--- /dev/null
+#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;
+}
#include <stdbool.h>
#include <stddef.h>
+#ifndef MESHLINK_INTERNAL_H
+
/// A handle for an instance of MeshLink.
typedef struct meshlink_handle meshlink_handle_t;
/// A handle for a MeshLink node.
-typedef struct meshlink_node meshlink_node_t;
+typedef struct meshlink_node {
+ const char *name;
+} meshlink_node_t;
+
+#endif // MESHLINK_INTERNAL_H
+
+/// Code of most recent error encountered.
+typedef enum {
+ MESHLINK_OK, // Everything is fine
+ MESHLINK_ENOMEM, // Out of memory
+ MESHLINK_ENOENT, // Node is not known
+} meshlink_errno_t;
+
+extern meshlink_errno_t meshlink_errno;
+
+/// Textual representation of most recent error encountered.
+const char *meshlink_errstr;
+
+/// Get the text for the given MeshLink error code.
+/** This function returns a pointer to the string containing the description of the given error code.
+ *
+ * @param errno An error code returned by MeshLink.
+ *
+ * @return A pointer to a string containing the description of the error code.
+ */
+extern const char *meshlink_strerror(meshlink_errno_t errno);
/// Initialize MeshLink's configuration directory.
/** This function causes MeshLink to initialize its configuration directory,
*
* @param confbase The directory in which MeshLink will store its configuration files.
* @param name The name which this instance of the application will use in the mesh.
+ *
* @return This function will return true if MeshLink has succesfully set up its configuration files, false otherwise.
*/
-extern bool meshlink_setup(const char *confbase, const char *name);
+extern meshlink_handle_t *meshlink_open(const char *confbase, const char *name);
/// Start MeshLink.
/** This function causes MeshLink to create a new thread, which will
* handle all network I/O.
*
* @param confbase The directory in which MeshLink will store its configuration files.
- * @return A handle which represents this instance of MeshLink,
- * or NULL in case of an error.
+ *
+ * @return This function will return true if MeshLink has succesfully started its thread, false otherwise.
*/
-extern meshlink_handle_t *meshlink_start(const char *confbase);
+extern bool meshlink_start(meshlink_handle_t *handle);
/// Stop MeshLink.
/** This function causes MeshLink to disconnect from all other nodes,
- * and shuts down its own thread. Afterwards, the handle and any
- * pointers to a struct meshlink_node are invalid.
+ * and shuts down its own thread.
+ *
+ * @param handle A handle which represents an instance of MeshLink.
+ */
+extern void meshlink_stop(meshlink_handle_t *handle);
+
+/// Close the MeshLink handle.
+/** This function calls meshlink_stop() if necessary,
+ * and frees all memory allocated by MeshLink.
+ * Afterwards, the handle and any pointers to a struct meshlink_node are invalid.
*
* @param handle A handle which represents an instance of MeshLink.
*/
-extern void meshlink_stop(meshlink_handle *handle);
+extern void meshlink_close(meshlink_handle_t *handle);
/// A callback for receiving data from the mesh.
/** @param handle A handle which represents an instance of MeshLink.
projects / meshlink / commitdiff