/* $Id$ */
-/* bloc_transport - send/receive a bunch of bytes */
+/* transport - low level communication */
/* Authors: Martin Quinson */
/* Copyright (C) 2004 Martin Quinson. */
/* This program is free software; you can redistribute it and/or modify it
under the terms of the license (GNU LGPL) which comes with this package. */
-#include "gras_private.h"
-#include "transport.h"
+#include <time.h> /* time() */
+
+#include "Transport/transport_private.h"
GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(transport,GRAS);
+static gras_dict_t *_gras_trp_plugins; /* All registered plugins */
+static void gras_trp_plugin_free(void *p); /* free one of the plugins */
+
+
+gras_dynar_t *_gras_trp_sockets; /* all existing sockets */
+static void gras_trp_socket_free(void *s); /* free one socket */
+
+static fd_set FDread;
+
+gras_error_t
+gras_trp_plugin_new(const char *name, gras_trp_setup_t setup);
+
+gras_error_t
+gras_trp_plugin_new(const char *name, gras_trp_setup_t setup) {
+ gras_error_t errcode;
+
+ gras_trp_plugin_t *plug = malloc(sizeof(gras_trp_plugin_t));
+ if (!plug)
+ RAISE_MALLOC;
+
+ memset(plug,0,sizeof(gras_trp_plugin_t));
+
+ plug->name=strdup(name);
+ if (!plug->name)
+ RAISE_MALLOC;
+
+ TRY(setup(plug));
+ TRY(gras_dict_set(_gras_trp_plugins,
+ plug->name, plug, gras_trp_plugin_free));
+
+ return no_error;
+}
gras_error_t
gras_trp_init(void){
- RAISE_UNIMPLEMENTED;
+ gras_error_t errcode;
+
+ /* make room for all socket ownership descriptions */
+ TRY(gras_dynar_new(&_gras_trp_sockets, sizeof(gras_socket_t*), NULL));
+
+ /* We do not ear for any socket for now */
+ FD_ZERO(&FDread);
+
+ /* make room for all plugins */
+ TRY(gras_dict_new(&_gras_trp_plugins));
+
+ /* Add them */
+ TRY(gras_trp_plugin_new("tcp", gras_trp_tcp_setup));
+ TRY(gras_trp_plugin_new("file",gras_trp_file_setup));
+ TRY(gras_trp_plugin_new("sg",gras_trp_sg_setup));
+
+ return no_error;
}
void
gras_trp_exit(void){
+ gras_dict_free(&_gras_trp_plugins);
+ gras_dynar_free(_gras_trp_sockets);
+}
+
+
+void gras_trp_plugin_free(void *p) {
+ gras_trp_plugin_t *plug = p;
+
+ if (plug) {
+ if (plug->exit)
+ plug->exit(plug);
+ else if (plug->data)
+ free(plug->data);
+
+ free(plug->name);
+ free(plug);
+ }
+}
+
- ERROR1("%s not implemented",__FUNCTION__);
- abort();
+/**
+ * gras_trp_socket_new:
+ *
+ * Malloc a new socket, and initialize it with defaults
+ */
+gras_error_t gras_trp_socket_new(int incoming,
+ gras_socket_t **dst) {
+
+ gras_socket_t *sock;
+
+ if (! (sock=malloc(sizeof(gras_socket_t))) )
+ RAISE_MALLOC;
+
+ sock->plugin = NULL;
+ sock->sd = -1;
+
+ sock->incoming = incoming? 1:0;
+ sock->outgoing = incoming? 0:1;
+ sock->accepting = incoming? 1:0;
+ DEBUG3("in=%c out=%c accept=%c",
+ sock->incoming?'y':'n',
+ sock->outgoing?'y':'n',
+ sock->accepting?'y':'n');
+
+ sock->port = -1;
+ sock->peer_port = -1;
+ sock->peer_name = NULL;
+ sock->raw = 0;
+
+ *dst = sock;
+ return no_error;
}
+
+/**
+ * gras_socket_server:
+ *
+ * Opens a server socket and make it ready to be listened to.
+ * In real life, you'll get a TCP socket.
