mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-11-11 16:49:27 +01:00
Henrik RydgårdandClaude Opus 5.5
34a0090a18
A zip or 7z with a PS1 disc in it (a cue sheet and the files it names, a .ccd with its .img and .sub, or a lone raw .bin or .img) is now installed like a zipped ISO. A disc of several files goes into a folder of its own, named after the cue sheet or .ccd. An ISO in the archive still takes priority, and a lone .bin or .img only counts when nothing else does. The game screen offers Play for a PS1 disc image only when the installed firmware's POPS can run it: 3.95 to 6.61, with popsman.prx. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
340 lines
12 KiB
C++
340 lines
12 KiB
C++
// Copyright (c) 2012- 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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// PS1EbootFileLoader: small disc images in a temp directory, read back through the EBOOT made from them.
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#include <algorithm>
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#include <cstring>
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#include <string>
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#include <vector>
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#include "ext/libzip/zip.h"
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#include "Common/File/DirListing.h"
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#include "Common/File/FileUtil.h"
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#include "Common/File/Path.h"
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#include "Core/ELF/PBPReader.h"
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#include "Core/ELF/ParamSFO.h"
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#include "Core/FileLoaders/PS1EbootFileLoader.h"
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#include "Core/Loaders.h"
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#include "Core/Util/GameManager.h"
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#include "UnitTest.h"
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static const u32 SECTOR = 2352;
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static const u32 BLOCK = 16 * SECTOR + 5;
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static const u8 SYNC[12] = { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00 };
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static void Put32(u8 *p, u32 v) {
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p[0] = v & 0xFF;
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p[1] = (v >> 8) & 0xFF;
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p[2] = (v >> 16) & 0xFF;
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p[3] = v >> 24;
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}
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static u32 Get32(const u8 *p) {
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return p[0] | (p[1] << 8) | (p[2] << 16) | ((u32)p[3] << 24);
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}
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static u8 BCD(u32 v) {
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return (u8)(((v / 10) << 4) | (v % 10));
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}
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// The user data of a small Mode 2 Form 1 data track: a PVD at 16, its root directory at 18 with one
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// SYSTEM.CNF at 20, and a pattern everywhere else.
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static std::vector<u8> MakeUserData(u32 sectors) {
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std::vector<u8> data(sectors * 2048);
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for (size_t i = 0; i < data.size(); i++) {
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data[i] = (u8)(i * 7 + i / 2048);
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}
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u8 *pvd = &data[16 * 2048];
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memset(pvd, 0, 2048);
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memcpy(pvd, "\x01" "CD001", 6);
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Put32(pvd + 156 + 2, 18);
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Put32(pvd + 156 + 10, 2048);
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u8 *dir = &data[18 * 2048];
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memset(dir, 0, 2048);
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const char name[] = "SYSTEM.CNF;1";
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dir[0] = (u8)(33 + sizeof(name) - 1 + 1);
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Put32(dir + 2, 20);
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const std::string cnf = "BOOT = cdrom:\\SLUS_123.45;1\r\nTCB = 4\r\n";
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Put32(dir + 10, (u32)cnf.size());
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dir[32] = (u8)(sizeof(name) - 1);
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memcpy(dir + 33, name, sizeof(name) - 1);
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memset(&data[20 * 2048], 0, 2048);
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memcpy(&data[20 * 2048], cnf.data(), cnf.size());
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return data;
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}
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// Raw sectors around user data, as a .bin has them. The EDC and ECC are a pattern, which nothing checks.
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static std::vector<u8> MakeRawTrack(const std::vector<u8> &user) {
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const u32 sectors = (u32)(user.size() / 2048);
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std::vector<u8> raw(sectors * SECTOR);
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for (u32 s = 0; s < sectors; s++) {
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u8 *p = &raw[s * SECTOR];
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memcpy(p, SYNC, 12);
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const u32 f = s + 150;
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p[12] = BCD(f / 4500);
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p[13] = BCD(f / 75 % 60);
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p[14] = BCD(f % 75);
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p[15] = 2;
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static const u8 subheader[8] = { 0, 0, 8, 0, 0, 0, 8, 0 };
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memcpy(p + 16, subheader, 8);
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memcpy(p + 24, &user[s * 2048], 2048);
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for (u32 i = 24 + 2048; i < SECTOR; i++) {
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p[i] = (u8)(s + i);
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}
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}
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return raw;
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}
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static std::vector<u8> MakeAudio(u32 sectors) {
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std::vector<u8> audio(sectors * SECTOR);
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for (size_t i = 0; i < audio.size(); i++) {
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audio[i] = (u8)(i * 13 + 5);
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}
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return audio;
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}
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static std::vector<u8> ReadAll(FileLoader *loader, s64 pos, size_t size) {
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std::vector<u8> out(size);
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out.resize(loader->ReadAt(pos, size, out.data()));
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return out;
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}
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// The PSAR's disc image as it should be: each block of 16 sectors, stored, after its DEFLATE header.
