X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnet_setup.c;h=c181df9472e78c07f0e1ea6efae2d27259d9d574;hb=86c2990327fdf7ec1197aa73cb2b9a926a734db4;hp=9d20fd577e5116ec13946372172281c95f68cbf2;hpb=d772289f6d6adfb8932658b533349d43f08ec326;p=meshlink diff --git a/src/net_setup.c b/src/net_setup.c index 9d20fd57..c181df94 100644 --- a/src/net_setup.c +++ b/src/net_setup.c @@ -1,7 +1,7 @@ /* net_setup.c -- Setup. Copyright (C) 1998-2005 Ivo Timmermans, - 2000-2010 Guus Sliepen + 2000-2012 Guus Sliepen 2006 Scott Lamb 2010 Brandon Black @@ -29,6 +29,7 @@ #include "control.h" #include "device.h" #include "digest.h" +#include "ecdsa.h" #include "graph.h" #include "logger.h" #include "net.h" @@ -43,6 +44,91 @@ char *myport; static struct event device_ev; +devops_t devops; + +bool node_read_ecdsa_public_key(node_t *n) { + if(ecdsa_active(&n->ecdsa)) + return true; + + splay_tree_t *config_tree; + FILE *fp; + char *fname; + char *p; + bool result = false; + + xasprintf(&fname, "%s/hosts/%s", confbase, n->name); + + init_configuration(&config_tree); + if(!read_config_file(config_tree, fname)) + goto exit; + + /* First, check for simple ECDSAPublicKey statement */ + + if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) { + result = ecdsa_set_base64_public_key(&n->ecdsa, p); + free(p); + goto exit; + } + + /* Else, check for ECDSAPublicKeyFile statement and read it */ + + free(fname); + + if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &fname)) + xasprintf(&fname, "%s/hosts/%s", confbase, n->name); + + fp = fopen(fname, "r"); + + if(!fp) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", fname, strerror(errno)); + goto exit; + } + + result = ecdsa_read_pem_public_key(&n->ecdsa, fp); + fclose(fp); + +exit: + exit_configuration(&config_tree); + free(fname); + return result; +} + +bool read_ecdsa_public_key(connection_t *c) { + FILE *fp; + char *fname; + char *p; + bool result; + + /* First, check for simple ECDSAPublicKey statement */ + + if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) { + result = ecdsa_set_base64_public_key(&c->ecdsa, p); + free(p); + return result; + } + + /* Else, check for ECDSAPublicKeyFile statement and read it */ + + if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname)) + xasprintf(&fname, "%s/hosts/%s", confbase, c->name); + + fp = fopen(fname, "r"); + + if(!fp) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", + fname, strerror(errno)); + free(fname); + return false; + } + + result = ecdsa_read_pem_public_key(&c->ecdsa, fp); + fclose(fp); + + if(!result) + logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA public key file `%s' failed: %s", fname, strerror(errno)); + free(fname); + return result; +} bool read_rsa_public_key(connection_t *c) { FILE *fp; @@ -66,8 +152,7 @@ bool read_rsa_public_key(connection_t *c) { fp = fopen(fname, "r"); if(!fp) { - logger(LOG_ERR, "Error reading RSA public key file `%s': %s", - fname, strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno)); free(fname); return false; } @@ -76,7 +161,47 @@ 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(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno)); + free(fname); + return result; +} + +static bool read_ecdsa_private_key(void) { + FILE *fp; + char *fname; + bool result; + + /* Check for PrivateKeyFile statement and read it */ + + if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname)) + xasprintf(&fname, "%s/ecdsa_key.priv", confbase); + + fp = fopen(fname, "r"); + + if(!fp) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno)); + free(fname); + return false; + } + +#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN) + struct stat s; + + if(fstat(fileno(fp), &s)) { + logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno)); + free(fname); + return false; + } + + if(s.st_mode & ~0100700) + logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname); +#endif + + result = ecdsa_read_pem_private_key(&myself->connection->ecdsa, fp); + fclose(fp); + + if(!result) + logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno)); free(fname); return result; } @@ -91,7 +216,7 @@ static bool read_rsa_private_key(void) { if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) { if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) { - logger(LOG_ERR, "PrivateKey used but no PublicKey found!"); + logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!"); free(d); return false; } @@ -109,7 +234,7 @@ static bool read_rsa_private_key(void) { fp = fopen(fname, "r"); if(!fp) { - logger(LOG_ERR, "Error reading RSA private key file `%s': %s", + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s", fname, strerror(errno)); free(fname); return false; @@ -119,20 +244,20 @@ static bool read_rsa_private_key(void) { struct stat s; if(fstat(fileno(fp), &s)) { - logger(LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno)); + logger(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno)); free(fname); return result; } @@ -143,9 +268,9 @@ static void keyexpire_handler(int fd, short events, void *data) { regenerate_key(); } -void regenerate_key() { +void regenerate_key(void) { if(timeout_initialized(&keyexpire_event)) { - ifdebug(STATUS) logger(LOG_INFO, "Expiring symmetric