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-rw-r--r--source/unzip/unzip.c1224
1 files changed, 0 insertions, 1224 deletions
diff --git a/source/unzip/unzip.c b/source/unzip/unzip.c
deleted file mode 100644
index 54695c2..0000000
--- a/source/unzip/unzip.c
+++ /dev/null
@@ -1,1224 +0,0 @@
-/*
- * unzip.c -- IO on .zip files using zlib Version 0.15 beta, Mar 19th, 1998,
- *
- * Read unzip.h for more info
- */
-
-
-//#include <stdio.h>
-//#include <stdlib.h>
-#include "fs_api.h"
-#include "ds2_malloc.h"
-#include <string.h>
-#include "zlib.h"
-#include "unzip.h"
-#include "unzipP.h"
-
-#ifdef STDC
-//#include <stddef.h>
-//#include <string.h>
-//#include <stdlib.h>
-#endif
-
-#ifdef NO_ERRNO_H
-extern int errno;
-#else
-#include <errno.h>
-#endif
-
-const char unz_copyright[] =
-" unzip 0.15 Copyright 1998 Gilles Vollant ";
-
-void unShrink ();
-void unReduce ();
-int explode ();
-
-/*
- * ===========================================================================
- * Read a byte from a gz_stream; update next_in and avail_in. Return EOF for
- * end of file. IN assertion: the stream s has been sucessfully opened for
- * reading.
- */
-
-
-local int
-unzlocal_getByte (FILE * fin, int *pi)
-{
- unsigned char c;
- int err = fread (&c, 1, 1, fin);
- if (err == 1)
- {
- *pi = (int) c;
- return UNZ_OK;
- } else
- {
- if (ferror (fin))
- return UNZ_ERRNO;
- else
- return UNZ_EOF;
- }
-}
-
-
-/*
- * ===========================================================================
- * Reads a long in LSB order from the given gz_stream. Sets
- */
-local int
-unzlocal_getShort (FILE * fin, uLong * pX)
-{
- uLong x;
- int i;
- int err;
-
- err = unzlocal_getByte (fin, &i);
- x = (uLong) i;
-
- if (err == UNZ_OK)
- err = unzlocal_getByte (fin, &i);
- x += ((uLong) i) << 8;
-
- if (err == UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int
-unzlocal_getLong (FILE * fin, uLong * pX)
-{
- uLong x;
- int i;
- int err;
-
- err = unzlocal_getByte (fin, &i);
- x = (uLong) i;
-
- if (err == UNZ_OK)
- err = unzlocal_getByte (fin, &i);
- x += ((uLong) i) << 8;
-
- if (err == UNZ_OK)
- err = unzlocal_getByte (fin, &i);
- x += ((uLong) i) << 16;
-
- if (err == UNZ_OK)
- err = unzlocal_getByte (fin, &i);
- x += ((uLong) i) << 24;
-
- if (err == UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-
-/* My own strcmpi / strcasecmp */
-local int
-strcmpcasenosensitive_internal (const char *fileName1, const char *fileName2)
-{
- for (;;)
- {
- char c1 = *(fileName1++);
- char c2 = *(fileName2++);
- if ((c1 >= 'a') && (c1 <= 'z'))
- c1 -= 0x20;
- if ((c2 >= 'a') && (c2 <= 'z'))
- c2 -= 0x20;
- if (c1 == '\0')
- return ((c2 == '\0') ? 0 : -1);
- if (c2 == '\0')
- return 1;
- if (c1 < c2)
- return -1;
- if (c1 > c2)
- return 1;
- }
-}
-
-
-#ifdef CASESENSITIVITYDEFAULT_NO
-#define CASESENSITIVITYDEFAULTVALUE 2
-#else
-#define CASESENSITIVITYDEFAULTVALUE 1
-#endif
-
-#ifndef STRCMPCASENOSENTIVEFUNCTION
-#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
-#endif
-
-/*
- * Compare two filename (fileName1,fileName2). If iCaseSenisivity = 1,
- * comparision is case sensitivity (like strcmp) If iCaseSenisivity = 2,
- * comparision is not case sensitivity (like strcmpi or strcasecmp) If
- * iCaseSenisivity = 0, case sensitivity is defaut of your operating system
- * (like 1 on Unix, 2 on Windows)
- *
- */
-extern int ZEXPORT
-unzStringFileNameCompare (const char *fileName1, const char *fileName2, int iCaseSensitivity)
-{
- if (iCaseSensitivity == 0)
- iCaseSensitivity = CASESENSITIVITYDEFAULTVALUE;
-
- if (iCaseSensitivity == 1)
- return strcmp (fileName1, fileName2);
-
- return STRCMPCASENOSENTIVEFUNCTION (fileName1, fileName2);
-}
-
-#define BUFREADCOMMENT (0x400)
-
-/*
- * Locate the Central directory of a zipfile (at the end, just before the
- * global comment)
- */
-local uLong
-unzlocal_SearchCentralDir (FILE * fin)
-{
- unsigned char *buf;
- uLong uSizeFile;
- uLong uBackRead;
- uLong uMaxBack = 0xffff; /* maximum size of global comment */
- uLong uPosFound = 0;
-
- if (fseek (fin, 0, SEEK_END) != 0)
- return 0;
-
