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octonet/octoserve/ssdp.c

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/*
(C) 2012-14 Digital Devices GmbH.
This file is part of the octoserve SAT>IP server.
Octoserve 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 3 of the License, or
(at your option) any later version.
Octoserve 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 octoserve. If not, see <http://www.gnu.org/licenses/>.
*/
#include "octoserve.h"
extern struct rtsp_error rtsp_errors;
extern uint32_t debug;
static void ssdp_reset_setup(struct os_ssdp *ss)
{
ss->setup = 0;
time(&ss->setupt);
ss->setupt += 5;
time(&ss->annt);
}
static int read_id(char *type, uint32_t *id)
{
int fd, len;
char name[80];
len = snprintf(name, 80, "/config/%s.id", type);
if (len < 0 || len == 80)
return -1;
fd = open(name, O_RDONLY);
if (fd < 0)
return -1;
printf("read id from %s\n", name);
len = read(fd, name, 80);
name[len] = 0;
*id = strtol(name, NULL, 10);
printf("%s.id = %d\n", type, *id);
return 0;
}
static int write_id(char *type, uint32_t id)
{
int fd, len;
char name[80];
len = snprintf(name, 80, "/config/%s.id", type);
if (len < 0 || len == 80)
return -1;
fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 00644);
if (fd < 0)
return -1;
printf("write id = %d to %s\n", id, name);
len = snprintf(name, 80, "%d", id);
write(fd, name, len);
close(fd);
return 0;
}
static int ssdp_msg(struct os_ssdp *ss, char *buf, int n, int notify, int nr, int v6, int send_id)
{
int len;
uint8_t *u = ss->uuid;
char uuid[37];
char *header = notify ?
"NOTIFY * HTTP/1.1\r\nHOST: 239.255.255.250:1900\r\n" :
"HTTP/1.1 200 OK\r\n";
char id[32];
if (send_id) {
len = snprintf(id, sizeof(id),
"DEVICEID.SES.COM: %d",
ss->devid);
if (len < 0 || len >= sizeof(id))
return -1;
} else
id[0] = 0;
if (ss->alive) {
len = snprintf(buf, n,
"%s"
"CACHE-CONTROL: max-age=1800\r\n"
"LOCATION: http://%s%s\r\n"
"NT: %s\r\n"
"NTS: ssdp:%s\r\n"
"SERVER: %s\r\n"
"USN: %s%s%s\r\n"
"BOOTID.UPNP.ORG: %d\r\n"
"CONFIGID.UPNP.ORG: %d\r\n"
"%s\r\n"
"\r\n",
header,
v6 ? ss->ip6 : ss->ip,
ss->dev[nr].loc,
ss->dev[nr].nt[0] ? ss->dev[nr].nt : ss->dev[nr].uuid,
"alive",
ss->dev[nr].server,
ss->dev[nr].uuid, ss->dev[nr].nt[0] ? "::" : "", ss->dev[nr].nt,
ss->bootid, ss->configid,
id
);
} else {
dbgprintf(DEBUG_SSDP, "BYEBYE\n");
len = snprintf(buf, n,
"%s"
"NT: %s\r\n"
"NTS: ssdp:byebye\r\n"
"USN: %s%s%s\r\n"
"BOOTID.UPNP.ORG: %d\r\n"
"CONFIGID.UPNP.ORG: %d\r\n"
"\r\n",
header,
ss->dev[nr].nt[0] ? ss->dev[nr].nt : ss->dev[nr].uuid,
ss->dev[nr].uuid, ss->dev[nr].nt[0] ? "::" : "", ss->dev[nr].nt,
ss->bootid, ss->configid
);
}
return len;
}
static int sendto_port(int sock, const void *buf, size_t len,
