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/* the Music Player Daemon (MPD)
* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "listen.h"
#include "interface.h"
#include "conf.h"
#include "log.h"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <netdb.h>
#include <string.h>
#include <errno.h>
#include <resolv.h>
#include <fcntl.h>
#define MAXHOSTNAME 1024
#define ALLOW_REUSE 1
int listenSocket;
#ifdef HAVE_IPV6
int ipv6Supported() {
int s;
s = socket(AF_INET6,SOCK_STREAM,0);
if(s == -1) return 0;
close(s);
return 1;
}
#endif
int establish(unsigned short port) {
int allowReuse = ALLOW_REUSE;
int sock;
struct sockaddr * addrp;
socklen_t addrlen;
struct sockaddr_in sin;
int pf;
#ifdef HAVE_IPV6
struct sockaddr_in6 sin6;
memset(&sin6, 0, sizeof(struct sockaddr_in6));
sin6.sin6_port = htons(port);
sin6.sin6_family = AF_INET6;
#endif
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_port = htons(port);
sin.sin_family = AF_INET;
if(strcmp((getConf())[CONF_BIND_TO_ADDRESS],"any")==0) {
#ifdef HAVE_IPV6
if(ipv6Supported()) {
sin6.sin6_addr = in6addr_any;
addrp = (struct sockaddr *) &sin6;
addrlen = sizeof(struct sockaddr_in6);
}
else
#endif
{
sin.sin_addr.s_addr = INADDR_ANY;
addrp = (struct sockaddr *) &sin;
addrlen = sizeof(struct sockaddr_in);
}
}
else {
struct hostent * he;
if(!(he = gethostbyname((getConf())[CONF_BIND_TO_ADDRESS]))) {
ERROR("can't lookup host \"%s\"\n",
(getConf())[CONF_BIND_TO_ADDRESS]);
exit(-1);
}
switch(he->h_addrtype) {
#ifdef HAVE_IPV6
case AF_INET6:
if(!ipv6Supported()) {
ERROR("no IPv6 support, but a IPv6 address "
"found for \"%s\"\n",
(getConf())[CONF_BIND_TO_ADDRESS]);
exit(-1);
}
bcopy((char *)he->h_addr,(char *)
&sin6.sin6_addr.s6_addr,he->h_length);
addrp = (struct sockaddr *) &sin6;
addrlen = sizeof(struct sockaddr_in6);
break;
#endif
case AF_INET:
bcopy((char *)he->h_addr,(char *)&sin.sin_addr.s_addr,
he->h_length);
addrp = (struct sockaddr *) &sin;
addrlen = sizeof(struct sockaddr_in);
break;
default:
ERROR("address type for \"%s\" is not IPv4 or IPv6\n",
(getConf())[CONF_BIND_TO_ADDRESS]);
exit(-1);
}
}
switch(addrp->sa_family) {
case AF_INET:
pf = PF_INET;
break;
#ifdef HAVE_IPV6
case AF_INET6:
pf = PF_INET6;
break;
#endif
case AF_UNIX:
pf = PF_UNIX;
break;
default:
ERROR("unknown address family: %i\n",addrp->sa_family);
return -1;
}
if((sock = socket(pf,SOCK_STREAM,0)) < 0) {
ERROR("socket < 0\n");
return -1;
}
if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(char *)&allowReuse,
sizeof(allowReuse))<0)
{
close(sock);
ERROR("problems setsockopt'ing\n");
return -1;
}
if(bind(sock,addrp,addrlen)<0) {
ERROR("unable to bind port %i, maybe MPD is still running?\n",
port);
close(sock);
return -1;
}
if(listen(sock,5)<0) {
close(sock);
ERROR("problems listen'ing\n");
return -1;
}
return sock;
}
void getConnections(int sock) {
fd_set fdsr;
int fd = 0;
struct timeval tv;
struct sockaddr sockAddr;
socklen_t socklen = sizeof(sockAddr);
tv.tv_sec = tv.tv_usec = 0;
fflush(NULL);
FD_ZERO(&fdsr);
FD_SET(sock,&fdsr);
if(select(sock+1,&fdsr,NULL,NULL,&tv)==1 &&
((fd = accept(sock,&sockAddr,&socklen)) >= 0)) {
openAInterface(fd,&sockAddr);
}
else if(fd<0) ERROR("Problems accept()'ing\n");
}
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