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/* MiniDLNA media server
* This file is part of MiniDLNA.
*
* The code herein is based on the MiniUPnP Project.
* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
*
* Copyright (c) 2006, Thomas Bernard
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include "minidlnapath.h"
#include "upnphttp.h"
#include "upnpglobalvars.h"
#include "upnpreplyparse.h"
#include "getifaddr.h"
#include "minissdp.h"
#include "codelength.h"
#include "utils.h"
#include "log.h"
/* SSDP ip/port */
#define SSDP_PORT (1900)
#define SSDP_MCAST_ADDR ("239.255.255.250")
static int
AddMulticastMembership(int s, struct lan_addr_s *iface)
{
int ret;
#ifdef HAVE_STRUCT_IP_MREQN
struct ip_mreqn imr; /* Ip multicast membership */
/* setting up imr structure */
memset(&imr, '\0', sizeof(imr));
imr.imr_multiaddr.s_addr = inet_addr(SSDP_MCAST_ADDR);
imr.imr_ifindex = iface->ifindex;
#else
struct ip_mreq imr; /* Ip multicast membership */
/* setting up imr structure */
memset(&imr, '\0', sizeof(imr));
imr.imr_multiaddr.s_addr = inet_addr(SSDP_MCAST_ADDR);
imr.imr_interface.s_addr = iface->addr.s_addr;
#endif
/* Setting the socket options will guarantee, tha we will only receive
* multicast traffic on a specific Interface.
* In addition the kernel is instructed to send an igmp message (choose
* mcast group) on the specific interface/subnet. */
ret = setsockopt(s, IPPROTO_IP, IP_ADD_MEMBERSHIP, (void *)&imr, sizeof(imr));
if (ret < 0 && errno != EADDRINUSE)
{
DPRINTF(E_ERROR, L_SSDP, "setsockopt(udp, IP_ADD_MEMBERSHIP): %s\n",
strerror(errno));
return -1;
}
return 0;
}
/* Open and configure the socket listening for
* SSDP udp packets sent on 239.255.255.250 port 1900 */
int
OpenAndConfSSDPReceiveSocket(void)
{
int s;
int i = 1;
struct sockaddr_in sockname;
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0)
{
DPRINTF(E_ERROR, L_SSDP, "socket(udp): %s\n", strerror(errno));
return -1;
}
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i)) < 0)
DPRINTF(E_WARN, L_SSDP, "setsockopt(udp, SO_REUSEADDR): %s\n", strerror(errno));
#ifdef __linux__
if (setsockopt(s, IPPROTO_IP, IP_PKTINFO, &i, sizeof(i)) < 0)
DPRINTF(E_WARN, L_SSDP, "setsockopt(udp, IP_PKTINFO): %s\n", strerror(errno));
#endif
memset(&sockname, 0, sizeof(struct sockaddr_in));
sockname.sin_family = AF_INET;
sockname.sin_port = htons(SSDP_PORT);
/* NOTE: Binding a socket to a UDP multicast address means, that we just want
* to receive datagramms send to this multicast address.
* To specify the local nics we want to use we have to use setsockopt,
* see AddMulticastMembership(...). */
sockname.sin_addr.s_addr = inet_addr(SSDP_MCAST_ADDR);
if (bind(s, (struct sockaddr *)&sockname, sizeof(struct sockaddr_in)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "bind(udp): %s\n", strerror(errno));
close(s);
return -1;
}
return s;
}
/* open the UDP socket used to send SSDP notifications to
* the multicast group reserved for them */
int
OpenAndConfSSDPNotifySocket(struct lan_addr_s *iface)
{
int s;
unsigned char loopchar = 0;
int bcast = 1;
uint8_t ttl = 4;
struct in_addr mc_if;
struct sockaddr_in sockname;
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0)
{
DPRINTF(E_ERROR, L_SSDP, "socket(udp_notify): %s\n", strerror(errno));
return -1;
}
