src/libcaptive/sandbox/parent-Directory.c

   1 /* $Id$
   2  * CORBA/ORBit client side of Directory object of sandbox_parent()
   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 "parent-Directory.h"   /* self */
  23 #include <glib/gmessages.h>
  24 #include "split.h"
  25 #include "sandbox.h"
  26 #include "../client/directory.h"
  27 #include "../client/vfs.h"
  28 #include "FileInfo.h"
  29 #include "captive/macros.h"
  30 #include "../client/vfs-parent.h"
  31
  32
  33 GnomeVFSResult captive_sandbox_parent_directory_new_open
  34                 (CaptiveDirectoryParentObject *captive_directory_parent_object)
  35 {
  36 xmlNode *xml_action=NULL;
  37 CaptiveVfsParentObject *captive_vfs_parent_object;
  38 GnomeVFSResult r;
  39 Captive_Directory corba_Directory_object;
  40
  41         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
  42         g_return_val_if_fail(captive_directory_parent_object->pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
  43
  44         captive_vfs_parent_object=CAPTIVE_VFS_PARENT_OBJECT(CAPTIVE_DIRECTORY_OBJECT(captive_directory_parent_object)->vfs);
  45
  46         if (captive_vfs_parent_object->corba_bug_action) {
  47                 xml_action=xmlNewTextChild(captive_vfs_parent_object->corba_bug_action,NULL,"directory_new_open",NULL);
  48                 xmlNewProp(xml_action,"object",captive_printf_alloca("%p",captive_directory_parent_object));
  49                 xmlNewProp(xml_action,"pathname",captive_directory_parent_object->pathname);
  50                 }
  51
  52         corba_Directory_object=Captive_Vfs_directory_new_open(
  53                         captive_vfs_parent_object->corba_Vfs_object,captive_directory_parent_object->pathname,&captive_corba_ev);
  54         if (xml_action)
  55                 xmlNewProp(xml_action,"result",(captive_corba_ev._major==CORBA_NO_EXCEPTION ? "1" : "0"));
  56         /* If 'r' means failure 'corba_Directory_object' may not be 'CORBA_OBJECT_NIL'
  57          * although it is not valid 'CORBA_Object' to be passed to CORBA_Object_release().
  58          */
  59         if (GNOME_VFS_OK!=(r=captive_sandbox_parent_return_from_CORBA_Environment(&captive_corba_ev,captive_vfs_parent_object)))
  60                 return r;
  61
  62         captive_directory_parent_object->corba_Directory_object=corba_Directory_object;
  63         return GNOME_VFS_OK;
  64 }
  65
  66
  67 GnomeVFSResult captive_sandbox_parent_directory_new_make
  68                 (CaptiveDirectoryParentObject *captive_directory_parent_object,guint perm)
  69 {
  70 xmlNode *xml_action=NULL;
  71 CaptiveVfsParentObject *captive_vfs_parent_object;
  72 GnomeVFSResult r;
  73 Captive_Directory corba_Directory_object;
  74
  75         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
  76         g_return_val_if_fail(captive_directory_parent_object->pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
  77
  78         captive_vfs_parent_object=CAPTIVE_VFS_PARENT_OBJECT(CAPTIVE_DIRECTORY_OBJECT(captive_directory_parent_object)->vfs);
  79
  80         if (captive_vfs_parent_object->corba_bug_action) {
  81                 xml_action=xmlNewTextChild(captive_vfs_parent_object->corba_bug_action,NULL,"directory_new_make",NULL);
  82                 xmlNewProp(xml_action,"object",captive_printf_alloca("%p",captive_directory_parent_object));
  83                 xmlNewProp(xml_action,"pathname",captive_directory_parent_object->pathname);
  84                 xmlNewProp(xml_action,"perm",captive_printf_alloca("%u",(unsigned)perm));
  85                 }
  86
  87         corba_Directory_object=Captive_Vfs_directory_new_make(
  88                         captive_vfs_parent_object->corba_Vfs_object,captive_directory_parent_object->pathname,perm,&captive_corba_ev);
  89         if (xml_action)
  90                 xmlNewProp(xml_action,"result",(captive_corba_ev._major==CORBA_NO_EXCEPTION ? "1" : "0"));
  91         /* If 'r' means failure 'corba_Directory_object' may not be 'CORBA_OBJECT_NIL'
  92          * although it is not valid 'CORBA_Object' to be passed to CORBA_Object_release().
