diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2009-01-25 21:27:14 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2009-01-25 21:27:14 (GMT) |
commit | 21493170bb188ad9548820c830c3e8d7055e3f46 (patch) | |
tree | fdc4d03b0aaa5e7ed8a0b8b151926f654cece321 /src/format/java/e_java.c | |
parent | 8f1e49332cd81760c98166be9df79a7136f5ca57 (diff) |
Supported the Java Class file format.
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@46 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/format/java/e_java.c')
-rwxr-xr-x | src/format/java/e_java.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/format/java/e_java.c b/src/format/java/e_java.c new file mode 100755 index 0000000..e2f8fbf --- /dev/null +++ b/src/format/java/e_java.c @@ -0,0 +1,173 @@ + +/* OpenIDA - Outil d'analyse de fichiers binaires + * e_java.c - support du format Java + * + * Copyright (C) 2008 Cyrille Bagard + * + * This file is part of OpenIDA. + * + * OpenIDA 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; either version 3 of the License, or + * (at your option) any later version. + * + * OpenIDA 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 Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "e_java.h" + + +#include <malloc.h> +#include <string.h> + + +#include "attribute.h" +#include "field.h" +#include "java-int.h" +#include "method.h" +#include "pool.h" +#include "../../common/endianness.h" + + + +/****************************************************************************** +* * +* Paramètres : content = contenu binaire à parcourir. * +* length = taille du contenu en question. * +* * +* Description : Indique si le format peut être pris en charge ici. * +* * +* Retour : true si la réponse est positive, false sinon. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool java_is_matching(const uint8_t *content, off_t length) +{ + bool result; /* Bilan à faire connaître */ + + result = false; + + if (length >= 4) + result = (strncmp((const char *)content, "\xca\xfe\xba\xbe", 4) == 0); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : content = contenu binaire à parcourir. * +* length = taille du contenu en question. * +* * +* Description : Prend en charge une nouvelle classe Java. * +* * +* Retour : Adresse de la structure mise en place ou NULL en cas d'échec.* +* * +* Remarques : - * +* * +******************************************************************************/ + +exe_format *load_java(const uint8_t *content, off_t length) +{ + java_format *result; /* Adresse à retourner */ + off_t pos; /* Point d'analyse */ + uint32_t magic; /* Identifiant Java */ + uint16_t i; /* Boucle de parcours */ + + result = (java_format *)calloc(1, sizeof(java_format)); + + EXE_FORMAT(result)->content = content; + EXE_FORMAT(result)->length = length; + + pos = 0; + + if (!read_u32(&magic, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!read_u16(&result->minor_version, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!read_u16(&result->major_version, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!load_java_pool(result, &pos)) + goto ldj_error; + + if (!read_u16((uint16_t *)&result->access, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!read_u16(&result->this_class, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!read_u16(&result->super_class, content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!read_u16(&result->interfaces_count, content, &pos, length, SRE_BIG)) + goto ldj_error; + + for (i = 0; i < result->interfaces_count; i++) + if (!read_u16(&result->interfaces[i], content, &pos, length, SRE_BIG)) + goto ldj_error; + + if (!load_java_fields(result, &pos)) + goto ldj_error; + + if (!load_java_methods(result, &pos)) + goto ldj_error; + + if (!load_java_attributes(result, &pos, &result->attributes, &result->attributes_count)) + goto ldj_error; + + return EXE_FORMAT(result); + + ldj_error: + + unload_java(result); + + return NULL; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à supprimer. * +* * +* Description : Efface la prise en charge une nouvelle classe Java. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void unload_java(java_format *format) +{ + if (format->pool_len > 0) + unload_java_pool(format); + + if (format->interfaces_count > 0) + free(format->interfaces); + + if (format->fields_count > 0) + unload_java_fields(format); + + if (format->methods_count > 0) + unload_java_methods(format); + + if (format->attributes_count > 0) + unload_java_attributes(format, format->attributes, format->attributes_count); + + free(format); + +} |