Check for Marinetti 3.0b11 or later.

If an older version is used, the user is warned about it but can still continue.

browserwindow.c

@@ -13,6 +13,7 @@
 #include <quickdraw.h>
 #include <resources.h>
 #include <window.h>
+#include <tcpip.h>
 #include <gsos.h>
 
 #include <orca.h>
@@ -24,6 +25,7 @@
 #include "diskbrowser.h"
 #include "browserevents.h"
 #include "disksearch.h"
+#include "browserutil.h"
 
 /* Rectangles outlining the buttons in the style of "default" buttons */
 static Rect searchRect = {8, 305, 26, 414};
@@ -60,6 +62,17 @@ static void DrawContents(void);
 static void DrawButtonOutlines(boolean justChanged);
 
 
+static void MarinettiVersionCheck(void) {
+    static boolean alreadyChecked = false;
+
+    if (!alreadyChecked) {
+        if (TCPIPLongVersion() < DESIRED_MARINETTI_VERSION) {
+            ShowErrorAlert(0, marinettiVersionWarning);
+        }
+        alreadyChecked = true;
+    }
+}
+
 void ShowBrowserWindow(void) {
     if (windowOpened) {
         SelectWindow(window);
@@ -78,6 +91,8 @@ void ShowBrowserWindow(void) {
     }
     resourceFileOpened = true;
 
+    MarinettiVersionCheck();
+
     window = NewWindow2(NULL, 0, DrawContents, NULL,
                         refIsResource, winDiskBrowser, rWindParam1);
     if (toolerror()) {

diskbrowser.h

@@ -14,8 +14,11 @@
 
 #define searchErrorAlert        3000
 #define mountErrorAlert         3001
+#define marinettiVersionWarning 3002
 
 
+#define DESIRED_MARINETTI_VERSION 0x03006011 /* 3.0b11 */
+
 /* The browser window */
 extern GrafPortPtr window;
 

diskbrowser.rez

@@ -171,6 +171,7 @@ resource rPString(mountDiskButton) { "Mount Disk" };
 
 #define searchErrorAlert 3000
 #define mountErrorAlert 3001
+#define marinettiVersionWarning 3002
 
 resource rAlertString (searchErrorAlert) {
     "72/"
@@ -188,3 +189,13 @@ resource rAlertString (mountErrorAlert) {
     "/^#0\$00"
 };
 
+resource rAlertString (marinettiVersionWarning) {
+    "84:"
+    "NetDisk and the Archive.org Disk Browser are designed for use with "
+    "Marinetti 3.0b11 or later. You are currently using an older version of "
+    "Marinetti. You can try to use NetDisk with your current Marinetti "
+    "version, but you may experience I/O errors or other problems. "
+    "To ensure proper operation, please upgrade Marinetti."
+    ":^#6\$00"
+};
+