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/*
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* Main loop for the CUPS scheduler.
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*
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* Copyright © 2007-2019 by Apple Inc.
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* Copyright © 1997-2007 by Easy Software Products, all rights reserved.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more
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* information.
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*/
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/*
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* Include necessary headers...
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*/
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#define _MAIN_C_
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#include "cupsd.h"
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#include <sys/resource.h>
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#ifdef __APPLE__
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# include <xpc/xpc.h>
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# include <pthread/qos.h>
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#endif /* __APPLE__ */
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#ifdef HAVE_ASL_H
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# include <asl.h>
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#elif defined(HAVE_SYSTEMD_SD_JOURNAL_H)
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# define SD_JOURNAL_SUPPRESS_LOCATION
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# include <systemd/sd-journal.h>
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#endif /* HAVE_ASL_H */
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#include <syslog.h>
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#include <grp.h>
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#ifdef HAVE_LAUNCH_H
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# include <launch.h>
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#endif /* HAVE_LAUNCH_H */
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#ifdef HAVE_SYSTEMD
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# include <systemd/sd-daemon.h>
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#endif /* HAVE_SYSTEMD */
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#ifdef HAVE_ONDEMAND
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# define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd"
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/* Name of the KeepAlive file */
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#endif /* HAVE_ONDEMAND */
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#if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO)
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# include <malloc.h>
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#endif /* HAVE_MALLOC_H && HAVE_MALLINFO */
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#ifdef HAVE_NOTIFY_H
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# include <notify.h>
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#endif /* HAVE_NOTIFY_H */
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#ifdef HAVE_DBUS
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# include <dbus/dbus.h>
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#endif /* HAVE_DBUS */
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif /* HAVE_SYS_PARAM_H */
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/*
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* Local functions...
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*/
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static void parent_handler(int sig);
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static void process_children(void);
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static void sigchld_handler(int sig);
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static void sighup_handler(int sig);
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static void sigterm_handler(int sig);
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static long select_timeout(int fds);
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static void service_checkin(void);
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static void service_checkout(int shutdown);
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static void usage(int status) _CUPS_NORETURN;
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/*
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* Local globals...
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*/
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static int parent_signal = 0;
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/* Set to signal number from child */
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static int holdcount = 0; /* Number of times "hold" was called */
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#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
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static sigset_t holdmask; /* Old POSIX signal mask */
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#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
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static int dead_children = 0;
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/* Dead children? */
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static int stop_scheduler = 0;
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/* Should the scheduler stop? */
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static time_t local_timeout = 0;
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/* Next local printer timeout */
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/*
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* 'main()' - Main entry for the CUPS scheduler.
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*/
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int /* O - Exit status */
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main(int argc, /* I - Number of command-line args */
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char *argv[]) /* I - Command-line arguments */
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{
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int i; /* Looping var */
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char *opt; /* Option character */
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int close_all = 1, /* Close all file descriptors? */
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disconnect = 1, /* Disconnect from controlling terminal? */
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fg = 0, /* Run in foreground? */
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run_as_child = 0,
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/* Running as child process? */
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print_profile = 0;
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/* Print the sandbox profile to stdout? */
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int fds; /* Number of ready descriptors */
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cupsd_client_t *con; /* Current client */
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cupsd_job_t *job; /* Current job */
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cupsd_listener_t *lis; /* Current listener */
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time_t current_time, /* Current time */
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activity, /* Client activity timer */
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senddoc_time, /* Send-Document time */
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expire_time, /* Subscription expire time */
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report_time, /* Malloc/client/job report time */
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event_time; /* Last event notification time */
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long timeout; /* Timeout for cupsdDoSelect() */
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struct rlimit limit; /* Runtime limit */
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#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
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struct sigaction action; /* Actions for POSIX signals */
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#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
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#ifdef __APPLE__
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int use_sysman = 1; /* Use system management functions? */
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#else
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time_t netif_time = 0; /* Time since last network update */
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#endif /* __APPLE__ */
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#if defined(HAVE_ONDEMAND)
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int service_idle_exit = 0;
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/* Idle exit on select timeout? */
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#endif /* HAVE_ONDEMAND */
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#ifdef HAVE_GETEUID
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/*
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* Check for setuid invocation, which we do not support!
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*/
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if (getuid() != geteuid())
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{
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fputs("cupsd: Cannot run as a setuid program.\n", stderr);
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return (1);
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}
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#endif /* HAVE_GETEUID */
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/*
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* Check for command-line arguments...
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*/
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fg = 0;
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for (i = 1; i < argc; i ++)
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{
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if (!strcmp(argv[i], "--help"))
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usage(0);
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else if (argv[i][0] == '-')
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{
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for (opt = argv[i] + 1; *opt != '\0'; opt ++)
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{
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switch (*opt)
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{
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case 'C' : /* Run as child with config file */
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run_as_child = 1;
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fg = 1;
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close_all = 0;
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case 'c' : /* Configuration file */
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i ++;
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if (i >= argc)
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{
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_cupsLangPuts(stderr, _("cupsd: Expected config filename "
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"after \"-c\" option."));
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usage(1);
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}
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if (argv[i][0] == '/')
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{
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/*
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* Absolute directory...
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*/
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cupsdSetString(&ConfigurationFile, argv[i]);
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}
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else
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{
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/*
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* Relative directory...
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*/
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char *current; /* Current directory */
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/*
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* Allocate a buffer for the current working directory to
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* reduce run-time stack usage; this approximates the
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* behavior of some implementations of getcwd() when they
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* are passed a NULL pointer.
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*/
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if ((current = malloc(1024)) == NULL)
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{
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_cupsLangPuts(stderr,
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_("cupsd: Unable to get current directory."));
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return (1);
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}
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if (!getcwd(current, 1024))
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{
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_cupsLangPuts(stderr,
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_("cupsd: Unable to get current directory."));
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free(current);
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return (1);
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}
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cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]);
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free(current);
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}
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break;
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case 'f' : /* Run in foreground... */
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fg = 1;
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disconnect = 0;
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close_all = 0;
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break;
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case 'F' : /* Run in foreground, but disconnect from terminal... */
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fg = 1;
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close_all = 0;
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break;
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case 'h' : /* Show usage/help */
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usage(0);
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break;
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case 'l' : /* Started by launchd/systemd/upstart... */
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#ifdef HAVE_ONDEMAND
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OnDemand = 1;
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fg = 1;
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close_all = 0;
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disconnect = 0;
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#else
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_cupsLangPuts(stderr, _("cupsd: On-demand support not compiled "
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"in, running in normal mode."));
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fg = 0;
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disconnect = 1;
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close_all = 1;
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#endif /* HAVE_ONDEMAND */
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break;
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case 'p' : /* Stop immediately for profiling */
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fputs("cupsd: -p (startup profiling) is for internal testing "
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"use only!\n", stderr);
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stop_scheduler = 1;
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fg = 1;
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disconnect = 0;
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close_all = 0;
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break;
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case 'P' : /* Disable security profiles */
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fputs("cupsd: -P (disable sandboxing) is for internal testing use only.\n", stderr);
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UseSandboxing = 0;
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break;
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case 's' : /* Set cups-files.conf location */
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i ++;
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if (i >= argc)
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{
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_cupsLangPuts(stderr, _("cupsd: Expected cups-files.conf "
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"filename after \"-s\" option."));
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usage(1);
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}
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if (argv[i][0] != '/')
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{
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/*
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* Relative filename not allowed...
