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