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230 lines
7.7 KiB
C++
230 lines
7.7 KiB
C++
/*************************************************************************/
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/* lipo.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "lipo.h"
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bool LipO::is_lipo(const String &p_path) {
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Ref<FileAccess> fb = FileAccess::open(p_path, FileAccess::READ);
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ERR_FAIL_COND_V_MSG(fb.is_null(), false, vformat("LipO: Can't open file: \"%s\".", p_path));
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uint32_t magic = fb->get_32();
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return (magic == 0xbebafeca || magic == 0xcafebabe || magic == 0xbfbafeca || magic == 0xcafebabf);
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}
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bool LipO::create_file(const String &p_output_path, const PackedStringArray &p_files) {
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close();
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fa = FileAccess::open(p_output_path, FileAccess::WRITE);
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ERR_FAIL_COND_V_MSG(fa.is_null(), false, vformat("LipO: Can't open file: \"%s\".", p_output_path));
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uint64_t max_size = 0;
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for (int i = 0; i < p_files.size(); i++) {
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MachO mh;
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if (!mh.open_file(p_files[i])) {
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ERR_FAIL_V_MSG(false, vformat("LipO: Invalid MachO file: \"%s.\"", p_files[i]));
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}
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FatArch arch;
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arch.cputype = mh.get_cputype();
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arch.cpusubtype = mh.get_cpusubtype();
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arch.offset = 0;
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arch.size = mh.get_size();
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arch.align = mh.get_align();
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max_size += arch.size;
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archs.push_back(arch);
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Ref<FileAccess> fb = FileAccess::open(p_files[i], FileAccess::READ);
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if (fb.is_null()) {
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close();
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ERR_FAIL_V_MSG(false, vformat("LipO: Can't open file: \"%s.\"", p_files[i]));
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}
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}
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// Write header.
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bool is_64 = (max_size >= std::numeric_limits<uint32_t>::max());
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if (is_64) {
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fa->store_32(0xbfbafeca);
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} else {
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fa->store_32(0xbebafeca);
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}
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fa->store_32(BSWAP32(archs.size()));
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uint64_t offset = archs.size() * (is_64 ? 32 : 20) + 8;
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for (int i = 0; i < archs.size(); i++) {
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archs.write[i].offset = offset + PAD(offset, uint64_t(1) << archs[i].align);
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if (is_64) {
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fa->store_32(BSWAP32(archs[i].cputype));
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fa->store_32(BSWAP32(archs[i].cpusubtype));
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fa->store_64(BSWAP64(archs[i].offset));
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fa->store_64(BSWAP64(archs[i].size));
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fa->store_32(BSWAP32(archs[i].align));
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fa->store_32(0);
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} else {
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fa->store_32(BSWAP32(archs[i].cputype));
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fa->store_32(BSWAP32(archs[i].cpusubtype));
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fa->store_32(BSWAP32(archs[i].offset));
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fa->store_32(BSWAP32(archs[i].size));
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fa->store_32(BSWAP32(archs[i].align));
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}
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offset = archs[i].offset + archs[i].size;
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}
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// Write files and padding.
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for (int i = 0; i < archs.size(); i++) {
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Ref<FileAccess> fb = FileAccess::open(p_files[i], FileAccess::READ);
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if (fb.is_null()) {
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close();
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ERR_FAIL_V_MSG(false, vformat("LipO: Can't open file: \"%s.\"", p_files[i]));
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}
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uint64_t cur = fa->get_position();
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for (uint64_t j = cur; j < archs[i].offset; j++) {
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fa->store_8(0);
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}
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int pages = archs[i].size / 4096;
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int remain = archs[i].size % 4096;
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unsigned char step[4096];
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for (int j = 0; j < pages; j++) {
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uint64_t br = fb->get_buffer(step, 4096);
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if (br > 0) {
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fa->store_buffer(step, br);
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}
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}
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uint64_t br = fb->get_buffer(step, remain);
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if (br > 0) {
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fa->store_buffer(step, br);
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}
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}
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return true;
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}
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bool LipO::open_file(const String &p_path) {
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close();
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fa = FileAccess::open(p_path, FileAccess::READ);
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ERR_FAIL_COND_V_MSG(fa.is_null(), false, vformat("LipO: Can't open file: \"%s\".", p_path));
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uint32_t magic = fa->get_32();
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if (magic == 0xbebafeca) {
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// 32-bit fat binary, bswap.
