forked from TrueCloudLab/policy-engine
[#4] Add IAM policy unmarshaler
This commit is contained in:
parent
5ebb2e694c
commit
88cf807951
5 changed files with 847 additions and 30 deletions
227
iam/converter.go
Normal file
227
iam/converter.go
Normal file
|
@ -0,0 +1,227 @@
|
|||
package iam
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
policyengine "git.frostfs.info/TrueCloudLab/policy-engine"
|
||||
)
|
||||
|
||||
const (
|
||||
FrostFSPrincipal = "FrostFS"
|
||||
|
||||
RequestOwnerProperty = "Owner"
|
||||
)
|
||||
|
||||
const (
|
||||
// String condition operators.
|
||||
CondStringEquals string = "StringEquals"
|
||||
CondStringNotEquals string = "StringNotEquals"
|
||||
CondStringEqualsIgnoreCase string = "StringEqualsIgnoreCase"
|
||||
CondStringNotEqualsIgnoreCase string = "StringNotEqualsIgnoreCase"
|
||||
CondStringLike string = "StringLike"
|
||||
CondStringNotLike string = "StringNotLike"
|
||||
|
||||
// Numeric condition operators.
|
||||
CondNumericEquals string = "NumericEquals"
|
||||
CondNumericNotEquals string = "NumericNotEquals"
|
||||
CondNumericLessThan string = "NumericLessThan"
|
||||
CondNumericLessThanEquals string = "NumericLessThanEquals"
|
||||
CondNumericGreaterThan string = "NumericGreaterThan"
|
||||
CondNumericGreaterThanEquals string = "NumericGreaterThanEquals"
|
||||
|
||||
// Date condition operators.
|
||||
CondDateEquals string = "DateEquals"
|
||||
CondDateNotEquals string = "DateNotEquals"
|
||||
CondDateLessThan string = "DateLessThan"
|
||||
CondDateLessThanEquals string = "DateLessThanEquals"
|
||||
CondDateGreaterThan string = "DateGreaterThan"
|
||||
CondDateGreaterThanEquals string = "DateGreaterThanEquals"
|
||||
|
||||
// Bolean condition operators.
|
||||
CondBool string = "Bool"
|
||||
|
||||
// IP address condition operators.
|
||||
CondIPAddress string = "IpAddress"
|
||||
CondNotIPAddress string = "NotIpAddress"
|
||||
|
||||
// ARN condition operators.
|
||||
CondArnEquals string = "ArnEquals"
|
||||
CondArnLike string = "ArnLike"
|
||||
CondArnNotEquals string = "ArnNotEquals"
|
||||
CondArnNotLike string = "ArnNotLike"
|
||||
)
|
||||
|
||||
func (p Policy) ToChain() (*policyengine.Chain, error) {
|
||||
var chain policyengine.Chain
|
||||
|
||||
for _, statement := range p.Statement {
|
||||
status := policyengine.AccessDenied
|
||||
if statement.Effect == AllowEffect {
|
||||
status = policyengine.Allow
|
||||
}
|
||||
|
||||
if len(statement.Principal) != 1 {
|
||||
return nil, errors.New("currently supported exactly one principal type")
|
||||
}
|
||||
|
||||
var principals []string
|
||||
var op policyengine.ConditionType
|
||||
if _, ok := statement.Principal[Wildcard]; ok {
|
||||
principals = []string{Wildcard}
|
||||
op = policyengine.CondStringLike
|
||||
} else if frostfsPrincipals, ok := statement.Principal[FrostFSPrincipal]; ok {
|
||||
principals = frostfsPrincipals
|
||||
op = policyengine.CondStringEquals
|
||||
} else {
|
||||
return nil, errors.New("currently supported only FrostFS or all (wildcard) principals")
|
||||
}
|
||||
|
||||
var conditions []policyengine.Condition
|
||||
for _, principal := range principals {
|
||||
conditions = append(conditions, policyengine.Condition{
|
||||
Op: op,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: RequestOwnerProperty,
|
||||
Value: principal,
|
||||
})
|
||||
}
|
||||
|
||||
conds, err := statement.Conditions.ToChainCondition()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
conditions = append(conditions, conds...)
