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 const char *p;
20 if (!parse_oid_hex(name, &oid, &p)) {
22 if (*p == ' ') {
23 /* <oid> <ref>, find refname */
24 name = p + 1;
25 } else if (*p == '\0') {
26 ; /* <oid>, leave oid as name */
27 } else {
28 /* <ref>, clear cruft from oid */
29 oidclr(&oid);
30 }
31 } else {
32 /* <ref>, clear cruft from get_oid_hex */
33 oidclr(&oid);
34 }
35 ref = alloc_ref(name);
37 oidcpy(&ref->old_oid, &oid);
38 (*nr)++;
39 ALLOC_GROW(*sought, *nr, *alloc);
40 (*sought)[*nr - 1] = ref;
41}
42int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
44{
45 int i, ret;
46 struct ref *ref = NULL;
47 const char *dest = NULL;
48 struct ref **sought = NULL;
49 int nr_sought = 0, alloc_sought = 0;
50 int fd[2];
51 char *pack_lockfile = NULL;
52 char **pack_lockfile_ptr = NULL;
53 struct child_process *conn;
54 struct fetch_pack_args args;
55 struct oid_array shallow = OID_ARRAY_INIT;
56 struct string_list deepen_not = STRING_LIST_INIT_DUP;
57 struct packet_reader reader;
58 enum protocol_version version;
59 fetch_if_missing = 0;
61 packet_trace_identity("fetch-pack");
63 memset(&args, 0, sizeof(args));
65 args.uploadpack = "git-upload-pack";
66 for (i = 1; i < argc && *argv[i] == '-'; i++) {
68 const char *arg = argv[i];
69 if (skip_prefix(arg, "--upload-pack=", &arg)) {
71 args.uploadpack = arg;
72 continue;
73 }
74 if (skip_prefix(arg, "--exec=", &arg)) {
75 args.uploadpack = arg;
76 continue;
77 }
78 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
79 args.quiet = 1;
80 continue;
81 }
82 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
83 args.lock_pack = args.keep_pack;
84 args.keep_pack = 1;
85 continue;
86 }
87 if (!strcmp("--thin", arg)) {
88 args.use_thin_pack = 1;
89 continue;
90 }
91 if (!strcmp("--include-tag", arg)) {
92 args.include_tag = 1;
93 continue;
94 }
95 if (!strcmp("--all", arg)) {
96 args.fetch_all = 1;
97 continue;
98 }
99 if (!strcmp("--stdin", arg)) {
100 args.stdin_refs = 1;
101 continue;
102 }
103 if (!strcmp("--diag-url", arg)) {
104 args.diag_url = 1;
105 continue;
106 }
107 if (!strcmp("-v", arg)) {
108 args.verbose = 1;
109 continue;
110 }
111 if (skip_prefix(arg, "--depth=", &arg)) {
112 args.depth = strtol(arg, NULL, 0);
113 continue;
114 }
115 if (skip_prefix(arg, "--shallow-since=", &arg)) {
116 args.deepen_since = xstrdup(arg);
117 continue;
118 }
119 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
120 string_list_append(&deepen_not, arg);
121 continue;
122 }
123 if (!strcmp(arg, "--deepen-relative")) {
124 args.deepen_relative = 1;
125 continue;
126 }
127 if (!strcmp("--no-progress", arg)) {
128 args.no_progress = 1;
129 continue;
130 }
131 if (!strcmp("--stateless-rpc", arg)) {
132 args.stateless_rpc = 1;
133 continue;
134 }
135 if (!strcmp("--lock-pack", arg)) {
136 args.lock_pack = 1;
137 pack_lockfile_ptr = &pack_lockfile;
138 continue;
139 }
140 if (!strcmp("--check-self-contained-and-connected", arg)) {
141 args.check_self_contained_and_connected = 1;
142 continue;
143 }
144 if (!strcmp("--cloning", arg)) {
145 args.cloning = 1;
146 continue;
147 }
148 if (!strcmp("--update-shallow", arg)) {
149 args.update_shallow = 1;
150 continue;
151 }
152 if (!strcmp("--from-promisor", arg)) {
153 args.from_promisor = 1;
154 continue;
155 }
156 if (!strcmp("--no-dependents", arg)) {
157 args.no_dependents = 1;
158 continue;
159 }
160 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
161 parse_list_objects_filter(&args.filter_options, arg);
162 continue;
163 }
164 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
165 list_objects_filter_set_no_filter(&args.filter_options);
166 continue;
167 }
168 usage(fetch_pack_usage);
169 }
170 if (deepen_not.nr)
171 args.deepen_not = &deepen_not;
172 if (i < argc)
174 dest = argv[i++];
175 else
176 usage(fetch_pack_usage);
177 /*
179 * Copy refs from cmdline to growable list, then append any
180 * refs from the standard input:
181 */
182 for (; i < argc; i++)
183 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
184 if (args.stdin_refs) {
185 if (args.stateless_rpc) {
186 /* in stateless RPC mode we use pkt-line to read
187 * from stdin, until we get a flush packet
188 */
189 for (;;) {
190 char *line = packet_read_line(0, NULL);
191 if (!line)
192 break;
193 add_sought_entry(&sought, &nr_sought, &alloc_sought, line);
194 }
195 }
196 else {
197 /* read from stdin one ref per line, until EOF */
198 struct strbuf line = STRBUF_INIT;
199 while (strbuf_getline_lf(&line, stdin) != EOF)
200 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
201 strbuf_release(&line);
202 }
203 }
204 if (args.stateless_rpc) {
206 conn = NULL;
207 fd[0] = 0;
208 fd[1] = 1;
209 } else {
210 int flags = args.verbose ? CONNECT_VERBOSE : 0;
211 if (args.diag_url)
212 flags |= CONNECT_DIAG_URL;
213 conn = git_connect(fd, dest, args.uploadpack,
214 flags);
215 if (!conn)
216 return args.diag_url ? 0 : 1;
217 }
218 packet_reader_init(&reader, fd[0], NULL, 0,
220 PACKET_READ_CHOMP_NEWLINE |
221 PACKET_READ_GENTLE_ON_EOF);
222 version = discover_version(&reader);
224 switch (version) {
225 case protocol_v2:
226 get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL);
227 break;
228 case protocol_v1:
229 case protocol_v0:
230 get_remote_heads(&reader, &ref, 0, NULL, &shallow);
231 break;
232 case protocol_unknown_version:
233 BUG("unknown protocol version");
234 }
235 ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
237 &shallow, pack_lockfile_ptr, version);
238 if (pack_lockfile) {
239 printf("lock %s\n", pack_lockfile);
240 fflush(stdout);
241 }
242 if (args.check_self_contained_and_connected &&
243 args.self_contained_and_connected) {
244 printf("connectivity-ok\n");
245 fflush(stdout);
246 }
247 close(fd[0]);
248 close(fd[1]);
249 if (finish_connect(conn))
250 return 1;
251 ret = !ref;
253 /*
255 * If the heads to pull were given, we should have consumed
256 * all of them by matching the remote. Otherwise, 'git fetch
257 * remote no-such-ref' would silently succeed without issuing
258 * an error.
259 */
260 ret |= report_unmatched_refs(sought, nr_sought);
261 while (ref) {
263 printf("%s %s\n",
264 oid_to_hex(&ref->old_oid), ref->name);
265 ref = ref->next;
266 }
267 return ret;
269}