]> git.ipfire.org Git - thirdparty/cups.git/blobdiff - scheduler/sysman.c
Merge changes from CUPS 1.4svn-r8628.
[thirdparty/cups.git] / scheduler / sysman.c
index 7590a205bbc9c7ae96079a9a3877115cfd0c43e3..212f0fdd3e61325007054a32c41fc3413699af99 100644 (file)
@@ -1,37 +1,34 @@
 /*
- * "$Id: sysman.c 177 2006-06-21 00:20:03Z jlovell $"
+ * "$Id: sysman.c 7928 2008-09-10 22:14:22Z mike $"
  *
  *   System management definitions for the Common UNIX Printing System (CUPS).
  *
+ *   Copyright 2007-2009 by Apple Inc.
  *   Copyright 2006 by Easy Software Products.
  *
  *   These coded instructions, statements, and computer programs are the
- *   property of Easy Software Products and are protected by Federal
- *   copyright law.  Distribution and use rights are outlined in the file
- *   "LICENSE.txt" which should have been included with this file.  If this
- *   file is missing or damaged please contact Easy Software Products
- *   at:
- *
- *       Attn: CUPS Licensing Information
- *       Easy Software Products
- *       44141 Airport View Drive, Suite 204
- *       Hollywood, Maryland 20636 USA
- *
- *       Voice: (301) 373-9600
- *       EMail: cups-info@cups.org
- *         WWW: http://www.cups.org
+ *   property of Apple Inc. and are protected by Federal copyright
+ *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
+ *   which should have been included with this file.  If this file is
+ *   file is missing or damaged, see the license at "http://www.cups.org/".
  *
  * Contents:
  *
+ *   cupsdCleanDirty()               - Write dirty config and state files.
+ *   cupsdMarkDirty()                - Mark config or state files as needing a
+ *                                     write.
+ *   cupsdSetBusyState()             - Let the system know when we are busy
+ *                                     doing something.
+ *   cupsdAllowSleep()               - Tell the OS it is now OK to sleep.
  *   cupsdStartSystemMonitor()       - Start monitoring for system change.
  *   cupsdStopSystemMonitor()        - Stop monitoring for system change.
- *   cupsdUpdateSystemMonitor()      - Update the current system state.
  *   sysEventThreadEntry()           - A thread to receive power and computer
  *                                     name change notifications.
  *   sysEventPowerNotifier()         - Handle power notification events.
  *   sysEventConfigurationNotifier() - Computer name changed notification
  *                                     callback.
  *   sysEventTimerNotifier()         - Handle delayed event notifications.
+ *   sysUpdate()                     - Update the current system state.
  */
 
 
  */
 
 #include "cupsd.h"
+#ifdef HAVE_VPROC_TRANSACTION_BEGIN
+#  include <vproc.h>
+#endif /* HAVE_VPROC_TRANSACTION_BEGIN */
 
 
 /*
- * Power management is a new addition to CUPS.  Right now it is only
- * implemented on MacOS X, but essentially we use these three functions
- * to let the OS know when it is OK to put the system to sleep, typically
- * when we are not in the middle of printing a job.
+ * The system management functions cover disk and power management which
+ * are primarily used on portable computers.
+ *
+ * Disk management involves delaying the write of certain configuration
+ * and state files to minimize the number of times the disk has to spin
+ * up.
+ *
+ * Power management support is currently only implemented on MacOS X, but
+ * essentially we use four functions to let the OS know when it is OK to
+ * put the system to idle sleep, typically when we are not in the middle of
+ * printing a job.
  *
- * Once put to sleep, we invalidate all remote printers since it is
- * common to wake up in a new location.
+ * Once put to sleep, we invalidate all remote printers since it is common
+ * to wake up in a new location/on a new wireless network.
  */
 
