scheduler/server.c

   1 /*
   2  * Server start/stop routines for the CUPS scheduler.
   3  *
   4  * Copyright 2007-2012 by Apple Inc.
   5  * Copyright 1997-2006 by Easy Software Products, all rights reserved.
   6  *
   7  * These coded instructions, statements, and computer programs are the
   8  * property of Apple Inc. and are protected by Federal copyright
   9  * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  10  * which should have been included with this file.  If this file is
  11  * missing or damaged, see the license at "http://www.cups.org/".
  12  */
  13
  14 /*
  15  * Include necessary headers...
  16  */
  17
  18 #include <cups/http-private.h>
  19 #include "cupsd.h"
  20 #include <grp.h>
  21 #ifdef HAVE_NOTIFY_H
  22 #  include <notify.h>
  23 #endif /* HAVE_NOTIFY_H */
  24
  25
  26 /*
  27  * Local globals...
  28  */
  29
  30 static int              started = 0;    /* Did we start the server already? */
  31
  32
  33 /*
  34  * 'cupsdStartServer()' - Start the server.
  35  */
  36
  37 void
  38 cupsdStartServer(void)
  39 {
  40  /*
  41   * Start color management (as needed)...
  42   */
  43
  44   cupsdStartColor();
  45
  46  /*
  47   * Create the default security profile...
  48   */
  49
  50   DefaultProfile = cupsdCreateProfile(0, 1);
  51
  52  /*
  53   * Startup all the networking stuff...
  54   */
  55
  56   cupsdStartListening();
  57   cupsdStartBrowsing();
  58
  59  /*
  60   * Create a pipe for CGI processes...
  61   */
  62
  63   if (cupsdOpenPipe(CGIPipes))
  64     cupsdLogMessage(CUPSD_LOG_ERROR,
  65                     "cupsdStartServer: Unable to create pipes for CGI status!");
  66   else
  67   {
  68     CGIStatusBuffer = cupsdStatBufNew(CGIPipes[0], "[CGI]");
  69
  70     cupsdAddSelect(CGIPipes[0], (cupsd_selfunc_t)cupsdUpdateCGI, NULL, NULL);
  71   }
  72
  73  /*
  74   * Mark that the server has started and printers and jobs may be changed...
  75   */
  76
  77   LastEvent = CUPSD_EVENT_PRINTER_CHANGED | CUPSD_EVENT_JOB_STATE_CHANGED |
  78               CUPSD_EVENT_SERVER_STARTED;
  79   started   = 1;
  80
  81   cupsdSetBusyState();
  82 }
  83
  84
  85 /*
  86  * 'cupsdStopServer()' - Stop the server.
  87  */
  88
  89 void
  90 cupsdStopServer(void)
  91 {
  92   if (!started)
  93     return;
  94
  95  /*
  96   * Stop color management (as needed)...
  97   */
  98
  99   cupsdStopColor();
 100
 101  /*
 102   * Close all network clients...
 103   */
 104
 105   cupsdCloseAllClients();
 106   cupsdStopListening();
 107   cupsdStopBrowsing();
 108   cupsdStopAllNotifiers();
 109   cupsdDeleteAllCerts();
 110
 111   if (Clients)
 112   {
 113     cupsArrayDelete(Clients);
 114     Clients = NULL;
 115   }
 116
 117  /*
 118   * Close the pipe for CGI processes...
 119   */
 120
 121   if (CGIPipes[0] >= 0)
 122   {
 123     cupsdRemoveSelect(CGIPipes[0]);
 124
 125     cupsdStatBufDelete(CGIStatusBuffer);
 126     close(CGIPipes[1]);
 127
 128     CGIPipes[0] = -1;
 129     CGIPipes[1] = -1;
 130   }
 131
 132  /*
 133   * Close all log files...
 134   */
 135
 136   if (AccessFile != NULL)
 137   {
 138     if (AccessFile != LogStderr)
 139       cupsFileClose(AccessFile);
 140
 141     AccessFile = NULL;
 142   }
 143
 144   if (ErrorFile != NULL)
 145   {
 146     if (ErrorFile != LogStderr)
 147       cupsFileClose(ErrorFile);
 148
 149     ErrorFile = NULL;
 150   }
 151
 152   if (PageFile != NULL)
 153   {
 154     if (PageFile != LogStderr)
 155       cupsFileClose(PageFile);
 156
 157     PageFile = NULL;
 158   }
 159
 160  /*
 161   * Delete the default security profile...
 162   */
 163
 164   cupsdDestroyProfile(DefaultProfile);
 165   DefaultProfile = NULL;
 166
 167  /*
 168   * Write out any dirty files...
 169   */
 170
 171   if (DirtyFiles)
 172     cupsdCleanDirty();
 173
 174   started = 0;
 175 }