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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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unzip51.zip
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AMIGA
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AMIGA.C
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1994-01-08
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682 lines
/*------------------------------------------------------------------------
amiga.c
Amiga-specific routines for use with Info-ZIP's UnZip 5.1 and later.
Contents: mapattr()
mapname()
do_wild()
checkdir()
cmptime()
invlocal()
close_outfile()
History:
Sep ?? 1992: Greg Roelofs, original coding (I did??).
Oct 30 1992: John Bush, merged FileDate() code with Zip 1.9h.
Incorporated Zip's invlocal() routine and omitted
intermediate redundant date format changes.
Feb 6, 1993: Separated filedate.c so it could be loaded in Zip too.
Jul 11 1993: Added 5.1e routines required.
Nov 1, 1993: Compatibilized to 5.1h (JB)
------------------------------------------------------------------------*/
#include "unzip.h"
/* Globular varibundus */
static int created_dir; /* used in mapname(), checkdir() */
static int renamed_fullpath; /* ditto */
#define PERMS 0777
#define MKDIR(path,mode) mkdir(path)
#ifndef S_ISCRIPT /* not having one implies you have none */
# define S_IARCHIVE 0020 /* not modified since this bit was last set */
# define S_IREAD 0010 /* can be opened for reading */
# define S_IWRITE 0004 /* can be opened for writing */
# define S_IDELETE 0001 /* can be deleted */
#endif /* S_ISCRIPT */
#ifndef S_IRWD
# define S_IRWD 0015 /* useful combo of Amiga privileges */
#endif /* !S_IRWD */
#ifndef S_IHIDDEN
# define S_IHIDDEN 0200 /* hidden supported in future AmigaDOS 3.x */
#endif /* !S_HIDDEN */
/**********************/
/* Function mapattr() */
/**********************/
int mapattr(void) /* Amiga version */
{
ulg tmp = crec.external_file_attributes;
/* Amiga attributes = hsparwed = hidden, script, pure, archive,
* read, write, execute, delete */
switch (pInfo->hostnum) {
case AMIGA_:
if ((tmp & 1) == (tmp>>18 & 1))
tmp ^= 0x000F0000; /* PKAZip compatibility kluge */
/* turn off archive bit for restored Amiga files */
pInfo->file_attr = (unsigned)((tmp>>16) & (~S_IARCHIVE));
break;
case UNIX_: /* preserve read, write, execute: use logical-OR of */
case VMS_: /* user, group, and other; if writable, set delete bit */
tmp >>= 16;
tmp = (( tmp>>6 | tmp>>3 | tmp) & 07) << 1;
pInfo->file_attr = (unsigned)(tmp&S_IWRITE? tmp|S_IDELETE : tmp);
break;
/* all other platforms: assume read-only bit in DOS half of attribute
* word is set correctly ==> will become READ or READ+WRITE+DELETE */
case FS_FAT_:
case FS_HPFS_: /* can add S_IHIDDEN check to MSDOS/OS2/NT eventually */
case FS_NTFS_:
case MAC_:
case ATARI_:
case TOPS20_:
default:
pInfo->file_attr = (unsigned)(tmp&1? S_IREAD : S_IRWD);
break;
} /* end switch (host-OS-created-by) */
pInfo->file_attr &= 0xff; /* mask off all but lower eight bits */
return 0;
} /* end function mapattr() */
/************************/
/* Function mapname() */
/************************/
int mapname(renamed) /* return 0 if no error, 1 if caution (filename trunc), */
int renamed; /* 2 if warning (skip file because dir doesn't exist), */
{ /* 3 if error (skip file), 10 if no memory (skip file) */
char pathcomp[FILNAMSIZ]; /* path-component buffer */
char *pp, *cp=NULL; /* character pointers */
char *lastsemi = NULL; /* pointer to last semi-colon in pathcomp */
int quote = FALSE; /* flags */
int error = 0;
register unsigned workch; /* hold the character being tested */
/*---------------------------------------------------------------------------
Initialize various pointers and counters and stuff.