|
||||
|
||||
r := policyengine.Rule{
|
||||
Status: status,
|
||||
Action: statement.Action,
|
||||
Resource: statement.Resource,
|
||||
Any: true,
|
||||
Condition: conditions,
|
||||
}
|
||||
chain.Rules = append(chain.Rules, r)
|
||||
}
|
||||
|
||||
return &chain, nil
|
||||
}
|
||||
|
||||
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
|
||||
}
|
||||
|
||||
conditions = append(conditions, policyengine.Condition{
|
||||
Op: condType,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: key,
|
||||
Value: converted,
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return conditions, nil
|
||||
}
|
||||
|
||||
type convertFunction func(string) (string, error)
|
||||
|
||||
func noConvertFunction(val string) (string, error) {
|
||||
return val, nil
|
||||
}
|
||||
|
||||
func dateConvertFunction(val string) (string, error) {
|
||||
if _, err := strconv.ParseInt(val, 10, 64); err == nil {
|
||||
return val, nil
|
||||
}
|
||||
|
||||
parsed, err := time.Parse(time.RFC3339, val)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return strconv.FormatInt(parsed.UTC().Unix(), 10), nil
|
||||
}
|
270
iam/converter_test.go
Normal file
270
iam/converter_test.go
Normal file
|
@ -0,0 +1,270 @@
|
|||
package iam
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
policyengine "git.frostfs.info/TrueCloudLab/policy-engine"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
func TestConverters(t *testing.T) {
|
||||
t.Run("valid policy", func(t *testing.T) {
|
||||
p := Policy{
|
||||
Version: "2012-10-17",
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{
|
||||
FrostFSPrincipal: {"arn:aws:iam::111122223333:user/JohnDoe"},
|
||||
},
|
||||
Effect: AllowEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
Conditions: map[string]Condition{
|
||||
CondStringEquals: {
|
||||
"s3:RequestObjectTag/Department": {"Finance"},
|
||||
},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
expected := &policyengine.Chain{Rules: []policyengine.Rule{
|
||||
{
|
||||
Status: policyengine.Allow,
|
||||
Action: p.Statement[0].Action,
|
||||
Resource: p.Statement[0].Resource,
|
||||
Any: true,
|
||||
Condition: []policyengine.Condition{
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: RequestOwnerProperty,
|
||||
Value: "arn:aws:iam::111122223333:user/JohnDoe",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "s3:RequestObjectTag/Department",
|
||||
Value: "Finance",
|
||||
},
|
||||
},
|
||||
},
|
||||
}}
|
||||
|
||||
chain, err := p.ToChain()
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expected, chain)
|
||||
})
|
||||
|
||||
t.Run("invalid policy (unsupported principal type)", func(t *testing.T) {
|
||||
p := Policy{
|
||||
Version: "2012-10-17",
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{
|
||||
"AWS": {"arn:aws:iam::111122223333:user/JohnDoe"},
|
||||
},
|
||||
Effect: AllowEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
}},
|
||||
}
|
||||
|
||||
_, err := p.ToChain()
|
||||
require.Error(t, err)
|
||||
})
|
||||
|
||||
t.Run("invalid policy (missing principal)", func(t *testing.T) {
|
||||
p := Policy{
|
||||
Version: "2012-10-17",
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{},
|
||||
Effect: AllowEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
}},
|
||||
}
|
||||
|
||||
_, err := p.ToChain()
|
||||
require.Error(t, err)
|
||||
})
|
||||
|
||||
t.Run("check policy conditions", func(t *testing.T) {
|
||||
p := Policy{
|
||||
Version: "2012-10-17",
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{"*": nil},
|
||||
Effect: AllowEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
Conditions: Conditions{
|
||||
CondStringEquals: {"key1": {"val0", "val1"}},
|
||||
CondStringNotEquals: {"key2": {"val2"}},
|
||||
CondStringEqualsIgnoreCase: {"key3": {"val3"}},
|
||||
CondStringNotEqualsIgnoreCase: {"key4": {"val4"}},
|
||||
CondStringLike: {"key5": {"val5"}},
|
||||
CondStringNotLike: {"key6": {"val6"}},
|
||||
CondDateEquals: {"key7": {"2006-01-02T15:04:05+07:00"}},
|
||||
CondDateNotEquals: {"key8": {"2006-01-02T15:04:05Z"}},
|
||||
CondDateLessThan: {"key9": {"2006-01-02T15:04:05+06:00"}},
|
||||
