--- a/misc/libphysfs/archiver_iso9660.c Wed May 16 18:22:28 2018 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,961 +0,0 @@
-/*
- * ISO9660 support routines for PhysicsFS.
- *
- * Please see the file LICENSE.txt in the source's root directory.
- *
- * This file written by Christoph Nelles.
- */
-
-/* !!! FIXME: this file needs Ryanification. */
-
-/*
- * Handles CD-ROM disk images (and raw CD-ROM devices).
- *
- * Not supported:
- * - RockRidge
- * - Non 2048 Sectors
- * - 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>
-
-/* cache files smaller than this completely in memory */
-#define ISO9660_FULLCACHEMAXSIZE 2048
-
-/* !!! FIXME: this is going to cause trouble. */
-#pragma pack(push) /* push current alignment to stack */
-#pragma pack(1) /* set alignment to 1 byte boundary */
-
-/* This is the format as defined by the standard
-typedef struct
-{
- PHYSFS_uint32 lsb;
- PHYSFS_uint32 msb;
-} ISOBB32bit; // 32byte Both Byte type, means the value first in LSB then in MSB
-
-typedef struct
-{
- PHYSFS_uint16 lsb;
- PHYSFS_uint16 msb;
-} ISOBB16bit; // 16byte Both Byte type, means the value first in LSB then in MSB
-*/
-
-/* define better ones to simplify coding (less if's) */
-#if PHYSFS_BYTEORDER == PHYSFS_LIL_ENDIAN
-#define ISOBB32bit(name) PHYSFS_uint32 name; PHYSFS_uint32 __dummy_##name;
-#define ISOBB16bit(name) PHYSFS_uint16 name; PHYSFS_uint16 __dummy_##name;
-#else
-#define ISOBB32bit(name) PHYSFS_uint32 __dummy_##name; PHYSFS_uint32 name;
-#define ISOBB16bit(name) PHYSFS_uint16 __dummy_##name; PHYSFS_uint16 name;
-#endif
-
-typedef struct
-{
- char year[4];
- char month[2];
- char day[2];
- char hour[2];
- char minute[2];
- char second[2];
- char centisec[2];
- PHYSFS_sint8 offset; /* in 15min from GMT */
-} ISO9660VolumeTimestamp;
-
-typedef struct
-{
- PHYSFS_uint8 year;
- PHYSFS_uint8 month;
- PHYSFS_uint8 day;
- PHYSFS_uint8 hour;
- PHYSFS_uint8 minute;
- PHYSFS_uint8 second;
- PHYSFS_sint8 offset;
-} ISO9660FileTimestamp;
-
-typedef struct
-{
- unsigned existence:1;
- unsigned directory:1;
- unsigned associated_file:1;
- unsigned record:1;
- unsigned protection:1;
- unsigned reserved:2;
- unsigned multiextent:1;
-} ISO9660FileFlags;
-
-typedef struct
-{
- PHYSFS_uint8 length;
- PHYSFS_uint8 attribute_length;
- ISOBB32bit(extent_location)
- ISOBB32bit(data_length)
- ISO9660FileTimestamp timestamp;
- ISO9660FileFlags file_flags;
- PHYSFS_uint8 file_unit_size;
- PHYSFS_uint8 gap_size;
- ISOBB16bit(vol_seq_no)
- PHYSFS_uint8 len_fi;
- char unused;
-} ISO9660RootDirectoryRecord;
-
-/* this structure is combined for all Volume descriptor types */
-typedef struct
-{
- PHYSFS_uint8 type;
- char identifier[5];
- PHYSFS_uint8 version;
- PHYSFS_uint8 flags;
- char system_identifier[32];
- char volume_identifier[32];
- char unused2[8];
- ISOBB32bit(space_size)
- PHYSFS_uint8 escape_sequences[32];
- ISOBB16bit(vol_set_size)
- ISOBB16bit(vol_seq_no)
- ISOBB16bit(block_size)
- ISOBB32bit(path_table_size)
-/* PHYSFS_uint32 path_table_start_lsb; // why didn't they use both byte type?
