/*
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
*/
/*---------------------------------------------------------------------------
unix.c
Unix-specific routines for use with Info-ZIP's UnZip 5.41 and later.
Contains: readdir()
do_wild() <-- generic enough to put in fileio.c?
mapattr()
mapname()
checkdir()
mkdir()
close_outfile()
defer_dir_attribs()
set_direc_attribs()
stamp_file()
version()
---------------------------------------------------------------------------*/
#define UNZIP_INTERNAL
#include "unzip.h"
#ifdef SCO_XENIX
# define SYSNDIR
#else /* SCO Unix, AIX, DNIX, TI SysV, Coherent 4.x, ... */
# if defined(__convexc__) || defined(SYSV) || defined(CRAY) || defined(BSD4_4)
# define DIRENT
# endif
#endif
#if defined(_AIX) || defined(__mpexl)
# define DIRENT
#endif
#ifdef COHERENT
# if defined(_I386) || (defined(__COHERENT__) && (__COHERENT__ >= 0x420))
# define DIRENT
# endif
#endif
#ifdef _POSIX_VERSION
# ifndef DIRENT
# define DIRENT
# 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 */
#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 */
ush 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 */
static unsigned filtattr OF((__GPRO__ unsigned perms));
#ifndef SFX
#ifdef NO_DIR /* for AT&T 3B1 */
#define opendir(path) fopen(path,"r")
#define closedir(dir) fclose(dir)
typedef FILE DIR;
typedef struct zdir {
FILE *dirhandle;
struct dirent *entry;
} DIR
DIR *opendir OF((ZCONST char *dirspec));
void closedir OF((DIR *dirp));
struct dirent *readdir OF((DIR *dirp));
DIR *opendir(dirspec)
ZCONST char *dirspec;
{
DIR *dirp;
if ((dirp = malloc(sizeof(DIR)) != NULL) {
if ((dirp->dirhandle = fopen(dirspec, "r")) == NULL) {
free(dirp);
dirp = NULL;
}
}
return dirp;
}
void closedir(dirp)
DIR *dirp;
{
fclose(dirp->dirhandle);
free(dirp);
}
/*
* Apparently originally by Rich Salz.
* Cleaned up and modified by James W. Birdsall.
*/
struct dirent *readdir(dirp)
DIR *dirp;
{
if (dirp == NULL)
return NULL;
for (;;)
if (fread(&(dirp->entry), sizeof (struct dirent), 1,
dirp->dirhandle) == 0)
return (struct dirent *)NULL;
else if ((dirp->entry).d_ino)
return &(dirp->entry);
} /* end function readdir() */
#endif /* NO_DIR */
/**********************/
/* 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 unxcfg.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;
} else {
++G.wildname; /* point at character after '/' */
G.dirnamelen = G.wildname - wildspec;
if ((G.dirname = (char *)malloc(G.dirnamelen+1)) == (char *)NULL) {
Info(slide, 0x201, ((char *)slide,
"warning: cannot allocate wildcard buffers\n"));
strncpy(G.matchname, wildspec, FILNAMSIZ);
G.matchname[FILNAMSIZ-1] = '\0';
return G.matchname; /* but maybe filespec was not a wildcard */
}
strncpy(G.dirname, wildspec, G.dirnamelen);
G.dirname[G.dirnamelen] = '\0'; /* terminate for strcpy below */
G.have_dirname = TRUE;
}
if ((G.wild_dir = (zvoid *)opendir(G.dirname)) != (zvoid *)NULL) {
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.*/
/* skip "." and ".." directory entries */
strcmp(file->d_name, ".") && strcmp(file->d_name, "..")) {
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;
}
}
/* if we get to here directory is exhausted, so close it */
closedir((DIR *)G.wild_dir);
G.wild_dir = (zvoid *)NULL;
}
Trace((stderr, "do_wild: opendir(%s) returns NULL\n",
FnFilter1(G.dirname)));
/* return the raw wildspec in case that works (e.g., directory not
* searchable, but filespec was not wild and file is readable) */
strncpy(G.matchname, wildspec, FILNAMSIZ);
G.matchname[FILNAMSIZ-1] = '\0';
return G.matchname;
}
/* last time through, might have failed opendir but returned raw wildspec */
if ((DIR *)G.wild_dir == (DIR *)NULL) {
G.notfirstcall = FALSE; /* nothing left--reset for new wildspec */
if (G.have_dirname)
free(G.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 *)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
{
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 UNIX_:
case VMS_:
case ACORN_:
case ATARI_:
