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450 lines
15 KiB
450 lines
15 KiB
/*
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* Copyright (C) 2014 Cisco and/or its affiliates. All rights reserved.
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* Copyright (C) 2007-2013 Sourcefire, Inc.
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*
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* Authors: Tomasz Kojm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <zlib.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include "libclamav/crypto.h"
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#include "clamav.h"
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#include "cltypes.h"
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#include "dconf.h"
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#include "readdb.h"
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#include "str.h"
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#include "others.h"
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#include "mpool.h"
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struct dconf_module {
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const char *mname; /* module name */
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const char *sname; /* submodule name */
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uint32_t bflag; /* bit flag */
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uint8_t state; /* default state (on/off) */
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};
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#ifdef CL_EXPERIMENTAL
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#define DCONF_ENABLE_EXPERIMENTAL 1
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#else
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#define DCONF_ENABLE_EXPERIMENTAL 0
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#endif
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static struct dconf_module modules[] = {
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{ "PE", "PARITE", PE_CONF_PARITE, 1 },
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{ "PE", "KRIZ", PE_CONF_KRIZ, 1 },
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{ "PE", "MAGISTR", PE_CONF_MAGISTR, 1 },
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{ "PE", "POLIPOS", PE_CONF_POLIPOS, 1 },
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{ "PE", "MD5SECT", PE_CONF_MD5SECT, 1 },
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{ "PE", "UPX", PE_CONF_UPX, 1 },
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{ "PE", "FSG", PE_CONF_FSG, 1 },
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{ "PE", "SWIZZOR", PE_CONF_SWIZZOR, 1 },
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{ "PE", "PETITE", PE_CONF_PETITE, 1 },
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{ "PE", "PESPIN", PE_CONF_PESPIN, 1 },
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{ "PE", "YC", PE_CONF_YC, 1 },
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{ "PE", "WWPACK", PE_CONF_WWPACK, 1 },
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{ "PE", "NSPACK", PE_CONF_NSPACK, 1 },
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{ "PE", "MEW", PE_CONF_MEW, 1 },
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{ "PE", "UPACK", PE_CONF_UPACK, 1 },
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{ "PE", "ASPACK", PE_CONF_ASPACK, 1 },
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{ "PE", "CATALOG", PE_CONF_CATALOG, 1 },
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{ "PE", "DISABLECERT", PE_CONF_DISABLECERT, 0 },
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{ "PE", "DUMPCERT", PE_CONF_DUMPCERT, 0 },
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{ "ELF", NULL, 0x1, 1 },
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{ "MACHO", NULL, 0x1, 1 },
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{ "ARCHIVE", "RAR", ARCH_CONF_RAR, 1 },
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{ "ARCHIVE", "ZIP", ARCH_CONF_ZIP, 1 },
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{ "ARCHIVE", "GZIP", ARCH_CONF_GZ, 1 },
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{ "ARCHIVE", "BZIP", ARCH_CONF_BZ, 1 },
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{ "ARCHIVE", "ARJ", ARCH_CONF_ARJ, 1 },
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{ "ARCHIVE", "SZDD", ARCH_CONF_SZDD, 1 },
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{ "ARCHIVE", "CAB", ARCH_CONF_CAB, 1 },
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{ "ARCHIVE", "CHM", ARCH_CONF_CHM, 1 },
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{ "ARCHIVE", "OLE2", ARCH_CONF_OLE2, 1 },
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{ "ARCHIVE", "TAR", ARCH_CONF_TAR, 1 },
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{ "ARCHIVE", "CPIO", ARCH_CONF_CPIO, 1 },
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{ "ARCHIVE", "BINHEX", ARCH_CONF_BINHEX, 1 },
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{ "ARCHIVE", "SIS", ARCH_CONF_SIS, 1 },
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{ "ARCHIVE", "NSIS", ARCH_CONF_NSIS, 1 },
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{ "ARCHIVE", "AUTOIT", ARCH_CONF_AUTOIT, 1 },
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{ "ARCHIVE", "ISHIELD", ARCH_CONF_ISHIELD, 1 },
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{ "ARCHIVE", "7zip", ARCH_CONF_7Z, 1 },
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{ "ARCHIVE", "ISO9660", ARCH_CONF_ISO9660, 1 },
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{ "ARCHIVE", "DMG", ARCH_CONF_DMG, 1 },
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{ "ARCHIVE", "XAR", ARCH_CONF_XAR, 1 },
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{ "ARCHIVE", "HFSPLUS", ARCH_CONF_HFSPLUS, 1 },
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{ "ARCHIVE", "XZ", ARCH_CONF_XZ, 1 },
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{ "DOCUMENT", "HTML", DOC_CONF_HTML, 1 },
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{ "DOCUMENT", "RTF", DOC_CONF_RTF, 1 },
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{ "DOCUMENT", "PDF", DOC_CONF_PDF, 1 },
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{ "DOCUMENT", "SCRIPT", DOC_CONF_SCRIPT, 1 },
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{ "DOCUMENT", "HTMLSKIPRAW", DOC_CONF_HTML_SKIPRAW, 1 },
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{ "DOCUMENT", "JSNORM", DOC_CONF_JSNORM, 1 },
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{ "DOCUMENT", "SWF", DOC_CONF_SWF, 1 },
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{ "MAIL", "MBOX", MAIL_CONF_MBOX, 1 },
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{ "MAIL", "TNEF", MAIL_CONF_TNEF, 1 },
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{ "OTHER", "UUENCODED", OTHER_CONF_UUENC, 1 },
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{ "OTHER", "SCRENC", OTHER_CONF_SCRENC, 1 },
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{ "OTHER", "RIFF", OTHER_CONF_RIFF, 1 },
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{ "OTHER", "JPEG", OTHER_CONF_JPEG, 1 },
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{ "OTHER", "CRYPTFF", OTHER_CONF_CRYPTFF, 1 },
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{ "OTHER", "DLP", OTHER_CONF_DLP, 1 },
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{ "OTHER", "MYDOOMLOG", OTHER_CONF_MYDOOMLOG, 1 },
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{ "OTHER", "PREFILTERING", OTHER_CONF_PREFILTERING,1 },
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{ "OTHER", "PDFNAMEOBJ", OTHER_CONF_PDFNAMEOBJ, 1 },
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{ "OTHER", "PRTNINTXN", OTHER_CONF_PRTNINTXN, 1 },
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{ "PHISHING", "ENGINE", PHISHING_CONF_ENGINE, 1 },