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*/
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_cupsLangPuts(stderr, _("cupsd: Relative cups-files.conf "
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"filename not allowed."));
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usage(1);
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}
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cupsdSetString(&CupsFilesFile, argv[i]);
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break;
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#ifdef __APPLE__
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case 'S' : /* Disable system management functions */
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fputs("cupsd: -S (disable system management) for internal "
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"testing use only!\n", stderr);
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use_sysman = 0;
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break;
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#endif /* __APPLE__ */
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case 't' : /* Test the cupsd.conf file... */
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TestConfigFile = 1;
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fg = 1;
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disconnect = 0;
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close_all = 0;
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break;
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case 'T' : /* Print security profile */
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print_profile = 1;
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fg = 1;
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disconnect = 0;
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close_all = 0;
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break;
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default : /* Unknown option */
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_cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - "
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"aborting."), *opt);
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usage(1);
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break;
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}
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}
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}
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else
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{
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_cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting."),
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argv[i]);
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usage(1);
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}
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}
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if (!ConfigurationFile)
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cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf");
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if (!CupsFilesFile)
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{
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char *filename, /* Copy of cupsd.conf filename */
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*slash; /* Final slash in cupsd.conf filename */
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size_t len; /* Size of buffer */
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len = strlen(ConfigurationFile) + 15;
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if ((filename = malloc(len)) == NULL)
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|
|
{
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|
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_cupsLangPrintf(stderr,
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_("cupsd: Unable to get path to "
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|
|
"cups-files.conf file."));
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return (1);
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|
}
|
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|
strlcpy(filename, ConfigurationFile, len);
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if ((slash = strrchr(filename, '/')) == NULL)
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{
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|
free(filename);
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_cupsLangPrintf(stderr,
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_("cupsd: Unable to get path to "
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"cups-files.conf file."));
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return (1);
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}
|
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|
|
strlcpy(slash, "/cups-files.conf", len - (size_t)(slash - filename));
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|
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cupsdSetString(&CupsFilesFile, filename);
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|
free(filename);
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}
|
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|
|
|
if (disconnect)
|
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|
{
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|
|
/*
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|
|
* Make sure we aren't tying up any filesystems...
|
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|
*/
|
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|
|
chdir("/");
|
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|
|
|
|
/*
|
|
|
* Disconnect from the controlling terminal...
|
|
|
*/
|
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|
|
|
|
setsid();
|
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|
}
|
|
|
|
|
|
if (close_all)
|
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|
{
|
|
|
/*
|
|
|
* Close all open files...
|
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|
*/
|
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|
|
|
|
getrlimit(RLIMIT_NOFILE, &limit);
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|
|
|
|
for (i = 0; i < (int)limit.rlim_cur && i < 1024; i ++)
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close(i);
|
|
|
|
|
|
/*
|
|
|
* Redirect stdin/out/err to /dev/null...
|
|
|
*/
|
|
|
|
|
|
if ((i = open("/dev/null", O_RDONLY)) != 0)
|
|
|
{
|
|
|
dup2(i, 0);
|
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|
close(i);
|
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|
}
|
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|
|
|
|
if ((i = open("/dev/null", O_WRONLY)) != 1)
|
|
|
{
|
|
|
dup2(i, 1);
|
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|
close(i);
|
|
|
}
|
|
|
|
|
|
if ((i = open("/dev/null", O_WRONLY)) != 2)
|
|
|
{
|
|
|
dup2(i, 2);
|
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|
close(i);
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
LogStderr = cupsFileStderr();
|
|
|
|
|
|
/*
|
|
|
* Run in the background as needed...
|
|
|
*/
|
|
|
|
|
|
if (!fg)
|
|
|
{
|
|
|
/*
|
|
|
* Setup signal handlers for the parent...
|
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
|
|
|
sigset(SIGUSR1, parent_handler);
|
|
|
sigset(SIGCHLD, parent_handler);
|
|
|
|
|
|
sigset(SIGHUP, SIG_IGN);
|
|
|
#elif defined(HAVE_SIGACTION)
|
|
|
memset(&action, 0, sizeof(action));
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
sigaddset(&action.sa_mask, SIGUSR1);
|
|
|
action.sa_handler = parent_handler;
|
|
|
sigaction(SIGUSR1, &action, NULL);
|
|
|
sigaction(SIGCHLD, &action, NULL);
|
|
|
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
action.sa_handler = SIG_IGN;
|
|
|
sigaction(SIGHUP, &action, NULL);
|
|
|
#else
|
|
|
signal(SIGUSR1, parent_handler);
|
|
|
signal(SIGCLD, parent_handler);
|
|
|
|
|
|
signal(SIGHUP, SIG_IGN);
|
|
|
#endif /* HAVE_SIGSET */
|
|
|
|
|
|
if (fork() > 0)
|
|
|
{
|
|
|
/*
|
|
|
* OK, wait for the child to startup and send us SIGUSR1 or to crash
|
|
|
* and the OS send us SIGCHLD... We also need to ignore SIGHUP which
|
|
|
* might be sent by the init script to restart the scheduler...
|
|
|
*/
|
|
|
|
|
|
for (; parent_signal == 0;)
|
|
|
sleep(1);
|
|
|
|
|
|
if (parent_signal == SIGUSR1)
|
|
|
return (0);
|
|
|
|
|
|
if (wait(&i) < 0)
|
|
|
{
|
|
|
perror("cupsd");
|
|
|
return (1);
|
|
|
}
|
|
|
else if (WIFEXITED(i))
|
|
|
{
|
|
|
fprintf(stderr, "cupsd: Child exited with status %d\n",
|
|
|
WEXITSTATUS(i));
|
|
|
return (2);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
fprintf(stderr, "cupsd: Child exited on signal %d\n", WTERMSIG(i));
|
|
|
return (3);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#if defined(__OpenBSD__) && OpenBSD < 201211
|
|
|
/*
|
|
|
* Call _thread_sys_closefrom() so the child process doesn't reset the
|
|
|
* parent's file descriptors to be blocking. This is a workaround for a
|
|
|
* limitation of userland libpthread on older versions of OpenBSD.
|
|
|
*/
|
|
|
|
|
|
_thread_sys_closefrom(0);
|
|
|
#endif /* __OpenBSD__ && OpenBSD < 201211 */
|
|
|
|
|
|
/*
|
|
|
* Since many system libraries create fork-unsafe data on execution of a
|
|
|
* program, we need to re-execute the background cupsd with the "-C" and "-s"
|
|
|
* options to avoid problems. Unfortunately, we also have to assume that
|
|
|
* argv[0] contains the name of the cupsd executable - there is no portable
|
|
|
* way to get the real pathname...
|
|
|
*/
|
|
|
|
|
|
execlp(argv[0], argv[0], "-C", ConfigurationFile, "-s", CupsFilesFile, (char *)0);
|
|
|
exit(errno);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Let the system know we are busy while we bring up cupsd...
|
|
|
*/
|
|
|
|
|
|
cupsdSetBusyState(1);
|
|
|
|
|
|
/*
|
|
|
* Set the timezone info...
|
|
|
*/
|
|
|
|
|
|
tzset();
|
|
|
|
|
|
#ifdef LC_TIME
|
|
|
setlocale(LC_TIME, "");
|
|
|
#endif /* LC_TIME */
|
|
|
|
|
|
#ifdef HAVE_DBUS_THREADS_INIT
|
|
|
/*
|
|
|
* Enable threading support for D-BUS...
