/*

  *  Copyright (C) 2002 - 2004 Tomasz Kojm <tkojm@clamav.net>

  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <dirent.h>
 
 #ifdef CL_THREAD_SAFE
 #  include <pthread.h>
 pthread_mutex_t cli_scanrar_mutex = PTHREAD_MUTEX_INITIALIZER;
 int cli_scanrar_inuse = 0;
 #endif
 
 #include "clamav.h"
 #include "others.h"
 #include "matcher.h"
 #include "unrarlib.h"

 #include "ole2_extract.h"
 #include "vba_extract.h"

 
 #ifdef HAVE_ZLIB_H
 #include <zlib.h>
 #include <zzip.h>
 #endif
 
 #ifdef HAVE_BZLIB_H
 #include <bzlib.h>
 #endif
 
 #define SCAN_ARCHIVE	(options & CL_ARCHIVE)
 #define SCAN_MAIL	(options & CL_MAIL)

 #define SCAN_OLE2	(options & CL_OLE2)

 #define DISABLE_RAR	(options & CL_DISABLERAR)

 #define MAGIC_BUFFER_SIZE 14

 #define RAR_MAGIC_STR "Rar!"
 #define ZIP_MAGIC_STR "PK\003\004"
 #define GZIP_MAGIC_STR "\037\213"
 #define MAIL_MAGIC_STR "From "

 #define RAWMAIL_MAGIC_STR "Received: "

 #define MAILDIR_MAGIC_STR "Return-Path: "

 #define DELIVERED_MAGIC_STR "Delivered-To: "

 #define BZIP_MAGIC_STR "BZh"

 #define OLE2_MAGIC_STR "\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1"

 
 int cli_magic_scandesc(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev);
 
 int cli_scandesc(int desc, char **virname, long int *scanned, const struct 
 cl_node *root)
 {
  	char *buffer, *buff, *endbl, *pt;
 	int bytes, buffsize, length;
 
     /* prepare the buffer */

     buffsize = root->maxpatlen + SCANBUFF;

     if(!(buffer = (char *) cli_calloc(buffsize, sizeof(char)))) {
 	cli_dbgmsg("cli_scandesc(): unable to malloc(%d)\n", buffsize);

 	return CL_EMEM;

     }

 
     buff = buffer;
     buff += root->maxpatlen; /* pointer to read data block */

     endbl = buff + SCANBUFF - root->maxpatlen; /* pointer to the last block

 						* length of root->maxpatlen
 						*/
 
     pt= buff;

     length = SCANBUFF;

     while((bytes = read(desc, buff, SCANBUFF)) > 0) {

 
 	if(scanned != NULL)
 	    *scanned += bytes / CL_COUNT_PRECISION;
 

 	if(bytes < SCANBUFF)
 	    length -= SCANBUFF - bytes;

 
 	if(cl_scanbuff(pt, length, virname, root) == CL_VIRUS) {
 	    free(buffer);
 	    return CL_VIRUS;
 	}
 

 	if(bytes == SCANBUFF)

 	    memmove(buffer, endbl, root->maxpatlen);
 
         pt = buffer;
         length=buffsize;
 
     }
 
     free(buffer);
     return CL_CLEAN;
 }
 
 #ifdef CL_THREAD_SAFE
 void cli_unlock_mutex(void *mtx)
 {
     cli_dbgmsg("Pthread cancelled. Unlocking mutex.\n");
     pthread_mutex_unlock(mtx);
 }
 #endif
 
 int cli_scanrar(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {

 	FILE *tmp = NULL;

 	int files = 0, fd, ret = CL_CLEAN;
 	ArchiveList_struct *rarlist = NULL;
 	char *rar_data_ptr;
 	unsigned long rar_data_size;
 
     cli_dbgmsg("Starting scanrar()\n");
 
