mirror of
https://github.com/stefanocasazza/ULib.git
synced 2025-10-05 19:18:01 +08:00
453 lines
12 KiB
C++
453 lines
12 KiB
C++
// ============================================================================
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//
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// = LIBRARY
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// ULib - c++ library
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//
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// = FILENAME
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// client_image.h - Handles accepted connections from UServer's client
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//
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// = AUTHOR
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// Stefano Casazza
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//
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// ============================================================================
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#ifndef U_CLIENT_IMAGE_H
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#define U_CLIENT_IMAGE_H 1
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#include <ulib/timeval.h>
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#include <ulib/event/event_fd.h>
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#include <ulib/internal/chttp.h>
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#include <ulib/utility/socket_ext.h>
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#ifdef USE_LIBSSL
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# include <ulib/ssl/certificate.h>
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# include <ulib/ssl/net/sslsocket.h>
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#endif
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/**
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* @class UClientImage
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*
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* @brief Handles accepted connections from UServer's client (A representation of the Server responsible for handling Client instances)
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*/
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class UHTTP;
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class UIPAllow;
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class USSIPlugIn;
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class UHttpPlugIn;
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class UNoCatPlugIn;
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class UServer_Base;
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class UStreamPlugIn;
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template <class T> class UServer;
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#define U_ClientImage_request_is_cached UClientImage_Base::cbuffer[0]
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class U_EXPORT UClientImage_Base : public UEventFd {
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public:
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// SERVICES
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bool genericRead();
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int handlerResponse();
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bool isPendingSendfile()
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{
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U_TRACE(0, "UClientImage_Base::isPendingSendfile()")
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if (count > 0) U_RETURN(true);
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U_RETURN(false);
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}
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// define method VIRTUAL of class UEventFd
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virtual int handlerRead() U_DECL_OVERRIDE;
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virtual int handlerWrite() U_DECL_OVERRIDE;
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virtual int handlerTimeout() U_DECL_OVERRIDE;
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virtual void handlerError() U_DECL_OVERRIDE;
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virtual void handlerDelete() U_DECL_OVERRIDE;
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static void init();
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static void clear();
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static void resetResponse();
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static bool isAllowed(UVector<UIPAllow*>& vallow_IP) __pure; // Check whether the ip address client ought to be allowed
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static const char* getRequestUri(uint32_t& len);
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// manage if other data already available... (pipelining)
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static void resetPipeline()
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{
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U_TRACE(0, "UClientImage_Base::resetPipeline()")
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U_INTERNAL_DUMP("U_ClientImage_pipeline = %b U_ClientImage_parallelization = %d",
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U_ClientImage_pipeline, U_ClientImage_parallelization)
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if (U_ClientImage_pipeline)
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{
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U_INTERNAL_ASSERT(request->same(*rbuffer) == false)
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size_request = 0; // NB: we don't want to process further the read buffer...
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U_ClientImage_pipeline = false;
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}
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}
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static void resetPipelineAndClose()
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{
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U_TRACE(0, "UClientImage_Base::resetPipelineAndClose()")
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// NB: because we close the connection we don't need to process other request in pipeline...
