1 files changed, 112 insertions, 0 deletions
diff --git a/src/HTTPServer/HTTPFormParser.h b/src/HTTPServer/HTTPFormParser.h
new file mode 100644
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+++ b/src/HTTPServer/HTTPFormParser.h
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+
+// HTTPFormParser.h
+
+// Declares the cHTTPFormParser class representing a parser for forms sent over HTTP
+
+
+
+
+#pragma once
+
+#include "MultipartParser.h"
+
+
+
+
+
+// fwd:
+class cHTTPRequest;
+
+
+
+
+
+class cHTTPFormParser :
+	public std::map<AString, AString>,
+	public cMultipartParser::cCallbacks
+{
+public:
+	enum eKind
+	{
+		fpkURL,             ///< The form has been transmitted as parameters to a GET request
+		fpkFormUrlEncoded,  ///< The form has been POSTed or PUT, with Content-Type of "application/x-www-form-urlencoded"
+		fpkMultipart,       ///< The form has been POSTed or PUT, with Content-Type of "multipart/form-data"
+	} ;
+
+	class cCallbacks
+	{
+	public:
+		/// Called when a new file part is encountered in the form data
+		virtual void OnFileStart(cHTTPFormParser & a_Parser, const AString & a_FileName) = 0;
+		
+		/// Called when more file data has come for the current file in the form data
+		virtual void OnFileData(cHTTPFormParser & a_Parser, const char * a_Data, int a_Size) = 0;
+		
+		/// Called when the current file part has ended in the form data
+		virtual void OnFileEnd(cHTTPFormParser & a_Parser) = 0;
+	} ;
+	
+	
+	/// Creates a parser that is tied to a request and notifies of various events using a callback mechanism
+	cHTTPFormParser(cHTTPRequest & a_Request, cCallbacks & a_Callbacks);
+	
+	/// Creates a parser with the specified content type that reads data from a string
+	cHTTPFormParser(eKind a_Kind, const char * a_Data, int a_Size, cCallbacks & a_Callbacks);
+	
+	/// Adds more data into the parser, as the request body is received
+	void Parse(const char * a_Data, int a_Size);
+	
+	/** Notifies that there's no more data incoming and the parser should finish its parsing.
+	Returns true if parsing successful
+	*/
+	bool Finish(void);
+	
+	/// Returns true if the headers suggest the request has form data parseable by this class
+	static bool HasFormData(const cHTTPRequest & a_Request);
+	
+protected:
+	
+	/// The callbacks to call for incoming file data
+	cCallbacks & m_Callbacks;
+
+	/// The kind of the parser (decided in the constructor, used in Parse()
+	eKind m_Kind;
+
+	/// Buffer for the incoming data until it's parsed
+	AString m_IncomingData;
+	
+	/// True if the information received so far is a valid form; set to false on first problem. Further parsing is skipped when false.
+	bool m_IsValid;
+	
+	/// The parser for the multipart data, if used
+	std::auto_ptr<cMultipartParser> m_MultipartParser;
+	
+	/// Name of the currently parsed part in multipart data
+	AString m_CurrentPartName;
+	
+	/// True if the currently parsed part in multipart data is a file
+	bool m_IsCurrentPartFile;
+	
+	/// Filename of the current parsed part in multipart data (for file uploads)
+	AString m_CurrentPartFileName;
+	
+	/// Set to true after m_Callbacks.OnFileStart() has been called, reset to false on PartEnd
+	bool m_FileHasBeenAnnounced;
+	
+	
+	/// Sets up the object for parsing a fpkMultipart request
+	void BeginMultipart(const cHTTPRequest & a_Request);
+	
+	/// Parses m_IncomingData as form-urlencoded data (fpkURL or fpkFormUrlEncoded kinds)
+	void ParseFormUrlEncoded(void);
+	
+	// cMultipartParser::cCallbacks overrides:
+	virtual void OnPartStart (void) override;
+	virtual void OnPartHeader(const AString & a_Key, const AString & a_Value) override;
+	virtual void OnPartData  (const char * a_Data, int a_Size) override;
+	virtual void OnPartEnd   (void) override;
+} ;
+
+
+
+