-#ifdef HAVE_LINUX
- #include <netinet/ip.h>
- #include <netinet/tcp.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/signal.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <syslog.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-/* SunOS really wants sys/socket.h BEFORE net/if.h,
- and FreeBSD wants these lines below the rest. */
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <net/if.h>
-
-#include <openssl/rand.h>
-#include <openssl/evp.h>
-#include <openssl/pem.h>
-
-#ifndef HAVE_RAND_PSEUDO_BYTES
-#define RAND_pseudo_bytes RAND_bytes
-#endif
-
-#ifdef HAVE_TUNTAP
- #ifdef HAVE_LINUX
- #ifdef LINUX_IF_TUN_H
- #include LINUX_IF_TUN_H
- #else
- #include <linux/if_tun.h>
- #endif
- #else
- #include <net/if_tun.h>
- #endif
-#endif
-
-#ifdef HAVE_SOLARIS
- #include <sys/sockio.h>
- #include <sys/stropts.h>
- #include <net/if_tun.h>
-#endif
-
-#include <utils.h>
-#include <xalloc.h>
-#include <avl_tree.h>
-#include <list.h>
-
-#include "conf.h"
-#include "connection.h"
-#include "meta.h"
-#include "net.h"
-#include "netutl.h"
-#include "process.h"
-#include "protocol.h"
-#include "subnet.h"
-#include "process.h"
-#include "route.h"
-
-#include "system.h"
-
-int tap_fd = -1;
-int taptype = TAP_TYPE_ETHERTAP;
-int total_tap_in = 0;
-int total_tap_out = 0;
-int total_socket_in = 0;
-int total_socket_out = 0;
-
-int seconds_till_retry = 5;
-
-int keylifetime = 0;
-int keyexpires = 0;
-
-void send_udppacket(connection_t *cl, vpn_packet_t *inpkt)
-{
- vpn_packet_t outpkt;
- int outlen, outpad;
- EVP_CIPHER_CTX ctx;
- struct sockaddr_in to;
- socklen_t tolen = sizeof(to);
- vpn_packet_t *copy;
-cp
- if(!cl->status.validkey)
- {
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_INFO, _("No valid key known yet for %s (%s), queueing packet"),
- cl->name, cl->hostname);
-
- /* Since packet is on the stack of handle_tap_input(),
- we have to make a copy of it first. */
-
- copy = xmalloc(sizeof(vpn_packet_t));
- memcpy(copy, inpkt, sizeof(vpn_packet_t));
-
- list_insert_tail(cl->queue, copy);
-
- if(!cl->status.waitingforkey)
- send_req_key(myself, cl);
- return;
- }
-
- /* Encrypt the packet. */
-
- RAND_pseudo_bytes(inpkt->salt, sizeof(inpkt->salt));
-
- EVP_EncryptInit(&ctx, cl->cipher_pkttype, cl->cipher_pktkey, cl->cipher_pktkey + cl->cipher_pkttype->key_len);
- EVP_EncryptUpdate(&ctx, outpkt.salt, &outlen, inpkt->salt, inpkt->len + sizeof(inpkt->salt));
- EVP_EncryptFinal(&ctx, outpkt.salt + outlen, &outpad);
- outlen += outpad;
-
- total_socket_out += outlen;
-
- to.sin_family = AF_INET;
- to.sin_addr.s_addr = htonl(cl->address);
- to.sin_port = htons(cl->port);
-
- if((sendto(myself->socket, (char *) outpkt.salt, outlen, 0, (const struct sockaddr *)&to, tolen)) < 0)
- {
- syslog(LOG_ERR, _("Error sending packet to %s (%s): %m"),
- cl->name, cl->hostname);
- return;
- }
-cp
-}
-
-void receive_packet(connection_t *cl, vpn_packet_t *packet)
-{
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Received packet of %d bytes from %s (%s)"), packet->len, cl->name, cl->hostname);
-
- route_incoming(cl, packet);
-cp
-}
-
-void receive_udppacket(connection_t *cl, vpn_packet_t *inpkt)
-{
- vpn_packet_t outpkt;
- int outlen, outpad;
- EVP_CIPHER_CTX ctx;
-cp
- /* Decrypt the packet */
-
- EVP_DecryptInit(&ctx, myself->cipher_pkttype, myself->cipher_pktkey, myself->cipher_pktkey + myself->cipher_pkttype->key_len);
- EVP_DecryptUpdate(&ctx, outpkt.salt, &outlen, inpkt->salt, inpkt->len);
- EVP_DecryptFinal(&ctx, outpkt.salt + outlen, &outpad);
