13 files changed, 372 insertions, 295 deletions

diff --git a/common/advancedDetector.cpp b/common/advancedDetector.cpp
index 8bd019018a..522b24163e 100644
--- a/common/advancedDetector.cpp
+++ b/common/advancedDetector.cpp
@@ -94,6 +94,8 @@ static void upgradeTargetIfNecessary(const Common::ADParams &params) {
 
 			warning("Target upgraded from %s to %s", o->from, o->to);
 
+			// WORKAROUND: Fix for bug #1719463: "DETECTOR: Launching
+			// undefined target adds launcher entry"
 			if (ConfMan.hasKey("id_came_from_command_line")) {
 				warning("Target came from command line. Skipping save");
 			} else {
diff --git a/common/config-manager.cpp b/common/config-manager.cpp
index 044474a927..138fcc201f 100644
--- a/common/config-manager.cpp
+++ b/common/config-manager.cpp
@@ -23,38 +23,13 @@
  *
  */
 
-#if defined(WIN32)
-#include <windows.h>
-// winnt.h defines ARRAYSIZE, but we want our own one...
-#undef ARRAYSIZE
-#endif
-
 #include "common/config-manager.h"
 #include "common/file.h"
 #include "common/util.h"
+#include "common/system.h"
 
 DECLARE_SINGLETON(Common::ConfigManager);
 
-#ifdef __PLAYSTATION2__
-#include "backends/platform/ps2/systemps2.h"
-#endif
-
-#ifdef IPHONE
-#include "backends/platform/iphone/osys_iphone.h"
-#endif
-
-#if defined(UNIX)
-#ifdef MACOSX
-#define DEFAULT_CONFIG_FILE "Library/Preferences/ScummVM Preferences"
-#else
-#define DEFAULT_CONFIG_FILE ".scummvmrc"
-#endif
-#else
-#define DEFAULT_CONFIG_FILE "scummvm.ini"
-#endif
-
-#define MAXLINELEN 256
-
 static bool isValidDomainName(const Common::String &domName) {
 	const char *p = domName.c_str();
 	while (*p && (isalnum(*p) || *p == '-' || *p == '_'))
@@ -85,238 +60,180 @@ ConfigManager::ConfigManager()
 
 
 void ConfigManager::loadDefaultConfigFile() {
-	char configFile[MAXPATHLEN];
-	// GP2X is Linux based but Home dir can be read only so do not use it and put the config in the executable dir.
-	// On the iPhone, the home dir of the user when you launch the app from the Springboard, is /. Which we don't want.
-#if defined(UNIX) && !defined(GP2X) && !defined(IPHONE)
-	const char *home = getenv("HOME");
-	if (home != NULL && strlen(home) < MAXPATHLEN)
-		snprintf(configFile, MAXPATHLEN, "%s/%s", home, DEFAULT_CONFIG_FILE);
-	else
-		strcpy(configFile, DEFAULT_CONFIG_FILE);
-#else
-	#if defined (WIN32) && !defined(_WIN32_WCE) && !defined(__SYMBIAN32__)
-		OSVERSIONINFO win32OsVersion;
-		ZeroMemory(&win32OsVersion, sizeof(OSVERSIONINFO));
-		win32OsVersion.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
-		GetVersionEx(&win32OsVersion);
-		// Check for non-9X version of Windows.
-		if (win32OsVersion.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS) {
-			// Use the Application Data directory of the user profile.
-			if (win32OsVersion.dwMajorVersion >= 5) {
-				if (!GetEnvironmentVariable("APPDATA", configFile, sizeof(configFile)))
-					error("Unable to access application data directory");
-			} else {
-				if (!GetEnvironmentVariable("USERPROFILE", configFile, sizeof(configFile)))
-					error("Unable to access user profile directory");
+	// Open the default config file
+	SeekableReadStream *stream = g_system->openConfigFileForReading();
+	_filename.clear();	// clear the filename to indicate that we are using the default config file
 
