Make sure Marinetti is available before using NetDisk.

Also, add NetDiskError values used by the disk browser.

cdev.c

@@ -46,6 +46,7 @@
 #define netDiskMissingError 3000
 #define mountURLError       3001
 #define unsupportedProtocolAlert 3002
+#define marinettiMissingError 3003
 #define yesBtn 1        /* number of "Yes" button in alert */
 
 extern void FreeAllCDevMem(void);
@@ -169,6 +170,10 @@ long DoMachine(void)
         InitCursor();
         AlertWindow(awResource+awButtonLayout, NULL, netDiskMissingError);
         return 0;
+    } else if (mountURLRec.result == MARINETTI_NOT_PRESENT) {
+        InitCursor();
+        AlertWindow(awResource+awButtonLayout, NULL, marinettiMissingError);
+        return 0;
     }
 
     return 1;

cdev.rez

@@ -287,6 +287,7 @@ resource rTextForLETextBox2 (helpWindow+helpTxt) {
 #define netDiskMissingError 3000
 #define mountURLError       3001
 #define unsupportedProtocolAlert 3002
+#define marinettiMissingError 3003
 
 resource rAlertString (netDiskMissingError) {
     "62/"
@@ -295,6 +296,12 @@ resource rAlertString (netDiskMissingError) {
     "/^#0\$00"
 };
 
+resource rAlertString (marinettiMissingError) {
+    "62/"
+    "Marinetti is not available. You must install Marinetti to use NetDisk."
+    "/^#0\$00"
+};
+
 resource rAlertString (mountURLError) {
     "32:"
     "MountURL error *0."

netdiskerror.c

@@ -13,6 +13,9 @@ char *ErrorString(enum NetDiskError err) {
         return "No more disks can be mounted via NetDisk.";
     case OUT_OF_MEMORY:
         return "Out of memory.";
+    case MARINETTI_NOT_PRESENT:
+        return "Marinetti is not available. You must install Marinetti to use "
+               "NetDisk.";
 
     /* SetURL errors */
     case URL_TOO_LONG:

netdiskerror.h

@@ -8,6 +8,7 @@ enum NetDiskError {
     DISK_ALREADY_MOUNTED,
     NO_DIBS_AVAILABLE,
     OUT_OF_MEMORY,
+    MARINETTI_NOT_PRESENT,
 
     /* SetURL errors */
     URL_TOO_LONG = 200,
@@ -39,8 +40,12 @@ enum NetDiskError {
     /* File format errors */
     UNSUPPORTED_2IMG_FILE = 600,
     NOT_MULTIPLE_OF_BLOCK_SIZE,
-    NOT_SPECIFIED_IMAGE_TYPE
+    NOT_SPECIFIED_IMAGE_TYPE,
+    UNSUPPORTED_IMAGE_TYPE,
     
+    /* Errors related to processing JSON result in the disk browser */
+    JSON_PARSING_ERROR = 900,
+    NOT_EXPECTED_CONTENTS,
 };
 
 

netdiskinit.c

@@ -182,6 +182,11 @@ static void notificationProc(void) {
 #pragma databank 0
 
 static void doMountURL(struct MountURLRec *mountURLRec) {
+    if (!TCPIPStatus() || toolerror()) {
+        mountURLRec->result = MARINETTI_NOT_PRESENT;
+        return;
+    }
+
     DAccessRecGS controlRec = {5};
     controlRec.code = MountURL;
     controlRec.list = (pointer)mountURLRec;