X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fmeshlink.c;h=65a82c97f192f65b48fdd6a125c5d7d7c36c42b7;hb=ba799a101d57c55d4cbf602511aa24c32a5b735e;hp=3def13fdc3d89fab2917736523d5ec9268e43ca4;hpb=c6a8d235b103195d3a2ccde17168d05409d7b485;p=meshlink diff --git a/src/meshlink.c b/src/meshlink.c index 3def13fd..65a82c97 100644 --- a/src/meshlink.c +++ b/src/meshlink.c @@ -21,6 +21,8 @@ #define VAR_MULTIPLE 4 /* Multiple statements allowed */ #define VAR_OBSOLETE 8 /* Should not be used anymore */ #define VAR_SAFE 16 /* Variable is safe when accepting invitations */ +#define MAX_ADDRESS_LENGTH 45 /* Max length of an (IPv6) address */ +#define MAX_PORT_LENGTH 5 /* 0-65535 */ typedef struct { const char *name; int type; @@ -31,6 +33,7 @@ typedef struct { #include "crypto.h" #include "ecdsagen.h" +#include "logger.h" #include "meshlink_internal.h" #include "netutl.h" #include "node.h" @@ -39,12 +42,17 @@ typedef struct { #include "utils.h" #include "xalloc.h" #include "ed25519/sha512.h" +#include "discovery.h" #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif +static pthread_mutex_t global_mutex; + __thread meshlink_errno_t meshlink_errno; +meshlink_log_cb_t global_log_cb; +meshlink_log_level_t global_log_level; //TODO: this can go away completely const var_t variables[] = { @@ -113,7 +121,7 @@ const var_t variables[] = { static bool fcopy(FILE *out, const char *filename) { FILE *in = fopen(filename, "r"); if(!in) { - fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno)); + logger(NULL, MESHLINK_ERROR, "Could not open %s: %s\n", filename, strerror(errno)); return false; } @@ -191,7 +199,7 @@ static char *get_my_hostname(meshlink_handle_t* mesh) { goto done; // If that doesn't work, guess externally visible hostname - fprintf(stderr, "Trying to discover externally visible hostname...\n"); + logger(mesh, MESHLINK_DEBUG, "Trying to discover externally visible hostname...\n"); struct addrinfo *ai = str2addrinfo("meshlink.io", "80", SOCK_STREAM); struct addrinfo *aip = ai; static const char request[] = "GET http://www.meshlink.io/host.cgi HTTP/1.0\r\n\r\n"; @@ -246,7 +254,7 @@ static char *get_my_hostname(meshlink_handle_t* mesh) { fprintf(f, "\nAddress = %s\n", hostname); fclose(f); } else { - fprintf(stderr, "Could not append Address to %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not append Address to %s: %s\n", filename, strerror(errno)); } done: @@ -280,7 +288,7 @@ static char *get_line(const char **data) { const char *end = strchr(*data, '\n'); size_t len = end ? end - *data : strlen(*data); if(len >= sizeof line) { - fprintf(stderr, "Maximum line length exceeded!\n"); + logger(NULL, MESHLINK_ERROR, "Maximum line length exceeded!\n"); return NULL; } if(len && !isprint(**data)) @@ -347,42 +355,36 @@ static bool try_bind(int port) { } static int check_port(meshlink_handle_t *mesh) { - if(try_bind(655)) - return 655; - - fprintf(stderr, "Warning: could not bind to port 655.\n"); - - for(int i = 0; i < 100; i++) { + for(int i = 0; i < 1000; i++) { int port = 0x1000 + (rand() & 0x7fff); if(try_bind(port)) { char filename[PATH_MAX]; snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, mesh->name); FILE *f = fopen(filename, "a"); if(!f) { - fprintf(stderr, "Please change MeshLink's Port manually.\n"); + logger(mesh, MESHLINK_DEBUG, "Please change MeshLink's Port manually.\n"); return 0; } fprintf(f, "Port = %d\n", port); fclose(f); - fprintf(stderr, "MeshLink will instead listen on port %d.\n", port); return port; } } - fprintf(stderr, "Please change MeshLink's Port manually.\n"); + logger(mesh, MESHLINK_DEBUG, "Please change MeshLink's Port manually.\n"); return 0; } static bool finalize_join(meshlink_handle_t *mesh) { char *name = xstrdup(get_value(mesh->data, "Name")); if(!name) { - fprintf(stderr, "No Name found in invitation!\n"); + logger(mesh, MESHLINK_DEBUG, "No Name found in invitation!\n"); return false; } if(!check_id(name)) { - fprintf(stderr, "Invalid Name found in invitation: %s!\n", name); + logger(mesh, MESHLINK_DEBUG, "Invalid Name found in invitation: %s!