+ */
+gras_error_t
+gras_socket_server(unsigned short port,
+ /* OUT */ gras_socket_t **dst) {
+
+ gras_error_t errcode;
+ gras_trp_plugin_t *trp;
+ gras_socket_t *sock;
+
+ *dst = NULL;
+
+ TRY(gras_trp_plugin_get_by_name(gras_if_RL() ? "TCP" : "SG",
+ &trp));
+
+ /* defaults settings */
+ TRY(gras_trp_socket_new(1,&sock));
+ sock->plugin= trp;
+ sock->port=port;
+
+ /* Call plugin socket creation function */
+ errcode = trp->socket_server(trp, port, sock);
+ if (errcode != no_error) {
+ free(sock);
+ return errcode;
+ }
+
+ *dst = sock;
+ /* Register this socket */
+ errcode = gras_dynar_push(_gras_trp_sockets,dst);
+ if (errcode != no_error) {
+ free(sock);
+ *dst = NULL;
+ return errcode;
+ }
+
+ return no_error;
+}
+
+/**
+ * gras_socket_client:
+ *
+ * Opens a client socket to a remote host.
+ * In real life, you'll get a TCP socket.
+ */
+gras_error_t
+gras_socket_client(const char *host,
+ unsigned short port,
+ /* OUT */ gras_socket_t **dst) {
+
+ gras_error_t errcode;
+ gras_trp_plugin_t *trp;
+ gras_socket_t *sock;
+
+ *dst = NULL;
+
+ TRY(gras_trp_plugin_get_by_name(gras_if_RL() ? "TCP" : "SG",
+ &trp));
+
+ /* defaults settings */
+ TRY(gras_trp_socket_new(0,&sock));
+ sock->plugin= trp;
+ sock->peer_port = port;
+ sock->peer_name = strdup(host?host:"localhost");
+
+ /* plugin-specific */
+ errcode= (* trp->socket_client)(trp,
+ host ? host : "localhost", port,
+ sock);
+ if (errcode != no_error) {
+ free(sock);
+ return errcode;
+ }
+
+ /* register socket */
+ *dst = sock;
+ errcode = gras_dynar_push(_gras_trp_sockets,dst);
+ if (errcode != no_error) {
+ free(sock);
+ *dst = NULL;
+ return errcode;
+ }
+
+ return no_error;
+}
+
+void gras_socket_close(gras_socket_t **sock) {
+ gras_socket_t *sock_iter;
+ int cursor;
+
+ /* FIXME: Issue an event when the socket is closed */
+ if (sock && *sock) {
+ gras_dynar_foreach(_gras_trp_sockets,cursor,sock_iter) {
+ if (*sock == sock_iter) {
+ gras_dynar_cursor_rm(_gras_trp_sockets,&cursor);
+ if ( (*sock)->plugin->socket_close)
+ (* (*sock)->plugin->socket_close)(*sock);
+
+ /* free the memory */
+ free(*sock);
+ *sock=NULL;
+ return;
+ }
+ }
+ WARN0("Ignoring request to free an unknown socket");
+ }
+}
+
+/**
+ * gras_trp_chunk_send:
+ *
+ * Send a bunch of bytes from on socket
+ */
+gras_error_t
+gras_trp_chunk_send(gras_socket_t *sd,
+ char *data,
+ size_t size) {
+ gras_assert1(sd->outgoing,
+ "Socket not suited for data send (outgoing=%c)",
+ sd->outgoing?'y':'n');
+ gras_assert1(sd->plugin->chunk_send,
+ "No function chunk_send on transport plugin %s",
+ sd->plugin->name);
+ return (*sd->plugin->chunk_send)(sd,data,size);
+}
+/**
+ * gras_trp_chunk_recv:
+ *
+ * Receive a bunch of bytes from a socket
+ */
+gras_error_t
+gras_trp_chunk_recv(gras_socket_t *sd,
+ char *data,
+ size_t size) {
+ gras_assert0(sd->incoming,
+ "Socket not suited for data receive");
+ gras_assert1(sd->plugin->chunk_recv,
+ "No function chunk_recv on transport plugin %s",
+ sd->plugin->name);
+ return (sd->plugin->chunk_recv)(sd,data,size);
+}
+
+
gras_error_t
gras_trp_plugin_get_by_name(const char *name,
gras_trp_plugin_t **dst){
- RAISE_UNIMPLEMENTED;
+ return gras_dict_get(_gras_trp_plugins,name,(void**)dst);
+}
+
+int gras_socket_my_port (gras_socket_t *sock) {
+ return sock->port;
+}
+int gras_socket_peer_port(gras_socket_t *sock) {
+ return sock->peer_port;
+}
+char *gras_socket_peer_name(gras_socket_t *sock) {
+ return sock->peer_name;
}