-				strcat(configFile, "\\Application Data");
-				CreateDirectory(configFile, NULL);
-			}
-
-			strcat(configFile, "\\ScummVM");
-			CreateDirectory(configFile, NULL);
-			strcat(configFile, "\\" DEFAULT_CONFIG_FILE);
-
-			if (fopen(configFile, "r") == NULL) {
-				// Check windows directory
-				char oldConfigFile[MAXPATHLEN];
-				GetWindowsDirectory(oldConfigFile, MAXPATHLEN);
-				strcat(oldConfigFile, "\\" DEFAULT_CONFIG_FILE);
-				if (fopen(oldConfigFile, "r")) {
-					printf("The default location of the config file (scummvm.ini) in ScummVM has changed,\n");
-					printf("under Windows NT4/2000/XP/Vista. You may want to consider moving your config\n");
-					printf("file from the old default location:\n");
-					printf("%s\n", oldConfigFile);
-					printf("to the new default location:\n");
-					printf("%s\n\n", configFile);
-					strcpy(configFile, oldConfigFile);
-				}
-			}
-		} else {
-			// Check windows directory
-			GetWindowsDirectory(configFile, MAXPATHLEN);
-			strcat(configFile, "\\" DEFAULT_CONFIG_FILE);
-		}
-
-	#elif defined(PALMOS_MODE)
-		strcpy(configFile,"/PALM/Programs/ScummVM/" DEFAULT_CONFIG_FILE);
-	#elif defined(IPHONE)
-		strcpy(configFile, OSystem_IPHONE::getConfigPath());	
-	#elif defined(__PLAYSTATION2__)
-		((OSystem_PS2*)g_system)->makeConfigPath(configFile);
-	#elif defined(__PSP__)
-		strcpy(configFile, "ms0:/" DEFAULT_CONFIG_FILE);
-	#elif defined (__SYMBIAN32__)
-		strcpy(configFile, Symbian::GetExecutablePath());
-		strcat(configFile, DEFAULT_CONFIG_FILE);
-	#else
-		strcpy(configFile, DEFAULT_CONFIG_FILE);
-	#endif
-#endif
+	// ... load it, if available ...
+	if (stream)
+		loadFromStream(*stream);
+	
+	// ... and close it again.
+	delete stream;
 
-	loadConfigFile(configFile);
 	flushToDisk();
 }
 
 void ConfigManager::loadConfigFile(const String &filename) {
-	_appDomain.clear();
-	_gameDomains.clear();
-	_transientDomain.clear();
-
 	_filename = filename;
-	_domainSaveOrder.clear();
-	loadFile(_filename);
-	printf("Using configuration file: %s\n", _filename.c_str());
-}
 
-void ConfigManager::loadFile(const String &filename) {
 	File cfg_file;
-
 	if (!cfg_file.open(filename)) {
 		printf("Creating configuration file: %s\n", filename.c_str());
 	} else {
-		String domain;
-		String comment;
-		int lineno = 0;
-
-		// TODO: Detect if a domain occurs multiple times (or likewise, if
-		// a key occurs multiple times inside one domain).
-
-		while (!cfg_file.eof() && !cfg_file.ioFailed()) {
-			lineno++;
-
-			// Read a line
-			String line;
-			while (line.lastChar() != '\n') {
-				char buf[MAXLINELEN];
-				if (!cfg_file.readLine_NEW(buf, MAXLINELEN))
-					break;
-				line += buf;
+		printf("Using configuration file: %s\n", _filename.c_str());
+		loadFromStream(cfg_file);
+	}
+}
+
+void ConfigManager::loadFromStream(SeekableReadStream &stream) {
+	String domain;
+	String comment;
+	int lineno = 0;
+
+	_appDomain.clear();
+	_gameDomains.clear();
+	_transientDomain.clear();
+	_domainSaveOrder.clear();
+
+	// TODO: Detect if a domain occurs multiple times (or likewise, if
+	// a key occurs multiple times inside one domain).
+
+	while (!stream.eos() && !stream.ioFailed()) {
+		lineno++;
+
+		// Read a line
+		String line;
+		while (line.lastChar() != '\n') {
+			char buf[256];
+			if (!stream.readLine_NEW(buf, 256))
+				break;
+			line += buf;
+		}
+
+		if (line.size() == 0) {
+			// Do nothing
+		} else if (line[0] == '#') {
+			// Accumulate comments here. Once we encounter either the start
+			// of a new domain, or a key-value-pair, we associate the value
+			// of the 'comment' variable with that entity.
+			comment += line;
+		} else if (line[0] == '[') {
+			// It's a new domain which begins here.
+			const char *p = line.c_str() + 1;
+			// Get the domain name, and check whether it's valid (that
+			// is, verify that it only consists of alphanumerics,
+			// dashes and underscores).
+			while (*p && (isalnum(*p) || *p == '-' || *p == '_'))
+				p++;
+
+			if (*p == '\0')
+				error("Config file buggy: missing ] in line %d", lineno);
+			else if (*p != ']')
+				error("Config file buggy: Invalid character '%c' occured in section name in line %d", *p, lineno);
+
+			domain = String(line.c_str() + 1, p);
+
+			// Store domain comment
+			if (domain == kApplicationDomain) {
+				_appDomain.setDomainComment(comment);
+			} else {
+				_gameDomains[domain].setDomainComment(comment);
 			}
+			comment.clear();
 
