initial code for dumping imessages in a reasonable format

dump-imessages/.gitignore

@@ -0,0 +1 @@
+*.tmp

dump-imessages/Makefile

@@ -0,0 +1,7 @@
+default: dump
+
+dump:
+	./dump.sh
+
+clean:
+	rm -rf *.tmp

dump-imessages/README.md

@@ -0,0 +1,5 @@
+# notes
+
+* iphone-dataprotection cloned from
+https://code.google.com/p/iphone-dataprotection/ on 20140207
+

dump-imessages/dump.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+BACKUPS=""
+
+for B in ls ~/Library/Application\ Support/MobileSync/Backup/* ; do
+    BACKUPS+=" $(basename "$B")"
+done
+
+if [ -r ${HOME}/Documents/Secure/iphone-backup-password.sh ]; then
+    source "${HOME}/Documents/Secure/iphone-backup-password.sh"
+fi
+
+# expecting $IPHONE_BACKUP_PASSWORD to be set now. set it in your
+# environment if not, or put a script exporting it at that path above
+
+echo $BACKUPS
+
+WORKDIR="$TMPDIR/iphone-sms-dump.workd"
+if [ ! -d "$WORKDIR" ]; then
+    mkdir -p "$WORKDIR"
+fi
+
+for BID in $BACKUPS ; do
+    if [ ! -r $WORKDIR/sms-$BID.db ]; then
+        TD="$(mktemp -d -t bdir)/out"
+        echo -e "y\n$IPHONE_BACKUP_PASSWORD" |
+        python ./iphone-dataprotection/python_scripts/backup_tool.py \
+            "${HOME}/Library/Application Support/MobileSync/Backup/$BID" \
+            "$TD" 2>&1 > /dev/null # hush
+        echo "extracted to $TD"
+        mv "$TD/HomeDomain/Library/SMS/sms.db" ./sms-$BID.db
+        mv "$TD/MediaDomain/Library/SMS/Attachments" ./Attachments-$BID.d
+        rm -rf "$TD"
+    fi
+done
+
+for BID in $BACKUPS ; do
+    # now we process them...
+done

dump-imessages/iphone-dataprotection/.hgignore

@@ -0,0 +1,8 @@
+# use glob syntax.
+syntax: glob
+
+*.o
+*.pyc
+*.dmg
+*.ipsw
+

dump-imessages/iphone-dataprotection/CREDITS.txt

@@ -0,0 +1,7 @@
+comex
+chronic dev team
+idroid/openiboot team
+iphone dev team
+Jonathan Zdziarski
+msftguy
+planetbeing

dump-imessages/iphone-dataprotection/README.txt

@@ -0,0 +1 @@
+See http://code.google.com/p/iphone-dataprotection/wiki/README

dump-imessages/iphone-dataprotection/build_ramdisk.sh

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+#set +e
+#set -o errexit
+
+if [ $# -lt 4 ]
+then
+    echo "Syntax: $0 IPSW RAMDISK KEY IV CUSTOMRAMDISK"
+    echo "python_scripts/kernel_patcher.py can generate a shell script with the correct parameters"
+    exit
+fi
+
+if [ ! -f ramdisk_tools/restored_external ]
+then
+    echo "ramdisk_tools/restored_external not found, check compilation output for errors"
+    exit -1
+fi
+
+IPSW=$1
+RAMDISK=$2
+KEY=$3
+IV=$4
+CUSTOMRAMDISK=$5
+if [ "$CUSTOMRAMDISK" == "" ]; then
+    CUSTOMRAMDISK="myramdisk.dmg"
+fi
+IMG3FS="./img3fs/img3fs"
+IMG3MNT="/tmp/img3"
+
+if [ ! -f $IMG3FS ]; then
+    echo "img3fs is missing, install osxfuse and run make -C img3fs/"
+    exit -1
+fi
+
+if [ ! -f ssh.tar.gz ]; then
+    echo "Downloading ssh.tar.gz from googlecode"
+    curl -O http://iphone-dataprotection.googlecode.com/files/ssh.tar.gz
+fi
+
+unzip $IPSW $RAMDISK
+
+if [ -d "/Volumes/ramdisk" ]; then
+    hdiutil eject /Volumes/ramdisk
+    umount $IMG3MNT
+fi
+
+mkdir -p $IMG3MNT
+
+$IMG3FS -key $KEY -iv $IV $IMG3MNT $RAMDISK
+
+hdiutil attach -owners off $IMG3MNT/DATA.dmg
+
+#remove baseband files to free space
+rm -rf /Volumes/ramdisk/usr/local/standalone/firmware/*
+rm -rf /Volumes/ramdisk/usr/share/progressui/
+#dont replace existing files, replacing launchctl on armv6 ramdisks makes it fail somehow
+tar -C /Volumes/ramdisk/ -xzkP <  ssh.tar.gz
+rm /Volumes/ramdisk/bin/vdir
+rm /Volumes/ramdisk/bin/egrep
+rm /Volumes/ramdisk/bin/grep
+
+#rm /Volumes/ramdisk/usr/local/bin/restored_external
+cp ramdisk_tools/restored_external /Volumes/ramdisk/usr/local/bin
+
+cp ramdisk_tools/bruteforce ramdisk_tools/device_infos /Volumes/ramdisk/var/root
+cp ramdisk_tools/scripts/* /Volumes/ramdisk/var/root
+cp ramdisk_tools/ioflashstoragekit /Volumes/ramdisk/var/root
+
+#if present, copy ssh public key to ramdisk
+if [ -f ~/.ssh/id_rsa.pub ]; then
+	mkdir /Volumes/ramdisk/var/root/.ssh
+	cp ~/.ssh/id_rsa.pub /Volumes/ramdisk/var/root/.ssh/authorized_keys
+fi
+
+hdiutil eject /Volumes/ramdisk
+umount $IMG3MNT
+
+mv $RAMDISK $CUSTOMRAMDISK
+
+#echo "$CUSTOMRAMDISK created"
+

