X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=examples%2Fchat.c;fp=examples%2Fchat.c;h=84e3dadb6930ffc128ed6254739298b0f691102a;hb=1d91eecd5611005de957d4821b8bb205000ed57f;hp=0000000000000000000000000000000000000000;hpb=8c0e37e33806cc44948e49d83ebce26dae3ba86d;p=meshlink

diff --git a/examples/chat.c b/examples/chat.c
new file mode 100644
index 00000000..84e3dadb
--- /dev/null
+++ b/examples/chat.c
@@ -0,0 +1,170 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "../src/meshlink.h"
+
+static void receive(meshlink_handle_t *mesh, meshlink_node_t *source, const char *data, size_t len) {
+	if(!len || data[len - 1]) {
+		fprintf(stderr, "Received invalid data from %s\n", source->name);
+		return;
+	}
+
+	printf("%s says: %s\n", source->name, data);
+}
+
+static void node_status(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
+	if(reachable)
+		printf("%s joined.\n", node->name);
+	else
+		printf("%s left.\n", node->name);
+}
+
+static void parse_command(meshlink_handle_t *mesh, char *buf) {
+	char *arg = strchr(buf, ' ');
+	if(arg)
+		*arg++ = 0;
+
+	if(!strcasecmp(buf, "invite")) {
+		char *invitation;
+
+		if(!arg) {
+			fprintf(stderr, "/invite requires an argument!\n");
+			return;
+		}
+
+		invitation = meshlink_invite(mesh, arg);
+		if(!invitation) {
+			fprintf(stderr, "Could not invite '%s': %s\n", arg, meshlink_errstr);
+			return;
+		}
+
+		printf("Invitation for %s: %s\n", arg, invitation);
+		free(invitation);
+	} else if(!strcasecmp(buf, "join")) {
+		if(!arg) {
+			fprintf(stderr, "/join requires an argument!\n");
+			return;
+		}
+
+		if(!meshlink_join(mesh, arg))
+			fprintf(stderr, "Could not join using invitation: %s\n", meshlink_errstr);
+		else
+			fprintf(stderr, "Invitation accepted!\n");
+	} else if(!strcasecmp(buf, "kick")) {
+		if(!arg) {
+			fprintf(stderr, "/kick requires an argument!\n");
+			return;
+		}
+
+		meshlink_node_t *node = meshlink_get_node(mesh, arg);
+		if(!node) {
+			fprintf(stderr, "Unknown node '%s'\n", arg);
+			return;
+		}
+
+		meshlink_blacklist(mesh, node);
+
+		printf("Node '%s' blacklisted.\n", arg);
+	} else if(!strcasecmp(buf, "quit")) {
+		printf("Bye!\n");
+		fclose(stdin);
+	} else {
+		fprintf(stderr, "Unknown command '/%s'\n", buf);
+	}
+}
+
+static void parse_input(meshlink_handle_t *mesh, char *buf) {
+	static meshlink_node_t *destination;
+	size_t len;
+
+	if(!buf)
+		return;
+
+	// Remove newline.
+
+	len = strlen(buf);
+
+	if(len && buf[len - 1] == '\n')
+		buf[--len] = 0;
+
+	if(len && buf[len - 1] == '\r')
+		buf[--len] = 0;
+
+	// Ignore empty lines.
+
+	if(!len)
+		return;
+
+	// Commands start with '/'
+
+	if(*buf == '/')
+		return parse_command(mesh, buf + 1);
+
+	// Lines in the form "name: message..." set the destination node.
+
+	char *msg = buf;
+	char *colon = strchr(buf, ':');
+
+	if(colon) {
+		*colon = 0;
+		msg = colon + 1;
+		if(*msg == ' ')
+			msg++;
+
+		destination = meshlink_get_node(mesh, buf);
+		if(!destination) {
+			fprintf(stderr, "Unknown node '%s'\n", buf);
+			return;
+		}
+	}
+
+	if(!destination) {
+		fprintf(stderr, "Who are you talking to? Write 'name: message...'\n");
+		return;
+	}
+
+	if(!meshlink_send(mesh, destination, msg, strlen(msg) + 1)) {
+		fprintf(stderr, "Could not send message to '%s': %s\n", destination->name, meshlink_errstr);
+		return;
+	}
+
+	printf("Message sent to '%s'.\n", destination->name);
+}
+
+int main(int argc, char *argv[]) {
+	const char *confbase = ".chat";
+	const char *nick = NULL;
+	char buf[1024];
+
+	if(argc > 1)
+		confbase = argv[1];
+
+	if(argc > 2)
+		nick = argv[2];
+
+	mesh = meshlink_open(confbase, nick);
+	if(!mesh) {
+		fprintf(stderr, "Could not open MeshLink: %s\n", meshlink_errstr);
+		return 1;
+	}
+
+	meshlink_set_receive_cb(receive);
+	meshlink_set_node_status_cb(node_changed);
+
+	if(!meshlink_start(mesh)) {
+		fprintf(stderr, "Could not start MeshLink: %s\n", meshlink_errstr);
+		return 1;
+	}
+
+	printf("Chat started.\n");
+
+	while(fgets(buf, sizeof buf, stdin))
+		parse_input(mesh, buf);
+
+	printf("Chat stopping.\n");
+
+	meshlink_stop(mesh);
+	meshlink_close(mesh);
+
+	return 0;
+}