From 74e99de094a34556ba912a5e392eda172571eb53 Mon Sep 17 00:00:00 2001 From: Guus Sliepen Date: Wed, 30 Jul 2014 16:52:47 +0200 Subject: [PATCH] Set meshlink_errno everywhere an error is returned by the public API. --- src/meshlink.c | 208 +++++++++++++++++++++++++++++++++++++++---------- src/meshlink.h | 7 ++ 2 files changed, 176 insertions(+), 39 deletions(-) diff --git a/src/meshlink.c b/src/meshlink.c index fcdaff62..e5ff36f0 100644 --- a/src/meshlink.c +++ b/src/meshlink.c @@ -625,8 +625,15 @@ static bool sendline(int fd, char *format, ...) { static const char *errstr[] = { [MESHLINK_OK] = "No error", + [MESHLINK_EINVAL] = "Invalid argument", [MESHLINK_ENOMEM] = "Out of memory", [MESHLINK_ENOENT] = "No such node", + [MESHLINK_EEXIST] = "Node already exists", + [MESHLINK_EINTERNAL] = "Internal error", + [MESHLINK_ERESOLV] = "Could not resolve hostname", + [MESHLINK_ESTORAGE] = "Storage error", + [MESHLINK_ENETWORK] = "Network error", + [MESHLINK_EPEER] = "Error communicating with peer", }; const char *meshlink_strerror(meshlink_errno_t err) { @@ -644,6 +651,7 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { if(!(key = ecdsa_generate())) { fprintf(stderr, "Error during key generation!\n"); + meshlink_errno = MESHLINK_EINTERNAL; return false; } else fprintf(stderr, "Done.\n"); @@ -651,8 +659,10 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { snprintf(privname, sizeof privname, "%s" SLASH "ecdsa_key.priv", mesh->confbase); f = fopen(privname, "w"); - if(!f) + if(!f) { + meshlink_errno = MESHLINK_ESTORAGE; return false; + } #ifdef HAVE_FCHMOD fchmod(fileno(f), 0600); @@ -662,17 +672,19 @@ static bool ecdsa_keygen(meshlink_handle_t *mesh) { fprintf(stderr, "Error writing private key!\n"); ecdsa_free(key); fclose(f); + meshlink_errno = MESHLINK_EINTERNAL; return false; } fclose(f); - snprintf(pubname, sizeof pubname, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, mesh->name); f = fopen(pubname, "a"); - if(!f) + if(!f) { + meshlink_errno = MESHLINK_ESTORAGE; return false; + } char *pubkey = ecdsa_get_base64_public_key(key); fprintf(f, "ECDSAPublicKey = %s\n", pubkey); @@ -687,6 +699,7 @@ 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)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -695,6 +708,7 @@ static bool meshlink_setup(meshlink_handle_t *mesh) { if(mkdir(filename, 0777) && errno != EEXIST) { fprintf(stderr, "Could not create directory %s: %s\n", filename, strerror(errno)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -702,20 +716,24 @@ static bool meshlink_setup(meshlink_handle_t *mesh) { if(!access(filename, F_OK)) { fprintf(stderr, "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)); - return 1; + meshlink_errno = MESHLINK_ESTORAGE; + return false; } fprintf(f, "Name = %s\n", mesh->name); fclose(f); - if(!ecdsa_keygen(mesh)) + if(!ecdsa_keygen(mesh)) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } check_port(mesh); @@ -728,6 +746,7 @@ meshlink_handle_t *meshlink_open(const char *confbase, const char *name) { if(!confbase || !*confbase) { fprintf(stderr, "No confbase given!\n"); + meshlink_errno = MESHLINK_EINVAL; return NULL; } @@ -739,6 +758,7 @@ meshlink_handle_t *meshlink_open(const char *confbase, const char *name) { if(!check_id(name)) { fprintf(stderr, "Invalid name given!\n"); + meshlink_errno = MESHLINK_EINVAL; return NULL; } else { usingname = true;} } @@ -763,7 +783,9 @@ meshlink_handle_t *meshlink_open(const char *confbase, const char *name) { if(access(filename, R_OK)) { if(errno == ENOENT) { // If not, create it - meshlink_setup(mesh); + if(!meshlink_setup(mesh)) + // meshlink_errno is set by meshlink_setup() + return NULL; } else { fprintf(stderr, "Cannot not read from %s: %s\n", filename, strerror(errno)); return meshlink_close(mesh), NULL; @@ -802,14 +824,17 @@ static void *meshlink_main_loop(void *arg) { } bool meshlink_start(meshlink_handle_t *mesh) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return false; + } // TODO: open listening sockets first //Check that a valid name is set if(!mesh->name ) { fprintf(stderr, "No name given!