NetNews Usenet Archive 1992 #19

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Internet Message Format | 1992-09-01 | 47.2 KB

Path: sparky!uunet!cs.utexas.edu!usc!orion.oac.uci.edu!unogate!mvb.saic.com!vmsnet-sources From: goathunter@wkuvx1.bitnet Newsgroups: vmsnet.sources Subject: Zip v1.9 & UnZip v5.0, part 06/22 Message-ID: <8009613@MVB.SAIC.COM> Date: Tue, 01 Sep 1992 22:50:05 GMT Organization: Western Kentucky University, Bowling Green, KY Lines: 1397 Approved: Mark.Berryman@Mvb.Saic.Com Submitted-by: goathunter@wkuvx1.bitnet Posting-number: Volume 3, Issue 128 Archive-name: zip_unzip/part06 -+-+-+-+-+-+-+-+ START OF PART 6 -+-+-+-+-+-+-+-+ X /* A directory was extracted. It had a trailing /,`20 X * don't report the error below. */ X if (created) `7B X printf(" Creating: %s", filename); X#ifdef OS2 X SetPathInfo(filename, lrec.last_mod_file_date, X lrec.last_mod_file_time, -1); X if (extra_field) X SetEAs(filename, extra_field); X#endif X printf("\n"); X `7D X return 2; /* but skip file */ X `7D X X if (*name == '\0') `7B X fprintf(stderr, "mapname: conversion of `5B%s`5D failed\n", filenam Ve); X return 3; X `7D X X#ifdef OS2 X if (!longname && ((longname = !IsFileNameValid(name)) != 0)) `7B X /* in case of second call after user renamed the file, skip this */ X last = strrchr(name, '/'); /* THIS time, save for file_io */ X last = last ? last + 1 : name; /* only last component */ X strcpy(longfilename, last); X fprintf(stderr, "renaming \"%s\"", name); X ChangeNameForFAT(last); X fprintf(stderr, " to \"%s\"\n", name); X `7D X#endif /* OS2 */ X X#ifdef VMS X /* convert filename to legal VMS one, substituting underscores for X * all invalid characters */ X for (np = name; *np; ++np) X if (!(isdigit(*np) `7C`7C isalpha(*np) `7C`7C (*np == '$') `7C`7C X (*np == '-') `7C`7C (*np == '_') `7C`7C (*np == '.') `7C`7C (*np V == ';'))) X *np = '_'; X#endif /* VMS */ X X if (!jflag) `7B X#ifdef VMS X *xp++ = '`5D'; /* proper end-of-dir-name delimiter * V/ X if (xp == cdp) `7B /* no path-name stuff, so... */ X strcpy(filename, name); /* copy file name into global */ X cdp -= 2; /* prepare to free malloc'd space */ X `7D else `7B /* we've added path-name stuff... * V/ X *xp = '\0'; /* so terminate and convert to */ X dp = cdp; /* VMS subdir separators (skip */ X while (*++dp) /* first char: better not be */ X if (*dp == '/') /* "/"): change all slashes */ X *dp = '.'; /* to dots */ X cdp -= 2; /* include leading bracket and dot */ X strcpy(filename, cdp); /* copy VMS-style path name into global V */ X strcat(filename, name); /* concatenate file name to global */ X `7D X#else /* !VMS */ X strcpy(filename, cdp); /* either "" or slash-terminated path * V/ X strcat(filename, name); /* append file name to path name */ X#endif /* ?VMS */ X free(cdp); X `7D else X strcpy(filename, name); /* copy converted name into global */ X X#if PATH_MAX < (FILNAMSIZ - 1) X /* check the length of the file name and truncate if necessary */ X if (PATH_MAX < strlen(filename)) `7B X fprintf(stderr, "caution: truncating filename\n"); X filename`5BPATH_MAX`5D = '\0'; X fprintf(stderr, "`5B %s `5D\n", filename); X return 1; /* 1: warning error */ X `7D X#endif X X return 0; X`7D $ CALL UNPACK [.UNZIP50]MAPNAME.C;1 1631201166 $ create 'f' X/*-------------------------------------------------------------------------- V- X X match.c X X The match() routine recursively compares a string to a "pattern" (regular X expression), returning TRUE if a match is found or FALSE if not. This X version is specifically for use with unzip.c: as did the previous match() X from SEA, it leaves the case (upper, lower, or mixed) of the string alone, X but converts any uppercase characters in the pattern to lowercase if indi- X cated by the global var pInfo->lcflag (which is to say, string is assumed X to have been converted to lowercase already, if such was necessary). X X -------------------------------------------------------------------------- V-*/ X X X#ifdef ZIPINFO X# undef ZIPINFO /* make certain there is only one version of match.o */ X#endif /* ZIPINFO */ X#include "unzip.h" X Xstatic int matche __((register char *p, register char *t)); Xstatic int matche_after_star __((register char *p, register char *t)); X X/* #include "filmatch.h": */ X#ifndef BOOLEAN X# define BOOLEAN short int /* v1.2 made it short */ X#endif X X/* match defines */ X#define MATCH_PATTERN 6 /* bad pattern */ X#define MATCH_LITERAL 5 /* match failure on literal match */ X#define MATCH_RANGE 4 /* match failure on `5B..`5D construct */ X#define MATCH_ABORT 3 /* premature end of text string */ X#define MATCH_END 2 /* premature end of pattern string */ X#define MATCH_VALID 1 /* valid match */ X X/* pattern defines */ X#define PATTERN_VALID 0 /* valid pattern */ X#define PATTERN_ESC -1 /* literal escape at end of pattern */ X#define PATTERN_RANGE -2 /* malformed range in `5B..`5D construct */ X#define PATTERN_CLOSE -3 /* no end bracket in `5B..`5D construct */ X#define PATTERN_EMPTY -4 /* `5B..