Lift limitation of text length in generic dialog XB

All string options should now point to allocated memory, as strdup /
free is consistently used on them. This is OK for values received from
ParseArgs, but for non-arg intermediate variables that must receive strg
values, such as in the comment and tags popups, strdup has to be used to
initialize those.

diff --git a/xoptions.c b/xoptions.c
index 598019e..0c1e4c9 100644 (file)
--- a/xoptions.c
+++ b/xoptions.c
@@ -1243,7 +1243,10 @@ void GenericReadout(int selected)
                        if(currentCps) {
                            snprintf(buf, MSG_SIZ,  "option %s=%s\n", currentOption[i].name, val);
                            SendToProgram(buf, currentCps);
-                       } else *dest = currentOption[i].name + 100; // option gets to point to private storage;
+                       } else {
+                           if(*dest) free(*dest);
+                           *dest = malloc(strlen(val)+1);
+                       }
                        safeStrCpy(*dest, val, MSG_SIZ - (*dest - currentOption[i].name)); // copy text there
                    }
                    break;
@@ -1880,7 +1883,7 @@ void NewCommentPopup(char *title, char *text, int index)
        XtSetArg(args[0], XtNstring, text);
        XtSetValues(commentOptions[0].handle, args, 1);
     }
-    commentText = text;
+    if(commentText) free(commentText); commentText = strdup(text);
     commentIndex = index;
     MarkMenu("menuView.Show Comments", 1);
     if(GenericPopUp(commentOptions, title, 1))
@@ -1918,7 +1921,7 @@ void NewTagsPopup(char *text, char *msg)
        XtSetArg(args[0], XtNstring, text);
        XtSetValues(tagsOptions[1].handle, args, 1);
     }
-    tagsText = text;
+    if(tagsText) free(tagsText); tagsText = strdup(text);
     tagsOptions[0].textValue = msg;
     MarkMenu("menuView.Show Tags", 2);
     GenericPopUp(tagsOptions, _("Tags"), 2);
@@ -2055,9 +2058,11 @@ void LoadEngineProc(w, event, prms, nprms)
      Cardinal *nprms;
 {
    isUCI = addToList = storeVariant = v1 = False; hasBook = True; // defaults
-   engineDir = nickName = params = ""; 
    if(engineChoice) free(engineChoice); engineChoice = strdup(engineNr[0]);
    if(engineLine)   free(engineLine);   engineLine = strdup("");
+   if(engineDir)    free(engineDir);    engineDir = strdup("");
+   if(nickName)     free(nickName);     nickName = strdup("");
+   if(params)       free(params);       params = strdup("");
    NamesToList(firstChessProgramNames, engineList, engineMnemonic);
    GenericPopUp(installOptions, _("Load engine"), 0);
 }