-			if (line.size() == 0) {
-				// Do nothing
-			} else if (line[0] == '#') {
-				// Accumulate comments here. Once we encounter either the start
-				// of a new domain, or a key-value-pair, we associate the value
-				// of the 'comment' variable with that entity.
-				comment += line;
-			} else if (line[0] == '[') {
-				// It's a new domain which begins here.
-				const char *p = line.c_str() + 1;
-				// Get the domain name, and check whether it's valid (that
-				// is, verify that it only consists of alphanumerics,
-				// dashes and underscores).
-				while (*p && (isalnum(*p) || *p == '-' || *p == '_'))
-					p++;
-
-				switch (*p) {
-				case '\0':
-					error("Config file buggy: missing ] in line %d", lineno);
-					break;
-				case ']':
-					domain = String(line.c_str() + 1, p - (line.c_str() + 1));
-					//domain = String(line.c_str() + 1, p);	// TODO: Pending Common::String changes
-					break;
-				default:
-					error("Config file buggy: Invalid character '%c' occured in domain name in line %d", *p, lineno);
-				}
-
-				// Store domain comment
-				if (domain == kApplicationDomain) {
-					_appDomain.setDomainComment(comment);
-				} else {
-					_gameDomains[domain].setDomainComment(comment);
-				}
-				comment.clear();
-
-				_domainSaveOrder.push_back(domain);
+			_domainSaveOrder.push_back(domain);
+		} else {
+			// This line should be a line with a 'key=value' pair, or an empty one.
+			
+			// Skip leading whitespaces
+			const char *t = line.c_str();
+			while (isspace(*t))
+				t++;
+
+			// Skip empty lines / lines with only whitespace
+			if (*t == 0)
+				continue;
+
+			// If no domain has been set, this config file is invalid!
+			if (domain.empty()) {
+				error("Config file buggy: Key/value pair found outside a domain in line %d", lineno);
+			}
+
+			// Split string at '=' into 'key' and 'value'. First, find the "=" delimeter.
+			const char *p = strchr(t, '=');
+			if (!p)
+				error("Config file buggy: Junk found in line line %d: '%s'", lineno, t);
+
+			// Extract the key/value pair
+			String key(t, p);
+			String value(p + 1);
+			
+			// Trim of spaces
+			key.trim();
+			value.trim();
+
+			// Finally, store the key/value pair in the active domain
+			set(key, value, domain);
+
+			// Store comment
+			if (domain == kApplicationDomain) {
+				_appDomain.setKVComment(key, comment);
 			} else {
-				// This line should be a line with a 'key=value' pair, or an empty one.
-				
-				// Skip leading whitespaces
-				const char *t = line.c_str();
-				while (isspace(*t))
-					t++;
-
-				// Skip empty lines / lines with only whitespace
-				if (*t == 0)
-					continue;
-
-				// If no domain has been set, this config file is invalid!
-				if (domain.empty()) {
-					error("Config file buggy: Key/value pair found outside a domain in line %d", lineno);
-				}
-
-				// Split string at '=' into 'key' and 'value'. First, find the "=" delimeter.
-				const char *p = strchr(t, '=');
-				if (!p)
-					error("Config file buggy: Junk found in line line %d: '%s'", lineno, t);
-
-				// Trim spaces before the '=' to obtain the key
-				const char *p2 = p;
-				while (p2 > t && isspace(*(p2-1)))
-					p2--;
-				String key(t, p2 - t);
-				
-				// Skip spaces after the '='
-				t = p + 1;
-				while (isspace(*t))
-					t++;
-
-				// Trim trailing spaces
-				p2 = t + strlen(t);
-				while (p2 > t && isspace(*(p2-1)))
-					p2--;
-
-				String value(t, p2 - t);
-
-				// Finally, store the key/value pair in the active domain
-				set(key, value, domain);
-
-				// Store comment
-				if (domain == kApplicationDomain) {
-					_appDomain.setKVComment(key, comment);
-				} else {
-					_gameDomains[domain].setKVComment(key, comment);
-				}
-				comment.clear();
+				_gameDomains[domain].setKVComment(key, comment);
 			}
+			comment.clear();
 		}
 	}
 }
 
 void ConfigManager::flushToDisk() {
 #ifndef __DC__
-	DumpFile cfg_file;
+	WriteStream *stream;
 