\n"); + meshlink_errno = MESHLINK_EINVAL; return false; } @@ -818,6 +843,7 @@ bool meshlink_start(meshlink_handle_t *mesh) { if(pthread_create(&mesh->thread, NULL, meshlink_main_loop, mesh) != 0) { fprintf(stderr, "Could not start thread: %s\n", strerror(errno)); memset(&mesh->thread, 0, sizeof mesh->thread); + meshlink_errno = MESHLINK_EINTERNAL; return false; } @@ -827,8 +853,10 @@ bool meshlink_start(meshlink_handle_t *mesh) { } void meshlink_stop(meshlink_handle_t *mesh) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return; + } // Shut down the listening sockets to signal the main thread to shut down @@ -843,8 +871,10 @@ void meshlink_stop(meshlink_handle_t *mesh) { } void meshlink_close(meshlink_handle_t *mesh) { - if(!mesh || !mesh->confbase) + if(!mesh || !mesh->confbase) { + meshlink_errno = MESHLINK_EINVAL; return; + } // Close and free all resources used. @@ -871,31 +901,46 @@ void meshlink_close(meshlink_handle_t *mesh) { } void meshlink_set_receive_cb(meshlink_handle_t *mesh, meshlink_receive_cb_t cb) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return; + } + mesh->receive_cb = cb; } void meshlink_set_node_status_cb(meshlink_handle_t *mesh, meshlink_node_status_cb_t cb) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return; + } + mesh->node_status_cb = cb; } void meshlink_set_log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return; + } + 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) { - if(!mesh || !destination) + if(!mesh || !destination) { + meshlink_errno = MESHLINK_EINVAL; return false; + } + if(!len) return true; - if(!data) + + if(!data) { + meshlink_errno = MESHLINK_EINVAL; return false; + } /* If there is no outgoing list yet, create one. */ @@ -945,8 +990,10 @@ void meshlink_send_from_queue(event_loop_t* el,meshlink_handle_t *mesh) { } ssize_t meshlink_get_pmtu(meshlink_handle_t *mesh, meshlink_node_t *destination) { - if(!mesh || !destination) + if(!mesh || !destination) { + meshlink_errno = MESHLINK_EINVAL; return -1; + } node_t *n = (node_t *)destination; if(!n->status.reachable) @@ -958,14 +1005,19 @@ ssize_t meshlink_get_pmtu(meshlink_handle_t *mesh, meshlink_node_t *destination) } meshlink_node_t *meshlink_get_node(meshlink_handle_t *mesh, const char *name) { - if(!mesh || !name) + if(!mesh || !name) { + meshlink_errno = MESHLINK_EINVAL; return NULL; + } + return (meshlink_node_t *)lookup_node(mesh, (char *)name); // TODO: make lookup_node() use const } meshlink_node_t **meshlink_get_all_nodes(meshlink_handle_t *mesh, meshlink_node_t **nodes, size_t *nmemb) { - if(!mesh || (nmemb && !nodes)) + if(!mesh || (nmemb && !nodes)) { + meshlink_errno = MESHLINK_EINVAL; return NULL; + } meshlink_node_t **result, **p; @@ -990,25 +1042,43 @@ meshlink_node_t **meshlink_get_all_nodes(meshlink_handle_t *mesh, meshlink_node_ } bool meshlink_sign(meshlink_handle_t *mesh, const void *data, size_t len, void *signature, size_t *siglen) { - if(!mesh || !data || !len || !signature || !siglen) + if(!mesh || !data || !len || !signature || !siglen) { + meshlink_errno = MESHLINK_EINVAL; return false; - if(*siglen < MESHLINK_SIGLEN) + } + + if(*siglen < MESHLINK_SIGLEN) { + meshlink_errno = MESHLINK_EINVAL; return false; - if(!ecdsa_sign(mesh->self->connection->ecdsa, data, len, signature)) + } + + if(!ecdsa_sign(mesh->self->connection->ecdsa, data, len, signature)) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } + *siglen = MESHLINK_SIGLEN; return true; } bool meshlink_verify(meshlink_handle_t *mesh, meshlink_node_t *source, const void *data, size_t len, const void *signature, size_t siglen) { - if(!mesh || !data || !len || !signature) + if(!mesh || !data || !len || !signature) { + meshlink_errno = MESHLINK_EINVAL; return false; - if(siglen != MESHLINK_SIGLEN) + } + + if(siglen != MESHLINK_SIGLEN) { + meshlink_errno = MESHLINK_EINVAL; return false; + } + struct node_t *n = (struct node_t *)source; node_read_ecdsa_public_key(mesh, n); - if(!n->ecdsa) + if(!n->ecdsa) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } + return ecdsa_verify(((struct node_t *)source)->ecdsa, data, len, signature); } @@ -1018,6 +1088,7 @@ 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)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1025,6 +1096,7 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { DIR *dir = opendir(filename); if(!dir) { fprintf(stderr, "Could not read directory %s: %s\n", filename, strerror(errno)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1053,6 +1125,7 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { if(errno) { fprintf(stderr, "Error while reading directory %s: %s\n", filename, strerror(errno)); closedir(dir); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1077,17 +1150,20 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { if(!f) { if(errno != ENOENT) { fprintf(stderr, "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"); + meshlink_errno = MESHLINK_EINTERNAL; return false; } f = fopen(filename, "w"); if(!f) { fprintf(stderr, "Could not write %s: %s\n", filename, strerror(errno)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } chmod(filename, 0600); @@ -1096,21 +1172,26 @@ static bool refresh_invitation_key(meshlink_handle_t *mesh) { } else { mesh->invitation_key = ecdsa_read_pem_private_key(f); fclose(f); - if(!mesh->invitation_key) + if(!mesh->invitation_key) { fprintf(stderr, "Could not read private key from %s\n", filename); + meshlink_errno = MESHLINK_ESTORAGE; + } } return mesh->invitation_key; } bool meshlink_add_address(meshlink_handle_t *mesh, const char *address) { - if(!mesh || !address) + if(!mesh || !address) { + meshlink_errno = MESHLINK_EINVAL; return false; + } for(const char *p = address; *p; p++) { if(isalnum(*p) || *p == '-' || *p == '.' || *p == ':') continue; fprintf(stderr, "Invalid character in address: %s\n", address); + meshlink_errno = MESHLINK_EINVAL; return false; } @@ -1118,12 +1199,15 @@ bool meshlink_add_address(meshlink_handle_t *mesh, const char *address) { } char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { - if(!mesh) - return false; + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; + return NULL; + } // Check validity of the new node's name if(!check_id(name)) { fprintf(stderr, "Invalid name for node.\n"); + meshlink_errno = MESHLINK_EINVAL; return NULL; } @@ -1132,12 +1216,14 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { 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); + 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); + meshlink_errno = MESHLINK_EEXIST; return NULL; } @@ -1145,11 +1231,14 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { char *address = get_my_hostname(mesh); if(!address) { fprintf(stderr, "No Address known for ourselves!\n"); + meshlink_errno = MESHLINK_ERESOLV; return NULL; } - if(!refresh_invitation_key(mesh)) + if(!refresh_invitation_key(mesh)) { + meshlink_errno = MESHLINK_EINTERNAL; return NULL; + } char hash[64]; @@ -1179,6 +1268,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { 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)); + meshlink_errno = MESHLINK_ESTORAGE; return NULL; } FILE *f = fdopen(ifd, "w"); @@ -1208,6 +1298,7 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { fclose(tc); } else { fprintf(stderr, "Could not create %s: %s\n", filename, strerror(errno)); + meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1227,8 +1318,10 @@ char *meshlink_invite(meshlink_handle_t *mesh, const char *name) { } bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { - if(!mesh || !invitation) + if(!mesh || !invitation) { + meshlink_errno = MESHLINK_EINVAL; return false; + } //TODO: think of a better name for this variable, or of a different way to tokenize the invitation URL. char copy[strlen(invitation) + 1]; @@ -1269,8 +1362,10 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { // Generate a throw-away key for the invitation. ecdsa_t *key = ecdsa_generate(); - if(!key) + if(!key) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } char *b64key = ecdsa_get_base64_public_key(key); @@ -1281,13 +1376,16 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { // Connect to the meshlink daemon mentioned in the URL. struct addrinfo *ai = str2addrinfo(address, port, SOCK_STREAM); - if(!ai) + if(!ai) { + meshlink_errno = MESHLINK_ERESOLV; return false; + } 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)); freeaddrinfo(ai); + meshlink_errno = MESHLINK_ENETWORK; return false; } @@ -1295,6 +1393,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { fprintf(stderr, "Could not connect to %s port %s: %s\n", address, port, strerror(errno)); closesocket(mesh->sock); freeaddrinfo(ai); + meshlink_errno = MESHLINK_ENETWORK; return false; } @@ -1309,6 +1408,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { 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)); closesocket(mesh->sock); + meshlink_errno = MESHLINK_ENETWORK; return false; } @@ -1320,6 +1420,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { 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"); closesocket(mesh->sock); + meshlink_errno = MESHLINK_ENETWORK; return false; } @@ -1328,25 +1429,33 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { char hishash[64]; if(sha512(fingerprint, strlen(fingerprint), hishash)) { fprintf(stderr, "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); + meshlink_errno = MESHLINK_EPEER; return false; } ecdsa_t *hiskey = ecdsa_set_base64_public_key(fingerprint); - if(!hiskey) + if(!hiskey) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } // Start