update filter refcounts

[l2tpns.git] / ppp.c

diff --git a/ppp.c b/ppp.c
index 9467ef1..d44ed25 100644 (file)
--- a/ppp.c
+++ b/ppp.c
@@ -1,6 +1,6 @@
 // L2TPNS PPP Stuff
 
 // L2TPNS PPP Stuff
 

-char const *cvs_id_ppp = "$Id: ppp.c,v 1.28 2004-11-25 02:45:27 bodea Exp $";
+char const *cvs_id_ppp = "$Id: ppp.c,v 1.31 2004-11-27 05:19:53 bodea Exp $";

 
 #include <stdio.h>
 #include <string.h>
 
 #include <stdio.h>
 #include <string.h>


@@ -21,7 +21,9 @@ extern int tunfd;
 extern char hostname[];
 extern u32 eth_tx;
 extern time_t time_now;
 extern char hostname[];
 extern u32 eth_tx;
 extern time_t time_now;

-extern struct configt *config;
+extern configt *config;
+
+static void initccp(tunnelidt t, sessionidt s);

 
 // Process PAP messages
 void processpap(tunnelidt t, sessionidt s, u8 *p, u16 l)
 
 // Process PAP messages
 void processpap(tunnelidt t, sessionidt s, u8 *p, u16 l)


@@ -589,8 +591,8 @@ void processipcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
 
                LOG(3, session[s].ip, s, t, "IPCP Acked, session is now active\n");
 
 
                LOG(3, session[s].ip, s, t, "IPCP Acked, session is now active\n");
 

-               // clear  LCP_ACKED flag  for possible fast renegotiaion for routers
-               session[s].flags &= ~SF_LCP_ACKED;
+               // clear LCP_ACKED/CCP_ACKED flag for possible fast renegotiaion for routers
+               session[s].flags &= ~(SF_LCP_ACKED|SF_CCP_ACKED);

 
                return;
        }
 
                return;
        }


@@ -806,11 +808,23 @@ void processccp(tunnelidt t, sessionidt s, u8 *p, u16 l)
        LOG_HEX(5, "CCP", p, l);
        switch (l > 1 ? *p : 0)
        {
        LOG_HEX(5, "CCP", p, l);
        switch (l > 1 ? *p : 0)
        {

+       case ConfigAck:
+               session[s].flags |= SF_CCP_ACKED;
+               return;
+

        case ConfigReq:
        case ConfigReq:

-               if (l < 6)
-                       *p = ConfigAck;         // accept no compression
-               else
-                       *p = ConfigRej;         // reject
+               if (l < 6) // accept no compression
+               {
+                       *p = ConfigAck;
+                       break;
+               }
+
+               // compression requested--reject
+               *p = ConfigRej;
+
+               // send CCP request for no compression for our end if not negotiated
+               if (!(session[s].flags & SF_CCP_ACKED))
+                       initccp(t, s);

 
                break;
 
 
                break;
 


@@ -924,10 +938,10 @@ u8 *makeppp(u8 *b, int size, u8 *p, int l, tunnelidt t, sessionidt s, u16 mtype)
        return b;
 }
 
        return b;
 }
 

-// Send initial LCP ConfigReq
+// Send initial LCP ConfigReq for PAP, set magic no.

 void initlcp(tunnelidt t, sessionidt s)
 {
 void initlcp(tunnelidt t, sessionidt s)
 {

-       char b[500] = {0}, *q;
+       char b[500], *q;

 
        if (!(q = makeppp(b, sizeof(b), NULL, 0, t, s, PPPLCP)))
                return;
 
        if (!(q = makeppp(b, sizeof(b), NULL, 0, t, s, PPPLCP)))
                return;


@@ -942,5 +956,24 @@ void initlcp(tunnelidt t, sessionidt s)
        *(u8 *)(q + 10) = 3;
        *(u8 *)(q + 11) = 4;
        *(u16 *)(q + 12) = htons(PPPPAP); // PAP
        *(u8 *)(q + 10) = 3;
        *(u8 *)(q + 11) = 4;
        *(u16 *)(q + 12) = htons(PPPPAP); // PAP

-       tunnelsend(b, 12 + 14, t);
+
+       LOG_HEX(5, "PPPLCP", q, 14);
+       tunnelsend(b, (q - b) + 14, t);
+}
+
+// Send CCP request for no compression
+static void initccp(tunnelidt t, sessionidt s)
+{
+       char b[500], *q;
+
+       if (!(q = makeppp(b, sizeof(b), NULL, 0, t, s, PPPCCP)))
+               return;
+
+       LOG(4, 0, s, t, "Sending CCP ConfigReq for no compression\n");
+       *q = ConfigReq;
+       *(u8 *)(q + 1) = (time_now % 255) + 1; // ID
+       *(u16 *)(q + 2) = htons(4); // Length
+
+       LOG_HEX(5, "PPPCCP", q, 4);
+       tunnelsend(b, (q - b) + 4 , t);

 }
 }