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| author | Andrei Karas <akaras@inbox.ru> | 2017-03-09 05:51:27 +0300 |
|---|---|---|
| committer | Andrei Karas <akaras@inbox.ru> | 2017-03-09 05:51:27 +0300 |
| commit | 5b2362d561714264681f99d4712f0b692be1c338 (patch) | |
| tree | 7da719a8bcf438e044e1648a8ca3af8dc3c89a04 /src/fs | |
| parent | 4d05e132cfd424e454d7ab3727775b127bf0e6a2 (diff) | |
| download | mv-5b2362d561714264681f99d4712f0b692be1c338.tar.gz mv-5b2362d561714264681f99d4712f0b692be1c338.tar.bz2 mv-5b2362d561714264681f99d4712f0b692be1c338.tar.xz mv-5b2362d561714264681f99d4712f0b692be1c338.zip | |
Probably fix reading zip archives on big endian cpu.
Diffstat (limited to 'src/fs')
| -rw-r--r-- | src/fs/virtfs/zip.cpp | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/src/fs/virtfs/zip.cpp b/src/fs/virtfs/zip.cpp index 6d4f7e38a..7bfaba3fc 100644 --- a/src/fs/virtfs/zip.cpp +++ b/src/fs/virtfs/zip.cpp @@ -33,9 +33,18 @@ #include <iostream> #include <unistd.h> #include <zlib.h> +#include <SDL_endian.h> #include "debug.h" +#ifndef SDL_BIG_ENDIAN +#error missing SDL_endian.h +#endif // SDL_BYTEORDER + +#if SDL_BYTEORDER == SDL_BIG_ENDIAN +#include <byteswap.h> +#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN + // #define DEBUG_ZIP extern const char *dirSeparator; @@ -50,7 +59,15 @@ extern const char *dirSeparator; delete [] buf; \ fclose(arcFile); \ return false; \ - } \ + } + +#if SDL_BYTEORDER == SDL_BIG_ENDIAN +#define swapVal16(val) val = bswap_16(val); +#define swapVal32(val) val = bswap_32(val); +#else // SDL_BYTEORDER == SDL_BIG_ENDIAN +#define swapVal16(val) +#define swapVal32(val) +#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN namespace Zip { @@ -100,21 +117,22 @@ namespace Zip // skip useless fields fseek(arcFile, 4, SEEK_CUR); // + 4 // file header pointer on 8 - // +++ need add endian specific decoding for method 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 - // +++ need add endian specific decoding for val32 readVal(&header->uncompressSize, 4, "zip uncompressed size") // + 4 + swapVal32(header->uncompressSize) // file header pointer on 26 - // +++ need add endian specific decoding for val32 readVal(&val16, 2, "file name length") // + 2 + swapVal16(val16) // file header pointer on 28 const uint32_t fileNameLen = CAST_U32(val16); if (fileNameLen > 1000) @@ -127,6 +145,7 @@ namespace Zip 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"); |