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/* |
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* Copyright (C) the libgit2 contributors. All rights reserved. |
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* |
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* This file is part of libgit2, distributed under the GNU GPL v2 with |
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* a Linking Exception. For full terms see the included COPYING file. |
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*/ |
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#include "ssh.h" |
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#ifdef GIT_SSH |
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#include |
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#endif |
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#include "runtime.h" |
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#include "net.h" |
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#include "netops.h" |
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#include "smart.h" |
18
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#include "streams/socket.h" |
19
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#include "git2/credential.h" |
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#include "git2/sys/credential.h" |
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#ifdef GIT_SSH |
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25
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#define OWNING_SUBTRANSPORT(s) ((ssh_subtransport *)(s)->parent.subtransport) |
26
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27
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static const char cmd_uploadpack[] = "git-upload-pack"; |
28
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static const char cmd_receivepack[] = "git-receive-pack"; |
29
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30
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typedef struct { |
31
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git_smart_subtransport_stream parent; |
32
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git_stream *io; |
33
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LIBSSH2_SESSION *session; |
34
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LIBSSH2_CHANNEL *channel; |
35
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const char *cmd; |
36
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git_net_url url; |
37
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unsigned sent_command : 1; |
38
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} ssh_stream; |
39
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40
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typedef struct { |
41
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git_smart_subtransport parent; |
42
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transport_smart *owner; |
43
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ssh_stream *current_stream; |
44
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git_credential *cred; |
45
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char *cmd_uploadpack; |
46
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char *cmd_receivepack; |
47
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} ssh_subtransport; |
48
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49
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static int list_auth_methods(int *out, LIBSSH2_SESSION *session, const char *username); |
50
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51
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static void ssh_error(LIBSSH2_SESSION *session, const char *errmsg) |
52
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{ |
53
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char *ssherr; |
54
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libssh2_session_last_error(session, &ssherr, NULL, 0); |
55
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56
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git_error_set(GIT_ERROR_SSH, "%s: %s", errmsg, ssherr); |
57
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} |
58
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59
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/* |
60
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* Create a git protocol request. |
61
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* |
62
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* For example: git-upload-pack '/libgit2/libgit2' |
63
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*/ |
64
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static int gen_proto(git_str *request, const char *cmd, git_net_url *url) |
65
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{ |
66
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const char *repo; |
67
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68
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repo = url->path; |
69
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70
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if (repo && repo[0] == '/' && repo[1] == '~') |
71
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repo++; |
72
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73
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if (!repo || !repo[0]) { |
74
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git_error_set(GIT_ERROR_NET, "malformed git protocol URL"); |
75
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return -1; |
76
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} |
77
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78
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git_str_puts(request, cmd); |
79
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git_str_puts(request, " '"); |
80
