shithub: ft2-clone

--- a/src/ft2_config.c

+++ b/src/ft2_config.c

@@ -33,16 +33,13 @@

 #include "ft2_bmp.h"

 #include "ft2_structs.h"

-// globals

-config_t config;

-config_t *defConfig = (config_t *)defConfigData;

+config_t config; // globalized

-// hide POSIX warnings

-#ifdef _MSC_VER

+#ifdef _MSC_VER // hide POSIX warnings

 #pragma warning(disable: 4996)

 #endif

-uint8_t configBuffer[CONFIG_FILE_SIZE];

+static uint8_t configBuffer[CONFIG_FILE_SIZE];

 static void xorConfigBuffer(uint8_t *ptr8)

@@ -50,7 +47,7 @@

 		ptr8[i] ^= i*7;

-static int32_t calcChecksum(uint8_t *p, uint16_t len) // for nibbles highscore data

+static int32_t calcChecksum(const uint8_t *p, uint16_t len) // for Nibbles highscore data

 	if (len == 0)

 		return 0;

@@ -58,13 +55,12 @@

 	uint16_t data = 0;

 	uint32_t checksum = 0;

-	do

+	for (uint16_t i = len; i > 0; i--)

-		data = ((data | *p++) + len) ^ len;

+		data = ((data | *p++) + i) ^ i;

 		checksum += data;

 		data <<= 8;

-	while (--len != 0);

 	return checksum;

@@ -71,27 +67,25 @@

 static void loadConfigFromBuffer(void)

-	int32_t i;

 	lockMixerCallback();

 	memcpy(&config, configBuffer, CONFIG_FILE_SIZE);

-	// if Nibbles highscore table checksum is incorrect, load default highscore table instead

-	const int32_t checksum = calcChecksum((uint8_t *)&config.NI_HighScore, sizeof (config.NI_HighScore));

-	if (config.NI_HighScoreChecksum != checksum)

-	{

+	// if Nibbles highscore checksum is incorrect, load default highscores instead

+	const int32_t newChecksum = calcChecksum((uint8_t *)&config.NI_HighScore, sizeof (config.NI_HighScore));

+	if (newChecksum != config.NI_HighScoreChecksum)

 		memcpy(&config.NI_HighScore, &defConfigData[636], sizeof (config.NI_HighScore));

-		for (i = 0; i < 10; i++)

-		{

-			config.NI_HighScore[i].name[21] = '\0';

-			if (config.NI_HighScore[i].nameLen > 21)

-				config.NI_HighScore[i].nameLen = 21;

-		}

+	// sanitize Nibbles highscore names

+	for (int32_t i = 0; i < 10; i++)

+	{

+		config.NI_HighScore[i].name[21] = '\0';

+		if (config.NI_HighScore[i].nameLen > 21)

+			config.NI_HighScore[i].nameLen = 21;

 	// clamp user palette values

-	for (i = 0; i < 16; i++)

+	for (int32_t i = 0; i < 16; i++)

 		config.userPal->r = palMax(config.userPal->r);

 		config.userPal->g = palMax(config.userPal->g);

@@ -206,7 +200,7 @@

 void resetConfig(void)

-	if (okBox(2, "System request", "Are you sure you want to completely reset your FT2 configuration?") != 1)

+	if (okBox(2, "System request", "Are you sure you want to reset your FT2 configuration?") != 1)

 		return;

 	const uint8_t oldWindowFlags = config.windowFlags;

@@ -278,8 +272,8 @@

 		return false;

-	FILE *in = UNICHAR_FOPEN(editor.configFileLocation, "rb");

-	if (in == NULL)

+	FILE *f = UNICHAR_FOPEN(editor.configFileLocation, "rb");

+	if (f == NULL)

 		if (showErrorFlag)

 			okBox(0, "System message", "Error opening config file for reading!");

@@ -287,23 +281,14 @@

 		return false;

-	fseek(in, 0, SEEK_END);

-	const size_t fileSize = ftell(in);

-	rewind(in);

+	fseek(f, 0, SEEK_END);

+	const size_t fileSize = ftell(f);

+	rewind(f);

-	if (fileSize > CONFIG_FILE_SIZE)

-	{

-		fclose(in);

-		if (showErrorFlag)

-			okBox(0, "System message", "Error loading config: the config file is not valid!");

-		return false;

-	}

-	// not a valid FT2 config file (FT2.CFG filesize varies depending on version)

+	// check if it's a valid FT2 config file (FT2.CFG filesize varies depending on version)

 	if (fileSize < 1732 || fileSize > CONFIG_FILE_SIZE)

