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[#372] authmate: Don't create creds with eacl table

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Allow only impersonate flag.
Don't allow SetEACL container session token.

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
This commit is contained in:
Denis Kirillov 2024-05-28 12:10:28 +03:00
parent 77f8bdac58
commit 9241954496
5 changed files with 89 additions and 209 deletions
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60
authmate/authmate.go
View file

@ -20,7 +20,6 @@ import (
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
frostfsecdsa "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/crypto/ecdsa"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@ -102,7 +101,6 @@ type (
Container ContainerOptions
FrostFSKey *keys.PrivateKey
GatesPublicKeys []*keys.PublicKey
EACLRules []byte
Impersonate bool
SessionTokenRules []byte
SkipSessionRules bool
@ -441,47 +439,11 @@ func (a *Agent) ObtainSecret(ctx context.Context, w io.Writer, options *ObtainSe
return enc.Encode(or)
}
func buildEACLTable(eaclTable []byte) (*eacl.Table, error) {
table := eacl.NewTable()
if len(eaclTable) != 0 {
return table, table.UnmarshalJSON(eaclTable)
}
record := eacl.NewRecord()
record.SetOperation(eacl.OperationGet)
record.SetAction(eacl.ActionAllow)
eacl.AddFormedTarget(record, eacl.RoleOthers)
table.AddRecord(record)
for _, rec := range restrictedRecords() {
table.AddRecord(rec)
}
return table, nil
}
func restrictedRecords() (records []*eacl.Record) {
for op := eacl.OperationGet; op <= eacl.OperationRangeHash; op++ {
record := eacl.NewRecord()
record.SetOperation(op)
record.SetAction(eacl.ActionDeny)
eacl.AddFormedTarget(record, eacl.RoleOthers)
records = append(records, record)
}
return
}
func buildBearerToken(key *keys.PrivateKey, impersonate bool, table *eacl.Table, lifetime lifetimeOptions, gateKey *keys.PublicKey) (*bearer.Token, error) {
func buildBearerToken(key *keys.PrivateKey, impersonate bool, lifetime lifetimeOptions, gateKey *keys.PublicKey) (*bearer.Token, error) {
var ownerID user.ID
user.IDFromKey(&ownerID, (ecdsa.PublicKey)(*gateKey))
var bearerToken bearer.Token
if !impersonate {
bearerToken.SetEACLTable(*table)
}
bearerToken.ForUser(ownerID)
bearerToken.SetExp(lifetime.Exp)
bearerToken.SetIat(lifetime.Iat)
@ -496,10 +458,10 @@ func buildBearerToken(key *keys.PrivateKey, impersonate bool, table *eacl.Table,
return &bearerToken, nil
}
func buildBearerTokens(key *keys.PrivateKey, impersonate bool, table *eacl.Table, lifetime lifetimeOptions, gatesKeys []*keys.PublicKey) ([]*bearer.Token, error) {
func buildBearerTokens(key *keys.PrivateKey, impersonate bool, lifetime lifetimeOptions, gatesKeys []*keys.PublicKey) ([]*bearer.Token, error) {
bearerTokens := make([]*bearer.Token, 0, len(gatesKeys))
for _, gateKey := range gatesKeys {
tkn, err := buildBearerToken(key, impersonate, table, lifetime, gateKey)
tkn, err := buildBearerToken(key, impersonate, lifetime, gateKey)
if err != nil {
return nil, fmt.Errorf("build bearer token: %w", err)
}
@ -544,12 +506,7 @@ func buildSessionTokens(key *keys.PrivateKey, lifetime lifetimeOptions, ctxs []s
func createTokens(options *IssueSecretOptions, lifetime lifetimeOptions) ([]*accessbox.GateData, error) {
gates := make([]*accessbox.GateData, len(options.GatesPublicKeys))
table, err := buildEACLTable(options.EACLRules)
if err != nil {
return nil, fmt.Errorf("failed to build eacl table: %w", err)
}
bearerTokens, err := buildBearerTokens(options.FrostFSKey, options.Impersonate, table, lifetime, options.GatesPublicKeys)
bearerTokens, err := buildBearerTokens(options.FrostFSKey, options.Impersonate, lifetime, options.GatesPublicKeys)
if err != nil {
return nil, fmt.Errorf("failed to build bearer tokens: %w", err)
}
@ -577,9 +534,14 @@ func createTokens(options *IssueSecretOptions, lifetime lifetimeOptions) ([]*acc
func formTokensToUpdate(options tokenUpdateOptions) ([]*accessbox.GateData, error) {
btoken := options.box.Gate.BearerToken
table := btoken.EACLTable()
bearerTokens, err := buildBearerTokens(options.frostFSKey, btoken.Impersonate(), &table, options.lifetime, options.gatesPublicKeys)
btokenv2 := new(acl.BearerToken)
btoken.WriteToV2(btokenv2)
if btokenv2.GetBody().GetEACL() != nil {
return nil, errors.New("EACL table in bearer token isn't supported")
}
bearerTokens, err := buildBearerTokens(options.frostFSKey, btoken.Impersonate(), options.lifetime, options.gatesPublicKeys)
if err != nil {
return nil, fmt.Errorf("failed to build bearer tokens: %w", err)
}