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git_str_puts(request, repo); |
81
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git_str_puts(request, "'"); |
82
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83
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if (git_str_oom(request)) |
84
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return -1; |
85
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86
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return 0; |
87
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} |
88
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89
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static int send_command(ssh_stream *s) |
90
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{ |
91
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int error; |
92
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git_str request = GIT_STR_INIT; |
93
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94
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error = gen_proto(&request, s->cmd, &s->url); |
95
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if (error < 0) |
96
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goto cleanup; |
97
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98
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error = libssh2_channel_exec(s->channel, request.ptr); |
99
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if (error < LIBSSH2_ERROR_NONE) { |
100
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ssh_error(s->session, "SSH could not execute request"); |
101
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goto cleanup; |
102
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} |
103
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104
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s->sent_command = 1; |
105
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106
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cleanup: |
107
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git_str_dispose(&request); |
108
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return error; |
109
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} |
110
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111
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static int ssh_stream_read( |
112
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git_smart_subtransport_stream *stream, |
113
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char *buffer, |
114
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size_t buf_size, |
115
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size_t *bytes_read) |
116
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{ |
117
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int rc; |
118
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ssh_stream *s = GIT_CONTAINER_OF(stream, ssh_stream, parent); |
119
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120
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*bytes_read = 0; |
121
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122
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if (!s->sent_command && send_command(s) < 0) |
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return -1; |
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125
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if ((rc = libssh2_channel_read(s->channel, buffer, buf_size)) < LIBSSH2_ERROR_NONE) { |
126
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ssh_error(s->session, "SSH could not read data"); |
127
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return -1; |
128
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} |
129
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130
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/* |
131
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* If we can't get anything out of stdout, it's typically a |
132
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* not-found error, so read from stderr and signal EOF on |
133
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* stderr. |
134
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*/ |
135
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if (rc == 0) { |
136
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if ((rc = libssh2_channel_read_stderr(s->channel, buffer, buf_size)) > 0) { |
137
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git_error_set(GIT_ERROR_SSH, "%*s", rc, buffer); |
138
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return GIT_EEOF; |
139
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} else if (rc < LIBSSH2_ERROR_NONE) { |
140
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ssh_error(s->session, "SSH could not read stderr"); |
141
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return -1; |
142
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} |
143
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} |
144
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145
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146
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*bytes_read = rc; |
147
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148
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return 0; |
149
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} |
150
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151
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static int ssh_stream_write( |
152
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git_smart_subtransport_stream *stream, |
153
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const char *buffer, |
154
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size_t len) |
155
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{ |
156
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ssh_stream *s = GIT_CONTAINER_OF(stream, ssh_stream, parent); |
157