+
+/*
+ * 'cupsdCleanDirty()' - Write dirty config and state files.
+ */
+
+void
+cupsdCleanDirty(void)
+{
+  if (DirtyFiles & CUPSD_DIRTY_PRINTERS)
+    cupsdSaveAllPrinters();
+
+  if (DirtyFiles & CUPSD_DIRTY_CLASSES)
+    cupsdSaveAllClasses();
+
+  if (DirtyFiles & CUPSD_DIRTY_REMOTE)
+    cupsdSaveRemoteCache();
+
+  if (DirtyFiles & CUPSD_DIRTY_PRINTCAP)
+    cupsdWritePrintcap();
+
+  if (DirtyFiles & CUPSD_DIRTY_JOBS)
+  {
+    cupsd_job_t        *job;                   /* Current job */
+
+    cupsdSaveAllJobs();
+
+    for (job = (cupsd_job_t *)cupsArrayFirst(Jobs);
+         job;
+        job = (cupsd_job_t *)cupsArrayNext(Jobs))
+      if (job->dirty)
+        cupsdSaveJob(job);
+  }
+
+  if (DirtyFiles & CUPSD_DIRTY_SUBSCRIPTIONS)
+    cupsdSaveAllSubscriptions();
+
+  DirtyFiles     = CUPSD_DIRTY_NONE;
+  DirtyCleanTime = 0;
+
+  cupsdSetBusyState();
+}
+
+
+/*
+ * 'cupsdMarkDirty()' - Mark config or state files as needing a write.
+ */
+
+void
+cupsdMarkDirty(int what)               /* I - What file(s) are dirty? */
+{
+  if (what == CUPSD_DIRTY_PRINTCAP && !Printcap)
+    return;
+
+  DirtyFiles |= what;
+
+  if (!DirtyCleanTime)
+    DirtyCleanTime = time(NULL) + DirtyCleanInterval;
+
+  cupsdSetBusyState();
+}
+
+
+/*
+ * 'cupsdSetBusyState()' - Let the system know when we are busy doing something.
+ */
+
+void
+cupsdSetBusyState(void)
+{
+  int          newbusy;                /* New busy state */
+  static int   busy = 0;               /* Current busy state */
+  static const char * const busy_text[] =
+  {                                    /* Text for busy states */
+    "Not busy",
+    "Dirty files",
+    "Printing jobs",
+    "Printing jobs and dirty files",
+    "Active clients",
+    "Active clients and dirty files",
+    "Active clients and printing jobs",
+    "Active clients, printing jobs, and dirty files"
+  };
+#ifdef HAVE_VPROC_TRANSACTION_BEGIN
+  static vproc_transaction_t vtran = 0;        /* Current busy transaction */
+#endif /* HAVE_VPROC_TRANSACTION_BEGIN */
+
+
+  newbusy = (DirtyCleanTime ? 1 : 0) |
+            (cupsArrayCount(PrintingJobs) ? 2 : 0) |
+           (cupsArrayCount(ActiveClients) ? 4 : 0);
+
+  if (newbusy != busy)
+  {
+    busy = newbusy;
+
+#ifdef HAVE_VPROC_TRANSACTION_BEGIN
+    if (busy && !vtran)
+      vtran = vproc_transaction_begin(NULL);
+    else if (!busy && vtran)
+    {
+      vproc_transaction_end(NULL, vtran);
+      vtran = 0;
+    }
+#endif /* HAVE_VPROC_TRANSACTION_BEGIN */
+
+    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSetBusyState: %s", busy_text[busy]);
+  }
+}
+
+
 #ifdef __APPLE__
 /*
  * This is the Apple-specific system event code.  It works by creating
@@ -115,12 +232,20 @@ static CFRunLoopRef       SysEventRunloop = NULL;
                                        /* The runloop. Access must be protected! */
 static CFStringRef     ComputerNameKey = NULL,
                                        /* Computer name key */
-                       NetworkGlobalKey = NULL,
-                                       /* Network global key */
+                       BTMMKey = NULL, /* Back to My Mac key */
+                       NetworkGlobalKeyIPv4 = NULL,
+                                       /* Network global IPv4 key */
+                       NetworkGlobalKeyIPv6 = NULL,
+                                       /* Network global IPv6 key */
+                       NetworkGlobalKeyDNS = NULL,
+                                       /* Network global DNS key */
                        HostNamesKey = NULL,
                                        /* Host name key */
-                       NetworkInterfaceKey = NULL;
+                       NetworkInterfaceKeyIPv4 = NULL,
+                                       /* Netowrk interface key */
+                       NetworkInterfaceKeyIPv6 = NULL;
                                        /* Netowrk interface key */
+static cupsd_sysevent_t        LastSysEvent;   /* Last system event (for delayed sleep) */
 
