Repository navigation
Expand file tree
/
Copy pathbucket-policy.go
More file actions
184 lines (156 loc) · 4.98 KB
/
Copy pathbucket-policy.go
File metadata and controls
184 lines (156 loc) · 4.98 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/*
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"encoding/json"
"net/http"
"net/url"
"strconv"
"strings"
"time"
jsoniter "github.com/json-iterator/go"
miniogopolicy "github.com/minio/minio-go/v6/pkg/policy"
xhttp "github.com/minio/minio/cmd/http"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/bucket/policy"
"github.com/minio/minio/pkg/handlers"
)
// PolicySys - policy subsystem.
type PolicySys struct{}
// Get returns stored bucket policy
func (sys *PolicySys) Get(bucket string) (*policy.Policy, error) {
return globalBucketMetadataSys.GetPolicyConfig(bucket)
}
// IsAllowed - checks given policy args is allowed to continue the Rest API.
func (sys *PolicySys) IsAllowed(args policy.Args) bool {
p, err := sys.Get(args.BucketName)
if err == nil {
return p.IsAllowed(args)
}
// Log unhandled errors.
if _, ok := err.(BucketPolicyNotFound); !ok {
logger.LogIf(GlobalContext, err)
}
// As policy is not available for given bucket name, returns IsOwner i.e.
// operation is allowed only for owner.
return args.IsOwner
}
// NewPolicySys - creates new policy system.
func NewPolicySys() *PolicySys {
return &PolicySys{}
}
func getConditionValues(r *http.Request, lc string, username string, claims map[string]interface{}) map[string][]string {
currTime := UTCNow()
principalType := "Anonymous"
if username != "" {
principalType = "User"
}
args := map[string][]string{
"CurrentTime": {currTime.Format(time.RFC3339)},
"EpochTime": {strconv.FormatInt(currTime.Unix(), 10)},
"SecureTransport": {strconv.FormatBool(r.TLS != nil)},
"SourceIp": {handlers.GetSourceIP(r)},
"UserAgent": {r.UserAgent()},
"Referer": {r.Referer()},
"principaltype": {principalType},
"userid": {username},
"username": {username},
}
if lc != "" {
args["LocationConstraint"] = []string{lc}
}
cloneHeader := r.Header.Clone()
for _, objLock := range []string{
xhttp.AmzObjectLockMode,
xhttp.AmzObjectLockLegalHold,
xhttp.AmzObjectLockRetainUntilDate,
} {
if values, ok := cloneHeader[objLock]; ok {
args[strings.TrimPrefix(objLock, "X-Amz-")] = values
}
cloneHeader.Del(objLock)
}
for key, values := range cloneHeader {
if existingValues, found := args[key]; found {
args[key] = append(existingValues, values...)
} else {
args[key] = values
}
}
var cloneURLValues = url.Values{}
for k, v := range r.URL.Query() {
cloneURLValues[k] = v
}
for _, objLock := range []string{
xhttp.AmzObjectLockMode,
xhttp.AmzObjectLockLegalHold,
xhttp.AmzObjectLockRetainUntilDate,
} {
if values, ok := cloneURLValues[objLock]; ok {
args[strings.TrimPrefix(objLock, "X-Amz-")] = values
}
cloneURLValues.Del(objLock)
}
for key, values := range cloneURLValues {
if existingValues, found := args[key]; found {
args[key] = append(existingValues, values...)
} else {
args[key] = values
}
}
// JWT specific values
for k, v := range claims {
vStr, ok := v.(string)
if ok {
args[k] = []string{vStr}
}
}
return args
}
// PolicyToBucketAccessPolicy - converts policy.Policy to minio-go/policy.BucketAccessPolicy.
func PolicyToBucketAccessPolicy(bucketPolicy *policy.Policy) (*miniogopolicy.BucketAccessPolicy, error) {
// Return empty BucketAccessPolicy for empty bucket policy.
if bucketPolicy == nil {
return &miniogopolicy.BucketAccessPolicy{Version: policy.DefaultVersion}, nil
}
data, err := json.Marshal(bucketPolicy)
if err != nil {
// This should not happen because bucketPolicy is valid to convert to JSON data.
return nil, err
}
var policyInfo miniogopolicy.BucketAccessPolicy
var json = jsoniter.ConfigCompatibleWithStandardLibrary
if err = json.Unmarshal(data, &policyInfo); err != nil {
// This should not happen because data is valid to JSON data.
return nil, err
}
return &policyInfo, nil
}
// BucketAccessPolicyToPolicy - converts minio-go/policy.BucketAccessPolicy to policy.Policy.
func BucketAccessPolicyToPolicy(policyInfo *miniogopolicy.BucketAccessPolicy) (*policy.Policy, error) {
data, err := json.Marshal(policyInfo)
if err != nil {
// This should not happen because policyInfo is valid to convert to JSON data.
return nil, err
}
var bucketPolicy policy.Policy
var json = jsoniter.ConfigCompatibleWithStandardLibrary
if err = json.Unmarshal(data, &bucketPolicy); err != nil {
// This should not happen because data is valid to JSON data.
return nil, err
}
return &bucketPolicy, nil
}