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httpserver.cpp
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/**
* httpserver.cpp
* This file is part of the YATE Project http://YATE.null.ro
*
* Generic HTTP server
*
* Yet Another Telephony Engine - a fully featured software PBX and IVR
* Copyright (C) 2004-2014 Null Team
*
* This software is distributed under multiple licenses;
* see the COPYING file in the main directory for licensing
* information for this specific distribution.
*
* This use of this software may be subject to additional restrictions.
* See the LEGAL file in the main directory for details.
*
* This program 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.
*/
#include <yateclass.h>
#include <yatephone.h>
#include <yatemime.h> // for getUnfoldedLine
#include <string.h>
#include <stdio.h> // for snprintf
#include <stdlib.h> // for atoi
/**
* Message http.preserve is dispatched after request headers is received.
* Message http.serve is dispatched after whole request has been read.
*/
#define HDR_BUFFER_SIZE 2048
#define BODY_BUF_SIZE 4096
#ifndef min
# define min(a,b) ((a)<(b)?(a):(b))
#endif
using namespace TelEngine;
namespace { // anonymous
static Mutex s_mutex(true, "HTTPServer");
static TokenDict s_httpResponseCodes[] = {
{ "Continue", 100 },
{ "Switching Protocols", 101 },
{ "OK", 200 },
{ "Created", 201 },
{ "Accepted", 202 },
{ "Non-Authoritative Information", 203 },
{ "No Content", 204 },
{ "Reset Content", 205 },
{ "Partial Content", 206 },
{ "Multiple Choices", 300 },
{ "Moved Permanently", 301 },
{ "Found", 302 },
{ "See Other", 303 },
{ "Not Modified", 304 },
{ "Use Proxy", 305 },
{ "Temporary Redirect", 307 },
{ "Bad Request", 400 },
{ "Unauthorized", 401 },
{ "Payment Required", 402 },
{ "Forbidden", 403 },
{ "Not Found", 404 },
{ "Method Not Allowed", 405 },
{ "Not Acceptable", 406 },
{ "Proxy Authentication Required", 407 },
{ "Request Timeout", 408 },
{ "Conflict", 409 },
{ "Gone", 410 },
{ "Length Required", 411 },
{ "Precondition Failed", 412 },
{ "Request Entity Too Large", 413 },
{ "Request-URI Too Long", 414 },
{ "Unsupported Media Type", 415 },
{ "Requested Range Not Satisfiable", 416 },
{ "Expectation Failed", 417 },
{ "Server Internal Error", 500 },
{ "Not Implemented", 501 },
{ "Bad Gateway", 502 },
{ "Service Unavailable", 503 },
{ "Gateway Timeout", 504 },
{ "HTTP Version Not Supported", 505 },
{ 0, 0 },
};
//we gonna create here the list with all the new connections.
static ObjList s_connList;
// the incomming connections listeners list
static ObjList s_listeners;
class YHttpMessage;
class YHttpRequest;
class YHttpResponse;
class Connection;
class HTTPServerThread;
class BodyBuffer: public RefObject, public MemoryStream
{
public:
BodyBuffer(const TelEngine::String& string)
: MemoryStream(DataBlock(const_cast<char*>(string.c_str()), string.length()))
{ }
BodyBuffer(const DataBlock& data)
: MemoryStream(data)
{ }
BodyBuffer(unsigned int length)
{ m_data.resize(length); }
BodyBuffer()
{ }
DataBlock& data()
{ return m_data; }
};
class YHttpMessage: public RefObject
{
YNOCOPY(YHttpMessage); // no automatic copies please
friend class Connection;
public:
YHttpMessage();
const static unsigned long UnknownLength = -1UL;
virtual ~YHttpMessage();
Connection* connection()