- outlen += outpad;
- outpkt.len = outlen - sizeof(outpkt.salt);
-
- total_socket_in += outlen;
-
- receive_packet(cl, &outpkt);
-cp
-}
-
-void receive_tcppacket(connection_t *cl, char *buffer, int len)
-{
- vpn_packet_t outpkt;
-cp
- outpkt.len = len;
- memcpy(outpkt.data, buffer, len);
-
- receive_packet(cl, &outpkt);
-cp
-}
-
-void accept_packet(vpn_packet_t *packet)
-{
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Writing packet of %d bytes to tap device"),
- packet->len);
-
-#ifdef HAVE_SOLARIS
- if(write(tap_fd, packet->data + 14, packet->len - 14) < 0)
- syslog(LOG_ERR, _("Can't write to tun/tap device: %m"));
- else
- total_tap_out += packet->len;
-#else
- if(taptype == TAP_TYPE_TUNTAP)
- {
- if(write(tap_fd, packet->data, packet->len) < 0)
- syslog(LOG_ERR, _("Can't write to tun/tap device: %m"));
- else
- total_tap_out += packet->len;
- }
- else /* ethertap */
- {
- if(write(tap_fd, packet->data - 2, packet->len + 2) < 0)
- syslog(LOG_ERR, _("Can't write to ethertap device: %m"));
- else
- total_tap_out += packet->len;
- }
-#endif
-cp
-}
-
-/*
- send a packet to the given vpn ip.
-*/
-void send_packet(connection_t *cl, vpn_packet_t *packet)
-{
- connection_t *hop;
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_ERR, _("Sending packet of %d bytes to %s (%s)"),
- packet->len, cl->name, cl->hostname);
-
- if(cl == myself)
- {
- if(debug_lvl >= DEBUG_TRAFFIC)
- {
- syslog(LOG_NOTICE, _("Packet is looping back to us!"));
- }
-
- return;
- }
-
- if(!cl->status.active)
- {
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_INFO, _("%s (%s) is not active, dropping packet"),
- cl->name, cl->hostname);
-
- return;
- }
-
- if(myself->options & OPTION_TCPONLY)
- {
- if(send_tcppacket(cl->nexthop, packet))
- terminate_connection(cl->nexthop, 1);
- }
- else
- {
- if(myself->options & OPTION_INDIRECT)
- send_udppacket(cl->nexthop, packet);
- else
- {
- hop = cl;
-
- while(hop->options & OPTION_INDIRECT)
- if(hop->lastbutonehop == myself)
- break;
- else
- hop = hop->lastbutonehop;
-
- send_udppacket(hop, packet);
- }
- }
-}
-
-/* Broadcast a packet to all active direct connections */
-
-void broadcast_packet(connection_t *from, vpn_packet_t *packet)
-{
- avl_node_t *node;
- connection_t *cl;
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_INFO, _("Broadcasting packet of %d bytes from %s (%s)"),
- packet->len, from->name, from->hostname);
-
- for(node = connection_tree->head; node; node = node->next)
- {
- cl = (connection_t *)node->data;
- if(cl->status.active && cl != from)
- send_packet(cl, packet);
- }
-cp
-}
-
-void flush_queue(connection_t *cl)
-{
- list_node_t *node, *next;
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_INFO, _("Flushing queue for %s (%s)"), cl->name, cl->hostname);
-
- for(node = cl->queue->head; node; node = next)
- {
- next = node->next;
- send_udppacket(cl, (vpn_packet_t *)node->data);
- list_delete_node(cl->queue, node);
- }
-cp
-}
-
-/*
- open the local ethertap device
-*/
-int setup_tap_fd(void)
-{
- int nfd;
- const char *tapfname;
- config_t const *cfg;
-#ifdef HAVE_LINUX
-# ifdef HAVE_TUNTAP
- struct ifreq ifr;
-# endif
-#endif
-#ifdef HAVE_SOLARIS
- int ip_fd = -1, if_fd = -1;
- int ppa;
- char *ptr;
-#endif
-
-cp
- if((cfg = get_config_val(config, config_tapdevice)))
- tapfname = cfg->data.ptr;
- else
- {
-#ifdef HAVE_LINUX
-# ifdef HAVE_TUNTAP
- tapfname = "/dev/net/tun";
-# else
- tapfname = "/dev/tap0";
-# endif
-#endif
-#ifdef HAVE_FREEBSD