keys"); + logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys"); event_del(&keyexpire_event); send_key_changed(); } else { @@ -167,12 +292,11 @@ void load_all_subnets(void) { 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)); + logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno)); free(dname); return; } @@ -189,10 +313,9 @@ void load_all_subnets(void) { xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name); init_configuration(&config_tree); - result = read_config_file(config_tree, fname); + read_config_options(config_tree, ent->d_name); + read_config_file(config_tree, fname); free(fname); - if(!result) - continue; if(!n) { n = new_node(); @@ -223,7 +346,7 @@ void load_all_subnets(void) { static bool setup_myself(void) { config_t *cfg; subnet_t *subnet; - char *name, *hostname, *mode, *afname, *cipher, *digest; + char *name, *hostname, *mode, *afname, *cipher, *digest, *type; char *fname = NULL; char *address = NULL; char *envp[5]; @@ -239,15 +362,16 @@ static bool setup_myself(void) { myself->connection->hostname = xstrdup("MYSELF"); myself->connection->options = 0; - myself->connection->protocol_version = PROT_CURRENT; + myself->connection->protocol_major = PROT_MAJOR; + myself->connection->protocol_minor = PROT_MINOR; if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */ - logger(LOG_ERR, "Name for tinc daemon required!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!"); return false; } if(!check_id(name)) { - logger(LOG_ERR, "Invalid name for myself!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!"); free(name); return false; } @@ -259,6 +383,11 @@ static bool setup_myself(void) { read_config_file(config_tree, fname); free(fname); + get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental); + + if(experimental && !read_ecdsa_private_key()) + return false; + if(!read_rsa_private_key()) return false; @@ -302,6 +431,7 @@ static bool setup_myself(void) { 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); + get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery); strictsubnets |= tunnelserver; if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) { @@ -312,7 +442,7 @@ static bool setup_myself(void) { else if(!strcasecmp(mode, "hub")) routing_mode = RMODE_HUB; else { - logger(LOG_ERR, "Invalid routing mode!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!"); return false; } free(mode); @@ -326,7 +456,7 @@ static bool setup_myself(void) { else if(!strcasecmp(mode, "kernel")) forwarding_mode = FMODE_KERNEL; else { - logger(LOG_ERR, "Invalid forwarding mode!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!"); return false; } free(mode); @@ -343,10 +473,12 @@ static bool setup_myself(void) { myself->options |= OPTION_CLAMP_MSS; get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance); + get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl); + get_config_bool(lookup_config(config_tree, "Broadcast"), &broadcast); #if !defined(SOL_IP) || !defined(IP_TOS) if(priorityinheritance) - logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance"); + logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance"); #endif if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire)) @@ -354,7 +486,7 @@ static bool setup_myself(void) { if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) { if(maxtimeout <= 0) { - logger(LOG_ERR, "Bogus maximum timeout!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!"); return false; } } else @@ -362,21 +494,21 @@ static bool setup_myself(void) { if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) { if(udp_rcvbuf <= 0) { - logger(LOG_ERR, "UDPRcvBuf cannot be negative!"); + logger(DEBUG_ALWAYS, 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!"); + logger(DEBUG_ALWAYS, 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!"); + logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!"); return false; } replaywin = (unsigned)replaywin_int; @@ -390,7 +522,7 @@ static bool setup_myself(void) { else if(!strcasecmp(afname, "any")) addressfamily = AF_UNSPEC; else { - logger(LOG_ERR, "Invalid address family!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!"); return false; } free(afname); @@ -404,7 +536,7 @@ static bool setup_myself(void) { cipher = xstrdup("blowfish"); if(!cipher_open_by_name(&myself->incipher, cipher)) { - logger(LOG_ERR, "Unrecognized cipher type!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!"); return false; } @@ -415,19 +547,19 @@ static bool setup_myself(void) { /* Check if we want to use message authentication codes... */ - if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) - digest = xstrdup("sha1"); - int maclength = 4; get_config_int(lookup_config(config_tree, "MACLength"), &maclength); if(maclength < 0) { - logger(LOG_ERR, "Bogus MAC length!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!"); return false; } + if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) + digest = xstrdup("sha1"); + if(!digest_open_by_name(&myself->indigest, digest, maclength)) { - logger(LOG_ERR, "Unrecognized digest type!