/*
 * Connecting to an already running rvinterf process
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include <rvinterf/localsock.h>
#include <rvinterf/exitcodes.h>

char *socket_pathname = "/tmp/rvinterf_socket";
int sock;

connect_local_socket()
{
	/* local socket binding voodoo copied from osmocon */
	struct sockaddr_un local;
	unsigned int namelen;
	int rc;

	sock = socket(AF_UNIX, SOCK_STREAM, 0);
	if (sock < 0) {
		perror("socket(AF_UNIX, SOCK_STREAM, 0)");
		exit(ERROR_UNIX);
	}

	local.sun_family = AF_UNIX;
	strncpy(local.sun_path, socket_pathname, sizeof(local.sun_path));
	local.sun_path[sizeof(local.sun_path) - 1] = '\0';

	/* we use the same magic that X11 uses in Xtranssock.c for
	 * calculating the proper length of the sockaddr */
#if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
	local.sun_len = strlen(local.sun_path);
#endif
#if defined(BSD44SOCKETS) || defined(SUN_LEN)
	namelen = SUN_LEN(&local);
#else
	namelen = strlen(local.sun_path) +
		  offsetof(struct sockaddr_un, sun_path) + 1;
#endif

	rc = connect(sock, (struct sockaddr *) &local, namelen);
	if (rc != 0) {
		perror(socket_pathname);
		exit(ERROR_RVINTERF);
	}

	return(0);
}