5 #include "../src/meshlink-tiny++.h"
7 class ChatMesh : public meshlink::mesh {
9 void log(meshlink::log_level_t level, const char *text) {
10 const char *levelstr[] = {"DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"};
11 fprintf(stderr, "%s: %s\n", levelstr[level], text);
14 void receive(meshlink::node *source, const void *data, size_t len) {
15 const char *msg = (const char *)data;
17 if(!len || msg[len - 1]) {
18 fprintf(stderr, "Received invalid data from %s\n", source->name);
22 printf("%s says: %s\n", source->name, msg);
25 void node_status(meshlink::node *node, bool reachable) {
27 printf("%s joined.\n", node->name);
29 printf("%s left.\n", node->name);
34 static meshlink::node **nodes;
37 static void parse_command(meshlink::mesh *mesh, char *buf) {
38 char *arg = strchr(buf, ' ');
44 if(!strcasecmp(buf, "join")) {
46 fprintf(stderr, "/join requires an argument!\n");
52 if(!mesh->join(arg)) {
53 fprintf(stderr, "Could not join using invitation: %s\n", meshlink::strerror());
55 fprintf(stderr, "Invitation accepted!\n");
59 fprintf(stderr, "Could not restart MeshLink: %s\n", meshlink::strerror());
62 } else if(!strcasecmp(buf, "who")) {
64 nodes = mesh->get_all_nodes(nodes, &nnodes);
67 fprintf(stderr, "Could not get list of nodes: %s\n", meshlink::strerror());
69 printf("%lu known nodes:", (unsigned long)nnodes);
71 for(size_t i = 0; i < nnodes; i++) {
72 printf(" %s", nodes[i]->name);
78 meshlink::node *node = mesh->get_node(arg);
81 fprintf(stderr, "Error looking up '%s': %s\n", arg, meshlink::strerror());
83 printf("Node %s found\n", arg);
86 } else if(!strcasecmp(buf, "quit")) {
89 } else if(!strcasecmp(buf, "help")) {
91 "<name>: <message> Send a message to the given node.\n"
92 " Subsequent messages don't need the <name>: prefix.\n"
93 "/join <invitation> Join an existing mesh using an invitation.\n"
94 "/kick <name> Blacklist the given node.\n"
95 "/who [<name>] List all nodes or show information about the given node.\n"
96 "/quit Exit this program.\n"
99 fprintf(stderr, "Unknown command '/%s'\n", buf);
103 static void parse_input(meshlink::mesh *mesh, char *buf) {
104 static meshlink::node *destination;
115 if(len && buf[len - 1] == '\n') {
119 if(len && buf[len - 1] == '\r') {
123 // Ignore empty lines.
129 // Commands start with '/'
132 return parse_command(mesh, buf + 1);
135 // Lines in the form "name: message..." set the destination node.
138 char *colon = strchr(buf, ':');
148 destination = mesh->get_node(buf);
151 fprintf(stderr, "Error looking up '%s': %s\n", buf, meshlink::strerror());
157 fprintf(stderr, "Who are you talking to? Write 'name: message...'\n");
161 if(!mesh->send(destination, msg, strlen(msg) + 1)) {
162 fprintf(stderr, "Could not send message to '%s': %s\n", destination->name, meshlink::strerror());
166 printf("Message sent to '%s'.\n", destination->name);
170 int main(int argc, char *argv[]) {
171 const char *confbase = ".chat";
172 const char *nick = NULL;
184 mesh.open(confbase, nick, "chatpp", DEV_CLASS_STATIONARY);
187 fprintf(stderr, "Could not open MeshLink: %s\n", meshlink::strerror());
192 fprintf(stderr, "Could not start MeshLink: %s\n", meshlink::strerror());
196 printf("Chat started.\nType /help for a list of commands.\n");
198 while(fgets(buf, sizeof(buf), stdin)) {
199 parse_input(&mesh, buf);
202 printf("Chat stopping.\n");