1 files changed, 0 insertions, 351 deletions
diff --git a/vendor/github.com/minio/minio-go/v7/pkg/signer/request-signature-v4.go b/vendor/github.com/minio/minio-go/v7/pkg/signer/request-signature-v4.go
deleted file mode 100644
index ffd251451..000000000
--- a/vendor/github.com/minio/minio-go/v7/pkg/signer/request-signature-v4.go
+++ /dev/null
@@ -1,351 +0,0 @@
-/*
- * MinIO Go Library for Amazon S3 Compatible Cloud Storage
- * Copyright 2015-2017 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 signer
-
-import (
-	"bytes"
-	"encoding/hex"
-	"net/http"
-	"sort"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/minio/minio-go/v7/pkg/s3utils"
-)
-
-// Signature and API related constants.
-const (
-	signV4Algorithm   = "AWS4-HMAC-SHA256"
-	iso8601DateFormat = "20060102T150405Z"
-	yyyymmdd          = "20060102"
-)
-
-// Different service types
-const (
-	ServiceTypeS3  = "s3"
-	ServiceTypeSTS = "sts"
-)
-
-// Excerpts from @lsegal -
-// https:/github.com/aws/aws-sdk-js/issues/659#issuecomment-120477258.
-//
-// * User-Agent
-// This is ignored from signing because signing this causes problems with generating pre-signed
-// URLs (that are executed by other agents) or when customers pass requests through proxies, which
-// may modify the user-agent.
-//
-// * Authorization
-// Is skipped for obvious reasons.
-//
-// * Accept-Encoding
-// Some S3 servers like Hitachi Content Platform do not honor this header for signature
-// calculation.
-var v4IgnoredHeaders = map[string]bool{
-	"Accept-Encoding": true,
-	"Authorization":   true,
-	"User-Agent":      true,
-}
-
-// getSigningKey hmac seed to calculate final signature.
-func getSigningKey(secret, loc string, t time.Time, serviceType string) []byte {
-	date := sumHMAC([]byte("AWS4"+secret), []byte(t.Format(yyyymmdd)))
-	location := sumHMAC(date, []byte(loc))
-	service := sumHMAC(location, []byte(serviceType))
-	signingKey := sumHMAC(service, []byte("aws4_request"))
-	return signingKey
-}
-
-// getSignature final signature in hexadecimal form.
-func getSignature(signingKey []byte, stringToSign string) string {
-	return hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))
-}
-
-// getScope generate a string of a specific date, an AWS region, and a
-// service.
-func getScope(location string, t time.Time, serviceType string) string {
-	scope := strings.Join([]string{
-		t.Format(yyyymmdd),
-		location,
-		serviceType,
-		"aws4_request",
-	}, "/")
-	return scope
-}
-
-// GetCredential generate a credential string.
-func GetCredential(accessKeyID, location string, t time.Time, serviceType string) string {
-	scope := getScope(location, t, serviceType)
-	return accessKeyID + "/" + scope
-}
-
-// getHashedPayload get the hexadecimal value of the SHA256 hash of
-// the request payload.
-func getHashedPayload(req http.Request) string {
-	hashedPayload := req.Header.Get("X-Amz-Content-Sha256")
-	if hashedPayload == "" {
-		// Presign does not have a payload, use S3 recommended value.
-		hashedPayload = unsignedPayload
-	}
-	return hashedPayload
-}
-
-// getCanonicalHeaders generate a list of request headers for
-// signature.
-func getCanonicalHeaders(req http.Request, ignoredHeaders map[string]bool) string {
-	var headers []string
-	vals := make(map[string][]string)
-	for k, vv := range req.Header {
-		if _, ok := ignoredHeaders[http.CanonicalHeaderKey(k)]; ok {
-			continue // ignored header
-		}
-		headers = append(headers, strings.ToLower(k))
-		vals[strings.ToLower(k)] = vv
-	}
-	if !headerExists("host", headers) {
-		headers = append(headers, "host")
-	}
-	sort.Strings(headers)
-
-	var buf bytes.Buffer
-	// Save all the headers in canonical form <header>:<value> newline
-	// separated for each header.
