diff options
Diffstat (limited to 'platform/linuxbsd/export/export.cpp')
| -rw-r--r-- | platform/linuxbsd/export/export.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/platform/linuxbsd/export/export.cpp b/platform/linuxbsd/export/export.cpp new file mode 100644 index 0000000000..53e3ce8f85 --- /dev/null +++ b/platform/linuxbsd/export/export.cpp @@ -0,0 +1,169 @@ +/*************************************************************************/ +/* export.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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 "export.h" + +#include "core/os/file_access.h" +#include "editor/editor_export.h" +#include "platform/linuxbsd/logo.gen.h" +#include "scene/resources/texture.h" + +static Error fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size); + +void register_linuxbsd_exporter() { + + Ref<EditorExportPlatformPC> platform; + platform.instance(); + + Ref<Image> img = memnew(Image(_linuxbsd_logo)); + Ref<ImageTexture> logo; + logo.instance(); + logo->create_from_image(img); + platform->set_logo(logo); + platform->set_name("Linux/X11"); + platform->set_extension("x86"); + platform->set_extension("x86_64", "binary_format/64_bits"); + platform->set_release_32("linux_x11_32_release"); + platform->set_debug_32("linux_x11_32_debug"); + platform->set_release_64("linux_x11_64_release"); + platform->set_debug_64("linux_x11_64_debug"); + platform->set_os_name("X11"); + platform->set_chmod_flags(0755); + platform->set_fixup_embedded_pck_func(&fixup_embedded_pck); + + EditorExport::get_singleton()->add_export_platform(platform); +} + +static Error fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size) { + + // Patch the header of the "pck" section in the ELF file so that it corresponds to the embedded data + + FileAccess *f = FileAccess::open(p_path, FileAccess::READ_WRITE); + if (!f) { + return ERR_CANT_OPEN; + } + + // Read and check ELF magic number + { + uint32_t magic = f->get_32(); + if (magic != 0x464c457f) { // 0x7F + "ELF" + f->close(); + return ERR_FILE_CORRUPT; + } + } + + // Read program architecture bits from class field + + int bits = f->get_8() * 32; + + if (bits == 32 && p_embedded_size >= 0x100000000) { + f->close(); + ERR_FAIL_V_MSG(ERR_INVALID_DATA, "32-bit executables cannot have embedded data >= 4 GiB."); + } + + // Get info about the section header table + + int64_t section_table_pos; + int64_t section_header_size; + if (bits == 32) { + section_header_size = 40; + f->seek(0x20); + section_table_pos = f->get_32(); + f->seek(0x30); + } else { // 64 + section_header_size = 64; + f->seek(0x28); + section_table_pos = f->get_64(); + f->seek(0x3c); + } + int num_sections = f->get_16(); + int string_section_idx = f->get_16(); + + // Load the strings table + uint8_t *strings; + { + // Jump to the strings section header + f->seek(section_table_pos + string_section_idx * section_header_size); + + // Read strings data size and offset + int64_t string_data_pos; + int64_t string_data_size; + if (bits == 32) { + f->seek(f->get_position() + 0x10); + string_data_pos = f->get_32(); + string_data_size = f->get_32(); + } else { // 64 + f->seek(f->get_position() + 0x18); + string_data_pos = f->get_64(); + string_data_size = f->get_64(); + } + + // Read strings data + f->seek(string_data_pos); + strings = (uint8_t *)memalloc(string_data_size); + if (!strings) { + f->close(); + return ERR_OUT_OF_MEMORY; + } + f->get_buffer(strings, string_data_size); + } + + // Search for the "pck" section + + bool found = false; + for (int i = 0; i < num_sections; ++i) { + + int64_t section_header_pos = section_table_pos + i * section_header_size; + f->seek(section_header_pos); + + uint32_t name_offset = f->get_32(); + if (strcmp((char *)strings + name_offset, "pck") == 0) { + // "pck" section found, let's patch! + + if (bits == 32) { + f->seek(section_header_pos + 0x10); + f->store_32(p_embedded_start); + f->store_32(p_embedded_size); + } else { // 64 + f->seek(section_header_pos + 0x18); + f->store_64(p_embedded_start); + f->store_64(p_embedded_size); + } + + found = true; + break; + } + } + + memfree(strings); + f->close(); + + return found ? OK : ERR_FILE_CORRUPT; +} |