  93          */
  94         if (GNOME_VFS_OK!=(r=captive_sandbox_parent_return_from_CORBA_Environment(&captive_corba_ev,captive_vfs_parent_object)))
  95                 return r;
  96
  97         captive_directory_parent_object->corba_Directory_object=corba_Directory_object;
  98         return GNOME_VFS_OK;
  99 }
 100
 101
 102 GnomeVFSResult captive_sandbox_parent_directory_close(CaptiveDirectoryParentObject *captive_directory_parent_object)
 103 {
 104 GnomeVFSResult r;
 105 xmlNode *xml_action=NULL;
 106 CaptiveVfsParentObject *captive_vfs_parent_object;
 107
 108         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 109
 110         captive_vfs_parent_object=CAPTIVE_VFS_PARENT_OBJECT(CAPTIVE_DIRECTORY_OBJECT(captive_directory_parent_object)->vfs);
 111
 112         if (captive_vfs_parent_object->corba_bug_action) {
 113                 xml_action=xmlNewTextChild(captive_vfs_parent_object->corba_bug_action,NULL,"directory_close",NULL);
 114                 xmlNewProp(xml_action,"object",captive_printf_alloca("%p",captive_directory_parent_object));
 115                 }
 116
 117         Captive_Directory_shutdown(captive_directory_parent_object->corba_Directory_object,&captive_corba_ev);
 118         r=captive_sandbox_parent_return_from_CORBA_Environment(&captive_corba_ev,captive_vfs_parent_object);
 119         if (xml_action)
 120                 xmlNewProp(xml_action,"result",gnome_vfs_result_to_string(r));
 121
 122         /* Always clear 'corba_Directory_object' even if 'r' means failure. */
 123         CORBA_Object_release((CORBA_Object)captive_directory_parent_object->corba_Directory_object,&captive_corba_ev);
 124         captive_directory_parent_object->corba_Directory_object=CORBA_OBJECT_NIL;
 125
 126         if (captive_directory_parent_object->corba_Directory_file_info_list) {
 127 GList *file_info_last_l=g_list_last(captive_directory_parent_object->corba_Directory_file_info_list);
 128
 129                 /* Prevent gnome_vfs_file_info_list_free() and its gnome_vfs_file_info_unref()
 130                  * on the last 'file_info_list' items as it is EOF with NULL '->data'.
 131                  */
 132                 g_assert(file_info_last_l->data==NULL); /* directory EOF */
 133                 captive_directory_parent_object->corba_Directory_file_info_list=g_list_delete_link(
 134                                 captive_directory_parent_object->corba_Directory_file_info_list,file_info_last_l);
 135                 gnome_vfs_file_info_list_free(captive_directory_parent_object->corba_Directory_file_info_list);
 136                 captive_directory_parent_object->corba_Directory_file_info_list=NULL;
 137                 }
 138
 139         return r;
 140 }
 141
 142 static GnomeVFSResult captive_sandbox_parent_directory_read_fill1
 143                 (CaptiveDirectoryParentObject *captive_directory_parent_object,GnomeVFSFileInfo *file_info_captive)
 144 {
 145 xmlNode *xml_action=NULL;
 146 Captive_GnomeVFSFileInfo *file_info_corba;
 147 GnomeVFSResult r;
 148 CaptiveVfsParentObject *captive_vfs_parent_object;
 149
 150         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 151         g_return_val_if_fail(file_info_captive!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 152
 153         captive_vfs_parent_object=CAPTIVE_VFS_PARENT_OBJECT(CAPTIVE_DIRECTORY_OBJECT(captive_directory_parent_object)->vfs);
 154
 155         if (captive_vfs_parent_object->corba_bug_action) {
 156                 xml_action=xmlNewTextChild(captive_vfs_parent_object->corba_bug_action,NULL,"directory_read",NULL);
 157                 xmlNewProp(xml_action,"object",captive_printf_alloca("%p",captive_directory_parent_object));
 158                 }
 159
 160         Captive_Directory_read(captive_directory_parent_object->corba_Directory_object,&file_info_corba,&captive_corba_ev);
 161         r=captive_sandbox_parent_return_from_CORBA_Environment(&captive_corba_ev,captive_vfs_parent_object);
 162         if (xml_action)
 163                 xmlNewProp(xml_action,"result",gnome_vfs_result_to_string(r));
 164         if (r!=GNOME_VFS_OK)
 165                 return r;
 166
 167         r=captive_sandbox_file_info_corba_to_captive(file_info_captive,file_info_corba);
 168         if (xml_action)
 169                 xmlSetProp(xml_action,"result",gnome_vfs_result_to_string(r));
 170         if (r!=GNOME_VFS_OK)
 171                 return r;       /* 'file_info_corba' leak */
 172
 173         Captive_GnomeVFSFileInfo__freekids(file_info_corba,NULL/* 'd'; meaning? */);
 174         CORBA_free(file_info_corba);
 175
 176         return GNOME_VFS_OK;
 177 }
 178
 179 static GnomeVFSResult captive_sandbox_parent_directory_read_filldir(CaptiveDirectoryParentObject *captive_directory_parent_object)
 180 {
 181 GnomeVFSFileInfo *file_info_captive;
 182 GnomeVFSResult r;
 183
