diff options
Diffstat (limited to 'Source/3rdParty/physfs/physfs_archiver_iso9660.c')
| -rw-r--r-- | Source/3rdParty/physfs/physfs_archiver_iso9660.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/Source/3rdParty/physfs/physfs_archiver_iso9660.c b/Source/3rdParty/physfs/physfs_archiver_iso9660.c deleted file mode 100644 index 965c83f..0000000 --- a/Source/3rdParty/physfs/physfs_archiver_iso9660.c +++ /dev/null @@ -1,386 +0,0 @@ -/* - * ISO9660 support routines for PhysicsFS. - * - * Please see the file LICENSE.txt in the source's root directory. - * - * This file originally written by Christoph Nelles, but was largely - * rewritten by Ryan C. Gordon (so please harass Ryan about bugs and not - * Christoph). - */ - -/* - * Handles CD-ROM disk images (and raw CD-ROM devices). - * - * Not supported: - * - Rock Ridge (needed for sparse files, device nodes and symlinks, etc). - * - Non 2048 Sectors - * - TRANS.TBL (maps 8.3 filenames on old discs to long filenames). - * - Multiextents (4gb max file size without it). - * - UDF - * - * Deviations from the standard - * - Ignores mandatory sort order - * - Allows various invalid file names - * - * Problems - * - Ambiguities in the standard - */ - -#define __PHYSICSFS_INTERNAL__ -#include "physfs_internal.h" - -#if PHYSFS_SUPPORTS_ISO9660 - -#include <time.h> - -/* ISO9660 often stores values in both big and little endian formats: little - first, followed by big. While technically there might be different values - in each, we just always use the littleendian ones and swap ourselves. The - fields aren't aligned anyhow, so you have to serialize them in any case - to avoid crashes on many CPU archs in any case. */ - -static int iso9660LoadEntries(PHYSFS_Io *io, const int joliet, - const char *base, const PHYSFS_uint64 dirstart, - const PHYSFS_uint64 dirend, void *unpkarc); - -static int iso9660AddEntry(PHYSFS_Io *io, const int joliet, const int isdir, - const char *base, PHYSFS_uint8 *fname, - const int fnamelen, const PHYSFS_sint64 ts, - const PHYSFS_uint64 pos, const PHYSFS_uint64 len, - void *unpkarc) -{ - char *fullpath; - char *fnamecpy; - size_t baselen; - size_t fullpathlen; - void *entry; - int i; - - if (fnamelen == 1 && ((fname[0] == 0) || (fname[0] == 1))) - return 1; /* Magic that represents "." and "..", ignore */ - - BAIL_IF(fnamelen == 0, PHYSFS_ERR_CORRUPT, 0); - assert(fnamelen > 0); - assert(fnamelen <= 255); - BAIL_IF(joliet && (fnamelen % 2), PHYSFS_ERR_CORRUPT, 0); - - /* Joliet is UCS-2, so at most UTF-8 will double the byte size */ - baselen = strlen(base); - fullpathlen = baselen + (fnamelen * (joliet ? 2 : 1)) + 2; - fullpath = (char *) __PHYSFS_smallAlloc(fullpathlen); - BAIL_IF(!fullpath, PHYSFS_ERR_OUT_OF_MEMORY, 0); - fnamecpy = fullpath; - if (baselen > 0) - { - snprintf(fullpath, fullpathlen, "%s/", base); - fnamecpy += baselen + 1; - fullpathlen -= baselen - 1; - } /* if */ - - if (joliet) - { - PHYSFS_uint16 *ucs2 = (PHYSFS_uint16 *) fname; - int total = fnamelen / 2; - for (i = 0; i < total; i++) - ucs2[i] = PHYSFS_swapUBE16(ucs2[i]); - ucs2[total] = '\0'; - PHYSFS_utf8FromUcs2(ucs2, fnamecpy, fullpathlen); - } /* if */ - else - { - for (i = 0; i < fnamelen; i++) - { - /* We assume the filenames are low-ASCII; consider the archive - corrupt if we see something above 127, since we don't know the - encoding. (We can change this later if we find out these exist - and are intended to be, say, latin-1 or UTF-8 encoding). */ - BAIL_IF(fname[i] > 127, PHYSFS_ERR_CORRUPT, 0); - fnamecpy[i] = fname[i]; - } /* for */ - fnamecpy[fnamelen] = '\0'; - - if (!isdir) - { - /* find last SEPARATOR2 */ - char *ptr = strrchr(fnamecpy, ';'); - if (ptr && (ptr != fnamecpy)) - *(ptr--) = '\0'; - else - ptr = fnamecpy + (fnamelen - 1); - - /* chop out any trailing '.', as done in all implementations */ - if (*ptr == '.') - *ptr = '\0'; - } /* if */ - } /* else */ - - entry = UNPK_addEntry(unpkarc, fullpath, isdir, ts, ts, pos, len); - if ((entry) && (isdir)) - { - if (!iso9660LoadEntries(io, joliet, fullpath, pos, pos + len, unpkarc)) - entry = NULL; /* so we report a failure later. */ - } /* if */ - - __PHYSFS_smallFree(fullpath); - return