`5D contstruct is empty */ X X/*-------------------------------------------------------------------------- V-- X* X* Match the pattern PATTERN against the string TEXT; X* X* match() returns TRUE if pattern matches, FALSE otherwise. X* matche() returns MATCH_VALID if pattern matches, or an errorcode X* as follows otherwise: X* X* MATCH_PATTERN - bad pattern X* MATCH_RANGE - match failure on `5B..`5D construct X* MATCH_ABORT - premature end of text string X* MATCH_END - premature end of pattern string X* MATCH_VALID - valid match X* X* X* A match means the entire string TEXT is used up in matching. X* X* In the pattern string: X* `60*' matches any sequence of characters (zero or more) X* `60?' matches any character X* `5BSET`5D matches any character in the specified set, X* `5B!SET`5D or `5B`5ESET`5D matches any character not in the specifie Vd set. X* X* A set is composed of characters or ranges; a range looks like X* character hyphen character (as in 0-9 or A-Z). `5B0-9a-zA-Z_`5D is the X* minimal set of characters allowed in the `5B..`5D pattern construct. X* Other characters are allowed (ie. 8 bit characters) if your system X* will support them. X* X* To suppress the special syntactic significance of any of `60`5B`5D*?!`5E- V\', X* in a `5B..`5D construct and match the character exactly, precede it X* with a `60\'. X* X---------------------------------------------------------------------------- V*/ X X/*-------------------------------------------------------------------------- V-- X* X* Match the pattern PATTERN against the string TEXT; X* X* returns MATCH_VALID if pattern matches, or an errorcode as follows X* otherwise: X* X* MATCH_PATTERN - bad pattern X* MATCH_RANGE - match failure on `5B..`5D construct X* MATCH_ABORT - premature end of text string X* MATCH_END - premature end of pattern string X* MATCH_VALID - valid match X* X* X* A match means the entire string TEXT is used up in matching. X* X* In the pattern string: X* `60*' matches any sequence of characters (zero or more) X* `60?' matches any character X* `5BSET`5D matches any character in the specified set, X* `5B!SET`5D or `5B`5ESET`5D matches any character not in the specifie Vd set. X* \ is allowed within a set to escape a character like '`5D' or '-' X* X* A set is composed of characters or ranges; a range looks like X* character hyphen character (as in 0-9 or A-Z). `5B0-9a-zA-Z_`5D is the X* minimal set of characters allowed in the `5B..`5D pattern construct. X* Other characters are allowed (ie. 8 bit characters) if your system X* will support them. X* X* To suppress the special syntactic significance of any of `60`5B`5D*?!`5E- V\', X* within a `5B..`5D construct and match the character exactly, precede it X* with a `60\'. X* X---------------------------------------------------------------------------- V*/ X Xstatic int matche(p, t) Xregister char *p; Xregister char *t; X`7B X register char range_start, range_end; /* start and end in range */ X X BOOLEAN invert; /* is this `5B..`5D or `5B!..`5D */ X BOOLEAN member_match; /* have I matched the `5B..`5D construct? */ X BOOLEAN loop; /* should I terminate? */ X X for (; *p; p++, t++) `7B X X /* if this is the end of the text then this is the end of the match V */ X if (!*t) X return ((*p == '*') && (*++p == '\0'))? MATCH_VALID : MATCH_ABO VRT; X X /* determine and react to pattern type */ X switch (*p) `7B X X /* single any character match */ X case '?': X break; X X /* multiple any character match */ X case '*': X return matche_after_star (p, t); X X /* `5B..`5D construct, single member/exclusion character match * V/ X case '`5B': `7B X X /* move to beginning of range */ X p++; X X /* check if this is a member match or exclusion match */ X invert = FALSE; X if ((*p == '!') `7C`7C (*p == '`5E')) `7B X invert = TRUE; X p++; X `7D X X /* if closing bracket here or at range start then we have a X malformed pattern */ X if (*p == '`5D') X return MATCH_PATTERN; X X member_match = FALSE; X loop = TRUE; X X while (loop) `7B X X /* if end of construct then loop is done */ X if (*p == '`5D') `7B X loop = FALSE; X continue; X `7D X X /* matching a '!', '`5E', '-', '\' or a '`5D' */ X if (*p == '\\') X range_start = range_end = *++p; X else X range_start = range_end = *p; X X /* if end of pattern then bad pattern (Missing '`5D') */ X if (!*p) X return MATCH_PATTERN; X X /* check for range bar */ X if (*++p == '-') `7B X X /* get the range end */ X range_end = *++p; X X /* if end of pattern or construct then bad pattern * V/ X if ((range_end == '\0') `7C`7C (range_end == '`5D')) X return MATCH_PATTERN; X X /* special character range end */ X if (range_end == '\\') `7B X range_end = *++p; X X /* if end of text then we have a bad pattern */ X if (!range_end) X return MATCH_PATTERN; X `7D X X /* move just beyond this range */ X p++; X `7D X X /* if the text character is in range then match found. X * make sure the range letters have the proper X * relationship to one another before comparison X */ X if (range_start < range_end) `7B X if ((*t >= range_start) && (*t <= range_end)) `7B X member_match = TRUE; X loop = FALSE; X `7D X `7D else `7B X if ((*t >= range_end) && (*t <= range_start)) `7B X member_match = TRUE; X loop = FALSE; X `7D X `7D X `7D X X /* if there was a match in an exclusion set then no match */ X /* if there was no match in a member set then no match */ X if ((invert && member_match) `7C`7C X !