void BoshBaseRequestHandler::handler(HttpRequest& request, HttpResponse& response){
xml_document doc;
xml_parse_result xmlResult = doc.load(request.getBody().c_str());
if(!xmlResult && !doc.child("body")){
response.response(BoshErrorBuilder::badRequest(xmlResult.description()), HttpResponse::OK, true);
return;
}
xml_node body = doc.child("body");
string domain = body.attribute("to").value();
if(domain != "talk.sixin.com"){
domain = "talk.m.renren.com";
}
if(!domain.empty()){
response.getConnection()->setAttribute("serverDomain", domain);
}
string sessionId = body.attribute("sid").value();
request.setSessionId(sessionId);
request.setMsgNode(body);
boshHandler(request, response);
}
void ProxyResourceHandler::operator()(BtpAction* action)
{
// get request host
HttpRequestHeader* hrh = action->getRequest()->getHeader();
string host = hrh->getFieldValue("X-Forwarded-Host");
if(host.length() == 0)
{
host = hrh->getFieldValue("Host");
}
// find a rule
Rule* rule = findRule(action, host);
if(rule == NULL)
{
// delegate to rest resource handler
RestResourceHandler::operator()(action);
}
else
{
// get URL to proxy or redirect to
UrlRef url = rule->url;
// get url host
string urlHost;
HttpResponse* res = action->getResponse();
bool secure = res->getConnection()->isSecure();
// if URL has no host, reuse incoming host
if(url->getHost().length() == 0)
{
urlHost = host;
}
// if URL has no port or uses a default port number, only use URL host
else if(
(url->getPort() == 0) ||
(secure && url->getPort() == 443) ||
(!secure && url->getPort() == 80))
{
urlHost = url->getHost();
}
// use URL host and port
else
{
urlHost = url->getHostAndPort();
}
// handle 0.0.0.0 (any host) by replacing it with the request host
if(strncmp(urlHost.c_str(), "0.0.0.0", 8) == 0)
{
// 0.0.0.0 is 8 chars long
urlHost.replace(0, 8, host.substr(0, host.find(':')).c_str());
}
// rewrite the request path if it does not match URL path
string path = hrh->getPath();
if(strcmp(path.c_str(), url->getPath().c_str()) != 0)
{
// check for path wildcard
if(strcmp(rule->path, "*") == 0)
{
// since a wildcard is used, prepend the URL path to the
// resource (if the url path isn't '/')
string urlPath = url->getPath();
if(urlPath.length() > 1)
{
path.insert(0, url->getPath().c_str());
}
}
else
{
// replace the part of the resource that matched the proxy
// rule with the rewrite path from the proxy URL
path.replace(0, strlen(rule->path), url->getPath().c_str());
}
}
// do redirect if appropriate
if(rule->type == Rule::Redirect)
{
// set response code
HttpResponseHeader* header = res->getHeader();
if(rule->permanent)
{
header->setStatus(301, "Moved Permanently");
}
else
{
header->setStatus(302, "Found");
}
// build new location url
bool secure = res->getConnection()->isSecure();
header->setField("Location", StringTools::format("%s://%s%s",
secure ? "https" : "http", urlHost.c_str(), path.c_str()));
action->sendResult();
}
// do proxy
else if(rule->type == Rule::Proxy)
{
// get client-side request
HttpRequest* req = action->getRequest();
// do path rewrite
hrh->setPath(path.c_str());
// add X-Forwarded headers
hrh->appendFieldValue("X-Forwarded-For",
req->getConnection()->getRemoteAddress()->toString(true).c_str());
hrh->appendFieldValue("X-Forwarded-Host",
hrh->getFieldValue("Host").c_str());
hrh->appendFieldValue("X-Forwarded-Server",
SocketTools::getHostname().c_str());
// rewrite host if rule specifies it
if(rule->rewriteHost)
{
hrh->setField("Host", urlHost.c_str());
}
// do proxy:
MO_CAT_INFO(BM_NODE_CAT,
"ProxyResourceHandler proxying %s%s => %s%s",
host.c_str(), hrh->getPath(), urlHost.c_str(), path.c_str());
MO_CAT_DEBUG(BM_NODE_CAT,
"ProxyResourceHandler request header for %s%s => %s%s:\n%s",
host.c_str(), hrh->getPath(),
urlHost.c_str(), path.c_str(),
hrh->toString().c_str());
// get a connection
BtpClient* btpc = mNode->getMessenger()->getBtpClient();
HttpConnection* conn = btpc->createConnection(false, &(*url));
if(conn == NULL)
{
// send service unavailable
HttpResponseHeader* header = action->getResponse()->getHeader();
header->setStatus(503, "Service Unavailable");
string content =
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
"<html><head>\n"
"<title>503 Service Unavailable</title>\n"
"</head><body>\n"
"<h1>Service Unavailable</h1>\n"
"<p>The service was not available.</p>\n"
"</body></html>";
ByteBuffer b(content.length());
b.put(content.c_str(), content.length(), false);
ByteArrayInputStream bais(&b);
action->sendResult(&bais);
}
else
{
// proxy the client's request and receive server's header (by
// writing it into the client's response header)
HttpResponse* res = action->getResponse();
if(_proxyHttp(req->getHeader(), req->getConnection(), conn) &&
conn->receiveHeader(res->getHeader()))
{
// proxy the server's response, consider result sent
_proxyHttp(res->getHeader(), conn, req->getConnection());
action->setResultSent(true);
}
// close connection
conn->close();
// clean up
delete conn;
}
if(!action->isResultSent())
{
// send exception (client's fault if code < 500)
ExceptionRef e = Exception::get();
action->sendException(e, e->getCode() < 500);
}
}
}
}
