mirror of https://github.com/Cisco-Talos/clamav
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
681 lines
17 KiB
681 lines
17 KiB
/*
|
|
* Copyright (C) 2002, 2003 Tomasz Kojm <zolw@konarski.edu.pl>
|
|
*
|
|
* 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;
|
|
//pthread_mutex_t cli_mbox_mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
//int cli_mbox_inuse = 0;
|
|
#endif
|
|
|
|
#include "clamav.h"
|
|
#include "others.h"
|
|
#include "matcher.h"
|
|
#include "unrarlib.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 MAGIC_BUFFER_SIZE 13
|
|
#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 BZIP_MAGIC_STR "BZh"
|
|
|
|
|
|
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 + BUFFSIZE;
|
|
if(!(buffer = (char *) cli_calloc(buffsize, sizeof(char))))
|
|
return CL_EMEM;
|
|
|
|
buff = buffer;
|
|
buff += root->maxpatlen; /* pointer to read data block */
|
|
endbl = buff + BUFFSIZE - root->maxpatlen; /* pointer to the last block
|
|
* length of root->maxpatlen
|
|
*/
|
|
|
|
pt= buff;
|
|
length = BUFFSIZE;
|
|
|
|
while((bytes = read(desc, buff, BUFFSIZE)) > 0) {
|
|
|
|
if(scanned != NULL)
|
|
*scanned += bytes / CL_COUNT_PRECISION;
|
|
|
|
if(bytes < BUFFSIZE)
|
|
length -= BUFFSIZE - bytes;
|
|
|
|
if(cl_scanbuff(pt, length, virname, root) == CL_VIRUS) {
|
|
free(buffer);
|
|
return CL_VIRUS;
|
|
}
|
|
|
|
if(bytes == BUFFSIZE)
|
|
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;
|
|
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(write(fd, rar_data_ptr, rar_data_size) != rar_data_size) {
|
|
cli_dbgmsg("RAR -> Can't write() file.\n");
|
|
close(fd);
|
|
tmp = NULL;
|
|
ret = CL_ERAR;
|
|
if(rar_data_ptr)
|
|
free(rar_data_ptr);
|
|
continue;
|
|
}
|
|
|
|
if(rar_data_ptr)
|
|
free(rar_data_ptr);
|
|
|
|
if(fsync(fd) == -1) {
|
|
cli_dbgmsg("fsync() failed for descriptor %d\n", fd);
|
|
close(fd);
|
|
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);
|
|
close(fd);
|
|
urarlib_freelist(rarlist);
|
|
#ifdef CL_THREAD_SAFE
|
|
pthread_mutex_unlock(&cli_scanrar_mutex);
|
|
cli_scanrar_inuse = 0;
|
|
#endif
|
|
return CL_VIRUS;
|
|
}
|
|
|
|
} else {
|
|
ret = CL_ERAR; /* WinRAR 3.0 ? */
|
|
cli_dbgmsg("RAR -> Can't decompress file %s\n", rarlist->item.Name);
|
|
}
|
|
|
|
close(fd);
|
|
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;
|
|
char buff[BUFFSIZE];
|
|
int fd, bytes, files = 0, ret = CL_CLEAN, 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);
|
|
return CL_EZIP;
|
|
}
|
|
|
|
while(zzip_dir_read(zdir, &zdirent)) {
|
|
cli_dbgmsg("Zip -> %s, compressed: %d, normal: %d.\n", zdirent.d_name, zdirent.d_csize, zdirent.st_size);
|
|
|
|
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;
|
|
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;
|
|
}
|
|
|
|
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");
|
|
zzip_dir_close(zdir);
|
|
return CL_ETMPFILE;
|
|
}
|
|
fd = fileno(tmp);
|
|
|
|
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;
|
|
continue;
|
|
}
|
|
|
|
while((bytes = zzip_file_read(zfp, buff, BUFFSIZE)) > 0) {
|
|
if(write(fd, buff, bytes) != bytes) {
|
|
cli_dbgmsg("Zip -> Can't write() file.\n");
|
|
close(fd);
|
|
zzip_file_close(zfp);
|
|
zzip_dir_close(zdir);
|
|
files++;
|
|
return CL_EZIP;
|
|
}
|
|
}
|
|
|
|
zzip_file_close(zfp);
|
|
|
|
if(fsync(fd) == -1) {
|
|
cli_errmsg("fsync() failed for descriptor %d\n", fd);
|
|
close(fd);
|
|
zzip_dir_close(zdir);
|
|
return CL_EFSYNC;
|
|
}
|
|
|
|
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);
|
|
close(fd);
|
|
ret = CL_VIRUS;
|
|
break;
|
|
} else if(ret == CL_EMALFZIP) {
|
|
/*
|
|
* The trick with detection of ZoD works with higher (>= 5)
|
|
* recursion limit level.
