildcard},
-				}},
-			},
-			typ:     GeneralPolicyType,
-			isValid: false,
-		},
 		{
 			name: "identity based valid",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@@ -390,7 +336,6 @@ func TestValidatePolicies(t *testing.T) {
 			name: "identity based invalid because of id presence",
 			policy: Policy{
 				ID: "some-id",
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@@ -403,7 +348,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "identity based invalid because of principal presence",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    AllowEffect,
 					Action:    []string{"s3:PutObject"},
@@ -417,7 +361,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "identity based invalid because of not principal presence",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:PutObject"},
@@ -431,7 +374,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "resource based valid principal",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    DenyEffect,
 					Action:    []string{"s3:PutObject"},
@@ -446,7 +388,6 @@ func TestValidatePolicies(t *testing.T) {
 			name: "resource based valid not principal",
 			policy: Policy{
 				ID: "some-id",
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       DenyEffect,
 					Action:       []string{"s3:PutObject"},
@@ -461,7 +402,6 @@ func TestValidatePolicies(t *testing.T) {
 			name: "resource based invalid missing principal",
 			policy: Policy{
 				ID: "some-id",
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@@ -482,70 +422,3 @@ func TestValidatePolicies(t *testing.T) {
 		})
 	}
 }
-
-func TestProcessDenyFirst(t *testing.T) {
-	identityBasedPolicyStr := `
-{
-    "Version": "2012-10-17",
-    "Statement": [
-        {
-            "Effect": "Allow",
-			"Principal": {
-				"AWS": [ "arn:aws:iam::root:user/user-name" ]
-			},
-            "Action": ["s3:PutObject" ],
-            "Resource": "arn:aws:s3:::*"
-        }
-    ]
-}
-`
-
-	resourceBasedPolicyStr := `
-{
-    "Version": "2012-10-17",
-    "Statement": [
-        {
-            "Effect": "Deny",
-            "Principal": "*",
-            "Action": "s3:*",
-            "Resource": [ "arn:aws:s3:::test-bucket/*" ]
-        }
-    ]
-}
-`
-
-	var identityPolicy Policy
-	err := json.Unmarshal([]byte(identityBasedPolicyStr), &identityPolicy)
-	require.NoError(t, err)
-
-	var resourcePolicy Policy
-	err = json.Unmarshal([]byte(resourceBasedPolicyStr), &resourcePolicy)
-	require.NoError(t, err)
-
-	mockResolver := newMockUserResolver([]string{"root/user-name"}, []string{"test-bucket"}, "")
-
-	identityNativePolicy, err := ConvertToS3Chain(identityPolicy, mockResolver)
-	require.NoError(t, err)
-	identityNativePolicy.MatchType = chain.MatchTypeFirstMatch
-
-	resourceNativePolicy, err := ConvertToS3Chain(resourcePolicy, mockResolver)
-	require.NoError(t, err)
-
-	s := inmemory.NewInMemory()
-
-	target := engine.NamespaceTarget("ns")
-
-	_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.S3, target, identityNativePolicy)
-	require.NoError(t, err)
-
-	_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.S3, target, resourceNativePolicy)
-	require.NoError(t, err)
-
-	resource := testutil.NewResource("arn:aws:s3:::test-bucket/object", nil)
-	request := testutil.NewRequest("s3:PutObject", resource, map[string]string{s3.PropertyKeyOwner: mockResolver.users["root/user-name"]})
-
-	status, found, err := s.IsAllowed(chain.S3, engine.NewRequestTarget("ns", ""), request)
-	require.NoError(t, err)
-	require.True(t, found)
-	require.Equal(t, chain.AccessDenied, status)
-}

inmemory.go

@@ -0,0 +1,106 @@
+package policyengine
+
+type inmemory struct {
+	namespace map[Name][]chain
+	resource  map[Name][]chain
+	local     map[Name][]*Chain
+}
+
+type chain struct {
+	object string
+	chain  *Chain
+}
+
+// NewInMemory returns new inmemory instance of chain storage.
+func NewInMemory() CachedChainStorage {
+	return &inmemory{
+		namespace: make(map[Name][]chain),
+		resource:  make(map[Name][]chain),
+		local:     make(map[Name][]*Chain),
+	}
+}
+
+// IsAllowed implements the Engine interface.
+func (s *inmemory) IsAllowed(name Name, namespace string, r Request) (Status, bool) {
+	var ruleFound bool
+	if local, ok := s.local[name]; ok {
+		for _, c := range local {
+			if status, matched := c.Match(r); matched && status != Allow {
+				return status, true
+			}
+		}
+	}
+	if cs, ok := s.namespace[name]; ok {
+		status, ok := matchArray(cs, namespace, r)
+		if ok && status != Allow {
+			return status, true
+		}
+		ruleFound = ruleFound || ok
+	}
+	if cs, ok := s.resource[name]; ok {
+		status, ok := matchArray(cs, r.Resource().Name(), r)
+		if ok {
+			return status, true
+		}
+		ruleFound = ruleFound || ok
+	}
+	if ruleFound {
+		return Allow, true
+	}
+	return NoRuleFound, false
+}
+
+func matchArray(cs []chain, object string, r Request) (Status, bool) {
+	for _, c := range cs {
+		if !globMatch(object, c.object) {
+			continue
+		}
+		if status, matched := c.chain.Match(r); matched {
+			return status, true
+		}
+	}
+	return NoRuleFound, false
+}
+
+func (s *inmemory) AddResourceChain(name Name, resource string, c *Chain) {
+	s.resource[name] = append(s.resource[name], chain{resource, c})
+}
+
+func (s *inmemory) AddNameSpaceChain(name Name, namespace string, c *Chain) {
+	s.namespace[name] = append(s.namespace[name], chain{namespace, c})
+}
+
+func (s *inmemory) AddOverride(name Name, c *Chain) {
+	s.local[name] = append(s.local[name], c)
+}
+
+func (s *inmemory) GetOverride(name Name, chainID ChainID) (chain *Chain, found bool) {
+	chains := s.local[name]
+
+	for _, chain = range chains {
+		if chain.ID == chainID {
+			found = true
+			return
+		}
+	}
+
+	return
+}
+
+func (s *inmemory) RemoveOverride(name Name, chainID ChainID) (found bool) {
+	chains := s.local[name]
+
+	for i, chain := range chains {
+		if chain.ID == chainID {
+			s.local[name] = append(chains[:i], chains[i+1:]...)
+			found = true
+			return
+		}
+	}
+
+	return
+}
+
+func (s *inmemory) ListOverrides(name Name) []*Chain {
+	return s.local[name]
+}

inmemory_test.go

@@ -0,0 +1,193 @@
+package policyengine
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestInmemory(t *testing.T) {
+	const (
+		object     = "native::object::abc/xyz"
+		container  = "native::object::abc/*"
+		namespace  = "Tenant1"
+		namespace2 = "Tenant2"
+		actor1     = "owner1"
+		actor2     = "owner2"
+	)
+
+	s := NewInMemory()
+
+	// Object which was put via S3.
+	res := newResource(object, map[string]string{"FromS3": "true"})
+	// Request initiating from the trusted subnet and actor.
+	reqGood := newRequest("native::object::put", res, map[string]string{
+		"SourceIP": "10.1.1.12",
+		"Actor":    actor1,
+	})
+
+	status, ok := s.IsAllowed(Ingress, namespace, reqGood)
+	require.Equal(t, NoRuleFound, status)
+	require.False(t, ok)
+
+	s.AddNameSpaceChain(Ingress, namespace, &Chain{
+		Rules: []Rule{
+			{ // Restrict to remove ANY object from the namespace.
+				Status:    AccessDenied,
+				Actions:   Actions{Names: []string{"native::object::delete"}},
+				Resources: Resources{Names: []string{"native::object::*"}},
+			},
+			{ // Allow to put object only from the trusted subnet AND trusted actor, deny otherwise.
+				Status:    AccessDenied,
+				Actions:   Actions{Names: []string{"native::object::put"}},
+				Resources: Resources{Names: []string{"native::object::*"}},
+				Any:       true,
+				Condition: []Condition{
+					{
+						Op:     CondStringNotLike,
+						Object: ObjectRequest,
+						Key:    "SourceIP",
+						Value:  "10.1.1.*",
+					},
+					{
+						Op:     CondStringNotEquals,
+						Object: ObjectRequest,
+						Key:    "Actor",
+						Value:  actor1,
+					},
+				},
+			},
+		},
+	})
+
+	s.AddNameSpaceChain(Ingress, namespace2, &Chain{
+		Rules: []Rule{
+			{ // Deny all expect "native::object::get" for all objects expect "native::object::abc/xyz".
+				Status:    AccessDenied,
+				Actions:   Actions{Inverted: true, Names: []string{"native::object::get"}},
+				Resources: Resources{Inverted: true, Names: []string{object}},
+			},
+		},
+	})
+
+	s.AddResourceChain(Ingress, container, &Chain{
+		Rules: []Rule{
+			{ // Allow to actor2 to get objects from the specific container only if they have `Department=HR` attribute.
+				Status:    Allow,
+				Actions:   Actions{Names: []string{"native::object::get"}},
+				Resources: Resources{Names: []string{"native::object::abc/*"}},
+				Condition: []Condition{
+					{
+						Op:     CondStringEquals,
+						Object: ObjectResource,
+						Key:    "Department",
+						Value:  "HR",
+					},
+					{
+						Op:     CondStringEquals,
+						Object: ObjectRequest,
+						Key:    "Actor",
+						Value:  actor2,
+					},
+				},
+			},
+		},
+	})
+
+	t.Run("bad subnet, namespace deny", func(t *testing.T) {
+		// Request initiating from the untrusted subnet.
+		reqBadIP := newRequest("native::object::put", res, map[string]string{
+			"SourceIP": "10.122.1.20",
+			"Actor":    actor1,
+		})
+		status, ok := s.IsAllowed(Ingress, namespace, reqBadIP)
+		require.Equal(t, AccessDenied, status)
+		require.True(t, ok)
+	})
+	t.Run("bad actor, namespace deny", func(t *testing.T) {
+		// Request initiating from the untrusted actor.
+		reqBadActor := newRequest("native::object::put", res, map[string]string{
+			"SourceIP": "10.1.1.13",
+			"Actor":    actor2,
+		})
+		status, ok := s.IsAllowed(Ingress, namespace, reqBadActor)
+		require.Equal(t, AccessDenied, status)
+		require.True(t, ok)
+	})
+	t.Run("bad object, container deny", func(t *testing.T) {
+		objGood := newResource("native::object::abc/id1", map[string]string{"Department": "HR"})
+		objBadAttr := newResource("native::object::abc/id2", map[string]string{"Department": "Support"})
+
+		status, ok := s.IsAllowed(Ingress, namespace, newRequest("native::object::get", objGood, map[string]string{
+			"SourceIP": "10.1.1.14",
+			"Actor":    actor2,
+		}))
+		require.Equal(t, Allow, status)
+		require.True(t, ok)
+
+		status, ok = s.IsAllowed(Ingress, namespace, newRequest("native::object::get", objBadAttr, map[string]string{
+			"SourceIP": "10.1.1.14",
+			"Actor":    actor2,
+		}))
+		require.Equal(t, NoRuleFound, status)
+		require.False(t, ok)
+	})
+	t.Run("bad operation, namespace deny", func(t *testing.T) {
+		// Request with the forbidden operation.
+		reqBadOperation := newRequest("native::object::delete", res, map[string]string{
+			"SourceIP": "10.1.1.12",
+			"Actor":    actor1,
+		})
+		status, ok := s.IsAllowed(Ingress, namespace, reqBadOperation)
+		require.Equal(t, AccessDenied, status)
+		require.True(t, ok)
+	})
+	t.Run("inverted rules", func(t *testing.T) {
+		req := newRequest("native::object::put", newResource(object, nil), nil)
+		status, ok = s.IsAllowed(Ingress, namespace2, req)
+		require.Equal(t, NoRuleFound, status)
+		require.False(t, ok)
+
+		req = newRequest("native::object::put", newResource("native::object::cba/def", nil), nil)
+		status, ok = s.IsAllowed(Ingress, namespace2, req)
+		require.Equal(t, AccessDenied, status)
+		require.True(t, ok)
+
+		req = newRequest("native::object::get", newResource("native::object::cba/def", nil), nil)
+		status, ok = s.IsAllowed(Ingress, namespace2, req)
+		require.Equal(t, NoRuleFound, status)
+		require.False(t, ok)
+	})
+	t.Run("good", func(t *testing.T) {
+		status, ok = s.IsAllowed(Ingress, namespace, reqGood)
+		require.Equal(t, NoRuleFound, status)
+		require.False(t, ok)
+
+		t.Run("quota on a different container", func(t *testing.T) {
+			s.AddOverride(Ingress, &Chain{
+				Rules: []Rule{{
+					Status:    QuotaLimitReached,
+					Actions:   Actions{Names: []string{"native::object::put"}},
+					Resources: Resources{Names: []string{"native::object::cba/*"}},
+				}},
+			})
+
+			status, ok = s.IsAllowed(Ingress, namespace, reqGood)
+			require.Equal(t, NoRuleFound, status)
+			require.False(t, ok)
+		})
+		t.Run("quota on the request container", func(t *testing.T) {
+			s.AddOverride(Ingress, &Chain{
+				Rules: []Rule{{
+					Status:    QuotaLimitReached,
+					Actions:   Actions{Names: []string{"native::object::put"}},
+					Resources: Resources{Names: []string{"native::object::abc/*"}},
+				}},
+			})
+
+			status, ok = s.IsAllowed(Ingress, namespace, reqGood)
+			require.Equal(t, QuotaLimitReached, status)
+			require.True(t, ok)
+		})
+	})
+}

interface.go

@@ -0,0 +1,18 @@
+package policyengine
+
+// CachedChainStorage ...
+type CachedChainStorage interface {
+	Engine
+	// Adds a policy chain used for all operations with a specific resource.
+	AddResourceChain(name Name, resource string, c *Chain)
+	// Adds a policy chain used for all operations in the namespace.
+	AddNameSpaceChain(name Name, namespace string, c *Chain)
+	// Adds a local policy chain used for all operations with this service.
+	AddOverride(name Name, c *Chain)
+	// Gets the local override with given chain id.
+	GetOverride(name Name, chainID ChainID) (chain *Chain, found bool)
+	// Remove the local override with given chain id.
+	RemoveOverride(name Name, chainID ChainID) (removed bool)
+	// ListOverrides returns the list of local overrides.
+	ListOverrides(name Name) []*Chain
+}