-	if (!cfg_file.open(_filename)) {
-		warning("Unable to write configuration file: %s", _filename.c_str());
+	if (_filename.empty()) {
+		// Write to the default config file
+		stream = g_system->openConfigFileForWriting();
+		if (!stream)	// If writing to the config file is not possible, do nothing
+			return;
 	} else {
-		// First write the domains in _domainSaveOrder, in that order.
-		// Note: It's possible for _domainSaveOrder to list domains which
-		// are not present anymore.
-		StringList::const_iterator i;
-		for (i = _domainSaveOrder.begin(); i != _domainSaveOrder.end(); ++i) {
-			if (kApplicationDomain == *i) {
-				writeDomain(cfg_file, *i, _appDomain);
-			} else if (_gameDomains.contains(*i)) {
-				writeDomain(cfg_file, *i, _gameDomains[*i]);
-			}
+		DumpFile *dump = new DumpFile();
+		assert(dump);
+
+		if (!dump->open(_filename)) {
+			warning("Unable to write configuration file: %s", _filename.c_str());
+			delete dump;
+			return;
+		}
+		
+		stream = dump;
+	}
+
+	// First write the domains in _domainSaveOrder, in that order.
+	// Note: It's possible for _domainSaveOrder to list domains which
+	// are not present anymore.
+	StringList::const_iterator i;
+	for (i = _domainSaveOrder.begin(); i != _domainSaveOrder.end(); ++i) {
+		if (kApplicationDomain == *i) {
+			writeDomain(*stream, *i, _appDomain);
+		} else if (_gameDomains.contains(*i)) {
+			writeDomain(*stream, *i, _gameDomains[*i]);
 		}
+	}
 
-		DomainMap::const_iterator d;
+	DomainMap::const_iterator d;
 
 
-		// Now write the domains which haven't been written yet
-		if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), kApplicationDomain) == _domainSaveOrder.end())
-			writeDomain(cfg_file, kApplicationDomain, _appDomain);
-		for (d = _gameDomains.begin(); d != _gameDomains.end(); ++d) {
-			if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), d->_key) == _domainSaveOrder.end())
-				writeDomain(cfg_file, d->_key, d->_value);
-		}
+	// Now write the domains which haven't been written yet
+	if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), kApplicationDomain) == _domainSaveOrder.end())
+		writeDomain(*stream, kApplicationDomain, _appDomain);
+	for (d = _gameDomains.begin(); d != _gameDomains.end(); ++d) {
+		if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), d->_key) == _domainSaveOrder.end())
+			writeDomain(*stream, d->_key, d->_value);
 	}
+
+	delete stream;
+
 #endif // !__DC__
 }
 
@@ -324,6 +241,12 @@ void ConfigManager::writeDomain(WriteStream &stream, const String &name, const D
 	if (domain.empty())
 		return;		// Don't bother writing empty domains.
 
+	// WORKAROUND: Fix for bug #1972625 "ALL: On-the-fly targets are
+	// written to the config file": Do not save domains that came from
+	// the command line
+	if (domain.contains("id_came_from_command_line"))
+		return;
+
 	String comment;
 
 	// Write domain comment (if any)
diff --git a/common/config-manager.h b/common/config-manager.h
index bebb59b539..9e5b88a073 100644
--- a/common/config-manager.h
+++ b/common/config-manager.h
@@ -36,7 +36,7 @@
 namespace Common {
 
 class WriteStream;
-
+class SeekableReadStream;
 
 /**
  * The (singleton) configuration manager, used to query & set configuration
@@ -144,19 +144,11 @@ public:
 	bool				hasGameDomain(const String &domName) const;
 	const DomainMap &	getGameDomains() const { return _gameDomains; }
 
