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superunpack.c
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superunpack.c
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/*
* Copyright (C) 2020 Munjeni
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "version.h"
#if (!defined(_WIN32)) && (!defined(WIN32))
#ifndef __USE_FILE_OFFSET64
#define __USE_FILE_OFFSET64 1
#endif
#ifndef __USE_LARGEFILE64
#define __USE_LARGEFILE64 1
#endif
#ifndef _LARGEFILE64_SOURCE
#define _LARGEFILE64_SOURCE 1
#endif
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#ifndef _FILE_OFFSET_BIT
#define _FILE_OFFSET_BIT 64
#endif
#endif
#ifdef _WIN32
#define __USE_MINGW_ANSI_STDIO 1
#include <windows.h>
#include <setupapi.h>
#include <initguid.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#ifdef HAS_STDINT_H
#include <stdint.h>
#endif
#include <stdbool.h>
#ifdef unix
#include <unistd.h>
#include <sys/types.h>
#endif
#ifdef _WIN32
#include <direct.h>
#include <io.h>
#endif
#if defined(USE_FILE32API)
#define fopen64 fopen
#define ftello64 ftell
#define fseeko64 fseek
#else
#ifdef __FreeBSD__
#define fopen64 fopen
#define ftello64 ftello
#define fseeko64 fseeko
#endif
/*#ifdef __ANDROID__
#define fopen64 fopen
#define ftello64 ftello
#define fseeko64 fseeko
#endif*/
#ifdef _MSC_VER
#define fopen64 fopen
#if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
#define ftello64 _ftelli64
#define fseeko64 _fseeki64
#else /* old msc */
#define ftello64 ftell
#define fseeko64 fseek
#endif
#endif
#endif
#include <ctype.h>
#include <sys/stat.h>
#include <limits.h>
#include <time.h>
#include <dirent.h>
#include <assert.h>
#if !defined(_WIN32) && !defined(__APPLE__)
#include <linux/usbdevice_fs.h>
#include <linux/usb/ch9.h>
#include <asm/byteorder.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <ctype.h>
#endif
#ifdef __APPLE__
#include <unistd.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/usb/IOUSBLib.h>
#include <mach/mach.h>
#define fseeko64 fseeko
#define ftello64 ftello
#define fopen64 fopen
#endif
#include "metadata_format.h"
#define EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS 0x4000
void fread_unus_res(void *ptr, size_t size, size_t nmemb, FILE *stream) {
size_t in;
in = fread(ptr, size, nmemb, stream);
if (in) {
/* satisfy warn unused result */
}
}
int main(int argc, char *argv[])
{
LpMetadataGeometry geometry;
LpMetadataHeader header;
unsigned char i;
unsigned char progress;
unsigned long long pos;
FILE *rom = NULL;
bool make_rw = false;
int ret = 0;
char temp[0x500];
unsigned long long ext4_file_size;
printf("---------------------------------------------------------\n");
printf("Super image unpacker v_%d by munjeni @ xda 2020)\n", VERSION);
printf("---------------------------------------------------------\n");
if (argc < 2)
{
printf("Usage:\n%s superimage\n", argv[0]);
printf("or to extract as a RW:\n%s superimage 1\n", argv[0]);
#ifdef _WIN32
printf("Or drag and drop superimage to %s\n", argv[0]);
#endif
printf("\n");
goto die;
}
rom = fopen64(argv[1], "rb");
if (rom == NULL)
{
printf("Unable to open %s!\n", argv[1]);
ret = -1;
goto die;
}
if (argc == 3)
{
if (memcmp(argv[2], "1", 1) == 0)
{
printf("Dumping all partitions to RW mode!\n");
make_rw = true;
}
}
fseeko64(rom, LP_PARTITION_RESERVED_BYTES, SEEK_SET);
fread_unus_res(&geometry, sizeof(struct LpMetadataGeometry), 1, rom);
if (geometry.magic != LP_METADATA_GEOMETRY_MAGIC)
{
printf("\nThis is not super image!\n");
fclose(rom);
ret = -1;
goto die;
}
printf("\n");
printf("LpMetadataGeometry magic = 0x%x\n", geometry.magic);
printf("LpMetadataGeometry struct size = 0x%x\n", geometry.struct_size);
printf("LpMetadataGeometry sha256 = ");