|
|
|
*/
|
|
|
|
|
|
dbus_threads_init_default();
|
|
|
#endif /* HAVE_DBUS_THREADS_INIT */
|
|
|
|
|
|
/*
|
|
|
* Set the maximum number of files...
|
|
|
*/
|
|
|
|
|
|
getrlimit(RLIMIT_NOFILE, &limit);
|
|
|
|
|
|
#if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE)
|
|
|
if (limit.rlim_max > FD_SETSIZE)
|
|
|
MaxFDs = FD_SETSIZE;
|
|
|
else
|
|
|
#endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */
|
|
|
#ifdef RLIM_INFINITY
|
|
|
if (limit.rlim_max == RLIM_INFINITY)
|
|
|
MaxFDs = 16384;
|
|
|
else
|
|
|
#endif /* RLIM_INFINITY */
|
|
|
MaxFDs = limit.rlim_max;
|
|
|
|
|
|
limit.rlim_cur = (rlim_t)MaxFDs;
|
|
|
|
|
|
setrlimit(RLIMIT_NOFILE, &limit);
|
|
|
|
|
|
cupsdStartSelect();
|
|
|
|
|
|
/*
|
|
|
* Read configuration...
|
|
|
*/
|
|
|
|
|
|
if (!cupsdReadConfiguration())
|
|
|
return (1);
|
|
|
else if (TestConfigFile)
|
|
|
{
|
|
|
printf("\"%s\" is OK.\n", CupsFilesFile);
|
|
|
printf("\"%s\" is OK.\n", ConfigurationFile);
|
|
|
return (0);
|
|
|
}
|
|
|
else if (print_profile)
|
|
|
{
|
|
|
cups_file_t *fp; /* File pointer */
|
|
|
const char *profile = cupsdCreateProfile(42, 0);
|
|
|
/* Profile */
|
|
|
char line[1024]; /* Line from file */
|
|
|
|
|
|
|
|
|
if ((fp = cupsFileOpen(profile, "r")) == NULL)
|
|
|
{
|
|
|
printf("Unable to open profile file \"%s\": %s\n", profile ? profile : "(null)", strerror(errno));
|
|
|
return (1);
|
|
|
}
|
|
|
|
|
|
while (cupsFileGets(fp, line, sizeof(line)))
|
|
|
puts(line);
|
|
|
|
|
|
cupsFileClose(fp);
|
|
|
|
|
|
return (0);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Clean out old temp files and printer cache data.
|
|
|
*/
|
|
|
|
|
|
if (!strncmp(TempDir, RequestRoot, strlen(RequestRoot)))
|
|
|
cupsdCleanFiles(TempDir, NULL);
|
|
|
|
|
|
cupsdCleanFiles(CacheDir, "*.ipp");
|
|
|
|
|
|
/*
|
|
|
* If we were started on demand by launchd or systemd get the listen sockets
|
|
|
* file descriptors...
|
|
|
*/
|
|
|
|
|
|
service_checkin();
|
|
|
service_checkout(0);
|
|
|
|
|
|
/*
|
|
|
* Startup the server...
|
|
|
*/
|
|
|
|
|
|
httpInitialize();
|
|
|
|
|
|
cupsdStartServer();
|
|
|
|
|
|
/*
|
|
|
* Catch hangup and child signals and ignore broken pipes...
|
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
|
|
|
sigset(SIGCHLD, sigchld_handler);
|
|
|
sigset(SIGHUP, sighup_handler);
|
|
|
sigset(SIGPIPE, SIG_IGN);
|
|
|
sigset(SIGTERM, sigterm_handler);
|
|
|
#elif defined(HAVE_SIGACTION)
|
|
|
memset(&action, 0, sizeof(action));
|
|
|
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
sigaddset(&action.sa_mask, SIGTERM);
|
|
|
sigaddset(&action.sa_mask, SIGCHLD);
|
|
|
action.sa_handler = sigchld_handler;
|
|
|
sigaction(SIGCHLD, &action, NULL);
|
|
|
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
sigaddset(&action.sa_mask, SIGHUP);
|
|
|
action.sa_handler = sighup_handler;
|
|
|
sigaction(SIGHUP, &action, NULL);
|
|
|
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
action.sa_handler = SIG_IGN;
|
|
|
sigaction(SIGPIPE, &action, NULL);
|
|
|
|
|
|
sigemptyset(&action.sa_mask);
|
|
|
sigaddset(&action.sa_mask, SIGTERM);
|
|
|
sigaddset(&action.sa_mask, SIGCHLD);
|
|
|
action.sa_handler = sigterm_handler;
|
|
|
sigaction(SIGTERM, &action, NULL);
|
|
|
#else
|
|
|
signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */
|
|
|
signal(SIGHUP, sighup_handler);
|
|
|
signal(SIGPIPE, SIG_IGN);
|
|
|
signal(SIGTERM, sigterm_handler);
|
|
|
#endif /* HAVE_SIGSET */
|
|
|
|
|
|
/*
|
|
|
* Initialize authentication certificates...
|
|
|
*/
|
|
|
|
|
|
cupsdInitCerts();
|
|
|
|
|
|
/*
|
|
|
* If we are running in the background, signal the parent process that
|
|
|
* we are up and running...
|
|
|
*/
|
|
|
|
|
|
if (!fg || run_as_child)
|
|
|
{
|
|
|
/*
|
|
|
* Send a signal to the parent process, but only if the parent is
|
|
|
* not PID 1 (init). This avoids accidentally shutting down the
|
|
|
* system on OpenBSD if you CTRL-C the server before it is up...
|
|
|
*/
|
|
|
|
|
|
i = getppid(); /* Save parent PID to avoid race condition */
|
|
|
|
|
|
if (i != 1)
|
|
|
kill(i, SIGUSR1);
|
|
|
}
|
|
|
|
|
|
#ifdef __APPLE__
|
|
|
/*
|
|
|
* Start power management framework...
|
|
|
*/
|
|
|
|
|
|
if (use_sysman)
|
|
|
cupsdStartSystemMonitor();
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
/*
|
|
|
* Send server-started event...
|
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
if (OnDemand)
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started on demand.");
|
|
|
else
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
if (fg)
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started in foreground.");
|
|
|
else
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started in background.");
|
|
|
|
|
|
cupsdSetBusyState(0);
|
|
|
|
|
|
/*
|
|
|
* Start any pending print jobs...
|
|
|
*/
|
|
|
|
|
|
cupsdCheckJobs();
|
|
|
|
|
|
/*
|
|
|
* Loop forever...
|
|
|
*/
|
|
|
|
|
|
current_time = time(NULL);
|
|
|
event_time = current_time;
|
|
|
expire_time = current_time;
|
|
|
local_timeout = 0;
|
|
|
fds = 1;
|
|
|
report_time = 0;
|
|
|
senddoc_time = current_time;
|
|
|
|
|
|
while (!stop_scheduler)
|
|
|
{
|
|
|
/*
|
|
|
* Check if there are dead children to handle...
|
|
|
*/
|
|
|
|
|
|
if (dead_children)
|
|
|
process_children();
|
|
|
|
|
|
/*
|
|
|
* Check if we need to load the server configuration file...