dump-imessages/iphone-dataprotection/build_ramdisk_ios6.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+
+if [ ! $(uname) == "Darwin" ]
+then
+    echo "Script for Mac OS X only"
+    exit
+fi
+
+if [ $# -lt 1 ]
+then
+    echo "Syntax: $0 DECRYPTED_RAMDISK_DMG"
+    exit
+fi
+
+if [ ! -f ssh.tar.gz ]
+then
+    echo "Downloading ssh.tar.gz from googlecode"
+    curl -O http://iphone-dataprotection.googlecode.com/files/ssh.tar.gz
+fi
+
+if [ ! -f libncurses.5.dylib ]
+then
+    echo "Downloading libncurses.5.dylib from googlecode"
+    curl -O http://iphone-dataprotection.googlecode.com/files/libncurses.5.dylib
+fi
+
+echo "Rebuilding ramdisk_tools"
+
+./build_tools.sh
+
+#compiling in a vmware shared folder can produce binaries filled with zeroes !
+if [ ! -f ramdisk_tools/restored_external ] || [ "$(file -b ramdisk_tools/restored_external)" == "data" ]
+then
+    echo "ramdisk_tools/restored_external not found or invalid, check compilation output for errors"
+    exit -1
+fi
+
+RAMDISK=$1
+
+RD_SIZE=$(du -h $RAMDISK  | cut -f 1)
+
+if [ ! $RD_SIZE == "20M" ]
+then
+    echo "resizing ramdisk..."
+    echo "hdiutil will segfault if ramdisk was already resized, thats ok"
+    hdiutil resize -size 20M $RAMDISK
+fi
+
+if [ -d /Volumes/ramdisk ]
+then
+    echo "Unmount /Volumes/ramdisk then try again"
+    exit -1
+fi
+
+echo "Attaching ramdisk"
+
+hdiutil attach $RAMDISK
+rm -rf /Volumes/ramdisk/usr/local/standalone/firmware/*
+rm -rf /Volumes/ramdisk/usr/share/progressui/
+
+if [ ! -f /Volumes/ramdisk/sbin/sshd ]
+then
+    echo "Unpacking ssh.tar.gz on ramdisk..."
+    tar -C /Volumes/ramdisk/ -xzkP <  ssh.tar.gz
+    echo "^^ This tar error message is okay"
+fi
+
+if [ ! -f /Volumes/ramdisk/usr/lib/libncurses.5.4.dylib ]
+then
+    echo "Adding libncurses..."
+    cp libncurses.5.dylib /Volumes/ramdisk/usr/lib/libncurses.5.4.dylib
+fi
+
+echo "Adding/updating ramdisk_tools binaries on ramdisk..."
+cp ramdisk_tools/restored_external /Volumes/ramdisk/usr/local/bin/
+cp ramdisk_tools/bruteforce ramdisk_tools/device_infos /Volumes/ramdisk/var/root
+cp ramdisk_tools/scripts/* /Volumes/ramdisk/var/root
+
+ls -laht /Volumes/ramdisk/usr/local/bin/
+
+#if present, copy ssh public key to ramdisk
+if [ -f ~/.ssh/id_rsa.pub ] && [ ! -d /Volumes/ramdisk/var/root/.ssh ]
+then
+    mkdir /Volumes/ramdisk/var/root/.ssh
+    cp ~/.ssh/id_rsa.pub /Volumes/ramdisk/var/root/.ssh/authorized_keys
+    chmod 0600 /Volumes/ramdisk/var/root/.ssh/authorized_keys
+fi
+
+hdiutil eject /Volumes/ramdisk

