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/*---------------------------------------------------------------------------
api.c
This module supplies an UnZip engine for use directly from C/C++
programs. The functions are:
UzpVer *UzpVersion(void);
void UzpVersion2(UzpVer2 *version)
int UzpMain(int argc, char *argv[]);
int UzpAltMain(int argc, char *argv[], UzpInit *init);
int UzpUnzipToMemory(char *zip, char *file, UzpBuffer *retstr);
int UzpValidate(char *archive, int AllCodes);
int UzpGrep(char *archive, char *file, char *pattern, int cmd, int SkipBin);
OS/2 only (for now):
int UzpFileTree(char *name, cbList(callBack), char *cpInclude[],
char *cpExclude[]);
You must define `DLL' in order to include the API extensions.
---------------------------------------------------------------------------*/
#ifdef OS2
# define INCL_DOSMEMMGR
# include <os2.h>
#endif
#include <setjmp.h>
#define UNZIP_INTERNAL
#include "unzip.h"
#include "version.h"
#ifdef WINDLL
# include "windll\windll.h"
#endif
#ifdef USE_ZLIB
# include "zlib.h"
#endif
jmp_buf dll_error_return;
/*---------------------------------------------------------------------------
Documented API entry points
---------------------------------------------------------------------------*/
UzpVer * UZ_EXP UzpVersion() /* should be pointer to const struct */
{
static UzpVer version; /* doesn't change between calls */
version.structlen = UZPVER_LEN;
#ifdef BETA
version.flag = 1;
#else
version.flag = 0;
#endif
version.betalevel = BETALEVEL;
version.date = VERSION_DATE;
#ifdef ZLIB_VERSION
version.zlib_version = ZLIB_VERSION;
version.flag |= 2;
#else
version.zlib_version = NULL;
#endif
/* someday each of these may have a separate patchlevel: */
version.unzip.major = UZ_MAJORVER;
version.unzip.minor = UZ_MINORVER;
version.unzip.patchlevel = PATCHLEVEL;
version.zipinfo.major = ZI_MAJORVER;
version.zipinfo.minor = ZI_MINORVER;
version.zipinfo.patchlevel = PATCHLEVEL;
/* these are retained for backward compatibility only: */
version.os2dll.major = UZ_MAJORVER;
version.os2dll.minor = UZ_MINORVER;
version.os2dll.patchlevel = PATCHLEVEL;
version.windll.major = UZ_MAJORVER;
version.windll.minor = UZ_MINORVER;
version.windll.patchlevel = PATCHLEVEL;
return &version;
}
void UZ_EXP UzpVersion2(UzpVer2 *version)
{
version->structlen = UZPVER_LEN;
#ifdef BETA
version->flag = 1;
#else
version->flag = 0;
#endif
strcpy(version->betalevel, BETALEVEL);
strcpy(version->date, VERSION_DATE);
#ifdef ZLIB_VERSION
strcpy(version->zlib_version, ZLIB_VERSION);
version->flag |= 2;
#else
version->zlib_version[0] = '\0';
#endif
/* someday each of these may have a separate patchlevel: */
version->unzip.major = UZ_MAJORVER;
version->unzip.minor = UZ_MINORVER;
version->unzip.patchlevel = PATCHLEVEL;
version->zipinfo.major = ZI_MAJORVER;
version->zipinfo.minor = ZI_MINORVER;
version->zipinfo.patchlevel = PATCHLEVEL;
/* these are retained for backward compatibility only: */
version->os2dll.major = UZ_MAJORVER;
version->os2dll.minor = UZ_MINORVER;
version->os2dll.patchlevel = PATCHLEVEL;
version->windll.major = UZ_MAJORVER;
version->windll.minor = UZ_MINORVER;
version->windll.patchlevel = PATCHLEVEL;
}
#ifndef WINDLL
int UZ_EXP UzpAltMain(int argc, char *argv[], UzpInit *init)
{
int r, (*dummyfn)();
CONSTRUCTGLOBALS();
if (init->structlen >= (sizeof(ulg) + sizeof(dummyfn)) && init->msgfn)
G.message = init->msgfn;
if (init->structlen >= (sizeof(ulg) + 2*sizeof(dummyfn)) && init->inputfn)
G.input = init->inputfn;
if (init->structlen >= (sizeof(ulg) + 3*sizeof(dummyfn)) && init->pausefn)
G.mpause = init->pausefn;