|
|
|
*/
|
|
|
|
|
|
if (NeedReload)
|
|
|
{
|
|
|
/*
|
|
|
* Close any idle clients...
|
|
|
*/
|
|
|
|
|
|
if (cupsArrayCount(Clients) > 0)
|
|
|
{
|
|
|
for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
|
|
|
con;
|
|
|
con = (cupsd_client_t *)cupsArrayNext(Clients))
|
|
|
if (httpGetState(con->http) == HTTP_WAITING)
|
|
|
cupsdCloseClient(con);
|
|
|
else
|
|
|
con->http->keep_alive = HTTP_KEEPALIVE_OFF;
|
|
|
|
|
|
cupsdPauseListening();
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Restart if all clients are closed and all jobs finished, or
|
|
|
* if the reload timeout has elapsed...
|
|
|
*/
|
|
|
|
|
|
if ((cupsArrayCount(Clients) == 0 &&
|
|
|
(cupsArrayCount(PrintingJobs) == 0 || NeedReload != RELOAD_ALL)) ||
|
|
|
(time(NULL) - ReloadTime) >= ReloadTimeout)
|
|
|
{
|
|
|
/*
|
|
|
* Shutdown the server...
|
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
if (OnDemand)
|
|
|
{
|
|
|
# ifndef HAVE_SYSTEMD /* Issue #5640: systemd doesn't actually support launch-on-demand services, need to fake it */
|
|
|
stop_scheduler = 1;
|
|
|
# endif /* HAVE_SYSTEMD */
|
|
|
break;
|
|
|
}
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
|
|
|
DoingShutdown = 1;
|
|
|
|
|
|
cupsdStopServer();
|
|
|
|
|
|
/*
|
|
|
* Read configuration...
|
|
|
*/
|
|
|
|
|
|
if (!cupsdReadConfiguration())
|
|
|
{
|
|
|
#ifdef HAVE_SYSTEMD_SD_JOURNAL_H
|
|
|
sd_journal_print(LOG_ERR, "Unable to read configuration file \"%s\" - exiting.", ConfigurationFile);
|
|
|
#else
|
|
|
syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting.", ConfigurationFile);
|
|
|
#endif /* HAVE_SYSTEMD_SD_JOURNAL_H */
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Startup the server...
|
|
|
*/
|
|
|
|
|
|
DoingShutdown = 0;
|
|
|
|
|
|
cupsdStartServer();
|
|
|
|
|
|
/*
|
|
|
* Send a server-restarted event...
|
|
|
*/
|
|
|
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_RESTARTED, NULL, NULL,
|
|
|
"Scheduler restarted.");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Check for available input or ready output. If cupsdDoSelect()
|
|
|
* returns 0 or -1, something bad happened and we should exit
|
|
|
* immediately.
|
|
|
*
|
|
|
* Note that we at least have one listening socket open at all
|
|
|
* times.
|
|
|
*/
|
|
|
|
|
|
if ((timeout = select_timeout(fds)) > 1 && LastEvent)
|
|
|
timeout = 1;
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
/*
|
|
|
* If no other work is scheduled and we're being controlled by launchd,
|
|
|
* systemd, etc. then timeout after 'IdleExitTimeout' seconds of
|
|
|
* inactivity...
|
|
|
*/
|
|
|
|
|
|
if (timeout == 86400 && OnDemand && IdleExitTimeout &&
|
|
|
# ifdef HAVE_SYSTEMD
|
|
|
!WebInterface &&
|
|
|
# endif /* HAVE_SYSTEMD */
|
|
|
!cupsArrayCount(ActiveJobs))
|
|
|
{
|
|
|
cupsd_printer_t *p = NULL; /* Current printer */
|
|
|
|
|
|
if (Browsing && BrowseLocalProtocols)
|
|
|
{
|
|
|
for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); p; p = (cupsd_printer_t *)cupsArrayNext(Printers))
|
|
|
if (p->shared)
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
if (!p)
|
|
|
{
|
|
|
timeout = IdleExitTimeout;
|
|
|
service_idle_exit = 1;
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
service_idle_exit = 0;
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
|
|
|
if ((fds = cupsdDoSelect(timeout)) < 0)
|
|
|
{
|
|
|
/*
|
|
|
* Got an error from select!
|
|
|
*/
|
|
|
|
|
|
#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
|
|
|
cupsd_printer_t *p; /* Current printer */
|
|
|
#endif /* HAVE_DNSSD || HAVE_AVAHI */
|
|
|
|
|
|
if (errno == EINTR) /* Just interrupted by a signal */
|
|
|
continue;
|
|
|
|
|
|
/*
|
|
|
* Log all sorts of debug info to help track down the problem.
|
|
|
*/
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!",
|
|
|
strerror(errno));
|
|
|
|
|
|
for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients);
|
|
|
con;
|
|
|
i ++, con = (cupsd_client_t *)cupsArrayNext(Clients))
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG,
|
|
|
"Clients[%d] = %d, file = %d, state = %d",
|
|
|
i, con->number, con->file, httpGetState(con->http));
|
|
|
|
|
|
for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
|
|
|
lis;
|
|
|
i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd);
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]);
|
|
|
|
|
|
#ifdef __APPLE__
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d",
|
|
|
SysEventPipes[0]);
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs);
|
|
|
job;
|
|
|
job = (cupsd_job_t *)cupsArrayNext(ActiveJobs))
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]",
|
|
|
job->id,
|
|
|
job->status_buffer ? job->status_buffer->fd : -1,
|
|
|
job->print_pipes[0], job->print_pipes[1],
|
|
|
job->back_pipes[0], job->back_pipes[1]);
|
|
|
|
|
|
#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
|
|
|
for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
|
|
|
p;
|
|
|
p = (cupsd_printer_t *)cupsArrayNext(Printers))
|
|
|
cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] reg_name=\"%s\"", p->name,
|
|
|
p->reg_name ? p->reg_name : "(null)");
|
|
|
#endif /* HAVE_DNSSD || HAVE_AVAHI */
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
current_time = time(NULL);
|
|
|
|
|
|
/*
|
|
|
* Write dirty config/state files...
|
|
|
*/
|
|
|
|
|
|
if (DirtyCleanTime && current_time >= DirtyCleanTime)
|
|
|
cupsdCleanDirty();
|
|
|
|
|
|
#ifdef __APPLE__
|
|
|
/*
|
|
|
* If we are going to sleep and still have pending jobs, stop them after
|
|
|
* a period of time...
|
|
|
*/
|
|
|
|
|
|
if (SleepJobs > 0 && current_time >= SleepJobs &&
|
|
|
cupsArrayCount(PrintingJobs) > 0)
|
|
|
{
|
|
|
SleepJobs = 0;
|
|
|
cupsdStopAllJobs(CUPSD_JOB_DEFAULT, 5);
|
|
|
}
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
#ifndef __APPLE__
|
|
|
/*
|
|
|
* Update the network interfaces once a minute...
|
|
|
*/
|
|
|
|
|
|
if ((current_time - netif_time) >= 60)
|
|
|
{
|
|
|
netif_time = current_time;
|
|
|
NetIFUpdate = 1;
|
|
|
}
|
|
|
#endif /* !__APPLE__ */
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
/*
|
|
|
* If no other work was scheduled and we're being controlled by launchd,
|
|
|
* systemd, or upstart then timeout after 'LaunchdTimeout' seconds of
|
|
|
* inactivity...
