/*

  *  Copyright (C) 2007-2008 Sourcefire, Inc.

  *

  *  Authors: Tomasz Kojm

  *
  *  This program is free software; you can redistribute it and/or modify

  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.

  *
  *  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., 51 Franklin Street, Fifth Floor, Boston,
  *  MA 02110-1301, USA.

  */
 

 #if HAVE_CONFIG_H
 #include "clamav-config.h"
 #endif
 

 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>

 #ifdef	HAVE_UNISTD_H

 #include <unistd.h>

 #endif
 #ifdef	HAVE_SYS_PARAM_H

 #include <sys/param.h>

 #endif

 #include <fcntl.h>

 #ifndef	C_WINDOWS

 #include <dirent.h>

 #include <netinet/in.h>

 #endif

 #if HAVE_MMAP
 #if HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 #else /* HAVE_SYS_MMAN_H */
 #undef HAVE_MMAP
 #endif
 #endif
 

 #ifndef	O_BINARY
 #define	O_BINARY	0
 #endif
 

 #define DCONF_ARCH  ctx->dconf->archive
 #define DCONF_DOC   ctx->dconf->doc
 #define DCONF_MAIL  ctx->dconf->mail
 #define DCONF_OTHER ctx->dconf->other
 

 #include "clamav.h"
 #include "others.h"

 #include "dconf.h"

 #include "scanners.h"

 #include "matcher-ac.h"
 #include "matcher-bm.h"

 #include "matcher.h"

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

 #include "msexpand.h"

 #include "mbox.h"

 #include "chmunpack.h"

 #include "pe.h"

 #include "elf.h"

 #include "filetypes.h"
 #include "htmlnorm.h"

 #include "untar.h"

 #include "special.h"

 #include "binhex.h"

 /* #include "uuencode.h" */

 #include "tnef.h"

 #include "sis.h"

 #include "pdf.h"

 #include "str.h"

 #include "mspack.h"
 #include "cab.h"

 #include "rtf.h"

 #include "unarj.h"

 #include "nulsft.h"

 #include "autoit.h"

 #include "textnorm.h"

 #include <zlib.h>

 #include "unzip.h"

 
 #ifdef HAVE_BZLIB_H
 #include <bzlib.h>
 #endif
 

 #ifdef ENABLE_UNRAR

 #include "libclamunrar_iface/unrar_iface.h"

 #endif
 

 #if defined(HAVE_READDIR_R_3) || defined(HAVE_READDIR_R_2)
 #include <limits.h>

 #include <stddef.h>

 #endif
 

 static int cli_scanfile(const char *filename, cli_ctx *ctx);

 static int cli_scandir(const char *dirname, cli_ctx *ctx, cli_file_t container)
 {
 	DIR *dd;
 	struct dirent *dent;
 #if defined(HAVE_READDIR_R_3) || defined(HAVE_READDIR_R_2)
 	union {
 	    struct dirent d;
 	    char b[offsetof(struct dirent, d_name) + NAME_MAX + 1];
 	} result;
 #endif
 	struct stat statbuf;
 	char *fname;
 	int fd, ret = CL_CLEAN;
 	cli_file_t ftype;
 
 
     if((dd = opendir(dirname)) != NULL) {
 #ifdef HAVE_READDIR_R_3
 	while(!readdir_r(dd, &result.d, &dent) && dent) {
 #elif defined(HAVE_READDIR_R_2)
 	while((dent = (struct dirent *) readdir_r(dd, &result.d))) {
 #else
 	while((dent = readdir(dd))) {
 #endif
 #if	(!defined(C_CYGWIN)) && (!defined(C_INTERIX)) && (!defined(C_WINDOWS))
 	    if(dent->d_ino)
 #endif
 	    {
 		if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
 		    /* build the full name */
 		    fname = cli_malloc(strlen(dirname) + strlen(dent->d_name) + 2);
 		    if(!fname) {
 			closedir(dd);
 			return CL_EMEM;
 		    }
 
 		    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)) {
 			    if(cli_scandir(fname, ctx, container) == CL_VIRUS) {
 				free(fname);
 				closedir(dd);
 				return CL_VIRUS;
 			    }
 			} else {
 			    if(S_ISREG(statbuf.st_mode)) {
 				if(cli_scanfile(fname, ctx) == CL_VIRUS) {
 				    free(fname);
 				    closedir(dd);
 				    return CL_VIRUS;
 				}
 
 				if(container == CL_TYPE_MAIL) {
 				    fd = open(fname, O_RDONLY|O_BINARY);
 				    ftype = cli_filetype2(fd, ctx->engine);
 				    if(ftype >= CL_TYPE_TEXT_ASCII && ftype <= CL_TYPE_TEXT_UTF16BE) {
 					lseek(fd, 0, SEEK_SET);

 					ret = cli_scandesc(fd, ctx, CL_TYPE_MAIL, 0, NULL, AC_SCAN_VIR);

 				    }
 				    close(fd);
 				    if(ret == CL_VIRUS) {
 					free(fname);
 					closedir(dd);
 					return CL_VIRUS;
 				    }
 				}
 			    }
 			}
 		    }
 		    free(fname);
 		}
 	    }
 	}
     } else {
 	cli_dbgmsg("cli_scandir: Can't open directory %s.\n", dirname);
 	return CL_EOPEN;
     }
 
     closedir(dd);
     return CL_CLEAN;
 }
 

 #ifdef ENABLE_UNRAR

 static int cli_unrar_scanmetadata(int desc, unrar_metadata_t *metadata, cli_ctx *ctx, unsigned int files, uint32_t* sfx_check)

 {

 	int ret = CL_SUCCESS;
 	struct cli_meta_node* mdata;

     if(files == 1 && sfx_check) {
 	if(*sfx_check == metadata->crc)
 	    return CL_BREAK;/* break extract loop */
 	else
 	    *sfx_check = metadata->crc;

     }
 

     cli_dbgmsg("RAR: %s, crc32: 0x%x, encrypted: %u, compressed: %u, normal: %u, method: %u, ratio: %u\n",

 	metadata->filename, metadata->crc, metadata->encrypted, (unsigned int) metadata->pack_size,
 	(unsigned int) metadata->unpack_size, metadata->method,

 	metadata->pack_size ? (unsigned int) (metadata->unpack_size / metadata->pack_size) : 0);

     /* Scan metadata */
     mdata = ctx->engine->rar_mlist;
     if(mdata) do {
 	if(mdata->encrypted != metadata->encrypted)
 	    continue;

 	if(mdata->crc32 && (unsigned int) mdata->crc32 != metadata->crc)
 	    continue;

 	if(mdata->csize > 0 && (unsigned int) mdata->csize != metadata->pack_size)
 	    continue;

 	if(mdata->size >= 0 && (unsigned int) mdata->size != metadata->unpack_size)
 	    continue;

 	if(mdata->method >= 0 && mdata->method != metadata->method)
 	    continue;

 	if(mdata->fileno && mdata->fileno != files)
 	    continue;

 	if(mdata->maxdepth && ctx->recursion > mdata->maxdepth)

 	    continue;

 	/* TODO add support for regex */
 	/*if(mdata->filename && !strstr(zdirent.d_name, mdata->filename))*/
 	if(mdata->filename && strcmp((char *) metadata->filename, mdata->filename))
 	    continue;

 	break; /* matched */

     } while((mdata = mdata->next));

     if(mdata) {
 	*ctx->virname = mdata->virname;
 	return CL_VIRUS;	   
     }

     if(DETECT_ENCRYPTED && metadata->encrypted) {
 	cli_dbgmsg("RAR: Encrypted files found in archive.\n");
 	lseek(desc, 0, SEEK_SET);

 	ret = cli_scandesc(desc, ctx, 0, 0, NULL, AC_SCAN_VIR);

 	if(ret != CL_VIRUS) {
 	    *ctx->virname = "Encrypted.RAR";
 	    return CL_VIRUS;