 
 /* 
@@ -135,6 +260,21 @@ static void        sysEventConfigurationNotifier(SCDynamicStoreRef store,
                                              CFArrayRef changedKeys,
                                              void *context);
 static void    sysEventTimerNotifier(CFRunLoopTimerRef timer, void *context);
+static void    sysUpdate(void);
+
+
+/*
+ * 'cupsdAllowSleep()' - Tell the OS it is now OK to sleep.
+ */
+
+void
+cupsdAllowSleep(void)
+{
+  cupsdCleanDirty();
+
+  IOAllowPowerChange(LastSysEvent.powerKernelPort,
+                    LastSysEvent.powerNotificationID);
+}
 
 
 /*
@@ -154,10 +294,7 @@ cupsdStartSystemMonitor(void)
     return;
   }
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "cupsdStartSystemMonitor: Adding fd %d to InputSet...",
-                  SysEventPipes[0]);
-  FD_SET(SysEventPipes[0], InputSet);
+  cupsdAddSelect(SysEventPipes[0], (cupsd_selfunc_t)sysUpdate, NULL, NULL);
 
  /*
   * Set non-blocking mode on the descriptor we will be receiving notification
@@ -214,183 +351,12 @@ cupsdStopSystemMonitor(void)
 
   if (SysEventPipes[0] >= 0)
   {
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                    "cupsdStopSystemMonitor: Removing fd %d from InputSet...",
-                   SysEventPipes[0]);
-
-    FD_CLR(SysEventPipes[0], InputSet);
-
+    cupsdRemoveSelect(SysEventPipes[0]);
     cupsdClosePipe(SysEventPipes);
   }
 }
 
