cde/programs/dtpdmd/dispatch.c

   1 /*
   2  * CDE - Common Desktop Environment
   3  *
   4  * Copyright (c) 1993-2012, The Open Group. All rights reserved.
   5  *
   6  * These libraries and programs are free software; you can
   7  * redistribute them and/or modify them under the terms of the GNU
   8  * Lesser General Public License as published by the Free Software
   9  * Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * These libraries and programs are distributed in the hope that
  13  * they will be useful, but WITHOUT ANY WARRANTY; without even the
  14  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE. See the GNU Lesser General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with these librararies and programs; if not, write
  20  * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  21  * Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 /******************************************************************************
  25  ******************************************************************************
  26  **
  27  ** File:         dispatch.c
  28  ** RCS:          $XConsortium: dispatch.c /main/4 1996/05/28 13:33:53 cde-hp $
  29  **
  30  ** Description:
  31  **
  32  ** (c) Copyright 1995, Hewlett-Packard Company, all rights reserved.
  33  **
  34  ******************************************************************************
  35  *****************************************************************************/
  36
  37 #define DISPATCH_DOT_C
  38
  39 #include "dtpdmdP.h"
  40
  41
  42 /******************************************************************************
  43  *
  44  * Dispatch PDM_MANAGER requests
  45  *
  46  * note: 'rec->pdm_exec_errorcode' is set to 0 (zero) and
  47  *       stays that way as long as no errors occur.
  48  *       Ultimately it gets set to either and error or
  49  *       success code.
  50  */
  51 void dispatch_mgr( XEvent *report )
  52 {
  53     XpPdmServiceRec *rec;
  54
  55
  56     /*
  57      * Locate or create a client record for this request.
  58      */
  59     rec = find_rec( report->xselectionrequest.requestor );
  60
  61     /*
  62      * Setup the client record per the request.
  63      */
  64     mgr_initialize( report, rec );
  65
  66     if ( rec->pdm_exec_errorcode ) {
  67         /*
  68          * Reply to requestor, but with bad news that
  69          * basic initialization in prep to launch a
  70          * pdm could not be completed.
  71          */
  72         mgr_launch_reply( rec );
  73
  74         delete_rec( rec );
  75         return;
  76     }
  77
  78     /*
  79      * Locate the pdm to be launched.
  80      */
  81     mgr_fetch_pdm( rec );
  82
  83     if ( rec->pdm_exec_errorcode ) {
  84         /*
  85          * Reply to requestor, but with bad news that
  86          * selection of a pdm to launch could not be
  87          * completed.
  88          */
  89         mgr_launch_reply( rec );
  90
  91         delete_rec( rec );
  92         return;
  93     }
  94
  95     /*
  96      * Launch the pdm.
  97      */
  98     mgr_launch_pdm( rec );
  99
 100     if ( rec->pdm_exec_errorcode ) {
 101         /*
 102          * Reply to requestor, but with bad news that
 103          * the pdm could not be launched.
 104          */
 105         mgr_launch_reply( rec );
 106
 107         delete_rec( rec );
 108         return;
 109     }
 110
 111     /*
 112      * Set state flags indicating a pdm has been started, but
 113      * defer the calling of 'mgr_launch_reply' until after the
 114      * pdm itself tells us it is up and running.
 115      *
 116      * The pdm can generate stderr which we will trap, and can
 117      * generate a SIGCLD which we will also trap and take
 118      * significant on.
 119      */
 120     rec->pdm_exec_errorcode = g.pdm_start_ok;
 121     rec->do_launch_reply = True;
 122     /* sometime later someone else calls mgr_launch_reply( rec ) */
 123
 124     return;
 125 }
 126
 127 /******************************************************************************
 128  *
 129  * Dispatch MBOX and MAIL requests
 130  */
 131 void dispatch_mbox( XEvent *report )
 132 {
 133     XpPdmServiceRec *rec;
 134
 135
 136     if (report->type == SelectionRequest) {
 137         /*
 138          * Locate or create a client record for this request.
