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Commit | Line | Data |
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35eb2d36 LT |
1 | #include "cache.h" |
2 | #include "quote.h" | |
77cb17e9 | 3 | #include "exec_cmd.h" |
0c696fe7 | 4 | #include "strbuf.h" |
35eb2d36 LT |
5 | |
6 | static int do_generic_cmd(const char *me, char *arg) | |
7 | { | |
8 | const char *my_argv[4]; | |
9 | ||
e1464ca7 | 10 | setup_path(); |
ab5f8627 | 11 | if (!arg || !(arg = sq_dequote(arg))) |
35eb2d36 | 12 | die("bad argument"); |
cc44c765 | 13 | if (prefixcmp(me, "git-")) |
77cb17e9 | 14 | die("bad command"); |
35eb2d36 | 15 | |
77cb17e9 | 16 | my_argv[0] = me + 4; |
35eb2d36 LT |
17 | my_argv[1] = arg; |
18 | my_argv[2] = NULL; | |
19 | ||
9201c707 | 20 | return execv_git_cmd(my_argv); |
35eb2d36 LT |
21 | } |
22 | ||
0c696fe7 JS |
23 | static int do_cvs_cmd(const char *me, char *arg) |
24 | { | |
25 | const char *cvsserver_argv[3] = { | |
26 | "cvsserver", "server", NULL | |
27 | }; | |
0c696fe7 JS |
28 | |
29 | if (!arg || strcmp(arg, "server")) | |
30 | die("git-cvsserver only handles server: %s", arg); | |
31 | ||
e1464ca7 | 32 | setup_path(); |
0c696fe7 JS |
33 | return execv_git_cmd(cvsserver_argv); |
34 | } | |
35 | ||
36 | ||
35eb2d36 LT |
37 | static struct commands { |
38 | const char *name; | |
39 | int (*exec)(const char *me, char *arg); | |
40 | } cmd_list[] = { | |
41 | { "git-receive-pack", do_generic_cmd }, | |
42 | { "git-upload-pack", do_generic_cmd }, | |
0c696fe7 | 43 | { "cvs", do_cvs_cmd }, |
35eb2d36 LT |
44 | { NULL }, |
45 | }; | |
46 | ||
47 | int main(int argc, char **argv) | |
48 | { | |
49 | char *prog; | |
50 | struct commands *cmd; | |
0cfeed2e PB |
51 | int devnull_fd; |
52 | ||
53 | /* | |
54 | * Always open file descriptors 0/1/2 to avoid clobbering files | |
55 | * in die(). It also avoids not messing up when the pipes are | |
56 | * dup'ed onto stdin/stdout/stderr in the child processes we spawn. | |
57 | */ | |
58 | devnull_fd = open("/dev/null", O_RDWR); | |
59 | while (devnull_fd >= 0 && devnull_fd <= 2) | |
60 | devnull_fd = dup(devnull_fd); | |
61 | if (devnull_fd == -1) | |
62 | die("opening /dev/null failed (%s)", strerror(errno)); | |
63 | close (devnull_fd); | |
35eb2d36 | 64 | |
bc7c73e2 JH |
65 | /* |
66 | * Special hack to pretend to be a CVS server | |
67 | */ | |
0c696fe7 JS |
68 | if (argc == 2 && !strcmp(argv[1], "cvs server")) |
69 | argv--; | |
bc7c73e2 JH |
70 | |
71 | /* | |
72 | * We do not accept anything but "-c" followed by "cmd arg", | |
73 | * where "cmd" is a very limited subset of git commands. | |
74 | */ | |
0c696fe7 | 75 | else if (argc != 3 || strcmp(argv[1], "-c")) |
35eb2d36 LT |
76 | die("What do you think I am? A shell?"); |
77 | ||
78 | prog = argv[2]; | |
bc7c73e2 JH |
79 | if (!strncmp(prog, "git", 3) && isspace(prog[3])) |
80 | /* Accept "git foo" as if the caller said "git-foo". */ | |
81 | prog[3] = '-'; | |
82 | ||
35eb2d36 LT |
83 | for (cmd = cmd_list ; cmd->name ; cmd++) { |
84 | int len = strlen(cmd->name); | |
85 | char *arg; | |
86 | if (strncmp(cmd->name, prog, len)) | |
87 | continue; | |
88 | arg = NULL; | |
89 | switch (prog[len]) { | |
90 | case '\0': | |
91 | arg = NULL; | |
92 | break; | |
93 | case ' ': | |
94 | arg = prog + len + 1; | |
95 | break; | |
96 | default: | |
97 | continue; | |
98 | } | |
99 | exit(cmd->exec(cmd->name, arg)); | |
100 | } | |
101 | die("unrecognized command '%s'", prog); | |
102 | } |