-	for _, k := range headers {
-		buf.WriteString(k)
-		buf.WriteByte(':')
-		switch {
-		case k == "host":
-			buf.WriteString(getHostAddr(&req))
-			buf.WriteByte('\n')
-		default:
-			for idx, v := range vals[k] {
-				if idx > 0 {
-					buf.WriteByte(',')
-				}
-				buf.WriteString(signV4TrimAll(v))
-			}
-			buf.WriteByte('\n')
-		}
-	}
-	return buf.String()
-}
-
-func headerExists(key string, headers []string) bool {
-	for _, k := range headers {
-		if k == key {
-			return true
-		}
-	}
-	return false
-}
-
-// getSignedHeaders generate all signed request headers.
-// i.e lexically sorted, semicolon-separated list of lowercase
-// request header names.
-func getSignedHeaders(req http.Request, ignoredHeaders map[string]bool) string {
-	var headers []string
-	for k := range req.Header {
-		if _, ok := ignoredHeaders[http.CanonicalHeaderKey(k)]; ok {
-			continue // Ignored header found continue.
-		}
-		headers = append(headers, strings.ToLower(k))
-	}
-	if !headerExists("host", headers) {
-		headers = append(headers, "host")
-	}
-	sort.Strings(headers)
-	return strings.Join(headers, ";")
-}
-
-// getCanonicalRequest generate a canonical request of style.
-//
-// canonicalRequest =
-//
-//	<HTTPMethod>\n
-//	<CanonicalURI>\n
-//	<CanonicalQueryString>\n
-//	<CanonicalHeaders>\n
-//	<SignedHeaders>\n
-//	<HashedPayload>
-func getCanonicalRequest(req http.Request, ignoredHeaders map[string]bool, hashedPayload string) string {
-	req.URL.RawQuery = strings.ReplaceAll(req.URL.Query().Encode(), "+", "%20")
-	canonicalRequest := strings.Join([]string{
-		req.Method,
-		s3utils.EncodePath(req.URL.Path),
-		req.URL.RawQuery,
-		getCanonicalHeaders(req, ignoredHeaders),
-		getSignedHeaders(req, ignoredHeaders),
-		hashedPayload,
-	}, "\n")
-	return canonicalRequest
-}
-
-// getStringToSign a string based on selected query values.
-func getStringToSignV4(t time.Time, location, canonicalRequest, serviceType string) string {
-	stringToSign := signV4Algorithm + "\n" + t.Format(iso8601DateFormat) + "\n"
-	stringToSign = stringToSign + getScope(location, t, serviceType) + "\n"
-	stringToSign += hex.EncodeToString(sum256([]byte(canonicalRequest)))
-	return stringToSign
-}
-
-// PreSignV4 presign the request, in accordance with
-// http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-query-string-auth.html.
-func PreSignV4(req http.Request, accessKeyID, secretAccessKey, sessionToken, location string, expires int64) *http.Request {
-	// Presign is not needed for anonymous credentials.
-	if accessKeyID == "" || secretAccessKey == "" {
-		return &req
-	}
-
-	// Initial time.
-	t := time.Now().UTC()
-
-	// Get credential string.
-	credential := GetCredential(accessKeyID, location, t, ServiceTypeS3)
-
-	// Get all signed headers.
-	signedHeaders := getSignedHeaders(req, v4IgnoredHeaders)
-
-	// Set URL query.
-	query := req.URL.Query()
-	query.Set("X-Amz-Algorithm", signV4Algorithm)
-	query.Set("X-Amz-Date", t.Format(iso8601DateFormat))
-	query.Set("X-Amz-Expires", strconv.FormatInt(expires, 10))
-	query.Set("X-Amz-SignedHeaders", signedHeaders)
-	query.Set("X-Amz-Credential", credential)
-	// Set session token if available.
-	if sessionToken != "" {
-		query.Set("X-Amz-Security-Token", sessionToken)
-	}
-	req.URL.RawQuery = query.Encode()
-
-	// Get canonical request.
-	canonicalRequest := getCanonicalRequest(req, v4IgnoredHeaders, getHashedPayload(req))
-
-	// Get string to sign from canonical request.
-	stringToSign := getStringToSignV4(t, location, canonicalRequest, ServiceTypeS3)
-
-	// Gext hmac signing key.
-	signingKey := getSigningKey(secretAccessKey, location, t, ServiceTypeS3)
-
-	// Calculate signature.