- tapfname = "/dev/tap0";
-#endif
-#ifdef HAVE_SOLARIS
- tapfname = "/dev/tun";
-#endif
- }
-cp
- if((nfd = open(tapfname, O_RDWR | O_NONBLOCK)) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %m"), tapfname);
- return -1;
- }
-cp
- tap_fd = nfd;
-
- /* Set default MAC address for ethertap devices */
-
- mymac.type = SUBNET_MAC;
- mymac.net.mac.address.x[0] = 0xfe;
- mymac.net.mac.address.x[1] = 0xfd;
- mymac.net.mac.address.x[2] = 0x00;
- mymac.net.mac.address.x[3] = 0x00;
- mymac.net.mac.address.x[4] = 0x00;
- mymac.net.mac.address.x[5] = 0x00;
-
-#ifdef HAVE_LINUX
- #ifdef HAVE_TUNTAP
- /* Ok now check if this is an old ethertap or a new tun/tap thingie */
- memset(&ifr, 0, sizeof(ifr));
-cp
- ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
- if (netname)
- strncpy(ifr.ifr_name, netname, IFNAMSIZ);
-cp
- if (!ioctl(tap_fd, TUNSETIFF, (void *) &ifr))
- {
- syslog(LOG_INFO, _("%s is a Linux tun/tap device"), tapfname);
- taptype = TAP_TYPE_TUNTAP;
- }
- else
- if (!ioctl(tap_fd, (('T'<< 8) | 202), (void *) &ifr))
- {
- syslog(LOG_INFO, _("%s is a Linux tun/tap device"), tapfname);
- syslog(LOG_WARNING, _("Old ioctl() request used"));
- taptype = TAP_TYPE_TUNTAP;
- }
- else
- #endif
- {
- syslog(LOG_INFO, _("%s is a Linux ethertap device"), tapfname);
- taptype = TAP_TYPE_ETHERTAP;
- }
-#endif
-#ifdef HAVE_FREEBSD
- syslog(LOG_INFO, _("%s is a FreeBSD tap device"), tapfname);
- taptype = TAP_TYPE_TUNTAP;
-#endif
-#ifdef HAVE_SOLARIS
- ppa = 0;
-
- ptr = tapfname;
- while(*ptr && !isdigit((int)*ptr)) ptr++;
- ppa = atoi(ptr);
-
- if( (ip_fd = open("/dev/ip", O_RDWR, 0)) < 0){
- syslog(LOG_ERR, _("Could not open /dev/ip: %m"));
- return -1;
- }
-
- /* Assign a new PPA and get its unit number. */
- if( (ppa = ioctl(nfd, TUNNEWPPA, ppa)) < 0){
- syslog(LOG_ERR, _("Can't assign new interface: %m"));
- return -1;
- }
-
- if( (if_fd = open(tapfname, O_RDWR, 0)) < 0){
- syslog(LOG_ERR, _("Could not open %s twice: %m"), tapfname);
- return -1;
- }
-
- if(ioctl(if_fd, I_PUSH, "ip") < 0){
- syslog(LOG_ERR, _("Can't push IP module: %m"));
- return -1;
- }
-
- /* Assign ppa according to the unit number returned by tun device */
- if(ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0){
- syslog(LOG_ERR, _("Can't set PPA %d: %m"), ppa);
- return -1;
- }
-
- if(ioctl(ip_fd, I_LINK, if_fd) < 0){
- syslog(LOG_ERR, _("Can't link TUN device to IP: %m"));
- return -1;
- }
-
- syslog(LOG_INFO, _("%s is a Solaris tun device"), tapfname);
-#endif
-
-cp
- return 0;
-}
-
-/*
- set up the socket that we listen on for incoming
- (tcp) connections
-*/
-int setup_listen_meta_socket(int port)
-{
- int nfd, flags;
- struct sockaddr_in a;
- int option;
- config_t const *cfg;
-cp
- if((nfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
- {
- syslog(LOG_ERR, _("Creating metasocket failed: %m"));
- return -1;
- }
-
- flags = fcntl(nfd, F_GETFL);
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %m"),
- "fcntl");
- return -1;
- }
-
- /* Optimize TCP settings */
-
- option = 1;
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
- setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, &option, sizeof(option));
-#ifdef HAVE_LINUX
- setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-
- option = IPTOS_LOWDELAY;
- setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
-
- if((cfg = get_config_val(config, config_interface)))
- {
- if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, cfg->data.ptr, strlen(cfg->data.ptr)))
- {
