forked from minio/mc
/
trace.go
72 lines (59 loc) · 2.22 KB
/
trace.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 s3
import (
"net/http"
"net/http/httputil"
"regexp"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/iodine"
)
// Trace - tracing structure
type Trace struct {
}
// NewTrace - initialize Trace structure
func NewTrace() HTTPTracer {
return Trace{}
}
// Request - Trace HTTP Request
func (t Trace) Request(req *http.Request) (err error) {
origAuth := req.Header.Get("Authorization")
// 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 access-key-id from: Credential=<access-key-id>/<date>/<aws-region>/<aws-service>/aws4_request
regCred := regexp.MustCompile("Credential=([A-Z]+)/")
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)
reqTrace, err := httputil.DumpRequestOut(req, false) // Only display header
if err == nil {
console.Debug(string(reqTrace))
}
// Undo
req.Header.Set("Authorization", origAuth)
return iodine.New(err, nil)
}
// Response - Trace HTTP Response
func (t Trace) Response(res *http.Response) (err error) {
resTrace, err := httputil.DumpResponse(res, false) // Only display header
if err == nil {
console.Debug(string(resTrace))
}
return iodine.New(err, nil)
}