mc_if.s_addr = iface->addr.s_addr;
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, (char *)&loopchar, sizeof(loopchar)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "setsockopt(udp_notify, IP_MULTICAST_LOOP): %s\n", strerror(errno));
close(s);
return -1;
}
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, (char *)&mc_if, sizeof(mc_if)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "setsockopt(udp_notify, IP_MULTICAST_IF): %s\n", strerror(errno));
close(s);
return -1;
}
setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl));
if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &bcast, sizeof(bcast)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "setsockopt(udp_notify, SO_BROADCAST): %s\n", strerror(errno));
close(s);
return -1;
}
memset(&sockname, 0, sizeof(struct sockaddr_in));
sockname.sin_family = AF_INET;
sockname.sin_addr.s_addr = iface->addr.s_addr;
if (bind(s, (struct sockaddr *)&sockname, sizeof(struct sockaddr_in)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "bind(udp_notify): %s\n", strerror(errno));
close(s);
return -1;
}
if (AddMulticastMembership(sssdp, iface) < 0)
{
DPRINTF(E_WARN, L_SSDP, "Failed to add multicast membership for address %s\n",
iface->str);
}
return s;
}
static const char * const known_service_types[] =
{
uuidvalue,
"upnp:rootdevice",
"urn:schemas-upnp-org:device:MediaServer:",
"urn:schemas-upnp-org:service:ContentDirectory:",
"urn:schemas-upnp-org:service:ConnectionManager:",
"urn:microsoft.com:service:X_MS_MediaReceiverRegistrar:",
0
};
static void
_usleep(long usecs)
{
struct timespec sleep_time;
sleep_time.tv_sec = 0;
sleep_time.tv_nsec = usecs * 1000;
nanosleep(&sleep_time, NULL);
}
/* not really an SSDP "announce" as it is the response
* to a SSDP "M-SEARCH" */
static void
SendSSDPResponse(int s, struct sockaddr_in sockname, int st_no,
const char *host, unsigned short port)
{
int l, n;
char buf[512];
char tmstr[30];
time_t tm = time(NULL);
/*
* follow guideline from document "UPnP Device Architecture 1.0"
* uppercase is recommended.
* DATE: is recommended
* SERVER: OS/ver UPnP/1.0 minidlna/1.0
* - check what to put in the 'Cache-Control' header
* */
strftime(tmstr, sizeof(tmstr), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&tm));
l = snprintf(buf, sizeof(buf), "HTTP/1.1 200 OK\r\n"
"CACHE-CONTROL: max-age=%u\r\n"
"DATE: %s\r\n"
"ST: %s%s\r\n"
"USN: %s%s%s%s\r\n"
"EXT:\r\n"
"SERVER: " MINIDLNA_SERVER_STRING "\r\n"
"LOCATION: http://%s:%u" ROOTDESC_PATH "\r\n"
"Content-Length: 0\r\n"
"\r\n",
(runtime_vars.notify_interval<<1)+10,
tmstr,
known_service_types[st_no],
(st_no > 1 ? "1" : ""),
uuidvalue,
(st_no > 0 ? "::" : ""),
(st_no > 0 ? known_service_types[st_no] : ""),
(st_no > 1 ? "1" : ""),
host, (unsigned int)port);
DPRINTF(E_DEBUG, L_SSDP, "Sending M-SEARCH response to %s:%d ST: %s\n",
inet_ntoa(sockname.sin_addr), ntohs(sockname.sin_port),
known_service_types[st_no]);
n = sendto(s, buf, l, 0,
(struct sockaddr *)&sockname, sizeof(struct sockaddr_in) );
if (n < 0)
DPRINTF(E_ERROR, L_SSDP, "sendto(udp): %s\n", strerror(errno));
}
void
SendSSDPNotifies(int s, const char *host, unsigned short port,
unsigned int interval)
{
struct sockaddr_in sockname;
int l, n, dup, i=0;
unsigned int lifetime;
char bufr[512];
memset(&sockname, 0, sizeof(struct sockaddr_in));