- uSizeFile = ftell (fin);
-
- if (uMaxBack > uSizeFile)
- uMaxBack = uSizeFile;
-
- buf = (unsigned char *) ALLOC (BUFREADCOMMENT + 4);
- if (buf == NULL)
- return 0;
-
- uBackRead = 4;
- while (uBackRead < uMaxBack)
- {
- uLong uReadSize, uReadPos;
- int i;
- if (uBackRead + BUFREADCOMMENT > uMaxBack)
- uBackRead = uMaxBack;
- else
- uBackRead += BUFREADCOMMENT;
- uReadPos = uSizeFile - uBackRead;
-
- uReadSize = ((BUFREADCOMMENT + 4) < (uSizeFile - uReadPos)) ?
- (BUFREADCOMMENT + 4) : (uSizeFile - uReadPos);
- if (fseek (fin, uReadPos, SEEK_SET) != 0)
- break;
-
- if (fread (buf, (uInt) uReadSize, 1, fin) != 1)
- break;
-
- for (i = 0; i < (int) uReadSize - 3; i++)
- if (((*(buf + i)) == 0x50) && ((*(buf + i + 1)) == 0x4b) &&
- ((*(buf + i + 2)) == 0x05) && ((*(buf + i + 3)) == 0x06))
- {
- uPosFound = uReadPos + i;
- break;
- }
- if (uPosFound != 0)
- break;
- }
- TRYFREE (buf);
- return uPosFound;
-}
-
-/*
- * Open a Zip file. path contain the full pathname (by example, on a Windows
- * NT computer "c:\\test\\zlib109.zip" or on an Unix computer
- * "zlib/zlib109.zip". If the zipfile cannot be opened (file don't exist or
- * in not valid), the return value is NULL. Else, the return value is a
- * unzFile Handle, usable with other function of this unzip package.
- */
-extern unzFile ZEXPORT
-unzOpen (const char *path)
-{
- unz_s us;
- unz_s *s;
- uLong central_pos, uL;
- FILE *fin;
-
- uLong number_disk;/* number of the current dist, used for
- * spaning ZIP, unsupported, always 0 */
- uLong number_disk_with_CD; /* number the the disk with
- * central dir, used for
- * spaning ZIP, unsupported,
- * always 0 */
- uLong number_entry_CD; /* total number of entries in the
- * central dir (same than
- * number_entry on nospan) */
-
- int err = UNZ_OK;
-
- if (unz_copyright[0] != ' ')
- return NULL;
-
- fin = fopen (path, "rb");
- if (fin == NULL)
- return NULL;
-
- central_pos = unzlocal_SearchCentralDir (fin);
- if (central_pos == 0)
- err = UNZ_ERRNO;
-
- if (fseek (fin, central_pos, SEEK_SET) != 0)
- err = UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unzlocal_getLong (fin, &uL) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /* number of this disk */
- if (unzlocal_getShort (fin, &number_disk) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /* number of the disk with the start of the central directory */
- if (unzlocal_getShort (fin, &number_disk_with_CD) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /* total number of entries in the central dir on this disk */
- if (unzlocal_getShort (fin, &us.gi.number_entry) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /* total number of entries in the central dir */
- if (unzlocal_getShort (fin, &number_entry_CD) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if ((number_entry_CD != us.gi.number_entry) ||
- (number_disk_with_CD != 0) ||
- (number_disk != 0))
- err = UNZ_BADZIPFILE;
-
- /* size of the central directory */
- if (unzlocal_getLong (fin, &us.size_central_dir) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /*
- * offset of start of central directory with respect to the starting disk
- * number
- */
- if (unzlocal_getLong (fin, &us.offset_central_dir) != UNZ_OK)
- err = UNZ_ERRNO;
-
- /* zipfile comment length */
- if (unzlocal_getShort (fin, &us.gi.size_comment) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if ((central_pos < us.offset_central_dir + us.size_central_dir) &&
- (err == UNZ_OK))
- err = UNZ_BADZIPFILE;
-
- if (err != UNZ_OK)
- {
- fclose (fin);
- return NULL;
- }
- us.file = fin;
- us.byte_before_the_zipfile = central_pos -
- (us.offset_central_dir + us.size_central_dir);
- us.central_pos = central_pos;
- us.pfile_in_zip_read = NULL;
-
-
- s = (unz_s *) ALLOC (sizeof (unz_s));
- *s = us;
- unzGoToFirstFile ((unzFile) s);
- return (unzFile) s;
-}
-
-
-/*
- * Close a ZipFile opened with unzipOpen. If there is files inside the .Zip
- * opened with unzipOpenCurrentFile (see later), these files MUST be closed
- * with unzipCloseCurrentFile before call unzipClose. return UNZ_OK if there
- * is no problem.
