--- /dev/null
+/*
+ * ZIP support routines for PhysicsFS.
+ *
+ * Please see the file LICENSE.txt in the source's root directory.
+ *
+ * This file written by Ryan C. Gordon, with some peeking at "unzip.c"
+ * by Gilles Vollant.
+ */
+
+#if (defined PHYSFS_SUPPORTS_ZIP)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef _WIN32_WCE
+#include <errno.h>
+#include <time.h>
+#endif
+#include "physfs.h"
+#include "zlib.h"
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+/*
+ * A buffer of ZIP_READBUFSIZE is allocated for each compressed file opened,
+ * and is freed when you close the file; compressed data is read into
+ * this buffer, and then is decompressed into the buffer passed to
+ * PHYSFS_read().
+ *
+ * Uncompressed entries in a zipfile do not allocate this buffer; they just
+ * read data directly into the buffer passed to PHYSFS_read().
+ *
+ * Depending on your speed and memory requirements, you should tweak this
+ * value.
+ */
+#define ZIP_READBUFSIZE (16 * 1024)
+
+
+/*
+ * Entries are "unresolved" until they are first opened. At that time,
+ * local file headers parsed/validated, data offsets will be updated to look
+ * at the actual file data instead of the header, and symlinks will be
+ * followed and optimized. This means that we don't seek and read around the
+ * archive until forced to do so, and after the first time, we had to do
+ * less reading and parsing, which is very CD-ROM friendly.
+ */
+typedef enum
+{
+ ZIP_UNRESOLVED_FILE,
+ ZIP_UNRESOLVED_SYMLINK,
+ ZIP_RESOLVING,
+ ZIP_RESOLVED,
+ ZIP_BROKEN_FILE,
+ ZIP_BROKEN_SYMLINK
+} ZipResolveType;
+
+
+/*
+ * One ZIPentry is kept for each file in an open ZIP archive.
+ */
+typedef struct _ZIPentry
+{
+ char *name; /* Name of file in archive */
+ struct _ZIPentry *symlink; /* NULL or file we symlink to */
+ ZipResolveType resolved; /* Have we resolved file/symlink? */
+ PHYSFS_uint32 offset; /* offset of data in archive */
+ PHYSFS_uint16 version; /* version made by */
+ PHYSFS_uint16 version_needed; /* version needed to extract */
+ PHYSFS_uint16 compression_method; /* compression method */
+ PHYSFS_uint32 crc; /* crc-32 */
+ PHYSFS_uint32 compressed_size; /* compressed size */
+ PHYSFS_uint32 uncompressed_size; /* uncompressed size */
+ PHYSFS_sint64 last_mod_time; /* last file mod time */
+} ZIPentry;
+
+/*
+ * One ZIPinfo is kept for each open ZIP archive.
+ */
+typedef struct
+{
+ char *archiveName; /* path to ZIP in platform-dependent notation. */
+ PHYSFS_uint16 entryCount; /* Number of files in ZIP. */
+ ZIPentry *entries; /* info on all files in ZIP. */
+} ZIPinfo;
+
+/*
+ * One ZIPfileinfo is kept for each open file in a ZIP archive.
+ */
+typedef struct
+{
+ ZIPentry *entry; /* Info on file. */
+ void *handle; /* physical file handle. */
+ PHYSFS_uint32 compressed_position; /* offset in compressed data. */
+ PHYSFS_uint32 uncompressed_position; /* tell() position. */
+ PHYSFS_uint8 *buffer; /* decompression buffer. */
+ z_stream stream; /* zlib stream state. */
+} ZIPfileinfo;
+
+
+/* Magic numbers... */
+#define ZIP_LOCAL_FILE_SIG 0x04034b50
+#define ZIP_CENTRAL_DIR_SIG 0x02014b50
+#define ZIP_END_OF_CENTRAL_DIR_SIG 0x06054b50
+
+/* compression methods... */
+#define COMPMETH_NONE 0
+/* ...and others... */
+
+
+#define UNIX_FILETYPE_MASK 0170000
+#define UNIX_FILETYPE_SYMLINK 0120000
+
+
+/*
+ * Bridge physfs allocation functions to zlib's format...
+ */
+static voidpf zlibPhysfsAlloc(voidpf opaque, uInt items, uInt size)
+{
+ return(((PHYSFS_Allocator *) opaque)->Malloc(items * size));
+} /* zlibPhysfsAlloc */
+
+/*
+ * Bridge physfs allocation functions to zlib's format...
+ */
+static void zlibPhysfsFree(voidpf opaque, voidpf address)
+{
+ ((PHYSFS_Allocator *) opaque)->Free(address);
+} /* zlibPhysfsFree */
+
+
+/*
+ * Construct a new z_stream to a sane state.
+ */
+static void initializeZStream(z_stream *pstr)
+{
+ memset(pstr, '\0', sizeof (z_stream));
+ pstr->zalloc = zlibPhysfsAlloc;
+ pstr->zfree = zlibPhysfsFree;
+ pstr->opaque = &allocator;
+} /* initializeZStream */
+
+
+static const char *zlib_error_string(int rc)
+{
+ switch (rc)
+ {
+ case Z_OK: return(NULL); /* not an error. */
+ case Z_STREAM_END: return(NULL); /* not an error. */
+#ifndef _WIN32_WCE
+ case Z_ERRNO: return(strerror(errno));
+#endif
+ case Z_NEED_DICT: return(ERR_NEED_DICT);
+ case Z_DATA_ERROR: return(ERR_DATA_ERROR);
+ case Z_MEM_ERROR: return(ERR_MEMORY_ERROR);
+ case Z_BUF_ERROR: return(ERR_BUFFER_ERROR);
+ case Z_VERSION_ERROR: return(ERR_VERSION_ERROR);
+ default: return(ERR_UNKNOWN_ERROR);
+ } /* switch */
+
+ return(NULL);
+} /* zlib_error_string */
+
+
+/*
+ * Wrap all zlib calls in this, so the physfs error state is set appropriately.
+ */
+static int zlib_err(int rc)
+{
+ const char *str = zlib_error_string(rc);
+ if (str != NULL)
+ __PHYSFS_setError(str);
+ return(rc);
+} /* zlib_err */
+
+
+/*
+ * Read an unsigned 32-bit int and swap to native byte order.
+ */
+static int readui32(void *in, PHYSFS_uint32 *val)
+{
+ PHYSFS_uint32 v;
+ BAIL_IF_MACRO(__PHYSFS_platformRead(in, &v, sizeof (v), 1) != 1, NULL, 0);
+ *val = PHYSFS_swapULE32(v);
+ return(1);
+} /* readui32 */
+
+
+/*
+ * Read an unsigned 16-bit int and swap to native byte order.