-		fclose(in);

+		fclose(f);

 		if (showErrorFlag)

 			okBox(0, "System message", "Error loading config: the config file is not valid!");

@@ -310,13 +295,13 @@

 		return false;

-	if (fileSize < CONFIG_FILE_SIZE)

+	if (fileSize < CONFIG_FILE_SIZE) // old version, make sure unloaded entries are zeroed out

 		memset(configBuffer, 0, CONFIG_FILE_SIZE);

 	// read to config buffer and close file handle

-	if (fread(configBuffer, fileSize, 1, in) != 1)

+	if (fread(configBuffer, fileSize, 1, f) != 1)

-		fclose(in);

+		fclose(f);

 		if (showErrorFlag)

 			okBox(0, "System message", "Error opening config file for reading!");

@@ -323,10 +308,9 @@

 		return false;

-	fclose(in);

+	fclose(f);

-	// decrypt config buffer

-	xorConfigBuffer(configBuffer);

+	xorConfigBuffer(configBuffer); // decrypt config buffer

 	if (memcmp(&configBuffer[0], CFG_ID_STR, 35) != 0)

@@ -378,16 +362,15 @@

 	saveAudioDevicesToConfig(audio.currOutputDevice, audio.currInputDevice);

 #ifdef HAS_MIDI

 	saveMidiInputDeviceToConfig();

 #endif

-	FILE *out = UNICHAR_FOPEN(editor.configFileLocation, "wb");

-	if (out == NULL)

+	FILE *f = UNICHAR_FOPEN(editor.configFileLocation, "wb");

+	if (f == NULL)

 		if (showErrorFlag)

-			okBox(0, "System message", "General I/O error during saving! Is the file in use?");

+			okBox(0, "System message", "General I/O error during config saving! Is the file in use?");

 		return false;

@@ -404,23 +387,21 @@

 	// copy over user palette

 	memcpy(config.userPal, palTable[11], sizeof (pal16) * 16);

+	// copy config to buffer and encrypt it

 	memcpy(configBuffer, &config, CONFIG_FILE_SIZE);

-	// encrypt config buffer

 	xorConfigBuffer(configBuffer);

-	// write config buffer and close file handle

-	if (fwrite(configBuffer, 1, CONFIG_FILE_SIZE, out) != CONFIG_FILE_SIZE)

+	if (fwrite(configBuffer, 1, CONFIG_FILE_SIZE, f) != CONFIG_FILE_SIZE)

-		fclose(out);

+		fclose(f);

 		if (showErrorFlag)

-			okBox(0, "System message", "General I/O error during saving! Is the file in use?");

+			okBox(0, "System message", "General I/O error during config saving! Is the file in use?");

 		return false;

-	fclose(out);

+	fclose(f);

 	return true;

@@ -499,17 +480,12 @@

 static void setConfigFileLocation(void) // kinda hackish

-	int32_t ft2DotCfgStrLen;

-	FILE *f;

 	// Windows

 #ifdef _WIN32

-	UNICHAR *tmpPath, *oldPath;

+	int32_t ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN(L"FT2.CFG");

-	ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN(L"FT2.CFG");

-	oldPath = (UNICHAR *)calloc(PATH_MAX + 8 + 2, sizeof (UNICHAR));

-	tmpPath = (UNICHAR *)calloc(PATH_MAX + 8 + 2, sizeof (UNICHAR));

+	UNICHAR *oldPath = (UNICHAR *)calloc(PATH_MAX + 8 + 2, sizeof (UNICHAR));

+	UNICHAR *tmpPath = (UNICHAR *)calloc(PATH_MAX + 8 + 2, sizeof (UNICHAR));

 	editor.configFileLocation = (UNICHAR *)calloc(PATH_MAX + ft2DotCfgStrLen + 2, sizeof (UNICHAR));

 	if (oldPath == NULL || tmpPath == NULL || editor.configFileLocation == NULL)

@@ -535,7 +511,9 @@

 	UNICHAR_STRCPY(editor.configFileLocation, oldPath);

-	if ((f = fopen("FT2.CFG", "rb")) == NULL)

+	FILE *f = fopen("FT2.CFG", "rb");

+	if (f == NULL) // FT2.CFG not found in current dir, try default config dir

 		int32_t result = SHGetFolderPathW(NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT, tmpPath);

 		if (result == S_OK)

@@ -567,7 +545,7 @@

 	// OS X / macOS

 #elif defined __APPLE__

-	ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN("FT2.CFG");