- PHYSFS_uint32 opt_path_table_start_lsb;
- PHYSFS_uint32 path_table_start_msb;
- PHYSFS_uint32 opt_path_table_start_msb;*/
-#if PHYSFS_BYTEORDER == PHYSFS_LIL_ENDIAN
- PHYSFS_uint32 path_table_start;
- PHYSFS_uint32 opt_path_table_start;
- PHYSFS_uint32 unused6;
- PHYSFS_uint32 unused7;
-#else
- PHYSFS_uint32 unused6;
- PHYSFS_uint32 unused7;
- PHYSFS_uint32 path_table_start;
- PHYSFS_uint32 opt_path_table_start;
-#endif
- ISO9660RootDirectoryRecord rootdirectory;
- char set_identifier[128];
- char publisher_identifier[128];
- char preparer_identifer[128];
- char application_identifier[128];
- char copyright_file_identifier[37];
- char abstract_file_identifier[37];
- char bibliographic_file_identifier[37];
- ISO9660VolumeTimestamp creation_timestamp;
- ISO9660VolumeTimestamp modification_timestamp;
- ISO9660VolumeTimestamp expiration_timestamp;
- ISO9660VolumeTimestamp effective_timestamp;
- PHYSFS_uint8 file_structure_version;
- char unused4;
- char application_use[512];
- char unused5[653];
-} ISO9660VolumeDescriptor;
-
-typedef struct
-{
- PHYSFS_uint8 recordlen;
- PHYSFS_uint8 extattributelen;
- ISOBB32bit(extentpos)
- ISOBB32bit(datalen)
- ISO9660FileTimestamp recordtime;
- ISO9660FileFlags flags;
- PHYSFS_uint8 file_unit_size;
- PHYSFS_uint8 interleave_gap;
- ISOBB16bit(volseqno)
- PHYSFS_uint8 filenamelen;
- char filename[222]; /* This is not exact, but makes reading easier */
-} ISO9660FileDescriptor;
-
-typedef struct
-{
- ISOBB16bit(owner)
- ISOBB16bit(group)
- PHYSFS_uint16 flags; /* not implemented*/
- ISO9660VolumeTimestamp create_time; /* yes, not file timestamp */
- ISO9660VolumeTimestamp mod_time;
- ISO9660VolumeTimestamp expire_time;
- ISO9660VolumeTimestamp effective_time;
- PHYSFS_uint8 record_format;
- PHYSFS_uint8 record_attributes;
- ISOBB16bit(record_len)
- char system_identifier[32];
- char system_use[64];
- PHYSFS_uint8 version;
- ISOBB16bit(escape_len)
- char reserved[64];
- /** further fields not implemented */
-} ISO9660ExtAttributeRec;
-
-#pragma pack(pop) /* restore original alignment from stack */
-
-typedef struct
-{
- PHYSFS_Io *io;
- PHYSFS_uint32 rootdirstart;
- PHYSFS_uint32 rootdirsize;
- PHYSFS_uint64 currpos;
- int isjoliet;
- char *path;
- void *mutex;
-} ISO9660Handle;
-
-
-typedef struct __ISO9660FileHandle
-{
- PHYSFS_sint64 filesize;
- PHYSFS_uint64 currpos;
- PHYSFS_uint64 startblock;
- ISO9660Handle *isohandle;
- PHYSFS_uint32 (*read) (struct __ISO9660FileHandle *filehandle, void *buffer,
- PHYSFS_uint64 len);
- int (*seek)(struct __ISO9660FileHandle *filehandle, PHYSFS_sint64 offset);
- void (*close)(struct __ISO9660FileHandle *filehandle);
- /* !!! FIXME: anonymouse union is going to cause problems. */
- union
- {
- /* !!! FIXME: just use a memory PHYSFS_Io here, unify all this code. */
- char *cacheddata; /* data of file when cached */
- PHYSFS_Io *io; /* handle to separate opened file */
- };
-} ISO9660FileHandle;
-
-/*******************************************************************************
- * Time conversion functions
- ******************************************************************************/
-
-static PHYSFS_sint64 iso_mktime(ISO9660FileTimestamp *timestamp)
-{
- struct tm tm;
- tm.tm_year = timestamp->year;
- tm.tm_mon = timestamp->month - 1;
- tm.tm_mday = timestamp->day;
- tm.tm_hour = timestamp->hour;
- tm.tm_min = timestamp->minute;
- tm.tm_sec = timestamp->second;
- /* Ignore GMT offset for now... */
- return mktime(&tm);
-} /* iso_mktime */
-
-static int iso_atoi2(char *text)
-{
- return ((text[0] - 40) * 10) + (text[1] - 40);
-} /* iso_atoi2 */
-
-static int iso_atoi4(char *text)
-{
- return ((text[0] - 40) * 1000) + ((text[1] - 40) * 100) +
- ((text[2] - 40) * 10) + (text[3] - 40);
-} /* iso_atoi4 */
-
-static PHYSFS_sint64 iso_volume_mktime(ISO9660VolumeTimestamp *timestamp)
-{
- struct tm tm;
- tm.tm_year = iso_atoi4(timestamp->year);
- tm.tm_mon = iso_atoi2(timestamp->month) - 1;
- tm.tm_mday = iso_atoi2(timestamp->day);
- tm.tm_hour = iso_atoi2(timestamp->hour);
- tm.tm_min = iso_atoi2(timestamp->minute);
- tm.tm_sec = iso_atoi2(timestamp->second);
