src/install/acquire/moduriload.c

   1 /* $Id$
   2  * W32 disk modules finder for acquiration installation utility
   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 "moduriload.h" /* self */
  23 #include <glib/gmessages.h>
  24 #include <mntent.h>
  25 #include <glib/ghash.h>
  26 #include <glib/glist.h>
  27 #include <libgnomevfs/gnome-vfs-uri.h>
  28 #include "../libcaptive-install/proc_partitions.h"
  29 #include "main.h"
  30 #include <string.h>
  31 #include "captivemodid.h"
  32 #include "cabinet.h"
  33 #include <libgnomevfs/gnome-vfs-ops.h>
  34 #include <libgnomevfs/gnome-vfs-directory.h>
  35 #include <fcntl.h>
  36 #include <unistd.h>
  37
  38 #include <captive/macros.h>
  39
  40
  41 /* Config: */
  42 #define MAX_FILE_LOAD_LENGTH 5000000    /* Otherwise use cabextract-over-http. */
  43
  44
  45 /* map: (const xmlChar *)type -> (struct module_available *) */
  46 GHashTable *module_available_hash;
  47
  48 static void module_available_hash_value_destroy_func(struct module_available *module_available)
  49 {
  50         g_return_if_fail(module_available!=NULL);
  51
  52         g_free(module_available->file_base);
  53         g_free(module_available->uri_text);
  54         g_free(module_available);
  55 }
  56
  57 static void module_available_hash_init(void)
  58 {
  59         if (module_available_hash)
  60                 return;
  61         module_available_hash=g_hash_table_new_full(g_str_hash,g_str_equal,
  62                         (GDestroyNotify)NULL,
  63                         (GDestroyNotify)module_available_hash_value_destroy_func);
  64 }
  65
  66
  67 void (*acquire_module_available_notify)(struct module_available *module_available);
  68 void (*acquire_module_all_modules_found_notify)(void);
  69
  70 static void mod_uri_load_module_from_memory
  71                 (struct captivemodid_module *module,gconstpointer file_base,size_t file_length,GnomeVFSURI *uri)
  72 {
  73 struct module_available *module_available;
  74 gint best_priority;
  75 gboolean all_modules_found;
  76
  77         g_return_if_fail(module!=NULL);
  78         g_return_if_fail(file_base!=NULL);
  79         g_return_if_fail(uri!=NULL);
  80         g_return_if_fail((size_t)module->length==file_length);
  81
  82         module_available_hash_init();
  83         if ((module_available=g_hash_table_lookup(module_available_hash,module->type))) {
  84                 if (module_available->module->priority>=module->priority)
  85                         return;
  86                 }
  87
  88         captive_new(module_available);
  89         module_available->module=module;
  90         module_available->file_base=g_memdup(file_base,file_length);
  91         module_available->uri_text=gnome_vfs_uri_to_string(uri,GNOME_VFS_URI_HIDE_PASSWORD);
  92         /* It may possibly destroy the old 'module_available': */
  93         g_hash_table_insert(module_available_hash,(/* de-const */ xmlChar *)module->type,module_available);
  94
  95         if (!optarg_dry) {
  96 const gchar *dest_pathname;
  97 int dest_fd;
  98
  99                 dest_pathname=captive_printf_alloca("%s/%s",G_STRINGIFY(VARLIBCAPTIVEDIR),module->type);
 100                 if (-1==(dest_fd=open(dest_pathname,O_CREAT|O_TRUNC|O_WRONLY,0644)))
 101                         g_warning(_("Cannot open target file \"%s\": %m"),dest_pathname);
 102                 else {
 103                         if ((ssize_t)file_length!=write(dest_fd,file_base,file_length))
 104                                 g_warning(_("Error writing target file \"%s\": %m"),dest_pathname);
 105                         if (close(dest_fd))
 106                                 g_warning(_("Error closing target file \"%s\": %m"),dest_pathname);
 107                         }
 108                 }
 109
 110         all_modules_found=FALSE;
 111
 112         best_priority=captivemodid_module_type_best_priority_lookup(module->type);
 113         if (best_priority==G_MININT     /* no longer seeking for such module */
 114                         || module_available->module->priority==best_priority) {
 115                 if (captivemodid_module_type_best_priority_found(module->type)) {
 116                         /* Postpone (*acquire_module_all_modules_found_notify)()
 117                          * after (*acquire_module_available_notify)().
