+++ /dev/null
-/* $Id$ */
-
-/* tcp trp (transport) - send/receive a bunch of bytes from a tcp socket */
-
-/* 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 <unistd.h> /* close() pipe() read() write() */
-#include <signal.h> /* close() pipe() read() write() */
-#include <netinet/in.h> /* sometimes required for #include <arpa/inet.h> */
-#include <netinet/tcp.h> /* TCP_NODELAY */
-#include <arpa/inet.h> /* inet_ntoa() */
-#include <netdb.h> /* getprotobyname() */
-#include <sys/time.h> /* struct timeval */
-#include <errno.h> /* errno */
-#include <sys/wait.h> /* waitpid() */
-#include <sys/socket.h> /* getpeername() socket() */
-#include <stdlib.h>
-#include <string.h> /* memset */
-
-#include "gras_private.h"
-#include "transport_private.h"
-
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(trp_tcp,transport);
-
-/***
- *** Prototypes
- ***/
-gras_error_t gras_trp_tcp_socket_client(gras_trp_plugin_t *self,
- const char *host,
- unsigned short port,
- /* OUT */ gras_socket_t *sock);
-gras_error_t gras_trp_tcp_socket_server(gras_trp_plugin_t *self,
- unsigned short port,
- /* OUT */ gras_socket_t *sock);
-gras_error_t gras_trp_tcp_socket_accept(gras_socket_t *sock,
- gras_socket_t **dst);
-
-void gras_trp_tcp_socket_close(gras_socket_t *sd);
-
-gras_error_t gras_trp_tcp_chunk_send(gras_socket_t *sd,
- const char *data,
- long int size);
-
-gras_error_t gras_trp_tcp_chunk_recv(gras_socket_t *sd,
- char *data,
- long int size);
-
-void gras_trp_tcp_exit(gras_trp_plugin_t *plug);
-
-
-static int TcpProtoNumber(void);
-/***
- *** Specific plugin part
- ***/
-
-typedef struct {
- fd_set msg_socks;
- fd_set raw_socks;
-} gras_trp_tcp_plug_data_t;
-
-/***
- *** Specific socket part
- ***/
-
-typedef struct {
- int buffsize;
-} gras_trp_tcp_sock_data_t;
-
-
-/***
- *** Code
- ***/
-gras_error_t
-gras_trp_tcp_setup(gras_trp_plugin_t *plug) {
-
- gras_trp_tcp_plug_data_t *data = malloc(sizeof(gras_trp_tcp_plug_data_t));
- if (!data)
- RAISE_MALLOC;
-
- FD_ZERO(&(data->msg_socks));
- FD_ZERO(&(data->raw_socks));
-
- plug->socket_client = gras_trp_tcp_socket_client;
- plug->socket_server = gras_trp_tcp_socket_server;
- plug->socket_accept = gras_trp_tcp_socket_accept;
- plug->socket_close = gras_trp_tcp_socket_close;
-
- plug->chunk_send = gras_trp_tcp_chunk_send;
- plug->chunk_recv = gras_trp_tcp_chunk_recv;
-
- plug->flush = NULL; /* nothing's cached */
-
- plug->data = (void*)data;
- plug->exit = gras_trp_tcp_exit;
-
- return no_error;
-}
-
-void gras_trp_tcp_exit(gras_trp_plugin_t *plug) {
- DEBUG1("Exit plugin TCP (free %p)", plug->data);
- free(plug->data);
-}
-
-gras_error_t gras_trp_tcp_socket_client(gras_trp_plugin_t *self,
- const char *host,
- unsigned short port,
- /* OUT */ gras_socket_t *sock){
-
- struct sockaddr_in addr;
- struct hostent *he;
- struct in_addr *haddr;
-
- sock->incoming = 1; /* TCP sockets are duplex'ed */
-
- sock->sd = socket (AF_INET, SOCK_STREAM, 0);
-
- if (sock->sd < 0) {
- RAISE1(system_error,
- "Failed to create socket: %s",
- strerror (errno));
- }
-
- he = gethostbyname (host);
- if (he == NULL) {
- RAISE2(system_error,
- "Failed to lookup hostname %s: %s",
- host, strerror (errno));
- }
-
- haddr = ((struct in_addr *) (he->h_addr_list)[0]);
-
- memset(&addr, 0, sizeof(struct sockaddr_in));
- memcpy (&addr.sin_addr, haddr, sizeof(struct in_addr));
- addr.sin_family = AF_INET;
- addr.sin_port = htons (port);
-
- if (connect (sock->sd, (struct sockaddr*) &addr, sizeof (addr)) < 0) {
- close(sock->sd);
- RAISE3(system_error,
- "Failed to connect socket to %s:%d (%s)",
- host, port, strerror (errno));
- }
-
- return no_error;
-}
-
-/**
- * gras_trp_tcp_socket_server:
- *
- * Open a socket used to receive messages.