- close(nfd);
- syslog(LOG_ERR, _("Unable to bind listen socket to interface %s: %m"), cfg->data.ptr);
- return -1;
- }
- }
-#endif
-
- memset(&a, 0, sizeof(a));
- a.sin_family = AF_INET;
- a.sin_port = htons(port);
-
- if((cfg = get_config_val(config, config_interfaceip)))
- a.sin_addr.s_addr = htonl(cfg->data.ip->address);
- else
- a.sin_addr.s_addr = htonl(INADDR_ANY);
-
- if(bind(nfd, (struct sockaddr *)&a, sizeof(struct sockaddr)))
- {
- close(nfd);
- syslog(LOG_ERR, _("Can't bind to port %hd/tcp: %m"), port);
- return -1;
- }
-
- if(listen(nfd, 3))
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %m"),
- "listen");
- return -1;
- }
-cp
- return nfd;
-}
-
-/*
- setup the socket for incoming encrypted
- data (the udp part)
-*/
-int setup_vpn_in_socket(int port)
-{
- int nfd, flags;
- struct sockaddr_in a;
- const int one = 1;
-cp
- if((nfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
- {
- close(nfd);
- syslog(LOG_ERR, _("Creating socket failed: %m"));
- return -1;
- }
-
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
-
- flags = fcntl(nfd, F_GETFL);
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %m"),
- "fcntl");
- return -1;
- }
-
- memset(&a, 0, sizeof(a));
- a.sin_family = AF_INET;
- a.sin_port = htons(port);
- a.sin_addr.s_addr = htonl(INADDR_ANY);
-
- if(bind(nfd, (struct sockaddr *)&a, sizeof(struct sockaddr)))
- {
- close(nfd);
- syslog(LOG_ERR, _("Can't bind to port %hd/udp: %m"), port);
- return -1;
- }
-cp
- return nfd;
-}
-
-/*
- setup an outgoing meta (tcp) socket
-*/
-int setup_outgoing_meta_socket(connection_t *cl)
-{
- int flags;
- struct sockaddr_in a;
- config_t const *cfg;
- int option;
-cp
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Trying to connect to %s"), cl->hostname);
-
- if((cfg = get_config_val(cl->config, config_port)) == NULL)
- cl->port = 655;
- else
- cl->port = cfg->data.val;
-
- cl->meta_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- if(cl->meta_socket == -1)
- {
- syslog(LOG_ERR, _("Creating socket for %s port %d failed: %m"),
- cl->hostname, cl->port);
- return -1;
- }
-
- /* Bind first to get a fix on our source port */
-
- a.sin_family = AF_INET;
- a.sin_port = htons(0);
- a.sin_addr.s_addr = htonl(INADDR_ANY);
-
- if(bind(cl->meta_socket, (struct sockaddr *)&a, sizeof(struct sockaddr)))
- {
- close(cl->meta_socket);
- syslog(LOG_ERR, _("System call `%s' failed: %m"), "bind");
- return -1;
- }
-
- /* Optimize TCP settings */
-
- option = 1;
- setsockopt(cl->meta_socket, SOL_SOCKET, SO_KEEPALIVE, &option, sizeof(option));
-#ifdef HAVE_LINUX
- setsockopt(cl->meta_socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-
- option = IPTOS_LOWDELAY;
- setsockopt(cl->meta_socket, SOL_IP, IP_TOS, &option, sizeof(option));
-#endif
- /* Connect */
-
- a.sin_family = AF_INET;
- a.sin_port = htons(cl->port);
- a.sin_addr.s_addr = htonl(cl->address);
-
- if(connect(cl->meta_socket, (struct sockaddr *)&a, sizeof(a)) == -1)
- {
- close(cl->meta_socket);
- syslog(LOG_ERR, _("%s port %hd: %m"), cl->hostname, cl->port);
- return -1;
- }
-
- flags = fcntl(cl->meta_socket, F_GETFL);
- if(fcntl(cl->meta_socket, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- close(cl->meta_socket);
- syslog(LOG_ERR, _("fcntl for %s port %d: %m"),
- cl->hostname, cl->port);
- return -1;
- }
-
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Connected to %s port %hd"),
- cl->hostname, cl->port);
-
- cl->status.meta = 1;
-cp
- return 0;
-}
-
-/*
- Setup an outgoing meta connection.
