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unzip/theos/theos.c

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/*
Copyright (c) 1990-2005 Info-ZIP. All rights reserved.
See the accompanying file LICENSE, version 2000-Apr-09 or later
(the contents of which are also included in unzip.h) for terms of use.
If, for some reason, all these files are missing, the Info-ZIP license
also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
*/
/*---------------------------------------------------------------------------
theos.c
Theos-specific routines for use with Info-ZIP's UnZip 5.41 and later.
Contains: do_wild() <-- generic enough to put in fileio.c?
mapattr()
mapname()
checkdir()
close_outfile()
defer_dir_attribs()
set_direc_attribs()
stamp_file()
version()
---------------------------------------------------------------------------*/
#define UNZIP_INTERNAL
#include "unzip.h"
#include <direct.h>
#include <sc.h>
#include <fdb.h>
#include <nuc.h>
#include <peek.h>
/* standard function doesn't work with a trailing / */
#define opendir(a) _opendir(a)
extern DIR* _opendir(const char* dirpath);
#ifdef SET_DIR_ATTRIB
typedef struct uxdirattr { /* struct for holding unix style directory */
struct uxdirattr *next; /* info until can be sorted and set at end */
char *fn; /* filename of directory */
union {
iztimes t3; /* mtime, atime, ctime */
ztimbuf t2; /* modtime, actime */
} u;
unsigned perms; /* same as min_info.file_attr */
char fnbuf[1]; /* buffer stub for directory name */
} uxdirattr;
#define UxAtt(d) ((uxdirattr *)d) /* typecast shortcut */
#endif /* SET_DIR_ATTRIB */
#ifdef ACORN_FTYPE_NFS
/* Acorn bits for NFS filetyping */
typedef struct {
uch ID[2];
uch size[2];
uch ID_2[4];
uch loadaddr[4];
uch execaddr[4];
uch attr[4];
} RO_extra_block;
#endif /* ACORN_FTYPE_NFS */
static int created_dir; /* used in mapname(), checkdir() */
static int renamed_fullpath; /* ditto */
#define _FDB_SHARED_EXECUTE_PROTECT _FDB_MODIFIED
uch _um2tm_(ush mask);
int chmodv2_3(const char *fname, short mask)
{
return _filechange(fname,'p',(size_t) _um2tm_(mask)|0x80);
}
int chlen(char *fname, unsigned short reclen, unsigned short keylen)
{
size_t a = reclen + ((size_t) keylen << 16);
return _filechange(fname,'ma',(size_t) &a);
}
#define chgrow(a,b) ((int) _filechange(a,'g',(size_t)(b)))
#define chorg(a,b) ((int) _filechange(a,'m',(size_t)(b)))
#ifndef SFX
/*************************/
/* Function dateformat() */
/*************************/
int dateformat()
{
/*---------------------------------------------------------------------------
For those operating systems that support it, this function returns a
value that tells how national convention says that numeric dates are
displayed. Return values are DF_YMD, DF_DMY and DF_MDY (the meanings
should be fairly obvious).
