mirror of
https://github.com/libretro/ppsspp.git
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112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
// Copyright (c) 2013- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include <fstream>
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#include <string>
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#include <cstring>
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#include "Common/Log.h"
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#include "Common/FileUtil.h"
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#include "Core/ELF/PBPReader.h"
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PBPReader::PBPReader(const char *filename) : header_(), isELF_(false) {
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file_ = File::OpenCFile(filename, "rb");
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if (!file_) {
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ERROR_LOG(LOADER, "Failed to open PBP file %s", filename);
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return;
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}
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fseek(file_, 0, SEEK_END);
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fileSize_ = ftell(file_);
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fseek(file_, 0, SEEK_SET);
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if (fread((char *)&header_, 1, sizeof(header_), file_) != sizeof(header_)) {
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ERROR_LOG(LOADER, "PBP is too small to be valid: %s", filename);
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fclose(file_);
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file_ = nullptr;
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return;
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}
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if (memcmp(header_.magic, "\0PBP", 4) != 0) {
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if (memcmp(header_.magic, "\nFLE", 4) != 0) {
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DEBUG_LOG(LOADER, "%s: File actually an ELF, not a PBP", filename);
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isELF_ = true;
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} else {
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ERROR_LOG(LOADER, "Magic number in %s indicated no PBP: %s", filename, header_.magic);
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}
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fclose(file_);
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file_ = nullptr;
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return;
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}
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DEBUG_LOG(LOADER, "Loading PBP, version = %08x", header_.version);
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}
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u8 *PBPReader::GetSubFile(PBPSubFile file, size_t *outSize) {
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if (!file_) {
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*outSize = 0;
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return new u8[0];
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}
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const size_t expected = GetSubFileSize(file);
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const u32 off = header_.offsets[(int)file];
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*outSize = expected;
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if (fseek(file_, off, SEEK_SET) != 0) {
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ERROR_LOG(LOADER, "PBP file offset invalid: %d", off);
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*outSize = 0;
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return new u8[0];
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} else {
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u8 *buffer = new u8[expected];
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size_t bytes = fread(buffer, 1, expected, file_);
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if (bytes != expected) {
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ERROR_LOG(LOADER, "PBP file read truncated: %d -> %d", (int)expected, (int)bytes);
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if (bytes < expected) {
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*outSize = bytes;
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}
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}
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return buffer;
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}
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}
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void PBPReader::GetSubFileAsString(PBPSubFile file, std::string *out) {
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if (!file_) {
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out->clear();
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return;
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}
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const size_t expected = GetSubFileSize(file);
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const u32 off = header_.offsets[(int)file];
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out->resize(expected);
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if (fseek(file_, off, SEEK_SET) != 0) {
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ERROR_LOG(LOADER, "PBP file offset invalid: %d", off);
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out->clear();
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} else {
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size_t bytes = fread((void *)out->data(), 1, expected, file_);
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if (bytes != expected) {
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ERROR_LOG(LOADER, "PBP file read truncated: %d -> %d", (int)expected, (int)bytes);
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if (bytes < expected) {
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out->resize(bytes);
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}
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}
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}
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}
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PBPReader::~PBPReader() {
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if (file_)
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fclose(file_);
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}
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