struct sockaddr_in *cadr, uint16_t port)
{
struct sockaddr_in adr = *cadr;
adr.sin_port = htons(port);
return sendto(sock, buf, len, 0, (struct sockaddr *) &adr, sizeof(adr));
}
static int send_ssdp_msg(struct os_ssdp *ss, int nr, int notify)
{
uint8_t buf[2048];
int len;
len = ssdp_msg(ss, buf, sizeof(buf), notify, nr, 0, nr < 3);
if (len < 0 || len >= sizeof(buf))
return -1;
if (notify) {
struct sockaddr_in insadr;
memset(&insadr, 0, sizeof(insadr));
insadr.sin_family = AF_INET;
insadr.sin_port = htons(1900);
insadr.sin_addr.s_addr = inet_addr("239.255.255.250");
return sendto(ss->sock, buf, len, 0, (struct sockaddr *) &insadr, sizeof(insadr));
} else
return sendto(ss->sock, buf, len, 0, &ss->cadr, sizeof(struct sockaddr));
}
static int ssdp_announce(struct octoserve *os, int alive, int notify)
{
struct os_ssdp *ss = &os->ssdp;
uint8_t buf[2048];
int len, nr, res;
int s = os->ssdp.sock;
uint8_t *u = ss->uuid;
time_t t;
if (notify) {
time(&t);
if (!ss->setup)
if (t >= ss->setupt) {
ss->setup = 1;
dbgprintf(DEBUG_SSDP, "END SSDP SETUP\n");
}
if (ss->alive == alive && t < ss->annt)
return 0;
ss->alive = alive;
ss->annt = t + 900; //FIXME: +/- random
}
for (nr = 0; nr < ss->dev_num; nr++) {
send_ssdp_msg(ss, nr, notify);
}
}
static int ssdp_defend(struct os_ssdp *ss)
{
char buf[2048], host[64];
int len;
int s = ss->v6 ? ss->sock6 : ss->sock;
sockname(&ss->cadr, host);
printf("defend against HOST:%s\n", host);
len = snprintf(buf, sizeof(buf),
"M-SEARCH * HTTP/1.1\r\n"
"HOST: %s:1900\r\n"
"MAN: \"ssdp:discover\"\r\n"
"ST: urn:ses-com:device:SatIPServer:1\r\n"
"USER-AGENT: %s\r\n"
"DEVICEID.SES.COM: %d\r\n"
"\r\n",
ss->v6 ? ss->ip6 : ss->ip,
ss->server,
ss->devid);
if (len < 0 || len >= sizeof(buf))
return -1;
return sendto(s, buf, len, 0, &ss->cadr, sizeof(ss->cadr));
//return sendto_port(ss->sock, buf, len, &ss->cadr, ss->csport);
}
static int send_reply_msearch(struct os_ssdp *ss, int mc, int send_id, int nr)
{
char buf[2048], id[32];
int len, res;
int v6 = ss->v6;
int s = v6 ? ss->sock6 : ss->sock;
dbgprintf(DEBUG_SSDP, "send msearch reply nr=%d\n", nr);
if (send_id) {
len = snprintf(id, sizeof(id),
"DEVICEID.SES.COM: %d\r\n",
ss->devid);
if (len < 0 || len >= sizeof(id))
return -1;
} else
id[0] = 0;
len = snprintf(buf, sizeof(buf),
"HTTP/1.1 200 OK\r\n"
"CACHE-CONTROL: max-age=1800\r\n"
"EXT:\r\n"
"LOCATION: http://%s%s\r\n"
"SERVER: %s\r\n"
"ST: %s\r\n"
"USN: %s%s%s\r\n"
"BOOTID.UPNP.ORG: %d\r\n"
"CONFIGID.UPNP.ORG: %d\r\n"
"%s"
"\r\n",
ss->v6 ? ss->ip6 : ss->ip,
ss->dev[nr].loc,
ss->dev[nr].server,
ss->dev[nr].nt[0] ? ss->dev[nr].nt : ss->dev[nr].uuid,
ss->dev[nr].uuid, ss->dev[nr].nt[0] ? "::" : "", ss->dev[nr].nt,