(invert `7C`7C member_match)) X return MATCH_RANGE; X X /* if this is not an exclusion then skip the rest of the `5B V...`5D X construct that already matched. */ X if (member_match) `7B X while (*p != '`5D') `7B X X /* bad pattern (Missing '`5D') */ X if (!*p) X return MATCH_PATTERN; X X /* skip exact match */ X if (*p == '\\') `7B X p++; X X /* if end of text then we have a bad pattern */ X if (!*p) X return MATCH_PATTERN; X `7D X X /* move to next pattern char */ X p++; X `7D X `7D X X break; X `7D /* switch '`5B' */ X X /* must match this character exactly */ X default: X#ifdef OLDSTUFF X if (*p != *t) X#else /* !OLDSTUFF */ X /* do it like arcmatch() (old unzip) did it (v1.2) */ X if (*t != (char) ((pInfo->lcflag && isupper((int)(*p)))? X tolower((int)(*p)) : *p)) X#endif /* ?OLDSTUFF */ X return MATCH_LITERAL; X X `7D /* switch */ X `7D /* for */ X X /* if end of text not reached then the pattern fails */ X if (*t) X return MATCH_END; X else X return MATCH_VALID; X`7D X X X/*-------------------------------------------------------------------------- V-- X* X* recursively call matche() with final segment of PATTERN and of TEXT. X* X---------------------------------------------------------------------------- V*/ X Xstatic int matche_after_star (p,t) Xregister char *p; Xregister char *t; X`7B X register int match = 0; X register int nextp; X X /* pass over existing ? and * in pattern */ X while ((*p == '?') `7C`7C (*p == '*')) `7B X X /* take one char for each ? and +; if end of text then no match */ X if ((*p == '?') && (!*t++)) X return MATCH_ABORT; X X /* move to next char in pattern */ X p++; X `7D X X /* if end of pattern we have matched regardless of text left */ X if (!*p) X return MATCH_VALID; X X /* get the next character to match which must be a literal or '`5B' */ X nextp = *p; X X /* Continue until we run out of text or definite result seen */ X do `7B X /* a precondition for matching is that the next character X * in the pattern match the next character in the text or that X * the next pattern char is the beginning of a range. Increment X * text pointer as we go here. X */ X if ((nextp == *t) `7C`7C (nextp == '`5B')) X match = matche(p, t); X X /* if the end of text is reached then no match */ X if (!*t++) X match = MATCH_ABORT; X X `7D while ((match != MATCH_VALID) && X (match != MATCH_ABORT) && X (match != MATCH_PATTERN)); X X /* return result */ X return match; X`7D X X X/*-------------------------------------------------------------------------- V-- X* X* match() is a shell to matche() to return only BOOLEAN values. X* X---------------------------------------------------------------------------- V*/ X Xint match(string,pattern) Xchar *string; Xchar *pattern; X`7B X int error_type; X error_type = matche(pattern,string); X return (error_type == MATCH_VALID ) ? TRUE : FALSE; X`7D X X X#ifdef TEST_MATCH X X/*-------------------------------------------------------------------------- V-- X* X* Return TRUE if PATTERN has any special wildcard characters X* X---------------------------------------------------------------------------- V*/ X XBOOLEAN is_pattern (char *pattern); X X/*-------------------------------------------------------------------------- V-- X* X* Return TRUE if PATTERN has is a well formed regular expression according X* to the above syntax X* X* error_type is a return code based on the type of pattern error. Zero is X* returned in error_type if the pattern is a valid one. error_type return X* values are as follows: X* X* PATTERN_VALID - pattern is well formed X* PATTERN_RANGE - `5B..`5D construct has a no end range in a '-' pair (ie V `5Ba-`5D) X* PATTERN_CLOSE - `5B..`5D construct has no end bracket (ie `5Babc-g ) X* PATTERN_EMPTY - `5B..`5D construct is empty (ie `5B`5D) X* X---------------------------------------------------------------------------- V*/ X XBOOLEAN is_valid_pattern (char *pattern, int *error_type); Xint fast_match_after_star (register char *pattern, register char *text); X X/*-------------------------------------------------------------------------- V-- X* X* Return TRUE if PATTERN has any special wildcard characters X* X---------------------------------------------------------------------------- V*/ X XBOOLEAN is_pattern (char *p) X`7B X while (*p) X switch (*p++) `7B X case '?': X case '*': X case '`5B': X return TRUE; X `7D X return FALSE; X`7D X X X/*-------------------------------------------------------------------------- V-- X* X* Return TRUE if PATTERN has is a well formed regular expression according X* to the above syntax X* X* error_type is a return code based on the type of pattern error. Zero is X* returned in error_type if the pattern is a valid one. error_type return X* values are as follows: X* X* PATTERN_VALID - pattern is well formed X* PATTERN_RANGE - `5B..