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Add renegotiation patch from Yuri (ppp-aug10-patch)

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Indentation and style cleanups
Make md5.c use standard memcpy and memset
This commit is contained in:
fred_nerk 2004-08-13 00:02:50 +00:00
parent 4b16fcbdfd
commit 43d0275f6d
7 changed files with 2628 additions and 2666 deletions
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66
ppp.c
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@ -1,6 +1,6 @@
// L2TPNS PPP Stuff
char const *cvs_id_ppp = "$Id: ppp.c,v 1.11 2004/08/02 06:06:28 fred_nerk Exp $";
char const *cvs_id_ppp = "$Id: ppp.c,v 1.12 2004/08/13 00:02:50 fred_nerk Exp $";
#include <stdio.h>
#include <string.h>
@ -76,26 +76,27 @@ void processpap(tunnelidt t, sessionidt s, u8 * p, u16 l)
return;
}
if (session[s].ip)
*p = 2; // ACK
*p = 2; // ACK
else
*p = 3; // cant authorise
*p = 3; // cant authorise
p[1] = id;
*(u16 *) (p + 2) = htons(5); // length
p[4] = 0; // no message
*(u16 *) (p + 2) = htons(5); // length
p[4] = 0; // no message
if (session[s].ip)
{
log(3, session[s].ip, s, t, "%d Already an IP allocated: %s (%d)\n", getpid(), inet_toa(htonl(session[s].ip)), session[s].ip_pool_index);
log(3, session[s].ip, s, t, "%d Already an IP allocated: %s (%d)\n", getpid(), inet_toa(htonl(session[s].ip)), session[s].ip_pool_index);
session[s].flags &= ~SF_IPCP_ACKED;
}
else
{
log(1, 0, s, t, "No radius session available to authenticate session...\n");
log(1, 0, s, t, "No radius session available to authenticate session...\n");
}
log(3, 0, s, t, "Fallback response to PAP (%s)\n", (session[s].ip) ? "ACK" : "NAK");
tunnelsend(b, 5 + (p - b), t); // send it
}
else
{ // set up RADIUS request
{
// set up RADIUS request
u16 r = session[s].radius;
// Run PRE_AUTH plugins
@ -410,15 +411,16 @@ void processlcp(tunnelidt t, sessionidt s, u8 * p, u16 l)
{
// Send back a ConfigAck
log(3, session[s].ip, s, t, "ConfigReq accepted, sending as Ack\n");
// for win2k L2TP clientis and LCP renegotiation of alive session
if (magicno || l == 4) initlcp(t, s);
q = makeppp(b, sizeof(b), p, l, t, s, PPPLCP);
if (!q) {
if (!q)
{
log(3, session[s].ip, s, t, " failed to create packet.\n");
return;
}
*q = ConfigAck;
tunnelsend(b, l + (q - b), t);
// For win2k L2TP clients, LCP should be initiated by the LNS
if (magicno) initlcp(t, s);
}
else
{
@ -438,7 +440,7 @@ void processlcp(tunnelidt t, sessionidt s, u8 * p, u16 l)
}
else if (*p == TerminateReq)
{
*p = TerminateAck; // close
*p = TerminateAck; // close
q = makeppp(b, sizeof(b), p, l, t, s, PPPLCP);
if (!q) {
log(3, session[s].ip, s, t, "Failed to create PPP packet in processlcp.\n");
@ -454,7 +456,7 @@ void processlcp(tunnelidt t, sessionidt s, u8 * p, u16 l)
}
else if (*p == EchoReq)
{
*p = EchoReply; // reply
*p = EchoReply; // reply
*(u32 *) (p + 4) = htonl(session[s].magic); // our magic number
q = makeppp(b, sizeof(b), p, l, t, s, PPPLCP);
if (!q) {
@ -537,7 +539,7 @@ void processipcp(tunnelidt t, sessionidt s, u8 * p, u16 l)
if (!session[s].ip)
{
log(3, 0, s, t, "Waiting on radius reply\n");
return ; // have to wait on RADIUS reply
return; // have to wait on RADIUS reply
}
// form a config reply quoting the IP in the session
{
@ -602,7 +604,7 @@ void processipcp(tunnelidt t, sessionidt s, u8 * p, u16 l)
log(5, session[s].ip, s, t, " DNS2 = %s\n", inet_toa(session[s].dns1));
}
}
i = findppp(p, 3); // IP address
i = findppp(p, 3); // IP address
if (!i || i[1] != 6)
{
log(1, 0, s, t, "No IP in IPCP request\n");
@ -744,12 +746,12 @@ void processccp(tunnelidt t, sessionidt s, u8 * p, u16 l)
}
else
{
*p = ConfigRej; // reject
*p = ConfigRej; // reject
sendccp(t, s);
}
}
else
*p = TerminateAck; // close
*p = TerminateAck; // close
if (!(q = makeppp(b, sizeof(b), p, l, t, s, PPPCCP)))
{
log(1,0,0,0, "Failed to send CCP packet.\n");
@ -775,12 +777,13 @@ void sendchap(tunnelidt t, sessionidt s)
return ;
}
log(1, 0, s, t, "Send CHAP challenge\n");
{ // new challenge
{
// new challenge
int n;
for (n = 0; n < 15; n++)
radius[r].auth[n] = rand();
}
radius[r].chap = 1; // CHAP not PAP
radius[r].chap = 1; // CHAP not PAP
radius[r].id++;
if (radius[r].state != RADIUSCHAP)
radius[r].try = 0;
@ -797,11 +800,11 @@ void sendchap(tunnelidt t, sessionidt s)
log(1, 0, s, t, "failed to send CHAP challenge.\n");
return;
}
*q = 1; // challenhe
q[1] = radius[r].id; // ID
q[4] = 16; // length
memcpy(q + 5, radius[r].auth, 16); // challenge
strcpy(q + 21, hostname); // our name
*q = 1; // challenge
q[1] = radius[r].id; // ID
q[4] = 16; // length
memcpy(q + 5, radius[r].auth, 16); // challenge
strcpy(q + 21, hostname); // our name
*(u16 *) (q + 2) = htons(strlen(hostname) + 21); // length
tunnelsend(b, strlen(hostname) + 21 + (q - b), t); // send it
}
@ -852,7 +855,7 @@ u8 *findppp(u8 * b, u8 mtype)
while (l)
{
if (l < b[1] || !b[1])
return 0; // faulty
return 0; // faulty
if (*b == mtype)
return b;
l -= b[1];
@ -874,11 +877,14 @@ void initlcp(tunnelidt t, sessionidt s)
log(4, 0, s, t, "Sending LCP ConfigReq for PAP\n");
*q = ConfigReq;
*(u8 *)(q + 1) = (time_now % 255) + 1; // ID
*(u16 *)(q + 2) = htons(8); // Length
*(u8 *)(q + 4) = 3;
*(u8 *)(q + 5) = 4;
*(u16 *)(q + 6) = htons(0xC023); // PAP
tunnelsend(b, 12 + 8, t);
*(u16 *)(q + 2) = htons(14); // Length
*(u8 *)(q + 4) = 5;
*(u8 *)(q + 5) = 6;
*(u32 *)(q + 6) = htonl(session[s].magic);
*(u8 *)(q + 10) = 3;
*(u8 *)(q + 11) = 4;
*(u16 *)(q + 12) = htons(0xC023); // PAP
tunnelsend(b, 12 + 14, t);
}
// Send CCP reply