 
-/*
- * 'cupsdUpdateSystemMonitor()' - Update the current system state.
- */
-
-void
-cupsdUpdateSystemMonitor(void)
-{
-  int                  i;              /* Looping var */
-  cupsd_sysevent_t     sysevent;       /* The system event */
-  cupsd_printer_t      *p;             /* Printer information */
-
-
- /*
-  * Drain the event pipe...
-  */
-
-  while (read((int)SysEventPipes[0], &sysevent, sizeof(sysevent))
-             == sizeof(sysevent))
-  {
-    if (sysevent.event & SYSEVENT_CANSLEEP)
-    {
-     /*
-      * If there are active printers that don't have the connecting-to-device
-      * printer-state-reason then cancel the sleep request (i.e. this reason
-      * indicates a job that is not yet connected to the printer)...
-      */
-
-      for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
-           p;
-          p = (cupsd_printer_t *)cupsArrayNext(Printers))
-      {
-        if (p->job)
-        {
-         for (i = 0; i < p->num_reasons; i ++)
-           if (!strcmp(p->reasons[i], "connecting-to-device"))
-             break;
-
-         if (!p->num_reasons || i >= p->num_reasons)
-           break;
-        }
-      }
-
-      if (p)
-      {
-        cupsdLogMessage(CUPSD_LOG_INFO,
-                       "System sleep canceled because printer %s is active",
-                       p->name);
-        IOCancelPowerChange(sysevent.powerKernelPort,
-                           sysevent.powerNotificationID);
-      }
-      else
-      {
-       cupsdLogMessage(CUPSD_LOG_DEBUG, "System wants to sleep");
-        IOAllowPowerChange(sysevent.powerKernelPort,
-                          sysevent.powerNotificationID);
-      }
-    }
-
-    if (sysevent.event & SYSEVENT_WILLSLEEP)
-    {
-      cupsdLogMessage(CUPSD_LOG_DEBUG, "System going to sleep");
-
-      Sleeping = 1;
-
-      cupsdStopAllJobs();
-      cupsdSaveAllJobs();
-
-      for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
-           p;
-          p = (cupsd_printer_t *)cupsArrayNext(Printers))
-      {
-       if (p->type & CUPS_PRINTER_REMOTE)
-       {
-         cupsdLogMessage(CUPSD_LOG_DEBUG,
-                         "Deleting remote destination \"%s\"", p->name);
-         cupsArraySave(Printers);
-         cupsdDeletePrinter(p, 0);
-         cupsArrayRestore(Printers);
-       }
-       else
-       {
-        /* TODO: Possibly update when MDNS support is added? */
-         cupsdLogMessage(CUPSD_LOG_DEBUG,
-                         "Deregistering local printer \"%s\"", p->name);
-         cupsdSendBrowseDelete(p);
-       }
-      }
-
-      IOAllowPowerChange(sysevent.powerKernelPort,
-                         sysevent.powerNotificationID);
-    }
-
-    if (sysevent.event & SYSEVENT_WOKE)
-    {
-      cupsdLogMessage(CUPSD_LOG_DEBUG, "System woke from sleep");
-      IOAllowPowerChange(sysevent.powerKernelPort,
-                         sysevent.powerNotificationID);
-      Sleeping = 0;
-      cupsdCheckJobs();
-    }
-
-    if (sysevent.event & SYSEVENT_NETCHANGED)
-    {
-      if (!Sleeping)
-      {
-        cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "System network configuration changed");
-
-       /*
-        * Force an update of the list of network interfaces in 2 seconds.
-        */
-
-        NetIFTime = time(NULL) - 58;
-
-       /*
-        * Resetting browse_time before calling cupsdSendBrowseList causes
-       * browse packets to be sent for local shared printers.
-        */
-
-       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
-            p;
-            p = (cupsd_printer_t *)cupsArrayNext(Printers))
-         p->browse_time = 0;
-
-        cupsdSendBrowseList();
-      }
-      else
-        cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "System network configuration changed; "
-                       "ignored while sleeping");
-    }
-
-    if (sysevent.event & SYSEVENT_NAMECHANGED)
-    {
-      if (!Sleeping)
-      {
-        cupsdLogMessage(CUPSD_LOG_DEBUG, "Computer name changed");
-
-       /*
-       * De-register the individual printers...
-       */
-
-       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
-            p;
-            p = (cupsd_printer_t *)cupsArrayNext(Printers))
-         cupsdSendBrowseDelete(p);
-
-       /*
-       * Now re-register them...
-       *
-       * TODO: This might need updating for MDNS.
-       */
-
-       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
-            p;
-            p = (cupsd_printer_t *)cupsArrayNext(Printers))
-         p->browse_time = 0;
-      }
-      else
-        cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "Computer name changed; ignored while sleeping");
-    }
-  }
-}
-
-
 /*
  * 'sysEventThreadEntry()' - A thread to receive power and computer name
  *                           change notifications.
@@ -406,8 +372,8 @@ sysEventThreadEntry(void)
   SCDynamicStoreRef    store    = NULL;/* System Config dynamic store */
   CFRunLoopSourceRef   powerRLS = NULL,/* Power runloop source */
                        storeRLS = NULL;/* System Config runloop source */
-  CFStringRef          key[3],         /* System Config keys */
-                       pattern[1];     /* System Config patterns */
+  CFStringRef          key[6],         /* System Config keys */
+                       pattern[2];     /* System Config patterns */
   CFArrayRef           keys = NULL,    /* System Config key array*/
                        patterns = NULL;/* System Config pattern array */
   SCDynamicStoreContext        storeContext;   /* Dynamic store context */
@@ -442,48 +408,78 @@ sysEventThreadEntry(void)
   bzero(&storeContext, sizeof(storeContext));
   storeContext.info = &threadData;
 
-  store = SCDynamicStoreCreate(NULL, CFSTR("cupsd"),
+  store = SCDynamicStoreCreate(kCFAllocatorDefault, CFSTR("cupsd"),
                                sysEventConfigurationNotifier, &storeContext);
 
   if (!ComputerNameKey)
-    ComputerNameKey = SCDynamicStoreKeyCreateComputerName(NULL);
+    ComputerNameKey = SCDynamicStoreKeyCreateComputerName(kCFAllocatorDefault);
+
+  if (!BTMMKey)
+    BTMMKey = SCDynamicStoreKeyCreate(kCFAllocatorDefault,
+                                      CFSTR("Setup:/Network/BackToMyMac"));
 