---------------------------------------------------------------------------*/
switch (peeknuc(&NUC->dateopt) & (aform|eform|iform)) {
case aform: return DF_MDY;
case eform: return DF_DMY;
}
return DF_YMD;
}
/* usual THEOS match function for filenames */
/* match from Phase One Systems */
/* Returns non-zero if string matches the literal mask */
int match(string, pattern, ignore_case __WDL)
ZCONST char *string;
ZCONST char *pattern;
int ignore_case; /* unused in this variant of match()! */
__WDLDEF
{
int matched, k;
if (!(*pattern))
return 1;
for(;;) {
if ( (!(*string)) && (!(*pattern)) )
return(1);
else if ( !(*pattern) )
return(0);
else if (*pattern == '*') {
if (!*(pattern+1))
return(1);
k=0;
do {
matched = match(string+k, pattern+1, ignore_case __WDL);
k++;
} while ( (!matched) && *(string+k));
return(matched);
} else if (*pattern == '@') {
if (!((*string >= 'a' && *string <= 'z')
||(*string >= 'A' && *string <= 'Z')))
return(0);
} else if (*pattern == '#') {
if (*string < '0' || *string > '9')
return(0);
} else if (*pattern != '?') {
if (toupper(*string) != toupper(*pattern))
return(0);
}
string++; pattern++;
}
} /* end function match() */
/**********************/
/* Function do_wild() */ /* for porting: dir separator; match(ignore_case) */
/**********************/
char *do_wild(__G__ wildspec)
__GDEF
ZCONST char *wildspec; /* only used first time on a given dir */
{
static DIR *wild_dir = (DIR *)NULL;
static ZCONST char *wildname;
static char *dirname, matchname[FILNAMSIZ];
static int notfirstcall=FALSE, 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 (!notfirstcall) { /* first call: must initialize everything */
notfirstcall = TRUE;
if (!iswild(wildspec)) {
strcpy(matchname, wildspec);
have_dirname = FALSE;
wild_dir = NULL;
return matchname;
}
/* break the wildspec into a directory part and a wildcard filename */
if ((wildname = (ZCONST char *)strrchr(wildspec, '/')) ==
(ZCONST char *)NULL)
{
dirname = ".";
dirnamelen = 1;
have_dirname = FALSE;
wildname = wildspec;
} else {
++wildname; /* point at character after '/' */
dirnamelen = wildname - wildspec;
if ((dirname = (char *)malloc(dirnamelen+1)) == (char *)NULL) {
Info(slide, 0x201, ((char *)slide,
"warning: cannot allocate wildcard buffers\n"));
strncpy(matchname, wildspec, FILNAMSIZ);
matchname[FILNAMSIZ-1] = '\0';
return matchname; /* but maybe filespec was not a wildcard */
}
strncpy(dirname, wildspec, dirnamelen);
dirname[dirnamelen] = '\0'; /* terminate for strcpy below */
have_dirname = TRUE;
}
if ((wild_dir = opendir(dirname)) != (DIR *)NULL) {
while ((file = readdir(wild_dir)) != (struct dirent *)NULL) {
Trace((stderr, "do_wild: readdir returns %s\n",
FnFilter1(file->d_name)));
if (match(file->d_name, wildname, 1 WISEP)) { /*1=ignore case*/
Trace((stderr, "do_wild: match() succeeds\n"));
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(wild_dir);
wild_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) */
strncpy(matchname, wildspec, FILNAMSIZ);
matchname[FILNAMSIZ-1] = '\0';
return matchname;
}
/* last time through, might have failed opendir but returned raw wildspec */
if (wild_dir == (DIR *)NULL) {
notfirstcall = FALSE; /* 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(wild_dir)) != (struct dirent *)NULL) {
Trace((stderr, "do_wild: readdir returns %s\n",
FnFilter1(file->d_name)));
if (file->d_name[0] == '.' && wildname[0] != '.')
continue; /* Unix: '*' and '?' do not match leading dot */
if (match(file->d_name, wildname, 1 WISEP)) { /* 1 == ignore case */
Trace((stderr, "do_wild: match() succeeds\n"));
if (have_dirname) {
/* strcpy(matchname, dirname); */
strcpy(matchname+dirnamelen, file->d_name);
} else
strcpy(matchname, file->d_name);
return matchname;
}
}
closedir(wild_dir); /* have read at least one entry; nothing left */
wild_dir = (DIR *)NULL;
notfirstcall = FALSE; /* reset for new wildspec */
if (have_dirname)
free(dirname);
return (char *)NULL;
} /* end function do_wild() */
#endif /* !SFX */
/**********************/
/* Function mapattr() */
/**********************/
int mapattr(__G)
__GDEF
{
ulg tmp = G.crec.external_file_attributes;
G.pInfo->file_attr = 0;
/* initialized to 0 for check in "default" branch below... */
switch (G.pInfo->hostnum) {
case AMIGA_:
tmp = (unsigned)(tmp>>17 & 7); /* Amiga RWE bits */
G.pInfo->file_attr = (unsigned)(tmp<<6 | tmp<<3 | tmp);
break;
case UNIX_:
case VMS_:
case ACORN_:
case ATARI_:
case ATHEOS_:
case BEOS_:
case QDOS_:
case TANDEM_:
case THEOS_:
G.pInfo->file_attr = (unsigned)(tmp >> 16);
if (G.pInfo->file_attr != 0 || !G.extra_field) {
return 0;
} else {
/* Some (non-Info-ZIP) implementations of Zip for Unix and
* VMS (and probably others ??) leave 0 in the upper 16-bit
* part of the external_file_attributes field. Instead, they
* store file permission attributes in some extra field.