sockname.sin_family = AF_INET;
sockname.sin_port = htons(SSDP_PORT);
sockname.sin_addr.s_addr = inet_addr(SSDP_MCAST_ADDR);
lifetime = (interval << 1) + 10;
for (dup = 0; dup < 2; dup++)
{
if (dup)
_usleep(200000);
i = 0;
while (known_service_types[i])
{
l = snprintf(bufr, sizeof(bufr),
"NOTIFY * HTTP/1.1\r\n"
"HOST:%s:%d\r\n"
"CACHE-CONTROL:max-age=%u\r\n"
"LOCATION:http://%s:%d" ROOTDESC_PATH"\r\n"
"SERVER: " MINIDLNA_SERVER_STRING "\r\n"
"NT:%s%s\r\n"
"USN:%s%s%s%s\r\n"
"NTS:ssdp:alive\r\n"
"\r\n",
SSDP_MCAST_ADDR, SSDP_PORT,
lifetime,
host, port,
known_service_types[i],
(i > 1 ? "1" : ""),
uuidvalue,
(i > 0 ? "::" : ""),
(i > 0 ? known_service_types[i] : ""),
(i > 1 ? "1" : ""));
if (l >= sizeof(bufr))
{
DPRINTF(E_WARN, L_SSDP, "SendSSDPNotifies(): truncated output\n");
l = sizeof(bufr);
}
DPRINTF(E_MAXDEBUG, L_SSDP, "Sending ssdp:alive [%d]\n", s);
n = sendto(s, bufr, l, 0,
(struct sockaddr *)&sockname, sizeof(struct sockaddr_in));
if (n < 0)
DPRINTF(E_ERROR, L_SSDP, "sendto(udp_notify=%d, %s): %s\n", s, host, strerror(errno));
i++;
}
}
}
static void
ParseUPnPClient(char *location)
{
char buf[8192];
struct sockaddr_in dest;
int s, n, do_headers = 0, nread = 0;
struct timeval tv;
char *addr, *path, *port_str;
long port = 80;
char *off = NULL, *p;
int content_len = sizeof(buf);
struct NameValueParserData xml;
struct client_cache_s *client;
int type = 0;
char *model, *serial, *name;
if (strncmp(location, "http://", 7) != 0)
return;
path = location + 7;
port_str = strsep(&path, "/");
if (!path)
return;
addr = strsep(&port_str, ":");
if (port_str)
{
port = strtol(port_str, NULL, 10);
if (!port)
port = 80;
}
memset(&dest, '\0', sizeof(dest));
if (!inet_aton(addr, &dest.sin_addr))
return;
/* Check if the client is already in cache */
dest.sin_family = AF_INET;
dest.sin_port = htons(port);
s = socket(PF_INET, SOCK_STREAM, 0);
if (s < 0)
return;
tv.tv_sec = 0;
tv.tv_usec = 500000;
setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
if (connect(s, (struct sockaddr*)&dest, sizeof(struct sockaddr_in)) < 0)
goto close;
n = snprintf(buf, sizeof(buf), "GET /%s HTTP/1.0\r\n"
"HOST: %s:%ld\r\n\r\n",
path, addr, port);
if (write(s, buf, n) < 1)
goto close;
while ((n = read(s, buf+nread, sizeof(buf)-nread-1)) > 0)
{
nread += n;
buf[nread] = '\0';
n = nread - 4;
p = buf;
while (!off && (n-- > 0))
{
if (p[0] == '\r' && p[1] == '\n' && p[2] == '\r' && p[3] == '\n')
{
off = p + 4;
do_headers = 1;
}
p++;
}
if (!off)
continue;
if (do_headers)
{
p = buf;
if (strncmp(p, "HTTP/", 5) != 0)
goto close;
while (*p != ' ' && *p != '\t')
p++;
/* If we don't get a 200 status, ignore it */
if (strtol(p, NULL, 10) != 200)
goto close;
p = strcasestr(p, "Content-Length:");
if (p)
content_len = strtol(p+15, NULL, 10);
do_headers = 0;
}
if ((buf + nread - off) >= content_len)
break;
}
close:
close(s);
if (!off)
return;
nread -= off - buf;
ParseNameValue(off, nread, &xml, 0);
model = GetValueFromNameValueList(&xml, "modelName");
serial = GetValueFromNameValueList(&xml, "serialNumber");
name = GetValueFromNameValueList(&xml, "friendlyName");
if (model)
{
int i;
DPRINTF(E_DEBUG, L_SSDP, "Model: %s\n", model);
for (i = 0; client_types[i].name; i++)
{
if (client_types[i].match_type != EModelName)
continue;
if (strstr(model, client_types[i].match) != NULL)
{
type = i;
break;
}
}
