X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnet_setup.c;h=2cc7ddf55a46c5555cd5a93ba0ecf54e1e214705;hb=ae098a93ff90b51b591cd371bef2a5813d8d41f0;hp=35b301d828f9eb672defd4461eb30bc5f8b385f4;hpb=1564f52f7643c554ec49a3e014bc9b9a8745c856;p=meshlink diff --git a/src/net_setup.c b/src/net_setup.c index 35b301d8..2cc7ddf5 100644 --- a/src/net_setup.c +++ b/src/net_setup.c @@ -1,9 +1,6 @@ /* net_setup.c -- Setup. - Copyright (C) 1998-2005 Ivo Timmermans, - 2000-2014 Guus Sliepen - 2006 Scott Lamb - 2010 Brandon Black + Copyright (C) 2014 Guus Sliepen 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 @@ -33,7 +30,6 @@ #include "netutl.h" #include "protocol.h" #include "route.h" -#include "rsa.h" #include "utils.h" #include "xalloc.h" @@ -52,8 +48,6 @@ bool node_read_ecdsa_public_key(node_t *n) { return true; splay_tree_t *config_tree; - FILE *fp; - char *pubname = NULL; char *p; init_configuration(&config_tree); @@ -65,25 +59,10 @@ bool node_read_ecdsa_public_key(node_t *n) { if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) { n->ecdsa = ecdsa_set_base64_public_key(p); free(p); - goto exit; } - /* Else, check for ECDSAPublicKeyFile statement and read it */ - - if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname)) - xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name); - - fp = fopen(pubname, "r"); - - if(!fp) - goto exit; - - n->ecdsa = ecdsa_read_pem_public_key(fp); - fclose(fp); - exit: exit_configuration(&config_tree); - free(pubname); return n->ecdsa; } @@ -91,8 +70,6 @@ bool read_ecdsa_public_key(connection_t *c) { if(ecdsa_active(c->ecdsa)) return true; - FILE *fp; - char *fname; char *p; if(!c->config_tree) { @@ -109,105 +86,28 @@ bool read_ecdsa_public_key(connection_t *c) { return c->ecdsa; } - /* Else, check for ECDSAPublicKeyFile statement and read it */ - - if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname)) - xasprintf(&fname, "%s" SLASH "hosts" SLASH "%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; - } - - c->ecdsa = ecdsa_read_pem_public_key(fp); - fclose(fp); - - if(!c->ecdsa) - logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname); - free(fname); - return c->ecdsa; -} - -bool read_rsa_public_key(connection_t *c) { - if(ecdsa_active(c->ecdsa)) - return true; - - FILE *fp; - char *fname; - char *n; - - /* First, check for simple PublicKey statement */ - - if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) { - c->rsa = rsa_set_hex_public_key(n, "FFFF"); - free(n); - return c->rsa; - } - - /* Else, check for PublicKeyFile statement and read it */ - - if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) - xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name); - - fp = fopen(fname, "r"); - - if(!fp) { - logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno)); - free(fname); - return false; - } - - c->rsa = rsa_read_pem_public_key(fp); - fclose(fp); - - if(!c->rsa) - logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno)); - free(fname); - return c->rsa; + return false; } static bool read_ecdsa_private_key(void) { FILE *fp; char *fname; - /* Check for PrivateKeyFile statement and read it */ - - if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname)) - xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase); - + xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase); fp = fopen(fname, "r"); + free(fname); if(!fp) { - logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno)); - if(errno == ENOENT) - logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc generate-ecdsa-keys'."); - free(fname); + logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file: %s", strerror(errno)); 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 - myself->connection->ecdsa = ecdsa_read_pem_private_key(fp); fclose(fp); if(!myself->connection->ecdsa) - logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno)); - free(fname); + logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file failed: %s", strerror(errno)); + return myself->connection->ecdsa; } @@ -235,61 +135,6 @@ static bool read_invitation_key(void) { return invitation_key; } -static bool read_rsa_private_key(void) { - FILE *fp; - char *fname; - char *n, *d; - - /* First, check for simple PrivateKey statement */ - - if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) { - if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) { - logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!"); - free(d); - return false; - } - myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d); - free(n); - free(d); - return myself->connection->rsa; - } - - /* Else, check for PrivateKeyFile statement and read it */ - - if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname)) - xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase); - - fp = fopen(fname, "r"); - - if(!fp) { - logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA 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 RSA 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 RSA private key file `%s'!", fname); -#endif - - myself->connection->rsa = rsa_read_pem_private_key(fp); - fclose(fp); - - if(!myself->connection->rsa) - logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno)); - free(fname); - return myself->connection->rsa; -} - static timeout_t keyexpire_timeout; static void keyexpire_handler(void *data) { @@ -340,225 +185,21 @@ char *get_name(void) { if(!name) return NULL; - if(*name == '$') { - char *envname = getenv(name + 1); - char hostname[32] = ""; - if(!envname) { - if(strcmp(name + 1, "HOST")) { - logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1); - return false; - } - if(gethostname(hostname, sizeof hostname) || !