338 lines
10 KiB
C
338 lines
10 KiB
C
/*
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* Copyright (C) 2006 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <credentials/auth_cfg.h>
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#include <library.h>
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#include <utils/debug.h>
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#include <stroke_msg.h>
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#include "starterstroke.h"
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#include "confread.h"
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#include "files.h"
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#define IPV4_LEN 4
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#define IPV6_LEN 16
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static char* push_string(stroke_msg_t *msg, char *string)
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{
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unsigned long string_start = msg->length;
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if (string == NULL || msg->length + strlen(string) >= sizeof(stroke_msg_t))
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{
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return NULL;
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}
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else
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{
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msg->length += strlen(string) + 1;
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strcpy((char*)msg + string_start, string);
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return (char*)string_start;
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}
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}
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static int send_stroke_msg (stroke_msg_t *msg)
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{
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struct sockaddr_un ctl_addr;
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int byte_count;
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char buffer[64];
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ctl_addr.sun_family = AF_UNIX;
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strcpy(ctl_addr.sun_path, CHARON_CTL_FILE);
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/* starter is not called from commandline, and therefore absolutely silent */
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msg->output_verbosity = -1;
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int sock = socket(AF_UNIX, SOCK_STREAM, 0);
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if (sock < 0)
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{
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DBG1(DBG_APP, "socket() failed: %s", strerror(errno));
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return -1;
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}
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if (connect(sock, (struct sockaddr *)&ctl_addr, offsetof(struct sockaddr_un, sun_path) + strlen(ctl_addr.sun_path)) < 0)
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{
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DBG1(DBG_APP, "connect(charon_ctl) failed: %s", strerror(errno));
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close(sock);
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return -1;
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}
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/* send message */
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if (write(sock, msg, msg->length) != msg->length)
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{
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DBG1(DBG_APP, "write(charon_ctl) failed: %s", strerror(errno));
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close(sock);
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return -1;
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}
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while ((byte_count = read(sock, buffer, sizeof(buffer)-1)) > 0)
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{
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buffer[byte_count] = '\0';
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DBG1(DBG_APP, "%s", buffer);
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}
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if (byte_count < 0)
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{
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DBG1(DBG_APP, "read() failed: %s", strerror(errno));
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}
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close(sock);
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return 0;
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}
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static char* connection_name(starter_conn_t *conn)
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{
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/* if connection name is '%auto', create a new name like conn_xxxxx */
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static char buf[32];
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if (streq(conn->name, "%auto"))
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{
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sprintf(buf, "conn_%lu", conn->id);
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return buf;
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}
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return conn->name;
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}
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static void starter_stroke_add_end(stroke_msg_t *msg, stroke_end_t *msg_end, starter_end_t *conn_end)
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{
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msg_end->auth = push_string(msg, conn_end->auth);
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msg_end->auth2 = push_string(msg, conn_end->auth2);
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msg_end->id = push_string(msg, conn_end->id);
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msg_end->id2 = push_string(msg, conn_end->id2);
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msg_end->rsakey = push_string(msg, conn_end->rsakey);
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msg_end->cert = push_string(msg, conn_end->cert);
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msg_end->cert2 = push_string(msg, conn_end->cert2);
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msg_end->cert_policy = push_string(msg, conn_end->cert_policy);
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msg_end->ca = push_string(msg, conn_end->ca);
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msg_end->ca2 = push_string(msg, conn_end->ca2);
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msg_end->groups = push_string(msg, conn_end->groups);
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msg_end->groups2 = push_string(msg, conn_end->groups2);
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msg_end->updown = push_string(msg, conn_end->updown);
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if (conn_end->host)
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{
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msg_end->address = push_string(msg, conn_end->host);
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}
