5 #include "../src/meshlink-tiny.h"
7 static void log_message(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
10 static const char *levelstr[] = {
11 [MESHLINK_DEBUG] = "\x1b[34mDEBUG",
12 [MESHLINK_INFO] = "\x1b[32mINFO",
13 [MESHLINK_WARNING] = "\x1b[33mWARNING",
14 [MESHLINK_ERROR] = "\x1b[31mERROR",
15 [MESHLINK_CRITICAL] = "\x1b[31mCRITICAL",
18 fprintf(stderr, "%s:\x1b[0m %s\n", levelstr[level], text);
21 static void receive(meshlink_handle_t *mesh, meshlink_node_t *source, const void *data, size_t len) {
24 const char *msg = data;
26 if(!len || msg[len - 1]) {
27 fprintf(stderr, "Received invalid data from %s\n", source->name);
31 printf("%s says: %s\n", source->name, msg);
34 static void node_status(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
38 printf("%s joined.\n", node->name);
40 printf("%s left.\n", node->name);
44 static meshlink_node_t **nodes;
47 static void parse_command(meshlink_handle_t *mesh, char *buf) {
48 char *arg = strchr(buf, ' ');
54 if(!strcasecmp(buf, "join")) {
56 fprintf(stderr, "/join requires an argument!\n");
62 if(!meshlink_join(mesh, arg)) {
63 fprintf(stderr, "Could not join using invitation: %s\n", meshlink_strerror(meshlink_errno));
65 fprintf(stderr, "Invitation accepted!\n");
68 if(!meshlink_start(mesh)) {
69 fprintf(stderr, "Could not restart MeshLink: %s\n", meshlink_strerror(meshlink_errno));
72 } else if(!strcasecmp(buf, "who")) {
74 nodes = meshlink_get_all_nodes(mesh, nodes, &nnodes);
77 fprintf(stderr, "Could not get list of nodes: %s\n", meshlink_strerror(meshlink_errno));
79 printf("%zu known nodes:", nnodes);
81 for(size_t i = 0; i < nnodes; i++) {
82 printf(" %s", nodes[i]->name);
88 meshlink_node_t *node = meshlink_get_node(mesh, arg);
91 fprintf(stderr, "Error looking up '%s': %s\n", arg, meshlink_strerror(meshlink_errno));
93 printf("Node %s found\n", arg);
96 } else if(!strcasecmp(buf, "quit")) {
99 } else if(!strcasecmp(buf, "help")) {
101 "<name>: <message> Send a message to the given node.\n"
102 " Subsequent messages don't need the <name>: prefix.\n"
103 "/join <invitation> Join an existing mesh using an invitation.\n"
104 "/kick <name> Blacklist the given node.\n"
105 "/who [<name>] List all nodes or show information about the given node.\n"
106 "/quit Exit this program.\n"
109 fprintf(stderr, "Unknown command '/%s'\n", buf);
113 static void parse_input(meshlink_handle_t *mesh, char *buf) {
114 static meshlink_node_t *destination;
125 if(len && buf[len - 1] == '\n') {
129 if(len && buf[len - 1] == '\r') {
133 // Ignore empty lines.
139 // Commands start with '/'
142 parse_command(mesh, buf + 1);
146 // Lines in the form "name: message..." set the destination node.
149 char *colon = strchr(buf, ':');
159 destination = meshlink_get_node(mesh, buf);
162 fprintf(stderr, "Error looking up '%s': %s\n", buf, meshlink_strerror(meshlink_errno));
168 fprintf(stderr, "Who are you talking to? Write 'name: message...'\n");
172 if(!meshlink_send(mesh, destination, msg, strlen(msg) + 1)) {
173 fprintf(stderr, "Could not send message to '%s': %s\n", destination->name, meshlink_strerror(meshlink_errno));
177 printf("Message sent to '%s'.\n", destination->name);
180 int main(int argc, char *argv[]) {
181 const char *confbase = ".chat";
182 const char *nick = NULL;
193 meshlink_set_log_cb(NULL, MESHLINK_INFO, log_message);
195 meshlink_handle_t *mesh = meshlink_open(confbase, nick, "chat", DEV_CLASS_STATIONARY);
198 fprintf(stderr, "Could not open MeshLink: %s\n", meshlink_strerror(meshlink_errno));
202 meshlink_set_receive_cb(mesh, receive);
203 meshlink_set_node_status_cb(mesh, node_status);
204 meshlink_set_log_cb(mesh, MESHLINK_INFO, log_message);
206 if(!meshlink_start(mesh)) {
207 fprintf(stderr, "Could not start MeshLink: %s\n", meshlink_strerror(meshlink_errno));
211 printf("Chat started.\nType /help for a list of commands.\n");
213 while(fgets(buf, sizeof(buf), stdin)) {
214 parse_input(mesh, buf);
217 printf("Chat stopping.\n");
220 meshlink_close(mesh);