 
 #ifdef CL_THREAD_SAFE
     pthread_cleanup_push(cli_unlock_mutex, &cli_scanrar_mutex);
     pthread_mutex_lock(&cli_scanrar_mutex);
     cli_scanrar_inuse = 1;
 #endif
 
     if(!urarlib_list(desc, (ArchiveList_struct *) &rarlist)) {
 #ifdef CL_THREAD_SAFE
 	pthread_mutex_unlock(&cli_scanrar_mutex);
 	cli_scanrar_inuse = 0;
 #endif
 	return CL_ERAR;
     }
 
     while(rarlist) {
 
 	if(limits) {
 	    if(limits->maxfilesize && (rarlist->item.UnpSize > limits->maxfilesize)) {
 		cli_dbgmsg("RAR->%s: Size exceeded (%d, max: %d)\n", rarlist->item.Name, rarlist->item.UnpSize, limits->maxfilesize);
 		rarlist = rarlist->next;
 		files++;
 		ret = CL_EMAXSIZE;
 		continue;
 	    }
 
 	    if(limits->maxfiles && (files > limits->maxfiles)) {
 		cli_dbgmsg("RAR: Files limit reached (max: %d)\n", limits->maxfiles);
 		ret = CL_EMAXFILES;
 		break;
 	    }
 	}
 
 	if((tmp = tmpfile()) == NULL) {
 	    cli_dbgmsg("RAR -> Can't generate tmpfile().\n");
 #ifdef CL_THREAD_SAFE
 	    pthread_mutex_unlock(&cli_scanrar_mutex);
 	    cli_scanrar_inuse = 0;
 #endif
 	    return CL_ETMPFILE;
 	}
 	fd = fileno(tmp);
 
 	if(urarlib_get(&rar_data_ptr, &rar_data_size, rarlist->item.Name, desc, "clam")) {
 	    cli_dbgmsg("RAR -> Extracted: %s, size: %d\n", rarlist->item.Name, rar_data_size);

 	    if(fwrite(rar_data_ptr, rar_data_size, 1, tmp) != 1) {

 		cli_dbgmsg("RAR -> Can't write() file.\n");

 		fclose(tmp);

 		tmp = NULL;
 		ret = CL_ERAR;

 		if(rar_data_ptr) {

 		    free(rar_data_ptr);

 		    rar_data_ptr = NULL;
 		}

 		break;

 	    }
 

 	    if(rar_data_ptr) {

 		free(rar_data_ptr);

 		rar_data_ptr = NULL;
 	    }
 	    if(fflush(tmp) != 0) {
 		cli_dbgmsg("fflush() failed: %s\n", strerror(errno));
 		fclose(tmp);

 		urarlib_freelist(rarlist);
 #ifdef CL_THREAD_SAFE
 		pthread_mutex_unlock(&cli_scanrar_mutex);
 		cli_scanrar_inuse = 0;
 #endif
 		return CL_EFSYNC;
 	    }
 
 	    lseek(fd, 0, SEEK_SET);
 	    if((ret = cli_magic_scandesc(fd, virname, scanned, root, limits, options, reclev)) == CL_VIRUS ) {
 		cli_dbgmsg("RAR -> Found %s virus.\n", *virname);

 		fclose(tmp);

 		urarlib_freelist(rarlist);
 #ifdef CL_THREAD_SAFE
 		pthread_mutex_unlock(&cli_scanrar_mutex);
 		cli_scanrar_inuse = 0;
 #endif
 		return CL_VIRUS;
 	    }
 
 	} else {
 	    cli_dbgmsg("RAR -> Can't decompress file %s\n", rarlist->item.Name);

 	    fclose(tmp);
 	    ret = CL_ERAR; /* WinRAR 3.0 ? */
 	    break;

 	}
 

 	fclose(tmp);

 	tmp = NULL;
 	rarlist = rarlist->next;
 	files++;
     }
 
     urarlib_freelist(rarlist);
 #ifdef CL_THREAD_SAFE
     pthread_mutex_unlock(&cli_scanrar_mutex);
     cli_scanrar_inuse = 0;
     pthread_cleanup_pop(0);
 #endif
     return ret;
 }
 
 #ifdef HAVE_ZLIB_H
 int cli_scanzip(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	ZZIP_DIR *zdir;
 	ZZIP_DIRENT zdirent;
 	ZZIP_FILE *zfp;