* As a work-around, we search for the presence of one of
* these extra fields and fall back to the MSDOS compatible
* part of external_file_attributes if one of the known
* e.f. types has been detected.
* Later, we might implement extraction of the permission
* bits from the VMS extra field. But for now, the work-around
* should be sufficient to provide "readable" extracted files.
* (For ASI Unix e.f., an experimental remap from the e.f.
* mode value IS already provided!)
*/
ush ebID;
unsigned ebLen;
uch *ef = G.extra_field;
unsigned ef_len = G.crec.extra_field_length;
int r = FALSE;
while (!r && ef_len >= EB_HEADSIZE) {
ebID = makeword(ef);
ebLen = (unsigned)makeword(ef+EB_LEN);
if (ebLen > (ef_len - EB_HEADSIZE))
/* discoverd some e.f. inconsistency! */
break;
switch (ebID) {
case EF_ASIUNIX:
if (ebLen >= (EB_ASI_MODE+2)) {
G.pInfo->file_attr =
(unsigned)makeword(ef+(EB_HEADSIZE+EB_ASI_MODE));
/* force stop of loop: */
ef_len = (ebLen + EB_HEADSIZE);
break;
}
/* else: fall through! */
case EF_PKVMS:
/* "found nondecypherable e.f. with perm. attr" */
r = TRUE;
default:
break;
}
ef_len -= (ebLen + EB_HEADSIZE);
ef += (ebLen + EB_HEADSIZE);
}
if (!r)
return 0;
}
/* fall through! */
/* all remaining cases: expand MSDOS read-only bit into write perms */
case FS_FAT_:
/* PKWARE's PKZip for Unix marks entries as FS_FAT_, but stores the
* Unix attributes in the upper 16 bits of the external attributes
* field, just like Info-ZIP's Zip for Unix. We try to use that
* value, after a check for consistency with the MSDOS attribute
* bits (see below).
*/
G.pInfo->file_attr = (unsigned)(tmp >> 16);
/* fall through! */
case FS_HPFS_:
case FS_NTFS_:
case MAC_:
case TOPS20_:
default:
/* Ensure that DOS subdir bit is set when the entry's name ends
* in a '/'. Some third-party Zip programs fail to set the subdir
* bit for directory entries.
*/
if ((tmp & 0x10) == 0) {
extent fnlen = strlen(G.filename);
if (fnlen > 0 && G.filename[fnlen-1] == '/')
tmp |= 0x10;
}
/* read-only bit --> write perms; subdir bit --> dir exec bit */
tmp = !(tmp & 1) << 1 | (tmp & 0x10) >> 4;
if ((G.pInfo->file_attr & 0700) == (unsigned)(0400 | tmp<<6))
/* keep previous G.pInfo->file_attr setting, when its "owner"
* part appears to be consistent with DOS attribute flags!