-*/
-int setup_outgoing_connection(char *name)
-{
- connection_t *ncn, *old;
- struct hostent *h;
- config_t const *cfg;
-cp
- if(check_id(name))
- {
- syslog(LOG_ERR, _("Invalid name for outgoing connection"));
- return -1;
- }
-
- /* Make sure we don't make an outgoing connection to a host that is already in our connection list */
-
- if((old = lookup_id(name)))
- {
- if(!old->status.outgoing)
- {
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_NOTICE, _("We are already connected to %s."), name);
-
- old->status.outgoing = 1;
- }
- return 0;
- }
-
- ncn = new_connection();
- asprintf(&ncn->name, "%s", name);
-
- if(read_host_config(ncn))
- {
- syslog(LOG_ERR, _("Error reading host configuration file for %s"), ncn->name);
- free_connection(ncn);
- return -1;
- }
-
- if(!(cfg = get_config_val(ncn->config, config_address)))
- {
- syslog(LOG_ERR, _("No address specified for %s"), ncn->name);
- free_connection(ncn);
- return -1;
- }
-
- if(!(h = gethostbyname(cfg->data.ptr)))
- {
- syslog(LOG_ERR, _("Error looking up `%s': %m"), cfg->data.ptr);
- free_connection(ncn);
- return -1;
- }
-
- ncn->address = ntohl(*((ipv4_t*)(h->h_addr_list[0])));
- ncn->hostname = hostlookup(htonl(ncn->address));
-
- if(setup_outgoing_meta_socket(ncn) < 0)
- {
- syslog(LOG_ERR, _("Could not set up a meta connection to %s"),
- ncn->hostname);
- free_connection(ncn);
- return -1;
- }
-
- ncn->status.outgoing = 1;
- ncn->buffer = xmalloc(MAXBUFSIZE);
- ncn->buflen = 0;
- ncn->last_ping_time = time(NULL);
-
- connection_add(ncn);
-
- send_id(ncn);
-cp
- return 0;
-}
-
-int read_rsa_public_key(connection_t *cl)
-{
- config_t const *cfg;
- FILE *fp;
- char *fname;
- void *result;
-cp
- if(!cl->rsa_key)
- cl->rsa_key = RSA_new();
-
- /* First, check for simple PublicKey statement */
-
- if((cfg = get_config_val(cl->config, config_publickey)))
- {
- BN_hex2bn(&cl->rsa_key->n, cfg->data.ptr);
- BN_hex2bn(&cl->rsa_key->e, "FFFF");
- return 0;
- }
-
- /* Else, check for PublicKeyFile statement and read it */
-
- if((cfg = get_config_val(cl->config, config_publickeyfile)))
- {
- if(is_safe_path(cfg->data.ptr))
- {
- if((fp = fopen(cfg->data.ptr, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA public key file `%s': %m"),
- cfg->data.ptr);
- return -1;
- }
- result = PEM_read_RSAPublicKey(fp, &cl->rsa_key, NULL, NULL);
- fclose(fp);
- if(!result)
- {
- syslog(LOG_ERR, _("Reading RSA public key file `%s' failed: %m"),
- cfg->data.ptr);
- return -1;
- }
- return 0;
- }
- else
- return -1;
- }
-
- /* Else, check if a harnessed public key is in the config file */
-
- asprintf(&fname, "%s/hosts/%s", confbase, cl->name);
- if((fp = fopen(fname, "r")))
- {
- result = PEM_read_RSAPublicKey(fp, &cl->rsa_key, NULL, NULL);
- fclose(fp);
- free(fname);
- if(result)
- return 0;
- }
-
- free(fname);
-
- /* Nothing worked. */
-
- syslog(LOG_ERR, _("No public key for %s specified!"), cl->name);
-cp
- return -1;
-}
-
-int read_rsa_private_key(void)
-{
- config_t const *cfg;
- FILE *fp;
- void *result;
-cp
- if(!myself->rsa_key)
- myself->rsa_key = RSA_new();
-
- if((cfg = get_config_val(config, config_privatekey)))
- {
- BN_hex2bn(&myself->rsa_key->d, cfg->data.ptr);
- BN_hex2bn(&myself->rsa_key->e, "FFFF");
- }
- else if((cfg = get_config_val(config, config_privatekeyfile)))
- {
- if((fp = fopen(cfg->data.ptr, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA private key file `%s': %m"),
- cfg->data.ptr);