case ATHEOS_:
case BEOS_:
case QDOS_:
case TANDEM_:
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 of 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": */
umask( (int)(tmp=umask(0)) ); /* apply mask to expanded r/w(/x) perms */
G.pInfo->file_attr &= ~tmp;
return 0;
} /* end function mapattr() */
/************************/
/* 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);
G.created_dir = FALSE; /* not yet */
/* user gave full pathname: don't prepend rootpath */
G.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 __CYGWIN__ /* Cygwin runs on Win32, apply FAT/NTFS filename rules */
case ':': /* drive spec not stored, so no colon allowed */
case '\\': /* '\\' may come as normal filename char (not */
case '<': /* dir sep char!) from unix-like file system */
case '>': /* no redirection symbols allowed either */
case '|': /* no pipe signs allowed */
case '"': /* no double quotes allowed */
case '?': /* no wildcards allowed */
case '*':
*pp++ = '_'; /* these rules apply equally to FAT and NTFS */
break;
#endif
case ';': /* VMS version (or DEC-20 attrib?) */
lastsemi = pp;
*pp++ = ';'; /* keep for now; remove VMS ";##" */
break; /* later, if requested */
#ifdef ACORN_FTYPE_NFS
case ',': /* NFS filetype extension */
lastcomma = pp;
*pp++ = ','; /* keep for now; may need to remove */
break; /* later, if requested */
#endif
#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 */
/* 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 (G.created_dir) {
if (QCOND2) {
Info(slide, 0, ((char *)slide, " creating: %s\n",
FnFilter1(G.filename)));
}
#ifndef NO_CHMOD
/* set approx. dir perms (make sure can still read/write in dir) */
if (chmod(G.filename, filtattr(__G__ G.pInfo->file_attr) | 0700))
perror("chmod (directory attributes) error");
#endif
/* 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 */
/* if not saving them, remove VMS version numbers (appended ";###") */
if (!uO.V_flag && lastsemi) {
pp = lastsemi + 1;
while (isdigit((uch)(*pp)))
++pp;
if (*pp == '\0') /* only digits between ';' and end: nuke */
*lastsemi = '\0';
}
#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 *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 ((*G.end = *pathcomp++) != '\0')
++G.end;
#ifdef SHORT_NAMES /* path components restricted to 14 chars, typically */
if ((G.end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
*(G.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. */
/* next check: need to append '/', at least one-char name, '\0' */
if ((G.end-G.buildpath) > FILNAMSIZ-3)
too_long = TRUE; /* check if extracting dir? */
if (SSTAT(G.buildpath, &G.statbuf)) { /* path doesn't exist */
if (!G.create_dirs) { /* told not to create (freshening) */
free(G.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(G.buildpath)));
free(G.buildpath);
/* no room for filenames: fatal */
return MPN_ERR_TOOLONG;
}
if (mkdir(G.buildpath, 0777) == -1) { /* create the directory */
Info(slide, 1, ((char *)slide,
"checkdir error: cannot create %s\n\
unable to process %s.\n",
FnFilter2(G.buildpath), FnFilter1(G.filename)));
free(G.buildpath);
/* path didn't exist, tried to create, failed */
return MPN_ERR_SKIP;
}
G.created_dir = TRUE;
} else if (!S_ISDIR(G.statbuf.st_mode)) {
Info(slide, 1, ((char *)slide,
"checkdir error: %s exists but is not directory\n\
unable to process %s.\n",
FnFilter2(G.buildpath), FnFilter1(G.filename)));
free(G.buildpath);
/* path existed but wasn't dir */
return MPN_ERR_SKIP;
}
if (too_long) {
Info(slide, 1, ((char *)slide,
"checkdir error: path too long: %s\n", FnFilter1(G.buildpath)));
free(G.buildpath);
/* no room for filenames: fatal */
return MPN_ERR_TOOLONG;
}
*G.end++ = '/';
*G.end = '\0';
Trace((stderr, "buildpath now = [%s]\n", FnFilter1(G.buildpath)));
return MPN_OK;
} /* end if (FUNCTION == APPEND_DIR) */
/*---------------------------------------------------------------------------
GETPATH: copy full path to the string pointed at by pathcomp, and free
G.buildpath.
