implement `config.cc`

1 files changed, 278 insertions, 3 deletions

diff --git a/src/config.cc b/src/config.cc
index 36917cb..f30b2b6 100644
--- a/src/config.cc
+++ b/src/config.cc
@@ -1,6 +1,281 @@
 #include "main.hh"
 
-int Beat = 0;
-int DebugLevel = 0;
+char BINPATH[4096];
+char DATAPATH[4096];
+char LOGPATH[4096];
+char MAPPATH[4096];
+char MONSTERPATH[4096];
+char NPCPATH[4096];
+char ORIGMAPPATH[4096];
+char SAVEPATH[4096];
+char USERPATH[4096];
 
-//
+int SHMKey;
+int AdminPort;
+int GamePort;
+int QueryManagerPort;
+
+char AdminAddress[16];
+char GameAddress[16];
+char QueryManagerAddress[16];
+char QueryManagerAdminPW[9];
+char QueryManagerGamePW[9];
+char QueryManagerWebPW[9];
+
+int DebugLevel;
+bool PrivateWorld;
+TWorldType WorldType;
+char WorldName[30];
+int MaxPlayers;
+int MaxNewbies;
+int PremiumPlayerBuffer;
+int PremiumNewbieBuffer;
+int Beat;
+int RebootTime;
+
+TDatabaseSettings ADMIN_DATABASE;
+TDatabaseSettings VOLATILE_DATABASE;
+TDatabaseSettings WEB_DATABASE;
+TDatabaseSettings FORUM_DATABASE;
+TDatabaseSettings MANAGER_DATABASE;
+
+int NumberOfQueryManagers;
+TQueryManagerSettings QUERY_MANAGER[10];
+
+static char PasswordKey[9] = "Pm-,o%yD";
+
+static void DisguisePassword(char *Password, char *Key){
+	if(Password == NULL){
+		throw "password is null";
+	}
+
+	if(Key == NULL){
+		throw "key for disguising password is null";
+	}
+
+	usize KeyLen = strlen(Key);
+	usize PasswordLen = strlen(Password);
+	if(KeyLen < PasswordLen){
+		throw "key for disguising password is too short";
+	}
+
+	for(usize Index = 0; Index < PasswordLen; Index += 1){
+		Password[Index] = (Key[Index] - Password[Index] + 0x5E) % 0x5E + 0x21;
+	}
+}
+
+void ReadConfig(void){
+	// TODO(fusion): We're not properly initializing these values, specially the
+	// `TDatabaseSettings` ones. It is probably not that big of a deal anyway since
+	// we only call this function once at startup and all this memory should be zero
+	// initialized.
+	PrivateWorld = false;
+	strncpy(GameAddress, "0.0.0.0", 8);
+	SHMKey = 0;
+	QueryManagerPort = 0;
+	strncpy(QueryManagerAddress, "0.0.0.0", 8);
+	AdminPort = 0;
+	GamePort = 0;
+	strncpy(AdminAddress, "0.0.0.0", 8);
+	MaxPlayers = 0;
+	DebugLevel = 1;
+	WorldType = NORMAL;
+	BINPATH[0] = 0;
+	DATAPATH[0] = 0;
+	LOGPATH[0] = 0;
+	MAPPATH[0] = 0;
+	MONSTERPATH[0] = 0;
+	NPCPATH[0] = 0;
+	ORIGMAPPATH[0] = 0;
+	SAVEPATH[0] = 0;
+	USERPATH[0] = 0;
+	QueryManagerAdminPW[0] = 0;
+	QueryManagerGamePW[0] = 0;
+	QueryManagerWebPW[0] = 0;
+	MaxNewbies = 0;
+	PremiumPlayerBuffer = 0;
+	PremiumNewbieBuffer = 0;
+	NumberOfQueryManagers = 0;
+	Beat = 200;
+	RebootTime = 540;
+	ADMIN_DATABASE.Database[0] = 0;
+	VOLATILE_DATABASE.Database[0] = 0;
+	WEB_DATABASE.Database[0] = 0;
+	FORUM_DATABASE.Database[0] = 0;
+	MANAGER_DATABASE.Database[0] = 0;
+
+	char FileName[4096];
+	if(const char *Home = getenv("home")){
+		snprintf(FileName, sizeof(FileName), "%s/.tibia", Home);
+	}else if(const char *Home = getenv("HOME")){
+		snprintf(FileName, sizeof(FileName), "%s/.tibia", Home);
+	}else{
+		snprintf(FileName, sizeof(FileName), ".tibia");
+	}
+
+	if(!FileExists(FileName)){
+		throw "cannot find config-file";
+	}
+
+	TReadScriptFile Script;
+	Script.open(FileName);
+	while(true){
+		Script.nextToken();
+		if(Script.Token == ENDOFFILE){
+			// NOTE(fusion): This is the only graceful exit point of the function.
