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clamav
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ClamAV is an open source (GPLv2) anti-virus toolkit.
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clamav/clamscan/clamscan.c

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/*
* Copyright (C) 2015 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
* Copyright (C) 2007-2012 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 <stdlib.h>
#include <string.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef _WIN32
#include <sys/time.h>
#endif
#include <time.h>
#ifdef C_LINUX
#include <sys/resource.h>
#endif
#include "others.h"
#include "global.h"
#include "manager.h"
#include "shared/misc.h"
#include "shared/output.h"
#include "shared/actions.h"
#include "shared/optparser.h"
#include "libclamav/str.h"
#include "libclamav/clamav.h"
void help(void);
struct s_info info;
short recursion = 0, bell = 0;
short printinfected = 0, printclean = 1;
int main(int argc, char **argv)
{
int ds, dms, ret;
double mb, rmb;
struct timeval t1, t2;
#ifndef _WIN32
sigset_t sigset;
#endif
struct optstruct *opts;
const struct optstruct *opt;
if(check_flevel())
exit(2);
#if !defined(_WIN32) && !defined(C_BEOS)
sigemptyset(&sigset);
sigaddset(&sigset, SIGXFSZ);
sigprocmask(SIG_SETMASK, &sigset, NULL);
#endif
cl_initialize_crypto();
if((opts = optparse(NULL, argc, argv, 1, OPT_CLAMSCAN, 0, NULL)) == NULL) {
mprintf("!Can't parse command line options\n");
return 2;
}
if(optget(opts, "verbose")->enabled) {
mprintf_verbose = 1;
logg_verbose = 1;
}
if(optget(opts, "quiet")->enabled)
mprintf_quiet = 1;
if(optget(opts, "stdout")->enabled)
mprintf_stdout = 1;
if(optget(opts, "debug")->enabled) {
#if defined(C_LINUX)
/* njh@bandsman.co.uk: create a dump if needed */
struct rlimit rlim;
rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
if(setrlimit(RLIMIT_CORE, &rlim) < 0)
perror("setrlimit");
#endif
cl_debug(); /* enable debug messages */
}
if (optget(opts, "gen-mdb")->enabled) {
cl_always_gen_section_hash();
}
if(optget(opts, "version")->enabled) {
print_version(optget(opts, "database")->strarg);
optfree(opts);
return 0;
}
if(optget(opts, "help")->enabled) {
optfree(opts);
help();
return 0;
}
if(optget(opts, "recursive")->enabled)
recursion = 1;
if(optget(opts, "infected")->enabled)
printinfected = 1;
if(optget(opts, "suppress-ok-results")->enabled)
printclean = 0;
if(optget(opts, "bell")->enabled)
bell = 1;
/* initialize logger */
if((opt = optget(opts, "log"))->enabled) {
logg_file = opt->strarg;
if(logg("#\n-------------------------------------------------------------------------------\n\n")) {
mprintf("!Problem with internal logger.\n");
optfree(opts);
return 2;
}
} else
logg_file = NULL;
if(actsetup(opts)) {
optfree(opts);
logg_close();
exit(2);
}
memset(&info, 0, sizeof(struct s_info));
gettimeofday(&t1, NULL);
ret = scanmanager(opts);
if(!optget(opts, "no-summary")->enabled) {
gettimeofday(&t2, NULL);
ds = t2.tv_sec - t1.tv_sec;
dms = t2.tv_usec - t1.tv_usec;
ds -= (dms < 0) ? (1):(0);
dms += (dms < 0) ? (1000000):(0);
logg("\n----------- SCAN SUMMARY -----------\n");
logg("Known viruses: %u\n", info.sigs);
logg("Engine version: %s\n", get_version());
logg("Scanned directories: %u\n", info.dirs);
logg("Scanned files: %u\n", info.files);
logg("Infected files: %u\n", info.ifiles);
if(info.errors)
logg("Total errors: %u\n", info.errors);
if(notremoved) {
logg("Not removed: %u\n", notremoved);
}
if(notmoved) {
logg("Not %s: %u\n", optget(opts, "copy")->enabled ? "moved" : "copied", notmoved);
}
