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213 lines
4.8 KiB
213 lines
4.8 KiB
/*
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* Copyright (C) 2007-2008 Sourcefire, Inc.
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*
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* Authors: Nigel Horne
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* Change History:
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* $Log: binhex.c,v $
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* Revision 1.23 2007/02/12 20:46:08 njh
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* Various tidy
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*
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* Revision 1.22 2006/07/31 09:19:52 njh
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* Use MAP_PRIVATE
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*
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* Revision 1.21 2006/07/01 16:17:35 njh
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* Added destroy flag
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*
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* Revision 1.20 2006/07/01 03:47:50 njh
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* Don't loop if binhex runs out of memory
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*
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* Revision 1.19 2006/05/19 11:02:12 njh
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* Just include mbox.h
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*
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* Revision 1.18 2006/04/09 19:59:27 kojm
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* update GPL headers with new address for FSF
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*
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* Revision 1.17 2005/11/06 14:03:26 nigelhorne
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* Ensure NAME_MAX isn't redefined on BeOS
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*
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* Revision 1.16 2005/05/14 16:13:25 nigelhorne
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* Ensure munmap is the right size
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*
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* Revision 1.15 2005/05/13 19:30:34 nigelhorne
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* Clean cli_realloc call
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*
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* Revision 1.14 2005/03/10 08:51:30 nigelhorne
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* Tidy
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*
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* Revision 1.13 2005/01/19 05:29:41 nigelhorne
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* tidy
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*
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* Revision 1.12 2004/12/27 14:17:14 nigelhorne
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* Fix segfault if write to temporary file fails
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*
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* Revision 1.11 2004/12/17 12:03:38 nigelhorne
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* Tidy up for machines without MMAP
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*
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* Revision 1.10 2004/12/16 15:29:51 nigelhorne
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* Tidy
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*
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* Revision 1.9 2004/11/28 22:06:39 nigelhorne
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* Tidy space only headers code
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*
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* Revision 1.8 2004/11/28 21:05:50 nigelhorne
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* Handle headers with only spaces
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*
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* Revision 1.7 2004/11/23 09:05:26 nigelhorne
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* Fix crash in base64 encoded binhex files
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*
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* Revision 1.6 2004/11/22 15:16:53 nigelhorne
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* Use cli_realloc instead of many cli_mallocs
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*
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* Revision 1.5 2004/11/18 20:11:34 nigelhorne
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* Fix segfault
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*
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* Revision 1.4 2004/11/18 19:30:29 kojm
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* add support for Mac's HQX file format
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*
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* Revision 1.3 2004/11/18 18:24:45 nigelhorne
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* Added binhex.h
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*
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* Revision 1.2 2004/11/18 18:09:06 nigelhorne
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* First draft of binhex.c
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*
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*/
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static char const rcsid[] = "$Id: binhex.c,v 1.23 2007/02/12 20:46:08 njh Exp $";
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#include "clamav.h"
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#ifdef CL_THREAD_SAFE
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#ifndef _REENTRANT
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#define _REENTRANT /* for Solaris 2.8 */
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#endif
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#endif
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#include <stdio.h>
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#include <memory.h>
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#include <sys/stat.h>
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#if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H)
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#include <sys/mman.h>
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#endif
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#include "others.h"
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#include "mbox.h"
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#include "binhex.h"
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#include "fmap.h"
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int
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cli_binhex(const char *dir, fmap_t *map)
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{
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char *buf, *start, *line;
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size_t size;
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long bytesleft;
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message *m;
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fileblob *fb;
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text *t_line;
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size = (size_t)map->len;
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if(size == 0)
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return CL_CLEAN;
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m = messageCreate();
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if(m == NULL)
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return CL_EMEM;
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start = buf = fmap_need_off_once(map, 0, size);
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if(!buf) {
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messageDestroy(m);
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return CL_EMAP;
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}
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cli_dbgmsg("mmap'ed binhex file\n");
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bytesleft = (long)size;
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line = NULL;
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while(bytesleft > 0) {
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int length = bytesleft;
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char *ptr, *newline;
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/*printf("%d: ", bytesleft);*/
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for(ptr = buf; bytesleft && (*ptr != '\n') && (*ptr != '\r'); ptr++) {
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--bytesleft;
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}
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length -= bytesleft;
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/*printf("%d: ", length);*/
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newline = cli_realloc(line, (size_t)(length + 1));
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if(newline == NULL)
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break;
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line = newline;
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memcpy(line, buf, length);
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line[length] = '\0';
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/*puts(line);*/
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if(messageAddStr(m, line) < 0)
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break;
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if((bytesleft > 0) && (*ptr == '\r')) {
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ptr++;
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bytesleft--;
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}
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buf = ++ptr;
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bytesleft--;
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}
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if(line)
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free(line);
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if((t_line = binhexBegin(m)) == NULL) {
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messageDestroy(m);
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cli_dbgmsg("No binhex line found\n");
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return CL_EFORMAT;
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}
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while(((t_line = t_line->t_next) != NULL) && (t_line->t_line == NULL));
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if(!t_line) {
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messageDestroy(m);
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cli_dbgmsg("No binhex data to parse\n");
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return CL_EFORMAT;
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}
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/* similar to binhexMessage */
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messageSetEncoding(m, "x-binhex");
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fb = messageToFileblob(m, dir, 1);
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if(fb) {
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cli_dbgmsg("Binhex file decoded to %s\n", fileblobGetFilename(fb));
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fileblobDestroy(fb);
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} else
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cli_errmsg("Couldn't decode binhex file to %s\n", dir);
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messageDestroy(m);
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if(fb)
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return CL_CLEAN; /* a lie - but it gets things going */
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/* return CL_EIO; */ /* probably CL_EMEM, but we can't tell at this layer */
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/* TK: CL_EMEM is too generic here and should not be reported for parsing errors */
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return CL_EFORMAT;
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}
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