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!"); return false; } @@ -435,7 +567,7 @@ static bool setup_myself(void) { 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(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!"); return false; } } else @@ -457,15 +589,34 @@ static bool setup_myself(void) { /* Open device */ - if(!setup_device()) + devops = os_devops; + + if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { + if(!strcasecmp(type, "dummy")) + devops = dummy_devops; + else if(!strcasecmp(type, "raw_socket")) + devops = raw_socket_devops; + else if(!strcasecmp(type, "multicast")) + devops = multicast_devops; +#ifdef ENABLE_UML + else if(!strcasecmp(type, "uml")) + devops = uml_devops; +#endif +#ifdef ENABLE_VDE + else if(!strcasecmp(type, "vde")) + devops = vde_devops; +#endif + } + + if(!devops.setup()) return false; 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(); + logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno)); + devops.close(); return false; } } @@ -488,77 +639,96 @@ static bool setup_myself(void) { /* Open sockets */ - get_config_string(lookup_config(config_tree, "BindToAddress"), &address); - - hint.ai_family = addressfamily; - hint.ai_socktype = SOCK_STREAM; - hint.ai_protocol = IPPROTO_TCP; - hint.ai_flags = AI_PASSIVE; + listen_sockets = 0; + cfg = lookup_config(config_tree, "BindToAddress"); - err = getaddrinfo(address, myport, &hint, &ai); + do { + get_config_string(cfg, &address); + if(cfg) + cfg = lookup_config_next(config_tree, cfg); - if(err || !ai) { - logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", - gai_strerror(err)); - return false; - } + char *port = myport; - listen_sockets = 0; + if(address) { + char *space = strchr(address, ' '); + if(space) { + *space++ = 0; + port = space; + } - for(aip = ai; aip; aip = aip->ai_next) { - listen_socket[listen_sockets].tcp = - setup_listen_socket((sockaddr_t *) aip->ai_addr); + if(!strcmp(address, "*")) + *address = 0; + } - if(listen_socket[listen_sockets].tcp < 0) - continue; + hint.ai_family = addressfamily; + hint.ai_socktype = SOCK_STREAM; + hint.ai_protocol = IPPROTO_TCP; + hint.ai_flags = AI_PASSIVE; - listen_socket[listen_sockets].udp = - setup_vpn_in_socket((sockaddr_t *) aip->ai_addr); + err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai); + free(address); - if(listen_socket[listen_sockets].udp < 0) { - close(listen_socket[listen_sockets].tcp); - continue; + if(err || !ai) { + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", + gai_strerror(err)); + return false; } - event_set(&listen_socket[listen_sockets].ev_tcp, - listen_socket[listen_sockets].tcp, - EV_READ|EV_PERSIST, - handle_new_meta_connection, NULL); - if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) { - logger(LOG_ERR, "event_add failed: %s", strerror(errno)); - abort(); - } + for(aip = ai; aip; aip = aip->ai_next) { + if(listen_sockets >= MAXSOCKETS) { + logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets"); + return false; + } - event_set(&listen_socket[listen_sockets].ev_udp, - listen_socket[listen_sockets].udp, - EV_READ|EV_PERSIST, - handle_incoming_vpn_data, NULL); - if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) { - logger(LOG_ERR, "event_add failed: %s", strerror(errno)); - abort(); - } + listen_socket[listen_sockets].tcp = + setup_listen_socket((sockaddr_t *) aip->ai_addr); - ifdebug(CONNECTIONS) { - hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr); - logger(LOG_NOTICE, "Listening on %s", hostname); - free(hostname); - } + if(listen_socket[listen_sockets].tcp < 0) + continue; + + listen_socket[listen_sockets].udp = + setup_vpn_in_socket((sockaddr_t *) aip->ai_addr); - memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen); - listen_sockets++; + if(listen_socket[listen_sockets].udp < 0) { + close(listen_socket[listen_sockets].tcp); + continue; + } - if(listen_sockets >= MAXSOCKETS) { - logger(LOG_WARNING, "Maximum of %d listening sockets reached", MAXSOCKETS); - break; + event_set(&listen_socket[listen_sockets].ev_tcp, + listen_socket[listen_sockets].tcp, + EV_READ|EV_PERSIST, + handle_new_meta_connection, NULL); + if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno)); + abort(); + } + + event_set(&listen_socket[listen_sockets].ev_udp, + listen_socket[listen_sockets].udp, + EV_READ|EV_PERSIST, + handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets); + if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno)); + abort(); + } + + if(debug_level >= DEBUG_CONNECTIONS) { + hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr); + logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname); + free(hostname); + } + + memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen); + listen_sockets++; } - } - freeaddrinfo(ai); + freeaddrinfo(ai); + } while(cfg); if(listen_sockets) - logger(LOG_NOTICE, "Ready"); + logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready"); else { - logger(LOG_ERR, "Unable to create any listening socket!"); + logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!"); return false; } @@ -608,7 +778,7 @@ void close_network_connections(void) { for(node = connection_tree->head; node; node = next) { next = node->next; c = node->data; - c->outgoing = false; + c->outgoing = NULL; terminate_connection(c, false); } @@ -646,7 +816,7 @@ void close_network_connections(void) { for(i = 0; i < 4; i++) free(envp[i]); - close_device(); + devops.close(); return; }