entry != NULL; -} /* iso9660AddEntry */ - -static int iso9660LoadEntries(PHYSFS_Io *io, const int joliet, - const char *base, const PHYSFS_uint64 dirstart, - const PHYSFS_uint64 dirend, void *unpkarc) -{ - PHYSFS_uint64 readpos = dirstart; - - while (1) - { - PHYSFS_uint8 recordlen; - PHYSFS_uint8 extattrlen; - PHYSFS_uint32 extent; - PHYSFS_uint32 datalen; - PHYSFS_uint8 ignore[4]; - PHYSFS_uint8 year, month, day, hour, minute, second, offset; - PHYSFS_uint8 flags; - PHYSFS_uint8 fnamelen; - PHYSFS_uint8 fname[256]; - PHYSFS_sint64 timestamp; - struct tm t; - int isdir; - int multiextent; - - BAIL_IF_ERRPASS(!io->seek(io, readpos), 0); - - /* recordlen = 0 -> no more entries or fill entry */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &recordlen, 1), 0); - if (recordlen > 0) - readpos += recordlen; /* ready to seek to next record. */ - else - { - PHYSFS_uint64 nextpos; - - /* if we are in the last sector of the directory & it's 0 -> end */ - if ((dirend - 2048) <= (readpos - 1)) - break; /* finished */ - - /* else skip to the next sector & continue; */ - nextpos = (((readpos - 1) / 2048) + 1) * 2048; - - /* whoops, can't make forward progress! */ - BAIL_IF(nextpos == readpos, PHYSFS_ERR_CORRUPT, 0); - - readpos = nextpos; - continue; /* start back at upper loop. */ - } /* else */ - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &extattrlen, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &extent, 4), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* extent be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &datalen, 4), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* datalen be */ - - /* record timestamp */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &year, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &month, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &day, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &hour, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &minute, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &second, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &offset, 1), 0); - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &flags, 1), 0); - isdir = (flags & (1 << 1)) != 0; - multiextent = (flags & (1 << 7)) != 0; - BAIL_IF(multiextent, PHYSFS_ERR_UNSUPPORTED, 0); /* !!! FIXME */ - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 1), 0); /* unit size */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 1), 0); /* interleave gap */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* seqnum le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* seqnum be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &fnamelen, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, fname, fnamelen), 0); - - t.tm_sec = second; - t.tm_min = minute; - t.tm_hour = hour; - t.tm_mday = day; - t.tm_mon = month - 1; - t.tm_year = year; - t.tm_wday = 0; - t.tm_yday = 0; - t.tm_isdst = -1; - timestamp = (PHYSFS_sint64) mktime(&t); - - extent += extattrlen; /* skip extended attribute record. */ - - /* infinite loop, corrupt file? */ - BAIL_IF((extent * 2048) == dirstart, PHYSFS_ERR_CORRUPT, 0); - - if (!iso9660AddEntry(io, joliet, isdir, base, fname, fnamelen, - timestamp, extent * 2048, datalen, unpkarc)) - { - return 0; - } /* if */ - } /* while */ - - return 1; -} /* iso9660LoadEntries */ - - -static int parseVolumeDescriptor(PHYSFS_Io *io, PHYSFS_uint64 *_rootpos, - PHYSFS_uint64 *_rootlen, int *_joliet, - int *_claimed) -{ - PHYSFS_uint64 pos = 32768; /* start at the Primary Volume Descriptor */ - int found = 0; - int done = 0; - - *_joliet = 0; - - while (!done) - { - PHYSFS_uint8 type; - PHYSFS_uint8 identifier[5]; - PHYSFS_uint8 version; - PHYSFS_uint8 flags; - PHYSFS_uint8 escapeseqs[32]; - PHYSFS_uint8 ignore[32]; - PHYSFS_uint16 blocksize; - PHYSFS_uint32 extent; - PHYSFS_uint32 datalen; - - BAIL_IF_ERRPASS(!io->seek(io, pos), 0); - pos += 2048; /* each volume descriptor is 2048 bytes */ - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &type, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &identifier, 5), 0); - - if (memcmp(identifier, "CD001", 5) != 0) /* maybe not an iso? */ - { - BAIL_IF(!