- /* this allows values outside the range of a unix timestamp... sanitize them */
- PHYSFS_sint64 value = mktime(&tm);
- return value == -1 ? 0 : value;
-} /* iso_volume_mktime */
-
-/*******************************************************************************
- * Filename extraction
- ******************************************************************************/
-
-static int iso_extractfilenameISO(ISO9660FileDescriptor *descriptor,
- char *filename, int *version)
-{
- *filename = '\0';
- if (descriptor->flags.directory)
- {
- strncpy(filename, descriptor->filename, descriptor->filenamelen);
- filename[descriptor->filenamelen] = '\0';
- *version = 0;
- } /* if */
- else
- {
- /* find last SEPARATOR2 */
- int pos = 0;
- int lastfound = -1;
- for(;pos < descriptor->filenamelen; pos++)
- if (descriptor->filename[pos] == ';')
- lastfound = pos;
- BAIL_IF_MACRO(lastfound < 1, PHYSFS_ERR_NOT_FOUND /* !!! FIXME: PHYSFS_ERR_BAD_FILENAME */, -1);
- BAIL_IF_MACRO(lastfound == (descriptor->filenamelen -1), PHYSFS_ERR_NOT_FOUND /* !!! PHYSFS_ERR_BAD_FILENAME */, -1);
- strncpy(filename, descriptor->filename, lastfound);
- if (filename[lastfound - 1] == '.')
- filename[lastfound - 1] = '\0'; /* consume trailing ., as done in all implementations */
- else
- filename[lastfound] = '\0';
- *version = atoi(descriptor->filename + lastfound);
- } /* else */
-
- return 0;
-} /* iso_extractfilenameISO */
-
-
-static int iso_extractfilenameUCS2(ISO9660FileDescriptor *descriptor,
- char *filename, int *version)
-{
- PHYSFS_uint16 tmp[128];
- PHYSFS_uint16 *src;
- int len;
-
- *filename = '\0';
- *version = 1; /* Joliet does not have versions.. at least not on my images */
-
- src = (PHYSFS_uint16*) descriptor->filename;
- len = descriptor->filenamelen / 2;
- tmp[len] = 0;
-
- while(len--)
- tmp[len] = PHYSFS_swapUBE16(src[len]);
-
- PHYSFS_utf8FromUcs2(tmp, filename, 255);
-
- return 0;
-} /* iso_extractfilenameUCS2 */
-
-
-static int iso_extractfilename(ISO9660Handle *handle,
- ISO9660FileDescriptor *descriptor, char *filename,int *version)
-{
- if (handle->isjoliet)
- return iso_extractfilenameUCS2(descriptor, filename, version);
- else
- return iso_extractfilenameISO(descriptor, filename, version);
-} /* iso_extractfilename */
-
-/*******************************************************************************
- * Basic image read functions
- ******************************************************************************/
-
-static int iso_readimage(ISO9660Handle *handle, PHYSFS_uint64 where,
- void *buffer, PHYSFS_uint64 len)
-{
- BAIL_IF_MACRO(!__PHYSFS_platformGrabMutex(handle->mutex), ERRPASS, -1);
- int rc = -1;
- if (where != handle->currpos)
- GOTO_IF_MACRO(!handle->io->seek(handle->io,where), ERRPASS, unlockme);
- rc = handle->io->read(handle->io, buffer, len);
- if (rc == -1)
- {
- handle->currpos = (PHYSFS_uint64) -1;
- goto unlockme;
- } /* if */
- handle->currpos += rc;
-
- unlockme:
- __PHYSFS_platformReleaseMutex(handle->mutex);
- return rc;
-} /* iso_readimage */
-
-
-static PHYSFS_sint64 iso_readfiledescriptor(ISO9660Handle *handle,
- PHYSFS_uint64 where,
- ISO9660FileDescriptor *descriptor)
-{
- PHYSFS_sint64 rc = iso_readimage(handle, where, descriptor,
- sizeof (descriptor->recordlen));
- BAIL_IF_MACRO(rc == -1, ERRPASS, -1);
- BAIL_IF_MACRO(rc != 1, PHYSFS_ERR_CORRUPT, -1);
-
- if (descriptor->recordlen == 0)
- return 0; /* fill bytes at the end of a sector */
-
- rc = iso_readimage(handle, where + 1, &descriptor->extattributelen,
- descriptor->recordlen - sizeof(descriptor->recordlen));
- BAIL_IF_MACRO(rc == -1, ERRPASS, -1);
- BAIL_IF_MACRO(rc != 1, PHYSFS_ERR_CORRUPT, -1);
-
- return 0;
-} /* iso_readfiledescriptor */
-
-static void iso_extractsubpath(char *path, char **subpath)
-{
- *subpath = strchr(path,'/');
- if (*subpath != 0)
- {
- **subpath = 0;
- *subpath +=1;
- } /* if */
-} /* iso_extractsubpath */
-
-/*
- * Don't use path tables, they are not necessarily faster, but more complicated
- * to implement as they store only directories and not files, so searching for
- * a file needs to branch to the directory extent sooner or later.