 	}

     }

     return ret;
 }
 

 static int cli_scanrar(int desc, cli_ctx *ctx, off_t sfx_offset, uint32_t *sfx_check)
 {
 	int ret = CL_CLEAN;

 	unrar_metadata_t *metadata, *metadata_tmp;

 	char *dir;

 	unrar_state_t rar_state;

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

     if(sfx_offset)
 	if(lseek(desc, sfx_offset, SEEK_SET) == -1)
 	    return CL_EIO;
 

     /* generate the temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("RAR: Can't create temporary directory %s\n", dir);
 	free(dir);
 	return CL_ETMPDIR;
     }
 

     if((ret = unrar_open(desc, dir, &rar_state)) != UNRAR_OK) {

 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(dir);
 	free(dir);

 	if(ret == UNRAR_EMEM)
 	    return CL_EMEM;
 	else
 	    return CL_ERAR;

     }
 
     do {
 	int rc;

 	rar_state.ofd = -1;
 	ret = unrar_extract_next_prepare(&rar_state,dir);
 	if(ret != UNRAR_OK) {
 	    if(ret == UNRAR_BREAK)
 		ret = CL_BREAK;
 	    else if(ret == UNRAR_EMEM)
 		ret = CL_EMEM;
 	    else
 		ret = CL_ERAR;

 	    break;

 	}

 	if((ret=cli_checklimits("RAR", ctx, rar_state.metadata_tail->unpack_size, rar_state.metadata_tail->pack_size, 0)!=CL_CLEAN)) {

 	    free(rar_state.file_header->filename);
 	    free(rar_state.file_header);

 	    ret = CL_CLEAN;
 	    continue;
 	}

 	ret = unrar_extract_next(&rar_state,dir);
 	if(ret == UNRAR_OK)
 	    ret = CL_SUCCESS;
 	else if(ret == UNRAR_EMEM)
 	    ret = CL_EMEM;
 	else
 	    ret = CL_ERAR;
 
 	if(rar_state.ofd > 0) {
 	    lseek(rar_state.ofd,0,SEEK_SET);
 	    rc = cli_magic_scandesc(rar_state.ofd,ctx);
 	    close(rar_state.ofd);

 	    if(!cli_leavetemps_flag) 

 		cli_unlink(rar_state.filename);

 	    if(rc == CL_VIRUS ) {
 		cli_dbgmsg("RAR: infected with %s\n",*ctx->virname);
 		ret = CL_VIRUS;

 		break;
 	    }
 	}
 

 	if(ret == CL_SUCCESS)

 	    ret = cli_unrar_scanmetadata(desc,rar_state.metadata_tail, ctx, rar_state.file_count, sfx_check);

 
     } while(ret == CL_SUCCESS);
 
     if(ret == CL_BREAK)
 	ret = CL_CLEAN;
 
     metadata = metadata_tmp = rar_state.metadata; 
 

     if(cli_scandir(rar_state.comment_dir, ctx, 0) == CL_VIRUS)

 	ret = CL_VIRUS;

     unrar_close(&rar_state);

     if(!cli_leavetemps_flag)
         cli_rmdirs(dir);

     free(dir);

     metadata = metadata_tmp;
     while (metadata) {
     	metadata_tmp = metadata->next;
     	free(metadata->filename);
     	free(metadata);
     	metadata = metadata_tmp;

     }

     cli_dbgmsg("RAR: Exit code: %d\n", ret);

     return ret;
 }

 #endif /* ENABLE_UNRAR */

 static int cli_scanarj(int desc, cli_ctx *ctx, off_t sfx_offset, uint32_t *sfx_check)
 {
 	int ret = CL_CLEAN, rc;
 	arj_metadata_t metadata;
 	char *dir;
 
     cli_dbgmsg("in cli_scanarj()\n");
 
      /* generate the temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {

 	cli_dbgmsg("ARJ: Can't create temporary directory %s\n", dir);

 	free(dir);
 	return CL_ETMPDIR;
     }
 
     if(sfx_offset)
 	lseek(desc, sfx_offset, SEEK_SET);
 
     ret = cli_unarj_open(desc, dir);
     if (ret != CL_SUCCESS) {
 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(dir);
 	free(dir);
 	cli_dbgmsg("ARJ: Error: %s\n", cl_strerror(ret));
 	return ret;
     }
     
    metadata.filename = NULL;
 
    do {
 	ret = cli_unarj_prepare_file(desc, dir, &metadata);
 	if (ret != CL_SUCCESS) {
 	   break;
 	}

 	if ((ret = cli_checklimits("ARJ", ctx, metadata.orig_size, metadata.comp_size, 0))!=CL_CLEAN) {
 	    ret = CL_SUCCESS;
 	    continue;

 	}
 	ret = cli_unarj_extract_file(desc, dir, &metadata);
 	if (metadata.ofd >= 0) {
 	    lseek(metadata.ofd, 0, SEEK_SET);
 	    rc = cli_magic_scandesc(metadata.ofd, ctx);
 	    close(metadata.ofd);
 	    if (rc == CL_VIRUS) {
 		cli_dbgmsg("ARJ: infected with %s\n",*ctx->virname);
 		ret = CL_VIRUS;
 		break;
 	    }
 	}
 	if (metadata.filename) {
 		free(metadata.filename);
 		metadata.filename = NULL;
 	}
 
     } while(ret == CL_SUCCESS);
     
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     if (metadata.filename) {
 	free(metadata.filename);
     }
 
     cli_dbgmsg("ARJ: Exit code: %d\n", ret);

     if (ret == CL_BREAK)
 	ret = CL_CLEAN;

 
     return ret;
 }

 static int cli_scangzip(int desc, cli_ctx *ctx)

 {
 	int fd, bytes, ret = CL_CLEAN;

 	unsigned long int size = 0;

 	char *buff;

 	char *tmpname;

 	gzFile gd;
 
 

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

     if((gd = gzdopen(dup(desc), "rb")) == NULL) {

 	cli_dbgmsg("GZip: Can't open descriptor %d\n", desc);

 	return CL_EGZIP;
     }
 

     if((ret = cli_gentempfd(NULL, &tmpname, &fd))) {

 	cli_dbgmsg("GZip: Can't generate temporary file.\n");

 	gzclose(gd);

 	return ret;

     }
 

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

 	cli_dbgmsg("GZip: Unable to malloc %u bytes.\n", FILEBUFF);

 	gzclose(gd);

 	close(fd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	return CL_EMEM;

     }

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

 	size += bytes;
 

 	if(cli_checklimits("GZip", ctx, size + FILEBUFF, 0, 0)!=CL_CLEAN)
 	    break;

 	if(cli_writen(fd, buff, bytes) != bytes) {

 	    cli_dbgmsg("GZip: Can't write to file.\n");

 	    close(fd);

 	    if(!cli_leavetemps_flag)

 		cli_unlink(tmpname);

 	    free(tmpname);	

 	    gzclose(gd);

 	    free(buff);

 	    return CL_EGZIP;
 	}
     }
 

     free(buff);

     gzclose(gd);

 
     if(ret == CL_VIRUS) {

 	close(fd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	return ret;
     }
 

     lseek(fd, 0, SEEK_SET);

     if((ret = cli_magic_scandesc(fd, ctx)) == CL_VIRUS ) {
 	cli_dbgmsg("GZip: Infected with %s\n", *ctx->virname);

 	close(fd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	return CL_VIRUS;
     }

     close(fd);

     if(!cli_leavetemps_flag)

 	cli_unlink(tmpname);

     free(tmpname);	

 
     return ret;
 }
 
 #ifdef HAVE_BZLIB_H
 
 #ifdef NOBZ2PREFIX
 #define BZ2_bzReadOpen bzReadOpen
 #define BZ2_bzReadClose bzReadClose
 #define BZ2_bzRead bzRead
 #endif
 

 static int cli_scanbzip(int desc, cli_ctx *ctx)