*hostname) { - logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno)); - return false; - } - hostname[31] = 0; - envname = hostname; - } - free(name); - name = xstrdup(envname); - for(char *c = name; *c; c++) - if(!isalnum(*c)) - *c = '_'; - } - if(!check_id(name)) { logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!"); free(name); - return false; + return NULL; } return name; } bool setup_myself_reloadable(void) { - char *proxy = NULL; - char *rmode = NULL; - char *fmode = NULL; - char *bmode = NULL; - char *afname = NULL; - char *address = NULL; - char *space; - bool choice; - - get_config_string(lookup_config(config_tree, "Proxy"), &proxy); - if(proxy) { - if((space = strchr(proxy, ' '))) - *space++ = 0; - - if(!strcasecmp(proxy, "none")) { - proxytype = PROXY_NONE; - } else if(!strcasecmp(proxy, "socks4")) { - proxytype = PROXY_SOCKS4; - } else if(!strcasecmp(proxy, "socks4a")) { - proxytype = PROXY_SOCKS4A; - } else if(!strcasecmp(proxy, "socks5")) { - proxytype = PROXY_SOCKS5; - } else if(!strcasecmp(proxy, "http")) { - proxytype = PROXY_HTTP; - } else if(!strcasecmp(proxy, "exec")) { - proxytype = PROXY_EXEC; - } else { - logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy); - return false; - } - - switch(proxytype) { - case PROXY_NONE: - default: - break; - - case PROXY_EXEC: - if(!space || !*space) { - logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!"); - return false; - } - proxyhost = xstrdup(space); - break; - - case PROXY_SOCKS4: - case PROXY_SOCKS4A: - case PROXY_SOCKS5: - case PROXY_HTTP: - proxyhost = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxyport = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxyuser = space; - if(space && (space = strchr(space, ' '))) - *space++ = 0, proxypass = space; - if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) { - logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!"); - return false; - } - proxyhost = xstrdup(proxyhost); - proxyport = xstrdup(proxyport); - if(proxyuser && *proxyuser) - proxyuser = xstrdup(proxyuser); - if(proxypass && *proxypass) - proxypass = xstrdup(proxypass); - break; - } - - free(proxy); - } - - if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice) - myself->options |= OPTION_INDIRECT; - - if(get_config_bool(lookup_config(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, "LocalDiscovery"), &localdiscovery); - - memset(&localdiscovery_address, 0, sizeof localdiscovery_address); - if(get_config_string(lookup_config(config_tree, "LocalDiscoveryAddress"), &address)) { - struct addrinfo *ai = str2addrinfo(address, myport, SOCK_DGRAM); - free(address); - if(!ai) - return false; - memcpy(&localdiscovery_address, ai->ai_addr, ai->ai_addrlen); - } - - - if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) { - if(!strcasecmp(rmode, "router")) - routing_mode = RMODE_ROUTER; - else if(!strcasecmp(rmode, "switch")) - routing_mode = RMODE_SWITCH; - else if(!strcasecmp(rmode, "hub")) - routing_mode = RMODE_HUB; - else { - logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!"); - return false; - } - free(rmode); - } - - if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) { - if(!strcasecmp(fmode, "off")) - forwarding_mode = FMODE_OFF; - else if(!strcasecmp(fmode, "internal")) - forwarding_mode = FMODE_INTERNAL; - else if(!strcasecmp(fmode, "kernel")) - forwarding_mode = FMODE_KERNEL; - else { - logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!"); - return false; - } - free(fmode); - } - - 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); - get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl); - if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) { - if(!strcasecmp(bmode, "no")) - broadcast_mode = BMODE_NONE; - else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst")) - broadcast_mode = BMODE_MST; - else if(!strcasecmp(bmode, "direct")) - broadcast_mode = BMODE_DIRECT; - else { - logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!"); - return false; - } - free(bmode); - } - -#if !defined(SOL_IP) || !defined(IP_TOS) - if(priorityinheritance) - logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance"); -#endif - - if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire)) - macexpire = 600; - - if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) { - if(maxtimeout <= 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!"); - return false; - } - } else - maxtimeout = 900; - - if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) { - if(!strcasecmp(afname, "IPv4")) - addressfamily = AF_INET; - else if(!strcasecmp(afname, "IPv6")) - addressfamily = AF_INET6; - else if(!strcasecmp(afname, "any")) - addressfamily = AF_UNSPEC; - else { - logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!"); - return false; - } - free(afname); - } - - get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames); - - if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime)) - keylifetime = 3600; - - get_config_int(lookup_config(config_tree, "AutoConnect"), &autoconnect); - if(autoconnect < 0) - autoconnect = 0; - - get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers); + localdiscovery = true; + keylifetime = 3600; // TODO: check if this can be removed as well + maxtimeout = 900; + autoconnect = 3; + myself->options |= OPTION_PMTU_DISCOVERY; read_invitation_key(); @@ -674,16 +315,7 @@ bool setup_myself(void) { myself->options |= PROT_MINOR << 24; - if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) { - experimental = read_ecdsa_private_key(); - if(!experimental) - logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled."); - } else { - if(experimental && !read_ecdsa_private_key()) - return false; - } - - if(!read_rsa_private_key()) + if(!read_ecdsa_private_key()) return false; /* Ensure myport is numeric */ @@ -703,87 +335,13 @@ bool setup_myself(void) { if(!setup_myself_reloadable()) return false; - get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver); - - if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) { - if(max_connection_burst <= 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!"); - return false; - } - } - - if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) { - if(udp_rcvbuf <= 0) { - 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(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!"); - return false; - } - } - - int replaywin_int; - if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) { - if(replaywin_int < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!"); - return false; - } - replaywin = (unsigned)replaywin_int; - sptps_replaywin = replaywin; - } - - /* Generate packet encryption key */ - - if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher)) - cipher = xstrdup("blowfish"); - - if(!strcasecmp(cipher, "none")) { - myself->incipher = NULL; - } else if(!(myself->incipher = cipher_open_by_name(cipher))) { - logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!"); - return false; - } - - free(cipher); - + // TODO: check whether this is used at all timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000}); - /* Check if we want to use message authentication codes... */ - - int maclength = 4; - get_config_int(lookup_config(config_tree, "MACLength"), &maclength); - - if(maclength < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!"); - return false; - } - - if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) - digest = xstrdup("sha1"); - - if(!strcasecmp(digest, "none")) { - myself->indigest = NULL; - } else if(!(myself->indigest = digest_open_by_name(digest, maclength))) { - logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!"); - return false; - } - - free(digest); - /* Compression */ - if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) { - if(myself->incompression < 0 || myself->incompression > 11) { - logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!"); - return false; - } - } else - myself->incompression = 0; - + // TODO: drop compression in the packet layer? + myself->incompression = 0; myself->connection->outcompression = 0; /* Done */ @@ -792,7 +350,6 @@ bool setup_myself(void) { myself->via = myself; myself->status.reachable = true; myself->last_state_change = now.tv_sec; - myself->status.sptps = experimental; node_add(myself); graph(); @@ -805,41 +362,18 @@ bool setup_myself(void) { listen_sockets = 0; int cfgs = 0; - for(config_t *cfg = lookup_config(config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) { - cfgs++; - get_config_string(cfg, &address); - if(!add_listen_address(address, true)) - return false; - } - - for(config_t *cfg = lookup_config(config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) { - cfgs++; - get_config_string(cfg, &address); - if(!add_listen_address(address, false)) - return false; - } - - if(!cfgs) - if(!add_listen_address(address, NULL)) - return false; + if(!add_listen_address(address, NULL)) + return false; if(!listen_sockets) { logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!"); return false; } - /* If no Port option was specified, set myport to the port used by the first listening socket. */ + // TODO: require Port to be set? Or use "0" and use getsockname()? - if(!port_specified) { - sockaddr_t sa; - socklen_t salen = sizeof sa; - if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) { - free(myport); - sockaddr2str(&sa, NULL, &myport); - if(!myport) - myport = xstrdup("655"); - } - } + if(!myport) + myport = xstrdup("655"); xasprintf(&myself->hostname, "MYSELF port %s", myport); myself->connection->hostname = xstrdup(myself->hostname); @@ -860,20 +394,9 @@ bool setup_network(void) { init_edges(); init_requests(); - if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) { - if(pinginterval < 1) { - pinginterval = 86400; - } - } else - pinginterval = 60; - - if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout)) - pingtimeout = 5; - if(pingtimeout < 1 || pingtimeout > pinginterval) - pingtimeout = pinginterval; - - if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) - maxoutbufsize = 10 * MTU; + pinginterval = 60; + pingtimeout = 5; + maxoutbufsize = 10 * MTU; if(!setup_myself()) return false;