dump-imessages/iphone-dataprotection/build_tools.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+if [ ! $(uname) == "Darwin" ]
+then
+    echo "Script for Mac OS X only"
+    exit
+fi
+
+for VER in 5.0 5.1 6.0 6.1 7.0
+do
+    if [ -d "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS$VER.sdk/" ];
+    then
+        SDKVER=$VER
+        SDKPATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS$VER.sdk/"
+        echo "Found iOS SDK at $SDKPATH"
+        break
+    fi
+done
+
+if [ "$SDKVER" == "" ]; then
+    echo "iOS SDK not found"
+    exit -1
+fi
+
+if [ ! -f "$SDKPATH/System/Library/Frameworks/IOKit.framework/Headers/IOKitLib.h" ]; then
+    echo "IOKit headers missing"
+    
+    $IOKIT_HDR_109="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/IOKit.framework/Headers"
+
+    if [ -d $IOKIT_HDR_109 ]; then
+        echo "Symlinking headers"
+        sudo ln -s $IOKIT_HDR_109 "$SDKPATH/System/Library/Frameworks/IOKit.framework/Headers"
+        sudo ln -s "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libkern/OSTypes.h" "$SDKPATH/usr/include/libkern/OSTypes.h"
+    fi
+    
+fi
+
+if [ ! -f "$SDKPATH/System/Library/Frameworks/IOKit.framework/IOKit" ]; then
+    echo "IOKit binary missing"
+
+    if [ -f "$SDKPATH/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit" ]; then
+        echo "Creating IOKit symlink for iOS 7.0 SDK"
+        sudo ln -s "$SDKPATH/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit" "$SDKPATH/System/Library/Frameworks/IOKit.framework/IOKit"
+    fi
+fi
+
+if [ -f "$SDKPATH/System/Library/Frameworks/IOKit.framework/Headers/IOKitLib.h" ]; then
+    if [ -f "$SDKPATH/System/Library/Frameworks/IOKit.framework/IOKit" ]; then
+        export SDKVER
+        make -C ramdisk_tools clean
+        make -C ramdisk_tools
+    fi
+fi

dump-imessages/iphone-dataprotection/dump_data_partition.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+SSHOPTS="-p 2222 -oStrictHostKeyChecking=no -oUserKnownHostsFile=/dev/null"
+
+UDID=`ssh $SSHOPTS root@localhost "./device_infos udid"`
+
+if [ "$UDID" == "" ]; then
+    exit
+fi
+
+echo "Device UDID : $UDID"
+
+mkdir -p $UDID
+
+DATE=`date +"%Y%m%d-%H%M"`
+OUT=$UDID/data_$DATE.dmg
+
+echo "Dumping data partition in $OUT ..."
+
+ssh $SSHOPTS root@localhost "dd if=/dev/rdisk0s2s1  bs=8192 || dd if=/dev/rdisk0s1s2  bs=8192" > $OUT

