X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.c;h=59725cadcfa85abf5a4ba73de90dc83d8c8ae1cd;hp=efd30e6f63a5fd57812271a88e8dec0b16deae39;hb=f18e30dab3c208fd353af11e365791035534f444;hpb=24874d0806bac5d75663ea9de67a71171bfc97b6 diff --git a/src/net.c b/src/net.c index efd30e6f..59725cad 100644 --- a/src/net.c +++ b/src/net.c @@ -17,7 +17,7 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: net.c,v 1.35.4.16 2000/06/30 11:45:14 guus Exp $ + $Id: net.c,v 1.35.4.34 2000/10/11 22:00:58 guus Exp $ */ #include "config.h" @@ -37,7 +37,6 @@ #include #include -#include #include #include @@ -46,6 +45,7 @@ #include "net.h" #include "netutl.h" #include "protocol.h" +#include "meta.h" #include "system.h" @@ -68,11 +68,8 @@ conn_list_t *myself = NULL; */ void strip_mac_addresses(vpn_packet_t *p) { - unsigned char tmp[MAXSIZE]; cp - memcpy(tmp, p->data, p->len); - p->len -= 12; - memcpy(p->data, &tmp[12], p->len); + memmove(p->data, p->data + 12, p->len -= 12); cp } @@ -81,65 +78,68 @@ cp */ void add_mac_addresses(vpn_packet_t *p) { - unsigned char tmp[MAXSIZE]; cp - memcpy(&tmp[12], p->data, p->len); + memcpy(p->data + 12, p->data, p->len); p->len += 12; - tmp[0] = tmp[6] = 0xfe; - tmp[1] = tmp[7] = 0xfd; - *((ip_t*)(&tmp[2])) = (ip_t)(htonl(myself->vpn_ip)); - *((ip_t*)(&tmp[8])) = *((ip_t*)(&tmp[26])); - memcpy(p->data, &tmp[0], p->len); + p->data[0] = p->data[6] = 0xfe; + p->data[1] = p->data[7] = 0xfd; + /* Really evil pointer stuff just below! */ + *((ip_t*)(&p->data[2])) = (ip_t)(htonl(myself->address)); + *((ip_t*)(&p->data[8])) = *((ip_t*)(&p->data[26])); cp } -int xsend(conn_list_t *cl, void *packet) +int xsend(conn_list_t *cl, vpn_packet_t *inpkt) { - int r; - real_packet_t rp; + vpn_packet_t outpkt; + int outlen, outpad; cp - do_encrypt((vpn_packet_t*)packet, &rp, cl->key); - rp.from = htonl(myself->vpn_ip); - rp.data.len = htons(rp.data.len); - rp.len = htons(rp.len); - + outpkt.len = inpkt->len; + EVP_EncryptInit(cl->cipher_pktctx, cl->cipher_pkttype, cl->cipher_pktkey, cl->cipher_pktiv); + EVP_EncryptUpdate(cl->cipher_pktctx, outpkt.data, &outlen, inpkt->data, inpkt->len); + EVP_EncryptFinal(cl->cipher_pktctx, outpkt.data + outlen, &outpad); + outlen += outpad; + if(debug_lvl > 3) syslog(LOG_ERR, _("Sending packet of %d bytes to %s (%s)"), - ntohs(rp.len), cl->vpn_hostname, cl->real_hostname); + outlen, cl->name, cl->hostname); - if((r = send(cl->socket, (char*)&rp, ntohs(rp.len), 0)) < 0) + total_socket_out += outlen; + + cl->want_ping = 1; + + if((send(cl->socket, (char *) &(outpkt.len), outlen + 2, 0)) < 0) { syslog(LOG_ERR, _("Error sending packet to %s (%s): %m"), - cl->vpn_hostname, cl->real_hostname); + cl->name, cl->hostname); return -1; } - - total_socket_out += r; - - cl->want_ping = 1; cp return 0; } -int xrecv(conn_list_t *cl, void *packet) +int xrecv(vpn_packet_t *inpkt) { - vpn_packet_t vp; - int lenin; + vpn_packet_t outpkt; + int outlen, outpad; cp - do_decrypt((real_packet_t*)packet, &vp, cl->key); - add_mac_addresses(&vp); - if(debug_lvl > 3) - syslog(LOG_ERR, _("Receiving packet of %d bytes from %s (%s)"), - ((real_packet_t*)packet)->len, cl->vpn_hostname, cl->real_hostname); + syslog(LOG_ERR, _("Receiving packet of %d bytes"), + inpkt->len); + + outpkt.len = inpkt->len; + EVP_DecryptInit(myself->cipher_pktctx, myself->cipher_pkttype, myself->cipher_pktkey, myself->cipher_pktiv); + EVP_DecryptUpdate(myself->cipher_pktctx, outpkt.data, &outlen, inpkt->data, inpkt->len); + /* FIXME: grok DecryptFinal + EVP_DecryptFinal(myself->cipher_pktctx, outpkt.data + outlen, &outpad); + */ + + add_mac_addresses(&outpkt); - if((lenin = write(tap_fd, &vp, vp.len + sizeof(vp.len))) < 0) + if(write(tap_fd, outpkt.data, outpkt.len) < 0) syslog(LOG_ERR, _("Can't write to tap device: %m")); else - total_tap_out += lenin; - - cl->want_ping = 0; - cl->last_ping_time = time(NULL); + total_tap_out += outpkt.len; cp return 0; } @@ -253,7 +253,7 @@ cp { if(debug_lvl > 3) syslog(LOG_DEBUG, _("Flushing send queue for %s (%s)"), - cl->vpn_hostname, cl->real_hostname); + cl->name, cl->hostname); flush_queue(cl, &(cl->sq), xsend); } @@ -261,7 +261,7 @@ cp { if(debug_lvl > 3) syslog(LOG_DEBUG, _("Flushing receive queue for %s (%s)"), - cl->vpn_hostname, cl->real_hostname); + cl->name, cl->hostname); flush_queue(cl, &(cl->rq), xrecv); } cp @@ -274,94 +274,48 @@ int send_packet(ip_t to, vpn_packet_t *packet) { conn_list_t *cl; cp - if((cl = lookup_conn(to)) == NULL) + if((cl = lookup_conn_list_ipv4(to)) == NULL) { if(debug_lvl > 3) { syslog(LOG_NOTICE, _("Trying to look up %d.%d.%d.%d in connection list failed!"), IP_ADDR_V(to)); } - - /* Is this really necessary? If we can't find "to", then neither should any uplink. (GS) */ - + return -1; - - for(cl = conn_list; cl != NULL && !cl->status.outgoing; cl = cl->next); - if(!cl) - { /* No open outgoing connection has been found. */ - if(debug_lvl > 3) - syslog(LOG_NOTICE, _("There is no remote host I can send this packet to!")); - return -1; - } - } + } /* If we ourselves have indirectdata flag set, we should send only to our uplink! */ - - if(myself->flags & EXPORTINDIRECTDATA) - { - for(cl = conn_list; cl != NULL && !cl->status.outgoing; cl = cl->next); - if(!cl) - { /* No open outgoing connection has been found. */ - if(debug_lvl > 3) - syslog(LOG_NOTICE, _("There is no remote host I can send this packet to!")); - return -1; - } - } - else - - /* If indirectdata flag is set for the destination we just looked up, - * then real_ip is actually the vpn_ip of the gateway tincd - * it is behind. - */ - - if(cl->flags & INDIRECTDATA) - { - if(debug_lvl > 3) - syslog(LOG_NOTICE, _("Indirect packet to %s via %s"), - cl->vpn_hostname, cl->real_hostname); - if((cl = lookup_conn(cl->real_ip)) == NULL) - { - if(debug_lvl > 3) - syslog(LOG_NOTICE, _("Indirect look up %d.%d.%d.%d in connection list failed!"), - IP_ADDR_V(to)); - - /* Gateway tincd dead? Should we kill it? (GS) */ - - return -1; - } - if(cl->flags & INDIRECTDATA) /* This should not happen */ - { - if(debug_lvl > 3) - syslog(LOG_NOTICE, _("Double indirection for %d.%d.%d.%d"), - IP_ADDR_V(to)); - return -1; - } - } + /* FIXME - check for indirection and reprogram it The Right Way(tm) this time. */ + if(my_key_expiry <= time(NULL)) regenerate_keys(); if(!cl->status.dataopen) if(setup_vpn_connection(cl) < 0) { - syslog(LOG_ERR, _("Could not open UDP connection to %s (%s)"), cl->vpn_hostname, cl->real_hostname); + syslog(LOG_ERR, _("Could not open UDP connection to %s (%s)"), + cl->name, cl->hostname); return -1; } if(!cl->status.validkey) { if(debug_lvl > 3) - syslog(LOG_INFO, _("%s (%s) has no valid key, queueing packet"), cl->vpn_hostname, cl->real_hostname); + syslog(LOG_INFO, _("No valid key known yet for %s (%s), queueing packet"), + cl->name, cl->hostname); add_queue(&(cl->sq), packet, packet->len + 2); if(!cl->status.waitingforkey) - send_key_request(cl->vpn_ip); /* Keys should be sent to the host running the tincd */ + send_req_key(myself, cl); /* Keys should be sent to the host running the tincd */ return 0; } if(!cl->status.active) { if(debug_lvl > 3) - syslog(LOG_INFO, _("%s (%s) is not ready, queueing packet"), cl->vpn_hostname, cl->real_hostname); + syslog(LOG_INFO, _("%s (%s) is not ready, queueing packet"), + cl->name, cl->hostname); add_queue(&(cl->sq), packet, packet->len + 2); return 0; /* We don't want to mess up, do we? */ } @@ -380,7 +334,7 @@ int setup_tap_fd(void) const char *tapfname; config_t const *cfg; cp - if((cfg = get_config_val(tapdevice)) == NULL) + if((cfg = get_config_val(config, tapdevice)) == NULL) tapfname = "/dev/tap0"; else tapfname = cfg->data.ptr; @@ -405,6 +359,7 @@ int setup_listen_meta_socket(int port) int nfd, flags; struct sockaddr_in a; const int one = 1; + config_t const *cfg; cp if((nfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) { @@ -418,6 +373,12 @@ cp return -1; } + if(setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one))) + { + syslog(LOG_ERR, _("setsockopt: %m")); + return -1; + } + flags = fcntl(nfd, F_GETFL); if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) { @@ -425,10 +386,23 @@ cp return -1; } + if((cfg = get_config_val(config, interface))) + { + if(setsockopt(nfd, SOL_SOCKET, SO_KEEPALIVE, cfg->data.ptr, strlen(cfg->data.ptr))) + { + syslog(LOG_ERR, _("Unable to bind listen socket to interface %s: %m"), cfg->data.ptr); + 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((cfg = get_config_val(config, interfaceip))) + a.sin_addr.s_addr = htonl(cfg->data.ip->ip); + else + a.sin_addr.s_addr = htonl(INADDR_ANY); if(bind(nfd, (struct sockaddr *)&a, sizeof(struct sockaddr))) { @@ -498,9 +472,9 @@ int setup_outgoing_meta_socket(conn_list_t *cl) config_t const *cfg; cp if(debug_lvl > 0) - syslog(LOG_INFO, _("Trying to connect to %s"), cl->real_hostname); + syslog(LOG_INFO, _("Trying to connect to %s"), cl->hostname); - if((cfg = get_config_val(upstreamport)) == NULL) + if((cfg = get_config_val(cl->config, port)) == NULL) cl->port = 655; else cl->port = cfg->data.val; @@ -508,29 +482,32 @@ cp cl->meta_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(cl->meta_socket == -1) { - syslog(LOG_ERR, _("Creating socket failed: %m")); + syslog(LOG_ERR, _("Creating socket for %s port %d failed: %m"), + cl->hostname, cl->port); return -1; } a.sin_family = AF_INET; a.sin_port = htons(cl->port); - a.sin_addr.s_addr = htonl(cl->real_ip); + a.sin_addr.s_addr = htonl(cl->address); if(connect(cl->meta_socket, (struct sockaddr *)&a, sizeof(a)) == -1) { - syslog(LOG_ERR, _("%s port %hd: %m"), cl->real_hostname, cl->port); + 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) { - syslog(LOG_ERR, _("fcntl: %m")); + syslog(LOG_ERR, _("fcntl for %s port %d: %m"), + cl->hostname, cl->port); return -1; } - syslog(LOG_INFO, _("Connected to %s port %hd"), - cl->real_hostname, cl->port); + if(debug_lvl > 0) + syslog(LOG_INFO, _("Connected to %s port %hd"), + cl->hostname, cl->port); cp return 0; } @@ -542,18 +519,25 @@ cp an authentication sequence during which we will do just that. */ -int setup_outgoing_connection(ip_t ip) +int setup_outgoing_connection(char *hostname) { conn_list_t *ncn; + struct hostent *h; cp + if(!(h = gethostbyname(hostname))) + { + syslog(LOG_ERR, _("Error looking up `%s': %m"), hostname); + return -1; + } + ncn = new_conn_list(); - ncn->real_ip = ip; - ncn->real_hostname = hostlookup(htonl(ip)); + ncn->address = ntohl(*((ip_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->real_hostname); + ncn->hostname); free_conn_element(ncn); return -1; } @@ -575,27 +559,30 @@ int setup_myself(void) cp myself = new_conn_list(); - if(!