builtin-shell.c

   1 #include "cache.h"
   2 #include "quote.h"
   3 #include "exec_cmd.h"
   4
   5 static int do_generic_cmd(const char *me, char *arg)
   6 {
   7         const char *my_argv[4];
   8
   9         if (!arg || !(arg = sq_dequote(arg)))
  10                 die("bad argument");
  11         if (prefixcmp(me, "git-"))
  12                 die("bad command");
  13
  14         my_argv[0] = me + 4;
  15         my_argv[1] = arg;
  16         my_argv[2] = NULL;
  17
  18         return execv_git_cmd(my_argv);
  19 }
  20
  21 static struct commands {
  22         const char *name;
  23         int (*exec)(const char *me, char *arg);
  24 } cmd_list[] = {
  25         { "git-receive-pack", do_generic_cmd },
  26         { "git-upload-pack", do_generic_cmd },
  27         { NULL },
  28 };
  29
  30 int cmd_shell(int argc, const char **argv, const char *prefix)
  31 {
  32         char *prog;
  33         struct commands *cmd;
  34
  35         /* We want to see "-c cmd args", and nothing else */
  36         if (argc != 3 || strcmp(argv[1], "-c"))
  37                 die("What do you think I am? A shell?");
  38
  39         prog = argv[2];
  40         argv += 2;
  41         argc -= 2;
  42         for (cmd = cmd_list ; cmd->name ; cmd++) {
  43                 int len = strlen(cmd->name);
  44                 char *arg;
  45                 if (strncmp(cmd->name, prog, len))
  46                         continue;
  47                 arg = NULL;
  48                 switch (prog[len]) {
  49                 case '\0':
  50                         arg = NULL;
  51                         break;
  52                 case ' ':
  53                         arg = prog + len + 1;
  54                         break;
  55                 default:
  56                         continue;
  57                 }
  58                 exit(cmd->exec(cmd->name, arg));
  59         }
  60         die("unrecognized command '%s'", prog);
  61 }