+++ /dev/null
-/* $Id$
- * W32 disk modules identifier for acquiration installation utility
- * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; exactly version 2 of June 1991 is required
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "config.h"
-
-#include "captivemodid.h" /* self */
-#include <glib/gmessages.h>
-#include <libxml/xmlreader.h>
-#include <glib/ghash.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <libgnomevfs/gnome-vfs-file-size.h>
-#include <openssl/md5.h>
-#include <openssl/bn.h>
-#include <openssl/crypto.h>
-#include <glib/gstrfuncs.h>
-#include <ctype.h>
-#include "../../libcaptive/include/captive/libxml.h"
-
-#include <captive/macros.h>
-
-
-gchar *calc_md5(gconstpointer base,size_t length)
-{
-unsigned char md5_bin[1+128/8]; /* 128 bits==16 bytes; '1+' for leading stub to prevent shorter output of BN_bn2hex() */
-BIGNUM *bignum;
-char *hex;
-gchar *r,*gs;
-
- /* already done above */
- /* Calculate MD5 sum and convert it to hex string: */
- MD5(base,length,md5_bin+1);
- md5_bin[0]=0xFF; /* stub to prevent shorter output of BN_bn2hex() */
- bignum=BN_bin2bn(md5_bin,1+128/8,NULL);
- hex=BN_bn2hex(bignum);
- g_assert(strlen(hex)==2*(1+128/8));
- r=g_strdup(hex+2);
- OPENSSL_free(hex);
- BN_free(bignum);
-
- g_assert(strlen(r)==32);
- for (gs=r;*gs;gs++) {
- g_assert(isxdigit(*gs));
- *gs=tolower(*gs);
- g_assert(isxdigit(*gs));
- }
- return r;
-}
-
-
-/* map: GINT_TO_POINTER(captivemodid_module.length) -> !=NULL */
-static GHashTable *module_valid_length_hash;
-
-static void module_valid_length_hash_init(void)
-{
- if (module_valid_length_hash)
- return;
- module_valid_length_hash=g_hash_table_new(g_direct_hash,g_direct_equal);
-}
-
-/* map: (const xmlChar *)md5 -> (struct captivemodid_module *) */
-static GHashTable *module_md5_hash;
-
-static void module_md5_hash_init(void)
-{
- if (module_md5_hash)
- return;
- module_md5_hash=g_hash_table_new(g_str_hash,g_str_equal);
-}
-
-/* map: (const xmlChar *)type -> (gpointer)GINT_TO_POINTER(priority) */
-/* We remove entry for module with already the best priority found,
- * therefore captivemodid_module_type_best_priority_lookup() will return
- * 'G_MININT' afterwards.
- */
-static GHashTable *module_type_best_priority_hash;
-
-static void module_type_best_priority_hash_init(void)
-{
- if (module_type_best_priority_hash)
- return;
- module_type_best_priority_hash=g_hash_table_new(g_str_hash,g_str_equal);
-}
-
-static void captivemodid_load_module(struct captivemodid_module *module)
-{
-struct captivemodid_module *module_md5_conflict;
-gpointer valid_length_value_gpointer;
-
- module_md5_hash_init();
- if ((module_md5_conflict=g_hash_table_lookup(module_md5_hash,module->md5))) {
- g_warning(_("Ignoring module \"%s\" as it has MD5 conflict with: %s"),
- module->id,module_md5_conflict->id);
- return;
- }
- g_hash_table_insert(module_md5_hash,(/* de-const */ xmlChar *)module->md5,module);
-
- module_valid_length_hash_init();
- if (!g_hash_table_lookup_extended(module_valid_length_hash,GINT_TO_POINTER(module->length),
- NULL, /* orig_key */
- &valid_length_value_gpointer)) /* value */
- g_hash_table_insert(module_valid_length_hash,GINT_TO_POINTER(module->length),GINT_TO_POINTER(module->cabinet_used));
- else {
- /* Conflicting 'cabinet_used' values for single 'cabinet size'? */
- if (valid_length_value_gpointer && GPOINTER_TO_INT(valid_length_value_gpointer)!=module->cabinet_used)
- g_hash_table_insert(module_valid_length_hash,GINT_TO_POINTER(module->length),NULL);