{ return m_conn; }
void connection(Connection* conn);
unsigned int contentLength() const
{ return m_contentLength; }
void contentLength(unsigned int cl)
{ m_contentLength = cl; }
const NamedList& headers() const
{ return m_headers; }
template<typename T>
void setHeader(const char* name, T value)
{ m_headers.setParam(name, value); }
template<typename T>
void addHeader(const char* name, T value)
{ m_headers.setParam(name, value); }
String getHeader(const char* name) const
{ return m_headers.getValue(name); }
bool hasHeader(const char* name) const
{ return NULL != m_headers.getParam(name); }
const String& httpVersion() const
{ return m_httpVersion; }
void httpVersion(const String& v)
{ m_httpVersion = v; }
void setBody(const DataBlock& body)
{
BodyBuffer* b = new BodyBuffer(body);
setBody(b, b);
b->deref();
contentLength(body.length());
}
void setBody(const String& body)
{
BodyBuffer* b = new BodyBuffer(body);
setBody(b, b);
b->deref();
contentLength(body.length());
}
void setBody(TelEngine::Stream* strm, TelEngine::RefObject* ref)
{ m_bodyStream = strm; m_bodyObjectRef = ref; }
Stream* bodyStream() const
{ return m_bodyStream; }
private:
NamedList m_headers;
unsigned int m_contentLength;
//RefPointer<Connection> m_conn;
Connection* m_conn;
String m_httpVersion;
TelEngine::Stream* m_bodyStream;
TelEngine::RefPointer<TelEngine::RefObject> m_bodyObjectRef;
};
class YHttpRequest: public YHttpMessage
{
YNOCOPY(YHttpRequest); // no automatic copies please
public:
YHttpRequest(Connection* conn = NULL);
String m_method, m_uri;
public:
bool parse(const char* buf, int len);
void fill(TelEngine::Message& m);
bool bodyExpected() const;
private:
bool parseFirst(String& line);
};
class YHttpResponse: public YHttpMessage
{
YNOCOPY(YHttpResponse); // no automatic copies please
public:
YHttpResponse(Connection* conn = NULL);
int status() const
{ return m_rc; }
void status(int rc)
{ m_rc = rc; m_statusText = lookup(m_rc, s_httpResponseCodes); }
String& statusText()
{ return m_statusText; }
void update(const Message& msg);
bool build(DataBlock& buf);
public:
int m_rc;
String m_statusText;
};
class SockRef : public RefObject
{
public:
inline SockRef(Socket** sock)
: m_sock(sock)
{ }
void* getObject(const String& name) const
{
if (name == YATOM("Socket*"))
return m_sock;
return RefObject::getObject(name);
}
private:
Socket** m_sock;
};
class HTTPServerListener : public RefObject
{
friend class HTTPServerThread;
public:
inline HTTPServerListener(const NamedList& sect)
: m_cfg(sect)
{ }
~HTTPServerListener();
void init();
inline NamedList& cfg()
{ return m_cfg; }
const String& address() const
{ return m_address; }
private:
void run();
bool initSocket();
Connection* checkCreate(Socket* sock, const SocketAddr& sa);
NamedList m_cfg;
Socket m_socket;
String m_address;
};
class HTTPServerThread : public Thread
{
public:
inline HTTPServerThread(HTTPServerListener* listener)
: Thread("HTTPServer Listener"), m_listener(listener)
{ }
virtual void run()
{ m_listener->run(); }
private:
RefPointer<HTTPServerListener> m_listener;
};
class Connection: public RefObject, public Thread
{
public:
enum ConnToken {
KeepAlive = 1,
Close = 2,
TE = 3,
Trailers = 4,
Upgrade = 8,
};
private:
static TokenDict s_connTokens[];
void connectionHeader(const char* hdr);
