?? httpserver.cpp
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//
// This file is part of an OMNeT++/OMNEST simulation example.
//
// Copyright (C) 1992-2005 Andras Varga
//
// This file is distributed WITHOUT ANY WARRANTY. See the file
// `license' for details on this and other legal matters.
//
#ifdef _MSC_VER
#pragma warning(disable:4786)
#endif
#include <fstream>
#include "httpserver.h"
#include "httpmsg_m.h"
Define_Module( HTTPServer );
void HTTPServer::initialize()
{
QueueBase::initialize();
}
simtime_t HTTPServer::startService(cMessage *msg)
{
ev << "Starting service of " << msg->name() << endl;
return par("serviceTime");
}
void HTTPServer::endService(cMessage *msg)
{
ev << "Completed service of " << msg->name() << endl;
HTTPMsg *httpMsg = check_and_cast<HTTPMsg *>(msg);
std::string reply = processHTTPCommand(httpMsg->getPayload());
httpMsg->setPayload(reply.c_str());
int clientAddr = httpMsg->getSrcAddress();
int srvAddr = httpMsg->getDestAddress();
httpMsg->setDestAddress(clientAddr);
httpMsg->setSrcAddress(srvAddr);
send(msg, "out");
}
std::string HTTPServer::processHTTPCommand(const char *httpReqHeader)
{
// parse header. first line should be: GET uri HTTP/1.1
std::string header(httpReqHeader);
std::string::size_type pos = header.find("\r\n");
if (pos==std::string::npos)
{
ev << "Bad HTTP request\n";
return std::string("Bad request 400\r\n");
}
std::string cmd(header,0,pos);
ev << "Received: " << cmd << "\n";
// we only accept GET
if (cmd.length()<4 || cmd.compare(0,4,"GET "))
{
ev << "Wrong HTTP verb, only GET is supported\n";
return std::string("501 Not Implemented\r\n");
}
// parse URI and get corresponding content
pos = cmd.find(" ",4);
std::string uri(cmd,4,pos-4);
std::string content = getContentFor(uri.c_str());
// assemble reply
char len[16];
sprintf(len, "%d", content.length());
std::string reply = std::string("HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"Content-Length: ") + len + "\r\n"
"\r\n" +
content;
return reply;
}
std::string HTTPServer::getContentFor(const char *uri)
{
// try to find in cache
StringMap::iterator it = htdocs.find(uri);
if (it!=htdocs.end())
return it->second;
// not in cache -- load and cache it
std::string fname = std::string("htdocs/")+(strcmp(uri,"/")==0 ? "index.html" : uri);
#ifdef _MSC_VER
for (unsigned int i=0; i<fname.length(); i++)
if (fname.at(i)=='/')
fname.at(i) = '\\';
#endif
std::ifstream file(fname.c_str(), std::ios::in|std::ios::binary|std::ios::ate);
if (file.fail())
{
std::string content = "<html><body><h3>404 Not found</h3></body></html>";
htdocs[uri] = content;
return content;
}
long size = file.tellg();
file.seekg (0, std::ios::beg);
char *buffer = new char [size];
file.read (buffer, size);
file.close();
std::string content(buffer, size);
delete [] buffer;
ev << "URI=" << uri << " ---> " << content << "\n";
htdocs[uri] = content;
return content;
}
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