send-pack: forbid pushing from a shallow repository
[git] / builtin / send-pack.c
1 #include "builtin.h"
2 #include "commit.h"
3 #include "refs.h"
4 #include "pkt-line.h"
5 #include "sideband.h"
6 #include "run-command.h"
7 #include "remote.h"
8 #include "connect.h"
9 #include "send-pack.h"
10 #include "quote.h"
11 #include "transport.h"
12 #include "version.h"
13 #include "sha1-array.h"
14
15 static const char send_pack_usage[] =
16 "git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
17 "  --all and explicit <ref> specification are mutually exclusive.";
18
19 static struct send_pack_args args;
20
21 static void print_helper_status(struct ref *ref)
22 {
23         struct strbuf buf = STRBUF_INIT;
24
25         for (; ref; ref = ref->next) {
26                 const char *msg = NULL;
27                 const char *res;
28
29                 switch(ref->status) {
30                 case REF_STATUS_NONE:
31                         res = "error";
32                         msg = "no match";
33                         break;
34
35                 case REF_STATUS_OK:
36                         res = "ok";
37                         break;
38
39                 case REF_STATUS_UPTODATE:
40                         res = "ok";
41                         msg = "up to date";
42                         break;
43
44                 case REF_STATUS_REJECT_NONFASTFORWARD:
45                         res = "error";
46                         msg = "non-fast forward";
47                         break;
48
49                 case REF_STATUS_REJECT_FETCH_FIRST:
50                         res = "error";
51                         msg = "fetch first";
52                         break;
53
54                 case REF_STATUS_REJECT_NEEDS_FORCE:
55                         res = "error";
56                         msg = "needs force";
57                         break;
58
59                 case REF_STATUS_REJECT_STALE:
60                         res = "error";
61                         msg = "stale info";
62                         break;
63
64                 case REF_STATUS_REJECT_ALREADY_EXISTS:
65                         res = "error";
66                         msg = "already exists";
67                         break;
68
69                 case REF_STATUS_REJECT_NODELETE:
70                 case REF_STATUS_REMOTE_REJECT:
71                         res = "error";
72                         break;
73
74                 case REF_STATUS_EXPECTING_REPORT:
75                 default:
76                         continue;
77                 }
78
79                 strbuf_reset(&buf);
80                 strbuf_addf(&buf, "%s %s", res, ref->name);
81                 if (ref->remote_status)
82                         msg = ref->remote_status;
83                 if (msg) {
84                         strbuf_addch(&buf, ' ');
85                         quote_two_c_style(&buf, "", msg, 0);
86                 }
87                 strbuf_addch(&buf, '\n');
88
89                 write_or_die(1, buf.buf, buf.len);
90         }
91         strbuf_release(&buf);
92 }
93
94 int cmd_send_pack(int argc, const char **argv, const char *prefix)
95 {
96         int i, nr_refspecs = 0;
97         const char **refspecs = NULL;
98         const char *remote_name = NULL;
99         struct remote *remote = NULL;
100         const char *dest = NULL;
101         int fd[2];
102         struct child_process *conn;
103         struct sha1_array extra_have = SHA1_ARRAY_INIT;
104         struct ref *remote_refs, *local_refs;
105         int ret;
106         int helper_status = 0;
107         int send_all = 0;
108         const char *receivepack = "git-receive-pack";
109         int flags;
110         unsigned int reject_reasons;
111         int progress = -1;
112         struct push_cas_option cas = {0};
113
114         argv++;
115         for (i = 1; i < argc; i++, argv++) {
116                 const char *arg = *argv;
117
118                 if (*arg == '-') {
119                         if (!prefixcmp(arg, "--receive-pack=")) {
120                                 receivepack = arg + 15;
121                                 continue;
122                         }
123                         if (!prefixcmp(arg, "--exec=")) {
124                                 receivepack = arg + 7;
125                                 continue;
126                         }
127                         if (!prefixcmp(arg, "--remote=")) {
128                                 remote_name = arg + 9;
129                                 continue;
130                         }
131                         if (!strcmp(arg, "--all")) {
132                                 send_all = 1;
133                                 continue;
134                         }
135                         if (!strcmp(arg, "--dry-run")) {
136                                 args.dry_run = 1;
137                                 continue;
138                         }
139                         if (!strcmp(arg, "--mirror")) {
140                                 args.send_mirror = 1;
141                                 continue;
142                         }
143                         if (!strcmp(arg, "--force")) {
144                                 args.force_update = 1;
145                                 continue;
146                         }
