1 files changed, 295 insertions, 0 deletions
diff --git a/src/starter/starterstroke.c b/src/starter/starterstroke.c
new file mode 100644
index 000000000..fb8e74b8c
--- /dev/null
+++ b/src/starter/starterstroke.c
@@ -0,0 +1,295 @@
+/* Stroke for charon is the counterpart to whack from pluto
+ * Copyright (C) 2006 Martin Willi - Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: starterstroke.c $
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <freeswan.h>
+
+#include <constants.h>
+#include <defs.h>
+#include <log.h>
+
+#include <stroke.h>
+
+#include "starterstroke.h"
+#include "confread.h"
+#include "files.h"
+
+/**
+ * Authentication mehtods, must be the same values as in charon
+ */
+enum auth_method_t {
+	AUTH_RSA = 1,
+	AUTH_PSK = 2,
+	AUTH_DSS = 3,
+	AUTH_EAP = 201,
+};
+
+static char* push_string(stroke_msg_t *msg, char *string)
+{
+	unsigned long string_start = msg->length;
+
+	if (string == NULL || msg->length + strlen(string) >= sizeof(stroke_msg_t))
+	{
+		return NULL;
+	}
+	else
+	{
+		msg->length += strlen(string) + 1;
+		strcpy((char*)msg + string_start, string);
+		return (char*)string_start;
+	}
+}
+
+static int send_stroke_msg (stroke_msg_t *msg)
+{
+	struct sockaddr_un ctl_addr = { AF_UNIX, CHARON_CTL_FILE };
+	int byte_count;
+	char buffer[64];
+	
+	/* starter is not called from commandline, and therefore absolutely silent */
+	msg->output_verbosity = -1;
+
+	int sock = socket(AF_UNIX, SOCK_STREAM, 0);
+
+	if (sock < 0)
+	{
+		plog("socket() failed: %s", strerror(errno));
+		return -1;
+	}
+	if (connect(sock, (struct sockaddr *)&ctl_addr, offsetof(struct sockaddr_un, sun_path) + strlen(ctl_addr.sun_path)) < 0)
+	{
+		plog("connect(charon_ctl) failed: %s", strerror(errno));
+		close(sock);
+		return -1;
+	}
+
+	/* send message */
+	if (write(sock, msg, msg->length) != msg->length)
+	{
+		plog("write(charon_ctl) failed: %s", strerror(errno));
+		close(sock);
+		return -1;
+	}
+	while ((byte_count = read(sock, buffer, sizeof(buffer)-1)) > 0)
+	{
+		buffer[byte_count] = '\0';
+		plog("%s", buffer);
+	}
+	if (byte_count < 0)
+	{
+		plog("read() failed: %s", strerror(errno));
+	}
+
+	close(sock);
+	return 0;
+}
+
+static char* connection_name(starter_conn_t *conn)
+{
+	 /* if connection name is '%auto', create a new name like conn_xxxxx */
+	static char buf[32];
+
+	if (streq(conn->name, "%auto"))
+	{
+		sprintf(buf, "conn_%ld", conn->id);
+		return buf;
+	}
+	return conn->name;
+}
+
+static void ip_address2string(ip_address *addr, char *buffer, size_t len)
+{
+	switch (((struct sockaddr*)addr)->sa_family)
+	{
+		case AF_INET:
+		{
+			struct sockaddr_in* sin = (struct sockaddr_in*)addr;
+			if (inet_ntop(AF_INET, &sin->sin_addr, buffer, len))
+			{
+				return;
+			}
+			break;
+		}
+		case AF_INET6:
+		{
+			struct sockaddr_in6* sin6 = (struct sockaddr_in6*)addr;
+			if (inet_ntop(AF_INET6, &sin6->sin6_addr, buffer, len))
+			{
+				return;
+			}
+			break;
+		}
+		default:
+			break;
+	}
+	/* failed */
+	snprintf(buffer, len, "0.0.0.0");
+}
+
+
+static void starter_stroke_add_end(stroke_msg_t *msg, stroke_end_t *msg_end, starter_end_t *conn_end)
+{
+	char buffer[INET6_ADDRSTRLEN];
+	
+	msg_end->id = push_string(msg, conn_end->id);
+	msg_end->cert = push_string(msg, conn_end->cert);
+	msg_end->ca = push_string(msg, conn_end->ca);
+	msg_end->updown = push_string(msg, conn_end->updown);
+	ip_address2string(&conn_end->addr, buffer, sizeof(buffer));
+	msg_end->address = push_string(msg, buffer);
+	ip_address2string(&conn_end->subnet.addr, buffer, sizeof(buffer));
+	msg_end->subnet = push_string(msg, buffer);
+	msg_end->subnet_mask = conn_end->subnet.maskbits;
+	msg_end->sendcert = conn_end->sendcert;