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size_t off = 0; |
158
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ssize_t ret = 0; |
159
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160
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if (!s->sent_command && send_command(s) < 0) |
161
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return -1; |
162
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163
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do { |
164
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ret = libssh2_channel_write(s->channel, buffer + off, len - off); |
165
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if (ret < 0) |
166
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break; |
167
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168
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off += ret; |
169
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170
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} while (off < len); |
171
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172
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if (ret < 0) { |
173
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ssh_error(s->session, "SSH could not write data"); |
174
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return -1; |
175
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} |
176
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177
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return 0; |
178
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} |
179
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180
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static void ssh_stream_free(git_smart_subtransport_stream *stream) |
181
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{ |
182
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ssh_stream *s = GIT_CONTAINER_OF(stream, ssh_stream, parent); |
183
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ssh_subtransport *t; |
184
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185
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if (!stream) |
186
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return; |
187
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188
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t = OWNING_SUBTRANSPORT(s); |
189
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t->current_stream = NULL; |
190
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191
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if (s->channel) { |
192
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libssh2_channel_close(s->channel); |
193
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libssh2_channel_free(s->channel); |
194
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s->channel = NULL; |
195
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} |
196
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197
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if (s->session) { |
198
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libssh2_session_disconnect(s->session, "closing transport"); |
199
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libssh2_session_free(s->session); |
200
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s->session = NULL; |
201
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} |
202
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203
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if (s->io) { |
204
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git_stream_close(s->io); |
205
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git_stream_free(s->io); |
206
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s->io = NULL; |
207
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} |
208
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209
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git_net_url_dispose(&s->url); |
210
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git__free(s); |
211
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} |
212
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|
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213
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static int ssh_stream_alloc( |
214
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ssh_subtransport *t, |
215
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|
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const char *cmd, |
216
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git_smart_subtransport_stream **stream) |
217
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|
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|
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{ |
218
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ssh_stream *s; |
219
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220
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GIT_ASSERT_ARG(stream); |
221
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222
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s = git__calloc(sizeof(ssh_stream), 1); |
223
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GIT_ERROR_CHECK_ALLOC(s); |
224
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225
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s->parent.subtransport = &t->parent; |
226
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s->parent.read = ssh_stream_read; |
227
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s->parent.write = ssh_stream_write; |
228
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s->parent.free = ssh_stream_free; |
229
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230
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s->cmd = cmd; |
231
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232
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*stream = &s->parent; |
233