---------------------------------------------------------------------------*/
/* can create path as long as not just freshening, or if user told us */
create_dirs = (!fflag || renamed);
created_dir = FALSE; /* not yet */
/* user gave full pathname: don't prepend rootpath */
renamed_fullpath = (renamed && strchr(filename, ':'));
if (checkdir((char *)NULL, INIT) == 10)
return 10; /* initialize path buffer, unless no memory */
*pathcomp = '\0'; /* initialize translation buffer */
pp = pathcomp; /* point to translation buffer */
if (jflag) /* junking directories */
cp = (char *)strrchr(filename, '/');
if (cp == NULL) /* no '/' or not junking dirs */
cp = filename; /* point to internal zipfile-member pathname */
else
++cp; /* point to start of last component of path */
/*---------------------------------------------------------------------------
Begin main loop through characters in filename.
---------------------------------------------------------------------------*/
while ((workch = (uch)*cp++) != 0) {
if (quote) { /* if character quoted, */
*pp++ = (char)workch; /* include it literally */
quote = FALSE;
} else
switch (workch) {
case '/': /* can assume -j flag not given */
*pp = '\0';
if ((error = checkdir(pathcomp, APPEND_DIR)) > 1)
return error;
pp = pathcomp; /* reset conversion buffer for next piece */
lastsemi = NULL; /* leave directory semi-colons alone */
break;
case ';': /* VMS version (or DEC-20 attrib?) */
lastsemi = pp; /* keep for now; remove VMS ";##" */
*pp++ = (char)workch; /* later, if requested */
break;
case '\026': /* control-V quote for special chars */
quote = TRUE; /* set flag for next character */
break;
default:
/* allow European characters in filenames: */
if (isprint(workch) || (128 <= workch && workch <= 255))
*pp++ = (char)workch;
} /* end switch */
} /* end while loop */
*pp = '\0'; /* done with pathcomp: terminate it */
/* if not saving them, remove with VMS version numbers (appended ";###") */
if (!V_flag && lastsemi) {
pp = lastsemi + 1;
while (isdigit((uch)(*pp)))
++pp;
if (*pp == '\0') /* only digits between ';' and end: nuke */
*lastsemi = '\0';
}
/*---------------------------------------------------------------------------
Report if directory was created (and no file to create: filename ended
in '/'), check name to be sure it exists, and combine path and name be-
fore exiting.
---------------------------------------------------------------------------*/
if (filename[strlen(filename) - 1] == '/') {
if (checkdir(filename, GETPATH) == 1) {
fprintf(stderr, "pathname too long: truncat{ed/ing}\n");
return 1; /* GRR: NEEDS WORK! (do checking only when appending) */
}
if (created_dir && QCOND2) {
fprintf(stdout, " creating: %s\n", filename);
return IZ_CREATED_DIR; /* set dir time (note trailing '/') */
}
return 2; /* dir existed already; don't look for data to extract */
}
if (*pathcomp == '\0') {
fprintf(stderr, "mapname: conversion of %s failed\n", filename);
return 3;
}
if ((error = checkdir(pathcomp, APPEND_NAME)) == 1) {
/* GRR: OK if truncated here: warn and continue */
/* (warn in checkdir?) */
}
checkdir(filename, GETPATH);
return error;
} /* end function mapname() */
static int ispattern(char *p)
{
register char c;
while (c = *p++)
if (c == '\\') {
if (!*++p)
return FALSE;
} else if (c == '?' || c == '*')
return TRUE;
else if (c == '[') {
for (;;) {
if (!(c = *p++))
return FALSE;
else if (c == '\\') {
if (!*++p)
return FALSE;
} else if (c == ']')
return TRUE;
}
}
return FALSE;
}
/**********************/
/* Function do_wild() */ /* for porting: dir separator; match(ignore_case) */
/**********************/
char *do_wild(wildspec)
char *wildspec; /* only used first time on a given dir */
{
static DIR *dir = NULL;
static char *dirname, *wildname, matchname[FILNAMSIZ];
static int firstcall=TRUE, have_dirname, dirnamelen;
struct dirent *file;
BPTR lok = 0;
/* Even when we're just returning wildspec, we *always* do so in
* matchname[]--calling routine is allowed to append four characters
* to the returned string, and wildspec may be a pointer to argv[].
