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Add a Cisco-Avpair with intercept details to RADIUS Start/Stop records
[l2tpns.git]
/
icmp.c
diff --git
a/icmp.c
b/icmp.c
index
f7d73c6
..
c163a69
100644
(file)
--- a/
icmp.c
+++ b/
icmp.c
@@
-1,3
+1,7
@@
+// L2TPNS: icmp
+
+char const *cvs_id_icmp = "$Id: icmp.c,v 1.6 2004/12/16 08:49:53 bodea Exp $";
+
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
@@
-13,9
+17,9
@@
#include "l2tpns.h"
#include "l2tpns.h"
-
__u16
_checksum(unsigned char *addr, int count);
+
static uint16_t
_checksum(unsigned char *addr, int count);
-void host_unreachable(i
pt destination, u16 id, ip
t source, char *packet, int packet_len)
+void host_unreachable(i
n_addr_t destination, uint16_t id, in_addr_
t source, char *packet, int packet_len)
{
char buf[128] = {0};
struct iphdr *iph;
{
char buf[128] = {0};
struct iphdr *iph;
@@
-24,8
+28,9
@@
void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int pac
int len = 0, on = 1, icmp_socket;
struct sockaddr_in whereto = {0};
int len = 0, on = 1, icmp_socket;
struct sockaddr_in whereto = {0};
- if (
!(icmp_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW))
)
+ if (
(icmp_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0
)
return;
return;
+
setsockopt(icmp_socket, IPPROTO_IP, IP_HDRINCL, (char *)&on, sizeof(on));
whereto.sin_addr.s_addr = destination;
setsockopt(icmp_socket, IPPROTO_IP, IP_HDRINCL, (char *)&on, sizeof(on));
whereto.sin_addr.s_addr = destination;
@@
-55,21
+60,21
@@
void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int pac
icmp->type = ICMP_DEST_UNREACH;
icmp->code = ICMP_HOST_UNREACH;
icmp->type = ICMP_DEST_UNREACH;
icmp->code = ICMP_HOST_UNREACH;
- icmp->checksum = _checksum((char *)icmp, sizeof(struct icmphdr) + ((packet_len < 64) ? packet_len : 64));
+ icmp->checksum = _checksum((char *)
icmp, sizeof(struct icmphdr) + ((packet_len < 64) ? packet_len : 64));
- iph->check = _checksum((char *)iph, sizeof(struct iphdr));
+ iph->check = _checksum((char *)
iph, sizeof(struct iphdr));
sendto(icmp_socket, (char *)buf, len, 0, (struct sockaddr *)&whereto, sizeof(struct sockaddr));
close(icmp_socket);
}
sendto(icmp_socket, (char *)buf, len, 0, (struct sockaddr *)&whereto, sizeof(struct sockaddr));
close(icmp_socket);
}
-
__u16
_checksum(unsigned char *addr, int count)
+
static uint16_t
_checksum(unsigned char *addr, int count)
{
register long sum = 0;
for (; count > 1; count -= 2)
{
{
register long sum = 0;
for (; count > 1; count -= 2)
{
- sum += ntohs(*(u
32 *)
addr);
+ sum += ntohs(*(u
int32_t *)
addr);
addr += 2;
}
addr += 2;
}
@@
-82,5
+87,5
@@
__u16 _checksum(unsigned char *addr, int count)
// one's complement the result
sum = ~sum;
// one's complement the result
sum = ~sum;
- return htons((u
16
) sum);
+ return htons((u
int16_t
) sum);
}
}