-  if (!NetworkGlobalKey)
-    NetworkGlobalKey =
-        SCDynamicStoreKeyCreateNetworkGlobalEntity(NULL,
+  if (!NetworkGlobalKeyIPv4)
+    NetworkGlobalKeyIPv4 =
+        SCDynamicStoreKeyCreateNetworkGlobalEntity(kCFAllocatorDefault,
                                                    kSCDynamicStoreDomainState,
                                                   kSCEntNetIPv4);
 
+  if (!NetworkGlobalKeyIPv6)
+    NetworkGlobalKeyIPv6 =
+        SCDynamicStoreKeyCreateNetworkGlobalEntity(kCFAllocatorDefault,
+                                                   kSCDynamicStoreDomainState,
+                                                  kSCEntNetIPv6);
+
+  if (!NetworkGlobalKeyDNS)
+    NetworkGlobalKeyDNS = 
+       SCDynamicStoreKeyCreateNetworkGlobalEntity(kCFAllocatorDefault, 
+                                                  kSCDynamicStoreDomainState,
+                                                  kSCEntNetDNS);
+
   if (!HostNamesKey)
-    HostNamesKey = SCDynamicStoreKeyCreateHostNames(NULL);
+    HostNamesKey = SCDynamicStoreKeyCreateHostNames(kCFAllocatorDefault);
 
-  if (!NetworkInterfaceKey)
-    NetworkInterfaceKey =
-        SCDynamicStoreKeyCreateNetworkInterfaceEntity(NULL,
+  if (!NetworkInterfaceKeyIPv4)
+    NetworkInterfaceKeyIPv4 =
+        SCDynamicStoreKeyCreateNetworkInterfaceEntity(kCFAllocatorDefault,
                                                      kSCDynamicStoreDomainState,
                                                      kSCCompAnyRegex,
                                                      kSCEntNetIPv4);
 
-  if (store && ComputerNameKey && NetworkGlobalKey && HostNamesKey &&
-      NetworkInterfaceKey)
+  if (!NetworkInterfaceKeyIPv6)
+    NetworkInterfaceKeyIPv6 =
+        SCDynamicStoreKeyCreateNetworkInterfaceEntity(kCFAllocatorDefault,
+                                                     kSCDynamicStoreDomainState,
+                                                     kSCCompAnyRegex,
+                                                     kSCEntNetIPv6);
+
+  if (store && ComputerNameKey && HostNamesKey &&
+      NetworkGlobalKeyIPv4 && NetworkGlobalKeyIPv6 && NetworkGlobalKeyDNS &&
+      NetworkInterfaceKeyIPv4 && NetworkInterfaceKeyIPv6)
   {
     key[0]     = ComputerNameKey;
-    key[1]     = NetworkGlobalKey;
-    key[2]     = HostNamesKey;
-    pattern[0] = NetworkInterfaceKey;
-
-    keys     = CFArrayCreate(NULL, (const void **)key,
-                                    sizeof(key) / sizeof(key[0]),
-                                   &kCFTypeArrayCallBacks);
-    patterns = CFArrayCreate(NULL, (const void **)pattern,
+    key[1]     = BTMMKey;
+    key[2]     = NetworkGlobalKeyIPv4;
+    key[3]     = NetworkGlobalKeyIPv6;
+    key[4]     = NetworkGlobalKeyDNS;
+    key[5]     = HostNamesKey;
+
+    pattern[0] = NetworkInterfaceKeyIPv4;
+    pattern[1] = NetworkInterfaceKeyIPv6;
+
+    keys     = CFArrayCreate(kCFAllocatorDefault, (const void **)key,
+                            sizeof(key) / sizeof(key[0]),
+                            &kCFTypeArrayCallBacks);
+
+    patterns = CFArrayCreate(kCFAllocatorDefault, (const void **)pattern,
                              sizeof(pattern) / sizeof(pattern[0]),
                             &kCFTypeArrayCallBacks);
 
     if (keys && patterns &&
         SCDynamicStoreSetNotificationKeys(store, keys, patterns))
     {
-      if ((storeRLS = SCDynamicStoreCreateRunLoopSource(NULL, store, 0))
-              != NULL)
+      if ((storeRLS = SCDynamicStoreCreateRunLoopSource(kCFAllocatorDefault,
+                                                        store, 0)) != NULL)
       {
        CFRunLoopAddSource(CFRunLoopGetCurrent(), storeRLS,
                           kCFRunLoopDefaultMode);
@@ -517,7 +513,7 @@ sysEventThreadEntry(void)
   timerContext.info = &threadData;
 