|
|
|
*/
|
|
|
|
|
|
if (!fds && service_idle_exit)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_INFO,
|
|
|
"Printer sharing is off and there are no jobs pending, "
|
|
|
"will restart on demand.");
|
|
|
stop_scheduler = 1;
|
|
|
break;
|
|
|
}
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
|
|
|
/*
|
|
|
* Resume listening for new connections as needed...
|
|
|
*/
|
|
|
|
|
|
if (ListeningPaused && ListeningPaused <= current_time &&
|
|
|
cupsArrayCount(Clients) < MaxClients)
|
|
|
cupsdResumeListening();
|
|
|
|
|
|
/*
|
|
|
* Expire subscriptions and unload completed jobs as needed...
|
|
|
*/
|
|
|
|
|
|
if (current_time > expire_time)
|
|
|
{
|
|
|
cupsdExpireSubscriptions(NULL, NULL);
|
|
|
|
|
|
cupsdUnloadCompletedJobs();
|
|
|
|
|
|
expire_time = current_time;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Delete stale local printers...
|
|
|
*/
|
|
|
|
|
|
if (current_time >= local_timeout)
|
|
|
{
|
|
|
cupsdDeleteTemporaryPrinters(0);
|
|
|
local_timeout = 0;
|
|
|
}
|
|
|
|
|
|
#ifndef HAVE_AUTHORIZATION_H
|
|
|
/*
|
|
|
* Update the root certificate once every 5 minutes if we have client
|
|
|
* connections...
|
|
|
*/
|
|
|
|
|
|
if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration &&
|
|
|
!RunUser && cupsArrayCount(Clients))
|
|
|
{
|
|
|
/*
|
|
|
* Update the root certificate...
|
|
|
*/
|
|
|
|
|
|
cupsdDeleteCert(0);
|
|
|
cupsdAddCert(0, "root", cupsdDefaultAuthType());
|
|
|
}
|
|
|
#endif /* !HAVE_AUTHORIZATION_H */
|
|
|
|
|
|
/*
|
|
|
* Clean job history...
|
|
|
*/
|
|
|
|
|
|
if (JobHistoryUpdate && current_time >= JobHistoryUpdate)
|
|
|
cupsdCleanJobs();
|
|
|
|
|
|
/*
|
|
|
* Update any pending multi-file documents...
|
|
|
*/
|
|
|
|
|
|
if ((current_time - senddoc_time) >= 10)
|
|
|
{
|
|
|
cupsdCheckJobs();
|
|
|
senddoc_time = current_time;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Check for new data on the client sockets...
|
|
|
*/
|
|
|
|
|
|
for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
|
|
|
con;
|
|
|
con = (cupsd_client_t *)cupsArrayNext(Clients))
|
|
|
{
|
|
|
/*
|
|
|
* Process pending data in the input buffer...
|
|
|
*/
|
|
|
|
|
|
if (httpGetReady(con->http))
|
|
|
{
|
|
|
cupsdReadClient(con);
|
|
|
continue;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Check the activity and close old clients...
|
|
|
*/
|
|
|
|
|
|
activity = current_time - Timeout;
|
|
|
if (httpGetActivity(con->http) < activity && !con->pipe_pid)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Closing client %d after %d seconds of inactivity.", con->number, Timeout);
|
|
|
|
|
|
cupsdCloseClient(con);
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Log statistics at most once a minute when in debug mode...
|
|
|
*/
|
|
|
|
|
|
if ((current_time - report_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG)
|
|
|
{
|
|
|
size_t string_count, /* String count */
|
|
|
alloc_bytes, /* Allocated string bytes */
|
|
|
total_bytes; /* Total string bytes */
|
|
|
#ifdef HAVE_MALLINFO
|
|
|
struct mallinfo mem; /* Malloc information */
|
|
|
|
|
|
|
|
|
mem = mallinfo();
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-arena=%lu", mem.arena);
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-used=%lu",
|
|
|
mem.usmblks + mem.uordblks);
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-free=%lu",
|
|
|
mem.fsmblks + mem.fordblks);
|
|
|
#endif /* HAVE_MALLINFO */
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: clients=%d",
|
|
|
cupsArrayCount(Clients));
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs=%d",
|
|
|
cupsArrayCount(Jobs));
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs-active=%d",
|
|
|
cupsArrayCount(ActiveJobs));
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: printers=%d",
|
|
|
cupsArrayCount(Printers));
|
|
|
|
|
|
string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes);
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG,
|
|
|
"Report: stringpool-string-count=" CUPS_LLFMT,
|
|
|
CUPS_LLCAST string_count);
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG,
|
|
|
"Report: stringpool-alloc-bytes=" CUPS_LLFMT,
|
|
|
CUPS_LLCAST alloc_bytes);
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG,
|
|
|
"Report: stringpool-total-bytes=" CUPS_LLFMT,
|
|
|
CUPS_LLCAST total_bytes);
|
|
|
|
|
|
report_time = current_time;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Handle OS-specific event notification for any events that have
|
|
|
* accumulated. Don't send these more than once a second...
|
|
|
*/
|
|
|
|
|
|
if (LastEvent && (current_time - event_time) >= 1)
|
|
|
{
|
|
|
#ifdef HAVE_NOTIFY_POST
|
|
|
if (LastEvent & (CUPSD_EVENT_PRINTER_ADDED |
|
|
|
CUPSD_EVENT_PRINTER_DELETED |
|
|
|
CUPSD_EVENT_PRINTER_MODIFIED))
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG2,
|
|
|
"notify_post(\"com.apple.printerListChange\")");
|
|
|
notify_post("com.apple.printerListChange");
|
|
|
}
|
|
|
|
|
|
if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG2,
|
|
|
"notify_post(\"com.apple.printerHistoryChange\")");
|
|
|
notify_post("com.apple.printerHistoryChange");
|
|
|
}
|
|
|
|
|
|
if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED |
|
|
|
CUPSD_EVENT_JOB_CONFIG_CHANGED |
|
|
|
CUPSD_EVENT_JOB_PROGRESS))
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG2,
|
|
|
"notify_post(\"com.apple.jobChange\")");
|
|
|
notify_post("com.apple.jobChange");
|
|
|
}
|
|
|
#endif /* HAVE_NOTIFY_POST */
|
|
|
|
|
|
/*
|
|
|
* Reset the accumulated events...
|
|
|
*/
|
|
|
|
|
|
LastEvent = CUPSD_EVENT_NONE;
|
|
|
event_time = current_time;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Log a message based on what happened...
|
|
|
*/
|
|
|
|
|
|
if (stop_scheduler)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally.");
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL,
|
|
|
"Scheduler shutting down normally.");
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR,
|
|
|
"Scheduler shutting down due to program error.");
|
|
|
cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL,
|
|
|
"Scheduler shutting down due to program error.");
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Close all network clients...
|
|
|
*/
|
|
|
|
|
|
DoingShutdown = 1;
|
|
|
|
|
|
cupsdStopServer();
|
|
|
|
|
|
/*
|
|
|
* Update the KeepAlive/PID file as needed...
|
|
|
*/
|
|
|
|
|
|
service_checkout(1);
|
|
|
|
|
|
/*
|
|
|
* Stop all jobs...
