2 meshlink.c -- Implementation of the MeshLink API.
3 Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "meshlink_internal.h"
26 meshlink_handle_t *mesh;
28 static const char *errstr[] = {
29 [MESHLINK_OK] = "No error",
30 [MESHLINK_ENOMEM] = "Out of memory",
31 [MESHLINK_ENOENT] = "No such node",
34 const char *meshlink_strerror(meshlink_errno_t errno) {
38 // TODO: hack, remove once all global variables are gone.
39 static void set_mesh(meshlink_handle_t *localmesh) {
43 static meshlink_handle_t *meshlink_setup(meshlink_handle_t *mesh) {
48 meshlink_handle_t *meshlink_open(const char *confbase, const char *name) {
49 if(!confbase || !*confbase) {
50 fprintf(stderr, "No confbase given!\n");
55 fprintf(stderr, "No name given!\n");
60 fprintf(stderr, "Invalid name given!\n");
64 meshlink_handle_t *mesh = xzalloc(sizeof *mesh);
65 mesh->confbase = xstrdup(confbase);
66 mesh->name = xstrdup(name);
68 char filename[PATH_MAX];
69 snprintf(filename, sizeof filename, "%s" SLASH "meshlink.conf", confbase);
71 FILE *f = fopen(filename, "r");
73 if(!f && errno == ENOENT)
74 return meshlink_setup(mesh);
77 fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
78 return meshlink_close(mesh), NULL;
82 if(!fgets(buf, sizeof buf, f)) {
83 fprintf(stderr, "Could not read line from %s: %s\n", filename, strerror(errno));
85 return meshlink_close(mesh), NULL;
90 size_t len = strlen(buf);
91 if(len && buf[len - 1] == '\n')
93 if(len && buf[len - 1] == '\r')
96 if(strncmp(buf, "Name = ", 7) || !check_id(buf + 7)) {
97 fprintf(stderr, "Could not read Name from %s\n", filename);
98 return meshlink_close(mesh), NULL;
101 if(strcmp(buf + 7, name)) {
102 fprintf(stderr, "Name in %s is %s, not the same as %s\n", filename, buf + 7, name);
104 mesh->name = xstrdup(buf + 7);
107 snprintf(filename, sizeof filename, "%s" SLASH "ed25519_key.priv", mesh->confbase);
108 f = fopen(filename, "r");
110 fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
111 return meshlink_close(mesh), NULL;
114 mesh->self->ecdsa = ecdsa_read_pem_private_key(f);
117 if(!mesh->self->ecdsa) {
118 fprintf(stderr, "Could not read keypair!\n");
119 return meshlink_close(mesh), NULL;
126 bool meshlink_start(meshlink_handle_t *mesh) {
130 void meshlink_stop(meshlink_handle_t *mesh) {
133 void meshlink_close(meshlink_handle_t *mesh) {
136 void meshlink_set_receive_cb(meshlink_handle_t *mesh, meshlink_receive_cb_t cb) {
137 mesh->receive_cb = cb;
140 void meshlink_set_node_status_cb(meshlink_handle_t *mesh, meshlink_node_status_cb_t cb) {
141 mesh->node_status_cb = cb;
144 void meshlink_set_log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb) {
146 mesh->log_level = level;
149 bool meshlink_send(meshlink_handle_t *mesh, meshlink_node_t *destination, const void *data, unsigned int len) {
153 meshlink_node_t *meshlink_get_node(meshlink_handle_t *mesh, const char *name) {
157 size_t meshlink_get_all_nodes(meshlink_handle_t *mesh, meshlink_node_t **nodes, size_t nmemb) {
161 char *meshlink_sign(meshlink_handle_t *mesh, const char *data, size_t len) {
165 bool meshlink_verify(meshlink_handle_t *mesh, meshlink_node_t *source, const char *data, size_t len, const char *signature) {
169 char *meshlink_invite(meshlink_handle_t *mesh, const char *name) {
173 bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) {
177 char *meshlink_export(meshlink_handle_t *mesh) {
181 bool meshlink_import(meshlink_handle_t *mesh, const char *data) {
185 void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) {