src/libcaptive/client/options-module.c

   1 /* $Id$
   2  * User options handling code of libcaptive
   3  * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include "captive/options.h"    /* self */
  23 #include <glib/gmessages.h>
  24 #include "captive/macros.h"
  25 #include <glib/gstrfuncs.h>
  26 #include <stdlib.h>
  27 #include "captive/rtl-file.h"
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <fcntl.h>
  31 #include <sys/mman.h>
  32
  33
  34 gboolean captive_options_module_load(struct captive_options_module *options_module,const gchar *pathname_utf8)
  35 {
  36         g_return_val_if_fail(options_module!=NULL,FALSE);
  37         g_return_val_if_fail(pathname_utf8!=NULL,FALSE);
  38
  39         /* Open the Module */
  40         options_module->type=CAPTIVE_OPTIONS_MODULE_TYPE_PE32;
  41         options_module->pathname_utf8=g_strdup(pathname_utf8);
  42         options_module->u.pe32.mapped=TRUE;
  43         options_module->u.pe32.base=captive_rtl_file_mmap(
  44                         &options_module->u.pe32.length, /* lenp */
  45                         pathname_utf8,  /* path */
  46                         O_RDONLY,       /* open_flags */
  47                         PROT_READ,      /* mmap_prot */
  48                         MAP_SHARED);    /* mmap_flags */
  49         /* FIXME: convert errno instead of STATUS_INSUFFICIENT_RESOURCES */
  50         g_return_val_if_fail(options_module->u.pe32.base!=NULL,FALSE);
  51
  52         if (options_module->u.pe32.length>=2
  53                         && (('M'<<8U)|('Z'<<0U))==GUINT16_FROM_BE(*(const guint16 *)options_module->u.pe32.base)) {
  54                 /* already done above */
  55                 }
  56         else {
  57                 captive_rtl_file_munmap(options_module->u.pe32.base);
  58                 options_module->type=CAPTIVE_OPTIONS_MODULE_TYPE_GMODULE;
  59                 options_module->u.gmodule.pathname=g_strdup(pathname_utf8);
  60                 }
  61
  62         return TRUE;
  63 }
  64
  65
  66 void captive_options_module_copy(struct captive_options_module *dest,const struct captive_options_module *src)
  67 {
  68         g_return_if_fail(dest!=NULL);
  69         g_return_if_fail(src!=NULL);
  70
  71         dest->pathname_utf8=g_strdup(src->pathname_utf8);
  72
  73         dest->type=src->type;
  74         switch (src->type) {
  75                 case CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY: g_assert_not_reached();
  76
  77                 case CAPTIVE_OPTIONS_MODULE_TYPE_PE32:
  78                         dest->u.pe32.base=g_memdup(src->u.pe32.base,src->u.pe32.length);
  79                         dest->u.pe32.length=src->u.pe32.length;
  80                         dest->u.pe32.mapped=FALSE;
  81                         break;
  82
  83                 case CAPTIVE_OPTIONS_MODULE_TYPE_GMODULE:
  84                         dest->u.gmodule.pathname=g_strdup(src->u.gmodule.pathname);
  85                         break;
  86
  87                 default: g_assert_not_reached();
  88                 }
  89 }
  90
  91
  92 void captive_options_module_free(struct captive_options_module *options_module)
  93 {
  94         g_return_if_fail(options_module!=NULL);
  95
  96         g_free(options_module->pathname_utf8);
  97
  98         switch (options_module->type) {
  99                 case CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY:
 100                         break;
 101
 102                 case CAPTIVE_OPTIONS_MODULE_TYPE_PE32:
 103                         if (options_module->u.pe32.mapped)
 104                                 captive_rtl_file_munmap(options_module->u.pe32.base);
 105                         else
 106                                 g_free(options_module->u.pe32.base);
 107                         break;
 108
 109                 case CAPTIVE_OPTIONS_MODULE_TYPE_GMODULE:
 110                         g_free(options_module->u.gmodule.pathname);
 111                         break;
 112
 113                 default: g_assert_not_reached();
 114                 }
 115 }