-/*
-	TODO: Callback/change notification system
-	typedef void (*ConfigCallback)(const ConstString &key, void *refCon);
-
-	void   registerCallback(ConfigCallback cfgc, void *refCon, const ConstString &key = String::emptyString)
-	void unregisterCallback(ConfigCallback cfgc, const ConstString &key = String::emptyString)
-*/
-
 private:
 	friend class Singleton<SingletonBaseType>;
 	ConfigManager();
 
-	void			loadFile(const String &filename);
+	void			loadFromStream(SeekableReadStream &stream);
 	void			writeDomain(WriteStream &stream, const String &name, const Domain &domain);
 
 	Domain			_transientDomain;
diff --git a/common/file.cpp b/common/file.cpp
index 5b465b5e01..fb837b9499 100644
--- a/common/file.cpp
+++ b/common/file.cpp
@@ -494,6 +494,28 @@ bool DumpFile::open(const String &filename) {
 	return _handle != NULL;
 }
 
+bool DumpFile::open(const FilesystemNode &node) {
+	assert(!_handle);
+
+	if (node.isDirectory()) {
+		warning("File::open: Trying to open a FilesystemNode which is a directory");
+		return false;
+	} /*else if (!node.isReadable() && mode == kFileReadMode) {
+		warning("File::open: Trying to open an unreadable FilesystemNode object for reading");
+		return false;
+	} else if (!node.isWritable() && mode == kFileWriteMode) {
+		warning("File::open: Trying to open an unwritable FilesystemNode object for writing");
+		return false;
+	}*/
+
+	_handle = fopen(node.getPath().c_str(), "wb");
+
+	if (_handle == NULL)
+		debug(2, "File %s not found", node.getName().c_str());
+
+	return _handle != NULL;
+}
+
 void DumpFile::close() {
 	if (_handle)
 		fclose((FILE *)_handle);
@@ -528,5 +550,12 @@ uint32 DumpFile::write(const void *ptr, uint32 len) {
 	return (uint32)fwrite(ptr, 1, len, (FILE *)_handle);
 }
 
+void DumpFile::flush() {
+	assert(_handle);
+	// TODO: Should check the return value of fflush, and if it is non-zero,
+	// check errno and set an error flag.
+	fflush((FILE *)_handle);
+}
+
 
 }	// End of namespace Common
diff --git a/common/file.h b/common/file.h
index 3c2520b07c..3adeb6ff36 100644
--- a/common/file.h
+++ b/common/file.h
@@ -125,7 +125,7 @@ public:
 	virtual ~DumpFile();
 
 	virtual bool open(const String &filename);
-	//virtual bool open(const FilesystemNode &node);
+	virtual bool open(const FilesystemNode &node);
 
 	virtual void close();
 
@@ -148,7 +148,9 @@ public:
 	 */
 	virtual bool eof() const;
 
-	uint32 write(const void *dataPtr, uint32 dataSize);
+	virtual uint32 write(const void *dataPtr, uint32 dataSize);
+
+	virtual void flush();
 };
 
 
diff --git a/common/fs.cpp b/common/fs.cpp
index 7d803dacd4..3f585c6038 100644
--- a/common/fs.cpp
+++ b/common/fs.cpp
@@ -23,10 +23,13 @@
  */
 
 #include "common/util.h"
+#include "common/file.h"
 #include "common/system.h"
 #include "backends/fs/abstract-fs.h"
 #include "backends/fs/fs-factory.h"
 
+//namespace Common {
+
 FilesystemNode::FilesystemNode() {
 }
 
@@ -170,3 +173,41 @@ bool FilesystemNode::lookupFile(FSList &results, const Common::String &p, bool h
 
 	return !results.empty();
 }
+
+Common::SeekableReadStream *FilesystemNode::openForReading() {
+	if (_realNode == 0)
+		return 0;
+#if 0
+	return _realNode->openForReading();
+#else
+	// FIXME: Until we support openForReading in AbstractFilesystemNode,
+	// we just use Common::File.
+	Common::File *confFile = new Common::File();
+	assert(confFile);
+	if (!confFile->open(*this)) {
+		delete confFile;
+		confFile = 0;
+	}
+	return confFile;
+#endif
+}
+
+Common::WriteStream *FilesystemNode::openForWriting() {
+	if (_realNode == 0)
+		return 0;
+#if 0
+	return _realNode->openForWriting();
+#else
+	// FIXME: Until we support openForWriting in AbstractFilesystemNode,
+	// we just use Common::DumpFile.
+	Common::DumpFile *confFile = new Common::DumpFile();
+	assert(confFile);
+	if (!confFile->open(*this)) {
+		delete confFile;
+		confFile = 0;
+	}
+	return confFile;
+#endif
+}
+
+//}	// End of namespace Common
diff --git a/common/fs.h b/common/fs.h
index ed7355cc00..972e0d86af 100644
--- a/common/fs.h
+++ b/common/fs.h
@@ -29,10 +29,18 @@
 #include "common/ptr.h"
 #include "common/str.h"
 
