SL-15243 Unicode URL validation

indra/llui/llurlentry.cpp

@@ -181,11 +181,51 @@ bool LLUrlEntryBase::isLinkDisabled() const
 	return globally_disabled;
 }
 
-bool LLUrlEntryBase::isWikiLinkCorrect(std::string url)
+bool LLUrlEntryBase::isWikiLinkCorrect(const std::string &labeled_url) const
 {
-	LLWString label = utf8str_to_wstring(getLabelFromWikiLink(url));
-	label.erase(std::remove(label.begin(), label.end(), L'\u200B'), label.end());
-	return (LLUrlRegistry::instance().hasUrl(wstring_to_utf8str(label))) ? false : true;
+	LLWString wlabel = utf8str_to_wstring(getLabelFromWikiLink(labeled_url));
+	wlabel.erase(std::remove(wlabel.begin(), wlabel.end(), L'\u200B'), wlabel.end());
+
+    // Unicode URL validation, see SL-15243
+    std::replace_if(wlabel.begin(),
+                    wlabel.end(),
+                    [](const llwchar &chr)
+                    {
+                        return (chr == L'\u2024') // "One Dot Leader"
+                               || (chr == L'\uFE52') // "Small Full Stop"
+                               || (chr == L'\uFF0E') // "Fullwidth Full Stop"
+                               // Not a decomposition, but suficiently similar
+                               || (chr == L'\u05C5'); // "Hebrew Mark Lower Dot"
+                    },
+                    L'\u002E'); // Dot "Full Stop"
+
+    std::replace_if(wlabel.begin(),
+        wlabel.end(),
+        [](const llwchar &chr)
+    {
+        return (chr == L'\u02D0') // "Modifier Letter Colon"
+            || (chr == L'\uFF1A') // "Fullwidth Colon"
+            || (chr == L'\uFE55'); // "Small Colon"
+    },
+        L'\u003A'); // Colon
+
+    std::replace_if(wlabel.begin(),
+        wlabel.end(),
+        [](const llwchar &chr)
+    {
+        return (chr == L'\uFF0F'); // "Fullwidth Solidus"
+    },
+        L'\u002F'); // Solidus
+
+    std::string label = wstring_to_utf8str(wlabel);
+    if ((label.find(".com") != std::string::npos
+         || label.find("www.") != std::string::npos)
+        && label.find("://") == std::string::npos)
+    {
+        label = "http://" + label;
+    }
+
+	return (LLUrlRegistry::instance().hasUrl(label)) ? false : true;
 }
 
 std::string LLUrlEntryBase::urlToLabelWithGreyQuery(const std::string &url) const

indra/llui/llurlentry.h

@@ -105,7 +105,7 @@ public:
 
 	bool isLinkDisabled() const;
 
-	bool isWikiLinkCorrect(std::string url);
+	bool isWikiLinkCorrect(const std::string &url) const;
 
 	virtual bool isSLURLvalid(const std::string &url) const { return TRUE; };