|
|
|
*/
|
|
|
|
|
|
cupsdFreeAllJobs();
|
|
|
|
|
|
/*
|
|
|
* Delete all temporary printers...
|
|
|
*/
|
|
|
|
|
|
cupsdDeleteTemporaryPrinters(1);
|
|
|
|
|
|
#ifdef __APPLE__
|
|
|
/*
|
|
|
* Stop monitoring system event monitoring...
|
|
|
*/
|
|
|
|
|
|
if (use_sysman)
|
|
|
cupsdStopSystemMonitor();
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
cupsdStopSelect();
|
|
|
|
|
|
return (!stop_scheduler);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdAddString()' - Copy and add a string to an array.
|
|
|
*/
|
|
|
|
|
|
int /* O - 1 on success, 0 on failure */
|
|
|
cupsdAddString(cups_array_t **a, /* IO - String array */
|
|
|
const char *s) /* I - String to copy and add */
|
|
|
{
|
|
|
if (!*a)
|
|
|
*a = cupsArrayNew3((cups_array_func_t)strcmp, NULL,
|
|
|
(cups_ahash_func_t)NULL, 0,
|
|
|
(cups_acopy_func_t)strdup,
|
|
|
(cups_afree_func_t)free);
|
|
|
|
|
|
return (cupsArrayAdd(*a, (char *)s));
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdCheckProcess()' - Tell the main loop to check for dead children.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdCheckProcess(void)
|
|
|
{
|
|
|
/*
|
|
|
* Flag that we have dead children...
|
|
|
*/
|
|
|
|
|
|
dead_children = 1;
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdClearString()' - Clear a string.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdClearString(char **s) /* O - String value */
|
|
|
{
|
|
|
if (s && *s)
|
|
|
{
|
|
|
free(*s);
|
|
|
*s = NULL;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdFreeStrings()' - Free an array of strings.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdFreeStrings(cups_array_t **a) /* IO - String array */
|
|
|
{
|
|
|
if (*a)
|
|
|
{
|
|
|
cupsArrayDelete(*a);
|
|
|
*a = NULL;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdHoldSignals()' - Hold child and termination signals.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdHoldSignals(void)
|
|
|
{
|
|
|
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
|
|
|
sigset_t newmask; /* New POSIX signal mask */
|
|
|
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
|
|
|
|
|
|
|
|
|
holdcount ++;
|
|
|
if (holdcount > 1)
|
|
|
return;
|
|
|
|
|
|
#ifdef HAVE_SIGSET
|
|
|
sighold(SIGTERM);
|
|
|
sighold(SIGCHLD);
|
|
|
#elif defined(HAVE_SIGACTION)
|
|
|
sigemptyset(&newmask);
|
|
|
sigaddset(&newmask, SIGTERM);
|
|
|
sigaddset(&newmask, SIGCHLD);
|
|
|
sigprocmask(SIG_BLOCK, &newmask, &holdmask);
|
|
|
#endif /* HAVE_SIGSET */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdReleaseSignals()' - Release signals for delivery.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdReleaseSignals(void)
|
|
|
{
|
|
|
holdcount --;
|
|
|
if (holdcount > 0)
|
|
|
return;
|
|
|
|
|
|
#ifdef HAVE_SIGSET
|
|
|
sigrelse(SIGTERM);
|
|
|
sigrelse(SIGCHLD);
|
|
|
#elif defined(HAVE_SIGACTION)
|
|
|
sigprocmask(SIG_SETMASK, &holdmask, NULL);
|
|
|
#endif /* HAVE_SIGSET */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdSetString()' - Set a string value.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdSetString(char **s, /* O - New string */
|
|
|
const char *v) /* I - String value */
|
|
|
{
|
|
|
if (!s || *s == v)
|
|
|
return;
|
|
|
|
|
|
if (*s)
|
|
|
free(*s);
|
|
|
|
|
|
if (v)
|
|
|
*s = strdup(v);
|
|
|
else
|
|
|
*s = NULL;
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'cupsdSetStringf()' - Set a formatted string value.
|
|
|
*/
|
|
|
|
|
|
void
|
|
|
cupsdSetStringf(char **s, /* O - New string */
|
|
|
const char *f, /* I - Printf-style format string */
|
|
|
...) /* I - Additional args as needed */
|
|
|
{
|
|
|
char v[65536 + 64]; /* Formatting string value */
|
|
|
va_list ap; /* Argument pointer */
|
|
|
char *olds; /* Old string */
|
|
|
|
|
|
|
|
|
if (!s)
|
|
|
return;
|
|
|
|
|
|
olds = *s;
|
|
|
|
|
|
if (f)
|
|
|
{
|
|
|
va_start(ap, f);
|
|
|
vsnprintf(v, sizeof(v), f, ap);
|
|
|
va_end(ap);
|
|
|
|
|
|
*s = strdup(v);
|
|
|
}
|
|
|
else
|
|
|
*s = NULL;
|
|
|
|
|
|
if (olds)
|
|
|
free(olds);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'parent_handler()' - Catch USR1/CHLD signals...
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
parent_handler(int sig) /* I - Signal */
|
|
|
{
|
|
|
/*
|
|
|
* Store the signal we got from the OS and return...
|
|
|
*/
|
|
|
|
|
|
parent_signal = sig;
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'process_children()' - Process all dead children...
|
|
|
*/
|
|
|
|
|
|
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->current_file < job->num_files)
|
|
|
cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_FORCE, "Canceling multi-file job due to backend failure.");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
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)
|
|
|
ippSetString(job->attrs, &job->printer_message, 0, 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->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);
|
|
|
}
|
|
|
else 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);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 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;
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'select_timeout()' - Calculate the select timeout value.
|
|
|
*
|
|
|
*/
|
|
|
|
|
|
static long /* O - Number of seconds */
|
|
|
select_timeout(int fds) /* I - Number of descriptors returned */
|
|
|
{
|
|
|
long timeout; /* Timeout for select */
|
|
|
time_t now; /* Current time */
|
|
|
cupsd_client_t *con; /* Client information */
|
|
|
cupsd_job_t *job; /* Job information */
|
|
|
const char *why; /* Debugging aid */
|
|
|
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout: JobHistoryUpdate=%ld",
|
|
|
(long)JobHistoryUpdate);
|
|
|
|
|
|
/*
|
|
|
* Check to see if any of the clients have pending data to be
|
|
|
* processed; if so, the timeout should be 0...
|
|
|
*/
|
|
|
|
|
|
for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
|
|
|
con;
|
|
|
con = (cupsd_client_t *)cupsArrayNext(Clients))
|
|
|
if (httpGetReady(con->http))
|
|
|
return (0);
|
|
|
|
|
|
/*
|
|
|
* If select has been active in the last second (fds > 0) or we have
|
|
|
* many resources in use then don't bother trying to optimize the
|
|
|
* timeout, just make it 1 second.
|
|
|
*/
|
|
|
|
|
|
if (fds > 0 || cupsArrayCount(Clients) > 50)
|
|
|
return (1);
|
|
|
|
|
|
/*
|
|
|
* Otherwise, check all of the possible events that we need to wake for...
|
|
|
*/
|
|
|
|
|
|
now = time(NULL);
|
|
|
timeout = now + 86400; /* 86400 == 1 day */
|
|
|
why = "do nothing";
|
|
|
|
|
|
#ifdef __APPLE__
|
|
|
/*
|
|
|
* When going to sleep, wake up to abort jobs that don't complete in time.