*/
return 0;
G.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": */
G.pInfo->file_attr &= ~tmp;
return 0;
} /* end function mapattr() */
/* portabilibity functions to ensure access to port 2.0 and new ports */
int isv2_3()
{
return G.extra_field[0] == 'T' && G.extra_field[1] == 'h';
}
int isv2_3lib()
{
return isv2_3() && S_ISLIB((G.pInfo->file_attr >> 8) & 0xFF);
}
int isv2_3dir()
{
return isv2_3() && S_ISDIR((G.pInfo->file_attr >> 8) & 0xFF);
}
#ifdef OLD_THEOS_EXTRA
#define S_IFMT_ 0xf800 /* type of file */
#define S_IFLIB_ 0x8000 /* library */
#define S_IFDIR_ 0x4000 /* directory */
#define S_ISLIB_(a) (((a) & 0xff) == _FDB_STAT_LIBRARY)
#define S_ISDIR_(a) (((a) & 0xff) == _FDB_STAT_DIRECTORY)
struct extra_block
{
ush signature;
ush size;
ush flags;
ulg filesize;
ush reclen;
ush keylen;
uch filegrow;
uch reserved[3];
};
struct extra_block *v2_0extra()
{
return (struct extra_block *) G.extra_field;
}
int isv2_0()
{
return ((struct extra_block *) G.extra_field)->signature == 0x4854;
}
int isv2_0lib()
{
return isv2_0() && S_ISLIB_(G.pInfo->file_attr);
}
int isv2_0dir()
{
return isv2_0() && S_ISDIR_(G.pInfo->file_attr);
}
#define islib() (isv2_0lib() || isv2_3lib())
#define isdir() (isv2_0dir() || isv2_3dir())
#define chmodv2_0(a,b) ((int) _sc_168(a,'p',(size_t)(b)|0x80))
#undef chmod
#define chmod(a,b) (isv2_0() && chmodv2_0(a,b))||(isv2_3() && chmodv2_3(a,b))
#else
#define islib() isv2_3lib()
#define isdir() isv2_3dir()
#undef chmod
#define chmod(a,b) chmodv2_0(a,b)
#endif
/************************/
/* Function mapname() */
/************************/
int mapname(__G__ renamed)
__GDEF
int renamed;
/*
* returns:
* MPN_OK - no problem detected
* MPN_INF_TRUNC - caution (truncated filename)
* MPN_INF_SKIP - info "skip entry" (dir doesn't exist)
* MPN_ERR_SKIP - error -> skip entry
* MPN_ERR_TOOLONG - error -> path is too long
* MPN_NOMEM - error (memory allocation failed) -> skip entry
* [also MPN_VOL_LABEL, MPN_CREATED_DIR]
*/
{
char pathcomp[FILNAMSIZ]; /* path-component buffer */
char *pp, *cp=(char *)NULL; /* character pointers */
char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */
#ifdef ACORN_FTYPE_NFS
char *lastcomma=(char *)NULL; /* pointer to last comma in pathcomp */
RO_extra_block *ef_spark; /* pointer Acorn FTYPE ef block */
#endif
int killed_ddot = FALSE; /* is set when skipping "../" pathcomp */
int error = MPN_OK;
register unsigned workch; /* hold the character being tested */
/*---------------------------------------------------------------------------
Initialize various pointers and counters and stuff.
---------------------------------------------------------------------------*/
if (G.pInfo->vollabel)
return MPN_VOL_LABEL; /* can't set disk volume labels in Unix */
/* can create path as long as not just freshening, or if user told us */
G.create_dirs = (!uO.fflag || renamed);
created_dir = FALSE; /* not yet */
/* user gave full pathname: don't prepend rootpath */
renamed_fullpath = (renamed && (*G.filename == '/'));
if (checkdir(__G__ (char *)NULL, INIT) == MPN_NOMEM)
return MPN_NOMEM; /* initialize path buffer, unless no memory */
*pathcomp = '\0'; /* initialize translation buffer */
pp = pathcomp; /* point to translation buffer */
if (uO.jflag) /* junking directories */
cp = (char *)strrchr(G.filename, '/');
if (cp == (char *)NULL) /* no '/' or not junking dirs */
cp = G.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) {
switch (workch) {
case '/': /* can assume -j flag not given */
*pp = '\0';
if (strcmp(pathcomp, ".") == 0) {
/* don't bother appending "./" to the path */
*pathcomp = '\0';
} else if (!uO.ddotflag && strcmp(pathcomp, "..") == 0) {
/* "../" dir traversal detected, skip over it */
*pathcomp = '\0';
killed_ddot = TRUE; /* set "show message" flag */
}
/* when path component is not empty, append it now */
if (*pathcomp != '\0' &&
((error = checkdir(__G__ pathcomp, APPEND_DIR))
& MPN_MASK) > MPN_INF_TRUNC)
return error;
pp = pathcomp; /* reset conversion buffer for next piece */
lastsemi = (char *)NULL; /* leave direct. semi-colons alone */
break;
#ifdef ACORN_FTYPE_NFS
case ',': /* NFS filetype extension */
lastcomma = pp;
*pp++ = ','; /* keep for now; may need to remove */
break; /* later, if requested */
#endif
default:
if (isfnsym(workch) || workch == '.')