 	FILE *tmp = NULL;

 	char *buff;

 	int fd, bytes, files = 0, ret = CL_CLEAN;

 	struct stat source;

 	zzip_error_t err;

 
     cli_dbgmsg("Starting scanzip()\n");
 

     if((zdir = zzip_dir_fdopen(dup(desc), &err)) == NULL) {
 	cli_dbgmsg("Zip -> Not supported file format ?.\n");
 	cli_dbgmsg("zzip_dir_fdopen() return code: %d\n", err);

 	/* no return with CL_EZIP due to password protected zips */
 	return CL_CLEAN;

     }
 

     fstat(desc, &source);
 

     if(!(buff = (char *) cli_malloc(FILEBUFF))) {

 	cli_dbgmsg("cli_scanzip(): unable to malloc(%d)\n", FILEBUFF);

 	zzip_dir_close(zdir);
 	return CL_EMEM;
     }
 

     while(zzip_dir_read(zdir, &zdirent)) {

 
 	if(!zdirent.d_name || !strlen(zdirent.d_name)) { /* Mimail fix */
 	    cli_dbgmsg("strlen(zdirent.d_name) == %d\n", strlen(zdirent.d_name));

 	    *virname = "Suspected.Zip";

 	    ret = CL_VIRUS;
 	    break;
 	}
 

 	cli_dbgmsg("Zip -> %s, compressed: %d, normal: %d.\n", zdirent.d_name, zdirent.d_csize, zdirent.st_size);
 

 	if(limits && limits->maxratio > 0 && source.st_size && (zdirent.st_size / source.st_size) >= limits->maxratio) {

 	    *virname = "Oversized.Zip";

 	    ret = CL_VIRUS;
 	    break;
 	}
 

 	if(!zdirent.st_size) { /* omit directories and null files */
 	    files++;
 	    continue;
 	}
 
 	/* work-around for problematic zips (zziplib crashes with them) */
 	if(zdirent.d_csize < 0 || zdirent.st_size < 0) {
 	    files++;
 	    cli_dbgmsg("Zip -> Malformed archive detected.\n");

 	    /* ret = CL_EMALFZIP; */
 	    /* report it as a virus */

 	    *virname = "Suspected.Zip";

 	    ret = CL_VIRUS;

 	    break;
 	}
 
 	if(limits) {
 	    if(limits->maxfilesize && (zdirent.st_size > limits->maxfilesize)) {
 		cli_dbgmsg("Zip -> %s: Size exceeded (%d, max: %d)\n", zdirent.d_name, zdirent.st_size, limits->maxfilesize);
 		files++;
 		ret = CL_EMAXSIZE;

 		continue; /* this is not a bug */

 	    }
 
 	    if(limits->maxfiles && (files > limits->maxfiles)) {
 		cli_dbgmsg("Zip: Files limit reached (max: %d)\n", limits->maxfiles);
 		ret = CL_EMAXFILES;
 		break;
 	    }
 	}
 
 	/* generate temporary file and get its descriptor */
 	if((tmp = tmpfile()) == NULL) {
 	    cli_dbgmsg("Zip -> Can't generate tmpfile().\n");

 	    ret = CL_ETMPFILE;
 	    break;

 	}
 
 	if((zfp = zzip_file_open(zdir, zdirent.d_name, 0)) == NULL) {
 	    cli_dbgmsg("Zip -> %s: Can't open file.\n", zdirent.d_name);
 	    ret = CL_EZIP;

 	    break;

 	}
 

 
 	while((bytes = zzip_file_read(zfp, buff, FILEBUFF)) > 0) {

 	    if(fwrite(buff, bytes, 1, tmp)*bytes != bytes) {
 		cli_dbgmsg("Zip -> Can't fwrite() file: %s\n", strerror(errno));

 		zzip_file_close(zfp);

 		zzip_dir_close(zdir);
 		fclose(tmp);

 		free(buff);

 		return CL_EZIP;

 	    }
 	}
 
 	zzip_file_close(zfp);
 

 	if(fflush(tmp) != 0) {
 	    cli_errmsg("fflush() failed: %s\n", strerror(errno));

 	    ret = CL_EFSYNC;
 	    break;