*/
if (firstcall) { /* first call: must initialize everything */
firstcall = FALSE;
/* avoid needless readdir() scans: */
if (!ispattern(wildspec) || (lok = Lock(wildspec, ACCESS_READ))) {
if (lok) UnLock(lok);
have_dirname = FALSE;
strcpy(matchname, wildspec);
return matchname;
}
/* break the wildspec into a directory part and a wildcard filename */
if ((wildname = strrchr(wildspec, '/')) == NULL
&& (wildname = strrchr(wildspec, ':')) == NULL) {
dirname = ""; /* current dir */
dirnamelen = 1;
have_dirname = FALSE;
wildname = wildspec;
} else {
++wildname; /* point at character after '/' or ':' */
dirnamelen = wildname - wildspec;
if ((dirname = (char *)malloc(dirnamelen+1)) == NULL) {
fprintf(stderr, "warning: can't allocate wildcard buffers\n");
strcpy(matchname, wildspec);
return matchname; /* but maybe filespec was not a wildcard */
}
strncpy(dirname, wildspec, dirnamelen);
dirname[dirnamelen] = 0;
have_dirname = TRUE;
}
if ((dir = opendir(dirname)) != NULL) {
while ((file = readdir(dir)) != NULL) {
if (match(file->d_name, wildname, 1)) { /* case insensitive */
if (have_dirname) {
strcpy(matchname, dirname);
strcpy(matchname+dirnamelen, file->d_name);
} else
strcpy(matchname, file->d_name);
return matchname;
}
}
/* if we get to here directory is exhausted, so close it */
closedir(dir);
dir = NULL;
}
/* return the raw wildspec in case that works (e.g., directory not
* searchable, but filespec was not wild and file is readable) */
strcpy(matchname, wildspec);
return matchname;
}
/* last time through, might have failed opendir but returned raw wildspec */
if (dir == NULL) {
firstcall = TRUE; /* nothing left to try--reset for new wildspec */
if (have_dirname)
free(dirname);
return (char *)NULL;
}
/* If we've gotten this far, we've read and matched at least one entry
* successfully (in a previous call), so dirname has been copied into
* matchname already.
*/
while ((file = readdir(dir)) != NULL)
if (match(file->d_name, wildname, 0)) { /* 0 == don't ignore case */
if (have_dirname) {
/* strcpy(matchname, dirname); */
strcpy(matchname+dirnamelen, file->d_name);
} else
strcpy(matchname, file->d_name);
return matchname;
}
closedir(dir); /* have read at least one dir entry; nothing left */
dir = NULL;
firstcall = TRUE; /* reset for new wildspec */
if (have_dirname)
free(dirname);
return (char *)NULL;
} /* end function do_wild() */
/***********************/
/* Function checkdir() */
/***********************/
int checkdir(pathcomp, flag)
char *pathcomp;
int flag;
/*
* returns: 1 - (on APPEND_xxx) truncated path component
* 2 - path doesn't exist, not allowed to create
* 3 - path doesn't exist, tried to create and failed; or
* path exists and is not a directory, but is supposed to be
* 10 - can't allocate memory for filename buffers
*/
{
static int rootlen = 0; /* length of rootpath */
static char *rootpath; /* user's "extract-to" directory */
static char *buildpath; /* full path (so far) to extracted file */
static char *end; /* pointer to end of buildpath ('\0') */
# define FN_MASK 7
# define FUNCTION (flag & FN_MASK)
/*---------------------------------------------------------------------------
APPEND_DIR: append the path component to the path being built and check
for its existence. If doesn't exist and we are creating directories, do
so for this one; else signal success or error as appropriate.
---------------------------------------------------------------------------*/
/* GRR: check path length after each segment: warn about truncation */
if (FUNCTION == APPEND_DIR) {
Trace((stderr, "appending dir segment [%s]\n", pathcomp));
while ((*end = *pathcomp++))
++end;
if (stat(buildpath, &statbuf)) { /* path doesn't exist */
if (!create_dirs) { /* told not to create (freshening) */
free(buildpath);
return 2; /* path doesn't exist: nothing to do */
}
if (MKDIR(buildpath, 0777) == -1) { /* create the directory */
fprintf(stderr,
"checkdir: can't create %s\n unable to process %s.\n"
, buildpath, filename);
fflush(stderr);
free(buildpath);
return 3; /* path didn't exist, tried to create, failed */
}
created_dir = TRUE;
} else if (!S_ISDIR(statbuf.st_mode)) {
fprintf(stderr, "checkdir: %s exists but is not a directory\n\
unable to process %s.\n", buildpath, filename);
fflush(stderr);
free(buildpath);
return 3; /* path existed but wasn't dir */
}
*end++ = '/';
*end = '\0';
Trace((stderr, "buildpath now = [%s]\n", buildpath));
return 0;
} /* end if (FUNCTION == APPEND_DIR) */
/*---------------------------------------------------------------------------
GETPATH: copy full path to the string pointed at by pathcomp, and free
buildpath.