+ */
+static int readui16(void *in, PHYSFS_uint16 *val)
+{
+ PHYSFS_uint16 v;
+ BAIL_IF_MACRO(__PHYSFS_platformRead(in, &v, sizeof (v), 1) != 1, NULL, 0);
+ *val = PHYSFS_swapULE16(v);
+ return(1);
+} /* readui16 */
+
+
+static PHYSFS_sint64 ZIP_read(fvoid *opaque, void *buf,
+ PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
+{
+ ZIPfileinfo *finfo = (ZIPfileinfo *) opaque;
+ ZIPentry *entry = finfo->entry;
+ PHYSFS_sint64 retval = 0;
+ PHYSFS_sint64 maxread = ((PHYSFS_sint64) objSize) * objCount;
+ PHYSFS_sint64 avail = entry->uncompressed_size -
+ finfo->uncompressed_position;
+
+ BAIL_IF_MACRO(maxread == 0, NULL, 0); /* quick rejection. */
+
+ if (avail < maxread)
+ {
+ maxread = avail - (avail % objSize);
+ objCount = (PHYSFS_uint32) (maxread / objSize);
+ BAIL_IF_MACRO(objCount == 0, ERR_PAST_EOF, 0); /* quick rejection. */
+ __PHYSFS_setError(ERR_PAST_EOF); /* this is always true here. */
+ } /* if */
+
+ if (entry->compression_method == COMPMETH_NONE)
+ {
+ retval = __PHYSFS_platformRead(finfo->handle, buf, objSize, objCount);
+ } /* if */
+
+ else
+ {
+ finfo->stream.next_out = buf;
+ finfo->stream.avail_out = objSize * objCount;
+
+ while (retval < maxread)
+ {
+ PHYSFS_uint32 before = finfo->stream.total_out;
+ int rc;
+
+ if (finfo->stream.avail_in == 0)
+ {
+ PHYSFS_sint64 br;
+
+ br = entry->compressed_size - finfo->compressed_position;
+ if (br > 0)
+ {
+ if (br > ZIP_READBUFSIZE)
+ br = ZIP_READBUFSIZE;
+
+ br = __PHYSFS_platformRead(finfo->handle,
+ finfo->buffer,
+ 1, (PHYSFS_uint32) br);
+ if (br <= 0)
+ break;
+
+ finfo->compressed_position += (PHYSFS_uint32) br;
+ finfo->stream.next_in = finfo->buffer;
+ finfo->stream.avail_in = (PHYSFS_uint32) br;
+ } /* if */
+ } /* if */
+
+ rc = zlib_err(inflate(&finfo->stream, Z_SYNC_FLUSH));
+ retval += (finfo->stream.total_out - before);
+
+ if (rc != Z_OK)
+ break;
+ } /* while */
+
+ retval /= objSize;
+ } /* else */
+
+ if (retval > 0)
+ finfo->uncompressed_position += (PHYSFS_uint32) (retval * objSize);
+
+ return(retval);
+} /* ZIP_read */
+
+
+static PHYSFS_sint64 ZIP_write(fvoid *opaque, const void *buf,
+ PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
+{
+ BAIL_MACRO(ERR_NOT_SUPPORTED, -1);
+} /* ZIP_write */
+
+
+static int ZIP_eof(fvoid *opaque)
+{
+ ZIPfileinfo *finfo = (ZIPfileinfo *) opaque;
+ return(finfo->uncompressed_position >= finfo->entry->uncompressed_size);
+} /* ZIP_eof */
+
+
+static PHYSFS_sint64 ZIP_tell(fvoid *opaque)
+{
+ return(((ZIPfileinfo *) opaque)->uncompressed_position);
+} /* ZIP_tell */
+
+
+static int ZIP_seek(fvoid *opaque, PHYSFS_uint64 offset)
+{
+ ZIPfileinfo *finfo = (ZIPfileinfo *) opaque;
+ ZIPentry *entry = finfo->entry;
+ void *in = finfo->handle;
+
+ BAIL_IF_MACRO(offset > entry->uncompressed_size, ERR_PAST_EOF, 0);
+
+ if (entry->compression_method == COMPMETH_NONE)
+ {
+ PHYSFS_sint64 newpos = offset + entry->offset;
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, newpos), NULL, 0);
+ finfo->uncompressed_position = (PHYSFS_uint32) offset;
+ } /* if */
+
+ else
+ {
+ /*
+ * If seeking backwards, we need to redecode the file
+ * from the start and throw away the compressed bits until we hit
+ * the offset we need. If seeking forward, we still need to
+ * decode, but we don't rewind first.
+ */
+ if (offset < finfo->uncompressed_position)
+ {
+ /* we do a copy so state is sane if inflateInit2() fails. */
+ z_stream str;
+ initializeZStream(&str);
+ if (zlib_err(inflateInit2(&str, -MAX_WBITS)) != Z_OK)
+ return(0);
+
+ if (!__PHYSFS_platformSeek(in, entry->offset))
+ return(0);
+
+ inflateEnd(&finfo->stream);
+ memcpy(&finfo->stream, &str, sizeof (z_stream));
+ finfo->uncompressed_position = finfo->compressed_position = 0;
+ } /* if */
+
+ while (finfo->uncompressed_position != offset)
+ {
+ PHYSFS_uint8 buf[512];
+ PHYSFS_uint32 maxread;
+
+ maxread = (PHYSFS_uint32) (offset - finfo->uncompressed_position);
+ if (maxread > sizeof (buf))
+ maxread = sizeof (buf);
+
+ if (ZIP_read(finfo, buf, maxread, 1) != 1)
+ return(0);
+ } /* while */
+ } /* else */
+
+ return(1);
+} /* ZIP_seek */
+
+
+static PHYSFS_sint64 ZIP_fileLength(fvoid *opaque)
+{
+ ZIPfileinfo *finfo = (ZIPfileinfo *) opaque;
+ return(finfo->entry->uncompressed_size);
+} /* ZIP_fileLength */
+
+
+static int ZIP_fileClose(fvoid *opaque)
+{
+ ZIPfileinfo *finfo = (ZIPfileinfo *) opaque;
+ BAIL_IF_MACRO(!__PHYSFS_platformClose(finfo->handle), NULL, 0);
+
+ if (finfo->entry->compression_method != COMPMETH_NONE)
+ inflateEnd(&finfo->stream);
+
+ if (finfo->buffer != NULL)
+ allocator.Free(finfo->buffer);
+
+ allocator.Free(finfo);
+ return(1);
+} /* ZIP_fileClose */
+
+
+static PHYSFS_sint64 zip_find_end_of_central_dir(void *in, PHYSFS_sint64 *len)
+{
+ PHYSFS_uint8 buf[256];
+ PHYSFS_uint8 extra[4] = { 0, 0, 0, 0 };
+ PHYSFS_sint32 i = 0;
+ PHYSFS_sint64 filelen;
+ PHYSFS_sint64 filepos;
+ PHYSFS_sint32 maxread;
+ PHYSFS_sint32 totalread = 0;
+ int found = 0;
+
+ filelen = __PHYSFS_platformFileLength(in);
+ BAIL_IF_MACRO(filelen == -1, NULL, 0); /* !!! FIXME: unlocalized string */
+ BAIL_IF_MACRO(filelen > 0xFFFFFFFF, "ZIP bigger than 2 gigs?!", 0);
+
+ /*
+ * Jump to the end of the file and start reading backwards.