(cfg = get_config_val(myvpnip))) + myself->hostname = "MYSELF"; /* FIXME? */ + myself->flags = 0; + + if(!(cfg = get_config_val(config, tincname))) /* Not acceptable */ { - syslog(LOG_ERR, _("No value for my VPN IP given")); + syslog(LOG_ERR, _("Name for tinc daemon required!")); return -1; } - - myself->vpn_ip = cfg->data.ip->ip; - myself->vpn_hostname = hostlookup(htonl(myself->vpn_ip)); - myself->real_hostname = hostlookup(htonl(myself->vpn_ip)); - myself->vpn_mask = cfg->data.ip->mask; - myself->flags = 0; - - if(!(cfg = get_config_val(listenport))) + else + myself->name = (char*)cfg->data.val; + + if(!(cfg = get_config_val(myself, port))) myself->port = 655; else myself->port = cfg->data.val; - if(cfg = get_config_val(indirectdata)) + if((cfg = get_config_val(config, indirectdata))) if(cfg->data.val == stupid_true) myself->flags |= EXPORTINDIRECTDATA; + if((cfg = get_config_val(config, tcponly))) + if(cfg->data.val == stupid_true) + myself->flags |= TCPONLY; + if((myself->meta_socket = setup_listen_meta_socket(myself->port)) < 0) { syslog(LOG_ERR, _("Unable to set up a listening socket")); @@ -621,16 +608,17 @@ sigalrm_handler(int a) { config_t const *cfg; cp - cfg = get_next_config_val(upstreamip, upstreamindex++); - +/* FIXME! Use name instead of upstreamip. + cfg = get_next_config_val(config, upstreamip, upstreamindex++); +*/ while(cfg) { - if(!setup_outgoing_connection(cfg->data.ip->ip)) /* function returns 0 when there are no problems */ + if(!setup_outgoing_connection(cfg->data.ptr)) /* function returns 0 when there are no problems */ { signal(SIGALRM, SIG_IGN); return; } - cfg = get_next_config_val(upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */ +// cfg = get_next_config_val(config, upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */ } signal(SIGALRM, sigalrm_handler); @@ -651,7 +639,7 @@ int setup_network_connections(void) { config_t const *cfg; cp - if((cfg = get_config_val(pingtimeout)) == NULL) + if((cfg = get_config_val(config, pingtimeout)) == NULL) timeout = 5; else timeout = cfg->data.val; @@ -662,15 +650,15 @@ cp if(setup_myself() < 0) return -1; - if((cfg = get_next_config_val(upstreamip, upstreamindex++)) == NULL) +// if((cfg = get_next_config_val(config, upstreamip, upstreamindex++)) == NULL) /* No upstream IP given, we're listen only. */ return 0; while(cfg) { - if(!setup_outgoing_connection(cfg->data.ip->ip)) /* function returns 0 when there are no problems */ + if(!setup_outgoing_connection(cfg->data.ptr)) /* function returns 0 when there are no problems */ return 0; - cfg = get_next_config_val(upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */ +// cfg = get_next_config_val(config, upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */ } signal(SIGALRM, sigalrm_handler); @@ -728,7 +716,7 @@ int setup_vpn_connection(conn_list_t *cl) struct sockaddr_in a; cp if(debug_lvl > 0) - syslog(LOG_DEBUG, _("Opening UDP socket to %s"), cl->real_hostname); + syslog(LOG_DEBUG, _("Opening UDP socket to %s"), cl->hostname); nfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(nfd == -1) @@ -739,19 +727,20 @@ cp a.sin_family = AF_INET; a.sin_port = htons(cl->port); - a.sin_addr.s_addr = htonl(cl->real_ip); + a.sin_addr.s_addr = htonl(cl->address); if(connect(nfd, (struct sockaddr *)&a, sizeof(a)) == -1) { syslog(LOG_ERR, _("Connecting to %s port %d failed: %m"), - cl->real_hostname, cl->port); + cl->hostname, cl->port); return -1; } flags = fcntl(nfd, F_GETFL); if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) { - syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m"), __FILE__, __LINE__, nfd); + syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m %s (%s)"), __FILE__, __LINE__, nfd, + cl->name, cl->hostname); return -1; } @@ -779,8 +768,8 @@ cp return NULL; } - p->real_ip = ntohl(ci.sin_addr.s_addr); - p->real_hostname = hostlookup(ci.sin_addr.s_addr); + p->address = ntohl(ci.sin_addr.s_addr); + p->hostname = hostlookup(ci.sin_addr.s_addr); p->meta_socket = sfd; p->status.meta = 1; p->buflen = 0; @@ -789,7 +778,7 @@ cp if(debug_lvl > 0) syslog(LOG_NOTICE, _("Connection from %s port %d"), - p->real_hostname, htons(ci.sin_port)); + p->hostname, htons(ci.sin_port)); if(send_basic_info(p) < 0) { @@ -828,61 +817,32 @@ cp udp socket and write it to the ethertap device after being decrypted */ -int handle_incoming_vpn_data(conn_list_t *cl) +int handle_incoming_vpn_data() { - real_packet_t rp; + vpn_packet_t pkt; int lenin; int x, l = sizeof(x); - conn_list_t *f; cp - if(getsockopt(cl->socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0) + if(getsockopt(myself->socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0) { - syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m"), __FILE__, __LINE__, cl->socket); + syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m"), + __FILE__, __LINE__, myself->socket); return -1; } if(x) { - syslog(LOG_ERR, _("Incoming data socket error: %s"), sys_errlist[x]); + syslog(LOG_ERR, _("Incoming data socket error: %s"), strerror(x)); return -1; } - rp.len = -1; - lenin = recvfrom(cl->socket, &rp, MTU, 0, NULL, NULL); - if(lenin <= 0) + if(recvfrom(myself->socket, (char *) &(pkt.len), MTU, 0, NULL, NULL) <= 0) { - syslog(LOG_ERR, _("Receiving packet from %s failed: %m"), cl->real_hostname); + syslog(LOG_ERR, _("Receiving packet failed: %m")); return -1; } - total_socket_in += lenin; - rp.data.len = ntohs(rp.data.len); - rp.len = ntohs(rp.len); - rp.from = ntohl(rp.from); - - if(rp.len >= 0) - { - f = lookup_conn(rp.from); - if(!f) - { - syslog(LOG_ERR, _("Got packet from %s (%s) with unknown origin %d.%d.%d.%d?"), - cl->vpn_hostname, cl->real_hostname, IP_ADDR_V(rp.from)); - return -1; - } - - if(f->status.validkey) - xrecv(f, &rp); - else - { - add_queue(&(f->rq), &rp, rp.len); - if(!cl->status.waitingforkey) - send_key_request(rp.from); - } - - if(my_key_expiry <= time(NULL)) - regenerate_keys(); - } cp - return 0; + return xrecv(&pkt); } /* @@ -891,7 +851,7 @@ cp */ void terminate_connection(conn_list_t *cl) { - conn_list_t *p, *q; + conn_list_t *p; cp if(cl->status.remove) @@ -899,7 +859,7 @@ cp if(debug_lvl > 0) syslog(LOG_NOTICE, _("Closing connection with %s (%s)"), - cl->vpn_hostname, cl->real_hostname); + cl->name, cl->hostname); if(cl->status.timeout) send_timeout(cl); @@ -973,7 +933,7 @@ cp { if(debug_lvl > 1) syslog(LOG_INFO, _("%s (%s) didn't respond to PING"), - p->vpn_hostname, p->real_hostname); + p->name, p->hostname); p->status.timeout = 1; terminate_connection(p); } @@ -995,13 +955,13 @@ cp accept a new tcp connect and create a new connection */ -int handle_new_meta_connection(conn_list_t *cl) +int handle_new_meta_connection() { conn_list_t *ncn; struct sockaddr client; int nfd, len = sizeof(client); cp - if((nfd = accept(cl->meta_socket, &client, &len)) < 0) + if((nfd = accept(myself->meta_socket, &client, &len)) < 0) { syslog(LOG_ERR, _("Accepting a new connection failed: %m")); return -1; @@ -1022,103 +982,6 @@ cp return 0; } -/* - dispatch any incoming meta requests -*/ -int handle_incoming_meta_data(conn_list_t *cl) -{ - int x, l = sizeof(x); - int