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return 0; |
234
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|
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|
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} |
235
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|
236
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|
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|
static int ssh_agent_auth(LIBSSH2_SESSION *session, git_credential_ssh_key *c) { |
237
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|
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|
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|
|
int rc = LIBSSH2_ERROR_NONE; |
238
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|
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|
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|
|
|
239
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|
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|
struct libssh2_agent_publickey *curr, *prev = NULL; |
240
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|
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|
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|
241
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|
LIBSSH2_AGENT *agent = libssh2_agent_init(session); |
242
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|
|
243
|
|
|
|
|
|
|
if (agent == NULL) |
244
|
|
|
|
|
|
|
return -1; |
245
|
|
|
|
|
|
|
|
246
|
|
|
|
|
|
|
rc = libssh2_agent_connect(agent); |
247
|
|
|
|
|
|
|
|
248
|
|
|
|
|
|
|
if (rc != LIBSSH2_ERROR_NONE) |
249
|
|
|
|
|
|
|
goto shutdown; |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
rc = libssh2_agent_list_identities(agent); |
252
|
|
|
|
|
|
|
|
253
|
|
|
|
|
|
|
if (rc != LIBSSH2_ERROR_NONE) |
254
|
|
|
|
|
|
|
goto shutdown; |
255
|
|
|
|
|
|
|
|
256
|
|
|
|
|
|
|
while (1) { |
257
|
|
|
|
|
|
|
rc = libssh2_agent_get_identity(agent, &curr, prev); |
258
|
|
|
|
|
|
|
|
259
|
|
|
|
|
|
|
if (rc < 0) |
260
|
|
|
|
|
|
|
goto shutdown; |
261
|
|
|
|
|
|
|
|
262
|
|
|
|
|
|
|
/* rc is set to 1 whenever the ssh agent ran out of keys to check. |
263
|
|
|
|
|
|
|
* Set the error code to authentication failure rather than erroring |
264
|
|
|
|
|
|
|
* out with an untranslatable error code. |
265
|
|
|
|
|
|
|
*/ |
266
|
|
|
|
|
|
|
if (rc == 1) { |
267
|
|
|
|
|
|
|
rc = LIBSSH2_ERROR_AUTHENTICATION_FAILED; |
268
|
|
|
|
|
|
|
goto shutdown; |
269
|
|
|
|
|
|
|
} |
270
|
|
|
|
|
|
|
|
271
|
|
|
|
|
|
|
rc = libssh2_agent_userauth(agent, c->username, curr); |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
if (rc == 0) |
274
|
|
|
|
|
|
|
break; |
275
|
|
|
|
|
|
|
|
276
|
|
|
|
|
|
|
prev = curr; |
277
|
|
|
|
|
|
|
} |
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
shutdown: |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
if (rc != LIBSSH2_ERROR_NONE) |
282
|
|
|
|
|
|
|
ssh_error(session, "error authenticating"); |
283
|
|
|
|
|
|
|
|
284
|
|
|
|
|
|
|
libssh2_agent_disconnect(agent); |
285
|
|
|
|
|
|
|
libssh2_agent_free(agent); |
286
|
|
|
|
|
|
|
|
287
|
|
|
|
|
|
|
return rc; |
288
|
|
|
|
|
|
|
} |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
static int _git_ssh_authenticate_session( |
291
|
|
|
|
|
|
|
LIBSSH2_SESSION *session, |
292
|
|
|
|
|
|
|
git_credential *cred) |
293
|
|
|
|
|
|
|
{ |
294
|
|
|
|
|
|
|
int rc; |
295
|
|
|
|
|
|
|
|
296
|
|
|
|
|
|
|
do { |
297
|
|
|
|
|
|
|
git_error_clear(); |
298
|
|
|
|
|
|
|
switch (cred->credtype) { |
299
|
|
|
|
|
|
|
case GIT_CREDENTIAL_USERPASS_PLAINTEXT: { |
300
|
|
|
|
|
|
|
git_credential_userpass_plaintext *c = (git_credential_userpass_plaintext *)cred; |
301
|
|
|
|
|
|
|
rc = libssh2_userauth_password(session, c->username, c->password); |
302
|
|
|
|
|
|
|
break; |
303
|
|
|
|
|
|
|
} |
304
|
|
|
|
|
|
|
case GIT_CREDENTIAL_SSH_KEY: { |
305
|
|
|
|
|
|
|
git_credential_ssh_key *c = (git_credential_ssh_key *)cred; |
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
if (c->privatekey) |
308
|
|
|
|
|
|
|
rc = libssh2_userauth_publickey_fromfile( |
309
|
|
|
|
|
|
|
session, c->username, c->publickey, |
310
|
|
|
|
|
|
|
c->privatekey, c->passphrase); |
311
|
|
|
|
|
|
|
else |
312
|
|
|
|
|
|
|
rc = ssh_agent_auth(session, c); |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
break; |
315
|
|
|
|
|
|
|
} |
316
|
|
|
|
|
|
|
case GIT_CREDENTIAL_SSH_CUSTOM: { |
317
|
|
|
|
|
|
|
git_credential_ssh_custom *c = (git_credential_ssh_custom *)cred; |
318
|
|
|
|
|
|
|
|
319
|
|
|
|
|
|
|
rc = libssh2_userauth_publickey( |
320
|
|
|
|
|
|
|
session, c->username, (const unsigned char *)c->publickey, |
321
|
|
|
|
|
|
|
c->publickey_len, c->sign_callback, &c->payload); |
322
|
|
|
|
|
|
|
break; |
323
|
|
|
|
|
|
|
} |
324
|
|
|
|
|
|
|
case GIT_CREDENTIAL_SSH_INTERACTIVE: { |
325
|
|
|
|
|
|
|
void **abstract = libssh2_session_abstract(session); |
326
|
|
|
|
|
|
|
git_credential_ssh_interactive *c = (git_credential_ssh_interactive *)cred; |
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
/* ideally, we should be able to set this by calling |
329
|
|
|
|
|
|
|
* libssh2_session_init_ex() instead of libssh2_session_init(). |
330
|
|
|
|
|
|
|
* libssh2's API is inconsistent here i.e. libssh2_userauth_publickey() |
331
|
|
|
|
|
|
|
* allows you to pass the `abstract` as part of the call, whereas |
332
|
|
|
|
|
|
|
* libssh2_userauth_keyboard_interactive() does not! |
333
|
|
|
|
|
|
|
* |
334
|
|
|
|
|
|
|
* The only way to set the `abstract` pointer is by calling |
335
|
|
|
|
|
|
|
* libssh2_session_abstract(), which will replace the existing |
336
|
|
|
|
|
|
|
* pointer as is done below. This is safe for now (at time of writing), |
337
|
|
|
|
|
|
|
* but may not be valid in future. |
338
|
|
|
|
|
|
|
*/ |
339
|
|
|
|
|
|
|
*abstract = c->payload; |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
rc = libssh2_userauth_keyboard_interactive( |
342
|
|
|
|
|
|
|
session, c->username, c->prompt_callback); |
343
|
|
|
|
