*
* Contents:
*
- * main() - Run the named backend.
- * usage() - Show usage information.
- * walk_cb() - Show results of cupsSideChannelSNMPWalk...
+ * main() - Run the named backend.
+ * sigterm_handler() - Flag when we get SIGTERM.
+ * usage() - Show usage information.
+ * walk_cb() - Show results of cupsSideChannelSNMPWalk...
*/
/*
#include <fcntl.h>
#include <errno.h>
#include <sys/wait.h>
+#include <signal.h>
+
+
+/*
+ * Local globals...
+ */
+
+static int job_canceled = 0;
/*
* Local functions...
*/
+static void sigterm_handler(int sig);
static void usage(void);
static void walk_cb(const char *oid, const char *data, int datalen,
void *context);
char *argv[]) /* I - Command-line arguments */
{
int first_arg, /* First argument for backend */
+ do_cancel = 0, /* Simulate a cancel-job via SIGTERM */
do_ps = 0, /* Do PostScript query+test? */
do_pcl = 0, /* Do PCL query+test? */
do_side_tests = 0, /* Test side-channel ops? */
char scheme[255], /* Scheme in URI == backend */
backend[1024]; /* Backend path */
const char *serverbin; /* CUPS_SERVERBIN environment variable */
- int back_fds[2], /* Back-channel pipe */
+ int fd, /* Temporary file descriptor */
+ back_fds[2], /* Back-channel pipe */
side_fds[2], /* Side-channel socket */
data_fds[2], /* Data pipe */
+ back_pid = -1, /* Backend process ID */
+ data_pid = -1, /* Trickle process ID */
pid, /* Process ID */
status; /* Exit status */
first_arg ++)
if (!strcmp(argv[first_arg], "-d"))
show_log = 1;
+ else if (!strcmp(argv[first_arg], "-cancel"))
+ do_cancel = 1;
else if (!strcmp(argv[first_arg], "-pcl"))
do_pcl = 1;
else if (!strcmp(argv[first_arg], "-ps"))
* Execute the trickle process as needed...
*/
- if (do_trickle || do_pcl || do_ps)
+ if (do_trickle || do_pcl || do_ps || do_cancel)
{
pipe(data_fds);
- if ((pid = fork()) == 0)
+ signal(SIGTERM, sigterm_handler);
+
+ if ((data_pid = fork()) == 0)
{
/*
* Trickle/query child comes here. Rearrange file descriptors so that
* FD 1, 3, and 4 point to the backend...
*/
- close(0);
- open("/dev/null", O_RDONLY);
+ if ((fd = open("/dev/null", O_RDONLY)) != 0)
+ {
+ dup2(fd, 0);
+ close(fd);
+ }
- close(1);
- dup(data_fds[1]);
+ if (data_fds[1] != 1)
+ {
+ dup2(data_fds[1], 1);
+ close(data_fds[1]);
+ }
close(data_fds[0]);
- close(data_fds[1]);
- close(3);
- dup(back_fds[0]);
- close(back_fds[0]);
+ if (back_fds[0] != 3)
+ {
+ dup2(back_fds[0], 3);
+ close(back_fds[0]);
+ }
close(back_fds[1]);
- close(4);
- dup(side_fds[0]);
- close(side_fds[0]);
+ if (side_fds[0] != 4)
+ {
+ dup2(side_fds[0], 4);
+ close(side_fds[0]);
+ }
close(side_fds[1]);
if (do_trickle)
sleep(1);
}
}
+ else if (do_cancel)
+ {
+ /*
+ * Write PS or PCL lines until we see SIGTERM...
+ */
+
+ int line = 0, page = 0; /* Current line and page */
+ ssize_t bytes; /* Number of bytes of response data */
+ char buffer[1024]; /* Output buffer */
+
+
+ if (do_pcl)
+ write(1, "\033E", 2);
+ else
+ write(1, "%!\n/Courier findfont 12 scalefont setfont 0 setgray\n", 52);
+
+ while (!job_canceled)
+ {
+ if (line == 0)
+ {
+ page ++;
+
+ if (do_pcl)
+ snprintf(buffer, sizeof(buffer), "PCL Page %d\r\n\r\n", page);
+ else
+ snprintf(buffer, sizeof(buffer),
+ "18 732 moveto (PS Page %d) show\n", page);
+
+ write(1, buffer, strlen(buffer));
+ }
+
+ line ++;
+
+ if (do_pcl)
+ snprintf(buffer, sizeof(buffer), "Line %d\r\n", line);
+ else
+ snprintf(buffer, sizeof(buffer), "18 %d moveto (Line %d) show\n",
+ 720 - line * 12, line);
+
+ write(1, buffer, strlen(buffer));
+
+ if (line >= 55)
+ {
+ /*
+ * Eject after 55 lines...
+ */
+
+ line = 0;
+ if (do_pcl)
+ write(1, "\014", 1);
+ else
+ write(1, "showpage\n", 9);
+ }
+
+ /*
+ * Check for back-channel data...
+ */
+
+ if ((bytes = cupsBackChannelRead(buffer, sizeof(buffer), 0)) > 0)
+ write(2, buffer, bytes);
+
+ /*
+ * Throttle output to ~100hz...
