新增

 package aliyun
 package aliyun
 
 
-import (
-	"github.com/astaxie/beego"
-)
-
 /*
 /*
 AK  AccessKey 完全访问权限
 AK  AccessKey 完全访问权限
 STS (Security Token Service)  临时访问控制
 STS (Security Token Service)  临时访问控制
 */
 */
-
-var (
-	Endpoint   string = beego.AppConfig.String("end_point")
-	BucketName string = beego.AppConfig.String("bucket_name")
-	//BucketNameCdn string = beego.AppConfig.String("bucket_name_cdn")
-	//EndpointCdn   string = beego.AppConfig.String("end_point_cdn")
-)
-
-//type OssSts struct{
-//
-//}
-
-//func NewSTS(){
-//	client,_ :=oos.NewClientWithAccessKey(RegionID,AccessKeyID,AccessKeySecret)
-//	client.DoAction()
-//}
+type ossConfig struct {
+	AccessID    string
+	AccessKey   string
+	RoleAcs     string
+	EndPoint    string
+	BuckName    string
+	CallbackUrl string
+}

+package oss

+package oss

+package oss
+
+import (
+	"crypto/hmac"
+	"crypto/sha1"
+	"crypto/tls"
+	"encoding/base64"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+type AliyunStsClient struct {
+	ChildAccountKeyId  string
+	ChildAccountSecret string
+	RoleAcs            string
+}
+
+func NewStsClient(key, secret, roleAcs string) *AliyunStsClient {
+	return &AliyunStsClient{
+		ChildAccountKeyId:  key,
+		ChildAccountSecret: secret,
+		RoleAcs:            roleAcs,
+	}
+}
+
+func (cli *AliyunStsClient) GenerateSignatureUrl(sessionName, durationSeconds string) (string, error) {
+	assumeUrl := "SignatureVersion=1.0"
+	assumeUrl += "&Format=JSON"
+	assumeUrl += "&Timestamp=" + url.QueryEscape(time.Now().UTC().Format("2006-01-02T15:04:05Z"))
+	assumeUrl += "&RoleArn=" + url.QueryEscape(cli.RoleAcs)
+	assumeUrl += "&RoleSessionName=" + sessionName
+	assumeUrl += "&AccessKeyId=" + cli.ChildAccountKeyId
+	assumeUrl += "&SignatureMethod=HMAC-SHA1"
+	assumeUrl += "&Version=2015-04-01"
+	assumeUrl += "&Action=AssumeRole"
+	assumeUrl += "&SignatureNonce=" + "TODO"
+	assumeUrl += "&DurationSeconds=" + durationSeconds
+
+	// 解析成V type
+	signToString, err := url.ParseQuery(assumeUrl)
+	if err != nil {
+		return "", err
+	}
+
+	// URL顺序化
+	result := signToString.Encode()
+
+	// 拼接
+	StringToSign := "GET" + "&" + "%2F" + "&" + url.QueryEscape(result)
+
+	// HMAC
+	hashSign := hmac.New(sha1.New, []byte(cli.ChildAccountSecret+"&"))
+	hashSign.Write([]byte(StringToSign))
+
+	// 生成signature
+	signature := base64.StdEncoding.EncodeToString(hashSign.Sum(nil))
+
+	// Url 添加signature
+	assumeUrl = "https://sts.aliyuncs.com/?" + assumeUrl + "&Signature=" + url.QueryEscape(signature)
+
+	return assumeUrl, nil
+}
+
+// 请求构造好的URL,获得授权信息
+// 安全认证 HTTPS
+func (cli *AliyunStsClient) GetStsResponse(url string) ([]byte, error) {
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	client := &http.Client{Transport: tr}
+
+	resp, err := client.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+
+	return body, err
+}

+package oss
+
+import (
+	"crypto"
+	"crypto/md5"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+
+	"github.com/astaxie/beego"
+)
+
+func ValidSignure(r *http.Request, requestBody []byte) bool {
+	if r.Method != "POST" {
+		beego.Error("request.Method!=post")
+		return false
+	}
+	// Get PublicKey bytes
+	bytePublicKey, err := getPublicKey(r)
+	if err != nil {
+		beego.Error(err)
+		return false
+	}
+	// Get Authorization bytes : decode from Base64String
+	byteAuthorization, err := getAuthorization(r)
+	if err != nil {
+		beego.Error(err)
+		return false
+	}
+	// Get MD5 bytes from Newly Constructed Authrization String.
