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/*
Copyright (c) 1990-2008 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
*/
/*---------------------------------------------------------------------------
atheos.c by Ruslan Nickolaev (nruslan@hotbox.ru)
AtheOS-specific routines for use with Info-ZIP's UnZip 5.51 and later.
(based on beos/beos.c and unix/unix.c)
Contains: do_wild() <-- generic enough to put in fileio.c?
mapattr()
mapname()
checkdir()
close_outfile()
defer_dir_attribs()
set_direc_attribs()
stamp_file()
version()
scanAtheOSexfield()
set_file_attrs()
setAtheOSexfield()
---------------------------------------------------------------------------*/
#define UNZIP_INTERNAL
#include "unzip.h"
#include "atheos.h"
#include <errno.h> /* Just make sure we've got a few things... */
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <atheos/fs_attribs.h>
static unsigned filtattr OF((__GPRO__ unsigned perms));
static uch *scanAtheOSexfield OF((const uch *ef_ptr, unsigned ef_len));
static int set_file_attrs( const char *, const unsigned char *, const off_t );
static void setAtheOSexfield OF((const char *path, uch *extra_field));
#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 */
int have_uidgid; /* flag */
ulg uidgid[2];
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 */
#ifndef SFX
/**********************/
/* 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 */
{
/* these statics are now declared in SYSTEM_SPECIFIC_GLOBALS in athcfg.h:
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 (!G.notfirstcall) { /* first call: must initialize everything */
G.notfirstcall = TRUE;
if (!iswild(wildspec)) {
strncpy(G.matchname, wildspec, FILNAMSIZ);
G.matchname[FILNAMSIZ-1] = '\0';
G.have_dirname = FALSE;
G.wild_dir = NULL;
return G.matchname;
}
/* break the wildspec into a directory part and a wildcard filename */
if ((G.wildname = (ZCONST char *)strrchr(wildspec, '/')) == NULL) {
G.dirname = ".";
G.dirnamelen = 1;
G.have_dirname = FALSE;
G.wildname = wildspec;
unzip-6.0/atheos/atheos.c view on Meta::CPAN
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 *)G.wild_dir)) != (struct dirent *)NULL) {
Trace((stderr, "do_wild: readdir returns %s\n",
FnFilter1(file->d_name)));
if (file->d_name[0] == '.' && G.wildname[0] != '.')
continue; /* Unix: '*' and '?' do not match leading dot */
if (match(file->d_name, G.wildname, 0 WISEP)) { /* 0 == case sens. */
Trace((stderr, "do_wild: match() succeeds\n"));
if (G.have_dirname) {
/* strcpy(G.matchname, G.dirname); */
strcpy(G.matchname+G.dirnamelen, file->d_name);
} else
strcpy(G.matchname, file->d_name);
return G.matchname;
}
}
closedir((DIR *)G.wild_dir); /* at least one entry read; nothing left */
G.wild_dir = (zvoid *)NULL;
G.notfirstcall = FALSE; /* reset for new wildspec */
if (G.have_dirname)
free(G.dirname);
return (char *)NULL;
} /* end function do_wild() */
#endif /* !SFX */
#ifndef S_ISUID
# define S_ISUID 0004000 /* set user id on execution */
#endif
#ifndef S_ISGID
# define S_ISGID 0002000 /* set group id on execution */
#endif
#ifndef S_ISVTX
# define S_ISVTX 0001000 /* save swapped text even after use */
#endif
/************************/
/* Function filtattr() */
/************************/
/* This is used to clear or keep the SUID and GID bits on file permissions.
* It's possible that a file in an archive could have one of these bits set
* and, unknown to the person unzipping, could allow others to execute the
* file as the user or group. The new option -K bypasses this check.
*/
static unsigned filtattr(__G__ perms)
__GDEF
unsigned perms;
{
/* keep setuid/setgid/tacky perms? */
if (!uO.K_flag)
perms &= ~(S_ISUID | S_ISGID | S_ISVTX);
return (0xffff & perms);
} /* end function filtattr() */
/**********************/
/* Function mapattr() */
/**********************/
int mapattr(__G)
__GDEF
{
int r;
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 THEOS_:
tmp &= 0xF1FFFFFFL;
if ((tmp & 0xF0000000L) != 0x40000000L)
tmp &= 0x01FFFFFFL; /* not a dir, mask all ftype bits */
else
tmp &= 0x41FFFFFFL; /* leave directory bit as set */
/* fall through! */
case ATHEOS_:
case UNIX_:
case VMS_:
case ACORN_:
case ATARI_:
case BEOS_:
case QDOS_:
case TANDEM_:
r = FALSE;
G.pInfo->file_attr = (unsigned)(tmp >> 16);
if (G.pInfo->file_attr == 0 && G.extra_field) {
/* 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 of the e.f.