/* Special Samsung handling. It's very hard to tell Series A from B */
if (type > 0 && client_types[type].type == ESamsungSeriesB)
{
if (serial)
{
DPRINTF(E_DEBUG, L_SSDP, "Serial: %s\n", serial);
/* The Series B I saw was 20081224DMR. Series A should be older than that. */
if (atoi(serial) < 20081201)
type = 0;
}
else
{
type = 0;
}
}
if (type == 0 && name != NULL)
{
for (i = 0; client_types[i].name; i++)
{
if (client_types[i].match_type != EFriendlyNameSSDP)
continue;
if (strcmp(name, client_types[i].match) == 0)
{
type = i;
break;
}
}
}
}
ClearNameValueList(&xml);
if (!type)
return;
/* Add this client to the cache if it's not there already. */
client = SearchClientCache(dest.sin_addr, 1);
if (!client)
{
AddClientCache(dest.sin_addr, type);
}
else
{
client->type = &client_types[type];
client->age = time(NULL);
}
}
/* ProcessSSDPRequest()
* process SSDP M-SEARCH requests and responds to them */
void
ProcessSSDPRequest(int s, unsigned short port)
{
int n;
char bufr[1500];
struct sockaddr_in sendername;
int i;
char *st = NULL, *mx = NULL, *man = NULL, *mx_end = NULL;
int man_len = 0;
#ifdef __linux__
char cmbuf[CMSG_SPACE(sizeof(struct in_pktinfo))];
struct iovec iovec = {
.iov_base = bufr,
.iov_len = sizeof(bufr)-1
};
struct msghdr mh = {
.msg_name = &sendername,
.msg_namelen = sizeof(struct sockaddr_in),
.msg_iov = &iovec,
.msg_iovlen = 1,
.msg_control = cmbuf,
.msg_controllen = sizeof(cmbuf)
};
n = recvmsg(s, &mh, 0);
#else
socklen_t len_r = sizeof(struct sockaddr_in);
n = recvfrom(s, bufr, sizeof(bufr)-1, 0,
(struct sockaddr *)&sendername, &len_r);
#endif
if (n < 0)
{
DPRINTF(E_ERROR, L_SSDP, "recvfrom(udp): %s\n", strerror(errno));
return;
}
bufr[n] = '\0';
n -= 2;
if (memcmp(bufr, "NOTIFY", 6) == 0)
{
char *loc = NULL, *srv = NULL, *nts = NULL, *nt = NULL;
int loc_len = 0;
//DEBUG DPRINTF(E_DEBUG, L_SSDP, "Received SSDP notify:\n%.*s", n, bufr);
for (i = 0; i < n; i++)
{
if( bufr[i] == '*' )
break;
}
if (strcasestrc(bufr+i, "HTTP/1.1", '\r') == NULL)
return;
while (i < n)
{
while ((i < n) && (bufr[i] != '\r' || bufr[i+1] != '\n'))
i++;
i += 2;
if (strncasecmp(bufr+i, "SERVER:", 7) == 0)
{
srv = bufr+i+7;
while (*srv == ' ' || *srv == '\t')
srv++;
}
else if (strncasecmp(bufr+i, "LOCATION:", 9) == 0)
{
loc = bufr+i+9;
while (*loc == ' ' || *loc == '\t')
loc++;
while (loc[loc_len]!='\r' && loc[loc_len]!='\n')
loc_len++;
}
else if (strncasecmp(bufr+i, "NTS:", 4) == 0)
{
nts = bufr+i+4;
while (*nts == ' ' || *nts == '\t')
nts++;
}
else if (strncasecmp(bufr+i, "NT:", 3) == 0)
{
nt = bufr+i+3;
while(*nt == ' ' || *nt == '\t')
nt++;
}
}
if (!loc || !srv || !nt || !nts || (strncmp(nts, "ssdp:alive", 10) != 0) ||
(strncmp(nt, "urn:schemas-upnp-org:device:MediaRenderer", 41) != 0))
return;
loc[loc_len] = '\0';
if ((strncmp(srv, "Allegro-Software-RomPlug", 24) == 0) || /* Roku */
(strstr(loc, "SamsungMRDesc.xml") != NULL) || /* Samsung TV */
(strstrc(srv, "DigiOn DiXiM", '\r') != NULL)) /* Marantz Receiver */
{
/* Check if the client is already in cache */
struct client_cache_s *client = SearchClientCache(sendername.sin_addr, 1);
if (client)
{
if (client->type->type < EStandardDLNA150 &&
client->type->type != ESamsungSeriesA)
{
client->age = time(NULL);
return;
}
}
ParseUPnPClient(loc);
}
}
else if (memcmp(bufr, "M-SEARCH", 8) == 0)
{