dump-imessages/iphone-dataprotection/emf_decrypter/BUILD

@@ -0,0 +1,92 @@
+INSTRUCTIONS FOR BUILDING XPWN
+------------------------------
+
+These are very basic instructions on how to build xpwn related projects, they
+are tailored to Debian based systems. They are not meant to be a substitute
+for experience in programming in GNU/Linux environments, but it should be a
+good starting point.
+
+1. Install a basic build environment (compilers, etc.):
+
+	sudo apt-get install build-essential
+
+2. Install some prerequisites libraries required by xpwn:
+
+	sudo apt-get install libcrypt-dev libz-dev libbz2-dev3 libusb-dev
+
+3. Install cmake. It is recommended you download and build it from the
+official cmake website, since versions >= 2.6.0 are recommended.
+
+	wget http://www.cmake.org/files/v2.6/cmake-2.6.2.tar.gz
+	tar zxvf cmake-2.6.2.tar.gz
+	cd cmake-2.6.2
+	./configure
+	make
+	sudo make install
+
+Now you are ready to build xpwn. It is highly recommended that you build
+out-of-source (that is, the build products are not placed into the same
+folders as the sources). This is much neater and cleaning up is as simple as
+deleting the build products folder.
+
+Assuming xpwn sources are in ~/xpwn:
+
+4. Create a build folder
+
+	cd ~
+	mkdir build
+	cd build
+
+5. Create Makefiles
+
+	cmake ~/xpwn
+
+6. Build
+
+	make
+
+7. Package
+
+	make package
+
+BUILDING USEFUL LIBRARIES
+-------------------------
+
+These command-lines can be substituted in for step 6. The products are in the
+subfolders (make package will not include them).
+
+xpwn library (for IPSW generation)
+
+	make libXPwn.a
+
+Windows pwnmetheus library (for QuickPwn)
+
+	make libpwnmetheus.dll
+
+HELPFUL MAKEFILE GENERATION COMMAND-LINES
+-----------------------------------------
+
+These command-lines can be substituted in for step 5.
+
+Add debugging symbols:
+
+	cmake ~/xpwn -DCMAKE_C_FLAGS=-g
+
+Try to only use static libraries:
+
+	cmake ~/xpwn -DBUILD_STATIC=YES
+
+
+CROSS-COMPILING
+---------------
+
+This is a complex and advanced topic, but it is possible with the appropriate
+CMake toolchain files and properly configured build environment. I have
+crossbuilt Windows, OS X, Linux x86, Linux x64, and iPhone binaries from one
+Ubuntu machine. The source trees are properly configured for this task.
+
+MORE HELP
+---------
+
+Consult the CMake documentation and wiki and look in the CMakeLists.txt files
+for hints on how things are supposed to work.

dump-imessages/iphone-dataprotection/emf_decrypter/CMakeLists.txt

@@ -0,0 +1,29 @@
+cmake_minimum_required(VERSION 2.6)
+set(CMAKE_LEGACY_CYGWIN_WIN32 0)
+
+project (XPwn)
+
+# We want win32 executables to build staticly by default, since it's more difficult to keep the shared libraries straight on Windows
+IF(WIN32)
+	SET(BUILD_STATIC ON CACHE BOOL "Force compilation with static libraries")
+ELSE(WIN32)
+	SET(BUILD_STATIC OFF CACHE BOOL "Force compilation with static libraries")
+ENDIF(WIN32)
+
+IF(BUILD_STATIC)
+	SET(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+ENDIF(BUILD_STATIC)
+
+include_directories (${PROJECT_SOURCE_DIR}/includes)
+
+add_subdirectory (common)
+add_subdirectory (hfs)
+add_subdirectory (emf)
+
+IF(WIN32 OR APPLE)
+	SET(CPACK_GENERATOR "ZIP")
+ELSE(WIN32 OR APPLE)
+	SET(CPACK_GENERATOR "TBZ2")
+ENDIF(WIN32 OR APPLE)
+
+INCLUDE(CPack)

dump-imessages/iphone-dataprotection/emf_decrypter/LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
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+
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+you modify it: responsibilities to respect the freedom of others.
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+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

dump-imessages/iphone-dataprotection/emf_decrypter/README.txt

@@ -0,0 +1,13 @@
+DEPRECATED: use the python version instead
+
+Decrypts files data forks in raw iOS 4 disk images.
+Reads encryption keys from plist file named after the volume ID.
+The plist file must have at least the EMF and DKey fields set.
+For now the tool decrypts the data forks but does not mark the files as 
+"decrypted" : running it twice on the same image will produce garbage. 
+Interrupting the process will also leave the image "half decrypted".
+
+Uses planetbeing/dev team HFS implementation
+https://github.com/planetbeing/xpwn
+
+Only builds on Mac OS X, requires CoreFoundation for plist access.