|
|
*/
|
|
cli_dbgmsg("Zip -> Malformed Zip, scanning stopped.\n");
|
|
close(fd);
|
|
*virname = "Malformed Zip";
|
|
ret = CL_VIRUS;
|
|
break;
|
|
}
|
|
|
|
close(fd);
|
|
tmp = NULL;
|
|
files++;
|
|
}
|
|
|
|
zzip_dir_close(zdir);
|
|
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[BUFFSIZE];
|
|
FILE *tmp;
|
|
gzFile gd;
|
|
|
|
|
|
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);
|
|
|
|
while((bytes = gzread(gd, buff, BUFFSIZE)) > 0) {
|
|
size += bytes;
|
|
|
|
if(limits)
|
|
if(limits->maxfilesize && (size + BUFFSIZE > 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");
|
|
close(fd);
|
|
gzclose(gd);
|
|
return CL_EGZIP;
|
|
}
|
|
}
|
|
|
|
gzclose(gd);
|
|
if(fsync(fd) == -1) {
|
|
cli_dbgmsg("fsync() failed for descriptor %d\n", fd);
|
|
close(fd);
|
|
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);
|
|
close(fd);
|
|
return CL_VIRUS;
|
|
}
|
|
close(fd);
|
|
|
|
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[BUFFSIZE];
|
|
FILE *fs, *tmp;
|
|
BZFILE *bfd;
|
|
|
|
|
|
if((fs = fdopen(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, memlim, 0, NULL, 0)) == NULL) {
|
|
cli_dbgmsg("Can't initialize bzip2 library (descriptor %d).\n", desc);
|
|
return CL_EBZIP;
|
|
}
|
|
|
|
if((tmp = tmpfile()) == NULL) {
|
|
cli_dbgmsg("Can't generate tmpfile().\n");
|
|
BZ2_bzReadClose(&bzerror, bfd);
|
|
return CL_ETMPFILE;
|
|
}
|
|
fd = fileno(tmp);
|
|
|
|
while((bytes = BZ2_bzRead(&bzerror, bfd, buff, BUFFSIZE)) > 0) {
|
|
size += bytes;
|
|
|
|
if(limits)
|
|
if(limits->maxfilesize && (size + BUFFSIZE > 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);
|
|
close(fd);
|
|
return CL_EGZIP;
|
|
}
|
|
}
|
|
|
|
BZ2_bzReadClose(&bzerror, bfd);
|
|
if(fsync(fd) == -1) {
|
|
cli_dbgmsg("fsync() failed for descriptor %d\n", fd);
|
|
close(fd);
|
|
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);
|
|
close(fd);
|
|
return CL_VIRUS;
|
|
}
|
|
close(fd);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
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(dirname, 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 scanmail()\n");
|
|
|
|
/*
|
|
#ifdef CL_THREAD_SAFE
|
|
pthread_cleanup_push(cli_unlock_mutex, &cli_mbox_mutex);
|
|
pthread_mutex_lock(&cli_mbox_mutex);
|
|
cli_mbox_inuse = 1;
|
|
#endif
|
|
*/
|
|
tmpdir = getenv("TMPDIR");
|
|
|
|
if(tmpdir == NULL)
|
|
#ifdef P_tmpdir
|
|
tmpdir = P_tmpdir;
|
|
#else
|
|
tmpdir = "/tmp";
|
|
#endif
|
|
|
|
/* generate the temporary directory */
|
|
dir = cli_gentemp(tmpdir);
|
|
if(mkdir(dir, 0700)) {