+ * The last thing in the file is the zipfile comment, which is variable
+ * length, and the field that specifies its size is before it in the
+ * file (argh!)...this means that we need to scan backwards until we
+ * hit the end-of-central-dir signature. We can then sanity check that
+ * the comment was as big as it should be to make sure we're in the
+ * right place. The comment length field is 16 bits, so we can stop
+ * searching for that signature after a little more than 64k at most,
+ * and call it a corrupted zipfile.
+ */
+
+ if (sizeof (buf) < filelen)
+ {
+ filepos = filelen - sizeof (buf);
+ maxread = sizeof (buf);
+ } /* if */
+ else
+ {
+ filepos = 0;
+ maxread = (PHYSFS_uint32) filelen;
+ } /* else */
+
+ while ((totalread < filelen) && (totalread < 65557))
+ {
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, filepos), NULL, -1);
+
+ /* make sure we catch a signature between buffers. */
+ if (totalread != 0)
+ {
+ if (__PHYSFS_platformRead(in, buf, maxread - 4, 1) != 1)
+ return(-1);
+ memcpy(&buf[maxread - 4], &extra, sizeof (extra));
+ totalread += maxread - 4;
+ } /* if */
+ else
+ {
+ if (__PHYSFS_platformRead(in, buf, maxread, 1) != 1)
+ return(-1);
+ totalread += maxread;
+ } /* else */
+
+ memcpy(&extra, buf, sizeof (extra));
+
+ for (i = maxread - 4; i > 0; i--)
+ {
+ if ((buf[i + 0] == 0x50) &&
+ (buf[i + 1] == 0x4B) &&
+ (buf[i + 2] == 0x05) &&
+ (buf[i + 3] == 0x06) )
+ {
+ found = 1; /* that's the signature! */
+ break;
+ } /* if */
+ } /* for */
+
+ if (found)
+ break;
+
+ filepos -= (maxread - 4);
+ if (filepos < 0)
+ filepos = 0;
+ } /* while */
+
+ BAIL_IF_MACRO(!found, ERR_NOT_AN_ARCHIVE, -1);
+
+ if (len != NULL)
+ *len = filelen;
+
+ return(filepos + i);
+} /* zip_find_end_of_central_dir */
+
+
+static int ZIP_isArchive(const char *filename, int forWriting)
+{
+ PHYSFS_uint32 sig;
+ int retval = 0;
+ void *in;
+
+ in = __PHYSFS_platformOpenRead(filename);
+ BAIL_IF_MACRO(in == NULL, NULL, 0);
+
+ /*
+ * The first thing in a zip file might be the signature of the
+ * first local file record, so it makes for a quick determination.
+ */
+ if (readui32(in, &sig))
+ {
+ retval = (sig == ZIP_LOCAL_FILE_SIG);
+ if (!retval)
+ {
+ /*
+ * No sig...might be a ZIP with data at the start
+ * (a self-extracting executable, etc), so we'll have to do
+ * it the hard way...
+ */
+ retval = (zip_find_end_of_central_dir(in, NULL) != -1);
+ } /* if */
+ } /* if */
+
+ __PHYSFS_platformClose(in);
+ return(retval);
+} /* ZIP_isArchive */
+
+
+static void zip_free_entries(ZIPentry *entries, PHYSFS_uint32 max)
+{
+ PHYSFS_uint32 i;
+ for (i = 0; i < max; i++)
+ {
+ ZIPentry *entry = &entries[i];
+ if (entry->name != NULL)
+ allocator.Free(entry->name);
+ } /* for */
+
+ allocator.Free(entries);
+} /* zip_free_entries */
+
+
+/*
+ * This will find the ZIPentry associated with a path in platform-independent
+ * notation. Directories don't have ZIPentries associated with them, but
+ * (*isDir) will be set to non-zero if a dir was hit.
+ */
+static ZIPentry *zip_find_entry(ZIPinfo *info, const char *path, int *isDir)
+{
+ ZIPentry *a = info->entries;
+ PHYSFS_sint32 pathlen = strlen(path);
+ PHYSFS_sint32 lo = 0;
+ PHYSFS_sint32 hi = (PHYSFS_sint32) (info->entryCount - 1);
+ PHYSFS_sint32 middle;
+ const char *thispath = NULL;
+ int rc;
+
+ while (lo <= hi)
+ {
+ middle = lo + ((hi - lo) / 2);
+ thispath = a[middle].name;
+ rc = strncmp(path, thispath, pathlen);
+
+ if (rc > 0)
+ lo = middle + 1;
+
+ else if (rc < 0)
+ hi = middle - 1;
+
+ else /* substring match...might be dir or entry or nothing. */
+ {
+ if (isDir != NULL)
+ {
+ *isDir = (thispath[pathlen] == '/');
+ if (*isDir)
+ return(NULL);
+ } /* if */
+
+ if (thispath[pathlen] == '\0') /* found entry? */
+ return(&a[middle]);
+ /* adjust search params, try again. */
+ else if (thispath[pathlen] > '/')
+ hi = middle - 1;
+ else
+ lo = middle + 1;
+ } /* if */
+ } /* while */
+
+ if (isDir != NULL)
+ *isDir = 0;
+
+ BAIL_MACRO(ERR_NO_SUCH_FILE, NULL);
+} /* zip_find_entry */
+
+
+/* Convert paths from old, buggy DOS zippers... */
+static void zip_convert_dos_path(ZIPentry *entry, char *path)
+{
+ PHYSFS_uint8 hosttype = (PHYSFS_uint8) ((entry->version >> 8) & 0xFF);
+ if (hosttype == 0) /* FS_FAT_ */
+ {
+ while (*path)
+ {
+ if (*path == '\\')
+ *path = '/';
+ path++;
+ } /* while */
+ } /* if */
+} /* zip_convert_dos_path */
+
+
+static void zip_expand_symlink_path(char *path)
+{
+ char *ptr = path;
+ char *prevptr = path;
+
+ while (1)
+ {
+ ptr = strchr(ptr, '/');
+ if (ptr == NULL)
+ break;
+
+ if (*(ptr + 1) == '.')