---------------------------------------------------------------------------*/
if (FUNCTION == GETPATH) {
strcpy(pathcomp, G.buildpath);
Trace((stderr, "getting and freeing path [%s]\n",
FnFilter1(pathcomp)));
free(G.buildpath);
G.buildpath = G.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 ((*G.end = *pathcomp++) != '\0') {
++G.end;
#ifdef SHORT_NAMES /* truncate name at 14 characters, typically */
if ((G.end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
*(G.end = old_end + FILENAME_MAX) = '\0';
#endif
if ((G.end-G.buildpath) >= FILNAMSIZ) {
*--G.end = '\0';
Info(slide, 0x201, ((char *)slide,
"checkdir warning: path too long; truncating\n\
%s\n -> %s\n",
FnFilter1(G.filename), FnFilter2(G.buildpath)));
return MPN_INF_TRUNC; /* filename truncated */
}
}
Trace((stderr, "buildpath now = [%s]\n", FnFilter1(G.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 ((G.buildpath = (char *)malloc(strlen(G.filename)+G.rootlen+
(uO.acorn_nfs_ext ? 5 : 1)))
#else
if ((G.buildpath = (char *)malloc(strlen(G.filename)+G.rootlen+1))
#endif
== (char *)NULL)
return MPN_NOMEM;
if ((G.rootlen > 0) && !G.renamed_fullpath) {
strcpy(G.buildpath, G.rootpath);
G.end = G.buildpath + G.rootlen;
} else {
*G.buildpath = '\0';
G.end = G.buildpath;
}
Trace((stderr, "[%s]\n", FnFilter1(G.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) {
Trace((stderr, "initializing root path to [%s]\n",
FnFilter1(pathcomp)));
if (pathcomp == (char *)NULL) {
G.rootlen = 0;
return MPN_OK;
}
if (G.rootlen > 0) /* rootpath was already set, nothing to do */
return MPN_OK;
if ((G.rootlen = strlen(pathcomp)) > 0) {
char *tmproot;
if ((tmproot = (char *)malloc(G.rootlen+2)) == (char *)NULL) {
G.rootlen = 0;
return MPN_NOMEM;
}
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() */
#ifdef NO_MKDIR
/********************/
/* Function mkdir() */
/********************/
int mkdir(path, mode)
ZCONST 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 */
#if (!defined(MTS) || defined(SET_DIR_ATTRIB))
static int get_extattribs OF((__GPRO__ iztimes *pzt, ush z_uidgid[2]));
static int get_extattribs(__G__ pzt, z_uidgid)
__GDEF
iztimes *pzt;
ush 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;
}
#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;
ush z_uidgid[2];
int have_uidgid_flg;
fclose(G.outfile);
/*---------------------------------------------------------------------------
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) {
unsigned ucsize = (unsigned)G.lrec.ucsize;
extent slnk_entrysize = sizeof(slinkentry) + ucsize +
strlen(G.filename);
slinkentry *slnk_entry;
if ((unsigned)slnk_entrysize < ucsize) {
Info(slide, 0x201, ((char *)slide,
"warning: symbolic link (%s) failed: mem alloc overflow\n",
FnFilter1(G.filename)));
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)));
return;
}
slnk_entry->next = NULL;
slnk_entry->targetlen = ucsize;
slnk_entry->attriblen = 0; /* don't set attributes for symlinks */
slnk_entry->target = slnk_entry->buf;
slnk_entry->fname = slnk_entry->target + ucsize + 1;
strcpy(slnk_entry->fname, G.filename);
/* reopen the "link data" file for reading */
G.outfile = fopen(G.filename, FOPR);
if (!G.outfile ||
fread(slnk_entry->target, 1, ucsize, G.outfile) != (int)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 */
#ifdef QLZIP
if (G.extra_field) {
