static void
process_children(void)
{
int status; /* Exit status of child */
int pid, /* Process ID of child */
job_id; /* Job ID of child */
cupsd_job_t *job; /* Current job */
int i; /* Looping var */
char name[1024]; /* Process name */
const char *type; /* Type of program */
cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()");
/*
* Reset the dead_children flag...
*/
dead_children = 0;
/*
* Collect the exit status of some children...
*/
#ifdef HAVE_WAITPID
while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
#elif defined(HAVE_WAIT3)
while ((pid = wait3(&status, WNOHANG, NULL)) > 0)
#else
if ((pid = wait(&status)) > 0)
#endif /* HAVE_WAITPID */
{
/*
* Collect the name of the process that finished...
*/
cupsdFinishProcess(pid, name, sizeof(name), &job_id);
/*
* Delete certificates for CGI processes...
*/
if (pid)
cupsdDeleteCert(pid);
/*
* Handle completed job filters...
*/
if (job_id > 0)
job = cupsdFindJob(job_id);
else
job = NULL;
if (job)
{
for (i = 0; job->filters[i]; i ++)
if (job->filters[i] == pid)
break;
if (job->filters[i] || job->backend == pid)
{
/*
* OK, this process has gone away; what's left?
*/
if (job->filters[i])
{
job->filters[i] = -pid;
type = "Filter";
}
else
{
job->backend = -pid;
type = "Backend";
}
if (status && status != SIGTERM && status != SIGKILL &&
status != SIGPIPE)
{
/*
* An error occurred; save the exit status so we know to stop
* the printer or cancel the job when all of the filters finish...
*
* A negative status indicates that the backend failed and the
* printer needs to be stopped.
*
* In order to preserve the most serious status, we always log
* when a process dies due to a signal (e.g. SIGABRT, SIGSEGV,
* and SIGBUS) and prefer to log the backend exit status over a
* filter's.
*/
int old_status = abs(job->status);
if (WIFSIGNALED(status) || /* This process crashed, or */
!job->status || /* No process had a status, or */
(!job->filters[i] && WIFEXITED(old_status)))
{ /* Backend and filter didn't crash */
if (job->filters[i])
job->status = status; /* Filter failed */
else
job->status = -status; /* Backend failed */
}
if (job->state_value == IPP_JOB_PROCESSING &&
job->status_level > CUPSD_LOG_ERROR &&
(job->filters[i] || !WIFEXITED(status)))
{
char message[1024]; /* New printer-state-message */
job->status_level = CUPSD_LOG_ERROR;
snprintf(message, sizeof(message), "%s failed", type);
if (job->printer)
{
strlcpy(job->printer->state_message, message,
sizeof(job->printer->state_message));
}
if (!job->attrs)
cupsdLoadJob(job);
if (!job->printer_message && job->attrs)
{
if ((job->printer_message =
ippFindAttribute(job->attrs, "job-printer-state-message",
IPP_TAG_TEXT)) == NULL)
job->printer_message = ippAddString(job->attrs, IPP_TAG_JOB,
IPP_TAG_TEXT,
"job-printer-state-message",
NULL, NULL);
}
if (job->printer_message)
cupsdSetString(&(job->printer_message->values[0].string.text),
message);
}
}
/*
* If this is not the last file in a job, see if all of the
* filters are done, and if so move to the next file.
*/
if (job->current_file < job->num_files && job->printer)
{
for (i = 0; job->filters[i] < 0; i ++);
if (!job->filters[i] &&
(!job->printer->pc || !job->printer->pc->single_file ||
job->backend <= 0))
{
/*
* Process the next file...
*/
cupsdContinueJob(job);
}
}
else if (job->state_value >= IPP_JOB_CANCELED)
{
/*
* Remove the job from the active list if there are no processes still
* running for it...
*/
for (i = 0; job->filters[i] < 0; i++);
if (!job->filters[i] && job->backend <= 0)
cupsArrayRemove(ActiveJobs, job);
}
}
}
/*
* Show the exit status as needed, ignoring SIGTERM and SIGKILL errors
* since they come when we kill/end a process...
*/
if (status == SIGTERM || status == SIGKILL)
{
cupsdLogJob(job, CUPSD_LOG_DEBUG,
"PID %d (%s) was terminated normally with signal %d.", pid,
name, status);
}
else if (status == SIGPIPE)
{
cupsdLogJob(job, CUPSD_LOG_DEBUG,
"PID %d (%s) did not catch or ignore signal %d.", pid, name,
status);
}
else if (status)
{
if (WIFEXITED(status))
{
int code = WEXITSTATUS(status); /* Exit code */
if (code > 100)
cupsdLogJob(job, CUPSD_LOG_DEBUG,
"PID %d (%s) stopped with status %d (%s)", pid, name,
code, strerror(code - 100));
else
cupsdLogJob(job, CUPSD_LOG_DEBUG,
"PID %d (%s) stopped with status %d.", pid, name, code);
}
else
cupsdLogJob(job, CUPSD_LOG_DEBUG, "PID %d (%s) crashed on signal %d.",
pid, name, WTERMSIG(status));
if (LogLevel < CUPSD_LOG_DEBUG)
cupsdLogJob(job, CUPSD_LOG_INFO,
"Hint: Try setting the LogLevel to \"debug\" to find out "
"more.");
}
else
cupsdLogJob(job, CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.",
pid, name);
}
/*
* If wait*() is interrupted by a signal, tell main() to call us again...
