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copy identifier from request for ConfigNak, ConfigRej; update LCP
author
bodea
<bodea>
Tue, 30 Nov 2004 00:50:03 +0000
(
00:50
+0000)
committer
bodea
<bodea>
Tue, 30 Nov 2004 00:50:03 +0000
(
00:50
+0000)
header length
ppp.c
patch
|
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history
diff --git
a/ppp.c
b/ppp.c
index
2baad57
..
a582cc9
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 1.3
3 2004/11/29 02:17:18
bodea Exp $";
+char const *cvs_id_ppp = "$Id: ppp.c,v 1.3
4 2004/11/30 00:50:03
bodea Exp $";
#include <stdio.h>
#include <string.h>
#include <stdio.h>
#include <string.h>
@@
-358,7
+358,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
{
int x = l - 4;
u8 *o = (p + 4);
{
int x = l - 4;
u8 *o = (p + 4);
- u8 response = 0;
+ u8
*
response = 0;
LOG(3, s, t, "LCP: ConfigReq (%d bytes)...\n", l);
if (config->debug > 3) dumplcp(p, l);
LOG(3, s, t, "LCP: ConfigReq (%d bytes)...\n", l);
if (config->debug > 3) dumplcp(p, l);
@@
-367,6
+367,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
{
int type = o[0];
int length = o[1];
{
int type = o[0];
int length = o[1];
+
if (length == 0 || type == 0 || x < length) break;
switch (type)
{
if (length == 0 || type == 0 || x < length) break;
switch (type)
{
@@
-378,15
+379,16
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
if (!ntohl(*(u32 *)(o + 2))) // all bits zero is OK
break;
if (!ntohl(*(u32 *)(o + 2))) // all bits zero is OK
break;
- if (response && response != ConfigNak) // rej already queued
+ if (response &&
*
response != ConfigNak) // rej already queued
break;
LOG(2, s, t, " Remote requesting asyncmap. Rejecting.\n");
if (!response)
{
break;
LOG(2, s, t, " Remote requesting asyncmap. Rejecting.\n");
if (!response)
{
- q =
makeppp(b, sizeof(b), NULL, 0
, t, s, PPPLCP);
+ q =
response = makeppp(b, sizeof(b), p, 2
, t, s, PPPLCP);
if (!q) break;
if (!q) break;
- response = *q++ = ConfigNak;
+ *q = ConfigNak;
+ q += 4;
}
if ((q - b + 11) > sizeof(b))
}
if ((q - b + 11) > sizeof(b))
@@
-399,6
+401,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
*q++ = 6;
memset(q, 0, 4); // asyncmap 0
q += 4;
*q++ = 6;
memset(q, 0, 4); // asyncmap 0
q += 4;
+ *((u16 *) (response + 2)) = q - response; // LCP header length
break;
case 3: // Authentication-Protocol
break;
case 3: // Authentication-Protocol
@@
-408,7
+411,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
if (proto == PPPPAP)
break;
if (proto == PPPPAP)
break;
- if (response && response != ConfigNak) // rej already queued
+ if (response &&
*
response != ConfigNak) // rej already queued
break;
if (proto == PPPCHAP)
break;
if (proto == PPPCHAP)
@@
-420,9
+423,10
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
if (!response)
{
if (!response)
{
- q =
makeppp(b, sizeof(b), NULL, 0
, t, s, PPPLCP);
+ q =
response = makeppp(b, sizeof(b), p, 2
, t, s, PPPLCP);
if (!q) break;
if (!q) break;
- response = *q++ = ConfigNak;
+ *q = ConfigNak;
+ q += 4;
}
if ((q - b + length) > sizeof(b))
}
if ((q - b + length) > sizeof(b))
@@
-434,6
+438,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
memcpy(q, o, length);
*(u16 *)(q += 2) = htons(PPPPAP); // NAK -> Use PAP instead
q += length;
memcpy(q, o, length);
*(u16 *)(q += 2) = htons(PPPPAP); // NAK -> Use PAP instead
q += length;
+ *((u16 *) (response + 2)) = q - response;
}
break;
}
break;
@@
-448,11
+453,12
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
default: // Reject any unknown options
LOG(2, s, t, " Rejecting PPP LCP Option type %d\n", type);
default: // Reject any unknown options
LOG(2, s, t, " Rejecting PPP LCP Option type %d\n", type);
- if (!response || response != ConfigRej) // drop nak in favour of rej
+ if (!response ||
*
response != ConfigRej) // drop nak in favour of rej
{
{
- q = makeppp(b, sizeof(b), NULL, 0, t, s, PPPLCP);
- if (!q) return;
- response = *q++ = ConfigRej;
+ q = response = makeppp(b, sizeof(b), p, 2, t, s, PPPLCP);
+ if (!q) break;
+ *q = ConfigRej;
+ q += 4;
}
if ((q - b + length) > sizeof(b))
}
if ((q - b + length) > sizeof(b))
@@
-463,6
+469,7
@@
void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
memcpy(q, o, length);
q += length;
memcpy(q, o, length);
q += length;
+ *((u16 *) (response + 2)) = q - response; // LCP header length
}
x -= length;
o += length;
}
x -= length;
o += length;