`5D construct has a no end range in a '-' pair (ie V `5Ba-`5D) X* PATTERN_CLOSE - `5B..`5D construct has no end bracket (ie `5Babc-g ) X* PATTERN_EMPTY - `5B..`5D construct is empty (ie `5B`5D) X* X---------------------------------------------------------------------------- V*/ X XBOOLEAN is_valid_pattern (char *p, int *error_type) X`7B X /* init error_type */ X *error_type = PATTERN_VALID; X X /* loop through pattern to EOS */ X while (*p) `7B X X /* determine pattern type */ X switch (*p) `7B X X /* the `5B..`5D construct must be well formed */ X case '`5B': X p++; X X /* if the next character is '`5D' then bad pattern */ X if (*p == '`5D') `7B X *error_type = PATTERN_EMPTY; X return FALSE; X `7D X X /* if end of pattern here then bad pattern */ X if (!*p) `7B X *error_type = PATTERN_CLOSE; X return FALSE; X `7D X X /* loop to end of `5B..`5D construct */ X while (*p != '`5D') `7B X X /* check for literal escape */ X if (*p == '\\') `7B X p++; X X /* if end of pattern here then bad pattern */ X if (!*p++) `7B X *error_type = PATTERN_ESC; X return FALSE; X `7D X `7D else X p++; X X /* if end of pattern here then bad pattern */ X if (!*p) `7B X *error_type = PATTERN_CLOSE; X return FALSE; X `7D X X /* if this a range */ X if (*p == '-') `7B X X /* we must have an end of range */ X if (!*++p `7C`7C (*p == '`5D')) `7B X *error_type = PATTERN_RANGE; X return FALSE; X `7D else `7B X X /* check for literal escape */ X if (*p == '\\') X p++; X X /* if end of pattern here then bad pattern */ X if (!*p++) `7B X *error_type = PATTERN_ESC; X return FALSE; X `7D X `7D X `7D X `7D X break; X X /* all other characters are valid pattern elements */ X case '*': X case '?': X default: X p++; /* "normal" character */ X break; X `7D /* switch */ X `7D X X return TRUE; X`7D X X X /* X * This test main expects as first arg the pattern and as second arg X * the match string. Output is yay or nay on match. If nay on X * match then the error code is parsed and written. X */ X X#include <stdio.h> X Xint main(int argc, char *argv`5B`5D) X`7B X int error; X int is_valid_error; X X if (argc != 3) X printf("Usage: MATCH Pattern Text\n"); X else `7B X printf("Pattern: %s\n", argv`5B1`5D); X printf("Text : %s\n", argv`5B2`5D); X X if (!is_pattern(argv`5B1`5D)) X printf(" First Argument Is Not A Pattern\n"); X else `7B X match(argv`5B1`5D,argv`5B2`5D) ? printf("TRUE") : printf("FALSE" V); X error = matche(argv`5B1`5D,argv`5B2`5D); X is_valid_pattern(argv`5B1`5D,&is_valid_error); X X switch (error) `7B X case MATCH_VALID: X printf(" Match Successful"); X if (is_valid_error != PATTERN_VALID) X printf(" -- is_valid_pattern() is complaining\n"); X else X printf("\n"); X break; X case MATCH_RANGE: X printf(" Match Failed on `5B..`5D\n"); X break; X case MATCH_ABORT: X printf(" Match Failed on Early Text Termination\n"); X break; X case MATCH_END: X printf(" Match Failed on Early Pattern Termination\n" V); X break; X case MATCH_PATTERN: X switch (is_valid_error) `7B X case PATTERN_VALID: X printf(" Internal Disagreement On Pattern\n") V; X break; X case PATTERN_RANGE: X printf(" No End of Range in `5B..`5D Construc Vt\n"); X break; X case PATTERN_CLOSE: X printf(" `5B..`5D Construct is Open\n"); X break; X case PATTERN_EMPTY: X printf(" `5B..`5D Construct is Empty\n"); X break; X default: X printf(" Internal Error in is_valid_pattern() V\n"); X `7D X break; X default: X printf(" Internal Error in matche()\n"); X break; X `7D /* switch */ X `7D X X `7D X return(0); X`7D X X#endif /* TEST_MATCH */ $ CALL UNPACK [.UNZIP50]MATCH.C;1 119022413 $ create 'f' X/*-------------------------------------------------------------------------- V- X X misc.c X X This file contains a number of useful but not particularly closely related X functions; their main claim to fame is that they don't change much, so thi Vs X file should rarely need to be recompiled. The CRC-32 stuff is from crc32. Vc; X do_string() is from nunzip.c; makeword() and makelong() are from unzip.c; X memset() and memcpy() are from zmemset.c and zmemcpy.c, respectively; and X dos_to_unix_time() is from set_file_time_and_close() in file_io.c. ebcdic V`5B`5D, X check_for_newer(), dateformat(), and return_VMS() are new. Things lumped X together here to cut down on the size of unzip.c and the number of associ- X ated files floating around. X X -------------------------------------------------------------------------- V- X X Copyrights: see accompanying file "COPYING" in UnZip source distribution. X X -------------------------------------------------------------------------- V-*/ X X X#include "unzip.h" X#ifdef MSWIN X# include "wizunzip.h" X#endif X X X X#ifndef ZIPINFO /* no need to calculate CRCs */ X X/**************************/ X/* Function UpdateCRC() */ X/**************************/ X X /*-------------------------------------------------------------------- X X First, the polynomial itself and its table of feedback terms. The X polynomial is X X`5E32+X`5E26+X`5E23+X`5E22+X`5E16+X`5E12+X`5E11+X`5E10+X`5E8+X`5E7+X`5E5 