 {
 	int fd, bytes, ret = CL_CLEAN, bzerror = 0;
 	short memlim = 0;

 	unsigned long int size = 0;

 	char *buff;

 	FILE *fs;

 	char *tmpname;

 	BZFILE *bfd;
 
 

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

 	cli_dbgmsg("Bzip: Can't open descriptor %d.\n", desc);

 	return CL_EBZIP;
     }
 

     if(ctx->limits)
 	if(ctx->limits->archivememlim)

 	    memlim = 1;
 

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

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

 	fclose(fs);

 	return CL_EBZIP;
     }
 

     if((ret = cli_gentempfd(NULL, &tmpname, &fd))) {

 	cli_dbgmsg("Bzip: Can't generate temporary file.\n");

 	BZ2_bzReadClose(&bzerror, bfd);

 	fclose(fs);

 	return ret;

     }
 

     if(!(buff = (char *) cli_malloc(FILEBUFF))) {
 	cli_dbgmsg("Bzip: Unable to malloc %u bytes.\n", FILEBUFF);

 	close(fd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	fclose(fs);
 	BZ2_bzReadClose(&bzerror, bfd);

 	return CL_EMEM;

     }

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

 	size += bytes;
 

 	if(cli_checklimits("Bzip", ctx, size + FILEBUFF, 0, 0)!=CL_CLEAN)
 	    break;

 	if(cli_writen(fd, buff, bytes) != bytes) {

 	    cli_dbgmsg("Bzip: Can't write to file.\n");

 	    BZ2_bzReadClose(&bzerror, bfd);

 	    close(fd);

 	    if(!cli_leavetemps_flag)

 		cli_unlink(tmpname);

 	    free(tmpname);	

 	    free(buff);

 	    fclose(fs);

 	    return CL_EGZIP;
 	}
     }
 

     free(buff);

     BZ2_bzReadClose(&bzerror, bfd);

 
     if(ret == CL_VIRUS) {

 	close(fd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	fclose(fs);
 	return ret;
     }
 

     lseek(fd, 0, SEEK_SET);

     if((ret = cli_magic_scandesc(fd, ctx)) == CL_VIRUS ) {
 	cli_dbgmsg("Bzip: Infected with %s\n", *ctx->virname);

     }

     close(fd);

     if(!cli_leavetemps_flag)

 	cli_unlink(tmpname);

     free(tmpname);	

     fclose(fs);

 
     return ret;
 }
 #endif
 

 static int cli_scanszdd(int desc, cli_ctx *ctx)

 {

 	int ofd, ret;

 	char *tmpname;

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

     if((ret = cli_gentempfd(NULL, &tmpname, &ofd))) {
 	cli_dbgmsg("MSEXPAND: Can't generate temporary file/descriptor\n");
 	return ret;

     }
 

     lseek(desc, 0, SEEK_SET);
     ret = cli_msexpand(desc, ofd, ctx);

     if(ret != CL_SUCCESS) { /* CL_VIRUS or some error */
 	close(ofd);

 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	

 	return ret;

     }
 

     cli_dbgmsg("MSEXPAND: Decompressed into %s\n", tmpname);
     lseek(ofd, 0, SEEK_SET);
     ret = cli_magic_scandesc(ofd, ctx);
     close(ofd);

     if(!cli_leavetemps_flag)

 	cli_unlink(tmpname);

     free(tmpname);	

     return ret;
 }
 

 static int cli_scanmscab(int desc, cli_ctx *ctx, off_t sfx_offset)

 {
 	char *tempname;

 	int ret;
 	unsigned int files = 0;
 	struct cab_archive cab;
 	struct cab_file *file;

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

     if((ret = cab_open(desc, sfx_offset, &cab)))
 	return ret;

     for(file = cab.files; file; file = file->next) {
 	files++;

 	if(cli_checklimits("CAB", ctx, file->length, 0, 0)!=CL_CLEAN)

 	    continue;
 

 	if(!(tempname = cli_gentemp(NULL))) {
 	    ret = CL_EMEM;
 	    break;
 	}

 	cli_dbgmsg("CAB: Extracting file %s to %s, size %u\n", file->name, tempname, file->length);
 	if((ret = cab_extract(file, tempname)))

 	    cli_dbgmsg("CAB: Failed to extract file: %s\n", cl_strerror(ret));
 	else
 	    ret = cli_scanfile(tempname, ctx);
 
 	if(!cli_leavetemps_flag)

 	    cli_unlink(tempname);

 	free(tempname);

 	if(ret == CL_VIRUS)
 	    break;
     }
 

     cab_free(&cab);

     return ret;
 }
 

 static int cli_vba_scandir(const char *dirname, cli_ctx *ctx)

 {

 	int ret = CL_CLEAN, i, fd, ofd, data_len;

 	vba_project_t *vba_project;

 	DIR *dd;
 	struct dirent *dent;

 #if defined(HAVE_READDIR_R_3) || defined(HAVE_READDIR_R_2)

 	union {
 	    struct dirent d;
 	    char b[offsetof(struct dirent, d_name) + NAME_MAX + 1];
 	} result;

 #endif

 	struct stat statbuf;

 	char *fname, *fullname;

 	unsigned char *data;
 

 
     cli_dbgmsg("VBADir: %s\n", dirname);

     if((vba_project = (vba_project_t *)cli_vba_readdir(dirname))) {

 	for(i = 0; i < vba_project->count; i++) {
 	    fullname = (char *) cli_malloc(strlen(vba_project->dir) + strlen(vba_project->name[i]) + 2);

 	    if(!fullname) {
 		ret = CL_EMEM;
 		break;
 	    }

 	    sprintf(fullname, "%s/%s", vba_project->dir, vba_project->name[i]);

 	    fd = open(fullname, O_RDONLY|O_BINARY);

 	    if(fd == -1) {

 		cli_dbgmsg("VBADir: Can't open file %s\n", fullname);

 		free(fullname);
 		ret = CL_EOPEN;
 		break;
 	    }
 	    free(fullname);

             cli_dbgmsg("VBADir: Decompress VBA project '%s'\n", vba_project->name[i]);

 	    data = (unsigned char *)cli_vba_inflate(fd, vba_project->offset[i], &data_len);

 	    close(fd);
 
 	    if(!data) {

 		cli_dbgmsg("VBADir: WARNING: VBA project '%s' decompressed to NULL\n", vba_project->name[i]);

 	    } else {

 		if(ctx->scanned)
 		    *ctx->scanned += data_len / CL_COUNT_PRECISION;

 		if(cli_scanbuff(data, data_len, ctx, CL_TYPE_MSOLE2) == 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);

     } else if ((fullname = cli_ppt_vba_read(dirname))) {

     	if(cli_scandir(fullname, ctx, 0) == CL_VIRUS) {

 	    ret = CL_VIRUS;
 	}

 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(fullname);

     	free(fullname);

     } else if ((vba_project = (vba_project_t *)cli_wm_readdir(dirname))) {

     	for (i = 0; i < vba_project->count; i++) {
 		fullname = (char *) cli_malloc(strlen(vba_project->dir) + strlen(vba_project->name[i]) + 2);

 		if(!fullname) {
 		    ret = CL_EMEM;
 		    break;
 		}

 		sprintf(fullname, "%s/%s", vba_project->dir, vba_project->name[i]);

 		fd = open(fullname, O_RDONLY|O_BINARY);

 		if(fd == -1) {

 			cli_dbgmsg("VBADir: Can't open file %s\n", fullname);

 			free(fullname);
 			ret = CL_EOPEN;
 			break;
 		}
 		free(fullname);

 		cli_dbgmsg("VBADir: Decompress WM project '%s' macro:%d key:%d length:%d\n", vba_project->name[i], i, vba_project->key[i], vba_project->length[i]);

 		data = (unsigned char *)cli_wm_decrypt_macro(fd, vba_project->offset[i], vba_project->length[i], vba_project->key[i]);

 		close(fd);
 		
 		if(!data) {

 			cli_dbgmsg("VBADir: WARNING: WM project '%s' macro %d decrypted to NULL\n", vba_project->name[i], i);