+class AbstractFilesystemNode;
+
+namespace Common {
+	class SeekableReadStream;
+	class WriteStream;
+}
+
 //namespace Common {
 
 class FilesystemNode;
-class AbstractFilesystemNode;
+//class SeekableReadStream;
+//class WriteStream;
 
 /**
  * List of multiple file system nodes. E.g. the contents of a given directory.
@@ -49,22 +57,6 @@ class FSList : public Common::Array<FilesystemNode> {};
  * To this end, we abstract away from paths; implementations can be based on
  * paths (and it's left to them whether / or \ or : is the path separator :-);
  * but it is also possible to use inodes or vrefs (MacOS 9) or anything else.
- *
- * NOTE: Backends still have to provide a way to extract a path from a FSIntern
- *
- * You may ask now: "isn't this cheating? Why do we go through all this when we use
- * a path in the end anyway?!?".
- * Well, for once as long as we don't provide our own file open/read/write API, we
- * still have to use fopen(). Since all our targets already support fopen(), it should
- * be possible to get a fopen() compatible string for any file system node.
- *
- * Secondly, with this abstraction layer, we still avoid a lot of complications based on
- * differences in FS roots, different path separators, or even systems with no real
- * paths (MacOS 9 doesn't even have the notion of a "current directory").
- * And if we ever want to support devices with no FS in the classical sense (Palm...),
- * we can build upon this.
- *
- * This class acts as a wrapper around the AbstractFilesystemNode class defined in backends/fs.
  */
 class FilesystemNode {
 private:
@@ -108,9 +100,9 @@ public:
 	bool operator<(const FilesystemNode& node) const;
 
 	/**
-	 * Indicates whether the object referred by this path exists in the filesystem or not.
+	 * Indicates whether the object referred by this node exists in the filesystem or not.
 	 *
-	 * @return bool true if the path exists, false otherwise.
+	 * @return bool true if the node exists, false otherwise.
 	 */
 	virtual bool exists() const;
 
@@ -168,7 +160,7 @@ public:
 	FilesystemNode getParent() const;
 
 	/**
-	 * Indicates whether the path refers to a directory or not.
+	 * Indicates whether the node refers to a directory or not.
 	 *
 	 * @todo Currently we assume that a node that is not a directory
 	 * automatically is a file (ignoring things like symlinks or pipes).
@@ -179,28 +171,28 @@ public:
 	virtual bool isDirectory() const;
 
 	/**
-	 * Indicates whether the object referred by this path can be read from or not.
+	 * Indicates whether the object referred by this node can be read from or not.
 	 *
-	 * If the path refers to a directory, readability implies being able to read
+	 * If the node refers to a directory, readability implies being able to read
 	 * and list the directory entries.
 	 *
-	 * If the path refers to a file, readability implies being able to read the
+	 * If the node refers to a file, readability implies being able to read the
 	 * contents of the file.
 	 *
-	 * @return bool true if the object can be read, false otherwise.
+	 * @return true if the object can be read, false otherwise.
 	 */
 	virtual bool isReadable() const;
 
 	/**
-	 * Indicates whether the object referred by this path can be written to or not.
+	 * Indicates whether the object referred by this node can be written to or not.
 	 *
-	 * If the path refers to a directory, writability implies being able to modify
+	 * If the node refers to a directory, writability implies being able to modify
 	 * the directory entry (i.e. rename the directory, remove it or write files inside of it).
 	 *
-	 * If the path refers to a file, writability implies being able to write data
+	 * If the node refers to a file, writability implies being able to write data
 	 * to the file.
 	 *
-	 * @return bool true if the object can be written to, false otherwise.
+	 * @return true if the object can be written to, false otherwise.
 	 */
 	virtual bool isWritable() const;
 