- */
-gras_error_t gras_trp_tcp_socket_server(gras_trp_plugin_t *self,
- unsigned short port,
- /* OUT */ gras_socket_t *sock){
-// int size = bufSize * 1024;
- int on = 1;
- struct sockaddr_in server;
-
- gras_trp_tcp_plug_data_t *tcp=(gras_trp_tcp_plug_data_t*)self->data;
-
- sock->outgoing = 1; /* TCP => duplex mode */
-
- server.sin_port = htons((u_short)port);
- server.sin_addr.s_addr = INADDR_ANY;
- server.sin_family = AF_INET;
- if((sock->sd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
- RAISE1(system_error,"socket allocation failed: %s", strerror(errno));
- }
-
- (void)setsockopt(sock->sd, SOL_SOCKET, SO_REUSEADDR,
- (char *)&on, sizeof(on));
- /*
- (void)setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size));
- (void)setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size));
- */
- if (bind(sock->sd, (struct sockaddr *)&server, sizeof(server)) == -1) {
- close(sock->sd);
- RAISE2(system_error,"Cannot bind to port %d: %s",port, strerror(errno));
- }
-
- if (listen(sock->sd, 5) < 0) {
- close(sock->sd);
- RAISE2(system_error,"Cannot listen to port %d: %s",port,strerror(errno));
- }
-
- if (sock->raw)
- FD_SET(sock->sd, &(tcp->raw_socks));
- else
- FD_SET(sock->sd, &(tcp->msg_socks));
-
- DEBUG2("Openned a server socket on port %d (sock %d)",port,sock->sd);
-
- return no_error;
-}
-
-gras_error_t
-gras_trp_tcp_socket_accept(gras_socket_t *sock,
- gras_socket_t **dst) {
- gras_socket_t *res;
- gras_error_t errcode;
-
- struct sockaddr_in peer_in;
- socklen_t peer_in_len = sizeof(peer_in);
-
- int sd;
- int tmp_errno;
-
- TRY(gras_trp_socket_new(1,&res));
-
- sd = accept(sock->sd, (struct sockaddr *)&peer_in, &peer_in_len);
- tmp_errno = errno;
-
- if(sd == -1) {
- gras_socket_close(sock);
- RAISE1(system_error,
- "Accept failed (%s). Droping server socket.", strerror(tmp_errno));
- } else {
- int i = 1;
- socklen_t s = sizeof(int);
-
- if (setsockopt(sd, SOL_SOCKET, SO_KEEPALIVE, (char *)&i, s)
- || setsockopt(sd, TcpProtoNumber(), TCP_NODELAY, (char *)&i, s)) {
- WARN0("setsockopt failed, cannot condition the accepted socket");
- }
-
- /* FIXME: bufSize removed until we can have optionsets
- i = ((gras_trp_tcp_sock_specific_t*)sock->specific)->buffsize;
- if (setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *)&i, s)
- || setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *)&i, s)) {
- WARNING0("setsockopt failed, cannot set buffsize");
- }
- */
-
- res->plugin = sock->plugin;
- res->incoming = sock->incoming;
- res->outgoing = sock->outgoing;
- res->accepting = 0;
- res->sd = sd;
- res->port = -1;
- res->peer_port = peer_in.sin_port;
-
- /* FIXME: Lock to protect inet_ntoa */
- if (((struct sockaddr *)&peer_in)->sa_family != AF_INET) {
- res->peer_name = strdup("unknown");
- } else {
- struct in_addr addrAsInAddr;
- char *tmp;
-
- addrAsInAddr.s_addr = peer_in.sin_addr.s_addr;
-
- tmp = inet_ntoa(addrAsInAddr);
- if (tmp != NULL) {
- res->peer_name = strdup(tmp);
- } else {