 118                          */
 119                         all_modules_found=TRUE;
 120                         }
 121                 }
 122
 123         if (acquire_module_available_notify)
 124                 (*acquire_module_available_notify)(module_available);
 125         if (all_modules_found)
 126                 if (acquire_module_all_modules_found_notify)
 127                         (*acquire_module_all_modules_found_notify)();
 128 }
 129
 130 void mod_uri_load_file_from_memory(gconstpointer file_base,size_t file_length,GnomeVFSURI *uri)
 131 {
 132 gchar *file_md5;
 133 struct captivemodid_module *module;
 134
 135         g_return_if_fail(file_base!=NULL);
 136         g_return_if_fail(uri!=NULL);
 137
 138         if ((*ui_progress)(uri))
 139                 return;
 140
 141         file_md5=calc_md5(file_base,file_length);
 142         if (!(module=captivemodid_module_md5_lookup(file_md5)))
 143                 goto fail_free_file_md5;
 144
 145         if (strcmp("cabinet",module->type))
 146                 mod_uri_load_module_from_memory(module,file_base,file_length,uri);
 147         else {
 148                 struct acquire_cabinet *acquire_cabinet;
 149                 /* acquire_cabinet_load() will call mod_uri_load_module_from_memory(): */
 150                 acquire_cabinet=acquire_cabinet_new_from_memory(file_base,file_length,uri);
 151                 acquire_cabinet_load(acquire_cabinet);
 152                 acquire_cabinet_free(acquire_cabinet);
 153                 }
 154
 155 fail_free_file_md5:
 156         g_free(file_md5);
 157 }
 158
 159 static void mod_uri_load_file_handle_to_memory(GnomeVFSHandle *handle,GnomeVFSFileInfo *file_info,GnomeVFSURI *uri)
 160 {
 161 guint8 *file_buffer,file_tail_check;
 162 GnomeVFSFileSize bytes_read;
 163 GnomeVFSResult errvfsresult;
 164
 165         g_return_if_fail(handle!=NULL);
 166         g_return_if_fail(file_info!=NULL);
 167         g_return_if_fail(uri!=NULL);
 168
 169         /* gnome_vfs_read_entire_file() reads the file by chunks although
 170          * it does not need to know the file size.
 171          */
 172         file_buffer=g_malloc(file_info->size);
 173
 174         errvfsresult=gnome_vfs_read(handle,file_buffer,file_info->size,&bytes_read);
 175         if (errvfsresult!=GNOME_VFS_OK || bytes_read!=file_info->size)
 176                 goto fail_free_file_buffer;
 177         errvfsresult=gnome_vfs_read(handle,&file_tail_check,1,NULL);
 178         if (errvfsresult!=GNOME_VFS_ERROR_EOF)
 179                 goto fail_free_file_buffer;
 180         mod_uri_load_file_from_memory(file_buffer,file_info->size,uri);
 181
 182 fail_free_file_buffer:
 183         g_free(file_buffer);
 184 }
 185
 186 static void mod_uri_load_file_handle_remote_cabinet(GnomeVFSHandle *handle,GnomeVFSFileInfo *file_info,GnomeVFSURI *uri)
 187 {
 188 struct acquire_cabinet *acquire_cabinet;
 189
 190         g_return_if_fail(handle!=NULL);
 191         g_return_if_fail(file_info!=NULL);
 192         g_return_if_fail(uri!=NULL);
 193
 194         acquire_cabinet=acquire_cabinet_new_from_handle(handle,file_info,uri);
 195         /* acquire_cabinet_load() will call mod_uri_load_module_from_memory(): */
 196         acquire_cabinet_load(acquire_cabinet);
 197         acquire_cabinet_free(acquire_cabinet);
 198 }
 199
 200 static void mod_uri_load_file(GnomeVFSURI *uri)
 201 {
 202 GnomeVFSResult errvfsresult;
 203 GnomeVFSFileInfo file_info_local;
 204 GnomeVFSHandle *handle;
 205
 206         g_return_if_fail(uri!=NULL);
 207
 208         if (GNOME_VFS_OK!=(errvfsresult=gnome_vfs_open_uri(&handle,uri,GNOME_VFS_OPEN_READ)))
 209                 goto fail;
 210         if (GNOME_VFS_OK!=(errvfsresult=gnome_vfs_get_file_info_from_handle(handle,&file_info_local,GNOME_VFS_FILE_INFO_DEFAULT)))
 211                 goto fail_close_handle;
 212         if (file_info_local.type!=GNOME_VFS_FILE_TYPE_REGULAR) {
 213                 errvfsresult=GNOME_VFS_ERROR_WRONG_FORMAT;
 214                 goto fail_close_handle;
 215                 }
 216         if (!(file_info_local.valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE)) {
 217                 errvfsresult=GNOME_VFS_ERROR_WRONG_FORMAT;
 218                 goto fail_close_handle;
 219                 }
 220         if (!captivemodid_module_length_is_valid(file_info_local.size)) {
 221                 errvfsresult=GNOME_VFS_ERROR_WRONG_FORMAT;
 222                 goto fail_close_handle;
 223                 }
 224         if (file_info_local.size<=MAX_FILE_LOAD_LENGTH)
 225                 mod_uri_load_file_handle_to_memory(handle,&file_info_local,uri);
 226         else
 227                 mod_uri_load_file_handle_remote_cabinet(handle,&file_info_local,uri);
 228         errvfsresult=GNOME_VFS_OK;
 229         /* PASSTHRU */
 230 fail_close_handle:
 231         gnome_vfs_close(handle);
 232 fail:;
 233 }
 234
 235 static gboolean mod_uri_load_directory_visit_func
 236                 (const gchar *rel_path,GnomeVFSFileInfo *info,gboolean recursing_will_loop,GnomeVFSURI *root_uri /* data */,
 237                 gboolean *recurse)
 238 {
 239         g_return_val_if_fail(rel_path!=NULL,FALSE);
 240         g_return_val_if_fail(info!=NULL,FALSE);
 241         g_return_val_if_fail(root_uri!=NULL,FALSE);
 242         g_return_val_if_fail(recurse!=NULL,FALSE);
 243
 244         *recurse=FALSE;
 245
 246         /* Do not: (*ui_progress)(root_uri);
 247          * here as we are called with the same 'root_uri' for all of our 'rel_path's.