+			// Errors are transmitted back through exceptions.
+			Script.close();
+			return;
+		}
+
+		// TODO(fusion): Probably some `expectIdentifier` function inlined?
+		// It seems `getIdentifier` also does the same check so this one is
+		// redundant?
+		if(Script.Token != IDENTIFIER){
+			Script.error("Identifier expected");
+		}
+
+		char *Identifier = Script.getIdentifier();
+		Script.readSymbol('=');
+
+		// TODO(fusion): Ughh... Get rid of all `strcpy`s. A malicious configuration
+		// file could do a lot of damage.
+		if(strcmp(Identifier, "binpath") == 0){
+			strcpy(BINPATH, Script.readString());
+		}else if(strcmp(Identifier, "mappath") == 0){
+			strcpy(MAPPATH, Script.readString());
+		}else if(strcmp(Identifier, "origmappath") == 0){
+			strcpy(ORIGMAPPATH, Script.readString());
+		}else if(strcmp(Identifier, "datapath") == 0){
+			strcpy(DATAPATH, Script.readString());
+		}else if(strcmp(Identifier, "monsterpath") == 0){
+			strcpy(MONSTERPATH, Script.readString());
+		}else if(strcmp(Identifier, "npcpath") == 0){
+			strcpy(NPCPATH, Script.readString());
+		}else if(strcmp(Identifier, "userpath") == 0){
+			strcpy(USERPATH, Script.readString());
+		}else if(strcmp(Identifier, "logpath") == 0){
+			strcpy(LOGPATH, Script.readString());
+		}else if(strcmp(Identifier, "savepath") == 0){
+			strcpy(SAVEPATH, Script.readString());
+		}else if(strcmp(Identifier, "shm") == 0){
+			SHMKey = Script.readNumber();
+		}else if(strcmp(Identifier, "adminport") == 0){
+			AdminPort = Script.readNumber();
+		}else if(strcmp(Identifier, "adminaddress") == 0){
+			strcpy(AdminAddress, Script.readString());
+		}else if(strcmp(Identifier, "querymanagerport") == 0){
+			QueryManagerPort = Script.readNumber();
+		}else if(strcmp(Identifier, "querymanageraddress") == 0){
+			strcpy(QueryManagerAddress, Script.readString());
+		}else if(strcmp(Identifier, "querymanageradminpw") == 0){
+			strcpy(QueryManagerAdminPW, Script.readString());
+		}else if(strcmp(Identifier, "querymanagergamepw") == 0){
+			strcpy(QueryManagerGamePW, Script.readString());
+		}else if(strcmp(Identifier, "querymanagerwebpw") == 0){
+			strcpy(QueryManagerWebPW, Script.readString());
+		}else if(strcmp(Identifier, "debuglevel") == 0){
+			DebugLevel = Script.readNumber();
+		}else if(strcmp(Identifier, "state") == 0){
+			PrivateWorld = (strcmp(Script.readIdentifier(), "private") == 0);
+		}else if(strcmp(Identifier, "world") == 0){
+			strcpy(WorldName, Script.readString());
+		}else if(strcmp(Identifier, "beat") == 0){
+			Beat = Script.readNumber();
+		}else if(strcmp(Identifier, "admindatabase") == 0){
+			Script.readSymbol('(');
+			strcpy(ADMIN_DATABASE.Product, Script.readIdentifier());
+			Script.readSymbol(',');
+			strcpy(ADMIN_DATABASE.Database, Script.readString());
+			Script.readSymbol(',');
+			strcpy(ADMIN_DATABASE.Login, Script.readString());
+			Script.readSymbol(',');
+			strcpy(ADMIN_DATABASE.Password, Script.readString());
+			DisguisePassword(ADMIN_DATABASE.Password, PasswordKey);
+			Script.readSymbol(',');
+			strcpy(ADMIN_DATABASE.Host, Script.readString());
+			Script.readSymbol(',');
+			strcpy(ADMIN_DATABASE.Port, Script.readString());
+			Script.readSymbol(')');
+		}else if(strcmp(Identifier, "volatiledatabase") == 0){
+			Script.readSymbol('(');
