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/*
* Copyright (C) 2002 - 2013 Sourcefire, Inc.
*
* 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
#ifdef BUILD_CLAMD
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#include <string.h>
#include <errno.h>
#include "shared/optparser.h"
#include "shared/output.h"
#include "shared/clamdcom.h"
#include "notify.h"
int
clamd_connect (const char *cfgfile, const char *option)
{
#ifndef _WIN32
struct sockaddr_un server;
#endif
#ifdef HAVE_GETADDRINFO
struct addrinfo hints, *res, *p;
char port[6];
int ret;
#else
struct sockaddr_in server2;
struct hostent *he;
#endif
struct optstruct *opts;
const struct optstruct *opt;
int sockd;
if ((opts = optparse (cfgfile, 0, NULL, 1, OPT_CLAMD, 0, NULL)) == NULL)
{
logg ("!%s: Can't find or parse configuration file %s\n", option,
cfgfile);
return -11;
}
#ifndef _WIN32
if ((opt = optget (opts, "LocalSocket"))->enabled)
{
memset(&server, 0x00, sizeof(server));
server.sun_family = AF_UNIX;
strncpy (server.sun_path, opt->strarg, sizeof (server.sun_path));
server.sun_path[sizeof (server.sun_path) - 1] = '\0';
if ((sockd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
{
logg ("^Clamd was NOT notified: Can't create socket endpoint for %s: %s\n",
opt->strarg, strerror(errno));
optfree (opts);
return -1;
}
if (connect
(sockd, (struct sockaddr *) &server,
sizeof (struct sockaddr_un)) < 0)
{
logg ("^Clamd was NOT notified: Can't connect to clamd through %s: %s\n",
opt->strarg, strerror(errno));
closesocket (sockd);
optfree (opts);
return -11;
}
return sockd;
}
else
#endif
if ((opt = optget (opts, "TCPSocket"))->enabled)
{
#ifdef HAVE_GETADDRINFO
memset (&hints, 0, sizeof (hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
snprintf (port, sizeof (port), "%u", (unsigned int) opt->numarg);
port[5] = 0;
opt = optget(opts, "TCPAddr");
while (opt) {
ret = getaddrinfo (opt->strarg, port, &hints, &res);
if (ret)
{
logg ("!%s: Can't resolve hostname %s (%s)\n", option,
opt->strarg ? opt->strarg : "",
(ret ==
EAI_SYSTEM) ? strerror (errno) : gai_strerror (ret));
opt = opt->nextarg;
continue;
}
for (p = res; p != NULL; p = p->ai_next) {
if ((sockd = socket (p->ai_family, p->ai_socktype, p->ai_protocol)) < 0)
{
logg ("!%s: Can't create TCP socket to connect to %s: %s\n",
option, opt->strarg ? opt->strarg : "localhost", strerror(errno));
continue;
}
if (connect (sockd, p->ai_addr, p->ai_addrlen) == -1)
{
logg ("!%s: Can't connect to clamd on %s:%s: %s\n", option,
opt->strarg ? opt->strarg : "localhost", port, strerror(errno));
closesocket (sockd);
continue;
}
optfree(opts);
freeaddrinfo(res);
return sockd;
}
freeaddrinfo (res);
opt = opt->nextarg;
}
#else /* IPv4 */
if ((sockd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
{
logg ("!%s: Can't create TCP socket: %s\n", option, strerror(errno));
optfree (opts);
return -1;
}
server2.sin_family = AF_INET;
server2.sin_port = htons (opt->numarg);
if ((opt = optget (opts, "TCPAddr"))->enabled)
{
if ((he = gethostbyname (opt->strarg)) == 0)
{
logg ("^Clamd was NOT notified: Can't resolve hostname '%s': %s\n",
opt->strarg, strerror(errno));
optfree (opts);
closesocket (sockd);
return -1;
}
server2.sin_addr = *(struct in_addr *) he->h_addr_list[0];
}
else
server2.sin_addr.s_addr = inet_addr ("127.0.0.1");
if (connect
(sockd, (struct sockaddr *) &server2,
sizeof (struct sockaddr_in)) < 0)
{
logg ("^Clamd was NOT notified: Can't connect to clamd on %s:%d: %s\n",
inet_ntoa (server2.sin_addr), ntohs (server2.sin_port), strerror(errno));
closesocket (sockd);
optfree (opts);
return -1;
}
return sockd;
#endif
}
else
{
logg ("!%s: No communication socket specified in %s\n", option,
cfgfile);
optfree (opts);
return 1;
}
optfree (opts);
return -1;
}
int
notify (const char *cfgfile)
{
char buff[20];
int sockd, bread;
if ((sockd = clamd_connect (cfgfile, "NotifyClamd")) < 0)
return 1;
if (sendln (sockd, "RELOAD", 7) < 0)
{
logg ("!NotifyClamd: Could not write to clamd socket: %s\n", strerror(errno));
closesocket (sockd);
return 1;
}
memset (buff, 0, sizeof (buff));
if ((bread = recv (sockd, buff, sizeof (buff), 0)) > 0)
{
if (!strstr (buff, "RELOADING"))
{
logg ("!NotifyClamd: Unknown answer from clamd: '%s'\n", buff);
closesocket (sockd);
return -1;
}
}
closesocket (sockd);
logg ("Clamd successfully notified about the update.\n");
return 0;
}
#endif
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