int st_len = 0, mx_len = 0, mx_val = 0;
//DPRINTF(E_DEBUG, L_SSDP, "Received SSDP request:\n%.*s\n", n, bufr);
for (i = 0; i < n; i++)
{
if (bufr[i] == '*')
break;
}
if (strcasestrc(bufr+i, "HTTP/1.1", '\r') == NULL)
return;
while (i < n)
{
while ((i < n) && (bufr[i] != '\r' || bufr[i+1] != '\n'))
i++;
i += 2;
if (strncasecmp(bufr+i, "ST:", 3) == 0)
{
st = bufr+i+3;
st_len = 0;
while (*st == ' ' || *st == '\t')
st++;
while (st[st_len]!='\r' && st[st_len]!='\n')
st_len++;
}
else if (strncasecmp(bufr+i, "MX:", 3) == 0)
{
mx = bufr+i+3;
mx_len = 0;
while (*mx == ' ' || *mx == '\t')
mx++;
while (mx[mx_len]!='\r' && mx[mx_len]!='\n')
mx_len++;
mx_val = strtol(mx, &mx_end, 10);
}
else if (strncasecmp(bufr+i, "MAN:", 4) == 0)
{
man = bufr+i+4;
man_len = 0;
while (*man == ' ' || *man == '\t')
man++;
while (man[man_len]!='\r' && man[man_len]!='\n')
man_len++;
}
}
/*DPRINTF(E_INFO, L_SSDP, "SSDP M-SEARCH packet received from %s:%d\n",
inet_ntoa(sendername.sin_addr), ntohs(sendername.sin_port) );*/
if (GETFLAG(DLNA_STRICT_MASK) && (ntohs(sendername.sin_port) <= 1024 || ntohs(sendername.sin_port) == 1900))
{
DPRINTF(E_INFO, L_SSDP, "WARNING: Ignoring invalid SSDP M-SEARCH from %s [bad source port %d]\n",
inet_ntoa(sendername.sin_addr), ntohs(sendername.sin_port));
}
else if (!man || (strncmp(man, "\"ssdp:discover\"", 15) != 0))
{
DPRINTF(E_INFO, L_SSDP, "WARNING: Ignoring invalid SSDP M-SEARCH from %s [bad %s header '%.*s']\n",
inet_ntoa(sendername.sin_addr), "MAN", man_len, man);
}
else if (!mx || mx == mx_end || mx_val < 0)
{
DPRINTF(E_INFO, L_SSDP, "WARNING: Ignoring invalid SSDP M-SEARCH from %s [bad %s header '%.*s']\n",
inet_ntoa(sendername.sin_addr), "MX", mx_len, mx);
}
else if (st && (st_len > 0))
{
int l;
#ifdef __linux__
char host[40] = "127.0.0.1";
struct cmsghdr *cmsg;
/* find the interface we received the msg from */
for (cmsg = CMSG_FIRSTHDR(&mh); cmsg; cmsg = CMSG_NXTHDR(&mh, cmsg))
{
struct in_addr addr;
struct in_pktinfo *pi;
/* ignore the control headers that don't match what we want */
if (cmsg->cmsg_level != IPPROTO_IP ||
cmsg->cmsg_type != IP_PKTINFO)
continue;
pi = (struct in_pktinfo *)CMSG_DATA(cmsg);
addr = pi->ipi_spec_dst;
inet_ntop(AF_INET, &addr, host, sizeof(host));
}
#else
const char *host;
int iface = 0;
/* find in which sub network the client is */
for (i = 0; i < n_lan_addr; i++)
{
if((sendername.sin_addr.s_addr & lan_addr[i].mask.s_addr) ==
(lan_addr[i].addr.s_addr & lan_addr[i].mask.s_addr))
{
iface = i;
break;
}
}
if (n_lan_addr == i)
{
DPRINTF(E_DEBUG, L_SSDP, "Ignoring SSDP M-SEARCH on other interface [%s]\n",
inet_ntoa(sendername.sin_addr));
return;
}
host = lan_addr[iface].str;
#endif
DPRINTF(E_DEBUG, L_SSDP, "SSDP M-SEARCH from %s:%d ST: %.*s, MX: %.*s, MAN: %.*s\n",
inet_ntoa(sendername.sin_addr),
ntohs(sendername.sin_port),
st_len, st, mx_len, mx, man_len, man);
/* Responds to request with a device as ST header */
for (i = 0; known_service_types[i]; i++)
{
l = strlen(known_service_types[i]);
if ((l > st_len) || (memcmp(st, known_service_types[i], l) != 0))
continue;
if (st_len != l)
{
/* Check version number - we only support 1. */
if ((st[l-1] == ':') && (st[l] == '1'))
l++;
while (l < st_len)
{
if (isdigit(st[l]))
break;
if (isspace(st[l]))
{
l++;
continue;
}
DPRINTF(E_MAXDEBUG, L_SSDP,
"Ignoring SSDP M-SEARCH with bad extra data '%c' [%s]\n",