ss->bootid, ss->configid, id
);
if (len < 0 || len >= sizeof(buf))
return -1;
dbgprintf(DEBUG_SSDP, "sending:\n%s", buf);
if (mc) {
struct sockaddr_in insadr;
memset(&insadr, 0, sizeof(insadr));
insadr.sin_family = AF_INET;
insadr.sin_port = htons(1900);
insadr.sin_addr.s_addr = inet_addr("239.255.255.250");
res = sendto(s, buf, len, 0, (struct sockaddr *) &insadr, sizeof(insadr));
} else
res = sendto(s, buf, len, 0, &ss->cadr, sizeof(struct sockaddr));
//res = sendto_port(ss->sock, buf, len, &ss->cadr, ss->csport);
return res;
}
static int ssdp_msearch(struct os_ssdp *ss, int mc, char *st)
{
int nr, len = strlen(st), type = 0;
uint8_t *u = ss->uuid;
if (!len)
return 0;
if (!strncasecmp(st, "ssdp:all", 8))
type = 1;
else if (!strncasecmp(st, "uuid:", 5))
type = 2;
dbgprintf(DEBUG_SSDP, "msearch mc=%u, st=%s (type=%u)\n", mc, st, type);
for (nr = 0; nr < ss->dev_num; nr++) {
if ((type == 1) ||
((type == 2) && !ss->dev[nr].nt[0] &&
!strncasecmp(ss->dev[nr].uuid, st, len)) ||
((type == 0) && !strncasecmp(ss->dev[nr].nt, st, len)))
send_reply_msearch(ss, mc, nr < 3, nr);
}
return 0;
}
static void handle_ssdp(struct octoserve *os, char *m, int ml)
{
struct os_ssdp *ss = &os->ssdp;
int ln, ll, tl, as, al;
char *l, *le, *me = m + ml, *st = NULL;
int type = 0;
int htype = 0;
int devid = -1;
int mx = -1;
uint8_t uu[16];
char host[64];
char str[INET_ADDRSTRLEN];
int sport = 1900, hport = 1900;
dbgprintf(DEBUG_SSDP,
"\n********************************************************************************\n");
inet_ntop(AF_INET, &((struct sockaddr_in *) &ss->cadr)->sin_addr, str, INET_ADDRSTRLEN);
dbgprintf(DEBUG_SSDP, "\nSSDP: %s\n", str);
memset(uu, 0, 16);
for (l = m, ln = -1; l < me; l += ll + 1) {
for (le = l; *le != '\r' && *le != '\n' && le < me; le++);
ll = le - l;
if (!ll)
continue;
*le = 0;
ln++;
dbgprintf(DEBUG_SSDP, "%02d: %s\n", ln, l);
if (ln == 0) {
if (!strncasecmp(l, "M-SEARCH * HTTP/1.1", ll)) {
type = 1;
continue;
}
if (!strncasecmp(l, "NOTIFY * HTTP/1.1", ll)) {
type = 2;
continue;
}
if (!strncasecmp(l, "HTTP/1.1 200 OK", ll)) {
type = 3;
continue;
}
dbgprintf(DEBUG_SSDP, "unknown header\n");
return;
}
for (tl = 0; tl < ll && l[tl] != ':'; tl++);
if (tl == ll)
return;
for (as = tl + 1; as < ll && isspace(l[as]); as++);
al = ll - as;
if (tl == 4 && !strncasecmp(l, "HOST", 4)) {
char *h, *p;
if (!strncmp(l + as, "239.255.255.250:1900", al))
htype = 1;
else
htype = 2;
h = host;
p = l + as;
while (*p && *p != ':')
*(h++) = *(p++);
*h = 0;
p++;
hport = atoi(p);
}
if (tl == 2 && !strncasecmp(l, "MX", tl)) {
mx = atoi(l + as);
continue;
}
if (tl == 2 && !strncasecmp(l, "ST", tl)) {
st = l + as;
continue;
}
if (tl == 16 && !memcmp(l, "DEVICEID.SES.COM", tl)) {