---------------------------------------------------------------------------*/
if (FUNCTION == GETPATH) {
strcpy(pathcomp, buildpath); /* DO ERROR CHECKING: TOO LONG? */
Trace((stderr, "getting and freeing path [%s]\n", pathcomp));
free(buildpath);
buildpath = end = NULL;
return 0;
}
/*---------------------------------------------------------------------------
APPEND_NAME: assume the path component is the filename; append it and
return without checking for existence.
---------------------------------------------------------------------------*/
if (FUNCTION == APPEND_NAME) { /* DO ERROR CHECKING */
Trace((stderr, "appending filename [%s]\n", pathcomp));
while ((*end = *pathcomp++))
++end;
Trace((stderr, "buildpath now = [%s]\n", buildpath));
return 0; /* could check for existence here, prompt for new name... */
}
/*---------------------------------------------------------------------------
INIT: allocate and initialize buffer space for the file currently being
extracted. If file was renamed with an absolute path, don't prepend the
extract-to path.
---------------------------------------------------------------------------*/
if (FUNCTION == INIT) {
Trace((stderr, "initializing buildpath to "));
if ((buildpath = (char *)malloc(strlen(filename)+rootlen+1)) == NULL)
return 10;
if ((rootlen > 0) && !renamed_fullpath) {
strcpy(buildpath, rootpath);
end = buildpath + rootlen;
} else {
*buildpath = '\0';
end = buildpath;
}
Trace((stderr, "[%s]\n", buildpath));
return 0;
}
/*---------------------------------------------------------------------------
ROOT: if appropriate, store the path in rootpath and create it if neces-
sary; else assume it's a zipfile member and return. This path segment
gets used in extracting all members from every zipfile specified on the
command line.
---------------------------------------------------------------------------*/
if (FUNCTION == ROOT) {
Trace((stderr, "initializing root path to [%s]\n", pathcomp));
if (pathcomp == NULL) {
rootlen = 0;
return 0;
}
if ((rootlen = strlen(pathcomp)) > 0) {
int had_trailing_pathsep=FALSE;
if (pathcomp[rootlen-1] == '/') {
pathcomp[--rootlen] = '\0';
had_trailing_pathsep = TRUE;
}
if (stat(pathcomp, &statbuf) || !S_ISDIR(statbuf.st_mode)) {
/* path does not exist */
if (!create_dirs || !had_trailing_pathsep) {
rootlen = 0;
return 2; /* treat as stored file */
}
/* GRR: scan for wildcard characters? OS-dependent... if find any, return 2:
* treat as stored file(s) */
/* create the directory (could add loop here to scan pathcomp
* and create more than one level, but why really necessary?) */
if (MKDIR(pathcomp, 0777) == -1) {
fprintf(stderr,
"checkdir: can't create extraction directory: %s\n",
pathcomp);
fflush(stderr);
rootlen = 0; /* path didn't exist, tried to create, and */
return 3; /* failed: file exists, or 2+ levels required */
}
}
if ((rootpath = (char *)malloc(rootlen+2)) == NULL) {
rootlen = 0;
return 10;
}
strcpy(rootpath, pathcomp);
if (rootpath[rootlen - 1] != ':')
rootpath[rootlen++] = '/';
rootpath[rootlen] = '\0';
}
Trace((stderr, "rootpath now = [%s]\n", rootpath));
return 0;
}
/*---------------------------------------------------------------------------
END: free rootpath, immediately prior to program exit.
---------------------------------------------------------------------------*/
if (FUNCTION == END) {
Trace((stderr, "freeing rootpath\n"));
if (rootlen > 0)
free(rootpath);
return 0;
}
return 99; /* should never reach */
} /* end function checkdir() */
/**********************/
/* Function cmptime() */
/**********************/
/* cmptime() clone pinched from from Zip1.9h,
* by Mark Adler, Jean-loup Gailly, et al., circa 1991.
