Replace PatcheLF With LIEF
parent
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commit
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@ -0,0 +1,39 @@
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project(LIEF)
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# Silence Warnings
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add_compile_options(-w -Wno-psabi)
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## LIEF
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# Options
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set(BUILD_SHARED_LIBS TRUE CACHE BOOL "" FORCE)
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set(LIEF_C_API FALSE CACHE BOOL "" FORCE)
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set(LIEF_EXAMPLES FALSE CACHE BOOL "" FORCE)
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set(LIEF_PYTHON_API FALSE CACHE BOOL "" FORCE)
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set(LIEF_TESTS FALSE CACHE BOOL "" FORCE)
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set(LIEF_USE_CCACHE FALSE CACHE BOOL "" FORCE)
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set(LIEF_LOGGING FALSE CACHE BOOL "" FORCE)
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set(LIEF_LOGGING_DEBUG FALSE CACHE BOOL "" FORCE)
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set(LIEF_ENABLE_JSON FALSE CACHE BOOL "" FORCE)
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set(LIEF_ELF TRUE CACHE BOOL "" FORCE)
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set(LIEF_PE FALSE CACHE BOOL "" FORCE)
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set(LIEF_MACHO FALSE CACHE BOOL "" FORCE)
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set(LIEF_DEX FALSE CACHE BOOL "" FORCE)
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set(LIEF_ART FALSE CACHE BOOL "" FORCE)
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set(LIEF_OAT FALSE CACHE BOOL "" FORCE)
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set(LIEF_VDEX FALSE CACHE BOOL "" FORCE)
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# Download
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add_subdirectory(src EXCLUDE_FROM_ALL)
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# Ensure Build
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add_custom_target(LIEF-build ALL DEPENDS LIB_LIEF)
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# Install
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install(TARGETS LIB_LIEF DESTINATION "${MCPI_LIB_DIR}")
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if(BUILD_ARM_COMPONENTS)
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install(TARGETS LIB_LIEF EXPORT sdk DESTINATION "${MCPI_SDK_LIB_DIR}")
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endif()
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# License
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install(FILES src/LICENSE DESTINATION "${MCPI_LEGAL_DIR}/LIEF")
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@ -0,0 +1 @@
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Subproject commit c7b3ce3b2ce6917855a72709f73ef6d00b50e1f7
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@ -1,4 +0,0 @@
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project(launcher-dependencies)
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# PatchELF
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add_subdirectory(patchelf)
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@ -1,17 +0,0 @@
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project(patchelf)
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# Silence Warnings
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add_compile_options(-w)
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## PatchELF
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# Build
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add_executable(patchelf src/src/patchelf.cc)
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target_compile_definitions(patchelf PRIVATE -D_FILE_OFFSET_BITS=64)
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set_target_properties(patchelf PROPERTIES CXX_STANDARD 17)
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# Install
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install(TARGETS patchelf DESTINATION "${MCPI_BIN_DIR}")
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# License
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install(FILES src/COPYING DESTINATION "${MCPI_LEGAL_DIR}/patchelf")
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@ -1 +0,0 @@
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Subproject commit c2b419dc2a0d6095eaa69b65ad5854ce847bdd01
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@ -1,136 +0,0 @@
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <libreborn/libreborn.h>
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#include "bootstrap.h"
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#include "patchelf.h"
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// Duplicate MCPI Executable Into /tmp
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static void duplicate_mcpi_executable(const char *original_path, char *new_path) {
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// Ensure Temporary Directory
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{
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// Check If It Exists
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struct stat tmp_stat;
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int exists = stat(MCPI_PATCHED_DIR, &tmp_stat) != 0 ? 0 : S_ISDIR(tmp_stat.st_mode);
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if (!exists) {
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// Doesn't Exist
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if (mkdir(MCPI_PATCHED_DIR, S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
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ERR("Unable To Create Temporary Folder: %s", strerror(errno));
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}
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}
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}
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// Generate New File
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int new_file_fd = mkstemp(new_path);
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if (new_file_fd == -1) {
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ERR("Unable To Create Temporary File: %s", strerror(errno));
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}
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FILE *new_file = fdopen(new_file_fd, "wb");
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if (new_file == NULL) {
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ERR("Unable To Open Temporary File: %s", strerror(errno));
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}
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// Copy Original File
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{
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// Open Original File
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FILE *original_file = fopen(original_path, "rb");
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if (original_file == NULL) {
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ERR("Unable To Open File: %s", original_path);
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}
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// Copy
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#define BUFFER_SIZE 1024
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char buf[BUFFER_SIZE];
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size_t bytes_read = 0;
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while ((bytes_read = fread((void *) buf, 1, BUFFER_SIZE, original_file)) > 0) {
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fwrite((void *) buf, 1, bytes_read, new_file);
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if (ferror(new_file) != 0) {
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ERR("Unable To Write File: %s", new_path);
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}
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}
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if (ferror(original_file) != 0) {
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ERR("Unable To Read File: %s", original_path);
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}
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// Close Original File
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fclose(original_file);
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}
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// Close New File
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fclose(new_file);
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close(new_file_fd);
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}
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// Fix MCPI Dependencies
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#define patch_mcpi_elf_dependencies_with_extra_patchelf_args(...) \
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({ \
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const char *const _macro_command[] = { \
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"patchelf", \
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##__VA_ARGS__, \
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"--remove-needed", "libbcm_host.so", \
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"--remove-needed", "libX11.so.6", \
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"--remove-needed", "libEGL.so", \
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"--remove-needed", "libGLESv2.so", \
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"--remove-needed", "libSDL-1.2.so.0", \
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"--add-needed", "libmedia-layer-core.so", \
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new_path, \
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NULL \
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}; \
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int _macro_return_code = 0; \
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char *_macro_output = run_command(_macro_command, &_macro_return_code); \
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if (_macro_output != NULL) { \
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free(_macro_output); \
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} \
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_macro_return_code; \
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})
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void patch_mcpi_elf_dependencies(const char *original_path, char *new_path, const char *linker) {
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// Duplicate MCPI executable into /tmp so it can be modified.