*_claimed, PHYSFS_ERR_UNSUPPORTED, 0); - continue; /* just skip this one */ - } /* if */ - - *_claimed = 1; /* okay, this is probably an iso. */ - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &version, 1), 0); /* version */ - BAIL_IF(version != 1, PHYSFS_ERR_UNSUPPORTED, 0); - - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &flags, 1), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 32), 0); /* system id */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 32), 0); /* volume id */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 8), 0); /* reserved */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* space le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* space be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, escapeseqs, 32), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* setsize le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* setsize be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* seq num le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* seq num be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &blocksize, 2), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 2), 0); /* blocklen be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* pthtablen le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* pthtablen be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* pthtabpos le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* optpthtabpos le */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* pthtabpos be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* optpthtabpos be */ - - /* root directory record... */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 1), 0); /* len */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 1), 0); /* attr len */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &extent, 4), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* extent be */ - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &datalen, 4), 0); - BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, ignore, 4), 0); /* datalen be */ - - /* !!! FIXME: deal with this properly. */ - blocksize = PHYSFS_swapULE32(blocksize); - BAIL_IF(blocksize && (blocksize != 2048), PHYSFS_ERR_UNSUPPORTED, 0); - - switch (type) - { - case 1: /* Primary Volume Descriptor */ - case 2: /* Supplementary Volume Descriptor */ - if (found < type) - { - *_rootpos = PHYSFS_swapULE32(extent) * 2048; - *_rootlen = PHYSFS_swapULE32(datalen); - found = type; - - if (found == 2) /* possible Joliet volume */ - { - const PHYSFS_uint8 *s = escapeseqs; - *_joliet = !(flags & 1) && - (s[0] == 0x25) && (s[1] == 0x2F) && - ((s[2] == 0x40) || (s[2] == 0x43) || (s[2] == 0x45)); - } /* if */ - } /* if */ - break; - - case 255: /* type 255 terminates the volume descriptor list */ - done = 1; - break; - - default: - break; /* skip unknown types. */ - } /* switch */ - } /* while */ - - BAIL_IF(!found, PHYSFS_ERR_CORRUPT, 0); - - return 1; -} /* parseVolumeDescriptor */ - - -static void *ISO9660_openArchive(PHYSFS_Io *io, const char *filename, - int forWriting, int *claimed) -{ - PHYSFS_uint64 rootpos = 0; - PHYSFS_uint64 len = 0; - int joliet = 0; - void *unpkarc = NULL; - - assert(io != NULL); /* shouldn't ever happen. */ - - BAIL_IF(forWriting, PHYSFS_ERR_READ_ONLY, NULL); - - if (!parseVolumeDescriptor(io, &rootpos, &len, &joliet, claimed)) - return NULL; - - unpkarc = UNPK_openArchive(io); - BAIL_IF_ERRPASS(!unpkarc, NULL); - - if (!iso9660LoadEntries(io, joliet, "", rootpos, rootpos + len, unpkarc)) - { - UNPK_abandonArchive(unpkarc); - return NULL; - } /* if */ - - return unpkarc; -} /* ISO9660_openArchive */ - - -const PHYSFS_Archiver __PHYSFS_Archiver_ISO9660 = -{ - CURRENT_PHYSFS_ARCHIVER_API_VERSION, - { - "ISO", - "ISO9660 image file", - "Ryan C. Gordon <icculus@icculus.org>", - "https://icculus.org/physfs/", - 0, /* supportsSymlinks */ - }, - ISO9660_openArchive, - UNPK_enumerate, - UNPK_openRead, - UNPK_openWrite, - UNPK_openAppend, - UNPK_remove, - UNPK_mkdir, - UNPK_stat, - UNPK_closeArchive -}; - -#endif /* defined PHYSFS_SUPPORTS_ISO9660 */ - -/* end of physfs_archiver_iso9660.c ... */ - |