 248          */
 249         (*ui_progress)(NULL);
 250
 251         switch (info->type) {
 252                 case GNOME_VFS_FILE_TYPE_REGULAR: {
 253 GnomeVFSURI *file_uri;
 254
 255                         file_uri=gnome_vfs_uri_append_path(root_uri,rel_path);
 256                         if ((*ui_progress)(file_uri)) {
 257                                 gnome_vfs_uri_unref(file_uri);
 258                                 return FALSE;   /* abort traversal */
 259                                 }
 260                         mod_uri_load_file(file_uri);
 261                         gnome_vfs_uri_unref(file_uri);
 262                         } break;
 263                 case GNOME_VFS_FILE_TYPE_DIRECTORY: {
 264 GnomeVFSURI *directory_uri;
 265 GnomeVFSDirectoryHandle *directory_handle;
 266
 267                         /* Never set '*recurse' if it would cause 'Access denied' error
 268                          * as it would completely abort the upper gnome_vfs_directory_visit_uri().
 269                          * Check the directory accessibility manually:
 270                          */
 271                         directory_uri=gnome_vfs_uri_append_path(root_uri,rel_path);
 272                         if ((*ui_progress)(directory_uri)) {
 273                                 gnome_vfs_uri_unref(directory_uri);
 274                                 return FALSE;   /* abort traversal */
 275                                 }
 276                         if (GNOME_VFS_OK==gnome_vfs_directory_open_from_uri(&directory_handle,directory_uri,GNOME_VFS_FILE_INFO_DEFAULT)) {
 277                                 *recurse=TRUE;
 278                                 gnome_vfs_directory_close(directory_handle);    /* errors ignored */
 279                                 }
 280                         gnome_vfs_uri_unref(directory_uri);
 281                         } break;
 282                 default:;
 283                 }
 284
 285         return TRUE;    /* continue traversal */
 286 }
 287
 288 static void mod_uri_load_directory(GnomeVFSURI *uri)
 289 {
 290 GnomeVFSResult errvfsresult;
 291
 292         g_return_if_fail(uri!=NULL);
 293
 294         errvfsresult=gnome_vfs_directory_visit_uri(uri,
 295                         GNOME_VFS_FILE_INFO_DEFAULT,    /* info_options */
 296                         GNOME_VFS_DIRECTORY_VISIT_SAMEFS,       /* visit_options; 'GNOME_VFS_DIRECTORY_VISIT_LOOPCHECK'? */
 297                         (GnomeVFSDirectoryVisitFunc)mod_uri_load_directory_visit_func,
 298                         uri);   /* data */
 299         if (errvfsresult!=GNOME_VFS_OK) {
 300 gchar *uri_text;
 301
 302                 uri_text=gnome_vfs_uri_to_string(uri,GNOME_VFS_URI_HIDE_PASSWORD);
 303                 g_warning(_("Error scanning sub-tree of \"%s\": %s"),uri_text,gnome_vfs_result_to_string(errvfsresult));
 304                 g_free(uri_text);
 305                 }
 306 }
 307
 308 void mod_uri_load(GnomeVFSURI *uri)
 309 {
 310 GnomeVFSFileInfo file_info_local;
 311 GnomeVFSResult errvfsresult;
 312
 313         g_return_if_fail(uri!=NULL);
 314
 315         if (optarg_verbose) {
 316 gchar *uri_text;
 317
 318                 uri_text=gnome_vfs_uri_to_string(uri,GNOME_VFS_URI_HIDE_PASSWORD);
 319                 g_message(_("Scanning...: %s"),uri_text);
 320                 g_free(uri_text);
 321                 }
 322
 323         file_info_local.type=GNOME_VFS_FILE_TYPE_UNKNOWN;
 324         if (GNOME_VFS_OK!=(errvfsresult=gnome_vfs_get_file_info_uri(uri,&file_info_local,GNOME_VFS_FILE_INFO_DEFAULT)))
 325                 return /* errvfsresult */;
 326         switch (file_info_local.type) {
 327                 case GNOME_VFS_FILE_TYPE_REGULAR:   return mod_uri_load_file(uri);
 328                 case GNOME_VFS_FILE_TYPE_DIRECTORY: return mod_uri_load_directory(uri);
 329                 default:                            return /* GNOME_VFS_ERROR_WRONG_FORMAT */;
 330                 }
 331         /* NOTREACHED */
 332 }