+	msg_end->hostaccess = conn_end->hostaccess;
+	msg_end->tohost = !conn_end->has_client;
+	msg_end->protocol = conn_end->protocol;
+	msg_end->port = conn_end->port;
+	msg_end->virtual_ip = conn_end->modecfg;
+	ip_address2string(&conn_end->srcip, buffer, sizeof(buffer));
+	msg_end->sourceip = push_string(msg, buffer);
+}
+
+int starter_stroke_add_conn(starter_conn_t *conn)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_ADD_CONN;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.add_conn.ikev2 = conn->keyexchange == KEY_EXCHANGE_IKEV2;
+	msg.add_conn.name = push_string(&msg, connection_name(conn));
+	
+	/* RSA is preferred before PSK and EAP */
+	if (conn->policy & POLICY_RSASIG)
+	{
+		msg.add_conn.auth_method = AUTH_RSA;
+	}
+	else if (conn->policy & POLICY_PSK)
+	{
+		msg.add_conn.auth_method = AUTH_PSK;
+	}
+	else
+	{
+		msg.add_conn.auth_method = AUTH_EAP;
+	}
+	msg.add_conn.eap_type = conn->eap;
+	
+	if (conn->policy & POLICY_TUNNEL)
+	{
+		msg.add_conn.mode = 1; /* XFRM_MODE_TRANSPORT */
+	}
+	else if (conn->policy & POLICY_BEET)
+	{
+		msg.add_conn.mode = 4; /* XFRM_MODE_BEET */
+	}
+	else
+	{
+		msg.add_conn.mode = 0; /* XFRM_MODE_TUNNEL */
+	}
+ 
+	if (conn->policy & POLICY_DONT_REKEY)
+	{
+		msg.add_conn.rekey.ipsec_lifetime = 0;
+		msg.add_conn.rekey.ike_lifetime = 0;
+		msg.add_conn.rekey.margin = 0;
+		msg.add_conn.rekey.tries = 0;
+		msg.add_conn.rekey.fuzz = 0;
+	}
+	else
+	{
+		msg.add_conn.rekey.reauth = (conn->policy & POLICY_DONT_REAUTH) == LEMPTY;
+		msg.add_conn.rekey.ipsec_lifetime = conn->sa_ipsec_life_seconds;
+		msg.add_conn.rekey.ike_lifetime = conn->sa_ike_life_seconds;
+		msg.add_conn.rekey.margin = conn->sa_rekey_margin;
+		msg.add_conn.rekey.tries = conn->sa_keying_tries;
+		msg.add_conn.rekey.fuzz = conn->sa_rekey_fuzz;
+	}
+	msg.add_conn.algorithms.ike = push_string(&msg, conn->ike);
+	msg.add_conn.algorithms.esp = push_string(&msg, conn->esp);
+	msg.add_conn.dpd.delay = conn->dpd_delay;
+	msg.add_conn.dpd.action = conn->dpd_action;
+
+	starter_stroke_add_end(&msg, &msg.add_conn.me, &conn->left);
+	starter_stroke_add_end(&msg, &msg.add_conn.other, &conn->right);
+
+	return send_stroke_msg(&msg);
+}
+
+int starter_stroke_del_conn(starter_conn_t *conn)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_DEL_CONN;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.del_conn.name = push_string(&msg, connection_name(conn));
+	return send_stroke_msg(&msg);
+}
+
+int starter_stroke_route_conn(starter_conn_t *conn)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_ROUTE;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.route.name = push_string(&msg, connection_name(conn));
+	return send_stroke_msg(&msg);
+}
+
+int starter_stroke_initiate_conn(starter_conn_t *conn)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_INITIATE;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.initiate.name = push_string(&msg, connection_name(conn));
+	return send_stroke_msg(&msg);
+}
+
+int starter_stroke_add_ca(starter_ca_t *ca)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_ADD_CA;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.add_ca.name =     push_string(&msg, ca->name);
+	msg.add_ca.cacert =   push_string(&msg, ca->cacert);
+	msg.add_ca.crluri =   push_string(&msg, ca->crluri);
+	msg.add_ca.crluri2 =  push_string(&msg, ca->crluri2);
+	msg.add_ca.ocspuri =  push_string(&msg, ca->ocspuri);
+	msg.add_ca.ocspuri2 = push_string(&msg, ca->ocspuri2);
+	return send_stroke_msg(&msg);
+}
+
+int starter_stroke_del_ca(starter_ca_t *ca)
+{
+	stroke_msg_t msg;
+
+	msg.type = STR_DEL_CA;
+	msg.length = offsetof(stroke_msg_t, buffer);
+	msg.del_ca.name = push_string(&msg, ca->name);
+	return send_stroke_msg(&msg);
+}
+
+