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else
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{
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msg_end->address = push_string(msg, "%any");
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}
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msg_end->ikeport = conn_end->ikeport;
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msg_end->subnets = push_string(msg, conn_end->subnet);
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msg_end->sourceip = push_string(msg, conn_end->sourceip);
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msg_end->dns = push_string(msg, conn_end->dns);
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msg_end->sendcert = conn_end->sendcert;
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msg_end->hostaccess = conn_end->hostaccess;
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msg_end->tohost = !conn_end->subnet;
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msg_end->allow_any = conn_end->allow_any;
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msg_end->protocol = conn_end->protocol;
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msg_end->from_port = conn_end->from_port;
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msg_end->to_port = conn_end->to_port;
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}
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int starter_stroke_add_conn(starter_config_t *cfg, starter_conn_t *conn)
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{
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stroke_msg_t msg;
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memset(&msg, 0, sizeof(msg));
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msg.type = STR_ADD_CONN;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.add_conn.version = conn->keyexchange;
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msg.add_conn.name = push_string(&msg, connection_name(conn));
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msg.add_conn.eap_identity = push_string(&msg, conn->eap_identity);
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msg.add_conn.aaa_identity = push_string(&msg, conn->aaa_identity);
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msg.add_conn.xauth_identity = push_string(&msg, conn->xauth_identity);
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msg.add_conn.mode = conn->mode;
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msg.add_conn.proxy_mode = conn->proxy_mode;
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if (!(conn->options & SA_OPTION_DONT_REKEY))
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{
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msg.add_conn.rekey.reauth = !(conn->options & SA_OPTION_DONT_REAUTH);
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msg.add_conn.rekey.ipsec_lifetime = conn->sa_ipsec_life_seconds;
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msg.add_conn.rekey.ike_lifetime = conn->sa_ike_life_seconds;
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msg.add_conn.rekey.margin = conn->sa_rekey_margin;
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msg.add_conn.rekey.life_bytes = conn->sa_ipsec_life_bytes;
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msg.add_conn.rekey.margin_bytes = conn->sa_ipsec_margin_bytes;
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msg.add_conn.rekey.life_packets = conn->sa_ipsec_life_packets;
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msg.add_conn.rekey.margin_packets = conn->sa_ipsec_margin_packets;
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msg.add_conn.rekey.fuzz = conn->sa_rekey_fuzz;
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}
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msg.add_conn.rekey.tries = conn->sa_keying_tries;
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msg.add_conn.mobike = conn->options & SA_OPTION_MOBIKE;
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msg.add_conn.force_encap = conn->options & SA_OPTION_FORCE_ENCAP;
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msg.add_conn.fragmentation = conn->fragmentation;
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msg.add_conn.ikedscp = conn->ikedscp;
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msg.add_conn.ipcomp = conn->options & SA_OPTION_COMPRESS;
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msg.add_conn.install_policy = conn->install_policy;
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msg.add_conn.aggressive = conn->aggressive;
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msg.add_conn.pushmode = conn->options & SA_OPTION_MODECFG_PUSH;
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msg.add_conn.crl_policy = (crl_policy_t)cfg->setup.strictcrlpolicy;
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msg.add_conn.unique = cfg->setup.uniqueids;
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msg.add_conn.algorithms.ike = push_string(&msg, conn->ike);
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msg.add_conn.algorithms.esp = push_string(&msg, conn->esp);
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msg.add_conn.algorithms.ah = push_string(&msg, conn->ah);
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msg.add_conn.dpd.delay = conn->dpd_delay;
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msg.add_conn.dpd.timeout = conn->dpd_timeout;
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msg.add_conn.dpd.action = conn->dpd_action;
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msg.add_conn.close_action = conn->close_action;
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msg.add_conn.inactivity = conn->inactivity;
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msg.add_conn.ikeme.mediation = conn->me_mediation;
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msg.add_conn.ikeme.mediated_by = push_string(&msg, conn->me_mediated_by);
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msg.add_conn.ikeme.peerid = push_string(&msg, conn->me_peerid);
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msg.add_conn.reqid = conn->reqid;
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msg.add_conn.mark_in.value = conn->mark_in.value;
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msg.add_conn.mark_in.mask = conn->mark_in.mask;
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msg.add_conn.mark_out.value = conn->mark_out.value;
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msg.add_conn.mark_out.mask = conn->mark_out.mask;
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msg.add_conn.tfc = conn->tfc;
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starter_stroke_add_end(&msg, &msg.add_conn.me, &conn->left);
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starter_stroke_add_end(&msg, &msg.add_conn.other, &conn->right);
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if (!msg.add_conn.me.auth && !msg.add_conn.other.auth &&
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conn->authby)
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{ /* leftauth/rightauth not set, use legacy options */
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if (streq(conn->authby, "rsa") || streq(conn->authby, "rsasig") ||
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streq(conn->authby, "ecdsa") || streq(conn->authby, "ecdsasig") ||
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streq(conn->authby, "pubkey"))
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{
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msg.add_conn.me.auth = push_string(&msg, "pubkey");