- */
-static int iso_find_dir_entry(ISO9660Handle *handle,const char *path,
- ISO9660FileDescriptor *descriptor)
-{
- char *subpath = 0;
- PHYSFS_uint64 readpos, end_of_dir;
- char filename[255];
- char pathcopy[256];
- char *mypath;
- int version = 0;
-
- strcpy(pathcopy, path);
- mypath = pathcopy;
-
- readpos = handle->rootdirstart;
- end_of_dir = handle->rootdirstart + handle->rootdirsize;
- iso_extractsubpath(mypath, &subpath);
- while (1)
- {
- BAIL_IF_MACRO(iso_readfiledescriptor(handle, readpos, descriptor), ERRPASS, -1);
-
- /* recordlen = 0 -> no more entries or fill entry */
- if (!descriptor->recordlen)
- {
- /* if we are in the last sector of the directory & it's 0 -> end */
- if ((end_of_dir - 2048) <= (readpos -1))
- break; /* finished */
-
- /* else skip to the next sector & continue; */
- readpos = (((readpos - 1) / 2048) + 1) * 2048;
- continue;
- } /* if */
-
- readpos += descriptor->recordlen;
- if (descriptor->filenamelen == 1 && (descriptor->filename[0] == 0
- || descriptor->filename[0] == 1))
- continue; /* special ones, ignore */
-
- BAIL_IF_MACRO(
- iso_extractfilename(handle, descriptor, filename, &version),
- ERRPASS, -1);
-
- if (strcmp(filename, mypath) == 0)
- {
- if ( (subpath == 0) || (subpath[0] == 0) )
- return 0; /* no subpaths left and we found the entry */
-
- if (descriptor->flags.directory)
- {
- /* shorten the path to the subpath */
- mypath = subpath;
- iso_extractsubpath(mypath, &subpath);
- /* gosub to the new directory extent */
- readpos = descriptor->extentpos * 2048;
- end_of_dir = readpos + descriptor->datalen;
- } /* if */
- else
- {
- /* !!! FIXME: set PHYSFS_ERR_NOT_FOUND? */
- /* we're at a file but have a remaining subpath -> no match */
- return 0;
- } /* else */
- } /* if */
- } /* while */
-
- /* !!! FIXME: set PHYSFS_ERR_NOT_FOUND? */
- return 0;
-} /* iso_find_dir_entry */
-
-
-static int iso_read_ext_attributes(ISO9660Handle *handle, int block,
- ISO9660ExtAttributeRec *attributes)
-{
- return iso_readimage(handle, block * 2048, attributes,
- sizeof(ISO9660ExtAttributeRec));
-} /* iso_read_ext_attributes */
-
-
-static int ISO9660_flush(PHYSFS_Io *io) { return 1; /* no write support. */ }
-
-static PHYSFS_Io *ISO9660_duplicate(PHYSFS_Io *_io)
-{
- BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL); /* !!! FIXME: write me. */
-} /* ISO9660_duplicate */
-
-
-static void ISO9660_destroy(PHYSFS_Io *io)
-{
- ISO9660FileHandle *fhandle = (ISO9660FileHandle*) io->opaque;
- fhandle->close(fhandle);
- allocator.Free(io);
-} /* ISO9660_destroy */
-
-
-static PHYSFS_sint64 ISO9660_read(PHYSFS_Io *io, void *buf, PHYSFS_uint64 len)
-{
- ISO9660FileHandle *fhandle = (ISO9660FileHandle*) io->opaque;
- return fhandle->read(fhandle, buf, len);
-} /* ISO9660_read */
-
-
-static PHYSFS_sint64 ISO9660_write(PHYSFS_Io *io, const void *b, PHYSFS_uint64 l)
-{
- BAIL_MACRO(PHYSFS_ERR_READ_ONLY, -1);
-} /* ISO9660_write */
-
-
-static PHYSFS_sint64 ISO9660_tell(PHYSFS_Io *io)
-{
- return ((ISO9660FileHandle*) io->opaque)->currpos;
-} /* ISO9660_tell */
-
-
-static int ISO9660_seek(PHYSFS_Io *io, PHYSFS_uint64 offset)
-{
- ISO9660FileHandle *fhandle = (ISO9660FileHandle*) io->opaque;
- return fhandle->seek(fhandle, offset);