pkg/chain/chain.go

@@ -1,333 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"net/netip"
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-	"git.frostfs.info/TrueCloudLab/policy-engine/util"
-	"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
-	"golang.org/x/exp/slices"
-)
-
-// ID is the ID of rule chain.
-type ID []byte
-
-// MatchType is the match type for chain rules.
-type MatchType uint8
-
-const (
-	// MatchTypeDenyPriority rejects the request if any `Deny` is specified.
-	MatchTypeDenyPriority MatchType = 0
-	// MatchTypeFirstMatch returns the first rule action matched to the request.
-	MatchTypeFirstMatch MatchType = 1
-)
-
-//easyjson:json
-type Chain struct {
-	ID ID
-
-	Rules []Rule
-
-	MatchType MatchType
-}
-
-func (c *Chain) Bytes() []byte {
-	data, err := c.MarshalBinary()
-	if err != nil {
-		panic(err)
-	}
-	return data
-}
-
-func (c *Chain) DecodeBytes(b []byte) error {
-	return c.UnmarshalBinary(b)
-}
-
-type Rule struct {
-	Status Status
-	// Actions the operation is applied to.
-	Actions Actions
-	// List of the resources the operation is applied to.
-	Resources Resources
-	// True iff individual conditions must be combined with the logical OR.
-	// By default AND is used, so _each_ condition must pass.
-	Any       bool
-	Condition []Condition
-}
-
-type Actions struct {
-	Inverted bool
-	Names    []string
-}
-
-type Resources struct {
-	Inverted bool
-	Names    []string
-}
-
-type Condition struct {
-	Op    ConditionType
-	Kind  ConditionKindType
-	Key   string
-	Value string
-}
-
-type ConditionKindType byte
-
-const (
-	KindResource ConditionKindType = iota
-	KindRequest
-)
-
-type ConditionType byte
-
-// TODO @fyrchik: reduce the number of conditions.
-// Everything from here should be expressable, but we do not need them all.
-// https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition_operators.html
-const (
-	// String condition operators.
-	CondStringEquals ConditionType = iota
-	CondStringNotEquals
-	CondStringEqualsIgnoreCase
-	CondStringNotEqualsIgnoreCase
-	CondStringLike
-	CondStringNotLike
-	CondStringLessThan
-	CondStringLessThanEquals
-	CondStringGreaterThan
-	CondStringGreaterThanEquals
-
-	// Numeric condition operators.
-	CondNumericEquals
-	CondNumericNotEquals
-	CondNumericLessThan
-	CondNumericLessThanEquals
-	CondNumericGreaterThan
-	CondNumericGreaterThanEquals
-
-	CondSliceContains
-
-	CondIPAddress
-	CondNotIPAddress
-)
-
-var condToStr = []struct {
-	ct  ConditionType
-	str string
-}{
-	{CondStringEquals, "StringEquals"},
-	{CondStringNotEquals, "StringNotEquals"},
-	{CondStringEqualsIgnoreCase, "StringEqualsIgnoreCase"},
-	{CondStringNotEqualsIgnoreCase, "StringNotEqualsIgnoreCase"},
-	{CondStringLike, "StringLike"},
-	{CondStringNotLike, "StringNotLike"},
-	{CondStringLessThan, "StringLessThan"},
-	{CondStringLessThanEquals, "StringLessThanEquals"},
-	{CondStringGreaterThan, "StringGreaterThan"},
-	{CondStringGreaterThanEquals, "StringGreaterThanEquals"},
-	{CondNumericEquals, "NumericEquals"},
-	{CondNumericNotEquals, "NumericNotEquals"},
-	{CondNumericLessThan, "NumericLessThan"},
-	{CondNumericLessThanEquals, "NumericLessThanEquals"},
-	{CondNumericGreaterThan, "NumericGreaterThan"},
-	{CondNumericGreaterThanEquals, "NumericGreaterThanEquals"},
-	{CondSliceContains, "SliceContains"},
-	{CondIPAddress, "IPAddress"},
-	{CondNotIPAddress, "NotIPAddress"},
-}
-
-func (c ConditionType) String() string {
-	for _, v := range condToStr {
-		if v.ct == c {
-			return v.str
-		}
-	}
-	return "unknown condition type"
-}
-
-const condSliceContainsDelimiter = "\x00"
-
-// FormCondSliceContainsValue builds value for ObjectResource or ObjectRequest property
-// that can be matched by CondSliceContains condition.
-func FormCondSliceContainsValue(values []string) string {
-	return strings.Join(values, condSliceContainsDelimiter)
-}
-
-func (c *Condition) Match(req resource.Request) bool {
-	var val string
-	switch c.Kind {
-	case KindResource:
-		val = req.Resource().Property(c.Key)
-	case KindRequest:
-		val = req.Property(c.Key)
-	default:
-		panic(fmt.Sprintf("unknown condition type: %d", c.Kind))
-	}
-
-	switch c.Op {
-	default:
-		panic(fmt.Sprintf("unimplemented: %d", c.Op))
-	case CondStringEquals:
-		return val == c.Value
-	case CondStringNotEquals:
-		return val != c.Value
-	case CondStringEqualsIgnoreCase:
-		return strings.EqualFold(val, c.Value)
-	case CondStringNotEqualsIgnoreCase:
-		return !strings.EqualFold(val, c.Value)
-	case CondStringLike:
-		return util.GlobMatch(val, c.Value)
-	case CondStringNotLike:
-		return !util.GlobMatch(val, c.Value)
-	case CondStringLessThan:
-		return val < c.Value
-	case CondStringLessThanEquals:
-		return val <= c.Value
-	case CondStringGreaterThan:
-		return val > c.Value
-	case CondStringGreaterThanEquals:
-		return val >= c.Value
-	case CondSliceContains:
-		return slices.Contains(strings.Split(val, condSliceContainsDelimiter), c.Value)
-	case CondNumericEquals, CondNumericNotEquals, CondNumericLessThan, CondNumericLessThanEquals, CondNumericGreaterThan,
-		CondNumericGreaterThanEquals:
-		return c.matchNumeric(val)
-	case CondIPAddress, CondNotIPAddress:
-		return c.matchIP(val)
-	}
-}
-
-func (c *Condition) matchNumeric(val string) bool {
-	valDecimal, err := fixedn.Fixed8FromString(val)
-	if err != nil {
-		return c.Op == CondNumericNotEquals
-	}
-
-	condVal, err := fixedn.Fixed8FromString(c.Value)
-	if err != nil {
-		return c.Op == CondNumericNotEquals
-	}
-
-	switch c.Op {
-	default:
-		panic(fmt.Sprintf("unimplemented: %d", c.Op))
-	case CondNumericEquals:
-		return valDecimal.Equal(condVal)
-	case CondNumericNotEquals:
-		return !valDecimal.Equal(condVal)
-	case CondNumericLessThan:
-		return valDecimal.LessThan(condVal)
-	case CondNumericLessThanEquals:
-		return valDecimal.LessThan(condVal) || valDecimal.Equal(condVal)
-	case CondNumericGreaterThan:
-		return valDecimal.GreaterThan(condVal)
-	case CondNumericGreaterThanEquals:
-		return valDecimal.GreaterThan(condVal) || valDecimal.Equal(condVal)
-	}
-}
-
-func (c *Condition) matchIP(val string) bool {
-	ipAddr, err := netip.ParseAddr(val)
-	if err != nil {
-		return false
-	}
-
-	prefix, err := netip.ParsePrefix(c.Value)
-	if err != nil {
-		return false
-	}
-
-	switch c.Op {
-	default:
-		panic(fmt.Sprintf("unimplemented: %d", c.Op))
-	case CondIPAddress:
-		return prefix.Contains(ipAddr)
-	case CondNotIPAddress:
-		return !prefix.Contains(ipAddr)
-	}
-}
-
-func (r *Rule) Match(req resource.Request) (status Status, matched bool) {
-	found := len(r.Resources.Names) == 0
-	for i := range r.Resources.Names {
-		if util.GlobMatch(req.Resource().Name(), r.Resources.Names[i]) != r.Resources.Inverted {
-			found = true
-			break
-		}
-	}
-	if !found {
-		return NoRuleFound, false
-	}
-	for i := range r.Actions.Names {
-		if util.GlobMatch(req.Operation(), r.Actions.Names[i]) != r.Actions.Inverted {
-			return r.matchCondition(req)
-		}
-	}
-	return NoRuleFound, false
-}
-
-func (r *Rule) matchCondition(obj resource.Request) (status Status, matched bool) {
-	if r.Any {
-		return r.matchAny(obj)
-	}
-	return r.matchAll(obj)
-}
-
-func (r *Rule) matchAny(obj resource.Request) (status Status, matched bool) {
-	for i := range r.Condition {
-		if r.Condition[i].Match(obj) {
-			return r.Status, true
-		}
-	}
-	return NoRuleFound, false
-}
-
-func (r *Rule) matchAll(obj resource.Request) (status Status, matched bool) {
-	for i := range r.Condition {
-		if !r.Condition[i].Match(obj) {
-			return NoRuleFound, false
-		}
-	}
-	return r.Status, true
-}
-
-func (c *Chain) Match(req resource.Request) (status Status, matched bool) {
-	switch c.MatchType {
-	case MatchTypeDenyPriority:
-		return c.denyPriority(req)
-	case MatchTypeFirstMatch:
-		return c.firstMatch(req)
-	default:
-		panic(fmt.Sprintf("unknown MatchType %d", c.MatchType))
-	}
-}
-
-func (c *Chain) firstMatch(req resource.Request) (status Status, matched bool) {
-	for i := range c.Rules {
-		status, matched := c.Rules[i].Match(req)
-		if matched {
-			return status, true
-		}
-	}
-	return NoRuleFound, false
-}
-
-func (c *Chain) denyPriority(req resource.Request) (status Status, matched bool) {
-	var allowFound bool
-	for i := range c.Rules {
-		status, matched := c.Rules[i].Match(req)
-		if !matched {
-			continue
-		}
-		if status != Allow {
-			return status, true
-		}
-		allowFound = true
-	}
-	if allowFound {
-		return Allow, true
-	}
-	return NoRuleFound, false
-}

pkg/chain/chain_easyjson.go

@@ -1,463 +0,0 @@
-// Code generated by easyjson for marshaling/unmarshaling. DO NOT EDIT.
-
-package chain
-
-import (
-	json "encoding/json"
-	easyjson "github.com/mailru/easyjson"
-	jlexer "github.com/mailru/easyjson/jlexer"
-	jwriter "github.com/mailru/easyjson/jwriter"
-)
-
-// suppress unused package warning
-var (
-	_ *json.RawMessage
-	_ *jlexer.Lexer
-	_ *jwriter.Writer
-	_ easyjson.Marshaler
-)
-
-func easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(in *jlexer.Lexer, out *Chain) {
-	isTopLevel := in.IsStart()
-	if in.IsNull() {
-		if isTopLevel {
-			in.Consumed()
-		}
-		in.Skip()
-		return
-	}
-	in.Delim('{')
-	for !in.IsDelim('}') {
-		key := in.UnsafeFieldName(false)
-		in.WantColon()
-		if in.IsNull() {
-			in.Skip()
-			in.WantComma()
-			continue
-		}
-		switch key {
-		case "ID":
-			if in.IsNull() {
-				in.Skip()
-				out.ID = nil
-			} else {
-				out.ID = in.Bytes()
-			}
-		case "Rules":
-			if in.IsNull() {
-				in.Skip()
-				out.Rules = nil
-			} else {
-				in.Delim('[')
-				if out.Rules == nil {
-					if !in.IsDelim(']') {
-						out.Rules = make([]Rule, 0, 0)
-					} else {
-						out.Rules = []Rule{}
-					}
-				} else {
-					out.Rules = (out.Rules)[:0]
-				}
-				for !in.IsDelim(']') {
-					var v2 Rule
-					easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain1(in, &v2)
-					out.Rules = append(out.Rules, v2)
-					in.WantComma()
-				}
-				in.Delim(']')
-			}
-		case "MatchType":
-			(out.MatchType).UnmarshalEasyJSON(in)
-		default:
-			in.SkipRecursive()
-		}
-		in.WantComma()
-	}
-	in.Delim('}')
-	if isTopLevel {
-		in.Consumed()
-	}
-}
-func easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(out *jwriter.Writer, in Chain) {
-	out.RawByte('{')
-	first := true
-	_ = first
-	{
-		const prefix string = ",\"ID\":"
-		out.RawString(prefix[1:])
-		out.Base64Bytes(in.ID)
-	}
-	{
-		const prefix string = ",\"Rules\":"
-		out.RawString(prefix)
-		if in.Rules == nil && (out.Flags&jwriter.NilSliceAsEmpty) == 0 {
-			out.RawString("null")
-		} else {
-			out.RawByte('[')
-			for v5, v6 := range in.Rules {
-				if v5 > 0 {
-					out.RawByte(',')
-				}
-				easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain1(out, v6)
-			}
-			out.RawByte(']')
-		}
-	}
-	{
-		const prefix string = ",\"MatchType\":"
-		out.RawString(prefix)
-		(in.MatchType).MarshalEasyJSON(out)
-	}
-	out.RawByte('}')
-}
-
-// MarshalJSON supports json.Marshaler interface
-func (v Chain) MarshalJSON() ([]byte, error) {
-	w := jwriter.Writer{}
-	easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(&w, v)
-	return w.Buffer.BuildBytes(), w.Error
-}
-
-// MarshalEasyJSON supports easyjson.Marshaler interface
-func (v Chain) MarshalEasyJSON(w *jwriter.Writer) {
-	easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(w, v)
-}
-
-// UnmarshalJSON supports json.Unmarshaler interface
-func (v *Chain) UnmarshalJSON(data []byte) error {
-	r := jlexer.Lexer{Data: data}
-	easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(&r, v)
-	return r.Error()
-}
-
-// UnmarshalEasyJSON supports easyjson.Unmarshaler interface
-func (v *Chain) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain(l, v)
-}
-func easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain1(in *jlexer.Lexer, out *Rule) {
-	isTopLevel := in.IsStart()
-	if in.IsNull() {
-		if isTopLevel {
-			in.Consumed()
-		}
-		in.Skip()
-		return
-	}
-	in.Delim('{')
-	for !in.IsDelim('}') {
-		key := in.UnsafeFieldName(false)
-		in.WantColon()
-		if in.IsNull() {
-			in.Skip()
-			in.WantComma()
-			continue
-		}
-		switch key {
-		case "Status":
-			(out.Status).UnmarshalEasyJSON(in)
-		case "Actions":
-			easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain2(in, &out.Actions)
-		case "Resources":
-			easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain3(in, &out.Resources)
-		case "Any":
-			out.Any = bool(in.Bool())
-		case "Condition":
-			if in.IsNull() {
-				in.Skip()
-				out.Condition = nil
-			} else {
-				in.Delim('[')
-				if out.Condition == nil {
-					if !in.IsDelim(']') {
-						out.Condition = make([]Condition, 0, 1)
-					} else {
-						out.Condition = []Condition{}
-					}
-				} else {
-					out.Condition = (out.Condition)[:0]
-				}
-				for !in.IsDelim(']') {
-					var v7 Condition
-					easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain4(in, &v7)
-					out.Condition = append(out.Condition, v7)
-					in.WantComma()
-				}
-				in.Delim(']')
-			}
-		default:
-			in.SkipRecursive()
-		}
-		in.WantComma()
-	}
-	in.Delim('}')
-	if isTopLevel {
-		in.Consumed()
-	}
-}
-func easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain1(out *jwriter.Writer, in Rule) {
-	out.RawByte('{')
-	first := true
-	_ = first
-	{
-		const prefix string = ",\"Status\":"
-		out.RawString(prefix[1:])
-		(in.Status).MarshalEasyJSON(out)
-	}
-	{
-		const prefix string = ",\"Actions\":"
-		out.RawString(prefix)
-		easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain2(out, in.Actions)
-	}
-	{
-		const prefix string = ",\"Resources\":"
-		out.RawString(prefix)
-		easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain3(out, in.Resources)
-	}
-	{
-		const prefix string = ",\"Any\":"
-		out.RawString(prefix)
-		out.Bool(bool(in.Any))
-	}
-	{
-		const prefix string = ",\"Condition\":"
-		out.RawString(prefix)
-		if in.Condition == nil && (out.Flags&jwriter.NilSliceAsEmpty) == 0 {
-			out.RawString("null")
-		} else {
-			out.RawByte('[')
-			for v8, v9 := range in.Condition {
-				if v8 > 0 {
-					out.RawByte(',')
-				}
-				easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain4(out, v9)
-			}
-			out.RawByte(']')
-		}
-	}
-	out.RawByte('}')
-}
-func easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain4(in *jlexer.Lexer, out *Condition) {
-	isTopLevel := in.IsStart()
-	if in.IsNull() {
-		if isTopLevel {
-			in.Consumed()
-		}
-		in.Skip()
-		return
-	}
-	in.Delim('{')
-	for !in.IsDelim('}') {
-		key := in.UnsafeFieldName(false)
-		in.WantColon()
-		if in.IsNull() {
-			in.Skip()
-			in.WantComma()
-			continue
-		}
-		switch key {
-		case "Op":
-			(out.Op).UnmarshalEasyJSON(in)
-		case "Kind":
-			(out.Kind).UnmarshalEasyJSON(in)
-		case "Key":
-			out.Key = string(in.String())
-		case "Value":
-			out.Value = string(in.String())
-		default:
-			in.SkipRecursive()
-		}
-		in.WantComma()
-	}
-	in.Delim('}')
-	if isTopLevel {
-		in.Consumed()
-	}
-}
-func easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain4(out *jwriter.Writer, in Condition) {
-	out.RawByte('{')
-	first := true
-	_ = first
-	{
-		const prefix string = ",\"Op\":"
-		out.RawString(prefix[1:])
-		(in.Op).MarshalEasyJSON(out)
-	}
-	{
-		const prefix string = ",\"Kind\":"
-		out.RawString(prefix)
-		(in.Kind).MarshalEasyJSON(out)
-	}
-	{
-		const prefix string = ",\"Key\":"
-		out.RawString(prefix)
-		out.String(string(in.Key))
-	}
-	{
-		const prefix string = ",\"Value\":"
-		out.RawString(prefix)
-		out.String(string(in.Value))
-	}
-	out.RawByte('}')
-}
-func easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain3(in *jlexer.Lexer, out *Resources) {
-	isTopLevel := in.IsStart()
-	if in.IsNull() {
-		if isTopLevel {
-			in.Consumed()
-		}
-		in.Skip()
-		return
-	}
-	in.Delim('{')
-	for !in.IsDelim('}') {
-		key := in.UnsafeFieldName(false)
-		in.WantColon()
-		if in.IsNull() {
-			in.Skip()
-			in.WantComma()
-			continue
-		}
-		switch key {
-		case "Inverted":
-			out.Inverted = bool(in.Bool())
-		case "Names":
-			if in.IsNull() {
-				in.Skip()
-				out.Names = nil
-			} else {
-				in.Delim('[')
-				if out.Names == nil {
-					if !in.IsDelim(']') {
-						out.Names = make([]string, 0, 4)
-					} else {
-						out.Names = []string{}
-					}
-				} else {
-					out.Names = (out.Names)[:0]
-				}
-				for !in.IsDelim(']') {
-					var v10 string
-					v10 = string(in.String())
-					out.Names = append(out.Names, v10)
-					in.WantComma()
-				}
-				in.Delim(']')
-			}
-		default:
-			in.SkipRecursive()
-		}
-		in.WantComma()
-	}
-	in.Delim('}')
-	if isTopLevel {
-		in.Consumed()
-	}
-}
-func easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain3(out *jwriter.Writer, in Resources) {
-	out.RawByte('{')
-	first := true
-	_ = first
-	{
-		const prefix string = ",\"Inverted\":"
-		out.RawString(prefix[1:])
-		out.Bool(bool(in.Inverted))
-	}
-	{
-		const prefix string = ",\"Names\":"
-		out.RawString(prefix)
-		if in.Names == nil && (out.Flags&jwriter.NilSliceAsEmpty) == 0 {
-			out.RawString("null")
-		} else {
-			out.RawByte('[')
-			for v11, v12 := range in.Names {
-				if v11 > 0 {
-					out.RawByte(',')
-				}
-				out.String(string(v12))
-			}
-			out.RawByte(']')
-		}
-	}
-	out.RawByte('}')
-}
-func easyjsonE2758465DecodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain2(in *jlexer.Lexer, out *Actions) {
-	isTopLevel := in.IsStart()
-	if in.IsNull() {
-		if isTopLevel {
-			in.Consumed()
-		}
-		in.Skip()
-		return
-	}
-	in.Delim('{')
-	for !in.IsDelim('}') {
-		key := in.UnsafeFieldName(false)
-		in.WantColon()
-		if in.IsNull() {
-			in.Skip()
-			in.WantComma()
-			continue
-		}
-		switch key {
-		case "Inverted":
-			out.Inverted = bool(in.Bool())
-		case "Names":
-			if in.IsNull() {
-				in.Skip()
-				out.Names = nil
-			} else {
-				in.Delim('[')
-				if out.Names == nil {
-					if !in.IsDelim(']') {
-						out.Names = make([]string, 0, 4)
-					} else {
-						out.Names = []string{}
-					}
-				} else {
-					out.Names = (out.Names)[:0]
-				}
-				for !in.IsDelim(']') {
-					var v13 string
-					v13 = string(in.String())
-					out.Names = append(out.Names, v13)
-					in.WantComma()
-				}
-				in.Delim(']')
-			}
-		default:
-			in.SkipRecursive()
-		}
-		in.WantComma()
-	}
-	in.Delim('}')
-	if isTopLevel {
-		in.Consumed()
-	}
-}
-func easyjsonE2758465EncodeGitFrostfsInfoTrueCloudLabPolicyEnginePkgChain2(out *jwriter.Writer, in Actions) {
-	out.RawByte('{')
-	first := true
-	_ = first
-	{
-		const prefix string = ",\"Inverted\":"
-		out.RawString(prefix[1:])
-		out.Bool(bool(in.Inverted))
-	}
-	{
-		const prefix string = ",\"Names\":"
-		out.RawString(prefix)
-		if in.Names == nil && (out.Flags&jwriter.NilSliceAsEmpty) == 0 {
-			out.RawString("null")
-		} else {
-			out.RawByte('[')
-			for v14, v15 := range in.Names {
-				if v14 > 0 {
-					out.RawByte(',')
-				}
-				out.String(string(v15))
-			}
-			out.RawByte(']')
-		}
-	}
-	out.RawByte('}')
-}

