[webcrypto] Only allow crypto.subtle.* to be used from "secure origins".

Source/platform/weborigin/SecurityOriginTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 42 matching lines @@
 TEST(SecurityOriginTest, ValidPortsCreateNonUniqueOrigins)
 {
     int ports[] = { 0, 80, 443, 5000, MaxAllowedPort };
 
     for (size_t i = 0; i < ARRAYSIZE_UNSAFE(ports); ++i) {
         RefPtr<SecurityOrigin> origin = SecurityOrigin::create("http", "example.com", ports[i]);
         EXPECT_FALSE(origin->isUnique()) << "Port " << ports[i] << " should not have generated a unique origin.";
     }
 }
 
+TEST(SecurityOriginTest, CanAccessFeatureRequringSecureOrigin)
+{
+    struct TestCase {
+        bool accessGranted;
+        const char* url;
+    };
+
+    TestCase inputs[] = {
+        // Access is granted to webservers running on localhost.
+        { true, "http://localhost" },
+        { true, "http://localhost:100" },
+        { true, "http://127.0.0.1" },
+        { true, "http://[::1]" },
+        { true, "http://[::1]:21" },
+        { true, "http://127.0.0.1:8080" },
+        { true, "ftp://127.0.0.1" },
+        { true, "ftp://127.0.0.1:443" },
+        { true, "ws://127.0.0.1" },
+
+        // Access is granted to all secure transports.

[darin (slow to review), 2014/05/29 05:08:14]

What about blob URLs generated from https:// pages? Suppose I coin a Blob from
my https:// page, and then navigate an iframe to the URL of the Blob. Is the
resulting document granted access? I think it should be.

Ditto for filesystem: URLs.

+        { true, "https://foobar.com" },
+        { true, "wss://foobar.com" },
+
+        // Access is denied to insecure transports.
+        { false, "ftp://foobar.com" },
+        { false, "http://foobar.com" },
+        { false, "http://foobar.com:443" },
+        { false, "ws://foobar.com" },
+        { false, "data:text/html;charset=utf-8;base64,PHNjcmlwdD5hbGVydCgnaGkhJyk8L3NjcmlwdD4=" },
+        { false, "javascript:alert('hi')" },
+
+        // Access is granted to local files
+        { true, "file:///home/foobar/index.html" },
+    };
+
+    for (size_t i = 0; i < ARRAYSIZE_UNSAFE(inputs); ++i) {
+        SCOPED_TRACE(i);
+        RefPtr<SecurityOrigin> origin = SecurityOrigin::createFromString(inputs[i].url);
+        EXPECT_EQ(inputs[i].accessGranted, origin->canAccessFeatureRequiringSecureOrigin());
+    }
+
+    // Unique origins are not considered secure.
+    RefPtr<SecurityOrigin> uniqueOrigin = SecurityOrigin::createUnique();
+    EXPECT_FALSE(uniqueOrigin->canAccessFeatureRequiringSecureOrigin());
+}
+
 } // namespace