mb = info.blocks * (CL_COUNT_PRECISION / 1024) / 1024.0;
logg("Data scanned: %2.2lf MB\n", mb);
rmb = info.rblocks * (CL_COUNT_PRECISION / 1024) / 1024.0;
logg("Data read: %2.2lf MB (ratio %.2f:1)\n", rmb, info.rblocks ? (double)info.blocks/(double)info.rblocks : 0);
logg("Time: %u.%3.3u sec (%u m %u s)\n", ds, dms/1000, ds/60, ds%60);
}
optfree(opts);
cl_cleanup_crypto();
return ret;
}
void help(void)
{
mprintf_stdout = 1;
mprintf("\n");
mprintf(" Clam AntiVirus Scanner %s\n", get_version());
printf(" By The ClamAV Team: http://www.clamav.net/about.html#credits\n");
printf(" (C) 2007-2015 Cisco Systems, Inc.\n\n");
mprintf(" --help -h Print this help screen\n");
mprintf(" --version -V Print version number\n");
mprintf(" --verbose -v Be verbose\n");
mprintf(" --archive-verbose -a Show filenames inside scanned archives\n");
mprintf(" --debug Enable libclamav's debug messages\n");
mprintf(" --quiet Only output error messages\n");
mprintf(" --stdout Write to stdout instead of stderr\n");
mprintf(" --no-summary Disable summary at end of scanning\n");
mprintf(" --infected -i Only print infected files\n");
mprintf(" --suppress-ok-results -o Skip printing OK files\n");
mprintf(" --bell Sound bell on virus detection\n");
mprintf("\n");
mprintf(" --tempdir=DIRECTORY Create temporary files in DIRECTORY\n");
mprintf(" --leave-temps[=yes/no(*)] Do not remove temporary files\n");
mprintf(" --database=FILE/DIR -d FILE/DIR Load virus database from FILE or load\n");
mprintf(" all supported db files from DIR\n");
mprintf(" --official-db-only[=yes/no(*)] Only load official signatures\n");
mprintf(" --log=FILE -l FILE Save scan report to FILE\n");
mprintf(" --recursive[=yes/no(*)] -r Scan subdirectories recursively\n");
mprintf(" --allmatch[=yes/no(*)] -z Continue scanning within file after finding a match\n");
mprintf(" --cross-fs[=yes(*)/no] Scan files and directories on other filesystems\n");
mprintf(" --follow-dir-symlinks[=0/1(*)/2] Follow directory symlinks (0 = never, 1 = direct, 2 = always)\n");
mprintf(" --follow-file-symlinks[=0/1(*)/2] Follow file symlinks (0 = never, 1 = direct, 2 = always)\n");
mprintf(" --file-list=FILE -f FILE Scan files from FILE\n");
mprintf(" --remove[=yes/no(*)] Remove infected files. Be careful!\n");
mprintf(" --move=DIRECTORY Move infected files into DIRECTORY\n");
mprintf(" --copy=DIRECTORY Copy infected files into DIRECTORY\n");
mprintf(" --exclude=REGEX Don't scan file names matching REGEX\n");
mprintf(" --exclude-dir=REGEX Don't scan directories matching REGEX\n");
mprintf(" --include=REGEX Only scan file names matching REGEX\n");
mprintf(" --include-dir=REGEX Only scan directories matching REGEX\n");
mprintf("\n");
mprintf(" --bytecode[=yes(*)/no] Load bytecode from the database\n");
mprintf(" --bytecode-unsigned[=yes/no(*)] Load unsigned bytecode\n");
mprintf(" --bytecode-timeout=N Set bytecode timeout (in milliseconds)\n");
mprintf(" --statistics[=none(*)/bytecode/pcre] Collect and print execution statistics\n");
mprintf(" --detect-pua[=yes/no(*)] Detect Possibly Unwanted Applications\n");
mprintf(" --exclude-pua=CAT Skip PUA sigs of category CAT\n");
mprintf(" --include-pua=CAT Load PUA sigs of category CAT\n");
mprintf(" --detect-structured[=yes/no(*)] Detect structured data (SSN, Credit Card)\n");
mprintf(" --structured-ssn-format=X SSN format (0=normal,1=stripped,2=both)\n");
mprintf(" --structured-ssn-count=N Min SSN count to generate a detect\n");
mprintf(" --structured-cc-count=N Min CC count to generate a detect\n");
mprintf(" --scan-mail[=yes(*)/no] Scan mail files\n");