|
|
|
*/
|
|
|
|
|
|
if (SleepJobs > 0 && SleepJobs < timeout)
|
|
|
{
|
|
|
timeout = SleepJobs;
|
|
|
why = "abort jobs before sleeping";
|
|
|
}
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
/*
|
|
|
* Check whether we are accepting new connections...
|
|
|
*/
|
|
|
|
|
|
if (ListeningPaused > 0 && cupsArrayCount(Clients) < MaxClients &&
|
|
|
ListeningPaused < timeout)
|
|
|
{
|
|
|
if (ListeningPaused <= now)
|
|
|
timeout = now;
|
|
|
else
|
|
|
timeout = ListeningPaused;
|
|
|
|
|
|
why = "resume listening";
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Check the activity and close old clients...
|
|
|
*/
|
|
|
|
|
|
for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
|
|
|
con;
|
|
|
con = (cupsd_client_t *)cupsArrayNext(Clients))
|
|
|
if ((httpGetActivity(con->http) + Timeout) < timeout)
|
|
|
{
|
|
|
timeout = httpGetActivity(con->http) + Timeout;
|
|
|
why = "timeout a client connection";
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Write out changes to configuration and state files...
|
|
|
*/
|
|
|
|
|
|
if (DirtyCleanTime && timeout > DirtyCleanTime)
|
|
|
{
|
|
|
timeout = DirtyCleanTime;
|
|
|
why = "write dirty config/state files";
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Check for any job activity...
|
|
|
*/
|
|
|
|
|
|
for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs);
|
|
|
job;
|
|
|
job = (cupsd_job_t *)cupsArrayNext(ActiveJobs))
|
|
|
{
|
|
|
if (job->cancel_time && job->cancel_time < timeout)
|
|
|
{
|
|
|
timeout = job->cancel_time;
|
|
|
why = "cancel stuck jobs";
|
|
|
}
|
|
|
|
|
|
if (job->kill_time && job->kill_time < timeout)
|
|
|
{
|
|
|
timeout = job->kill_time;
|
|
|
why = "kill unresponsive jobs";
|
|
|
}
|
|
|
|
|
|
if (job->state_value == IPP_JOB_HELD && job->hold_until < timeout)
|
|
|
{
|
|
|
timeout = job->hold_until;
|
|
|
why = "release held jobs";
|
|
|
}
|
|
|
|
|
|
if (job->state_value == IPP_JOB_PENDING && timeout > (now + 10))
|
|
|
{
|
|
|
timeout = now + 10;
|
|
|
why = "start pending jobs";
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Adjust from absolute to relative time. We add 1 second to the timeout since
|
|
|
* events occur after the timeout expires, and limit the timeout to 86400
|
|
|
* seconds (1 day) to avoid select() timeout limits present on some operating
|
|
|
* systems...
|
|
|
*/
|
|
|
|
|
|
timeout = timeout - now + 1;
|
|
|
|
|
|
if (timeout < 1)
|
|
|
timeout = 1;
|
|
|
else if (timeout > 86400)
|
|
|
timeout = 86400;
|
|
|
|
|
|
/*
|
|
|
* Log and return the timeout value...
|
|
|
*/
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s",
|
|
|
fds, timeout, why);
|
|
|
|
|
|
return (timeout);
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'sigchld_handler()' - Handle 'child' signals from old processes.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
sigchld_handler(int sig) /* I - Signal number */
|
|
|
{
|
|
|
(void)sig;
|
|
|
|
|
|
/*
|
|
|
* Flag that we have dead children...
|
|
|
*/
|
|
|
|
|
|
dead_children = 1;
|
|
|
|
|
|
/*
|
|
|
* Reset the signal handler as needed...
|
|
|
*/
|
|
|
|
|
|
#if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
|
|
|
signal(SIGCLD, sigchld_handler);
|
|
|
#endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
sighup_handler(int sig) /* I - Signal number */
|
|
|
{
|
|
|
(void)sig;
|
|
|
|
|
|
NeedReload = RELOAD_ALL;
|
|
|
ReloadTime = time(NULL);
|
|
|
|
|
|
#if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
|
|
|
signal(SIGHUP, sighup_handler);
|
|
|
#endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
sigterm_handler(int sig) /* I - Signal number */
|
|
|
{
|
|
|
(void)sig; /* remove compiler warnings... */
|
|
|
|
|
|
/*
|
|
|
* Flag that we should stop and return...
|
|
|
*/
|
|
|
|
|
|
stop_scheduler = 1;
|
|
|
}
|
|
|
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
/*
|
|
|
* 'service_add_listener()' - Bind an open fd as a Listener.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
service_add_listener(int fd, /* I - Socket file descriptor */
|
|
|
int idx) /* I - Listener number, for logging */
|
|
|
{
|
|
|
cupsd_listener_t *lis; /* Listeners array */
|
|
|
http_addr_t addr; /* Address variable */
|
|
|
socklen_t addrlen; /* Length of address */
|
|
|
char s[256]; /* String addresss */
|
|
|
|
|
|
|
|
|
addrlen = sizeof(addr);
|
|
|
|
|
|
if (getsockname(fd, (struct sockaddr *)&addr, &addrlen))
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_add_listener: Unable to get local address for listener #%d: %s", idx + 1, strerror(errno));
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Listener #%d at fd %d, \"%s\".", idx + 1, fd, httpAddrString(&addr, s, sizeof(s)));
|
|
|
|
|
|
/*
|
|
|
* Try to match the on-demand socket address to one of the listeners...
|
|
|
*/
|
|
|
|
|
|
for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
|
|
|
lis;
|
|
|
lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
|
|
|
if (httpAddrEqual(&lis->address, &addr))
|
|
|
break;
|
|
|
|
|
|
/*
|
|
|
* Add a new listener If there's no match...
|
|
|
*/
|
|
|
|
|
|
if (lis)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Matched existing listener #%d to %s.", idx + 1, httpAddrString(&(lis->address), s, sizeof(s)));
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Adding new listener #%d for %s.", idx + 1, httpAddrString(&addr, s, sizeof(s)));
|
|
|
|
|
|
if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_add_listener: Unable to allocate listener: %s.", strerror(errno));
|
|
|
exit(EXIT_FAILURE);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
cupsArrayAdd(Listeners, lis);
|
|
|
|
|
|
memcpy(&lis->address, &addr, sizeof(lis->address));
|
|
|
}
|
|
|
|
|
|
lis->fd = fd;
|
|
|
lis->on_demand = 1;
|
|
|
|
|
|
# ifdef HAVE_SSL
|
|
|
if (httpAddrPort(&(lis->address)) == 443)
|
|
|
lis->encryption = HTTP_ENCRYPT_ALWAYS;
|
|
|
# endif /* HAVE_SSL */
|
|
|
}
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'service_checkin()' - Check-in with launchd and collect the listening fds.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
service_checkin(void)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: pid=%d", (int)getpid());
|
|
|
|
|
|
#ifdef HAVE_LAUNCHD
|
|
|
if (OnDemand)
|
|
|
{
|
|
|
int error; /* Check-in error, if any */
|
|
|
size_t i, /* Looping var */
|
|
|
count; /* Number of listeners */
|
|
|
int *ld_sockets; /* Listener sockets */
|
|
|
|
|
|
# ifdef __APPLE__
|
|
|
/*
|
|
|
* Force "user initiated" priority for the main thread...