-} /* ISO9660_seek */
-
-
-static PHYSFS_sint64 ISO9660_length(PHYSFS_Io *io)
-{
- return ((ISO9660FileHandle*) io->opaque)->filesize;
-} /* ISO9660_length */
-
-
-static const PHYSFS_Io ISO9660_Io =
-{
- CURRENT_PHYSFS_IO_API_VERSION, NULL,
- ISO9660_read,
- ISO9660_write,
- ISO9660_seek,
- ISO9660_tell,
- ISO9660_length,
- ISO9660_duplicate,
- ISO9660_flush,
- ISO9660_destroy
-};
-
-
-/*******************************************************************************
- * Archive management functions
- ******************************************************************************/
-
-static void *ISO9660_openArchive(PHYSFS_Io *io, const char *filename, int forWriting)
-{
- char magicnumber[6];
- ISO9660Handle *handle;
- int founddescriptor = 0;
- int foundjoliet = 0;
-
- assert(io != NULL); /* shouldn't ever happen. */
-
- BAIL_IF_MACRO(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
-
- /* Skip system area to magic number in Volume descriptor */
- BAIL_IF_MACRO(!io->seek(io, 32769), ERRPASS, NULL);
- BAIL_IF_MACRO(io->read(io, magicnumber, 5) != 5, ERRPASS, NULL);
- if (memcmp(magicnumber, "CD001", 6) != 0)
- BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL);
-
- handle = allocator.Malloc(sizeof(ISO9660Handle));
- GOTO_IF_MACRO(!handle, PHYSFS_ERR_OUT_OF_MEMORY, errorcleanup);
- handle->path = 0;
- handle->mutex= 0;
- handle->io = NULL;
-
- handle->path = allocator.Malloc(strlen(filename) + 1);
- GOTO_IF_MACRO(!handle->path, PHYSFS_ERR_OUT_OF_MEMORY, errorcleanup);
- strcpy(handle->path, filename);
-
- handle->mutex = __PHYSFS_platformCreateMutex();
- GOTO_IF_MACRO(!handle->mutex, ERRPASS, errorcleanup);
-
- handle->io = io;
-
- /* seek Primary Volume Descriptor */
- GOTO_IF_MACRO(!io->seek(io, 32768), PHYSFS_ERR_IO, errorcleanup);
-
- while (1)
- {
- ISO9660VolumeDescriptor descriptor;
- GOTO_IF_MACRO(io->read(io, &descriptor, sizeof(ISO9660VolumeDescriptor)) != sizeof(ISO9660VolumeDescriptor), PHYSFS_ERR_IO, errorcleanup);
- GOTO_IF_MACRO(strncmp(descriptor.identifier, "CD001", 5) != 0, PHYSFS_ERR_UNSUPPORTED, errorcleanup);
-
- if (descriptor.type == 255)
- {
- /* type 255 terminates the volume descriptor list */
- if (founddescriptor)
- return handle; /* ok, we've found one volume descriptor */
- else
- GOTO_MACRO(PHYSFS_ERR_CORRUPT, errorcleanup);
- } /* if */
- if (descriptor.type == 1 && !founddescriptor)
- {
- handle->currpos = io->tell(io);
- handle->rootdirstart =
- descriptor.rootdirectory.extent_location * 2048;
- handle->rootdirsize =
- descriptor.rootdirectory.data_length;
- handle->isjoliet = 0;
- founddescriptor = 1; /* continue search for joliet */
- } /* if */
- if (descriptor.type == 2 && !foundjoliet)
- {
- /* check if is joliet */
- PHYSFS_uint8 *s = descriptor.escape_sequences;
- int joliet = !(descriptor.flags & 1)
- && (s[0] == 0x25)
- && (s[1] == 0x2F)
- && ((s[2] == 0x40) || (s[2] == 0x43) || (s[2] == 0x45));
- if (!joliet)
- continue;
-
- handle->currpos = io->tell(io);
- handle->rootdirstart =
- descriptor.rootdirectory.extent_location * 2048;
- handle->rootdirsize =
- descriptor.rootdirectory.data_length;
- handle->isjoliet = 1;
- founddescriptor = 1;
- foundjoliet = 1;
- } /* if */
- } /* while */
