Utils: Consolidate user-agent detection code in a new utility class

Add some new checks for mobile
2017-11-16 12:58:59 +00:00
parent e9ff0c2882
commit ed39ea408f
5 changed files with 81 additions and 51 deletions
--- a/apps/jetty/java/src/net/i2p/servlet/util/ServletUtil.java
+++ b/apps/jetty/java/src/net/i2p/servlet/util/ServletUtil.java
@@ -0,0 +1,64 @@
+package net.i2p.servlet.util;
+
+/**
+ * Simple utilities for servlets.
+ * Consolidated from i2psnark, susimail, and routerconsole
+ * @since 0.9.33
+ */
+public class ServletUtil {
+
+    private ServletUtil() {};
+
+    /**
+     *  @param ua User-Agent string, non-null
+     *  @return true if a text-mode or mobile browser
+     */
+    public static boolean isSmallBrowser(String ua) {
+        return isTextBrowser(ua) || isMobileBrowser(ua);
+    }
+
+    /**
+     *  @param ua User-Agent string, non-null
+     *  @return true if a text-mode browser
+     */
+    public static boolean isTextBrowser(String ua) {
+        return
+            ua.startsWith("Lynx") || ua.startsWith("w3m") ||
+            ua.startsWith("ELinks") || ua.startsWith("Links") ||
+            ua.startsWith("Dillo") || ua.startsWith("Emacs-w3m");
+    }
+
+
+    /**
+     *  The intent here is to return true for phones but
+     *  false for big tablets? But not consistent.
+     *
+     *  @param ua User-Agent string, non-null
+     *  @return true if a mobile browser
+     */
+    public static boolean isMobileBrowser(String ua) {
+        return
+            // http://www.zytrax.com/tech/web/mobile_ids.html
+            // Android tablet UAs don't have "Mobile" in them
+            (ua.contains("Android") && ua.contains("Mobile")) ||
+            ua.contains("BlackBerry") ||
+            ua.contains("iPhone") ||
+            ua.contains("iPod") || ua.contains("iPad") ||
+            ua.contains("Kindle") || ua.contains("Mobile") ||
+            ua.contains("Nintendo") ||
+            ua.contains("Opera Mini") || ua.contains("Opera Mobi") ||
+            ua.contains("Palm") ||
+            ua.contains("PLAYSTATION") || ua.contains("Playstation") ||
+            ua.contains("Profile/MIDP-") || ua.contains("SymbianOS") ||
+            ua.contains("Windows CE") || ua.contains("Windows Phone") ||
+            ua.startsWith("DoCoMo") ||
+            ua.startsWith("Cricket") || ua.startsWith("HTC") ||
+            ua.startsWith("J-PHONE") || ua.startsWith("KDDI-") ||
+            ua.startsWith("LG-") || ua.startsWith("LGE-") ||
+            ua.startsWith("Nokia") || ua.startsWith("OPWV-SDK") ||
+            ua.startsWith("MOT-") || ua.startsWith("SAMSUNG-") ||
+            ua.startsWith("nook") || ua.startsWith("SCH-") ||
+            ua.startsWith("SEC-") || ua.startsWith("SonyEricsson") ||
+            ua.startsWith("Vodafone");
+    }
+}
--- a/apps/jetty/java/src/net/i2p/servlet/util/package.html
+++ b/apps/jetty/java/src/net/i2p/servlet/util/package.html
@@ -0,0 +1,9 @@
+<html>
+<body>
+<p>
+Small utilities for servlets.
+Consolidated from i2psnark, susimail, and router console.
+As of 0.9.33.
+</p>
+</body>
+</html>