Merge branch 'js/enhanced-version-info'
[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 #include "protocol.h"
8
9 static const char fetch_pack_usage[] =
10 "git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
11 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
12 "[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
13
14 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
15                              const char *name)
16 {
17         struct ref *ref;
18         struct object_id oid;
19
20         if (!get_oid_hex(name, &oid)) {
21                 if (name[GIT_SHA1_HEXSZ] == ' ') {
22                         /* <sha1> <ref>, find refname */
23                         name += GIT_SHA1_HEXSZ + 1;
24                 } else if (name[GIT_SHA1_HEXSZ] == '\0') {
25                         ; /* <sha1>, leave sha1 as name */
26                 } else {
27                         /* <ref>, clear cruft from oid */
28                         oidclr(&oid);
29                 }
30         } else {
31                 /* <ref>, clear cruft from get_oid_hex */
32                 oidclr(&oid);
33         }
34
35         ref = alloc_ref(name);
36         oidcpy(&ref->old_oid, &oid);
37         (*nr)++;
38         ALLOC_GROW(*sought, *nr, *alloc);
39         (*sought)[*nr - 1] = ref;
40 }
41
42 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
43 {
44         int i, ret;
45         struct ref *ref = NULL;
46         const char *dest = NULL;
47         struct ref **sought = NULL;
48         int nr_sought = 0, alloc_sought = 0;
49         int fd[2];
50         char *pack_lockfile = NULL;
51         char **pack_lockfile_ptr = NULL;
52         struct child_process *conn;
53         struct fetch_pack_args args;
54         struct oid_array shallow = OID_ARRAY_INIT;
55         struct string_list deepen_not = STRING_LIST_INIT_DUP;
56         struct packet_reader reader;
57
58         fetch_if_missing = 0;
59
60         packet_trace_identity("fetch-pack");
61
62         memset(&args, 0, sizeof(args));
63         args.uploadpack = "git-upload-pack";
64
65         for (i = 1; i < argc && *argv[i] == '-'; i++) {
66                 const char *arg = argv[i];
67
68                 if (skip_prefix(arg, "--upload-pack=", &arg)) {
69                         args.uploadpack = arg;
70                         continue;
71                 }
72                 if (skip_prefix(arg, "--exec=", &arg)) {
73                         args.uploadpack = arg;
74                         continue;
75                 }
76                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
77                         args.quiet = 1;
78                         continue;
79                 }
80                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
81                         args.lock_pack = args.keep_pack;
82                         args.keep_pack = 1;
83                         continue;
84                 }
85                 if (!strcmp("--thin", arg)) {
86                         args.use_thin_pack = 1;
87                         continue;
88                 }
89                 if (!strcmp("--include-tag", arg)) {
90                         args.include_tag = 1;
91                         continue;
92                 }
93                 if (!strcmp("--all", arg)) {
94                         args.fetch_all = 1;
95                         continue;
96                 }
97                 if (!strcmp("--stdin", arg)) {
98                         args.stdin_refs = 1;
99                         continue;
100                 }
101                 if (!strcmp("--diag-url", arg)) {
102                         args.diag_url = 1;
103                         continue;
104                 }
105                 if (!strcmp("-v", arg)) {
106                         args.verbose = 1;
107                         continue;
108                 }
109                 if (skip_prefix(arg, "--depth=", &arg)) {
110                         args.depth = strtol(arg, NULL, 0);
111                         continue;
112                 }
113                 if (skip_prefix(arg, "--shallow-since=", &arg)) {
114                         args.deepen_since = xstrdup(arg);
115                         continue;
116                 }
117                 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
118                         string_list_append(&deepen_not, arg);
119                         continue;
120                 }
121                 if (!strcmp(arg, "--deepen-relative")) {
122                         args.deepen_relative = 1;
123                         continue;
124                 }
125                 if (!strcmp("--no-progress", arg)) {
126                         args.no_progress = 1;
127                         continue;
128                 }
129                 if (!strcmp("--stateless-rpc", arg)) {
130                         args.stateless_rpc = 1;
131                         continue;
132                 }
133                 if (!strcmp("--lock-pack", arg)) {
134                         args.lock_pack = 1;
135                         pack_lockfile_ptr = &pack_lockfile;
136                         continue;
137                 }