pkg/chain/marshal_binary.go

@@ -1,257 +0,0 @@
-package chain
-
-import (
-	"encoding"
-	"fmt"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/marshal"
-)
-
-const (
-	ChainMarshalVersion uint8 = 0 // increase if breaking change
-)
-
-var (
-	_ encoding.BinaryMarshaler   = (*Chain)(nil)
-	_ encoding.BinaryUnmarshaler = (*Chain)(nil)
-)
-
-func (c *Chain) MarshalBinary() ([]byte, error) {
-	s := marshal.UInt8Size // Marshaller version
-	s += marshal.UInt8Size // Chain version
-	s += marshal.SliceSize(c.ID, func(byte) int { return marshal.ByteSize })
-	s += marshal.SliceSize(c.Rules, ruleSize)
-	s += marshal.UInt8Size // MatchType
-
-	buf := make([]byte, s)
-	var offset int
-	var err error
-	offset, err = marshal.UInt8Marshal(buf, offset, marshal.Version)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.UInt8Marshal(buf, offset, ChainMarshalVersion)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.SliceMarshal(buf, offset, c.ID, marshal.ByteMarshal)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.SliceMarshal(buf, offset, c.Rules, marshalRule)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.UInt8Marshal(buf, offset, uint8(c.MatchType))
-	if err != nil {
-		return nil, err
-	}
-
-	if err := marshal.VerifyMarshal(buf, offset); err != nil {
-		return nil, err
-	}
-	return buf, nil
-}
-
-func (c *Chain) UnmarshalBinary(data []byte) error {
-	var offset int
-
-	marshallerVersion, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	if marshallerVersion != marshal.Version {
-		return fmt.Errorf("unsupported marshaller version %d", marshallerVersion)
-	}
-
-	chainVersion, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	if chainVersion != ChainMarshalVersion {
-		return fmt.Errorf("unsupported chain version %d", chainVersion)
-	}
-
-	idBytes, offset, err := marshal.SliceUnmarshal(data, offset, marshal.ByteUnmarshal)
-	if err != nil {
-		return err
-	}
-	c.ID = ID(idBytes)
-
-	c.Rules, offset, err = marshal.SliceUnmarshal(data, offset, unmarshalRule)
-	if err != nil {
-		return err
-	}
-
-	matchTypeV, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	c.MatchType = MatchType(matchTypeV)
-
-	return marshal.VerifyUnmarshal(data, offset)
-}
-
-func ruleSize(r Rule) int {
-	s := marshal.ByteSize // Status
-	s += actionsSize(r.Actions)
-	s += resourcesSize(r.Resources)
-	s += marshal.BoolSize // Any
-	s += marshal.SliceSize(r.Condition, conditionSize)
-	return s
-}
-
-func marshalRule(buf []byte, offset int, r Rule) (int, error) {
-	offset, err := marshal.ByteMarshal(buf, offset, byte(r.Status))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshalActions(buf, offset, r.Actions)
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshalResources(buf, offset, r.Resources)
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.BoolMarshal(buf, offset, r.Any)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, r.Condition, marshalCondition)
-}
-
-func unmarshalRule(buf []byte, offset int) (Rule, int, error) {
-	var r Rule
-	statusV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-	r.Status = Status(statusV)
-
-	r.Actions, offset, err = unmarshalActions(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Resources, offset, err = unmarshalResources(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Any, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Condition, offset, err = marshal.SliceUnmarshal(buf, offset, unmarshalCondition)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	return r, offset, nil
-}
-
-func actionsSize(a Actions) int {
-	return marshal.BoolSize + // Inverted
-		marshal.SliceSize(a.Names, marshal.StringSize)
-}
-
-func marshalActions(buf []byte, offset int, a Actions) (int, error) {
-	offset, err := marshal.BoolMarshal(buf, offset, a.Inverted)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, a.Names, marshal.StringMarshal)
-}
-
-func unmarshalActions(buf []byte, offset int) (Actions, int, error) {
-	var a Actions
-	var err error
-	a.Inverted, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Actions{}, 0, err
-	}
-	a.Names, offset, err = marshal.SliceUnmarshal(buf, offset, marshal.StringUnmarshal)
-	if err != nil {
-		return Actions{}, 0, err
-	}
-	return a, offset, nil
-}
-
-func resourcesSize(r Resources) int {
-	return marshal.BoolSize + // Inverted
-		marshal.SliceSize(r.Names, marshal.StringSize)
-}
-
-func marshalResources(buf []byte, offset int, r Resources) (int, error) {
-	offset, err := marshal.BoolMarshal(buf, offset, r.Inverted)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, r.Names, marshal.StringMarshal)
-}
-
-func unmarshalResources(buf []byte, offset int) (Resources, int, error) {
-	var r Resources
-	var err error
-	r.Inverted, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Resources{}, 0, err
-	}
-	r.Names, offset, err = marshal.SliceUnmarshal(buf, offset, marshal.StringUnmarshal)
-	if err != nil {
-		return Resources{}, 0, err
-	}
-	return r, offset, nil
-}
-
-func conditionSize(c Condition) int {
-	return marshal.ByteSize + // Op
-		marshal.ByteSize + // Object
-		marshal.StringSize(c.Key) +
-		marshal.StringSize(c.Value)
-}
-
-func marshalCondition(buf []byte, offset int, c Condition) (int, error) {
-	offset, err := marshal.ByteMarshal(buf, offset, byte(c.Op))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.ByteMarshal(buf, offset, byte(c.Kind))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.StringMarshal(buf, offset, c.Key)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.StringMarshal(buf, offset, c.Value)
-}
-
-func unmarshalCondition(buf []byte, offset int) (Condition, int, error) {
-	var c Condition
-	opV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-	c.Op = ConditionType(opV)
-
-	obV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-	c.Kind = ConditionKindType(obV)
-
-	c.Key, offset, err = marshal.StringUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-
-	c.Value, offset, err = marshal.StringUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-
-	return c, offset, nil
-}

pkg/chain/marshal_binary_test.go

@@ -1,247 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-	"github.com/google/uuid"
-	"github.com/stretchr/testify/require"
-)
-
-func TestChainMarshalling(t *testing.T) {
-	t.Parallel()
-	for _, id := range generateTestIDs() {
-		for _, rules := range generateTestRules() {
-			for _, matchType := range generateTestMatchTypes() {
-				performMarshalTest(t, id, rules, matchType)
-			}
-		}
-	}
-}
-
-func TestInvalidChainData(t *testing.T) {
-	var ch Chain
-	require.Error(t, ch.UnmarshalBinary(nil))
-	require.Error(t, ch.UnmarshalBinary([]byte{}))
-	require.Error(t, ch.UnmarshalBinary([]byte{1, 2, 3}))
-	require.Error(t, ch.UnmarshalBinary([]byte("\x00\x00:aws:iam::namespace:group/so\x82\x82\x82\x82\x82\x82u\x82")))
-}
-
-func performMarshalTest(t *testing.T, id ID, r []Rule, mt MatchType) {
-	chain := Chain{
-		ID:        id,
-		Rules:     r,
-		MatchType: mt,
-	}
-	data, err := chain.MarshalBinary()
-	require.NoError(t, err)
-
-	var unmarshalledChain Chain
-	require.NoError(t, unmarshalledChain.UnmarshalBinary(data))
-
-	require.Equal(t, chain, unmarshalledChain)
-}
-
-func generateTestIDs() []ID {
-	return []ID{
-		ID(""),
-		ID(uuid.New().String()),
-		ID("*::/"),
-		ID("avada kedavra"),
-		ID("arn:aws:iam::namespace:group/some_group"),
-		ID("$Object:homomorphicHash"),
-		ID("native:container/ns/9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-	}
-}
-
-func generateTestRules() [][]Rule {
-	result := [][]Rule{
-		nil,
-		{},
-		{},
-	}
-
-	for _, st := range generateTestStatuses() {
-		for _, act := range generateTestActions() {
-			for _, res := range generateTestResources() {
-				for _, cond := range generateTestConditions() {
-					result[2] = append(result[2], Rule{
-						Status:    st,
-						Actions:   act,
-						Resources: res,
-						Condition: cond,
-						Any:       true,
-					})
-					result[2] = append(result[2], Rule{
-						Status:    st,
-						Actions:   act,
-						Resources: res,
-						Condition: cond,
-					})
-				}
-			}
-		}
-	}
-
-	return result
-}
-
-func generateTestStatuses() []Status {
-	return []Status{
-		Allow,
-		NoRuleFound,
-		AccessDenied,
-		QuotaLimitReached,
-	}
-}
-
-func generateTestActions() []Actions {
-	return []Actions{
-		{
-			Inverted: true,
-			Names:    nil,
-		},
-		{
-			Names: nil,
-		},
-		{
-			Inverted: true,
-			Names:    []string{},
-		},
-		{
-			Names: []string{},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.MethodPutObject},
-		},
-		{
-			Names: []string{native.MethodPutObject},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.MethodPutObject, native.MethodDeleteContainer, native.MethodDeleteObject},
-		},
-		{
-			Names: []string{native.MethodPutObject, native.MethodDeleteContainer, native.MethodDeleteObject},
-		},
-	}
-}
-
-func generateTestResources() []Resources {
-	return []Resources{
-		{
-			Inverted: true,
-			Names:    nil,
-		},
-		{
-			Names: nil,
-		},
-		{
-			Inverted: true,
-			Names:    []string{},
-		},
-		{
-			Names: []string{},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.ResourceFormatAllObjects},
-		},
-		{
-			Names: []string{native.ResourceFormatAllObjects},
-		},
-		{
-			Inverted: true,
-			Names: []string{
-				native.ResourceFormatAllObjects,
-				fmt.Sprintf(native.ResourceFormatRootContainer, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-			},
-		},
-		{
-			Names: []string{
-				native.ResourceFormatAllObjects,
-				fmt.Sprintf(native.ResourceFormatRootContainer, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-			},
-		},
-	}
-}
-
-func generateTestConditions() [][]Condition {
-	result := [][]Condition{
-		nil,
-		{},
-		{},
-	}
-
-	for _, ct := range generateTestConditionTypes() {
-		for _, ot := range generateObjectTypes() {
-			result[2] = append(result[2], Condition{
-				Op:    ct,
-				Kind:  ot,
-				Key:   "",
-				Value: "",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:    ct,
-				Kind:  ot,
-				Key:   "key",
-				Value: "",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:    ct,
-				Kind:  ot,
-				Key:   "",
-				Value: "value",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:    ct,
-				Kind:  ot,
-				Key:   "key",
-				Value: "value",
-			})
-		}
-	}
-
-	return result
-}
-
-func generateTestConditionTypes() []ConditionType {
-	return []ConditionType{
-		CondStringEquals,
-		CondStringNotEquals,
-		CondStringEqualsIgnoreCase,
-		CondStringNotEqualsIgnoreCase,
-		CondStringLike,
-		CondStringNotLike,
-		CondStringLessThan,
-		CondStringLessThanEquals,
-		CondStringGreaterThan,
-		CondStringGreaterThanEquals,
-		CondNumericEquals,
-		CondNumericNotEquals,
-		CondNumericLessThan,
-		CondNumericLessThanEquals,
-		CondNumericGreaterThan,
-		CondNumericGreaterThanEquals,
-		CondSliceContains,
-	}
-}
-
-func generateObjectTypes() []ConditionKindType {
-	return []ConditionKindType{
-		KindResource,
-		KindRequest,
-	}
-}
-
-func generateTestMatchTypes() []MatchType {
-	return []MatchType{
-		MatchTypeDenyPriority,
-		MatchTypeFirstMatch,
-	}
-}