String connectionHeader();
public:
Connection(Socket* sock, HTTPServerListener* listener);
~Connection();
virtual void* getObject (const String& name) const;
virtual void run();
void runConnection();
inline const String& address() const
{ return m_remote.addr(); }
inline const NamedList& cfg() const
{ return m_listener->cfg(); }
void checkTimer(u_int64_t time);
private:
bool received(unsigned long rlen);
bool readRequestBody(Message& msg);
bool sendResponse(YHttpResponse& rsp);
bool sendErrorResponse(int code);
bool sendData(unsigned int length, unsigned int offset = 0);
void appendMissingErrorResponseBody(YHttpResponse& rsp);
private:
Socket* m_socket;
DataBlock m_rcvBuffer;
DataBlock m_sndBuffer;
SocketAddr m_local, m_remote;
RefPointer<HTTPServerListener> m_listener;
RefPointer<YHttpRequest> m_req;
RefPointer<YHttpResponse> m_rsp;
bool m_keepalive;
unsigned int m_maxRequests;
unsigned int m_maxReqBody;
unsigned int m_maxSendChunkSize;
unsigned int m_timeout;
int/*ConnToken*/ m_connection;
};
class HTTPServer : public Plugin
{
public:
HTTPServer();
~HTTPServer();
virtual void initialize();
virtual bool isBusy() const;
private:
bool m_first;
};
YHttpMessage::YHttpMessage()
: m_headers("HttpHeaders")
, m_contentLength(UnknownLength)
, m_conn(NULL)
, m_httpVersion("1.0")
, m_bodyStream(NULL)
{
XDebug(DebugAll,"YHttpMessage[%p]::YHttpMessage()",this);
}
YHttpMessage::~YHttpMessage()
{
XDebug(DebugAll,"YHttpMessage[%p]::~YHttpMessage()",this);
}
void YHttpMessage::connection(Connection* conn)
{
m_conn = conn;
XDebug(DebugAll,"YHttpMessage[%p]::connection(%p)",this,conn);
}
// XXX from modules/ysipchan.cpp
// Find an empty line in a buffer
// Return the position past it or buffer length + 1 if not found
// NOTE: returned value may be buffer length
static inline unsigned int getEmptyLine(const char* buf, unsigned int len)
{
int count = 0;
unsigned int i = 0;
for (; count < 2 && i < len; i++) {
if (buf[i] == '\r') {
i++;
if (i < len && buf[i] == '\n')
count++;
else
count = 0;
}
else if (buf[i] == '\n')
count++;
else
count = 0;
}
return (count == 2) ? i : len + 1;
}
YHttpRequest::YHttpRequest(Connection* conn /* = NULL*/)
{
if(conn)
connection(conn);
}
void YHttpRequest::fill(Message& m)
{
m.addParam("version", httpVersion());
m.addParam("method", m_method);
m.addParam("uri", m_uri);
unsigned int n = headers().length();
for (unsigned int j = 0; j < n; j++) {
const NamedString* hdr = headers().getParam(j);
if (! hdr)
continue;
m.addParam("hdr_" + hdr->name(), *hdr);
}
}
bool YHttpRequest::bodyExpected() const
{
if (m_method == YSTRING("TRACE"))
return false;
if (hasHeader("Transfer-Encoding") || hasHeader("Content-Length"))
return true;
if (m_method == YSTRING("POST") || m_method == YSTRING("PUT"))
return true;
return false;
}
bool YHttpRequest::parseFirst(String& line)
{
XDebug(DebugAll,"YHttpRequest[%p]::parse firstline= '%s'",this,line.c_str());
if (line.null())
return false;
static Regexp r2("^\\([[:alpha:]]\\+\\)[[:space:]]\\+\\([^[:space:]]\\+\\)[[:space:]]\\+[Hh][Tt][Tt][Pp]/\\([0-9]\\.[0-9]\\+\\)$");
if (! line.matches(r2)) {
Debug(DebugInfo,"Invalid first line '%s'",line.c_str());
return false;
}
// Request: <method> <uri> <version>
m_method = line.matchString(1).toUpper();
m_uri = line.matchString(2);
httpVersion(line.matchString(3).toUpper());