for (i=0; i<32; ++i)
printf("%02X", geometry.checksum[i] & 0xff);
printf("\n");
printf("LpMetadataGeometry metadata_max_size = 0x%x\n", geometry.metadata_max_size);
printf("LpMetadataGeometry metadata_slot_count = 0x%x\n", geometry.metadata_slot_count);
printf("LpMetadataGeometry logical_block_size = 0x%x\n", geometry.logical_block_size);
/* ---------------------------------------------------------- */
fseeko64(rom, LP_PARTITION_RESERVED_BYTES * 3, SEEK_SET);
fread_unus_res(&header, sizeof(struct LpMetadataHeader), 1, rom);
if (header.magic != LP_METADATA_HEADER_MAGIC)
{
printf("\nWrong LpMetadataHeader magic!\n");
fclose(rom);
ret = -1;
goto die;
}
if (header.major_version != LP_METADATA_MAJOR_VERSION)
{
printf("\nlp metadata major version %d is incompatible with tool lp metadata major version %d!\n", header.major_version, LP_METADATA_MAJOR_VERSION);
fclose(rom);
ret = -1;
goto die;
}
if (header.minor_version > LP_METADATA_MINOR_VERSION_MAX)
{
printf("\nlp metadata minor version %d is greater than tool lp metadata minor max version %d!\n", header.minor_version, LP_METADATA_MINOR_VERSION_MAX);
fclose(rom);
ret = -1;
goto die;
}
printf("\n");
printf("LpMetadataHeader magic = 0x%x\n", header.magic);
printf("LpMetadataHeader major_version = %d\n", header.major_version);
printf("LpMetadataHeader minor_version = %d\n", header.minor_version);
printf("LpMetadataHeader header_size = 0x%x\n", header.header_size);
printf("LpMetadataHeader header sha256 = ");
for (i=0; i<32; ++i)
printf("%02X", header.header_checksum[i] & 0xff);
printf("\n");
printf("LpMetadataHeader tables_size = 0x%x\n", header.tables_size);
printf("LpMetadataHeader tables sha256 = ");
for (i=0; i<32; ++i)
printf("%02X", header.tables_checksum[i] & 0xff);
printf("\n");
printf("LpMetadataHeader partitions offset = 0x%x\n", header.partitions.offset);
printf("LpMetadataHeader partitions num_entries = 0x%x\n", header.partitions.num_entries);
printf("LpMetadataHeader partitions entry_size = 0x%x\n", header.partitions.entry_size);
printf("LpMetadataHeader extents offset = 0x%x\n", header.extents.offset);
printf("LpMetadataHeader extents num_entries = 0x%x\n", header.extents.num_entries);
printf("LpMetadataHeader extents entry_size = 0x%x\n", header.extents.entry_size);
printf("LpMetadataHeader groups offset = 0x%x\n", header.groups.offset);
printf("LpMetadataHeader groups num_entries = 0x%x\n", header.groups.num_entries);
printf("LpMetadataHeader groups entry_size = 0x%x\n", header.groups.entry_size);
printf("LpMetadataHeader block_devices offset = 0x%x\n", header.block_devices.offset);
printf("LpMetadataHeader block_devices num_entries = 0x%x\n", header.block_devices.num_entries);
printf("LpMetadataHeader block_devices entry_size = 0x%x\n", header.block_devices.entry_size);
/* ---------------------------------------------------------- */
printf("\nPartitions = %d used, %d not used, total %d\n", header.extents.num_entries, (header.partitions.num_entries - header.extents.num_entries), header.partitions.num_entries);
for (i=0; i < header.partitions.num_entries; ++i)
{
LpMetadataPartition partition;
LpMetadataPartitionGroup partition_group;
ext4_file_size = 0LL;
pos = 0LL;
progress = 0;
memset(temp, 0, sizeof(temp));
fseeko64(rom, (LP_PARTITION_RESERVED_BYTES * 3) + header.header_size + header.partitions.offset + (i * header.partitions.entry_size), SEEK_SET);
fread_unus_res(&partition, sizeof(struct LpMetadataPartition), 1, rom);
fseeko64(rom, (LP_PARTITION_RESERVED_BYTES * 3) + header.header_size + header.groups.offset + (partition.group_index * header.groups.entry_size), SEEK_SET);
fread_unus_res(&partition_group, sizeof(struct LpMetadataPartitionGroup), 1, rom);
