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/*---------------------------------------------------------------------------
unix.c
Unix-specific routines for use with Info-ZIP's UnZip 5.1 and later.
Contains: readdir()
do_wild() <-- generic enough to put in file_io.c?
mapattr()
mapname()
checkdir()
mkdir()
close_outfile()
---------------------------------------------------------------------------*/
#include "unzip.h"
/* SCO Unix, DNIX, TI SysV, Coherent 4.x, ... */
#if defined(__convexc__) || defined(SYSV) || defined(CRAY)
# define DIRENT
#endif
#ifdef COHERENT
# if defined(_I386) || (defined(__COHERENT__) && (__COHERENT__ >= 0x420))
# define DIRENT
# endif
#endif
/* GRR: may need to uncomment one or both of these for the relevant systems */
#if 0
#if defined(__386BSD__) || defined(_POSIX_VERSION)
# define DIRENT
#endif
#endif
#if 0
#if defined(M_XENIX)
# define SYSNDIR
#endif
#endif
#ifdef DIRENT
# include <dirent.h>
#else
# ifdef SYSV
# ifdef SYSNDIR
# include <sys/ndir.h>
# else
# include <ndir.h>
# endif
# else /* !SYSV */
# ifndef NO_SYSDIR
# include <sys/dir.h>
# endif
# endif /* ?SYSV */
# ifndef dirent
# define dirent direct
# endif
#endif /* ?DIRENT */
static int created_dir; /* used in mapname(), checkdir() */
static int renamed_fullpath; /* ditto */
#ifndef SFX
#ifdef NO_DIR /* for AT&T 3B1 */
#define opendir(path) fopen(path,"r")
#define closedir(dir) fclose(dir)
typedef FILE DIR;
/*
* Apparently originally by Rich Salz.
* Cleaned up and modified by James W. Birdsall.
*/
struct dirent *readdir(dirp)
DIR *dirp;
{
static struct dirent entry;
if (dirp == NULL)
return NULL;
for (;;)
if (fread(&entry, sizeof (struct dirent), 1, dirp) == 0)
return (struct dirent *)NULL;
else if (entry.d_ino)
return &entry;
} /* end function readdir() */
#endif /* NO_DIR */
/**********************/
/* 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;
/* 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;
/* break the wildspec into a directory part and a wildcard filename */
if ((wildname = strrchr(wildspec, '/')) == NULL) {
dirname = ".";
dirnamelen = 1;
have_dirname = FALSE;
wildname = wildspec;
} else {
++wildname; /* point at character after '/' */
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'; /* terminate for strcpy below */
have_dirname = TRUE;
}
if ((dir = opendir(dirname)) != NULL) {
while ((file = readdir(dir)) != NULL) {
if (file->d_name[0] == '.' && wildname[0] != '.')
continue; /* Unix: '*' and '?' do not match leading dot */
if (match(file->d_name, wildname, 0)) { /* 0 == case sens. */
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() */
#endif /* !SFX */
/**********************/
/* Function mapattr() */
/**********************/
int mapattr()
{
ulg tmp = crec.external_file_attributes;
switch (pInfo->hostnum) {
case UNIX_:
case VMS_:
pInfo->file_attr = (unsigned)(tmp >> 16);
return 0;
case AMIGA_:
tmp = (unsigned)(tmp>>17 & 7); /* Amiga RWE bits */
pInfo->file_attr = (unsigned)(tmp<<6 | tmp<<3 | tmp);
break;
/* all remaining cases: expand MSDOS read-only bit into write perms */
case FS_FAT_:
case FS_HPFS_:
case FS_NTFS_:
case MAC_:
case ATARI_: /* (used to set = 0666) */
case TOPS20_:
default:
tmp = !(tmp & 1) << 1; /* read-only bit --> write perms bits */
pInfo->file_attr = (unsigned)(0444 | tmp<<6 | tmp<<3 | tmp);
break;
} /* end switch (host-OS-created-by) */
/* for originating systems with no concept of "group," "other," "system": */
umask( (int)(tmp=umask(0)) ); /* apply mask to expanded r/w(/x) perms */
pInfo->file_attr &= ~tmp;
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.