 	}
 

 	fd = fileno(tmp);
 

 	lseek(fd, 0, SEEK_SET);
 	if((ret = cli_magic_scandesc(fd, virname, scanned, root, limits, options, reclev)) == CL_VIRUS ) {
 	    cli_dbgmsg("Zip -> Found %s virus.\n", *virname);
 	    ret = CL_VIRUS;
 	    break;
 	} else if(ret == CL_EMALFZIP) {
 	    /* 

 	     * The trick with detection of ZoD only works with higher (>= 5)

 	     * recursion limit level.
 	     */
 	    cli_dbgmsg("Zip -> Malformed Zip, scanning stopped.\n");

 	    *virname = "Suspected.Zip";

 	    ret = CL_VIRUS;
 	    break;
 	}
 

 	if (tmp) {
 	    fclose(tmp);
 	    tmp = NULL;
 	}

 	files++;
     }
 
     zzip_dir_close(zdir);

     if (tmp) {
 	fclose(tmp);
 	tmp = NULL;
     }

 
     free(buff);

     return ret;
 }
 
 int cli_scangzip(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	int fd, bytes, ret = CL_CLEAN;
 	long int size = 0;

 	char *buff;

 	FILE *tmp = NULL;

 	gzFile gd;
 
 

     cli_dbgmsg("in cli_scangzip()\n");
 

     if((gd = gzdopen(dup(desc), "rb")) == NULL) {
 	cli_dbgmsg("Can't gzdopen() descriptor %d.\n", desc);
 	return CL_EGZIP;
     }
 
     if((tmp = tmpfile()) == NULL) {
 	cli_dbgmsg("Can't generate tmpfile().\n");
 	gzclose(gd);
 	return CL_ETMPFILE;
     }
     fd = fileno(tmp);
 

     if(!(buff = (char *) cli_malloc(FILEBUFF))) {

 	cli_dbgmsg("cli_scangzip(): unable to malloc(%d)\n", FILEBUFF);

 	gzclose(gd);

 	return CL_EMEM;

     }

     while((bytes = gzread(gd, buff, FILEBUFF)) > 0) {

 	size += bytes;
 
 	if(limits)

 	    if(limits->maxfilesize && (size + FILEBUFF > limits->maxfilesize)) {

 		cli_dbgmsg("Gzip->desc(%d): Size exceeded (stopped at %d, max: %d)\n", desc, size, limits->maxfilesize);
 		ret = CL_EMAXSIZE;
 		break;
 	    }
 
 	if(write(fd, buff, bytes) != bytes) {
 	    cli_dbgmsg("Gzip -> Can't write() file.\n");

 	    fclose(tmp);

 	    gzclose(gd);

 	    free(buff);

 	    return CL_EGZIP;
 	}
     }
 

     free(buff);

     gzclose(gd);
     if(fsync(fd) == -1) {
 	cli_dbgmsg("fsync() failed for descriptor %d\n", fd);

 	fclose(tmp);

 	return CL_EFSYNC;
     }
 
     lseek(fd, 0, SEEK_SET);
     if((ret = cli_magic_scandesc(fd, virname, scanned, root, limits, options, reclev)) == CL_VIRUS ) {
 	cli_dbgmsg("Gzip -> Found %s virus.\n", *virname);

 	fclose(tmp);

 	return CL_VIRUS;
     }

     fclose(tmp);

 
     return ret;
 }
 #endif
 
 #ifdef HAVE_BZLIB_H
 
 #ifdef NOBZ2PREFIX
 #define BZ2_bzReadOpen bzReadOpen
 #define BZ2_bzReadClose bzReadClose
 #define BZ2_bzRead bzRead
 #endif
 
 int cli_scanbzip(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	int fd, bytes, ret = CL_CLEAN, bzerror = 0;
 	short memlim = 0;
 	long int size = 0;

 	char *buff;

 	FILE *fs, *tmp = NULL;

 	BZFILE *bfd;
 
