Supported the Java Class file format.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@46 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

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);
+
+}