/*

  *  Copyright (C) 2002 - 2005 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.

  */

 #ifdef        _MSC_VER
 #include <windows.h>
 #include <winsock.h>
 #endif
 

 #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	C_WINDOWS

 #include <sys/socket.h>
 #include <sys/un.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>

 #include <netdb.h>

 #endif

 #include <string.h>

 #include "shared/cfgparser.h"
 #include "shared/output.h"

 #include "notify.h"

 #ifndef	C_WINDOWS
 #define	closesocket(s)	close(s)
 #endif
 

 int notify(const char *cfgfile)
 {
 	char buff[20];

 #ifndef	C_WINDOWS

 	struct sockaddr_un server;

 #endif

         struct sockaddr_in server2;

 	struct hostent *he;

 	struct cfgstruct *copt;
 	const struct cfgstruct *cpt;

 	int sockd, bread;

 	const char *socktype;

     if((copt = getcfg(cfgfile, 1)) == NULL) {

 	logg("^Clamd was NOT notified: Can't find or parse configuration file %s\n", cfgfile);

 	return 1;
     }
 

 #ifndef	C_WINDOWS

     if((cpt = cfgopt(copt, "LocalSocket"))->enabled) {

 	socktype = "UNIX";

 	server.sun_family = AF_UNIX;

 	strncpy(server.sun_path, cpt->strarg, sizeof(server.sun_path));

 
 	if((sockd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {

 	    logg("^Clamd was NOT notified: Can't create socket endpoint for %s\n", cpt->strarg);

 	    perror("socket()");

 	    freecfg(copt);

 	    return 1;
 	}
 
 	if(connect(sockd, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) {

 	    closesocket(sockd);

 	    logg("^Clamd was NOT notified: Can't connect to clamd through %s\n", cpt->strarg);

 	    perror("connect()");

 	    freecfg(copt);

 	    return 1;
 	}
 

     } else
 #endif
     if((cpt = cfgopt(copt, "TCPSocket"))->enabled) {

 	socktype = "TCP";

 #ifdef PF_INET
 	if((sockd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
 #else
 	if((sockd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
 #endif

 	    logg("^Clamd was NOT notified: Can't create TCP socket\n");

 	    perror("socket()");

 	    freecfg(copt);

 	    return 1;
 	}
 
 	server2.sin_family = AF_INET;
 	server2.sin_port = htons(cpt->numarg);
 

 	if((cpt = cfgopt(copt, "TCPAddr"))->enabled) {

 	    if ((he = gethostbyname(cpt->strarg)) == 0) {
 		perror("gethostbyname()");

 		logg("^Clamd was NOT notified: Can't resolve hostname '%s'\n", cpt->strarg);

 		freecfg(copt);

 		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) {

 	    closesocket(sockd);

 	    logg("^Clamd was NOT notified: Can't connect to clamd on %s:%d\n",

 		    inet_ntoa(server2.sin_addr), ntohs(server2.sin_port));

 	    perror("connect()");

 	    freecfg(copt);

 	    return 1;
 	}
 
     } else {

 	logg("^Clamd was NOT notified: No socket specified in %s\n", cfgfile);

 	freecfg(copt);

 	return 1;
     }
 

     if(send(sockd, "RELOAD", 6, 0) < 0) {

 	logg("^Clamd was NOT notified: Could not write to %s socket\n", socktype);

 	perror("write()");

 	closesocket(sockd);

 	freecfg(copt);

 	return 1;
     }
 

     /* TODO: Handle timeout */

     memset(buff, 0, sizeof(buff));

     if((bread = recv(sockd, buff, sizeof(buff), 0)) > 0)

 	if(!strstr(buff, "RELOADING")) {

 	    logg("^Clamd was NOT notified: Unknown answer from clamd: '%s'\n", buff);

 	    closesocket(sockd);

 	    freecfg(copt);

 	    return 1;
 	}
 

     closesocket(sockd);

     logg("Clamd successfully notified about the update.\n");

     freecfg(copt);

     return 0;
 }

 
 #endif