- }
-
- if (strcmp((const char *)module->type,"cabinet")) {
- if (module->priority>captivemodid_module_type_best_priority_lookup(module->type)) {
- module_type_best_priority_hash_init();
- g_hash_table_insert(module_type_best_priority_hash,
- (/* de-const */ xmlChar *)module->type,GINT_TO_POINTER(module->priority));
- }
- }
-}
-
-gboolean captivemodid_module_length_is_valid(GnomeVFSFileSize file_size)
-{
-gint file_size_gint;
-
- if ((GnomeVFSFileSize)(file_size_gint=file_size)!=file_size) /* Size too big to be valid. */
- return FALSE;
- module_valid_length_hash_init();
- return g_hash_table_lookup_extended(module_valid_length_hash,GINT_TO_POINTER(file_size_gint),
- NULL, /* orig_key */
- NULL); /* value */
-}
-
-gint captivemodid_cabinet_length_to_used(gint cabinet_length)
-{
-gpointer valid_length_value_gpointer;
-
- if (!g_hash_table_lookup_extended(module_valid_length_hash,GINT_TO_POINTER(cabinet_length),
- NULL, /* orig_key */
- &valid_length_value_gpointer)) /* value */
- return 0;
- return GPOINTER_TO_INT(valid_length_value_gpointer);
-}
-
-struct captivemodid_module *captivemodid_module_md5_lookup(const gchar *file_md5)
-{
- g_return_val_if_fail(file_md5!=NULL,NULL);
-
- module_md5_hash_init();
- return g_hash_table_lookup(module_md5_hash,file_md5);
-}
-
-gint captivemodid_module_type_best_priority_lookup(const xmlChar *module_type)
-{
-gpointer r_gpointer;
-gboolean errbool;
-
- g_return_val_if_fail(module_type!=NULL,G_MININT);
-
- module_type_best_priority_hash_init();
- errbool=g_hash_table_lookup_extended(module_type_best_priority_hash,
- module_type, /* lookup_key */
- NULL, /* orig_key */
- &r_gpointer); /* value */
- if (!errbool)
- return G_MININT;
-
- return GPOINTER_TO_INT(r_gpointer);
-}
-
-/* Returns: TRUE if all modules were found. */
-gboolean captivemodid_module_type_best_priority_found(const xmlChar *module_type)
-{
-gboolean errbool;
-
- g_return_val_if_fail(module_type!=NULL,FALSE);
-
- module_type_best_priority_hash_init();
- errbool=g_hash_table_remove(module_type_best_priority_hash,module_type);
- g_assert(errbool==TRUE);
-
- return !g_hash_table_size(module_type_best_priority_hash);
-}
-
-static xmlChar *captivemodid_load_module_xml_get_attr
- (const gchar *captivemodid_pathname,xmlTextReader *xml_reader,const gchar *attr_name)
-{
-xmlChar *r;
-
- if (!(r=xmlTextReaderGetAttribute(xml_reader,BAD_CAST attr_name))) {
- /* FIXME: File line identification? */
- g_warning(_("%s: Undefined attributes: %s"),captivemodid_pathname,attr_name);
- return NULL;
- }
- return r;
-}
-
-static long captivemodid_load_module_xml_get_attr_l
- (const gchar *captivemodid_pathname,xmlTextReader *xml_reader,const gchar *attr_name,long num_min,long num_max)
-{
-xmlChar *string;
-long r;
-char *ends;
-
- g_return_val_if_fail(num_min-1<num_min,-1);
- g_return_val_if_fail(num_min<=num_max,num_min-1);
- g_return_val_if_fail(LONG_MIN<num_min,LONG_MIN);
- g_return_val_if_fail(num_max<LONG_MAX,num_min-1);
-
- if (!(string=captivemodid_load_module_xml_get_attr(captivemodid_pathname,xml_reader,attr_name)))
- return num_min-1;
- r=strtol((const char *)string,&ends,0);
- xmlFree(string);
- if (r<num_min || r>num_max) {
- g_warning(_("%s: Numer of out range %ld..%ld: %ld"),captivemodid_pathname,num_min,num_max,r);
- return num_min-1;
- }
- return r;
-}
-
-static void captivemodid_load_module_xml(const gchar *captivemodid_pathname,xmlTextReader *xml_reader)
-{