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static std::vector<u8> ExpectedBlocks(const std::vector<u8> &disc) {
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const u32 blocks = (u32)((disc.size() / SECTOR + 15) / 16);
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std::vector<u8> out;
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for (u32 b = 0; b < blocks; b++) {
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static const u8 header[5] = { 0x01, 0x00, 0x93, 0xFF, 0x6C };
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out.insert(out.end(), header, header + 5);
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for (u32 i = 0; i < 16 * SECTOR; i++) {
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const size_t pos = (size_t)b * 16 * SECTOR + i;
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out.push_back(pos < disc.size() ? disc[pos] : 0);
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}
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}
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return out;
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}
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static bool CheckEboot(PS1EbootFileLoader &eboot, const std::vector<u8> &disc, u32 numTracks) {
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EXPECT_TRUE(eboot.IsValid());
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EXPECT_EQ_STR(eboot.DiscID(), std::string("SLUS12345"));
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std::string error;
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EXPECT_TRUE(Identify_File(&eboot, &error) == IdentifiedFileType::PSP_PS1_PBP);
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PBPReader pbp(&eboot);
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EXPECT_TRUE(pbp.IsValid());
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std::vector<u8> sfoData;
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EXPECT_TRUE(pbp.GetSubFile(PBP_PARAM_SFO, &sfoData));
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ParamSFOData sfo;
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EXPECT_TRUE(sfo.ReadSFO(sfoData));
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EXPECT_EQ_STR(sfo.GetValueString("CATEGORY"), std::string("ME"));
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EXPECT_EQ_STR(sfo.GetValueString("DISC_ID"), std::string("SLUS12345"));
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const std::vector<u8> header = ReadAll(&eboot, 0, 0x28);
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EXPECT_EQ_INT(header.size(), 0x28);
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const u32 psar = Get32(&header[0x24]);
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const std::vector<u8> psarHeader = ReadAll(&eboot, psar, 0x1300);
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EXPECT_EQ_MEM(&psarHeader[0], "PSISOIMG0000", 12);
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EXPECT_EQ_MEM(&psarHeader[0x400], "_SLUS_12345", 12);
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// The TOC: the last track, the lead-out (at 00:02:00 plus the disc's length), and the tracks.
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const u32 sectors = (u32)(disc.size() / SECTOR);
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const u8 *toc = &psarHeader[0x800];
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EXPECT_EQ_INT(toc[0], 0x41);
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EXPECT_EQ_INT(toc[2], 0xA0);
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EXPECT_EQ_INT(toc[10 + 2], 0xA1);
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EXPECT_EQ_INT(toc[10 + 7], BCD(numTracks));
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EXPECT_EQ_INT(toc[20 + 2], 0xA2);
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EXPECT_EQ_INT(toc[20 + 8], BCD((sectors + 150) / 75 % 60));
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EXPECT_EQ_INT(toc[20 + 9], BCD((sectors + 150) % 75));
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EXPECT_EQ_INT(toc[30 + 2], 0x01);
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EXPECT_EQ_INT(toc[30 + 8], 0x02);
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EXPECT_EQ_INT(toc[30 + 9], 0x00);
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// The index, then the blocks: all of them at once, and reads that start and end mid-sector and
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// cross blocks, as POPS's 0x200-aligned ones do.