V+X`5E4+X`5E2+X`5E1+X`5E0 X X Note that we take it "backwards" and put the highest-order term in X the lowest-order bit. The X`5E32 term is "implied"; the LSB is the X X`5E31 term, etc. The X`5E0 term (usually shown as "+1") results in X the MSB being 1. X X Note that the usual hardware shift register implementation, which X is what we're using (we're merely optimizing it by doing eight-bit X chunks at a time) shifts bits into the lowest-order term. In our X implementation, that means shifting towards the right. Why do we X do it this way? Because the calculated CRC must be transmitted in X order from highest-order term to lowest-order term. UARTs transmit X characters in order from LSB to MSB. By storing the CRC this way, X we hand it to the UART in the order low-byte to high-byte; the UART X sends each low-bit to hight-bit; and the result is transmission bit X by bit from highest- to lowest-order term without requiring any bit X shuffling on our part. Reception works similarly. X X The feedback terms table consists of 256, 32-bit entries. Notes: X X The table can be generated at runtime if desired; code to do so X is shown later. It might not be obvious, but the feedback X terms simply represent the results of eight shift/xor opera- X tions for all combinations of data and CRC register values. X X The values must be right-shifted by eight bits by the "updcrc" X logic; the shift must be unsigned (bring in zeroes). On some X hardware you could probably optimize the shift in assembler by X using byte-swap instructions. X polynomial $edb88320 X X --------------------------------------------------------------------*/ X XULONG crc_32_tab`5B`5D = X`7B X 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, X 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, X 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, X 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, X 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, X 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, X 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, X 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, X 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, X 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, X 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, X 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, X 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, X 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, X 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, X 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, X 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, X 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, X 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, X 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, X 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, X 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, X 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, X 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, X 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, X 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, X 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, X 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, X 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, X 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, X 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, X 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, X 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, X 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, X 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, X 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, X 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, X 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, X 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, X 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, X 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, X 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, X 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, X 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, X 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, X 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, X 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, X 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, X 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, X 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, X 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, X 0x2d02ef8dL X`7D; /* end crc_32_tab`5B`5D */ X X Xvoid UpdateCRC(s, len) X register byte *s; X register int len; X`7B X register ULONG crcval = crc32val; X X /* update running CRC calculation with contents of a buffer */ X while (len--) X crcval = crc_32_tab`5B((byte) crcval `5E (*s++)) & 0xff`5D `5E (crcv Val >> 8); X crc32val = crcval; X`7D X X#endif /* !ZIPINFO */ X X X X X X/**************************/ X/* Function do_string() */ X/**************************/ X Xint do_string(len, option) /* return