if (init->structlen >= (sizeof(ulg) + 4*sizeof(dummyfn)) && init->userfn)
(*init->userfn)(); /* allow void* arg? */
r = unzip(__G__ argc, argv);
DESTROYGLOBALS()
RETURN(r);
}
#endif
int UZ_EXP UzpUnzipToMemory(char *zip, char *file, UzpBuffer *retstr)
{
int r;
#if (defined(WINDLL) && !defined(CRTL_CP_IS_ISO))
char *intern_zip, *intern_file;
#endif
CONSTRUCTGLOBALS();
#if (defined(WINDLL) && !defined(CRTL_CP_IS_ISO))
intern_zip = (char *)malloc(strlen(zip)+1);
if (intern_zip == NULL)
return PK_MEM;
intern_file = (char *)malloc(strlen(file)+1);
if (intern_file == NULL) {
free(intern_zip);
return PK_MEM;
}
ISO_TO_INTERN(zip, intern_zip);
ISO_TO_INTERN(file, intern_file);
# define zip intern_zip
# define file intern_file
#endif
G.redirect_data = 1;
r = unzipToMemory(__G__ zip, file, retstr)==0;
DESTROYGLOBALS()
#if (defined(WINDLL) && !defined(CRTL_CP_IS_ISO))
# undef file
# undef zip
free(intern_file);
free(intern_zip);
#endif
return r;
}
#ifdef OS2DLL
int UZ_EXP UzpFileTree(char *name, cbList(callBack), char *cpInclude[],
char *cpExclude[])
{
int r;
CONSTRUCTGLOBALS();
G.qflag = 2;
G.vflag = 1;
G.C_flag = 1;
G.wildzipfn = name;
G.process_all_files = TRUE;
if (cpInclude) {
char **ptr = cpInclude;
while (*ptr != NULL) ptr++;
G.filespecs = ptr - cpInclude;
G.pfnames = cpInclude, G.process_all_files = FALSE;
}
if (cpExclude) {
char **ptr = cpExclude;
while (*ptr != NULL) ptr++;
G.xfilespecs = ptr - cpExclude;
G.pxnames = cpExclude, G.process_all_files = FALSE;
} else
G.processExternally = callBack;
r = process_zipfiles(__G)==0;
DESTROYGLOBALS()
return r;
}
#endif /* OS2DLL */
/*---------------------------------------------------------------------------
Helper functions
---------------------------------------------------------------------------*/
void setFileNotFound(__G)
__GDEF
{
G.filenotfound++;
}
int unzipToMemory(__GPRO__ char *zip, char *file, UzpBuffer *retstr)
{
int r;
char *incname[2];
G.process_all_files = FALSE;
G.extract_flag = TRUE;
G.qflag = 2;
G.C_flag = 1;
G.wildzipfn = zip;
G.pfnames = incname;
incname[0] = file;
incname[1] = NULL;
G.filespecs = 1;
redirect_outfile(__G);
r = process_zipfiles(__G);
if (retstr) {
retstr->strptr = (char *)G.redirect_buffer;
retstr->strlength = G.redirect_size;
}
r |= G.filenotfound;
if (r)
return r; /* GRR: these two lines don't make much sense... */
return r;
}
int redirect_outfile(__G)
__GDEF
{
G.redirect_size = G.lrec.ucsize;
#ifdef OS2
DosAllocMem((void **)&G.redirect_buffer, G.redirect_size+1,
PAG_READ|PAG_WRITE|PAG_COMMIT);
G.redirect_pointer = G.redirect_buffer;
#else
G.redirect_pointer = G.redirect_buffer = malloc(G.redirect_size+1);
#endif
if (!G.redirect_buffer)
return FALSE;
G.redirect_pointer[G.redirect_size] = 0;
return TRUE;
}
int writeToMemory(__GPRO__ uch *rawbuf, ulg size)
{
if (rawbuf != G.redirect_pointer)
memcpy(G.redirect_pointer,rawbuf,size);
G.redirect_pointer += size;
return 0;
}
/* Purpose: Determine if file in archive contains the string szSearch
Parameters: archive = archive name
file = file contained in the archive. This cannot be
a wild card to be meaningful
pattern = string to search for
cmd = 0 - case-insensitive search
1 - case-sensitve search
2 - case-insensitive, whole words only
3 - case-sensitive, whole words only
SkipBin = if true, skip any files that have control
characters other than CR, LF, or tab in the first
100 characters.
Returns: TRUE if a match is found
FALSE if no match is found
-1 on error
Comments: This does not pretend to be as useful as the standard
Unix grep, which returns the strings associated with a
particular pattern, nor does it search past the first
matching occurrence of the pattern.