+ {
+ if (*(ptr + 2) == '/')
+ {
+ /* current dir in middle of string: ditch it. */
+ memmove(ptr, ptr + 2, strlen(ptr + 2) + 1);
+ } /* else if */
+
+ else if (*(ptr + 2) == '\0')
+ {
+ /* current dir at end of string: ditch it. */
+ *ptr = '\0';
+ } /* else if */
+
+ else if (*(ptr + 2) == '.')
+ {
+ if (*(ptr + 3) == '/')
+ {
+ /* parent dir in middle: move back one, if possible. */
+ memmove(prevptr, ptr + 4, strlen(ptr + 4) + 1);
+ ptr = prevptr;
+ while (prevptr != path)
+ {
+ prevptr--;
+ if (*prevptr == '/')
+ {
+ prevptr++;
+ break;
+ } /* if */
+ } /* while */
+ } /* if */
+
+ if (*(ptr + 3) == '\0')
+ {
+ /* parent dir at end: move back one, if possible. */
+ *prevptr = '\0';
+ } /* if */
+ } /* if */
+ } /* if */
+ else
+ {
+ prevptr = ptr;
+ } /* else */
+ } /* while */
+} /* zip_expand_symlink_path */
+
+/* (forward reference: zip_follow_symlink and zip_resolve call each other.) */
+static int zip_resolve(void *in, ZIPinfo *info, ZIPentry *entry);
+
+/*
+ * Look for the entry named by (path). If it exists, resolve it, and return
+ * a pointer to that entry. If it's another symlink, keep resolving until you
+ * hit a real file and then return a pointer to the final non-symlink entry.
+ * If there's a problem, return NULL. (path) is always free()'d by this
+ * function.
+ */
+static ZIPentry *zip_follow_symlink(void *in, ZIPinfo *info, char *path)
+{
+ ZIPentry *entry;
+
+ zip_expand_symlink_path(path);
+ entry = zip_find_entry(info, path, NULL);
+ if (entry != NULL)
+ {
+ if (!zip_resolve(in, info, entry)) /* recursive! */
+ entry = NULL;
+ else
+ {
+ if (entry->symlink != NULL)
+ entry = entry->symlink;
+ } /* else */
+ } /* if */
+
+ allocator.Free(path);
+ return(entry);
+} /* zip_follow_symlink */
+
+
+static int zip_resolve_symlink(void *in, ZIPinfo *info, ZIPentry *entry)
+{
+ char *path;
+ PHYSFS_uint32 size = entry->uncompressed_size;
+ int rc = 0;
+
+ /*
+ * We've already parsed the local file header of the symlink at this
+ * point. Now we need to read the actual link from the file data and
+ * follow it.
+ */
+
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, entry->offset), NULL, 0);
+
+ path = (char *) allocator.Malloc(size + 1);
+ BAIL_IF_MACRO(path == NULL, ERR_OUT_OF_MEMORY, 0);
+
+ if (entry->compression_method == COMPMETH_NONE)
+ rc = (__PHYSFS_platformRead(in, path, size, 1) == 1);
+
+ else /* symlink target path is compressed... */
+ {
+ z_stream stream;
+ PHYSFS_uint32 complen = entry->compressed_size;
+ PHYSFS_uint8 *compressed = (PHYSFS_uint8*) __PHYSFS_smallAlloc(complen);
+ if (compressed != NULL)
+ {
+ if (__PHYSFS_platformRead(in, compressed, complen, 1) == 1)
+ {
+ initializeZStream(&stream);
+ stream.next_in = compressed;
+ stream.avail_in = complen;
+ stream.next_out = (unsigned char *) path;
+ stream.avail_out = size;
+ if (zlib_err(inflateInit2(&stream, -MAX_WBITS)) == Z_OK)
+ {
+ rc = zlib_err(inflate(&stream, Z_FINISH));
+ inflateEnd(&stream);
+
+ /* both are acceptable outcomes... */
+ rc = ((rc == Z_OK) || (rc == Z_STREAM_END));
+ } /* if */
+ } /* if */
+ __PHYSFS_smallFree(compressed);
+ } /* if */
+ } /* else */
+
+ if (!rc)
+ allocator.Free(path);
+ else
+ {
+ path[entry->uncompressed_size] = '\0'; /* null-terminate it. */
+ zip_convert_dos_path(entry, path);
+ entry->symlink = zip_follow_symlink(in, info, path);
+ } /* else */
+
+ return(entry->symlink != NULL);
+} /* zip_resolve_symlink */
+
+
+/*
+ * Parse the local file header of an entry, and update entry->offset.
+ */
+static int zip_parse_local(void *in, ZIPentry *entry)
+{
+ PHYSFS_uint32 ui32;
+ PHYSFS_uint16 ui16;
+ PHYSFS_uint16 fnamelen;
+ PHYSFS_uint16 extralen;
+
+ /*
+ * crc and (un)compressed_size are always zero if this is a "JAR"
+ * archive created with Sun's Java tools, apparently. We only
+ * consider this archive corrupted if those entries don't match and
+ * aren't zero. That seems to work well.
+ */
+
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, entry->offset), NULL, 0);
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 != ZIP_LOCAL_FILE_SIG, ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+ BAIL_IF_MACRO(ui16 != entry->version_needed, ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0); /* general bits. */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+ BAIL_IF_MACRO(ui16 != entry->compression_method, ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0); /* date/time */
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 && (ui32 != entry->crc), ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 && (ui32 != entry->compressed_size), ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 && (ui32 != entry->uncompressed_size),ERR_CORRUPTED,0);
+ BAIL_IF_MACRO(!readui16(in, &fnamelen), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &extralen), NULL, 0);
+
+ entry->offset += fnamelen + extralen + 30;
+ return(1);
+} /* zip_parse_local */
+
+
+static int zip_resolve(void *in, ZIPinfo *info, ZIPentry *entry)
+{
+ int retval = 1;
+ ZipResolveType resolve_type = entry->resolved;
+
+ /* Don't bother if we've failed to resolve this entry before. */
+ BAIL_IF_MACRO(resolve_type == ZIP_BROKEN_FILE, ERR_CORRUPTED, 0);
+ BAIL_IF_MACRO(resolve_type == ZIP_BROKEN_SYMLINK, ERR_CORRUPTED, 0);
+
+ /* uhoh...infinite symlink loop! */
+ BAIL_IF_MACRO(resolve_type == ZIP_RESOLVING, ERR_SYMLINK_LOOP, 0);
+
+ /*
+ * We fix up the offset to point to the actual data on the
+ * first open, since we don't want to seek across the whole file on
+ * archive open (can be SLOW on large, CD-stored files), but we
+ * need to check the local file header...not just for corruption,
+ * but since it stores offset info the central directory does not.