-struct captivemodid_module *module;
-xmlChar *cabinet_used_string;
-
- captive_new0(module);
- if (!(module->type=captivemodid_load_module_xml_get_attr(captivemodid_pathname,xml_reader,"type")))
- goto fail_free_module;
- if (!(module->md5 =captivemodid_load_module_xml_get_attr(captivemodid_pathname,xml_reader,"md5")))
- goto fail_free_module;
- if (strlen((const char *)module->md5)!=strspn((const char *)module->md5,"0123456789abcdef")) {
- g_warning(_("%s: Attribute 'md5' can be only lower-cased hexstring: %s"),captivemodid_pathname,module->md5);
- goto fail_free_module;
- }
- if (strlen((const char *)module->md5)!=32) {
- g_warning(_("%s: Attribute 'md5' length must be 32: %s"),captivemodid_pathname,module->md5);
- goto fail_free_module;
- }
- if (!(module->id =captivemodid_load_module_xml_get_attr(captivemodid_pathname,xml_reader,"id")))
- goto fail_free_module;
- if (0>=(module->length=captivemodid_load_module_xml_get_attr_l(
- captivemodid_pathname,xml_reader,"length",1,G_MAXINT-1)))
- goto fail_free_module;
- if (!(cabinet_used_string=xmlTextReaderGetAttribute(xml_reader,BAD_CAST "cabinet_used")))
- module->cabinet_used=0;
- else {
- xmlFree(cabinet_used_string);
- if (0>=(module->cabinet_used=captivemodid_load_module_xml_get_attr_l(
- captivemodid_pathname,xml_reader,"cabinet_used",1,G_MAXINT-1)))
- goto fail_free_module;
- }
- if (G_MININT>=(module->priority=captivemodid_load_module_xml_get_attr_l(captivemodid_pathname,xml_reader,"priority",
- G_MININT+1,G_MAXINT-1)))
- goto fail_free_module;
- captivemodid_load_module(module);
- return;
-
-fail_free_module:
- xmlFree((xmlChar *)module->type);
- xmlFree((xmlChar *)module->md5);
- xmlFree((xmlChar *)module->id);
- g_free(module);
-}
-
-static void captivemodid_load_foreach
- (const xmlChar *type /* key */,gpointer priority_gpointer /* value */,gpointer user_data /* unused */)
-{
- g_return_if_fail(type!=NULL);
-
- g_return_if_fail(captivemodid_module_best_priority_notify!=NULL);
-
- (*captivemodid_module_best_priority_notify)((const gchar *)type);
-}
-
-void (*captivemodid_module_best_priority_notify)(const gchar *module_type);
-
-gboolean captivemodid_load(const gchar *captivemodid_pathname)
-{
-xmlTextReader *xml_reader;
-
- if (!(xml_reader=xmlNewTextReaderFilename(captivemodid_pathname)))
- return FALSE;
- while (1==xmlTextReaderRead(xml_reader)) {
- switch (xmlTextReaderNodeType(xml_reader)) {
-
- case CAPTIVE_XML_TEXT_READER_NODE_TYPE_COMMENT:
- break;
-
- case CAPTIVE_XML_TEXT_READER_NODE_TYPE_SIGNIFICANT_WHITESPACE:
- break;
-
- case CAPTIVE_XML_TEXT_READER_NODE_TYPE_TEXT: /* Even empty nodes have some '#text'. */
- break;
-
- case CAPTIVE_XML_TEXT_READER_NODE_TYPE_END: /* We do not track tag ends. */
- break;
-
- case CAPTIVE_XML_TEXT_READER_NODE_TYPE_START: {
-const xmlChar *xml_name;
-
- xml_name=xmlTextReaderName(xml_reader);
- /**/ if (!xmlStrcmp(xml_name,BAD_CAST "modid")) { /* root tag */
- }
- else if (!xmlStrcmp(xml_name,BAD_CAST "module"))
- captivemodid_load_module_xml(captivemodid_pathname,xml_reader);
- else g_warning(_("%s: Unknown ELEMENT node: %s"),captivemodid_pathname,xml_name);
- xmlFree((xmlChar *)xml_name);
- } break;
-
- default: g_assert_not_reached();
- }
- }
- xmlFreeTextReader(xml_reader);
-
- if (captivemodid_module_best_priority_notify) {
- g_hash_table_foreach(module_type_best_priority_hash,
- (GHFunc)captivemodid_load_foreach,NULL);
- }
- return TRUE;
-}
git://git.jankratochvil.net / captive.git / blobdiff