+	byteMD5, err := getMD5FromNewAuthString(r, requestBody)
+	if err != nil {
+		beego.Error(err)
+		return false
+	}
+
+	// VerifySignature and response to client
+	if verifySignature(bytePublicKey, byteMD5, byteAuthorization) {
+		return true
+	} else {
+		beego.Error("verifySignature return false")
+		return false
+	}
+
+	return false
+}
+
+func handlerRequest(w http.ResponseWriter, r *http.Request) {
+	if r.Method == "POST" {
+		fmt.Println("\nHandle Post Request...")
+
+		// Get PublicKey bytes
+		bytePublicKey, err := getPublicKey(r)
+		if err != nil {
+			responseFailed(w)
+			return
+		}
+		beego.Debug("bytePublicKey:", string(bytePublicKey))
+		// Get Authorization bytes : decode from Base64String
+		byteAuthorization, err := getAuthorization(r)
+		if err != nil {
+			responseFailed(w)
+			return
+		}
+		beego.Debug("byteAuthorization:", string(byteAuthorization))
+		// Get MD5 bytes from Newly Constructed Authrization String.
+		byteMD5, err := getMD5FromNewAuthString(r, []byte{})
+		if err != nil {
+			responseFailed(w)
+			return
+		}
+
+		// VerifySignature and response to client
+		if verifySignature(bytePublicKey, byteMD5, byteAuthorization) {
+
+			// Do something you want accoding to callback_body ...
+
+			// response OK : 200
+			responseSuccess(w)
+		} else {
+			// response FAILED : 400
+			responseFailed(w)
+		}
+	}
+}
+
+// getPublicKey : Get PublicKey bytes from Request.URL
+func getPublicKey(r *http.Request) ([]byte, error) {
+	var bytePublicKey []byte
+
+	// get PublicKey URL
+	publicKeyURLBase64 := r.Header.Get("x-oss-pub-key-url")
+	if publicKeyURLBase64 == "" {
+		fmt.Println("GetPublicKey from Request header failed :  No x-oss-pub-key-url field. ")
+		return bytePublicKey, errors.New("no x-oss-pub-key-url field in Request header ")
+	}
+	publicKeyURL, _ := base64.StdEncoding.DecodeString(publicKeyURLBase64)
+	// get PublicKey Content from URL
+	responsePublicKeyURL, err := http.Get(string(publicKeyURL))
+	if err != nil {
+		fmt.Printf("Get PublicKey Content from URL failed : %s \n", err.Error())
+		return bytePublicKey, err
+	}
+	defer responsePublicKeyURL.Body.Close()
+	bytePublicKey, err = ioutil.ReadAll(responsePublicKeyURL.Body)
+	if err != nil {
+		fmt.Printf("Read PublicKey Content from URL failed : %s \n", err.Error())
+		return bytePublicKey, err
+	}
+
+	return bytePublicKey, nil
+}
+
+// getAuthorization : decode from Base64String
+func getAuthorization(r *http.Request) ([]byte, error) {
+	var byteAuthorization []byte
+
+	strAuthorizationBase64 := r.Header.Get("authorization")
+	if strAuthorizationBase64 == "" {
+		fmt.Println("Failed to get authorization field from request header. ")
+		return byteAuthorization, errors.New("no authorization field in Request header")
+	}
+	byteAuthorization, _ = base64.StdEncoding.DecodeString(strAuthorizationBase64)
+
+	return byteAuthorization, nil
+}
+
+// getMD5FromNewAuthString : Get MD5 bytes from Newly Constructed Authrization String.