pkg/chain/marshal_fuzz.go

@@ -1,13 +0,0 @@
-//go:build gofuzz
-// +build gofuzz
-
-package chain
-
-func DoFuzzChainUnmarshalBinary(data []byte) int {
-	var ch Chain
-	err := ch.UnmarshalBinary(data)
-	if err != nil {
-		return 0
-	}
-	return 1
-}

pkg/chain/marshal_fuzz_test.go

@@ -1,34 +0,0 @@
-//go:build gofuzz
-// +build gofuzz
-
-package chain
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func FuzzUnmarshal(f *testing.F) {
-	for _, id := range generateTestIDs() {
-		for _, rules := range generateTestRules() {
-			for _, matchType := range generateTestMatchTypes() {
-
-				chain := Chain{
-					ID:        id,
-					Rules:     rules,
-					MatchType: matchType,
-				}
-				data, err := chain.MarshalBinary()
-				require.NoError(f, err)
-				f.Add(data)
-			}
-		}
-	}
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		require.NotPanics(t, func() {
-			DoFuzzChainUnmarshalBinary(data)
-		})
-	})
-}

pkg/chain/marshal_json.go

@@ -1,145 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"strconv"
-
-	jlexer "github.com/mailru/easyjson/jlexer"
-	jwriter "github.com/mailru/easyjson/jwriter"
-)
-
-// Run `make generate`` if types added or changed
-
-var matchTypeToJSONValue = []struct {
-	mt  MatchType
-	str string
-}{
-	{MatchTypeDenyPriority, "DenyPriority"},
-	{MatchTypeFirstMatch, "FirstMatch"},
-}
-
-var statusToJSONValue = []struct {
-	s   Status
-	str string
-}{
-	{Allow, "Allow"},
-	{NoRuleFound, "NoRuleFound"},
-	{AccessDenied, "AccessDenied"},
-	{QuotaLimitReached, "QuotaLimitReached"},
-}
-
-var objectTypeToJSONValue = []struct {
-	t   ConditionKindType
-	str string
-}{
-	{KindRequest, "Request"},
-	{KindResource, "Resource"},
-}
-
-func (mt MatchType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range matchTypeToJSONValue {
-		if p.mt == mt {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(mt), 10))
-}
-
-func (mt *MatchType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range matchTypeToJSONValue {
-		if p.str == str {
-			*mt = p.mt
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse match type: %w", err))
-		return
-	}
-	*mt = MatchType(v)
-}
-
-func (st Status) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range statusToJSONValue {
-		if p.s == st {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(st), 10))
-}
-
-func (st *Status) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range statusToJSONValue {
-		if p.str == str {
-			*st = p.s
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse status: %w", err))
-		return
-	}
-	*st = Status(v)
-}
-
-func (ot ConditionKindType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range objectTypeToJSONValue {
-		if p.t == ot {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(ot), 10))
-}
-
-func (ot *ConditionKindType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range objectTypeToJSONValue {
-		if p.str == str {
-			*ot = p.t
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse object type: %w", err))
-		return
-	}
-	*ot = ConditionKindType(v)
-}
-
-func (ct ConditionType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range condToStr {
-		if p.ct == ct {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(ct), 10))
-}
-
-func (ct *ConditionType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range condToStr {
-		if p.str == str {
-			*ct = p.ct
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse condition type: %w", err))
-		return
-	}
-	*ct = ConditionType(v)
-}

pkg/chain/marshal_json_test.go

@@ -1,121 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"os"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/stretchr/testify/require"
-)
-
-func TestID(t *testing.T) {
-	key, err := keys.NewPrivateKeyFromWIF("L5eVx6HcHaFpQpvjQ3fy29uKDZ8rQ34bfMVx4XfZMm52EqafpNMg") // s3-gw key
-	require.NoError(t, err)
-
-	chain1 := &Chain{ID: ID(key.PublicKey().GetScriptHash().BytesBE())}
-	data := chain1.Bytes()
-
-	var chain2 Chain
-	require.NoError(t, chain2.DecodeBytes(data))
-
-	require.Equal(t, chain1.ID, chain2.ID)
-
-	data, err = chain1.MarshalJSON()
-	require.NoError(t, err)
-
-	require.NoError(t, chain2.UnmarshalJSON(data))
-
-	require.Equal(t, chain1.ID, chain2.ID)
-}
-
-func TestMatchTypeJson(t *testing.T) {
-	for _, mt := range []MatchType{MatchTypeDenyPriority, MatchTypeFirstMatch, MatchType(100)} {
-		var chain Chain
-		chain.MatchType = mt
-
-		data, err := chain.MarshalJSON()
-		require.NoError(t, err)
-		if mt == MatchTypeDenyPriority {
-			require.Equal(t, []byte("{\"ID\":null,\"Rules\":null,\"MatchType\":\"DenyPriority\"}"), data)
-		} else if mt == MatchTypeFirstMatch {
-			require.Equal(t, []byte("{\"ID\":null,\"Rules\":null,\"MatchType\":\"FirstMatch\"}"), data)
-		} else {
-			require.Equal(t, []byte(fmt.Sprintf("{\"ID\":null,\"Rules\":null,\"MatchType\":\"%d\"}", mt)), data)
-		}
-
-		var parsed Chain
-		require.NoError(t, parsed.UnmarshalJSON(data))
-		require.Equal(t, chain, parsed)
-
-		require.Error(t, parsed.UnmarshalJSON([]byte("{\"ID\":\"\",\"Rules\":null,\"MatchType\":\"NotValid\"}")))
-	}
-}
-
-func TestJsonEnums(t *testing.T) {
-	chain := Chain{
-		ID:        []byte("2cca5ae7-cee8-428d-b45f-567fb1d03f01"), // will be encoded to base64
-		MatchType: MatchTypeFirstMatch,
-		Rules: []Rule{
-			{
-				Status: AccessDenied,
-				Actions: Actions{
-					Names: []string{native.MethodDeleteObject, native.MethodGetContainer},
-				},
-				Resources: Resources{
-					Names: []string{native.ResourceFormatAllObjects},
-				},
-				Condition: []Condition{
-					{
-						Op:    CondStringEquals,
-						Kind:  KindRequest,
-						Key:   native.PropertyKeyActorRole,
-						Value: native.PropertyValueContainerRoleOthers,
-					},
-				},
-			},
-			{
-				Status: QuotaLimitReached,
-				Actions: Actions{
-					Inverted: true,
-					Names:    []string{native.MethodPutObject},
-				},
-				Resources: Resources{
-					Names: []string{fmt.Sprintf(native.ResourceFormatRootContainerObjects, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J")},
-				},
-				Any: true,
-				Condition: []Condition{
-					{
-						Op:    CondStringNotLike,
-						Kind:  KindResource,
-						Key:   native.PropertyKeyObjectType,
-						Value: "regular",
-					},
-				},
-			},
-			{
-				Status: Status(100),
-				Condition: []Condition{
-					{
-						Op:   ConditionType(255),
-						Kind: ConditionKindType(128),
-					},
-				},
-			},
-		},
-	}
-
-	data, err := chain.MarshalJSON()
-	require.NoError(t, err)
-
-	var parsed Chain
-	require.NoError(t, parsed.UnmarshalJSON(data))
-	require.Equal(t, chain, parsed)
-
-	expected, err := os.ReadFile("./testdata/test_status_json.json")
-	require.NoError(t, err)
-
-	require.NoError(t, parsed.UnmarshalJSON(expected))
-	require.Equal(t, chain, parsed)
-}

pkg/chain/testdata/test_status_json.json

@@ -1,75 +0,0 @@
-{
-    "ID": "MmNjYTVhZTctY2VlOC00MjhkLWI0NWYtNTY3ZmIxZDAzZjAx",
-    "Rules": [
-        {
-            "Status": "AccessDenied",
-            "Actions": {
-                "Inverted": false,
-                "Names": [
-                    "DeleteObject",
-                    "GetContainer"
-                ]
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": [
-                    "native:object/*"
-                ]
-            },
-            "Any": false,
-            "Condition": [
-                {
-                    "Op": "StringEquals",
-                    "Kind": "Request",
-                    "Key": "$Actor:role",
-                    "Value": "others"
-                }
-            ]
-        },
-        {
-            "Status": "QuotaLimitReached",
-            "Actions": {
-                "Inverted": true,
-                "Names": [
-                    "PutObject"
-                ]
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": [
-                    "native:object//9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J/*"
-                ]
-            },
-            "Any": true,
-            "Condition": [
-                {
-                    "Op": "StringNotLike",
-                    "Kind": "Resource",
-                    "Key": "$Object:objectType",
-                    "Value": "regular"
-                }
-            ]
-        },
-        {
-            "Status": "100",
-            "Actions": {
-                "Inverted": false,
-                "Names": null
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": null
-            },
-            "Any": false,
-            "Condition": [
-                {
-                    "Op": "255",
-                    "Kind": "128",
-                    "Key": "",
-                    "Value": ""
-                }
-            ]
-        }
-    ],
-    "MatchType": "FirstMatch"
-}

pkg/engine/chain_router.go

@@ -1,109 +0,0 @@
-package engine
-
-import (
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-)
-
-type defaultChainRouter struct {
-	morph MorphRuleChainStorageReader
-
-	local LocalOverrideStorage
-}
-
-func NewDefaultChainRouter(morph MorphRuleChainStorageReader) ChainRouter {
-	return &defaultChainRouter{
-		morph: morph,
-	}
-}
-
-func NewDefaultChainRouterWithLocalOverrides(morph MorphRuleChainStorageReader, local LocalOverrideStorage) ChainRouter {
-	return &defaultChainRouter{
-		morph: morph,
-		local: local,
-	}
-}
-
-func (dr *defaultChainRouter) IsAllowed(name chain.Name, rt RequestTarget, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	status, ruleFound, err = dr.checkLocal(name, rt, r)
-	if err != nil {
-		return chain.NoRuleFound, false, err
-	} else if ruleFound {
-		// The local overrides have the highest priority and thus
-		// morph rules are not considered if a local one is found.
-		return
-	}
-
-	status, ruleFound, err = dr.checkMorph(name, rt, r)
-	return
-}
-
-func (dr *defaultChainRouter) checkLocal(name chain.Name, rt RequestTarget, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	if dr.local == nil {
-		return
-	}
-
-	var hasAllow bool
-	for _, target := range rt.Targets() {
-		status, ruleFound, err = dr.matchLocalOverrides(name, target, r)
-		if err != nil || ruleFound && status != chain.Allow {
-			return
-		}
-		hasAllow = hasAllow || ruleFound
-	}
-
-	if hasAllow {
-		return chain.Allow, true, nil
-	}
-	return chain.NoRuleFound, false, nil
-}
-
-func (dr *defaultChainRouter) checkMorph(name chain.Name, rt RequestTarget, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	var hasAllow bool
-	for _, target := range rt.Targets() {
-		status, ruleFound, err = dr.matchMorphRuleChains(name, target, r)
-		if err != nil || ruleFound && status != chain.Allow {
-			return
-		}
-		hasAllow = hasAllow || ruleFound
-	}
-
-	if hasAllow {
-		return chain.Allow, true, nil
-	}
-	return chain.NoRuleFound, false, nil
-}
-
-func (dr *defaultChainRouter) matchLocalOverrides(name chain.Name, target Target, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	localOverrides, err := dr.local.ListOverrides(name, target)
-	if err != nil {
-		return
-	}
-	status, ruleFound = dr.getStatusFromChains(localOverrides, r)
-	return
-}
-
-func (dr *defaultChainRouter) matchMorphRuleChains(name chain.Name, target Target, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	namespaceChains, err := dr.morph.ListMorphRuleChains(name, target)
-	if err != nil {
-		return chain.NoRuleFound, false, err
-	}
-	status, ruleFound = dr.getStatusFromChains(namespaceChains, r)
-	return
-}
-
-func (dr *defaultChainRouter) getStatusFromChains(chains []*chain.Chain, r resource.Request) (chain.Status, bool) {
-	var allow bool
-	for _, c := range chains {
-		if status, found := c.Match(r); found {
-			if status != chain.Allow {
-				return status, true
-			}
-			allow = true
-		}
-	}
-	if allow {
-		return chain.Allow, true
-	}
-	return chain.NoRuleFound, false
-}

pkg/engine/errors.go

@@ -1,10 +0,0 @@
-package engine
-
-import "errors"
-
-var (
-	ErrUnknownTarget     = errors.New("unknown target type")
-	ErrChainNotFound     = errors.New("chain not found")
-	ErrChainNameNotFound = errors.New("chain name not found")
-	ErrResourceNotFound  = errors.New("resource not found")
-)

pkg/engine/inmemory/inmemory.go

@@ -1,48 +0,0 @@
-package inmemory
-
-import (
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-)
-
-type inmemory struct {
-	router engine.ChainRouter
-
-	morph engine.MorphRuleChainStorage
-
-	local engine.LocalOverrideStorage
-}
-
-// NewInMemoryLocalOverrides returns new inmemory instance of chain storage with
-// local overrides manager.
-func NewInMemoryLocalOverrides() engine.LocalOverrideEngine {
-	morph := NewInmemoryMorphRuleChainStorage()
-	local := NewInmemoryLocalStorage()
-	return &inmemory{
-		router: engine.NewDefaultChainRouterWithLocalOverrides(morph, local),
-		morph:  morph,
-		local:  local,
-	}
-}
-
-// NewInMemory returns new inmemory instance of chain storage.
-func NewInMemory() engine.Engine {
-	morph := NewInmemoryMorphRuleChainStorage()
-	return &inmemory{
-		router: engine.NewDefaultChainRouter(morph),
-		morph:  morph,
-	}
-}
-
-func (im *inmemory) LocalStorage() engine.LocalOverrideStorage {
-	return im.local
-}
-
-func (im *inmemory) MorphRuleChainStorage() engine.MorphRuleChainStorage {
-	return im.morph
-}
-
-func (im *inmemory) IsAllowed(name chain.Name, rt engine.RequestTarget, r resource.Request) (status chain.Status, ruleFound bool, err error) {
-	return im.router.IsAllowed(name, rt, r)
-}