DDebug(DebugAll,"YHttpRequest[%p] got request method='%s' uri='%s' version='%s'",
this, m_method.c_str(), m_uri.c_str(), httpVersion().c_str());
return true;
}
bool YHttpRequest::parse(const char* buf, int len)
{
DDebug(DebugAll,"YHttpRequest[%p]::parse(%p,%d)",this,buf,len);
XDebug(DebugAll,"Request to parse: %s", String(buf,len).c_str());
String* line = MimeBody::getUnfoldedLine(buf, len);
if (line->null())
return false;
if (!parseFirst(*line)) {
line->destruct();
return false;
}
line->destruct();
while (len > 0) {
line = MimeBody::getUnfoldedLine(buf,len);
if (line->null()) {
// Found end of headers
line->destruct();
break;
}
int col = line->find(':');
if (col <= 0) {
line->destruct();
return false;
}
String name = line->substr(0,col);
name.trimBlanks();
if (name.null()) {
line->destruct();
return false;
}
*line >> ":";
line->trimBlanks();
XDebug(DebugAll,"YHttpRequest[%p]::parse header='%s' value='%s'",this,name.c_str(),line->c_str());
#if 0
if ((name &= "WWW-Authenticate") ||
(name &= "Proxy-Authenticate") ||
(name &= "Authorization") ||
(name &= "Proxy-Authorization"))
header.append(new MimeAuthLine(name,*line));
#endif
addHeader(name,*line);
if ((contentLength() == UnknownLength) && (name &= "Content-Length"))
contentLength(line->toLong(-1,10));
line->destruct();
}
if (contentLength() == UnknownLength) { // try to determine boly length
if(strcmp(httpVersion(), "1.0") > 0) {
if(! hasHeader("Transfer-Encoding")) // HTTP1.1: no Transfer-Encoding nor Content-Length => no body
contentLength(0);
}
else if(m_method == YSTRING("GET") || m_method == YSTRING("HEAD")) // HTTP1.0
contentLength(0);
}
DDebug(DebugAll,"YHttpRequest[%p]::parse %d header lines, body %u bytes", this, headers().count(), contentLength());
return true;
}
YHttpResponse::YHttpResponse(Connection* conn /* = NULL*/)
{
if(conn)
connection(conn);
}
void YHttpResponse::update(const Message& msg)
{
contentLength(UnknownLength);
status(msg.getIntValue("status", 200));
String prefix = msg.getValue("ohdr_prefix", "ohdr_");
unsigned int n = msg.length();
for (unsigned int j = 0; j < n; j++) {
const NamedString* hdr = msg.getParam(j);
if (! hdr)
continue;
String tmp = hdr->name();
if (! tmp.startSkip(prefix, false))
continue;
if (tmp == YSTRING("Content-Length")) {
contentLength(hdr->toLong(UnknownLength));
continue;
}
setHeader(tmp, hdr->c_str());
}
}
bool YHttpResponse::build(DataBlock& buf)
{
XDebug(DebugAll,"YHttpResponse[%p]::build: httpVersion=%s status=%d, text='%s'", this, httpVersion().c_str(), status(), m_statusText.c_str());
String firstLine("HTTP/");
firstLine << httpVersion() << " " << status() << " " << m_statusText << "\r\n";
unsigned int n = headers().length();
for (unsigned int j = 0; j < n; j++) {
const NamedString* hdr = headers().getParam(j);
if (! hdr)
continue;
String tmp;
MimeHeaderLine mhl(hdr->name(), *hdr);
mhl.buildLine(tmp);
tmp << "\r\n";
firstLine << tmp;
}
buf.clear();
buf.append(firstLine);
buf.append("\r\n");
return true;
}
/**
* HTTPServerListener
*/
HTTPServerListener::~HTTPServerListener()
{
DDebug("HTTPServer",DebugInfo,"No longer listening '%s' on %s",
m_cfg.c_str(),m_address.c_str());
s_mutex.lock();
s_listeners.remove(this,false);
s_mutex.unlock();
}
void HTTPServerListener::init()
{
if (initSocket()) {
s_mutex.lock();