- */
-extern int ZEXPORT
-unzClose (unzFile file)
-{
- unz_s *s;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
-
- if (s->pfile_in_zip_read != NULL)
- unzCloseCurrentFile (file);
-
- fclose (s->file);
- TRYFREE (s);
- return UNZ_OK;
-}
-
-
-/*
- * Write info about the ZipFile in the *pglobal_info structure. No
- * preparation of the structure is needed return UNZ_OK if there is no
- * problem.
- */
-extern int ZEXPORT
-unzGetGlobalInfo (unzFile file, unz_global_info * pglobal_info)
-{
- unz_s *s;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- *pglobal_info = s->gi;
- return UNZ_OK;
-}
-
-
-/*
- * Translate date/time from Dos format to tm_unz (readable more easilty)
- */
-local void
-unzlocal_DosDateToTmuDate (uLong ulDosDate, tm_unz * ptm)
-{
- uLong uDate;
- uDate = (uLong) (ulDosDate >> 16);
- ptm->tm_mday = (uInt) (uDate & 0x1f);
- ptm->tm_mon = (uInt) ((((uDate) & 0x1E0) / 0x20) - 1);
- ptm->tm_year = (uInt) (((uDate & 0x0FE00) / 0x0200) + 1980);
-
- ptm->tm_hour = (uInt) ((ulDosDate & 0xF800) / 0x800);
- ptm->tm_min = (uInt) ((ulDosDate & 0x7E0) / 0x20);
- ptm->tm_sec = (uInt) (2 * (ulDosDate & 0x1f));
-}
-
-/*
- * Get Info about the current file in the zipfile, with internal only info
- */
-local int unzlocal_GetCurrentFileInfoInternal
-OF ((unzFile file,
- unz_file_info * pfile_info,
- unz_file_info_internal
- * pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize));
-
- local int unzlocal_GetCurrentFileInfoInternal (
- unzFile file,
- unz_file_info * pfile_info,
- unz_file_info_internal * pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize)
-{
- unz_s *s;
- unz_file_info file_info;
- unz_file_info_internal file_info_internal;
- int err = UNZ_OK;
- uLong uMagic;
- long lSeek = 0;
-
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- if (fseek (s->file, s->pos_in_central_dir + s->byte_before_the_zipfile, SEEK_SET) != 0)
- err = UNZ_ERRNO;
-
-
- /* we check the magic */
- if (err == UNZ_OK)
- {
- if (unzlocal_getLong (s->file, &uMagic) != UNZ_OK)
- err = UNZ_ERRNO;
- else if (uMagic != 0x02014b50)
- err = UNZ_BADZIPFILE;
- }
- if (unzlocal_getShort (s->file, &file_info.version) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.version_needed) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.flag) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.compression_method) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &file_info.dosDate) != UNZ_OK)
- err = UNZ_ERRNO;
-
- unzlocal_DosDateToTmuDate (file_info.dosDate, &file_info.tmu_date);
-
- if (unzlocal_getLong (s->file, &file_info.crc) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &file_info.compressed_size) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &file_info.uncompressed_size) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.size_filename) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.size_file_extra) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.size_file_comment) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.disk_num_start) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &file_info.internal_fa) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &file_info.external_fa) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &file_info_internal.offset_curfile) != UNZ_OK)
- err = UNZ_ERRNO;
-
- lSeek += file_info.size_filename;
- if ((err == UNZ_OK) && (szFileName != NULL))
- {
- uLong uSizeRead;
- if (file_info.size_filename < fileNameBufferSize)
- {
- *(szFileName + file_info.size_filename) = '\0';
- uSizeRead = file_info.size_filename;
