FILE *
cairo_boilerplate_open_any2ppm (const char *filename,
int page,
unsigned int flags,
int (**close_cb) (FILE *))
{
char command[4096];
#if HAS_DAEMON
int sk;
struct sockaddr_un addr;
int len;
if (flags & CAIRO_BOILERPLATE_OPEN_NO_DAEMON)
goto POPEN;
if (! any2ppm_daemon_exists ()) {
if (system ("./any2ppm") != 0)
goto POPEN;
}
sk = socket (PF_UNIX, SOCK_STREAM, 0);
if (sk == -1)
goto POPEN;
memset (&addr, 0, sizeof (addr));
addr.sun_family = AF_UNIX;
strcpy (addr.sun_path, SOCKET_PATH);
if (connect (sk, (struct sockaddr *) &addr, sizeof (addr)) == -1) {
close (sk);
goto POPEN;
}
len = sprintf (command, "%s %d\n", filename, page);
if (write (sk, command, len) != len) {
close (sk);
goto POPEN;
}
*close_cb = fclose;
return fdopen (sk, "r");
POPEN:
#endif
*close_cb = pclose;
sprintf (command, "./any2ppm %s %d", filename, page);
return popen (command, "r");
}
static const char *
any2ppm_daemon (void)
{
int timeout = TIMEOUT;
struct pollfd pfd;
int sk, fd;
long flags;
struct sockaddr_un addr;
char *line = NULL;
size_t len = 0;
#ifdef SIGPIPE
signal (SIGPIPE, SIG_IGN);
#endif
/* XXX racy! */
if (getenv ("ANY2PPM_FORCE") == NULL && any2ppm_daemon_exists ())
return "any2ppm daemon already running";
unlink (SOCKET_PATH);
sk = socket (PF_UNIX, SOCK_STREAM, 0);
if (sk == -1)
return "unable to create socket";
memset (&addr, 0, sizeof (addr));
addr.sun_family = AF_UNIX;
strcpy (addr.sun_path, SOCKET_PATH);
if (bind (sk, (struct sockaddr *) &addr, sizeof (addr)) == -1) {
close (sk);
return "unable to bind socket";
}
flags = fcntl (sk, F_GETFL);
if (flags == -1 || fcntl (sk, F_SETFL, flags | O_NONBLOCK) == -1) {
close (sk);
return "unable to set socket to non-blocking";
}
if (listen (sk, 5) == -1) {
close (sk);
return "unable to listen on socket";
}
/* ready for client connection - detach from parent/terminal */
if (getenv ("ANY2PPM_NODAEMON") == NULL && daemonize () == -1) {
close (sk);
return "unable to detach from parent";
}
if (! write_pid_file ()) {
close (sk);
return "unable to write pid file";
}
if (getenv ("ANY2PPM_TIMEOUT") != NULL) {
timeout = atoi (getenv ("ANY2PPM_TIMEOUT"));
if (timeout == 0)
timeout = -1;
if (timeout > 0)
timeout *= 1000; /* convert env (in seconds) to milliseconds */
}
pfd.fd = sk;
pfd.events = POLLIN;
pfd.revents = 0; /* valgrind */
while (poll (&pfd, 1, timeout) > 0) {
while ((fd = accept (sk, NULL, NULL)) != -1) {
if (_getline (fd, &line, &len) != -1) {
char *argv[10];
if (split_line (line, argv, ARRAY_LENGTH (argv)) > 0) {
const char *err;
err = convert (argv, fd);
if (err != NULL) {
FILE *file = fopen (".any2ppm.errors", "a");
if (file != NULL) {
fprintf (file,
"Failed to convert '%s': %s\n",
argv[0], err);
fclose (file);
}
}
}
}
close (fd);
}
}
close (sk);
unlink (SOCKET_PATH);
unlink (SOCKET_PATH ".pid");
free (line);
return NULL;
}