dump-imessages/iphone-dataprotection/emf_decrypter/common/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_library(common abstractfile.c base64.c)
+

dump-imessages/iphone-dataprotection/emf_decrypter/common/abstractfile.c

@@ -0,0 +1,311 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+#include "abstractfile.h"
+#include "common.h"
+
+size_t freadWrapper(AbstractFile* file, void* data, size_t len) {
+  return fread(data, 1, len, (FILE*) (file->data));
+}
+
+size_t fwriteWrapper(AbstractFile* file, const void* data, size_t len) {
+  return fwrite(data, 1, len, (FILE*) (file->data));
+}
+
+int fseekWrapper(AbstractFile* file, off_t offset) {
+  return fseeko((FILE*) (file->data), offset, SEEK_SET);
+}
+
+off_t ftellWrapper(AbstractFile* file) {
+  return ftello((FILE*) (file->data));
+}
+
+void fcloseWrapper(AbstractFile* file) {
+  fclose((FILE*) (file->data));
+  free(file);
+}
+
+off_t fileGetLength(AbstractFile* file) {
+	off_t length;
+	off_t pos;
+
+	pos = ftello((FILE*) (file->data));
+
+	fseeko((FILE*) (file->data), 0, SEEK_END);
+	length = ftello((FILE*) (file->data));
+
+	fseeko((FILE*) (file->data), pos, SEEK_SET);
+
+	return length;
+}
+
+AbstractFile* createAbstractFileFromFile(FILE* file) {
+	AbstractFile* toReturn;
+
+	if(file == NULL) {
+		return NULL;
+	}
+
+	toReturn = (AbstractFile*) malloc(sizeof(AbstractFile));
+	toReturn->data = file;
+	toReturn->read = freadWrapper;
+	toReturn->write = fwriteWrapper;
+	toReturn->seek = fseekWrapper;
+	toReturn->tell = ftellWrapper;
+	toReturn->getLength = fileGetLength;
+	toReturn->close = fcloseWrapper;
+	toReturn->type = AbstractFileTypeFile;
+	return toReturn;
+}
+
+size_t dummyRead(AbstractFile* file, void* data, size_t len) {
+  return 0;
+}
+
+size_t dummyWrite(AbstractFile* file, const void* data, size_t len) {
+  *((off_t*) (file->data)) += len;
+  return len;
+}
+
+int dummySeek(AbstractFile* file, off_t offset) {
+  *((off_t*) (file->data)) = offset;
+  return 0;
+}
+
+off_t dummyTell(AbstractFile* file) {
+  return *((off_t*) (file->data));
+}
+
+void dummyClose(AbstractFile* file) {
+  free(file);
+}
+
+AbstractFile* createAbstractFileFromDummy() {
+	AbstractFile* toReturn;
+	toReturn = (AbstractFile*) malloc(sizeof(AbstractFile));
+	toReturn->data = NULL;
+	toReturn->read = dummyRead;
+	toReturn->write = dummyWrite;
+	toReturn->seek = dummySeek;
+	toReturn->tell = dummyTell;
+	toReturn->getLength = NULL;
+	toReturn->close = dummyClose;
+	toReturn->type = AbstractFileTypeDummy;
+	return toReturn;
+}
+
+size_t memRead(AbstractFile* file, void* data, size_t len) {
+  MemWrapperInfo* info = (MemWrapperInfo*) (file->data); 
+  if(info->bufferSize < (info->offset + len)) {
+    len = info->bufferSize - info->offset;
+  }
+  memcpy(data, (void*)((uint8_t*)(*(info->buffer)) + (uint32_t)info->offset), len);
+  info->offset += (size_t)len;
+  return len;
+}
+
+size_t memWrite(AbstractFile* file, const void* data, size_t len) {
+  MemWrapperInfo* info = (MemWrapperInfo*) (file->data);
+  
+  while((info->offset + (size_t)len) > info->bufferSize) {
+    info->bufferSize <<= 1;
+    *(info->buffer) = realloc(*(info->buffer), info->bufferSize);
+  }
+  
+  memcpy((void*)((uint8_t*)(*(info->buffer)) + (uint32_t)info->offset), data, len);
+  info->offset += (size_t)len;
+  return len;
+}
+
+int memSeek(AbstractFile* file, off_t offset) {
+  MemWrapperInfo* info = (MemWrapperInfo*) (file->data);
+  info->offset = (size_t)offset;
+  return 0;
+}
+
+off_t memTell(AbstractFile* file) {
+  MemWrapperInfo* info = (MemWrapperInfo*) (file->data);
+  return (off_t)info->offset;
+}
+
+off_t memGetLength(AbstractFile* file) {
+  MemWrapperInfo* info = (MemWrapperInfo*) (file->data);
+  return info->bufferSize;
+}
+
+void memClose(AbstractFile* file) {
+  free(file->data);
+  free(file);
+}
+
+AbstractFile* createAbstractFileFromMemory(void** buffer, size_t size) {
+	MemWrapperInfo* info;
+	AbstractFile* toReturn;
+	toReturn = (AbstractFile*) malloc(sizeof(AbstractFile));
+	
+	info = (MemWrapperInfo*) malloc(sizeof(MemWrapperInfo));
+	info->offset = 0;
+	info->buffer = buffer;
+	info->bufferSize = size;
+
+	toReturn->data = info;
+	toReturn->read = memRead;
+	toReturn->write = memWrite;
+	toReturn->seek = memSeek;
+	toReturn->tell = memTell;
+	toReturn->getLength = memGetLength;
+	toReturn->close = memClose;
