X-Git-Url: https://www.tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fnet_setup.c;h=6157993cccd3deabdf7eee7aafbfb5b9e5ae3ea8;hb=51bddfd4dd95161afae2cac4aa5d31970fef5714;hp=c5c83e7b0295de546482628498d6daf1a71f8f47;hpb=6bc5d626a8726fc23365ee705761a3c666a08ad4;p=tinc diff --git a/src/net_setup.c b/src/net_setup.c index c5c83e7b..6157993c 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, - 2000-2012 Guus Sliepen + 2000-2013 Guus Sliepen 2006 Scott Lamb 2010 Brandon Black @@ -31,12 +31,14 @@ #include "ecdsa.h" #include "graph.h" #include "logger.h" +#include "names.h" #include "net.h" #include "netutl.h" #include "process.h" #include "protocol.h" #include "route.h" #include "rsa.h" +#include "script.h" #include "subnet.h" #include "utils.h" #include "xalloc.h" @@ -51,30 +53,28 @@ char *proxyuser; char *proxypass; proxytype_t proxytype; int autoconnect; +bool disablebuggypeers; char *scriptinterpreter; char *scriptextension; bool node_read_ecdsa_public_key(node_t *n) { - if(ecdsa_active(&n->ecdsa)) + if(ecdsa_active(n->ecdsa)) return true; splay_tree_t *config_tree; FILE *fp; - char *pubname = NULL, *hcfname = NULL; + char *pubname = NULL; char *p; - bool result = false; - - xasprintf(&hcfname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name); init_configuration(&config_tree); - if(!read_config_file(config_tree, hcfname)) + if(!read_host_config(config_tree, n->name)) 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); + n->ecdsa = ecdsa_set_base64_public_key(p); free(p); goto exit; } @@ -91,28 +91,35 @@ bool node_read_ecdsa_public_key(node_t *n) { goto exit; } - result = ecdsa_read_pem_public_key(&n->ecdsa, fp); + n->ecdsa = ecdsa_read_pem_public_key(fp); fclose(fp); exit: exit_configuration(&config_tree); - free(hcfname); free(pubname); - return result; + return n->ecdsa; } bool read_ecdsa_public_key(connection_t *c) { + if(ecdsa_active(c->ecdsa)) + return true; + FILE *fp; char *fname; char *p; - bool result; + + if(!c->config_tree) { + init_configuration(&c->config_tree); + if(!read_host_config(c->config_tree, c->name)) + return false; + } /* 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); + c->ecdsa = ecdsa_set_base64_public_key(p); free(p); - return result; + return c->ecdsa; } /* Else, check for ECDSAPublicKeyFile statement and read it */ @@ -129,27 +136,29 @@ bool read_ecdsa_public_key(connection_t *c) { return false; } - result = ecdsa_read_pem_public_key(&c->ecdsa, fp); + c->ecdsa = ecdsa_read_pem_public_key(fp); fclose(fp); - if(!result) + if(!c->ecdsa) logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname); free(fname); - return result; + return c->ecdsa; } bool read_rsa_public_key(connection_t *c) { + if(ecdsa_active(c->ecdsa)) + return true; + FILE *fp; char *fname; char *n; - bool result; /* First, check for simple PublicKey statement */ if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) { - result = rsa_set_hex_public_key(&c->rsa, n, "FFFF"); + c->rsa = rsa_set_hex_public_key(n, "FFFF"); free(n); - return result; + return c->rsa; } /* Else, check for PublicKeyFile statement and read it */ @@ -165,19 +174,18 @@ bool read_rsa_public_key(connection_t *c) { return false; } - result = rsa_read_pem_public_key(&c->rsa, fp); + c->rsa = rsa_read_pem_public_key(fp); fclose(fp); - if(!result) + if(!c->rsa) logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno)); free(fname); - return result; + return c->rsa; } static bool read_ecdsa_private_key(void) { FILE *fp; char *fname; - bool result; /* Check for PrivateKeyFile statement and read it */ @@ -188,6 +196,8 @@ static bool read_ecdsa_private_key(void) { 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 -n %s generate-ecdsa-keys'.", netname ?: "."); free(fname); return false; } @@ -205,20 +215,43 @@ static bool read_ecdsa_private_key(void) { 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); + myself->connection->ecdsa = ecdsa_read_pem_private_key(fp); fclose(fp); - if(!result) + if(!myself->connection->ecdsa) logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno)); free(fname); - return result; + return myself->connection->ecdsa; +} + +static bool read_invitation_key(void) { + FILE *fp; + char *fname; + + if(invitation_key) { + ecdsa_free(invitation_key); + invitation_key = NULL; + } + + xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", confbase); + + fp = fopen(fname, "r"); + + if(fp) { + invitation_key = ecdsa_read_pem_private_key(fp); + fclose(fp); + if(!invitation_key) + logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno)); + } + + free(fname); + return invitation_key; } static bool read_rsa_private_key(void) { FILE *fp; char *fname; char *n, *d; - bool result; /* First, check for simple PrivateKey statement */ @@ -228,10 +261,10 @@ static bool read_rsa_private_key(void) { free(d); return false; } - result = rsa_set_hex_private_key(&myself->connection->rsa, n, "FFFF", d); + myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d); free(n); free(d); - return result; + return myself->connection->rsa; } /* Else, check for PrivateKeyFile statement and read it */ @@ -261,13 +294,13 @@ static bool read_rsa_private_key(void) { 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); + myself->connection->rsa = rsa_read_pem_private_key(fp); fclose(fp); - if(!result) + if(!myself->connection->rsa) logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno)); free(fname); - return result; + return myself->connection->rsa; } static timeout_t keyexpire_timeout; @@ -308,14 +341,10 @@ void load_all_subnets(void) { // continue; #endif - char *fname; - xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, ent->d_name); - splay_tree_t *config_tree; init_configuration(&config_tree); read_config_options(config_tree, ent->d_name); - read_config_file(config_tree, fname); - free(fname); + read_host_config(config_tree, ent->d_name); if(!n) { n = new_node(); @@ -382,17 +411,18 @@ char *get_name(void) { 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; } - char envname[32]; - if(gethostname(envname, 32)) { + if(gethostname(hostname, sizeof hostname) || !