* mode value IS already provided!)
*/
unzip-6.0/atheos/atheos.c view on Meta::CPAN
}
strcpy(tmproot, pathcomp);
if (tmproot[G.rootlen-1] == '/') {
tmproot[--G.rootlen] = '\0';
}
if (G.rootlen > 0 && (SSTAT(tmproot, &G.statbuf) ||
!S_ISDIR(G.statbuf.st_mode)))
{ /* path does not exist */
if (!G.create_dirs /* || iswild(tmproot) */ ) {
free(tmproot);
G.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, 0777) == -1) {
Info(slide, 1, ((char *)slide,
"checkdir: cannot create extraction directory: %s\n",
FnFilter1(tmproot)));
free(tmproot);
G.rootlen = 0;
/* path didn't exist, tried to create, and failed: */
/* file exists, or 2+ subdir levels required */
return MPN_ERR_SKIP;
}
}
tmproot[G.rootlen++] = '/';
tmproot[G.rootlen] = '\0';
if ((G.rootpath = (char *)realloc(tmproot, G.rootlen+1)) == NULL) {
free(tmproot);
G.rootlen = 0;
return MPN_NOMEM;
}
Trace((stderr, "rootpath now = [%s]\n", FnFilter1(G.rootpath)));
}
return MPN_OK;
}
#endif /* !SFX || SFX_EXDIR */
/*---------------------------------------------------------------------------
END: free rootpath, immediately prior to program exit.
---------------------------------------------------------------------------*/
if (FUNCTION == END) {
Trace((stderr, "freeing rootpath\n"));
if (G.rootlen > 0) {
free(G.rootpath);
G.rootlen = 0;
}
return MPN_OK;
}
return MPN_INVALID; /* should never reach */
} /* end function checkdir() */
static int get_extattribs OF((__GPRO__ iztimes *pzt, ulg z_uidgid[2]));
static int get_extattribs(__G__ pzt, z_uidgid)
__GDEF
iztimes *pzt;
ulg z_uidgid[2];
{
/*---------------------------------------------------------------------------
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. On the other hand, we
then have to check for restoration of UID/GID.
---------------------------------------------------------------------------*/
int have_uidgid_flg;
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));
}
/* if -X option was specified and we have UID/GID info, restore it */
have_uidgid_flg =
#ifdef RESTORE_UIDGID
(uO.X_flag && (eb_izux_flg & EB_UX2_VALID));
#else
0;
#endif
return have_uidgid_flg;
}
/****************************/
/* Function close_outfile() */
/****************************/
void close_outfile(__G) /* GRR: change to return PK-style warning level */
__GDEF
{
union {
iztimes t3; /* mtime, atime, ctime */
struct utimbuf t2; /* modtime, actime */
} zt;
ulg z_uidgid[2];
int have_uidgid_flg;
/*---------------------------------------------------------------------------
If symbolic links are supported, allocate storage for a symlink control
structure, put the uncompressed "data" and other required info in it, and
add the structure to the "deferred symlinks" chain. 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 (G.symlnk) {
extent ucsize = (extent)G.lrec.ucsize;
unsigned AtheOSef_len = 0;
extent slnk_entrysize;
uch *AtheOS_exfld = NULL;
slinkentry *slnk_entry;
if (!uO.J_flag) {
/* attributes for symlinks are supported too */
AtheOS_exfld = scanAtheOSexfield(G.extra_field,
G.lrec.extra_field_length);
if (AtheOS_exfld) {
AtheOSef_len = makeword(EB_LEN + AtheOS_exfld) + EB_HEADSIZE;
}
}
/* size of the symlink entry is the sum of
* (struct size (includes 1st '\0') + 1 additional trailing '\0'),
* system specific attribute data size (might be 0),
* and the lengths of name and link target.