+ */
+ if (resolve_type != ZIP_RESOLVED)
+ {
+ entry->resolved = ZIP_RESOLVING;
+
+ retval = zip_parse_local(in, entry);
+ if (retval)
+ {
+ /*
+ * If it's a symlink, find the original file. This will cause
+ * resolution of other entries (other symlinks and, eventually,
+ * the real file) if all goes well.
+ */
+ if (resolve_type == ZIP_UNRESOLVED_SYMLINK)
+ retval = zip_resolve_symlink(in, info, entry);
+ } /* if */
+
+ if (resolve_type == ZIP_UNRESOLVED_SYMLINK)
+ entry->resolved = ((retval) ? ZIP_RESOLVED : ZIP_BROKEN_SYMLINK);
+ else if (resolve_type == ZIP_UNRESOLVED_FILE)
+ entry->resolved = ((retval) ? ZIP_RESOLVED : ZIP_BROKEN_FILE);
+ } /* if */
+
+ return(retval);
+} /* zip_resolve */
+
+
+static int zip_version_does_symlinks(PHYSFS_uint32 version)
+{
+ int retval = 0;
+ PHYSFS_uint8 hosttype = (PHYSFS_uint8) ((version >> 8) & 0xFF);
+
+ switch (hosttype)
+ {
+ /*
+ * These are the platforms that can NOT build an archive with
+ * symlinks, according to the Info-ZIP project.
+ */
+ case 0: /* FS_FAT_ */
+ case 1: /* AMIGA_ */
+ case 2: /* VMS_ */
+ case 4: /* VM_CSM_ */
+ case 6: /* FS_HPFS_ */
+ case 11: /* FS_NTFS_ */
+ case 14: /* FS_VFAT_ */
+ case 13: /* ACORN_ */
+ case 15: /* MVS_ */
+ case 18: /* THEOS_ */
+ break; /* do nothing. */
+
+ default: /* assume the rest to be unix-like. */
+ retval = 1;
+ break;
+ } /* switch */
+
+ return(retval);
+} /* zip_version_does_symlinks */
+
+
+static int zip_entry_is_symlink(const ZIPentry *entry)
+{
+ return((entry->resolved == ZIP_UNRESOLVED_SYMLINK) ||
+ (entry->resolved == ZIP_BROKEN_SYMLINK) ||
+ (entry->symlink));
+} /* zip_entry_is_symlink */
+
+
+static int zip_has_symlink_attr(ZIPentry *entry, PHYSFS_uint32 extern_attr)
+{
+ PHYSFS_uint16 xattr = ((extern_attr >> 16) & 0xFFFF);
+
+ return (
+ (zip_version_does_symlinks(entry->version)) &&
+ (entry->uncompressed_size > 0) &&
+ ((xattr & UNIX_FILETYPE_MASK) == UNIX_FILETYPE_SYMLINK)
+ );
+} /* zip_has_symlink_attr */
+
+
+static PHYSFS_sint64 zip_dos_time_to_physfs_time(PHYSFS_uint32 dostime)
+{
+#ifdef _WIN32_WCE
+ /* We have no struct tm and no mktime right now.
+ FIXME: This should probably be fixed at some point.
+ */
+ return -1;
+#else
+ PHYSFS_uint32 dosdate;
+ struct tm unixtime;
+ memset(&unixtime, '\0', sizeof (unixtime));
+
+ dosdate = (PHYSFS_uint32) ((dostime >> 16) & 0xFFFF);
+ dostime &= 0xFFFF;
+
+ /* dissect date */
+ unixtime.tm_year = ((dosdate >> 9) & 0x7F) + 80;
+ unixtime.tm_mon = ((dosdate >> 5) & 0x0F) - 1;
+ unixtime.tm_mday = ((dosdate ) & 0x1F);
+
+ /* dissect time */
+ unixtime.tm_hour = ((dostime >> 11) & 0x1F);
+ unixtime.tm_min = ((dostime >> 5) & 0x3F);
+ unixtime.tm_sec = ((dostime << 1) & 0x3E);
+
+ /* let mktime calculate daylight savings time. */
+ unixtime.tm_isdst = -1;
+
+ return((PHYSFS_sint64) mktime(&unixtime));
+#endif
+} /* zip_dos_time_to_physfs_time */
+
+
+static int zip_load_entry(void *in, ZIPentry *entry, PHYSFS_uint32 ofs_fixup)
+{
+ PHYSFS_uint16 fnamelen, extralen, commentlen;
+ PHYSFS_uint32 external_attr;
+ PHYSFS_uint16 ui16;
+ PHYSFS_uint32 ui32;
+ PHYSFS_sint64 si64;
+
+ /* sanity check with central directory signature... */
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 != ZIP_CENTRAL_DIR_SIG, ERR_CORRUPTED, 0);
+
+ /* Get the pertinent parts of the record... */
+ BAIL_IF_MACRO(!readui16(in, &entry->version), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &entry->version_needed), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0); /* general bits */
+ BAIL_IF_MACRO(!readui16(in, &entry->compression_method), NULL, 0);
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ entry->last_mod_time = zip_dos_time_to_physfs_time(ui32);
+ BAIL_IF_MACRO(!readui32(in, &entry->crc), NULL, 0);
+ BAIL_IF_MACRO(!readui32(in, &entry->compressed_size), NULL, 0);
+ BAIL_IF_MACRO(!readui32(in, &entry->uncompressed_size), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &fnamelen), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &extralen), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &commentlen), NULL, 0);
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0); /* disk number start */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0); /* internal file attribs */
+ BAIL_IF_MACRO(!readui32(in, &external_attr), NULL, 0);
+ BAIL_IF_MACRO(!readui32(in, &entry->offset), NULL, 0);
+ entry->offset += ofs_fixup;
+
+ entry->symlink = NULL; /* will be resolved later, if necessary. */
+ entry->resolved = (zip_has_symlink_attr(entry, external_attr)) ?