|
|
cli_errmsg("ScanMail -> Can't create temporary directory %s\n", dir);
|
|
/*
|
|
#ifdef CL_THREAD_SAFE
|
|
pthread_mutex_unlock(&cli_mbox_mutex);
|
|
cli_mbox_inuse = 0;
|
|
#endif
|
|
*/
|
|
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);
|
|
|
|
/*
|
|
#ifdef CL_THREAD_SAFE
|
|
pthread_mutex_unlock(&cli_mbox_mutex);
|
|
cli_mbox_inuse = 0;
|
|
pthread_cleanup_pop(0);
|
|
#endif
|
|
*/
|
|
|
|
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];
|
|
int ret = CL_CLEAN;
|
|
|
|
|
|
if(!root) {
|
|
cli_errmsg("root == NULL\n");
|
|
return -1;
|
|
}
|
|
|
|
if(SCAN_ARCHIVE) {
|
|
|
|
if(limits && limits->maxreclevel)
|
|
if(*reclev > limits->maxreclevel)
|
|
return CL_EMAXREC;
|
|
|
|
(*reclev)++;
|
|
|
|
|
|
read(desc, magic, MAGIC_BUFFER_SIZE);
|
|
lseek(desc, 0, SEEK_SET);
|
|
|
|
|
|
#ifdef CL_THREAD_SAFE
|
|
/* this check protects against recursive deadlock */
|
|
if(!cli_scanrar_inuse && !strncmp(magic, RAR_MAGIC_STR, strlen(RAR_MAGIC_STR))) {
|
|
ret = cli_scanrar(desc, virname, scanned, root, limits, options, reclev);
|
|
}
|
|
#else
|
|
if(!strncmp(magic, RAR_MAGIC_STR, strlen(RAR_MAGIC_STR))) {
|
|
ret = cli_scanrar(desc, virname, scanned, root, limits, options, reclev);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_ZLIB_H
|
|
else if(!strncmp(magic, ZIP_MAGIC_STR, strlen(ZIP_MAGIC_STR))) {
|
|
ret = cli_scanzip(desc, virname, scanned, root, limits, options, reclev);
|
|
} else if(!strncmp(magic, GZIP_MAGIC_STR, strlen(GZIP_MAGIC_STR))) {
|
|
ret = cli_scangzip(desc, virname, scanned, root, limits, options, reclev);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_BZLIB_H
|
|
else if(!strncmp(magic, BZIP_MAGIC_STR, strlen(BZIP_MAGIC_STR))) {
|
|
ret = cli_scanbzip(desc, virname, scanned, root, limits, options, reclev);
|
|
}
|
|
#endif
|
|
(*reclev)--;
|
|
}
|
|
|
|
/*
|
|
#ifdef CL_THREAD_SAFE
|
|
if(!cli_mbox_inuse && SCAN_MAIL) {
|
|
#else
|
|
if(SCAN_MAIL) {
|
|
#endif
|
|
*/
|
|
|
|
if(SCAN_MAIL) {
|
|
read(desc, magic, MAGIC_BUFFER_SIZE);
|
|
lseek(desc, 0, SEEK_SET);
|
|
|
|
if(!strncmp(magic, MAIL_MAGIC_STR, strlen(MAIL_MAGIC_STR))) {
|
|
cli_dbgmsg("Recognized Mbox mail file.\n");
|
|
ret = cli_scanmail(desc, virname, scanned, root, limits, options, reclev);
|
|
}
|
|
else if(!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(!strncmp(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);
|
|
}
|
|
|
|
lseek(desc, 0, SEEK_SET);
|
|
}
|
|
|
|
if(ret != CL_VIRUS) /* scan the raw file */
|
|
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;
|
|
}
|
|
|