- } else
- uSizeRead = fileNameBufferSize;
-
- if ((file_info.size_filename > 0) && (fileNameBufferSize > 0))
- if (fread (szFileName, (uInt) uSizeRead, 1, s->file) != 1)
- err = UNZ_ERRNO;
- lSeek -= uSizeRead;
- }
- if ((err == UNZ_OK) && (extraField != NULL))
- {
- uLong uSizeRead;
- if (file_info.size_file_extra < extraFieldBufferSize)
- uSizeRead = file_info.size_file_extra;
- else
- uSizeRead = extraFieldBufferSize;
-
- if (lSeek != 0)
- {
- if (fseek (s->file, lSeek, SEEK_CUR) == 0)
- lSeek = 0;
- else
- err = UNZ_ERRNO;
- }
- if ((file_info.size_file_extra > 0) && (extraFieldBufferSize > 0))
- if (fread (extraField, (uInt) uSizeRead, 1, s->file) != 1)
- err = UNZ_ERRNO;
- lSeek += file_info.size_file_extra - uSizeRead;
- } else
- lSeek += file_info.size_file_extra;
-
-
- if ((err == UNZ_OK) && (szComment != NULL))
- {
- uLong uSizeRead;
- if (file_info.size_file_comment < commentBufferSize)
- {
- *(szComment + file_info.size_file_comment) = '\0';
- uSizeRead = file_info.size_file_comment;
- } else
- uSizeRead = commentBufferSize;
-
- if (lSeek != 0)
- {
- if (fseek (s->file, lSeek, SEEK_CUR) == 0)
- lSeek = 0;
- else
- err = UNZ_ERRNO;
- }
- if ((file_info.size_file_comment > 0) && (commentBufferSize > 0))
- if (fread (szComment, (uInt) uSizeRead, 1, s->file) != 1)
- err = UNZ_ERRNO;
- lSeek += file_info.size_file_comment - uSizeRead;
- } else
- lSeek += file_info.size_file_comment;
-
- if ((err == UNZ_OK) && (pfile_info != NULL))
- *pfile_info = file_info;
-
- if ((err == UNZ_OK) && (pfile_info_internal != NULL))
- *pfile_info_internal = file_info_internal;
-
- return err;
-}
-
-
-
-/*
- * Write info about the ZipFile in the *pglobal_info structure. No
- * preparation of the structure is needed return UNZ_OK if there is no
- * problem.
- */
-extern int ZEXPORT
-unzGetCurrentFileInfo (
- unzFile file,
- unz_file_info * pfile_info,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize)
-{
- return unzlocal_GetCurrentFileInfoInternal (file, pfile_info, NULL,
- szFileName, fileNameBufferSize,
- extraField, extraFieldBufferSize,
- szComment, commentBufferSize);
-}
-
-/*
- * Set the current file of the zipfile to the first file. return UNZ_OK if
- * there is no problem
- */
-extern int ZEXPORT
-unzGoToFirstFile (unzFile file)
-{
- int err = UNZ_OK;
- unz_s *s;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- s->pos_in_central_dir = s->offset_central_dir;
- s->num_file = 0;
- err = unzlocal_GetCurrentFileInfoInternal (file, &s->cur_file_info,
- &s->cur_file_info_internal,
- NULL, 0, NULL, 0, NULL, 0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-
-/*
- * Set the current file of the zipfile to the next file. return UNZ_OK if
- * there is no problem return UNZ_END_OF_LIST_OF_FILE if the actual file was
- * the latest.
- */
-extern int ZEXPORT
-unzGoToNextFile (unzFile file)
-{
- unz_s *s;
- int err;
-
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
- if (s->num_file + 1 == s->gi.number_entry)
- return UNZ_END_OF_LIST_OF_FILE;
-
- s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
- s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment;
- s->num_file++;
- err = unzlocal_GetCurrentFileInfoInternal (file, &s->cur_file_info,
- &s->cur_file_info_internal,
- NULL, 0, NULL, 0, NULL, 0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-
-/*
- * Try locate the file szFileName in the zipfile. For the iCaseSensitivity
- * signification, see unzipStringFileNameCompare
- *
- * return value : UNZ_OK if the file is found. It becomes the current file.