PK-type error code */ X unsigned int len; /* without prototype, UWORD converted to thi Vs */ X int option; X`7B X int block_length, error = 0; X UWORD comment_bytes_left, extra_len; X X X/*-------------------------------------------------------------------------- V- X This function processes arbitrary-length (well, usually) strings. Three X options are allowed: SKIP, wherein the string is skipped pretty logical V, X eh?); DISPLAY, wherein the string is printed to standard output after un V- X dergoing any necessary or unnecessary character conversions; and FILENAM VE, X wherein the string is put into the filename`5B`5D array after undergoing V ap- X propriate conversions (including case-conversion, if that is indicated: X see the global variable pInfo->lcflag). The latter option should be OK, X since filename is now dimensioned at 1025, but we check anyway. X X The string, by the way, is assumed to start at the current file-pointer X position; its length is given by len. So start off by checking length X of string: if zero, we're already set. X -------------------------------------------------------------------------- V-*/ X X if (!len) X return (0); /* 0: no error */ X X switch (option) `7B X X /* X * First case: print string on standard output. First set loop vari- X * ables, then loop through the comment in chunks of OUTBUFSIZ bytes, X * converting formats and printing as we go. The second half of the X * loop conditional was added because the file might be truncated, in X * which case comment_bytes_left will remain at some non-zero value for X * all time. outbuf is used as a scratch buffer because it is avail- X * able (we should be either before or in between any file processing). X * `5BThe typecast in front of the MIN() macro was added because of the X * new promotion rules under ANSI C; readbuf() wants an int, but MIN() X * returns a signed long, if I understand things correctly. The proto- X * type should handle it, but just in case...`5D X */ X X case DISPLAY: X comment_bytes_left = len; X block_length = OUTBUFSIZ; /* for the while statement, first time V */ X while (comment_bytes_left > 0 && block_length > 0) `7B X if ((block_length = readbuf((char *)outbuf, X (int) MIN(OUTBUFSIZ, comment_bytes_left))) <= 0) X return 51; /* 51: unexpected EOF */ X comment_bytes_left -= block_length; X NUKE_CRs(outbuf, block_length); /* (modifies block_length) * V/ X X /* this is why we allocated an extra byte for outbuf: */ X outbuf`5Bblock_length`5D = '\0'; /* terminate w/zero: AS VCIIZ */ X X A_TO_N(outbuf); /* translate string to native */ X X printf("%s", outbuf); X `7D X#ifdef MSWIN X /* ran out of local mem -- had to cheat */ X WriteStringToMsgWin(outbuf, bRealTimeMsgUpdate); X#else /* !MSWIN */ X printf("\n"); /* assume no newline at end */ X#endif /* ?MSWIN */ X break; X X /* X * Second case: read string into filename`5B`5D array. The filename sh Vould X * never ever be longer than FILNAMSIZ-1 (1024), but for now we'll check V, X * just to be sure. X */ X X case FILENAME: X extra_len = 0; X if (len >= FILNAMSIZ) `7B X fprintf(stderr, "warning: filename too long--truncating.\n"); X error = 1; /* 1: warning error */ X extra_len = len - FILNAMSIZ + 1; X len = FILNAMSIZ - 1; X `7D X if (readbuf(filename, len) <= 0) X return 51; /* 51: unexpected EOF */ X filename`5Blen`5D = '\0'; /* terminate w/zero: ASCIIZ */ X X A_TO_N(filename); /* translate string to native */ X X#ifndef ZIPINFO X if (pInfo->lcflag) X TOLOWER(filename, filename); /* replace with lowercase filename V */ X#endif X X if (!extra_len) /* we're done here */ X break; X X /* X * We truncated the filename, so print what's left and then fall X * through to the SKIP routine. X */ X fprintf(stderr, "`5B %s `5D\n", filename); X len = extra_len; X /* FALL THROUGH... */ X X /* X * Third case: skip string, adjusting readbuf's internal variables X * as necessary (and possibly skipping to and reading a new block of X * data). X */ X X case SKIP: X LSEEK(cur_zipfile_bufstart + (inptr-inbuf) + len) X break; X X /* X * Fourth case: assume we're at the start of an "extra field"; malloc X * storage for it and read data into the allocated space. X */ X X case EXTRA_FIELD: X if (extra_field != (byte *)NULL) X free(extra_field); X if ((extra_field = (byte *)malloc(len)) == (byte *)NULL) `7B X fprintf(stderr, X "warning: extra field too long (%d). Ignoring...\n", len); X LSEEK(cur_zipfile_bufstart + (inptr-inbuf) + len) X `7D else X if (readbuf((char *)extra_field, len) <= 0) X return 51; /* 51: unexpected EOF */ X break; X X `7D /* end switch (option) */ X return error; X X`7D /* end function do_string() */ X X X X X X#ifndef ZIPINFO X#ifndef VMS X X/*********************************/ X/* Function dos_to_unix_time() */ X/*********************************/ X Xtime_t dos_to_unix_time(ddate, dtime) X unsigned ddate, dtime; X`7B X static short yday`5B`5D=`7B0, 31, 59, 90, 120, 151, 181, 212, 243, 273, V 304, 334`7D; X int yr, mo, dy, hh, mm, ss, leap; X long m_time, days=0; X#if (!defined(MACOS) && !defined(MSC) && !defined(__GO32__)) X#if (defined(BSD) `7C`7C defined(MTS)) X#ifndef __386BSD__ X static struct timeb tbp; X#endif /* __386BSD__ */ X#else /* !