*/
slnk_entrysize = (sizeof(slinkentry) + 1) + AtheOSef_len +
ucsize + strlen(G.filename);
if (slnk_entrysize < ucsize) {
Info(slide, 0x201, ((char *)slide,
"warning: symbolic link (%s) failed: mem alloc overflow\n",
FnFilter1(G.filename)));
fclose(G.outfile);
return;
}
if ((slnk_entry = (slinkentry *)malloc(slnk_entrysize)) == NULL) {
Info(slide, 0x201, ((char *)slide,
"warning: symbolic link (%s) failed: no mem\n",
FnFilter1(G.filename)));
fclose(G.outfile);
return;
}
slnk_entry->next = NULL;
slnk_entry->targetlen = ucsize;
slnk_entry->attriblen = AtheOSef_len;
slnk_entry->target = slnk_entry->buf + AtheOSef_len;
slnk_entry->fname = slnk_entry->target + ucsize + 1;
strcpy(slnk_entry->fname, G.filename);
if (AtheOSef_len > 0)
/* AtheOS_exfld should not be NULL because AtheOSef_len > 0 */
memcpy(slnk_entry->buf, AtheOS_exfld, AtheOSef_len);
/* move back to the start of the file to re-read the "link data" */
rewind(G.outfile);
if (fread(slnk_entry->target, 1, ucsize, G.outfile) != ucsize)
{
Info(slide, 0x201, ((char *)slide,
"warning: symbolic link (%s) failed\n",
FnFilter1(G.filename)));
free(slnk_entry);
fclose(G.outfile);
return;
}
fclose(G.outfile); /* close "link" file for good... */
slnk_entry->target[ucsize] = '\0';
if (QCOND2)
Info(slide, 0, ((char *)slide, "-> %s ",
FnFilter1(slnk_entry->target)));
/* add this symlink record to the list of deferred symlinks */
if (G.slink_last != NULL)
G.slink_last->next = slnk_entry;
else
G.slink_head = slnk_entry;
G.slink_last = slnk_entry;
return;
}
#endif /* SYMLINKS */
fclose(G.outfile);
/* handle the AtheOS extra field if present */
if (!uO.J_flag) {
void *ptr = scanAtheOSexfield(G.extra_field,
G.lrec.extra_field_length);
if (ptr) {
setAtheOSexfield(G.filename, ptr);
}
}
have_uidgid_flg = get_extattribs(__G__ &(zt.t3), z_uidgid);
/* if -X option was specified and we have UID/GID info, restore it */
if (have_uidgid_flg) {
TTrace((stderr, "close_outfile: restoring Unix UID/GID info\n"));
if (chown(G.filename, (uid_t)z_uidgid[0], (gid_t)z_uidgid[1]))
{
if (uO.qflag)
Info(slide, 0x201, ((char *)slide,
"warning: cannot set UID %lu and/or GID %lu for %s\n",
z_uidgid[0], z_uidgid[1], FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide,
" (warning) cannot set UID %lu and/or GID %lu",
z_uidgid[0], z_uidgid[1]));
}
}
/* skip restoring time stamps on user's request */
if (uO.D_flag <= 1) {
/* 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.
---------------------------------------------------------------------------*/
#ifndef NO_CHMOD
if (chmod(G.filename, filtattr(__G__ G.pInfo->file_attr)))
perror("chmod (file attributes) error");
#endif
} /* end function close_outfile() */
#ifdef SYMLINKS
int set_symlnk_attribs(__G__ slnk_entry)
__GDEF
slinkentry *slnk_entry;
{
if (slnk_entry->attriblen > 0)
setAtheOSexfield(slnk_entry->fname, (uch *)slnk_entry->buf);
/* currently, no error propagation... */
return PK_OK;
}
#endif /* SYMLINKS */
#ifdef SET_DIR_ATTRIB
/* messages of code for setting directory attributes */
static ZCONST char Far DirlistUidGidFailed[] =
"warning: cannot set UID %lu and/or GID %lu 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;
d_entry->have_uidgid = get_extattribs(__G__ &(d_entry->u.t3),
d_entry->uidgid);
return PK_OK;
} /* end function defer_dir_attribs() */
int set_direc_attribs(__G__ d)
__GDEF
direntry *d;
{
int errval = PK_OK;
if (UxAtt(d)->have_uidgid &&
chown(UxAtt(d)->fn, (uid_t)UxAtt(d)->uidgid[0],
(gid_t)UxAtt(d)->uidgid[1]))
{
Info(slide, 0x201, ((char *)slide,
LoadFarString(DirlistUidGidFailed),
UxAtt(d)->uidgid[0], UxAtt(d)->uidgid[1], FnFilter1(d->fn)));
if (!errval)
errval = PK_WARN;
}
/* Skip restoring directory time stamps on user' request. */
if (uO.D_flag <= 0) {
/* restore directory timestamps */
if (utime(d->fn, &UxAtt(d)->u.t2)) {
Info(slide, 0x201, ((char *)slide,
LoadFarString(DirlistUtimeFailed), FnFilter1(d->fn)));
if (!errval)
errval = PK_WARN;
}
}
#ifndef NO_CHMOD
if (chmod(d->fn, filtattr(__G__ UxAtt(d)->perms))) {
Info(slide, 0x201, ((char *)slide,
LoadFarString(DirlistChmodFailed), FnFilter1(d->fn)));
/* perror("chmod (file attributes) error"); */
if (!errval)
errval = PK_WARN;
}
#endif /* !NO_CHMOD */
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
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