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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "xwrap.h"
#include "socktool.h"
#include <arpa/inet.h>
#include <errno.h>
#include <inttypes.h>
#include <locale.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <time.h>
#include <unistd.h>
static int client_rw_cb (int fd[2], RasBuffer buf[2]) {
return true;
}
int main (int argc, char* argv[]) {
setlocale (LC_ALL, "");
tzset ();
const char* logincmd = isatty (STDIN_FILENO) ? "LOGINTTY\n" : "LOGIN\n";
const char* conn[2] = { NULL, NULL };
bool allowv4 = true;
bool allowv6 = true;
int conncnt = 0;
for (int i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
for (int j = 1; argv[i][j] != '\0'; j++) {
switch (argv[i][j]) {
case 't':
logincmd = "LOGINTTY\n";
break;
case 'T':
logincmd = "LOGIN\n";
break;
case 'I':
allowv4 = true;
allowv6 = true;
break;
case 'U':
allowv4 = false;
allowv6 = false;
break;
case '4':
allowv4 = true;
allowv6 = false;
break;
case '6':
allowv4 = false;
allowv6 = true;
break;
case 'h':
case '?':
case '-':
printf (
"Usage: %s [-46hItTU] host|file [port]\n"
" -h View this help message\n"
" -t Force pseudo terminal allocation\n"
" -T Disable pseudo terminal allocation\n"
" -U Connect to a UNIX-domain socket file\n"
" -I Connect to the Internet\n"
" -4 Try IPv4 only\n"
" -6 Try IPv6 only\n",
argv[0]);
return 0;
break;
default:
fprintf (stderr, "%s: -%c: unknown option\n", argv[0], argv[i][j]);
return 1;
}
}
} else {
if (conncnt >= 2) {
fprintf (stderr, "%s: %s: unknown argument\n", argv[0], argv[i]);
return 1;
}
conn[conncnt++] = argv[i];
}
}
if (allowv4 || allowv6) {
if (conn[0] == NULL) {
fprintf (stderr, "%s: host name is required\n", argv[0]);
return 1;
}
if (conn[1] == NULL) {
fprintf (stderr, "%s: port number is requried\n", argv[0]);
return 1;
}
} else {
if (conn[0] == NULL) {
fprintf (stderr, "%s: socket file name is required\n", argv[0]);
return 1;
}
}
int sockfd = -1;
if (allowv4 || allowv6) {
printf ("Getting information for host %s (service %s) ... ",
conn[0], conn[1]);
fflush (stdout);
struct addrinfo* iaddr;
struct addrinfo* result;
struct addrinfo hints;
memset (&hints, 0, sizeof (hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_ADDRCONFIG;
int gaierr = getaddrinfo (conn[0], conn[1], &hints, &result);
if (gaierr != 0) {
puts (gai_strerror (gaierr));
return 2;
} else {
puts ("OK");
}
bool connected = false;
for (iaddr = result; iaddr != NULL; iaddr = iaddr->ai_next) {
sockfd = socket (iaddr->ai_family, SOCK_STREAM, 0);
if (sockfd < 0) {
perror ("socket");
continue;
}
const size_t ipstrlen = xmax (INET_ADDRSTRLEN, INET6_ADDRSTRLEN);
char* ipstr = xmalloc (ipstrlen);
uint16_t ipport = ntohs (
iaddr->ai_family == AF_INET ?
SOCKADDR_IN (iaddr->ai_addr)->sin_port :
SOCKADDR_IN6 (iaddr->ai_addr)->sin6_port);
fputs ("Connecting to host ", stdout);
if (inet_ntop (
iaddr->ai_family,
iaddr->ai_family == AF_INET ?
(void*) &SOCKADDR_IN (iaddr->ai_addr)->sin_addr :
(void*) &SOCKADDR_IN6 (iaddr->ai_addr)->sin6_addr,
ipstr, ipstrlen) == NULL)
{
printf ("unknown, port %" PRIu16 " ... ", ipport);
} else {
printf ("%s, port %" PRIu16 " ... ", ipstr, ipport);
free (ipstr);
}
fflush (stdout);
if (connect (sockfd, iaddr->ai_addr, iaddr->ai_addrlen) < 0) {
puts (strerror (errno));
} else {
puts ("OK");
connected = true;
break;
}
}
if (result != NULL) {
freeaddrinfo (result);
}
if (!connected) {
return 3;
}
} else {
struct sockaddr_un uaddr;
socklen_t uaddrlen;
sockfd = socket (AF_UNIX, SOCK_STREAM, 0);
if (sockfd < 0) {
perror ("socket");
return 3;
}
printf ("Try to connect to UNIX-domain socket %s ... ", conn[0]);
fflush (stdout);
uaddrlen = sizeof (struct sockaddr_un);
SOCKADDR_UN (&uaddr)->sun_family = AF_UNIX;
strncpy (SOCKADDR_UN (&uaddr)->sun_path, conn[0],
uaddrlen - offsetof (struct sockaddr_un, sun_path) - 1);
if (connect (sockfd, SOCKADDR (&uaddr), uaddrlen) < 0) {
puts (strerror (errno));
return 3;
} else {
puts ("OK");
}
}
if (sockfd < 0) {
return 3;
}
ras_socktool_write_string (sockfd, logincmd, 0);
int fd[2] = { STDIN_FILENO, sockfd };
ras_socktool_exchange_data (fd, client_rw_cb);
shutdown (sockfd, SHUT_RDWR);
close (sockfd);
return 0;
}
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