Supported the Java Class file format.

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

3 files changed, 236 insertions, 0 deletions

diff --git a/src/common/Makefile.am b/src/common/Makefile.am
new file mode 100755
index 0000000..323ba17
--- /dev/null
+++ b/src/common/Makefile.am
@@ -0,0 +1,16 @@
+
+lib_LIBRARIES = libcommon.a
+
+libcommon_a_SOURCES =					\
+	endianness.h endianness.c
+
+libcommon_a_CFLAGS = $(AM_CFLAGS)
+
+
+INCLUDES = 
+
+AM_CPPFLAGS = 
+
+AM_CFLAGS = $(DEBUG_CFLAGS) $(WARNING_FLAGS)
+
+SUBDIRS = 
diff --git a/src/common/endianness.c b/src/common/endianness.c
new file mode 100755
index 0000000..202262a
--- /dev/null
+++ b/src/common/endianness.c
@@ -0,0 +1,166 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * endianness.c - manipulation abstraite des nombres
+ *
+ * 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 "endianness.h"
+
+
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : target = lieu d'enregistrement de la lecture. [OUT]          *
+*                data   = flux de données à analyser.                         *
+*                pos    = position courante dans ce flux. [OUT]               *
+*                len    = taille totale des données à analyser.               *
+*                endian = ordre des bits dans la source.                      *
+*                                                                             *
+*  Description : Lit un nombre non signé sur un octet.                        *
+*                                                                             *
+*  Retour      : Bilan de l'opération : true en cas de succès, false sinon.   *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool read_u8(uint8_t *target, const uint8_t *data, off_t *pos, off_t len, SourceEndian endian)
+{
+    if ((len - *pos) < 1) return false;
+
+    *target = data[*pos];
+
+    *pos += 1;
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : target = lieu d'enregistrement de la lecture. [OUT]          *
+*                data   = flux de données à analyser.                         *
+*                pos    = position courante dans ce flux. [OUT]               *
+*                len    = taille totale des données à analyser.               *
+*                endian = ordre des bits dans la source.                      *
+*                                                                             *
+*  Description : Lit un nombre non signé sur deux octets.                     *
+*                                                                             *
+*  Retour      : Bilan de l'opération : true en cas de succès, false sinon.   *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool read_u16(uint16_t *target, const uint8_t *data, off_t *pos, off_t len, SourceEndian endian)
+{
+    if ((len - *pos) < 2) return false;
+
+    switch (endian)
+    {
+
+
+
+        case SRE_BIG:
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+
+            *target = data[*pos + 1] | (uint16_t)data[*pos] << 8;
+
+#elif __BYTE_ORDER == __BIG_ENDIAN
+
+            *target = data[*pos] | (uint16_t)data[*pos + 1] << 8;
+
+#else
+
+#   error "TODO : PDP !"
+
+#endif
+
+            break;
+
+
+    }
+
+    *pos += 2;
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : target = lieu d'enregistrement de la lecture. [OUT]          *
+*                data   = flux de données à analyser.                         *
+*                pos    = position courante dans ce flux. [OUT]               *
+*                len    = taille totale des données à analyser.               *
+*                endian = ordre des bits dans la source.                      *
+*                                                                             *
+*  Description : Lit un nombre non signé sur quatre octets.                   *
+*                                                                             *
+*  Retour      : Bilan de l'opération : true en cas de succès, false sinon.   *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool read_u32(uint32_t *target, const uint8_t *data, off_t *pos, off_t len, SourceEndian endian)
+{
+    if ((len - *pos) < 4) return false;
+
+    switch (endian)
+    {
+
+
+
+        case SRE_BIG:
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+
+            *target = data[*pos + 3] | (uint16_t)data[*pos + 2] << 8;
+            *target |= data[*pos + 1] << 16 | (uint16_t)data[*pos] << 24;
+
+#elif __BYTE_ORDER == __BIG_ENDIAN
+
+            *target = data[*pos] | (uint16_t)data[*pos + 1] << 8;
+            *target |= data[*pos + 2] << 16 | (uint16_t)data[*pos + 3] << 24;
+
+#else
+
+#   error "TODO : PDP !"
+
+#endif
+
+            break;
+
+
+    }
+
+    *pos += 4;
+
+    return true;
+
+}
diff --git a/src/common/endianness.h b/src/common/endianness.h
new file mode 100755
index 0000000..7ae9575
--- /dev/null
+++ b/src/common/endianness.h
@@ -0,0 +1,54 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * endianness.h - prototypes pour la manipulation abstraite des nombres
+ *
+ * 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/>.
+ */
+
+
+#ifndef _COMMON_ENDIANNESS_H
+#define _COMMON_ENDIANNESS_H
+
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+
+/* Type de boutismes existants */
+typedef enum _SourceEndian
+{
+    SRE_LITTLE,                             /* Petits boutistes            */
+    SRE_BIG,                                /* Gros boutistes              */
+    SRE_MIDDLE                              /* Moyens boutistes            */
+
+} SourceEndian;
+
+
+/* Lit un nombre non signé sur un octet. */
+bool read_u8(uint8_t *, const uint8_t *, off_t *, off_t, SourceEndian );
+
+/* Lit un nombre non signé sur deux octets. */
+bool read_u16(uint16_t *, const uint8_t *, off_t *, off_t, SourceEndian);
+
+/* Lit un nombre non signé sur quatre octets. */
+bool read_u32(uint32_t *, const uint8_t *, off_t *, off_t, SourceEndian);
+
+
+
+#endif  /* _COMMON_ENDIANNESS_H */