- res->peer_name = strdup("unknown");
- }
- }
-
- VERB3("accepted socket %d to %s:%d", sd, res->peer_name,res->peer_port);
-
- *dst = res;
-
- return no_error;
- }
-}
-
-void gras_trp_tcp_socket_close(gras_socket_t *sock){
- gras_trp_tcp_plug_data_t *tcp;
-
- if (!sock) return; /* close only once */
- tcp=sock->plugin->data;
-
- DEBUG1("close tcp connection %d", sock->sd);
-
- /* FIXME: no pipe in GRAS so far
- if(!FD_ISSET(sd, &connectedPipes)) {
- if(shutdown(sd, 2) < 0) {
- GetNWSLock(&lock);
- tmp_errno = errno;
- ReleaseNWSLock(&lock);
-
- / * The other side may have beaten us to the reset. * /
- if ((tmp_errno!=ENOTCONN) && (tmp_errno!=ECONNRESET)) {
- WARN1("CloseSocket: shutdown error %d\n", tmp_errno);
- }
- }
- } */
-
- /* forget about the socket */
- if (sock->raw)
- FD_CLR(sock->sd, &(tcp->raw_socks));
- else
- FD_CLR(sock->sd, &(tcp->msg_socks));
-
- /* close the socket */
- if(close(sock->sd) < 0) {
- WARN3("error while closing tcp socket %d: %d (%s)\n",
- sock->sd, errno, strerror(errno));
- }
-}
-
-/**
- * gras_trp_tcp_chunk_send:
- *
- * Send data on a TCP socket
- */
-gras_error_t
-gras_trp_tcp_chunk_send(gras_socket_t *sock,
- const char *data,
- long int size) {
-
- /* TCP sockets are in duplex mode, don't check direction */
- gras_assert0(size >= 0, "Cannot send a negative amount of data");
-
- while (size) {
- int status = 0;
-
- status = write(sock->sd, data, (size_t)size);
- DEBUG3("write(%d, %p, %ld);", sock->sd, data, size);
-
- if (status == -1) {
- RAISE4(system_error,"write(%d,%p,%ld) failed: %s",
- sock->sd, data, size,
- strerror(errno));
- }
-
- if (status) {
- size -= status;
- data += status;
- } else {
- RAISE0(system_error,"file descriptor closed");
- }
- }
-
- return no_error;
-}
-/**
- * gras_trp_tcp_chunk_recv:
- *
- * Receive data on a TCP socket.
- */
-gras_error_t
-gras_trp_tcp_chunk_recv(gras_socket_t *sock,
- char *data,
- long int size) {
-
- /* TCP sockets are in duplex mode, don't check direction */
- gras_assert0(sock, "Cannot recv on an NULL socket");
- gras_assert0(size >= 0, "Cannot receive a negative amount of data");
-
- while (size) {
- int status = 0;
-
- status = read(sock->sd, data, (size_t)size);
- DEBUG3("read(%d, %p, %ld);", sock->sd, data, size);
-
- if (status == -1) {
- RAISE4(system_error,"read(%d,%p,%d) failed: %s",
- sock->sd, data, (int)size,
- strerror(errno));
- }
-
- if (status) {
- size -= status;
- data += status;
- } else {
- RAISE0(system_error,"file descriptor closed");
- }
- }
-
- return no_error;
-}
-
-
-/*
- * Returns the tcp protocol number from the network protocol data base.
- *
- * getprotobyname() is not thread safe. We need to lock it.
- */
-static int TcpProtoNumber(void) {
- struct protoent *fetchedEntry;
- static int returnValue = 0;
-
- if(returnValue == 0) {
- fetchedEntry = getprotobyname("tcp");
- gras_assert0(fetchedEntry, "getprotobyname(tcp) gave NULL");
- returnValue = fetchedEntry->p_proto;
- }
-
- return returnValue;
-}
