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"
8static 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>...]";
13static 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 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 ref = alloc_ref(name);
36 oidcpy(&ref->old_oid, &oid);
37 (*nr)++;
38 ALLOC_GROW(*sought, *nr, *alloc);
39 (*sought)[*nr - 1] = ref;
40}
41int 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 enum protocol_version version;
58 fetch_if_missing = 0;
60 packet_trace_identity("fetch-pack");
62 memset(&args, 0, sizeof(args));
64 args.uploadpack = "git-upload-pack";
65 for (i = 1; i < argc && *argv[i] == '-'; i++) {
67 const char *arg = argv[i];
68 if (skip_prefix(arg, "--upload-pack=", &arg)) {
70 args.uploadpack = arg;
71 continue;
72 }
73 if (skip_prefix(arg, "--exec=", &arg)) {
74 args.uploadpack = arg;
75 continue;
76 }
77 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
78 args.quiet = 1;
79 continue;
80 }
81 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
82 args.lock_pack = args.keep_pack;
83 args.keep_pack = 1;
84 continue;
85 }
86 if (!strcmp("--thin", arg)) {
87 args.use_thin_pack = 1;
88 continue;
89 }
90 if (!strcmp("--include-tag", arg)) {
91 args.include_tag = 1;
92 continue;
93 }
94 if (!strcmp("--all", arg)) {
95 args.fetch_all = 1;
96 continue;
97 }
98 if (!strcmp("--stdin", arg)) {
99 args.stdin_refs = 1;
100 continue;
101 }
102 if (!strcmp("--diag-url", arg)) {
103 args.diag_url = 1;
104 continue;
105 }
106 if (!strcmp("-v", arg)) {
107 args.verbose = 1;
108 continue;
109 }
110 if (skip_prefix(arg, "--depth=", &arg)) {
111 args.depth = strtol(arg, NULL, 0);
112 continue;
113 }
114 if (skip_prefix(arg, "--shallow-since=", &arg)) {
115 args.deepen_since = xstrdup(arg);
116 continue;
117 }
118 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
119 string_list_append(&deepen_not, arg);
120 continue;
121 }
122 if (!strcmp(arg, "--deepen-relative")) {
123 args.deepen_relative = 1;
124 continue;
125 }
126 if (!strcmp("--no-progress", arg)) {
127 args.no_progress = 1;
128 continue;
129 }
130 if (!strcmp("--stateless-rpc", arg)) {
131 args.stateless_rpc = 1;
132 continue;
133 }
134 if (!strcmp("--lock-pack", arg)) {
135 args.lock_pack = 1;
136 pack_lockfile_ptr = &pack_lockfile;
137 continue;
138 }
139 if (!strcmp("--check-self-contained-and-connected", arg)) {
140 args.check_self_contained_and_connected = 1;
141 continue;
142 }
143 if (!strcmp("--cloning", arg)) {
144 args.cloning = 1;
145 continue;
146 }
147 if (!strcmp("--update-shallow", arg)) {
148 args.update_shallow = 1;
149 continue;
150 }
151 if (!strcmp("--from-promisor", arg)) {
152 args.from_promisor = 1;
153 continue;
154 }
155 if (!strcmp("--no-dependents", arg)) {
156 args.no_dependents = 1;
157 continue;
158 }
159 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
160 parse_list_objects_filter(&args.filter_options, arg);
161 continue;
162 }
163 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
164 list_objects_filter_set_no_filter(&args.filter_options);
165 continue;
166 }
167 usage(fetch_pack_usage);
168 }
169 if (deepen_not.nr)
170 args.deepen_not = &deepen_not;
171 if (i < argc)
173 dest = argv[i++];
174 else
175 usage(fetch_pack_usage);
176 /*
178 * Copy refs from cmdline to growable list, then append any
179 * refs from the standard input:
180 */
181 for (; i < argc; i++)
182 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
183 if (args.stdin_refs) {
184 if (args.stateless_rpc) {
185 /* in stateless RPC mode we use pkt-line to read
186 * from stdin, until we get a flush packet
187 */
188 for (;;) {
189 char *line = packet_read_line(0, NULL);
190 if (!line)
191 break;
192 add_sought_entry(&sought, &nr_sought, &alloc_sought, line);
193 }
194 }
195 else {
196 /* read from stdin one ref per line, until EOF */
197 struct strbuf line = STRBUF_INIT;
198 while (strbuf_getline_lf(&line, stdin) != EOF)
199 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
200 strbuf_release(&line);
201 }
202 }
203 if (args.stateless_rpc) {
205 conn = NULL;
206 fd[0] = 0;
207 fd[1] = 1;
208 } else {
209 int flags = args.verbose ? CONNECT_VERBOSE : 0;
210 if (args.diag_url)
211 flags |= CONNECT_DIAG_URL;
212 conn = git_connect(fd, dest, args.uploadpack,
213 flags);
214 if (!conn)
215 return args.diag_url ? 0 : 1;
216 }
217 packet_reader_init(&reader, fd[0], NULL, 0,
219 PACKET_READ_CHOMP_NEWLINE |
220 PACKET_READ_GENTLE_ON_EOF);
221 version = discover_version(&reader);
223 switch (version) {
224 case protocol_v2:
225 get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL);
226 break;
227 case protocol_v1:
228 case protocol_v0:
229 get_remote_heads(&reader, &ref, 0, NULL, &shallow);
230 break;
231 case protocol_unknown_version:
232 BUG("unknown protocol version");
233 }
234 ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
236 &shallow, pack_lockfile_ptr, version);
237 if (pack_lockfile) {
238 printf("lock %s\n", pack_lockfile);
239 fflush(stdout);
240 }
241 if (args.check_self_contained_and_connected &&
242 args.self_contained_and_connected) {
243 printf("connectivity-ok\n");
244 fflush(stdout);
245 }
246 close(fd[0]);
247 close(fd[1]);
248 if (finish_connect(conn))
249 return 1;
250 ret = !ref;
252 /*
254 * If the heads to pull were given, we should have consumed
255 * all of them by matching the remote. Otherwise, 'git fetch
256 * remote no-such-ref' would silently succeed without issuing
257 * an error.
258 */
259 ret |= report_unmatched_refs(sought, nr_sought);
260 while (ref) {
262 printf("%s %s\n",
263 oid_to_hex(&ref->old_oid), ref->name);
264 ref = ref->next;
265 }
266 return ret;
268}