forked from minio/mc
/
client-s3-trace_v4.go
84 lines (71 loc) · 2.6 KB
/
client-s3-trace_v4.go
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/*
* Minio Client (C) 2015 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 main
import (
"net/http"
"net/http/httputil"
"regexp"
"strings"
"github.com/minio/mc/pkg/console"
"github.com/minio/mc/pkg/httptracer"
)
// traceV4 - tracing structure for signature version '4'.
type traceV4 struct{}
// newTraceV4 - initialize Trace structure
func newTraceV4() httptracer.HTTPTracer {
return traceV4{}
}
// Request - Trace HTTP Request
func (t traceV4) Request(req *http.Request) (err error) {
origAuth := req.Header.Get("Authorization")
if strings.TrimSpace(origAuth) != "" {
// Authorization (S3 v4 signature) Format:
// Authorization: AWS4-HMAC-SHA256 Credential=AKIAJNACEGBGMXBHLEZA/20150524/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=bbfaa693c626021bcb5f911cd898a1a30206c1fad6bad1e0eb89e282173bd24c
// Strip out accessKeyID from: Credential=<access-key-id>/<date>/<aws-region>/<aws-service>/aws4_request
regCred := regexp.MustCompile("Credential=([A-Z0-9]+)/")
newAuth := regCred.ReplaceAllString(origAuth, "Credential=**REDACTED**/")
// Strip out 256-bit signature from: Signature=<256-bit signature>
regSign := regexp.MustCompile("Signature=([[0-9a-f]+)")
newAuth = regSign.ReplaceAllString(newAuth, "Signature=**REDACTED**")
// Set a temporary redacted auth
req.Header.Set("Authorization", newAuth)
var reqTrace []byte
reqTrace, err = httputil.DumpRequestOut(req, false) // Only display header
if err == nil {
console.Debug(string(reqTrace))
}
// Undo
req.Header.Set("Authorization", origAuth)
}
return err
}
// Response - Trace HTTP Response
func (t traceV4) Response(res *http.Response) (err error) {
var resTrace []byte
// For errors we make sure to dump response body as well.
if res.StatusCode != http.StatusOK &&
res.StatusCode != http.StatusPartialContent &&
res.StatusCode != http.StatusNoContent {
resTrace, err = httputil.DumpResponse(res, true)
} else {
// Only display header
resTrace, err = httputil.DumpResponse(res, false)
}
if err == nil {
console.Debug(string(resTrace))
}
return err
}