+	toReturn->type = AbstractFileTypeMem;
+	return toReturn;
+}
+
+void abstractFilePrint(AbstractFile* file, const char* format, ...) {
+	va_list args;
+	char buffer[1024];
+	size_t length;
+
+	buffer[0] = '\0';
+	va_start(args, format);
+	length = vsprintf(buffer, format, args);
+	va_end(args);
+	ASSERT(file->write(file, buffer, length) == length, "fwrite");
+}
+
+int absFileRead(io_func* io, off_t location, size_t size, void *buffer) {
+	AbstractFile* file;
+	file = (AbstractFile*) io->data;
+	file->seek(file, location);
+	if(file->read(file, buffer, size) == size) {
+		return TRUE;
+	} else {
+		return FALSE;
+	}
+}
+
+int absFileWrite(io_func* io, off_t location, size_t size, void *buffer) {
+	AbstractFile* file;
+	file = (AbstractFile*) io->data;
+	file->seek(file, location);
+	if(file->write(file, buffer, size) == size) {
+		return TRUE;
+	} else {
+		return FALSE;
+	}
+}
+
+void closeAbsFile(io_func* io) {
+	AbstractFile* file;
+	file = (AbstractFile*) io->data;
+	file->close(file);
+	free(io);
+}
+
+
+io_func* IOFuncFromAbstractFile(AbstractFile* file) {
+	io_func* io;
+
+	io = (io_func*) malloc(sizeof(io_func));
+	io->data = file;
+	io->read = &absFileRead;
+	io->write = &absFileWrite;
+	io->close = &closeAbsFile;
+
+	return io;
+}
+
+size_t memFileRead(AbstractFile* file, void* data, size_t len) {
+  MemFileWrapperInfo* info = (MemFileWrapperInfo*) (file->data); 
+  memcpy(data, (void*)((uint8_t*)(*(info->buffer)) + (uint32_t)info->offset), len);
+  info->offset += (size_t)len;
+  return len;
+}
+
+size_t memFileWrite(AbstractFile* file, const void* data, size_t len) {
+  MemFileWrapperInfo* info = (MemFileWrapperInfo*) (file->data);
+  
+  while((info->offset + (size_t)len) > info->actualBufferSize) {
+		info->actualBufferSize <<= 1;
+    *(info->buffer) = realloc(*(info->buffer), info->actualBufferSize);
+  }
+  
+  if((info->offset + (size_t)len) > (*(info->bufferSize))) {
+		memset(((uint8_t*)(*(info->buffer))) + *(info->bufferSize), 0, (info->offset + (size_t)len) - *(info->bufferSize));
+		*(info->bufferSize) = info->offset + (size_t)len;
+	}
+      
+  memcpy((void*)((uint8_t*)(*(info->buffer)) + (uint32_t)info->offset), data, len);
+  info->offset += (size_t)len;
+  return len;
+}
+
+int memFileSeek(AbstractFile* file, off_t offset) {
+  MemFileWrapperInfo* info = (MemFileWrapperInfo*) (file->data);
+  info->offset = (size_t)offset;
+  return 0;
+}
+
+off_t memFileTell(AbstractFile* file) {
+  MemFileWrapperInfo* info = (MemFileWrapperInfo*) (file->data);
+  return (off_t)info->offset;
+}
+
+off_t memFileGetLength(AbstractFile* file) {
+  MemFileWrapperInfo* info = (MemFileWrapperInfo*) (file->data);
+  return *(info->bufferSize);
+}
+
+void memFileClose(AbstractFile* file) {
+  free(file->data);
+  free(file);
+}
+
+AbstractFile* createAbstractFileFromMemoryFile(void** buffer, size_t* size) {
+	MemFileWrapperInfo* info;
+	AbstractFile* toReturn;
+	toReturn = (AbstractFile*) malloc(sizeof(AbstractFile));
+	
+	info = (MemFileWrapperInfo*) malloc(sizeof(MemFileWrapperInfo));
+	info->offset = 0;
+	info->buffer = buffer;
+	info->bufferSize = size;
+	info->actualBufferSize = (1024 < (*size)) ? (*size) : 1024;
+	if(info->actualBufferSize != *(info->bufferSize)) {
+		*(info->buffer) = realloc(*(info->buffer), info->actualBufferSize);
+	}
+
+	toReturn->data = info;
+	toReturn->read = memFileRead;
+	toReturn->write = memFileWrite;
+	toReturn->seek = memFileSeek;
+	toReturn->tell = memFileTell;
+	toReturn->getLength = memFileGetLength;
+	toReturn->close = memFileClose;
+	toReturn->type = AbstractFileTypeMemFile;
+	return toReturn;
+}
+
+AbstractFile* createAbstractFileFromMemoryFileBuffer(void** buffer, size_t* size, size_t actualBufferSize) {
+	MemFileWrapperInfo* info;
+	AbstractFile* toReturn;
+	toReturn = (AbstractFile*) malloc(sizeof(AbstractFile));
+	
+	info = (MemFileWrapperInfo*) malloc(sizeof(MemFileWrapperInfo));
+	info->offset = 0;
+	info->buffer = buffer;
+	info->bufferSize = size;
+	info->actualBufferSize = actualBufferSize;
+
+	toReturn->data = info;
+	toReturn->read = memFileRead;
+	toReturn->write = memFileWrite;
+	toReturn->seek = memFileSeek;
+	toReturn->tell = memFileTell;
+	toReturn->getLength = memFileGetLength;
+	toReturn->close = memFileClose;
+	toReturn->type = AbstractFileTypeMemFile;
+	return toReturn;
+}
+

