d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
231 lines
7.8 KiB
C++
231 lines
7.8 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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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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