@@ -221,6 +213,25 @@ public:
 	 * @return true if matches could be found, false otherwise.
 	 */
 	virtual bool lookupFile(FSList &results, const Common::String &pattern, bool hidden, bool exhaustive, int depth = -1) const;
+	
+	
+	/**
+	 * Creates a SeekableReadStream instance corresponding to the file
+	 * referred by this node. This assumes that the node actually refers
+	 * to a readable file. If this is not the case, 0 is returned.
+	 *
+	 * @return pointer to the stream object, 0 in case of a failure
+	 */
+	virtual Common::SeekableReadStream *openForReading();
+
+	/**
+	 * Creates a WriteStream instance corresponding to the file
+	 * referred by this node. This assumes that the node actually refers
+	 * to a readable file. If this is not the case, 0 is returned.
+	 *
+	 * @return pointer to the stream object, 0 in case of a failure
+	 */
+	virtual Common::WriteStream *openForWriting();
 };
 
 //} // End of namespace Common
diff --git a/common/hashmap.h b/common/hashmap.h
index ab6e737d74..69f367de97 100644
--- a/common/hashmap.h
+++ b/common/hashmap.h
@@ -58,21 +58,19 @@
 #include "common/str.h"
 #include "common/util.h"
 
-// FIXME: Since this define is very system dependant, 
-// it should be moved to the appropriate H file instead.
-// Portdefs might be a good location for example
-#if !defined(__SYMBIAN32__)
 #define USE_HASHMAP_MEMORY_POOL
-#endif
-
 #ifdef USE_HASHMAP_MEMORY_POOL
 #include "common/memorypool.h"
 // FIXME: we sadly can't assume standard C++ to be present
 // on every system we support, so we should get rid of this.
 // The solution should be to write a simple placement new
 // on our own.
+
+// Symbian does not have <new> but the new operator 
+#if !defined(__SYMBIAN32__) 
 #include <new>
 #endif
+#endif
 
 namespace Common {
 
diff --git a/common/savefile.h b/common/savefile.h
index f30ddfc160..d44f946d48 100644
--- a/common/savefile.h
+++ b/common/savefile.h
@@ -39,27 +39,14 @@ namespace Common {
  * That typically means "save games", but also includes things like the
  * IQ points in Indy3.
  */
-class InSaveFile : public SeekableReadStream {};
+typedef SeekableReadStream InSaveFile;
 
 /**
  * A class which allows game engines to save game state data.
  * That typically means "save games", but also includes things like the
  * IQ points in Indy3.
  */
-class OutSaveFile : public WriteStream {
-public:
-	/**
-	 * Close this savefile, to be called right before destruction of this
-	 * savefile. The idea is that this ways, I/O errors that occur
-	 * during closing/flushing of the file can still be handled by the
-	 * game engine.
-	 *
-	 * By default, this just flushes the stream.
-	 */
-	virtual void finalize() {
-		flush();
-	}
-};
+typedef WriteStream OutSaveFile;
 
 
 /**
diff --git a/common/stream.h b/common/stream.h
index d07579c2d1..01a946e685 100644
--- a/common/stream.h
+++ b/common/stream.h
@@ -78,6 +78,22 @@ public:
 	 */
 	virtual void flush() {}
 
+	/**
+	 * Finalize and close this stream. To be called right before this
+	 * stream instance is deleted. The goal here is to enable calling
+	 * code to detect and handle I/O errors which might occur when
+	 * closing (and this flushing, if buffered) the stream.
+	 *
+	 * After this method has been called, no further writes may be
+	 * peformed on the stream. Calling ioFailed() is allowed.
+	 *
+	 * By default, this just flushes the stream.
+	 */
+	virtual void finalize() {
+		flush();
+	}
+
+
 	// The remaining methods all have default implementations; subclasses
 	// need not (and should not) overload them.
 
diff --git a/common/system.cpp b/common/system.cpp
index 8d528258f4..d0548cdd2d 100644
--- a/common/system.cpp
+++ b/common/system.cpp
@@ -28,12 +28,9 @@
 
 #include "common/config-manager.h"
 #include "common/system.h"
-#include "common/timer.h"
-#include "common/util.h"
 
 #include "graphics/colormasks.h"
 #include "gui/message.h"
-#include "sound/mixer.h"
 
 OSystem *g_system = 0;
 