pkg/engine/inmemory/inmemory_test.go

@@ -1,377 +0,0 @@
-package inmemory
-
-import (
-	"bytes"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	resourcetest "git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource/testutil"
-	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
-	"github.com/stretchr/testify/require"
-)
-
-func TestAddRootOverrides(t *testing.T) {
-	s := NewInMemoryLocalOverrides()
-
-	target := engine.NamespaceTarget("")
-
-	id, err := s.LocalStorage().AddOverride(chain.S3, target, &chain.Chain{
-		Rules: []chain.Rule{{
-			Status:    chain.Allow,
-			Actions:   chain.Actions{Names: []string{"s3:PutObject"}},
-			Resources: chain.Resources{Names: []string{"*"}},
-		}},
-	})
-	require.NoError(t, err)
-
-	res, err := s.LocalStorage().ListOverrides(chain.S3, target)
-	require.NoError(t, err)
-	require.Len(t, res, 1)
-	require.Equal(t, string(id), string(res[0].ID))
-}
-
-func TestInmemory_MultipleTargets(t *testing.T) {
-	const op = "ape::test::op"
-
-	targets := []engine.Target{
-		engine.NamespaceTarget("ns1"),
-		engine.ContainerTarget("cnr1"),
-		engine.GroupTarget("group1"),
-		engine.UserTarget("user1"),
-	}
-	req := resourcetest.NewRequest(op, resourcetest.NewResource("r", nil), nil)
-	target := engine.NewRequestTargetExtended("ns1", "cnr1", "user1", []string{"group1"})
-	for _, tt := range targets {
-		t.Run("morph", func(t *testing.T) {
-			s := NewInMemoryLocalOverrides()
-			s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, tt, &chain.Chain{
-				Rules: []chain.Rule{{
-					Status:  chain.Allow,
-					Actions: chain.Actions{Names: []string{op}},
-				}},
-			})
-
-			status, found, err := s.IsAllowed(chain.Ingress, target, req)
-			require.NoError(t, err)
-			require.True(t, found)
-			require.Equal(t, chain.Allow, status)
-		})
-		t.Run("override", func(t *testing.T) {
-			s := NewInMemoryLocalOverrides()
-			s.LocalStorage().AddOverride(chain.Ingress, tt, &chain.Chain{
-				Rules: []chain.Rule{{
-					Status:  chain.Allow,
-					Actions: chain.Actions{Names: []string{op}},
-				}},
-			})
-
-			status, found, err := s.IsAllowed(chain.Ingress, target, req)
-			require.NoError(t, err)
-			require.True(t, found)
-			require.Equal(t, chain.Allow, status)
-		})
-	}
-}
-
-func TestInmemory(t *testing.T) {
-	const (
-		object     = "native::object::abc/xyz"
-		container  = "native::object::abc/*"
-		namespace  = "Tenant1"
-		namespace2 = "Tenant2"
-		actor1     = "owner1"
-		actor2     = "owner2"
-	)
-
-	s := NewInMemoryLocalOverrides()
-
-	// Object which was put via S3.
-	res := resourcetest.NewResource(object, map[string]string{"FromS3": "true"})
-	// Request initiating from the trusted subnet and actor.
-	reqGood := resourcetest.NewRequest("native::object::put", res, map[string]string{
-		"SourceIP": "10.1.1.12",
-		"Actor":    actor1,
-	})
-
-	status, ok, _ := s.IsAllowed(chain.Ingress, engine.NewRequestTargetWithNamespace(namespace), reqGood)
-	require.Equal(t, chain.NoRuleFound, status)
-	require.False(t, ok)
-
-	s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace), &chain.Chain{
-		Rules: []chain.Rule{
-			{ // Restrict to remove ANY object from the namespace.
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-			{ // Allow to put object only from the trusted subnet AND trusted actor, deny otherwise.
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::put"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-				Any:       true,
-				Condition: []chain.Condition{
-					{
-						Op:    chain.CondStringNotLike,
-						Kind:  chain.KindRequest,
-						Key:   "SourceIP",
-						Value: "10.1.1.*",
-					},
-					{
-						Op:    chain.CondStringNotEquals,
-						Kind:  chain.KindRequest,
-						Key:   "Actor",
-						Value: actor1,
-					},
-				},
-			},
-		},
-	})
-
-	_, it, err := s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace))
-
-	s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
-		Rules: []chain.Rule{
-			{ // Deny all expect "native::object::get" for all objects expect "native::object::abc/xyz".
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-				Resources: chain.Resources{Inverted: true, Names: []string{object}},
-			},
-		},
-	})
-
-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-	s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.ContainerTarget(container), &chain.Chain{
-		Rules: []chain.Rule{
-			{ // Allow to actor2 to get objects from the specific container only if they have `Department=HR` attribute.
-				Status:    chain.Allow,
-				Actions:   chain.Actions{Names: []string{"native::object::get"}},
-				Resources: chain.Resources{Names: []string{"native::object::abc/*"}},
-				Condition: []chain.Condition{
-					{
-						Op:    chain.CondStringEquals,
-						Kind:  chain.KindResource,
-						Key:   "Department",
-						Value: "HR",
-					},
-					{
-						Op:    chain.CondStringEquals,
-						Kind:  chain.KindRequest,
-						Key:   "Actor",
-						Value: actor2,
-					},
-				},
-			},
-		},
-	})
-
-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(container))
-
-	t.Run("bad subnet, namespace deny", func(t *testing.T) {
-		// Request initiating from the untrusted subnet.
-		reqBadIP := resourcetest.NewRequest("native::object::put", res, map[string]string{
-			"SourceIP": "10.122.1.20",
-			"Actor":    actor1,
-		})
-		status, ok, _ := s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqBadIP)
-		require.Equal(t, chain.AccessDenied, status)
-		require.True(t, ok)
-	})
-	t.Run("bad actor, namespace deny", func(t *testing.T) {
-		// Request initiating from the untrusted actor.
-		reqBadActor := resourcetest.NewRequest("native::object::put", res, map[string]string{
-			"SourceIP": "10.1.1.13",
-			"Actor":    actor2,
-		})
-		status, ok, _ := s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqBadActor)
-		require.Equal(t, chain.AccessDenied, status)
-		require.True(t, ok)
-	})
-	t.Run("bad object, container deny", func(t *testing.T) {
-		objGood := resourcetest.NewResource("native::object::abc/id1", map[string]string{"Department": "HR"})
-		objBadAttr := resourcetest.NewResource("native::object::abc/id2", map[string]string{"Department": "Support"})
-
-		status, ok, _ := s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), resourcetest.NewRequest("native::object::get", objGood, map[string]string{
-			"SourceIP": "10.1.1.14",
-			"Actor":    actor2,
-		}))
-		require.Equal(t, chain.Allow, status)
-		require.True(t, ok)
-
-		status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), resourcetest.NewRequest("native::object::get", objBadAttr, map[string]string{
-			"SourceIP": "10.1.1.14",
-			"Actor":    actor2,
-		}))
-		require.Equal(t, chain.NoRuleFound, status)
-		require.False(t, ok)
-	})
-	t.Run("bad operation, namespace deny", func(t *testing.T) {
-		// Request with the forbidden operation.
-		reqBadOperation := resourcetest.NewRequest("native::object::delete", res, map[string]string{
-			"SourceIP": "10.1.1.12",
-			"Actor":    actor1,
-		})
-		status, ok, _ := s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqBadOperation)
-		require.Equal(t, chain.AccessDenied, status)
-		require.True(t, ok)
-	})
-	t.Run("inverted rules", func(t *testing.T) {
-		req := resourcetest.NewRequest("native::object::put", resourcetest.NewResource(object, nil), nil)
-		status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace2, container), req)
-		require.Equal(t, chain.NoRuleFound, status)
-		require.False(t, ok)
-
-		req = resourcetest.NewRequest("native::object::put", resourcetest.NewResource("native::object::cba/def", nil), nil)
-		status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace2, container), req)
-		require.Equal(t, chain.AccessDenied, status)
-		require.True(t, ok)
-
-		req = resourcetest.NewRequest("native::object::get", resourcetest.NewResource("native::object::cba/def", nil), nil)
-		status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace2, container), req)
-		require.Equal(t, chain.NoRuleFound, status)
-		require.False(t, ok)
-	})
-	t.Run("good", func(t *testing.T) {
-		status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
-		require.Equal(t, chain.NoRuleFound, status)
-		require.False(t, ok)
-
-		t.Run("quota on a different container", func(t *testing.T) {
-			s.LocalStorage().AddOverride(chain.Ingress, engine.ContainerTarget(container), &chain.Chain{
-				Rules: []chain.Rule{{
-					Status:    chain.QuotaLimitReached,
-					Actions:   chain.Actions{Names: []string{"native::object::put"}},
-					Resources: chain.Resources{Names: []string{"native::object::cba/*"}},
-				}},
-			})
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
-			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
-			require.Equal(t, chain.NoRuleFound, status)
-			require.False(t, ok)
-		})
-
-		var quotaRuleChainID chain.ID
-		t.Run("quota on the request container", func(t *testing.T) {
-			quotaRuleChainID, _ = s.LocalStorage().AddOverride(chain.Ingress, engine.ContainerTarget(container), &chain.Chain{
-				Rules: []chain.Rule{{
-					Status:    chain.QuotaLimitReached,
-					Actions:   chain.Actions{Names: []string{"native::object::put"}},
-					Resources: chain.Resources{Names: []string{"native::object::abc/*"}},
-				}},
-			})
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
-			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
-			require.Equal(t, chain.QuotaLimitReached, status)
-			require.True(t, ok)
-		})
-		t.Run("removed quota on the request container", func(t *testing.T) {
-			err := s.LocalStorage().RemoveOverride(chain.Ingress, engine.ContainerTarget(container), quotaRuleChainID)
-			require.NoError(t, err)
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
-			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
-			require.Equal(t, chain.NoRuleFound, status)
-			require.False(t, ok)
-		})
-	})
-
-	t.Run("remove all", func(t *testing.T) {
-		s := NewInMemoryLocalOverrides()
-		_, _, err := s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().RemoveMorphRuleChainsByTarget(chain.Ingress, engine.NamespaceTarget(namespace2))
-		require.NoError(t, err)
-		chains, err := s.MorphRuleChainStorage().ListMorphRuleChains(chain.Ingress, engine.NamespaceTarget(namespace2))
-		require.NoError(t, err)
-		require.Equal(t, 0, len(chains))
-		chains, err = s.MorphRuleChainStorage().ListMorphRuleChains(chain.Ingress, engine.NamespaceTarget(namespace))
-		require.NoError(t, err)
-		require.Equal(t, 1, len(chains))
-	})
-}
-
-func itemStacksEqual(t *testing.T, got []stackitem.Item, expected []stackitem.Item) {
-next:
-	for _, exp := range expected {
-		expBytes, err := exp.TryBytes()
-		require.NoError(t, err)
-		for _, v := range got {
-			vBytes, err := v.TryBytes()
-			require.NoError(t, err)
-			if bytes.Equal(vBytes, expBytes) {
-				continue next
-			}
-		}
-		t.Fatalf("not found %s", exp)
-	}
-}
-
-func toStackItems(names ...string) []stackitem.Item {
-	var items []stackitem.Item
-	for _, name := range names {
-		items = append(items, stackitem.NewByteArray([]byte(name)))
-	}
-	return items
-}

pkg/engine/inmemory/local_storage.go

@@ -1,180 +0,0 @@
-package inmemory
-
-import (
-	"bytes"
-	"fmt"
-	"math/rand"
-	"strings"
-	"sync"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/util"
-)
-
-type targetToChain map[engine.Target][]*chain.Chain
-
-type inmemoryLocalStorage struct {
-	usedChainID          map[string]struct{}
-	nameToResourceChains map[chain.Name]targetToChain
-	guard                *sync.RWMutex
-}
-
-func NewInmemoryLocalStorage() engine.LocalOverrideStorage {
-	return &inmemoryLocalStorage{
-		usedChainID:          map[string]struct{}{},
-		nameToResourceChains: make(map[chain.Name]targetToChain),
-		guard:                &sync.RWMutex{},
-	}
-}
-
-func (s *inmemoryLocalStorage) generateChainID(name chain.Name, target engine.Target) chain.ID {
-	var id chain.ID
-	for {
-		suffix := rand.Uint32() % 100
-		sid := fmt.Sprintf("%s:%s/%d", name, target.Name, suffix)
-		sid = strings.ReplaceAll(sid, "*", "")
-		sid = strings.ReplaceAll(sid, "/", ":")
-		sid = strings.ReplaceAll(sid, "::", ":")
-		_, ok := s.usedChainID[sid]
-		if ok {
-			continue
-		}
-		s.usedChainID[sid] = struct{}{}
-
-		id = chain.ID(sid)
-		break
-	}
-	return id
-}
-
-func (s *inmemoryLocalStorage) AddOverride(name chain.Name, target engine.Target, c *chain.Chain) (chain.ID, error) {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
-	if target.Name == "" {
-		target.Name = "root"
-	}
-
-	// AddOverride assigns generated chain ID if it has not been assigned.
-	if len(c.ID) == 0 {
-		c.ID = s.generateChainID(name, target)
-	}
-	if s.nameToResourceChains[name] == nil {
-		s.nameToResourceChains[name] = make(targetToChain)
-	}
-	rc := s.nameToResourceChains[name]
-	for i := range rc[target] {
-		if bytes.Equal(rc[target][i].ID, c.ID) {
-			rc[target][i] = c
-			return c.ID, nil
-		}
-	}
-	rc[target] = append(rc[target], c)
-	return c.ID, nil
-}
-
-func (s *inmemoryLocalStorage) GetOverride(name chain.Name, target engine.Target, chainID chain.ID) (*chain.Chain, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-
-	if _, ok := s.nameToResourceChains[name]; !ok {
-		return nil, engine.ErrChainNameNotFound
-	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
-	chains, ok := s.nameToResourceChains[name][target]
-	if !ok {
-		return nil, engine.ErrResourceNotFound
-	}
-	for _, c := range chains {
-		if bytes.Equal(c.ID, chainID) {
-			return c, nil
-		}
-	}
-	return nil, engine.ErrChainNotFound
-}
-
-func (s *inmemoryLocalStorage) RemoveOverride(name chain.Name, target engine.Target, chainID chain.ID) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
-	if _, ok := s.nameToResourceChains[name]; !ok {
-		return engine.ErrChainNameNotFound
-	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
-	chains, ok := s.nameToResourceChains[name][target]
-	if !ok {
-		return engine.ErrResourceNotFound
-	}
-	for i, c := range chains {
-		if bytes.Equal(c.ID, chainID) {
-			s.nameToResourceChains[name][target] = append(chains[:i], chains[i+1:]...)
-			return nil
-		}
-	}
-	return engine.ErrChainNotFound
-}
-
-func (s *inmemoryLocalStorage) RemoveOverridesByTarget(name chain.Name, target engine.Target) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
-	if _, ok := s.nameToResourceChains[name]; !ok {
-		return engine.ErrChainNameNotFound
-	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
-	_, ok := s.nameToResourceChains[name][target]
-	if ok {
-		delete(s.nameToResourceChains[name], target)
-		return nil
-	}
-	return engine.ErrResourceNotFound
-}
-
-func (s *inmemoryLocalStorage) ListOverrides(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-
-	rcs, ok := s.nameToResourceChains[name]
-	if !ok {
-		return []*chain.Chain{}, nil
-	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
-	for t, chains := range rcs {
-		if t.Type != target.Type {
-			continue
-		}
-		if !util.GlobMatch(target.Name, t.Name) {
-			continue
-		}
-		return chains, nil
-	}
-	return []*chain.Chain{}, nil
-}
-
-func (s *inmemoryLocalStorage) DropAllOverrides(name chain.Name) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
-	s.nameToResourceChains[name] = make(targetToChain)
-	return nil
-}
-
-func (s *inmemoryLocalStorage) ListOverrideDefinedTargets(name chain.Name) ([]engine.Target, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-	ttc := s.nameToResourceChains[name]
-	var keys []engine.Target
-	for k := range ttc {
-		keys = append(keys, k)
-	}
-	return keys, nil
-}

