#include "ttt-client.h"
+#include "ttt-error.h"
+#include "ttt-lex.h"
+#include "ttt-server.h"
+#include "ttt-socket.h"
+#include "ttt-token.h"
+
struct _ttt_client {
+ pthread_mutex_t mutex;
+ pthread_t thread;
+
ttt_server_t *server;
int socket;
+ yyscan_t scanner;
+
+ int id;
+
+ char **request_strings;
+ int num_request_strings;
};
-ttt_client_t *
-ttt_client_create (ttt_server_t *server, int socket)
+static void
+_free_request (ttt_client_t *client);
+
+static void
+_ttt_client_init (ttt_client_t *client,
+ ttt_server_t *server,
+ int socket)
{
- ttt_client_t *client;
+ FILE *file;
- client = xmalloc (sizeof (ttt_client_t));
+ pthread_mutex_init (&client->mutex, NULL);
client->server = server;
client->socket = socket;
- return client;
+ file = xfdopen (socket, "r");
+ yylex_init(&client->scanner);
+ yyset_in (file, client->scanner);
+
+ client->request_strings = NULL;
+ client->num_request_strings = 0;
+
+ /* XXX: Probably want to register only as the result of the HELO
+ command. Not only will that match the protocol correctly, but
+ it will also eliminate a race condition here. */
+ client->id = ttt_server_register_client (server, client);
}
-void
-ttt_client_destroy (ttt_client_t *client)
+static void
+_ttt_client_fini (ttt_client_t *client)
{
- close (client->socket);
+ pthread_mutex_lock (&client->mutex);
- free (client);
+ ttt_server_unregister_client (client->server, client);
+
+ yylex_destroy (client->scanner);
+ shutdown (client->socket, SHUT_RDWR);
+
+ _free_request (client);
+
+ pthread_mutex_unlock (&client->mutex);
+
+ pthread_mutex_destroy (&client->mutex);
}
-void
-ttt_client_handle_requests (ttt_client_t *client)
+/* XXX: The memory management for the request strings is pretty cheesy. */
+static void
+_append_to_request (ttt_client_t *client,
+ const char *string)
+{
+ client->num_request_strings++;
+ client->request_strings =
+ xrealloc (client->request_strings,
+ client->num_request_strings * sizeof (char *));
+
+ client->request_strings[client->num_request_strings - 1] = xstrdup (string);
+}
+
+static void
+_free_request (ttt_client_t *client)
+{
+ int i;
+
+ for (i = 0; i < client->num_request_strings; i++)
+ free (client->request_strings[i]);
+
+ free (client->request_strings);
+
+ client->request_strings = NULL;
+ client->num_request_strings = 0;
+}
+
+static ttt_status_t
+_read_request (ttt_client_t *client)
+{
+ ttt_token_t token;
+
+ _free_request (client);
+
+ while (1) {
+ token = yylex (client->scanner);
+ /* Yes, EOF in two different enums is pretty ugly. */
+ if (token == TTT_TOKEN_EOF)
+ return TTT_STATUS_EOF;
+
+ if (token == TTT_TOKEN_NEWLINE) {
+ if (client->num_request_strings)
+ return TTT_STATUS_SUCCESS;
+ else
+ continue;
+ }
+
+ assert (token == TTT_TOKEN_STRING);
+
+ _append_to_request (client, yyget_text (client->scanner));
+ }
+}
+
+static ttt_error_t
+_execute_request (ttt_client_t *client)
+{
+ int i;
+
+ for (i=0; i < client->num_request_strings; i++)
+ ttt_server_broadcast (client->server, client->request_strings[i]);
+
+ return TTT_ERROR_NONE;
+}
+
+static void *
+_handle_requests_thread (void *closure)
{
-#define BUF_SIZE 1024
+ ttt_status_t status;
+ ttt_error_t error;
+ ttt_client_t *client = closure;
while (1) {
- char buf[BUF_SIZE];
- int cnt;
- cnt = read (client->socket, buf, BUF_SIZE);
- if (cnt == 0)
+
+ status = _read_request (client);
+ if (status == TTT_STATUS_EOF)
break;
- write (0, buf, cnt);
- write (client->socket, buf, cnt);
+ if (status)
+ ASSERT_NOT_REACHED;
+
+ error = _execute_request (client);
+ if (error)
+ ttt_client_send (client, ttt_error_string (error));
}
+
+ _ttt_client_fini (client);
+ free (client);
+
+ return (void *) 0;
}
+/* Exported: See ttt-client.h for documentation. */
+void
+ttt_client_new (void *closure, int client_socket)
+{
+ ttt_server_t *server = closure;
+ ttt_client_t *client;
+ int err;
+
+ client = xmalloc (sizeof (ttt_client_t));
+
+ _ttt_client_init (client, server, client_socket);
+ err = pthread_create (&client->thread, NULL,
+ _handle_requests_thread, client);
+ if (err != 0) {
+ fprintf (stderr, "Error: pthread_create failed: %s. Aborting.\n",
+ strerror (err));
+ exit (1);
+ }
+}
+
+/* Exported: See ttt-client.h for documentation. */
+void
+ttt_client_send (ttt_client_t *client, const char *message)
+{
+ pthread_mutex_lock (&client->mutex);
+
+ ttt_socket_write (client->socket, message, strlen (message));
+
+ pthread_mutex_unlock (&client->mutex);
+}
+
+/* Exported: See ttt-client.h for documentation. */
+int
+ttt_client_get_id (ttt_client_t *client)
+{
+ return client->id;
+}