 		} else {

 			if(ctx->scanned)
 			    *ctx->scanned += vba_project->length[i] / CL_COUNT_PRECISION;

 			if(cli_scanbuff(data, vba_project->length[i], ctx, CL_TYPE_MSOLE2) == 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->key);
 	free(vba_project->length);
 	free(vba_project->offset);
 	free(vba_project->name);
 	free(vba_project->dir);
 	free(vba_project);

     }

     if(ret != CL_CLEAN)
     	return ret;

     /* Check directory for embedded OLE objects */
     fullname = (char *) cli_malloc(strlen(dirname) + 16);

     if(!fullname)
 	return CL_EMEM;
 

     sprintf(fullname, "%s/_1_Ole10Native", dirname);

     fd = open(fullname, O_RDONLY|O_BINARY);

     free(fullname);
     if (fd >= 0) {
     	ofd = cli_decode_ole_object(fd, dirname);
 	if (ofd >= 0) {

 		ret = cli_scandesc(ofd, ctx, 0, 0, NULL, AC_SCAN_VIR);

 		close(ofd);
 	}
 	close(fd);
 	if(ret != CL_CLEAN)
 	    return ret;
     }
 

     if((dd = opendir(dirname)) != NULL) {

 #ifdef HAVE_READDIR_R_3

 	while(!readdir_r(dd, &result.d, &dent) && dent) {

 #elif defined(HAVE_READDIR_R_2)

 	while((dent = (struct dirent *) readdir_r(dd, &result.d))) {

 #else

 	while((dent = readdir(dd))) {

 #endif

 #if	(!defined(C_CYGWIN)) && (!defined(C_INTERIX)) && (!defined(C_WINDOWS))

 	    if(dent->d_ino)
 #endif
 	    {

 		if(strcmp(dent->d_name, ".") && strcmp(dent->d_name, "..")) {
 		    /* build the full name */

 		    fname = cli_malloc(strlen(dirname) + strlen(dent->d_name) + 2);

 		    if(!fname) {
 			ret = CL_EMEM;
 			break;
 		    }

 		    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))

 			    if (cli_vba_scandir(fname, ctx) == CL_VIRUS) {

 			    	ret = CL_VIRUS;
 				free(fname);
 				break;
 			    }

 		    }
 		    free(fname);
 		}
 	    }
 	}
     } else {

 	cli_dbgmsg("VBADir: Can't open directory %s.\n", dirname);

 	return CL_EOPEN;
     }
 
     closedir(dd);

     return ret;
 }
 

 static int cli_scanhtml(int desc, cli_ctx *ctx)

 {
 	char *tempname, fullname[1024];
 	int ret=CL_CLEAN, fd;

 	struct stat sb;

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

     if(fstat(desc, &sb) == -1) {
         cli_errmsg("cli_scanhtml: fstat() failed for descriptor %d\n", desc);
 	return CL_EIO;
     }
 
     /* Because HTML detection is FP-prone and html_normalise_fd() needs to
      * mmap the file don't normalise files larger than 10 MB.
      */

     if(sb.st_size > 10485760) {
 	cli_dbgmsg("cli_scanhtml: exiting (file larger than 10 MB)\n");
 	return CL_CLEAN;
     }
 

     if(!(tempname = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(tempname, 0700)) {

         cli_errmsg("cli_scanhtml: Can't create temporary directory %s\n", tempname);

 	free(tempname);

         return CL_ETMPDIR;
     }
 

     cli_dbgmsg("cli_scanhtml: using tempdir %s\n", tempname);
 

     html_normalise_fd(desc, tempname, NULL, ctx->dconf);

     snprintf(fullname, 1024, "%s/nocomment.html", tempname);

     fd = open(fullname, O_RDONLY|O_BINARY);

     if (fd >= 0) {

 	    ret = cli_scandesc(fd, ctx, CL_TYPE_HTML, 0, NULL, AC_SCAN_VIR);

 	    close(fd);
     }
 

     if(ret == CL_CLEAN && sb.st_size < 2097152) {
 	    /* limit to 2 MB, we're not interesting in scanning large files in notags form */
 	    /* TODO: don't even create notags if file is over 2 MB */

 	    snprintf(fullname, 1024, "%s/notags.html", tempname);
 	    fd = open(fullname, O_RDONLY|O_BINARY);
 	    if(fd >= 0) {

 		    ret = cli_scandesc(fd, ctx, CL_TYPE_HTML, 0, NULL, AC_SCAN_VIR);

 		    close(fd);
 	    }

     }
 
     if (ret == CL_CLEAN) {

 	snprintf(fullname, 1024, "%s/rfc2397", tempname);
 	ret = cli_scandir(fullname, ctx, 0);

     }
 
     if(!cli_leavetemps_flag)
         cli_rmdirs(tempname);
 
     free(tempname);
     return ret;
 }
 

 static int cli_scanscript(int desc, cli_ctx *ctx)
 {
 	unsigned char buff[FILEBUFF];

 	unsigned char* normalized;

 	struct text_norm_state state;
 	struct stat sb;
 	char *tmpname = NULL;
 	int ofd = -1, ret;
 	ssize_t nread;
 

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

 
 	if(fstat(desc, &sb) == -1) {
 		cli_errmsg("cli_scanscript: fstat() failed for descriptor %d\n", desc);
 		return CL_EIO;
 	}
 
 	/* don't normalize files that are too large */

 	if(sb.st_size > 524288) {

 		cli_dbgmsg("cli_scanscript: exiting (file larger than 400 kB)\n");

 		return CL_CLEAN;
 	}
 
 	/* dump to disk only if explicitly asked to,
 	 * otherwise we can process just in-memory */
 	if(cli_leavetemps_flag) {
 		if((ret = cli_gentempfd(NULL, &tmpname, &ofd))) {
 			cli_dbgmsg("cli_scanscript: Can't generate temporary file/descriptor\n");
 			return ret;
 		}
 	}
 

 	if(!(normalized = cli_malloc(SCANBUFF))) {
 		cli_dbgmsg("cli_scanscript: Unable to malloc %u bytes\n", SCANBUFF);
 		return CL_EMEM;
 	}
 
 	text_normalize_init(&state, normalized, SCANBUFF);

 	ret = CL_CLEAN;
 
 	do {
 		nread = cli_readn(desc, buff, sizeof(buff));
 		if(nread <= 0 || state.out_pos + nread > state.out_len) {
 			/* flush if error/EOF, or too little buffer space left */
 			if((ofd != -1) && (write(ofd, state.out, state.out_pos) == -1)) {
 				cli_errmsg("cli_scanscript: can't write to file %s\n",tmpname);
 				close(ofd);
 				ofd = -1;
 				/* we can continue to scan in memory */
 			}
 			/* when we flush the buffer also scan */

 			if(cli_scanbuff(state.out, state.out_pos, ctx, CL_TYPE_TEXT_ASCII) == CL_VIRUS) {

 				ret = CL_VIRUS;
 				break;
 			}
 			text_normalize_reset(&state);
 		}

 		if(nread > 0 && (text_normalize_buffer(&state, buff, nread) != nread)) {

 			cli_dbgmsg("cli_scanscript: short read during normalizing\n");
 		}
 		/* used a do {}while() here, since we need to flush our buffers at the end,
 		 * and using while(){} loop would mean code duplication */
 	} while (nread > 0);
 