static void qlfix OF((__GPRO__ uch *ef_ptr, unsigned ef_len));
qlfix(__G__ G.extra_field, G.lrec.extra_field_length);
}
#endif
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 %d and/or GID %d for %s\n",
z_uidgid[0], z_uidgid[1], FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide,
" (warning) cannot set UID %d and/or GID %d",
z_uidgid[0], z_uidgid[1]));
}
}
/* set the file's access and modification times */
if (utime(G.filename, &(zt.t2))) {
#ifdef AOS_VS
if (uO.qflag)
Info(slide, 0x201, ((char *)slide, "... cannot set time for %s\n",
FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide, "... cannot set time"));
#else
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"));
#endif /* ?AOS_VS */
}
/*---------------------------------------------------------------------------
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() */
#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;
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;
}
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
{
#if (defined(__GNUC__) && defined(NX_CURRENT_COMPILER_RELEASE))
char cc_namebuf[40];
char cc_versbuf[40];
#else
#if (defined(CRAY) && defined(_RELEASE))
char cc_versbuf[40];
#endif
#endif
#if ((defined(CRAY) || defined(cray)) && defined(_UNICOS))
char os_namebuf[40];
#else
#if defined(__NetBSD__)
char os_namebuf[40];
#endif
#endif
/* Pyramid, NeXT have problems with huge macro expansion, too: no Info() */
sprintf((char *)slide, LoadFarString(CompiledWith),
#ifdef __GNUC__
# ifdef NX_CURRENT_COMPILER_RELEASE
(sprintf(cc_namebuf, "NeXT DevKit %d.%02d ",
NX_CURRENT_COMPILER_RELEASE/100, NX_CURRENT_COMPILER_RELEASE%100),
cc_namebuf),
(strlen(__VERSION__) > 8)? "(gcc)" :
(sprintf(cc_versbuf, "(gcc %s)", __VERSION__), cc_versbuf),
# else
"gcc ", __VERSION__,
# endif
#else
# if defined(CRAY) && defined(_RELEASE)
"cc ", (sprintf(cc_versbuf, "version %d", _RELEASE), cc_versbuf),
# else
# ifdef __VERSION__
# ifndef IZ_CC_NAME
# define IZ_CC_NAME "cc "
# endif
IZ_CC_NAME, __VERSION__
# else
# ifndef IZ_CC_NAME
# define IZ_CC_NAME "cc"
# endif
IZ_CC_NAME, "",
# endif
# endif
#endif /* ?__GNUC__ */
#ifndef IZ_OS_NAME
# define IZ_OS_NAME "Unix"
#endif
IZ_OS_NAME,
#if defined(sgi) || defined(__sgi)
" (Silicon Graphics IRIX)",
#else
#ifdef sun
# ifdef sparc
# ifdef __SVR4
" (Sun SPARC/Solaris)",
# else /* may or may not be SunOS */
" (Sun SPARC)",
# endif
# else
# if defined(sun386) || defined(i386)
" (Sun 386i)",
# else
# if defined(mc68020) || defined(__mc68020__)
" (Sun 3)",
# else /* mc68010 or mc68000: Sun 2 or earlier */
" (Sun 2)",
# endif
# endif
# endif
#else
#ifdef __hpux
" (HP/UX)",
#else
#ifdef __osf__
" (DEC OSF/1)",
#else
#ifdef _AIX
" (IBM AIX)",
#else
#ifdef aiws
" (IBM RT/AIX)",
#else
#if defined(CRAY) || defined(cray)
# ifdef _UNICOS
(sprintf(os_namebuf, " (Cray UNICOS release %d)", _UNICOS), os_namebuf),
# else
" (Cray UNICOS)",
# endif
#else
#if defined(uts) || defined(UTS)
" (Amdahl UTS)",
#else
#ifdef NeXT
# ifdef mc68000
" (NeXTStep/black)",
# else
" (NeXTStep for Intel)",
# endif
#else /* the next dozen or so are somewhat order-dependent */
#ifdef LINUX
# ifdef __ELF__
" (Linux ELF)",
# else
" (Linux a.out)",
# endif
#else
#ifdef MINIX
" (Minix)",
#else
#ifdef M_UNIX
" (SCO Unix)",
#else
#ifdef M_XENIX
" (SCO Xenix)",
#else
#ifdef __NetBSD__
# ifdef NetBSD0_8
(sprintf(os_namebuf, " (NetBSD 0.8%c)", (char)(NetBSD0_8 - 1 + 'A')),