devid = atoi(l + as);
//dbgprintf(DEBUG_SSDP, "sat>ip device id %d\n", devid);
continue;
}
if (tl = 19 && !memcmp(l, "SEARCHPORT.UPNP.ORG", tl)) {
sport = atoi(l + as);
dbgprintf(DEBUG_SSDP, "searchport %d\n", sport);
continue;
}
if (tl == 3 && !memcmp(l, "USN", tl) && !memcmp(l+5, "uuid:", 5)) {
int n;
//printf("USN: %s\n", l+5);
sscanf(l+10, "%2hhx%2hhx%2hhx%2hhx-%2hhx%2hhx-"
"%2hhx%2hhx-%2hhx%2hhx-%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx%n",
&uu[0], &uu[1], &uu[2], &uu[3],
&uu[4], &uu[5], &uu[6], &uu[7],
&uu[8], &uu[9], &uu[10], &uu[11],
&uu[12], &uu[13], &uu[14], &uu[15], &n);
/* ignore message from myself */
if (!memcmp(uu, ss->uuid, 16))
dbgprintf(DEBUG_SSDP, "that's me!\n");
continue;
}
}
ss->csport = sport;
dbgprintf(DEBUG_SSDP, "host=%s, hport=%u, type=%d, htype=%d mx=%d\n", host, hport, type, htype, mx);
/* M-SEARCH */
if (ss->setup) {
if (type == 1 && mx > 0) {
ssdp_msearch(ss, 0, st);
}
/* NOTIFY */
if (type == 2 && devid == ss->devid && memcmp(uu, ss->uuid, 16)) {
ssdp_defend(ss);
}
} else {
if (type == 1 && htype == 2 && ss->devid == devid) {
send_reply_msearch(ss, 0, 1, 2);
ss->devid++;
write_id("device", ss->devid);
dbgprintf(DEBUG_SSDP, "new device id %d \n", ss->devid);
ssdp_reset_setup(ss);
}
}
}
#define SSDP_MCAST "239.255.255.250"
#define SSDP_MCAST_LL "FF02::C"
#define SSDP_MCAST_SL "FF05::C"
static int ssdp_mc_add(int s, const char *ifname, int add, int v6)
{
if (v6) {
struct ipv6_mreq imr;
unsigned int ifindex = if_nametoindex(ifname);
memset(&imr, 0, sizeof(imr));
inet_pton(AF_INET6, SSDP_MCAST_LL, &imr.ipv6mr_multiaddr);
imr.ipv6mr_interface = ifindex;
if (setsockopt(s, IPPROTO_IPV6, add ? IPV6_JOIN_GROUP : IPV6_LEAVE_GROUP,
&imr, sizeof(imr)) < 0)
return -1;
inet_pton(AF_INET6, SSDP_MCAST_SL, &imr.ipv6mr_multiaddr);
if (setsockopt(s, IPPROTO_IPV6, add ? IPV6_JOIN_GROUP : IPV6_LEAVE_GROUP,
&imr, sizeof(imr)) < 0)
return -1;
} else {
struct ip_mreq imr;
struct sockaddr_in sadr;
unsigned char ttl = 2, one = 1, zero = 0;
get_ifa(ifname, AF_INET, (struct sockaddr *) &sadr);
imr.imr_multiaddr.s_addr = inet_addr(SSDP_MCAST);
imr.imr_interface.s_addr = sadr.sin_addr.s_addr;
if (setsockopt(s, IPPROTO_IP, add ? IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP,
&imr, sizeof(imr)) < 0)
return -1;
setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl));
//setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero));
}
printf("mc_add OK\n");
return 0;
}
static int ssdpsock(const char *ifnam, int family, struct sockaddr *sadr)
{
int one=1, sock;
struct addrinfo *ais, *ai, hints = {
.ai_flags = AI_PASSIVE,
.ai_family = family,
.ai_socktype = SOCK_DGRAM,
.ai_protocol = 0,
.ai_addrlen = 0,
