You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
1.5 KiB
79 lines
1.5 KiB
#include "cache.h" |
|
#include "rsh.h" |
|
#include "quote.h" |
|
|
|
#define COMMAND_SIZE 4096 |
|
|
|
int setup_connection(int *fd_in, int *fd_out, const char *remote_prog, |
|
char *url, int rmt_argc, char **rmt_argv) |
|
{ |
|
char *host; |
|
char *path; |
|
int sv[2]; |
|
int i; |
|
pid_t pid; |
|
struct strbuf cmd; |
|
|
|
if (!strcmp(url, "-")) { |
|
*fd_in = 0; |
|
*fd_out = 1; |
|
return 0; |
|
} |
|
|
|
host = strstr(url, "//"); |
|
if (host) { |
|
host += 2; |
|
path = strchr(host, '/'); |
|
} else { |
|
host = url; |
|
path = strchr(host, ':'); |
|
if (path) |
|
*(path++) = '\0'; |
|
} |
|
if (!path) { |
|
return error("Bad URL: %s", url); |
|
} |
|
|
|
/* $GIT_RSH <host> "env GIT_DIR=<path> <remote_prog> <args...>" */ |
|
strbuf_init(&cmd, COMMAND_SIZE); |
|
strbuf_addstr(&cmd, "env "); |
|
strbuf_addstr(&cmd, GIT_DIR_ENVIRONMENT "="); |
|
sq_quote_buf(&cmd, path); |
|
strbuf_addch(&cmd, ' '); |
|
sq_quote_buf(&cmd, remote_prog); |
|
|
|
for (i = 0 ; i < rmt_argc ; i++) { |
|
strbuf_addch(&cmd, ' '); |
|
sq_quote_buf(&cmd, rmt_argv[i]); |
|
} |
|
|
|
strbuf_addstr(&cmd, " -"); |
|
|
|
if (cmd.len >= COMMAND_SIZE) |
|
return error("Command line too long"); |
|
|
|
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) |
|
return error("Couldn't create socket"); |
|
|
|
pid = fork(); |
|
if (pid < 0) |
|
return error("Couldn't fork"); |
|
if (!pid) { |
|
const char *ssh, *ssh_basename; |
|
ssh = getenv("GIT_SSH"); |
|
if (!ssh) ssh = "ssh"; |
|
ssh_basename = strrchr(ssh, '/'); |
|
if (!ssh_basename) |
|
ssh_basename = ssh; |
|
else |
|
ssh_basename++; |
|
close(sv[1]); |
|
dup2(sv[0], 0); |
|
dup2(sv[0], 1); |
|
execlp(ssh, ssh_basename, host, cmd.buf, NULL); |
|
} |
|
close(sv[0]); |
|
*fd_in = sv[1]; |
|
*fd_out = sv[1]; |
|
return 0; |
|
}
|
|
|