   threadData.timerRef =
-      CFRunLoopTimerCreate(NULL,
+      CFRunLoopTimerCreate(kCFAllocatorDefault,
                            CFAbsoluteTimeGetCurrent() + (86400L * 365L * 10L), 
                           86400L * 365L * 10L, 0, 0, sysEventTimerNotifier,
                           &timerContext);
@@ -621,9 +617,9 @@ sysEventPowerNotifier(
 
     case kIOMessageSystemWillNotPowerOff:
     case kIOMessageSystemWillNotSleep:
-#ifdef kIOMessageSystemWillPowerOn
+#  ifdef kIOMessageSystemWillPowerOn
     case kIOMessageSystemWillPowerOn:
-#endif /* kIOMessageSystemWillPowerOn */
+#  endif /* kIOMessageSystemWillPowerOn */
     default:
        sendit = 0;
        break;
@@ -660,7 +656,7 @@ sysEventPowerNotifier(
 
 
 /*
- * 'sysEventConfigurationNotifier()' - Computer name changed notification
+ * 'sysEventConfigurationNotifier()' - Network configuration change notification
  *                                     callback.
  */
 
@@ -679,14 +675,20 @@ sysEventConfigurationNotifier(
 
   CFRange range = CFRangeMake(0, CFArrayGetCount(changedKeys));
 
-  if (CFArrayContainsValue(changedKeys, range, ComputerNameKey))
+  if (CFArrayContainsValue(changedKeys, range, ComputerNameKey) ||
+      CFArrayContainsValue(changedKeys, range, BTMMKey))
     threadData->sysevent.event |= SYSEVENT_NAMECHANGED;
-
-  if (CFArrayContainsValue(changedKeys, range, NetworkGlobalKey) ||
-      CFArrayContainsValue(changedKeys, range, HostNamesKey) ||
-      CFArrayContainsValue(changedKeys, range, NetworkInterfaceKey))
+  else
+  {
     threadData->sysevent.event |= SYSEVENT_NETCHANGED;
 
+   /*
+    * Indicate the network interface list needs updating...
+    */
+
+    NetIFUpdate = 1;
+  }
+
  /*
   * Because we registered for several different kinds of change notifications 
   * this callback usually gets called several times in a row. We use a timer to 
@@ -694,7 +696,7 @@ sysEventConfigurationNotifier(
   */
 
   CFRunLoopTimerSetNextFireDate(threadData->timerRef, 
-                               CFAbsoluteTimeGetCurrent() + 2);
+                               CFAbsoluteTimeGetCurrent() + 5);
 }
 