s_listeners.append(this);
s_mutex.unlock();
}
deref();
}
bool HTTPServerListener::initSocket()
{
// check configuration
int port = m_cfg.getIntValue("port",5038);
const char* host = c_safe(m_cfg.getValue("addr","127.0.0.1"));
if (!(port && *host))
return false;
m_socket.create(AF_INET, SOCK_STREAM);
if (!m_socket.valid()) {
Alarm("HTTPServer","socket",DebugGoOn,"Unable to create the listening socket: %s",
strerror(m_socket.error()));
return false;
}
if (!m_socket.setBlocking(false)) {
Alarm("HTTPServer","socket",DebugGoOn, "Failed to set listener to nonblocking mode: %s",
strerror(m_socket.error()));
return false;
}
SocketAddr sa(AF_INET);
sa.host(host);
sa.port(port);
m_address << sa.host() << ":" << sa.port();
m_socket.setReuse();
if (!m_socket.bind(sa)) {
Alarm("HTTPServer","socket",DebugGoOn,"Failed to bind to %s : %s",
m_address.c_str(),strerror(m_socket.error()));
return false;
}
if (!m_socket.listen(2)) {
Alarm("HTTPServer","socket",DebugGoOn,"Unable to listen on socket: %s",
strerror(m_socket.error()));
return false;
}
Debug("HTTPServer",DebugInfo,"Starting listener '%s' on %s",
m_cfg.c_str(),m_address.c_str());
HTTPServerThread* t = new HTTPServerThread(this);
if (t->startup())
return true;
delete t;
return false;
}
void HTTPServerListener::run()
{
for (;;)
{
Thread::idle(true);
SocketAddr sa;
Socket* as = m_socket.accept(sa);
if (!as) {
if (!m_socket.canRetry())
Debug("HTTPServer",DebugWarn, "Accept error: %s",strerror(m_socket.error()));
continue;
} else {
String addr(sa.host());
if (!checkCreate(as,sa))
Debug("HTTPServer",DebugWarn,"Connection rejected for %s",sa.addr().c_str());
}
}
}
Connection* HTTPServerListener::checkCreate(Socket* sock, const SocketAddr& sa)
{
if (!sock->valid()) {
delete sock;
return 0;
}
int arg = 1;
if (m_cfg.getBoolValue("nodelay",true) &&
!sock->setOption(IPPROTO_TCP, TCP_NODELAY, &arg, sizeof(arg)))
Debug("HTTPServer",DebugMild, "Failed to set tcp socket to TCP_NODELAY mode: %s", strerror(sock->error()));
const NamedString* secure = m_cfg.getParam("sslcontext");
if (TelEngine::null(secure))
secure = 0;
if (secure) {
Message m("socket.ssl");
m.addParam("server",String::boolText(true));
m.addParam("context",*secure);
m.copyParam(m_cfg,"verify");
SockRef* s = new SockRef(&sock);
m.userData(s);
TelEngine::destruct(s);
if (!(Engine::dispatch(m) && sock)) {
Debug("HTTPServer",DebugWarn, "Failed to switch '%s' to SSL for %s '%s'",
cfg().c_str(),secure->name().c_str(),secure->c_str());
delete sock;
return 0;
}
}
else if (!sock->setBlocking(false)) {
Debug("HTTPServer",DebugGoOn, "Failed to set tcp socket to nonblocking mode: %s",
strerror(sock->error()));
delete sock;
return 0;
}
// should check IP address here
Output("Remote%s connection from %s to %s",
(secure ? " secure" : ""),sa.addr().c_str(),m_address.c_str());
Connection* conn = new Connection(sock,this);
if (conn->error()) {
conn->deref();
return 0;
}
conn->startup();
return conn;
}
/**
* Connection
*/
TokenDict Connection::s_connTokens[] = {
{ "keep-alive", KeepAlive },
{ "close", Close },
{ "te", TE },
{ "trailers", Trailers },
{ "upgrade", Upgrade },
{ 0, 0 },
};
Connection::Connection(Socket* sock, HTTPServerListener* listener)
: Thread("HTTPServer connection"),
m_socket(sock),
m_listener(listener),
m_keepalive(false),