+func getMD5FromNewAuthString(r *http.Request, requestBody []byte) ([]byte, error) {
+	var byteMD5 []byte
+	// Construct the New Auth String from URI+Query+Body
+	_, err := ioutil.ReadAll(r.Body)
+	r.Body.Close()
+	if err != nil {
+		fmt.Printf("Read Request Body failed : %s \n", err.Error())
+		return byteMD5, err
+	}
+	//strCallbackBody := string(bodyContent)
+	strCallbackBody := string(requestBody)
+	strURLPathDecode, errUnescape := unescapePath(r.URL.Path, encodePathSegment)
+	if errUnescape != nil {
+		fmt.Printf("url.PathUnescape failed : URL.Path=%s, error=%s \n", r.URL.Path, err.Error())
+		return byteMD5, errUnescape
+	}
+
+	// Generate New Auth String prepare for MD5
+	strAuth := ""
+	if r.URL.RawQuery == "" {
+		strAuth = fmt.Sprintf("%s\n%s", strURLPathDecode, strCallbackBody)
+	} else {
+		strAuth = fmt.Sprintf("%s?%s\n%s", strURLPathDecode, r.URL.RawQuery, strCallbackBody)
+	}
+	// Generate MD5 from the New Auth String
+	md5Ctx := md5.New()
+	md5Ctx.Write([]byte(strAuth))
+	byteMD5 = md5Ctx.Sum(nil)
+
+	return byteMD5, nil
+}
+
+//  verifySignature
+func verifySignature(bytePublicKey []byte, byteMd5 []byte, authorization []byte) bool {
+	pubBlock, _ := pem.Decode(bytePublicKey)
+	if pubBlock == nil {
+		beego.Error("Failed to parse PEM block containing the public key")
+		return false
+	}
+	pubInterface, err := x509.ParsePKIXPublicKey(pubBlock.Bytes)
+	if (pubInterface == nil) || (err != nil) {
+		beego.Error(fmt.Sprintf("x509.ParsePKIXPublicKey(publicKey) failed : %s \n", err.Error()))
+		return false
+	}
+	pub := pubInterface.(*rsa.PublicKey)
+
+	errorVerifyPKCS1v15 := rsa.VerifyPKCS1v15(pub, crypto.MD5, byteMd5, authorization)
+	if errorVerifyPKCS1v15 != nil {
+		beego.Error(fmt.Sprintf("Signature Verification is Failed : %s \n", errorVerifyPKCS1v15.Error()))
+		return false
+	}
+
+	fmt.Printf("Signature Verification is Successful. \n")
+	return true
+}
+
+// responseSuccess : Response 200 to client
+func responseSuccess(w http.ResponseWriter) {
+	strResponseBody := "{\"Status\":\"OK\"}"
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Content-Length", strconv.Itoa(len(strResponseBody)))
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(strResponseBody))
+	fmt.Printf("\nPost Response : 200 OK . \n")
+}
+
+// responseFailed : Response 400 to client
+func responseFailed(w http.ResponseWriter) {
+	w.WriteHeader(http.StatusBadRequest)
+	fmt.Printf("\nPost Response : 400 BAD . \n")
+}
+
+func printByteArray(byteArrary []byte, arrName string) {
+	fmt.Printf("printByteArray :  ArrayName=%s, ArrayLength=%d \n", arrName, len(byteArrary))
+	for i := 0; i < len(byteArrary); i++ {
+		fmt.Printf("%02x", byteArrary[i])
+	}
+	fmt.Printf("printByteArray :  End . \n")
+}
+
+// EscapeError Escape Error
+type EscapeError string
+
+func (e EscapeError) Error() string {
+	return "invalid URL escape " + strconv.Quote(string(e))
+}
+
+// InvalidHostError Invalid Host Error
+type InvalidHostError string
+
+func (e InvalidHostError) Error() string {
+	return "invalid character " + strconv.Quote(string(e)) + " in host name"
+}
+
+type encoding int
+
+const (
+	encodePath encoding = 1 + iota
+	encodePathSegment
+	encodeHost
+	encodeZone
+	encodeUserPassword
+	encodeQueryComponent
+	encodeFragment
+)
+
+// unescapePath : unescapes a string; the mode specifies, which section of the URL string is being unescaped.
+func unescapePath(s string, mode encoding) (string, error) {
+
+	// Count %, check that they're well-formed.
+	mode = encodePathSegment
+	n := 0
+	hasPlus := false
+	for i := 0; i < len(s); {
+		switch s[i] {
+		case '%':
+			n++
+			if i+2 >= len(s) || !ishex(s[i+1]) || !ishex(s[i+2]) {
+				s = s[i:]
+				if len(s) > 3 {
+					s = s[:3]
+				}
+				return "", EscapeError(s)
+			}
+			// Per https://tools.ietf.org/html/rfc3986#page-21
+			// in the host component %-encoding can only be used
+			// for non-ASCII bytes.
+			// But https://tools.ietf.org/html/rfc6874#section-2
+			// introduces %25 being allowed to escape a percent sign
+			// in IPv6 scoped-address literals. Yay.
+			if mode == encodeHost && unhex(s[i+1]) < 8 && s[i:i+3] != "%25" {
+				return "", EscapeError(s[i : i+3])
+			}
+			if mode == encodeZone {
+				// RFC 6874 says basically "anything goes" for zone identifiers
+				// and that even non-ASCII can be redundantly escaped,
+				// but it seems prudent to restrict %-escaped bytes here to those
+				// that are valid host name bytes in their unescaped form.
