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/* $Id: minissdpc.c,v 1.7 2008/12/18 17:45:48 nanard Exp $ */
/* Project : miniupnp
* Author : Thomas BERNARD
* copyright (c) 2005-2008 Thomas Bernard
* This software is subjet to the conditions detailed in the
* provided LICENCE file. */
/*#include <syslog.h>*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#ifdef WIN32
#include <winsock2.h>
#include <Ws2tcpip.h>
#include <io.h>
#else
#include <sys/socket.h>
#include <sys/un.h>
#endif
#include "minissdpc.h"
#include "miniupnpc.h"
#include "codelength.h"
struct UPNPDev *
getDevicesFromMiniSSDPD (const char *devtype, const char *socketpath)
{
struct UPNPDev *tmp;
struct UPNPDev *devlist = NULL;
unsigned char buffer[2048];
ssize_t n;
unsigned char *p;
unsigned char *url;
unsigned int i;
unsigned int urlsize, stsize, usnsize, l;
int s;
struct sockaddr_un addr;
s = socket (AF_UNIX, SOCK_STREAM, 0);
if (s < 0)
{
/*syslog(LOG_ERR, "socket(unix): %m"); */
perror ("socket(unix)");
return NULL;
}
addr.sun_family = AF_UNIX;
strncpy (addr.sun_path, socketpath, sizeof (addr.sun_path));
if (connect (s, (struct sockaddr *) &addr, sizeof (struct sockaddr_un)) < 0)
{
/*syslog(LOG_WARNING, "connect(\"%s\"): %m", socketpath); */
close (s);
return NULL;
}
stsize = strlen (devtype);
buffer[0] = 1; /* request type 1 : request devices/services by type */
p = buffer + 1;
l = stsize;
CODELENGTH (l, p);
memcpy (p, devtype, stsize);
p += stsize;
if (write (s, buffer, p - buffer) < 0)
{
/*syslog(LOG_ERR, "write(): %m"); */
perror ("minissdpc.c: write()");
close (s);
return NULL;
}
n = read (s, buffer, sizeof (buffer));
if (n <= 0)
{
perror ("minissdpc.c: read()");
close (s);
return NULL;
}
p = buffer + 1;
for (i = 0; i < buffer[0]; i++)
{
if (p + 2 >= buffer + sizeof (buffer))
break;
DECODELENGTH (urlsize, p);
if (p + urlsize + 2 >= buffer + sizeof (buffer))
break;
url = p;
p += urlsize;
DECODELENGTH (stsize, p);
if (p + stsize + 2 >= buffer + sizeof (buffer))
break;
tmp =
(struct UPNPDev *) malloc (sizeof (struct UPNPDev) + urlsize +
stsize);
tmp->pNext = devlist;
tmp->descURL = tmp->buffer;
tmp->st = tmp->buffer + 1 + urlsize;
memcpy (tmp->buffer, url, urlsize);
tmp->buffer[urlsize] = '\0';
memcpy (tmp->buffer + urlsize + 1, p, stsize);
p += stsize;
tmp->buffer[urlsize + 1 + stsize] = '\0';
devlist = tmp;
/* added for compatibility with recent versions of MiniSSDPd
* >= 2007/12/19 */
DECODELENGTH (usnsize, p);
p += usnsize;
if (p > buffer + sizeof (buffer))
break;
}
close (s);
return devlist;
}
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