-	signature := getSignature(signingKey, stringToSign)
-
-	// Add signature header to RawQuery.
-	req.URL.RawQuery += "&X-Amz-Signature=" + signature
-
-	return &req
-}
-
-// PostPresignSignatureV4 - presigned signature for PostPolicy
-// requests.
-func PostPresignSignatureV4(policyBase64 string, t time.Time, secretAccessKey, location string) string {
-	// Get signining key.
-	signingkey := getSigningKey(secretAccessKey, location, t, ServiceTypeS3)
-	// Calculate signature.
-	signature := getSignature(signingkey, policyBase64)
-	return signature
-}
-
-// SignV4STS - signature v4 for STS request.
-func SignV4STS(req http.Request, accessKeyID, secretAccessKey, location string) *http.Request {
-	return signV4(req, accessKeyID, secretAccessKey, "", location, ServiceTypeSTS, nil)
-}
-
-// Internal function called for different service types.
-func signV4(req http.Request, accessKeyID, secretAccessKey, sessionToken, location, serviceType string, trailer http.Header) *http.Request {
-	// Signature calculation is not needed for anonymous credentials.
-	if accessKeyID == "" || secretAccessKey == "" {
-		return &req
-	}
-
-	// Initial time.
-	t := time.Now().UTC()
-
-	// Set x-amz-date.
-	req.Header.Set("X-Amz-Date", t.Format(iso8601DateFormat))
-
-	// Set session token if available.
-	if sessionToken != "" {
-		req.Header.Set("X-Amz-Security-Token", sessionToken)
-	}
-
-	if len(trailer) > 0 {
-		for k := range trailer {
-			req.Header.Add("X-Amz-Trailer", strings.ToLower(k))
-		}
-
-		req.Header.Set("Content-Encoding", "aws-chunked")
-		req.Header.Set("x-amz-decoded-content-length", strconv.FormatInt(req.ContentLength, 10))
-	}
-
-	hashedPayload := getHashedPayload(req)
-	if serviceType == ServiceTypeSTS {
-		// Content sha256 header is not sent with the request
-		// but it is expected to have sha256 of payload for signature
-		// in STS service type request.
-		req.Header.Del("X-Amz-Content-Sha256")
-	}
-
-	// Get canonical request.
-	canonicalRequest := getCanonicalRequest(req, v4IgnoredHeaders, hashedPayload)
-
-	// Get string to sign from canonical request.
-	stringToSign := getStringToSignV4(t, location, canonicalRequest, serviceType)
-
-	// Get hmac signing key.
-	signingKey := getSigningKey(secretAccessKey, location, t, serviceType)
-
-	// Get credential string.
-	credential := GetCredential(accessKeyID, location, t, serviceType)
-
-	// Get all signed headers.
-	signedHeaders := getSignedHeaders(req, v4IgnoredHeaders)
-
-	// Calculate signature.
-	signature := getSignature(signingKey, stringToSign)
-
-	// If regular request, construct the final authorization header.
-	parts := []string{
-		signV4Algorithm + " Credential=" + credential,
-		"SignedHeaders=" + signedHeaders,
-		"Signature=" + signature,
-	}
-
-	// Set authorization header.
-	auth := strings.Join(parts, ", ")
-	req.Header.Set("Authorization", auth)
-
-	if len(trailer) > 0 {
-		// Use custom chunked encoding.
-		req.Trailer = trailer
-		return StreamingUnsignedV4(&req, sessionToken, req.ContentLength, time.Now().UTC())
-	}
-	return &req
-}
-
-// SignV4 sign the request before Do(), in accordance with
-// http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html.
-func SignV4(req http.Request, accessKeyID, secretAccessKey, sessionToken, location string) *http.Request {
-	return signV4(req, accessKeyID, secretAccessKey, sessionToken, location, ServiceTypeS3, nil)
-}
-
-// SignV4Trailer sign the request before Do(), in accordance with
-// http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html
-func SignV4Trailer(req http.Request, accessKeyID, secretAccessKey, sessionToken, location string, trailer http.Header) *http.Request {
-	return signV4(req, accessKeyID, secretAccessKey, sessionToken, location, ServiceTypeS3, trailer)
-}