From ea45df9e3b551a048efb73a6e1ec57aa0f766551 Mon Sep 17 00:00:00 2001 From: gunnar_g Date: Fri, 26 Nov 2010 12:22:35 +0000 Subject: [PATCH] Switched to internal zipping/unzipping routines. --- src/zip/Makefile.am | 11 + src/zip/unzip.c | 1259 +++++++++++++++++++++++++++++++++++++++++++ src/zip/unzip.h | 275 ++++++++++ src/zip/zip.c | 709 ++++++++++++++++++++++++ src/zip/zip.h | 155 ++++++ 5 files changed, 2409 insertions(+) create mode 100644 src/zip/Makefile.am create mode 100644 src/zip/unzip.c create mode 100644 src/zip/unzip.h create mode 100644 src/zip/zip.c create mode 100644 src/zip/zip.h diff --git a/src/zip/Makefile.am b/src/zip/Makefile.am new file mode 100644 index 00000000..25b03218 --- /dev/null +++ b/src/zip/Makefile.am @@ -0,0 +1,11 @@ +INCLUDES = $(INCDIRS) $(DEBUG_FLAGS) $(CPPFLAGS) + +noinst_LTLIBRARIES = libminizip.la + +libminizip_la_SOURCES = \ + zip.c \ + zip.h \ + unzip.c \ + unzip.h + +CLEANFILES = *~ diff --git a/src/zip/unzip.c b/src/zip/unzip.c new file mode 100644 index 00000000..6592a19d --- /dev/null +++ b/src/zip/unzip.c @@ -0,0 +1,1259 @@ +/* unzip.c -- IO on .zip files using zlib + Version 0.15 beta, Mar 19th, 1998, + + Modified by Ryan Nunn. Nov 9th 2001 + + Read unzip.h for more info +*/ + + + +/* Added by Ryan Nunn */ +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include "zlib.h" +#include "unzip.h" + +#ifdef STDC +# include +# include +# include +#endif +#ifdef NO_ERRNO_H + extern int errno; +#else +# include +#endif + + +#ifndef local +# define local static +#endif +/* compile with -Dlocal if your debugger can't find static symbols */ + + + +#if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) && \ + !defined(CASESENSITIVITYDEFAULT_NO) +#define CASESENSITIVITYDEFAULT_NO +#endif + + +#ifndef UNZ_BUFSIZE +#define UNZ_BUFSIZE (16384) +#endif + +#ifndef UNZ_MAXFILENAMEINZIP +#define UNZ_MAXFILENAMEINZIP (256) +#endif + +#ifndef ALLOC +# define ALLOC(size) (malloc(size)) +#endif +#ifndef TRYFREE +# define TRYFREE(p) {if (p) free(p);} +#endif + +#define SIZECENTRALDIRITEM (0x2e) +#define SIZEZIPLOCALHEADER (0x1e) + + +/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ + +#ifndef SEEK_CUR +#define SEEK_CUR 1 +#endif + +#ifndef SEEK_END +#define SEEK_END 2 +#endif + +#ifndef SEEK_SET +#define SEEK_SET 0 +#endif + +const char unz_copyright[] = + " unzip 0.15 Copyright 1998 Gilles Vollant "; + +/* unz_file_info_interntal contain internal info about a file in zipfile*/ +typedef struct unz_file_info_internal_s +{ + uLong offset_curfile;/* relative offset of local header 4 bytes */ +} unz_file_info_internal; + + +/* file_in_zip_read_info_s contain internal information about a file in zipfile, + when reading and decompress it */ +typedef struct +{ + char *read_buffer; /* internal buffer for compressed data */ + z_stream stream; /* zLib stream structure for inflate */ + + uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ + uLong stream_initialised; /* flag set if stream structure is initialised*/ + + uLong offset_local_extrafield;/* offset of the local extra field */ + uInt size_local_extrafield;/* size of the local extra field */ + uLong pos_local_extrafield; /* position in the local extra field in read*/ + + uLong crc32; /* crc32 of all data uncompressed */ + uLong crc32_wait; /* crc32 we must obtain after decompress all */ + uLong rest_read_compressed; /* number of byte to be decompressed */ + uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/ + FILE* file; /* io structore of the zipfile */ + uLong compression_method; /* compression method (0==store) */ + uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ +} file_in_zip_read_info_s; + + +/* unz_s contain internal information about the zipfile +*/ +typedef struct +{ + FILE* file; /* io structore of the zipfile */ + unz_global_info gi; /* public global information */ + uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ + uLong num_file; /* number of the current file in the zipfile*/ + uLong pos_in_central_dir; /* pos of the current file in the central dir*/ + uLong current_file_ok; /* flag about the usability of the current file*/ + uLong central_pos; /* position of the beginning of the central dir*/ + + uLong size_central_dir; /* size of the central directory */ + uLong offset_central_dir; /* offset of start of central directory with + respect to the starting disk number */ + + unz_file_info cur_file_info; /* public info about the current file in zip*/ + unz_file_info_internal cur_file_info_internal; /* private info about it*/ + file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current + file if we are decompressing it */ +} unz_s; + + +/* =========================================================================== + 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 (c1c2) + 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 (uBackReaduMaxBack) + 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=(int)uReadSize-3; (i--)>0;) + 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_pospfile_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 (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_filename0) && (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_extrafile,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_commentfile,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!=0) && + (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; + int Store; + 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!=0) && + (s->cur_file_info.compression_method!=Z_DEFLATED)) + err=UNZ_BADZIPFILE; + Store = s->cur_file_info.compression_method==0; + + 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; + + if (!Store) + { + 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 + */ + } + 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) +*/ +extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len) +{ + int err=UNZ_OK; + uInt iRead = 0; + 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->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) + { + 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_compressedrest_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; + } + + if (pfile_in_zip_read_info->compression_method==0) + { + 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;istream.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; + } + else + { + 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; + } + } + + 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; +} + diff --git a/src/zip/unzip.h b/src/zip/unzip.h new file mode 100644 index 00000000..e0a20ab7 --- /dev/null +++ b/src/zip/unzip.h @@ -0,0 +1,275 @@ +/* unzip.h -- IO for uncompress .zip files using zlib + Version 0.15 beta, Mar 19th, 1998, + + Copyright (C) 1998 Gilles Vollant + + This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g + WinZip, InfoZip tools and compatible. + Encryption and multi volume ZipFile (span) are not supported. + Old compressions used by old PKZip 1.x are not supported + + THIS IS AN ALPHA VERSION. AT THIS STAGE OF DEVELOPPEMENT, SOMES API OR STRUCTURE + CAN CHANGE IN FUTURE VERSION !! + I WAIT FEEDBACK at mail info@winimage.com + Visit also http://www.winimage.com/zLibDll/unzip.html for evolution + + Condition of use and distribution are the same than zlib : + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + +*/ +/* for more info about .ZIP format, see + ftp://ftp.cdrom.com/pub/infozip/doc/appnote-970311-iz.zip + PkWare has also a specification at : + ftp://ftp.pkware.com/probdesc.zip */ + +#ifndef _unz_H +#define _unz_H + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef _ZLIB_H +#include "zlib.h" +#endif + +#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP) +/* like the STRICT of WIN32, we define a pointer that cannot be converted + from (void*) without cast */ +typedef struct TagunzFile__ { int unused; } unzFile__; +typedef unzFile__ *unzFile; +#else +typedef voidp unzFile; +#endif + + +#define UNZ_OK (0) +#define UNZ_END_OF_LIST_OF_FILE (-100) +#define UNZ_ERRNO (Z_ERRNO) +#define UNZ_EOF (0) +#define UNZ_PARAMERROR (-102) +#define UNZ_BADZIPFILE (-103) +#define UNZ_INTERNALERROR (-104) +#define UNZ_CRCERROR (-105) + +/* tm_unz contain date/time info */ +typedef struct tm_unz_s +{ + uInt tm_sec; /* seconds after the minute - [0,59] */ + uInt tm_min; /* minutes after the hour - [0,59] */ + uInt tm_hour; /* hours since midnight - [0,23] */ + uInt tm_mday; /* day of the month - [1,31] */ + uInt tm_mon; /* months since January - [0,11] */ + uInt tm_year; /* years - [1980..2044] */ +} tm_unz; + +/* unz_global_info structure contain global data about the ZIPfile + These data comes from the end of central dir */ +typedef struct unz_global_info_s +{ + uLong number_entry; /* total number of entries in + the central dir on this disk */ + uLong size_comment; /* size of the global comment of the zipfile */ +} unz_global_info; + + +/* unz_file_info contain information about a file in the zipfile */ +typedef struct unz_file_info_s +{ + uLong version; /* version made by 2 bytes */ + uLong version_needed; /* version needed to extract 2 bytes */ + uLong flag; /* general purpose bit flag 2 bytes */ + uLong compression_method; /* compression method 2 bytes */ + uLong dosDate; /* last mod file date in Dos fmt 4 bytes */ + uLong crc; /* crc-32 4 bytes */ + uLong compressed_size; /* compressed size 4 bytes */ + uLong uncompressed_size; /* uncompressed size 4 bytes */ + uLong size_filename; /* filename length 2 bytes */ + uLong size_file_extra; /* extra field length 2 bytes */ + uLong size_file_comment; /* file comment length 2 bytes */ + + uLong disk_num_start; /* disk number start 2 bytes */ + uLong internal_fa; /* internal file attributes 2 bytes */ + uLong external_fa; /* external file attributes 4 bytes */ + + tm_unz tmu_date; +} unz_file_info; + +extern int ZEXPORT unzStringFileNameCompare OF ((const char* fileName1, + const char* fileName2, + int iCaseSensitivity)); +/* + 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 unzFile ZEXPORT unzOpen OF((const char *path)); +/* + Open a Zip file. path contain the full pathname (by example, + on a Windows NT computer "c:\\zlib\\zlib111.zip" or on an Unix computer + "zlib/zlib111.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 int ZEXPORT unzClose OF((unzFile file)); +/* + Close a ZipFile opened with unzipOpen. + If there is files inside the .Zip opened with unzOpenCurrentFile (see later), + these files MUST be closed with unzipCloseCurrentFile before call unzipClose. + return UNZ_OK if there is no problem. */ + +extern int ZEXPORT unzGetGlobalInfo OF((unzFile file, + unz_global_info *pglobal_info)); +/* + 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 unzGetGlobalComment OF((unzFile file, + char *szComment, + uLong uSizeBuf)); +/* + 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 +*/ + + +/***************************************************************************/ +/* Unzip package allow you browse the directory of the zipfile */ + +extern int ZEXPORT unzGoToFirstFile OF((unzFile file)); +/* + Set the current file of the zipfile to the first file. + return UNZ_OK if there is no problem +*/ + +extern int ZEXPORT unzGoToNextFile OF((unzFile file)); +/* + 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 unzLocateFile OF((unzFile file, + const char *szFileName, + int iCaseSensitivity)); +/* + Try locate the file szFileName in the zipfile. + For the iCaseSensitivity signification, see unzStringFileNameCompare + + 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 unzGetCurrentFileInfo OF((unzFile file, + unz_file_info *pfile_info, + char *szFileName, + uLong fileNameBufferSize, + void *extraField, + uLong extraFieldBufferSize, + char *szComment, + uLong commentBufferSize)); +/* + Get Info about the current file + if pfile_info!=NULL, the *pfile_info structure will contain somes info about + the current file + if szFileName!=NULL, the filemane string will be copied in szFileName + (fileNameBufferSize is the size of the buffer) + if extraField!=NULL, the extra field information will be copied in extraField + (extraFieldBufferSize is the size of the buffer). + This is the Central-header version of the extra field + if szComment!=NULL, the comment string of the file will be copied in szComment + (commentBufferSize is the size of the buffer) +*/ + +/***************************************************************************/ +/* for reading the content of the current zipfile, you can open it, read data + from it, and close it (you can close it before reading all the file) + */ + +extern int ZEXPORT unzOpenCurrentFile OF((unzFile file)); +/* + Open for reading data the current file in the zipfile. + If there is no error, the return value is UNZ_OK. +*/ + +extern int ZEXPORT unzCloseCurrentFile OF((unzFile file)); +/* + Close the file in zip opened with unzOpenCurrentFile + Return UNZ_CRCERROR if all the file was read but the CRC is not good +*/ + + +extern int ZEXPORT unzReadCurrentFile OF((unzFile file, + voidp buf, + unsigned len)); +/* + Read bytes from the current file (opened by unzOpenCurrentFile) + 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) +*/ + +extern z_off_t ZEXPORT unztell OF((unzFile file)); +/* + Give the current position in uncompressed data +*/ + +extern int ZEXPORT unzeof OF((unzFile file)); +/* + return 1 if the end of file was reached, 0 elsewhere +*/ + +extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file, + voidp buf, + unsigned len)); +/* + 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 + + 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 +*/ + +#ifdef __cplusplus +} +#endif + +#endif /* _unz_H */ diff --git a/src/zip/zip.c b/src/zip/zip.c new file mode 100644 index 00000000..a7b7015b --- /dev/null +++ b/src/zip/zip.c @@ -0,0 +1,709 @@ +/* zip.c -- IO on .zip files using zlib + Version 0.15 beta, Mar 19th, 1998, + + Modified by Ryan Nunn(exult). Nov 9th 2001 + Modified by Max Horn(exult). + + Read zip.h for more info +*/ + +#include +#include +#include +#include "zlib.h" +#include "zip.h" + +#ifdef STDC +# include +# include +# include +#endif +#ifdef NO_ERRNO_H + extern int errno; +#else +# include +#endif + +/* Added by Max Horn - work around a work around in zlib 1.1.3 on MacOS */ +#if defined(MACOS) || defined(TARGET_OS_MAC) +typedef unsigned char Byte; /* 8 bits */ +#endif + +#ifndef VERSIONMADEBY +# define VERSIONMADEBY (0x0) /* platform depedent */ +#endif + +#ifndef Z_BUFSIZE +#define Z_BUFSIZE (16384) +#endif + +#ifndef Z_MAXFILENAMEINZIP +#define Z_MAXFILENAMEINZIP (256) +#endif + +#ifndef ALLOC +# define ALLOC(size) (malloc(size)) +#endif +#ifndef TRYFREE +# define TRYFREE(p) {if (p) free(p);} +#endif + +/* +#define SIZECENTRALDIRITEM (0x2e) +#define SIZEZIPLOCALHEADER (0x1e) +*/ + +/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ + +#ifndef SEEK_CUR +#define SEEK_CUR 1 +#endif + +#ifndef SEEK_END +#define SEEK_END 2 +#endif + +#ifndef SEEK_SET +#define SEEK_SET 0 +#endif + +const char zip_copyright[] = + " zip 0.15 Copyright 1998 Gilles Vollant "; + + +#define SIZEDATA_INDATABLOCK (4096-(4*4)) + +#define LOCALHEADERMAGIC (0x04034b50) +#define CENTRALHEADERMAGIC (0x02014b50) +#define ENDHEADERMAGIC (0x06054b50) + +#define FLAG_LOCALHEADER_OFFSET (0x06) +#define CRC_LOCALHEADER_OFFSET (0x0e) + +#define SIZECENTRALHEADER (0x2e) /* 46 */ + +typedef struct linkedlist_datablock_internal_s +{ + struct linkedlist_datablock_internal_s* next_datablock; + uLong avail_in_this_block; + uLong filled_in_this_block; + uLong unused; /* for future use and alignement */ + unsigned char data[SIZEDATA_INDATABLOCK]; +} linkedlist_datablock_internal; + +typedef struct linkedlist_data_s +{ + linkedlist_datablock_internal* first_block; + linkedlist_datablock_internal* last_block; +} linkedlist_data; + +typedef struct +{ + z_stream stream; /* zLib stream structure for inflate */ + int stream_initialised; /* 1 is stream is initialised */ + uInt pos_in_buffered_data; /* last written byte in buffered_data */ + + uLong pos_local_header; /* offset of the local header of the file + currenty writing */ + char* central_header; /* central header data for the current file */ + uLong size_centralheader; /* size of the central header for cur file */ + uLong flag; /* flag of the file currently writing */ + + int method; /* compression method of file currenty wr.*/ + Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/ + uLong dosDate; + uLong crc32; +} curfile_info; + +typedef struct +{ + FILE * filezip; + linkedlist_data central_dir;/* datablock with central dir in construction*/ + int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/ + curfile_info ci; /* info on the file curretly writing */ + + uLong begin_pos; /* position of the beginning of the zipfile */ + uLong number_entry; +} zip_internal; + +static linkedlist_datablock_internal* allocate_new_datablock() +{ + linkedlist_datablock_internal* ldi; + ldi = (linkedlist_datablock_internal*) + ALLOC(sizeof(linkedlist_datablock_internal)); + if (ldi!=NULL) + { + ldi->next_datablock = NULL ; + ldi->filled_in_this_block = 0 ; + ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ; + } + return ldi; +} + +static void free_datablock(linkedlist_datablock_internal* ldi) +{ + while (ldi!=NULL) + { + linkedlist_datablock_internal* ldinext = ldi->next_datablock; + TRYFREE(ldi); + ldi = ldinext; + } +} + +static void init_linkedlist(linkedlist_data* ll) +{ + ll->first_block = ll->last_block = NULL; +} + +static void free_linkedlist(linkedlist_data* ll) +{ + free_datablock(ll->first_block); + ll->first_block = ll->last_block = NULL; +} + + +static int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) +{ + linkedlist_datablock_internal* ldi; + const unsigned char* from_copy; + + if (ll==NULL) + return ZIP_INTERNALERROR; + + if (ll->last_block == NULL) + { + ll->first_block = ll->last_block = allocate_new_datablock(); + if (ll->first_block == NULL) + return ZIP_INTERNALERROR; + } + + ldi = ll->last_block; + from_copy = (const unsigned char*)buf; + + while (len>0) + { + uInt copy_this; + uInt i; + unsigned char* to_copy; + + if (ldi->avail_in_this_block==0) + { + ldi->next_datablock = allocate_new_datablock(); + if (ldi->next_datablock == NULL) + return ZIP_INTERNALERROR; + ldi = ldi->next_datablock ; + ll->last_block = ldi; + } + + if (ldi->avail_in_this_block < len) + copy_this = (uInt)ldi->avail_in_this_block; + else + copy_this = (uInt)len; + + to_copy = &(ldi->data[ldi->filled_in_this_block]); + + for (i=0;ifilled_in_this_block += copy_this; + ldi->avail_in_this_block -= copy_this; + from_copy += copy_this ; + len -= copy_this; + } + return ZIP_OK; +} + + +static int write_datablock(FILE* fout, linkedlist_data* ll) +{ + linkedlist_datablock_internal* ldi; + ldi = ll->first_block; + while (ldi!