*/
if (pid < 0 && errno == EINTR)
dead_children = 1;
}
void
cupsdLoadAllSubscriptions(void)
{
int i; /* Looping var */
cups_file_t *fp; /* subscriptions.conf file */
int linenum; /* Current line number */
char line[1024], /* Line from file */
*value, /* Pointer to value */
*valueptr; /* Pointer into value */
cupsd_subscription_t *sub; /* Current subscription */
int hex; /* Non-zero if reading hex data */
int delete_sub; /* Delete subscription? */
/*
* Open the subscriptions.conf file...
*/
snprintf(line, sizeof(line), "%s/subscriptions.conf", ServerRoot);
if ((fp = cupsdOpenConfFile(line)) == NULL)
return;
/*
* Read all of the lines from the file...
*/
linenum = 0;
sub = NULL;
delete_sub = 0;
while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum))
{
if (!_cups_strcasecmp(line, "NextSubscriptionId") && value)
{
/*
* NextSubscriptionId NNN
*/
i = atoi(value);
if (i >= NextSubscriptionId && i > 0)
NextSubscriptionId = i;
}
else if (!_cups_strcasecmp(line, "<Subscription"))
{
/*
* <Subscription #>
*/
if (!sub && value && isdigit(value[0] & 255))
{
sub = cupsdAddSubscription(CUPSD_EVENT_NONE, NULL, NULL, NULL,
atoi(value));
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "</Subscription>"))
{
if (!sub)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
if (delete_sub)
cupsdDeleteSubscription(sub, 0);
sub = NULL;
delete_sub = 0;
}
else if (!sub)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
}
else if (!_cups_strcasecmp(line, "Events"))
{
/*
* Events name
* Events name name name ...
*/
if (!value)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
while (*value)
{
/*
* Separate event names...
*/
for (valueptr = value; !isspace(*valueptr) && *valueptr; valueptr ++);
while (isspace(*valueptr & 255))
*valueptr++ = '\0';
/*
* See if the name exists...
*/
if ((sub->mask |= cupsdEventValue(value)) == CUPSD_EVENT_NONE)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unknown event name \'%s\' on line %d of subscriptions.conf.",
value, linenum);
break;
}
value = valueptr;
}
}
else if (!_cups_strcasecmp(line, "Owner"))
{
/*
* Owner
*/
if (value)
cupsdSetString(&sub->owner, value);
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "Recipient"))
{
/*
* Recipient uri
*/
if (value)
cupsdSetString(&sub->recipient, value);
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "JobId"))
{
/*
* JobId #
*/
if (value && isdigit(*value & 255))
{
if ((sub->job = cupsdFindJob(atoi(value))) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Job %s not found on line %d of subscriptions.conf.",
value, linenum);
delete_sub = 1;
}
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "PrinterName"))
{
/*
* PrinterName name
*/
if (value)
{
if ((sub->dest = cupsdFindDest(value)) == NULL)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Printer \'%s\' not found on line %d of subscriptions.conf.",
value, linenum);
delete_sub = 1;
}
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "UserData"))
{
/*
* UserData encoded-string
*/
if (value)
{
for (i = 0, valueptr = value, hex = 0; i < 63 && *valueptr; i ++)
{
if (*valueptr == '<' && !hex)
{
hex = 1;
valueptr ++;
}
if (hex)
{
if (isxdigit(valueptr[0]) && isxdigit(valueptr[1]))
{
if (isdigit(valueptr[0]))
sub->user_data[i] = (unsigned char)((valueptr[0] - '0') << 4);
else
sub->user_data[i] = (unsigned char)((tolower(valueptr[0]) - 'a' + 10) << 4);
if (isdigit(valueptr[1]))
sub->user_data[i] |= valueptr[1] - '0';
else
sub->user_data[i] |= tolower(valueptr[1]) - 'a' + 10;
valueptr += 2;
if (*valueptr == '>')
{
hex = 0;
valueptr ++;
}
}
else
break;
}
else
sub->user_data[i] = (unsigned char)*valueptr++;
}
if (*valueptr)
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Bad UserData \'%s\' on line %d of subscriptions.conf.",
value, linenum);
}
else
sub->user_data_len = i;
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "LeaseDuration"))
{
/*
* LeaseDuration #
*/
if (value && isdigit(*value & 255))
{
sub->lease = atoi(value);
sub->expire = sub->lease ? time(NULL) + sub->lease : 0;
}
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "Interval"))
{
/*
* Interval #
*/
if (value && isdigit(*value & 255))
sub->interval = atoi(value);
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "ExpirationTime"))
{
/*
* ExpirationTime #
*/
if (value && isdigit(*value & 255))
sub->expire = atoi(value);
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else if (!_cups_strcasecmp(line, "NextEventId"))
{
/*
* NextEventId #
*/
if (value && isdigit(*value & 255))
sub->next_event_id = sub->first_event_id = atoi(value);
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"Syntax error on line %d of subscriptions.conf.",
linenum);
break;
}
}
else
{
/*
* Something else we don't understand...
*/
cupsdLogMessage(CUPSD_LOG_ERROR,
"Unknown configuration directive %s on line %d of subscriptions.conf.",
line, linenum);
}
}
cupsFileClose(fp);
}
