+ LOG(4, 0, 0, " Received DAE NAS-Port: %u\n", port);
+ break;
+
+ case 6: /* service type */
+ {
+ uint32_t service_type = ntohl(*(uint32_t *) packet);
+ auth_only = service_type == 8; // Authenticate only
+
+ LOG(4, 0, 0, " Received DAE Service-Type: %u\n", service_type);
+ }
+ break;
+
+ case 8: /* ip address */
+ ip = *(uint32_t *) packet; // net order
+ LOG(4, 0, 0, " Received DAE Framed-IP-Address: %s\n", fmtaddr(ip, 0));
+ break;
+
+ case 11: /* filter id */
+ LOG(4, 0, 0, " Received DAE Filter-Id: %.*s\n", attribute_length, packet);
+ if (!(p = memchr(packet, '.', attribute_length)))
+ {
+ error = 404; // invalid request
+ break;
+ }
+
+ len = p - packet;
+ i = find_filter((char *) packet, len);
+ if (i < 0 || !*ip_filters[i].name)
+ {
+ error = 404;
+ break;
+ }
+
+ if (!memcmp(p, ".in", attribute_length - len))
+ fin = i + 1;
+ else if (!memcmp(p, ".out", attribute_length - len))
+ fout = i + 1;
+ else
+ error = 404;
+
+ break;
+
+ case 26: /* vendor specific */
+ if (attribute_length >= 6
+ && ntohl(*(uint32_t *) packet) == 9 // Cisco
+ && *(packet + 4) == 1 // Cisco-AVPair
+ && *(packet + 5) >= 2) // length
+ {
+ int len = *(packet + 5) - 2;
+ uint8_t *a = packet + 6;
+
+ LOG(4, 0, 0, " Received DAE Cisco-AVPair: %.*s\n", len, a);
+ if (avp < sizeof(avpair)/sizeof(*avpair) - 1)
+ {
+ avpair[avp] = a;
+ avpair_len[avp++] = len;
+ }
+ }
+ break;
+ }
+
+ packet += attribute_length;
+ }
+
+ if (!error && auth_only)
+ {
+ if (fin != -1 || fout != -1 || avp)
+ error = 401; // unsupported attribute
+ else
+ error = 405; // unsupported service
+ }
+
+ if (!error && !(port || ip || *username))
+ error = 402; // missing attribute
+
+ // exact match for SID if given
+ if (!error && port)
+ {
+ s = port;
+ if (!session[s].opened)
+ error = 503; // not found
+ }
+
+ if (!error && ip)
+ {
+ // find/check session by IP
+ i = sessionbyip(ip);
+ if (!i || (s && s != i)) // not found or mismatching port
+ error = 503;
+ else
+ s = i;
+ }
+
+ if (!error && *username)