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main.cpp
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main.cpp
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/*
* Copyright (c) 2016, 2017, Yutaka Tsutano
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "axmldec_config.hpp"
#include "jitana/util/axml_parser.hpp"
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
#include <boost/program_options.hpp>
#include <unzip.h>
namespace boost_pt = boost::property_tree;
struct membuf : std::streambuf {
membuf(const char* base, size_t size)
{
char* p(const_cast<char*>(base));
this->setg(p, p, p + size);
}
};
struct imemstream : virtual membuf, std::istream {
imemstream(char const* base, size_t size)
: membuf(base, size),
std::istream(static_cast<std::streambuf*>(this))
{
}
};
std::vector<char> extract_manifest(const std::string& input_filename)
{
auto* apk = unzOpen(input_filename.c_str());
if (apk == nullptr) {
throw std::runtime_error("not an APK file");
}
if (unzLocateFile(apk, "AndroidManifest.xml", 0) != UNZ_OK) {
unzClose(apk);
throw std::runtime_error("AndroidManifest.xml is not found in APK");
}
if (unzOpenCurrentFile(apk) != UNZ_OK) {
unzClose(apk);
throw std::runtime_error("failed to open AndroidManifest.xml in APK");
}
unz_file_info64 info;
if (unzGetCurrentFileInfo64(apk, &info, nullptr, 0, nullptr, 0, nullptr, 0)
!= UNZ_OK) {
unzCloseCurrentFile(apk);
unzClose(apk);
throw std::runtime_error("failed to open AndroidManifest.xml in APK");
}
std::vector<char> content(info.uncompressed_size);
constexpr size_t read_size = 1 << 15;
for (size_t offset = 0;; offset += read_size) {
int len = unzReadCurrentFile(apk, content.data() + offset, read_size);
if (len == 0) {
break;
}
else if (len < 0) {
unzCloseCurrentFile(apk);
unzClose(apk);
throw std::runtime_error(
"failed to read AndroidManifest.xml in APK");
}
}
unzCloseCurrentFile(apk);
unzClose(apk);
return content;
}
void write_xml(const std::string& output_filename, const boost_pt::ptree& pt)
{
// Construct the output stream.
std::ostream* os = &std::cout;
std::ofstream ofs;
if (!output_filename.empty()) {
ofs.open(output_filename);
os = &ofs;
}
// Write the ptree to the output.
{
#if BOOST_MAJOR_VERSION == 1 && BOOST_MINOR_VERSION < 56
boost_pt::xml_writer_settings<char> settings(' ', 2);
#else
boost_pt::xml_writer_settings<std::string> settings(' ', 2);
#endif
boost_pt::write_xml(*os, pt, settings);
}
}
void process_file(const std::string& input_filename,
const std::string& output_filename)
{
// Property tree for storing the XML content.
boost_pt::ptree pt;
// Load the XML into ptree.
std::ifstream ifs(input_filename, std::ios::binary);
if (ifs.peek() == 'P') {
auto content = extract_manifest(input_filename);
imemstream ims(content.data(), content.size());
jitana::read_axml(ims, pt);
}
else if (ifs.peek() == 0x03) {
jitana::read_axml(ifs, pt);
}
else {
boost_pt::read_xml(ifs, pt, boost_pt::xml_parser::trim_whitespace);
}
// Write the tree as an XML file.
write_xml(output_filename, pt);
}
int main(int argc, char** argv)
{
namespace po = boost::program_options;
// Declare command line argument options.
po::options_description desc("Allowed options");
desc.add_options()("help", "Display available options")(
"version", "Display version number")(
"input-file,i", po::value<std::string>(), "Input file")(
"output-file,o", po::value<std::string>(), "Output file");
po::positional_options_description p;
p.add("input-file", -1);
try {
// Process the command line arguments.
po::variables_map vmap;
po::store(po::command_line_parser(argc, argv)
.options(desc)
.positional(p)
.run(),
vmap);
po::notify(vmap);
if (vmap.count("version")) {
// Print version and quit.
std::cout << "axmldec ";
std::cout << AXMLDEC_VERSION_MAJOR;
std::cout << "." << AXMLDEC_VERSION_MINOR;
std::cout << "." << AXMLDEC_VERSION_PATCH;
std::cout << " (" << AXMLDEC_BUILD_TIMESTAMP << ")\n";
std::cout << "Copyright (C) 2017 Yutaka Tsutano.\n";
return 0;
}
if (vmap.count("help") || !vmap.count("input-file")) {
// Print help and quit.
std::cout << "Usage: axmldec [options] <input_file>\n\n";
std::cout << desc << "\n";
return 0;
}
if (vmap.count("input-file")) {
auto input_filename = vmap["input-file"].as<std::string>();
auto output_filename = vmap.count("output-file")
? vmap["output-file"].as<std::string>()
: "";
// Process the file.
process_file(input_filename, output_filename);
}
}
catch (std::ios::failure& e) {
std::cerr << "error: failed to open the input file\n";
return 1;
}
catch (std::exception& e) {
std::cerr << "error: " << e.what() << "\n";
return 1;
}
}