mirror of https://github.com/Cisco-Talos/clamav
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344 lines
8.9 KiB
344 lines
8.9 KiB
/*
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* Copyright (C) 2002 - 2006 Tomasz Kojm <tkojm@clamav.net>
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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 <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <string.h>
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#include <errno.h>
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#include <signal.h>
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#include <time.h>
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#include <sys/types.h>
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#ifndef _WIN32
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#include <sys/wait.h>
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef HAVE_GRP_H
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#include <grp.h>
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#endif
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#if defined(USE_SYSLOG) && !defined(C_AIX)
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#include <syslog.h>
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#endif
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#include "target.h"
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#include "clamav.h"
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#include "freshclam/freshclamcodes.h"
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#include "libclamav/others.h"
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#include "libclamav/str.h"
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#include "shared/optparser.h"
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#include "shared/output.h"
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#include "shared/misc.h"
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#include "freshclam/execute.h"
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#include "freshclam/manager.h"
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#include "freshclam/mirman.h"
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#include "libfreshclam.h"
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int sigchld_wait = 1;
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char updtmpdir[512], dbdir[512];
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static int
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download (const struct optstruct *opts, const char *cfgfile)
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{
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int ret = 0, try = 1, maxattempts = 0;
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const struct optstruct *opt;
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maxattempts = (int)optget (opts, "MaxAttempts")->numarg;
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logg ("*Max retries == %d\n", maxattempts);
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if (!(opt = optget (opts, "DatabaseMirror"))->enabled)
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{
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logg ("^You must specify at least one database mirror in %s\n",
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cfgfile);
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return FCE_CONFIG;
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}
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else
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{
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while (opt)
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{
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ret = downloadmanager (opts, opt->strarg, try);
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#ifndef _WIN32
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alarm (0);
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#endif
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if (ret == FCE_CONNECTION || ret == FCE_BADCVD
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|| ret == FCE_FAILEDGET || ret == FCE_MIRRORNOTSYNC)
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{
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if (try < maxattempts)
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{
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logg ("Trying again in 5 secs...\n");
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try++;
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sleep (5);
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continue;
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}
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else
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{
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logg ("Giving up on %s...\n", opt->strarg);
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opt = (struct optstruct *) opt->nextarg;
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if (!opt)
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{
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logg ("Update failed. Your network may be down or none of the mirrors listed in %s is working. Check http://www.clamav.net/support/mirror-problem for possible reasons.\n", cfgfile);
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}
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}
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}
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else
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{
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return ret;
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}
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}
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}
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return ret;
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}
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int download_with_opts(struct optstruct *opts, const char* db_path, const char* db_owner) {
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const struct optstruct *opt;
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#ifdef HAVE_PWD_H
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const char *dbowner;
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struct passwd *user;
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#endif
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struct mirdat mdat;
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int ret;
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#ifdef HAVE_PWD_H
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if (db_owner) {
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dbowner = db_owner;
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}
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else
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{
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/* freshclam shouldn't work with root privileges */
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dbowner = optget (opts, "DatabaseOwner")->strarg;
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}
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if (!geteuid ())
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{
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if ((user = getpwnam (dbowner)) == NULL)
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{
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logg ("^Can't get information about user %s.\n", dbowner);
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optfree (opts);
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return FCE_USERINFO;
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}
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if (optget (opts, "AllowSupplementaryGroups")->enabled)
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{
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#ifdef HAVE_INITGROUPS
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if (initgroups (dbowner, user->pw_gid))
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{
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logg ("^initgroups() failed.\n");
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optfree (opts);
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return FCE_USERORGROUP;
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}
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#endif
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}
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else
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{
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}
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}
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#endif /* HAVE_PWD_H */
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/* initialize some important variables */
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if (optget (opts, "Debug")->enabled || optget (opts, "debug")->enabled)
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cl_debug ();
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if (optget (opts, "verbose")->enabled)
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mprintf_verbose = 1;
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if (optget (opts, "quiet")->enabled)
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mprintf_quiet = 1;
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if (optget (opts, "no-warnings")->enabled)
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{
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mprintf_nowarn = 1;
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logg_nowarn = 1;
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}
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if (optget (opts, "stdout")->enabled)
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mprintf_stdout = 1;