138                 if (!strcmp("--check-self-contained-and-connected", arg)) {
139                         args.check_self_contained_and_connected = 1;
140                         continue;
141                 }
142                 if (!strcmp("--cloning", arg)) {
143                         args.cloning = 1;
144                         continue;
145                 }
146                 if (!strcmp("--update-shallow", arg)) {
147                         args.update_shallow = 1;
148                         continue;
149                 }
150                 if (!strcmp("--from-promisor", arg)) {
151                         args.from_promisor = 1;
152                         continue;
153                 }
154                 if (!strcmp("--no-dependents", arg)) {
155                         args.no_dependents = 1;
156                         continue;
157                 }
158                 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
159                         parse_list_objects_filter(&args.filter_options, arg);
160                         continue;
161                 }
162                 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
163                         list_objects_filter_set_no_filter(&args.filter_options);
164                         continue;
165                 }
166                 usage(fetch_pack_usage);
167         }
168         if (deepen_not.nr)
169                 args.deepen_not = &deepen_not;
170
171         if (i < argc)
172                 dest = argv[i++];
173         else
174                 usage(fetch_pack_usage);
175
176         /*
177          * Copy refs from cmdline to growable list, then append any
178          * refs from the standard input:
179          */
180         for (; i < argc; i++)
181                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
182         if (args.stdin_refs) {
183                 if (args.stateless_rpc) {
184                         /* in stateless RPC mode we use pkt-line to read
185                          * from stdin, until we get a flush packet
186                          */
187                         for (;;) {
188                                 char *line = packet_read_line(0, NULL);
189                                 if (!line)
190                                         break;
191                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
192                         }
193                 }
194                 else {
195                         /* read from stdin one ref per line, until EOF */
196                         struct strbuf line = STRBUF_INIT;
197                         while (strbuf_getline_lf(&line, stdin) != EOF)
198                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
199                         strbuf_release(&line);
200                 }
201         }
202
203         if (args.stateless_rpc) {
204                 conn = NULL;
205                 fd[0] = 0;
206                 fd[1] = 1;
207         } else {
208                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
209                 if (args.diag_url)
210                         flags |= CONNECT_DIAG_URL;
211                 conn = git_connect(fd, dest, args.uploadpack,
212                                    flags);
213                 if (!conn)
214                         return args.diag_url ? 0 : 1;
215         }
216
217         packet_reader_init(&reader, fd[0], NULL, 0,
218                            PACKET_READ_CHOMP_NEWLINE |
219                            PACKET_READ_GENTLE_ON_EOF);
220
221         switch (discover_version(&reader)) {
222         case protocol_v2:
223                 die("support for protocol v2 not implemented yet");
224         case protocol_v1:
225         case protocol_v0:
226                 get_remote_heads(&reader, &ref, 0, NULL, &shallow);
227                 break;
228         case protocol_unknown_version:
229                 BUG("unknown protocol version");
230         }
231
232         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
233                          &shallow, pack_lockfile_ptr, protocol_v0);
234         if (pack_lockfile) {
235                 printf("lock %s\n", pack_lockfile);
236                 fflush(stdout);
237         }
238         if (args.check_self_contained_and_connected &&
239             args.self_contained_and_connected) {
240                 printf("connectivity-ok\n");
241                 fflush(stdout);
242         }
243         close(fd[0]);
244         close(fd[1]);
245         if (finish_connect(conn))
246                 return 1;
247
248         ret = !ref;
249
250         /*
251          * If the heads to pull were given, we should have consumed
252          * all of them by matching the remote.  Otherwise, 'git fetch
253          * remote no-such-ref' would silently succeed without issuing
254          * an error.
255          */
256         ret |= report_unmatched_refs(sought, nr_sought);
257
258         while (ref) {
259                 printf("%s %s\n",
260                        oid_to_hex(&ref->old_oid), ref->name);
261                 ref = ref->next;
262         }
263
264         return ret;
265 }