st[l], inet_ntoa(sendername.sin_addr));
break;
}
if (l != st_len)
break;
}
_usleep(random()>>20);
SendSSDPResponse(s, sendername, i,
host, port);
return;
}
/* Responds to request with ST: ssdp:all */
/* strlen("ssdp:all") == 8 */
if ((st_len == 8) && (memcmp(st, "ssdp:all", 8) == 0))
{
for (i=0; known_service_types[i]; i++)
{
l = strlen(known_service_types[i]);
SendSSDPResponse(s, sendername, i,
host, port);
}
}
}
else
{
DPRINTF(E_INFO, L_SSDP, "Invalid SSDP M-SEARCH from %s:%d\n",
inet_ntoa(sendername.sin_addr), ntohs(sendername.sin_port));
}
}
else if (memcmp(bufr, "YOUKU-NOTIFY", 12) == 0)
{
return;
}
else
{
DPRINTF(E_WARN, L_SSDP, "Unknown udp packet received from %s:%d\n",
inet_ntoa(sendername.sin_addr), ntohs(sendername.sin_port));
}
}
/* This will broadcast ssdp:byebye notifications to inform
* the network that UPnP is going down. */
int
SendSSDPGoodbyes(int s)
{
struct sockaddr_in sockname;
int n, l;
int i;
int dup, ret = 0;
char bufr[512];
memset(&sockname, 0, sizeof(struct sockaddr_in));
sockname.sin_family = AF_INET;
sockname.sin_port = htons(SSDP_PORT);
sockname.sin_addr.s_addr = inet_addr(SSDP_MCAST_ADDR);
for (dup = 0; dup < 2; dup++)
{
for (i = 0; known_service_types[i]; i++)
{
l = snprintf(bufr, sizeof(bufr),
"NOTIFY * HTTP/1.1\r\n"
"HOST:%s:%d\r\n"
"NT:%s%s\r\n"
"USN:%s%s%s%s\r\n"
"NTS:ssdp:byebye\r\n"
"\r\n",
SSDP_MCAST_ADDR, SSDP_PORT,
known_service_types[i],
(i > 1 ? "1" : ""), uuidvalue,
(i > 0 ? "::" : ""),
(i > 0 ? known_service_types[i] : ""),
(i > 1 ? "1" : ""));
DPRINTF(E_MAXDEBUG, L_SSDP, "Sending ssdp:byebye [%d]\n", s);
n = sendto(s, bufr, l, 0,
(struct sockaddr *)&sockname, sizeof(struct sockaddr_in) );
if (n < 0)
{
DPRINTF(E_ERROR, L_SSDP, "sendto(udp_shutdown=%d): %s\n", s, strerror(errno));
ret = -1;
break;
}
}
}
return ret;
}
/* SubmitServicesToMiniSSDPD() :
* register services offered by MiniUPnPd to a running instance of
* MiniSSDPd */
int
SubmitServicesToMiniSSDPD(const char *host, unsigned short port)
{
struct sockaddr_un addr;
int s;
unsigned char buffer[2048];
char strbuf[256];
unsigned char *p;
int i, l;
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s < 0)
{
DPRINTF(E_ERROR, L_SSDP, "socket(unix): %s", strerror(errno));
return -1;
}
addr.sun_family = AF_UNIX;
strncpyt(addr.sun_path, minissdpdsocketpath, sizeof(addr.sun_path));
if (connect(s, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "connect(\"%s\"): %s",
minissdpdsocketpath, strerror(errno));
close(s);
return -1;
}
for (i = 0; known_service_types[i]; i++)
{
buffer[0] = 4;
p = buffer + 1;
l = strlen(known_service_types[i]);
if (i > 0)
l++;
CODELENGTH(l, p);
memcpy(p, known_service_types[i], l);
if (i > 0)
p[l-1] = '1';
p += l;
l = snprintf(strbuf, sizeof(strbuf), "%s::%s%s",
uuidvalue, known_service_types[i], (i==0)?"":"1");
CODELENGTH(l, p);
memcpy(p, strbuf, l);
p += l;
l = strlen(MINIDLNA_SERVER_STRING);
CODELENGTH(l, p);
memcpy(p, MINIDLNA_SERVER_STRING, l);
p += l;
l = snprintf(strbuf, sizeof(strbuf), "http://%s:%u" ROOTDESC_PATH,
host, (unsigned int)port);
CODELENGTH(l, p);
memcpy(p, strbuf, l);
p += l;
if(write(s, buffer, p - buffer) < 0)
{
DPRINTF(E_ERROR, L_SSDP, "write(): %s", strerror(errno));
close(s);
return -1;
}
}
close(s);
return 0;
}
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