request, oldlen, i; - int lenin = 0; -cp - if(getsockopt(cl->meta_socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0) - { - syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m"), __FILE__, __LINE__, cl->meta_socket); - return -1; - } - if(x) - { - syslog(LOG_ERR, _("Metadata socket error: %s"), sys_errlist[x]); - return -1; - } - - if(cl->buflen >= MAXBUFSIZE) - { - syslog(LOG_ERR, _("Metadata read buffer overflow!")); - return -1; - } - - lenin = read(cl->meta_socket, cl->buffer, MAXBUFSIZE-cl->buflen); - - if(lenin<=0) - { - if(errno==EINTR) - return 0; - syslog(LOG_ERR, _("Metadata socket read error: %m")); - return -1; - } - - oldlen = cl->buflen; - cl->buflen += lenin; - - for(;;) - { - cl->reqlen = 0; - - for(i = oldlen; i < cl->buflen; i++) - { - if(cl->buffer[i] == '\n') - { - cl->buffer[i] = 0; /* replace end-of-line by end-of-string so we can use sscanf */ - cl->reqlen = i + 1; - break; - } - } - - if(cl->reqlen) - { - if(debug_lvl > 2) - syslog(LOG_DEBUG, _("Got request from %s (%s): %s"), - cl->vpn_hostname, cl->real_hostname, cl->buffer); - if(sscanf(cl->buffer, "%d", &request) == 1) - { - if((request < 0) || (request > 255) || (request_handlers[request] == NULL)) - { - syslog(LOG_ERR, _("Unknown request from %s (%s)"), - cl->vpn_hostname, cl->real_hostname); - return -1; - } - - if(request_handlers[request](cl)) /* Something went wrong. Probably scriptkiddies. Terminate. */ - { - syslog(LOG_ERR, _("Error while processing request from %s (%s)"), - cl->vpn_hostname, cl->real_hostname); - return -1; - } - } - else - { - syslog(LOG_ERR, _("Bogus data received from %s (%s)"), - cl->vpn_hostname, cl->real_hostname); - return -1; - } - - cl->buflen -= cl->reqlen; - memmove(cl->buffer, cl->buffer + cl->reqlen, cl->buflen); - oldlen = 0; - } - else - { - break; - } - } - - cl->last_ping_time = time(NULL); - cl->want_ping = 0; -cp - return 0; -} - /* check all connections to see if anything happened on their sockets @@ -1144,14 +1007,14 @@ cp */ getsockopt(p->socket, SOL_SOCKET, SO_ERROR, &x, &l); syslog(LOG_ERR, _("Outgoing data socket error for %s (%s): %s"), - p->vpn_hostname, p->real_hostname, sys_errlist[x]); + p->name, p->hostname, strerror(x)); terminate_connection(p); return; } if(p->status.meta) if(FD_ISSET(p->meta_socket, f)) - if(handle_incoming_meta_data(p) < 0) + if(receive_meta(p) < 0) { terminate_connection(p); return; @@ -1159,10 +1022,10 @@ cp } if(FD_ISSET(myself->socket, f)) - handle_incoming_vpn_data(myself); + handle_incoming_vpn_data(); if(FD_ISSET(myself->meta_socket, f)) - handle_new_meta_connection(myself); + handle_new_meta_connection(); cp } @@ -1189,15 +1052,14 @@ cp if(ether_type != 0x0800) { if(debug_lvl > 3) - syslog(LOG_INFO, _("Non-IP ethernet frame %04x from " MAC_ADDR_S), - ether_type, MAC_ADDR_V(vp.data[6])); + syslog(LOG_INFO, _("Non-IP ethernet frame %04x from %02x:%02x:%02x:%02x:%02x:%02x"), ether_type, MAC_ADDR_V(vp.data[6])); return; } if(lenin < 32) { if(debug_lvl > 3) - syslog(LOG_INFO, _("Dropping short packet")); + syslog(LOG_INFO, _("Dropping short packet from %02x:%02x:%02x:%02x:%02x:%02x"), MAC_ADDR_V(vp.data[6])); return; } @@ -1244,13 +1106,16 @@ cp if(sighup) { sighup = 0; + if(debug_lvl > 1) + syslog(LOG_INFO, _("Rereading configuration file")); close_network_connections(); clear_config(); - if(read_config_file(configfilename)) + if(read_config_file(&config, configfilename)) { syslog(LOG_ERR, _("Unable to reread configuration file, exiting")); exit(0); } + sleep(5); setup_network_connections(); continue; }