---------------------------------------------------------------------------*/
if (pInfo->vollabel)
return IZ_VOL_LABEL; /* can't set disk volume labels in Unix */
/* 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 && (*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;
*pp++ = ';'; /* keep for now; remove VMS ";##" */
break; /* later, if requested */
case '\026': /* control-V quote for special chars */
quote = TRUE; /* set flag for next character */
break;
#ifdef MTS
case ' ': /* change spaces to underscore under */
*pp++ = '_'; /* MTS; leave as spaces under Unix */
break;
#endif
default:
/* allow European characters in filenames: */
if (isprint(workch) || (128 <= workch && workch <= 254))
*pp++ = (char)workch;
} /* end switch */
} /* end while loop */
*pp = '\0'; /* done with pathcomp: terminate it */
/* if not saving them, remove 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] == '/') {
checkdir(filename, GETPATH);
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;
}
checkdir(pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */
checkdir(filename, GETPATH);
return error;
} /* end function mapname() */
#if 0 /*========== NOTES ==========*/
extract-to dir: a:path/
buildpath: path1/path2/ ... (NULL-terminated)
pathcomp: filename
mapname():
loop over chars in zipfile member name
checkdir(path component, COMPONENT | CREATEDIR) --> map as required?
(d:/tmp/unzip/) (disk:[tmp.unzip.)
(d:/tmp/unzip/jj/) (disk:[tmp.unzip.jj.)
(d:/tmp/unzip/jj/temp/) (disk:[tmp.unzip.jj.temp.)
finally add filename itself and check for existence? (could use with rename)
(d:/tmp/unzip/jj/temp/msg.outdir) (disk:[tmp.unzip.jj.temp]msg.outdir)
checkdir(name, COPYFREE) --> copy path to name and free space
#endif /* 0 */
/***********************/
/* Function checkdir() */
/***********************/
int checkdir(pathcomp, flag)
char *pathcomp;
int flag;
/*
* returns: 1 - (on APPEND_NAME) truncated filename
* 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
* 4 - path is too long
* 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.
---------------------------------------------------------------------------*/
if (FUNCTION == APPEND_DIR) {
int too_long = FALSE;
#ifdef SHORT_NAMES
char *old_end = end;
#endif
Trace((stderr, "appending dir segment [%s]\n", pathcomp));
while ((*end = *pathcomp++) != '\0')
++end;
#ifdef SHORT_NAMES /* path components restricted to 14 chars, typically */
if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
*(end = old_end + FILENAME_MAX) = '\0';
#endif
/* GRR: could do better check, see if overrunning buffer as we go:
* check end-buildpath after each append, set warning variable if
* within 20 of FILNAMSIZ; then if var set, do careful check when
* appending. Clear variable when begin new path. */
if ((end-buildpath) > FILNAMSIZ-3) /* need '/', one-char name, '\0' */
too_long = TRUE; /* check if extracting directory? */
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 (too_long) {
fprintf(stderr, "checkdir error: path too long: %s\n",
buildpath);
fflush(stderr);
free(buildpath);
return 4; /* no room for filenames: fatal */
}
if (mkdir(buildpath, 0777) == -1) { /* create the directory */
fprintf(stderr, "checkdir error: 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 error: %s exists but is not directory\n\
unable to process %s.\n", buildpath, filename);
fflush(stderr);
free(buildpath);
return 3; /* path existed but wasn't dir */
}
if (too_long) {
fprintf(stderr, "checkdir error: path too long: %s\n", buildpath);
fflush(stderr);
free(buildpath);
return 4; /* no room for filenames: fatal */
}
*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);
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) {
#ifdef SHORT_NAMES
char *old_end = end;
#endif
Trace((stderr, "appending filename [%s]\n", pathcomp));
while ((*end = *pathcomp++) != '\0') {
++end;
#ifdef SHORT_NAMES /* truncate name at 14 characters, typically */
if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
*(end = old_end + FILENAME_MAX) = '\0';
#endif
if ((end-buildpath) >= FILNAMSIZ) {
*--end = '\0';
fprintf(stderr, "checkdir warning: path too long; truncating\n\
checkdir warning: path too long; truncating\n\
%s\n -> %s\n", filename, buildpath);
fflush(stderr);
return 1; /* filename truncated */
}
}
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.