|
|
|
break; |
344
|
|
|
|
|
|
|
} |
345
|
|
|
|
|
|
|
#ifdef GIT_SSH_MEMORY_CREDENTIALS |
346
|
|
|
|
|
|
|
case GIT_CREDENTIAL_SSH_MEMORY: { |
347
|
|
|
|
|
|
|
git_credential_ssh_key *c = (git_credential_ssh_key *)cred; |
348
|
|
|
|
|
|
|
|
349
|
|
|
|
|
|
|
GIT_ASSERT(c->username); |
350
|
|
|
|
|
|
|
GIT_ASSERT(c->privatekey); |
351
|
|
|
|
|
|
|
|
352
|
|
|
|
|
|
|
rc = libssh2_userauth_publickey_frommemory( |
353
|
|
|
|
|
|
|
session, |
354
|
|
|
|
|
|
|
c->username, |
355
|
|
|
|
|
|
|
strlen(c->username), |
356
|
|
|
|
|
|
|
c->publickey, |
357
|
|
|
|
|
|
|
c->publickey ? strlen(c->publickey) : 0, |
358
|
|
|
|
|
|
|
c->privatekey, |
359
|
|
|
|
|
|
|
strlen(c->privatekey), |
360
|
|
|
|
|
|
|
c->passphrase); |
361
|
|
|
|
|
|
|
break; |
362
|
|
|
|
|
|
|
} |
363
|
|
|
|
|
|
|
#endif |
364
|
|
|
|
|
|
|
default: |
365
|
|
|
|
|
|
|
rc = LIBSSH2_ERROR_AUTHENTICATION_FAILED; |
366
|
|
|
|
|
|
|
} |
367
|
|
|
|
|
|
|
} while (LIBSSH2_ERROR_EAGAIN == rc || LIBSSH2_ERROR_TIMEOUT == rc); |
368
|
|
|
|
|
|
|
|
369
|
|
|
|
|
|
|
if (rc == LIBSSH2_ERROR_PASSWORD_EXPIRED || |
370
|
|
|
|
|
|
|
rc == LIBSSH2_ERROR_AUTHENTICATION_FAILED || |
371
|
|
|
|
|
|
|
rc == LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED) |
372
|
|
|
|
|
|
|
return GIT_EAUTH; |
373
|
|
|
|
|
|
|
|
374
|
|
|
|
|
|
|
if (rc != LIBSSH2_ERROR_NONE) { |
375
|
|
|
|
|
|
|
if (!git_error_last()) |
376
|
|
|
|
|
|
|
ssh_error(session, "Failed to authenticate SSH session"); |
377
|
|
|
|
|
|
|
return -1; |
378
|
|
|
|
|
|
|
} |
379
|
|
|
|
|
|
|
|
380
|
|
|
|
|
|
|
return 0; |
381
|
|
|
|
|
|
|
} |
382
|
|
|
|
|
|
|
|
383
|
|
|
|
|
|
|
static int request_creds(git_credential **out, ssh_subtransport *t, const char *user, int auth_methods) |
384
|
|
|
|
|
|
|
{ |
385
|
|
|
|
|
|
|
int error, no_callback = 0; |
386
|
|
|
|
|
|
|
git_credential *cred = NULL; |
387
|
|
|
|
|
|
|
|
388
|
|
|
|
|
|
|
if (!t->owner->connect_opts.callbacks.credentials) { |
389
|
|
|
|
|
|
|
no_callback = 1; |
390
|
|
|
|
|
|
|
} else { |
391
|
|
|
|
|
|
|
error = t->owner->connect_opts.callbacks.credentials( |
392
|
|
|
|
|
|
|
&cred, |
393
|
|
|
|
|
|
|
t->owner->url, |
394
|
|
|
|
|
|
|
user, |
395
|
|
|
|
|
|
|
auth_methods, |
396
|
|
|
|
|
|
|
t->owner->connect_opts.callbacks.payload); |
397
|
|
|
|
|
|
|
|
398
|
|
|
|
|
|
|
if (error == GIT_PASSTHROUGH) { |
399
|
|
|
|
|
|
|
no_callback = 1; |
400
|
|
|
|
|
|
|
} else if (error < 0) { |
401
|
|
|
|
|
|
|
return error; |
402
|
|
|
|
|
|
|
} else if (!cred) { |
403
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "callback failed to initialize SSH credentials"); |
404
|
|
|
|
|
|
|
return -1; |
405
|
|
|
|
|
|
|
} |
406
|
|
|
|
|
|
|
} |
407
|
|
|
|
|
|
|
|
408
|
|
|
|
|
|
|
if (no_callback) { |
409
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "authentication required but no callback set"); |
410
|
|
|
|
|
|
|
return GIT_EAUTH; |
411
|
|
|
|
|
|
|
} |
412
|
|
|
|
|
|
|
|
413
|
|
|
|
|
|
|
if (!(cred->credtype & auth_methods)) { |
414
|
|
|
|
|
|
|
cred->free(cred); |
415
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "authentication callback returned unsupported credentials type"); |
416
|
|
|
|
|
|
|
return GIT_EAUTH; |
417
|
|
|
|
|
|
|
} |
418
|
|
|
|
|
|
|
|
419
|
|
|
|
|
|
|
*out = cred; |
420
|
|
|
|
|
|
|
|
421
|
|
|
|
|
|
|
return 0; |
422
|
|
|
|
|
|
|
} |
423
|
|
|
|
|
|
|
|
424
|
|
|
|
|
|
|
static int _git_ssh_session_create( |
425
|
|
|
|
|
|
|
LIBSSH2_SESSION **session, |
426
|
|
|
|
|
|
|
git_stream *io) |
427
|
|
|
|
|
|
|
{ |
428
|
|
|
|
|
|
|
int rc = 0; |
429
|
|
|
|
|
|
|
LIBSSH2_SESSION *s; |
430
|
|
|
|
|
|
|
git_socket_stream *socket = GIT_CONTAINER_OF(io, git_socket_stream, parent); |
431
|
|
|
|
|
|
|
|
432
|
|
|
|
|
|
|
GIT_ASSERT_ARG(session); |
433
|
|
|
|
|
|
|
|
434
|
|
|
|
|
|
|
s = libssh2_session_init(); |
435
|
|
|
|
|
|
|
if (!s) { |
436
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_NET, "failed to initialize SSH session"); |
437
|
|
|
|
|
|
|
return -1; |
438
|
|
|
|
|
|
|
} |
439
|
|
|
|
|
|
|
|
440
|
|
|
|
|
|
|
do { |
441
|
|
|
|
|
|
|
rc = libssh2_session_handshake(s, socket->s); |
442
|
|
|
|
|
|
|
} while (LIBSSH2_ERROR_EAGAIN == rc || LIBSSH2_ERROR_TIMEOUT == rc); |
443
|
|
|
|
|
|
|
|
444
|
|
|
|
|
|
|
if (rc != LIBSSH2_ERROR_NONE) { |
445
|
|
|
|
|
|
|
ssh_error(s, "failed to start SSH session"); |
446
|
|
|
|
|
|
|
libssh2_session_free(s); |
447
|
|
|
|
|
|
|
return -1; |
448
|
|
|
|
|
|
|
} |
449
|
|
|
|
|
|
|
|
450
|
|
|
|
|
|
|
libssh2_session_set_blocking(s, 1); |
451
|
|
|
|
|
|
|
|
452
|
|
|
|
|
|
|
*session = s; |
453
|
|
|
|
|
|
|
|
454
|
|
|
|
|
|
|
return 0; |
455
|
|
|
|
|
|
|
} |
456
|
|
|
|
|
|
|
|
457
|
|
|
|
|
|
|
#define SSH_DEFAULT_PORT "22" |
458
|
|
|
|
|
|
|
|
459
|
|
|
|
|
|
|
static int _git_ssh_setup_conn( |
460
|
|
|
|
|
|
|
ssh_subtransport *t, |
461
|
|
|
|
|
|
|
const char *url, |
462
|
|
|
|
|
|
|
const char *cmd, |
463
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream) |
464
|
|
|
|
|
|
|
{ |
465
|
|
|
|
|
|
|
int auth_methods, error = 0; |
466
|
|
|
|
|
|
|
ssh_stream *s; |
467
|
|
|
|
|
|
|
git_credential *cred = NULL; |
468
|
|
|
|
|
|
|
LIBSSH2_SESSION *session=NULL; |
469
|
|
|
|
|
|
|
LIBSSH2_CHANNEL *channel=NULL; |
470
|
|
|
|
|
|
|
|
471
|
|
|
|
|
|
|
t->current_stream = NULL; |
472
|
|
|
|
|
|
|
|
473
|
|
|
|
|
|
|
*stream = NULL; |
474
|
|
|
|
|
|
|
if (ssh_stream_alloc(t, cmd, stream) < 0) |
475
|
|
|
|
|
|
|
return -1; |
476
|
|
|
|
|
|
|
|
477
|
|
|
|
|
|
|
s = (ssh_stream *)*stream; |
478
|
|
|
|
|
|
|
s->session = NULL; |
479
|
|
|
|
|
|
|
s->channel = NULL; |
480
|
|
|
|
|
|
|
|
481
|
|
|
|
|
|
|
if (git_net_str_is_url(url)) |
482
|
|
|
|
|
|
|
error = git_net_url_parse(&s->url, url); |
483
|
|
|
|
|
|
|
else |
484
|
|
|
|
|
|
|
error = git_net_url_parse_scp(&s->url, url); |
485
|
|
|
|
|
|
|
|
486
|
|
|
|
|
|
|
if (error < 0) |
487
|
|
|
|
|
|
|
goto done; |
488
|
|
|
|
|
|
|
|
489
|
|
|
|
|
|
|