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const u32 blocks = (sectors + 15) / 16;
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const std::vector<u8> index = ReadAll(&eboot, psar + 0x4000, (blocks + 1) * 32);
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for (u32 b = 0; b < blocks; b++) {
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EXPECT_EQ_INT(Get32(&index[b * 32]), b * BLOCK);
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EXPECT_EQ_INT(index[b * 32 + 4] | (index[b * 32 + 5] << 8), BLOCK);
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}
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EXPECT_EQ_INT(Get32(&index[blocks * 32]), 0);
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const std::vector<u8> expected = ExpectedBlocks(disc);
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const s64 data = psar + 0x100000;
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EXPECT_EQ_INT(eboot.FileSize(), data + expected.size());
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const std::vector<u8> all = ReadAll(&eboot, data, expected.size() + 100);
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EXPECT_EQ_INT(all.size(), expected.size());
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EXPECT_TRUE(all == expected);
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const size_t starts[] = { 0, 3, 0xB3, BLOCK - 1, BLOCK + 5 + SECTOR - 7, expected.size() - 0x300 };
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for (size_t start : starts) {
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const size_t len = std::min((size_t)0x9400, expected.size() - start);
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const std::vector<u8> part = ReadAll(&eboot, data + start, len);
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EXPECT_EQ_INT(part.size(), len);
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EXPECT_TRUE(memcmp(part.data(), &expected[start], len) == 0);
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}
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return true;
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}
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bool TestPS1Eboot() {
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const Path dir = UnitTestTempPath("unittest_ps1eboot");
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File::DeleteDirRecursively(dir);
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EXPECT_TRUE(File::CreateFullPath(dir));
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const std::vector<u8> user = MakeUserData(40);
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const std::vector<u8> data = MakeRawTrack(user);
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const std::vector<u8> audio = MakeAudio(20);
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EXPECT_TRUE(File::WriteDataToFile(false, data.data(), data.size(), dir / "Game (Track 1).bin"));
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EXPECT_TRUE(File::WriteDataToFile(false, audio.data(), audio.size(), dir / "Game (Track 2).bin"));
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// A data track and an audio track in two files, the audio track's pregap ripped (INDEX 00).
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const std::string cue =
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"FILE \"Game (Track 1).bin\" BINARY\r\n"
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" TRACK 01 MODE2/2352\r\n"
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" INDEX 01 00:00:00\r\n"
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"FILE \"Game (Track 2).bin\" BINARY\r\n"
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" TRACK 02 AUDIO\r\n"
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" INDEX 00 00:00:00\r\n"
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" INDEX 01 00:00:05\r\n";
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EXPECT_TRUE(File::WriteStringToFile(true, cue, dir / "Game.cue"));
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std::vector<u8> disc = data;
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disc.insert(disc.end(), audio.begin(), audio.end());
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{
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PS1EbootFileLoader eboot(dir / "Game.cue");
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if (!CheckEboot(eboot, disc, 2)) {
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return false;
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}
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EXPECT_EQ_STR(eboot.Title(), std::string("Game"));
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// Track 2's pregap starts at LBA 40, and the track at 45.
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const std::vector<u8> toc = ReadAll(&eboot, Get32(&ReadAll(&eboot, 0, 0x28)[0x24]) + 0x800 + 40, 10);
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EXPECT_EQ_INT(toc[0], 0x01);
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EXPECT_EQ_INT(toc[2], 0x02);
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EXPECT_EQ_INT(toc[5], BCD(190 % 75));
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EXPECT_EQ_INT(toc[9], BCD(195 % 75));
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}
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// The first file opened on its own: the cue sheet that names it describes it.
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{
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EXPECT_TRUE(FindCueSheetFor(dir / "Game (Track 1).bin") == dir / "Game.cue");
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PS1EbootFileLoader eboot(dir / "Game (Track 1).bin");
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if (!CheckEboot(eboot, disc, 2)) {
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return false;
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}
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}
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// A PREGAP that isn't in the file: generated silence before the track.
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const std::string pregapCue =
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"FILE \"Game (Track 1).bin\" BINARY\r\n"
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" TRACK 01 MODE2/2352\r\n"
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" INDEX 01 00:00:00\r\n"
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"FILE \"Game (Track 2).bin\" BINARY\r\n"
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" TRACK 02 AUDIO\r\n"
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" PREGAP 00:00:03\r\n"
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" INDEX 01 00:00:00\r\n";
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EXPECT_TRUE(File::WriteStringToFile(true, pregapCue, dir / "Pregap.cue"));
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{
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std::vector<u8> gapped = data;
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gapped.resize(gapped.size() + 3 * SECTOR, 0);
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gapped.insert(gapped.end(), audio.begin(), audio.end());
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PS1EbootFileLoader eboot(dir / "Pregap.cue");
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if (!CheckEboot(eboot, gapped, 2)) {
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return false;
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}
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}
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// A CloneCD image, and a bare .iso of only the user data, whose sectors are made around it.