an SPTPS session - if(!sptps_start(&mesh->sptps, mesh, true, false, key, hiskey, "meshlink invitation", 15, invitation_send, invitation_receive)) + if(!sptps_start(&mesh->sptps, mesh, true, false, key, hiskey, "meshlink invitation", 15, invitation_send, invitation_receive)) { + meshlink_errno = MESHLINK_EINTERNAL; return false; + } // Feed rest of input buffer to SPTPS - if(!sptps_receive_data(&mesh->sptps, mesh->buffer, mesh->blen)) + if(!sptps_receive_data(&mesh->sptps, mesh->buffer, mesh->blen)) { + meshlink_errno = MESHLINK_EPEER; return false; + } int len; @@ -1355,11 +1464,14 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { if(errno == EINTR) continue; fprintf(stderr, "Error reading data from %s port %s: %s\n", address, port, strerror(errno)); + meshlink_errno = MESHLINK_ENETWORK; return false; } - if(!sptps_receive_data(&mesh->sptps, mesh->line, len)) + if(!sptps_receive_data(&mesh->sptps, mesh->line, len)) { + meshlink_errno = MESHLINK_EPEER; return false; + } } sptps_stop(&mesh->sptps); @@ -1369,6 +1481,7 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { if(!mesh->success) { fprintf(stderr, "Connection closed by peer, invitation cancelled.\n"); + meshlink_errno = MESHLINK_EPEER; return false; } @@ -1376,18 +1489,22 @@ bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) { invalid: fprintf(stderr, "Invalid invitation URL or you are already connected to a Mesh ?\n"); + meshlink_errno = MESHLINK_EINVAL; return false; } char *meshlink_export(meshlink_handle_t *mesh) { - if(!mesh) + if(!mesh) { + meshlink_errno = MESHLINK_EINVAL; return NULL; + } char filename[PATH_MAX]; 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)); + meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1401,6 +1518,7 @@ char *meshlink_export(meshlink_handle_t *mesh) { if(fread(buf + len - fsize - 1, fsize, 1, f) != 1) { fprintf(stderr, "Error reading from %s: %s\n", filename, strerror(errno)); fclose(f); + meshlink_errno = MESHLINK_ESTORAGE; return NULL; } @@ -1410,17 +1528,21 @@ char *meshlink_export(meshlink_handle_t *mesh) { } bool meshlink_import(meshlink_handle_t *mesh, const char *data) { - if(!mesh || !data) + if(!mesh || !data) { + meshlink_errno = MESHLINK_EINVAL; return false; + } if(strncmp(data, "Name = ", 7)) { fprintf(stderr, "Invalid data\n"); + meshlink_errno = MESHLINK_EPEER; return false; } char *end = strchr(data + 7, '\n'); if(!end) { fprintf(stderr, "Invalid data\n"); + meshlink_errno = MESHLINK_EPEER; return false; } @@ -1430,6 +1552,7 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { name[len] = 0; if(!check_id(name)) { fprintf(stderr, "Invalid Name\n"); + meshlink_errno = MESHLINK_EPEER; return false; } @@ -1437,17 +1560,20 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { 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); + meshlink_errno = MESHLINK_EEXIST; return false; } if(errno != ENOENT) { fprintf(stderr, "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)); + meshlink_errno = MESHLINK_ESTORAGE; return false; } @@ -1460,8 +1586,10 @@ bool meshlink_import(meshlink_handle_t *mesh, const char *data) { } void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) { - if(!mesh || !node) + if(!mesh || !node) { + meshlink_errno = MESHLINK_EINVAL; return; + } node_t *n; n = (node_t*)node; @@ -1475,8 +1603,10 @@ void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) { } void meshlink_whitelist(meshlink_handle_t *mesh, meshlink_node_t *node) { - if(!mesh || !node) + if(!mesh || !node) { + meshlink_errno = MESHLINK_EINVAL; return; + } node_t *n = (node_t *)node; n->status.blacklisted = false; diff --git a/src/meshlink.h b/src/meshlink.h index 2aee78c5..6672b67d 100644 --- a/src/meshlink.h +++ b/src/meshlink.h @@ -44,8 +44,15 @@ typedef struct meshlink_channel meshlink_channel_t; /// Code of most recent error encountered. typedef enum { MESHLINK_OK, ///< Everything is fine + MESHLINK_EINVAL, ///< Invalid parameter(s) to function call MESHLINK_ENOMEM, ///< Out of memory MESHLINK_ENOENT, ///< Node is not known + MESHLINK_EEXIST, ///< Node already exists + MESHLINK_EINTERNAL, ///< MeshLink internal error + MESHLINK_ERESOLV, ///< MeshLink could not resolve a hostname + MESHLINK_ESTORAGE, ///< MeshLink coud not load or write data from/to disk + MESHLINK_ENETWORK, ///< MeshLink encountered a network error + MESHLINK_EPEER, ///< A peer caused an error } meshlink_errno_t; /// A variable holding the last encountered error from MeshLink. -- 2.39.2