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msg.add_conn.other.auth = push_string(&msg, "pubkey");
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}
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else if (streq(conn->authby, "secret") || streq(conn->authby, "psk"))
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{
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msg.add_conn.me.auth = push_string(&msg, "psk");
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msg.add_conn.other.auth = push_string(&msg, "psk");
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}
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else if (streq(conn->authby, "xauthrsasig"))
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{
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msg.add_conn.me.auth = push_string(&msg, "pubkey");
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msg.add_conn.other.auth = push_string(&msg, "pubkey");
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if (conn->options & SA_OPTION_XAUTH_SERVER)
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{
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msg.add_conn.other.auth2 = push_string(&msg, "xauth");
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}
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else
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{
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msg.add_conn.me.auth2 = push_string(&msg, "xauth");
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}
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}
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else if (streq(conn->authby, "xauthpsk"))
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{
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msg.add_conn.me.auth = push_string(&msg, "psk");
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msg.add_conn.other.auth = push_string(&msg, "psk");
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if (conn->options & SA_OPTION_XAUTH_SERVER)
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{
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msg.add_conn.other.auth2 = push_string(&msg, "xauth");
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}
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else
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{
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msg.add_conn.me.auth2 = push_string(&msg, "xauth");
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}
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}
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}
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return send_stroke_msg(&msg);
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}
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int starter_stroke_del_conn(starter_conn_t *conn)
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{
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stroke_msg_t msg;
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msg.type = STR_DEL_CONN;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.del_conn.name = push_string(&msg, connection_name(conn));
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return send_stroke_msg(&msg);
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}
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int starter_stroke_route_conn(starter_conn_t *conn)
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{
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stroke_msg_t msg;
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msg.type = STR_ROUTE;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.route.name = push_string(&msg, connection_name(conn));
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return send_stroke_msg(&msg);
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}
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int starter_stroke_unroute_conn(starter_conn_t *conn)
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{
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stroke_msg_t msg;
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msg.type = STR_UNROUTE;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.route.name = push_string(&msg, connection_name(conn));
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return send_stroke_msg(&msg);
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}
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int starter_stroke_initiate_conn(starter_conn_t *conn)
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{
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stroke_msg_t msg;
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msg.type = STR_INITIATE;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.initiate.name = push_string(&msg, connection_name(conn));
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return send_stroke_msg(&msg);
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}
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int starter_stroke_add_ca(starter_ca_t *ca)
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{
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stroke_msg_t msg;
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msg.type = STR_ADD_CA;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.add_ca.name = push_string(&msg, ca->name);
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msg.add_ca.cacert = push_string(&msg, ca->cacert);
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msg.add_ca.crluri = push_string(&msg, ca->crluri);
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msg.add_ca.crluri2 = push_string(&msg, ca->crluri2);
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msg.add_ca.ocspuri = push_string(&msg, ca->ocspuri);
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msg.add_ca.ocspuri2 = push_string(&msg, ca->ocspuri2);
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msg.add_ca.certuribase = push_string(&msg, ca->certuribase);
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return send_stroke_msg(&msg);
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}
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int starter_stroke_del_ca(starter_ca_t *ca)
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{
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stroke_msg_t msg;
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msg.type = STR_DEL_CA;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.del_ca.name = push_string(&msg, ca->name);
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return send_stroke_msg(&msg);
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}
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int starter_stroke_configure(starter_config_t *cfg)
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{
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stroke_msg_t msg;
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if (cfg->setup.cachecrls)
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{
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msg.type = STR_CONFIG;
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msg.length = offsetof(stroke_msg_t, buffer);
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msg.config.cachecrl = 1;
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return send_stroke_msg(&msg);
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}
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return 0;
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}
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