control logs destination through -log parameter

Daemon.cpp

@@ -68,7 +68,7 @@ namespace i2p
 			i2p::util::config::ReadConfigFile(i2p::util::filesystem::GetConfigFile());
 
 			isDaemon = i2p::util::config::GetArg("-daemon", 0);
-			isLogging = i2p::util::config::GetArg("-log", 1);
+			isLogging = i2p::util::config::GetArg("-log", (int)isDaemon);
 
 			int port = i2p::util::config::GetArg("-port", 0);
 			if (port)
@@ -105,20 +105,17 @@ namespace i2p
 			// initialize log			
 			if (isLogging)
 			{				
-				if (isDaemon)
+				std::string logfile_path = IsService () ? "/var/log/i2pd" : i2p::util::filesystem::GetDataDir().string();
-				{
-					std::string logfile_path = IsService () ? "/var/log/i2pd" : i2p::util::filesystem::GetDataDir().string();
 #ifndef _WIN32
-					logfile_path.append("/i2pd.log");
+				logfile_path.append("/i2pd.log");
 #else
-					logfile_path.append("\\i2pd.log");
+				logfile_path.append("\\i2pd.log");
 #endif
-					StartLog (logfile_path);
+				StartLog (logfile_path);
-				} else {
-					StartLog (""); // write to stdout
-				}
-				g_Log->SetLogLevel(i2p::util::config::GetArg("-loglevel", "info"));
 			}
+			else
+				StartLog (""); // write to stdout
+			g_Log->SetLogLevel(i2p::util::config::GetArg("-loglevel", "info"));
 			
 			std::string httpAddr = i2p::util::config::GetArg("-httpaddress", "127.0.0.1");
 			uint16_t    httpPort = i2p::util::config::GetArg("-httpport", 7070);

docs/configuration.md

@@ -4,14 +4,13 @@ i2pd configuration
 Command line options
 --------------------
 
-* --host=               - The external IP (deprecated). 
 * --port=               - The port to listen on
 * --httpaddress=        - The address to listen on (HTTP server)
 * --httpport=           - The port to listen on (HTTP server)
-* --log=                - Enable or disable logging to file. 1 for yes, 0 for no.
 * --loglevel=           - Log messages above this level (debug, *info, warn, error)
 * --pidfile=            - Where to write pidfile (dont write by default)
-* --daemon=             - Enable or disable daemon mode. 1 for yes, 0 for no.
+* --daemon=             - Enable or disable daemon mode. 1 for yes, 0 for no. 0 by default
+* --log=                - Enable or disable logging to the file. 1 for daemon, 0 for non-daemon by default
 * --svcctl=             - Windows service management (--svcctl="install" or --svcctl="remove")
 * --service=            - 1 if uses system folders (/var/run/i2pd.pid, /var/log/i2pd/i2pd.log, /var/lib/i2pd).
 * --v6=                 - 1 if supports communication through ipv6, off by default