pkg/engine/inmemory/local_storage_test.go

@@ -1,268 +0,0 @@
-package inmemory
-
-import (
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"github.com/stretchr/testify/require"
-)
-
-const (
-	container       = "native:::object/ExYw/*"
-	chainID         = "ingress:ExYw"
-	nonExistChainId = "ingress:LxGyWyL"
-)
-
-var resrc = engine.ContainerTarget(container)
-
-func testInmemLocalStorage() *inmemoryLocalStorage {
-	return NewInmemoryLocalStorage().(*inmemoryLocalStorage)
-}
-
-func TestAddOverride(t *testing.T) {
-	inmem := testInmemLocalStorage()
-
-	inmem.AddOverride(chain.Ingress, resrc, &chain.Chain{
-		Rules: []chain.Rule{
-			{
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-		},
-	})
-
-	ingressChains, ok := inmem.nameToResourceChains[chain.Ingress]
-	require.True(t, ok)
-	resourceChains, ok := ingressChains[resrc]
-	require.True(t, ok)
-	require.Len(t, resourceChains, 1)
-	require.Len(t, resourceChains[0].Rules, 1)
-
-	inmem.AddOverride(chain.Ingress, resrc, &chain.Chain{
-		Rules: []chain.Rule{
-			{
-				Status:    chain.QuotaLimitReached,
-				Actions:   chain.Actions{Names: []string{"native::object::put"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-			{
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::get"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-		},
-	})
-
-	ingressChains, ok = inmem.nameToResourceChains[chain.Ingress]
-	require.True(t, ok)
-	resourceChains, ok = ingressChains[resrc]
-	require.True(t, ok)
-	require.Len(t, resourceChains, 2)
-	require.Len(t, resourceChains[1].Rules, 2)
-}
-
-func TestRemoveOverride(t *testing.T) {
-	t.Run("remove from empty storage", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		err := inmem.RemoveOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.ErrorIs(t, err, engine.ErrChainNameNotFound)
-	})
-
-	t.Run("remove not added chain id", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{ // Restrict to remove ANY object from the namespace.
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-
-		err := inmem.RemoveOverride(chain.Ingress, resrc, chain.ID(nonExistChainId))
-		require.ErrorIs(t, err, engine.ErrChainNotFound)
-	})
-
-	t.Run("remove existing chain id", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{ // Restrict to remove ANY object from the namespace.
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-
-		err := inmem.RemoveOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.NoError(t, err)
-
-		ingressChains, ok := inmem.nameToResourceChains[chain.Ingress]
-		require.True(t, ok)
-		require.Len(t, ingressChains, 1)
-		resourceChains, ok := ingressChains[resrc]
-		require.True(t, ok)
-		require.Len(t, resourceChains, 0)
-	})
-
-	t.Run("remove by target", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		t0 := engine.ContainerTarget("name0")
-		t1 := engine.ContainerTarget("name1")
-		inmem.AddOverride(chain.Ingress, t0, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-		inmem.AddOverride(chain.Ingress, t0, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-		inmem.AddOverride(chain.Ingress, t1, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-
-		err := inmem.RemoveOverridesByTarget(chain.Ingress, t0)
-		require.NoError(t, err)
-
-		ingressChains, ok := inmem.nameToResourceChains[chain.Ingress]
-		require.True(t, ok)
-		require.Len(t, ingressChains, 1)
-		resourceChains, ok := ingressChains[t1]
-		require.True(t, ok)
-		require.Len(t, resourceChains, 1)
-	})
-}
-
-func TestGetOverride(t *testing.T) {
-	addChain := &chain.Chain{
-		ID: chain.ID(chainID),
-		Rules: []chain.Rule{
-			{ // Restrict to remove ANY object from the namespace.
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-		},
-	}
-
-	t.Run("get from empty storage", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		_, err := inmem.GetOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.ErrorIs(t, err, engine.ErrChainNameNotFound)
-	})
-
-	t.Run("get not added chain id", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, addChain)
-
-		const nonExistingChainID = "ingress:LxGyWyL"
-
-		_, err := inmem.GetOverride(chain.Ingress, resrc, chain.ID(nonExistingChainID))
-		require.ErrorIs(t, err, engine.ErrChainNotFound)
-	})
-
-	t.Run("get existing chain id", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, addChain)
-
-		c, err := inmem.GetOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.NoError(t, err)
-		require.EqualValues(t, *addChain, *c)
-	})
-
-	t.Run("get removed chain id", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, addChain)
-
-		err := inmem.RemoveOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.NoError(t, err)
-
-		_, err = inmem.GetOverride(chain.Ingress, resrc, chain.ID(chainID))
-		require.ErrorIs(t, err, engine.ErrChainNotFound)
-	})
-}
-
-func TestListOverrides(t *testing.T) {
-	addChain := &chain.Chain{
-		ID: chain.ID(chainID),
-		Rules: []chain.Rule{
-			{ // Restrict to remove ANY object from the namespace.
-				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-				Resources: chain.Resources{Names: []string{"native::object::*"}},
-			},
-		},
-	}
-
-	t.Run("list empty storage", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		l, _ := inmem.ListOverrides(chain.Ingress, resrc)
-		require.Len(t, l, 0)
-	})
-
-	t.Run("list with one added resource", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, addChain)
-		l, _ := inmem.ListOverrides(chain.Ingress, resrc)
-		require.Len(t, l, 1)
-		targets, err := inmem.ListOverrideDefinedTargets(chain.Ingress)
-		require.NoError(t, err)
-		require.Equal(t, []engine.Target{resrc}, targets)
-	})
-
-	t.Run("list after drop", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		inmem.AddOverride(chain.Ingress, resrc, addChain)
-		l, _ := inmem.ListOverrides(chain.Ingress, resrc)
-		require.Len(t, l, 1)
-
-		_ = inmem.DropAllOverrides(chain.Ingress)
-		l, _ = inmem.ListOverrides(chain.Ingress, resrc)
-		require.Len(t, l, 0)
-	})
-}
-
-func TestGenerateID(t *testing.T) {
-	inmem := testInmemLocalStorage()
-	ids := make([]chain.ID, 0, 100)
-	for i := 0; i < 100; i++ {
-		ids = append(ids, inmem.generateChainID(chain.Ingress, resrc))
-	}
-	require.False(t, hasDuplicates(ids))
-}
-
-func hasDuplicates(ids []chain.ID) bool {
-	seen := make(map[string]bool)
-	for _, id := range ids {
-		if seen[string(id)] {
-			return true
-		}
-		seen[string(id)] = true
-	}
-	return false
-}

pkg/engine/inmemory/morph_storage.go

@@ -1,112 +0,0 @@
-package inmemory
-
-import (
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
-)
-
-type inmemoryMorphRuleChainStorage struct {
-	storage engine.LocalOverrideStorage
-}
-
-func NewInmemoryMorphRuleChainStorage() engine.MorphRuleChainStorage {
-	return &inmemoryMorphRuleChainStorage{
-		storage: NewInmemoryLocalStorage(),
-	}
-}
-
-func (s *inmemoryMorphRuleChainStorage) AddMorphRuleChain(name chain.Name, target engine.Target, c *chain.Chain) (_ util.Uint256, _ uint32, err error) {
-	switch target.Type {
-	case engine.Namespace, engine.Container, engine.User, engine.Group:
-		_, err = s.storage.AddOverride(name, target, c)
-	default:
-		err = engine.ErrUnknownTarget
-	}
-	return
-}
-
-func (s *inmemoryMorphRuleChainStorage) RemoveMorphRuleChain(name chain.Name, target engine.Target, chainID chain.ID) (_ util.Uint256, _ uint32, err error) {
-	switch target.Type {
-	case engine.Namespace, engine.Container, engine.User, engine.Group:
-		err = s.storage.RemoveOverride(name, target, chainID)
-	default:
-		err = engine.ErrUnknownTarget
-	}
-	return
-}
-
-func (s *inmemoryMorphRuleChainStorage) RemoveMorphRuleChainsByTarget(name chain.Name, target engine.Target) (_ util.Uint256, _ uint32, err error) {
-	switch target.Type {
-	case engine.Namespace, engine.Container, engine.User, engine.Group:
-		err = s.storage.RemoveOverridesByTarget(name, target)
-	default:
-		err = engine.ErrUnknownTarget
-	}
-	return
-}
-
-func (s *inmemoryMorphRuleChainStorage) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	switch target.Type {
-	case engine.Namespace, engine.Container, engine.User, engine.Group:
-		return s.storage.ListOverrides(name, target)
-	default:
-	}
-	return nil, engine.ErrUnknownTarget
-}
-
-func (s *inmemoryMorphRuleChainStorage) GetAdmin() (util.Uint160, error) {
-	panic("not implemented")
-}
-
-func (s *inmemoryMorphRuleChainStorage) SetAdmin(_ util.Uint160) (util.Uint256, uint32, error) {
-	panic("not implemented")
-}
-
-func (s *inmemoryMorphRuleChainStorage) ListTargetsIterator(targetType engine.TargetType) (uuid uuid.UUID, it result.Iterator, err error) {
-	it.Values = make([]stackitem.Item, 0)
-
-	switch targetType {
-	case engine.Namespace:
-		// Listing targets may look bizarre, because inmemory rule chain storage use inmemory local overrides where
-		// targets are listed by chain names.
-		var targets []engine.Target
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.Ingress)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.S3)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-	case engine.Container:
-		var targets []engine.Target
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.Ingress)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.S3)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-	default:
-	}
-	return
-}

pkg/engine/interface.go

@@ -1,185 +0,0 @@
-package engine
-
-import (
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-type ChainRouter interface {
-	// IsAllowed returns status for the operation after all checks.
-	// The second return value signifies whether a matching rule was found.
-	IsAllowed(name chain.Name, reqTarget RequestTarget, r resource.Request) (status chain.Status, found bool, err error)
-}
-
-// LocalOverrideStorage is the interface to manage local overrides defined
-// for a node. Local overrides have a higher priority than chains got from morph storage.
-type LocalOverrideStorage interface {
-	AddOverride(name chain.Name, target Target, c *chain.Chain) (chain.ID, error)
-
-	GetOverride(name chain.Name, target Target, chainID chain.ID) (*chain.Chain, error)
-
-	RemoveOverride(name chain.Name, target Target, chainID chain.ID) error
-
-	RemoveOverridesByTarget(name chain.Name, target Target) error
-
-	ListOverrides(name chain.Name, target Target) ([]*chain.Chain, error)
-
-	DropAllOverrides(name chain.Name) error
-
-	ListOverrideDefinedTargets(name chain.Name) ([]Target, error)
-}
-
-type TargetType rune
-
-const (
-	Namespace TargetType = 'n'
-	Container TargetType = 'c'
-	User      TargetType = 'u'
-	Group     TargetType = 'g'
-)
-
-type Target struct {
-	Type TargetType
-	Name string
-}
-
-// RequestTarget combines several targets on which the request is performed.
-type RequestTarget struct {
-	Namespace *Target
-	Container *Target
-	User      *Target
-	Groups    []Target
-}
-
-func NewRequestTargetWithNamespace(namespace string) RequestTarget {
-	nt := NamespaceTarget(namespace)
-	return RequestTarget{
-		Namespace: &nt,
-	}
-}
-
-func NewRequestTargetWithContainer(container string) RequestTarget {
-	ct := ContainerTarget(container)
-	return RequestTarget{
-		Container: &ct,
-	}
-}
-
-func NewRequestTarget(namespace, container string) RequestTarget {
-	nt := NamespaceTarget(namespace)
-	ct := ContainerTarget(container)
-	return RequestTarget{
-		Namespace: &nt,
-		Container: &ct,
-	}
-}
-
-func NewRequestTargetExtended(namespace, container, user string, groups []string) RequestTarget {
-	nt := NamespaceTarget(namespace)
-	ct := ContainerTarget(container)
-	u := UserTarget(user)
-	rt := RequestTarget{
-		Namespace: &nt,
-		Container: &ct,
-		User:      &u,
-	}
-	if len(groups) != 0 {
-		rt.Groups = make([]Target, len(groups))
-		for i := range groups {
-			rt.Groups[i] = GroupTarget(groups[i])
-		}
-	}
-	return rt
-}
-
-func (rt *RequestTarget) Targets() (targets []Target) {
-	if rt.Namespace != nil {
-		targets = append(targets, *rt.Namespace)
-	}
-	if rt.Container != nil {
-		targets = append(targets, *rt.Container)
-	}
-	if rt.User != nil {
-		targets = append(targets, *rt.User)
-	}
-	if len(rt.Groups) != 0 {
-		targets = append(targets, rt.Groups...)
-	}
-	return
-}
-
-func NamespaceTarget(namespace string) Target {
-	return Target{
-		Type: Namespace,
-		Name: namespace,
-	}
-}
-
-func ContainerTarget(container string) Target {
-	return Target{
-		Type: Container,
-		Name: container,
-	}
-}
-
-func UserTarget(user string) Target {
-	return Target{
-		Type: User,
-		Name: user,
-	}
-}
-
-func GroupTarget(group string) Target {
-	return Target{
-		Type: Group,
-		Name: group,
-	}
-}
-
-// MorphRuleChainStorageReader is the interface that provides read-only methods to receive
-// data like chains, target or admin from a chain storage.
-type MorphRuleChainStorageReader interface {
-	// ListMorphRuleChains just lists deserialized chains.
-	ListMorphRuleChains(name chain.Name, target Target) ([]*chain.Chain, error)
-
-	GetAdmin() (util.Uint160, error)
-
-	// ListTargetsIterator provides an iterator to list targets for which rules are defined.
-	ListTargetsIterator(targetType TargetType) (uuid.UUID, result.Iterator, error)
-}
-
-// MorphRuleChainStorage is the interface to read and manage data within a chain storage.
-// Basically, this implies that the storage manages rules stored in policy contract.
-type MorphRuleChainStorage interface {
-	MorphRuleChainStorageReader
-
-	// AddMorphRuleChain adds a chain rule to the policy contract and returns transaction hash, VUB and error.
-	AddMorphRuleChain(name chain.Name, target Target, c *chain.Chain) (util.Uint256, uint32, error)
-
-	// RemoveMorphRuleChain removes a chain rule to the policy contract and returns transaction hash, VUB and error.
-	RemoveMorphRuleChain(name chain.Name, target Target, chainID chain.ID) (util.Uint256, uint32, error)
-
-	// RemoveMorphRuleChainsByTarget removes all chains by target and returns transaction hash, VUB and error.
-	RemoveMorphRuleChainsByTarget(name chain.Name, target Target) (util.Uint256, uint32, error)
-
-	SetAdmin(addr util.Uint160) (util.Uint256, uint32, error)
-}
-
-// Engine is the interface that provides methods to check request permissions checking
-// chain rules from morph client - this implies using the policy contract.
-type Engine interface {
-	ChainRouter
-
-	MorphRuleChainStorage() MorphRuleChainStorage
-}
-
-// LocalOverrideEngine is extended Engine that also provides methods to manage a local
-// chain rule storage. Local overrides must have the highest priority during request checking.
-type LocalOverrideEngine interface {
-	Engine
-
-	LocalStorage() LocalOverrideStorage
-}

