/** Entry point to tor-resolve */
int
main(int argc, char **argv)
{
uint32_t sockshost;
uint16_t socksport = 0, port_option = 0;
int isSocks4 = 0, isVerbose = 0, isReverse = 0;
char **arg;
int n_args;
tor_addr_t result;
char *result_hostname = NULL;
log_severity_list_t *s = tor_malloc_zero(sizeof(log_severity_list_t));
init_logging(1);
sandbox_disable_getaddrinfo_cache();
arg = &argv[1];
n_args = argc-1;
if (!n_args)
usage();
if (!strcmp(arg[0],"--version")) {
printf("Tor version %s.\n",VERSION);
return 0;
}
while (n_args && *arg[0] == '-') {
if (!strcmp("-v", arg[0]))
isVerbose = 1;
else if (!strcmp("-4", arg[0]))
isSocks4 = 1;
else if (!strcmp("-5", arg[0]))
isSocks4 = 0;
else if (!strcmp("-x", arg[0]))
isReverse = 1;
else if (!strcmp("-p", arg[0])) {
int p;
if (n_args < 2) {
fprintf(stderr, "No arguments given to -p\n");
usage();
}
p = atoi(arg[1]);
if (p<1 || p > 65535) {
fprintf(stderr, "-p requires a number between 1 and 65535\n");
usage();
}
port_option = (uint16_t) p;
++arg; /* skip the port */
--n_args;
} else {
fprintf(stderr, "Unrecognized flag '%s'\n", arg[0]);
usage();
}
++arg;
--n_args;
}
if (isSocks4 && isReverse) {
fprintf(stderr, "Reverse lookups not supported with SOCKS4a\n");
usage();
}
if (isVerbose)
set_log_severity_config(LOG_DEBUG, LOG_ERR, s);
else
set_log_severity_config(LOG_WARN, LOG_ERR, s);
add_stream_log(s, "<stderr>", fileno(stderr));
if (n_args == 1) {
log_debug(LD_CONFIG, "defaulting to localhost");
sockshost = 0x7f000001u; /* localhost */
if (port_option) {
log_debug(LD_CONFIG, "Using port %d", (int)port_option);
socksport = port_option;
} else {
log_debug(LD_CONFIG, "defaulting to port 9050");
socksport = 9050; /* 9050 */
}
} else if (n_args == 2) {
if (addr_port_lookup(LOG_WARN, arg[1], NULL, &sockshost, &socksport)<0) {
fprintf(stderr, "Couldn't parse/resolve address %s", arg[1]);
return 1;
}
if (socksport && port_option && socksport != port_option) {
log_warn(LD_CONFIG, "Conflicting ports; using %d, not %d",
(int)socksport, (int)port_option);
} else if (port_option) {
socksport = port_option;
} else if (!socksport) {
log_debug(LD_CONFIG, "defaulting to port 9050");
socksport = 9050;
}
} else {
usage();
}
if (network_init()<0) {
log_err(LD_BUG,"Error initializing network; exiting.");
return 1;
}
if (do_resolve(arg[0], sockshost, socksport, isReverse,
isSocks4 ? 4 : 5, &result,
&result_hostname))
return 1;
if (result_hostname) {
printf("%s\n", result_hostname);
} else {
printf("%s\n", fmt_addr(&result));
}
return 0;
}
static void * resolver_thread_root(void *threadid) {
do_resolve();
pthread_exit(NULL);
}
