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103 lines
2.2 KiB
103 lines
2.2 KiB
#include "cache.h" |
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#include "quote.h" |
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#include "exec_cmd.h" |
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#include "strbuf.h" |
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static int do_generic_cmd(const char *me, char *arg) |
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{ |
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const char *my_argv[4]; |
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setup_path(); |
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if (!arg || !(arg = sq_dequote(arg))) |
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die("bad argument"); |
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if (prefixcmp(me, "git-")) |
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die("bad command"); |
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my_argv[0] = me + 4; |
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my_argv[1] = arg; |
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my_argv[2] = NULL; |
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return execv_git_cmd(my_argv); |
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} |
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static int do_cvs_cmd(const char *me, char *arg) |
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{ |
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const char *cvsserver_argv[3] = { |
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"cvsserver", "server", NULL |
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}; |
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if (!arg || strcmp(arg, "server")) |
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die("git-cvsserver only handles server: %s", arg); |
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setup_path(); |
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return execv_git_cmd(cvsserver_argv); |
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} |
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static struct commands { |
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const char *name; |
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int (*exec)(const char *me, char *arg); |
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} cmd_list[] = { |
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{ "git-receive-pack", do_generic_cmd }, |
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{ "git-upload-pack", do_generic_cmd }, |
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{ "git-upload-archive", do_generic_cmd }, |
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{ "cvs", do_cvs_cmd }, |
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{ NULL }, |
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}; |
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int main(int argc, char **argv) |
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{ |
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char *prog; |
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struct commands *cmd; |
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int devnull_fd; |
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/* |
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* Always open file descriptors 0/1/2 to avoid clobbering files |
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* in die(). It also avoids not messing up when the pipes are |
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* dup'ed onto stdin/stdout/stderr in the child processes we spawn. |
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*/ |
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devnull_fd = open("/dev/null", O_RDWR); |
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while (devnull_fd >= 0 && devnull_fd <= 2) |
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devnull_fd = dup(devnull_fd); |
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if (devnull_fd == -1) |
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die("opening /dev/null failed (%s)", strerror(errno)); |
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close (devnull_fd); |
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/* |
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* Special hack to pretend to be a CVS server |
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*/ |
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if (argc == 2 && !strcmp(argv[1], "cvs server")) |
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argv--; |
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/* |
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* We do not accept anything but "-c" followed by "cmd arg", |
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* where "cmd" is a very limited subset of git commands. |
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*/ |
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else if (argc != 3 || strcmp(argv[1], "-c")) |
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die("What do you think I am? A shell?"); |
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prog = argv[2]; |
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if (!strncmp(prog, "git", 3) && isspace(prog[3])) |
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/* Accept "git foo" as if the caller said "git-foo". */ |
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prog[3] = '-'; |
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for (cmd = cmd_list ; cmd->name ; cmd++) { |
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int len = strlen(cmd->name); |
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char *arg; |
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if (strncmp(cmd->name, prog, len)) |
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continue; |
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arg = NULL; |
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switch (prog[len]) { |
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case '\0': |
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arg = NULL; |
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break; |
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case ' ': |
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arg = prog + len + 1; |
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break; |
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default: |
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continue; |
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} |
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exit(cmd->exec(cmd->name, arg)); |
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} |
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die("unrecognized command '%s'", prog); |
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}
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