Add ways to provide the password for encrypted archives.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2965 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

@@ -1,5 +1,9 @@
 Changes in 1.7
 
+ - Support AES-encrypted zip files. Should work with 128, 196, and 256 bit AES. This addition also adds a new PRNG, SHA, and other algorithms to the engine, though no interface is yet added for them. The implementation of the encryption algorithms is provided by Dr Brian Gladman.
+
+ - Added geometry shaders for OpenGL. A first version of the code was submitted by Matthew Kielan (devsh).
+
  - Bugfix: irrArray should no longer crash when using other allocators.
 
  - Add MaterialViewer example.

include/IFileArchive.h

@@ -71,6 +71,13 @@ public:
 
 	//! get the archive type
 	virtual E_FILE_ARCHIVE_TYPE getType() const { return EFAT_UNKNOWN; }
+
+	//! An optionally used password string
+	/** This variable is publicly accessible from the interface in order to
+	avoid single access patterns to this place, and hence allow some more
+	obscurity.
+	*/
+	core::stringc Password;
 };
 
 //! Class which is able to create an archive from a file.

include/IFileSystem.h

@@ -92,26 +92,32 @@ public:
 	virtual IWriteFile* createAndWriteFile(const path& filename, bool append=false) =0;
 
 	//! Adds an archive to the file system.
-	/** After calling this, the Irrlicht Engine will also search and open files directly from this archive.
-	This is useful for hiding data from the end user, speeding up file access and making it possible to
-	access for example Quake3 .pk3 files, which are no different than .zip files.
-	By default Irrlicht supports ZIP, PAK, TAR and directories as archives. You can provide your own archive
-	types by implementing IArchiveLoader and passing an instance to addArchiveLoader.
+	/** After calling this, the Irrlicht Engine will also search and open
+	files directly from this archive. This is useful for hiding data from
+	the end user, speeding up file access and making it possible to access
+	for example Quake3 .pk3 files, which are just renamed .zip files. By
+	default Irrlicht supports ZIP, PAK, TAR, PNK, and directories as
+	archives. You can provide your own archive types by implementing
+	IArchiveLoader and passing an instance to addArchiveLoader.
 	\param filename: Filename of the archive to add to the file system.
 	\param ignoreCase: If set to true, files in the archive can be accessed without
 	writing all letters in the right case.
 	\param ignorePaths: If set to true, files in the added archive can be accessed
 	without its complete path.
-	\param archiveType: If no specific E_FILE_ARCHIVE_TYPE is selected then the type of archive will depend on
-	the extension of the file name. If you use a different extension then you can use this parameter to force
+	\param archiveType: If no specific E_FILE_ARCHIVE_TYPE is selected then
+	the type of archive will depend on the extension of the file name. If
+	you use a different extension then you can use this parameter to force
 	a specific type of archive.
+	\param password An optional password, which is used in case of encrypted archives.
 	\return Returns true if the archive was added successfully, false if not. */
-	virtual bool addFileArchive(const path& filename, bool ignoreCase=true, bool ignorePaths=true,
-		E_FILE_ARCHIVE_TYPE archiveType=EFAT_UNKNOWN) =0;
+	virtual bool addFileArchive(const path& filename, bool ignoreCase=true,
+			bool ignorePaths=true,
+			E_FILE_ARCHIVE_TYPE archiveType=EFAT_UNKNOWN,
+			const core::stringc& password="") =0;
 
 	//! Adds an external archive loader to the engine.
-	/** Use this function to add support for new archive types to the engine, for example propiatrary or
-	encyrpted file storage. */
+	/** Use this function to add support for new archive types to the
+	engine, for example proprietary or encrypted file storage. */
 	virtual void addArchiveLoader(IArchiveLoader* loader) =0;
 
 	//! Returns the number of archives currently attached to the file system

source/Irrlicht/CFileSystem.cpp

@@ -190,7 +190,8 @@ bool CFileSystem::moveFileArchive(u32 sourceIndex, s32 relative)
 
 //! Adds an archive to the file system.
 bool CFileSystem::addFileArchive(const io::path& filename, bool ignoreCase,
-			  bool ignorePaths, E_FILE_ARCHIVE_TYPE archiveType)
+			  bool ignorePaths, E_FILE_ARCHIVE_TYPE archiveType,
+			  const core::stringc& password)
 {
 	IFileArchive* archive = 0;
 	bool ret = false;
@@ -200,7 +201,11 @@ bool CFileSystem::addFileArchive(const io::path& filename, bool ignoreCase,
 	for (i = 0; i < FileArchives.size(); ++i)
 	{
 		if (getAbsolutePath(filename) == FileArchives[i]->getFileList()->getPath())
+		{
+			if (password.size())
+				FileArchives[i]->Password=password;
 			return true;
+		}
 	}
 
 	// do we know what type it should be?
@@ -281,6 +286,8 @@ bool CFileSystem::addFileArchive(const io::path& filename, bool ignoreCase,
 	if (archive)
 	{
 		FileArchives.push_back(archive);
+		if (password.size())
+			archive->Password=password;
 		ret = true;
 	}
 	else

source/Irrlicht/CFileSystem.h

@@ -46,8 +46,10 @@ public:
 	virtual IWriteFile* createAndWriteFile(const io::path& filename, bool append=false);
 
 	//! Adds an archive to the file system.
-	virtual bool addFileArchive(const io::path& filename, bool ignoreCase = true,
-		bool ignorePaths = true, E_FILE_ARCHIVE_TYPE archiveType = EFAT_UNKNOWN);
+	virtual bool addFileArchive(const io::path& filename,
+			bool ignoreCase = true, bool ignorePaths = true,
+			E_FILE_ARCHIVE_TYPE archiveType = EFAT_UNKNOWN,
+			const core::stringc& password="");
 
 	//! move the hirarchy of the filesystem. moves sourceIndex relative up or down
 	virtual bool moveFileArchive( u32 sourceIndex, s32 relative );

source/Irrlicht/CZipReader.cpp

@@ -503,11 +503,10 @@ IReadFile* CZipReader::createAndOpenFile(u32 index)
 		char pwVerificationFile[2];
 		File->read(pwVerification, 2);
 		fcrypt_ctx zctx; // the encryption context
-		const char* Password="0123456789";
 		int rc = fcrypt_init(
 			(e.header.Sig & 0x00ff0000) >>16,
-			(const unsigned char*)Password, // the password
-			strlen(Password), // number of bytes in password
+			(const unsigned char*)Password.c_str(), // the password
+			Password.size(), // number of bytes in password
 			salt, // the salt
 			(unsigned char*)pwVerificationFile, // on return contains password verifier
 			&zctx); // encryption context

source/Irrlicht/CZipReader.h

@@ -231,3 +231,4 @@ namespace io
 
 #endif // __IRR_COMPILE_WITH_ZIP_ARCHIVE_LOADER_
 #endif // __C_ZIP_READER_H_INCLUDED__
+