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miniupnpd/minissdp.c: Add documentation to SSDPNotify* functions

This commit is contained in:
Thomas Bernard 2014-10-22 12:11:34 +02:00
parent aef2c0a3b4
commit 447bad32c9
1 changed files with 20 additions and 22 deletions
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42
miniupnpd/minissdp.c
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@ -507,6 +507,8 @@ static struct {
{0, 0, 0}
};
/* SendSSDPNotify() sends the SSDP NOTIFY to a specific
* destination, for a specific UPnP service or device */
static void
SendSSDPNotify(int s, const struct sockaddr * dest, socklen_t dest_len,
const char * dest_str,
@ -549,25 +551,19 @@ SendSSDPNotify(int s, const struct sockaddr * dest, socklen_t dest_len,
upnp_bootid, /* 01-NLS: */
upnp_bootid, /* BOOTID.UPNP.ORG: */
upnp_configid ); /* CONFIGID.UPNP.ORG: */
if(l<0)
{
if(l<0) {
syslog(LOG_ERR, "%s: snprintf error", "SendSSDPNotify()");
return;
}
else if((unsigned int)l >= sizeof(bufr))
{
} else if((unsigned int)l >= sizeof(bufr)) {
syslog(LOG_WARNING, "%s: truncated output (%u>=%u)",
"SendSSDPNotify()", (unsigned)l, (unsigned)sizeof(bufr));
l = sizeof(bufr) - 1;
}
n = sendto_or_schedule(s, bufr, l, 0, dest, dest_len);
if(n < 0)
{
if(n < 0) {
syslog(LOG_ERR, "sendto(udp_notify=%d, %s): %m", s,
host ? host : "NULL");
}
else if(n != l)
{
} else if(n != l) {
syslog(LOG_NOTICE, "sendto() sent %d out of %d bytes", n, l);
}
/* Due to the unreliable nature of UDP, devices SHOULD send the entire
@ -575,13 +571,14 @@ SendSSDPNotify(int s, const struct sockaddr * dest, socklen_t dest_len,
* sets e.g. a few hundred milliseconds. To avoid network congestion
* discovery messages SHOULD NOT be sent more than three times. */
n = sendto_schedule(s, bufr, l, 0, dest, dest_len, 250);
if(n < 0)
{
if(n < 0) {
syslog(LOG_ERR, "sendto(udp_notify=%d, %s): %m", s,
host ? host : "NULL");
}
}
/* SendSSDPNotifies() send SSPD NOTIFY for a specific
* LAN (network interface) for all devices / services */
#ifdef ENABLE_HTTPS
static void
SendSSDPNotifies(int s, const char * host, unsigned short http_port,
@ -596,9 +593,9 @@ SendSSDPNotifies(int s, const char * host, unsigned short http_port,
#ifdef ENABLE_IPV6
struct sockaddr_storage sockname;
static const struct { const char * p1, * p2; } const mcast_addrs[] =
{ { LL_SSDP_MCAST_ADDR, "[" LL_SSDP_MCAST_ADDR "]" },
{ SL_SSDP_MCAST_ADDR, "[" SL_SSDP_MCAST_ADDR "]" },
{ GL_SSDP_MCAST_ADDR, "[" GL_SSDP_MCAST_ADDR "]" },
{ { LL_SSDP_MCAST_ADDR, "[" LL_SSDP_MCAST_ADDR "]" }, /* Link Local */
{ SL_SSDP_MCAST_ADDR, "[" SL_SSDP_MCAST_ADDR "]" }, /* Site Local */
{ GL_SSDP_MCAST_ADDR, "[" GL_SSDP_MCAST_ADDR "]" }, /* Global */
{ NULL, NULL } };
int j;
#else
@ -610,10 +607,11 @@ SendSSDPNotifies(int s, const char * host, unsigned short http_port,
char ver_str[4];
#ifndef ENABLE_IPV6
UNUSED(ipv6);
#endif
#endif /* ENABLE_IPV6 */
memset(&sockname, 0, sizeof(sockname));
#ifdef ENABLE_IPV6
/* first iterate destinations for this LAN interface (only 1 for IPv4) */
for(j = 0; (mcast_addrs[j].p1 != 0 && ipv6) || j < 1; j++) {
if(ipv6) {
struct sockaddr_in6 * p = (struct sockaddr_in6 *)&sockname;
@ -676,6 +674,8 @@ SendSSDPNotifies(int s, const char * host, unsigned short http_port,
#endif /* ENABLE_IPV6 */
}
/* SendSSDPNotifies2() sends SSDP NOTIFY packets on all interfaces
* for all destinations, all devices / services */
void
SendSSDPNotifies2(int * sockets,
unsigned short http_port,
@ -686,10 +686,9 @@ SendSSDPNotifies2(int * sockets,
{
int i;
struct lan_addr_s * lan_addr;
for(i=0, lan_addr = lan_addrs.lh_first;
for(i = 0, lan_addr = lan_addrs.lh_first;
lan_addr != NULL;
lan_addr = lan_addr->list.le_next)
{
lan_addr = lan_addr->list.le_next) {
SendSSDPNotifies(sockets[i], lan_addr->str, http_port,
#ifdef ENABLE_HTTPS
https_port,
@ -697,8 +696,7 @@ SendSSDPNotifies2(int * sockets,
lifetime, 0);
i++;
#ifdef ENABLE_IPV6
if(sockets[i] >= 0)
{
if(sockets[i] >= 0) {
SendSSDPNotifies(sockets[i], ipv6_addr_for_http_with_brackets, http_port,
#ifdef ENABLE_HTTPS
https_port,
@ -706,7 +704,7 @@ SendSSDPNotifies2(int * sockets,
lifetime, 1);
}
i++;
#endif
#endif /* ENABLE_IPV6 */
}
}