---------------------------------------------------------------------------*/
/* GRR: for VMS and TOPS-20, add up to 13 to strlen */
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 /* || isshexp(pathcomp) */
#ifdef OLD_EXDIR
|| !had_trailing_pathsep
#endif
) {
rootlen = 0;
return 2; /* skip (or treat as stored file) */
}
/* 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);
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() */
#ifdef NO_MKDIR
/********************/
/* Function mkdir() */
/********************/
int mkdir(path, mode)
char *path;
int mode; /* ignored */
/*
* returns: 0 - successful
* -1 - failed (errno not set, however)
*/
{
char command[FILNAMSIZ+40]; /* buffer for system() call */
/* GRR 930416: added single quotes around path to avoid bug with
* creating directories with ampersands in name; not yet tested */
sprintf(command, "IFS=\" \t\n\" /bin/mkdir '%s' 2>/dev/null", path);
if (system(command))
return -1;
return 0;
}
#endif /* NO_MKDIR */
#ifndef MTS
/****************************/
/* Function close_outfile() */
/****************************/
void close_outfile()
{
static short yday[]={0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
long m_time;
int yr, mo, dy, hh, mm, ss, leap, days;
struct utimbuf tp;
# define YRBASE 1970
#ifndef __386BSD__
#ifdef BSD
static struct timeb tbp;
#else /* !BSD */
extern long timezone;
#endif /* ?BSD */
#endif /* !__386BSD__ */
/*---------------------------------------------------------------------------
If symbolic links are supported, allocate a storage area, put the uncom-
pressed "data" in it, and create the link. Since we know it's a symbolic
link to start with, we shouldn't have to worry about overflowing unsigned
ints with unsigned longs.
---------------------------------------------------------------------------*/
#ifdef SYMLINKS
if (symlnk) {
unsigned ucsize = (unsigned)lrec.ucsize;
char *linktarget = (char *)malloc((unsigned)lrec.ucsize+1);
fclose(outfile); /* close "data" file... */
outfile = fopen(filename, FOPR); /* ...and reopen for reading */
if (!linktarget || (fread(linktarget, 1, ucsize, outfile) != ucsize)) {
fprintf(stderr, "\nwarning: symbolic link (%s) failed\n",
filename);
if (linktarget)
free(linktarget);
fclose(outfile);
return;
}
fclose(outfile); /* close "data" file for good... */
unlink(filename); /* ...and delete it */
linktarget[ucsize] = '\0';
fprintf(stdout, "-> %s ", linktarget);
if (symlink(linktarget, filename)) /* create the real link */
perror("symlink error");
free(linktarget);
return; /* can't set time on symlinks */
}
#endif /* SYMLINKS */
fclose(outfile);
/*---------------------------------------------------------------------------
Change the file permissions from default ones to those stored in the
zipfile.
---------------------------------------------------------------------------*/
#ifndef NO_CHMOD
if (chmod(filename, 0xffff & pInfo->file_attr))
perror("chmod (file attributes) error");
#endif
/*---------------------------------------------------------------------------
Convert from MSDOS-format local time and date to Unix-format 32-bit GMT
time: adjust base year from 1980 to 1970, do usual conversions from
yy/mm/dd hh:mm:ss to elapsed seconds, and account for timezone and day-
light savings time differences.
---------------------------------------------------------------------------*/
yr = ((lrec.last_mod_file_date >> 9) & 0x7f) + (1980 - YRBASE);
mo = ((lrec.last_mod_file_date >> 5) & 0x0f) - 1;
dy = (lrec.last_mod_file_date & 0x1f) - 1;
hh = (lrec.last_mod_file_time >> 11) & 0x1f;
mm = (lrec.last_mod_file_time >> 5) & 0x3f;
ss = (lrec.last_mod_file_time & 0x1f) * 2;
/* leap = # of leap yrs from YRBASE up to but not including current year */
leap = ((yr + YRBASE - 1) / 4); /* leap year base factor */
/* how many days from YRBASE to this year? (& add expired days this year) */
days = (yr * 365) + (leap - 492) + yday[mo];
/* if year is a leap year and month is after February, add another day */
if ((mo > 1) && ((yr+YRBASE)%4 == 0) && ((yr+YRBASE) != 2100))
++days; /* OK through 2199 */
/* convert date & time to seconds relative to 00:00:00, 01/01/YRBASE */
m_time = ((days + dy) * 86400) + (hh * 3600) + (mm * 60) + ss;
/* adjust for local timezone */
#ifdef BSD
#if (defined(__386BSD__) || defined(__bsdi__))
m_time -= localtime(&m_time)->tm_gmtoff; /* seconds EAST of GMT: subtr. */
#else
ftime(&tbp); /* get `timezone' */
m_time += tbp.timezone * 60L; /* seconds WEST of GMT: add */
#endif
#else /* !BSD */
tzset(); /* get `timezone' */
m_time += timezone; /* seconds WEST of GMT: add */
#endif /* ?BSD */
/* adjust for daylight savings time (or local equivalent) */
#ifndef __386BSD__ /* (DST already added to tm_gmtoff, so skip tm_isdst) */
if (localtime(&m_time)->tm_isdst)
m_time -= 60L * 60L; /* adjust for daylight savings time */
#endif
/* set the file's access and modification times */
tp.actime = tp.modtime = m_time;
if (utime(filename, &tp)) {
#ifdef AOS_VS
fprintf(stderr, "... can't set time for %s", filename);
#else
fprintf(stderr, "warning: can't set the time for %s\n", filename);
#endif
FFLUSH(stderr);
}
} /* end function close_outfile() */
#endif /* !MTS */
#if 0
/**************************************/
/* Function set_file_time_and_close() */
/**************************************/
void set_file_time_and_close()
{
static short yday[]={0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
long m_time;
int yr, mo, dy, hh, mm, ss, leap, days;
struct utimbuf tp;
# define YRBASE 1970
#ifndef __386BSD__
#ifdef BSD
static struct timeb tbp;
#else /* !BSD */
extern long timezone;
#endif /* ?BSD */
#endif /* !__386BSD__ */
/*---------------------------------------------------------------------------
If symbolic links are supported, allocate a storage area, put the uncom-
pressed "data" in it, and create the link. Since we know it's a symbolic
link to start with, we shouldn't have to worry about overflowing unsigned
ints with unsigned longs.
