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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// cookieauth uses a “Netscape cookie file” to implement the GOAUTH protocol
// described in https://golang.org/issue/26232.
// It expects the location of the file as the first command-line argument.
//
// Example GOAUTH usage:
//
// export GOAUTH="cookieauth $(git config --get http.cookieFile)"
//
// See http://www.cookiecentral.com/faq/#3.5 for a description of the Netscape
// cookie file format.
package main
import (
"bufio"
"fmt"
"io"
"log"
"net/http"
"net/http/cookiejar"
"net/url"
"os"
"strconv"
"strings"
"time"
"unicode"
)
func main() {
if len(os.Args) < 2 {
fmt.Fprintf(os.Stderr, "usage: %s COOKIEFILE [URL]\n", os.Args[0])
os.Exit(2)
}
log.SetPrefix("cookieauth: ")
f, err := os.Open(os.Args[1])
if err != nil {
log.Fatalf("failed to read cookie file: %v\n", os.Args[1])
}
defer f.Close()
var (
targetURL *url.URL
targetURLs = map[string]*url.URL{}
)
if len(os.Args) == 3 {
targetURL, err = url.ParseRequestURI(os.Args[2])
if err != nil {
log.Fatalf("invalid request URI (%v): %q\n", err, os.Args[2])
}
targetURLs[targetURL.String()] = targetURL
} else if len(os.Args) > 3 {
// Extra arguments were passed: maybe the protocol was expanded?
// We don't know how to interpret the request, so ignore it.
return
}
entries, err := parseCookieFile(f.Name(), f)
if err != nil {
log.Fatalf("error reading cookie file: %v\n", f.Name())
}
jar, err := cookiejar.New(nil)
if err != nil {
log.Fatalf("failed to initialize cookie jar: %v\n", err)
}
for _, e := range entries {
u := &url.URL{
Scheme: "https",
Host: e.Host,
Path: e.Cookie.Path,
}
if targetURL == nil {
targetURLs[u.String()] = u
}
jar.SetCookies(u, []*http.Cookie{&e.Cookie})
}
for _, u := range targetURLs {
req := &http.Request{URL: u, Header: make(http.Header)}
for _, c := range jar.Cookies(req.URL) {
req.AddCookie(c)
}
fmt.Printf("%s\n\n", u)
req.Header.Write(os.Stdout)
fmt.Println()
}
}
type Entry struct {
Host string
Cookie http.Cookie
}
// parseCookieFile parses a Netscape cookie file as described in
// http://www.cookiecentral.com/faq/#3.5.
func parseCookieFile(name string, r io.Reader) ([]*Entry, error) {
var entries []*Entry
s := bufio.NewScanner(r)
line := 0
for s.Scan() {
line++
text := strings.TrimSpace(s.Text())
if len(text) < 2 || (text[0] == '#' && unicode.IsSpace(rune(text[1]))) {
continue
}
e, err := parseCookieLine(text)
if err != nil {
log.Printf("%s:%d: %v\n", name, line, err)
continue
}
entries = append(entries, e)
}
return entries, s.Err()
}
func parseCookieLine(line string) (*Entry, error) {
f := strings.Fields(line)
if len(f) < 7 {
return nil, fmt.Errorf("found %d columns; want 7", len(f))
}
e := new(Entry)
c := &e.Cookie
if domain := f[0]; strings.HasPrefix(domain, "#HttpOnly_") {
c.HttpOnly = true
e.Host = strings.TrimPrefix(domain[10:], ".")
} else {
e.Host = strings.TrimPrefix(domain, ".")
}
isDomain, err := strconv.ParseBool(f[1])
if err != nil {
return nil, fmt.Errorf("non-boolean domain flag: %v", err)
}
if isDomain {
c.Domain = e.Host
}
c.Path = f[2]
c.Secure, err = strconv.ParseBool(f[3])
if err != nil {
return nil, fmt.Errorf("non-boolean secure flag: %v", err)
}
expiration, err := strconv.ParseInt(f[4], 10, 64)
if err != nil {
return nil, fmt.Errorf("malformed expiration: %v", err)
}
c.Expires = time.Unix(expiration, 0)
c.Name = f[5]
c.Value = f[6]
return e, nil
}
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