*pp++ = (char)workch;
else
*pp++ = '_';
} /* end switch */
} /* end while loop */
/* Show warning when stripping insecure "parent dir" path components */
if (killed_ddot && QCOND2) {
Info(slide, 0, ((char *)slide,
"warning: skipped \"../\" path component(s) in %s\n",
FnFilter1(G.filename)));
if (!(error & ~MPN_MASK))
error = (error & MPN_MASK) | PK_WARN;
}
/*---------------------------------------------------------------------------
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 (G.filename[strlen(G.filename) - 1] == '/') {
checkdir(__G__ G.filename, GETPATH);
if (islib() && G.filename[strlen(G.filename) - 1] == '/')
G.filename[strlen(G.filename) - 1] = '\0';
if (created_dir) {
if (QCOND2) {
Info(slide, 0, ((char *)slide, " creating: %s\n",
FnFilter1(G.filename)));
}
/* set dir time (note trailing '/') */
return (error & ~MPN_MASK) | MPN_CREATED_DIR;
}
/* dir existed already; don't look for data to extract */
return (error & ~MPN_MASK) | MPN_INF_SKIP;
}
*pp = '\0'; /* done with pathcomp: terminate it */
#ifdef ACORN_FTYPE_NFS
/* translate Acorn filetype information if asked to do so */
if (uO.acorn_nfs_ext &&
(ef_spark = (RO_extra_block *)
getRISCOSexfield(G.extra_field, G.lrec.extra_field_length))
!= (RO_extra_block *)NULL)
{
/* file *must* have a RISC OS extra field */
long ft = (long)makelong(ef_spark->loadaddr);
/*32-bit*/
if (lastcomma) {
pp = lastcomma + 1;
while (isxdigit((uch)(*pp))) ++pp;
if (pp == lastcomma+4 && *pp == '\0') *lastcomma='\0'; /* nuke */
}
if ((ft & 1<<31)==0) ft=0x000FFD00;
sprintf(pathcomp+strlen(pathcomp), ",%03x", (int)(ft>>8) & 0xFFF);
}
#endif /* ACORN_FTYPE_NFS */
if (*pathcomp == '\0') {
Info(slide, 1, ((char *)slide, "mapname: conversion of %s failed\n",
FnFilter1(G.filename)));
return (error & ~MPN_MASK) | MPN_ERR_SKIP;
}
checkdir(__G__ pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */
checkdir(__G__ G.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, GETPATH) --> copy path to name and free space
#endif /* 0 */
/***********************/
/* Function checkdir() */
/***********************/
int checkdir(__G__ pathcomp, flag)
__GDEF
char *pathcomp;
int flag;
/*
* returns:
* MPN_OK - no problem detected
* MPN_INF_TRUNC - (on APPEND_NAME) truncated filename
* MPN_INF_SKIP - path doesn't exist, not allowed to create
* MPN_ERR_SKIP - path doesn't exist, tried to create and failed; or path
* exists and is not a directory, but is supposed to be
* MPN_ERR_TOOLONG - path is too long
* MPN_NOMEM - can't allocate memory for filename buffers
*/
{
static int rootlen = 0; /* length of rootpath */
static char *rootpath; /* user's "extract-to" directory */
static char rootdisk[3]; /* user's "extract-to" disk */
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", FnFilter1(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? */
Trace((stderr, "appending disk segment [%s]\n", FnFilter1(rootdisk)));
strcat(buildpath, rootdisk);
if (stat(buildpath, &G.statbuf)) { /* path doesn't exist */
if (!G.create_dirs) { /* told not to create (freshening) */
free(buildpath);
return MPN_INF_SKIP; /* path doesn't exist: nothing to do */
}
if (too_long) {
Info(slide, 1, ((char *)slide,
"checkdir error: path too long: %s\n",
FnFilter1(buildpath)));
free(buildpath);
/* no room for filenames: fatal */
return MPN_ERR_TOOLONG;
}
if (islib()) {
ulg size;
#ifdef OLD_THEOS_EXTRA
if (isv2_0lib())
size = v2_0extra()->filesize;
else
#endif
{
size = (ulg) G.extra_field[5] |
((ulg) G.extra_field[6] << 8) |
((ulg) G.extra_field[7] << 16) |
((ulg) G.extra_field[8] << 24);