- return -1;
- }
- result = PEM_read_RSAPrivateKey(fp, &myself->rsa_key, NULL, NULL);
- fclose(fp);
- if(!result)
- {
- syslog(LOG_ERR, _("Reading RSA private key file `%s' failed: %m"),
- cfg->data.ptr);
- return -1;
- }
- }
- else
- {
- syslog(LOG_ERR, _("No private key for tinc daemon specified!"));
- return -1;
- }
-cp
- return 0;
-}
-
-/*
- Configure connection_t myself and set up the local sockets (listen only)
-*/
-int setup_myself(void)
-{
- config_t const *cfg;
- config_t *next;
- subnet_t *net;
-cp
- myself = new_connection();
-
- asprintf(&myself->hostname, _("MYSELF"));
- myself->options = 0;
- myself->protocol_version = PROT_CURRENT;
-
- if(!(cfg = get_config_val(config, config_name))) /* Not acceptable */
- {
- syslog(LOG_ERR, _("Name for tinc daemon required!"));
- return -1;
- }
- else
- asprintf(&myself->name, "%s", (char*)cfg->data.val);
-
- if(check_id(myself->name))
- {
- syslog(LOG_ERR, _("Invalid name for myself!"));
- return -1;
- }
-cp
- if(read_rsa_private_key())
- return -1;
-
- if(read_host_config(myself))
- {
- syslog(LOG_ERR, _("Cannot open host configuration file for myself!"));
- return -1;
- }
-
- if(read_rsa_public_key(myself))
- return -1;
-cp
-
-/*
- if(RSA_check_key(myself->rsa_key) != 1)
- {
- syslog(LOG_ERR, _("Invalid public/private keypair!"));
- return -1;
- }
-*/
- if(!(cfg = get_config_val(myself->config, config_port)))
- myself->port = 655;
- else
- myself->port = cfg->data.val;
-
-/* Read in all the subnets specified in the host configuration file */
-
- for(next = myself->config; (cfg = get_config_val(next, config_subnet)); next = cfg->next)
- {
- net = new_subnet();
- net->type = SUBNET_IPV4;
- net->net.ipv4.address = cfg->data.ip->address;
- net->net.ipv4.mask = cfg->data.ip->mask;
-
- /* Teach newbies what subnets are... */
-
- if((net->net.ipv4.address & net->net.ipv4.mask) != net->net.ipv4.address)
- {
- syslog(LOG_ERR, _("Network address and subnet mask do not match!"));
- return -1;
- }
-
- subnet_add(myself, net);
- }
-
-cp
- /* Check some options */
-
- if((cfg = get_config_val(config, config_indirectdata)))
- if(cfg->data.val == stupid_true)
- myself->options |= OPTION_INDIRECT;
-
- if((cfg = get_config_val(config, config_tcponly)))
- if(cfg->data.val == stupid_true)
- myself->options |= OPTION_TCPONLY;
-
- if((cfg = get_config_val(myself->config, config_indirectdata)))
- if(cfg->data.val == stupid_true)
- myself->options |= OPTION_INDIRECT;
-
- if((cfg = get_config_val(myself->config, config_tcponly)))
- if(cfg->data.val == stupid_true)
- myself->options |= OPTION_TCPONLY;
-
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
-
- if((cfg = get_config_val(config, config_mode)))
- {
- if(!strcasecmp(cfg->data.ptr, "router"))
- routing_mode = RMODE_ROUTER;
- else if (!strcasecmp(cfg->data.ptr, "switch"))
- routing_mode = RMODE_SWITCH;
- else if (!strcasecmp(cfg->data.ptr, "hub"))
- routing_mode = RMODE_HUB;
- else
- {
- syslog(LOG_ERR, _("Invalid routing mode!"));
- return -1;
- }
- }
- else
- routing_mode = RMODE_ROUTER;
-
-cp
- /* Open sockets */
-
- if((myself->meta_socket = setup_listen_meta_socket(myself->port)) < 0)
- {
- syslog(LOG_ERR, _("Unable to set up a listening TCP socket!"));
- return -1;
- }
-
- if((myself->socket = setup_vpn_in_socket(myself->port)) < 0)
- {
- syslog(LOG_ERR, _("Unable to set up a listening UDP socket!"));
- return -1;
- }
-cp
- /* Generate packet encryption key */