.ai_addr = sadr,
.ai_canonname = NULL,
.ai_next = NULL,
};
if (getaddrinfo(NULL, "1900", &hints, &ais) < 0)
return -1;
for (ai = ais; ai; ai = ai->ai_next) {
sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sock == -1)
continue;
//dump(ai->ai_addr, sizeof(*ai->ai_addr));
if (!setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) &&
!bind(sock, ai->ai_addr, ai->ai_addrlen))
break;
close(sock);
}
freeaddrinfo(ais);
ssdp_mc_add(sock, ifnam, 1, family == AF_INET6 ? 1 : 0);
return sock;
}
static void add_fd(int fd, int *mfd, fd_set *fds)
{
FD_SET(fd, fds);
if (fd > *mfd)
*mfd = fd;
}
static void ssdp_loop(struct octoserve *os)
{
struct os_ssdp *ss = &os->ssdp;
int num;
int mfd;
fd_set fds;
struct timeval timeout;
char buf[1501];
ss->http_sock = streamsock("8888", AF_INET, &ss->http_sadr);
if (listen(ss->http_sock, 10) < 0) {
printf("listen error");
return;
}
ssdp_reset_setup(ss);
while (!os->exit) {
ssdp_announce(os, 1, 1);
timeout.tv_sec = 1;
timeout.tv_usec = 0;
FD_ZERO(&fds);
mfd = 0;
add_fd(ss->sock, &mfd, &fds);
//add_fd(ss->sock6, &mfd, &fds);
add_fd(ss->http_sock, &mfd, &fds);
num = select(mfd + 1, &fds, NULL, NULL, &timeout);
if (num < 0)
break;
if (FD_ISSET(ss->sock, &fds)) {
socklen_t len;
int n;
len = sizeof(ss->cadr);
n = recvfrom(ss->sock, buf, sizeof(buf) - 1, 0, &ss->cadr, &len);
ss->v6 = 0;
if (n > 0)
handle_ssdp(os, buf, n);
}
if (FD_ISSET(ss->http_sock, &fds)) {
socklen_t len;
pthread_t pt;
//ss->csock = accept4(ss->http_sock, &ss->cadr, &len, SOCK_NONBLOCK);
ss->csock = accept(ss->http_sock, &ss->cadr, &len);
handle_http(ss);
}
}
ssdp_announce(os, 0, 1);
}
static void ssdp_search(int s)
{
struct sockaddr_in insadr;
char ms[] = "M-SEARCH * HTTP/1.1\r\nHOST: 239.255.255.250:1900\r\n"
"MAN: \"ssdp:discover\"\r\nMX: 5\r\nST: ssdp:all\r\n\r\n";
memset(&insadr, 0, sizeof(insadr));
insadr.sin_family = AF_INET;
insadr.sin_port = htons(1900);
insadr.sin_addr.s_addr = inet_addr("239.255.255.250");
sendto(s, &ms[0], sizeof(ms) - 1, 0,
(struct sockaddr *) &insadr, sizeof(insadr));
}
void ssdp_thread(struct octoserve *os)
{
//ssdp_search(s);
ssdp_loop(os);
}
static uint64_t get_us(void)
{
struct timeval tv;
gettimeofday(&tv, 0);
return ((uint64_t) tv.tv_sec * 1000000ULL + (uint64_t) tv.tv_usec);
}
static void create_uuid(uint8_t *u, uint8_t *mac)
{
uint8_t uu[10] = { 0xdd, 0x84, 0x8d, 0x00, 0x26,
0xec, 0x11, 0xeb, 0x80, 0x00 };
memcpy(u, uu, 10);
memcpy(u + 10, mac, 6);
}
static void create_uuid_old(uint8_t *u, uint8_t *mac)
{
uint64_t us, ns;
int i;
memcpy(u + 10, mac, 6);
us = get_us();
ns = us * 1000ULL + 122192928000000000ULL;
u[0] = ns >> 24;
u[1] = ns >> 16;
u[2] = ns >> 8;
u[3] = ns;
u[4] = ns >> 40;
u[5] = ns >> 32;
