X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet_setup.c;h=b31bed737e0653ae0a0c8fb1a7bf130a6c6364a0;hp=623eb1856692507628971263529110e5ff244cc4;hb=3f59a26d8098b8b0902b8746715508360b347f47;hpb=075e6828a7533e7daa790225f17aa6bb39703278 diff --git a/src/net_setup.c b/src/net_setup.c index 623eb185..b31bed73 100644 --- a/src/net_setup.c +++ b/src/net_setup.c @@ -1,7 +1,9 @@ /* net_setup.c -- Setup. Copyright (C) 1998-2005 Ivo Timmermans, - 2000-2009 Guus Sliepen + 2000-2010 Guus Sliepen + 2006 Scott Lamb + 2010 Brandon Black 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 @@ -13,11 +15,9 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - $Id$ + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "system.h" @@ -50,8 +50,6 @@ bool read_rsa_public_key(connection_t *c) { char *n; bool result; - cp(); - /* First, check for simple PublicKey statement */ if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) { @@ -63,12 +61,12 @@ bool read_rsa_public_key(connection_t *c) { /* Else, check for PublicKeyFile statement and read it */ if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) - asprintf(&fname, "%s/hosts/%s", confbase, c->name); + xasprintf(&fname, "%s/hosts/%s", confbase, c->name); fp = fopen(fname, "r"); if(!fp) { - logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"), + logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno)); free(fname); return false; @@ -78,7 +76,7 @@ bool read_rsa_public_key(connection_t *c) { fclose(fp); if(!result) - logger(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"), fname, strerror(errno)); + logger(LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno)); free(fname); return result; } @@ -89,13 +87,11 @@ bool read_rsa_private_key() { char *n, *d; bool result; - cp(); - /* First, check for simple PrivateKey statement */ if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) { - if(!get_config_string(lookup_config(myself->connection->config_tree, "PublicKey"), &n)) { - logger(LOG_ERR, _("PrivateKey used but no PublicKey found!")); + if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) { + logger(LOG_ERR, "PrivateKey used but no PublicKey found!"); free(d); return false; } @@ -113,7 +109,7 @@ bool read_rsa_private_key() { fp = fopen(fname, "r"); if(!fp) { - logger(LOG_ERR, _("Error reading RSA private key file `%s': %s"), + logger(LOG_ERR, "Error reading RSA private key file `%s': %s", fname, strerror(errno)); free(fname); return false; @@ -123,20 +119,20 @@ bool read_rsa_private_key() { struct stat s; if(fstat(fileno(fp), &s)) { - logger(LOG_ERR, _("Could not stat RSA private key file `%s': %s'"), fname, strerror(errno)); + logger(LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno)); free(fname); return false; } if(s.st_mode & ~0100700) - logger(LOG_WARNING, _("Warning: insecure file permissions for RSA private key file `%s'!"), fname); + logger(LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname); #endif result = rsa_read_pem_private_key(&myself->connection->rsa, fp); fclose(fp); if(!result) - logger(LOG_ERR, _("Reading RSA private key file `%s' failed: %s"), fname, strerror(errno)); + logger(LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno)); free(fname); return result; } @@ -149,7 +145,7 @@ static void keyexpire_handler(int fd, short events, void *data) { void regenerate_key() { if(timeout_initialized(&keyexpire_event)) { - ifdebug(STATUS) logger(LOG_INFO, _("Expiring symmetric keys")); + ifdebug(STATUS) logger(LOG_INFO, "Expiring symmetric keys"); event_del(&keyexpire_event); send_key_changed(broadcast, myself); } else { @@ -159,6 +155,68 @@ void regenerate_key() { event_add(&keyexpire_event, &(struct timeval){keylifetime, 0}); } +/* + Read Subnets from all host config files +*/ +void load_all_subnets(void) { + DIR *dir; + struct dirent *ent; + char *dname; + char *fname; + splay_tree_t *config_tree; + config_t *cfg; + subnet_t *s, *s2; + node_t *n; + bool result; + + xasprintf(&dname, "%s/hosts", confbase); + dir = opendir(dname); + if(!dir) { + logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno)); + free(dname); + return; + } + + while((ent = readdir(dir))) { + if(!check_id(ent->d_name)) + continue; + + n = lookup_node(ent->d_name); + #ifdef _DIRENT_HAVE_D_TYPE + //if(ent->d_type != DT_REG) + // continue; + #endif + + xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name); + init_configuration(&config_tree); + result = read_config_file(config_tree, fname); + free(fname); + if(!result) + continue; + + if(!n) { + n = new_node(); + n->name = xstrdup(ent->d_name); + node_add(n); + } + + for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) { + if(!get_config_subnet(cfg, &s)) + continue; + + if((s2 = lookup_subnet(n, s))) { + s2->expires = -1; + } else { + subnet_add(n, s); + } + } + + exit_configuration(&config_tree); + } + + closedir(dir); +} + /* Configure node_t myself and set up the local sockets (listen only) */ @@ -166,52 +224,60 @@ bool setup_myself(void) { config_t *cfg; subnet_t *subnet; char *name, *hostname, *mode, *afname, *cipher, *digest; + char *fname = NULL; char *address = NULL; char *envp[5]; struct addrinfo *ai, *aip, hint = {0}; bool choice; int i, err; - - cp(); + int replaywin_int; myself = new_node(); myself->connection = new_connection(); - init_configuration(&myself->connection->config_tree); - xasprintf(&myself->hostname, _("MYSELF")); - xasprintf(&myself->connection->hostname, _("MYSELF")); + myself->hostname = xstrdup("MYSELF"); + myself->connection->hostname = xstrdup("MYSELF"); myself->connection->options = 0; myself->connection->protocol_version = PROT_CURRENT; if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */ - logger(LOG_ERR, _("Name for tinc daemon required!")); + logger(LOG_ERR, "Name for tinc daemon required!"); return false; } if(!check_id(name)) { - logger(LOG_ERR, _("Invalid name for myself!")); + logger(LOG_ERR, "Invalid name for myself!"); free(name); return false; } myself->name = name; myself->connection->name = xstrdup(name); - - if(!read_connection_config(myself->connection)) { - logger(LOG_ERR, _("Cannot open host configuration file for myself!")); - return false; - } + xasprintf(&fname, "%s/hosts/%s", confbase, name); + read_config_options(config_tree, name); + read_config_file(config_tree, fname); + free(fname); if(!read_rsa_private_key()) return false; - if(!get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport)) - xasprintf(&myport, "655"); + if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) + myport = xstrdup("655"); + + if(!atoi(myport)) { + struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM); + sockaddr_t sa; + if(!ai || !ai->ai_addr) + return false; + free(myport); + memcpy(&sa, ai->ai_addr, ai->ai_addrlen); + sockaddr2str(&sa, NULL, &myport); + } /* Read in all the subnets specified in the host configuration file */ - cfg = lookup_config(myself->connection->config_tree, "Subnet"); + cfg = lookup_config(config_tree, "Subnet"); while(cfg) { if(!get_config_subnet(cfg, &subnet)) @@ -219,7 +285,7 @@ bool setup_myself(void) { subnet_add(myself, subnet); - cfg = lookup_config_next(myself->connection->config_tree, cfg); + cfg = lookup_config_next(config_tree, cfg); } /* Check some options */ @@ -230,16 +296,13 @@ bool setup_myself(void) { if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice) myself->options |= OPTION_TCPONLY; - if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice) && choice) - myself->options |= OPTION_INDIRECT; - - if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice) && choice) - myself->options |= OPTION_TCPONLY; - if(myself->options & OPTION_TCPONLY) myself->options |= OPTION_INDIRECT; + get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly); + get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets); get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver); + strictsubnets |= tunnelserver; if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) { if(!strcasecmp(mode, "router")) @@ -249,25 +312,41 @@ bool setup_myself(void) { else if(!strcasecmp(mode, "hub")) routing_mode = RMODE_HUB; else { - logger(LOG_ERR, _("Invalid routing mode!")); + logger(LOG_ERR, "Invalid routing mode!"); return false; } free(mode); - } else - routing_mode = RMODE_ROUTER; + } - // Enable PMTUDiscovery by default if we are in router mode. + if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) { + if(!strcasecmp(mode, "off")) + forwarding_mode = FMODE_OFF; + else if(!strcasecmp(mode, "internal")) + forwarding_mode = FMODE_INTERNAL; + else if(!strcasecmp(mode, "kernel")) + forwarding_mode = FMODE_KERNEL; + else { + logger(LOG_ERR, "Invalid forwarding mode!"); + return false; + } + free(mode); + } - choice = routing_mode == RMODE_ROUTER; - get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice); - if(choice) + choice = true; + get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice); + if(choice) myself->options |= OPTION_PMTU_DISCOVERY; + choice = true; + get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice); + if(choice) + myself->options |= OPTION_CLAMP_MSS; + get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance); #if !defined(SOL_IP) || !defined(IP_TOS) if(priorityinheritance) - logger(LOG_WARNING, _("%s not supported on this platform"), "PriorityInheritance"); + logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance"); #endif if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire)) @@ -275,12 +354,34 @@ bool setup_myself(void) { if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) { if(maxtimeout <= 0) { - logger(LOG_ERR, _("Bogus maximum timeout!")); + logger(LOG_ERR, "Bogus maximum timeout!"); return false; } } else maxtimeout = 900; + if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) { + if(udp_rcvbuf <= 0) { + logger(LOG_ERR, "UDPRcvBuf cannot be negative!"); + return false; + } + } + + if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) { + if(udp_sndbuf <= 0) { + logger(LOG_ERR, "UDPSndBuf cannot be negative!"); + return