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{ "PHISHING", "ENTCONV", PHISHING_CONF_ENTCONV, 1 },
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{ "BYTECODE", "INTERPRETER", BYTECODE_INTERPRETER, 1 },
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{ "BYTECODE", "JIT X86", BYTECODE_JIT_X86, 1 },
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{ "BYTECODE", "JIT PPC", BYTECODE_JIT_PPC, 1 },
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{ "BYTECODE", "JIT ARM", BYTECODE_JIT_ARM, 0 },
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{ "STATS", "DISABLED", DCONF_STATS_DISABLED, 0 },
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{ "STATS", "PESECTION DISABLED", DCONF_STATS_PE_SECTION_DISABLED, 0 },
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{ NULL, NULL, 0, 0 }
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};
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#ifdef USE_MPOOL
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struct cli_dconf *cli_dconf_init(mpool_t *mempool)
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#else
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struct cli_dconf *cli_dconf_init(void)
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#endif
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{
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unsigned int i;
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struct cli_dconf *dconf;
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dconf = (struct cli_dconf *) mpool_calloc(mempool, sizeof(struct cli_dconf), 1);
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if(!dconf)
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return NULL;
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for(i = 0; modules[i].mname; i++) {
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if(!strcmp(modules[i].mname, "PE")) {
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if(modules[i].state)
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dconf->pe |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "ELF")) {
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if(modules[i].state)
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dconf->elf |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "MACHO")) {
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if(modules[i].state)
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dconf->macho |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "ARCHIVE")) {
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if(modules[i].state)
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dconf->archive |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "DOCUMENT")) {
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if(modules[i].state)
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dconf->doc |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "MAIL")) {
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if(modules[i].state)
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dconf->mail |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "OTHER")) {
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if(modules[i].state)
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dconf->other |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "PHISHING")) {
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if(modules[i].state)
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dconf->phishing |= modules[i].bflag;
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} else if(!strcmp(modules[i].mname, "BYTECODE")) {
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if (modules[i].state)
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dconf->bytecode |= modules[i].bflag;
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} else if (!strcmp(modules[i].mname, "STATS")) {
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if (modules[i].state)
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dconf->stats |= modules[i].bflag;
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}
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}
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return dconf;
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}
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void cli_dconf_print(struct cli_dconf *dconf)
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{
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unsigned int pe = 0, elf = 0, macho = 0, arch = 0, doc = 0, mail = 0;
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unsigned int other = 0, phishing = 0, i, bytecode=0, stats=0;
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cli_dbgmsg("Dynamic engine configuration settings:\n");
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cli_dbgmsg("--------------------------------------\n");
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for(i = 0; modules[i].mname; i++) {
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if(!strcmp(modules[i].mname, "PE")) {
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if(!pe) {
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cli_dbgmsg("Module PE: %s\n", dconf->pe ? "On" : "Off");
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pe = 1;
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}
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if(dconf->pe)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->pe & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "ELF")) {
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if(!elf) {
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cli_dbgmsg("Module ELF: %s\n", dconf->elf ? "On" : "Off");
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elf = 1;
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}
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} else if(!strcmp(modules[i].mname, "MACHO")) {
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if(!macho) {
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cli_dbgmsg("Module MACHO: %s\n", dconf->elf ? "On" : "Off");
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macho = 1;
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}
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} else if(!strcmp(modules[i].mname, "ARCHIVE")) {
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if(!arch) {
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cli_dbgmsg("Module ARCHIVE: %s\n", dconf->archive ? "On" : "Off");
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arch = 1;
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}
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if(dconf->archive)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->archive & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "DOCUMENT")) {
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if(!doc) {
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cli_dbgmsg("Module DOCUMENT: %s\n", dconf->doc ? "On" : "Off");
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doc = 1;
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}
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if(dconf->doc)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->doc & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "MAIL")) {
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if(!mail) {
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cli_dbgmsg("Module MAIL: %s\n", dconf->mail ? "On" : "Off");
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mail = 1;
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}
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if(dconf->mail)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->mail & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "OTHER")) {
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if(!other) {
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cli_dbgmsg("Module OTHER: %s\n", dconf->other ? "On" : "Off");
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other = 1;