+ */
+
+ usleep(10000);
+ }
+
+ /*
+ * Eject current page with info...
+ */
+
+ if (do_pcl)
+ snprintf(buffer, sizeof(buffer),
+ "Canceled on line %d of page %d\r\n\014\033E", line, page);
+ else
+ snprintf(buffer, sizeof(buffer),
+ "\n18 %d moveto (Canceled on line %d of page %d)\nshowpage\n",
+ 720 - line * 12, line, page);
+
+ write(1, buffer, strlen(buffer));
+
+ /*
+ * See if we get any back-channel data...
+ */
+
+ while ((bytes = cupsBackChannelRead(buffer, sizeof(buffer), 5.0)) > 0)
+ write(2, buffer, bytes);
+
+ exit(0);
+ }
else
{
/*
exit(0);
}
- else if (pid < 0)
+ else if (data_pid < 0)
{
perror("testbackend: Unable to fork");
return (1);
* Execute the backend...
*/
- if ((pid = fork()) == 0)
+ if ((back_pid = fork()) == 0)
{
/*
* Child comes here...
*/
- if (do_trickle || do_ps)
+ if (do_trickle || do_ps || do_pcl || do_cancel)
{
- close(0);
- dup(data_fds[0]);
- close(data_fds[0]);
+ if (data_fds[0] != 0)
+ {
+ dup2(data_fds[0], 0);
+ close(data_fds[0]);
+ }
close(data_fds[1]);
}
if (!show_log)
{
- close(2);
- open("/dev/null", O_WRONLY);
+ if ((fd = open("/dev/null", O_WRONLY)) != 2)
+ {
+ dup2(fd, 2);
+ close(fd);
+ }
}
- close(3);
- dup(back_fds[1]);
- close(back_fds[0]);
+ if (back_fds[1] != 3)
+ {
+ dup2(back_fds[1], 3);
+ close(back_fds[0]);
+ }
close(back_fds[1]);
- close(4);
- dup(side_fds[1]);
- close(side_fds[0]);
+ if (side_fds[1] != 4)
+ {
+ dup2(side_fds[1], 4);
+ close(side_fds[0]);
+ }
close(side_fds[1]);
execv(backend, argv + first_arg);
strerror(errno));
return (errno);
}
- else if (pid < 0)
+ else if (back_pid < 0)
{
perror("testbackend: Unable to fork");
return (1);
* Parent comes here, setup back and side channel file descriptors...
*/
- if (do_trickle || do_ps)
+ if (do_trickle || do_ps || do_pcl || do_cancel)
{
close(data_fds[0]);
close(data_fds[1]);
}
- close(3);
- dup(back_fds[0]);
- close(back_fds[0]);
+ if (back_fds[0] != 3)
+ {
+ dup2(back_fds[0], 3);
+ close(back_fds[0]);
+ }
close(back_fds[1]);
- close(4);
- dup(side_fds[0]);
- close(side_fds[0]);
+ if (side_fds[0] != 4)
+ {
+ dup2(side_fds[0], 4);
+ close(side_fds[0]);
+ }
close(side_fds[1]);
/*
printf("CUPS_SC_CMD_SOFT_RESET returned %s\n", statuses[scstatus]);
}
- while (wait(&status) != pid);
-
- if (status)
+ if (do_cancel)
{
- if (WIFEXITED(status))
- printf("%s exited with status %d!\n", backend, WEXITSTATUS(status));
- else
- printf("%s crashed with signal %d!\n", backend, WTERMSIG(status));
+ sleep(1);
+ kill(data_pid, SIGTERM);
+ kill(back_pid, SIGTERM);
+ }
+
+ while ((pid = wait(&status)) > 0)
+ {
+ if (status)
+ {
+ if (WIFEXITED(status))
+ printf("%s exited with status %d!\n",
+ pid == back_pid ? backend : "test",
+ WEXITSTATUS(status));
+ else
+ printf("%s crashed with signal %d!\n",
+ pid == back_pid ? backend : "test",
+ WTERMSIG(status));
+ }
}
/*
}
+/*
+ * 'sigterm_handler()' - Flag when we get SIGTERM.
+ */
+
+static void
+sigterm_handler(int sig) /* I - Signal */
+{
+ (void)sig;
+
+ job_canceled = 1;
+}
+
+
/*
* 'usage()' - Show usage information.
*/
static void
usage(void)
{
- puts("Usage: testbackend [-d] [-ps] [-s [-oid OID] [-walk OID]] [-t] "
- "device-uri job-id user title copies options [file]");
+ puts("Usage: testbackend [-cancel] [-d] [-ps | -pcl] [-s [-oid OID] "
+ "[-walk OID]] [-t] device-uri job-id user title copies options [file]");
puts("");
puts("Options:");
+ puts(" -cancel Simulate a canceled print job after 2 seconds.");
puts(" -d Show log messages from backend.");
puts(" -oid OID Lookup the specified SNMP OID.");
puts(" (.1.3.6.1.2.1.43.10.2.1.4.1.1 is a good one for printers)");
projects / thirdparty / cups.git / blobdiff