*hostname) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno)); return false; } - envname[31] = 0; + hostname[31] = 0; + envname = hostname; } free(name); name = xstrdup(envname); @@ -416,6 +446,7 @@ bool setup_myself_reloadable(void) { char *fmode = NULL; char *bmode = NULL; char *afname = NULL; + char *address = NULL; char *space; bool choice; @@ -426,11 +457,7 @@ bool setup_myself_reloadable(void) { free(scriptextension); if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension)) -#ifdef HAVE_MINGW - scriptextension = xstrdup(".bat"); -#else scriptextension = xstrdup(""); -#endif get_config_string(lookup_config(config_tree, "Proxy"), &proxy); if(proxy) { @@ -506,6 +533,16 @@ bool setup_myself_reloadable(void) { 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; @@ -596,6 +633,12 @@ bool setup_myself_reloadable(void) { 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); + + read_invitation_key(); return true; } @@ -605,7 +648,6 @@ bool setup_myself_reloadable(void) { */ static bool setup_myself(void) { char *name, *hostname, *cipher, *digest, *type; - char *fname = NULL; char *address = NULL; if(!(name = get_name())) { @@ -617,10 +659,7 @@ static bool setup_myself(void) { myself->connection = new_connection(); myself->name = name; myself->connection->name = xstrdup(name); - xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, name); - read_config_options(config_tree, name); - read_config_file(config_tree, fname); - free(fname); + read_host_config(config_tree, name); if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) myport = xstrdup("655"); @@ -672,7 +711,12 @@ static bool setup_myself(void) { get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver); strictsubnets |= 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) { @@ -703,14 +747,15 @@ static bool setup_myself(void) { if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher)) cipher = xstrdup("blowfish"); - if(!cipher_open_by_name(&myself->incipher, cipher)) { + 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); - send_key_changed(); timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000}); /* Check if we want to use message authentication codes... */ @@ -726,7 +771,9 @@ static bool setup_myself(void) { if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) digest = xstrdup("sha1"); - if(!digest_open_by_name(&myself->indigest, digest, maclength)) { + 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; } @@ -750,7 +797,7 @@ static bool setup_myself(void) { myself->nexthop = myself; myself->via = myself; myself->status.reachable = true; - myself->last_state_change = time(NULL); + myself->last_state_change = now.tv_sec; myself->status.sptps = experimental; node_add(myself); @@ -788,23 +835,6 @@ static bool setup_myself(void) { if(device_fd >= 0) io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ); - /* Run tinc-up script to further initialize the tap interface */ - char *envp[5]; - xasprintf(&envp[0], "NETNAME=%s", netname ? : ""); - xasprintf(&envp[1], "DEVICE=%s", device ? : ""); - xasprintf(&envp[2], "INTERFACE=%s", iface ? : ""); - xasprintf(&envp[3], "NAME=%s", myself->name); - envp[4] = NULL; - - execute_script("tinc-up", envp); - - for(int i = 0; i < 4; i++) - free(envp[i]); - - /* Run subnet-up scripts for our own subnets */ - - subnet_update(myself, NULL, true); - /* Open sockets */ if(!do_detach && getenv("LISTEN_FDS")) { @@ -879,8 +909,7 @@ static bool setup_myself(void) { free(address); if(err || !ai) { - logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", - gai_strerror(err)); + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err)); return false; } @@ -919,14 +948,12 @@ static bool setup_myself(void) { } while(cfg); } - if(listen_sockets) - logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready"); - else { + if(!listen_sockets) { logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!"); return false; } - last_config_check = time(NULL); + last_config_check = now.tv_sec; return true; } @@ -959,6 +986,26 @@ bool setup_network(void) { if(!setup_myself()) return false; + if(!init_control()) + return false; + + /* Run tinc-up script to further initialize the tap interface */ + + char *envp[5] = {NULL}; + xasprintf(&envp[0], "NETNAME=%s", netname ? : ""); + xasprintf(&envp[1], "DEVICE=%s", device ? : ""); + xasprintf(&envp[2], "INTERFACE=%s", iface ? : ""); + xasprintf(&envp[3], "NAME=%s", myself->name); + + execute_script("tinc-up", envp); + + for(int i = 0; i < 4; i++) + free(envp[i]); + + /* Run subnet-up scripts for our own subnets */ + + subnet_update(myself, NULL, true); + return true; } @@ -991,12 +1038,11 @@ void close_network_connections(void) { close(listen_socket[i].udp.fd); } - char *envp[5]; + char *envp[5] = {NULL}; xasprintf(&envp[0], "NETNAME=%s", netname ? : ""); xasprintf(&envp[1], "DEVICE=%s", device ? : ""); xasprintf(&envp[2], "INTERFACE=%s", iface ? : ""); xasprintf(&envp[3], "NAME=%s", myself->name); - envp[4] = NULL; exit_requests(); exit_edges(); @@ -1013,5 +1059,7 @@ void close_network_connections(void) { devops.close(); + exit_control(); + return; }