u[6] = ns >> 56;
u[7] = ns >> 48;
u[8] = 0;
u[9] = 0;
u[6] = (u[6] & 0x0f) | 0x10;
u[8] = (u[8] & 0x3f) | 0x80;
}
static int add_dev(struct os_ssdp *ss, char *nt, char *loc, char *uuid, char *server)
{
int n = ss->dev_num;
if (n == UPNP_DEV_MAX)
return -1;
ss->dev[n].nt = nt;
ss->dev[n].loc = loc;
ss->dev[n].uuid = uuid;
ss->dev[n].server = server;
ss->dev_num++;
}
int init_ssdp(struct octoserve *os, struct os_ssdp *ss, uint32_t d, int nossdp, int nodms)
{
time_t t;
uint8_t *u, mac[6];
struct ifreq ifr;
uint32_t id;
int stat;
char *dms = "Linux/3.17.7 DLNADOC/1.50 UPnP/1.0 OctopusNet-DMS/1.0";
debug = d;
ss->os = os;
ss->server = "Linux/3.17.7 UPnP/1.1 OctopusNet/" OCTOSERVE_VERSION;
stat = read_id("device", &id);
if (stat < 0) {
ss->devid = 5;
write_id("device", ss->devid);
} else
ss->devid = id;
stat = read_id("boot", &id);
if (stat < 0)
ss->bootid = 0;
else
ss->bootid = id + 1;
write_id("boot", ss->bootid);
ss->configid = 1;
get_ifa(os->ifname, AF_INET, &os->ssdp.sadr);
get_ifa(os->ifname, AF_INET6, &os->ssdp.sadr6);
sockname(&os->ssdp.sadr, os->ssdp.ip);
sockname(&os->ssdp.sadr6, os->ssdp.ip6);
if (!nossdp) {
ss->sock = ssdpsock(os->ifname, AF_INET, &os->ssdp.sadr);
if (ss->sock < 0)
return -1;
ss->sock6 = ssdpsock(os->ifname, AF_INET6, &os->ssdp.sadr);
if (ss->sock6 < 0)
return -1;
strcpy(ifr.ifr_name, os->ifname);
ioctl(ss->sock, SIOCGIFHWADDR, &ifr);
memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
create_uuid(ss->uuid, mac);
u = ss->uuid;
snprintf(ss->uuid_str, 42,
"uuid:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7],
u[8], u[9], u[10], u[11], u[12], u[13], u[14], u[15]);
snprintf(ss->uuid_str2, 42,
"uuid:f0287290-e1e1-11e2-9a21-%02x%02x%02x%02x%02x%02x",
u[10], u[11], u[12], u[13], u[14], u[15]);
add_dev(ss, "upnp:rootdevice", "/octoserve/octonet.xml", ss->uuid_str, ss->server);
add_dev(ss, "", "/octoserve/octonet.xml", ss->uuid_str, ss->server);
add_dev(ss, "urn:ses-com:device:SatIPServer:1", "/octoserve/octonet.xml",
ss->uuid_str, ss->server);
if (!nodms) {
add_dev(ss, "upnp:rootdevice", ":8080/dms.xml", ss->uuid_str2, dms);
add_dev(ss, "", ":8080/dms.xml", ss->uuid_str2, dms);
add_dev(ss, "urn:schemas-upnp-org:device:MediaServer:1", ":8080/dms.xml",
ss->uuid_str2, dms);
add_dev(ss, "urn:schemas-upnp-org:service:ConnectionManager:1",
":8080/dms.xml", ss->uuid_str2, dms);
add_dev(ss, "urn:schemas-upnp-org:service:ContentDirectory:1",
":8080/dms.xml", ss->uuid_str2, dms);
add_dev(ss, "urn:microsoft.com:service:X_MS_MediaReceiverRegistrar:1",
":8080/dms.xml", ss->uuid_str2, dms);
}
pthread_create(&os->ssdp.pt, NULL, (void *) ssdp_thread, os);
}
return 0;
}
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