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screenshot: Also validate parameters to FlashArea()

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Apply the same parameter validation to FlashArea() we already use
for ScreenshotArea().

https://bugzilla.gnome.org/show_bug.cgi?id=731220
This commit is contained in:
Florian Müllner 2014-06-04 16:26:06 +02:00
parent 1b97778925
commit d98e7dbd4a
1 changed files with 20 additions and 6 deletions
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26
js/ui/screenshot.js
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@ -68,6 +68,13 @@ const ScreenshotService = new Lang.Class({
Gio.DBus.session.own_name('org.gnome.Shell.Screenshot', Gio.BusNameOwnerFlags.REPLACE, null, null);
},
_checkArea: function(x, y, width, height) {
return x >= 0 && y >= 0 &&
width > 0 && height > 0 &&
x + width <= global.screen_width &&
y + height <= global.screen_height;
},
_onScreenshotComplete: function(obj, result, area, filenameUsed, flash, invocation) {
if (flash && result) {
let flashspot = new Flashspot(area);
@ -80,11 +87,10 @@ const ScreenshotService = new Lang.Class({
ScreenshotAreaAsync : function (params, invocation) {
let [x, y, width, height, flash, filename, callback] = params;
if (x < 0 || y < 0 ||
width <= 0 || height <= 0 ||
x + width > global.screen_width || y + height > global.screen_height) {
invocation.return_error_literal(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED,
"Invalid params");
if (!this._checkArea(x, y, width, height)) {
invocation.return_error_literal(Gio.IOErrorEnum,
Gio.IOErrorEnum.CANCELLED,
"Invalid params");
return;
}
let screenshot = new Shell.Screenshot();
@ -126,9 +132,17 @@ const ScreenshotService = new Lang.Class({
}));
},
FlashArea: function(x, y, width, height) {
FlashAreaAsync: function(params, invocation) {
let [x, y, width, height] = params;
if (!this._checkArea(x, y, width, height)) {
invocation.return_error_literal(Gio.IOErrorEnum,
Gio.IOErrorEnum.CANCELLED,
"Invalid params");
return;
}
let flashspot = new Flashspot({ x : x, y : y, width: width, height: height});
flashspot.fire();
invocation.return_value(null);
}
});