os_namebuf),
# else
# ifdef NetBSD0_9
(sprintf(os_namebuf, " (NetBSD 0.9%c)", (char)(NetBSD0_9 - 1 + 'A')),
os_namebuf),
# else
# ifdef NetBSD1_0
(sprintf(os_namebuf, " (NetBSD 1.0%c)", (char)(NetBSD1_0 - 1 + 'A')),
os_namebuf),
# else
(BSD4_4 == 0.5)? " (NetBSD before 0.9)" : " (NetBSD 1.1 or later)",
# endif
# endif
# endif
#else
#ifdef __FreeBSD__
(BSD4_4 == 0.5)? " (FreeBSD 1.x)" : " (FreeBSD 2.0 or later)",
#else
#ifdef __bsdi__
(BSD4_4 == 0.5)? " (BSD/386 1.0)" : " (BSD/386 1.1 or later)",
#else
#ifdef __386BSD__
(BSD4_4 == 1)? " (386BSD, post-4.4 release)" : " (386BSD)",
#else
#ifdef __CYGWIN__
" (Cygwin)",
#else
#if defined(i686) || defined(__i686) || defined(__i686__)
" (Intel 686)",
#else
#if defined(i586) || defined(__i586) || defined(__i586__)
" (Intel 586)",
#else
#if defined(i486) || defined(__i486) || defined(__i486__)
" (Intel 486)",
#else
#if defined(i386) || defined(__i386) || defined(__i386__)
" (Intel 386)",
#else
#ifdef pyr
" (Pyramid)",
#else
#ifdef ultrix
# ifdef mips
" (DEC/MIPS)",
# else
# ifdef vax
" (DEC/VAX)",
# else /* __alpha? */
" (DEC/Alpha)",
# endif
# endif
#else
#ifdef gould
" (Gould)",
#else
#ifdef MTS
" (MTS)",
#else
#ifdef __convexc__
" (Convex)",
#else
#ifdef __QNX__
" (QNX 4)",
#else
#ifdef __QNXNTO__
" (QNX Neutrino)",
#else
#ifdef Lynx
" (LynxOS)",
#else
"",
#endif /* Lynx */
#endif /* QNX Neutrino */
#endif /* QNX 4 */
#endif /* Convex */
#endif /* MTS */
#endif /* Gould */
#endif /* DEC */
#endif /* Pyramid */
#endif /* 386 */
#endif /* 486 */
#endif /* 586 */
#endif /* 686 */
#endif /* Cygwin */
#endif /* 386BSD */
#endif /* BSDI BSD/386 */
#endif /* NetBSD */
#endif /* FreeBSD */
#endif /* SCO Xenix */
#endif /* SCO Unix */
#endif /* Minix */
#endif /* Linux */
#endif /* NeXT */
#endif /* Amdahl */
#endif /* Cray */
#endif /* RT/AIX */
#endif /* AIX */
#endif /* OSF/1 */
#endif /* HP/UX */
#endif /* Sun */
#endif /* SGI */
#ifdef __DATE__
" on ", __DATE__
#else
"", ""
#endif
);
(*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0);
} /* end function version() */
#endif /* !SFX */
#ifdef QLZIP
struct qdirect {
long d_length __attribute__ ((packed)); /* file length */
unsigned char d_access __attribute__ ((packed)); /* file access type */
unsigned char d_type __attribute__ ((packed)); /* file type */
long d_datalen __attribute__ ((packed)); /* data length */
long d_reserved __attribute__ ((packed));/* Unused */
short d_szname __attribute__ ((packed)); /* size of name */
char d_name[36] __attribute__ ((packed));/* name area */
long d_update __attribute__ ((packed)); /* last update */
long d_refdate __attribute__ ((packed));
long d_backup __attribute__ ((packed)); /* EOD */
};
#define LONGID "QDOS02"
#define EXTRALEN (sizeof(struct qdirect) + 8)
#define JBLONGID "QZHD"
#define JBEXTRALEN (sizeof(jbextra) - 4 * sizeof(char))
typedef struct {
char eb_header[4] __attribute__ ((packed)); /* place_holder */
char longid[8] __attribute__ ((packed));
struct qdirect header __attribute__ ((packed));
} qdosextra;
typedef struct {
char eb_header[4]; /* place_holder */
char longid[4];
struct qdirect header;
} jbextra;
/* The following two functions SH() and LG() convert big-endian short
* and long numbers into native byte order. They are some kind of
* counterpart to the generic UnZip's makeword() and makelong() functions.
