RADIUS load test

[l2tpns.git] / ppp.c

diff --git a/ppp.c b/ppp.c
index 6888328..3408d86 100644 (file)
--- a/ppp.c
+++ b/ppp.c
@@ -1,6 +1,6 @@
 // L2TPNS PPP Stuff
 
-char const *cvs_id_ppp = "$Id: ppp.c,v 1.56 2005-05-10 09:47:23 bodea Exp $";
+char const *cvs_id_ppp = "$Id: ppp.c,v 1.61 2005-05-13 09:23:00 bodea Exp $";
 
 #include <stdio.h>
 #include <string.h>
@@ -150,7 +150,6 @@ void processchap(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l)
        {
                LOG(1, s, t, "Unexpected CHAP message\n");
                STAT(tunnel_rx_errors);
-               sessionshutdown(s, "Unexpected CHAP message.", 3, 0);
                return;
        }
 
@@ -355,7 +354,33 @@ void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l)
 
        if (*p == ConfigAck)
        {
-               LOG(3, s, t, "LCP: Discarding ConfigAck\n");
+               int x = l - 4;
+               uint8_t *o = (p + 4);
+
+               LOG(3, s, t, "LCP: ConfigAck (%d bytes)...\n", l);
+               if (config->debug > 3) dumplcp(p, l);
+
+               while (x > 2)
+               {
+                       int type = o[0];
+                       int length = o[1];
+
+                       if (length == 0 || type == 0 || x < length) break;
+                       switch (type)
+                       {
+                               case 3: // Authentication-Protocol
+                                       {
+                                               int proto = ntohs(*(uint16_t *)(o + 2));
+                                               if (proto == PPPCHAP && *(o + 4) == 5)
+                                                       sendchap(t, s);
+                                       }
+
+                                       break;
+                       }
+                       x -= length;
+                       o += length;
+               }
+
                session[s].flags |= SF_LCP_ACKED;
        }
        else if (*p == ConfigReq)
@@ -524,7 +549,7 @@ void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l)
        {
                int x = l - 4;
                uint8_t *o = (p + 4);
-               int authtype = 0;
+               int authtype = -1;
 
                LOG(3, s, t, "LCP: ConfigNak (%d bytes)...\n", l);
                if (config->debug > 3) dumplcp(p, l);
@@ -543,7 +568,7 @@ void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l)
                                        break;
 
                                case 3: // Authentication-Protocol
-                                       if (authtype)
+                                       if (authtype > 0)
                                                break;
 
                                        {
@@ -567,21 +592,23 @@ void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l)
                                                }
                                        }
 
-                                       if (!authtype)
-                                       {
-                                               sessionshutdown(s, "Unsupported authentication.", 3, 0);
-                                               return;
-                                       }
-
                                        break;
 
                                default:
                                        LOG(2, s, t, "    Remote NAKed LCP type %u?\n", type);
                                        break;
                        }
+                       x -= length;
+                       o += length;
                }
 
                if (!authtype)
+               {
+                       sessionshutdown(s, "Unsupported authentication.", 3, 0);
+                       return;
+               }
+
+               if (authtype == -1)
                        authtype = config->radius_authprefer;
 
                sendlcp(t, s, authtype);
@@ -1301,7 +1328,7 @@ void sendlcp(tunnelidt t, sessionidt s, int authtype)
                return;
 
        LOG(4, s, t, "Sending LCP ConfigReq for %s\n",
-           config->radius_authprefer == AUTHCHAP ? "CHAP" : "PAP");
+           authtype == AUTHCHAP ? "CHAP" : "PAP");
 
        if (!session[s].mru)
                session[s].mru = DEFAULT_MRU;