mprintf(" --phishing-sigs[=yes(*)/no] Signature-based phishing detection\n");
mprintf(" --phishing-scan-urls[=yes(*)/no] URL-based phishing detection\n");
mprintf(" --heuristic-scan-precedence[=yes/no(*)] Stop scanning as soon as a heuristic match is found\n");
mprintf(" --phishing-ssl[=yes/no(*)] Always block SSL mismatches in URLs (phishing module)\n");
mprintf(" --phishing-cloak[=yes/no(*)] Always block cloaked URLs (phishing module)\n");
mprintf(" --partition-intersection[=yes/no(*)] Detect partition intersections in raw disk images using heuristics.\n");
mprintf(" --algorithmic-detection[=yes(*)/no] Algorithmic detection\n");
mprintf(" --scan-pe[=yes(*)/no] Scan PE files\n");
mprintf(" --scan-elf[=yes(*)/no] Scan ELF files\n");
mprintf(" --scan-ole2[=yes(*)/no] Scan OLE2 containers\n");
mprintf(" --scan-pdf[=yes(*)/no] Scan PDF files\n");
mprintf(" --scan-swf[=yes(*)/no] Scan SWF files\n");
mprintf(" --scan-html[=yes(*)/no] Scan HTML files\n");
mprintf(" --scan-xmldocs[=yes(*)/no] Scan xml-based document files\n");
mprintf(" --scan-hwp3[=yes(*)/no] Scan HWP3 files\n");
mprintf(" --scan-archive[=yes(*)/no] Scan archive files (supported by libclamav)\n");
mprintf(" --detect-broken[=yes/no(*)] Try to detect broken executable files\n");
mprintf(" --block-encrypted[=yes/no(*)] Block encrypted archives\n");
mprintf(" --nocerts Disable authenticode certificate chain verification in PE files\n");
mprintf(" --dumpcerts Dump authenticode certificate chain in PE files\n");
mprintf("\n");
mprintf(" --max-filesize=#n Files larger than this will be skipped and assumed clean\n");
mprintf(" --max-scansize=#n The maximum amount of data to scan for each container file (**)\n");
mprintf(" --max-files=#n The maximum number of files to scan for each container file (**)\n");
mprintf(" --max-recursion=#n Maximum archive recursion level for container file (**)\n");
mprintf(" --max-dir-recursion=#n Maximum directory recursion level\n");
mprintf(" --max-embeddedpe=#n Maximum size file to check for embedded PE\n");
mprintf(" --max-htmlnormalize=#n Maximum size of HTML file to normalize\n");
mprintf(" --max-htmlnotags=#n Maximum size of normalized HTML file to scan\n");
mprintf(" --max-scriptnormalize=#n Maximum size of script file to normalize\n");
mprintf(" --max-ziptypercg=#n Maximum size zip to type reanalyze\n");
mprintf(" --max-partitions=#n Maximum number of partitions in disk image to be scanned\n");
mprintf(" --max-iconspe=#n Maximum number of icons in PE file to be scanned\n");
mprintf(" --max-rechwp3=#n Maximum recursive calls to HWP3 parsing function\n");
#if HAVE_PCRE
mprintf(" --pcre-match-limit=#n Maximum calls to the PCRE match function.\n");
mprintf(" --pcre-recmatch-limit=#n Maximum recursive calls to the PCRE match function.\n");
mprintf(" --pcre-max-filesize=#n Maximum size file to perform PCRE subsig matching.\n");
#endif /* HAVE_PCRE */
mprintf(" --enable-stats Enable statistical reporting of malware\n");
mprintf(" --disable-pe-stats Disable submission of individual PE sections in stats submissions\n");
mprintf(" --stats-timeout=#n Number of seconds to wait for waiting a response back from the stats server\n");
mprintf(" --stats-host-id=UUID Set the Host ID used when submitting statistical info.\n");
mprintf(" --disable-cache Disable caching and cache checks for hash sums of scanned files.\n");
mprintf("\n");
mprintf("(*) Default scan settings\n");
mprintf("(**) Certain files (e.g. documents, archives, etc.) may in turn contain other\n");
mprintf(" files inside. The above options ensure safe processing of this kind of data.\n\n");
}