+	int32_t ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN("FT2.CFG");

 	editor.configFileLocation = (UNICHAR *)calloc(PATH_MAX + ft2DotCfgStrLen + 2, sizeof (UNICHAR));

 	if (editor.configFileLocation == NULL)

@@ -584,7 +562,8 @@

 		return;

-	if ((f = fopen("FT2.CFG", "rb")) == NULL)

+	FILE *f = fopen("FT2.CFG", "rb");

+	if (f == NULL) // FT2.CFG not found in current dir, try default config dir

 		if (chdir(getenv("HOME")) == 0)

@@ -612,7 +591,7 @@

 	// Linux etc

 #else

-	ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN("FT2.CFG");

+	int32_t ft2DotCfgStrLen = (int32_t)UNICHAR_STRLEN("FT2.CFG");

 	editor.configFileLocation = (UNICHAR *)calloc(PATH_MAX + ft2DotCfgStrLen + 2, sizeof (UNICHAR));

 	if (editor.configFileLocation == NULL)

@@ -629,29 +608,31 @@

 		return;

-	if ((f = fopen("FT2.CFG", "rb")) == NULL)

+	FILE *f = fopen("FT2.CFG", "rb");

+	if (f == NULL) // FT2.CFG not found in current dir, try default config dir

-		if (chdir(getenv("HOME")) == 0)

+		int32_t result = -1;

+		// try to use $XDG_CONFIG_HOME first. If not set, use $HOME

+		const char *xdgConfigHome = getenv("XDG_CONFIG_HOME");

+		const char *home = getenv("HOME");

+		if (xdgConfigHome != NULL)

+			result = chdir(xdgConfigHome);

+		else if (home != NULL && chdir(home) == 0)

+			result = chdir(".config");

+		if (result == 0)

-			int32_t result = chdir(".config");

+			result = chdir("FT2 clone");

 			if (result != 0)

-				mkdir(".config", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

-				result = chdir(".config");

+				mkdir("FT2 clone", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

+				result = chdir("FT2 clone");

 			if (result == 0)

-			{

-				result = chdir("FT2 clone");

-				if (result != 0)

-				{

-					mkdir("FT2 clone", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

-					result = chdir("FT2 clone");

-				}

-				if (result == 0)

-					getcwd(editor.configFileLocation, PATH_MAX - ft2DotCfgStrLen - 1);

-			}

+				getcwd(editor.configFileLocation, PATH_MAX - ft2DotCfgStrLen - 1);

 	else

@@ -669,7 +650,6 @@

 void loadConfigOrSetDefaults(void)

 	setConfigFileLocation();

 	if (editor.configFileLocation == NULL)

 		setDefaultConfigSettings();

@@ -676,21 +656,21 @@

 		return;

-	FILE *in = UNICHAR_FOPEN(editor.configFileLocation, "rb");

-	if (in == NULL)

+	FILE *f = UNICHAR_FOPEN(editor.configFileLocation, "rb");

+	if (f == NULL)

 		setDefaultConfigSettings();

 		return;

-	fseek(in, 0, SEEK_END);

-	size_t fileSize = ftell(in);

-	rewind(in);

+	fseek(f, 0, SEEK_END);

+	const size_t fileSize = ftell(f);

+	rewind(f);

 	// not a valid FT2 config file (FT2.CFG filesize varies depending on version)

 	if (fileSize < 1732 || fileSize > CONFIG_FILE_SIZE)

-		fclose(in);

+		fclose(f);

 		setDefaultConfigSettings();

 		showErrorMsgBox("The configuration file (FT2.CFG) was corrupt, default settings were loaded.");

 		return;

@@ -699,15 +679,15 @@

 	if (fileSize < CONFIG_FILE_SIZE)

 		memset(configBuffer, 0, CONFIG_FILE_SIZE);

-	if (fread(configBuffer, fileSize, 1, in) != 1)

+	if (fread(configBuffer, fileSize, 1, f) != 1)

-		fclose(in);

+		fclose(f);

 		setDefaultConfigSettings();

 		showErrorMsgBox("I/O error while reading FT2.CFG, default settings were loaded.");

 		return;

-	fclose(in);

+	fclose(f);

 	// decrypt config buffer

 	xorConfigBuffer(configBuffer);

@@ -721,6 +701,8 @@

 	loadConfigFromBuffer();

+// GUI-related code

 static void drawQuantValue(void)

--- a/src/ft2_config.h

+++ b/src/ft2_config.h

@@ -282,4 +282,3 @@

 void sbMIDISens(uint32_t pos);

 extern config_t config;

-extern config_t *defConfig;