- * UNZ_END_OF_LIST_OF_FILE if the file is not found
- */
-extern int ZEXPORT
-unzLocateFile (
- unzFile file,
- const char *szFileName,
- int iCaseSensitivity)
-{
- unz_s *s;
- int err;
-
-
- uLong num_fileSaved;
- uLong pos_in_central_dirSaved;
-
-
- if (file == NULL)
- return UNZ_PARAMERROR;
-
- if (strlen (szFileName) >= UNZ_MAXFILENAMEINZIP)
- return UNZ_PARAMERROR;
-
- s = (unz_s *) file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
-
- num_fileSaved = s->num_file;
- pos_in_central_dirSaved = s->pos_in_central_dir;
-
- err = unzGoToFirstFile (file);
-
- while (err == UNZ_OK)
- {
- char szCurrentFileName[UNZ_MAXFILENAMEINZIP + 1];
- unzGetCurrentFileInfo (file, NULL,
- szCurrentFileName, sizeof (szCurrentFileName) - 1,
- NULL, 0, NULL, 0);
- if (unzStringFileNameCompare (szCurrentFileName,
- szFileName, iCaseSensitivity) == 0)
- return UNZ_OK;
- err = unzGoToNextFile (file);
- }
-
- s->num_file = num_fileSaved;
- s->pos_in_central_dir = pos_in_central_dirSaved;
- return err;
-}
-
-
-/*
- * Read the local header of the current zipfile Check the coherency of the
- * local header and info in the end of central directory about this file
- * store in *piSizeVar the size of extra info in local header (filename and
- * size of extra field data)
- */
-local int
-unzlocal_CheckCurrentFileCoherencyHeader (
- unz_s * s,
- uInt * piSizeVar,
- uLong * poffset_local_extrafield,
- uInt * psize_local_extrafield)
-{
- uLong uMagic, uData, uFlags;
- uLong size_filename;
- uLong size_extra_field;
- int err = UNZ_OK;
-
- *piSizeVar = 0;
- *poffset_local_extrafield = 0;
- *psize_local_extrafield = 0;
-
- if (fseek (s->file, s->cur_file_info_internal.offset_curfile +
- s->byte_before_the_zipfile, SEEK_SET) != 0)
- return UNZ_ERRNO;
-
-
- if (err == UNZ_OK)
- {
- if (unzlocal_getLong (s->file, &uMagic) != UNZ_OK)
- err = UNZ_ERRNO;
- else if (uMagic != 0x04034b50)
- err = UNZ_BADZIPFILE;
- }
-
- if (unzlocal_getShort (s->file, &uData) != UNZ_OK)
- err = UNZ_ERRNO;
- /*
- * else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion))
- * err=UNZ_BADZIPFILE;
- */
- if (unzlocal_getShort (s->file, &uFlags) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (unzlocal_getShort (s->file, &uData) != UNZ_OK)
- err = UNZ_ERRNO;
- else if ((err == UNZ_OK) && (uData != s->cur_file_info.compression_method))
- err = UNZ_BADZIPFILE;
-
- if ((err == UNZ_OK) &&
- s->cur_file_info.compression_method > Z_DEFLATED)
- err = UNZ_BADZIPFILE;
-
- if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* date/time */
- err = UNZ_ERRNO;
-
- if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* crc */
- err = UNZ_ERRNO;
- else if ((err == UNZ_OK) && (uData != s->cur_file_info.crc) &&
- ((uFlags & 8) == 0))
- err = UNZ_BADZIPFILE;
-
- if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* size compr */
- err = UNZ_ERRNO;
- else if ((err == UNZ_OK) && (uData != s->cur_file_info.compressed_size) &&
- ((uFlags & 8) == 0))
- err = UNZ_BADZIPFILE;
-
- if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* size uncompr */
- err = UNZ_ERRNO;
- else if ((err == UNZ_OK) && (uData != s->cur_file_info.uncompressed_size) &&
- ((uFlags & 8) == 0))
- err = UNZ_BADZIPFILE;
-
-
- if (unzlocal_getShort (s->file, &size_filename) != UNZ_OK)
- err = UNZ_ERRNO;
- else if ((err == UNZ_OK) && (size_filename != s->cur_file_info.size_filename))
- err = UNZ_BADZIPFILE;
-
- *piSizeVar += (uInt) size_filename;
-
- if (unzlocal_getShort (s->file, &size_extra_field) != UNZ_OK)
- err = UNZ_ERRNO;
- *poffset_local_extrafield = s->cur_file_info_internal.offset_curfile +
- SIZEZIPLOCALHEADER + size_filename;
- *psize_local_extrafield = (uInt) size_extra_field;
-
- *piSizeVar += (uInt) size_extra_field;
-
- return err;
-}
-
-/*
- * Open for reading data the current file in the zipfile. If there is no
- * error and the file is opened, the return value is UNZ_OK.