---------------------------------------------------------------------------*/
#ifdef SYMLINKS
if (symlnk) {
unsigned ucsize = (unsigned)lrec.ucsize;
char *linktarget = (char *)malloc((unsigned)lrec.ucsize+1);
close(outfd); /* close "data" file... */
outfd = open(filename, O_RDONLY); /* ...and reopen for reading */
if (!linktarget || (read(outfd, linktarget, ucsize) != ucsize)) {
fprintf(stderr, "\nwarning: symbolic link (%s) failed\n",
filename);
if (linktarget)
free(linktarget);
close(outfd);
return;
}
close(outfd); /* close "data" file for good... */
unlink(filename); /* ...and delete it */
linktarget[ucsize] = '\0';
fprintf(stdout, "-> %s ", linktarget);
if (symlink(linktarget, filename)) /* create the real link */
perror("symlink error");
free(linktarget);
return; /* can't set time on symlinks */
}
#endif /* SYMLINKS */
close(outfd);
if (cflag) /* can't set time on stdout */
return;
/*---------------------------------------------------------------------------
Convert from MSDOS-format local time and date to Unix-format 32-bit GMT
time: adjust base year from 1980 to 1970, do usual conversions from
yy/mm/dd hh:mm:ss to elapsed seconds, and account for timezone and day-
light savings time differences.
---------------------------------------------------------------------------*/
yr = ((lrec.last_mod_file_date >> 9) & 0x7f) + (1980 - YRBASE);
mo = ((lrec.last_mod_file_date >> 5) & 0x0f) - 1;
dy = (lrec.last_mod_file_date & 0x1f) - 1;
hh = (lrec.last_mod_file_time >> 11) & 0x1f;
mm = (lrec.last_mod_file_time >> 5) & 0x3f;
ss = (lrec.last_mod_file_time & 0x1f) * 2;
/* leap = # of leap yrs from YRBASE up to but not including current year */
leap = ((yr + YRBASE - 1) / 4); /* leap year base factor */
/* how many days from YRBASE to this year? (& add expired days this year) */
days = (yr * 365) + (leap - 492) + yday[mo];
/* if year is a leap year and month is after February, add another day */
if ((mo > 1) && ((yr+YRBASE)%4 == 0) && ((yr+YRBASE) != 2100))
++days; /* OK through 2199 */
/* convert date & time to seconds relative to 00:00:00, 01/01/YRBASE */
m_time = ((days + dy) * 86400) + (hh * 3600) + (mm * 60) + ss;
/* adjust for local timezone */
#ifdef BSD
#ifdef __386BSD__
m_time -= localtime(&m_time)->tm_gmtoff; /* seconds EAST of GMT: subtr. */
#else
ftime(&tbp); /* get `timezone' */
m_time += tbp.timezone * 60L; /* seconds WEST of GMT: add */
#endif
#else /* !BSD */
tzset(); /* get `timezone' */
m_time += timezone; /* seconds WEST of GMT: add */
#endif /* ?BSD */
/* adjust for daylight savings time (or local equivalent) */
#ifndef __386BSD__ /* (DST already added to tm_gmtoff, so skip tm_isdst) */
if (localtime(&m_time)->tm_isdst)
m_time -= 60L * 60L; /* adjust for daylight savings time */
#endif
/* set the file's access and modification times */
tp.actime = tp.modtime = m_time;
if (utime(filename, &tp))
fprintf(stderr, "warning: can't set the time for %s\n", filename);
} /* end function set_file_time_and_close() */
#endif /* 0 */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.