\n", name); return false; } @@ -391,7 +393,7 @@ static bool finalize_join(meshlink_handle_t *mesh) { FILE *f = fopen(filename, "w"); if(!f) { - fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create file %s: %s\n", filename, strerror(errno)); return false; } @@ -400,7 +402,7 @@ static bool finalize_join(meshlink_handle_t *mesh) { snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name); FILE *fh = fopen(filename, "w"); if(!fh) { - fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create file %s: %s\n", filename, strerror(errno)); fclose(f); return false; } @@ -446,10 +448,10 @@ static bool finalize_join(meshlink_handle_t *mesh) { // Ignore unknown and unsafe variables if(!found) { - fprintf(stderr, "Ignoring unknown variable '%s' in invitation.\n", l); + logger(mesh, MESHLINK_DEBUG, "Ignoring unknown variable '%s' in invitation.\n", l); continue; } else if(!(variables[i].type & VAR_SAFE)) { - fprintf(stderr, "Ignoring unsafe variable '%s' in invitation.\n", l); + logger(mesh, MESHLINK_DEBUG, "Ignoring unsafe variable '%s' in invitation.\n", l); continue; } @@ -461,12 +463,12 @@ static bool finalize_join(meshlink_handle_t *mesh) { while(l && !strcasecmp(l, "Name")) { if(!check_id(value)) { - fprintf(stderr, "Invalid Name found in invitation.\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid Name found in invitation.\n"); return false; } if(!strcmp(value, name)) { - fprintf(stderr, "Secondary chunk would overwrite our own host config file.\n"); + logger(mesh, MESHLINK_DEBUG, "Secondary chunk would overwrite our own host config file.\n"); return false; } @@ -474,7 +476,7 @@ static bool finalize_join(meshlink_handle_t *mesh) { f = fopen(filename, "w"); if(!f) { - fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create file %s: %s\n", filename, strerror(errno)); return false; } @@ -517,7 +519,7 @@ static bool finalize_join(meshlink_handle_t *mesh) { mesh->self->name = xstrdup(name); mesh->self->connection->name = name; - fprintf(stderr, "Configuration stored in: %s\n", mesh->confbase); + logger(mesh, MESHLINK_DEBUG, "Configuration stored in: %s\n", mesh->confbase); load_all_nodes(mesh); @@ -555,7 +557,7 @@ static bool invitation_receive(void *handle, uint8_t type, const void *msg, uint return finalize_join(mesh); case 2: - fprintf(stderr, "Invitation succesfully accepted.\n"); + logger(mesh, MESHLINK_DEBUG, "Invitation succesfully accepted.\n"); shutdown(mesh->sock, SHUT_RDWR); mesh->success = true; break; @@ -647,14 +649,14 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { FILE *f; char pubname[PATH_MAX], privname[PATH_MAX]; - fprintf(stderr, "Generating ECDSA keypair:\n"); + logger(mesh, MESHLINK_DEBUG, "Generating ECDSA keypair:\n"); if(!(key = ecdsa_generate())) { - fprintf(stderr, "Error during key generation!\n"); + logger(mesh, MESHLINK_DEBUG, "Error during key generation!\n"); meshlink_errno = MESHLINK_EINTERNAL; return false; } else - fprintf(stderr, "Done.\n"); + logger(mesh, MESHLINK_DEBUG, "Done.\n"); snprintf(privname, sizeof privname, "%s" SLASH "ecdsa_key.priv", mesh->confbase); f = fopen(privname, "w"); @@ -669,7 +671,7 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { #endif if(!ecdsa_write_pem_private_key(key, f)) { - fprintf(stderr, "Error writing private key!\n"); + logger(mesh, MESHLINK_DEBUG, "Error writing private key!\n"); ecdsa_free(key); fclose(f); meshlink_errno = MESHLINK_EINTERNAL; @@ -698,7 +700,7 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { static bool meshlink_setup(meshlink_handle_t *mesh) { if(mkdir(mesh->confbase, 0777) && errno != EEXIST) { - fprintf(stderr, "Could not create directory %s: %s\n", mesh->confbase, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", mesh->confbase, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -707,7 +709,7 @@ static bool meshlink_setup(meshlink_handle_t *mesh) { snprintf(filename, sizeof filename, "%s" SLASH "hosts", mesh->confbase); if(mkdir(filename, 0777) && errno != EEXIST) { - fprintf(stderr, "Could not create directory %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -715,14 +717,14 @@ static bool meshlink_setup(meshlink_handle_t *mesh) { snprintf(filename, sizeof filename, "%s" SLASH "meshlink.conf", mesh->confbase); if(!access(filename, F_OK)) { - fprintf(stderr, "Configuration file %s already exists!