 

     if((fs = fdopen(dup(desc), "rb")) == NULL) {

 	cli_errmsg("Can't fdopen() descriptor %d.\n", desc);
 	return CL_EBZIP;
     }
 
     if(limits)
 	if(limits->archivememlim)
 	    memlim = 1;
 

     if((bfd = BZ2_bzReadOpen(&bzerror, fs, 0, memlim, NULL, 0)) == NULL) {

 	cli_dbgmsg("Can't initialize bzip2 library (descriptor %d).\n", desc);

 	fclose(fs);

 	return CL_EBZIP;
     }
 
     if((tmp = tmpfile()) == NULL) {
 	cli_dbgmsg("Can't generate tmpfile().\n");
 	BZ2_bzReadClose(&bzerror, bfd);

 	fclose(fs);

 	return CL_ETMPFILE;
     }
     fd = fileno(tmp);
 

     if(!(buff = (char *) malloc(FILEBUFF))) {
 	cli_dbgmsg("cli_scanbzip(): unable to malloc(%d)\n", FILEBUFF);
 	fclose(tmp);
 	fclose(fs);
 	BZ2_bzReadClose(&bzerror, bfd);

 	return CL_EMEM;

     }

     while((bytes = BZ2_bzRead(&bzerror, bfd, buff, FILEBUFF)) > 0) {

 	size += bytes;
 
 	if(limits)

 	    if(limits->maxfilesize && (size + FILEBUFF > limits->maxfilesize)) {

 		cli_dbgmsg("Bzip2->desc(%d): Size exceeded (stopped at %d, max: %d)\n", desc, size, limits->maxfilesize);
 		ret = CL_EMAXSIZE;
 		break;
 	    }
 
 	if(write(fd, buff, bytes) != bytes) {
 	    cli_dbgmsg("Bzip2 -> Can't write() file.\n");
 	    BZ2_bzReadClose(&bzerror, bfd);

 	    fclose(tmp);

 	    free(buff);

 	    fclose(fs);

 	    return CL_EGZIP;
 	}
     }
 

     free(buff);

     BZ2_bzReadClose(&bzerror, bfd);
     if(fsync(fd) == -1) {
 	cli_dbgmsg("fsync() failed for descriptor %d\n", fd);

 	fclose(tmp);

 	fclose(fs);

 	return CL_EFSYNC;
     }
 
     lseek(fd, 0, SEEK_SET);
     if((ret = cli_magic_scandesc(fd, virname, scanned, root, limits, options, reclev)) == CL_VIRUS ) {
 	cli_dbgmsg("Bzip2 -> Found %s virus.\n", *virname);
     }

     fclose(tmp);

     fclose(fs);

 
     return ret;
 }
 #endif
 

 int cli_scanole2(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	const char *tmpdir;
 	char *dir, *fullname;
 	unsigned char *data;
 	int ret = CL_CLEAN, fd, i;
 	vba_project_t *vba_project;
 
     cli_dbgmsg("in cli_scanole2()\n");
 
     tmpdir = getenv("TMPDIR");
 
     if(tmpdir == NULL)
 #ifdef P_tmpdir
 	tmpdir = P_tmpdir;
 #else
 	tmpdir = "/tmp";
 #endif
 
 	/* generate the temporary directory */
 	dir = cl_gentemp(tmpdir);
 	if(mkdir(dir, 0700)) {
 	    cli_errmsg("ScanOLE2 -> Can't create temporary directory %s\n", dir);
 	    return CL_ETMPDIR;
 	}
 
 	if((ret = cli_ole2_extract(desc, dir))) {
 	    cli_errmsg("ScanOLE2 -> %s\n", cl_strerror(ret));
 	    cli_rmdirs(dir);
 	    free(dir);
 	    return ret;
 	}
 
 	if((vba_project = (vba_project_t *) vba56_dir_read(dir))) {
 
 	    for(i = 0; i < vba_project->count; i++) {
 		fullname = (char *) malloc(strlen(vba_project->dir) + strlen(vba_project->name[i]) + 2);
 		sprintf(fullname, "%s/%s", vba_project->dir, vba_project->name[i]);
 		fd = open(fullname, O_RDONLY);
 		if(fd == -1) {
 			cli_errmsg("Scan->OLE2 -> Can't open file %s\n", fullname);
 			free(fullname);
 			ret = CL_EOPEN;
 			break;
 		}
 		free(fullname);
 		data = (unsigned char *) vba_decompress(fd, vba_project->offset[i]);

 		close(fd);

 
 		if(cl_scanbuff(data, strlen(data), virname, root) == CL_VIRUS) {
 		    free(data);
 		    ret = CL_VIRUS;
 		    break;
 		}
 
 		free(data);
 	    }
 

 	    for(i = 0; i < vba_project->count; i++)
 		free(vba_project->name[i]);
 	    free(vba_project->name);
 	    free(vba_project->dir);
 	    free(vba_project->offset);

 	    free(vba_project);