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}
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if(dconf->other)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->other & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "PHISHING")) {
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if(!phishing) {
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cli_dbgmsg("Module PHISHING %s\n", dconf->phishing ? "On" : "Off");
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phishing = 1;
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}
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if(dconf->phishing)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->phishing & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if(!strcmp(modules[i].mname, "BYTECODE")) {
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if(!bytecode) {
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cli_dbgmsg("Module BYTECODE %s\n", dconf->bytecode ? "On" : "Off");
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bytecode = 1;
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}
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if(dconf->bytecode)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->bytecode & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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} else if (!strcmp(modules[i].mname, "STATS")) {
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if (!stats) {
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cli_dbgmsg("Module STATS %s\n", dconf->stats ? "On" : "Off");
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stats = 1;
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}
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if (dconf->stats)
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cli_dbgmsg(" * Submodule %10s:\t%s\n", modules[i].sname, (dconf->stats & modules[i].bflag) ? "On" : "** Off **");
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else
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continue;
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}
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}
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}
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static int chkflevel(const char *entry, int field)
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{
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char *pt;
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if((pt = cli_strtok(entry, field, ":"))) { /* min version */
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if(!isdigit(*pt)) {
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free(pt);
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return 0;
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}
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if((unsigned int) atoi(pt) > CL_FLEVEL_DCONF) {
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free(pt);
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return 0;
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}
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free(pt);
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if((pt = cli_strtok(entry, field + 1, ":"))) { /* max version */
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if(!isdigit(*pt)) {
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free(pt);
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return 0;
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}
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if((unsigned int) atoi(pt) < CL_FLEVEL_DCONF) {
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free(pt);
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return 0;
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}
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free(pt);
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}
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}
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return 1;
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}
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int cli_dconf_load(FILE *fs, struct cl_engine *engine, unsigned int options, struct cli_dbio *dbio)
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{
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char buffer[FILEBUFF];
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unsigned int line = 0;
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int ret = 0;
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uint32_t val;
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while(cli_dbgets(buffer, FILEBUFF, fs, dbio)) {
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line++;
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cli_chomp(buffer);
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if(!strncmp(buffer, "PE:", 3) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 3, "0x%x", &val) == 1) {
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engine->dconf->pe = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "ELF:", 4) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 4, "0x%x", &val) == 1) {
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engine->dconf->elf = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "MACHO:", 4) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 4, "0x%x", &val) == 1) {
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engine->dconf->macho = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "ARCHIVE:", 8) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 8, "0x%x", &val) == 1) {
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engine->dconf->archive = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "DOCUMENT:", 9) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 9, "0x%x", &val) == 1) {
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engine->dconf->doc = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "MAIL:", 5) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 5, "0x%x", &val) == 1) {
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engine->dconf->mail = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "OTHER:", 6) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 6, "0x%x", &val) == 1) {
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engine->dconf->other = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "PHISHING:", 9) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 9, "0x%x", &val) == 1) {
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engine->dconf->phishing = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "BYTECODE:", 9) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 9, "0x%x", &val) == 1) {
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engine->dconf->bytecode = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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if(!strncmp(buffer, "STATS:", 6) && chkflevel(buffer, 2)) {
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if(sscanf(buffer + 6, "0x%x", &val) == 1) {
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engine->dconf->stats = val;
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} else {
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ret = CL_EMALFDB;
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break;
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}
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}
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}
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if(ret) {
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cli_errmsg("Problem parsing configuration file at line %u\n", line);
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return ret;
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}
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return CL_SUCCESS;
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}
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