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/*************************************************************************/
/* export.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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/io/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.instantiate();
Ref<Image> img = memnew(Image(_linuxbsd_logo));
Ref<ImageTexture> logo;
logo.instantiate();
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("LinuxBSD");
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;
}
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