(BSD `7C`7C MTS) */ X extern long timezone; /* declared in <time.h> for MSC (& Borland?) */ X#endif /* ?(BSD `7C`7C MTS) */ X#endif /* !MACOS && !MSC && !__GO32__ */ X X# define YRBASE 1970 X X /* dissect date */ X yr = ((ddate >> 9) & 0x7f) + (1980 - YRBASE); X mo = ((ddate >> 5) & 0x0f) - 1; X dy = (ddate & 0x1f) - 1; X X /* dissect time */ X hh = (dtime >> 11) & 0x1f; X mm = (dtime >> 5) & 0x3f; X ss = (dtime & 0x1f) * 2; X X /* leap = # of leap years from BASE up to but not including current year V */ X leap = ((yr + YRBASE - 1) / 4); /* leap year base factor */ X X /* How many days from BASE to this year? (& add expired days this year) V */ X days = (yr * 365) + (leap - 492) + yday`5Bmo`5D; X X /* if year is a leap year and month is after February, add another day * V/ X if ((mo > 1) && ((yr+YRBASE)%4 == 0) && ((yr+YRBASE) != 2100)) X ++days; /* OK through 2199 */ X X /* convert date & time to seconds relative to 00:00:00, 01/01/YRBASE */ X m_time = ((long)(days + dy) * 86400L) + ((long)hh * 3600) + (mm * 60) + V ss; X /* - 1; MS-DOS times always rounded up to nearest even second */ X X#if (!defined(MACOS) && !defined(__GO32__)) X#if (defined(BSD) `7C`7C defined(MTS)) X#ifndef __386BSD__ X ftime(&tbp); X m_time += tbp.timezone * 60L; X#endif X#else /* !(BSD `7C`7C MTS) */ X#ifdef WIN32 X /* later... */ X#else /* !WIN32 */ X tzset(); /* set `60timezone' */ X#endif /* ?WIN32 */ X m_time += timezone; /* account for timezone differences */ X#endif /* ?(BSD `7C`7C MTS) */ X#endif /* !MACOS && !__GO32__ */ X X#ifdef __386BSD__ X m_time += localtime((time_t *) &m_time))->tm_gmtoff; X#else X if (localtime((time_t *)&m_time)->tm_isdst) X m_time -= 60L * 60L; /* adjust for daylight savings time */ X#endif /* __386BSD__ */ X X return m_time; X X`7D /* end function dos_to_unix_time() */ X X#endif /* !VMS */ X X X X X X/********************************/ X/* Function check_for_newer() */ /* could make this into a macro for Unix V */ X/********************************/ X Xint check_for_newer(filename) /* return 1 if existing file newer or equal; V */ X char *filename; /* 0 if older; -1 if doesn't exist yet */ X`7B X#ifdef VMS X unsigned short timbuf`5B7`5D; X int dy, mo, yr, hh, mm, ss, dy2, mo2, yr2, hh2, mm2, ss2; X struct FAB fab; X struct XABDAT xdat; X X X if (stat(filename, &statbuf)) X return DOES_NOT_EXIST; X X fab = cc$rms_fab; X xdat = cc$rms_xabdat; X X fab.fab$l_xab = &xdat; X fab.fab$l_fna = filename; X fab.fab$b_fns = strlen(filename); X fab.fab$l_fop = FAB$M_GET `7C FAB$M_UFO; X X if ((sys$open(&fab) & 1) == 0) /* open failure: report exists and V */ X return EXISTS_AND_OLDER; /* older so new copy will be made V */ X sys$numtim(&timbuf,&xdat.xab$q_cdt); X fab.fab$l_xab = 0L; X X sys$dassgn(fab.fab$l_stv); X sys$close(&fab); /* be sure file is closed and RMS knows about it */ X X yr = timbuf`5B0`5D; X yr2 = ((lrec.last_mod_file_date >> 9) & 0x7f) + 1980; X if (yr > yr2) X return EXISTS_AND_NEWER; X else if (yr < yr2) X return EXISTS_AND_OLDER; X X mo = timbuf`5B1`5D; X mo2 = ((lrec.last_mod_file_date >> 5) & 0x0f); X if (mo > mo2) X return EXISTS_AND_NEWER; X else if (mo < mo2) X return EXISTS_AND_OLDER; X X dy = timbuf`5B2`5D; X dy2 = (lrec.last_mod_file_date & 0x1f); X if (dy > dy2) X return EXISTS_AND_NEWER; X else if (dy < dy2) X return EXISTS_AND_OLDER; X X hh = timbuf`5B3`5D; X hh2 = (lrec.last_mod_file_time >> 11) & 0x1f; X if (hh > hh2) X return EXISTS_AND_NEWER; X else if (hh < hh2) X return EXISTS_AND_OLDER; X X mm = timbuf`5B4`5D; X mm2 = (lrec.last_mod_file_time >> 5) & 0x3f; X if (mm > mm2) X return EXISTS_AND_NEWER; X else if (mm < mm2) X return EXISTS_AND_OLDER; X X /* round to nearest 2 secs--may become 60, but doesn't matter for compar Ve */ X ss = (int)((float)timbuf`5B5`5D + (float)timbuf`5B6`5D*.01 + 1.) & -2; X ss2 = (lrec.last_mod_file_time & 0x1f) * 2; X if (ss >= ss2) X return EXISTS_AND_NEWER; X X return EXISTS_AND_OLDER; X X#else /* !VMS */ X#ifdef OS2 X long existing, archive; X X if ((existing = GetFileTime(filename)) == -1) X return DOES_NOT_EXIST; X archive = ((long) lrec.last_mod_file_date) << 16 `7C lrec.last_mod_file_ Vtime; X X return (existing >= archive); X#else /* !OS2 */ X time_t existing, archive; X X if (stat(filename, &statbuf)) X return DOES_NOT_EXIST; X X /* round up existing filetime to nearest 2 seconds for comparison */ X existing = (statbuf.st_mtime & 1) ? statbuf.st_mtime+1 : statbuf.st_mtim Ve; X archive = dos_to_unix_time(lrec.last_mod_file_date, X lrec.last_mod_file_time); X X return (existing >= archive); X#endif /* ?OS2 */ X#endif /* ?VMS */ X X`7D /* end function check_for_newer() */ X X X X X X/***************************/ X/* Function dateformat() */ X/***************************/ X Xint dateformat() X`7B X X/*-------------------------------------------------------------------------- V--- X For those operating systems which support it, this function returns a valu Ve X which tells how national convention says that numeric dates are displayed. X X Return values are DF_YMD, DF_DMY and DF_MDY. The meanings should be fairl Vy X obvious. X --------------------------------------------------------------------------- V--*/ X X#ifdef OS2 X switch (GetCountryInfo()) `7B X case 0 /* DATEFMT_MM_DD_YY */ : X return DF_MDY; X case 1 /* DATEFMT_DD_MM_YY */ : X return DF_DMY; X case 2 /* DATEFMT_YY_MM_DD */ : X return DF_YMD; X `7D X#else /* !OS2 */ X#if (defined(MSDOS) && !defined(MSWIN)) X unsigned short _CountryInfo`5B18`5D; X#ifdef __GO32__ X unsigned short *CountryInfo = _CountryInfo; X X bdos(0x38, (unsigned)CountryInfo, 0); X#else /* !