if ((error = git_socket_stream_new(&s->io, s->url.host, s->url.port)) < 0 || |
490
|
|
|
|
|
|
|
(error = git_stream_connect(s->io)) < 0) |
491
|
|
|
|
|
|
|
goto done; |
492
|
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
if ((error = _git_ssh_session_create(&session, s->io)) < 0) |
494
|
|
|
|
|
|
|
goto done; |
495
|
|
|
|
|
|
|
|
496
|
|
|
|
|
|
|
if (t->owner->connect_opts.callbacks.certificate_check != NULL) { |
497
|
|
|
|
|
|
|
git_cert_hostkey cert = {{ 0 }}, *cert_ptr; |
498
|
|
|
|
|
|
|
const char *key; |
499
|
|
|
|
|
|
|
size_t cert_len; |
500
|
|
|
|
|
|
|
int cert_type; |
501
|
|
|
|
|
|
|
|
502
|
|
|
|
|
|
|
cert.parent.cert_type = GIT_CERT_HOSTKEY_LIBSSH2; |
503
|
|
|
|
|
|
|
|
504
|
|
|
|
|
|
|
key = libssh2_session_hostkey(session, &cert_len, &cert_type); |
505
|
|
|
|
|
|
|
if (key != NULL) { |
506
|
|
|
|
|
|
|
cert.type |= GIT_CERT_SSH_RAW; |
507
|
|
|
|
|
|
|
cert.hostkey = key; |
508
|
|
|
|
|
|
|
cert.hostkey_len = cert_len; |
509
|
|
|
|
|
|
|
switch (cert_type) { |
510
|
|
|
|
|
|
|
case LIBSSH2_HOSTKEY_TYPE_RSA: |
511
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_RSA; |
512
|
|
|
|
|
|
|
break; |
513
|
|
|
|
|
|
|
case LIBSSH2_HOSTKEY_TYPE_DSS: |
514
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_DSS; |
515
|
|
|
|
|
|
|
break; |
516
|
|
|
|
|
|
|
|
517
|
|
|
|
|
|
|
#ifdef LIBSSH2_HOSTKEY_TYPE_ECDSA_256 |
518
|
|
|
|
|
|
|
case LIBSSH2_HOSTKEY_TYPE_ECDSA_256: |
519
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_256; |
520
|
|
|
|
|
|
|
break; |
521
|
|
|
|
|
|
|
case LIBSSH2_HOSTKEY_TYPE_ECDSA_384: |
522
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_384; |
523
|
|
|
|
|
|
|
break; |
524
|
|
|
|
|
|
|
case LIBSSH2_KNOWNHOST_KEY_ECDSA_521: |
525
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_521; |
526
|
|
|
|
|
|
|
break; |
527
|
|
|
|
|
|
|
#endif |
528
|
|
|
|
|
|
|
|
529
|
|
|
|
|
|
|
#ifdef LIBSSH2_HOSTKEY_TYPE_ED25519 |
530
|
|
|
|
|
|
|
case LIBSSH2_HOSTKEY_TYPE_ED25519: |
531
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_KEY_ED25519; |
532
|
|
|
|
|
|
|
break; |
533
|
|
|
|
|
|
|
#endif |
534
|
|
|
|
|
|
|
default: |
535
|
|
|
|
|
|
|
cert.raw_type = GIT_CERT_SSH_RAW_TYPE_UNKNOWN; |
536
|
|
|
|
|
|
|
} |
537
|
|
|
|
|
|
|
} |
538
|
|
|
|
|
|
|
|
539
|
|
|
|
|
|
|
#ifdef LIBSSH2_HOSTKEY_HASH_SHA256 |
540
|
|
|
|
|
|
|
key = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA256); |
541
|
|
|
|
|
|
|
if (key != NULL) { |
542
|
|
|
|
|
|
|
cert.type |= GIT_CERT_SSH_SHA256; |
543
|
|
|
|
|
|
|
memcpy(&cert.hash_sha256, key, 32); |
544
|
|
|
|
|
|
|
} |
545
|
|
|
|
|
|
|
#endif |
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
key = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1); |
548
|
|
|
|
|
|
|
if (key != NULL) { |
549
|
|
|
|
|
|
|
cert.type |= GIT_CERT_SSH_SHA1; |
550
|
|
|
|
|
|
|
memcpy(&cert.hash_sha1, key, 20); |
551
|
|
|
|
|
|
|
} |
552
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
key = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_MD5); |
554
|
|
|
|
|
|
|
if (key != NULL) { |
555
|
|
|
|
|
|
|
cert.type |= GIT_CERT_SSH_MD5; |
556
|
|
|
|
|
|
|
memcpy(&cert.hash_md5, key, 16); |
557
|
|
|
|
|
|
|
} |
558
|
|
|
|
|
|
|
|
559
|
|
|
|
|
|
|
if (cert.type == 0) { |
560
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "unable to get the host key"); |
561
|
|
|
|
|
|
|
error = -1; |
562
|
|
|
|
|
|
|
goto done; |
563
|
|
|
|
|
|
|
} |
564
|
|
|
|
|
|
|
|
565
|
|
|
|
|
|
|
/* We don't currently trust any hostkeys */ |
566
|
|
|
|
|
|
|
git_error_clear(); |
567
|
|
|
|
|
|
|
|
568
|
|
|
|
|
|
|
cert_ptr = &cert; |
569
|
|
|
|
|
|
|
|
570
|
|
|
|
|
|
|
error = t->owner->connect_opts.callbacks.certificate_check( |
571
|
|
|
|
|
|
|
(git_cert *)cert_ptr, |
572
|
|
|
|
|
|
|
0, |
573
|
|
|
|
|
|
|
s->url.host, |
574
|
|
|
|
|
|
|
t->owner->connect_opts.callbacks.payload); |
575
|
|
|
|
|
|
|
|
576
|
|
|
|
|
|
|
if (error < 0 && error != GIT_PASSTHROUGH) { |
577
|
|
|
|
|
|
|
if (!git_error_last()) |
578
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_NET, "user cancelled hostkey check"); |
579
|
|
|
|
|
|
|
|
580
|
|
|
|
|
|
|
goto done; |
581
|
|
|
|
|
|
|
} |
582
|
|
|
|
|
|
|
} |
583
|
|
|
|
|
|
|
|
584
|
|
|
|
|
|
|
/* we need the username to ask for auth methods */ |
585
|
|
|
|
|
|
|
if (!s->url.username) { |
586
|
|
|
|
|
|
|
if ((error = request_creds(&cred, t, NULL, GIT_CREDENTIAL_USERNAME)) < 0) |
587
|
|
|
|
|
|
|
goto done; |
588
|
|
|
|
|
|
|
|
589
|
|
|
|
|
|
|
s->url.username = git__strdup(((git_credential_username *) cred)->username); |
590
|
|
|
|
|
|
|
cred->free(cred); |
591
|
|
|
|
|
|
|
cred = NULL; |
592
|
|
|
|
|
|
|
if (!s->url.username) |
593
|
|
|
|
|
|
|
goto done; |
594
|
|
|
|
|
|
|
} else if (s->url.username && s->url.password) { |
595
|
|
|
|
|
|
|
if ((error = git_credential_userpass_plaintext_new(&cred, s->url.username, s->url.password)) < 0) |
596
|
|
|
|
|
|
|
goto done; |
597
|
|
|
|
|
|
|
} |
598
|
|
|
|
|
|
|
|
599
|
|
|
|
|
|
|
if ((error = list_auth_methods(&auth_methods, session, s->url.username)) < 0) |
600
|
|
|
|
|
|
|
goto done; |
601
|
|
|
|
|
|
|
|
602
|
|
|
|
|
|
|
error = GIT_EAUTH; |
603
|
|
|
|
|
|
|
/* if we already have something to try */ |
604
|
|
|
|
|
|
|
if (cred && auth_methods & cred->credtype) |
605
|
|
|
|
|
|
|
error = _git_ssh_authenticate_session(session, cred); |
606
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
while (error == GIT_EAUTH) { |
608
|
|
|
|
|
|
|
if (cred) { |
609
|
|
|
|
|
|
|
cred->free(cred); |
610
|
|
|
|
|
|
|
cred = NULL; |
611
|
|
|
|
|
|
|
} |
612
|
|
|
|
|
|
|
|
613
|
|
|
|
|
|
|
if ((error = request_creds(&cred, t, s->url.username, auth_methods)) < 0) |
614
|
|
|
|
|
|
|
goto done; |
615
|
|
|
|
|
|
|
|
616
|
|
|
|
|
|
|
if (strcmp(s->url.username, git_credential_get_username(cred))) { |
617
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "username does not match previous request"); |
618
|
|
|
|
|
|
|
error = -1; |
619
|
|
|
|
|
|
|
goto done; |
620
|
|
|
|
|
|
