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