*/
static ush SH(ush val)
{
uch swapbuf[2];
swapbuf[1] = (uch)(val & 0xff);
swapbuf[0] = (uch)(val >> 8);
return (*(ush *)swapbuf);
}
static ulg LG(ulg val)
{
/* convert the big-endian unsigned long number `val' to the machine
* dependant representation
*/
ush swapbuf[2];
swapbuf[1] = SH((ush)(val & 0xffff));
swapbuf[0] = SH((ush)(val >> 16));
return (*(ulg *)swapbuf);
}
static void qlfix(__G__ ef_ptr, ef_len)
__GDEF
uch *ef_ptr;
unsigned ef_len;
{
while (ef_len >= EB_HEADSIZE)
{
unsigned eb_id = makeword(EB_ID + ef_ptr);
unsigned eb_len = makeword(EB_LEN + ef_ptr);
if (eb_len > (ef_len - EB_HEADSIZE)) {
/* discovered some extra field inconsistency! */
Trace((stderr,
"qlfix: block length %u > rest ef_size %u\n", eb_len,
ef_len - EB_HEADSIZE));
break;
}
switch (eb_id) {
case EF_QDOS:
{
struct _ntc_
{
long id;
long dlen;
} ntc;
long dlen = 0;
qdosextra *extra = (qdosextra *)ef_ptr;
jbextra *jbp = (jbextra *)ef_ptr;
if (!strncmp(extra->longid, LONGID, strlen(LONGID)))
{
if (eb_len != EXTRALEN)
if (uO.qflag)
Info(slide, 0x201, ((char *)slide,
"warning: invalid length in Qdos field for %s\n",
FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide,
"warning: invalid length in Qdos field"));
if (extra->header.d_type)
{
dlen = extra->header.d_datalen;
}
}
if (!strncmp(jbp->longid, JBLONGID, strlen(JBLONGID)))
{
if (eb_len != JBEXTRALEN)
if (uO.qflag)
Info(slide, 0x201, ((char *)slide,
"warning: invalid length in QZ field for %s\n",
FnFilter1(G.filename)));
else
Info(slide, 0x201, ((char *)slide,
"warning: invalid length in QZ field"));
if(jbp->header.d_type)
{
dlen = jbp->header.d_datalen;
}
}
if ((long)LG(dlen) > 0)
{
G.outfile = fopen(G.filename,"r+");
fseek(G.outfile, -8, SEEK_END);
fread(&ntc, 8, 1, G.outfile);
if(ntc.id != *(long *)"XTcc")
{
ntc.id = *(long *)"XTcc";
ntc.dlen = dlen;
fwrite (&ntc, 8, 1, G.outfile);
}
Info(slide, 0x201, ((char *)slide, "QData = %d", LG(dlen)));
fclose(G.outfile);
}
return; /* finished, cancel further extra field scanning */
}
default:
Trace((stderr,"qlfix: unknown extra field block, ID=%d\n",
eb_id));
}
/* Skip this extra field block */
ef_ptr += (eb_len + EB_HEADSIZE);
ef_len -= (eb_len + EB_HEADSIZE);
}
}
#endif /* QLZIP */