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resetPipeline();
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U_ClientImage_close = true;
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U_INTERNAL_DUMP("U_ClientImage_close = %b", U_ClientImage_close)
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}
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static void resetAndClose()
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{
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U_TRACE(0, "UClientImage_Base::resetAndClose()")
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U_INTERNAL_ASSERT_POINTER(psocket)
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resetPipeline();
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setRequestProcessed();
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psocket->close();
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}
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static void setCloseConnection()
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{
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U_TRACE(0, "UClientImage_Base::setCloseConnection()")
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U_INTERNAL_DUMP("U_ClientImage_pipeline = %b", U_ClientImage_pipeline)
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if (U_ClientImage_pipeline == false) U_ClientImage_close = true;
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U_INTERNAL_DUMP("U_ClientImage_close = %b", U_ClientImage_close)
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}
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// request state processing
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enum RequestStatusType {
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// NOT_FOUND = 0x0000,
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FORBIDDEN = 0x0001,
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NO_CACHE = 0x0002,
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IN_FILE_CACHE = 0x0004,
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ALREADY_PROCESSED = 0x0008
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};
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static bool isRequestNotFound()
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{
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U_TRACE(0, "UClientImage_Base::isRequestNotFound()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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# ifdef U_CACHE_REQUEST_DISABLE
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if (U_ClientImage_request == 0) U_RETURN(true);
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# else
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if ((U_ClientImage_request & ~NO_CACHE) == 0) U_RETURN(true);
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# endif
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U_RETURN(false);
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}
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static void setRequestProcessed()
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{
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U_TRACE(0, "UClientImage_Base::setRequestProcessed()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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if ((U_ClientImage_request & ALREADY_PROCESSED) == 0) U_ClientImage_request |= ALREADY_PROCESSED;
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}
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static void setRequestNeedProcessing()
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{
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U_TRACE(0, "UClientImage_Base::setRequestNeedProcessing()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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U_ClientImage_request &= ~ALREADY_PROCESSED;
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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}
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static bool isRequestNeedProcessing()
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{
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U_TRACE(0, "UClientImage_Base::isRequestNeedProcessing()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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if ((U_ClientImage_request & ALREADY_PROCESSED) == 0) U_RETURN(true);
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U_RETURN(false);
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}
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static bool isRequestAlreadyProcessed()
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{
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U_TRACE(0, "UClientImage_Base::isRequestAlreadyProcessed()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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if ((U_ClientImage_request & ALREADY_PROCESSED) != 0) U_RETURN(true);
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U_RETURN(false);
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}
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static bool isRequestRedirected()
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{
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U_TRACE(0, "UClientImage_Base::isRequestRedirected()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B u_http_info.nResponseCode = %d", U_ClientImage_request,
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U_ClientImage_request, u_http_info.nResponseCode)
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if ((U_ClientImage_request & ALREADY_PROCESSED) != 0 &&
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(u_http_info.nResponseCode == HTTP_MOVED_TEMP ||
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u_http_info.nResponseCode == HTTP_NETWORK_AUTHENTICATION_REQUIRED))
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{
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U_RETURN(true);
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}
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U_RETURN(false);
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}
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static void setRequestForbidden()
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{
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U_TRACE(0, "UClientImage_Base::setRequestForbidden()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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U_ClientImage_request |= FORBIDDEN | ALREADY_PROCESSED;
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}
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static bool isRequestForbidden()
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{
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U_TRACE(0, "UClientImage_Base::isRequestForbidden()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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if ((U_ClientImage_request & FORBIDDEN) != 0) U_RETURN(true);
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U_RETURN(false);
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}
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static void setRequestInFileCache()
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{
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U_TRACE(0, "UClientImage_Base::setRequestInFileCache()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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U_ClientImage_request |= IN_FILE_CACHE | ALREADY_PROCESSED;
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}
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static bool isRequestInFileCache()
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{
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U_TRACE(0, "UClientImage_Base::isRequestInFileCache()")
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U_INTERNAL_DUMP("U_ClientImage_request = %d %B", U_ClientImage_request, U_ClientImage_request)
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if ((U_ClientImage_request & IN_FILE_CACHE) != 0) U_RETURN(true);
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U_RETURN(false);
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}
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static void setRequestNoCache()
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{
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U_TRACE(0, "UClientImage_Base::setRequestNoCache()")
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# ifndef U_CACHE_REQUEST_DISABLE
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U_ClientImage_request |= NO_CACHE;
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# endif
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}
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// DEBUG
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#if defined(U_STDCPP_ENABLE) && defined(DEBUG)
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const char* dump(bool reset) const;
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#endif
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// NB: these are public for plugin access...
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public:
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UString* logbuf; // it is needed for U_SRV_LOG_WITH_ADDR...
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static bool bIPv6;
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static UString* body;
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static UString* rbuffer;
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static UString* wbuffer;
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static UString* request;
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static USocket* psocket;
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static char cbuffer[128];
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static char iov_buffer[64];
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static UString* request_uri;
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static UString* environment;
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static bPF callerHandlerCache;
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static struct iovec iov_vec[4];
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static UClientImage_Base* pthis;
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static iPFpci callerIsValidRequest;
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static vPF callerHandlerEndRequest;
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static uint32_t rstart, size_request, response_len, response_code;
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static iPF callerHandlerRead, callerHandlerRequest, callerHandlerReset;
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// NB: these are for ULib Servlet Page (USP) - USP_PRINTF...