 184         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 185         g_return_val_if_fail(captive_directory_parent_object->corba_Directory_file_info_list==NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 186
 187         for (;;) {
 188                 file_info_captive=gnome_vfs_file_info_new();
 189                 r=captive_sandbox_parent_directory_read_fill1(captive_directory_parent_object,file_info_captive);
 190                 if (r==GNOME_VFS_ERROR_EOF) {
 191                         gnome_vfs_file_info_unref(file_info_captive);
 192                         break;
 193                         }
 194                 if (r!=GNOME_VFS_OK) {
 195                         gnome_vfs_file_info_unref(file_info_captive);
 196                         gnome_vfs_file_info_list_free(captive_directory_parent_object->corba_Directory_file_info_list);
 197                         captive_directory_parent_object->corba_Directory_file_info_list=NULL;
 198                         return r;
 199                         }
 200                 captive_directory_parent_object->corba_Directory_file_info_list=g_list_prepend(
 201                                 captive_directory_parent_object->corba_Directory_file_info_list,file_info_captive);
 202                 }
 203
 204         captive_directory_parent_object->corba_Directory_file_info_list=g_list_prepend(
 205                         captive_directory_parent_object->corba_Directory_file_info_list,NULL);  /* EOF */
 206         captive_directory_parent_object->corba_Directory_file_info_list=g_list_reverse(
 207                         captive_directory_parent_object->corba_Directory_file_info_list);
 208
 209         return GNOME_VFS_OK;
 210 }
 211
 212 /* We have to read the whole directory atomically
 213  * as during valid child restart we would loose our reading position.
 214  */
 215 GnomeVFSResult captive_sandbox_parent_directory_read
 216                 (CaptiveDirectoryParentObject *captive_directory_parent_object,GnomeVFSFileInfo *file_info_captive)
 217 {
 218 GnomeVFSResult r;
 219
 220         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 221         g_return_val_if_fail(file_info_captive!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
 222
 223         if (!captive_directory_parent_object->corba_Directory_file_info_list)
 224                 if (GNOME_VFS_OK!=(r=captive_sandbox_parent_directory_read_filldir(captive_directory_parent_object)))
 225                         return r;
 226
 227         if (!captive_directory_parent_object->corba_Directory_file_info_list->data) {
 228                 g_assert(captive_directory_parent_object->corba_Directory_file_info_list->next==NULL);
 229                 /* Do not clear the list to leave us stuck at EOF - GnomeVFS behaves that way. */
 230                 r=GNOME_VFS_ERROR_EOF;
 231                 }
 232         else {
 233                 /* Cut first list item. */
 234                 gnome_vfs_file_info_copy(
 235                                 file_info_captive,  /* dest */
 236                                 captive_directory_parent_object->corba_Directory_file_info_list->data); /* src */
 237                 gnome_vfs_file_info_unref(captive_directory_parent_object->corba_Directory_file_info_list->data);
 238                 captive_directory_parent_object->corba_Directory_file_info_list=g_list_delete_link(
 239                                 captive_directory_parent_object->corba_Directory_file_info_list,
 240                                 captive_directory_parent_object->corba_Directory_file_info_list);
 241                 r=GNOME_VFS_OK;
 242                 }
 243
 244         return r;
 245 }
 246
 247
 248 GnomeVFSResult captive_sandbox_parent_directory_remove(CaptiveDirectoryParentObject *captive_directory_parent_object)
 249 {
 250 GnomeVFSResult r;
 251 xmlNode *xml_action=NULL;
 252 CaptiveVfsParentObject *captive_vfs_parent_object;
 253
 254         g_return_val_if_fail(CAPTIVE_DIRECTORY_PARENT_IS_OBJECT(captive_directory_parent_object),GNOME_VFS_ERROR_BAD_PARAMETERS);
 255
 256         captive_vfs_parent_object=CAPTIVE_VFS_PARENT_OBJECT(CAPTIVE_DIRECTORY_OBJECT(captive_directory_parent_object)->vfs);
 257
 258         if (captive_vfs_parent_object->corba_bug_action) {
 259                 xml_action=xmlNewTextChild(captive_vfs_parent_object->corba_bug_action,NULL,"directory_remove",NULL);
 260                 xmlNewProp(xml_action,"object",captive_printf_alloca("%p",captive_directory_parent_object));
 261                 }
 262
 263         Captive_Directory_remove(captive_directory_parent_object->corba_Directory_object,&captive_corba_ev);
 264         r=captive_sandbox_parent_return_from_CORBA_Environment(&captive_corba_ev,captive_vfs_parent_object);
 265         if (xml_action)
 266                 xmlNewProp(xml_action,"result",gnome_vfs_result_to_string(r));
 267         if (r!=GNOME_VFS_OK)
 268                 return r;
 269
 270         return GNOME_VFS_OK;
 271 }