Implement ContentSecurityPolicy on the browser-side.

content/common/content_security_policy/csp_source_unittest.cc

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/content_security_policy/csp_context.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+namespace {
+
+// Allow() is an abbreviation of CSPSource::Allow(). Useful for writting test
+// expectations on one line.
+bool Allow(const CSPSource& source,
+           const GURL& url,
+           CSPContext* context,
+           bool is_redirect = false) {
+  return CSPSource::Allow(source, url, context, is_redirect);
+}
+
+}  // namespace
+
+TEST(CSPSourceTest, BasicMatching) {
+  CSPContext context;
+
+  CSPSource source("http", "example.com", false, 8000, false, "/foo/");
+
+  EXPECT_TRUE(Allow(source, GURL("http://example.com:8000/foo/"), &context));
+  EXPECT_TRUE(Allow(source, GURL("http://example.com:8000/foo/bar"), &context));
+  EXPECT_TRUE(Allow(source, GURL("HTTP://EXAMPLE.com:8000/foo/BAR"), &context));
+
+  EXPECT_FALSE(Allow(source, GURL("http://example.com:8000/bar/"), &context));
+  EXPECT_FALSE(Allow(source, GURL("https://example.com:8000/bar/"), &context));
+  EXPECT_FALSE(Allow(source, GURL("http://example.com:9000/bar/"), &context));
+  EXPECT_FALSE(
+      Allow(source, GURL("HTTP://example.com:8000/FOO/bar"), &context));
+  EXPECT_FALSE(
+      Allow(source, GURL("HTTP://example.com:8000/FOO/BAR"), &context));
+}
+
+TEST(CSPSourceTest, AllowScheme) {
+  CSPContext context;
+
+  // http -> {http, https}.
+  {
+    CSPSource source("http", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ftp://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ws://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("wss://a.com"), &context));
+  }
+
+  // ws -> {ws, wss}.
+  {
+    CSPSource source("ws", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("https://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ftp://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("ws://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("wss://a.com"), &context));
+  }
+
+  // Exact matches required (ftp)
+  {
+    CSPSource source("ftp", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("ftp://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+  }
+
+  // Exact matches required (https)
+  {
+    CSPSource source("https", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+  }
+
+  // Exact matches required (wss)
+  {
+    CSPSource source("wss", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("wss://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ws://a.com"), &context));
+  }
+
+  // Scheme is empty (ProtocolMatchesSelf).
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+
+    // Self's scheme is http.
+    context.SetSelf(url::Origin(GURL("http://a.com")));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http-so://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https-so://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ftp://a.com"), &context));
+
+    // Self's is https.
+    context.SetSelf(url::Origin(GURL("https://a.com")));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http-so://a.com"), &context));
+    // REVIEW(): Is it the correct behavior?
+    EXPECT_FALSE(Allow(source, GURL("https-so://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("ftp://a.com"), &context));
+
+    // Self's scheme is not in the http familly.
+    context.SetSelf(url::Origin(GURL("ftp://a.com/")));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("ftp://a.com"), &context));
+
+    // Self's scheme is unique.
+    context.SetSelf(url::Origin(GURL("non-standard-scheme://a.com")));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("non-standard-scheme://a.com"), &context));
+  }
+}
+
+TEST(CSPSourceTest, AllowHost) {
+  CSPContext context;
+  context.SetSelf(url::Origin(GURL("http://example.com")));
+
+  // Host is * (source-expression = "http://*")
+  {
+    CSPSource source("http", "", true, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://."), &context));
+  }
+
+  // Host is *.foo.bar
+  {
+    CSPSource source("", "foo.bar", true, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://bar"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://foo.bar"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://o.bar"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://*.foo.bar"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://sub.foo.bar"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://sub.sub.foo.bar"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://.foo.bar"), &context));
+  }
+
+  // Host is exact.
+  {
+    CSPSource source("", "foo.bar", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://foo.bar"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://sub.foo.bar"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://bar"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://.foo.bar"), &context));
+  }
+}
+
+TEST(CSPSourceTest, AllowPort) {
+  CSPContext context;
+  context.SetSelf(url::Origin(GURL("http://example.com")));
+
+  // Source's port unspecified.
