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#include "rsh.h"
#include <string.h>
#include <sys/socket.h>
#include "cache.h"
#define COMMAND_SIZE 4096
int setup_connection(int *fd_in, int *fd_out, char *remote_prog,
char *url, int rmt_argc, char **rmt_argv)
{
char *host;
char *path;
int sv[2];
char command[COMMAND_SIZE];
char *posn;
int i;
if (!strcmp(url, "-")) {
*fd_in = 0;
*fd_out = 1;
return 0;
}
host = strstr(url, "//");
if (!host) {
return error("Bad URL: %s", url);
}
host += 2;
path = strchr(host, '/');
if (!path) {
return error("Bad URL: %s", url);
}
*(path++) = '\0';
/* ssh <host> 'cd /<path>; stdio-pull <arg...> <commit-id>' */
snprintf(command, COMMAND_SIZE,
"cd /%s; SHA1_FILE_DIRECTORY=objects %s",
path, remote_prog);
posn = command + strlen(command);
for (i = 0; i < rmt_argc; i++) {
*(posn++) = ' ';
strncpy(posn, rmt_argv[i], COMMAND_SIZE - (posn - command));
posn += strlen(rmt_argv[i]);
if (posn - command + 4 >= COMMAND_SIZE) {
return error("Command line too long");
}
}
strcpy(posn, " -");
if (socketpair(AF_LOCAL, SOCK_STREAM, 0, sv)) {
return error("Couldn't create socket");
}
if (!fork()) {
close(sv[1]);
dup2(sv[0], 0);
dup2(sv[0], 1);
execlp("ssh", "ssh", host, command, NULL);
}
close(sv[0]);
*fd_in = sv[1];
*fd_out = sv[1];
return 0;
}
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