scheduler/server.c

   1 /*
   2  * Server start/stop routines for the CUPS scheduler.
   3  *
   4  * Copyright 2007-2017 by Apple Inc.
   5  * Copyright 1997-2006 by Easy Software Products, all rights reserved.
   6  *
   7  * Licensed under Apache License v2.0.  See the file "LICENSE" for more information.
   8  */
   9
  10 /*
  11  * Include necessary headers...
  12  */
  13
  14 #include <cups/http-private.h>
  15 #include "cupsd.h"
  16 #include <grp.h>
  17 #ifdef HAVE_NOTIFY_H
  18 #  include <notify.h>
  19 #endif /* HAVE_NOTIFY_H */
  20
  21
  22 /*
  23  * Local globals...
  24  */
  25
  26 static int              started = 0;    /* Did we start the server already? */
  27
  28
  29 /*
  30  * 'cupsdStartServer()' - Start the server.
  31  */
  32
  33 void
  34 cupsdStartServer(void)
  35 {
  36  /*
  37   * Start color management (as needed)...
  38   */
  39
  40   cupsdStartColor();
  41
  42  /*
  43   * Create the default security profile...
  44   */
  45
  46   DefaultProfile = cupsdCreateProfile(0, 1);
  47
  48  /*
  49   * Startup all the networking stuff...
  50   */
  51
  52   cupsdStartListening();
  53   cupsdStartBrowsing();
  54
  55  /*
  56   * Create a pipe for CGI processes...
  57   */
  58
  59   if (cupsdOpenPipe(CGIPipes))
  60     cupsdLogMessage(CUPSD_LOG_ERROR,
  61                     "cupsdStartServer: Unable to create pipes for CGI status!");
  62   else
  63   {
  64     CGIStatusBuffer = cupsdStatBufNew(CGIPipes[0], "[CGI]");
  65
  66     cupsdAddSelect(CGIPipes[0], (cupsd_selfunc_t)cupsdUpdateCGI, NULL, NULL);
  67   }
  68
  69  /*
  70   * Mark that the server has started and printers and jobs may be changed...
  71   */
  72
  73   LastEvent = CUPSD_EVENT_PRINTER_CHANGED | CUPSD_EVENT_JOB_STATE_CHANGED |
  74               CUPSD_EVENT_SERVER_STARTED;
  75   started   = 1;
  76
  77   cupsdSetBusyState(0);
  78 }
  79
  80
  81 /*
  82  * 'cupsdStopServer()' - Stop the server.
  83  */
  84
  85 void
  86 cupsdStopServer(void)
  87 {
  88   if (!started)
  89     return;
  90
  91  /*
  92   * Stop color management (as needed)...
  93   */
  94
  95   cupsdStopColor();
  96
  97  /*
  98   * Close all network clients...
  99   */
 100
 101   cupsdCloseAllClients();
 102   cupsdStopListening();
 103   cupsdStopBrowsing();
 104   cupsdStopAllNotifiers();
 105   cupsdDeleteAllCerts();
 106
 107   if (Clients)
 108   {
 109     cupsArrayDelete(Clients);
 110     Clients = NULL;
 111   }
 112
 113  /*
 114   * Close the pipe for CGI processes...
 115   */
 116
 117   if (CGIPipes[0] >= 0)
 118   {
 119     cupsdRemoveSelect(CGIPipes[0]);
 120
 121     cupsdStatBufDelete(CGIStatusBuffer);
 122     close(CGIPipes[1]);
 123
 124     CGIPipes[0] = -1;
 125     CGIPipes[1] = -1;
 126   }
 127
 128  /*
 129   * Close all log files...
 130   */
 131
 132   if (AccessFile != NULL)
 133   {
 134     if (AccessFile != LogStderr)
 135       cupsFileClose(AccessFile);
 136
 137     AccessFile = NULL;
 138   }
 139
 140   if (ErrorFile != NULL)
 141   {
 142     if (ErrorFile != LogStderr)
 143       cupsFileClose(ErrorFile);
 144
 145     ErrorFile = NULL;
 146   }
 147
 148   if (PageFile != NULL)
 149   {
 150     if (PageFile != LogStderr)
 151       cupsFileClose(PageFile);
 152
 153     PageFile = NULL;
 154   }
 155
 156  /*
 157   * Delete the default security profile...
 158   */
 159
 160   cupsdDestroyProfile(DefaultProfile);
 161   DefaultProfile = NULL;
 162
 163  /*
 164   * Write out any dirty files...
 165   */
 166
 167   if (DirtyFiles)
 168     cupsdCleanDirty();
 169
 170   started = 0;
 171 }