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Commit | Line | Data |
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85023577 | 1 | #include "cache.h" |
f336af17 PA |
2 | #include "rsh.h" |
3 | #include "quote.h" | |
6eb7ed54 DB |
4 | |
5 | #define COMMAND_SIZE 4096 | |
6 | ||
86257aa3 | 7 | int setup_connection(int *fd_in, int *fd_out, const char *remote_prog, |
6eb7ed54 DB |
8 | char *url, int rmt_argc, char **rmt_argv) |
9 | { | |
10 | char *host; | |
11 | char *path; | |
12 | int sv[2]; | |
13 | char command[COMMAND_SIZE]; | |
14 | char *posn; | |
0de68d28 PA |
15 | int sizen; |
16 | int of; | |
6eb7ed54 | 17 | int i; |
c9bc159d | 18 | pid_t pid; |
6eb7ed54 DB |
19 | |
20 | if (!strcmp(url, "-")) { | |
21 | *fd_in = 0; | |
22 | *fd_out = 1; | |
23 | return 0; | |
24 | } | |
25 | ||
26 | host = strstr(url, "//"); | |
001d4a27 LT |
27 | if (host) { |
28 | host += 2; | |
29 | path = strchr(host, '/'); | |
30 | } else { | |
31 | host = url; | |
32 | path = strchr(host, ':'); | |
479346ad SV |
33 | if (path) |
34 | *(path++) = '\0'; | |
6eb7ed54 | 35 | } |
6eb7ed54 DB |
36 | if (!path) { |
37 | return error("Bad URL: %s", url); | |
38 | } | |
25738089 | 39 | /* $GIT_RSH <host> "env GIT_DIR=<path> <remote_prog> <args...>" */ |
0de68d28 PA |
40 | sizen = COMMAND_SIZE; |
41 | posn = command; | |
42 | of = 0; | |
43 | of |= add_to_string(&posn, &sizen, "env ", 0); | |
977ed47d | 44 | of |= add_to_string(&posn, &sizen, GIT_DIR_ENVIRONMENT "=", 0); |
0de68d28 PA |
45 | of |= add_to_string(&posn, &sizen, path, 1); |
46 | of |= add_to_string(&posn, &sizen, " ", 0); | |
47 | of |= add_to_string(&posn, &sizen, remote_prog, 1); | |
48 | ||
49 | for ( i = 0 ; i < rmt_argc ; i++ ) { | |
50 | of |= add_to_string(&posn, &sizen, " ", 0); | |
51 | of |= add_to_string(&posn, &sizen, rmt_argv[i], 1); | |
6eb7ed54 | 52 | } |
0de68d28 PA |
53 | |
54 | of |= add_to_string(&posn, &sizen, " -", 0); | |
55 | ||
56 | if ( of ) | |
57 | return error("Command line too long"); | |
58 | ||
59 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) | |
6eb7ed54 | 60 | return error("Couldn't create socket"); |
0de68d28 | 61 | |
c9bc159d PD |
62 | pid = fork(); |
63 | if (pid < 0) | |
64 | return error("Couldn't fork"); | |
65 | if (!pid) { | |
c7c81b3a JR |
66 | const char *ssh, *ssh_basename; |
67 | ssh = getenv("GIT_SSH"); | |
68 | if (!ssh) ssh = "ssh"; | |
69 | ssh_basename = strrchr(ssh, '/'); | |
4852f723 MS |
70 | if (!ssh_basename) |
71 | ssh_basename = ssh; | |
72 | else | |
73 | ssh_basename++; | |
6eb7ed54 DB |
74 | close(sv[1]); |
75 | dup2(sv[0], 0); | |
76 | dup2(sv[0], 1); | |
4852f723 | 77 | execlp(ssh, ssh_basename, host, command, NULL); |
6eb7ed54 DB |
78 | } |
79 | close(sv[0]); | |
80 | *fd_in = sv[1]; | |
81 | *fd_out = sv[1]; | |
82 | return 0; | |
83 | } |