m_maxRequests(0),
m_timeout(10)
{
s_mutex.lock();
s_connList.append(this);
s_mutex.unlock();
m_socket->getSockName(m_local);
m_socket->getPeerName(m_remote);
m_maxRequests = cfg().getIntValue("maxrequests", 0);
m_maxReqBody = cfg().getIntValue("maxreqbody", 10 * 1024);
m_timeout = cfg().getIntValue("timeout", 10);
m_maxSendChunkSize = cfg().getIntValue("maxsendchunk", 8192);
if (m_maxSendChunkSize < 10)
m_maxSendChunkSize = 10;
else if (m_maxSendChunkSize > 65535)
m_maxSendChunkSize = 65535; // need to fit into 4 hex digits
}
Connection::~Connection()
{
s_mutex.lock();
s_connList.remove(this,false);
s_mutex.unlock();
Output("Closing connection to %s",m_remote.addr().c_str());
delete m_socket;
m_socket = 0;
}
void* Connection::getObject(const String& name) const
{
XDebug(DebugAll,"Connection[%p]::getObject('%s')", this, name.c_str());
if (name == YATOM("Connection"))
return const_cast<Connection*>(this);
if (name == YATOM("YHttpRequest"))
return m_req;
if (name == YATOM("YHttpResponse"))
return m_rsp;
if (name == YATOM("Socket"))
return m_socket;
if (name == YATOM("HTTPServerListener"))
return m_listener;
return GenObject::getObject(name);
}
void Connection::run()
{
if (!m_socket)
return;
runConnection();
deref();
}
void Connection::runConnection()
{
u_int32_t killtime = Time::secNow() + m_timeout;
while (m_socket && m_socket->valid()) {
Thread::check();
bool readok = false;
bool error = false;
if (m_socket->select(&readok, 0, &error, 10000)) {
if (error) {
Debug("HTTPServer",DebugInfo,"Socket exception condition on %d",m_socket->handle());
/* Can happen when client shuts down it's socket's sending part */
if(m_keepalive)
return;
}
if (!readok) {
if(!m_timeout || Time::secNow() < killtime) {
yield();
continue;
}
Debug("HTTPServer",DebugAll, "Timeout waiting for socket %d", m_socket->handle());
return;
}
DataBlock rbuf(NULL, HDR_BUFFER_SIZE);
int readsize = m_socket->readData(rbuf.data(), rbuf.length());
if (!readsize) {
Debug("HTTPServer",DebugInfo,"Socket condition EOF on %d",m_socket->handle());
return;
}
else if (readsize > 0) {
m_rcvBuffer.append(rbuf.data(), readsize);
if (! received(readsize))
return;
killtime = Time::secNow() + m_timeout;
}
else if (!m_socket->canRetry()) {
Debug("HTTPServer",DebugWarn,"Socket read error %d on %d",errno,m_socket->handle());
return;
}
}
else if (!m_socket->canRetry()) {
Debug("HTTPServer",DebugWarn,"socket select error %d on %d",errno,m_socket->handle());
return;
}
}
}
bool Connection::received(unsigned long rlen)
{
const char * data = (const char*)m_rcvBuffer.data();
unsigned int len = m_rcvBuffer.length();
// Find an empty line
unsigned int bodyOffs = getEmptyLine(data, len);
if (bodyOffs > len)
return true; // not enouth data, but still ok
// Got all headers, start processing request
m_req = new YHttpRequest(this);
m_req->deref();
// Parse the message headers
if(! m_req->parse(data, bodyOffs)) {
String tmp(data, bodyOffs);
Debug("HTTPServer", DebugNote,
"got invalid message [%p]\r\n------\r\n%s\r\n------",
this, tmp.c_str());
return false;
}
if(strcmp(m_req->httpVersion(), "1.0") > 0)
m_keepalive = true;
connectionHeader(m_req->getHeader("Connection"));
Debug("HTTPServer", DebugAll, "Connection flags: %04X", m_connection);
if(m_connection & KeepAlive)
m_keepalive = true;
if(m_connection & Close)