|
} |
621
|
|
|
|
|
|
|
|
622
|
|
|
|
|
|
|
error = _git_ssh_authenticate_session(session, cred); |
623
|
|
|
|
|
|
|
|
624
|
|
|
|
|
|
|
if (error == GIT_EAUTH) { |
625
|
|
|
|
|
|
|
/* refresh auth methods */ |
626
|
|
|
|
|
|
|
if ((error = list_auth_methods(&auth_methods, session, s->url.username)) < 0) |
627
|
|
|
|
|
|
|
goto done; |
628
|
|
|
|
|
|
|
else |
629
|
|
|
|
|
|
|
error = GIT_EAUTH; |
630
|
|
|
|
|
|
|
} |
631
|
|
|
|
|
|
|
} |
632
|
|
|
|
|
|
|
|
633
|
|
|
|
|
|
|
if (error < 0) |
634
|
|
|
|
|
|
|
goto done; |
635
|
|
|
|
|
|
|
|
636
|
|
|
|
|
|
|
channel = libssh2_channel_open_session(session); |
637
|
|
|
|
|
|
|
if (!channel) { |
638
|
|
|
|
|
|
|
error = -1; |
639
|
|
|
|
|
|
|
ssh_error(session, "Failed to open SSH channel"); |
640
|
|
|
|
|
|
|
goto done; |
641
|
|
|
|
|
|
|
} |
642
|
|
|
|
|
|
|
|
643
|
|
|
|
|
|
|
libssh2_channel_set_blocking(channel, 1); |
644
|
|
|
|
|
|
|
|
645
|
|
|
|
|
|
|
s->session = session; |
646
|
|
|
|
|
|
|
s->channel = channel; |
647
|
|
|
|
|
|
|
|
648
|
|
|
|
|
|
|
t->current_stream = s; |
649
|
|
|
|
|
|
|
|
650
|
|
|
|
|
|
|
done: |
651
|
|
|
|
|
|
|
if (error < 0) { |
652
|
|
|
|
|
|
|
ssh_stream_free(*stream); |
653
|
|
|
|
|
|
|
|
654
|
|
|
|
|
|
|
if (session) |
655
|
|
|
|
|
|
|
libssh2_session_free(session); |
656
|
|
|
|
|
|
|
} |
657
|
|
|
|
|
|
|
|
658
|
|
|
|
|
|
|
if (cred) |
659
|
|
|
|
|
|
|
cred->free(cred); |
660
|
|
|
|
|
|
|
|
661
|
|
|
|
|
|
|
return error; |
662
|
|
|
|
|
|
|
} |
663
|
|
|
|
|
|
|
|
664
|
|
|
|
|
|
|
static int ssh_uploadpack_ls( |
665
|
|
|
|
|
|
|
ssh_subtransport *t, |
666
|
|
|
|
|
|
|
const char *url, |
667
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream) |
668
|
|
|
|
|
|
|
{ |
669
|
|
|
|
|
|
|
const char *cmd = t->cmd_uploadpack ? t->cmd_uploadpack : cmd_uploadpack; |
670
|
|
|
|
|
|
|
|
671
|
|
|
|
|
|
|
return _git_ssh_setup_conn(t, url, cmd, stream); |
672
|
|
|
|
|
|
|
} |
673
|
|
|
|
|
|
|
|
674
|
|
|
|
|
|
|
static int ssh_uploadpack( |
675
|
|
|
|
|
|
|
ssh_subtransport *t, |
676
|
|
|
|
|
|
|
const char *url, |
677
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream) |
678
|
|
|
|
|
|
|
{ |
679
|
|
|
|
|
|
|
GIT_UNUSED(url); |
680
|
|
|
|
|
|
|
|
681
|
|
|
|
|
|
|
if (t->current_stream) { |
682
|
|
|
|
|
|
|
*stream = &t->current_stream->parent; |
683
|
|
|
|
|
|
|
return 0; |
684
|
|
|
|
|
|
|
} |
685
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_NET, "must call UPLOADPACK_LS before UPLOADPACK"); |
687
|
|
|
|
|
|
|
return -1; |
688
|
|
|
|
|
|
|
} |
689
|
|
|
|
|
|
|
|
690
|
|
|
|
|
|
|
static int ssh_receivepack_ls( |
691
|
|
|
|
|
|
|
ssh_subtransport *t, |
692
|
|
|
|
|
|
|
const char *url, |
693
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream) |
694
|
|
|
|
|
|
|
{ |
695
|
|
|
|
|
|
|
const char *cmd = t->cmd_receivepack ? t->cmd_receivepack : cmd_receivepack; |
696
|
|
|
|
|
|
|
|
697
|
|
|
|
|
|
|
|
698
|
|
|
|
|
|
|
return _git_ssh_setup_conn(t, url, cmd, stream); |
699
|
|
|
|
|
|
|
} |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
static int ssh_receivepack( |
702
|
|
|
|
|
|
|
ssh_subtransport *t, |
703
|
|
|
|
|
|
|
const char *url, |
704
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream) |
705
|
|
|
|
|
|
|
{ |
706
|
|
|
|
|
|
|
GIT_UNUSED(url); |
707
|
|
|
|
|
|
|
|
708
|
|
|
|
|
|
|
if (t->current_stream) { |
709
|
|
|
|
|
|
|
*stream = &t->current_stream->parent; |
710
|
|
|
|
|
|
|
return 0; |
711
|
|
|
|
|
|
|
} |
712
|
|
|
|
|
|
|
|
713
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_NET, "must call RECEIVEPACK_LS before RECEIVEPACK"); |
714
|
|
|
|
|
|
|
return -1; |
715
|
|
|
|
|
|
|
} |
716
|
|
|
|
|
|
|
|
717
|
|
|
|
|
|
|
static int _ssh_action( |
718
|
|
|
|
|
|
|
git_smart_subtransport_stream **stream, |
719
|
|
|
|
|
|
|
git_smart_subtransport *subtransport, |
720
|
|
|
|
|
|
|
const char *url, |
721
|
|
|
|
|
|
|
git_smart_service_t action) |
722
|
|
|
|
|
|
|
{ |
723
|
|
|
|
|
|
|
ssh_subtransport *t = GIT_CONTAINER_OF(subtransport, ssh_subtransport, parent); |
724
|
|
|
|
|
|
|
|
725
|
|
|
|
|
|
|
switch (action) { |
726
|
|
|
|
|
|
|
case GIT_SERVICE_UPLOADPACK_LS: |
727
|
|
|
|
|
|
|
return ssh_uploadpack_ls(t, url, stream); |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
case GIT_SERVICE_UPLOADPACK: |
730
|
|
|
|
|
|
|
return ssh_uploadpack(t, url, stream); |
731
|
|
|
|
|
|
|
|
732
|
|
|
|
|
|
|
case GIT_SERVICE_RECEIVEPACK_LS: |
733
|
|
|
|
|
|
|
return ssh_receivepack_ls(t, url, stream); |
734
|
|
|
|
|
|
|
|
735
|
|
|
|
|
|
|
case GIT_SERVICE_RECEIVEPACK: |
736
|
|
|
|
|
|
|
return ssh_receivepack(t, url, stream); |
737
|
|
|
|
|
|
|
} |
738
|
|
|
|
|
|
|
|
739
|
|
|
|
|
|
|
*stream = NULL; |
740
|
|
|
|
|
|
|
return -1; |
741
|
|
|
|
|
|
|
} |
742
|
|
|
|
|
|
|
|
743
|
|
|
|
|
|
|
static int _ssh_close(git_smart_subtransport *subtransport) |
744
|
|
|
|
|
|
|
{ |
745
|
|
|
|
|
|
|
ssh_subtransport *t = GIT_CONTAINER_OF(subtransport, ssh_subtransport, parent); |
746
|
|
|
|
|
|
|
|
747
|
|
|
|
|
|
|
GIT_ASSERT(!t->current_stream); |
748
|
|
|
|
|
|
|
|
749
|
|
|
|
|
|
|
GIT_UNUSED(t); |
750
|
|
|
|
|
|
|
|
751
|
|
|
|
|
|
|
return 0; |
752
|
|
|
|
|
|
|
} |
753
|
|
|
|
|
|
|
|
754
|
|
|
|
|
|
|
static void _ssh_free(git_smart_subtransport *subtransport) |
755
|
|
|
|
|
|
|
{ |
756
|
|
|
|
|
|
|
ssh_subtransport *t = GIT_CONTAINER_OF(subtransport, ssh_subtransport, parent); |
757
|
|
|
|
|
|
|
|
758
|
|
|
|
|
|
|
git__free(t->cmd_uploadpack); |
759
|
|
|
|
|
|
|
git__free(t->cmd_receivepack); |
760
|
|
|
|
|
|
|
git__free(t); |
761
|
|
|
|
|
|
|
} |
762
|
|
|
|
|
|
|
|
763
|
|
|
|
|
|
|
#define SSH_AUTH_PUBLICKEY "publickey" |
764
|
|
|
|
|
|
|
#define SSH_AUTH_PASSWORD "password" |
765
|
|
|
|
|
|
|
#define SSH_AUTH_KEYBOARD_INTERACTIVE "keyboard-interactive" |
766
|
|
|
|
|
|
|
|
767
|
|
|
|
|
|
|
static int list_auth_methods(int *out, LIBSSH2_SESSION *session, const char *username) |
768
|
|
|
|
|
|
|
{ |
769
|
|
|
|
|
|
|
const char *list, *ptr; |