=NULL) + { + if (ldi->filled_in_this_block > 0) + if (fwrite(ldi->data,(uInt)ldi->filled_in_this_block,1,fout)!=1) + return ZIP_ERRNO; + ldi = ldi->next_datablock; + } + return ZIP_OK; +} + +/****************************************************************************/ + +/* =========================================================================== + Outputs a long in LSB order to the given file + nbByte == 1, 2 or 4 (byte, short or long) +*/ + +static int ziplocal_putValue (FILE *file, uLong x, int nbByte); +static int ziplocal_putValue (FILE *file, uLong x, int nbByte) +{ + unsigned char buf[4]; + int n; + for (n = 0; n < nbByte; n++) { + buf[n] = (unsigned char)(x & 0xff); + x >>= 8; + } + if (fwrite(buf,nbByte,1,file)!=1) + return ZIP_ERRNO; + else + return ZIP_OK; +} + +static void ziplocal_putValue_inmemory (void* dest, uLong x, int nbByte); +static void ziplocal_putValue_inmemory (void* dest, uLong x, int nbByte) +{ + unsigned char* buf=(unsigned char*)dest; + int n; + for (n = 0; n < nbByte; n++) { + buf[n] = (unsigned char)(x & 0xff); + x >>= 8; + } +} +/****************************************************************************/ + + +static uLong ziplocal_TmzDateToDosDate(const tm_zip* ptm, uLong uLongdosDate) +{ + uLong year = (uLong)ptm->tm_year; + if (year>1980) + year-=1980; + else if (year>80) + year-=80; + return + (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) | + ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour)); +} + + +/****************************************************************************/ + +extern zipFile ZEXPORT zipOpen (const char *pathname, int append) +{ + zip_internal ziinit; + zip_internal* zi; + + ziinit.filezip = NULL; + +/* Start changes by Ryan Nunn to fix append mode bug */ + + /* If append, use r+b mode, will fail if not exist */ + if (append != 0) + ziinit.filezip = fopen(pathname,"r+b"); + + /* If not append, or failed, use wb */ + if (ziinit.filezip == NULL) + ziinit.filezip = fopen(pathname,"wb"); + + /* Still doesn't exist, means can't create */ + if (ziinit.filezip == NULL) + return NULL; + + /* Make sure we are at the end of the file */ + fseek (ziinit.filezip, 0, SEEK_END); + +/* End changes by Ryan Nunn to fix append mode bug */ + + ziinit.begin_pos = ftell(ziinit.filezip); + ziinit.in_opened_file_inzip = 0; + ziinit.ci.stream_initialised = 0; + ziinit.number_entry = 0; + init_linkedlist(&(ziinit.central_dir)); + + + zi = (zip_internal*)ALLOC(sizeof(zip_internal)); + if (zi==NULL) + { + fclose(ziinit.filezip); + return NULL; + } + + *zi = ziinit; + return (zipFile)zi; +} + +extern int ZEXPORT zipOpenNewFileInZip (zipFile file, + const char* filename, + const zip_fileinfo* zipfi, + const void* extrafield_local, + uInt size_extrafield_local, + const void* extrafield_global, + uInt size_extrafield_global, + const char* comment, + int method, + int level) +{ + zip_internal* zi; + uInt size_filename; + uInt size_comment; + uInt i; + int err = ZIP_OK; + + if (file == NULL) + return ZIP_PARAMERROR; + if ((method!=0) && (method!=Z_DEFLATED)) + return ZIP_PARAMERROR; + + zi = (zip_internal*)file; + + if (zi->in_opened_file_inzip == 1) + { + err = zipCloseFileInZip (file); + if (err != ZIP_OK) + return err; + } + + + if (filename==NULL) + filename="-"; + + if (comment==NULL) + size_comment = 0; + else + size_comment = strlen(comment); + + size_filename = strlen(filename); + + if (zipfi == NULL) + zi->ci.dosDate = 0; + else + { + if (zipfi->dosDate != 0) + zi->ci.dosDate = zipfi->dosDate; + else zi->ci.dosDate = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate); + } + + zi->ci.flag = 0; + if ((level==8) || (level==9)) + zi->ci.flag |= 2; + if ((level==2)) + zi->ci.flag |= 4; + if ((level==1)) + zi->ci.flag |= 6; + + zi->ci.crc32 = 0; + zi->ci.method = method; + zi->ci.stream_initialised = 0; + zi->ci.pos_in_buffered_data = 0; + zi->ci.pos_local_header = ftell(zi->filezip); + zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + + size_extrafield_global + size_comment; + zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader); + + ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4); + /* version info */ + ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2); + ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2); + ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2); + ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2); + ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4); + ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/ + ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/ + ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/ + ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2); + ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2); + ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2); + ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/ + + if (zipfi==NULL) + ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2); + else + ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2); + + if (zipfi==NULL) + ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4); + else + ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4); + + ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header,4); + + for (i=0;ici.central_header+SIZECENTRALHEADER+i) = *(filename+i); + + for (i=0;ici.central_header+SIZECENTRALHEADER+size_filename+i) = + *(((const char*)extrafield_global)+i); + + for (i=0;ici.central_header+SIZECENTRALHEADER+size_filename+ + size_extrafield_global+i) = *(filename+i); + if (zi->ci.central_header == NULL) + return ZIP_INTERNALERROR; + + /* write the local header */ + err = ziplocal_putValue(zi->filezip,(uLong)LOCALHEADERMAGIC,4); + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)20,2);/* version needed to extract */ + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.flag,2); + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.method,2); + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.dosDate,4); + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)0,4); /* crc 32, unknown */ + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)0,4); /* compressed size, unknown */ + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)0,4); /* uncompressed size, unknown */ + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)size_filename,2); + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)size_extrafield_local,2); + + if ((err==ZIP_OK) && (size_filename>0)) + if (fwrite(filename,(uInt)size_filename,1,zi->filezip)!=1) + err = ZIP_ERRNO; + + if ((err==ZIP_OK) && (size_extrafield_local>0)) + if (fwrite(extrafield_local,(uInt)size_extrafield_local,1,zi->filezip) + !=1) + err = ZIP_ERRNO; + + zi->ci.stream.avail_in = (uInt)0; + zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; + zi->ci.stream.next_out = zi->ci.buffered_data; + zi->ci.stream.total_in = 0; + zi->ci.stream.total_out = 0; + + if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED)) + { + zi->ci.stream.zalloc = (alloc_func)0; + zi->ci.stream.zfree = (free_func)0; + zi->ci.stream.opaque = (voidpf)0; + + err = deflateInit2(&zi->ci.stream, level, + Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, 0); + + if (err==Z_OK) + zi->ci.stream_initialised = 1; + } + + + if (err==Z_OK) + zi->in_opened_file_inzip = 1; + return err; +} + +extern int ZEXPORT zipWriteInFileInZip (zipFile file, const voidp buf, unsigned len) +{ + zip_internal* zi; + int err=ZIP_OK; + + if (file == NULL) + return ZIP_PARAMERROR; + zi = (zip_internal*)file; + + if (zi->in_opened_file_inzip == 0) + return ZIP_PARAMERROR; + + zi->ci.stream.next_in = (Bytef *)buf; + zi->ci.stream.avail_in = len; + zi->ci.crc32 = crc32(zi->ci.crc32,(Bytef *)buf,len); + + while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0)) + { + if (zi->ci.stream.avail_out == 0) + { + if (fwrite(zi->ci.buffered_data,(uInt)zi->ci.pos_in_buffered_data,1,zi->filezip) + !