+ ZIP_UNRESOLVED_SYMLINK : ZIP_UNRESOLVED_FILE;
+
+ entry->name = (char *) allocator.Malloc(fnamelen + 1);
+ BAIL_IF_MACRO(entry->name == NULL, ERR_OUT_OF_MEMORY, 0);
+ if (__PHYSFS_platformRead(in, entry->name, fnamelen, 1) != 1)
+ goto zip_load_entry_puked;
+
+ entry->name[fnamelen] = '\0'; /* null-terminate the filename. */
+ zip_convert_dos_path(entry, entry->name);
+
+ si64 = __PHYSFS_platformTell(in);
+ if (si64 == -1)
+ goto zip_load_entry_puked;
+
+ /* seek to the start of the next entry in the central directory... */
+ if (!__PHYSFS_platformSeek(in, si64 + extralen + commentlen))
+ goto zip_load_entry_puked;
+
+ return(1); /* success. */
+
+zip_load_entry_puked:
+ allocator.Free(entry->name);
+ return(0); /* failure. */
+} /* zip_load_entry */
+
+
+static int zip_entry_cmp(void *_a, PHYSFS_uint32 one, PHYSFS_uint32 two)
+{
+ if (one != two)
+ {
+ const ZIPentry *a = (const ZIPentry *) _a;
+ return(strcmp(a[one].name, a[two].name));
+ } /* if */
+
+ return 0;
+} /* zip_entry_cmp */
+
+
+static void zip_entry_swap(void *_a, PHYSFS_uint32 one, PHYSFS_uint32 two)
+{
+ if (one != two)
+ {
+ ZIPentry tmp;
+ ZIPentry *first = &(((ZIPentry *) _a)[one]);
+ ZIPentry *second = &(((ZIPentry *) _a)[two]);
+ memcpy(&tmp, first, sizeof (ZIPentry));
+ memcpy(first, second, sizeof (ZIPentry));
+ memcpy(second, &tmp, sizeof (ZIPentry));
+ } /* if */
+} /* zip_entry_swap */
+
+
+static int zip_load_entries(void *in, ZIPinfo *info,
+ PHYSFS_uint32 data_ofs, PHYSFS_uint32 central_ofs)
+{
+ PHYSFS_uint32 max = info->entryCount;
+ PHYSFS_uint32 i;
+
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, central_ofs), NULL, 0);
+
+ info->entries = (ZIPentry *) allocator.Malloc(sizeof (ZIPentry) * max);
+ BAIL_IF_MACRO(info->entries == NULL, ERR_OUT_OF_MEMORY, 0);
+
+ for (i = 0; i < max; i++)
+ {
+ if (!zip_load_entry(in, &info->entries[i], data_ofs))
+ {
+ zip_free_entries(info->entries, i);
+ return(0);
+ } /* if */
+ } /* for */
+
+ __PHYSFS_sort(info->entries, max, zip_entry_cmp, zip_entry_swap);
+ return(1);
+} /* zip_load_entries */
+
+
+static int zip_parse_end_of_central_dir(void *in, ZIPinfo *info,
+ PHYSFS_uint32 *data_start,
+ PHYSFS_uint32 *central_dir_ofs)
+{
+ PHYSFS_uint32 ui32;
+ PHYSFS_uint16 ui16;
+ PHYSFS_sint64 len;
+ PHYSFS_sint64 pos;
+
+ /* find the end-of-central-dir record, and seek to it. */
+ pos = zip_find_end_of_central_dir(in, &len);
+ BAIL_IF_MACRO(pos == -1, NULL, 0);
+ BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, pos), NULL, 0);
+
+ /* check signature again, just in case. */
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+ BAIL_IF_MACRO(ui32 != ZIP_END_OF_CENTRAL_DIR_SIG, ERR_NOT_AN_ARCHIVE, 0);
+
+ /* number of this disk */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+ BAIL_IF_MACRO(ui16 != 0, ERR_UNSUPPORTED_ARCHIVE, 0);
+
+ /* number of the disk with the start of the central directory */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+ BAIL_IF_MACRO(ui16 != 0, ERR_UNSUPPORTED_ARCHIVE, 0);
+
+ /* total number of entries in the central dir on this disk */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+
+ /* total number of entries in the central dir */
+ BAIL_IF_MACRO(!readui16(in, &info->entryCount), NULL, 0);
+ BAIL_IF_MACRO(ui16 != info->entryCount, ERR_UNSUPPORTED_ARCHIVE, 0);
+
+ /* size of the central directory */
+ BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
+
+ /* offset of central directory */
+ BAIL_IF_MACRO(!readui32(in, central_dir_ofs), NULL, 0);
+ BAIL_IF_MACRO(pos < *central_dir_ofs + ui32, ERR_UNSUPPORTED_ARCHIVE, 0);
+
+ /*
+ * For self-extracting archives, etc, there's crapola in the file
+ * before the zipfile records; we calculate how much data there is
+ * prepended by determining how far the central directory offset is
+ * from where it is supposed to be (start of end-of-central-dir minus
+ * sizeof central dir)...the difference in bytes is how much arbitrary
+ * data is at the start of the physical file.
+ */
+ *data_start = (PHYSFS_uint32) (pos - (*central_dir_ofs + ui32));
+
+ /* Now that we know the difference, fix up the central dir offset... */
+ *central_dir_ofs += *data_start;
+
+ /* zipfile comment length */
+ BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
+
+ /*
+ * Make sure that the comment length matches to the end of file...
+ * If it doesn't, we're either in the wrong part of the file, or the
+ * file is corrupted, but we give up either way.