}
if (makelib(buildpath, size / 64)) {
Info(slide, 1, ((char*)slide,
"checkdir error: can't create library %s\n\
unable to process %s.\n",
FnFilter2(buildpath), FnFilter1(G.filename));
free(buildpath);
/* path didn't exist, tried to create, failed */
return MPN_ERR_SKIP;
}
} else if (mkdir(buildpath) == -1) { /* create the directory */
Info(slide, 1, ((char *)slide,
"checkdir error: cannot create %s\n\
unable to process %s.\n",
FnFilter2(buildpath), FnFilter1(G.filename));
free(buildpath);
/* path didn't exist, tried to create, failed */
return MPN_ERR_SKIP;
}
created_dir = TRUE;
} else if (!S_ISDIR(G.statbuf.st_mode) && isdir()) {
Info(slide, 1, ((char *)slide,
"checkdir error: %s exists but is not directory\n\
unable to process %s.\n",
FnFilter2(buildpath), FnFilter1(G.filename));
free(buildpath);
/* path existed but wasn't dir */
return MPN_ERR_SKIP;
} else if (!S_ISLIB(G.statbuf.st_mode) && islib()) {
Info(slide, 1, ((char *)slide,
"checkdir error: %s exists but is not library\n\
unable to process %s.\n",
FnFilter2(buildpath), FnFilter1(G.filename));
free(buildpath);
/* path existed but wasn't lib */
return MPN_ERR_SKIP;
}
if (too_long) {
Info(slide, 1, ((char *)slide,
"checkdir error: path too long: %s\n", FnFilter1(buildpath)));
free(buildpath);
/* no room for filenames: fatal */
return MPN_ERR_TOOLONG;
}
*end++ = '/';
*end = '\0';
Trace((stderr, "buildpath now = [%s]\n", FnFilter1(buildpath)));
return MPN_OK;
} /* 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",
FnFilter1(pathcomp)));
free(buildpath);
buildpath = end = (char *)NULL;
return MPN_OK;
}
/*---------------------------------------------------------------------------
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", FnFilter1(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';
Info(slide, 0x201, ((char *)slide,
"checkdir warning: path too long; truncating\n\
%s\n -> %s\n",
FnFilter1(G.filename), FnFilter2(buildpath)));
return MPN_INF_TRUNC; /* filename truncated */
}
}
strcat(buildpath, rootdisk);
Trace((stderr, "buildpath now = [%s]\n", FnFilter1(buildpath)));
/* could check for existence here, prompt for new name... */
return MPN_OK;
}
/*---------------------------------------------------------------------------
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 "));
#ifdef ACORN_FTYPE_NFS
if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+
(uO.acorn_nfs_ext ? 5 : 1)))
#else
if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+1))
#endif
== (char *)NULL)
return MPN_NOMEM;
if ((rootlen > 0) && !renamed_fullpath) {
strcpy(buildpath, rootpath);
end = buildpath + rootlen;
} else {
*buildpath = '\0';
end = buildpath;
}
Trace((stderr, "[%s]\n", FnFilter1(buildpath)));
return MPN_OK;
}
/*---------------------------------------------------------------------------
ROOT: if appropriate, store the path in rootpath and create it if
necessary; 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 (!defined(SFX) || defined(SFX_EXDIR))
if (FUNCTION == ROOT) {
if (pathcomp == (char *)NULL) {
rootlen = 0;
return MPN_OK;
}
if (rootlen > 0) /* rootpath was already set, nothing to do */
return MPN_OK;
if ((rootlen = strlen(pathcomp)) > 0) {
int prepend_slash = 0;
char *tmproot, *p;
if (*pathcomp == ':') {
preprend_slash = 1;
rootlen++;
}
if ((tmproot = (char *)malloc(rootlen+2)) == (char *)NULL) {
rootlen = 0;
return MPN_NOMEM;
}
if (prepend_slash)
strcpy(tmproot, "/");
else
*tmproot = '\0';
strcat(tmproot, pathcomp);
Trace((stderr, "initializing root path to [%s]\n",
FnFilter1(tmproot)));