- */
-extern int ZEXPORT
-unzOpenCurrentFile (unzFile file)
-{
- int err = UNZ_OK;
- uInt iSizeVar;
- unz_s *s;
- file_in_zip_read_info_s *pfile_in_zip_read_info;
- uLong offset_local_extrafield; /* offset of the local extra
- * field */
- uInt size_local_extrafield; /* size of the local extra
- * field */
-
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- if (!s->current_file_ok)
- return UNZ_PARAMERROR;
-
- if (s->pfile_in_zip_read != NULL)
- unzCloseCurrentFile (file);
-
- if (unzlocal_CheckCurrentFileCoherencyHeader (s, &iSizeVar,
- &offset_local_extrafield, &size_local_extrafield) != UNZ_OK)
- return UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info = (file_in_zip_read_info_s *)
- ALLOC (sizeof (file_in_zip_read_info_s));
- if (pfile_in_zip_read_info == NULL)
- return UNZ_INTERNALERROR;
-
- pfile_in_zip_read_info->read_buffer = (char *) ALLOC (UNZ_BUFSIZE);
- pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
- pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
- pfile_in_zip_read_info->pos_local_extrafield = 0;
-
- if (pfile_in_zip_read_info->read_buffer == NULL)
- {
- TRYFREE (pfile_in_zip_read_info);
- return UNZ_INTERNALERROR;
- }
- pfile_in_zip_read_info->stream_initialised = 0;
-
- if (s->cur_file_info.compression_method > Z_DEFLATED)
- err = UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info->crc32_wait = s->cur_file_info.crc;
- pfile_in_zip_read_info->crc32 = 0;
- pfile_in_zip_read_info->compression_method =
- s->cur_file_info.compression_method;
- pfile_in_zip_read_info->file = s->file;
- pfile_in_zip_read_info->byte_before_the_zipfile = s->byte_before_the_zipfile;
-
- pfile_in_zip_read_info->stream.total_out = 0;
-
- switch (s->cur_file_info.compression_method)
- {
- case UNZ_STORED:
- break;
- case UNZ_SHRUNK:
- break;
- case UNZ_REDUCED1:
- case UNZ_REDUCED2:
- case UNZ_REDUCED3:
- case UNZ_REDUCED4:
- break;
- case UNZ_IMPLODED:
- break;
- case UNZ_DEFLATED:
- pfile_in_zip_read_info->stream.zalloc = (alloc_func) 0;
- pfile_in_zip_read_info->stream.zfree = (free_func) 0;
- pfile_in_zip_read_info->stream.opaque = (voidpf) 0;
-
- err = inflateInit2 (&pfile_in_zip_read_info->stream, -MAX_WBITS);
- if (err == Z_OK)
- pfile_in_zip_read_info->stream_initialised = 1;
- /*
- * windowBits is passed < 0 to tell that there is no zlib header.
- * Note that in this case inflate *requires* an extra "dummy" byte
- * after the compressed stream in order to complete decompression and
- * return Z_STREAM_END. In unzip, i don't wait absolutely
- * Z_STREAM_END because I known the size of both compressed and
- * uncompressed data
- */
- break;
- default:
- return UNZ_INTERNALERROR;
- break;
- }
- pfile_in_zip_read_info->rest_read_compressed =
- s->cur_file_info.compressed_size;
- pfile_in_zip_read_info->rest_read_uncompressed =
- s->cur_file_info.uncompressed_size;
-
- pfile_in_zip_read_info->pos_in_zipfile =
- s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
- iSizeVar;
-
- pfile_in_zip_read_info->stream.avail_in = (uInt) 0;
- s->pfile_in_zip_read = pfile_in_zip_read_info;
- return UNZ_OK;
-}
-
-
-/*
- * Read bytes from the current file. buf contain buffer where data must be
- * copied len the size of buf.
