106 lines
2.7 KiB
Go
106 lines
2.7 KiB
Go
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package oss
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import (
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"github.com/denverdino/aliyungo/util"
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//"log"
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"net/http"
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"net/url"
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"sort"
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"strings"
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)
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const HeaderOSSPrefix = "x-oss-"
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var ossParamsToSign = map[string]bool{
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"acl": true,
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"delete": true,
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"location": true,
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"logging": true,
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"notification": true,
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"partNumber": true,
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"policy": true,
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"requestPayment": true,
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"torrent": true,
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"uploadId": true,
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"uploads": true,
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"versionId": true,
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"versioning": true,
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"versions": true,
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"response-content-type": true,
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"response-content-language": true,
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"response-expires": true,
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"response-cache-control": true,
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"response-content-disposition": true,
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"response-content-encoding": true,
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}
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func (client *Client) signRequest(request *request) {
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query := request.params
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urlSignature := query.Get("OSSAccessKeyId") != ""
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headers := request.headers
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contentMd5 := headers.Get("Content-Md5")
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contentType := headers.Get("Content-Type")
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date := ""
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if urlSignature {
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date = query.Get("Expires")
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} else {
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date = headers.Get("Date")
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}
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resource := request.path
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if request.bucket != "" {
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resource = "/" + request.bucket + request.path
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}
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params := make(url.Values)
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for k, v := range query {
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if ossParamsToSign[k] {
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params[k] = v
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}
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}
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if len(params) > 0 {
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resource = resource + "?" + util.Encode(params)
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}
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canonicalizedResource := resource
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_, canonicalizedHeader := canonicalizeHeader(headers)
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stringToSign := request.method + "\n" + contentMd5 + "\n" + contentType + "\n" + date + "\n" + canonicalizedHeader + canonicalizedResource
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//log.Println("stringToSign: ", stringToSign)
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signature := util.CreateSignature(stringToSign, client.AccessKeySecret)
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if query.Get("OSSAccessKeyId") != "" {
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query.Set("Signature", signature)
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} else {
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headers.Set("Authorization", "OSS "+client.AccessKeyId+":"+signature)
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}
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}
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//Have to break the abstraction to append keys with lower case.
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func canonicalizeHeader(headers http.Header) (newHeaders http.Header, result string) {
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var canonicalizedHeaders []string
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newHeaders = http.Header{}
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for k, v := range headers {
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if lower := strings.ToLower(k); strings.HasPrefix(lower, HeaderOSSPrefix) {
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newHeaders[lower] = v
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canonicalizedHeaders = append(canonicalizedHeaders, lower)
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} else {
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newHeaders[k] = v
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}
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}
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sort.Strings(canonicalizedHeaders)
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var canonicalizedHeader string
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for _, k := range canonicalizedHeaders {
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canonicalizedHeader += k + ":" + headers.Get(k) + "\n"
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}
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return newHeaders, canonicalizedHeader
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}
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