 	if(cli_leavetemps_flag) {
 		free(tmpname);
 		close(ofd);
 	}

 	free(normalized);

 
 	return ret;
 }
 

 static int cli_scanhtml_utf16(int desc, cli_ctx *ctx)
 {
 	char *tempname, buff[512], *decoded;
 	int ret = CL_CLEAN, fd, bytes;
 
 
     cli_dbgmsg("in cli_scanhtml_utf16()\n");
 

     if(!(tempname = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if((fd = open(tempname, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, S_IRWXU)) < 0) {
 	cli_errmsg("cli_scanhtml_utf16: Can't create file %s\n", tempname);
 	free(tempname);
 	return CL_EIO;
     }
 

     cli_dbgmsg("cli_scanhtml_utf16: using tempfile %s\n", tempname);
 

     while((bytes = read(desc, buff, sizeof(buff))) > 0) {
 	decoded = cli_utf16toascii(buff, bytes);
 	if(decoded) {
 	    if(write(fd, decoded, strlen(decoded)) == -1) {
 		cli_errmsg("cli_scanhtml_utf16: Can't write to file %s\n", tempname);
 		free(decoded);

 		cli_unlink(tempname);

 		free(tempname);
 		close(fd);
 		return CL_EIO;
 	    }
 	    free(decoded);
 	}
     }
 
     lseek(fd, 0, SEEK_SET);
     ret = cli_scanhtml(fd, ctx);
     close(fd);
 
     if(!cli_leavetemps_flag)

 	cli_unlink(tempname);

     else
 	cli_dbgmsg("cli_scanhtml_utf16: Decoded HTML data saved in %s\n", tempname);
     free(tempname);
 
     return ret;
 }
 

 static int cli_scanole2(int desc, cli_ctx *ctx)

 {

 	char *dir;
 	int ret = CL_CLEAN;

     cli_dbgmsg("in cli_scanole2()\n");
 

     if(ctx->limits && ctx->limits->maxreclevel && ctx->recursion >= ctx->limits->maxreclevel)
         return CL_EMAXREC;
 

     /* generate the temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {

 	cli_dbgmsg("OLE2: Can't create temporary directory %s\n", dir);

 	free(dir);

 	return CL_ETMPDIR;
     }
 

     if((ret = cli_ole2_extract(desc, dir, ctx))) {

 	cli_dbgmsg("OLE2: %s\n", cl_strerror(ret));

 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(dir);

 	free(dir);

 	ctx->recursion--;

 	return ret;
     }
 

     ctx->recursion++;
 

     if((ret = cli_vba_scandir(dir, ctx)) != CL_VIRUS) {

 	if(cli_scandir(dir, ctx, 0) == CL_VIRUS) {

 	    ret = CL_VIRUS;

 	}
     }
 

     ctx->recursion--;
 

     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);

     free(dir);
     return ret;

 }
 

 static int cli_scantar(int desc, cli_ctx *ctx, unsigned int posix)

 {
 	char *dir;
 	int ret = CL_CLEAN;
 
 
     cli_dbgmsg("in cli_scantar()\n");
 
     /* generate temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {
 	cli_errmsg("Tar: Can't create temporary directory %s\n", dir);

 	free(dir);

 	return CL_ETMPDIR;
     }
 

     ret = cli_untar(dir, desc, posix, ctx);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;
 }
 

 static int cli_scanbinhex(int desc, cli_ctx *ctx)

 {
 	char *dir;
 	int ret = CL_CLEAN;
 
 
     cli_dbgmsg("in cli_scanbinhex()\n");
 
     /* generate temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;

 
     if(mkdir(dir, 0700)) {
 	cli_errmsg("Binhex: Can't create temporary directory %s\n", dir);

 	free(dir);

 	return CL_ETMPDIR;
     }
 
     if((ret = cli_binhex(dir, desc)))
 	cli_dbgmsg("Binhex: %s\n", cl_strerror(ret));
     else

 	ret = cli_scandir(dir, ctx, 0);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;
 }
 

 static int cli_scanmschm(int desc, cli_ctx *ctx)

 {

 	int ret = CL_CLEAN, rc;
 	chm_metadata_t metadata;
 	char *dir;

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

      /* generate the temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("CHM: Can't create temporary directory %s\n", dir);
 	free(dir);

 	return CL_ETMPDIR;
     }
 

     ret = cli_chm_open(desc, dir, &metadata);
     if (ret != CL_SUCCESS) {
 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(dir);
 	free(dir);
 	cli_dbgmsg("CHM: Error: %s\n", cl_strerror(ret));
 	return ret;
     }
 
    do {
 	ret = cli_chm_prepare_file(desc, dir, &metadata);
 	if (ret != CL_SUCCESS) {
 	   break;
 	}
 	ret = cli_chm_extract_file(desc, dir, &metadata);
 	if (ret == CL_SUCCESS) {
 	    lseek(metadata.ofd, 0, SEEK_SET);
 	    rc = cli_magic_scandesc(metadata.ofd, ctx);
 	    close(metadata.ofd);
 	    if (rc == CL_VIRUS) {
 		cli_dbgmsg("CHM: infected with %s\n",*ctx->virname);
 		ret = CL_VIRUS;
 		break;
 	    }
 	}

     } while(ret == CL_SUCCESS);

 
     cli_chm_close(&metadata);
    

     if(!cli_leavetemps_flag)

 	cli_rmdirs(dir);
 
     free(dir);
 
     cli_dbgmsg("CHM: Exit code: %d\n", ret);
     if (ret == CL_BREAK)
 	ret = CL_CLEAN;

 
     return ret;
 }
 

 static int cli_scanscrenc(int desc, cli_ctx *ctx)

 {
 	char *tempname;
 	int ret = CL_CLEAN;
 
     cli_dbgmsg("in cli_scanscrenc()\n");
 

     if(!(tempname = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(tempname, 0700)) {
 	cli_dbgmsg("CHM: Can't create temporary directory %s\n", tempname);

 	free(tempname);

 	return CL_ETMPDIR;
     }
 
     if (html_screnc_decode(desc, tempname))

 	ret = cli_scandir(tempname, ctx, 0);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(tempname);
 
     free(tempname);
     return ret;
 }

 static int cli_scanriff(int desc, const char **virname)

 {
 	int ret = CL_CLEAN;
 
     if(cli_check_riff_exploit(desc) == 2) {
 	ret = CL_VIRUS;
 	*virname = "Exploit.W32.MS05-002";
     }
 
     return ret;
 }
 

 static int cli_scanjpeg(int desc, const char **virname)
 {
 	int ret = CL_CLEAN;
 
     if(cli_check_jpeg_exploit(desc) == 1) {
 	ret = CL_VIRUS;
 	*virname = "Exploit.W32.MS04-028";
     }
 
     return ret;
 }
 

 static int cli_scancryptff(int desc, cli_ctx *ctx)