pkg/marshal/marshal.go

@@ -1,267 +0,0 @@
-package marshal
-
-import (
-	"encoding/binary"
-	"fmt"
-)
-
-const (
-	Version byte = 0 // increase if breaking change
-
-	ByteSize  int = 1
-	UInt8Size int = ByteSize
-	BoolSize  int = ByteSize
-
-	nilSlice     int64 = -1
-	nilSliceSize int   = 1
-
-	byteTrue  uint8 = 1
-	byteFalse uint8 = 0
-
-	// maxSliceLen taken from https://github.com/neo-project/neo/blob/38218bbee5bbe8b33cd8f9453465a19381c9a547/src/Neo/IO/Helper.cs#L77
-	maxSliceLen = 0x1000000
-)
-
-type MarshallerError struct {
-	errMsg string
-	offset int
-}
-
-func (e *MarshallerError) Error() string {
-	if e == nil {
-		return ""
-	}
-	if e.offset < 0 {
-		return e.errMsg
-	}
-	return fmt.Sprintf("%s (offset: %d)", e.errMsg, e.offset)
-}
-
-func errBufTooSmall(t string, marshal bool, offset int) error {
-	action := "unmarshal"
-	if marshal {
-		action = "marshal"
-	}
-	return &MarshallerError{
-		errMsg: fmt.Sprintf("not enough bytes left to %s value of type '%s'", action, t),
-		offset: offset,
-	}
-}
-
-func VerifyMarshal(buf []byte, lastOffset int) error {
-	if len(buf) != lastOffset {
-		return &MarshallerError{
-			errMsg: "actual data size differs from expected",
-			offset: -1,
-		}
-	}
-	return nil
-}
-
-func VerifyUnmarshal(buf []byte, lastOffset int) error {
-	if len(buf) != lastOffset {
-		return &MarshallerError{
-			errMsg: "unmarshalled bytes left",
-		}
-	}
-	return nil
-}
-
-func SliceSize[T any](slice []T, sizeOf func(T) int) int {
-	if slice == nil {
-		return nilSliceSize
-	}
-	s := Int64Size(int64(len(slice)))
-	for _, v := range slice {
-		s += sizeOf(v)
-	}
-	return s
-}
-
-func SliceMarshal[T any](buf []byte, offset int, slice []T, marshalT func([]byte, int, T) (int, error)) (int, error) {
-	if slice == nil {
-		return Int64Marshal(buf, offset, nilSlice)
-	}
-	if len(slice) > maxSliceLen {
-		return 0, &MarshallerError{
-			errMsg: fmt.Sprintf("slice size if too big: '%d'", len(slice)),
-			offset: offset,
-		}
-	}
-	offset, err := Int64Marshal(buf, offset, int64(len(slice)))
-	if err != nil {
-		return 0, err
-	}
-	for _, v := range slice {
-		offset, err = marshalT(buf, offset, v)
-		if err != nil {
-			return 0, err
-		}
-	}
-	return offset, nil
-}
-
-func SliceUnmarshal[T any](buf []byte, offset int, unmarshalT func(buf []byte, offset int) (T, int, error)) ([]T, int, error) {
-	size, offset, err := Int64Unmarshal(buf, offset)
-	if err != nil {
-		return nil, 0, err
-	}
-	if size == nilSlice {
-		return nil, offset, nil
-	}
-	if size > maxSliceLen {
-		return nil, 0, &MarshallerError{
-			errMsg: fmt.Sprintf("slice size if too big: '%d'", size),
-			offset: offset,
-		}
-	}
-	if size < 0 {
-		return nil, 0, &MarshallerError{
-			errMsg: fmt.Sprintf("invalid slice size: '%d'", size),
-			offset: offset,
-		}
-	}
-	result := make([]T, size)
-	for idx := 0; idx < len(result); idx++ {
-		result[idx], offset, err = unmarshalT(buf, offset)
-		if err != nil {
-			return nil, 0, err
-		}
-	}
-	return result, offset, nil
-}
-
-func Int64Size(v int64) int {
-	// https://cs.opensource.google/go/go/+/master:src/encoding/binary/varint.go;l=92;drc=dac9b9ddbd5160c5f4552410f5f8281bd5eed38c
-	// and
-	// https://cs.opensource.google/go/go/+/master:src/encoding/binary/varint.go;l=41;drc=dac9b9ddbd5160c5f4552410f5f8281bd5eed38c
-	ux := uint64(v) << 1
-	if v < 0 {
-		ux = ^ux
-	}
-	s := 0
-	for ux >= 0x80 {
-		s++
-		ux >>= 7
-	}
-	return s + 1
-}
-
-func Int64Marshal(buf []byte, offset int, v int64) (int, error) {
-	if len(buf)-offset < Int64Size(v) {
-		return 0, errBufTooSmall("int64", true, offset)
-	}
-	return offset + binary.PutVarint(buf[offset:], v), nil
-}
-
-func Int64Unmarshal(buf []byte, offset int) (int64, int, error) {
-	v, read := binary.Varint(buf[offset:])
-	if read == 0 {
-		return 0, 0, errBufTooSmall("int64", false, offset)
-	}
-	if read < 0 {
-		return 0, 0, &MarshallerError{
-			errMsg: "int64 unmarshal overflow",
-			offset: offset,
-		}
-	}
-	return v, offset + read, nil
-}
-
-func StringSize(s string) int {
-	return Int64Size(int64(len(s))) + len(s)
-}
-
-func StringMarshal(buf []byte, offset int, s string) (int, error) {
-	if len(s) > maxSliceLen {
-		return 0, &MarshallerError{
-			errMsg: fmt.Sprintf("string is too long: '%d'", len(s)),
-			offset: offset,
-		}
-	}
-	if len(buf)-offset < Int64Size(int64(len(s)))+len(s) {
-		return 0, errBufTooSmall("string", true, offset)
-	}
-
-	offset, err := Int64Marshal(buf, offset, int64(len(s)))
-	if err != nil {
-		return 0, err
-	}
-	if s == "" {
-		return offset, nil
-	}
-	return offset + copy(buf[offset:], s), nil
-}
-
-func StringUnmarshal(buf []byte, offset int) (string, int, error) {
-	size, offset, err := Int64Unmarshal(buf, offset)
-	if err != nil {
-		return "", 0, err
-	}
-	if size == 0 {
-		return "", offset, nil
-	}
-	if size > maxSliceLen {
-		return "", 0, &MarshallerError{
-			errMsg: fmt.Sprintf("string is too long: '%d'", size),
-			offset: offset,
-		}
-	}
-	if size < 0 {
-		return "", 0, &MarshallerError{
-			errMsg: fmt.Sprintf("invalid string size: '%d'", size),
-			offset: offset,
-		}
-	}
-	if len(buf)-offset < int(size) {
-		return "", 0, errBufTooSmall("string", false, offset)
-	}
-	return string(buf[offset : offset+int(size)]), offset + int(size), nil
-}
-
-func UInt8Marshal(buf []byte, offset int, value uint8) (int, error) {
-	if len(buf)-offset < 1 {
-		return 0, errBufTooSmall("uint8", true, offset)
-	}
-	buf[offset] = value
-	return offset + 1, nil
-}
-
-func UInt8Unmarshal(buf []byte, offset int) (uint8, int, error) {
-	if len(buf)-offset < 1 {
-		return 0, 0, errBufTooSmall("uint8", false, offset)
-	}
-	return buf[offset], offset + 1, nil
-}
-
-func ByteMarshal(buf []byte, offset int, value byte) (int, error) {
-	return UInt8Marshal(buf, offset, value)
-}
-
-func ByteUnmarshal(buf []byte, offset int) (byte, int, error) {
-	return UInt8Unmarshal(buf, offset)
-}
-
-func BoolMarshal(buf []byte, offset int, value bool) (int, error) {
-	if value {
-		return UInt8Marshal(buf, offset, byteTrue)
-	}
-	return UInt8Marshal(buf, offset, byteFalse)
-}
-
-func BoolUnmarshal(buf []byte, offset int) (bool, int, error) {
-	v, offset, err := UInt8Unmarshal(buf, offset)
-	if err != nil {
-		return false, 0, err
-	}
-	if v == byteTrue {
-		return true, offset, nil
-	}
-	if v == byteFalse {
-		return false, offset, nil
-	}
-	return false, 0, &MarshallerError{
-		errMsg: fmt.Sprintf("invalid marshalled value for bool: %d", v),
-		offset: offset - BoolSize,
-	}
-}

pkg/marshal/marshal_test.go

@@ -1,313 +0,0 @@
-package marshal
-
-import (
-	"encoding/binary"
-	"math"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestMarshalling(t *testing.T) {
-	t.Parallel()
-	t.Run("slice", func(t *testing.T) {
-		t.Parallel()
-		t.Run("nil slice", func(t *testing.T) {
-			t.Parallel()
-
-			var int64s []int64
-			expectedSize := SliceSize(int64s, Int64Size)
-			require.Equal(t, 1, expectedSize)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Nil(t, result)
-		})
-
-		t.Run("empty slice", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 0)
-			expectedSize := SliceSize(int64s, Int64Size)
-			require.Equal(t, 1, expectedSize)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.NotNil(t, result)
-			require.Len(t, result, 0)
-		})
-
-		t.Run("non empty slice", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, int64s, result)
-		})
-
-		t.Run("corrupted slice size", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			for i := 0; i < binary.MaxVarintLen64; i++ {
-				buf[i] = 129
-			}
-
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-
-			for i := 0; i < binary.MaxVarintLen64; i++ {
-				buf[i] = 127
-			}
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("corrupted slice item", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			for i := 2; i < binary.MaxVarintLen64+2; i++ {
-				buf[i] = 129
-			}
-
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("small buffer", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			buf := make([]byte, 1)
-			_, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-
-			buf = make([]byte, 10)
-			_, err = SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("int64", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-
-			require.Equal(t, 1, Int64Size(0))
-			require.Equal(t, binary.MaxVarintLen64, Int64Size(math.MaxInt64))
-			require.Equal(t, binary.MaxVarintLen64, Int64Size(math.MinInt64))
-
-			for _, v := range []int64{0, math.MinInt64, math.MaxInt64} {
-				size := Int64Size(v)
-				buf := make([]byte, size)
-				offset, err := Int64Marshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				uv, offset, err := Int64Unmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, uv)
-			}
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-
-			var mErr *MarshallerError
-
-			_, err := Int64Marshal([]byte{}, 0, 100500)
-			require.ErrorAs(t, err, &mErr)
-
-			_, _, err = Int64Unmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("overflow", func(t *testing.T) {
-			t.Parallel()
-
-			var mErr *MarshallerError
-
-			var v int64 = math.MaxInt64
-			buf := make([]byte, Int64Size(v))
-			_, err := Int64Marshal(buf, 0, v)
-			require.NoError(t, err)
-
-			buf[9] = 2
-
-			_, _, err = Int64Unmarshal(buf, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("string", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-			for _, v := range []string{
-				"", "arn:aws:iam::namespace:group/some_group", "$Object:homomorphicHash",
-				"native:container/ns/9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J",
-			} {
-				size := StringSize(v)
-				buf := make([]byte, size)
-				offset, err := StringMarshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				uv, offset, err := StringUnmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, uv)
-			}
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-
-			str := "avada kedavra"
-
-			var mErr *MarshallerError
-			_, err := StringMarshal(nil, 0, str)
-			require.ErrorAs(t, err, &mErr)
-
-			_, _, err = StringUnmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-
-			buf := make([]byte, StringSize(str))
-			offset, err := StringMarshal(buf, 0, str)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-			buf = buf[:len(buf)-1]
-			_, _, err = StringUnmarshal(buf, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("uint8, byte", func(t *testing.T) {
-		t.Parallel()
-
-		for _, v := range []byte{0, 8, 16, 32, 64, 128, 255} {
-			buf := make([]byte, ByteSize)
-			offset, err := ByteMarshal(buf, 0, v)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			ub, offset, err := ByteUnmarshal(buf, 0)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, v, ub)
-
-			buf = make([]byte, UInt8Size)
-			offset, err = UInt8Marshal(buf, 0, v)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			uu, offset, err := UInt8Unmarshal(buf, 0)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, v, uu)
-		}
-	})
-
-	t.Run("bool", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-			for _, v := range []bool{false, true} {
-				buf := make([]byte, BoolSize)
-				offset, err := BoolMarshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				ub, offset, err := BoolUnmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, ub)
-			}
-		})
-
-		t.Run("invalid value", func(t *testing.T) {
-			t.Parallel()
-			buf := make([]byte, BoolSize)
-			offset, err := BoolMarshal(buf, 0, true)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			buf[0] = 2
-
-			_, _, err = BoolUnmarshal(buf, 0)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-			var mErr *MarshallerError
-
-			_, err := BoolMarshal(nil, 0, true)
-			require.ErrorAs(t, err, &mErr)
-
-			buf := append(make([]byte, BoolSize), 100)
-			offset, err := BoolMarshal(buf, 0, true)
-			require.NoError(t, err)
-			require.ErrorAs(t, VerifyMarshal(buf, offset), &mErr)
-
-			v, offset, err := BoolUnmarshal(buf, 0)
-			require.NoError(t, err)
-			require.True(t, v)
-			require.ErrorAs(t, VerifyUnmarshal(buf, offset), &mErr)
-
-			_, _, err = BoolUnmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-}