dump-imessages/iphone-dataprotection/emf_decrypter/common/base64.c

@@ -0,0 +1,183 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <dmg/dmg.h>
+
+unsigned char* decodeBase64(char* toDecode, size_t* dataLength) {
+  uint8_t buffer[4];
+  uint8_t charsInBuffer;
+  unsigned char* curChar;
+  unsigned char* decodeBuffer;
+  unsigned int decodeLoc;
+  unsigned int decodeBufferSize;
+  uint8_t bytesToDrop;
+  
+  curChar = (unsigned char*) toDecode;
+  charsInBuffer = 0;
+  
+  decodeBufferSize = 100;
+  decodeLoc = 0;
+  decodeBuffer = (unsigned char*) malloc(decodeBufferSize);
+  
+  bytesToDrop = 0;
+  
+  while((*curChar) != '\0') {
+    if((*curChar) >= 'A' && (*curChar) <= 'Z') {
+      buffer[charsInBuffer] = (*curChar) - 'A';
+      charsInBuffer++;
+    }
+    
+    if((*curChar) >= 'a' && (*curChar) <= 'z') {
+      buffer[charsInBuffer] = ((*curChar) - 'a') + ('Z' - 'A' + 1);
+      charsInBuffer++;
+    }
+    
+    if((*curChar) >= '0' && (*curChar) <= '9') {
+      buffer[charsInBuffer] = ((*curChar) - '0') + ('Z' - 'A' + 1)  + ('z' - 'a' + 1);
+      charsInBuffer++;
+    }
+    
+    if((*curChar) == '+') {
+      buffer[charsInBuffer] = ('Z' - 'A' + 1)  + ('z' - 'a' + 1)  + ('9' - '0' + 1);
+      charsInBuffer++;
+    }
+    
+    if((*curChar) == '/') {
+      buffer[charsInBuffer] = ('Z' - 'A' + 1)  + ('z' - 'a' + 1)  + ('9' - '0' + 1) + 1;
+      charsInBuffer++;
+    }
+    
+    if((*curChar) == '=') {
+      bytesToDrop++;
+    }
+    
+    if(charsInBuffer == 4) {
+      charsInBuffer = 0;
+      
+      if((decodeLoc + 3) >= decodeBufferSize) {
+        decodeBufferSize <<= 1;
+        decodeBuffer = (unsigned char*) realloc(decodeBuffer, decodeBufferSize);
+      }
+      decodeBuffer[decodeLoc] = ((buffer[0] << 2) & 0xFC) + ((buffer[1] >> 4) & 0x3F);
+      decodeBuffer[decodeLoc + 1] = ((buffer[1] << 4) & 0xF0) + ((buffer[2] >> 2) & 0x0F);
+      decodeBuffer[decodeLoc + 2] = ((buffer[2] << 6) & 0xC0) + (buffer[3] & 0x3F);
+      
+      decodeLoc += 3;
+      buffer[0] = 0;
+      buffer[1] = 0;
+      buffer[2] = 0;
+      buffer[3] = 0;
+    }
+
+    curChar++;
+  }
+  
+  if(bytesToDrop != 0) {  
+    if((decodeLoc + 3) >= decodeBufferSize) {
+      decodeBufferSize <<= 1;
+      decodeBuffer = (unsigned char*) realloc(decodeBuffer, decodeBufferSize);
+    }
+    
+    decodeBuffer[decodeLoc] = ((buffer[0] << 2) & 0xFC) | ((buffer[1] >> 4) & 0x3F);