\n", filename); + logger(mesh, MESHLINK_DEBUG, "Configuration file %s already exists!\n", filename); meshlink_errno = MESHLINK_EEXIST; return false; } FILE *f = fopen(filename, "w"); if(!f) { - fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create file %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -740,30 +742,35 @@ static bool meshlink_setup(meshlink_handle_t *mesh) { return true; } - -meshlink_handle_t *meshlink_open(const char *confbase, const char *name) { - return meshlink_open_with_size(confbase, name, sizeof(meshlink_handle_t) ); +meshlink_handle_t *meshlink_open(const char *confbase, const char *name, const char* appname, dclass_t dclass) { + return meshlink_open_with_size(confbase, name, appname, dclass, sizeof(meshlink_handle_t)); } +meshlink_handle_t *meshlink_open_with_size(const char *confbase, const char *name, const char* appname, dclass_t dclass, size_t size) { -meshlink_handle_t *meshlink_open_with_size(const char *confbase, const char *name, size_t size) { // Validate arguments provided by the application bool usingname = false; if(!confbase || !*confbase) { - fprintf(stderr, "No confbase given!\n"); + logger(NULL, MESHLINK_ERROR, "No confbase given!\n"); + meshlink_errno = MESHLINK_EINVAL; + return NULL; + } + + if(!appname || !*appname) { + logger(NULL, MESHLINK_ERROR, "No appname given!\n"); meshlink_errno = MESHLINK_EINVAL; return NULL; } if(!name || !*name) { - fprintf(stderr, "No name given!\n"); + logger(NULL, MESHLINK_ERROR, "No name given!\n"); //return NULL; } else { //check name only if there is a name != NULL if(!check_id(name)) { - fprintf(stderr, "Invalid name given!\n"); + logger(NULL, MESHLINK_ERROR, "Invalid name given!\n"); meshlink_errno = MESHLINK_EINVAL; return NULL; } else { usingname = true;} @@ -771,16 +778,14 @@ meshlink_handle_t *meshlink_open_with_size(const char *confbase, const char *nam meshlink_handle_t *mesh = xzalloc(size); mesh->confbase = xstrdup(confbase); + mesh->appname = xstrdup(appname); + mesh->dclass = dclass; if (usingname) mesh->name = xstrdup(name); - pthread_mutex_init ( &(mesh->outpacketqueue_mutex), NULL); pthread_mutex_init ( &(mesh->nodes_mutex), NULL); mesh->threadstarted = false; event_loop_init(&mesh->loop); mesh->loop.data = mesh; - // TODO: should be set by a function. - mesh->debug_level = 5; - // Check whether meshlink.conf already exists char filename[PATH_MAX]; @@ -794,7 +799,7 @@ meshlink_handle_t *meshlink_open_with_size(const char *confbase, const char *nam return NULL; } } else { - fprintf(stderr, "Cannot not read from %s: %s\n", filename, strerror(errno)); + logger(NULL, MESHLINK_ERROR, "Cannot not read from %s: %s\n", filename, strerror(errno)); meshlink_close(mesh); meshlink_errno = MESHLINK_ESTORAGE; return NULL; @@ -833,12 +838,17 @@ static void *meshlink_main_loop(void *arg) { try_outgoing_connections(mesh); + logger(mesh, MESHLINK_DEBUG, "Starting main_loop...\n"); main_loop(mesh); + logger(mesh, MESHLINK_DEBUG, "main_loop returned.\n"); return NULL; } bool meshlink_start(meshlink_handle_t *mesh) { + + logger(mesh, MESHLINK_DEBUG, "meshlink_start called\n"); + if(!mesh) { meshlink_errno = MESHLINK_EINVAL; return false; @@ -848,7 +858,7 @@ bool meshlink_start(meshlink_handle_t *mesh) { //Check that a valid name is set if(!mesh->name ) { - fprintf(stderr, "No name given!\n"); + logger(mesh, MESHLINK_DEBUG, "No name given!