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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* munia_proto.cc
*
* Fri Feb 24 08:23:16 CET 2012
* Copyright 2012 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Munia.
*
* Munia is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Munia is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Munia; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "munia_proto.h"
#include <stdio.h>
#include <string.h>
#include <queue>
#include <map>
#include "task.h"
#include "messageparser.h"
#include "messagehandler.h"
#include "connectionhandler.h"
#include "taskmanager.h"
extern TaskManager taskman;
#if 0
static void dump_handshake_info(struct lws_tokens *lwst)
{
int n;
static const char *token_names[WSI_TOKEN_COUNT] = {
/*[WSI_TOKEN_GET_URI] =*/ "GET URI",
/*[WSI_TOKEN_HOST] =*/ "Host",
/*[WSI_TOKEN_CONNECTION] =*/ "Connection",
/*[WSI_TOKEN_KEY1] =*/ "key 1",
/*[WSI_TOKEN_KEY2] =*/ "key 2",
/*[WSI_TOKEN_PROTOCOL] =*/ "Protocol",
/*[WSI_TOKEN_UPGRADE] =*/ "Upgrade",
/*[WSI_TOKEN_ORIGIN] =*/ "Origin",
/*[WSI_TOKEN_DRAFT] =*/ "Draft",
/*[WSI_TOKEN_CHALLENGE] =*/ "Challenge",
/* new for 04 */
/*[WSI_TOKEN_KEY] =*/ "Key",
/*[WSI_TOKEN_VERSION] =*/ "Version",
/*[WSI_TOKEN_SWORIGIN] =*/ "Sworigin",
/* new for 05 */
/*[WSI_TOKEN_EXTENSIONS] =*/ "Extensions",
/* client receives these */
/*[WSI_TOKEN_ACCEPT] =*/ "Accept",
/*[WSI_TOKEN_NONCE] =*/ "Nonce",
/*[WSI_TOKEN_HTTP] =*/ "Http",
/*[WSI_TOKEN_MUXURL] =*/ "MuxURL",
};
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
if (lwst[n].token == NULL || lwst[n].token_len == 0) continue;
fprintf(stderr, " %s = ", token_names[n]);
if(fwrite(lwst[n].token, 1, lwst[n].token_len, stderr)) {}
fprintf(stderr, "\n");
}
}
#endif
static std::map<struct libwebsocket *, std::queue<std::string> > msgqueue;
int callback_lws_task(struct libwebsocket_context * context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
taskman.tree.toStdOut();
printf("Callback on %p\n", wsi);
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
connection_handler.init(wsi);
break;
case LWS_CALLBACK_CLOSED:
connection_handler.close(wsi);
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
{
printf("Socket for client %p writable\n", wsi);
if(msgqueue[wsi].size() > 0) {
std::string msg = msgqueue[wsi].front();
msgqueue[wsi].pop();
int n = libwebsocket_write(wsi, (unsigned char *)
msg.c_str() +
LWS_SEND_BUFFER_PRE_PADDING,
msg.length() - LWS_SEND_BUFFER_POST_PADDING -
LWS_SEND_BUFFER_PRE_PADDING,
LWS_WRITE_TEXT);
if(n < 0) {
fprintf(stderr, "ERROR writing to socket");
exit(1);
}
}
else {
printf("\tNo queued data awaiting transmission\n");
}
if(msgqueue[wsi].size()) {
libwebsocket_rx_flow_control(wsi, 1);
libwebsocket_callback_on_writable(context, wsi);
}
}
break;
/*
case LWS_CALLBACK_BROADCAST:
printf("LWS_CALLBACK_BROADCAST\n");
n = libwebsocket_write(wsi, (unsigned char*)in, len, LWS_WRITE_TEXT);
if (n < 0) fprintf(stderr, "task write failed\n");
break;
*/
case LWS_CALLBACK_RECEIVE:
{
printf("LWS_CALLBACK_RECEIVE\n");
printf("%s\n", (char*)in);
std::string data;
data.append((char*)in, len);
MessageList mlst = parse_msg(data);
printf("Handling %d incoming message\n", mlst.size());
MessageList omsgs = handle_msg(mlst, wsi);
printf("Handling %d outgoing messages\n", omsgs.size());
MessageList::iterator omi = omsgs.begin();
while(omi != omsgs.end()) {
std::string msgcmd = msg_tostring(*omi);
printf("%d nodes affected by command\n", omi->nodes.size());
std::list<std::pair<clientid_t, taskid_t> > clients =
connection_handler.observerlist(omi->nodes);
printf("Writing message to %d clients\n", clients.size());
std::list<std::pair<clientid_t, taskid_t> >::iterator ci = clients.begin();
while(ci != clients.end()) {
std::string msg;
clientid_t clientid = (*ci).first;
char tidstr[32];
sprintf(tidstr, "%u", (*ci).second);
printf("\tAdding data to %p's queue\n", clientid);
msg.append((size_t)LWS_SEND_BUFFER_PRE_PADDING, ' ');
msg.append(tidstr);
msg.append(" ");
msg.append(msgcmd);
msg.append((size_t)LWS_SEND_BUFFER_POST_PADDING, ' ');
msgqueue[clientid].push(msg);
ci++;
}
omi++;
}
libwebsocket_callback_on_writable_all_protocol(
libwebsockets_get_protocol(wsi));
}
break;
default:
break;
}
return 0;
}
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