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 static const char *errstr[] = {
27 [MESHLINK_OK] = "No error",
28 [MESHLINK_ENOMEM] = "Out of memory",
29 [MESHLINK_ENOENT] = "No such node",
32 const char *meshlink_strerror(meshlink_errno_t errno) {
36 // TODO: hack, remove once all global variables are gone.
37 static void set_mesh(meshlink_handle_t *localmesh) {
41 static meshlink_handle_t *meshlink_setup(meshlink_handle_t *mesh) {
46 meshlink_handle_t *meshlink_open(const char *confbase, const char *name) {
47 if(!confbase || !*confbase) {
48 fprintf(stderr, "No confbase given!\n");
53 fprintf(stderr, "No name given!\n");
58 fprintf(stderr, "Invalid name given!\n");
62 meshlink_handle_t *mesh = xzalloc(sizeof *mesh);
63 mesh->confbase = xstrdup(confbase);
64 mesh->name = xstrdup(name);
66 char filename[PATH_MAX];
67 snprintf(filename, sizeof filename, "%s" SLASH "meshlink.conf", confbase);
69 FILE *f = fopen(filename, "r");
71 if(!f && errno == ENOENT)
72 return meshlink_setup(mesh);
75 fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
76 return meshlink_close(mesh), NULL;
80 if(!fgets(buf, sizeof buf, f)) {
81 fprintf(stderr, "Could not read line from %s: %s\n", filename, strerror(errno));
83 return meshlink_close(mesh), NULL;
88 size_t len = strlen(buf);
89 if(len && buf[len - 1] == '\n')
91 if(len && buf[len - 1] == '\r')
94 if(strncmp(buf, "Name = ", 7) || !check_id(buf + 7)) {
95 fprintf(stderr, "Could not read Name from %s\n", filename);
96 return meshlink_close(mesh), NULL;
99 if(strcmp(buf + 7, name)) {
100 fprintf(stderr, "Name in %s is %s, not the same as %s\n", filename, buf + 7, name);
102 mesh->name = xstrdup(buf + 7);
105 snprintf(filename, sizeof filename, "%s" SLASH "ed25519_key.priv", mesh->confbase);
106 f = fopen(filename, "r");
108 fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
109 return meshlink_close(mesh), NULL;
112 mesh->self->ecdsa = ecdsa_read_pem_private_key(f);
115 if(!mesh->self->ecdsa) {
116 fprintf(stderr, "Could not read keypair!\n");
117 return meshlink_close(mesh), NULL;
124 bool meshlink_start(meshlink_handle_t *mesh) {
128 void meshlink_stop(meshlink_handle_t *mesh) {
131 void meshlink_close(meshlink_handle_t *mesh) {
134 void meshlink_set_receive_cb(meshlink_handle_t *mesh, meshlink_receive_cb_t cb) {
135 mesh->receive_cb = cb;
138 void meshlink_set_node_status_cb(meshlink_handle_t *mesh, meshlink_node_status_cb_t cb) {
139 mesh->node_status_cb = cb;
142 void meshlink_set_log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb) {
144 mesh->log_level = level;
147 bool meshlink_send(meshlink_handle_t *mesh, meshlink_node_t *destination, const void *data, unsigned int len) {
151 meshlink_node_t *meshlink_get_node(meshlink_handle_t *mesh, const char *name) {
155 size_t meshlink_get_all_nodes(meshlink_handle_t *mesh, meshlink_node_t **nodes, size_t nmemb) {
159 char *meshlink_sign(meshlink_handle_t *mesh, const char *data, size_t len) {
163 bool meshlink_verify(meshlink_handle_t *mesh, meshlink_node_t *source, const char *data, size_t len, const char *signature) {
167 char *meshlink_invite(meshlink_handle_t *mesh, const char *name) {
171 bool meshlink_join(meshlink_handle_t *mesh, const char *invitation) {
175 char *meshlink_export(meshlink_handle_t *mesh) {
179 bool meshlink_import(meshlink_handle_t *mesh, const char *data) {
183 void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) {