\n"); meshlink_errno = MESHLINK_EINVAL; return false; } @@ -856,7 +866,7 @@ bool meshlink_start(meshlink_handle_t *mesh) { // Start the main thread if(pthread_create(&mesh->thread, NULL, meshlink_main_loop, mesh) != 0) { - fprintf(stderr, "Could not start thread: %s\n", strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not start thread: %s\n", strerror(errno)); memset(&mesh->thread, 0, sizeof mesh->thread); meshlink_errno = MESHLINK_EINTERNAL; return false; @@ -864,25 +874,42 @@ bool meshlink_start(meshlink_handle_t *mesh) { mesh->threadstarted=true; + discovery_start(mesh); + return true; } void meshlink_stop(meshlink_handle_t *mesh) { + + logger(mesh, MESHLINK_DEBUG, "meshlink_stop called\n"); + if(!mesh) { meshlink_errno = MESHLINK_EINVAL; return; } - // Shut down the listening sockets to signal the main thread to shut down + // Stop discovery + discovery_stop(mesh); - for(int i = 0; i < mesh->listen_sockets; i++) { - shutdown(mesh->listen_socket[i].tcp.fd, SHUT_RDWR); - shutdown(mesh->listen_socket[i].udp.fd, SHUT_RDWR); - } + // Shut down a listening socket to signal the main thread to shut down + + listen_socket_t *s = &mesh->listen_socket[0]; + shutdown(s->tcp.fd, SHUT_RDWR); // Wait for the main thread to finish pthread_join(mesh->thread, NULL); + mesh->threadstarted = false; + + // Fix the socket + + closesocket(s->tcp.fd); + io_del(&mesh->loop, &s->tcp); + s->tcp.fd = setup_listen_socket(&s->sa); + if(s->tcp.fd < 0) + logger(mesh, MESHLINK_ERROR, "Could not repair listenen socket!"); + else + io_add(&mesh->loop, &s->tcp, handle_new_meta_connection, s, s->tcp.fd, IO_READ); } void meshlink_close(meshlink_handle_t *mesh) { @@ -895,7 +922,7 @@ void meshlink_close(meshlink_handle_t *mesh) { close_network_connections(mesh); - logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating"); + logger(mesh, MESHLINK_INFO, "Terminating"); exit_configuration(&mesh->config); event_loop_exit(&mesh->loop); @@ -908,6 +935,7 @@ void meshlink_close(meshlink_handle_t *mesh) { ecdsa_free(mesh->invitation_key); free(mesh->name); + free(mesh->appname); free(mesh->confbase); memset(mesh, 0, sizeof *mesh); @@ -934,13 +962,13 @@ void meshlink_set_node_status_cb(meshlink_handle_t *mesh, meshlink_node_status_c } void meshlink_set_log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb) { - if(!mesh) { - meshlink_errno = MESHLINK_EINVAL; - return; + if(mesh) { + mesh->log_cb = cb; + mesh->log_level = cb ? level : 0; + } else { + global_log_cb = cb; + global_log_level = cb ? level : 0; } - - mesh->log_cb = cb; - mesh->log_level = level; } bool meshlink_send(meshlink_handle_t *mesh, meshlink_node_t *destination, const void *data, size_t len) { @@ -957,19 +985,15 @@ bool meshlink_send(meshlink_handle_t *mesh, meshlink_node_t *destination, const return false; } - /* If there is no outgoing list yet, create one. */ - - if(!mesh->outpacketqueue) - mesh->outpacketqueue = list_alloc(NULL); - //add packet to the queue outpacketqueue_t *packet_in_queue = xzalloc(sizeof *packet_in_queue); packet_in_queue->destination=destination; packet_in_queue->data=data; packet_in_queue->len=len; - pthread_mutex_lock(&(mesh->outpacketqueue_mutex)); - list_insert_head(mesh->outpacketqueue,packet_in_queue); - pthread_mutex_unlock(&(mesh->outpacketqueue_mutex)); + if(!meshlink_queue_push(&mesh->outpacketqueue, packet_in_queue)) { + free(packet_in_queue); + return false; + } //notify event loop signal_trigger(&(mesh->loop),&(mesh->datafromapp)); @@ -980,10 +1004,9 @@ void meshlink_send_from_queue(event_loop_t* el,meshlink_handle_t *mesh) { vpn_packet_t packet; meshlink_packethdr_t *hdr = (meshlink_packethdr_t *)packet.data; - outpacketqueue_t* p = list_get_tail(mesh->outpacketqueue); - if (p) - list_delete_tail(mesh->outpacketqueue); - else return ; + outpacketqueue_t* p = meshlink_queue_pop(&mesh->outpacketqueue); + if(!p) + return; if (sizeof(meshlink_packethdr_t) + p->len > MAXSIZE) { //log something @@ -1124,7 +1147,7 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { snprintf(filename, sizeof filename, "%s" SLASH "invitations", mesh->confbase); if(mkdir(filename, 0700) && errno != EEXIST) { - fprintf(stderr, "Could not create directory %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1132,7 +1155,7 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { // Count the number of valid invitations, clean up old ones DIR *dir = opendir(filename); if(!dir) { - fprintf(stderr, "Could not read directory %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not read directory %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1154,13 +1177,13 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { else unlink(invname); } else { - fprintf(stderr, "Could not stat %s: %s\n", invname, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not stat %s: %s\n", invname, strerror(errno)); errno = 0; } } if(errno) { - fprintf(stderr, "Error while reading directory %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Error while reading directory %s: %s\n", filename, strerror(errno)); closedir(dir); meshlink_errno = MESHLINK_ESTORAGE; return false; @@ -1186,20 +1209,20 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { FILE *f = fopen(filename, "r"); if(!f) { if(errno != ENOENT) { - fprintf(stderr, "Could not read %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not read %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } mesh->invitation_key = ecdsa_generate(); if(!mesh->invitation_key) { - fprintf(stderr, "Could not generate a new key!\n"); + logger(mesh, MESHLINK_DEBUG, "Could not generate a new key!\n"); meshlink_errno = MESHLINK_EINTERNAL; return false; } f = fopen(filename, "w"); if(!f) { - fprintf(stderr, "Could not write %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not write %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1210,7 +1233,7 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { mesh->invitation_key = ecdsa_read_pem_private_key(f); fclose(f); if(!mesh->invitation_key) { - fprintf(stderr, "Could not read private key from %s\n", filename); + logger(mesh, MESHLINK_DEBUG, "Could not read private key from %s\n", filename); meshlink_errno = MESHLINK_ESTORAGE; } } @@ -1227,7 +1250,7 @@ bool meshlink_add_address(meshlink_handle_t *mesh, const char *address) { for(const char *p = address; *p; p++) { if(isalnum(*p) || *p == '-' || *p == '.' || *p == ':') continue; - fprintf(stderr, "Invalid character in address: %s\n", address); + logger(mesh, MESHLINK_DEBUG, "Invalid character in address: %s\n", address); meshlink_errno = MESHLINK_EINVAL; return false; } @@ -1243,7 +1266,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { // Check validity of the new node's name if(!check_id(name)) { - fprintf(stderr, "Invalid name for node.\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid name for node.\n"); meshlink_errno = MESHLINK_EINVAL; return NULL; } @@ -1252,14 +1275,14 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { char filename[PATH_MAX]; snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name); if(!access(filename, F_OK)) { - fprintf(stderr, "A host config file for %s already exists!\n", name); + logger(mesh, MESHLINK_DEBUG, "A host config file for %s already exists!\n", name); meshlink_errno = MESHLINK_EEXIST; return NULL; } // Ensure no other nodes know about this name if(meshlink_get_node(mesh, name)) { - fprintf(stderr, "A node with name %s is already known!\n", name); + logger(mesh, MESHLINK_DEBUG, "A node with name %s is already known!\n", name); meshlink_errno = MESHLINK_EEXIST; return NULL; } @@ -1267,7 +1290,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { // Get the local address char *address = get_my_hostname(mesh); if(!address) { - fprintf(stderr, "No Address known for ourselves!\n"); + logger(mesh, MESHLINK_DEBUG, "No Address known for ourselves!\n"); meshlink_errno = MESHLINK_ERESOLV; return NULL; } @@ -1304,7 +1327,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { snprintf(filename, sizeof filename, "%s" SLASH "invitations" SLASH "%s", mesh->confbase, cookiehash); int ifd = open(filename, O_RDWR | O_CREAT | O_EXCL, 0600); if(!ifd) { - fprintf(stderr, "Could not create invitation file %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create invitation file %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1334,7 +1357,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { } fclose(tc); } else { - fprintf(stderr, "Could not create %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1392,7 +1415,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { } if(!port) - port = "655"; + goto invalid; if(!b64decode(slash, mesh->hash, 18) || !b64decode(slash + 