+ */
+ BAIL_IF_MACRO((pos + 22 + ui16) != len, ERR_UNSUPPORTED_ARCHIVE, 0);
+
+ return(1); /* made it. */
+} /* zip_parse_end_of_central_dir */
+
+
+static ZIPinfo *zip_create_zipinfo(const char *name)
+{
+ char *ptr;
+ ZIPinfo *info = (ZIPinfo *) allocator.Malloc(sizeof (ZIPinfo));
+ BAIL_IF_MACRO(info == NULL, ERR_OUT_OF_MEMORY, 0);
+ memset(info, '\0', sizeof (ZIPinfo));
+
+ ptr = (char *) allocator.Malloc(strlen(name) + 1);
+ if (ptr == NULL)
+ {
+ allocator.Free(info);
+ BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
+ } /* if */
+
+ info->archiveName = ptr;
+ strcpy(info->archiveName, name);
+ return(info);
+} /* zip_create_zipinfo */
+
+
+static void *ZIP_openArchive(const char *name, int forWriting)
+{
+ void *in = NULL;
+ ZIPinfo *info = NULL;
+ PHYSFS_uint32 data_start;
+ PHYSFS_uint32 cent_dir_ofs;
+
+ BAIL_IF_MACRO(forWriting, ERR_ARC_IS_READ_ONLY, NULL);
+
+ if ((in = __PHYSFS_platformOpenRead(name)) == NULL)
+ goto zip_openarchive_failed;
+
+ if ((info = zip_create_zipinfo(name)) == NULL)
+ goto zip_openarchive_failed;
+
+ if (!zip_parse_end_of_central_dir(in, info, &data_start, ¢_dir_ofs))
+ goto zip_openarchive_failed;
+
+ if (!zip_load_entries(in, info, data_start, cent_dir_ofs))
+ goto zip_openarchive_failed;
+
+ __PHYSFS_platformClose(in);
+ return(info);
+
+zip_openarchive_failed:
+ if (info != NULL)
+ {
+ if (info->archiveName != NULL)
+ allocator.Free(info->archiveName);
+ allocator.Free(info);
+ } /* if */
+
+ if (in != NULL)
+ __PHYSFS_platformClose(in);
+
+ return(NULL);
+} /* ZIP_openArchive */
+
+
+static PHYSFS_sint32 zip_find_start_of_dir(ZIPinfo *info, const char *path,
+ int stop_on_first_find)
+{
+ PHYSFS_sint32 lo = 0;
+ PHYSFS_sint32 hi = (PHYSFS_sint32) (info->entryCount - 1);
+ PHYSFS_sint32 middle;
+ PHYSFS_uint32 dlen = strlen(path);
+ PHYSFS_sint32 retval = -1;
+ const char *name;
+ int rc;
+
+ if (*path == '\0') /* root dir? */
+ return(0);
+
+ if ((dlen > 0) && (path[dlen - 1] == '/')) /* ignore trailing slash. */
+ dlen--;
+
+ while (lo <= hi)
+ {
+ middle = lo + ((hi - lo) / 2);
+ name = info->entries[middle].name;
+ rc = strncmp(path, name, dlen);
+ if (rc == 0)
+ {
+ char ch = name[dlen];
+ if ('/' < ch) /* make sure this isn't just a substr match. */
+ rc = -1;
+ else if ('/' > ch)
+ rc = 1;
+ else
+ {
+ if (stop_on_first_find) /* Just checking dir's existance? */
+ return(middle);
+
+ if (name[dlen + 1] == '\0') /* Skip initial dir entry. */
+ return(middle + 1);
+
+ /* there might be more entries earlier in the list. */
+ retval = middle;
+ hi = middle - 1;
+ } /* else */
+ } /* if */
+
+ if (rc > 0)
+ lo = middle + 1;
+ else
+ hi = middle - 1;
+ } /* while */
+
+ return(retval);
+} /* zip_find_start_of_dir */
+
+
+/*
+ * Moved to seperate function so we can use alloca then immediately throw
+ * away the allocated stack space...
+ */
+static void doEnumCallback(PHYSFS_EnumFilesCallback cb, void *callbackdata,
+ const char *odir, const char *str, PHYSFS_sint32 ln)
+{
+ char *newstr = __PHYSFS_smallAlloc(ln + 1);
+ if (newstr == NULL)
+ return;
+
+ memcpy(newstr, str, ln);
+ newstr[ln] = '\0';
+ cb(callbackdata, odir, newstr);
+ __PHYSFS_smallFree(newstr);
+} /* doEnumCallback */
+
+
+static void ZIP_enumerateFiles(dvoid *opaque, const char *dname,
+ int omitSymLinks, PHYSFS_EnumFilesCallback cb,
+ const char *origdir, void *callbackdata)
+{
+ ZIPinfo *info = ((ZIPinfo *) opaque);
+ PHYSFS_sint32 dlen, dlen_inc, max, i;
+
+ i = zip_find_start_of_dir(info, dname, 0);
+ if (i == -1) /* no such directory. */
+ return;
+
+ dlen = strlen(dname);
+ if ((dlen > 0) && (dname[dlen - 1] == '/')) /* ignore trailing slash. */
+ dlen--;
+
+ dlen_inc = ((dlen > 0) ? 1 : 0) + dlen;
+ max = (PHYSFS_sint32) info->entryCount;
+ while (i < max)
+ {
+ char *e = info->entries[i].name;
+ if ((dlen) && ((strncmp(e, dname, dlen) != 0) || (e[dlen] != '/')))
+ break; /* past end of this dir; we're done. */
+
+ if ((omitSymLinks) && (zip_entry_is_symlink(&info->entries[i])))
+ i++;
+ else
+ {
+ char *add = e + dlen_inc;
+ char *ptr = strchr(add, '/');
+ PHYSFS_sint32 ln = (PHYSFS_sint32) ((ptr) ? ptr-add : strlen(add));
+ doEnumCallback(cb, callbackdata, origdir, add, ln);
+ ln += dlen_inc; /* point past entry to children... */
+
+ /* increment counter and skip children of subdirs... */
+ while ((++i < max) && (ptr != NULL))
+ {
+ char *e_new = info->entries[i].name;
+ if ((strncmp(e, e_new, ln) != 0) || (e_new[ln] != '/'))
+ break;
+ } /* while */
+ } /* else */
+ } /* while */
+} /* ZIP_enumerateFiles */
+
+
+static int ZIP_exists(dvoid *opaque, const char *name)
+{
+ int isDir;
+ ZIPinfo *info = (ZIPinfo *) opaque;
+ ZIPentry *entry = zip_find_entry(info, name, &isDir);
+ return((entry != NULL) || (isDir));
+} /* ZIP_exists */
+
+
+static PHYSFS_sint64 ZIP_getLastModTime(dvoid *opaque,
+ const char *name,
+ int *fileExists)
+{
+ int isDir;
+ ZIPinfo *info = (ZIPinfo *) opaque;
+ ZIPentry *entry = zip_find_entry(info, name, &isDir);
+
+ *fileExists = ((isDir) || (entry != NULL));
+ if (isDir)