__GO32__ */ X unsigned short far *CountryInfo = _CountryInfo; X union REGS regs; X struct SREGS sregs; X X regs.x.ax = 0x3800; X regs.x.dx = FP_OFF(CountryInfo); X sregs.ds = FP_SEG(CountryInfo); X int86x(0x21, ®s, ®s, &sregs); X#endif /* ?__GO32__ */ X X switch(CountryInfo`5B0`5D) `7B X case 0: X return DF_MDY; X case 1: X return DF_DMY; X case 2: X return DF_YMD; X `7D X#endif /* MSDOS && !MSWIN */ X#endif /* ?OS2 */ X X return DF_MDY; /* default for Unix, VMS, etc. */ X X`7D /* end function dateformat() */ X X#endif /* !ZIPINFO */ X X X X X X#ifdef EBCDIC X X/* X * This is the MTS ASCII->EBCDIC translation table. It provides a 1-1 X * translation from ISO 8859/1 8-bit ASCII to IBM Code Page 37 EBCDIC. X */ X Xunsigned char ebcdic`5B`5D = X`7B X 0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f, X 0x16, 0x05, 0x25, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, X 0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26, X 0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f, X 0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d, X 0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61, X 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, X 0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f, X 0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, X 0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, X 0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, X 0xe7, 0xe8, 0xe9, 0xba, 0xe0, 0xbb, 0xb0, 0x6d, X 0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, X 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, X 0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, X 0xa7, 0xa8, 0xa9, 0xc0, 0x4f, 0xd0, 0xa1, 0x07, X 0x20, 0x21, 0x22, 0x23, 0x24, 0x15, 0x06, 0x17, X 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x09, 0x0a, 0x1b, X 0x30, 0x31, 0x1a, 0x33, 0x34, 0x35, 0x36, 0x08, X 0x38, 0x39, 0x3a, 0x3b, 0x04, 0x14, 0x3e, 0xff, X 0x41, 0xaa, 0x4a, 0xb1, 0x9f, 0xb2, 0x6a, 0xb5, X 0xbd, 0xb4, 0x9a, 0x8a, 0x5f, 0xca, 0xaf, 0xbc, X 0x90, 0x8f, 0xea, 0xfa, 0xbe, 0xa0, 0xb6, 0xb3, X 0x9d, 0xda, 0x9b, 0x8b, 0xb7, 0xb8, 0xb9, 0xab, X 0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9e, 0x68, X 0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77, X 0xac, 0x69, 0xed, 0xee, 0xeb, 0xef, 0xec, 0xbf, X 0x80, 0xfd, 0xfe, 0xfb, 0xfc, 0xad, 0xae, 0x59, X 0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9c, 0x48, X 0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57, X 0x8c, 0x49, 0xcd, 0xce, 0xcb, 0xcf, 0xcc, 0xe1, X 0x70, 0xdd, 0xde, 0xdb, 0xdc, 0x8d, 0x8e, 0xdf X`7D; /* end ebcdic`5B`5D */ X X#endif /* EBCDIC */ X X X X X X/*************************/ X/* Function makeword() */ X/*************************/ X XUWORD makeword(b) X byte *b; X`7B X /* X * Convert Intel style 'short' integer to non-Intel non-16-bit X * host format. This routine also takes care of byte-ordering. X */ X return ((b`5B1`5D << 8) `7C b`5B0`5D); X`7D X X X X X X/*************************/ X/* Function makelong() */ X/*************************/ X XULONG makelong(sig) X byte *sig; X`7B X /* X * Convert intel style 'long' variable to non-Intel non-16-bit X * host format. This routine also takes care of byte-ordering. X */ X return (((ULONG) sig`5B3`5D) << 24) X + (((ULONG) sig`5B2`5D) << 16) X + (((ULONG) sig`5B1`5D) << 8) X + ((ULONG) sig`5B0`5D); X`7D X X X X X X#ifdef VMS X X/***************************/ X/* Function return_VMS() */ X/***************************/ X Xvoid return_VMS(zip_error) X int zip_error; X`7B X#ifdef RETURN_CODES X/*-------------------------------------------------------------------------- V- X Do our own, explicit processing of error codes and print message, since X VMS misinterprets return codes as rather obnoxious system errors ("acces Vs X violation," for example). X -------------------------------------------------------------------------- V-*/ X X switch (zip_error) `7B X X case 0: X break; /* life is fine... */ X case 1: X fprintf(stderr, "\n`5Breturn-code 1: warning error \ X(e.g., failed CRC or unknown compression method)`5D\n"); X break; X case 2: X case 3: X fprintf(stderr, "\n`5Breturn-code %d: error in zipfile \ X(e.g., can't find local file header sig)`5D\n", X zip_error); X break; X case 4: X case 5: X case 6: X case 7: X case 8: X fprintf(stderr, "\n`5Breturn-code %d: insufficient memory`5D\n", X zip_error); X break; +-+-+-+-+-+-+-+- END OF PART 6 +-+-+-+-+-+-+-+-