Added environment variable handling.

* source/server/main.c (main):
- Added environment variable handling.
- Moved "Using" messages to after both command line arguments and enviroment variables are checked and applied.
- Command-line arguments override enviroment variables.

source/client/client-drawing.c

@@ -3,7 +3,7 @@
 // | Copyright (C) 2023, Barra Ó Catháin    |
 // | See end of file for copyright notice.  |
 // ==========================================
-#include "../config.h"
+#include <config.h>
 #include "client-drawing.h"
 
 void redrawClientLayout(WINDOW * gameWindow, WINDOW * chatWindow, WINDOW * inputWindow)

source/client/main.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <netdb.h>
 #include <string.h>
+#include <config.h>
 #include <stdlib.h>
 #include <getopt.h>
 #include <limits.h>
@@ -16,7 +17,6 @@
 #include <sys/socket.h>
 #include <gnutls/gnutls.h>
 
-#include "../config.h"
 #include "../messages.h"
 #include "client-drawing.h"
 #include "receiving-thread.h"

source/server/main.c

@@ -63,9 +63,24 @@ int main (int argc, char ** argv)
 		{"port", required_argument, 0, 'p' },
 		{"host", required_argument, 0, 'h' },
 		{"interface", required_argument, 0, 'i' }
-	};   
-
+	};
 	
+	// Check environment variables:
+	if (getenv("SILVERMUD_SERVER_PORT") != NULL)
+	{
+		portSpecified = true;
+		strncpy(serverPort, getenv("SILVERMUD_SERVER_HOST"), HOST_NAME_MAX);
+	}
+	if (getenv("SILVERMUD_SERVER_HOST") != NULL)
+	{
+		hostSpecified = true;
+		strncpy(serverHostname, getenv("SILVERMUD_SERVER_HOST"), HOST_NAME_MAX);
+	}
+	if (getenv("SILVERMUD_SERVER_INTERFACE") != NULL)
+	{
+		interfaceSpecified = true;
+		strncpy(serverInterface, getenv("SILVERMUD_SERVER_INTERFACE"), HOST_NAME_MAX);
+	}
 	
 	// Parse command-line options:
 	int selectedOption = 0, optionIndex = 0;
@@ -75,14 +90,13 @@ int main (int argc, char ** argv)
 		{
 			case 'p':
 			{
-				printf("Using port: %s\n", optarg);
 				portSpecified = true;
 				strncpy(serverPort, optarg, HOST_NAME_MAX);
 				break;
 			}
 			case 'h':
 			{
-				printf("Using hostname: %s\n", optarg);
+	
 				hostSpecified = true;
 				strncpy(serverHostname, optarg, HOST_NAME_MAX);
 				break;
@@ -96,7 +110,22 @@ int main (int argc, char ** argv)
 			}
 		}
 	}
-		
+
+	if (portSpecified)
+	{
+		printf("Using port: %s\n", serverPort);
+	}
+
+	if (hostSpecified)
+	{
+		printf("Using hostname: %s\n", serverHostname);
+	}
+
+	if (interfaceSpecified)
+	{
+		printf("Using interface: %s\n", serverInterface);
+	}
+	
 	// Initialize Scheme:
 	scm_init_guile();