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restic/internal/debug/round_tripper.go
Michael Eischer ff7ef5007e Replace most usages of ioutil with the underlying function
The ioutil functions are deprecated since Go 1.17 and only wrap another
library function. Thus directly call the underlying function.

This commit only mechanically replaces the function calls.
2022-12-02 19:36:43 +01:00

115 lines
2.4 KiB
Go

package debug
import (
"fmt"
"io"
"net/http"
"net/http/httputil"
"os"
"github.com/restic/restic/internal/errors"
)
type eofDetectRoundTripper struct {
http.RoundTripper
}
type eofDetectReader struct {
eofSeen bool
rd io.ReadCloser
}
func (rd *eofDetectReader) Read(p []byte) (n int, err error) {
n, err = rd.rd.Read(p)
if err == io.EOF {
rd.eofSeen = true
}
return n, err
}
func (rd *eofDetectReader) Close() error {
if !rd.eofSeen {
buf, err := io.ReadAll(rd)
msg := fmt.Sprintf("body not drained, %d bytes not read", len(buf))
if err != nil {
msg += fmt.Sprintf(", error: %v", err)
}
if len(buf) > 0 {
if len(buf) > 20 {
buf = append(buf[:20], []byte("...")...)
}
msg += fmt.Sprintf(", body: %q", buf)
}
fmt.Fprintln(os.Stderr, msg)
Log("%s: %+v", msg, errors.New("Close()"))
}
return rd.rd.Close()
}
func (tr eofDetectRoundTripper) RoundTrip(req *http.Request) (res *http.Response, err error) {
res, err = tr.RoundTripper.RoundTrip(req)
if res != nil && res.Body != nil {
res.Body = &eofDetectReader{rd: res.Body}
}
return res, err
}
type loggingRoundTripper struct {
http.RoundTripper
}
func redactHeader(header http.Header) map[string][]string {
removedHeaders := make(map[string][]string)
for _, hdr := range []string{
"Authorization",
"X-Auth-Token", // Swift headers
"X-Auth-Key",
} {
origHeader, hasHeader := header[hdr]
if hasHeader {
removedHeaders[hdr] = origHeader
header[hdr] = []string{"**redacted**"}
}
}
return removedHeaders
}
func restoreHeader(header http.Header, origHeaders map[string][]string) {
for hdr, val := range origHeaders {
header[hdr] = val
}
}
func (tr loggingRoundTripper) RoundTrip(req *http.Request) (res *http.Response, err error) {
// save original auth and redact it
origHeaders := redactHeader(req.Header)
trace, err := httputil.DumpRequestOut(req, false)
if err != nil {
Log("DumpRequestOut() error: %v\n", err)
} else {
Log("------------ HTTP REQUEST -----------\n%s", trace)
}
restoreHeader(req.Header, origHeaders)
res, err = tr.RoundTripper.RoundTrip(req)
if err != nil {
Log("RoundTrip() returned error: %v", err)
}
if res != nil {
origHeaders := redactHeader(res.Header)
trace, err := httputil.DumpResponse(res, false)
restoreHeader(res.Header, origHeaders)
if err != nil {
Log("DumpResponse() error: %v\n", err)
} else {
Log("------------ HTTP RESPONSE ----------\n%s", trace)
}
}
return res, err
}