- *
- * return the number of byte copied if somes bytes are copied return 0 if the
- * end of file was reached return <0 with error code if there is an error
- * (UNZ_ERRNO for IO error, or zLib error for uncompress error)
- */
-
-file_in_zip_read_info_s *pfile_in_zip_read_info = NULL;
-unz_s *pUnzip = NULL;
-extern int ZEXPORT
-unzReadCurrentFile (
- unzFile file,
- voidp buf,
- unsigned len)
-{
- int err = UNZ_OK;
- uInt iRead = 0;
- unz_s *s;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- pUnzip = s;
- pfile_in_zip_read_info = s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info == NULL)
- return UNZ_PARAMERROR;
-
-
- if ((pfile_in_zip_read_info->read_buffer == NULL))
- return UNZ_END_OF_LIST_OF_FILE;
- if (len == 0)
- return 0;
-
- pfile_in_zip_read_info->stream.next_out = (Bytef *) buf;
-
- pfile_in_zip_read_info->stream.avail_out = (uInt) len;
-
- if (len > pfile_in_zip_read_info->rest_read_uncompressed)
- pfile_in_zip_read_info->stream.avail_out =
- (uInt) pfile_in_zip_read_info->rest_read_uncompressed;
-
- while (pfile_in_zip_read_info->stream.avail_out > 0 && err == UNZ_OK)
- {
- switch (pfile_in_zip_read_info->compression_method)
- {
- case UNZ_STORED:
- case UNZ_DEFLATED:
- if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
- (pfile_in_zip_read_info->rest_read_compressed > 0))
- {
- uInt uReadThis = UNZ_BUFSIZE;
- if (pfile_in_zip_read_info->rest_read_compressed < uReadThis)
- uReadThis = (uInt) pfile_in_zip_read_info->rest_read_compressed;
- if (uReadThis == 0)
- return UNZ_EOF;
- if (fseek (pfile_in_zip_read_info->file,
- pfile_in_zip_read_info->pos_in_zipfile +
- pfile_in_zip_read_info->byte_before_the_zipfile, SEEK_SET) != 0)
- return UNZ_ERRNO;
- if (fread (pfile_in_zip_read_info->read_buffer, uReadThis, 1,
- pfile_in_zip_read_info->file) != 1)
- return UNZ_ERRNO;
- pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
-
- pfile_in_zip_read_info->rest_read_compressed -= uReadThis;
-
- pfile_in_zip_read_info->stream.next_in =
- (Bytef *) pfile_in_zip_read_info->read_buffer;
- pfile_in_zip_read_info->stream.avail_in = (uInt) uReadThis;
- }
- break;
- }
- switch (pfile_in_zip_read_info->compression_method)
- {
- case UNZ_STORED:
- {
- uInt uDoCopy, i;
- if (pfile_in_zip_read_info->stream.avail_out <
- pfile_in_zip_read_info->stream.avail_in)
- uDoCopy = pfile_in_zip_read_info->stream.avail_out;
- else
- uDoCopy = pfile_in_zip_read_info->stream.avail_in;
-
- for (i = 0; i < uDoCopy; i++)
- *(pfile_in_zip_read_info->stream.next_out + i) =
- *(pfile_in_zip_read_info->stream.next_in + i);
-
- pfile_in_zip_read_info->crc32 = crc32 (pfile_in_zip_read_info->crc32,
- pfile_in_zip_read_info->stream.next_out,
- uDoCopy);
- pfile_in_zip_read_info->rest_read_uncompressed -= uDoCopy;
- pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
- pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
- pfile_in_zip_read_info->stream.next_out += uDoCopy;
- pfile_in_zip_read_info->stream.next_in += uDoCopy;
- pfile_in_zip_read_info->stream.total_out += uDoCopy;
- iRead += uDoCopy;
- break;
- }
- case UNZ_SHRUNK:
- iRead = pfile_in_zip_read_info->rest_read_uncompressed;
- unShrink ();
- break;
- case UNZ_REDUCED1:
- case UNZ_REDUCED2:
- case UNZ_REDUCED3:
- case UNZ_REDUCED4:
- iRead = pfile_in_zip_read_info->rest_read_uncompressed;
- unReduce ();
- break;
- case UNZ_IMPLODED:
- iRead = pfile_in_zip_read_info->rest_read_uncompressed;
- err = explode ();
- break;
- case UNZ_DEFLATED:
- {
- uLong uTotalOutBefore, uTotalOutAfter;
- const Bytef *bufBefore;
- uLong uOutThis;
- int flush = Z_SYNC_FLUSH;
-
- uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
- bufBefore = pfile_in_zip_read_info->stream.next_out;
-
- /*
- * if ((pfile_in_zip_read_info->rest_read_uncompressed ==
- * pfile_in_zip_read_info->stream.avail_out) &&
- * (pfile_in_zip_read_info->rest_read_compressed == 0)) flush =
- * Z_FINISH;
- */
- err = inflate (&pfile_in_zip_read_info->stream, flush);
-
- uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
- uOutThis = uTotalOutAfter - uTotalOutBefore;
-
- pfile_in_zip_read_info->crc32 =
- crc32 (pfile_in_zip_read_info->crc32, bufBefore,
- (uInt) (uOutThis));
-
- pfile_in_zip_read_info->rest_read_uncompressed -=
- uOutThis;
-
- iRead += (uInt) (uTotalOutAfter - uTotalOutBefore);
-
- if (err == Z_STREAM_END)
