distribution/vendor/github.com/Azure/azure-sdk-for-go/storage/queuesasuri.go
Yu Wang 62797237b9 closes #2496 and #2552
Update Azure SDK with release v16.2.1
Update Azure autorest SDK with release v10.8.1

Signed-off-by: Yu Wang <yuwa@microsoft.com>
2018-06-08 16:53:02 -07:00

146 lines
4.3 KiB
Go

package storage
// Copyright 2017 Microsoft Corporation
//
// 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.
import (
"errors"
"fmt"
"net/url"
"strings"
"time"
)
// QueueSASOptions are options to construct a blob SAS
// URI.
// See https://docs.microsoft.com/en-us/rest/api/storageservices/constructing-a-service-sas
type QueueSASOptions struct {
QueueSASPermissions
SASOptions
}
// QueueSASPermissions includes the available permissions for
// a queue SAS URI.
type QueueSASPermissions struct {
Read bool
Add bool
Update bool
Process bool
}
func (q QueueSASPermissions) buildString() string {
permissions := ""
if q.Read {
permissions += "r"
}
if q.Add {
permissions += "a"
}
if q.Update {
permissions += "u"
}
if q.Process {
permissions += "p"
}
return permissions
}
// GetSASURI creates an URL to the specified queue which contains the Shared
// Access Signature with specified permissions and expiration time.
//
// See https://docs.microsoft.com/en-us/rest/api/storageservices/constructing-a-service-sas
func (q *Queue) GetSASURI(options QueueSASOptions) (string, error) {
canonicalizedResource, err := q.qsc.client.buildCanonicalizedResource(q.buildPath(), q.qsc.auth, true)
if err != nil {
return "", err
}
// "The canonicalizedresouce portion of the string is a canonical path to the signed resource.
// It must include the service name (blob, table, queue or file) for version 2015-02-21 or
// later, the storage account name, and the resource name, and must be URL-decoded.
// -- https://msdn.microsoft.com/en-us/library/azure/dn140255.aspx
// We need to replace + with %2b first to avoid being treated as a space (which is correct for query strings, but not the path component).
canonicalizedResource = strings.Replace(canonicalizedResource, "+", "%2b", -1)
canonicalizedResource, err = url.QueryUnescape(canonicalizedResource)
if err != nil {
return "", err
}
signedStart := ""
if options.Start != (time.Time{}) {
signedStart = options.Start.UTC().Format(time.RFC3339)
}
signedExpiry := options.Expiry.UTC().Format(time.RFC3339)
protocols := "https,http"
if options.UseHTTPS {
protocols = "https"
}
permissions := options.QueueSASPermissions.buildString()
stringToSign, err := queueSASStringToSign(q.qsc.client.apiVersion, canonicalizedResource, signedStart, signedExpiry, options.IP, permissions, protocols, options.Identifier)
if err != nil {
return "", err
}
sig := q.qsc.client.computeHmac256(stringToSign)
sasParams := url.Values{
"sv": {q.qsc.client.apiVersion},
"se": {signedExpiry},
"sp": {permissions},
"sig": {sig},
}
if q.qsc.client.apiVersion >= "2015-04-05" {
sasParams.Add("spr", protocols)
addQueryParameter(sasParams, "sip", options.IP)
}
uri := q.qsc.client.getEndpoint(queueServiceName, q.buildPath(), nil)
sasURL, err := url.Parse(uri)
if err != nil {
return "", err
}
sasURL.RawQuery = sasParams.Encode()
return sasURL.String(), nil
}
func queueSASStringToSign(signedVersion, canonicalizedResource, signedStart, signedExpiry, signedIP, signedPermissions, protocols, signedIdentifier string) (string, error) {
if signedVersion >= "2015-02-21" {
canonicalizedResource = "/queue" + canonicalizedResource
}
// https://msdn.microsoft.com/en-us/library/azure/dn140255.aspx#Anchor_12
if signedVersion >= "2015-04-05" {
return fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s",
signedPermissions,
signedStart,
signedExpiry,
canonicalizedResource,
signedIdentifier,
signedIP,
protocols,
signedVersion), nil
}
// reference: http://msdn.microsoft.com/en-us/library/azure/dn140255.aspx
if signedVersion >= "2013-08-15" {
return fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s", signedPermissions, signedStart, signedExpiry, canonicalizedResource, signedIdentifier, signedVersion), nil
}
return "", errors.New("storage: not implemented SAS for versions earlier than 2013-08-15")
}