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EXPECT_TRUE(File::WriteDataToFile(false, data.data(), data.size(), dir / "Clone.img"));
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EXPECT_TRUE(File::WriteStringToFile(true, "[CloneCD]\r\nVersion=3\r\n[TRACK 1]\r\nMODE=2\r\nINDEX 1=0\r\n", dir / "Clone.ccd"));
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{
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PS1EbootFileLoader eboot(dir / "Clone.ccd");
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if (!CheckEboot(eboot, data, 1)) {
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return false;
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}
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}
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EXPECT_TRUE(File::WriteDataToFile(false, user.data(), user.size(), dir / "Cooked.iso"));
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{
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std::vector<u8> cooked = data;
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for (u32 s = 0; s < 40; s++) {
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memset(&cooked[s * SECTOR + 24 + 2048], 0, SECTOR - 24 - 2048);
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}
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PS1EbootFileLoader eboot(dir / "Cooked.iso");
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if (!CheckEboot(eboot, cooked, 1)) {
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return false;
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}
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}
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// The browser shows each disc once: by its cue sheet or .ccd, and a .bin of its own only if it
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// could be a disc image.
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const std::vector<u8> loose(3 * SECTOR, 1);
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EXPECT_TRUE(File::WriteDataToFile(false, loose.data(), loose.size(), dir / "Loose.bin"));
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EXPECT_TRUE(File::WriteDataToFile(false, loose.data(), 100, dir / "Junk.bin"));
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std::vector<File::FileInfo> files;
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File::GetFilesInDir(dir, &files);
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RemoveDescribedDiscImages(&files);
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std::vector<std::string> names;
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for (const File::FileInfo &info : files) {
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names.push_back(info.name);
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}
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std::sort(names.begin(), names.end());
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const std::vector<std::string> expectedNames = { "Clone.ccd", "Cooked.iso", "Game.cue", "Loose.bin", "Pregap.cue" };
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EXPECT_TRUE(names == expectedNames);
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// Installing from a zip: the cue sheet and both its files, into a folder of their own.
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const Path zipPath = dir / "Game.zip";
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{
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int errorp = 0;
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zip_t *z = zip_open(zipPath.c_str(), ZIP_CREATE | ZIP_TRUNCATE, &errorp);
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EXPECT_TRUE(z != nullptr);
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const std::pair<const char *, const std::vector<u8> *> entries[] = {
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{ "Game/Game (Track 1).bin", &data },
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{ "Game/Game (Track 2).bin", &audio },
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};
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for (const auto &entry : entries) {
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zip_source_t *source = zip_source_buffer(z, entry.second->data(), entry.second->size(), 0);
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EXPECT_TRUE(zip_file_add(z, entry.first, source, ZIP_FL_ENC_UTF_8) >= 0);
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}
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zip_source_t *cueSource = zip_source_buffer(z, cue.data(), cue.size(), 0);
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EXPECT_TRUE(zip_file_add(z, "Game/Game.cue", cueSource, ZIP_FL_ENC_UTF_8) >= 0);
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zip_source_t *readme = zip_source_buffer(z, "hi", 2, 0);
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EXPECT_TRUE(zip_file_add(z, "readme.txt", readme, ZIP_FL_ENC_UTF_8) >= 0);
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EXPECT_TRUE(zip_close(z) == 0);
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}
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{
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int errorp = 0;
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zip_t *z = zip_open(zipPath.c_str(), 0, &errorp);
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EXPECT_TRUE(z != nullptr);
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ZipFileInfo info{};
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DetectZipFileContents(z, &info);
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EXPECT_TRUE(info.contents == ZipFileContents::PSX_DISC);
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EXPECT_EQ_INT(info.discFiles.size(), 3);
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EXPECT_EQ_STR(info.discFiles[0], std::string("Game/Game.cue"));
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const Path installDir = dir / "installed";
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EXPECT_TRUE(File::CreateFullPath(installDir));
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GameManager manager;
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EXPECT_TRUE(manager.InstallZippedPS1Disc(z, info.discFiles, installDir));
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zip_close(z);
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PS1EbootFileLoader eboot(installDir / "Game" / "Game.cue");
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if (!CheckEboot(eboot, disc, 2)) {
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return false;
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}
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}
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File::DeleteDirRecursively(dir);
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return true;
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}
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