-
- GOTO_MACRO(PHYSFS_ERR_CORRUPT, errorcleanup); /* not found. */
-
-errorcleanup:
- if (handle)
- {
- if (handle->path)
- allocator.Free(handle->path);
- if (handle->mutex)
- __PHYSFS_platformDestroyMutex(handle->mutex);
- allocator.Free(handle);
- } /* if */
- return NULL;
-} /* ISO9660_openArchive */
-
-
-static void ISO9660_closeArchive(void *opaque)
-{
- ISO9660Handle *handle = (ISO9660Handle*) opaque;
- handle->io->destroy(handle->io);
- __PHYSFS_platformDestroyMutex(handle->mutex);
- allocator.Free(handle->path);
- allocator.Free(handle);
-} /* ISO9660_closeArchive */
-
-
-/*******************************************************************************
- * Read functions
- ******************************************************************************/
-
-
-static PHYSFS_uint32 iso_file_read_mem(ISO9660FileHandle *filehandle,
- void *buffer, PHYSFS_uint64 len)
-{
- /* check remaining bytes & max obj which can be fetched */
- const PHYSFS_sint64 bytesleft = filehandle->filesize - filehandle->currpos;
- if (bytesleft < len)
- len = bytesleft;
-
- if (len == 0)
- return 0;
-
- memcpy(buffer, filehandle->cacheddata + filehandle->currpos, (size_t) len);
-
- filehandle->currpos += len;
- return (PHYSFS_uint32) len;
-} /* iso_file_read_mem */
-
-
-static int iso_file_seek_mem(ISO9660FileHandle *fhandle, PHYSFS_sint64 offset)
-{
- BAIL_IF_MACRO(offset < 0, PHYSFS_ERR_INVALID_ARGUMENT, 0);
- BAIL_IF_MACRO(offset >= fhandle->filesize, PHYSFS_ERR_PAST_EOF, 0);
-
- fhandle->currpos = offset;
- return 0;
-} /* iso_file_seek_mem */
-
-
-static void iso_file_close_mem(ISO9660FileHandle *fhandle)
-{
- allocator.Free(fhandle->cacheddata);
- allocator.Free(fhandle);
-} /* iso_file_close_mem */
-
-
-static PHYSFS_uint32 iso_file_read_foreign(ISO9660FileHandle *filehandle,
- void *buffer, PHYSFS_uint64 len)
-{
- /* check remaining bytes & max obj which can be fetched */
- const PHYSFS_sint64 bytesleft = filehandle->filesize - filehandle->currpos;
- if (bytesleft < len)
- len = bytesleft;
-
- const PHYSFS_sint64 rc = filehandle->io->read(filehandle->io, buffer, len);
- BAIL_IF_MACRO(rc == -1, ERRPASS, -1);
-
- filehandle->currpos += rc; /* i trust my internal book keeping */
- BAIL_IF_MACRO(rc < len, PHYSFS_ERR_CORRUPT, -1);
- return rc;
-} /* iso_file_read_foreign */
-
-
-static int iso_file_seek_foreign(ISO9660FileHandle *fhandle,
- PHYSFS_sint64 offset)
-{
- BAIL_IF_MACRO(offset < 0, PHYSFS_ERR_INVALID_ARGUMENT, 0);
- BAIL_IF_MACRO(offset >= fhandle->filesize, PHYSFS_ERR_PAST_EOF, 0);
-
- PHYSFS_sint64 pos = fhandle->startblock * 2048 + offset;
- BAIL_IF_MACRO(!fhandle->io->seek(fhandle->io, pos), ERRPASS, -1);
-
- fhandle->currpos = offset;
- return 0;
-} /* iso_file_seek_foreign */
-
-
-static void iso_file_close_foreign(ISO9660FileHandle *fhandle)
-{
- fhandle->io->destroy(fhandle->io);
- allocator.Free(fhandle);
-} /* iso_file_close_foreign */
-
-
-static int iso_file_open_mem(ISO9660Handle *handle, ISO9660FileHandle *fhandle)
-{
- fhandle->cacheddata = allocator.Malloc(fhandle->filesize);
- BAIL_IF_MACRO(!fhandle->cacheddata, PHYSFS_ERR_OUT_OF_MEMORY, -1);
- int rc = iso_readimage(handle, fhandle->startblock * 2048,
- fhandle->cacheddata, fhandle->filesize);