if (tmproot[rootlen-1] == '/') {
tmproot[--rootlen] = '\0';
}
if (rootlen > 0 && (SSTAT(tmproot, &G.statbuf) ||
!S_ISDIR(G.statbuf.st_mode)))
{ /* path does not exist */
if (!G.create_dirs /* || iswild(tmproot) */ ) {
free(tmproot);
rootlen = 0;
/* skip (or treat as stored file) */
return MPN_INF_SKIP;
}
/* create the directory (could add loop here scanning tmproot
* to create more than one level, but why really necessary?) */
if (mkdir(tmproot) == -1) {
Info(slide, 1, ((char *)slide,
"checkdir: cannot create extraction directory: %s\n",
FnFilter1(tmproot)));
free(tmproot);
rootlen = 0;
/* path didn't exist, tried to create, and failed: */
/* file exists, or 2+ subdir levels required */
return MPN_ERR_SKIP;
}
}
/* split rootpath in path and disk */
if ((p = strchr(tmproot, ':')) != NULL) {
strncpy(rootdisk, p, 2);
rootdisk[2] = '\0';
*p = '\0';
rootlen = p - tmproot;
} else
rootdisk[0] = '\0';
if (rootpath[rootlen - 1] != '/') {
rootpath[rootlen++] = '/';
rootpath[rootlen] = '\0';
}
if ((rootpath = (char *)realloc(tmproot, rootlen+1)) == NULL) {
free(tmproot);
rootlen = 0;
return MPN_NOMEM;
}
Trace((stderr, "rootpath now = [%s], rootdisk now = [%s]\n",
FnFilter1(rootpath), FnFilter2(rootdisk)));
}
return MPN_OK;
}
#endif /* !SFX || SFX_EXDIR */
/*---------------------------------------------------------------------------
END: free rootpath, immediately prior to program exit.
---------------------------------------------------------------------------*/
if (FUNCTION == END) {
Trace((stderr, "freeing rootpath\n"));
if (rootlen > 0) {
free(rootpath);
rootlen = 0;
}
return MPN_OK;
}
return MPN_INVALID; /* should never reach */
} /* end function checkdir() */
#ifdef MORE
/**************************/
/* Function screenlines() */
/**************************/
int screenlines()
{
return getpl(27) + 1;
}
#endif /* MORE */
#if (!defined(MTS) || defined(SET_DIR_ATTRIB))
static void get_extattribs OF((__GPRO__ iztimes *pzt));
static int get_extattribs(__G__ pzt)
__GDEF
iztimes *pzt;
{
/*---------------------------------------------------------------------------
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. If we have a Unix extra field, however,
we're laughing: both mtime and atime are ours.
---------------------------------------------------------------------------*/
#ifdef USE_EF_UT_TIME
unsigned eb_izux_flg;
eb_izux_flg = (G.extra_field ? ef_scan_for_izux(G.extra_field,
G.lrec.extra_field_length, 0, G.lrec.last_mod_dos_datetime,
#ifdef IZ_CHECK_TZ
(G.tz_is_valid ? pzt : NULL),
#else
pzt,
#endif
z_uidgid) : 0);
if (eb_izux_flg & EB_UT_FL_MTIME) {
TTrace((stderr, "\nget_extattribs: Unix e.f. modif. time = %ld\n",
pzt->mtime));
} else {
pzt->mtime = dos_to_unix_time(G.lrec.last_mod_dos_datetime);
}
if (eb_izux_flg & EB_UT_FL_ATIME) {
TTrace((stderr, "get_extattribs: Unix e.f. access time = %ld\n",
pzt->atime));
} else {
pzt->atime = pzt->mtime;
TTrace((stderr, "\nget_extattribs: modification/access times = %ld\n",
pzt->mtime));
}
#else
pzt->mtime = dos_to_unix_time(G.lrec.last_mod_dos_datetime);
pzt->atime = pzt->mtime;
#endif
}
#endif /* !MTS || SET_DIR_ATTRIB */
#ifndef MTS
/****************************/
/* Function close_outfile() */
/****************************/
void close_outfile(__G) /* GRR: change to return PK-style warning level */
__GDEF
{
union {
iztimes t3; /* mtime, atime, ctime */
ztimbuf t2; /* modtime, actime */
} zt;
/*---------------------------------------------------------------------------
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.