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uint32_t nfat_arch = BSWAP32(fa->get_32());
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for (uint32_t i = 0; i < nfat_arch; i++) {
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FatArch arch;
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arch.cputype = BSWAP32(fa->get_32());
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arch.cpusubtype = BSWAP32(fa->get_32());
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arch.offset = BSWAP32(fa->get_32());
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arch.size = BSWAP32(fa->get_32());
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arch.align = BSWAP32(fa->get_32());
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archs.push_back(arch);
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}
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} else if (magic == 0xcafebabe) {
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// 32-bit fat binary.
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uint32_t nfat_arch = fa->get_32();
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for (uint32_t i = 0; i < nfat_arch; i++) {
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FatArch arch;
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arch.cputype = fa->get_32();
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arch.cpusubtype = fa->get_32();
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arch.offset = fa->get_32();
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arch.size = fa->get_32();
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arch.align = fa->get_32();
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archs.push_back(arch);
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}
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} else if (magic == 0xbfbafeca) {
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// 64-bit fat binary, bswap.
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uint32_t nfat_arch = BSWAP32(fa->get_32());
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for (uint32_t i = 0; i < nfat_arch; i++) {
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FatArch arch;
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arch.cputype = BSWAP32(fa->get_32());
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arch.cpusubtype = BSWAP32(fa->get_32());
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arch.offset = BSWAP64(fa->get_64());
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arch.size = BSWAP64(fa->get_64());
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arch.align = BSWAP32(fa->get_32());
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fa->get_32(); // Skip, reserved.
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archs.push_back(arch);
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}
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} else if (magic == 0xcafebabf) {
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// 64-bit fat binary.
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uint32_t nfat_arch = fa->get_32();
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for (uint32_t i = 0; i < nfat_arch; i++) {
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FatArch arch;
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arch.cputype = fa->get_32();
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arch.cpusubtype = fa->get_32();
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arch.offset = fa->get_64();
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arch.size = fa->get_64();
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arch.align = fa->get_32();
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fa->get_32(); // Skip, reserved.
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archs.push_back(arch);
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}
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} else {
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close();
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ERR_FAIL_V_MSG(false, vformat("LipO: Invalid fat binary: \"%s\".", p_path));
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}
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return true;
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}
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int LipO::get_arch_count() const {
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ERR_FAIL_COND_V_MSG(fa.is_null(), 0, "LipO: File not opened.");
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return archs.size();
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}
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bool LipO::extract_arch(int p_index, const String &p_path) {
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ERR_FAIL_COND_V_MSG(fa.is_null(), false, "LipO: File not opened.");
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ERR_FAIL_INDEX_V(p_index, archs.size(), false);
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Ref<FileAccess> fb = FileAccess::open(p_path, FileAccess::WRITE);
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ERR_FAIL_COND_V_MSG(fb.is_null(), false, vformat("LipO: Can't open file: \"%s\".", p_path));
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fa->seek(archs[p_index].offset);
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int pages = archs[p_index].size / 4096;
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int remain = archs[p_index].size % 4096;
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unsigned char step[4096];
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for (int i = 0; i < pages; i++) {
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uint64_t br = fa->get_buffer(step, 4096);
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if (br > 0) {
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fb->store_buffer(step, br);
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}
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}
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uint64_t br = fa->get_buffer(step, remain);
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if (br > 0) {
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fb->store_buffer(step, br);
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}
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return true;
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}
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void LipO::close() {
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archs.clear();
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}
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LipO::~LipO() {
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close();
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}
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