printf("\n partition_%d_name = %s%s\n", (i+1), partition.name, (partition.num_extents == 0) ? " (unused)" : "");
printf(" attributes = 0x%x\n", partition.attributes);
printf(" first_extent_index = 0x%x\n", partition.first_extent_index);
printf(" num_extents = 0x%x\n", partition.num_extents);
printf(" group_index = 0x%x\n", partition.group_index);
printf(" partition_group = %s\n", partition_group.name);
if (partition.num_extents > 0)
{
LpMetadataExtent extent;
fseeko64(rom, (LP_PARTITION_RESERVED_BYTES * 3) + header.header_size + header.extents.offset + (partition.first_extent_index * header.extents.entry_size), SEEK_SET);
fread_unus_res(&extent, sizeof(struct LpMetadataExtent), 1, rom);
printf(" extent num_sectors = 0x%llx (0x%llx bytes total)\n", extent.num_sectors, (extent.num_sectors * 512));
printf(" extent target_type = 0x%x\n", extent.target_type);
printf(" extent target_data = 0x%llx (dumping offset = 0x%llx)\n", extent.target_data, (extent.target_data * 512));
printf(" extent target_source = 0x%x\n", extent.target_source);
char *outname = (char *)malloc(64);
if (outname == NULL)
{
printf("Unable to malloc 64 bytes for filename!\n");
fclose(rom);
ret = -1;
goto die;
}
fseeko64(rom, (extent.target_data * 512), SEEK_SET);
fread_unus_res(temp, sizeof(temp), 1, rom);
if (memcmp(temp, "\x7f\x45\x4c\x46", 4) == 0)
{
printf(" Filetype ELF.\n");
snprintf(outname, 64, "%s.elf", partition.name);
}
else if (memcmp(temp+0x438, "\x53\xef", 2) == 0)
{
memcpy(&ext4_file_size, temp+0x404, sizeof(unsigned long long));
ext4_file_size *= 4096;
printf(" Filetype EXT4. EXT4 size = 0x%llx\n", ext4_file_size);
snprintf(outname, 64, "%s.ext4", partition.name);
}
else if (memcmp(temp, "\xeb\x3c\x90", 3) == 0)
{
printf(" Filetype VFAT.\n");
snprintf(outname, 64, "%s.vfat", partition.name);
}
else if (memcmp(temp, "\x41\x4e\x44\x52", 4) == 0)
{
printf(" Filetype IMG.\n");
snprintf(outname, 64, "%s.img", partition.name);
}
else
{
printf(" Filetype BIN.\n");
snprintf(outname, 64, "%s.bin", partition.name);
}
printf(" Dumping %s%s ...\n ", outname, make_rw ? " to RW mode" : "");
FILE *out = fopen64(outname, "wb");
if (out == NULL)
{
printf("Unable to open %s for write!\n", outname);
free(outname);
fclose(rom);
ret = -1;
goto die;
}
fseeko64(rom, (extent.target_data * 512), SEEK_SET);
while(1)
{
if (fread(temp, 512, 1, rom) != 1)
{
printf("Error reading 512 bytes!\n");
free(outname);
fclose(out);
fclose(rom);
ret = -1;
goto die;
}
if (!feof(rom) && (pos < (extent.num_sectors * 512)))
{
if (ext4_file_size)
{
if (pos >= ext4_file_size)
break;
}
if (fwrite(temp, 512, 1, out) != 1)
{
printf("Error writing 512 bytes!\n");
free(outname);
fclose(out);
fclose(rom);
ret = -1;
goto die;
}
}
else
{
break;
}
pos += 512;
if ((pos % 8388608ULL) == 0)
{
progress += 1;
printf(".");
if (progress == 52) {
progress = 0;
printf("\n ");
}
}
}
if (ext4_file_size)
{
unsigned int s_feature_ro_compat = 0;
if (ftello64(out) <= ext4_file_size)
{
char nn[1];
memset(nn, 0, sizeof(nn));
fseeko64(out, ext4_file_size - 1, SEEK_SET);
fread_unus_res(nn, 1, 1, out);
fseeko64(out, ext4_file_size - 1, SEEK_SET);
fwrite(nn, 1, 1, out);
}
if (make_rw)
{
fseeko64(out, 0x464, SEEK_SET);
fread_unus_res(&s_feature_ro_compat, sizeof(unsigned int), 1, out);
s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS;
fseeko64(out, 0x464, SEEK_SET);
fwrite(&s_feature_ro_compat, sizeof(unsigned int), 1, out);
}
}
free(outname);
fclose(out);
}
else
{
printf(" extent num_sectors = NULL\n");
printf(" extent target_type = NULL\n");
printf(" extent target_data = NULL\n");
printf(" extent target_source = NULL\n");
printf(" Skipping dump.\n");
}
}
fclose(rom);
die:
#ifdef _WIN32
system("pause");
#endif
return ret;
}