CondDateLessThanEquals: {"key10": {"2006-01-02T15:04:05+03:00"}},
|
||||
CondDateGreaterThan: {"key11": {"2006-01-02T15:04:05-01:00"}},
|
||||
CondDateGreaterThanEquals: {"key12": {"2006-01-02T15:04:05-03:00"}},
|
||||
CondBool: {"key13": {"True"}},
|
||||
CondIPAddress: {"key14": {"val14"}},
|
||||
CondNotIPAddress: {"key15": {"val15"}},
|
||||
CondArnEquals: {"key16": {"val16"}},
|
||||
CondArnLike: {"key17": {"val17"}},
|
||||
CondArnNotEquals: {"key18": {"val18"}},
|
||||
CondArnNotLike: {"key19": {"val19"}},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
expected := &policyengine.Chain{Rules: []policyengine.Rule{
|
||||
{
|
||||
Status: policyengine.Allow,
|
||||
Action: p.Statement[0].Action,
|
||||
Resource: p.Statement[0].Resource,
|
||||
Any: true,
|
||||
Condition: []policyengine.Condition{
|
||||
{
|
||||
Op: policyengine.CondStringLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: RequestOwnerProperty,
|
||||
Value: "*",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key1",
|
||||
Value: "val0",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key1",
|
||||
Value: "val1",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key2",
|
||||
Value: "val2",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEqualsIgnoreCase,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key3",
|
||||
Value: "val3",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotEqualsIgnoreCase,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key4",
|
||||
Value: "val4",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key5",
|
||||
Value: "val5",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key6",
|
||||
Value: "val6",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key7",
|
||||
Value: "1136189045",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key8",
|
||||
Value: "1136214245",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringLessThan,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key9",
|
||||
Value: "1136192645",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringLessThanEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key10",
|
||||
Value: "1136203445",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringGreaterThan,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key11",
|
||||
Value: "1136217845",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringGreaterThanEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key12",
|
||||
Value: "1136225045",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEqualsIgnoreCase,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key13",
|
||||
Value: "True",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key14",
|
||||
Value: "val14",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key15",
|
||||
Value: "val15",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key16",
|
||||
Value: "val16",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key17",
|
||||
Value: "val17",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotEquals,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key18",
|
||||
Value: "val18",
|
||||
},
|
||||
{
|
||||
Op: policyengine.CondStringNotLike,
|
||||
Object: policyengine.ObjectRequest,
|
||||
Key: "key19",
|
||||
Value: "val19",
|
||||
},
|
||||
},
|
||||
},
|
||||
}}
|
||||
|
||||
chain, err := p.ToChain()
|
||||
require.NoError(t, err)
|
||||
|
||||
for i, rule := range chain.Rules {
|
||||
expectedRule := expected.Rules[i]
|
||||
require.Equal(t, expectedRule.Action, rule.Action)
|
||||
require.Equal(t, expectedRule.Any, rule.Any)
|
||||
require.Equal(t, expectedRule.Resource, rule.Resource)
|
||||
require.Equal(t, expectedRule.Status, rule.Status)
|
||||
require.ElementsMatch(t, expectedRule.Condition, rule.Condition)
|
||||
}
|
||||
})
|
||||
}
|
177
iam/policy.go
Normal file
177
iam/policy.go
Normal file
|
@ -0,0 +1,177 @@
|
|||
package iam
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
)
|
||||
|
||||
type (
|
||||
// Policy grammar https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_grammar.html
|
||||
// Currently 'NotPrincipal', 'NotAction' and 'NotResource' are not supported (so cannot be unmarshalled).