---------------------------------------------------------------------------*/
fclose(G.outfile);
get_extattribs(__G__ &(zt.t3));
/* set the file's access and modification times */
if (utime(G.filename, &(zt.t2))) {
if (uO.qflag)
Info(slide, 0x201, ((char *)slide,
"warning: cannot set times for %s\n", FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide,
" (warning) cannot set times"));
}
/*---------------------------------------------------------------------------
Change the file permissions from default ones to those stored in the
zipfile.
---------------------------------------------------------------------------*/
if (chmod(G.filename, 0xffff & G.pInfo->file_attr))
perror("chmod (file attributes) error");
/*---------------------------------------------------------------------------
Change the file structure and set native .
---------------------------------------------------------------------------*/
if (isv2_3()) {
chorg(G.filename, G.extra_field[9]);
chlen(G.filename,
(ush) G.extra_field[10] | ((ush) G.extra_field[11] << 8),
(ush) G.extra_field[12] | ((ush) G.extra_field[13] << 8));
chgrow(G.filename, G.extra_field[14]);
}
#if OLD_THEOS_EXTRA
else if (isv2_0()) {
chorg(G.filename, G.pInfo->file_attr & 0xFF);
chlen(G.filename, v2_0extra()->reclen, v2_0extra()->keylen);
chgrow(G.filename, v2_0extra()->filegrow);
}
#endif
} /* end function close_outfile() */
#endif /* !MTS */
#ifdef SET_DIR_ATTRIB
/* messages of code for setting directory attributes */
static ZCONST char Far DirlistUidGidFailed[] =
"warning: cannot set UID %d and/or GID %d for %s\n";
static ZCONST char Far DirlistUtimeFailed[] =
"warning: cannot set modification, access times for %s\n";
# ifndef NO_CHMOD
static ZCONST char Far DirlistChmodFailed[] =
"warning: cannot set permissions for %s\n";
# endif
int defer_dir_attribs(__G__ pd)
__GDEF
direntry **pd;
{
uxdirattr *d_entry;
d_entry = (uxdirattr *)malloc(sizeof(uxdirattr) + strlen(G.filename));
*pd = (direntry *)d_entry;
if (d_entry == (uxdirattr *)NULL) {
return PK_MEM;
}
d_entry->fn = d_entry->fnbuf;
strcpy(d_entry->fn, G.filename);
d_entry->perms = G.pInfo->file_attr;
get_extattribs(__G__ &(d_entry->u.t3));
return PK_OK;
} /* end function defer_dir_attribs() */
int set_direc_attribs(__G__ d)
__GDEF
direntry *d;
{
int errval = PK_OK;
if (utime(d->fn, &UxAtt(d)->u.t2)) {
Info(slide, 0x201, ((char *)slide,
LoadFarString(DirlistUtimeFailed), FnFilter1(d->fn)));
if (!errval)
errval = PK_WARN;
}
if (chmod(d->fn, 0xffff & UxAtt(d)->perms)) {
Info(slide, 0x201, ((char *)slide,
LoadFarString(DirlistChmodFailed), FnFilter1(d->fn)));
/* perror("chmod (file attributes) error"); */
if (!errval)
errval = PK_WARN;
}
return errval;
} /* end function set_direc_attribs() */
#endif /* SET_DIR_ATTRIB */
#ifdef TIMESTAMP
/***************************/
/* Function stamp_file() */
/***************************/
int stamp_file(fname, modtime)
ZCONST char *fname;
time_t modtime;
{
ztimbuf tp;
tp.modtime = tp.actime = modtime;
return (utime(fname, &tp));
} /* end function stamp_file() */
#endif /* TIMESTAMP */
#ifndef SFX
/************************/
/* Function version() */
/************************/
void version(__G)
__GDEF
{
char buf1[40];
extern char Far CompiledWith[];
sprintf(slide, CompiledWith,
"THEOS C ","5.28", "THEOS ", "4.x", " on ", __DATE__);
(*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0);
} /* end function version() */
#endif /* !SFX */
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