false; + } + } + + if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) { + if(replaywin_int < 0) { + logger(LOG_ERR, "ReplayWindow cannot be negative!"); + return false; + } + replaywin = (unsigned)replaywin_int; + } + if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) { if(!strcasecmp(afname, "IPv4")) addressfamily = AF_INET; @@ -289,7 +390,7 @@ bool setup_myself(void) { else if(!strcasecmp(afname, "any")) addressfamily = AF_UNSPEC; else { - logger(LOG_ERR, _("Invalid address family!")); + logger(LOG_ERR, "Invalid address family!"); return false; } free(afname); @@ -299,11 +400,11 @@ bool setup_myself(void) { /* Generate packet encryption key */ - if(!get_config_string(lookup_config(myself->connection->config_tree, "Cipher"), &cipher)) - cipher = xstrdup("aes256"); + if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher)) + cipher = xstrdup("blowfish"); if(!cipher_open_by_name(&myself->incipher, cipher)) { - logger(LOG_ERR, _("Unrecognized cipher type!")); + logger(LOG_ERR, "Unrecognized cipher type!"); return false; } @@ -314,27 +415,27 @@ bool setup_myself(void) { /* Check if we want to use message authentication codes... */ - if(!get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest)) - digest = xstrdup("sha256"); + if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) + digest = xstrdup("sha1"); int maclength = 4; - get_config_int(lookup_config(myself->connection->config_tree, "MACLength"), &maclength); + get_config_int(lookup_config(config_tree, "MACLength"), &maclength); if(maclength < 0) { - logger(LOG_ERR, _("Bogus MAC length!")); + logger(LOG_ERR, "Bogus MAC length!"); return false; } if(!digest_open_by_name(&myself->indigest, digest, maclength)) { - logger(LOG_ERR, _("Unrecognized digest type!")); + logger(LOG_ERR, "Unrecognized digest type!"); return false; } /* Compression */ - if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"), &myself->incompression)) { + if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) { if(myself->incompression < 0 || myself->incompression > 11) { - logger(LOG_ERR, _("Bogus compression level!")); + logger(LOG_ERR, "Bogus compression level!"); return false; } } else @@ -351,17 +452,22 @@ bool setup_myself(void) { graph(); + if(strictsubnets) + load_all_subnets(); + /* Open device */ if(!setup_device()) return false; - event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL); + if(device_fd >= 0) { + event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL); - if (event_add(&device_ev, NULL) < 0) { - logger(LOG_ERR, _("event_add failed: %s"), strerror(errno)); - close_device(); - return false; + if (event_add(&device_ev, NULL) < 0) { + logger(LOG_ERR, "event_add failed: %s", strerror(errno)); + close_device(); + return false; + } } /* Run tinc-up script to further initialize the tap interface */ @@ -373,7 +479,7 @@ bool setup_myself(void) { execute_script("tinc-up", envp); - for(i = 0; i < 5; i++) + for(i = 0; i < 4; i++) free(envp[i]); /* Run subnet-up scripts for our own subnets */ @@ -392,7 +498,7 @@ bool setup_myself(void) { err = getaddrinfo(address, myport, &hint, &ai); if(err || !ai) { - logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", + logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", gai_strerror(err)); return false; } @@ -419,7 +525,7 @@ bool setup_myself(void) { EV_READ|EV_PERSIST, handle_new_meta_connection, NULL); if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) { - logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno)); + logger(LOG_ERR, "event_add failed: %s", strerror(errno)); abort(); } @@ -428,13 +534,13 @@ bool setup_myself(void) { EV_READ|EV_PERSIST, handle_incoming_vpn_data, NULL); if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) { - logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno)); + logger(LOG_ERR, "event_add failed: %s", strerror(errno)); abort(); } ifdebug(CONNECTIONS) { hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr); - logger(LOG_NOTICE, _("Listening on %s"), hostname); + logger(LOG_NOTICE, "Listening on %s", hostname); free(hostname); } @@ -442,7 +548,7 @@ bool setup_myself(void) { listen_sockets++; if(listen_sockets >= MAXSOCKETS) { - logger(LOG_WARNING, _("Maximum of %d listening sockets reached"), MAXSOCKETS); + logger(LOG_WARNING, "Maximum of %d listening sockets reached", MAXSOCKETS); break; } } @@ -450,9 +556,9 @@ bool setup_myself(void) { freeaddrinfo(ai); if(listen_sockets) - logger(LOG_NOTICE, _("Ready")); + logger(LOG_NOTICE, "Ready"); else { - logger(LOG_ERR, _("Unable to create any listening socket!")); + logger(LOG_ERR, "Unable to create any listening socket!"); return false; } @@ -462,10 +568,7 @@ bool setup_myself(void) { /* initialize network */ -bool setup_network(void) -{ - cp(); - +bool setup_network(void) { init_connections(); init_subnets(); init_nodes(); @@ -502,8 +605,6 @@ void close_network_connections(void) { char *envp[5]; int i; - cp(); - for(node = connection_tree->head; node; node = next) { next = node->next; c = node->data;