147                         if (!strcmp(arg, "--quiet")) {
148                                 args.quiet = 1;
149                                 continue;
150                         }
151                         if (!strcmp(arg, "--verbose")) {
152                                 args.verbose = 1;
153                                 continue;
154                         }
155                         if (!strcmp(arg, "--progress")) {
156                                 progress = 1;
157                                 continue;
158                         }
159                         if (!strcmp(arg, "--no-progress")) {
160                                 progress = 0;
161                                 continue;
162                         }
163                         if (!strcmp(arg, "--thin")) {
164                                 args.use_thin_pack = 1;
165                                 continue;
166                         }
167                         if (!strcmp(arg, "--stateless-rpc")) {
168                                 args.stateless_rpc = 1;
169                                 continue;
170                         }
171                         if (!strcmp(arg, "--helper-status")) {
172                                 helper_status = 1;
173                                 continue;
174                         }
175                         if (!strcmp(arg, "--" CAS_OPT_NAME)) {
176                                 if (parse_push_cas_option(&cas, NULL, 0) < 0)
177                                         exit(1);
178                                 continue;
179                         }
180                         if (!strcmp(arg, "--no-" CAS_OPT_NAME)) {
181                                 if (parse_push_cas_option(&cas, NULL, 1) < 0)
182                                         exit(1);
183                                 continue;
184                         }
185                         if (!prefixcmp(arg, "--" CAS_OPT_NAME "=")) {
186                                 if (parse_push_cas_option(&cas,
187                                                           strchr(arg, '=') + 1, 0) < 0)
188                                         exit(1);
189                                 continue;
190                         }
191                         usage(send_pack_usage);
192                 }
193                 if (!dest) {
194                         dest = arg;
195                         continue;
196                 }
197                 refspecs = (const char **) argv;
198                 nr_refspecs = argc - i;
199                 break;
200         }
201         if (!dest)
202                 usage(send_pack_usage);
203         /*
204          * --all and --mirror are incompatible; neither makes sense
205          * with any refspecs.
206          */
207         if ((refspecs && (send_all || args.send_mirror)) ||
208             (send_all && args.send_mirror))
209                 usage(send_pack_usage);
210
211         if (is_repository_shallow())
212                 die("attempt to push from a shallow repository");
213
214         if (remote_name) {
215                 remote = remote_get(remote_name);
216                 if (!remote_has_url(remote, dest)) {
217                         die("Destination %s is not a uri for %s",
218                             dest, remote_name);
219                 }
220         }
221
222         if (progress == -1)
223                 progress = !args.quiet && isatty(2);
224         args.progress = progress;
225
226         if (args.stateless_rpc) {
227                 conn = NULL;
228                 fd[0] = 0;
229                 fd[1] = 1;
230         } else {
231                 conn = git_connect(fd, dest, receivepack,
232                         args.verbose ? CONNECT_VERBOSE : 0);
233         }
234
235         get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL, &extra_have);
236
237         transport_verify_remote_names(nr_refspecs, refspecs);
238
239         local_refs = get_local_heads();
240
241         flags = MATCH_REFS_NONE;
242
243         if (send_all)
244                 flags |= MATCH_REFS_ALL;
245         if (args.send_mirror)
246                 flags |= MATCH_REFS_MIRROR;
247
248         /* match them up */
249         if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
250                 return -1;
251
252         if (!is_empty_cas(&cas))
253                 apply_push_cas(&cas, remote, remote_refs);
254
255         set_ref_status_for_push(remote_refs, args.send_mirror,
256                 args.force_update);
257
258         ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
259
260         if (helper_status)
261                 print_helper_status(remote_refs);
262
263         close(fd[1]);
264         close(fd[0]);
265
266         ret |= finish_connect(conn);
267
268         if (!helper_status)
269                 transport_print_push_status(dest, remote_refs, args.verbose, 0, &reject_reasons);
270
271         if (!args.dry_run && remote) {
272                 struct ref *ref;
273                 for (ref = remote_refs; ref; ref = ref->next)
274                         transport_update_tracking_ref(remote, ref, args.verbose);
275         }
276
277         if (!ret && !transport_refs_pushed(remote_refs))
278                 fprintf(stderr, "Everything up-to-date\n");
279
280         return ret;
281 }