=1) + err = ZIP_ERRNO; + zi->ci.pos_in_buffered_data = 0; + zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; + zi->ci.stream.next_out = zi->ci.buffered_data; + } + + if (zi->ci.method == Z_DEFLATED) + { + uLong uTotalOutBefore = zi->ci.stream.total_out; + err=deflate(&zi->ci.stream, Z_NO_FLUSH); + zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ; + + } + else + { + uInt copy_this,i; + if (zi->ci.stream.avail_in < zi->ci.stream.avail_out) + copy_this = zi->ci.stream.avail_in; + else + copy_this = zi->ci.stream.avail_out; + for (i=0;ici.stream.next_out)+i) = + *(((const char*)zi->ci.stream.next_in)+i); + { + zi->ci.stream.avail_in -= copy_this; + zi->ci.stream.avail_out-= copy_this; + zi->ci.stream.next_in+= copy_this; + zi->ci.stream.next_out+= copy_this; + zi->ci.stream.total_in+= copy_this; + zi->ci.stream.total_out+= copy_this; + zi->ci.pos_in_buffered_data += copy_this; + } + } + } + + return 0; +} + +extern int ZEXPORT zipCloseFileInZip (zipFile file) +{ + zip_internal* zi; + int err=ZIP_OK; + + if (file == NULL) + return ZIP_PARAMERROR; + zi = (zip_internal*)file; + + if (zi->in_opened_file_inzip == 0) + return ZIP_PARAMERROR; + zi->ci.stream.avail_in = 0; + + if (zi->ci.method == Z_DEFLATED) + while (err==ZIP_OK) + { + uLong uTotalOutBefore; + if (zi->ci.stream.avail_out == 0) + { + if (fwrite(zi->ci.buffered_data,(uInt)zi->ci.pos_in_buffered_data,1,zi->filezip) + !=1) + err = ZIP_ERRNO; + zi->ci.pos_in_buffered_data = 0; + zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; + zi->ci.stream.next_out = zi->ci.buffered_data; + } + uTotalOutBefore = zi->ci.stream.total_out; + err=deflate(&zi->ci.stream, Z_FINISH); + zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ; + } + + if (err==Z_STREAM_END) + err=ZIP_OK; /* this is normal */ + + if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK)) + if (fwrite(zi->ci.buffered_data,(uInt)zi->ci.pos_in_buffered_data,1,zi->filezip) + !=1) + err = ZIP_ERRNO; + + if ((zi->ci.method == Z_DEFLATED) && (err==ZIP_OK)) + { + err=deflateEnd(&zi->ci.stream); + zi->ci.stream_initialised = 0; + } + + ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)zi->ci.crc32,4); /*crc*/ + ziplocal_putValue_inmemory(zi->ci.central_header+20, + (uLong)zi->ci.stream.total_out,4); /*compr size*/ + ziplocal_putValue_inmemory(zi->ci.central_header+24, + (uLong)zi->ci.stream.total_in,4); /*uncompr size*/ + + if (err==ZIP_OK) + err = add_data_in_datablock(&zi->central_dir,zi->ci.central_header, + (uLong)zi->ci.size_centralheader); + free(zi->ci.central_header); + + if (err==ZIP_OK) + { + long cur_pos_inzip = ftell(zi->filezip); + if (fseek(zi->filezip, + zi->ci.pos_local_header + 14,SEEK_SET)!=0) + err = ZIP_ERRNO; + + if (err==ZIP_OK) + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.crc32,4); /* crc 32, unknown */ + + if (err==ZIP_OK) /* compressed size, unknown */ + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.stream.total_out,4); + + if (err==ZIP_OK) /* uncompressed size, unknown */ + err = ziplocal_putValue(zi->filezip,(uLong)zi->ci.stream.total_in,4); + + if (fseek(zi->filezip, + cur_pos_inzip,SEEK_SET)!=0) + err = ZIP_ERRNO; + } + + zi->number_entry ++; + zi->in_opened_file_inzip = 0; + + return err; +} + +extern int ZEXPORT zipClose (zipFile file, const char* global_comment) +{ + zip_internal* zi; + int err = 0; + uLong size_centraldir = 0; + uLong centraldir_pos_inzip ; + uInt size_global_comment; + if (file == NULL) + return ZIP_PARAMERROR; + zi = (zip_internal*)file; + + if (zi->in_opened_file_inzip == 1) + { + err = zipCloseFileInZip (file); + } + + if (global_comment==NULL) + size_global_comment = 0; + else + size_global_comment = strlen(global_comment); + + + centraldir_pos_inzip = ftell(zi->filezip); + if (err==ZIP_OK) + { + linkedlist_datablock_internal* ldi = zi->central_dir.first_block ; + while (ldi!=NULL) + { + if ((err==ZIP_OK) && (ldi->filled_in_this_block>0)) + if (fwrite(ldi->data,(uInt)ldi->filled_in_this_block, + 1,zi->filezip) !=1 ) + err = ZIP_ERRNO; + + size_centraldir += ldi->filled_in_this_block; + ldi = ldi->next_datablock; + } + } + free_datablock(zi->central_dir.first_block); + + if (err==ZIP_OK) /* Magic End */ + err = ziplocal_putValue(zi->filezip,(uLong)ENDHEADERMAGIC,4); + + if (err==ZIP_OK) /* number of this disk */ + err = ziplocal_putValue(zi->filezip,(uLong)0,2); + + if (err==ZIP_OK) /* number of the disk with the start of the central directory */ + err = ziplocal_putValue(zi->filezip,(uLong)0,2); + + if (err==ZIP_OK) /* total number of entries in the central dir on this disk */ + err = ziplocal_putValue(zi->filezip,(uLong)zi->number_entry,2); + + if (err==ZIP_OK) /* total number of entries in the central dir */ + err = ziplocal_putValue(zi->filezip,(uLong)zi->number_entry,2); + + if (err==ZIP_OK) /* size of the central directory */ + err = ziplocal_putValue(zi->filezip,(uLong)size_centraldir,4); + + if (err==ZIP_OK) /* offset of start of central directory with respect to the + starting disk number */ + err = ziplocal_putValue(zi->filezip,(uLong)centraldir_pos_inzip ,4); + + if (err==ZIP_OK) /* zipfile comment length */ + err = ziplocal_putValue(zi->filezip,(uLong)size_global_comment,2); + + if ((err==ZIP_OK) && (size_global_comment>0)) + if (fwrite(global_comment,(uInt)size_global_comment,1,zi->filezip) !