17
authmate/session_tokens.go
View file

@ -2,6 +2,7 @@ package authmate
import (
"encoding/json"
"errors"
"fmt"
apisession "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
@ -55,22 +56,11 @@ func buildContext(rules []byte) ([]sessionTokenContext, error) {
return nil, fmt.Errorf("failed to unmarshal rules for session token: %w", err)
}
var (
containsPut = false
containsSetEACL = false
)
for _, d := range sessionCtxs {
if d.verb == session.VerbContainerPut {
containsPut = true
} else if d.verb == session.VerbContainerSetEACL {
containsSetEACL = true
if d.verb == session.VerbContainerSetEACL {
return nil, errors.New("verb container SetEACL isn't supported")
}
}
if containsPut && !containsSetEACL {
sessionCtxs = append(sessionCtxs, sessionTokenContext{
verb: session.VerbContainerSetEACL,
})
}
return sessionCtxs, nil
}
@ -78,6 +68,5 @@ func buildContext(rules []byte) ([]sessionTokenContext, error) {
return []sessionTokenContext{
{verb: session.VerbContainerPut},
{verb: session.VerbContainerDelete},
{verb: session.VerbContainerSetEACL},
}, nil
}

7
authmate/session_tokens_test.go
View file

@ -17,20 +17,15 @@ func TestContainerSessionRules(t *testing.T) {
{
"verb": "DELETE",
"containerID": "6CcWg8LkcbfMUC8pt7wiy5zM1fyS3psNoxgfppcCgig1"
},
{
"verb": "SETEACL"
}
]`)
sessionContext, err := buildContext(jsonRules)
require.NoError(t, err)
require.Len(t, sessionContext, 3)
require.Len(t, sessionContext, 2)
require.Equal(t, sessionContext[0].verb, session.VerbContainerPut)
require.Zero(t, sessionContext[0].containerID)
require.Equal(t, sessionContext[1].verb, session.VerbContainerDelete)
require.NotNil(t, sessionContext[1].containerID)
require.Equal(t, sessionContext[2].verb, session.VerbContainerSetEACL)
require.Zero(t, sessionContext[2].containerID)
}

