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Diffstat (limited to 'src/fs/virtfs/zipreader.cpp')
-rw-r--r--src/fs/virtfs/zipreader.cpp334
1 files changed, 0 insertions, 334 deletions
diff --git a/src/fs/virtfs/zipreader.cpp b/src/fs/virtfs/zipreader.cpp
deleted file mode 100644
index 2d473bec7..000000000
--- a/src/fs/virtfs/zipreader.cpp
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
- * The ManaPlus Client
- * Copyright (C) 2017 The ManaPlus Developers
- *
- * This file is part of The ManaPlus Client.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "fs/virtfs/zipreader.h"
-
-#include "fs/paths.h"
-
-#include "fs/virtfs/zipentry.h"
-#include "fs/virtfs/ziplocalheader.h"
-
-#include "utils/cast.h"
-#include "utils/checkutils.h"
-#include "utils/delete2.h"
-#include "utils/stringutils.h"
-
-#include <zlib.h>
-PRAGMA48(GCC diagnostic push)
-PRAGMA48(GCC diagnostic ignored "-Wshadow")
-#include <SDL_endian.h>
-PRAGMA48(GCC diagnostic pop)
-
-#include "debug.h"
-
-#ifndef SDL_BIG_ENDIAN
-#error missing SDL_endian.h
-#endif // SDL_BYTEORDER
-
-// #define DEBUG_ZIP
-
-extern const char *dirSeparator;
-
-#define readVal(val, sz, msg) \
- cnt = fread(static_cast<void*>(val), 1, sz, arcFile); \
- if (cnt != sz) \
- { \
- reportAlways("Error reading " msg " in file %s", \
- archiveName.c_str()); \
- delete2(header); \
- delete [] buf; \
- fclose(arcFile); \
- return false; \
- }
-
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-#define swapVal16(val) val = __builtin_bswap16(val);
-#define swapVal32(val) val = __builtin_bswap32(val);
-#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
-#define swapVal16(val)
-#define swapVal32(val)
-#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
-
-namespace VirtFs
-{
-
-namespace ZipReader
-{
- bool readArchiveInfo(ZipEntry *const entry)
- {
- if (entry == nullptr)
- {
- reportAlways("Entry is null.");
- return false;
- }
- const std::string archiveName = entry->root;
- STD_VECTOR<ZipLocalHeader*> &restrict headers = entry->mHeaders;
- STD_VECTOR<std::string> &restrict dirs = entry->mDirs;
- FILE *restrict const arcFile = fopen(archiveName.c_str(),
- "rb");
- if (arcFile == nullptr)
- {
- reportAlways("Can't open zip file %s",
- archiveName.c_str());
- return false;
- }
- uint8_t *const buf = new uint8_t[65535 + 10];
- uint16_t val16 = 0U;
- uint16_t method = 0U;
- ZipLocalHeader *header = nullptr;
-
-#ifdef DEBUG_ZIP
- logger->log("Read archive: %s", archiveName.c_str());
-#endif // DEBUG_ZIP
-
- // format source https://en.wikipedia.org/wiki/Zip_%28file_format%29
- while (feof(arcFile) == 0)
- {
- size_t cnt = 0U;
- // file header pointer on 0
- // read file header signature
- readVal(buf, 4, "zip file header"); // + 4
- // pointer on 4
-
- if (buf[0] == 0x50 &&
- buf[1] == 0x4B &&
- buf[2] == 0x03 &&
- buf[3] == 0x04)
- { // local file header
- header = new ZipLocalHeader;
- header->zipEntry = entry;
- // skip useless fields
- fseek(arcFile, 4, SEEK_CUR); // + 4
- // file header pointer on 8
- readVal(&method, 2, "compression method") // + 2
- swapVal16(method)
- header->compressed = (method != 0);
- // file header pointer on 10
- fseek(arcFile, 8, SEEK_CUR); // + 8
- // file header pointer on 18
- readVal(&header->compressSize, 4,
- "zip compressed size") // + 4
- swapVal32(header->compressSize)
- // file header pointer on 22
- readVal(&header->uncompressSize, 4,
- "zip uncompressed size") // + 4
- swapVal32(header->uncompressSize)
- // file header pointer on 26
- readVal(&val16, 2, "file name length") // + 2
- swapVal16(val16)
- // file header pointer on 28
- const uint32_t fileNameLen = CAST_U32(val16);
- if (fileNameLen > 1000)
- {
- reportAlways("Error too long file name in file %s",
- archiveName.c_str());
- delete header;
- delete [] buf;
- fclose(arcFile);
- return false;
- }
- readVal(&val16, 2, "extra field length") // + 2
- swapVal16(val16)
- // file header pointer on 30
- const uint32_t extraFieldLen = CAST_U32(val16);
- readVal(buf, fileNameLen, "file name");
- // file header pointer on 30 + fileNameLen
- buf[fileNameLen] = 0;
- header->fileName = std::string(
- reinterpret_cast<char*>(buf));
- prepareFsPath(header->fileName);
- header->dataOffset = CAST_S32(ftell(arcFile) + extraFieldLen);
- fseek(arcFile, extraFieldLen + header->compressSize, SEEK_CUR);
- // pointer on 30 + fileNameLen + extraFieldLen + compressSize
- if (findLast(header->fileName, dirSeparator) == false)
- {
- headers.push_back(header);
-#ifdef DEBUG_ZIP
- logger->log(" file name: %s",
- header->fileName.c_str());
- logger->log(" compression method: %u",
- CAST_U32(method));
- logger->log(" compressed size: %u",
- header->compressSize);
- logger->log(" uncompressed size: %u",
- header->uncompressSize);
-#endif // DEBUG_ZIP
- }
- else
- {
-#ifdef DEBUG_ZIP
- logger->log(" dir name: %s",
- header->fileName.c_str());
-#endif // DEBUG_ZIP
- dirs.push_back(header->fileName);
- delete header;
- }
- }
- else if (buf[0] == 0x50 &&
- buf[1] == 0x4B &&
- buf[2] == 0x01 &&
- buf[3] == 0x02)
- { // central directory file header
- // !!! This is quick way for read zip archives. !!!