 139          */
 140         rec = find_rec( report->xselectionrequest.requestor );
 141
 142         mbox_initialize( report, rec );
 143
 144         mbox_build( rec );
 145
 146         mbox_reply( rec );
 147     }
 148     else /* if (report->type == ClientMessage) */ {
 149         /*
 150          * Locate (do not create) a client record for this request.
 151          */
 152         rec = find_rec_by_mbox_win( report->xclient.window );
 153
 154         mbox_receive( rec, report );
 155     }
 156
 157     return;
 158 }
 159
 160 /******************************************************************************
 161  *
 162  * Dispatch TARGETS requests
 163  */
 164 void dispatch_targets( XEvent *report )
 165 {
 166     Atom   *target_list;
 167     int    target_count;
 168     XEvent reply;
 169     Status status;
 170
 171
 172     target_count = 4;
 173
 174     target_list = (Atom *) Xmalloc( sizeof(Atom) * target_count );
 175
 176     target_list[0] = g.pdm_targets;
 177     target_list[1] = g.pdm_start;
 178     target_list[2] = g.pdm_timestamp;
 179     target_list[3] = g.pdm_mbox;
 180
 181     /* target_list[4] = g.pdm_multiple; */
 182
 183     XChangeProperty( report->xselectionrequest.display,
 184                      report->xselectionrequest.requestor,
 185                      report->xselectionrequest.property,
 186                      XA_ATOM,
 187                      32,
 188                      PropModeReplace,
 189                      (unsigned char *) target_list,
 190                      target_count );
 191
 192     reply.xselection.type      = SelectionNotify;
 193     reply.xselection.requestor = report->xselectionrequest.requestor;
 194     reply.xselection.selection = report->xselectionrequest.selection;
 195     reply.xselection.target    = report->xselectionrequest.target;
 196     reply.xselection.property  = report->xselectionrequest.property;
 197     reply.xselection.time      = report->xselectionrequest.time;
 198
 199     status = XSendEvent( report->xselectionrequest.display,
 200                          report->xselectionrequest.requestor,
 201                          True, 0, &reply );
 202 }
 203
 204
 205 /******************************************************************************
 206  *
 207  * Dispatch MULTIPLE requests
 208  */
 209 void dispatch_multiple( XEvent *report )
 210 {
 211 }
 212
 213
 214 /******************************************************************************
 215  *
 216  * Dispatch TIMESTAMP requests
 217  */
 218 void dispatch_timestamp( XEvent *report )
 219 {
 220     XEvent reply;
 221     Status status;
 222
 223
 224     XChangeProperty( report->xselectionrequest.display,
 225                      report->xselectionrequest.requestor,
 226                      report->xselectionrequest.property,
 227                      XA_INTEGER,
 228                      32,
 229                      PropModeReplace,
 230                      (unsigned char *) &g.time,
 231                      1 );
 232
 233     reply.xselection.type      = SelectionNotify;
 234     reply.xselection.requestor = report->xselectionrequest.requestor;
 235     reply.xselection.selection = report->xselectionrequest.selection;
 236     reply.xselection.target    = report->xselectionrequest.target;
 237     reply.xselection.property  = report->xselectionrequest.property;
 238     reply.xselection.time      = report->xselectionrequest.time;
 239
 240     status = XSendEvent( report->xselectionrequest.display,
 241                          report->xselectionrequest.requestor,
 242                          True, 0, &reply );
 243 }
 244
 245 /******************************************************************************
 246  *
 247  * Dispatch unsupported selection requests
 248  */
 249 void dispatch_not_supported( XEvent *report )
 250 {
 251     XEvent reply;
 252     Status status;
 253
 254     reply.xselection.type      = SelectionNotify;
 255     reply.xselection.requestor = report->xselectionrequest.requestor;
 256     reply.xselection.selection = report->xselectionrequest.selection;
 257     reply.xselection.target    = report->xselectionrequest.target;
 258     reply.xselection.property  = None;
 259     reply.xselection.time      = report->xselectionrequest.time;
 260
 261     status = XSendEvent( report->xselectionrequest.display,
 262                          report->xselectionrequest.requestor,
 263                          True, 0, &reply );
 264 }
 265