|
||||
Policy struct {
|
||||
Version string `json:"Version,omitempty"`
|
||||
ID string `json:"Id,omitempty"`
|
||||
Statement Statements `json:"Statement"`
|
||||
}
|
||||
|
||||
Statements []Statement
|
||||
|
||||
Statement struct {
|
||||
SID string `json:"Sid,omitempty"`
|
||||
Principal Principal `json:"Principal,omitempty"`
|
||||
Effect Effect `json:"Effect"`
|
||||
Action Action `json:"Action"`
|
||||
Resource Resource `json:"Resource"`
|
||||
Conditions Conditions `json:"Condition,omitempty"`
|
||||
}
|
||||
|
||||
Principal map[string][]string
|
||||
|
||||
Effect string
|
||||
|
||||
Action []string
|
||||
|
||||
Resource []string
|
||||
|
||||
Conditions map[string]Condition
|
||||
|
||||
Condition map[string][]string
|
||||
)
|
||||
|
||||
const Wildcard = "*"
|
||||
|
||||
const (
|
||||
AllowEffect Effect = "Allow"
|
||||
DenyEffect Effect = "Deny"
|
||||
)
|
||||
|
||||
func (s *Statements) UnmarshalJSON(data []byte) error {
|
||||
var list []Statement
|
||||
if err := json.Unmarshal(data, &list); err == nil {
|
||||
*s = list
|
||||
return nil
|
||||
}
|
||||
|
||||
var elem Statement
|
||||
if err := json.Unmarshal(data, &elem); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*s = []Statement{elem}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Principal) UnmarshalJSON(data []byte) error {
|
||||
*p = make(Principal)
|
||||
|
||||
var str string
|
||||
|
||||
if err := json.Unmarshal(data, &str); err == nil {
|
||||
if str != Wildcard {
|
||||
return errors.New("invalid IAM string principal")
|
||||
}
|
||||
(*p)[Wildcard] = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
m := make(map[string]interface{})
|
||||
if err := json.Unmarshal(data, &m); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for key, val := range m {
|
||||
element, ok := val.(string)
|
||||
if ok {
|
||||
(*p)[key] = []string{element}
|
||||
continue
|
||||
}
|
||||
|
||||
list, ok := val.([]interface{})
|
||||
if !ok {
|
||||
return errors.New("invalid principal format")
|
||||
}
|
||||
|
||||
resList := make([]string, len(list))
|
||||
for i := range list {
|
||||
val, ok := list[i].(string)
|
||||
if !ok {
|
||||
return errors.New("invalid principal format")
|
||||
}
|
||||
resList[i] = val
|
||||
}
|
||||
|
||||
(*p)[key] = resList
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (a *Action) UnmarshalJSON(data []byte) error {
|
||||
var list []string
|
||||
if err := json.Unmarshal(data, &list); err == nil {
|
||||
*a = list
|
||||
return nil
|
||||
}
|
||||
|
||||
var elem string
|
||||
if err := json.Unmarshal(data, &elem); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*a = []string{elem}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *Resource) UnmarshalJSON(data []byte) error {
|
||||
var list []string
|
||||
if err := json.Unmarshal(data, &list); err == nil {
|
||||
*r = list
|
||||
return nil
|
||||
}
|
||||
|
||||
var elem string
|
||||
if err := json.Unmarshal(data, &elem); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*r = []string{elem}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Condition) UnmarshalJSON(data []byte) error {