+    
+    if(bytesToDrop <= 2)
+      decodeBuffer[decodeLoc + 1] = ((buffer[1] << 4) & 0xF0) | ((buffer[2] >> 2) & 0x0F);
+      
+    if(bytesToDrop <= 1)
+      decodeBuffer[decodeLoc + 2] = ((buffer[2] << 6) & 0xC0) | (buffer[3] & 0x3F);
+    
+    *dataLength = decodeLoc + 3 - bytesToDrop;
+  } else {
+    *dataLength = decodeLoc;
+  }
+  
+  return decodeBuffer;
+}
+
+void writeBase64(AbstractFile* file, unsigned char* data, size_t dataLength, int tabLength, int width) {
+  char* buffer;
+  buffer = convertBase64(data, dataLength, tabLength, width);
+  file->write(file, buffer, strlen(buffer));
+  free(buffer);
+}
+
+#define CHECK_BUFFER_SIZE() \
+    if(pos == bufferSize) { \
+      bufferSize <<= 1; \
+      buffer = (unsigned char*) realloc(buffer, bufferSize); \
+    }
+
+#define CHECK_LINE_END_STRING() \
+    CHECK_BUFFER_SIZE() \
+    if(width == lineLength) { \
+      buffer[pos++] = '\n'; \
+      CHECK_BUFFER_SIZE() \
+      for(j = 0; j < tabLength; j++) { \
+        buffer[pos++] = '\t'; \
+        CHECK_BUFFER_SIZE() \
+      } \
+      lineLength = 0; \
+    } else { \
+      lineLength++; \
+    }
+
+char* convertBase64(unsigned char* data, size_t dataLength, int tabLength, int width) {
+  const char* dictionary = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+  
+  unsigned char* buffer;
+  size_t pos;
+  size_t bufferSize;
+  int i, j;
+  int lineLength;
+  
+  bufferSize = 100;
+  buffer = (unsigned char*) malloc(bufferSize);
+  pos = 0;
+  lineLength = 0;
+   
+  for(i = 0; i < tabLength; i++) {
+    CHECK_BUFFER_SIZE()
+    buffer[pos++] = '\t';
+  }
+  i = 0;
+  while(dataLength >= 3) {
+    dataLength -= 3;
+    buffer[pos++] = dictionary[(data[i] >> 2) & 0x3F];
+    CHECK_LINE_END_STRING();
+    buffer[pos++] = dictionary[(((data[i] << 4) & 0x30) | ((data[i+1] >> 4) & 0x0F)) & 0x3F];
+    CHECK_LINE_END_STRING();
+    buffer[pos++] = dictionary[(((data[i+1] << 2) & 0x3C) | ((data[i+2] >> 6) & 0x03)) & 0x03F];
+    CHECK_LINE_END_STRING();
+    buffer[pos++] = dictionary[data[i+2] & 0x3F];
+    CHECK_LINE_END_STRING();
+    i += 3;
+  }
+
+  if(dataLength == 2) {
+    buffer[pos++] = dictionary[(data[i] >> 2) & 0x3F];
+    CHECK_LINE_END_STRING();
+    buffer[pos++] = dictionary[(((data[i] << 4) & 0x30) | ((data[i+1] >> 4) & 0x0F)) & 0x3F];
+    CHECK_LINE_END_STRING();
+    buffer[pos++