Merge branch 'da/mergetool-trust-exit-code'
[git] / builtin / fetch-pack.c
1 #include "builtin.h"
2 #include "pkt-line.h"
3 #include "fetch-pack.h"
4 #include "remote.h"
5 #include "connect.h"
6 #include "sha1-array.h"
7
8 static const char fetch_pack_usage[] =
9 "git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
10 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
11 "[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
12
13 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
14                              const char *name)
15 {
16         struct ref *ref;
17         struct object_id oid;
18
19         if (!get_oid_hex(name, &oid)) {
20                 if (name[GIT_SHA1_HEXSZ] == ' ') {
21                         /* <sha1> <ref>, find refname */
22                         name += GIT_SHA1_HEXSZ + 1;
23                 } else if (name[GIT_SHA1_HEXSZ] == '\0') {
24                         ; /* <sha1>, leave sha1 as name */
25                 } else {
26                         /* <ref>, clear cruft from oid */
27                         oidclr(&oid);
28                 }
29         } else {
30                 /* <ref>, clear cruft from get_oid_hex */
31                 oidclr(&oid);
32         }
33
34         ref = alloc_ref(name);
35         oidcpy(&ref->old_oid, &oid);
36         (*nr)++;
37         ALLOC_GROW(*sought, *nr, *alloc);
38         (*sought)[*nr - 1] = ref;
39 }
40
41 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
42 {
43         int i, ret;
44         struct ref *ref = NULL;
45         const char *dest = NULL;
46         struct ref **sought = NULL;
47         int nr_sought = 0, alloc_sought = 0;
48         int fd[2];
49         char *pack_lockfile = NULL;
50         char **pack_lockfile_ptr = NULL;
51         struct child_process *conn;
52         struct fetch_pack_args args;
53         struct sha1_array shallow = SHA1_ARRAY_INIT;
54         struct string_list deepen_not = STRING_LIST_INIT_DUP;
55
56         packet_trace_identity("fetch-pack");
57
58         memset(&args, 0, sizeof(args));
59         args.uploadpack = "git-upload-pack";
60
61         for (i = 1; i < argc && *argv[i] == '-'; i++) {
62                 const char *arg = argv[i];
63
64                 if (skip_prefix(arg, "--upload-pack=", &arg)) {
65                         args.uploadpack = arg;
66                         continue;
67                 }
68                 if (skip_prefix(arg, "--exec=", &arg)) {
69                         args.uploadpack = arg;
70                         continue;
71                 }
72                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
73                         args.quiet = 1;
74                         continue;
75                 }
76                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
77                         args.lock_pack = args.keep_pack;
78                         args.keep_pack = 1;
79                         continue;
80                 }
81                 if (!strcmp("--thin", arg)) {
82                         args.use_thin_pack = 1;
83                         continue;
84                 }
85                 if (!strcmp("--include-tag", arg)) {
86                         args.include_tag = 1;
87                         continue;
88                 }
89                 if (!strcmp("--all", arg)) {
90                         args.fetch_all = 1;
91                         continue;
92                 }
93                 if (!strcmp("--stdin", arg)) {
94                         args.stdin_refs = 1;
95                         continue;
96                 }
97                 if (!strcmp("--diag-url", arg)) {
98                         args.diag_url = 1;
99                         continue;
100                 }
101                 if (!strcmp("-v", arg)) {
102                         args.verbose = 1;
103                         continue;
104                 }
105                 if (skip_prefix(arg, "--depth=", &arg)) {
106                         args.depth = strtol(arg, NULL, 0);
107                         continue;
108                 }
109                 if (skip_prefix(arg, "--shallow-since=", &arg)) {
110                         args.deepen_since = xstrdup(arg);
111                         continue;
112                 }
113                 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
114                         string_list_append(&deepen_not, arg);
115                         continue;
116                 }
117                 if (!strcmp(arg, "--deepen-relative")) {
118                         args.deepen_relative = 1;
119                         continue;
120                 }
121                 if (!strcmp("--no-progress", arg)) {
122                         args.no_progress = 1;
123                         continue;
124                 }
125                 if (!strcmp("--stateless-rpc", arg)) {
126                         args.stateless_rpc = 1;
127                         continue;
128                 }
129                 if (!strcmp("--lock-pack", arg)) {
130                         args.lock_pack = 1;
131                         pack_lockfile_ptr = &pack_lockfile;
132                         continue;
133                 }
134                 if (!strcmp("--check-self-contained-and-connected", arg)) {
135                         args.check_self_contained_and_connected = 1;
136                         continue;
137                 }
138                 if (!strcmp("--cloning", arg)) {
139                         args.cloning = 1;
140                         continue;
141                 }
142                 if (!strcmp("--update-shallow", arg)) {
143                         args.update_shallow = 1;
144                         continue;
145                 }
146                 usage(fetch_pack_usage);
147         }
148         if (deepen_not.nr)
149                 args.deepen_not = &deepen_not;
150
151         if (i < argc)
152                 dest = argv[i++];
153         else
154                 usage(fetch_pack_usage);
155
156         /*
157          * Copy refs from cmdline to growable list, then append any
158          * refs from the standard input:
159          */
160         for (; i < argc; i++)
161                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
162         if (args.stdin_refs) {
163                 if (args.stateless_rpc) {
164                         /* in stateless RPC mode we use pkt-line to read
165                          * from stdin, until we get a flush packet
166                          */
167                         for (;;) {
168                                 char *line = packet_read_line(0, NULL);
169                                 if (!line)
170                                         break;
171                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
172                         }
173                 }
174                 else {
175                         /* read from stdin one ref per line, until EOF */
176                         struct strbuf line = STRBUF_INIT;
177                         while (strbuf_getline_lf(&line, stdin) != EOF)
178                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
179                         strbuf_release(&line);
180                 }
181         }
182
183         if (args.stateless_rpc) {
184                 conn = NULL;
185                 fd[0] = 0;
186                 fd[1] = 1;
187         } else {
188                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
189                 if (args.diag_url)
190                         flags |= CONNECT_DIAG_URL;
191                 conn = git_connect(fd, dest, args.uploadpack,
192                                    flags);
193                 if (!conn)
194                         return args.diag_url ? 0 : 1;
195         }
196         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
197
198         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
199                          &shallow, pack_lockfile_ptr);
200         if (pack_lockfile) {
201                 printf("lock %s\n", pack_lockfile);
202                 fflush(stdout);
203         }
204         if (args.check_self_contained_and_connected &&
205             args.self_contained_and_connected) {
206                 printf("connectivity-ok\n");
207                 fflush(stdout);
208         }
209         close(fd[0]);
210         close(fd[1]);
211         if (finish_connect(conn))
212                 return 1;
213
214         ret = !ref;
215
216         /*
217          * If the heads to pull were given, we should have consumed
218          * all of them by matching the remote.  Otherwise, 'git fetch
219          * remote no-such-ref' would silently succeed without issuing
220          * an error.
221          */
222         for (i = 0; i < nr_sought; i++) {
223                 if (!sought[i] || sought[i]->matched)
224                         continue;
225                 error("no such remote ref %s", sought[i]->name);
226                 ret = 1;
227         }
228
229         while (ref) {
230                 printf("%s %s\n",
231                        oid_to_hex(&ref->old_oid), ref->name);
232                 ref = ref->next;
233         }
234
235         return ret;
236 }