* Incorporated into UnZip 5.1d by John Bush
*/
int cmptime(p, q)
struct tm *p, *q; /* times to compare */
/* Return negative if time p is before time q, positive if after, and
zero if the same */
{
int r; /* temporary variable */
if (p == NULL)
return -1;
else if ((r = p->tm_year - q->tm_year) != 0)
return r;
else if ((r = p->tm_mon - q->tm_mon) != 0)
return r;
else if ((r = p->tm_mday - q->tm_mday) != 0)
return r;
else if ((r = p->tm_hour - q->tm_hour) != 0)
return r;
else if ((r = p->tm_min - q->tm_min) != 0)
return r;
else
return p->tm_sec - q->tm_sec;
}
/***********************/
/* Function invlocal() */
/***********************/
/* mktime() clone pinched from from Zip1.9h,
* by Mark Adler and Jean-loup Gailly, et.al, circa 1991.
* Incorporated into UnZip 5.1d by John Bush
*/
time_t invlocal(t)
struct tm *t; /* time to convert */
/* Find inverse of localtime() using bisection. This routine assumes that
time_t is an integer type, either signed or unsigned. The expectation
is that sometime before the year 2038, time_t will be made a 64-bit
integer, and this routine will still work. */
{
time_t i; /* midpoint of current root range */
time_t l; /* lower end of root range */
time_t u; /* upper end of root range */
/* Bracket the root [0,largest time_t]. Note: if time_t is a 32-bit signed
integer, then the upper bound is GMT 1/19/2038 03:14:07, after which all
the Unix systems in the world come to a grinding halt. Either that, or
all those systems will suddenly find themselves transported to December
of 1901 ... */
l = 0;
u = 1;
while (u < (u << 1))
u = (u << 1) + 1;
/* Find the root */
while (u - l > 1)
{
i = l + ((u - l) >> 1);
if (cmptime(localtime(&i), t) <= 0)
l = i;
else
u = i;
}
return l;
}
/**************************************/
/* Function close_outfile() */
/**************************************/
/* this part differs slightly with Zip */
/*-------------------------------------*/
void close_outfile(void)
{
struct tm t; /* good ole time structure */
time_t u[2]; /* mean ole time stamp */
ulg dd,dt; /* DOS format time stamps */
LONG FileDate();
time_t invlocal();
if (cflag) /* can't set time on stdout */
return;
/* close the file *before* setting its time under AmigaDos */
fclose(outfile);
/* assign date and time to local variables */
dd = lrec.last_mod_file_date;
dt = lrec.last_mod_file_time;
/* Convert DOS time to time_t format in (time_t)u */
t.tm_sec = (int) (dt << 1) & 0x3e;
t.tm_min = (int) (dt >> 5) & 0x3f;
t.tm_hour = (int) (dt >> 11) & 0x1f;
t.tm_mday = (int) (dd & 0x1f);
t.tm_mon = ((int) (dd >> 5) & 0xf ) - 1;
t.tm_year = ((int) (dd >> 9) & 0x7f) + 80;
/* invlocal() is equivalent to mktime() */
u[0] = u[1] = invlocal(&t);
#ifdef DEBUG
fprintf (stderr,"\nclose_outfile(): u=%s\n",ctime(&u[0]));
#endif
if (!FileDate(filename, u))
fprintf(stderr, "warning: can't set the time for %s\n", filename);
/* set file perms after closing (not done at creation)--see mapattr() */
chmod(filename, pInfo->file_attr);
} /* end function close_outfile() */
/********************************************************************/
/* Load filedate as a separate external file; it's used by Zip, too.*/
/* */
#include "amiga/filedate.c" /* */
/* */
/********************************************************************/
/**************** for Aztec, do linewise with stat.c ****************/
#ifdef AZTEC_C
# include "amiga/stat.c"
/* this is the exact same stat.c used for Aztec by Zip */
# include <stdio.h>
# include "crypt.h"
void _abort(void) /* called when ^C is pressed */
{
echon();
close_leftover_open_dirs();
fflush(stdout);
fputs("\n^C\n", stderr);
exit(1);
}
#endif /* AZTEC_C */