patch-2.3.15 linux/Documentation/networking/ip_masq/ip_masq-API-ex.c

• Lines: 78
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.14/linux/Documentation/networking/ip_masq/ip_masq-API-ex.c
• Orig date: Sun Oct 4 10:21:45 1998

diff -u --recursive --new-file v2.3.14/linux/Documentation/networking/ip_masq/ip_masq-API-ex.c linux/Documentation/networking/ip_masq/ip_masq-API-ex.c
@@ -1,77 +0,0 @@
-/*
-   There is only 1 optname (see setsockopt(2)), IP_FW_MASQ_CTL that
-   must be used.
-   Funcionality depends on your kernel CONFIG options, here is
-   an example you can use to create an ``incoming'' tunnel:
-
-   See "user.c" module under ipmasqadm tree for a generic example
- */
-#undef __KERNEL__	/* Makefile lazyness ;) */
-#include <stdio.h>
-#include <stdlib.h>
-#include <netinet/in.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <arpa/inet.h>
-
-#include <asm/types.h>          /* For __uXX types */
-#include <net/if.h>
-#include <netinet/ip_icmp.h>
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
-#include <linux/ip_fw.h>        /* For IP_FW_MASQ_CTL */
-#include <linux/ip_masq.h>      /* For specific masq defs */
-
-
-int create_listening_masq(struct ip_masq_ctl *masq, int proto, u_int32_t src_addr, u_int16_t src_port, u_int32_t dst_addr)
-{
-	int sockfd;
-
-	sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
-
-	if (sockfd<0) {
-		perror("socket(RAW)");
-		return -1;
-	}
-
-	memset (masq, 0, sizeof (*masq));
-
-	/*
-	 *	Want user tunnel control
-	 */
-	masq->m_target = IP_MASQ_TARGET_USER;
-
-	/*
-	 *	Want to insert new
-	 */
-	masq->m_cmd    = IP_MASQ_CMD_INSERT;
-
-	masq->u.user.protocol	= proto;
-	masq->u.user.saddr	= src_addr;
-	masq->u.user.sport	= src_port;
-	masq->u.user.rt_daddr	= inet_addr("192.168.21.239"); 
-
-	if (setsockopt(sockfd, IPPROTO_IP, 
-				IP_FW_MASQ_CTL, (char *)masq, sizeof(*masq)))    {
-		perror("setsockopt()");
-		return -1;
-	}
-	/* masq struct now contains tunnel details */
-	fprintf(stderr, "PROTO=%d SRC=0x%X:%x - MASQ=0x%X:%x - DST=0x%X:%x\n",
-			masq->u.user.protocol,
-			ntohl(masq->u.user.saddr), ntohs(masq->u.user.sport),
-			ntohl(masq->u.user.maddr), ntohs(masq->u.user.mport),
-			ntohl(masq->u.user.daddr), ntohs(masq->u.user.dport));
-	return 0;
-}
-
-int main(void) {
-	struct ip_masq_ctl masq_buf;
-
-	return create_listening_masq(&masq_buf,
-			IPPROTO_TCP, 
-			inet_addr("192.168.1.4"), 
-			htons(23),
-			inet_addr("192.168.21.3"));
-}
-