*/
int UZ_EXP UzpGrep(char *archive, char *file, char *pattern, int cmd,
int SkipBin)
{
int retcode = FALSE, compare;
ulg i, j, patternLen, buflen;
char * sz, *p;
UzpBuffer retstr;
#ifdef WINDLL
LPUSERFUNCTIONS lpTemp;
#endif
#ifdef WINDLL
/* Turn off any windows printing functions, as they may not have been
* identified yet. There is no requirement that we initialize the
* dll with printing stuff for this. */
UzpNoPrinting(TRUE);
/* If we haven't initialized the Windows user functions, the pointer
* for the comment flag may simply have garbage in it, and as a result
* will take off into never-never land. Save it off, make it null, and
* restore it below. */
lpTemp = lpUserFunctions;
lpUserFunctions = NULL;
#endif
if (!UzpUnzipToMemory(archive, file, &retstr)) {
#ifdef WINDLL
lpUserFunctions = lpTemp;
UzpNoPrinting(FALSE);
#endif
return -1; /* not enough memory, file not found, or other error */
}
if (SkipBin) {
if (retstr.strlength < 100)
buflen = retstr.strlength;
else
buflen = 100;
for (i = 0; i < buflen; i++) {
if (iscntrl(retstr.strptr[i])) {
if ((retstr.strptr[i] != 0x0A) &&
(retstr.strptr[i] != 0x0D) &&
(retstr.strptr[i] != 0x09))
{
/* OK, we now think we have a binary file of some sort */
free(retstr.strptr);
#ifdef WINDLL
lpUserFunctions = lpTemp;
UzpNoPrinting(FALSE);
#endif
return FALSE;
}
}
}
}
patternLen = strlen(pattern);
if (retstr.strlength < patternLen) {
#ifdef WINDLL
lpUserFunctions = lpTemp;
UzpNoPrinting(FALSE);
#endif
return FALSE;
}
sz = malloc(patternLen + 3); /* add two in case doing whole words only */
if (cmd > 1) {
strcpy(sz, " ");
strcat(sz, pattern);
strcat(sz, " ");
} else
strcpy(sz, pattern);
if ((cmd == 0) || (cmd == 2)) {
for (i = 0; i < strlen(sz); i++)
sz[i] = toupper(sz[i]);
for (i = 0; i < retstr.strlength; i++)
retstr.strptr[i] = toupper(retstr.strptr[i]);
}
for (i = 0; i < (retstr.strlength - patternLen); i++) {
p = &retstr.strptr[i];
compare = TRUE;
for (j = 0; j < patternLen; j++) {
/* We cannot do strncmp here, as we may be dealing with a
* "binary" file, such as a word processing file, or perhaps
* even a true executable of some sort. */
if (p[j] != sz[j]) {
compare = FALSE;
break;
}
}
if (compare == TRUE) {
retcode = TRUE;
break;
}
}
free(sz);
free(retstr.strptr);
#ifdef WINDLL
lpUserFunctions = lpTemp;
UzpNoPrinting(FALSE);
#endif
return retcode;
}
int UZ_EXP UzpValidate(char *archive, int AllCodes)
{
int retcode;
CONSTRUCTGLOBALS();
G.jflag = 1;
G.tflag = 1;
G.overwrite_none = 0;
G.extract_flag = (!G.zipinfo_mode &&
!G.cflag && !G.tflag && !G.vflag && !G.zflag
#ifdef TIMESTAMP
&& !G.T_flag
#endif
);
G.qflag = 2; /* turn off all messages */
G.fValidate = TRUE;
G.pfnames = &fnames[0]; /* assign default filename vector */
#ifdef WINDLL
UzpNoPrinting(TRUE);
#endif
if (archive == NULL) { /* something is screwed up: no filename */
DESTROYGLOBALS();
return PK_NOZIP;
}
G.wildzipfn = (char *)malloc(FILNAMSIZ + 1);
strcpy(G.wildzipfn, archive);
#if (defined(WINDLL) && !defined(CRTL_CP_IS_ISO))
_ISO_INTERN(G.wildzipfn);
#endif
G.process_all_files = TRUE; /* for speed */
retcode = setjmp(dll_error_return);
if (retcode) {
#ifdef WINDLL
UzpNoPrinting(FALSE);
#endif
free(G.wildzipfn);
DESTROYGLOBALS();
return PK_BADERR;
}
retcode = process_zipfiles(__G);
free(G.wildzipfn);
#ifdef WINDLL
UzpNoPrinting(FALSE);
#endif
DESTROYGLOBALS();
/* PK_WARN == 1 and PK_FIND == 11. When we are just looking at an
archive, we should still be able to see the files inside it,
even if we can't decode them for some reason.
We also still want to be able to get at files even if there is
something odd about the zip archive, hence allow PK_WARN,
PK_FIND, IZ_UNSUP as well as PK_ERR
*/
if (AllCodes)
return retcode;
if ((retcode == PK_OK) || (retcode == PK_WARN) || (retcode == PK_ERR) ||
(retcode == IZ_UNSUP) || (retcode == PK_FIND))
return TRUE;
else
return FALSE;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.