1 files changed, 118 insertions, 0 deletions
diff --git a/src/HTTPServer/HTTPResponseParser.h b/src/HTTPServer/HTTPResponseParser.h
new file mode 100644
index 000000000..19652ccef
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+++ b/src/HTTPServer/HTTPResponseParser.h
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+
+// HTTPResponseParser.h
+
+// Declares the cHTTPResponseParser class representing the parser for incoming HTTP responses
+
+
+
+
+#pragma once
+
+#include "HTTPMessage.h"
+#include "TransferEncodingParser.h"
+
+
+
+
+
+class cHTTPResponseParser:
+	public cHTTPMessage,
+	protected cEnvelopeParser::cCallbacks,
+	protected cTransferEncodingParser::cCallbacks
+{
+	typedef cHTTPMessage Super;
+
+public:
+	class cCallbacks
+	{
+	public:
+		// Force a virtual destructor in descendants:
+		virtual ~cCallbacks() {}
+
+		/** Called when an error has occured while parsing. */
+		virtual void OnError(const AString & a_ErrorDescription) = 0;
+
+		/** Called when the status line is fully parsed. */
+		virtual void OnStatusLine(const AString & a_StatusLine) = 0;
+
+		/** Called when a single header line is parsed. */
+		virtual void OnHeaderLine(const AString & a_Key, const AString & a_Value) = 0;
+
+		/** Called when all the headers have been parsed. */
+		virtual void OnHeadersFinished(void) = 0;
+
+		/** Called for each chunk of the incoming body data. */
+		virtual void OnBodyData(const void * a_Data, size_t a_Size) = 0;
+
+		/** Called when the entire body has been reported by OnBodyData(). */
+		virtual void OnBodyFinished(void) = 0;
+	};
+
+	cHTTPResponseParser(cCallbacks & a_Callbacks);
+
+	/** Parses the incoming data and calls the appropriate callbacks.
+	Returns the number of bytes from the end of a_Data that is already not part of this response.
+	Returns AString::npos on an error. */
+	size_t Parse(const char * a_Data, size_t a_Size);
+
+	/** Called when the server indicates no more data will be sent (HTTP 1.0 socket closed).
+	Finishes all parsing and calls apropriate callbacks (error if incomplete response). */
+	void Finish(void);
+
+	/** Returns true if the entire response has been already parsed. */
+	bool IsFinished(void) const { return m_IsFinished; }
+
+
+protected:
+
+	/** The callbacks used for reporting. */
+	cCallbacks & m_Callbacks;
+
+	/** Set to true if an error has been encountered by the parser. */
+	bool m_HasHadError;
+
+	/** True if the parser is still parsing the status or headers. */
+	bool m_IsInHeaders;
+
+	/** True if the response has been fully parsed. */
+	bool m_IsFinished;
+
+	/** The complete status line of the response. Empty if not parsed yet. */
+	AString m_StatusLine;
+
+	/** Buffer for the incoming data until the status line is parsed. */
+	AString m_Buffer;
+
+	/** Parser for the envelope data (headers) */
+	cEnvelopeParser m_EnvelopeParser;
+
+	/** The specific parser for the transfer encoding used by this response. */
+	cTransferEncodingParserPtr m_TransferEncodingParser;
+
+
+	/** Parses the status line out of the m_Buffer.
+	Removes the status line from m_Buffer, if appropriate.
+	Returns true if the entire status line has been parsed. */
+	bool ParseStatusLine(void);
+
+	/** Parses the message body.
+	Processes transfer encoding and calls the callbacks for body data.
+	Returns the number of bytes from the end of a_Data that is already not part of this response.
+	Returns AString::npos on error. */
+	size_t ParseBody(const char * a_Data, size_t a_Size);
+
+	/** Called internally when the headers-parsing has just finished. */
+	void HeadersFinished(void);
+
+	// cEnvelopeParser::cCallbacks overrides:
+	virtual void OnHeaderLine(const AString & a_Key, const AString & a_Value) override;
+
+	// cTransferEncodingParser::cCallbacks overrides:
+	virtual void OnError(const AString & a_ErrorDescription) override;
+	virtual void OnBodyData(const void * a_Data, size_t a_Size) override;
+	virtual void OnBodyFinished(void) override;
+};
+
+
+
+