- GOTO_IF_MACRO(rc < 0, ERRPASS, freemem);
- GOTO_IF_MACRO(rc == 0, PHYSFS_ERR_CORRUPT, freemem);
-
- fhandle->read = iso_file_read_mem;
- fhandle->seek = iso_file_seek_mem;
- fhandle->close = iso_file_close_mem;
- return 0;
-
-freemem:
- allocator.Free(fhandle->cacheddata);
- return -1;
-} /* iso_file_open_mem */
-
-
-static int iso_file_open_foreign(ISO9660Handle *handle,
- ISO9660FileHandle *fhandle)
-{
- int rc;
- fhandle->io = __PHYSFS_createNativeIo(handle->path, 'r');
- BAIL_IF_MACRO(!fhandle->io, ERRPASS, -1);
- rc = fhandle->io->seek(fhandle->io, fhandle->startblock * 2048);
- GOTO_IF_MACRO(!rc, ERRPASS, closefile);
-
- fhandle->read = iso_file_read_foreign;
- fhandle->seek = iso_file_seek_foreign;
- fhandle->close = iso_file_close_foreign;
- return 0;
-
-closefile:
- fhandle->io->destroy(fhandle->io);
- return -1;
-} /* iso_file_open_foreign */
-
-
-static PHYSFS_Io *ISO9660_openRead(void *opaque, const char *filename)
-{
- PHYSFS_Io *retval = NULL;
- ISO9660Handle *handle = (ISO9660Handle*) opaque;
- ISO9660FileHandle *fhandle;
- ISO9660FileDescriptor descriptor;
- int rc;
-
- fhandle = allocator.Malloc(sizeof(ISO9660FileHandle));
- BAIL_IF_MACRO(fhandle == 0, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
- fhandle->cacheddata = 0;
-
- retval = allocator.Malloc(sizeof(PHYSFS_Io));
- GOTO_IF_MACRO(retval == 0, PHYSFS_ERR_OUT_OF_MEMORY, errorhandling);
-
- /* find file descriptor */
- rc = iso_find_dir_entry(handle, filename, &descriptor);
- GOTO_IF_MACRO(rc, ERRPASS, errorhandling);
-
- fhandle->startblock = descriptor.extentpos + descriptor.extattributelen;
- fhandle->filesize = descriptor.datalen;
- fhandle->currpos = 0;
- fhandle->isohandle = handle;
- fhandle->cacheddata = NULL;
- fhandle->io = NULL;
-
- if (descriptor.datalen <= ISO9660_FULLCACHEMAXSIZE)
- rc = iso_file_open_mem(handle, fhandle);
- else
- rc = iso_file_open_foreign(handle, fhandle);
- GOTO_IF_MACRO(rc, ERRPASS, errorhandling);
-
- memcpy(retval, &ISO9660_Io, sizeof (PHYSFS_Io));
- retval->opaque = fhandle;
- return retval;
-
-errorhandling:
- if (retval) allocator.Free(retval);
- if (fhandle) allocator.Free(fhandle);
- return NULL;
-} /* ISO9660_openRead */
-
-
-
-/*******************************************************************************
- * Information gathering functions
- ******************************************************************************/
-
-static void ISO9660_enumerateFiles(void *opaque, const char *dname,
- PHYSFS_EnumFilesCallback cb,
- const char *origdir, void *callbackdata)
-{
- ISO9660Handle *handle = (ISO9660Handle*) opaque;
- ISO9660FileDescriptor descriptor;
- PHYSFS_uint64 readpos;
- PHYSFS_uint64 end_of_dir;
- char filename[130]; /* ISO allows 31, Joliet 128 -> 128 + 2 eol bytes */
- int version = 0;
-
- if (*dname == '\0')
- {
- readpos = handle->rootdirstart;
- end_of_dir = readpos + handle->rootdirsize;
- } /* if */
- else
- {
- printf("pfad %s\n",dname);
- BAIL_IF_MACRO(iso_find_dir_entry(handle,dname, &descriptor), ERRPASS,);
- BAIL_IF_MACRO(!descriptor.flags.directory, ERRPASS,);
-
- readpos = descriptor.extentpos * 2048;
- end_of_dir = readpos + descriptor.datalen;
- } /* else */
-
- while (1)
- {