- // !!! It ignore modified files in archive. !!!
- // ignoring central directory entries
- break;
- }
- else if (buf[0] == 0x50 &&
- buf[1] == 0x4B &&
- buf[2] == 0x05 &&
- buf[3] == 0x06)
- { // end of central directory
- // !!! This is quick way for read zip archives. !!!
- // !!! It ignore modified files in archive. !!!
- // ignoring end of central directory
- break;
- }
- else
- {
- reportAlways("Error in header signature (0x%02x%02x%02x%02x)"
- " in file %s",
- buf[0],
- buf[1],
- buf[2],
- buf[3],
- archiveName.c_str());
- delete [] buf;
- fclose(arcFile);
- return false;
- }
- }
- delete [] buf;
- fclose(arcFile);
- return true;
- }
-
- void reportZlibError(const std::string &text,
- const int err)
- {
- reportAlways("Zlib error: '%s' in %s",
- text.c_str(),
- getZlibError(err).c_str());
- }
-
- std::string getZlibError(const int err)
- {
- switch (err)
- {
- case Z_OK:
- return std::string();
- default:
- return "unknown zlib error";
- }
- }
-
- uint8_t *readCompressedFile(const ZipLocalHeader *restrict const header)
- {
- if (header == nullptr)
- {
- reportAlways("ZipReader::readCompressedFile: header is null");
- return nullptr;
- }
- FILE *restrict const arcFile = fopen(
- header->zipEntry->root.c_str(),
- "rb");
- if (arcFile == nullptr)
- {
- reportAlways("Can't open zip file %s",
- header->zipEntry->root.c_str());
- return nullptr;
- }
-
- fseek(arcFile, header->dataOffset, SEEK_SET);
- const uint32_t compressSize = header->compressSize;
- uint8_t *const buf = new uint8_t[compressSize];
- if (fread(static_cast<void*>(buf), 1, compressSize, arcFile) !=
- compressSize)
- {
- reportAlways("Read zip compressed file error from archive: %s",
- header->zipEntry->root.c_str());
- fclose(arcFile);
- delete [] buf;
- return nullptr;
- }
- fclose(arcFile);
- return buf;
- }
-
- const uint8_t *readFile(const ZipLocalHeader *restrict const header)
- {
- if (header == nullptr)
- {
- reportAlways("Open zip file error. header is null.");
- return nullptr;
- }
- uint8_t *restrict const in = readCompressedFile(header);
- if (in == nullptr)
- return nullptr;
- if (header->compressed == false)
- return in; // return as is if data not compressed
- const size_t outSize = header->uncompressSize;
- uint8_t *restrict const out = new uint8_t[outSize];
- if (outSize == 0)
- {
- delete [] in;
- return out;
- }
-
- z_stream strm;
- strm.zalloc = nullptr;
- strm.zfree = nullptr;
- strm.opaque = nullptr;
- strm.next_in = in;
- strm.avail_in = header->compressSize;
- strm.next_out = out;
- strm.avail_out = CAST_U32(outSize);
-
-PRAGMACLANG6GCC(GCC diagnostic push)
-PRAGMACLANG6GCC(GCC diagnostic ignored "-Wold-style-cast")
- int ret = inflateInit2(&strm, -MAX_WBITS);
-PRAGMACLANG6GCC(GCC diagnostic pop)
-
- if (ret != Z_OK)
- {
- reportZlibError(header->zipEntry->root, ret);
- delete [] in;
- delete [] out;
- return nullptr;
- }
- ret = inflate(&strm, Z_FINISH);
-// ret = inflate(&strm, Z_SYNC_FLUSH);
- if (ret != Z_OK &&
- ret != Z_STREAM_END)
- {
- reportZlibError("file decompression error",
- ret);
- inflateEnd(&strm);
- delete [] in;
- delete [] out;
- return nullptr;
- }
- inflateEnd(&strm);
- delete [] in;
- return out;
- }
-} // namespace ZipReader
-
-} // namespace VirtFs
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