|
||||
*c = make(Condition)
|
||||
|
||||
m := make(map[string]interface{})
|
||||
if err := json.Unmarshal(data, &m); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for key, val := range m {
|
||||
element, ok := val.(string)
|
||||
if ok {
|
||||
(*c)[key] = []string{element}
|
||||
continue
|
||||
}
|
||||
|
||||
list, ok := val.([]interface{})
|
||||
if !ok {
|
||||
return errors.New("invalid principal format")
|
||||
}
|
||||
|
||||
resList := make([]string, len(list))
|
||||
for i := range list {
|
||||
val, ok := list[i].(string)
|
||||
if !ok {
|
||||
return errors.New("invalid principal format")
|
||||
}
|
||||
resList[i] = val
|
||||
}
|
||||
|
||||
(*c)[key] = resList
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
173
iam/policy_test.go
Normal file
173
iam/policy_test.go
Normal file
|
@ -0,0 +1,173 @@
|
|||
package iam
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
func TestUnmarshalIAMPolicy(t *testing.T) {
|
||||
t.Run("simple fields", func(t *testing.T) {
|
||||
policy := `{
|
||||
"Version": "2012-10-17",
|
||||
"Id": "PutObjPolicy",
|
||||
"Statement": {
|
||||
"Sid": "DenyObjectsThatAreNotSSEKMS",
|
||||
"Principal": "*",
|
||||
"Effect": "Deny",
|
||||
"Action": "s3:PutObject",
|
||||
"Resource": "arn:aws:s3:::DOC-EXAMPLE-BUCKET/*",
|
||||
"Condition": {
|
||||
"Null": {
|
||||
"s3:x-amz-server-side-encryption-aws-kms-key-id": "true"
|
||||
}
|
||||
}
|
||||
}
|
||||
}`
|
||||
|
||||
expected := Policy{
|
||||
Version: "2012-10-17",
|
||||
ID: "PutObjPolicy",
|
||||
Statement: []Statement{{
|
||||
SID: "DenyObjectsThatAreNotSSEKMS",
|
||||
Principal: map[string][]string{
|
||||
"*": nil,
|
||||
},
|
||||
Effect: DenyEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
Conditions: map[string]Condition{
|
||||
"Null": {
|
||||
"s3:x-amz-server-side-encryption-aws-kms-key-id": {"true"},
|
||||
},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
var p Policy
|
||||
err := json.Unmarshal([]byte(policy), &p)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expected, p)
|
||||
})
|
||||
|
||||
t.Run("complex fields", func(t *testing.T) {
|
||||
policy := `{
|
||||
"Version": "2012-10-17",
|
||||
"Statement": [{
|
||||
"Principal":{
|
||||
"AWS":[
|
||||
"arn:aws:iam::111122223333:user/JohnDoe"
|
||||
]
|
||||
},
|
||||
"Effect": "Allow",
|
||||
"Action": [
|
||||
"s3:PutObject"
|
||||
],
|
||||
"Resource": [
|
||||
"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"
|
||||
],
|
||||
"Condition": {
|
||||
"StringEquals": {
|
||||
"s3:RequestObjectTag/Department": ["Finance"]
|
||||
}
|
||||
}
|
||||
}]
|
||||
}`
|
||||
|
||||
expected := Policy{
|
||||
Version: "2012-10-17",
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{
|
||||
"AWS": {"arn:aws:iam::111122223333:user/JohnDoe"},
|
||||
},
|
||||
Effect: AllowEffect,
|
||||
Action: []string{"s3:PutObject"},
|
||||
Resource: []string{"arn:aws:s3:::DOC-EXAMPLE-BUCKET/*"},
|
||||
Conditions: map[string]Condition{
|
||||
"StringEquals": {
|
||||
"s3:RequestObjectTag/Department": {"Finance"},