19
cmd/s3-authmate/modules/issue-secret.go
View file

@ -2,7 +2,6 @@ package modules
import (
"context"
"errors"
"fmt"
"os"
"time"
@ -29,8 +28,6 @@ const (
walletFlag = "wallet"
addressFlag = "address"
peerFlag = "peer"
bearerRulesFlag = "bearer-rules"
disableImpersonateFlag = "disable-impersonate"
gatePublicKeyFlag = "gate-public-key"
containerIDFlag = "container-id"
containerFriendlyNameFlag = "container-friendly-name"
@ -70,8 +67,6 @@ func initIssueSecretCmd() {
issueSecretCmd.Flags().String(walletFlag, "", "Path to the wallet that will be owner of the credentials")
issueSecretCmd.Flags().String(addressFlag, "", "Address of the wallet account")
issueSecretCmd.Flags().String(peerFlag, "", "Address of a frostfs peer to connect to")
issueSecretCmd.Flags().String(bearerRulesFlag, "", "Rules for bearer token (filepath or a plain json string are allowed, can be used only with --disable-impersonate)")
issueSecretCmd.Flags().Bool(disableImpersonateFlag, false, "Mark token as not impersonate to don't consider token signer as request owner (must be provided to use --bearer-rules flag)")
issueSecretCmd.Flags().StringSlice(gatePublicKeyFlag, nil, "Public 256r1 key of a gate (use flags repeatedly for multiple gates or separate them by comma)")
issueSecretCmd.Flags().String(containerIDFlag, "", "Auth container id to put the secret into (if not provided new container will be created)")
issueSecretCmd.Flags().String(containerFriendlyNameFlag, "", "Friendly name of auth container to put the secret into (flag value will be used only if --container-id is missed)")
@ -134,17 +129,6 @@ func runIssueSecretCmd(cmd *cobra.Command, _ []string) error {
return wrapPreparationError(fmt.Errorf("couldn't parse container policy: %s", err.Error()))
}
disableImpersonate := viper.GetBool(disableImpersonateFlag)
eaclRules := viper.GetString(bearerRulesFlag)
if !disableImpersonate && eaclRules != "" {
return wrapPreparationError(errors.New("--bearer-rules flag can be used only with --disable-impersonate"))
}
bearerRules, err := getJSONRules(eaclRules)
if err != nil {
return wrapPreparationError(fmt.Errorf("couldn't parse 'bearer-rules' flag: %s", err.Error()))
}
sessionRules, skipSessionRules, err := getSessionRules(viper.GetString(sessionTokensFlag))
if err != nil {
return wrapPreparationError(fmt.Errorf("couldn't parse 'session-tokens' flag: %s", err.Error()))
@ -200,8 +184,7 @@ func runIssueSecretCmd(cmd *cobra.Command, _ []string) error {
},
FrostFSKey: key,
GatesPublicKeys: gatesPublicKeys,
EACLRules: bearerRules,
Impersonate: !disableImpersonate,
Impersonate: true,
SessionTokenRules: sessionRules,
SkipSessionRules: skipSessionRules,
ContainerPolicies: policies,

