int open_callmgr(struct in_addr inetaddr, int argc, char **argv, char **envp) {
/* Try to open unix domain socket to call manager. */
struct sockaddr_un where;
const int NUM_TRIES = 3;
int i, fd;
/* Open socket */
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
pptp_error("Could not create unix domain socket: %s", strerror(errno));
return(-1);
}
/* Make sure the socket is closed if callmgr is launched */
fcntl(fd, F_SETFD, FD_CLOEXEC);
/* Make address */
where.sun_family = AF_UNIX;
snprintf(where.sun_path, sizeof(where.sun_path),
PPTP_SOCKET_PREFIX "%s", inet_ntoa(inetaddr));
for (i=0; i<NUM_TRIES; i++) {
if (connect(fd, (struct sockaddr *) &where, sizeof(where)) < 0) {
/* couldn't connect. We'll have to launch this guy. */
launch_callmgr(inetaddr, argc,argv,envp);
sleep(3);
}
else return fd;
}
close(fd);
pptp_error("Could not launch call manager after %d tries.", i);
return -1; /* make gcc happy */
}
static int open_callmgr(int call_id,struct in_addr inetaddr, char *phonenr,int window)
{
/* Try to open unix domain socket to call manager. */
struct sockaddr_un where;
const int NUM_TRIES = 3;
int i, fd;
pid_t pid;
int status;
/* Open socket */
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
{
fatal("Could not create unix domain socket: %s", strerror(errno));
}
/* Make address */
callmgr_name_unixsock(&where, inetaddr, localbind);
for (i = 0; i < NUM_TRIES; i++)
{
if (connect(fd, (struct sockaddr *) &where, sizeof(where)) < 0)
{
/* couldn't connect. We'll have to launch this guy. */
unlink (where.sun_path);
/* fork and launch call manager process */
switch (pid = fork())
{
case -1: /* failure */
fatal("fork() to launch call manager failed.");
case 0: /* child */
{
close (fd);
close(pptp_fd);
/* close the pty and gre in the call manager */
//close(pty_fd);
//close(gre_fd);
launch_callmgr(call_id,inetaddr, phonenr,window);
}
default: /* parent */
waitpid(pid, &status, 0);
if (WIFEXITED(status))
status = WEXITSTATUS(status);
if (status!= 0)
{
close(fd);
error("Call manager exited with error %d", status);
return -1;
}
break;
}
sleep(1);
}
else return fd;
}
close(fd);
error("Could not launch call manager after %d tries.", i);
return -1; /* make gcc happy */
}
/*** start the call manager ***************************************************/
int open_callmgr(struct in_addr inetaddr, char *phonenr, int argc, char **argv,
char **envp, int pty_fd, int gre_fd)
{
/* Try to open unix domain socket to call manager. */
union {
struct sockaddr a;
struct sockaddr_un u;
} where;
const int NUM_TRIES = 3;
int i, fd;
pid_t pid;
int status;
/* Open socket */
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
fatal("Could not create unix domain socket: %s", strerror(errno));
}
/* Make address */
callmgr_name_unixsock(&where.u, inetaddr, localbind);
for (i = 0; i < NUM_TRIES; i++) {
if (connect(fd, &where.a, sizeof(where)) < 0) {
/* couldn't connect. We'll have to launch this guy. */
unlink (where.u.sun_path); /* FIXME: potential race condition */
/* fork and launch call manager process */
switch (pid = fork()) {
case -1: /* failure */
fatal("fork() to launch call manager failed.");
case 0: /* child */
{
close (fd);
/* close the pty and gre in the call manager */
close(pty_fd);
close(gre_fd);
launch_callmgr(inetaddr, phonenr, argc, argv, envp);
}
default: /* parent */
waitpid(pid, &status, 0);
if (WEXITSTATUS(status) != 0)
fatal("Call manager exited with error %d", status);
break;
}
sleep(1);
}
else return fd;
}
close(fd);
fatal("Could not launch call manager after %d tries.", i);
return -1; /* make gcc happy */
}