m_keepalive = false;
// Remove processed part from input buffer
m_rcvBuffer.cut(-bodyOffs); // now m_rcvBuffer holds body's beginning
bool bodyExpected = m_req->bodyExpected();
Message m("http.route");
m.userData(this);
m.addParam("server", m_listener->cfg().c_str());
m.addParam("address", m_remote.addr());
m.addParam("ip_host", m_remote.host());
m.addParam("ip_port", String(m_remote.port()));
m.addParam("local", m_local.addr());
m.addParam("local_host", m_local.host());
m.addParam("local_port", String(m_local.port()));
m.addParam("keepalive", String::boolText(m_keepalive));
m.addParam("reqbody", String::boolText(bodyExpected));
m_req->fill(m);
if (Engine::dispatch(m)) {
TelEngine::String rv = m.retValue();
if (rv[0] >= '3' && rv[0] <= '9')
return sendErrorResponse(atoi(rv.c_str())); // XXX TODO add headers from m
m.addParam("handler", rv);
m.retValue() = TelEngine::String::empty();
}
if (m_connection & Upgrade && m_req->hasHeader("Upgrade")) {
m = "http.upgrade";
if (Engine::dispatch(m)) {
RefPointer<RefObject> ref = static_cast<RefObject*>(m.userObject("RefObject"));
Runnable* code = static_cast<Runnable*>(m.userObject("Runnable"));
XDebug("HTTPServer",DebugAll,"Connection[%p] got http.upgrade Runnable response %p", this, code);
if (code) {
m_rsp = new YHttpResponse(this);
m_rsp->deref();
m_rsp->httpVersion(m_req->httpVersion());
m_rsp->update(m);
m_rsp->addHeader("Connection", "Upgrade");
m_rsp->addHeader("Upgrade", "websocket");
m_rsp->status(101);
m_rsp->contentLength(0);
XDebug("HTTPServer",DebugAll,"Connection[%p]: sending 101 response %p", this, (YHttpResponse*)m_rsp);
if(! sendResponse(*m_rsp))
return false;
XDebug("HTTPServer",DebugAll,"Connection[%p]: sent 101 response %p", this, (YHttpResponse*)m_rsp);
m_req = NULL;
m_rsp = NULL;
code->run();
XDebug("HTTPServer",DebugAll,"Connection[%p]: done with upgraded connection", this);
}
return false;
}
else {
//m.delHeader("Upgrade");
m_connection &= ~Upgrade;
}
}
// Dispatch http.prereq in case someone wants to read request body
m = "http.preserve";
if (Engine::dispatch(m)) {
TelEngine::Stream* strm = reinterpret_cast<TelEngine::Stream*>(m.userObject(YATOM("Stream")));
if(strm) {
TelEngine::RefObject* ref = reinterpret_cast<TelEngine::RefObject*>(m.userObject("RefObject"));
XDebug("HTTPServer",DebugInfo,"Connection[%p] got stream response %p, ref %p", this, strm, ref);
m_req->setBody(strm, ref);
}
}
// if noone wants to read request body, lets prepare our own buffer
BodyBuffer* request_body_buffer = NULL;
if (! m_req->bodyStream() && m_req->bodyExpected()) {
request_body_buffer = new BodyBuffer();
m_req->setBody(request_body_buffer, request_body_buffer);
request_body_buffer->deref();
}
// read request body finally
if (bodyExpected && ! readRequestBody(m))
return false; // error response is already sent in readRequestBody()
m_rsp = new YHttpResponse(this);
m_rsp->deref();
m_rsp->httpVersion(m_req->httpVersion());
// Dispatch http.request
m = "http.serve";
m.retValue().clear();
if (request_body_buffer)
m.setParam("content", String(reinterpret_cast<char*>(request_body_buffer->data().data()), request_body_buffer->data().length()));
if (! Engine::dispatch(m)) {
return sendErrorResponse(404);
}
// Keepalive
m_keepalive = m.getBoolValue("keepalive", m_keepalive);
