protocol: introduce enum protocol_version value protocol_v2
[git] / builtin / upload-pack.c
1 #include "cache.h"
2 #include "builtin.h"
3 #include "exec_cmd.h"
4 #include "pkt-line.h"
5 #include "parse-options.h"
6 #include "protocol.h"
7 #include "upload-pack.h"
8
9 static const char * const upload_pack_usage[] = {
10         N_("git upload-pack [<options>] <dir>"),
11         NULL
12 };
13
14 int cmd_upload_pack(int argc, const char **argv, const char *prefix)
15 {
16         const char *dir;
17         int strict = 0;
18         struct upload_pack_options opts = { 0 };
19         struct option options[] = {
20                 OPT_BOOL(0, "stateless-rpc", &opts.stateless_rpc,
21                          N_("quit after a single request/response exchange")),
22                 OPT_BOOL(0, "advertise-refs", &opts.advertise_refs,
23                          N_("exit immediately after initial ref advertisement")),
24                 OPT_BOOL(0, "strict", &strict,
25                          N_("do not try <directory>/.git/ if <directory> is no Git directory")),
26                 OPT_INTEGER(0, "timeout", &opts.timeout,
27                             N_("interrupt transfer after <n> seconds of inactivity")),
28                 OPT_END()
29         };
30
31         packet_trace_identity("upload-pack");
32         check_replace_refs = 0;
33
34         argc = parse_options(argc, argv, NULL, options, upload_pack_usage, 0);
35
36         if (argc != 1)
37                 usage_with_options(upload_pack_usage, options);
38
39         if (opts.timeout)
40                 opts.daemon_mode = 1;
41
42         setup_path();
43
44         dir = argv[0];
45
46         if (!enter_repo(dir, strict))
47                 die("'%s' does not appear to be a git repository", dir);
48
49         switch (determine_protocol_version_server()) {
50         case protocol_v2:
51                 /*
52                  * fetch support for protocol v2 has not been implemented yet,
53                  * so ignore the request to use v2 and fallback to using v0.
54                  */
55                 upload_pack(&opts);
56                 break;
57         case protocol_v1:
58                 /*
59                  * v1 is just the original protocol with a version string,
60                  * so just fall through after writing the version string.
61                  */
62                 if (opts.advertise_refs || !opts.stateless_rpc)
63                         packet_write_fmt(1, "version 1\n");
64
65                 /* fallthrough */
66         case protocol_v0:
67                 upload_pack(&opts);
68                 break;
69         case protocol_unknown_version:
70                 BUG("unknown protocol version");
71         }
72
73         return 0;
74 }