 
@@ -723,9 +725,189 @@ sysEventTimerNotifier(
     threadData->sysevent.event = 0;
   }
 }
+
+
+/*
+ * 'sysUpdate()' - Update the current system state.
+ */
+
+static void
+sysUpdate(void)
+{
+  int                  i;              /* Looping var */
+  cupsd_sysevent_t     sysevent;       /* The system event */
+  cupsd_printer_t      *p;             /* Printer information */
+
+
+ /*
+  * Drain the event pipe...
+  */
+
+  while (read((int)SysEventPipes[0], &sysevent, sizeof(sysevent))
+             == sizeof(sysevent))
+  {
+    if (sysevent.event & SYSEVENT_CANSLEEP)
+    {
+     /*
+      * If there are active printers that don't have the connecting-to-device
+      * printer-state-reason then cancel the sleep request (i.e. this reason
+      * indicates a job that is not yet connected to the printer)...
+      */
+
+      for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+           p;
+          p = (cupsd_printer_t *)cupsArrayNext(Printers))
+      {
+        if (p->job)
+        {
+         for (i = 0; i < p->num_reasons; i ++)
+           if (!strcmp(p->reasons[i], "connecting-to-device"))
+             break;
+
+         if (!p->num_reasons || i >= p->num_reasons)
+           break;
+        }
+      }
+
+      if (p)
+      {
+        cupsdLogMessage(CUPSD_LOG_INFO,
+                       "System sleep canceled because printer %s is active",
+                       p->name);
+        IOCancelPowerChange(sysevent.powerKernelPort,
+                           sysevent.powerNotificationID);
+      }
+      else
+      {
+       cupsdLogMessage(CUPSD_LOG_DEBUG, "System wants to sleep");
+        IOAllowPowerChange(sysevent.powerKernelPort,
+                          sysevent.powerNotificationID);
+      }
+    }
+
+    if (sysevent.event & SYSEVENT_WILLSLEEP)
+    {
+      cupsdLogMessage(CUPSD_LOG_DEBUG, "System going to sleep");
+
+      Sleeping = 1;
+
+      for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+           p;
+          p = (cupsd_printer_t *)cupsArrayNext(Printers))
+      {
+       if (p->type & CUPS_PRINTER_DISCOVERED)
+       {
+         cupsdLogMessage(CUPSD_LOG_DEBUG,
+                         "Deleting remote destination \"%s\"", p->name);
+         cupsArraySave(Printers);
+         cupsdDeletePrinter(p, 0);
+         cupsArrayRestore(Printers);
+       }
+       else
+       {
+         cupsdLogMessage(CUPSD_LOG_DEBUG,
+                         "Deregistering local printer \"%s\"", p->name);
+         cupsdDeregisterPrinter(p, 0);
+       }
+      }
+
+      cupsdCleanDirty();
+
+     /*
+      * If we have no printing jobs, allow the power change immediately.
+      * Otherwise set the SleepJobs time to 15 seconds in the future when
+      * we'll take more drastic measures...
+      */
+
+      if (cupsArrayCount(PrintingJobs) == 0)
+       IOAllowPowerChange(sysevent.powerKernelPort,
+                          sysevent.powerNotificationID);
+      else
+      {
+        LastSysEvent = sysevent;
+        SleepJobs    = time(NULL) + 15;
+      }
+    }
+
+    if (sysevent.event & SYSEVENT_WOKE)
+    {
+      cupsdLogMessage(CUPSD_LOG_DEBUG, "System woke from sleep");
+      IOAllowPowerChange(sysevent.powerKernelPort,
+                         sysevent.powerNotificationID);
+      Sleeping = 0;
+      cupsdCheckJobs();
+    }
+
+    if (sysevent.event & SYSEVENT_NETCHANGED)
+    {
+      if (!Sleeping)
+      {
+        cupsdLogMessage(CUPSD_LOG_DEBUG,
+                       "System network configuration changed");
+
+       /*
+        * Resetting browse_time before calling cupsdSendBrowseList causes
+       * browse packets to be sent for local shared printers.
+        */
+
+       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+            p;
+            p = (cupsd_printer_t *)cupsArrayNext(Printers))
+         p->browse_time = 0;
+
+        cupsdSendBrowseList();
+       cupsdRestartPolling();
+      }
+      else
+        cupsdLogMessage(CUPSD_LOG_DEBUG,
+                       "System network configuration changed; "
+                       "ignored while sleeping");
+    }
+
+    if (sysevent.event & SYSEVENT_NAMECHANGED)
+    {
+      if (!Sleeping)
+      {
+        cupsdLogMessage(CUPSD_LOG_DEBUG,
+                       "Computer name or BTMM domains changed");
+
+       /*
+       * De-register the individual printers...
+       */
+
+       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+            p;
+            p = (cupsd_printer_t *)cupsArrayNext(Printers))
+         cupsdDeregisterPrinter(p, 1);
+
+       /*
+        * Update the computer name and BTMM domain list...
+       */
+
+       cupsdUpdateDNSSDName();
+
+       /*
+       * Now re-register them...
+       */
+
+       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+            p;
+            p = (cupsd_printer_t *)cupsArrayNext(Printers))
+       {
+         p->browse_time = 0;
+         cupsdRegisterPrinter(p);
+       }
+      }
+      else
+        cupsdLogMessage(CUPSD_LOG_DEBUG,
+                       "Computer name or BTMM domains changed; ignored while "
+                       "sleeping");
+    }
+  }
+}
 #endif /* __APPLE__ */
 
 
 /*
- * End of "$Id: sysman.c 177 2006-06-21 00:20:03Z jlovell $".
+ * End of "$Id: sysman.c 7928 2008-09-10 22:14:22Z mike $".
  */