 {

 	int ret = CL_CLEAN, ndesc;
 	unsigned int length, i;

 	unsigned char *src = NULL, *dest = NULL;
 	char *tempfile;
 	struct stat sb;
 
 
     if(fstat(desc, &sb) == -1) {

 	cli_errmsg("CryptFF: Can't fstat descriptor %d\n", desc);

 	return CL_EIO;
     }
 
     /* Skip the CryptFF file header */
     if(lseek(desc, 0x10, SEEK_SET) < 0) {

 	cli_errmsg("CryptFF: Can't lseek descriptor %d\n", desc);

 	return ret;
     }
 
     length = sb.st_size  - 0x10;
  

     if((dest = (unsigned char *) cli_malloc(length)) == NULL) {

 	cli_dbgmsg("CryptFF: Can't allocate memory\n");
         return CL_EMEM;
     }
 

     if((src = (unsigned char *) cli_malloc(length)) == NULL) {

 	cli_dbgmsg("CryptFF: Can't allocate memory\n");
 	free(dest);
         return CL_EMEM;
     }
 
     if((unsigned int) read(desc, src, length) != length) {
 	cli_dbgmsg("CryptFF: Can't read from descriptor %d\n", desc);
 	free(dest);
 	free(src);
 	return CL_EIO;
     }
 
     for(i = 0; i < length; i++)
 	dest[i] = src[i] ^ (unsigned char) 0xff;
 
     free(src);
 

     if(!(tempfile = cli_gentemp(NULL))) {
 	free(dest);
 	return CL_EMEM;
     }
 

     if((ndesc = open(tempfile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, S_IRWXU)) < 0) {

 	cli_errmsg("CryptFF: Can't create file %s\n", tempfile);
 	free(dest);
 	free(tempfile);
 	return CL_EIO;
     }
 
     if(write(ndesc, dest, length) == -1) {
 	cli_dbgmsg("CryptFF: Can't write to descriptor %d\n", ndesc);
 	free(dest);
 	close(ndesc);
 	free(tempfile);
 	return CL_EIO;
     }
 
     free(dest);
 
     lseek(ndesc, 0, SEEK_SET);
 
     cli_dbgmsg("CryptFF: Scanning decrypted data\n");
 

     if((ret = cli_magic_scandesc(ndesc, ctx)) == CL_VIRUS)
 	cli_dbgmsg("CryptFF: Infected with %s\n", *ctx->virname);

 
     close(ndesc);
 
     if(cli_leavetemps_flag)
 	cli_dbgmsg("CryptFF: Decompressed data saved in %s\n", tempfile);
     else

 	cli_unlink(tempfile);

 
     free(tempfile);
     return ret;
 }
 

 static int cli_scanpdf(int desc, cli_ctx *ctx)

 {
 	int ret;
 	char *dir = cli_gentemp(NULL);
 

     if(!dir)
 	return CL_EMEM;

 
     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("Can't create temporary directory for PDF file %s\n", dir);
 	free(dir);
 	return CL_ETMPDIR;
     }
 

     ret = cli_pdf(dir, desc, ctx);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;
 }
 

 static int cli_scantnef(int desc, cli_ctx *ctx)

 {
 	int ret;
 	char *dir = cli_gentemp(NULL);
 

     if(!dir)
 	return CL_EMEM;

 
     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("Can't create temporary directory for tnef file %s\n", dir);
 	free(dir);
 	return CL_ETMPDIR;
     }
 
     ret = cli_tnef(dir, desc);
 
     if(ret == CL_CLEAN)

 	ret = cli_scandir(dir, ctx, 0);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;
 }
 

 static int cli_scanuuencoded(int desc, cli_ctx *ctx)

 {
 	int ret;
 	char *dir = cli_gentemp(NULL);
 

     if(!dir)
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("Can't create temporary directory for uuencoded file %s\n", dir);
 	free(dir);
 	return CL_ETMPDIR;
     }
 
     ret = cli_uuencode(dir, desc);
 
     if(ret == CL_CLEAN)

 	ret = cli_scandir(dir, ctx, 0);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;
 }
 

 static int cli_scanmail(int desc, cli_ctx *ctx)

 {
 	char *dir;
 	int ret;
 
 

     cli_dbgmsg("Starting cli_scanmail(), recursion = %u\n", ctx->recursion);

     /* generate the temporary directory */

     if(!(dir = cli_gentemp(NULL)))
 	return CL_EMEM;
 

     if(mkdir(dir, 0700)) {
 	cli_dbgmsg("Mail: Can't create temporary directory %s\n", dir);
 	free(dir);
 	return CL_ETMPDIR;
     }

     /*
      * Extract the attachments into the temporary directory
      */

     if((ret = cli_mbox(dir, desc, ctx))) {

 	if(!cli_leavetemps_flag)
 	    cli_rmdirs(dir);

 	free(dir);
 	return ret;

     }
 

     ret = cli_scandir(dir, ctx, CL_TYPE_MAIL);

 
     if(!cli_leavetemps_flag)
 	cli_rmdirs(dir);
 
     free(dir);
     return ret;

 }
 

 static int cli_scanembpe(int desc, cli_ctx *ctx)
 {
 	int fd, bytes, ret = CL_CLEAN;
 	unsigned long int size = 0;
 	char buff[512];
 	char *tmpname;
 
 
     tmpname = cli_gentemp(NULL);
     if(!tmpname)
 	return CL_EMEM;
 
     if((fd = open(tmpname, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, S_IRWXU)) < 0) {
 	cli_errmsg("cli_scanembpe: Can't create file %s\n", tmpname);
 	free(tmpname);
 	return CL_EIO;
     }
 
     while((bytes = read(desc, buff, sizeof(buff))) > 0) {
 	size += bytes;
 

 	if(cli_checklimits("cli_scanembpe", ctx, size + sizeof(buff), 0, 0)!=CL_CLEAN)

 	    break;
 
 	if(cli_writen(fd, buff, bytes) != bytes) {
 	    cli_dbgmsg("cli_scanembpe: Can't write to temporary file\n");
 	    close(fd);
 	    if(!cli_leavetemps_flag)

 		cli_unlink(tmpname);

 	    free(tmpname);	
 	    return CL_EIO;
 	}
     }
 

     ctx->recursion++;

     lseek(fd, 0, SEEK_SET);
     if((ret = cli_magic_scandesc(fd, ctx)) == CL_VIRUS) {
 	cli_dbgmsg("cli_scanembpe: Infected with %s\n", *ctx->virname);
 	close(fd);
 	if(!cli_leavetemps_flag)

 	    cli_unlink(tmpname);

 	free(tmpname);	
 	return CL_VIRUS;
     }

     ctx->recursion--;

 
     close(fd);
     if(!cli_leavetemps_flag)

 	cli_unlink(tmpname);

     free(tmpname);
 
     /* intentionally ignore possible errors from cli_magic_scandesc */
     return CL_CLEAN;
 }
 

 static int cli_scanraw(int desc, cli_ctx *ctx, cli_file_t type, uint8_t typercg, cli_file_t *dettype)

 {

 	int ret = CL_CLEAN, nret = CL_CLEAN;

 	struct cli_matched_type *ftoffset = NULL, *fpt;

 	uint32_t lastzip, lastrar;

 	struct cli_exe_info peinfo;

 	unsigned int acmode = AC_SCAN_VIR, break_loop = 0;

     if(typercg) switch(type) {

 	case CL_TYPE_TEXT_ASCII:

 	case CL_TYPE_MSEXE:

 	case CL_TYPE_ZIP:

 	    acmode |= AC_SCAN_FT;

 	default:

 	    break;

     }
 
     if(lseek(desc, 0, SEEK_SET) < 0) {
 	cli_errmsg("cli_scanraw: lseek() failed\n");
 	return CL_EIO;
     }
 

     ret = cli_scandesc(desc, ctx, type == CL_TYPE_TEXT_ASCII ? 0 : type, 0, &ftoffset, acmode);

     if(ret >= CL_TYPENO) {

 /*

 	if(type == CL_TYPE_TEXT_ASCII) {

 	    lseek(desc, 0, SEEK_SET);
 
 	    nret = cli_scandesc(desc, ctx, 0, ret, 1, NULL);
 	    if(nret == CL_VIRUS)
 		cli_dbgmsg("%s found in descriptor %d when scanning file type %u\n", *ctx->virname, desc, ret);
 	}

 */

 	if(nret != CL_VIRUS && (type == CL_TYPE_MSEXE || type == CL_TYPE_ZIP)) {
 	    lastzip = lastrar = 0xdeadbeef;
 	    fpt = ftoffset;
 	    while(fpt) {
 		switch(fpt->type) {
 		    case CL_TYPE_RARSFX:

 #ifdef ENABLE_UNRAR

 			if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_RAR)) {
 			    cli_dbgmsg("RAR-SFX signature found at %u\n", (unsigned int) fpt->offset);
 			    nret = cli_scanrar(desc, ctx, fpt->offset, &lastrar);
 			}

 #endif

 			break;

 		    case CL_TYPE_ZIPSFX:

 			if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_ZIP) && fpt->offset) {

 			    cli_dbgmsg("ZIP-SFX signature found at %u\n", (unsigned int) fpt->offset);

 			    nret = cli_unzip_single(desc, ctx, fpt->offset);

 			}
 			break;

 		    case CL_TYPE_CABSFX:
 			if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_CAB)) {
 			    cli_dbgmsg("CAB-SFX signature found at %u\n", (unsigned int) fpt->offset);
 			    nret = cli_scanmscab(desc, ctx, fpt->offset);

 			}

 			break;

 		    case CL_TYPE_ARJSFX:
 			if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_ARJ)) {
 			    cli_dbgmsg("ARJ-SFX signature found at %u\n", (unsigned int) fpt->offset);
 			    nret = cli_scanarj(desc, ctx, fpt->offset, &lastrar);
 			}
 			break;

 		    case CL_TYPE_NULSFT:

 		        if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_NSIS) && fpt->offset > 4) {

 			    cli_dbgmsg("NSIS signature found at %u\n", (unsigned int) fpt->offset-4);
 			    nret = cli_scannulsft(desc, ctx, fpt->offset - 4);
 			}
 			break;
 

 		    case CL_TYPE_AUTOIT:

 		        if(SCAN_ARCHIVE && type == CL_TYPE_MSEXE && (DCONF_ARCH & ARCH_CONF_AUTOIT)) {

 			    cli_dbgmsg("AUTOIT signature found at %u\n", (unsigned int) fpt->offset);
 			    nret = cli_scanautoit(desc, ctx, fpt->offset + 23);
 			}
 			break;
 

 		    case CL_TYPE_MSEXE:
 			if(SCAN_PE && ctx->dconf->pe && fpt->offset) {

 			    cli_dbgmsg("PE signature found at %u\n", (unsigned int) fpt->offset);
 			    memset(&peinfo, 0, sizeof(struct cli_exe_info));
 			    peinfo.offset = fpt->offset;
 			    lseek(desc, fpt->offset, SEEK_SET);
 			    if(cli_peheader(desc, &peinfo) == 0) {
 				cli_dbgmsg("*** Detected embedded PE file ***\n");
 				if(peinfo.section)
 				    free(peinfo.section);
 
 				lseek(desc, fpt->offset, SEEK_SET);

 				nret = cli_scanembpe(desc, ctx);

 				break_loop = 1; /* we can stop here and other
 						 * embedded executables will
 						 * be found recursively
 						 * through the above call
 						 */

 			    }
 			}

 			break;
 
 		    default:
 			cli_warnmsg("cli_scanraw: Type %u not handled in fpt loop\n", fpt->type);

 		}

 
 		if(nret == CL_VIRUS || break_loop)
 		    break;
 
 		fpt = fpt->next;
 	    }
 	}
 

 	ctx->recursion++;

 
 	if(nret != CL_VIRUS) switch(ret) {
 	    case CL_TYPE_HTML:

 		if(SCAN_HTML && type == CL_TYPE_TEXT_ASCII && (DCONF_DOC & DOC_CONF_HTML)) {
 		    *dettype = CL_TYPE_HTML;

 		    nret = cli_scanhtml(desc, ctx);

 		}

 		break;
 
 	    case CL_TYPE_MAIL:

 		if(SCAN_MAIL && type == CL_TYPE_TEXT_ASCII && (DCONF_MAIL & MAIL_CONF_MBOX))

 		    nret = cli_scanmail(desc, ctx);

 		break;
 

 	    default:
 		break;
 	}

 	ctx->recursion--;

 	ret = nret;

     }
 

     while(ftoffset) {
 	fpt = ftoffset;
 	ftoffset = ftoffset->next;
 	free(fpt);
     }
 
     if(ret == CL_VIRUS)
 	cli_dbgmsg("%s found in descriptor %d\n", *ctx->virname, desc);
 

     return ret;
 }
 

 int cli_magic_scandesc(int desc, cli_ctx *ctx)

 {

 	int ret = CL_CLEAN;

 	cli_file_t type, dettype = 0;

 	struct stat sb;

 	uint8_t typercg = 1;

 
 
     if(fstat(desc, &sb) == -1) {

 	cli_errmsg("magic_scandesc: Can't fstat descriptor %d\n", desc);

 	return CL_EIO;
     }

     if(sb.st_size <= 5) {

 	cli_dbgmsg("Small data (%u bytes)\n", (unsigned int) sb.st_size);

 	return CL_CLEAN;
     }

     if(!ctx->engine) {

 	cli_errmsg("CRITICAL: engine == NULL\n");

 	return CL_EMALFDB;

     }
 

     if(!ctx->options) { /* raw mode (stdin, etc.) */

 	cli_dbgmsg("Raw mode: No support for special files\n");

 	if((ret = cli_scandesc(desc, ctx, 0, 0, NULL, AC_SCAN_VIR)) == CL_VIRUS)

 	    cli_dbgmsg("%s found in descriptor %d\n", *ctx->virname, desc);

 	return ret;
     }
 

     if(cli_updatelimits(ctx, sb.st_size)!=CL_CLEAN)
         return CL_CLEAN;

     if((SCAN_MAIL || SCAN_ARCHIVE) && ctx->limits && ctx->limits->maxreclevel && ctx->recursion > ctx->limits->maxreclevel) {
         cli_dbgmsg("Archive recursion limit exceeded (level = %u).\n", ctx->recursion);
 	return CL_CLEAN;
     }

     lseek(desc, 0, SEEK_SET);

     type = cli_filetype2(desc, ctx->engine);

     if(type == CL_TYPE_ERROR) {
 	cli_dbgmsg("cli_magic_scandesc: cli_filetype2 returned CL_TYPE_ERROR\n");
 	return CL_EIO;
     }

     lseek(desc, 0, SEEK_SET);

     if(type != CL_TYPE_IGNORED && ctx->engine->sdb) {

 	if((ret = cli_scanraw(desc, ctx, type, 0, &dettype)) == CL_VIRUS)

 	    return CL_VIRUS;
 	lseek(desc, 0, SEEK_SET);
     }
 

     ctx->recursion++;

     switch(type) {

 	case CL_TYPE_IGNORED:
 	    break;
 

 	case CL_TYPE_RAR:

 #ifdef ENABLE_UNRAR

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_RAR))

 		ret = cli_scanrar(desc, ctx, 0, NULL);

 #else
 	    cli_warnmsg("RAR code not compiled-in\n");

 #endif

 	    break;

 	case CL_TYPE_ZIP:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_ZIP))

 		ret = cli_unzip(desc, ctx);

 	    break;

 	case CL_TYPE_GZ:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_GZ))

 		ret = cli_scangzip(desc, ctx);

 	    break;

 	case CL_TYPE_BZ:

 #ifdef HAVE_BZLIB_H

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_BZ))

 		ret = cli_scanbzip(desc, ctx);

