LWS_VISIBLE int
libwebsockets_get_addresses(struct libwebsocket_context *context,
void *ads, char *name, int name_len,
char *rip, int rip_len)
{
struct addrinfo ai, *res;
struct sockaddr_in addr4;
rip[0] = '\0';
name[0] = '\0';
addr4.sin_family = AF_UNSPEC;
#ifdef LWS_USE_IPV6
if (LWS_IPV6_ENABLED(context)) {
if (!lws_plat_inet_ntop(AF_INET6, &((struct sockaddr_in6 *)ads)->sin6_addr, rip, rip_len)) {
lwsl_err("inet_ntop", strerror(LWS_ERRNO));
return -1;
}
// Strip off the IPv4 to IPv6 header if one exists
if (strncmp(rip, "::ffff:", 7) == 0)
memmove(rip, rip + 7, strlen(rip) - 6);
getnameinfo((struct sockaddr *)ads,
sizeof(struct sockaddr_in6), name,
name_len, NULL, 0, 0);
return 0;
} else
#endif
{
struct addrinfo *result;
memset(&ai, 0, sizeof ai);
ai.ai_family = PF_UNSPEC;
ai.ai_socktype = SOCK_STREAM;
ai.ai_flags = AI_CANONNAME;
if (getnameinfo((struct sockaddr *)ads,
sizeof(struct sockaddr_in),
name, name_len, NULL, 0, 0))
return -1;
if (!rip)
return 0;
if (getaddrinfo(name, NULL, &ai, &result))
return -1;
res = result;
while (addr4.sin_family == AF_UNSPEC && res) {
switch (res->ai_family) {
case AF_INET:
addr4.sin_addr = ((struct sockaddr_in *)res->ai_addr)->sin_addr;
addr4.sin_family = AF_INET;
break;
}
res = res->ai_next;
}
freeaddrinfo(result);
}
if (addr4.sin_family == AF_UNSPEC)
return -1;
lws_plat_inet_ntop(AF_INET, &addr4.sin_addr, rip, rip_len);
return 0;
}
LWS_VISIBLE void
libwebsockets_get_peer_addresses(struct libwebsocket_context *context,
struct libwebsocket *wsi, int fd, char *name, int name_len,
char *rip, int rip_len)
{
socklen_t len;
#ifdef LWS_USE_IPV6
struct sockaddr_in6 sin6;
#endif
struct sockaddr_in sin4;
struct hostent *host;
struct hostent *host1;
char ip[128];
unsigned char *p;
int n;
#ifdef AF_LOCAL
struct sockaddr_un *un;
#endif
int ret = -1;
rip[0] = '\0';
name[0] = '\0';
lws_latency_pre(context, wsi);
#ifdef LWS_USE_IPV6
if (LWS_IPV6_ENABLED(context)) {
len = sizeof(sin6);
if (getpeername(fd, (struct sockaddr *) &sin6, &len) < 0) {
lwsl_warn("getpeername: %s\n", strerror(LWS_ERRNO));
goto bail;
}
if (!lws_plat_inet_ntop(AF_INET6, &sin6.sin6_addr, rip, rip_len)) {
lwsl_err("inet_ntop", strerror(LWS_ERRNO));
goto bail;
}
// Strip off the IPv4 to IPv6 header if one exists
if (strncmp(rip, "::ffff:", 7) == 0)
memmove(rip, rip + 7, strlen(rip) - 6);
getnameinfo((struct sockaddr *)&sin6,
sizeof(struct sockaddr_in6), name,
name_len, NULL, 0, 0);
} else
#endif
{
len = sizeof(sin4);
if (getpeername(fd, (struct sockaddr *) &sin4, &len) < 0) {
lwsl_warn("getpeername: %s\n", strerror(LWS_ERRNO));
goto bail;
}
host = gethostbyaddr((char *) &sin4.sin_addr,
sizeof(sin4.sin_addr), AF_INET);
if (host == NULL) {
lwsl_warn("gethostbyaddr: %s\n", strerror(LWS_ERRNO));
goto bail;
}
strncpy(name, host->h_name, name_len);
name[name_len - 1] = '\0';
host1 = gethostbyname(host->h_name);
if (host1 == NULL)
goto bail;
p = (unsigned char *)host1;
n = 0;
while (p != NULL) {
p = (unsigned char *)host1->h_addr_list[n++];
if (p == NULL)
continue;
if ((host1->h_addrtype != AF_INET)
#ifdef AF_LOCAL
&& (host1->h_addrtype != AF_LOCAL)
#endif
)
continue;
if (host1->h_addrtype == AF_INET)
sprintf(ip, "%u.%u.%u.%u",
p[0], p[1], p[2], p[3]);
#ifdef AF_LOCAL
else {
un = (struct sockaddr_un *)p;
strncpy(ip, un->sun_path, sizeof(ip) - 1);
ip[sizeof(ip) - 1] = '\0';
}
#endif
p = NULL;
strncpy(rip, ip, rip_len);
rip[rip_len - 1] = '\0';
}
}
ret = 0;
bail:
lws_latency(context, wsi, "libwebsockets_get_peer_addresses", ret, 1);
}
