From fa52d17a04294c245d6b00180bbe03560390c967 Mon Sep 17 00:00:00 2001
From: Kristian Monsen <kristianm@google.com>
Date: Thu, 25 Mar 2010 18:29:21 +0000
Subject: [PATCH] Fix for bug 2538060. Decoding and encoding an URL.

Just encoding [ and ] instead of decoding and encoding again. This is because decoding is not a reversible function so we might not always get back to
the same URL.

Tested against bug 1634719, which this was a fix for.

Change-Id: I041820c15e0a0cf2e6a20bea3801e8b5039d39d5
---
 src/com/android/browser/BrowserActivity.java | 69 ++++++++++++++++------------
 1 file changed, 40 insertions(+), 29 deletions(-)

diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 17c66c5..8a61c3e 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -2797,6 +2797,36 @@ public class BrowserActivity extends Activity
         onDownloadStartNoStream(url, userAgent, contentDisposition, mimetype, contentLength);
     }
 
+    // This is to work around the fact that java.net.URI throws Exceptions
+    // instead of just encoding URL's properly
+    // Helper method for onDownloadStartNoStream
+    private static String encodePath(String path) {
+        char[] chars = path.toCharArray();
+
+        boolean needed = false;
+        for (char c : chars) {
+            if (c == '[' || c == ']') {
+                needed = true;
+                break;
+            }
+        }
+        if (needed == false) {
+            return path;
+        }
+
+        StringBuilder sb = new StringBuilder("");
+        for (char c : chars) {
+            if (c == '[' || c == ']') {
+                sb.append('%');
+                sb.append(Integer.toHexString(c));
+            } else {
+                sb.append(c);
+            }
+        }
+
+        return sb.toString();
+    }
+
     /**
      * Notify the host application a download should be done, even if there
      * is a streaming viewer available for thise type.
@@ -2836,35 +2866,16 @@ public class BrowserActivity extends Activity
             return;
         }
 
-        // java.net.URI is a lot stricter than KURL so we have to undo
-        // KURL's percent-encoding and redo the encoding using java.net.URI.
-        URI uri = null;
+        // java.net.URI is a lot stricter than KURL so we have to encode some
+        // extra characters. Fix for b 2538060 and b 1634719
+        WebAddress webAddress;
         try {
-            // Undo the percent-encoding that KURL may have done.
-            String newUrl = new String(URLUtil.decode(url.getBytes()));
-            // Parse the url into pieces
-            WebAddress w = new WebAddress(newUrl);
-            String frag = null;
-            String query = null;
-            String path = w.mPath;
-            // Break the path into path, query, and fragment
-            if (path.length() > 0) {
-                // Strip the fragment
-                int idx = path.lastIndexOf('#');
-                if (idx != -1) {
-                    frag = path.substring(idx + 1);
-                    path = path.substring(0, idx);
-                }
-                idx = path.lastIndexOf('?');
-                if (idx != -1) {
-                    query = path.substring(idx + 1);
-                    path = path.substring(0, idx);
-                }
-            }
-            uri = new URI(w.mScheme, w.mAuthInfo, w.mHost, w.mPort, path,
-                    query, frag);
+            webAddress = new WebAddress(url);
+            webAddress.mPath = encodePath(webAddress.mPath);
         } catch (Exception e) {
-            Log.e(LOGTAG, "Could not parse url for download: " + url, e);
+            // This only happens for very bad urls, we want to chatch the
+            // exception here
+            Log.e(LOGTAG, "Exception trying to parse url:" + url);
             return;
         }
 
@@ -2873,7 +2884,7 @@ public class BrowserActivity extends Activity
         String cookies = CookieManager.getInstance().getCookie(url);
 
         ContentValues values = new ContentValues();
-        values.put(Downloads.Impl.COLUMN_URI, uri.toString());
+        values.put(Downloads.Impl.COLUMN_URI, webAddress.toString());
         values.put(Downloads.Impl.COLUMN_COOKIE_DATA, cookies);
         values.put(Downloads.Impl.COLUMN_USER_AGENT, userAgent);
         values.put(Downloads.Impl.COLUMN_NOTIFICATION_PACKAGE,
@@ -2884,7 +2895,7 @@ public class BrowserActivity extends Activity
                 Downloads.Impl.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
         values.put(Downloads.Impl.COLUMN_MIME_TYPE, mimetype);
         values.put(Downloads.Impl.COLUMN_FILE_NAME_HINT, filename);
-        values.put(Downloads.Impl.COLUMN_DESCRIPTION, uri.getHost());
+        values.put(Downloads.Impl.COLUMN_DESCRIPTION, webAddress.mHost);
         if (contentLength > 0) {
             values.put(Downloads.Impl.COLUMN_TOTAL_BYTES, contentLength);
         }
-- 
2.11.0