@@ -121,3 +118,60 @@ void OSystem::clearScreen() {
 	memset(screen->pixels, 0, screen->h * screen->pitch);
 	unlockScreen();
 }
+
+
+/*
+FIXME: The config file loading code below needs to be cleaned up.
+ Port specific variants should be pushed into the respective ports.
+
+ Ideally, the default OSystem::openConfigFileForReading/Writing methods
+ should be removed completely. 
+*/
+
+#include "common/file.h"
+
+#ifdef __PLAYSTATION2__
+#include "backends/platform/ps2/systemps2.h"
+#endif
+
+#ifdef IPHONE
+#include "backends/platform/iphone/osys_iphone.h"
+#endif
+
+
+#if defined(UNIX)
+#define DEFAULT_CONFIG_FILE ".scummvmrc"
+#else
+#define DEFAULT_CONFIG_FILE "scummvm.ini"
+#endif
+
+static Common::String getDefaultConfigFileName() {
+	char configFile[MAXPATHLEN];
+#if defined(PALMOS_MODE)
+	strcpy(configFile,"/PALM/Programs/ScummVM/" DEFAULT_CONFIG_FILE);
+#elif defined(IPHONE)
+	strcpy(configFile, OSystem_IPHONE::getConfigPath());
+#elif defined(__PLAYSTATION2__)
+	((OSystem_PS2*)g_system)->makeConfigPath(configFile);
+#elif defined(__PSP__)
+	strcpy(configFile, "ms0:/" DEFAULT_CONFIG_FILE);
+#else
+	strcpy(configFile, DEFAULT_CONFIG_FILE);
+#endif
+
+	return configFile;
+}
+
+Common::SeekableReadStream *OSystem::openConfigFileForReading() {
+	FilesystemNode file(getDefaultConfigFileName());
+	return file.openForReading();
+}
+
+Common::WriteStream *OSystem::openConfigFileForWriting() {
+#ifdef __DC__
+	return 0;
+#else
+	FilesystemNode file(getDefaultConfigFileName());
+	return file.openForWriting();
+#endif
+}
diff --git a/common/system.h b/common/system.h
index b895a5cfba..501d0802fd 100644
--- a/common/system.h
+++ b/common/system.h
@@ -44,6 +44,8 @@ namespace Common {
 	class EventManager;
 	class SaveFileManager;
 	class TimerManager;
+	class SeekableReadStream;
+	class WriteStream;
 }
 
 class FilesystemFactory;
@@ -900,10 +902,25 @@ public:
 	/**
 	 * Returns the FilesystemFactory object, depending on the current architecture.
 	 *
-	 * @return FilesystemFactory* The specific factory for the current architecture.
+	 * @return the FSNode factory for the current architecture
 	 */
 	virtual FilesystemFactory *getFilesystemFactory() = 0;
 
+	/**
+	 * Open the default config file for reading, by returning a suitable
+	 * ReadStream instance. It is the callers responsiblity to delete
+	 * the stream after use.
+	 */
+	virtual Common::SeekableReadStream *openConfigFileForReading();
+
+	/**
+	 * Open the default config file for writing, by returning a suitable
+	 * WriteStream instance. It is the callers responsiblity to delete
+	 * the stream after use.
+	 *
+	 * May return 0 to indicate that writing to config file is not possible.
+	 */
+	virtual Common::WriteStream *openConfigFileForWriting();
 
 	/**
 	 * Return String which is used for backend-specific addition to theme
diff --git a/common/unarj.cpp b/common/unarj.cpp
index da88c11fc9..9a7766a41f 100644
--- a/common/unarj.cpp
+++ b/common/unarj.cpp
@@ -75,7 +75,7 @@ static uint32 GetCRC(byte *data, int len) {
 	return CRC ^ 0xFFFFFFFF;
 }
 
-ArjFile::ArjFile() {
+ArjFile::ArjFile() : _uncompressedData(NULL) {
 	InitCRC();
 	_isOpen = false;
 	_fallBack = false;
@@ -256,6 +256,11 @@ bool ArjFile::open(const Common::String &filename) {
 	_compsize = hdr->compSize;
 	_origsize = hdr->origSize;
 
+	// FIXME: This hotfix prevents Drascula from leaking memory.
+	// As far as sanity checks go this is not bad, but the engine should be fixed.
+	if (_uncompressedData)
+		free(_uncompressedData);
+
 	_uncompressedData = (byte *)malloc(_origsize);
 	_outstream = new MemoryWriteStream(_uncompressedData, _origsize);