+ return(1); /* Best I can do for a dir... */
+
+ BAIL_IF_MACRO(entry == NULL, NULL, -1);
+ return(entry->last_mod_time);
+} /* ZIP_getLastModTime */
+
+
+static int ZIP_isDirectory(dvoid *opaque, const char *name, int *fileExists)
+{
+ ZIPinfo *info = (ZIPinfo *) opaque;
+ int isDir;
+ ZIPentry *entry = zip_find_entry(info, name, &isDir);
+
+ *fileExists = ((isDir) || (entry != NULL));
+ if (isDir)
+ return(1); /* definitely a dir. */
+
+ /* Follow symlinks. This means we might need to resolve entries. */
+ BAIL_IF_MACRO(entry == NULL, ERR_NO_SUCH_FILE, 0);
+
+ if (entry->resolved == ZIP_UNRESOLVED_SYMLINK) /* gotta resolve it. */
+ {
+ int rc;
+ void *in = __PHYSFS_platformOpenRead(info->archiveName);
+ BAIL_IF_MACRO(in == NULL, NULL, 0);
+ rc = zip_resolve(in, info, entry);
+ __PHYSFS_platformClose(in);
+ if (!rc)
+ return(0);
+ } /* if */
+
+ BAIL_IF_MACRO(entry->resolved == ZIP_BROKEN_SYMLINK, NULL, 0);
+ BAIL_IF_MACRO(entry->symlink == NULL, ERR_NOT_A_DIR, 0);
+
+ return(zip_find_start_of_dir(info, entry->symlink->name, 1) >= 0);
+} /* ZIP_isDirectory */
+
+
+static int ZIP_isSymLink(dvoid *opaque, const char *name, int *fileExists)
+{
+ int isDir;
+ const ZIPentry *entry = zip_find_entry((ZIPinfo *) opaque, name, &isDir);
+ *fileExists = ((isDir) || (entry != NULL));
+ BAIL_IF_MACRO(entry == NULL, NULL, 0);
+ return(zip_entry_is_symlink(entry));
+} /* ZIP_isSymLink */
+
+
+static void *zip_get_file_handle(const char *fn, ZIPinfo *inf, ZIPentry *entry)
+{
+ int success;
+ void *retval = __PHYSFS_platformOpenRead(fn);
+ BAIL_IF_MACRO(retval == NULL, NULL, NULL);
+
+ success = zip_resolve(retval, inf, entry);
+ if (success)
+ {
+ PHYSFS_sint64 offset;
+ offset = ((entry->symlink) ? entry->symlink->offset : entry->offset);
+ success = __PHYSFS_platformSeek(retval, offset);
+ } /* if */
+
+ if (!success)
+ {
+ __PHYSFS_platformClose(retval);
+ retval = NULL;
+ } /* if */
+
+ return(retval);
+} /* zip_get_file_handle */
+
+
+static fvoid *ZIP_openRead(dvoid *opaque, const char *fnm, int *fileExists)
+{
+ ZIPinfo *info = (ZIPinfo *) opaque;
+ ZIPentry *entry = zip_find_entry(info, fnm, NULL);
+ ZIPfileinfo *finfo = NULL;
+ void *in;
+
+ *fileExists = (entry != NULL);
+ BAIL_IF_MACRO(entry == NULL, NULL, NULL);
+
+ in = zip_get_file_handle(info->archiveName, info, entry);
+ BAIL_IF_MACRO(in == NULL, NULL, NULL);
+
+ finfo = (ZIPfileinfo *) allocator.Malloc(sizeof (ZIPfileinfo));
+ if (finfo == NULL)
+ {
+ __PHYSFS_platformClose(in);
+ BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
+ } /* if */
+
+ memset(finfo, '\0', sizeof (ZIPfileinfo));
+ finfo->handle = in;
+ finfo->entry = ((entry->symlink != NULL) ? entry->symlink : entry);
+ initializeZStream(&finfo->stream);
+ if (finfo->entry->compression_method != COMPMETH_NONE)
+ {
+ if (zlib_err(inflateInit2(&finfo->stream, -MAX_WBITS)) != Z_OK)
+ {
+ ZIP_fileClose(finfo);
+ return(NULL);
+ } /* if */
+
+ finfo->buffer = (PHYSFS_uint8 *) allocator.Malloc(ZIP_READBUFSIZE);
+ if (finfo->buffer == NULL)
+ {
+ ZIP_fileClose(finfo);
+ BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
+ } /* if */
+ } /* if */
+
+ return(finfo);
+} /* ZIP_openRead */
+
+
+static fvoid *ZIP_openWrite(dvoid *opaque, const char *filename)
+{
+ BAIL_MACRO(ERR_NOT_SUPPORTED, NULL);
+} /* ZIP_openWrite */
+
+
+static fvoid *ZIP_openAppend(dvoid *opaque, const char *filename)
+{
+ BAIL_MACRO(ERR_NOT_SUPPORTED, NULL);
+} /* ZIP_openAppend */
+
+
+static void ZIP_dirClose(dvoid *opaque)
+{
+ ZIPinfo *zi = (ZIPinfo *) (opaque);
+ zip_free_entries(zi->entries, zi->entryCount);
+ allocator.Free(zi->archiveName);
+ allocator.Free(zi);
+} /* ZIP_dirClose */
+
+
+static int ZIP_remove(dvoid *opaque, const char *name)
+{
+ BAIL_MACRO(ERR_NOT_SUPPORTED, 0);
+} /* ZIP_remove */
+
+
+static int ZIP_mkdir(dvoid *opaque, const char *name)
+{
+ BAIL_MACRO(ERR_NOT_SUPPORTED, 0);
+} /* ZIP_mkdir */
+
+
+const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_ZIP =
+{
+ "ZIP",
+ ZIP_ARCHIVE_DESCRIPTION,
+ "Ryan C. Gordon <icculus@icculus.org>",
+ "http://icculus.org/physfs/",
+};
+
+
+const PHYSFS_Archiver __PHYSFS_Archiver_ZIP =
+{
+ &__PHYSFS_ArchiveInfo_ZIP,
+ ZIP_isArchive, /* isArchive() method */
+ ZIP_openArchive, /* openArchive() method */
+ ZIP_enumerateFiles, /* enumerateFiles() method */
+ ZIP_exists, /* exists() method */
+ ZIP_isDirectory, /* isDirectory() method */
+ ZIP_isSymLink, /* isSymLink() method */
+ ZIP_getLastModTime, /* getLastModTime() method */
+ ZIP_openRead, /* openRead() method */
+ ZIP_openWrite, /* openWrite() method */
+ ZIP_openAppend, /* openAppend() method */
+ ZIP_remove, /* remove() method */
+ ZIP_mkdir, /* mkdir() method */
+ ZIP_dirClose, /* dirClose() method */
+ ZIP_read, /* read() method */
+ ZIP_write, /* write() method */
+ ZIP_eof, /* eof() method */
+ ZIP_tell, /* tell() method */
+ ZIP_seek, /* seek() method */
+ ZIP_fileLength, /* fileLength() method */
+ ZIP_fileClose /* fileClose() method */
+};
+
+#endif /* defined PHYSFS_SUPPORTS_ZIP */
+
+/* end of zip.c ... */
+
projects / physicsfs / blobdiff