|
||||
},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
var p Policy
|
||||
err := json.Unmarshal([]byte(policy), &p)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expected, p)
|
||||
|
||||
raw, err := json.Marshal(expected)
|
||||
require.NoError(t, err)
|
||||
require.JSONEq(t, policy, string(raw))
|
||||
})
|
||||
|
||||
t.Run("check principal AWS", func(t *testing.T) {
|
||||
policy := `{
|
||||
"Statement": [{
|
||||
"Principal":{
|
||||
"AWS":"arn:aws:iam::111122223333:user/JohnDoe"
|
||||
}
|
||||
}]
|
||||
}`
|
||||
|
||||
expected := Policy{
|
||||
Statement: []Statement{{
|
||||
Principal: map[string][]string{
|
||||
"AWS": {"arn:aws:iam::111122223333:user/JohnDoe"},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
var p Policy
|
||||
err := json.Unmarshal([]byte(policy), &p)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expected, p)
|
||||
})
|
||||
|
||||
t.Run("native example", func(t *testing.T) {
|
||||
policy := `
|
||||
{
|
||||
"Version": "xyz",
|
||||
"Statement": [
|
||||
{
|
||||
"Effect": "Allow",
|
||||
"Action": [
|
||||
"native:*",
|
||||
"s3:PutObject",
|
||||
"s3:GetObject"
|
||||
],
|
||||
"Resource": ["*"],
|
||||
"Principal": {"FrostFS": ["did:frostfs:039e3ee771a223361fe7862f532e9511b57baaae3c3e2622682e99d0e660f7671"]},
|
||||
"Condition": {"StringEquals": {"native::object::attribute": "iamuser-admin"}}
|
||||
}
|
||||
]
|
||||
}`
|
||||
|
||||
var p Policy
|
||||
err := json.Unmarshal([]byte(policy), &p)
|
||||
require.NoError(t, err)
|
||||
})
|
||||
|
||||
t.Run("condition array", func(t *testing.T) {
|
||||
policy := `
|
||||
{
|
||||
"Statement": [{
|
||||
"Condition": {"StringLike": {"ec2:InstanceType": ["t1.*", "t2.*", "m3.*"]}}
|
||||
}]
|
||||
}`
|
||||
|
||||
expected := Policy{
|
||||
Statement: []Statement{{
|
||||
Conditions: map[string]Condition{
|
||||
"StringLike": {"ec2:InstanceType": {"t1.*", "t2.*", "m3.*"}},
|
||||
},
|
||||
}},
|
||||
}
|
||||
|
||||
var p Policy
|
||||
err := json.Unmarshal([]byte(policy), &p)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expected, p)
|
||||
})
|
||||
}
|
30
policy.go
30
policy.go
|
@ -1,30 +0,0 @@
|
|||
package policyengine
|
||||
|
||||
//{
|
||||
// "Version": "xyz",
|
||||
// "Policy": [
|
||||
// {
|
||||
// "Effect": "Allow",
|
||||
// "Action": [
|
||||
// "native:*",
|
||||
// "s3:PutObject",
|
||||
// "s3:GetObject"
|
||||
// ],
|
||||
// "Resource": ["*"],
|
||||
// "Principal": ["did:frostfs:039e3ee771a223361fe7862f532e9511b57baaae3c3e2622682e99d0e660f7671"],
|
||||
// "Condition": [ {"StringEquals": {"native::object::attribute", "iamuser-admin"}]
|
||||
// }
|
||||
// ]
|
||||
//}
|
||||
|
||||
// type Policy struct {
|
||||
// Rules []Rule `json:"Policy"`
|
||||
// }
|
||||
|
||||
// type AWSRule struct {
|
||||
// Effect string `json:"Effect"`
|
||||
// Action []string `json:"Action"`
|
||||
// Resource []string `json:"Resource"`
|
||||
// Principal []string `json:"Principal"`
|
||||
// Condition []Condition `json:"Condition"`
|
||||
// }
|
Loading…
Reference in a new issue