133 lines
3.8 KiB
Go
133 lines
3.8 KiB
Go
// Copyright 2017 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package storage
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import (
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"context"
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"cloud.google.com/go/iam"
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"cloud.google.com/go/iam/apiv1/iampb"
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"cloud.google.com/go/internal/trace"
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raw "google.golang.org/api/storage/v1"
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"google.golang.org/genproto/googleapis/type/expr"
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)
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// IAM provides access to IAM access control for the bucket.
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func (b *BucketHandle) IAM() *iam.Handle {
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return iam.InternalNewHandleClient(&iamClient{
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userProject: b.userProject,
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retry: b.retry,
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client: b.c,
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}, b.name)
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}
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// iamClient implements the iam.client interface.
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type iamClient struct {
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userProject string
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retry *retryConfig
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client *Client
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}
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func (c *iamClient) Get(ctx context.Context, resource string) (p *iampb.Policy, err error) {
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return c.GetWithVersion(ctx, resource, 1)
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}
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func (c *iamClient) GetWithVersion(ctx context.Context, resource string, requestedPolicyVersion int32) (p *iampb.Policy, err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Get")
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defer func() { trace.EndSpan(ctx, err) }()
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o := makeStorageOpts(true, c.retry, c.userProject)
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return c.client.tc.GetIamPolicy(ctx, resource, requestedPolicyVersion, o...)
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}
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func (c *iamClient) Set(ctx context.Context, resource string, p *iampb.Policy) (err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Set")
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defer func() { trace.EndSpan(ctx, err) }()
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isIdempotent := len(p.Etag) > 0
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o := makeStorageOpts(isIdempotent, c.retry, c.userProject)
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return c.client.tc.SetIamPolicy(ctx, resource, p, o...)
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}
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func (c *iamClient) Test(ctx context.Context, resource string, perms []string) (permissions []string, err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Test")
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defer func() { trace.EndSpan(ctx, err) }()
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o := makeStorageOpts(true, c.retry, c.userProject)
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return c.client.tc.TestIamPermissions(ctx, resource, perms, o...)
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}
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func iamToStoragePolicy(ip *iampb.Policy) *raw.Policy {
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return &raw.Policy{
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Bindings: iamToStorageBindings(ip.Bindings),
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Etag: string(ip.Etag),
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Version: int64(ip.Version),
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}
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}
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func iamToStorageBindings(ibs []*iampb.Binding) []*raw.PolicyBindings {
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var rbs []*raw.PolicyBindings
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for _, ib := range ibs {
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rbs = append(rbs, &raw.PolicyBindings{
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Role: ib.Role,
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Members: ib.Members,
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Condition: iamToStorageCondition(ib.Condition),
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})
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}
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return rbs
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}
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func iamToStorageCondition(exprpb *expr.Expr) *raw.Expr {
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if exprpb == nil {
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return nil
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}
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return &raw.Expr{
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Expression: exprpb.Expression,
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Description: exprpb.Description,
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Location: exprpb.Location,
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Title: exprpb.Title,
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}
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}
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func iamFromStoragePolicy(rp *raw.Policy) *iampb.Policy {
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return &iampb.Policy{
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Bindings: iamFromStorageBindings(rp.Bindings),
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Etag: []byte(rp.Etag),
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}
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}
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func iamFromStorageBindings(rbs []*raw.PolicyBindings) []*iampb.Binding {
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var ibs []*iampb.Binding
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for _, rb := range rbs {
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ibs = append(ibs, &iampb.Binding{
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Role: rb.Role,
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Members: rb.Members,
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Condition: iamFromStorageCondition(rb.Condition),
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})
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}
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return ibs
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}
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func iamFromStorageCondition(rawexpr *raw.Expr) *expr.Expr {
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if rawexpr == nil {
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return nil
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}
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return &expr.Expr{
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Expression: rawexpr.Expression,
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Description: rawexpr.Description,
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Location: rawexpr.Location,
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Title: rawexpr.Title,
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}
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}
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