summaryrefslogtreecommitdiff
path: root/shell.c
blob: 9826109d5b1b3746aea33dc6b7ebe7b6da19bd22 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
#include "cache.h"
#include "quote.h"
#include "exec_cmd.h"
#include "strbuf.h"
 
static int do_generic_cmd(const char *me, char *arg)
{
	const char *my_argv[4];
 
	if (!arg || !(arg = sq_dequote(arg)))
		die("bad argument");
	if (prefixcmp(me, "git-"))
		die("bad command");
 
	my_argv[0] = me + 4;
	my_argv[1] = arg;
	my_argv[2] = NULL;
 
	return execv_git_cmd(my_argv);
}
 
static int do_cvs_cmd(const char *me, char *arg)
{
	const char *cvsserver_argv[3] = {
		"cvsserver", "server", NULL
	};
 
	if (!arg || strcmp(arg, "server"))
		die("git-cvsserver only handles server: %s", arg);
 
	setup_path(NULL);
 
	return execv_git_cmd(cvsserver_argv);
}
 
 
static struct commands {
	const char *name;
	int (*exec)(const char *me, char *arg);
} cmd_list[] = {
	{ "git-receive-pack", do_generic_cmd },
	{ "git-upload-pack", do_generic_cmd },
	{ "cvs", do_cvs_cmd },
	{ NULL },
};
 
int main(int argc, char **argv)
{
	char *prog;
	struct commands *cmd;
 
	if (argc == 2 && !strcmp(argv[1], "cvs server"))
		argv--;
	/* We want to see "-c cmd args", and nothing else */
	else if (argc != 3 || strcmp(argv[1], "-c"))
		die("What do you think I am? A shell?");
 
	prog = argv[2];
	argv += 2;
	argc -= 2;
	for (cmd = cmd_list ; cmd->name ; cmd++) {
		int len = strlen(cmd->name);
		char *arg;
		if (strncmp(cmd->name, prog, len))
			continue;
		arg = NULL;
		switch (prog[len]) {
		case '\0':
			arg = NULL;
			break;
		case ' ':
			arg = prog + len + 1;
			break;
		default:
			continue;
		}
		exit(cmd->exec(cmd->name, arg));
	}
	die("unrecognized command '%s'", prog);
}