 #endif

 	    break;

 	case CL_TYPE_ARJ:
 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_ARJ))
 		ret = cli_scanarj(desc, ctx, 0, NULL);
 	    break;

         case CL_TYPE_NULSFT:

 	  if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_NSIS))

 		ret = cli_scannulsft(desc, ctx, 0);
 	    break;

 
         case CL_TYPE_AUTOIT:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_AUTOIT))

 		ret = cli_scanautoit(desc, ctx, 23);
 	    break;

 	case CL_TYPE_MSSZDD:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_SZDD))

 		ret = cli_scanszdd(desc, ctx);

 	    break;

 	case CL_TYPE_MSCAB:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_CAB))

 		ret = cli_scanmscab(desc, ctx, 0);

 	    break;
 

 	case CL_TYPE_HTML:

 	    if(SCAN_HTML && (DCONF_DOC & DOC_CONF_HTML))

 		ret = cli_scanhtml(desc, ctx);
 	    break;
 
 	case CL_TYPE_HTML_UTF16:

 	    if(SCAN_HTML && (DCONF_DOC & DOC_CONF_HTML))

 		ret = cli_scanhtml_utf16(desc, ctx);
 	    break;
 

 	case CL_TYPE_SCRIPT:

 	    if((DCONF_DOC & DOC_CONF_SCRIPT) && dettype != CL_TYPE_HTML)

 	        ret = cli_scanscript(desc, ctx);
 	    break;
 

 	case CL_TYPE_RTF:

 	    if(SCAN_ARCHIVE && (DCONF_DOC & DOC_CONF_RTF))

 		ret = cli_scanrtf(desc, ctx);

 	    break;
 

 	case CL_TYPE_MAIL:

 	    if(SCAN_MAIL && (DCONF_MAIL & MAIL_CONF_MBOX))

 		ret = cli_scanmail(desc, ctx);

 	    break;

 	case CL_TYPE_TNEF:

 	    if(SCAN_MAIL && (DCONF_MAIL & MAIL_CONF_TNEF))

 		ret = cli_scantnef(desc, ctx);

 	    break;
 

 	case CL_TYPE_UUENCODED:

 	    if(DCONF_OTHER & OTHER_CONF_UUENC)

 		ret = cli_scanuuencoded(desc, ctx);

 	    break;
 

 	case CL_TYPE_MSCHM:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_CHM))

 		ret = cli_scanmschm(desc, ctx);

 	    break;
 

 	case CL_TYPE_MSOLE2:

 	    if(SCAN_OLE2 && (DCONF_ARCH & ARCH_CONF_OLE2))

 		ret = cli_scanole2(desc, ctx);

 	    break;

 	case CL_TYPE_POSIX_TAR:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_TAR))

 		ret = cli_scantar(desc, ctx, 1);

 	    break;
 
 	case CL_TYPE_OLD_TAR:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_TAR))

 		ret = cli_scantar(desc, ctx, 0);

 	    break;
 
 	case CL_TYPE_BINHEX:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_BINHEX))

 		ret = cli_scanbinhex(desc, ctx);

 	    break;
 

 	case CL_TYPE_SCRENC:

 	    if(DCONF_OTHER & OTHER_CONF_SCRENC)
 		ret = cli_scanscrenc(desc, ctx);

 	    break;
 
 	case CL_TYPE_RIFF:

 	    if(SCAN_ALGO && (DCONF_OTHER & OTHER_CONF_RIFF))

 		ret = cli_scanriff(desc, ctx->virname);

 	    break;
 

 	case CL_TYPE_GRAPHICS:

 	    if(SCAN_ALGO && (DCONF_OTHER & OTHER_CONF_JPEG))

 		ret = cli_scanjpeg(desc, ctx->virname);

 	    break;
 

         case CL_TYPE_PDF: /* FIXMELIMITS: pdf should be an archive! */

 	    if(SCAN_PDF && (DCONF_DOC & DOC_CONF_PDF))

 		ret = cli_scanpdf(desc, ctx);

 	    break;
 

 	case CL_TYPE_CRYPTFF:

 	    if(DCONF_OTHER & OTHER_CONF_CRYPTFF)
 		ret = cli_scancryptff(desc, ctx);

 	    break;
 

 	case CL_TYPE_ELF:

 	    if(SCAN_ELF && ctx->dconf->elf)

 		ret = cli_scanelf(desc, ctx);

 	    break;
 

 	case CL_TYPE_SIS:

 	    if(SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_SIS))

 		ret = cli_scansis(desc, ctx);

 	    break;
 

 	case CL_TYPE_BINARY_DATA:

 	    ret = cli_check_mydoom_log(desc, ctx->virname);

 	    break;

 
 	default:
 	    break;

     }
 

     ctx->recursion--;

     if(type == CL_TYPE_ZIP && SCAN_ARCHIVE && (DCONF_ARCH & ARCH_CONF_ZIP)) {
 	if(sb.st_size > 1048576) {
 	    cli_dbgmsg("cli_magic_scandesc: Not checking for embedded PEs (zip file > 1 MB)\n");
 	    typercg = 0;
 	}
     }
 

     /* CL_TYPE_HTML: raw HTML files are not scanned, unless safety measure activated via DCONF */
     if(type != CL_TYPE_IGNORED && (type != CL_TYPE_HTML || !(DCONF_DOC & DOC_CONF_HTML_SKIPRAW)) && ret != CL_VIRUS && !ctx->engine->sdb) {

 	if(cli_scanraw(desc, ctx, type, typercg, &dettype) == CL_VIRUS)

 	    return CL_VIRUS;

     }

     ctx->recursion++;

     lseek(desc, 0, SEEK_SET);
     switch(type) {

 	case CL_TYPE_TEXT_ASCII:
 	    if((DCONF_DOC & DOC_CONF_SCRIPT) && dettype != CL_TYPE_HTML)
 	        ret = cli_scanscript(desc, ctx);
 	    break;

 	/* Due to performance reasons all executables were first scanned
 	 * in raw mode. Now we will try to unpack them
 	 */

 	case CL_TYPE_MSEXE:

 	    if(SCAN_PE && ctx->dconf->pe)

 		ret = cli_scanpe(desc, ctx);

 	    break;

 
 	default:
 	    break;

     }

     ctx->recursion--;

     if(ret == CL_EFORMAT) {

 	cli_dbgmsg("Descriptor[%d]: %s\n", desc, cl_strerror(CL_EFORMAT));

 	return CL_CLEAN;
     } else {
 	return ret;
     }

 }
 

 int cl_scandesc(int desc, const char **virname, unsigned long int *scanned, const struct cl_engine *engine, const struct cl_limits *limits, unsigned int options)

 {

     cli_ctx ctx;

     struct cl_limits l_limits;

     int rc;

 
     memset(&ctx, '\0', sizeof(cli_ctx));
     ctx.engine = engine;
     ctx.virname = virname;
     ctx.scanned = scanned;
     ctx.options = options;

     ctx.found_possibly_unwanted = 0;

     ctx.dconf = (struct cli_dconf *) engine->dconf;

     if (limits) {
       ctx.limits = &l_limits;
       memcpy(&l_limits, limits, sizeof(struct cl_limits));
     }

     rc = cli_magic_scandesc(desc, &ctx);
     if(rc == CL_CLEAN && ctx.found_possibly_unwanted)
     	rc = CL_VIRUS;
     return rc;

 }
 

 static int cli_scanfile(const char *filename, cli_ctx *ctx)

 {
 	int fd, ret;
 

     /* internal version of cl_scanfile with arec/mrec preserved */

     if((fd = open(filename, O_RDONLY|O_BINARY)) == -1)

 	return CL_EOPEN;
 

     ret = cli_magic_scandesc(fd, ctx);

 
     close(fd);
     return ret;
 }
 

 int cl_scanfile(const char *filename, const char **virname, unsigned long int *scanned, const struct cl_engine *engine, const struct cl_limits *limits, unsigned int options)

 {
 	int fd, ret;
 

     if((fd = open(filename, O_RDONLY|O_BINARY)) == -1)

 	return CL_EOPEN;
 

     ret = cl_scandesc(fd, virname, scanned, engine, limits, options);

     close(fd);
 
     return ret;
 }