From abdbf99335f99095f7cccb9e436e0949eddd4973 Mon Sep 17 00:00:00 2001
From: angelos <angelos@openbsd.org>
Date: Fri, 28 Feb 1997 03:44:52 +0000
Subject: [PATCH] IPsec socket API hooks are in.

---
 sys/netinet/in.h        | 23 ++++++++++++++++-
 sys/netinet/ip_input.c  |  6 ++++-
 sys/netinet/ip_output.c | 55 ++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 81 insertions(+), 3 deletions(-)

diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index d69dbcef7c9..9fca4a44a4c 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in.h,v 1.7 1997/02/20 01:07:45 deraadt Exp $	*/
+/*	$OpenBSD: in.h,v 1.8 1997/02/28 03:44:52 angelos Exp $	*/
 /*	$NetBSD: in.h,v 1.20 1996/02/13 23:41:47 christos Exp $	*/
 
 /*
@@ -231,6 +231,27 @@ struct ip_opts {
 #define	IP_DROP_MEMBERSHIP	13   /* ip_mreq; drop an IP group membership */
 	/* 14-17 left empty for future compatibility with FreeBSD */
 #define IP_PORTRANGE		19   /* int; range to choose for unspec port */
+#define IP_AUTH_LEVEL		20   /* u_char; authentication used */
+#define IP_ESP_TRANS_LEVEL      21   /* u_char; transport encryption */
+#define IP_ESP_NETWORK_LEVEL    22   /* u_char; full-packet encryption */
+
+
+/*
+ * Security levels - IPsec, not IPSO
+ */
+
+#define IPSEC_LEVEL_BYPASS      0x00    /* Bypass policy altogether */
+#define IPSEC_LEVEL_NONE        0x00    /* Send clear, accept any */
+#define IPSEC_LEVEL_AVAIL       0x01    /* Send secure if SA available */
+#define IPSEC_LEVEL_USE         0x02    /* Send secure, accept any */
+#define IPSEC_LEVEL_REQUIRE     0x03    /* Require secure inbound, also use */
+#define IPSEC_LEVEL_UNIQUE      0x04    /* Use outbound SA that is unique */
+#define IPSEC_LEVEL_DEFAULT     IPSEC_LEVEL_NONE
+
+#define IPSEC_AUTH_LEVEL_DEFAULT IPSEC_LEVEL_DEFAULT
+#define IPSEC_ESP_TRANS_LEVEL_DEFAULT IPSEC_LEVEL_DEFAULT
+#define IPSEC_ESP_NETWORK_LEVEL_DEFAULT IPSEC_LEVEL_DEFAULT
+
 
 /*
  * Defaults and limits for options
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index c0decb9a188..4753f601726 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_input.c,v 1.24 1997/02/22 13:25:28 angelos Exp $	*/
+/*	$OpenBSD: ip_input.c,v 1.25 1997/02/28 03:44:53 angelos Exp $	*/
 /*	$NetBSD: ip_input.c,v 1.30 1996/03/16 23:53:58 christos Exp $	*/
 
 /*
@@ -95,6 +95,10 @@ int	ip_directedbcast = IPDIRECTEDBCAST;
 int	ipprintfs = 0;
 #endif
 
+u_char  ipsec_auth_default_level = IPSEC_AUTH_LEVEL_DEFAULT;
+u_char  ipsec_esp_trans_default_level = IPSEC_ESP_TRANS_LEVEL_DEFAULT;
+u_char  ipsec_esp_network_default_level = IPSEC_ESP_NETWORK_LEVEL_DEFAULT;
+
 /* from in_pcb.c */
 extern int ipport_firstauto;
 extern int ipport_lastauto;
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 0bfe9cce3f7..045444f6552 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_output.c,v 1.7 1997/02/20 01:08:06 deraadt Exp $	*/
+/*	$OpenBSD: ip_output.c,v 1.8 1997/02/28 03:44:54 angelos Exp $	*/
 /*	$NetBSD: ip_output.c,v 1.28 1996/02/13 23:43:07 christos Exp $	*/
 
 /*
@@ -794,6 +794,35 @@ ip_ctloutput(op, so, level, optname, mp)
 			}
 			break;
 
+		case IP_AUTH_LEVEL:
+		case IP_ESP_TRANS_LEVEL:
+		case IP_ESP_NETWORK_LEVEL:
+#ifndef IPSEC
+		    error = EINVAL;
+#else
+		    if (m == 0 || m->m_len != sizeof(u_char))
+		      error = EINVAL;
+		    else {
+			optval = *mtod(m, u_char *);
+			
+			switch (optname) {
+			    case IP_AUTH_LEVEL:
+				so->so_seclevel[SL_AUTH] = optval;
+				break;
+
+			    case IP_ESP_TRANS_LEVEL:
+				so->so_seclevel[SL_ESP_TRANS] = optval;
+				break;
+				
+			    case IP_ESP_NETWORK_LEVEL:
+				so->so_seclevel[SL_ESP_NETWORK] = optval;
+				break;
+			}
+			
+		    }
+#endif
+		    break;
+		    
 		default:
 			error = ENOPROTOOPT;
 			break;
@@ -871,6 +900,30 @@ ip_ctloutput(op, so, level, optname, mp)
 			*mtod(m, int *) = optval;
 			break;
 
+		case IP_AUTH_LEVEL:
+		case IP_ESP_TRANS_LEVEL:
+		case IP_ESP_NETWORK_LEVEL:
+#ifndef IPSEC
+		    *mtod(m, int *) = IPSEC_LEVEL_NONE;
+#else
+		    switch (optname) {
+			    case IP_AUTH_LEVEL:
+				    optval = so->so_seclevel[SL_AUTH];
+				    break;
+				
+			    case IP_ESP_TRANS_LEVEL:
+				    optval = so->so_seclevel[SL_ESP_TRANS];
+				    break;
+				
+			    case IP_ESP_NETWORK_LEVEL:
+				    optval = so->so_seclevel[SL_ESP_NETWORK];
+				    break;
+		    }
+		    
+		    *mtod(m, int *) = optval;
+#endif
+		    break;
+				
 		default:
 			error = ENOPROTOOPT;
 			break;
-- 
2.20.1