+				// That is, you can use escaping in the zone identifier but not
+				// to introduce bytes you couldn't just write directly.
+				// But Windows puts spaces here! Yay.
+				v := unhex(s[i+1])<<4 | unhex(s[i+2])
+				if s[i:i+3] != "%25" && v != ' ' && shouldEscape(v, encodeHost) {
+					return "", EscapeError(s[i : i+3])
+				}
+			}
+			i += 3
+		case '+':
+			hasPlus = mode == encodeQueryComponent
+			i++
+		default:
+			if (mode == encodeHost || mode == encodeZone) && s[i] < 0x80 && shouldEscape(s[i], mode) {
+				return "", InvalidHostError(s[i : i+1])
+			}
+			i++
+		}
+	}
+
+	if n == 0 && !hasPlus {
+		return s, nil
+	}
+
+	t := make([]byte, len(s)-2*n)
+	j := 0
+	for i := 0; i < len(s); {
+		switch s[i] {
+		case '%':
+			t[j] = unhex(s[i+1])<<4 | unhex(s[i+2])
+			j++
+			i += 3
+		case '+':
+			if mode == encodeQueryComponent {
+				t[j] = ' '
+			} else {
+				t[j] = '+'
+			}
+			j++
+			i++
+		default:
+			t[j] = s[i]
+			j++
+			i++
+		}
+	}
+	return string(t), nil
+}
+
+// Please be informed that for now shouldEscape does not check all
+// reserved characters correctly. See golang.org/issue/5684.
+func shouldEscape(c byte, mode encoding) bool {
+	// §2.3 Unreserved characters (alphanum)
+	if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
+		return false
+	}
+
+	if mode == encodeHost || mode == encodeZone {
+		// §3.2.2 Host allows
+		//	sub-delims = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "="
+		// as part of reg-name.
+		// We add : because we include :port as part of host.
+		// We add [ ] because we include [ipv6]:port as part of host.
+		// We add < > because they're the only characters left that
+		// we could possibly allow, and Parse will reject them if we
+		// escape them (because hosts can't use %-encoding for
+		// ASCII bytes).
+		switch c {
+		case '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=', ':', '[', ']', '<', '>', '"':
+			return false
+		}
+	}
+
+	switch c {
+	case '-', '_', '.', '~': // §2.3 Unreserved characters (mark)
+		return false
+
+	case '$', '&', '+', ',', '/', ':', ';', '=', '?', '@': // §2.2 Reserved characters (reserved)
+		// Different sections of the URL allow a few of
+		// the reserved characters to appear unescaped.
+		switch mode {
+		case encodePath: // §3.3
+			// The RFC allows : @ & = + $ but saves / ; , for assigning
+			// meaning to individual path segments. This package
+			// only manipulates the path as a whole, so we allow those
+			// last three as well. That leaves only ? to escape.
+			return c == '?'
+
+		case encodePathSegment: // §3.3
+			// The RFC allows : @ & = + $ but saves / ; , for assigning
+			// meaning to individual path segments.
+			return c == '/' || c == ';' || c == ',' || c == '?'
+
+		case encodeUserPassword: // §3.2.1
+			// The RFC allows ';', ':', '&', '=', '+', '$', and ',' in
+			// userinfo, so we must escape only '@', '/', and '?'.
+			// The parsing of userinfo treats ':' as special so we must escape
+			// that too.
+			return c == '@' || c == '/' || c == '?' || c == ':'
+
+		case encodeQueryComponent: // §3.4
+			// The RFC reserves (so we must escape) everything.
+			return true
+
+		case encodeFragment: // §4.1
+			// The RFC text is silent but the grammar allows
+			// everything, so escape nothing.
+			return false
+		}
+	}
+
+	// Everything else must be escaped.
+	return true
+}
+
+func ishex(c byte) bool {
+	switch {
+	case '0' <= c && c <= '9':
+		return true
+	case 'a' <= c && c <= 'f':
+		return true
+	case 'A' <= c && c <= 'F':
+		return true
+	}
+	return false
+}
+
+func unhex(c byte) byte {
+	switch {
+	case '0' <= c && c <= '9':
+		return c - '0'
+	case 'a' <= c && c <= 'f':
+		return c - 'a' + 10
+	case 'A' <= c && c <= 'F':
+		return c - 'A' + 10
+	}
+	return 0
+}