191
docs/authmate.md
View file

@ -20,10 +20,10 @@ potentially).
1. [Generation of wallet](#generation-of-wallet)
2. [Issuance of a secret](#issuance-of-a-secret)
1. [CLI parameters](#cli-parameters)
2. [Bearer tokens](#bearer-tokens)
3. [Session tokens](#session-tokens)
4. [Containers policy](#containers-policy)
1. [CLI parameters](#cli-parameters)
2. [Bearer tokens](#bearer-tokens)
3. [Session tokens](#session-tokens)
4. [Containers policy](#containers-policy)
3. [Obtainment of a secret](#obtaining-credential-secrets)
4. [Generate presigned url](#generate-presigned-url)
5. [Update secrets](#update-secret)
@ -75,6 +75,7 @@ wallet is successfully created, the file location is wallet.json
```
To get the public key from the wallet:
```shell
$ ./bin/neo-go wallet dump-keys -w wallet.json
@ -90,22 +91,25 @@ put them as an object into a container on the FrostFS network.
### CLI parameters
**Required parameters:**
* `--wallet` is a path to a wallet `.json` file. You can provide a passphrase to decrypt
a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
interactively. You can also specify an account address to use from a wallet using the `--address` parameter.
a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
interactively. You can also specify an account address to use from a wallet using the `--address` parameter.
* `--peer` is an address of a FrostFS peer to connect to
* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates). The tokens are encrypted
by a set of gateway keys, so you need to pass them as well.
* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates). The
tokens are encrypted by a set of gateway keys, so you need to pass them as well.
You can issue a secret using the parameters above only. The tool will
1. create a new container
1. without a friendly name
2. with ACL `0x3c8c8cce` -- all operations are forbidden for `OTHERS` and `BEARER` user groups, except for `GET`
3. with policy `REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
2. put bearer and session tokens with default rules (details in [Bearer tokens](#Bearer tokens) and
[Session tokens](#Session tokens))
1. without a friendly name
2. with ACL `0x3c8c8cce` -- all operations are forbidden for `OTHERS` and `BEARER` user groups, except for `GET`
3. with policy `REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
2. put bearer and session tokens with default rules (details in [Bearer tokens](#bearer-tokens) and
[Session tokens](#session-tokens))
E.g.:
```shell
$ frostfs-s3-authmate issue-secret --wallet wallet.json \
--peer 192.168.130.71:8080 \
@ -128,134 +132,78 @@ $ frostfs-s3-authmate issue-secret --wallet wallet.json \
`initial_access_key_id` contains the first credentials in the chain of credentials versions
(can be useful when you update your credentials).
`access_key_id` consists of Base58 encoded containerID(cid) and objectID(oid) stored on the FrostFS network and containing
`access_key_id` consists of Base58 encoded containerID(cid) and objectID(oid) stored on the FrostFS network and
containing
the secret. Format of `access_key_id`: `%cid0%oid`, where 0(zero) is a delimiter.
**Optional parameters:**
* `--container-id` - you can put the tokens into an existing container, but this way is ***not recommended***.
* `--container-friendly-name` -- name of a container with tokens, by default container will not have a friendly name
* `--container-placement-policy` - placement policy of auth container to put the secret into. Default value is
`REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
* `--lifetime`-- lifetime of tokens. For example 50h30m (note: max time unit is an hour so to set a day you should use
24h). Default value is `720h` (30 days). It will be ceil rounded to the nearest amount of epoch
* `--container-placement-policy` - placement policy of auth container to put the secret into. Default value is
`REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
* `--lifetime`-- lifetime of tokens. For example 50h30m (note: max time unit is an hour so to set a day you should use
24h). Default value is `720h` (30 days). It will be ceil rounded to the nearest amount of epoch
* `--aws-cli-credentials` - path to the aws cli credentials file, where authmate will write `access_key_id` and
`secret_access_key` to
`secret_access_key` to
* `--access-key-id` -- credentials that you want to update (e.g. to add more gates that can use your creds)
without changing values of `aws_access_key_id` and `aws_secret_access_key`. If you want to update credential you MUST
provide also secret key using `AUTHMATE_SECRET_ACCESS_KEY` env variable.
without changing values of `aws_access_key_id` and `aws_secret_access_key`. If you want to update credential you MUST
provide also secret key using `AUTHMATE_SECRET_ACCESS_KEY` env variable.
* `--frostfsid` -- FrostfsID contract hash (LE) or name in NNS to register public key in contract
(`--rpc-endpoint` flag also must be provided).
(`--rpc-endpoint` flag also must be provided).
* `--rpc-endpoint` -- NEO node RPC address.
### Bearer tokens
Creation of bearer tokens is mandatory.
By default, bearer token will be created with `impersonate` flag and won't have eACL table. It means that gate which will use such token
to interact with node can have access to your private containers or to containers in which eACL grants access to you
by public key.
Rules for a bearer token can be set via parameter `--bearer-rules` (json-string and file path allowed).
But you must provide `--disable-impersonate` flag:
```shell
$ frostfs-s3-authmate issue-secret --wallet wallet.json \
--peer 192.168.130.71:8080 \
--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
--bearer-rules bearer-rules.json \
--disable-impersonate
```
where content of `bearer-rules.json`:
```json
{
"records": [
{"operation": "PUT", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GET", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "HEAD", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "DELETE", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "SEARCH", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GETRANGE", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GETRANGEHASH", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]}
]
}
```
**Note:** such rules allow all operations for all users (the same behavior when records are empty).
To restrict access you MUST provide records with `DENY` action. That's why we recommend always place such records