|
|
|
*/
|
|
|
|
|
|
pthread_set_qos_class_self_np(QOS_CLASS_USER_INITIATED, 0);
|
|
|
# endif /* __APPLE__ */
|
|
|
|
|
|
/*
|
|
|
* Check-in with launchd...
|
|
|
*/
|
|
|
|
|
|
if ((error = launch_activate_socket("Listeners", &ld_sockets, &count)) != 0)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets: %s", strerror(error));
|
|
|
exit(EXIT_FAILURE);
|
|
|
return; /* anti-compiler-warning */
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Try to match the launchd sockets to the cupsd listeners...
|
|
|
*/
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: %d listeners.", (int)count);
|
|
|
|
|
|
for (i = 0; i < count; i ++)
|
|
|
service_add_listener(ld_sockets[i], (int)i);
|
|
|
|
|
|
free(ld_sockets);
|
|
|
|
|
|
# ifdef __APPLE__
|
|
|
xpc_transaction_begin();
|
|
|
# endif /* __APPLE__ */
|
|
|
}
|
|
|
|
|
|
#elif defined(HAVE_SYSTEMD)
|
|
|
if (OnDemand)
|
|
|
{
|
|
|
int i, /* Looping var */
|
|
|
count; /* Number of listeners */
|
|
|
|
|
|
/*
|
|
|
* Check-in with systemd...
|
|
|
*/
|
|
|
|
|
|
if ((count = sd_listen_fds(0)) < 0)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets: %s", strerror(-count));
|
|
|
exit(EXIT_FAILURE);
|
|
|
return; /* anti-compiler-warning */
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Try to match the systemd sockets to the cupsd listeners...
|
|
|
*/
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: %d listeners.", count);
|
|
|
|
|
|
for (i = 0; i < count; i ++)
|
|
|
service_add_listener(SD_LISTEN_FDS_START + i, i);
|
|
|
}
|
|
|
|
|
|
#elif defined(HAVE_UPSTART)
|
|
|
if (OnDemand)
|
|
|
{
|
|
|
const char *e; /* Environment var */
|
|
|
int fd; /* File descriptor */
|
|
|
|
|
|
|
|
|
if (!(e = getenv("UPSTART_EVENTS")))
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: We did not get started via Upstart.");
|
|
|
exit(EXIT_FAILURE);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
if (strcasecmp(e, "socket"))
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: We did not get triggered via an Upstart socket event.");
|
|
|
exit(EXIT_FAILURE);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
if ((e = getenv("UPSTART_FDS")) == NULL)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets from UPSTART_FDS.");
|
|
|
exit(EXIT_FAILURE);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: UPSTART_FDS=%s", e);
|
|
|
|
|
|
fd = (int)strtol(e, NULL, 10);
|
|
|
if (fd < 0)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Could not parse UPSTART_FDS: %s", strerror(errno));
|
|
|
exit(EXIT_FAILURE);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Upstart only supportst a single on-demand socket file descriptor...
|
|
|
*/
|
|
|
|
|
|
service_add_listener(fd, 0);
|
|
|
}
|
|
|
#endif /* HAVE_LAUNCHD */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'service_checkout()' - Update the KeepAlive/PID file as needed.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
service_checkout(int shutdown) /* I - Shutting down? */
|
|
|
{
|
|
|
cups_file_t *fp; /* File */
|
|
|
char pidfile[1024]; /* PID/KeepAlive file */
|
|
|
|
|
|
|
|
|
/*
|
|
|
* When running on-demand, use the KeepAlive file, otherwise write a PID file
|
|
|
* to StateDir...
|
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
if (OnDemand)
|
|
|
{
|
|
|
int shared_printers = 0; /* Do we have shared printers? */
|
|
|
|
|
|
strlcpy(pidfile, CUPS_KEEPALIVE, sizeof(pidfile));
|
|
|
|
|
|
/*
|
|
|
* If printer sharing is on see if there are any actual shared printers...
|
|
|
*/
|
|
|
|
|
|
if (Browsing && BrowseLocalProtocols)
|
|
|
{
|
|
|
cupsd_printer_t *p = NULL; /* Current printer */
|
|
|
|
|
|
for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); p; p = (cupsd_printer_t *)cupsArrayNext(Printers))
|
|
|
{
|
|
|
if (p->shared)
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
shared_printers = (p != NULL);
|
|
|
}
|
|
|
|
|
|
if (cupsArrayCount(ActiveJobs) || /* Active jobs */
|
|
|
WebInterface || /* Web interface enabled */
|
|
|
NeedReload || /* Doing a reload */
|
|
|
shared_printers) /* Printers being shared */
|
|
|
{
|
|
|
/*
|
|
|
* Create or remove the "keep-alive" file based on whether there are active
|
|
|
* jobs or shared printers to advertise...
|
|
|
*/
|
|
|
|
|
|
shutdown = 0;
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
snprintf(pidfile, sizeof(pidfile), "%s/cupsd.pid", StateDir);
|
|
|
|
|
|
if (shutdown)
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Removing KeepAlive/PID file \"%s\".", pidfile);
|
|
|
|
|
|
unlink(pidfile);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
cupsdLogMessage(CUPSD_LOG_DEBUG, "Creating KeepAlive/PID file \"%s\".", pidfile);
|
|
|
|
|
|
if ((fp = cupsFileOpen(pidfile, "w")) != NULL)
|
|
|
{
|
|
|
/*
|
|
|
* Save the PID in the file...
|
|
|
*/
|
|
|
|
|
|
cupsFilePrintf(fp, "%d\n", (int)getpid());
|
|
|
cupsFileClose(fp);
|
|
|
}
|
|
|
else
|
|
|
cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create KeepAlive/PID file \"%s\": %s", pidfile, strerror(errno));
|
|
|
}
|
|
|
|
|
|
# ifdef __APPLE__
|
|
|
if (OnDemand && shutdown)
|
|
|
xpc_transaction_end();
|
|
|
# endif /* __APPLE__ */
|
|
|
}
|
|
|
|
|
|
|
|
|
/*
|
|
|
* 'usage()' - Show scheduler usage.
|
|
|
*/
|
|
|
|
|
|
static void
|
|
|
usage(int status) /* O - Exit status */
|
|
|
{
|
|
|
FILE *fp = status ? stderr : stdout; /* Output file */
|
|
|
|
|
|
|
|
|
_cupsLangPuts(fp, _("Usage: cupsd [options]"));
|
|
|
_cupsLangPuts(fp, _("Options:"));
|
|
|
_cupsLangPuts(fp, _("-c cupsd.conf Set cupsd.conf file to use."));
|
|
|
_cupsLangPuts(fp, _("-f Run in the foreground."));
|
|
|
_cupsLangPuts(fp, _("-F Run in the foreground but detach from console."));
|
|
|
_cupsLangPuts(fp, _("-h Show this usage message."));
|
|
|
#ifdef HAVE_ONDEMAND
|
|
|
_cupsLangPuts(fp, _("-l Run cupsd on demand."));
|
|
|
#endif /* HAVE_ONDEMAND */
|
|
|
_cupsLangPuts(fp, _("-s cups-files.conf Set cups-files.conf file to use."));
|
|
|
_cupsLangPuts(fp, _("-t Test the configuration file."));
|
|
|
|
|
|
exit(status);
|
|
|
}
|