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duplicate_mcpi_executable(original_path, new_path);
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// Run patchelf
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int return_code;
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if (linker == NULL) {
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return_code = patch_mcpi_elf_dependencies_with_extra_patchelf_args();
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} else {
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return_code = patch_mcpi_elf_dependencies_with_extra_patchelf_args("--set-interpreter", linker);
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}
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if (!is_exit_status_success(return_code)) {
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char *exit_status_line = NULL;
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get_exit_status_string(return_code, &exit_status_line);
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ERR("patchelf Failed%s", exit_status_line);
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}
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// Fix Permissions
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if (chmod(new_path, S_IRUSR | S_IXUSR) != 0) {
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ERR("Unable To Set File Permissions: %s: %s", new_path, strerror(errno));
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}
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}
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// Get Interpreter
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char *patch_get_interpreter(const char *file) {
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// Run
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const char *const command[] = {
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"patchelf",
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"--print-interpreter",
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file,
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NULL
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};
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int return_code;
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char *output = run_command(command, &return_code);
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if (!is_exit_status_success(return_code)) {
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char *exit_status_line = NULL;
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get_exit_status_string(return_code, &exit_status_line);
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ERR("patchelf Failed%s", exit_status_line);
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}
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if (output != NULL) {
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// Trim
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int length = strlen(output);
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if (output[length - 1] == '\n') {
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output[length - 1] = '\0';
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}
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}
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// Return
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return output;
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}
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@ -0,0 +1,91 @@
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#include <cstdlib>
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#include <sys/stat.h>
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#include <LIEF/ELF.hpp>
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#include <libreborn/libreborn.h>
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#include "patchelf.h"
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// Duplicate MCPI Executable Into /tmp
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static void duplicate_mcpi_executable(char *new_path) {
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// Ensure Temporary Directory
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{
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// Check If It Exists
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struct stat tmp_stat;
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int exists = stat(MCPI_PATCHED_DIR, &tmp_stat) != 0 ? 0 : S_ISDIR(tmp_stat.st_mode);
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if (!exists) {
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// Doesn't Exist
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if (mkdir(MCPI_PATCHED_DIR, S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
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ERR("Unable To Create Temporary Folder: %s", strerror(errno));
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}
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}
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}
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// Generate New File
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int new_file_fd = mkstemp(new_path);
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if (new_file_fd == -1) {
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ERR("Unable To Create Temporary File: %s", strerror(errno));
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}
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close(new_file_fd);
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}
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// Fix MCPI Dependencies
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static const char *libraries_to_remove[] = {
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"libbcm_host.so",
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"libX11.so.6",
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"libEGL.so",
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"libGLESv2.so",
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"libSDL-1.2.so.0"
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};
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static const char *libraries_to_add[] = {
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"libmedia-layer-core.so"
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};
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void patch_mcpi_elf_dependencies(const char *original_path, char *new_path, const char *linker) {
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// Duplicate MCPI executable into /tmp so it can be modified.
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duplicate_mcpi_executable(new_path);
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// Patch File
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{
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std::unique_ptr<LIEF::ELF::Binary> binary = LIEF::ELF::Parser::parse(original_path);
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if (linker != NULL) {
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binary->interpreter(linker);
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}
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for (size_t i = 0; i < (sizeof (libraries_to_remove) / sizeof (const char *)); i++) {
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binary->remove_library(libraries_to_remove[i]);
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}
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for (size_t i = 0; i < (sizeof (libraries_to_add) / sizeof (const char *)); i++) {
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binary->add_library(libraries_to_add[i]);
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}
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LIEF::ELF::Builder builder{*binary};
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builder.build();
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builder.write(new_path);
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}
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// Fix Permissions
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if (chmod(new_path, S_IRUSR | S_IXUSR) != 0) {
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ERR("Unable To Set File Permissions: %s: %s", new_path, strerror(errno));
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}
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}
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// Get Interpreter
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static int dl_iterate_callback(struct dl_phdr_info *info, __attribute__((unused)) size_t size, void *data) {
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// Only Search Current Program
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if (strcmp(info->dlpi_name, "") == 0) {
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for (int i = 0; i < info->dlpi_phnum; i++) {
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if (info->dlpi_phdr[i].p_type == PT_INTERP) {
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// Callback
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*(char **) data = (char *) info->dlpi_phdr[i].p_vaddr;
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}
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}
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}
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return 0;
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}
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char *patch_get_interpreter() {
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char *interpreter = NULL;
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dl_iterate_phdr(dl_iterate_callback, &interpreter);
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if (interpreter != NULL) {
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interpreter = strdup(interpreter);
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}
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return interpreter;
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}
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