=1 ) + err = ZIP_ERRNO; + fclose(zi->filezip); + TRYFREE(zi); + + return err; +} + diff --git a/src/zip/zip.h b/src/zip/zip.h new file mode 100644 index 00000000..4182d2bf --- /dev/null +++ b/src/zip/zip.h @@ -0,0 +1,155 @@ +/* zip.h -- IO for compress .zip files using zlib + Version 0.15 alpha, Mar 19th, 1998, + + Copyright (C) 1998 Gilles Vollant + + This unzip package allow creates .ZIP file, compatible with PKZip 2.04g + WinZip, InfoZip tools and compatible. + Encryption and multi volume ZipFile (span) are not supported. + Old compressions used by old PKZip 1.x are not supported + + For uncompress .zip file, look at unzip.h + + THIS IS AN ALPHA VERSION. AT THIS STAGE OF DEVELOPPEMENT, SOMES API OR STRUCTURE + CAN CHANGE IN FUTURE VERSION !! + I WAIT FEEDBACK at mail info@winimage.com + Visit also http://www.winimage.com/zLibDll/unzip.html for evolution + + Condition of use and distribution are the same than zlib : + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + +*/ + +/* for more info about .ZIP format, see + ftp://ftp.cdrom.com/pub/infozip/doc/appnote-970311-iz.zip + PkWare has also a specification at : + ftp://ftp.pkware.com/probdesc.zip +*/ + +#ifndef _zip_H +#define _zip_H + +#ifndef _ZLIB_H +#include "zlib.h" +#endif + +#if defined(STRICTZIP) || defined(STRICTZIPUNZIP) +/* like the STRICT of WIN32, we define a pointer that cannot be converted + from (void*) without cast */ +typedef struct TagzipFile__ { int unused; } zipFile__; +typedef zipFile__ *zipFile; +#else +typedef voidp zipFile; +#endif + +#define ZIP_OK (0) +#define ZIP_ERRNO (Z_ERRNO) +#define ZIP_PARAMERROR (-102) +#define ZIP_INTERNALERROR (-104) + +/* default memLevel */ +#ifndef DEF_MEM_LEVEL +# if MAX_MEM_LEVEL >= 8 +# define DEF_MEM_LEVEL 8 +# else +# define DEF_MEM_LEVEL MAX_MEM_LEVEL +# endif +#endif + +/* tm_zip contain date/time info */ +typedef struct tm_zip_s +{ + uInt tm_sec; /* seconds after the minute - [0,59] */ + uInt tm_min; /* minutes after the hour - [0,59] */ + uInt tm_hour; /* hours since midnight - [0,23] */ + uInt tm_mday; /* day of the month - [1,31] */ + uInt tm_mon; /* months since January - [0,11] */ + uInt tm_year; /* years - [1980..2044] */ +} tm_zip; + +typedef struct +{ + tm_zip tmz_date; /* date in understandable format */ + uLong dosDate; /* if dos_date == 0, tmu_date is used */ +/* uLong flag; */ /* general purpose bit flag 2 bytes */ + + uLong internal_fa; /* internal file attributes 2 bytes */ + uLong external_fa; /* external file attributes 4 bytes */ +} zip_fileinfo; + +extern zipFile ZEXPORT zipOpen OF((const char *pathname, int append)); +/* + Create a zipfile. + pathname contain on Windows NT a filename like "c:\\zlib\\zlib111.zip" or on + an Unix computer "zlib/zlib111.zip". + if the file pathname exist and append=1, the zip will be created at the end + of the file. (useful if the file contain a self extractor code) + If the zipfile cannot be opened, the return value is NULL. + Else, the return value is a zipFile Handle, usable with other function + of this zip package. + + +*/ + +extern int ZEXPORT zipOpenNewFileInZip OF((zipFile file, + const char* filename, + const zip_fileinfo* zipfi, + const void* extrafield_local, + uInt size_extrafield_local, + const void* extrafield_global, + uInt size_extrafield_global, + const char* comment, + int method, + int level)); +/* + Open a file in the ZIP for writing. + filename : the filename in zip (if NULL, '-' without quote will be used + *zipfi contain supplemental information + if extrafield_local!=NULL and size_extrafield_local>0, extrafield_local + contains the extrafield data the the local header + if extrafield_global!=NULL and size_extrafield_global>0, extrafield_global + contains the extrafield data the the local header + if comment != NULL, comment contain the comment string + method contain the compression method (0 for store, Z_DEFLATED for deflate) + level contain the level of compression (can be Z_DEFAULT_COMPRESSION) +*/ + +extern int ZEXPORT zipWriteInFileInZip OF((zipFile file, + const voidp buf, + unsigned len)); +/* + Write data in the zipfile +*/ + +extern int ZEXPORT zipCloseFileInZip OF((zipFile file)); +/* + Close the current file in the zipfile +*/ + +extern int ZEXPORT zipClose OF((zipFile file, + const char* global_comment)); +/* + Close the zipfile +*/ + +#ifdef __cplusplus +} +#endif + +#endif /* _zip_H */