- return (iRead == 0) ? UNZ_EOF : iRead;
- if (err != Z_OK)
- break;
- break;
- }
- default:
- return (UNZ_EOF);
- }
- }
-
- if (err == Z_OK)
- return iRead;
- return err;
-}
-
-
-/*
- * Give the current position in uncompressed data
- */
-extern z_off_t ZEXPORT
-unztell (unzFile file)
-{
- unz_s *s;
- file_in_zip_read_info_s *pfile_in_zip_read_info;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- pfile_in_zip_read_info = s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info == NULL)
- return UNZ_PARAMERROR;
-
- return (z_off_t) pfile_in_zip_read_info->stream.total_out;
-}
-
-
-/*
- * return 1 if the end of file was reached, 0 elsewhere
- */
-extern int ZEXPORT
-unzeof (unzFile file)
-{
- unz_s *s;
- file_in_zip_read_info_s *pfile_in_zip_read_info;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- pfile_in_zip_read_info = s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info == NULL)
- return UNZ_PARAMERROR;
-
- if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
- return 1;
- else
- return 0;
-}
-
-
-
-/*
- * Read extra field from the current file (opened by unzOpenCurrentFile) This
- * is the local-header version of the extra field (sometimes, there is more
- * info in the local-header version than in the central-header)
- *
- * if buf==NULL, it return the size of the local extra field that can be read
- *
- * if buf!=NULL, len is the size of the buffer, the extra header is copied in
- * buf. the return value is the number of bytes copied in buf, or (if <0) the
- * error code
- */
-extern int ZEXPORT
-unzGetLocalExtrafield (
- unzFile file,
- voidp buf,
- unsigned len)
-{
- unz_s *s;
- file_in_zip_read_info_s *pfile_in_zip_read_info;
- uInt read_now;
- uLong size_to_read;
-
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- pfile_in_zip_read_info = s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info == NULL)
- return UNZ_PARAMERROR;
-
- size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
- pfile_in_zip_read_info->pos_local_extrafield);
-
- if (buf == NULL)
- return (int) size_to_read;
-
- if (len > size_to_read)
- read_now = (uInt) size_to_read;
- else
- read_now = (uInt) len;
-
- if (read_now == 0)
- return 0;
-
- if (fseek (pfile_in_zip_read_info->file,
- pfile_in_zip_read_info->offset_local_extrafield +
- pfile_in_zip_read_info->pos_local_extrafield, SEEK_SET) != 0)
- return UNZ_ERRNO;
-
- if (fread (buf, (uInt) size_to_read, 1, pfile_in_zip_read_info->file) != 1)
- return UNZ_ERRNO;
-
- return (int) read_now;
-}
-
-/*
- * Close the file in zip opened with unzipOpenCurrentFile Return UNZ_CRCERROR
- * if all the file was read but the CRC is not good
- */
-extern int ZEXPORT
-unzCloseCurrentFile (unzFile file)
-{
- int err = UNZ_OK;
-
- unz_s *s;
- file_in_zip_read_info_s *pfile_in_zip_read_info;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
- pfile_in_zip_read_info = s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info == NULL)
- return UNZ_PARAMERROR;
-
-
- if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
- {
- if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
- err = UNZ_CRCERROR;
- }
- TRYFREE (pfile_in_zip_read_info->read_buffer);
- pfile_in_zip_read_info->read_buffer = NULL;
- if (pfile_in_zip_read_info->stream_initialised)
- inflateEnd (&pfile_in_zip_read_info->stream);
-
- pfile_in_zip_read_info->stream_initialised = 0;
- TRYFREE (pfile_in_zip_read_info);
-
- s->pfile_in_zip_read = NULL;
-
- return err;
-}
-
-
-/*
- * Get the global comment string of the ZipFile, in the szComment buffer.
- * uSizeBuf is the size of the szComment buffer. return the number of byte
- * copied or an error code <0
- */
-extern int ZEXPORT
-unzGetGlobalComment (
- unzFile file,
- char *szComment,
- uLong uSizeBuf)
-{
- unz_s *s;
- uLong uReadThis;
- if (file == NULL)
- return UNZ_PARAMERROR;
- s = (unz_s *) file;
-
- uReadThis = uSizeBuf;
- if (uReadThis > s->gi.size_comment)
- uReadThis = s->gi.size_comment;
-
- if (fseek (s->file, s->central_pos + 22, SEEK_SET) != 0)
- return UNZ_ERRNO;
-
- if (uReadThis > 0)
- {
- *szComment = '\0';
- if (fread (szComment, (uInt) uReadThis, 1, s->file) != 1)
- return UNZ_ERRNO;
- }
- if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
- *(szComment + s->gi.size_comment) = '\0';
- return (int) uReadThis;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 14:04:23 +0000