1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
package http
import (
"bufio"
"bytes"
"fmt"
"io"
"net/http"
"strings"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/client/common"
"gopkg.in/src-d/go-git.v4/plumbing/format/packp/pktline"
)
// GitUploadPackService git-upload-pack service over HTTP
type GitUploadPackService struct {
client *http.Client
endpoint common.Endpoint
auth AuthMethod
}
// NewGitUploadPackService connects to a git-upload-pack service over HTTP, the
// auth is extracted from the URL, or can be provided using the SetAuth method
func NewGitUploadPackService(endpoint common.Endpoint) common.GitUploadPackService {
return newGitUploadPackService(endpoint, http.DefaultClient)
}
// NewGitUploadPackServiceFactory creates a http client factory with a customizable client
// See `InstallProtocol` to install and override default http client.
// Unless a properly initialized client is given, it will fall back into `http.DefaultClient`.
func NewGitUploadPackServiceFactory(client *http.Client) common.GitUploadPackServiceFactory {
return func(endpoint common.Endpoint) common.GitUploadPackService {
return newGitUploadPackService(endpoint, client)
}
}
func newGitUploadPackService(endpoint common.Endpoint, client *http.Client) common.GitUploadPackService {
if client == nil {
client = http.DefaultClient
}
s := &GitUploadPackService{
client: client,
endpoint: endpoint,
}
s.setBasicAuthFromEndpoint()
return s
}
// Connect has not any effect, is here to satisfy interface
func (s *GitUploadPackService) Connect() error {
return nil
}
func (s *GitUploadPackService) setBasicAuthFromEndpoint() {
info := s.endpoint.User
if info == nil {
return
}
p, ok := info.Password()
if !ok {
return
}
u := info.Username()
s.auth = NewBasicAuth(u, p)
}
// SetAuth sets the AuthMethod
func (s *GitUploadPackService) SetAuth(auth common.AuthMethod) error {
httpAuth, ok := auth.(AuthMethod)
if !ok {
return common.ErrInvalidAuthMethod
}
s.auth = httpAuth
return nil
}
// Info returns the references info and capabilities from the service
func (s *GitUploadPackService) Info() (*common.GitUploadPackInfo, error) {
url := fmt.Sprintf(
"%s/info/refs?service=%s",
s.endpoint.String(), common.GitUploadPackServiceName,
)
res, err := s.doRequest("GET", url, nil)
if err != nil {
return nil, err
}
defer res.Body.Close()
i := common.NewGitUploadPackInfo()
return i, i.Decode(res.Body)
}
// Fetch request and returns a reader to a packfile
func (s *GitUploadPackService) Fetch(r *common.GitUploadPackRequest) (io.ReadCloser, error) {
url := fmt.Sprintf(
"%s/%s",
s.endpoint.String(), common.GitUploadPackServiceName,
)
res, err := s.doRequest("POST", url, r.Reader())
if err != nil {
return nil, err
}
reader := newBufferedReadCloser(res.Body)
if _, err := reader.Peek(1); err != nil {
if err == io.ErrUnexpectedEOF {
return nil, common.ErrEmptyGitUploadPack
}
return nil, err
}
if err := discardResponseInfo(reader); err != nil {
return nil, err
}
return reader, nil
}
func discardResponseInfo(r io.Reader) error {
s := pktline.NewScanner(r)
for s.Scan() {
if bytes.Equal(s.Bytes(), []byte{'N', 'A', 'K', '\n'}) {
break
}
}
return s.Err()
}
func (s *GitUploadPackService) doRequest(method, url string, content *strings.Reader) (*http.Response, error) {
var body io.Reader
if content != nil {
body = content
}
req, err := http.NewRequest(method, url, body)
if err != nil {
return nil, plumbing.NewPermanentError(err)
}
s.applyHeadersToRequest(req, content)
s.applyAuthToRequest(req)
res, err := s.client.Do(req)
if err != nil {
return nil, plumbing.NewUnexpectedError(err)
}
if err := NewErr(res); err != nil {
_ = res.Body.Close()
return nil, err
}
return res, nil
}
func (s *GitUploadPackService) applyHeadersToRequest(req *http.Request, content *strings.Reader) {
req.Header.Add("User-Agent", "git/1.0")
req.Header.Add("Host", "github.com")
if content == nil {
req.Header.Add("Accept", "*/*")
} else {
req.Header.Add("Accept", "application/x-git-upload-pack-result")
req.Header.Add("Content-Type", "application/x-git-upload-pack-request")
req.Header.Add("Content-Length", string(content.Len()))
}
}
func (s *GitUploadPackService) applyAuthToRequest(req *http.Request) {
if s.auth == nil {
return
}
s.auth.setAuth(req)
}
// Disconnect do nothing
func (s *GitUploadPackService) Disconnect() error {
return nil
}
type bufferedReadCloser struct {
*bufio.Reader
closer io.Closer
}
func newBufferedReadCloser(r io.ReadCloser) *bufferedReadCloser {
return &bufferedReadCloser{bufio.NewReader(r), r}
}
func (r *bufferedReadCloser) Close() error {
return r.closer.Close()
}
|