+			strcpy(VOLATILE_DATABASE.Product, Script.readIdentifier());
+			Script.readSymbol(',');
+			strcpy(VOLATILE_DATABASE.Database, Script.readString());
+			Script.readSymbol(',');
+			strcpy(VOLATILE_DATABASE.Login, Script.readString());
+			Script.readSymbol(',');
+			strcpy(VOLATILE_DATABASE.Password, Script.readString());
+			DisguisePassword(VOLATILE_DATABASE.Password, PasswordKey);
+			Script.readSymbol(',');
+			strcpy(VOLATILE_DATABASE.Host, Script.readString());
+			Script.readSymbol(',');
+			strcpy(VOLATILE_DATABASE.Port, Script.readString());
+			Script.readSymbol(')');
+		}else if(strcmp(Identifier, "webdatabase") == 0){
+			Script.readSymbol('(');
+			strcpy(WEB_DATABASE.Product, Script.readIdentifier());
+			Script.readSymbol(',');
+			strcpy(WEB_DATABASE.Database, Script.readString());
+			Script.readSymbol(',');
+			strcpy(WEB_DATABASE.Login, Script.readString());
+			Script.readSymbol(',');
+			strcpy(WEB_DATABASE.Password, Script.readString());
+			DisguisePassword(WEB_DATABASE.Password, PasswordKey);
+			Script.readSymbol(',');
+			strcpy(WEB_DATABASE.Host, Script.readString());
+			Script.readSymbol(',');
+			strcpy(WEB_DATABASE.Port, Script.readString());
+			Script.readSymbol(')');
+		}else if(strcmp(Identifier, "forumdatabase") == 0){
+			Script.readSymbol('(');
+			strcpy(FORUM_DATABASE.Product, Script.readIdentifier());
+			Script.readSymbol(',');
+			strcpy(FORUM_DATABASE.Database, Script.readString());
+			Script.readSymbol(',');
+			strcpy(FORUM_DATABASE.Login, Script.readString());
+			Script.readSymbol(',');
+			strcpy(FORUM_DATABASE.Password, Script.readString());
+			DisguisePassword(FORUM_DATABASE.Password, PasswordKey);
+			Script.readSymbol(',');
+			strcpy(FORUM_DATABASE.Host, Script.readString());
+			Script.readSymbol(',');
+			strcpy(FORUM_DATABASE.Port, Script.readString());
+			Script.readSymbol(')');
+		}else if(strcmp(Identifier, "managerdatabase") == 0){
+			Script.readSymbol('(');
+			strcpy(MANAGER_DATABASE.Product, Script.readIdentifier());
+			Script.readSymbol(',');
+			strcpy(MANAGER_DATABASE.Database, Script.readString());
+			Script.readSymbol(',');
+			strcpy(MANAGER_DATABASE.Login, Script.readString());
+			Script.readSymbol(',');
+			strcpy(MANAGER_DATABASE.Password, Script.readString());
+			DisguisePassword(MANAGER_DATABASE.Password, PasswordKey);
+			Script.readSymbol(',');
+			strcpy(MANAGER_DATABASE.Host, Script.readString());
+			Script.readSymbol(',');
+			strcpy(MANAGER_DATABASE.Port, Script.readString());
+			Script.readSymbol(')');
+		}else if(strcmp(Identifier, "querymanager") == 0){
+			Script.readSymbol('{');
+			do{
+				if(NumberOfQueryManager >= NARRAY(QUERY_MANAGER)){
+					Script.error("Cannot handle more query managers");
+				}
+				Script.readSymbol('(');
+				strcpy(QUERY_MANAGER[NumberOfQueryManager].Host, Script.readString());
+				Script.readSymbol(',');
+				QUERY_MANAGER[NumberOfQueryManager].Port = Script.readNumber();
+				Script.readSymbol(',');
+				strcpy(QUERY_MANAGER[NumberOfQueryManager].Password, Script.readString());
+				DisguisePassword(QUERY_MANAGER[NumberOfQueryManager].Password, PasswordKey);
+				Script.readSymbol(')');
+				NumberOfQueryManagers += 1;
+			}while(Script.readSpecial() != '}');
+		}else{
+			// TODO(fusion):
+			//error("Unknown configuration key \"%s\"", Identifier);
+		}
+	}
+}