 	}
 
 
 	cli_rmdirs(dir);
 	free(dir);
 	return ret;
 }

 int cli_scandir(char *dirname, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	DIR *dd;
 	struct dirent *dent;
 	struct stat statbuf;
 	char *fname;
 
 
     if((dd = opendir(dirname)) != NULL) {
 	while((dent = readdir(dd))) {
 	    if(dent->d_ino) {
 		if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
 		    /* build the full name */
 		    fname = cli_calloc(strlen(dirname) + strlen(dent->d_name) + 2, sizeof(char));
 		    sprintf(fname, "%s/%s", dirname, dent->d_name);
 
 		    /* stat the file */
 		    if(lstat(fname, &statbuf) != -1) {
 			if(S_ISDIR(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode))

 			    cli_scandir(fname, virname, scanned, root, limits, options, reclev);

 			else
 			    if(S_ISREG(statbuf.st_mode))
 				if(cl_scanfile(fname, virname, scanned, root, limits, options) == CL_VIRUS) {
 				    free(fname);
 				    closedir(dd);
 				    return CL_VIRUS;
 				}
 
 		    }
 		    free(fname);
 		}
 	    }
 	}
     } else {
 	cli_errmsg("ScanDir -> Can't open directory %s.\n", dirname);
 	return CL_EOPEN;
     }
 
     closedir(dd);
     return 0;
 }
 
 int cli_scanmail(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {
 	const char *tmpdir;
 	char *dir;
 	int ret;
 
 

     cli_dbgmsg("Starting cli_scanmail()\n");
 

     if(*reclev > 5) /* FIXME: a temporary workaround */

 	return CL_CLEAN;

 
     tmpdir = getenv("TMPDIR");
 
     if(tmpdir == NULL)
 #ifdef P_tmpdir
 	tmpdir = P_tmpdir;
 #else
 	tmpdir = "/tmp";
 #endif
 
 	/* generate the temporary directory */

 	dir = cl_gentemp(tmpdir);

 	if(mkdir(dir, 0700)) {
 	    cli_errmsg("ScanMail -> Can't create temporary directory %s\n", dir);
 	    return CL_ETMPDIR;
 	}
 
 	/*
 	 * Extract the attachments into the temporary directory
 	 */
 	ret = cl_mbox(dir, desc);
 	/* FIXME: check mbox return code */
 
 	ret = cli_scandir(dir, virname, scanned, root, limits, options, reclev);
 
 	cli_rmdirs(dir);
 	free(dir);
 
 	return ret;
 }
 
 int cli_magic_scandesc(int desc, char **virname, long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options, int *reclev)
 {

 	char magic[MAGIC_BUFFER_SIZE+1];

 	int ret = CL_CLEAN;

 	int bread = 0;

 
 
     if(!root) {
 	cli_errmsg("root == NULL\n");
 	return -1;
     }
 

     if(SCAN_ARCHIVE || SCAN_MAIL) {
         /* Need to examine file type */

 	if(SCAN_ARCHIVE && limits && limits->maxreclevel)

 	    if(*reclev > limits->maxreclevel)
 		return CL_EMAXREC;
 
 	(*reclev)++;
 
 

 	lseek(desc, 0, SEEK_SET);
 	bread = read(desc, magic, MAGIC_BUFFER_SIZE);
 	magic[MAGIC_BUFFER_SIZE] = '\0';	/* terminate magic string properly */

 	lseek(desc, 0, SEEK_SET);
 