- BAIL_IF_MACRO(iso_readfiledescriptor(handle, readpos, &descriptor), ERRPASS, );
-
- /* recordlen = 0 -> no more entries or fill entry */
- if (!descriptor.recordlen)
- {
- /* if we are in the last sector of the directory & it's 0 -> end */
- if ((end_of_dir - 2048) <= (readpos -1))
- break; /* finished */
-
- /* else skip to the next sector & continue; */
- readpos = (((readpos - 1) / 2048) + 1) * 2048;
- continue;
- } /* if */
-
- readpos += descriptor.recordlen;
- if (descriptor.filenamelen == 1 && (descriptor.filename[0] == 0
- || descriptor.filename[0] == 1))
- continue; /* special ones, ignore */
-
- strncpy(filename,descriptor.filename,descriptor.filenamelen);
- iso_extractfilename(handle, &descriptor, filename, &version);
- cb(callbackdata, origdir,filename);
- } /* while */
-} /* ISO9660_enumerateFiles */
-
-
-static int ISO9660_stat(void *opaque, const char *name, PHYSFS_Stat *stat)
-{
- ISO9660Handle *handle = (ISO9660Handle*) opaque;
- ISO9660FileDescriptor descriptor;
- ISO9660ExtAttributeRec extattr;
- BAIL_IF_MACRO(iso_find_dir_entry(handle, name, &descriptor), ERRPASS, -1);
-
- stat->readonly = 1;
-
- /* try to get extended info */
- if (descriptor.extattributelen)
- {
- BAIL_IF_MACRO(iso_read_ext_attributes(handle,
- descriptor.extentpos, &extattr), ERRPASS, -1);
- stat->createtime = iso_volume_mktime(&extattr.create_time);
- stat->modtime = iso_volume_mktime(&extattr.mod_time);
- stat->accesstime = iso_volume_mktime(&extattr.mod_time);
- } /* if */
- else
- {
- stat->createtime = iso_mktime(&descriptor.recordtime);
- stat->modtime = iso_mktime(&descriptor.recordtime);
- stat->accesstime = iso_mktime(&descriptor.recordtime);
- } /* else */
-
- if (descriptor.flags.directory)
- {
- stat->filesize = 0;
- stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
- } /* if */
- else
- {
- stat->filesize = descriptor.datalen;
- stat->filetype = PHYSFS_FILETYPE_REGULAR;
- } /* else */
-
- return 1;
-} /* ISO9660_stat */
-
-
-/*******************************************************************************
- * Not supported functions
- ******************************************************************************/
-
-static PHYSFS_Io *ISO9660_openWrite(void *opaque, const char *name)
-{
- BAIL_MACRO(PHYSFS_ERR_READ_ONLY, NULL);
-} /* ISO9660_openWrite */
-
-
-static PHYSFS_Io *ISO9660_openAppend(void *opaque, const char *name)
-{
- BAIL_MACRO(PHYSFS_ERR_READ_ONLY, NULL);
-} /* ISO9660_openAppend */
-
-
-static int ISO9660_remove(void *opaque, const char *name)
-{
- BAIL_MACRO(PHYSFS_ERR_READ_ONLY, 0);
-} /* ISO9660_remove */
-
-
-static int ISO9660_mkdir(void *opaque, const char *name)
-{
- BAIL_MACRO(PHYSFS_ERR_READ_ONLY, 0);
-} /* ISO9660_mkdir */
-
-
-const PHYSFS_Archiver __PHYSFS_Archiver_ISO9660 =
-{
- CURRENT_PHYSFS_ARCHIVER_API_VERSION,
- {
- "ISO",
- "ISO9660 image file",
- "Christoph Nelles <evilazrael@evilazrael.de>",
- "https://www.evilazrael.de/",
- 0, /* supportsSymlinks */
- },
- ISO9660_openArchive,
- ISO9660_enumerateFiles,
- ISO9660_openRead,
- ISO9660_openWrite,
- ISO9660_openAppend,
- ISO9660_remove,
- ISO9660_mkdir,
- ISO9660_stat,
- ISO9660_closeArchive
-};
-
-#endif /* defined PHYSFS_SUPPORTS_ISO9660 */
-
-/* end of archiver_iso9660.c ... */
-