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/* initialize logger */
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logg_verbose = mprintf_verbose ? 1 : optget (opts, "LogVerbose")->enabled;
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logg_time = optget (opts, "LogTime")->enabled;
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logg_size = optget (opts, "LogFileMaxSize")->numarg;
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if (logg_size)
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logg_rotate = optget(opts, "LogRotate")->enabled;
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if ((opt = optget (opts, "UpdateLogFile"))->enabled)
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{
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logg_file = opt->strarg;
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if (logg ("#--------------------------------------\n"))
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{
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mprintf ("!Problem with internal logger (UpdateLogFile = %s).\n",
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logg_file);
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optfree (opts);
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return FCE_LOGGING;
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}
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}
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else
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logg_file = NULL;
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#if defined(USE_SYSLOG) && !defined(C_AIX)
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if (optget (opts, "LogSyslog")->enabled)
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{
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int fac = LOG_LOCAL6;
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if ((opt = optget (opts, "LogFacility"))->enabled)
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{
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if ((fac = logg_facility (opt->strarg)) == -1)
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{
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mprintf ("!LogFacility: %s: No such facility.\n",
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opt->strarg);
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optfree (opts);
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return FCE_LOGGING;
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}
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}
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openlog ("freshclam", LOG_PID, fac);
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logg_syslog = 1;
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}
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#endif
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/* change the current working directory */
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if (chdir (optget (opts, "DatabaseDirectory")->strarg))
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{
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logg ("!Can't change dir to %s\n",
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optget (opts, "DatabaseDirectory")->strarg);
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optfree (opts);
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return FCE_DIRECTORY;
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}
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else
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{
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if (db_path)
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{
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if (chdir (db_path))
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{
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logg ("!Can't change dir to %s\n", db_path);
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optfree (opts);
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return FCE_DIRECTORY;
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}
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}
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if (!getcwd (dbdir, sizeof (dbdir)))
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{
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logg ("!getcwd() failed\n");
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optfree (opts);
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return FCE_DIRECTORY;
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}
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logg ("*Current working dir is %s\n", dbdir);
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}
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if (optget (opts, "list-mirrors")->enabled)
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{
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if (mirman_read ("mirrors.dat", &mdat, 1) == -1)
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{
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printf ("Can't read mirrors.dat\n");
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optfree (opts);
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return FCE_FILE;
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}
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mirman_list (&mdat);
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mirman_free (&mdat);
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optfree (opts);
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return 0;
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}
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if ((opt = optget (opts, "PrivateMirror"))->enabled)
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{
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struct optstruct *dbm, *opth;
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dbm = (struct optstruct *) optget (opts, "DatabaseMirror");
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dbm->active = dbm->enabled = 1;
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do
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{
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if (cli_strbcasestr (opt->strarg, ".clamav.net"))
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{
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logg ("!PrivateMirror: *.clamav.net is not allowed in this mode\n");
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optfree (opts);
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return FCE_PRIVATEMIRROR;
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}
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if (dbm->strarg)
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free (dbm->strarg);
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dbm->strarg = strdup (opt->strarg);
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if (!dbm->strarg)
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{
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logg ("!strdup() failed\n");
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optfree (opts);
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return FCE_MEM;
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}
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if (!dbm->nextarg)
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{
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dbm->nextarg =
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(struct optstruct *) calloc (1,
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sizeof (struct optstruct));
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if (!dbm->nextarg)
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{
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logg ("!calloc() failed\n");
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optfree (opts);
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return FCE_MEM;
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}
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}
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opth = dbm;
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dbm = dbm->nextarg;
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}
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while ((opt = opt->nextarg));
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opth->nextarg = NULL;
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while (dbm)
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{
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free (dbm->name);
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free (dbm->cmd);
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free (dbm->strarg);
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opth = dbm;
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dbm = dbm->nextarg;
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free (opth);
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}
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/* disable DNS db checks */
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opth = (struct optstruct *) optget (opts, "no-dns");
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opth->active = opth->enabled = 1;
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/* disable scripted updates */
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opth = (struct optstruct *) optget (opts, "ScriptedUpdates");
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opth->active = opth->enabled = 0;
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}
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*updtmpdir = 0;
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ret = download (opts, NULL);
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optfree (opts);
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return ret;
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}
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