770
|
|
|
|
|
|
|
|
771
|
|
|
|
|
|
|
*out = 0; |
772
|
|
|
|
|
|
|
|
773
|
|
|
|
|
|
|
list = libssh2_userauth_list(session, username, strlen(username)); |
774
|
|
|
|
|
|
|
|
775
|
|
|
|
|
|
|
/* either error, or the remote accepts NONE auth, which is bizarre, let's punt */ |
776
|
|
|
|
|
|
|
if (list == NULL && !libssh2_userauth_authenticated(session)) { |
777
|
|
|
|
|
|
|
ssh_error(session, "Failed to retrieve list of SSH authentication methods"); |
778
|
|
|
|
|
|
|
return GIT_EAUTH; |
779
|
|
|
|
|
|
|
} |
780
|
|
|
|
|
|
|
|
781
|
|
|
|
|
|
|
ptr = list; |
782
|
|
|
|
|
|
|
while (ptr) { |
783
|
|
|
|
|
|
|
if (*ptr == ',') |
784
|
|
|
|
|
|
|
ptr++; |
785
|
|
|
|
|
|
|
|
786
|
|
|
|
|
|
|
if (!git__prefixcmp(ptr, SSH_AUTH_PUBLICKEY)) { |
787
|
|
|
|
|
|
|
*out |= GIT_CREDENTIAL_SSH_KEY; |
788
|
|
|
|
|
|
|
*out |= GIT_CREDENTIAL_SSH_CUSTOM; |
789
|
|
|
|
|
|
|
#ifdef GIT_SSH_MEMORY_CREDENTIALS |
790
|
|
|
|
|
|
|
*out |= GIT_CREDENTIAL_SSH_MEMORY; |
791
|
|
|
|
|
|
|
#endif |
792
|
|
|
|
|
|
|
ptr += strlen(SSH_AUTH_PUBLICKEY); |
793
|
|
|
|
|
|
|
continue; |
794
|
|
|
|
|
|
|
} |
795
|
|
|
|
|
|
|
|
796
|
|
|
|
|
|
|
if (!git__prefixcmp(ptr, SSH_AUTH_PASSWORD)) { |
797
|
|
|
|
|
|
|
*out |= GIT_CREDENTIAL_USERPASS_PLAINTEXT; |
798
|
|
|
|
|
|
|
ptr += strlen(SSH_AUTH_PASSWORD); |
799
|
|
|
|
|
|
|
continue; |
800
|
|
|
|
|
|
|
} |
801
|
|
|
|
|
|
|
|
802
|
|
|
|
|
|
|
if (!git__prefixcmp(ptr, SSH_AUTH_KEYBOARD_INTERACTIVE)) { |
803
|
|
|
|
|
|
|
*out |= GIT_CREDENTIAL_SSH_INTERACTIVE; |
804
|
|
|
|
|
|
|
ptr += strlen(SSH_AUTH_KEYBOARD_INTERACTIVE); |
805
|
|
|
|
|
|
|
continue; |
806
|
|
|
|
|
|
|
} |
807
|
|
|
|
|
|
|
|
808
|
|
|
|
|
|
|
/* Skip it if we don't know it */ |
809
|
|
|
|
|
|
|
ptr = strchr(ptr, ','); |
810
|
|
|
|
|
|
|
} |
811
|
|
|
|
|
|
|
|
812
|
|
|
|
|
|
|
return 0; |
813
|
|
|
|
|
|
|
} |
814
|
|
|
|
|
|
|
#endif |
815
|
|
|
|
|
|
|
|
816
|
0
|
|
|
|
|
|
int git_smart_subtransport_ssh( |
817
|
|
|
|
|
|
|
git_smart_subtransport **out, git_transport *owner, void *param) |
818
|
|
|
|
|
|
|
{ |
819
|
|
|
|
|
|
|
#ifdef GIT_SSH |
820
|
|
|
|
|
|
|
ssh_subtransport *t; |
821
|
|
|
|
|
|
|
|
822
|
|
|
|
|
|
|
GIT_ASSERT_ARG(out); |
823
|
|
|
|
|
|
|
|
824
|
|
|
|
|
|
|
GIT_UNUSED(param); |
825
|
|
|
|
|
|
|
|
826
|
|
|
|
|
|
|
t = git__calloc(sizeof(ssh_subtransport), 1); |
827
|
|
|
|
|
|
|
GIT_ERROR_CHECK_ALLOC(t); |
828
|
|
|
|
|
|
|
|
829
|
|
|
|
|
|
|
t->owner = (transport_smart *)owner; |
830
|
|
|
|
|
|
|
t->parent.action = _ssh_action; |
831
|
|
|
|
|
|
|
t->parent.close = _ssh_close; |
832
|
|
|
|
|
|
|
t->parent.free = _ssh_free; |
833
|
|
|
|
|
|
|
|
834
|
|
|
|
|
|
|
*out = (git_smart_subtransport *) t; |
835
|
|
|
|
|
|
|
return 0; |
836
|
|
|
|
|
|
|
#else |
837
|
0
|
|
|
|
|
|
GIT_UNUSED(owner); |
838
|
0
|
|
|
|
|
|
GIT_UNUSED(param); |
839
|
|
|
|
|
|
|
|
840
|
0
|
0
|
|
|
|
|
GIT_ASSERT_ARG(out); |
841
|
0
|
|
|
|
|
|
*out = NULL; |
842
|
|
|
|
|
|
|
|
843
|
0
|
|
|
|
|
|
git_error_set(GIT_ERROR_INVALID, "cannot create SSH transport. Library was built without SSH support"); |
844
|
0
|
|
|
|
|
|
return -1; |
845
|
|
|
|
|
|
|
#endif |
846
|
|
|
|
|
|
|
} |
847
|
|
|
|
|
|
|
|
848
|
0
|
|
|
|
|
|
int git_transport_ssh_with_paths(git_transport **out, git_remote *owner, void *payload) |
849
|
|
|
|
|
|
|
{ |
850
|
|
|
|
|
|
|
#ifdef GIT_SSH |
851
|
|
|
|
|
|
|
git_strarray *paths = (git_strarray *) payload; |
852
|
|
|
|
|
|
|
git_transport *transport; |
853
|
|
|
|
|
|
|
transport_smart *smart; |
854
|
|
|
|
|
|
|
ssh_subtransport *t; |
855
|
|
|
|
|
|
|
int error; |
856
|
|
|
|
|
|
|
git_smart_subtransport_definition ssh_definition = { |
857
|
|
|
|
|
|
|
git_smart_subtransport_ssh, |
858
|
|
|
|
|
|
|
0, /* no RPC */ |
859
|
|
|
|
|
|
|
NULL, |
860
|
|
|
|
|
|
|
}; |
861
|
|
|
|
|
|
|
|
862
|
|
|
|
|
|
|
if (paths->count != 2) { |
863
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "invalid ssh paths, must be two strings"); |
864
|
|
|
|
|
|
|
return GIT_EINVALIDSPEC; |
865
|
|
|
|
|
|
|
} |
866
|
|
|
|
|
|
|
|
867
|
|
|
|
|
|
|
if ((error = git_transport_smart(&transport, owner, &ssh_definition)) < 0) |
868
|
|
|
|
|
|
|
return error; |
869
|
|
|
|
|
|
|
|
870
|
|
|
|
|
|
|
smart = (transport_smart *) transport; |
871
|
|
|
|
|
|
|
t = (ssh_subtransport *) smart->wrapped; |
872
|
|
|
|
|
|
|
|
873
|
|
|
|
|
|
|
t->cmd_uploadpack = git__strdup(paths->strings[0]); |
874
|
|
|
|
|
|
|
GIT_ERROR_CHECK_ALLOC(t->cmd_uploadpack); |
875
|
|
|
|
|
|
|
t->cmd_receivepack = git__strdup(paths->strings[1]); |
876
|
|
|
|
|
|
|
GIT_ERROR_CHECK_ALLOC(t->cmd_receivepack); |
877
|
|
|
|
|
|
|
|
878
|
|
|
|
|
|
|
*out = transport; |
879
|
|
|
|
|
|
|
return 0; |
880
|
|
|
|
|
|
|
#else |
881
|
0
|
|
|
|
|
|
GIT_UNUSED(owner); |
882
|
0
|
|
|
|
|
|
GIT_UNUSED(payload); |
883
|
|
|
|
|
|
|
|
884
|
0
|
0
|
|
|
|
|
GIT_ASSERT_ARG(out); |
885
|
0
|
|
|
|
|
|
*out = NULL; |
886
|
|
|
|
|
|
|
|
887
|
0
|
|
|
|
|
|
git_error_set(GIT_ERROR_INVALID, "cannot create SSH transport. Library was built without SSH support"); |
888
|
0
|
|
|
|
|
|
return -1; |
889
|
|
|
|
|
|
|
#endif |
890
|
|
|
|
|
|
|
} |
891
|
|
|
|
|
|
|
|
892
|
|
|
|
|
|
|
#ifdef GIT_SSH |
893
|
|
|
|
|
|
|
static void shutdown_ssh(void) |
894
|
|
|
|
|
|
|
{ |
895
|
|
|
|
|
|
|
libssh2_exit(); |
896
|
|
|
|
|
|
|
} |
897
|
|
|
|
|
|
|
#endif |
898
|
|
|
|
|
|
|
|
899
|
87
|
|
|
|
|
|
int git_transport_ssh_global_init(void) |
900
|
|
|
|
|
|
|
{ |
901
|
|
|
|
|
|
|
#ifdef GIT_SSH |
902
|
|
|
|
|
|
|
if (libssh2_init(0) < 0) { |
903
|
|
|
|
|
|
|
git_error_set(GIT_ERROR_SSH, "unable to initialize libssh2"); |
904
|
|
|
|
|
|
|
return -1; |
905
|
|
|
|
|
|
|
} |
906
|
|
|
|
|
|
|
|
907
|
|
|
|
|
|
|
return git_runtime_shutdown_register(shutdown_ssh); |
908
|
|
|
|
|
|
|
|
909
|
|
|
|
|
|
|
#else |
910
|
|
|
|
|
|
|
|
911
|
|
|
|
|
|
|
/* Nothing to initialize */ |
912
|
87
|
|
|
|
|
|
return 0; |
913
|
|
|
|
|
|
|
|
914
|
|
|
|
|
|
|
#endif |
915
|
|
|
|
|
|
|
} |