1 files changed, 22 insertions, 0 deletions
diff --git a/static/js/pichat.js b/static/js/pichat.js
index d8f71c6..658578a 100644
--- a/static/js/pichat.js
+++ b/static/js/pichat.js
@@ -229,8 +229,30 @@ function handleMsgError(resp) {
 
 // Messages
 
+function invalidImageDomain(content) {
+    var words = content.toLowerCase().split(' ');
+    for (var i = 0; i < words.length; i++) {
+        var w = words[i];
+        if (PicRegex.test(w)) {
+            for (var j = 0; j < InvalidDomains.length; j++) {
+                var d = InvalidDomains[j];
+                if (w.indexOf(d) != -1) {
+                    return d;
+                }
+            }
+        }
+    }
+}
+
 function submitMessage() {
     var content = $.trim($('#msgInput').val());
+
+    var invalidDomain = invalidImageDomain(content);
+    if (invalidDomain) {
+        alert("Sorry, cannot accept images from " + invalidDomain + ". Maybe host the image elsewhere?")
+        return;
+    }
+
     $('#msgInput').val('');
     if (content ==  '') { return; }
     if (content.length > 1337) {