*/
#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;
+};
+
+static void
+_free_request (ttt_client_t *client);
-ttt_client_t *
-ttt_client_create (ttt_server_t *server, int socket, int id)
+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;
- client->id = id;
+ file = xfdopen (socket, "r");
+ yylex_init(&client->scanner);
+ yyset_in (file, client->scanner);
- client->buf_head = client->buf;
- client->buf_tail = client->buf;
+ client->request_strings = NULL;
+ client->num_request_strings = 0;
- client->request = NULL;
- client->request_size = 0;
- client->request_len = 0;
-
- return client;
+ /* 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)
{
+ pthread_mutex_lock (&client->mutex);
+
+ ttt_server_unregister_client (client->server, client);
+
+ yylex_destroy (client->scanner);
shutdown (client->socket, SHUT_RDWR);
- free (client->request);
+ _free_request (client);
- free (client);
+ pthread_mutex_unlock (&client->mutex);
+
+ pthread_mutex_destroy (&client->mutex);
}
+/* XXX: The memory management for the request strings is pretty cheesy. */
static void
_append_to_request (ttt_client_t *client,
- const char *buf,
- int size)
+ const char *string)
{
- int size_needed = client->request_len + size;
-
- if (size_needed > client->request_size) {
- if (client->request_size == 0) {
- client->request_size = size_needed;
- } else {
- while (size_needed > client->request_size)
- client->request_size *= 2;
- }
+ client->num_request_strings++;
+ client->request_strings =
+ xrealloc (client->request_strings,
+ client->num_request_strings * sizeof (char *));
- client->request = xrealloc (client->request, client->request_size);
- }
+ 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]);
- memcpy (client->request + client->request_len,
- buf, size);
+ free (client->request_strings);
- client->request_len += size;
+ client->request_strings = NULL;
+ client->num_request_strings = 0;
}
static ttt_status_t
-ttt_client_read_into_request_until (ttt_client_t *client, char delimeter)
+_read_request (ttt_client_t *client)
{
- ttt_bool_t found_delimeter = FALSE;
- int bytes_read;
- char *s;
+ ttt_token_t token;
- client->request_len = 0;
+ _free_request (client);
while (1) {
-
- if (client->buf_tail >= client->buf_head) {
- bytes_read = xread (client->socket,
- client->buf,
- TTT_CLIENT_BUF_SIZE);
- if (bytes_read == 0)
- return TTT_STATUS_EOF;
- client->buf_head = client->buf;
- client->buf_tail = client->buf_head + bytes_read;
+ 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;
}
- for (s = client->buf_head; s < client->buf_tail; s++) {
- if (*s == delimeter) {
- found_delimeter = TRUE;
- s++;
- break;
- }
- }
-
- _append_to_request (client,
- client->buf_head,
- s - client->buf_head);
- client->buf_head = s;
+ assert (token == TTT_TOKEN_STRING);
- if (found_delimeter)
- return TTT_STATUS_SUCCESS;
+ _append_to_request (client, yyget_text (client->scanner));
}
}
-char *
-ttt_client_read_line (ttt_client_t *client)
+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)
{
ttt_status_t status;
- static const char null_terminator = '\0';
+ ttt_error_t error;
+ ttt_client_t *client = closure;
+
+ while (1) {
- status = ttt_client_read_into_request_until (client, '\n');
- if (status) {
- assert (status == TTT_STATUS_EOF);
- return NULL;
+ status = _read_request (client);
+ if (status == TTT_STATUS_EOF)
+ break;
+ if (status)
+ ASSERT_NOT_REACHED;
+
+ error = _execute_request (client);
+ if (error)
+ ttt_client_send (client, ttt_error_string (error));
}
- _append_to_request (client, &null_terminator, 1);
+ _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;
- return client->request;
+ 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;
+}
projects / ttt / blobdiff