24, mesh->cookie, 18)) goto invalid; @@ -1420,14 +1443,14 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { mesh->sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); if(mesh->sock <= 0) { - fprintf(stderr, "Could not open socket: %s\n", strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not open socket: %s\n", strerror(errno)); freeaddrinfo(ai); meshlink_errno = MESHLINK_ENETWORK; return false; } if(connect(mesh->sock, ai->ai_addr, ai->ai_addrlen)) { - fprintf(stderr, "Could not connect to %s port %s: %s\n", address, port, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not connect to %s port %s: %s\n", address, port, strerror(errno)); closesocket(mesh->sock); freeaddrinfo(ai); meshlink_errno = MESHLINK_ENETWORK; @@ -1436,14 +1459,14 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { freeaddrinfo(ai); - fprintf(stderr, "Connected to %s port %s...\n", address, port); + logger(mesh, MESHLINK_DEBUG, "Connected to %s port %s...\n", address, port); // Tell him we have an invitation, and give him our throw-away key. mesh->blen = 0; if(!sendline(mesh->sock, "0 ?%s %d.%d", b64key, PROT_MAJOR, 1)) { - fprintf(stderr, "Error sending request to %s port %s: %s\n", address, port, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Error sending request to %s port %s: %s\n", address, port, strerror(errno)); closesocket(mesh->sock); meshlink_errno = MESHLINK_ENETWORK; return false; @@ -1455,7 +1478,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { int code, hismajor, hisminor = 0; if(!recvline(mesh, sizeof mesh->line) || sscanf(mesh->line, "%d %s %d.%d", &code, hisname, &hismajor, &hisminor) < 3 || code != 0 || hismajor != PROT_MAJOR || !check_id(hisname) || !recvline(mesh, sizeof mesh->line) || !rstrip(mesh->line) || sscanf(mesh->line, "%d ", &code) != 1 || code != ACK || strlen(mesh->line) < 3) { - fprintf(stderr, "Cannot read greeting from peer\n"); + logger(mesh, MESHLINK_DEBUG, "Cannot read greeting from peer\n"); closesocket(mesh->sock); meshlink_errno = MESHLINK_ENETWORK; return false; @@ -1465,12 +1488,12 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { char *fingerprint = mesh->line + 2; char hishash[64]; if(sha512(fingerprint, strlen(fingerprint), hishash)) { - fprintf(stderr, "Could not create hash\n%s\n", mesh->line + 2); + logger(mesh, MESHLINK_DEBUG, "Could not create hash\n%s\n", mesh->line + 2); meshlink_errno = MESHLINK_EINTERNAL; return false; } if(memcmp(hishash, mesh->hash, 18)) { - fprintf(stderr, "Peer has an invalid key!\n%s\n", mesh->line + 2); + logger(mesh, MESHLINK_DEBUG, "Peer has an invalid key!\n%s\n", mesh->line + 2); meshlink_errno = MESHLINK_EPEER; return false; @@ -1500,7 +1523,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { if(len < 0) { if(errno == EINTR) continue; - fprintf(stderr, "Error reading data from %s port %s: %s\n", address, port, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Error reading data from %s port %s: %s\n", address, port, strerror(errno)); meshlink_errno = MESHLINK_ENETWORK; return false; } @@ -1517,7 +1540,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { closesocket(mesh->sock); if(!mesh->success) { - fprintf(stderr, "Connection closed by peer, invitation cancelled.\n"); + logger(mesh, MESHLINK_DEBUG, "Connection closed by peer, invitation cancelled.\n"); meshlink_errno = MESHLINK_EPEER; return false; } @@ -1525,7 +1548,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { return true; invalid: - fprintf(stderr, "Invalid invitation URL or you are already connected to a Mesh ?\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid invitation URL or you are already connected to a Mesh ?