at the end of records (see default rules below) to prevent undesirable access violation.
Since the rules are applied from top to bottom, they do not override what was previously allowed.
If bearer rules are not set, a token will be auto-generated with a value:
```json
{
"version": {
"major": 2,
"minor": 11
},
"containerID": {
"value": null
},
"records": [
{"operation": "GET", "action": "ALLOW", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GET", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "HEAD", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "PUT", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "DELETE", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "SEARCH", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GETRANGE", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]},
{"operation": "GETRANGEHASH", "action": "DENY", "filters": [], "targets": [{"role": "OTHERS", "keys": []}]}
]
}
```
Bearer token will be created with `impersonate` flag. It means that gate (which will use such token to interact with
node) can have access to your private containers or to containers in which eACL grants access to you by public key.
### Session tokens
With a session token, there are 3 options:
1. append `--session-tokens` parameter with your custom rules in json format (as a string or file path). E.g.:
```shell
$ frostfs-s3-authmate issue-secret --wallet wallet.json \
--peer 192.168.130.71:8080 \
--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
--session-tokens session.json
```
where content of `session.json`:
```json
[
{
"verb": "PUT",
"containerID": null
},
{
"verb": "DELETE",
"containerID": null
},
{
"verb": "SETEACL",
"containerID": null
}
]
```
```shell
$ frostfs-s3-authmate issue-secret --wallet wallet.json \
--peer 192.168.130.71:8080 \
--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
--session-tokens session.json
```
where content of `session.json`:
```json
[
{
"verb": "PUT",
"containerID": null
},
{
"verb": "DELETE",
"containerID": null
}
]
```
Available `verb` values: `PUT`, `DELETE`, `SETEACL`.
Available `verb` values: `PUT`, `DELETE`.
If `containerID` is `null` or omitted, then session token rule will be applied
to all containers. Otherwise, specify `containerID` value in human-redabale
format (base58 encoded string).
If `containerID` is `null` or omitted, then session token rule will be applied
to all containers. Otherwise, specify `containerID` value in human-readable
format (base58 encoded string).
> **_NB!_** To create buckets in FrostFS it's necessary to have session tokens with `PUT` and `SETEACL` permissions, that's why
the authmate creates a `SETEACL` session token automatically in case when a user specified the token rule with `PUT` and
forgot about the rule with `SETEACL`.
> **_NB!_** To create buckets in FrostFS it's necessary to have session tokens with `PUT` permissions.
2. append `--session-tokens` parameter with the value `none` -- no session token will be created
3. skip the parameter, and `authmate` will create session tokens with default rules (the same as in `session.json`
in example above)
in example above)
### Containers policy
Rules for mapping of `LocationConstraint` ([aws spec](https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateBucket.html#API_CreateBucket_RequestBody))
Rules for mapping
of `LocationConstraint` ([aws spec](https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateBucket.html#API_CreateBucket_RequestBody))
to `PlacementPolicy`
can be set via parameter `--container-policy` (json-string and file path allowed):
```json
{
"rep-3": "REP 3",
@ -302,7 +250,6 @@ Enter password for gate-wallet.json >
}
```
## Generate presigned URL
You can generate [presigned url](https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-presigned-url.html)
@ -332,6 +279,7 @@ $ frostfs-s3-authmate generate-presigned-url --endpoint http://localhost:8084 \
```
### AWS CLI
You can also can get the presigned URL (only for GET) using aws cli v2:
```shell
@ -341,18 +289,21 @@ http://localhost:8084/pregigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Crede
```
## Update secret
You can extend list of s3 gates that can accept already issued credentials.
To do this use `frostfs-s3-authmate update-secret` command:
**Required parameters:**
* `--wallet` is a path to a user wallet `.json` file. You can provide a passphrase to decrypt
a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
interactively. You can also specify an account address to use from a wallet using the `--address` parameter.
* `--gate-wallet` is a path to a gate wallet `.json` file (need to decrypt current access box version). You can provide a passphrase to decrypt
* `--gate-wallet` is a path to a gate wallet `.json` file (need to decrypt current access box version). You can provide
a passphrase to decrypt
a wallet via environment variable `AUTHMATE_WALLET_GATE_PASSPHRASE`, or you will be asked to enter a passphrase
interactively. You can also specify an account address to use from a wallet using the `--gate-address` parameter.
* `--peer` is an address of a FrostFS peer to connect to
* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates).
* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates).
* `--access-key-id` is a credential id to update.
```shell
@ -380,9 +331,9 @@ Enter password for s3-wallet.json >
There are several non-zero exit codes added at the moment.
| Code | Description |
|-------|--------------------------------------------------------------------------------------------|
| 1 | Any unknown errors, or errors generated by the parser of command line parameters. |
| 2 | Preparation errors: malformed configuration, issues with input data parsing. |
| 3 | FrostFS errors: connectivity problems, misconfiguration. |
| 4 | Business logic errors: `authmate` could not execute its task because of some restrictions. |
| Code | Description |
|------|--------------------------------------------------------------------------------------------|
| 1 | Any unknown errors, or errors generated by the parser of command line parameters. |
| 2 | Preparation errors: malformed configuration, issues with input data parsing. |
| 3 | FrostFS errors: connectivity problems, misconfiguration. |
| 4 | Business logic errors: `authmate` could not execute its task because of some restrictions. |