| 1 | // Copyright 2019 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // cookieauth uses a “Netscape cookie file” to implement the GOAUTH protocol |
| 6 | // described in https://golang.org/issue/26232. |
| 7 | // It expects the location of the file as the first command-line argument. |
| 8 | // |
| 9 | // Example GOAUTH usage: |
| 10 | // |
| 11 | // export GOAUTH="cookieauth $(git config --get http.cookieFile)" |
| 12 | // |
| 13 | // See http://www.cookiecentral.com/faq/#3.5 for a description of the Netscape |
| 14 | // cookie file format. |
| 15 | package main |
| 16 | |
| 17 | import ( |
| 18 | "bufio" |
| 19 | "fmt" |
| 20 | "io" |
| 21 | "log" |
| 22 | "net/http" |
| 23 | "net/http/cookiejar" |
| 24 | "net/url" |
| 25 | "os" |
| 26 | "strconv" |
| 27 | "strings" |
| 28 | "time" |
| 29 | "unicode" |
| 30 | ) |
| 31 | |
| 32 | func main() { |
| 33 | if len(os.Args) < 2 { |
| 34 | fmt.Fprintf(os.Stderr, "usage: %s COOKIEFILE [URL]\n", os.Args[0]) |
| 35 | os.Exit(2) |
| 36 | } |
| 37 | |
| 38 | log.SetPrefix("cookieauth: ") |
| 39 | |
| 40 | f, err := os.Open(os.Args[1]) |
| 41 | if err != nil { |
| 42 | log.Fatalf("failed to read cookie file: %v\n", os.Args[1]) |
| 43 | } |
| 44 | defer f.Close() |
| 45 | |
| 46 | var ( |
| 47 | targetURL *url.URL |
| 48 | targetURLs = map[string]*url.URL{} |
| 49 | ) |
| 50 | if len(os.Args) == 3 { |
| 51 | targetURL, err = url.ParseRequestURI(os.Args[2]) |
| 52 | if err != nil { |
| 53 | log.Fatalf("invalid request URI (%v): %q\n", err, os.Args[2]) |
| 54 | } |
| 55 | targetURLs[targetURL.String()] = targetURL |
| 56 | } else if len(os.Args) > 3 { |
| 57 | // Extra arguments were passed: maybe the protocol was expanded? |
| 58 | // We don't know how to interpret the request, so ignore it. |
| 59 | return |
| 60 | } |
| 61 | |
| 62 | entries, err := parseCookieFile(f.Name(), f) |
| 63 | if err != nil { |
| 64 | log.Fatalf("error reading cookie file: %v\n", f.Name()) |
| 65 | } |
| 66 | |
| 67 | jar, err := cookiejar.New(nil) |
| 68 | if err != nil { |
| 69 | log.Fatalf("failed to initialize cookie jar: %v\n", err) |
| 70 | } |
| 71 | |
| 72 | for _, e := range entries { |
| 73 | u := &url.URL{ |
| 74 | Scheme: "https", |
| 75 | Host: e.Host, |
| 76 | Path: e.Cookie.Path, |
| 77 | } |
| 78 | |
| 79 | if targetURL == nil { |
| 80 | targetURLs[u.String()] = u |
| 81 | } |
| 82 | |
| 83 | jar.SetCookies(u, []*http.Cookie{&e.Cookie}) |
| 84 | } |
| 85 | |
| 86 | for _, u := range targetURLs { |
| 87 | req := &http.Request{URL: u, Header: make(http.Header)} |
| 88 | for _, c := range jar.Cookies(req.URL) { |
| 89 | req.AddCookie(c) |
| 90 | } |
| 91 | fmt.Printf("%s\n\n", u) |
| 92 | req.Header.Write(os.Stdout) |
| 93 | fmt.Println() |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | type Entry struct { |
| 98 | Host string |
| 99 | Cookie http.Cookie |
| 100 | } |
| 101 | |
| 102 | // parseCookieFile parses a Netscape cookie file as described in |
| 103 | // http://www.cookiecentral.com/faq/#3.5. |
| 104 | func parseCookieFile(name string, r io.Reader) ([]*Entry, error) { |
| 105 | var entries []*Entry |
| 106 | s := bufio.NewScanner(r) |
| 107 | line := 0 |
| 108 | for s.Scan() { |
| 109 | line++ |
| 110 | text := strings.TrimSpace(s.Text()) |
| 111 | if len(text) < 2 || (text[0] == '#' && unicode.IsSpace(rune(text[1]))) { |
| 112 | continue |
| 113 | } |
| 114 | |
| 115 | e, err := parseCookieLine(text) |
| 116 | if err != nil { |
| 117 | log.Printf("%s:%d: %v\n", name, line, err) |
| 118 | continue |
| 119 | } |
| 120 | entries = append(entries, e) |
| 121 | } |
| 122 | return entries, s.Err() |
| 123 | } |
| 124 | |
| 125 | func parseCookieLine(line string) (*Entry, error) { |
| 126 | f := strings.Fields(line) |
| 127 | if len(f) < 7 { |
| 128 | return nil, fmt.Errorf("found %d columns; want 7", len(f)) |
| 129 | } |
| 130 | |
| 131 | e := new(Entry) |
| 132 | c := &e.Cookie |
| 133 | |
| 134 | if domain := f[0]; strings.HasPrefix(domain, "#HttpOnly_") { |
| 135 | c.HttpOnly = true |
| 136 | e.Host = strings.TrimPrefix(domain[10:], ".") |
| 137 | } else { |
| 138 | e.Host = strings.TrimPrefix(domain, ".") |
| 139 | } |
| 140 | |
| 141 | isDomain, err := strconv.ParseBool(f[1]) |
| 142 | if err != nil { |
| 143 | return nil, fmt.Errorf("non-boolean domain flag: %v", err) |
| 144 | } |
| 145 | if isDomain { |
| 146 | c.Domain = e.Host |
| 147 | } |
| 148 | |
| 149 | c.Path = f[2] |
| 150 | |
| 151 | c.Secure, err = strconv.ParseBool(f[3]) |
| 152 | if err != nil { |
| 153 | return nil, fmt.Errorf("non-boolean secure flag: %v", err) |
| 154 | } |
| 155 | |
| 156 | expiration, err := strconv.ParseInt(f[4], 10, 64) |
| 157 | if err != nil { |
| 158 | return nil, fmt.Errorf("malformed expiration: %v", err) |
| 159 | } |
| 160 | c.Expires = time.Unix(expiration, 0) |
| 161 | |
| 162 | c.Name = f[5] |
| 163 | c.Value = f[6] |
| 164 | |
| 165 | return e, nil |
| 166 | } |
| 167 |
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