\n"); meshlink_errno = MESHLINK_EINVAL; return false; } @@ -1540,7 +1563,7 @@ char *meshlink_export(meshlink_handle_t *mesh) { snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, mesh->self->name); FILE *f = fopen(filename, "r"); if(!f) { - fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not open %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1553,7 +1576,7 @@ char *meshlink_export(meshlink_handle_t *mesh) { char *buf = xmalloc(len); snprintf(buf, len, "Name = %s\n", mesh->self->name); if(fread(buf + len - fsize - 1, fsize, 1, f) != 1) { - fprintf(stderr, "Error reading from %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Error reading from %s: %s\n", filename, strerror(errno)); fclose(f); meshlink_errno = MESHLINK_ESTORAGE; return NULL; @@ -1571,14 +1594,14 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { } if(strncmp(data, "Name = ", 7)) { - fprintf(stderr, "Invalid data\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid data\n"); meshlink_errno = MESHLINK_EPEER; return false; } char *end = strchr(data + 7, '\n'); if(!end) { - fprintf(stderr, "Invalid data\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid data\n"); meshlink_errno = MESHLINK_EPEER; return false; } @@ -1588,7 +1611,7 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { memcpy(name, data + 7, len); name[len] = 0; if(!check_id(name)) { - fprintf(stderr, "Invalid Name\n"); + logger(mesh, MESHLINK_DEBUG, "Invalid Name\n"); meshlink_errno = MESHLINK_EPEER; return false; } @@ -1596,20 +1619,20 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { char filename[PATH_MAX]; snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name); if(!access(filename, F_OK)) { - fprintf(stderr, "File %s already exists, not importing\n", filename); + logger(mesh, MESHLINK_DEBUG, "File %s already exists, not importing\n", filename); meshlink_errno = MESHLINK_EEXIST; return false; } if(errno != ENOENT) { - fprintf(stderr, "Error accessing %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Error accessing %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } FILE *f = fopen(filename, "w"); if(!f) { - fprintf(stderr, "Could not create %s: %s\n", filename, strerror(errno)); + logger(mesh, MESHLINK_DEBUG, "Could not create %s: %s\n", filename, strerror(errno)); meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1631,7 +1654,7 @@ void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) { node_t *n; n = (node_t*)node; n->status.blacklisted=true; - fprintf(stderr, "Blacklisted %s.\n",node->name); + logger(mesh, MESHLINK_DEBUG, "Blacklisted %s.\n",node->name); //Make blacklisting persistent in the config file append_config_file(mesh, n->name, "blacklisted", "yes"); @@ -1653,6 +1676,46 @@ void meshlink_whitelist(meshlink_handle_t *mesh, meshlink_node_t *node) { return; } +/* Hint that a hostname may be found at an address + * See header file for detailed comment. + */ +extern void meshlink_hint_address(meshlink_handle_t *mesh, meshlink_node_t *node, struct sockaddr *addr) { + if(!mesh || !node || !addr) + return; + + char *addr_str = malloc(MAX_ADDRESS_LENGTH*sizeof(char)); + memset(addr_str, 0, MAX_ADDRESS_LENGTH*sizeof(char)); + + char *port_str = malloc(MAX_PORT_LENGTH*sizeof(char)); + memset(port_str, 0, MAX_PORT_LENGTH*sizeof(char)); + + // extra byte for a space, and one to make sure string is null-terminated + int full_addr_len = MAX_ADDRESS_LENGTH + MAX_PORT_LENGTH + 2; + + char *full_addr_str = malloc(full_addr_len*sizeof(char)); + memset(full_addr_str, 0, full_addr_len*sizeof(char)); + + // get address and port number + if(!get_ip_str(addr, addr_str, MAX_ADDRESS_LENGTH)) + goto fail; + if(!get_port_str(addr, port_str, MAX_ADDRESS_LENGTH)) + goto fail; + + // append_config_file expects an address, a space, and then a port number + strcat(full_addr_str, addr_str); + strcat(full_addr_str, " "); + strcat(full_addr_str, port_str); + + append_config_file(mesh, node->name, "Address", full_addr_str); + +fail: + free(addr_str); + free(port_str); + free(full_addr_str); + + // @TODO do we want to fire off a connection attempt right away? +} + static void __attribute__((constructor)) meshlink_init(void) { crypto_init(); } @@ -1660,3 +1723,20 @@ static void __attribute__((constructor)) meshlink_init(void) { static void __attribute__((destructor)) meshlink_exit(void) { crypto_exit(); } + +int weight_from_dclass(dclass_t dclass) +{ + switch(dclass) + { + case BACKBONE: + return 1; + + case STATIONARY: + return 3; + + case PORTABLE: + return 6; + } + + return 9; +}