scheduler/server.c

   1 /*
   2  * "$Id: server.c 6649 2007-07-11 21:46:42Z mike $"
   3  *
   4  *   Server start/stop routines for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 2007 by Apple Inc.
   7  *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
   8  *
   9  *   These coded instructions, statements, and computer programs are the
  10  *   property of Apple Inc. and are protected by Federal copyright
  11  *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12  *   which should have been included with this file.  If this file is
  13  *   file is missing or damaged, see the license at "http://www.cups.org/".
  14  *
  15  * Contents:
  16  *
  17  *   cupsdStartServer() - Start the server.
  18  *   cupsdStopServer()  - Stop the server.
  19  */
  20
  21 /*
  22  * Include necessary headers...
  23  */
  24
  25 #include <cups/http-private.h>
  26 #include "cupsd.h"
  27 #include <grp.h>
  28 #ifdef HAVE_NOTIFY_H
  29 #  include <notify.h>
  30 #endif /* HAVE_NOTIFY_H */
  31
  32
  33 /*
  34  * Local globals...
  35  */
  36
  37 static int      started = 0;
  38
  39
  40 /*
  41  * 'cupsdStartServer()' - Start the server.
  42  */
  43
  44 void
  45 cupsdStartServer(void)
  46 {
  47 #ifdef HAVE_LIBSSL
  48   int                   i;              /* Looping var */
  49   struct timeval        curtime;        /* Current time in microseconds */
  50   unsigned char         data[1024];     /* Seed data */
  51 #endif /* HAVE_LIBSSL */
  52
  53
  54 #ifdef HAVE_LIBSSL
  55  /*
  56   * Initialize the encryption libraries...
  57   */
  58
  59   SSL_library_init();
  60   SSL_load_error_strings();
  61
  62  /*
  63   * Using the current time is a dubious random seed, but on some systems
  64   * it is the best we can do (on others, this seed isn't even used...)
  65   */
  66
  67   gettimeofday(&curtime, NULL);
  68   srand(curtime.tv_sec + curtime.tv_usec);
  69
  70   for (i = 0; i < sizeof(data); i ++)
  71     data[i] = rand(); /* Yes, this is a poor source of random data... */
  72
  73   RAND_seed(&data, sizeof(data));
  74 #elif defined(HAVE_GNUTLS)
  75  /*
  76   * Initialize the encryption libraries...
  77   */
  78
  79   gnutls_global_init();
  80 #endif /* HAVE_LIBSSL */
  81
  82  /*
  83   * Create the default security profile...
  84   */
  85
  86   DefaultProfile = cupsdCreateProfile(0);
  87
  88  /*
  89   * Startup all the networking stuff...
  90   */
  91
  92   cupsdStartListening();
  93   cupsdStartBrowsing();
  94   cupsdStartPolling();
  95
  96  /*
  97   * Create a pipe for CGI processes...
  98   */
  99
 100   if (cupsdOpenPipe(CGIPipes))
 101     cupsdLogMessage(CUPSD_LOG_ERROR,
 102                     "cupsdStartServer: Unable to create pipes for CGI status!");
 103   else
 104   {
 105     CGIStatusBuffer = cupsdStatBufNew(CGIPipes[0], "[CGI]");
 106
 107     cupsdAddSelect(CGIPipes[0], (cupsd_selfunc_t)cupsdUpdateCGI, NULL, NULL);
 108   }
 109
 110  /*
 111   * Mark that the server has started and printers and jobs may be changed...
 112   */
 113
 114   LastEvent     = CUPSD_EVENT_PRINTER_CHANGED | CUPSD_EVENT_JOB_STATE_CHANGED |
 115                   CUPSD_EVENT_SERVER_STARTED;
 116
 117   started = 1;
 118 }
 119
 120
 121 /*
 122  * 'cupsdStopServer()' - Stop the server.
 123  */
 124
 125 void
 126 cupsdStopServer(void)
 127 {
 128   if (!started)
 129     return;
 130
 131  /*
 132   * Close all network clients and stop all jobs...
 133   */
 134
 135   cupsdCloseAllClients();
 136   cupsdStopListening();
 137   cupsdStopPolling();
 138   cupsdStopBrowsing();
 139   cupsdStopAllNotifiers();
 140   cupsdSaveRemoteCache();
 141   cupsdDeleteAllCerts();
 142
 143   if (Clients)
 144   {
 145     cupsArrayDelete(Clients);
 146     Clients = NULL;
 147   }
 148
 149  /*
 150   * Close the pipe for CGI processes...
 151   */
 152
 153   if (CGIPipes[0] >= 0)
 154   {
 155     cupsdRemoveSelect(CGIPipes[0]);
 156
 157     cupsdStatBufDelete(CGIStatusBuffer);
 158     close(CGIPipes[1]);
 159
 160     CGIPipes[0] = -1;
 161     CGIPipes[1] = -1;
 162   }
 163
 164 #ifdef HAVE_NOTIFY_POST
 165  /*
 166   * Send one last notification as the server shuts down.
 167   */
 168
 169   cupsdLogMessage(CUPSD_LOG_DEBUG,
 170                   "notify_post(\"com.apple.printerListChange\") last");
 171   notify_post("com.apple.printerListChange");
 172 #endif /* HAVE_NOTIFY_POST */
 173
 174  /*
 175   * Close all log files...
 176   */
 177
 178   if (AccessFile != NULL)
 179   {
 180     cupsFileClose(AccessFile);
 181
 182     AccessFile = NULL;
 183   }
 184
 185   if (ErrorFile != NULL)
 186   {
 187     cupsFileClose(ErrorFile);
 188
 189     ErrorFile = NULL;
 190   }
 191
 192   if (PageFile != NULL)
 193   {
 194     cupsFileClose(PageFile);
 195
 196     PageFile = NULL;
 197   }
 198
 199  /*
 200   * Delete the default security profile...
 201   */
 202
 203   cupsdDestroyProfile(DefaultProfile);
 204   DefaultProfile = NULL;
 205
 206   started = 0;
 207 }
 208
 209
 210 /*
 211  * End of "$Id: server.c 6649 2007-07-11 21:46:42Z mike $".
 212  */