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static UString* _value;
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static UString* _buffer;
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static UString* _encoded;
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protected:
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USocket* socket;
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UString* data_pending;
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uint32_t start, count;
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int sfd, pending_close;
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time_t last_event;
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void set();
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void reset()
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{
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U_TRACE(0, "UClientImage_Base::reset()")
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UEventFd::op_mask = EPOLLIN | EPOLLRDHUP;
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start =
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count = 0;
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sfd = -1;
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}
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static void setSendfile(int _sfd, uint32_t _start, uint32_t _count)
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{
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U_TRACE(0, "UClientImage_Base::setSendfile(%d,%u,%u)", _sfd, _start, _count)
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U_INTERNAL_ASSERT_MAJOR(_count, 0)
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U_INTERNAL_ASSERT_DIFFERS(_sfd, -1)
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pthis->start = _start;
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pthis->count = _count;
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pthis->sfd = _sfd;
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}
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#ifndef U_LOG_DISABLE
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void logRequest();
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#endif
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bool writeResponse();
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bool logCertificate(); // append on log the peer certicate of client ("issuer","serial")
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bool askForClientCertificate();
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static int csfd;
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static UTimeVal* chronometer;
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static bool log_request_partial;
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static long time_between_request, time_run;
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static uint32_t ncount, nrequest, resto, uri_offset, uri_len;
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static void endRequest();
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static bool startRequest();
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static void resetReadBuffer();
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static void resetWriteBuffer();
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static void saveRequestResponse();
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static void manageReadBufferResize(UString& buffer, uint32_t n);
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#ifndef U_CACHE_REQUEST_DISABLE
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static bool isRequestCacheable() __pure;
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#endif
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// COSTRUTTORI
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UClientImage_Base();
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virtual ~UClientImage_Base();
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#ifdef DEBUG
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bool check_memory();
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#endif
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private:
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static int isValidRequest(const char* ptr, int32_t) U_NO_EXPORT;
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UClientImage_Base(const UClientImage_Base&) : UEventFd() {}
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UClientImage_Base& operator=(const UClientImage_Base&) { return *this; }
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friend class UHTTP;
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friend class USSIPlugIn;
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friend class UHttpPlugIn;
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friend class UNoCatPlugIn;
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friend class UServer_Base;
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friend class UStreamPlugIn;
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template <class T> friend class UServer;
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template <class T> friend void u_delete_vector( T* _vec, uint32_t offset, uint32_t n);
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#ifdef DEBUG
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template <class T> friend bool u_check_memory_vector(T* _vec, uint32_t n);
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#endif
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};
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template <class Socket> class U_EXPORT UClientImage : public UClientImage_Base {
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public:
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// COSTRUTTORI
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UClientImage() : UClientImage_Base()
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{
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U_TRACE_REGISTER_OBJECT(0, UClientImage<Socket>, "", 0)
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socket = U_NEW(Socket(UClientImage_Base::bIPv6));
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set();
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}
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virtual ~UClientImage()
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{
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U_TRACE_UNREGISTER_OBJECT(0, UClientImage<Socket>)
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}
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// DEBUG
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#if defined(U_STDCPP_ENABLE) && defined(DEBUG)
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const char* dump(bool _reset) const { return UClientImage_Base::dump(_reset); }
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#endif
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private:
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UClientImage(const UClientImage&) : UClientImage_Base() {}
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UClientImage& operator=(const UClientImage&) { return *this; }
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};
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#ifdef USE_LIBSSL // specializzazione con USSLSocket
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template <> class U_EXPORT UClientImage<USSLSocket> : public UClientImage_Base {
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public:
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UClientImage() : UClientImage_Base()
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{
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U_TRACE_REGISTER_OBJECT(0, UClientImage<USSLSocket>, "", 0)
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socket = U_NEW(USSLSocket(UClientImage_Base::bIPv6, USSLSocket::sctx, true));
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set();
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}
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virtual ~UClientImage()
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{
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U_TRACE_UNREGISTER_OBJECT(0, UClientImage<USSLSocket>)
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}
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// DEBUG
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#if defined(U_STDCPP_ENABLE) && defined(DEBUG)
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const char* dump(bool _reset) const { return UClientImage_Base::dump(_reset); }
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#endif
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private:
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#ifdef U_COMPILER_DELETE_MEMBERS
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UClientImage<USSLSocket>(const UClientImage<USSLSocket>&) = delete;
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UClientImage<USSLSocket>& operator=(const UClientImage<USSLSocket>&) = delete;
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#else
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UClientImage<USSLSocket>(const UClientImage<USSLSocket>&) : UClientImage_Base() {}
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UClientImage<USSLSocket>& operator=(const UClientImage<USSLSocket>&) { return *this; }
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#endif
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};
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#endif
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#endif
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