if(! --m_maxRequests)
m_keepalive = false;
if(m_keepalive) {
m_connection &= ~Close;
m_connection |= KeepAlive;
} else {
m_connection &= ~KeepAlive;
m_connection |= Close;
}
// Prepare response
m_rsp->setHeader("Connection", connectionHeader());
m_rsp->update(m);
if (m.retValue().null() || 0 == m.retValue().length()) {
TelEngine::Stream* strm = reinterpret_cast<TelEngine::Stream*>(m.userObject(YATOM("Stream")));
if(strm) {
TelEngine::RefObject* ref = reinterpret_cast<TelEngine::RefObject*>(m.userObject("RefObject"));
XDebug("HTTPServer",DebugInfo,"Connection[%p] got stream response %p, ref %p", this, strm, ref);
m_rsp->setBody(strm, ref);
}
else {
m_rsp->contentLength(0);
appendMissingErrorResponseBody(*m_rsp);
}
}
else {
XDebug("HTTPServer",DebugInfo,"Connection[%p] got simple response <<%s>>", this, m.retValue().c_str());
m_rsp->setBody(m.retValue());
}
// Send response
if(! sendResponse(*m_rsp))
return false;
if(! m_keepalive) {
DDebug("HTTPServer",DebugInfo,"Closing non-keepalive Connection[%p], socket %d",this,m_socket->handle());
m_socket->shutdown(true, true);
return false;
}
// Request complete
XDebug(DebugAll, "RequestComplete, refcounts: req: %d, rsp: %d", m_req ? m_req->refcount() : 0, m_rsp ? m_rsp->refcount() : 0);
m_req = NULL;
m_rsp = NULL;
return true;
}
bool Connection::readRequestBody(Message& msg)
{
unsigned int cl = m_req->contentLength();
bool untilEof = !m_keepalive && cl == YHttpMessage::UnknownLength; // HTTP 0.x request
unsigned int maxBodyBuf = msg.getIntValue("maxreqbody", m_maxReqBody);
if(cl != YHttpMessage::UnknownLength && cl > maxBodyBuf) // request body is too long
return sendErrorResponse(413);
TelEngine::Stream* strm = m_req->bodyStream();
if (! strm) {
Debug("HTTPServer",DebugWarn,"Connection[%p]: no request body buffer (socket %d)",this,m_socket->handle());
return sendErrorResponse(500);
}
if (m_rcvBuffer.length()) { // body part that arrived with headers
XDebug("HTTPServer", DebugAll, "Connection[%p]: readRequestBody: got %u bytes of body together with with headers", this, m_rcvBuffer.length());
if(m_rcvBuffer.length() > maxBodyBuf)
return sendErrorResponse(413);
strm->writeData(m_rcvBuffer);
}
char buf[BODY_BUF_SIZE];
u_int32_t killtime = Time::secNow() + m_timeout;
while(cl) {
int r = m_socket->readData(buf, min(cl, sizeof(buf)));
XDebug("HTTPServer", DebugAll, "Connection[%p]: readRequestBody: read %d bytes, left %d, untilEof=%s, maxBodyBuf=%u", this, r, cl, String::boolText(untilEof), maxBodyBuf);
if(r == 0 && untilEof)
break;
if(r < 0 && m_socket->canRetry() && (!m_timeout || Time::secNow() < killtime)) {
yield();
continue;
}
if(r <= 0)
return sendErrorResponse(400);
if(strm->seek(TelEngine::Stream::SeekCurrent) + r > maxBodyBuf)
return sendErrorResponse(413);
strm->writeData(buf, r);
if(cl != YHttpMessage::UnknownLength)
cl -= r;
}
strm->terminate();
return true;
}
bool Connection::sendData(unsigned int length, unsigned int offset /* = 0 */)
{
unsigned char * pos = m_sndBuffer.data(offset);
u_int32_t killtime = Time::secNow() + m_timeout;
while (m_socket && m_socket->valid()) {
Thread::check();
bool writeok = false;
bool error = false;
if (m_socket->select(0, &writeok, &error, 10000)) {
if (error) {
Debug("HTTPServer",DebugInfo,"Socket exception condition on %d",m_socket->handle());