pkg/morph/policy/policy_contract_storage.go

@@ -1,248 +0,0 @@
-package policy
-
-import (
-	"errors"
-	"fmt"
-	"math/big"
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-contract/commonclient"
-	"git.frostfs.info/TrueCloudLab/frostfs-contract/policy"
-	client "git.frostfs.info/TrueCloudLab/frostfs-contract/rpcclient/policy"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
-	"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
-	neoinvoker "github.com/nspcc-dev/neo-go/pkg/rpcclient/invoker"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
-	"github.com/nspcc-dev/neo-go/pkg/wallet"
-)
-
-var (
-	ErrEmptyChainID = errors.New("chain id is not set")
-
-	ErrEngineTargetTypeUnsupported = errors.New("this target type is not supported yet")
-)
-
-// ContractStorage is the interface to manage chain rules within Policy contract.
-type ContractStorage struct {
-	hash util.Uint160
-
-	actor ContractStorageActor
-
-	contractInterface *client.Contract
-}
-
-var _ engine.MorphRuleChainStorage = (*ContractStorage)(nil)
-
-// ContractStorageReader is the interface to read data from Policy contract.
-type ContractStorageReader struct {
-	hash util.Uint160
-
-	invoker ContractStorageInvoker
-
-	contractReaderInterface *client.ContractReader
-}
-
-type ContractStorageActor interface {
-	client.Actor
-	GetRPCInvoker() neoinvoker.RPCInvoke
-}
-
-var _ engine.MorphRuleChainStorageReader = (*ContractStorageReader)(nil)
-
-func NewContractStorage(actor ContractStorageActor, contract util.Uint160) *ContractStorage {
-	return &ContractStorage{
-		hash:              contract,
-		actor:             actor,
-		contractInterface: client.New(actor, contract),
-	}
-}
-
-type contractStorageActorImpl struct {
-	client.Actor
-	rpcActor actor.RPCActor
-}
-
-var _ ContractStorageActor = &contractStorageActorImpl{}
-
-func (c *contractStorageActorImpl) GetRPCInvoker() neoinvoker.RPCInvoke {
-	return c.rpcActor
-}
-
-// NewContractStorageWithSimpleActor constructs core actor from `rpcActor`.
-//
-// Note: NewContractStorageWithSimpleActor is appropriate only for call-only-once cases (for example, in CLIs). Otherwise, it is unsafe,
-// because core actor may use invalidated `rpcActor` if some connection errors occurred.
-func NewContractStorageWithSimpleActor(rpcActor actor.RPCActor, acc *wallet.Account, contract util.Uint160) (*ContractStorage, error) {
-	act, err := actor.NewSimple(rpcActor, acc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to create simple actor: %w", err)
-	}
-	return NewContractStorage(&contractStorageActorImpl{Actor: act, rpcActor: rpcActor}, contract), nil
-}
-
-func (s *ContractStorage) AddMorphRuleChain(name chain.Name, target engine.Target, c *chain.Chain) (txHash util.Uint256, vub uint32, err error) {
-	if len(c.ID) == 0 {
-		err = ErrEmptyChainID
-		return
-	}
-
-	var kind policy.Kind
-	kind, err = policyKind(target.Type)
-	if err != nil {
-		return
-	}
-	fullName := prefixedChainName(name, c.ID)
-
-	txHash, vub, err = s.contractInterface.AddChain(big.NewInt(int64(kind)), target.Name, fullName, c.Bytes())
-	return
-}
-
-func (s *ContractStorage) RemoveMorphRuleChain(name chain.Name, target engine.Target, chainID chain.ID) (txHash util.Uint256, vub uint32, err error) {
-	if len(chainID) == 0 {
-		err = ErrEmptyChainID
-		return
-	}
-
-	var kind policy.Kind
-	kind, err = policyKind(target.Type)
-	if err != nil {
-		return
-	}
-	fullName := prefixedChainName(name, chainID)
-
-	txHash, vub, err = s.contractInterface.RemoveChain(big.NewInt(int64(kind)), target.Name, fullName)
-	return
-}
-
-func (s *ContractStorage) RemoveMorphRuleChainsByTarget(name chain.Name, target engine.Target) (txHash util.Uint256, vub uint32, err error) {
-	var kind policy.Kind
-	kind, err = policyKind(target.Type)
-	if err != nil {
-		return
-	}
-	fullName := prefixedChainName(name, nil)
-
-	txHash, vub, err = s.contractInterface.RemoveChainsByPrefix(big.NewInt(int64(kind)), target.Name, fullName)
-	return
-}
-
-func listChains(name chain.Name, target engine.Target, rpcInvoker neoinvoker.RPCInvoke, hash util.Uint160) ([]*chain.Chain, error) {
-	kind, err := policyKind(target.Type)
-	if err != nil {
-		return nil, err
-	}
-
-	const (
-		method    = "iteratorChainsByPrefix"
-		batchSize = neoinvoker.DefaultIteratorResultItems
-	)
-
-	inv := neoinvoker.New(rpcInvoker, nil)
-	params := []any{
-		big.NewInt(int64(kind)), target.Name, []byte(name),
-	}
-
-	items, err := commonclient.ReadIteratorItems(inv, batchSize, hash, method, params...)
-	if err != nil {
-		return nil, fmt.Errorf("read items error: %w", err)
-	}
-	var chains []*chain.Chain
-	for _, item := range items {
-		serialized, err := bytesFromStackItem(item)
-		if err != nil {
-			return nil, err
-		}
-		c := new(chain.Chain)
-		if err := c.DecodeBytes(serialized); err != nil {
-			return nil, err
-		}
-		chains = append(chains, c)
-	}
-	return chains, nil
-}
-
-func (s *ContractStorage) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	return listChains(name, target, s.actor.GetRPCInvoker(), s.hash)
-}
-
-func (s *ContractStorage) ListTargetsIterator(targetType engine.TargetType) (uuid.UUID, result.Iterator, error) {
-	kind, err := policyKind(targetType)
-	if err != nil {
-		return uuid.UUID{}, result.Iterator{}, err
-	}
-	return s.contractInterface.ListTargets(big.NewInt(int64(kind)))
-}
-
-func (s *ContractStorage) GetAdmin() (util.Uint160, error) {
-	return s.contractInterface.GetAdmin()
-}
-
-func (s *ContractStorage) SetAdmin(addr util.Uint160) (util.Uint256, uint32, error) {
-	return s.contractInterface.SetAdmin(addr)
-}
-
-type ContractStorageInvoker interface {
-	client.Invoker
-	GetRPCInvoker() neoinvoker.RPCInvoke
-}
-
-func NewContractStorageReader(inv ContractStorageInvoker, contract util.Uint160) *ContractStorageReader {
-	return &ContractStorageReader{
-		hash:                    contract,
-		invoker:                 inv,
-		contractReaderInterface: client.NewReader(inv, contract),
-	}
-}
-
-func (s *ContractStorageReader) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	return listChains(name, target, s.invoker.GetRPCInvoker(), s.hash)
-}
-
-func (s *ContractStorageReader) GetAdmin() (util.Uint160, error) {
-	return s.contractReaderInterface.GetAdmin()
-}
-
-func (s *ContractStorageReader) ListTargetsIterator(targetType engine.TargetType) (uuid.UUID, result.Iterator, error) {
-	kind, err := policyKind(targetType)
-	if err != nil {
-		return uuid.UUID{}, result.Iterator{}, err
-	}
-	return s.contractReaderInterface.ListTargets(big.NewInt(int64(kind)))
-}
-
-func bytesFromStackItem(param stackitem.Item) ([]byte, error) {
-	switch param.Type() {
-	case stackitem.BufferT, stackitem.ByteArrayT, stackitem.IntegerT:
-		return param.TryBytes()
-	case stackitem.AnyT:
-		if param.Value() == nil {
-			return nil, nil
-		}
-		fallthrough
-	default:
-		return nil, fmt.Errorf("chain/client: %s is not a byte array type", param.Type())
-	}
-}
-
-func prefixedChainName(name chain.Name, chainID chain.ID) []byte {
-	return []byte(strings.ToLower(fmt.Sprintf("%s:%s", name, chainID)))
-}
-
-func policyKind(typ engine.TargetType) (policy.Kind, error) {
-	switch typ {
-	case engine.Namespace:
-		return policy.Namespace, nil
-	case engine.Container:
-		return policy.Container, nil
-	case engine.User:
-		return policy.Kind(engine.User), nil
-	case engine.Group:
-		return policy.Kind(engine.Group), nil
-	default:
-		return policy.Kind(0), ErrEngineTargetTypeUnsupported
-	}
-}

pkg/resource/testutil/resource.go

@@ -1,53 +0,0 @@
-package testutil
-
-import (
-	resourcepkg "git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-)
-
-type Resource struct {
-	name       string
-	properties map[string]string
-}
-
-func (r *Resource) Name() string {
-	return r.name
-}
-
-func (r *Resource) Property(name string) string {
-	return r.properties[name]
-}
-
-func NewResource(name string, properties map[string]string) *Resource {
-	if properties == nil {
-		properties = make(map[string]string)
-	}
-	return &Resource{name: name, properties: properties}
-}
-
-type Request struct {
-	operation  string
-	properties map[string]string
-	resource   *Resource
-}
-
-var _ resourcepkg.Request = (*Request)(nil)
-
-func (r *Request) Operation() string {
-	return r.operation
-}
-
-func (r *Request) Resource() resourcepkg.Resource {
-	return r.resource
-}
-
-func (r *Request) Property(name string) string {
-	return r.properties[name]
-}
-
-func NewRequest(op string, r *Resource, properties map[string]string) *Request {
-	return &Request{
-		operation:  op,
-		properties: properties,
-		resource:   r,
-	}
-}

resource.go

@@ -1,4 +1,4 @@
-package resource
+package policyengine
 
 // Request represents generic named resource (bucket, container etc.).
 // Name is resource depenent but should be globally unique for any given

resource_test.go

@@ -0,0 +1,49 @@
+package policyengine
+
+type resource struct {
+	name       string
+	properties map[string]string
+}
+
+func (r *resource) Name() string {
+	return r.name
+}
+
+func (r *resource) Property(name string) string {
+	return r.properties[name]
+}
+
+func newResource(name string, properties map[string]string) *resource {
+	if properties == nil {
+		properties = make(map[string]string)
+	}
+	return &resource{name: name, properties: properties}
+}
+
+type request struct {
+	operation  string
+	properties map[string]string
+	resource   *resource
+}
+
+var _ Request = (*request)(nil)
+
+func (r *request) Operation() string {
+	return r.operation
+}
+
+func (r *request) Resource() Resource {
+	return r.resource
+}
+
+func (r *request) Property(name string) string {
+	return r.properties[name]
+}
+
+func newRequest(op string, r *resource, properties map[string]string) *request {
+	return &request{
+		operation:  op,
+		properties: properties,
+		resource:   r,
+	}
+}

schema/common/consts.go

@@ -1,11 +0,0 @@
-package common
-
-const (
-	PropertyKeyFrostFSIDGroupID = "frostfsid:groupID"
-
-	PropertyKeyFrostFSSourceIP = "frostfs:sourceIP"
-
-	PropertyKeyFormatFrostFSIDUserClaim = "frostfsid:userClaim/%s"
-
-	PropertyKeyFrostFSXHeader = "frostfs:xheader/%s"
-)

schema/native/consts.go

@@ -1,60 +0,0 @@
-package native
-
-const (
-	MethodGetObject    = "GetObject"
-	MethodPutObject    = "PutObject"
-	MethodHeadObject   = "HeadObject"
-	MethodDeleteObject = "DeleteObject"
-	MethodSearchObject = "SearchObject"
-	MethodRangeObject  = "RangeObject"
-	MethodHashObject   = "HashObject"
-	MethodPatchObject  = "PatchObject"
-
-	MethodPutContainer     = "PutContainer"
-	MethodDeleteContainer  = "DeleteContainer"
-	MethodGetContainer     = "GetContainer"
-	MethodListContainers   = "ListContainers"
-	MethodSetContainerEACL = "SetContainerEACL"
-	MethodGetContainerEACL = "GetContainerEACL"
-
-	ObjectPrefix    = "native:object"
-	ContainerPrefix = "native:container"
-
-	ResourceFormatNamespaceObjects          = "native:object/%s/*"
-	ResourceFormatNamespaceContainerObjects = "native:object/%s/%s/*"
-	ResourceFormatNamespaceContainerObject  = "native:object/%s/%s/%s"
-
-	ResourceFormatRootObjects          = "native:object//*"
-	ResourceFormatRootContainerObjects = "native:object//%s/*"
-	ResourceFormatRootContainerObject  = "native:object//%s/%s"
-
-	ResourceFormatAllObjects = "native:object/*"
-
-	ResourceFormatNamespaceContainer  = "native:container/%s/%s"
-	ResourceFormatNamespaceContainers = "native:container/%s/*"
-
-	ResourceFormatRootContainer  = "native:container//%s"
-	ResourceFormatRootContainers = "native:container//*"
-
-	ResourceFormatAllContainers = "native:container/*"
-
-	PropertyKeyActorPublicKey = "$Actor:publicKey"
-	PropertyKeyActorRole      = "$Actor:role"
-
-	PropertyKeyObjectVersion         = "$Object:version"
-	PropertyKeyObjectID              = "$Object:objectID"
-	PropertyKeyObjectContainerID     = "$Object:containerID"
-	PropertyKeyObjectOwnerID         = "$Object:ownerID"
-	PropertyKeyObjectCreationEpoch   = "$Object:creationEpoch"
-	PropertyKeyObjectPayloadLength   = "$Object:payloadLength"
-	PropertyKeyObjectPayloadHash     = "$Object:payloadHash"
-	PropertyKeyObjectType            = "$Object:objectType"
-	PropertyKeyObjectHomomorphicHash = "$Object:homomorphicHash"
-
-	PropertyKeyContainerOwnerID = "$Container:ownerID"
-
-	PropertyValueContainerRoleOwner     = "owner"
-	PropertyValueContainerRoleIR        = "ir"
-	PropertyValueContainerRoleContainer = "container"
-	PropertyValueContainerRoleOthers    = "others"
-)

schema/native/util/validation.go

@@ -1,45 +0,0 @@
-package util
-
-import (
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-)
-
-var nativePatterns = []string{
-	native.ResourceFormatNamespaceObjects, native.ResourceFormatNamespaceContainerObjects,
-	native.ResourceFormatNamespaceContainerObject, native.ResourceFormatRootObjects,
-	native.ResourceFormatRootContainerObjects, native.ResourceFormatRootContainerObject,
-	native.ResourceFormatAllObjects, native.ResourceFormatNamespaceContainer,
-	native.ResourceFormatNamespaceContainers, native.ResourceFormatRootContainer,
-	native.ResourceFormatRootContainers, native.ResourceFormatAllContainers,
-}
-
-func match(resource, pattern string) bool {
-	rTokens := strings.Split(resource, "/")
-	pToken := strings.Split(pattern, "/")
-
-	if len(rTokens) != len(pToken) {
-		return false
-	}
-
-	for i := range rTokens {
-		if pToken[i] == "%s" {
-			continue
-		}
-		if pToken[i] != rTokens[i] {
-			return false
-		}
-	}
-
-	return true
-}
-
-func IsNativeResourceNameValid(resource string) bool {
-	for _, pattern := range nativePatterns {
-		if match(resource, pattern) {
-			return true
-		}
-	}
-	return false
-}

schema/native/util/validation_test.go

@@ -1,97 +0,0 @@
-package util
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-var tests = []struct {
-	name     string
-	expected bool
-	resource string
-}{
-	{
-		name:     "ResourceFormatNamespaceObjects",
-		expected: true,
-		resource: "native:object/RootNamespace/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainerObjects",
-		expected: true,
-		resource: "native:object/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainerObject",
-		expected: true,
-		resource: "native:object/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/AeZa5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB4E",
-	},
-	{
-		name:     "ResourceFormatRootObjects",
-		expected: true,
-		resource: "native:object//*",
-	},
-	{
-		name:     "ResourceFormatRootContainerObjects",
-		expected: true,
-		resource: "native:object//BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/*",
-	},
-	{
-		name:     "ResourceFormatRootContainerObject",
-		expected: true,
-		resource: "native:object//BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/AeZa5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB4E",
-	},
-	{
-		name:     "ResourceFormatAllObjects",
-		expected: true,
-		resource: "native:object/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainer",
-		expected: true,
-		resource: "native:container/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainers",
-		expected: true,
-		resource: "native:container/RootNamespace/*",
-	},
-	{
-		name:     "ResourceFormatRootContainers",
-		expected: true,
-		resource: "native:container//*",
-	},
-	{
-		name:     "ResourceFormatAllContainers",
-		expected: true,
-		resource: "native:container/*",
-	},
-	{
-		name:     "Invalid resource 1",
-		expected: false,
-		resource: "native:::container/*",
-	},
-	{
-		name:     "Invalid resource 2",
-		expected: false,
-		resource: "native:container/RootNamespace/w5HH3feoxFDD5tCTtoRzB3R/Bz726qzgLfxEE7wgtoRzB3R/RootNamespace",
-	},
-}
-
-func TestIsNativeResourceNameValid(t *testing.T) {
-	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
-			require.Equal(t, test.expected, IsNativeResourceNameValid(test.resource))
-		})
-	}
-}
-
-func BenchmarkIsNativeResourceNameValid(b *testing.B) {
-	for _, test := range tests {
-		b.Run(test.name, func(b *testing.B) {
-			for i := 0; i < b.N; i++ {
-				_ = IsNativeResourceNameValid(test.resource)
-			}
-		})
-	}
-}

schema/s3/consts.go

@@ -1,24 +0,0 @@
-package s3
-
-const (
-	PropertyKeyOwner = "Owner"
-
-	PropertyKeyDelimiter = "s3:delimiter"
-	PropertyKeyPrefix    = "s3:prefix"
-	PropertyKeyVersionID = "s3:VersionId"
-	PropertyKeyMaxKeys   = "s3:max-keys"
-
-	PropertyKeyFormatResourceTag = "aws:ResourceTag/%s"
-	PropertyKeyFormatRequestTag  = "aws:RequestTag/%s"
-
-	PropertyKeyAccessBoxAttrMFA    = "AccessBox-Attribute/IAM-MFA"
-	PropertyKeyFormatAccessBoxAttr = "AccessBox-Attribute/%s"
-
-	ResourceFormatS3All           = "arn:aws:s3:::*"
-	ResourceFormatS3Bucket        = "arn:aws:s3:::%s"
-	ResourceFormatS3BucketObjects = "arn:aws:s3:::%s/*"
-	ResourceFormatS3BucketObject  = "arn:aws:s3:::%s/%s"
-
-	ResourceFormatIAMNamespaceUser  = "arn:aws:iam::%s:user/%s"
-	ResourceFormatIAMNamespaceGroup = "arn:aws:iam::%s:group/%s"
-)