 

 	if (bread != MAGIC_BUFFER_SIZE) {
 	    /* short read: No need to do magic */

 	    (*reclev)--;

 	    return ret;
 	}

 #ifdef CL_THREAD_SAFE
 	/* this check protects against recursive deadlock */

 	if(!DISABLE_RAR && SCAN_ARCHIVE && !cli_scanrar_inuse && !strncmp(magic, RAR_MAGIC_STR, strlen(RAR_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized rar file.\n");

 	    ret = cli_scanrar(desc, virname, scanned, root, limits, options, reclev);
 	}
 #else

 	if(!DISABLE_RAR && SCAN_ARCHIVE && !strncmp(magic, RAR_MAGIC_STR, strlen(RAR_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized rar file.\n");

 	    ret = cli_scanrar(desc, virname, scanned, root, limits, options, reclev);
 	}
 #endif
 #ifdef HAVE_ZLIB_H

 	else if(SCAN_ARCHIVE && !strncmp(magic, ZIP_MAGIC_STR, strlen(ZIP_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized zip file.\n");

 	    ret = cli_scanzip(desc, virname, scanned, root, limits, options, reclev);

 	} else if(SCAN_ARCHIVE && !strncmp(magic, GZIP_MAGIC_STR, strlen(GZIP_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized gzip file.\n");

 	    ret = cli_scangzip(desc, virname, scanned, root, limits, options, reclev);
 	}
 #endif
 #ifdef HAVE_BZLIB_H

 	else if(SCAN_ARCHIVE && !strncmp(magic, BZIP_MAGIC_STR, strlen(BZIP_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized bzip file.\n");

 	    ret = cli_scanbzip(desc, virname, scanned, root, limits, options, reclev);
 	}
 #endif

 	else if(SCAN_OLE2 && !strncmp(magic, OLE2_MAGIC_STR, 8)) {
 	    cli_dbgmsg("Recognized OLE2 file.\n");
 	    ret = cli_scanole2(desc, virname, scanned, root, limits, options, reclev);
 	}

 	else if(SCAN_MAIL && !strncmp(magic, MAIL_MAGIC_STR, strlen(MAIL_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized mail file.\n");

 	    ret = cli_scanmail(desc, virname, scanned, root, limits, options, reclev);
 	}

 	else if(SCAN_MAIL && !strncmp(magic, RAWMAIL_MAGIC_STR, strlen(RAWMAIL_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized raw mail file.\n");

 	    ret = cli_scanmail(desc, virname, scanned, root, limits, options, reclev);

 	} else if(SCAN_MAIL && !strncasecmp(magic, MAILDIR_MAGIC_STR, strlen(MAILDIR_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized Maildir mail file.\n");
 	    ret = cli_scanmail(desc, virname, scanned, root, limits, options, reclev);

 	} else if(SCAN_MAIL && !strncmp(magic, DELIVERED_MAGIC_STR, strlen(DELIVERED_MAGIC_STR))) {

 	    cli_dbgmsg("Recognized (Delivered-To) mail file.\n");
 	    ret = cli_scanmail(desc, virname, scanned, root, limits, options, reclev);

 	}

 	(*reclev)--;

     }
 

     if(ret != CL_VIRUS) { /* scan the raw file */

 	lseek(desc, 0, SEEK_SET); /* If archive scan didn't rewind desc */

 	if(cli_scandesc(desc, virname, scanned, root) == CL_VIRUS) {
 	    cli_dbgmsg("%s virus found in descriptor %d.\n", *virname, desc);
 	    return CL_VIRUS;
 	}

     }

 
     return ret;
 }
 
 int cl_scandesc(int desc, char **virname, unsigned long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options)
 {
 	int reclev = 0;
 
     return cli_magic_scandesc(desc, virname, scanned, root, limits, options, &reclev);
 }
 
 int cl_scanfile(const char *filename, char **virname, unsigned long int *scanned, const struct cl_node *root, const struct cl_limits *limits, int options)
 {
 	int fd, ret;
 
     if((fd = open(filename, O_RDONLY)) == -1)
 	return CL_EOPEN;
 
     cli_dbgmsg("Scanning %s\n", filename);
     ret = cl_scandesc(fd, virname, scanned, root, limits, options);
     close(fd);
 
     return ret;
 }