mirror of
https://github.com/minio/mc.git
synced 2025-11-12 01:02:26 +03:00
101 lines
3.1 KiB
Go
101 lines
3.1 KiB
Go
/*
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* Minio Client (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bytes"
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"net/http"
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"net/http/httputil"
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"regexp"
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"strings"
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"github.com/minio/mc/pkg/console"
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"github.com/minio/mc/pkg/httptracer"
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)
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// traceV4 - tracing structure for signature version '4'.
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type traceV4 struct{}
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// newTraceV4 - initialize Trace structure
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func newTraceV4() httptracer.HTTPTracer {
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return traceV4{}
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}
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// Request - Trace HTTP Request
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func (t traceV4) Request(req *http.Request) (err error) {
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origAuth := req.Header.Get("Authorization")
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if strings.TrimSpace(origAuth) != "" {
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// Authorization (S3 v4 signature) Format:
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// Authorization: AWS4-HMAC-SHA256 Credential=AKIAJNACEGBGMXBHLEZA/20150524/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=bbfaa693c626021bcb5f911cd898a1a30206c1fad6bad1e0eb89e282173bd24c
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// Strip out accessKeyID from: Credential=<access-key-id>/<date>/<aws-region>/<aws-service>/aws4_request
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regCred := regexp.MustCompile("Credential=([A-Z0-9]+)/")
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newAuth := regCred.ReplaceAllString(origAuth, "Credential=**REDACTED**/")
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// Strip out 256-bit signature from: Signature=<256-bit signature>
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regSign := regexp.MustCompile("Signature=([[0-9a-f]+)")
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newAuth = regSign.ReplaceAllString(newAuth, "Signature=**REDACTED**")
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// Set a temporary redacted auth
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req.Header.Set("Authorization", newAuth)
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var reqTrace []byte
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reqTrace, err = httputil.DumpRequestOut(req, false) // Only display header
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if err == nil {
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console.Debug(string(reqTrace))
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}
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// Undo
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req.Header.Set("Authorization", origAuth)
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}
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return err
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}
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// Response - Trace HTTP Response
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func (t traceV4) Response(resp *http.Response) (err error) {
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var respTrace []byte
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// For errors we make sure to dump response body as well.
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if resp.StatusCode != http.StatusOK &&
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resp.StatusCode != http.StatusPartialContent &&
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resp.StatusCode != http.StatusNoContent {
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respTrace, err = httputil.DumpResponse(resp, true)
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} else {
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// WORKAROUND for https://github.com/golang/go/issues/13942.
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// httputil.DumpResponse does not print response headers for
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// all successful calls which have response ContentLength set
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// to zero. Keep this workaround until the above bug is fixed.
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if resp.ContentLength == 0 {
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var buffer bytes.Buffer
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if err = resp.Header.Write(&buffer); err != nil {
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return err
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}
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respTrace = buffer.Bytes()
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respTrace = append(respTrace, []byte("\r\n")...)
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} else {
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respTrace, err = httputil.DumpResponse(resp, false)
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if err != nil {
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return err
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}
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}
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}
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if err == nil {
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console.Debug(string(respTrace))
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}
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return err
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}
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