scheduler/server.c

   1 /*
   2  * Server start/stop routines for the CUPS scheduler.
   3  *
   4  * Copyright 2007-2019 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   * Create the default security profile...
  38   */
  39
  40   DefaultProfile = cupsdCreateProfile(0, 1);
  41
  42 #ifdef HAVE_SANDBOX_H
  43   if (!DefaultProfile && UseSandboxing && Sandboxing != CUPSD_SANDBOXING_OFF)
  44   {
  45    /*
  46     * Failure to create the sandbox profile means something really bad has
  47     * happened and we need to shutdown immediately.
  48     */
  49
  50     return;
  51   }
  52 #endif /* HAVE_SANDBOX_H */
  53
  54  /*
  55   * Start color management (as needed)...
  56   */
  57
  58   cupsdStartColor();
  59
  60  /*
  61   * Startup all the networking stuff...
  62   */
  63
  64   cupsdStartListening();
  65   cupsdStartBrowsing();
  66
  67  /*
  68   * Create a pipe for CGI processes...
  69   */
  70
  71   if (cupsdOpenPipe(CGIPipes))
  72     cupsdLogMessage(CUPSD_LOG_ERROR,
  73                     "cupsdStartServer: Unable to create pipes for CGI status!");
  74   else
  75   {
  76     CGIStatusBuffer = cupsdStatBufNew(CGIPipes[0], "[CGI]");
  77
  78     cupsdAddSelect(CGIPipes[0], (cupsd_selfunc_t)cupsdUpdateCGI, NULL, NULL);
  79   }
  80
  81  /*
  82   * Mark that the server has started and printers and jobs may be changed...
  83   */
  84
  85   LastEvent = CUPSD_EVENT_PRINTER_CHANGED | CUPSD_EVENT_JOB_STATE_CHANGED |
  86               CUPSD_EVENT_SERVER_STARTED;
  87   started   = 1;
  88
  89   cupsdSetBusyState(0);
  90 }
  91
  92
  93 /*
  94  * 'cupsdStopServer()' - Stop the server.
  95  */
  96
  97 void
  98 cupsdStopServer(void)
  99 {
 100   if (!started)
 101     return;
 102
 103  /*
 104   * Stop color management (as needed)...
 105   */
 106
 107   cupsdStopColor();
 108
 109  /*
 110   * Close all network clients...
 111   */
 112
 113   cupsdCloseAllClients();
 114   cupsdStopListening();
 115   cupsdStopBrowsing();
 116   cupsdStopAllNotifiers();
 117   cupsdDeleteAllCerts();
 118
 119   if (Clients)
 120   {
 121     cupsArrayDelete(Clients);
 122     Clients = NULL;
 123   }
 124
 125  /*
 126   * Close the pipe for CGI processes...
 127   */
 128
 129   if (CGIPipes[0] >= 0)
 130   {
 131     cupsdRemoveSelect(CGIPipes[0]);
 132
 133     cupsdStatBufDelete(CGIStatusBuffer);
 134     close(CGIPipes[1]);
 135
 136     CGIPipes[0] = -1;
 137     CGIPipes[1] = -1;
 138   }
 139
 140  /*
 141   * Close all log files...
 142   */
 143
 144   if (AccessFile != NULL)
 145   {
 146     if (AccessFile != LogStderr)
 147       cupsFileClose(AccessFile);
 148
 149     AccessFile = NULL;
 150   }
 151
 152   if (ErrorFile != NULL)
 153   {
 154     if (ErrorFile != LogStderr)
 155       cupsFileClose(ErrorFile);
 156
 157     ErrorFile = NULL;
 158   }
 159
 160   if (PageFile != NULL)
 161   {
 162     if (PageFile != LogStderr)
 163       cupsFileClose(PageFile);
 164
 165     PageFile = NULL;
 166   }
 167
 168  /*
 169   * Delete the default security profile...
 170   */
 171
 172   cupsdDestroyProfile(DefaultProfile);
 173   DefaultProfile = NULL;
 174
 175  /*
 176   * Expire subscriptions and clean out old jobs...
 177   */
 178
 179   cupsdExpireSubscriptions(NULL, NULL);
 180
 181   if (JobHistoryUpdate)
 182     cupsdCleanJobs();
 183
 184  /*
 185   * Write out any dirty files...
 186   */
 187
 188   if (DirtyFiles)
 189     cupsdCleanDirty();
 190
 191   started = 0;
 192 }