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:80"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com:8080"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com:443"), &context));
+    EXPECT_FALSE(Allow(source, GURL("https://a.com:80"), &context));
+    EXPECT_FALSE(Allow(source, GURL("https://a.com:8080"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com:443"), &context));
+    EXPECT_FALSE(Allow(source, GURL("unknown://a.com:80"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+  }
+
+  // Source's port is "*".
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, true, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:80"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:8080"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com:8080"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com:0"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+  }
+
+  // Source has a port.
+  {
+    CSPSource source("", "a.com", false, 80, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:80"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com:8080"), &context));
+    EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context));
+  }
+
+  // Allow upgrade from :80 to :443
+  {
+    CSPSource source("", "a.com", false, 80, false, "");
+    EXPECT_TRUE(Allow(source, GURL("https://a.com:443"), &context));
+    // REVIEW(arthursonzogni): Is it expected?
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:443"), &context));
+  }
+
+  // Host is * but port is specified
+  {
+    CSPSource source("http", "", true, 111, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com:111"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com:222"), &context));
+  }
+}
+
+TEST(CSPSourceTest, AllowPath) {
+  CSPContext context;
+  context.SetSelf(url::Origin(GURL("http://example.com")));
+
+  // Path to a file
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false,
+                     "/path/to/file");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/file"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com/path/to/"), &context));
+    EXPECT_FALSE(
+        Allow(source, GURL("http://a.com/path/to/file/subpath"), &context));
+    EXPECT_FALSE(
+        Allow(source, GURL("http://a.com/path/to/something"), &context));
+  }
+
+  // Path to a directory
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false,
+                     "/path/to/");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/file"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com/path/"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com/path/to"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com/path/to"), &context));
+  }
+
+  // Empty path
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/file"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+  }
+
+  // Almost empty path
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "/");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/file"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/path/to/"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com"), &context));
+  }
+
+  // Path encoded.
+  {
+    CSPSource source("http", "a.com", false, url::PORT_UNSPECIFIED, false,
+                     "/Hello Günter");
+    EXPECT_TRUE(
+        Allow(source, GURL("http://a.com/Hello%20G%C3%BCnter"), &context));
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/Hello Günter"), &context));
+  }
+
+  // Host is * but path is specified.
+  {
+    CSPSource source("http", "", true, url::PORT_UNSPECIFIED, false,
+                     "/allowed-path");
+    EXPECT_TRUE(Allow(source, GURL("http://a.com/allowed-path"), &context));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com/disallowed-path"), &context));
+  }
+}
+
+TEST(CSPSourceTest, RedirectMatching) {
+  CSPContext context;
+  CSPSource source("http", "a.com", false, 8000, false, "/bar/");
+  EXPECT_TRUE(Allow(source, GURL("http://a.com:8000/"), &context, true));
+  EXPECT_TRUE(Allow(source, GURL("http://a.com:8000/foo"), &context, true));
+  EXPECT_TRUE(Allow(source, GURL("https://a.com:8000/foo"), &context, true));
+  EXPECT_FALSE(
+      Allow(source, GURL("http://not-a.com:8000/foo"), &context, true));
+  EXPECT_FALSE(Allow(source, GURL("http://a.com:9000/foo/"), &context, false));
+}
+
+TEST(CSPSourceTest, ToString) {
+  {
+    CSPSource source("http", "", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_EQ("http:", source.ToString());
+  }
+  {
+    CSPSource source("http", "a.com", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_EQ("http://a.com", source.ToString());
+  }
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_EQ("a.com", source.ToString());
+  }
+  {
+    CSPSource source("", "a.com", true, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_EQ("*.a.com", source.ToString());
+  }
+  {
+    CSPSource source("", "", true, url::PORT_UNSPECIFIED, false, "");
+    EXPECT_EQ("*", source.ToString());
+  }
+  {
+    CSPSource source("", "a.com", false, 80, false, "");
+    EXPECT_EQ("a.com:80", source.ToString());
+  }
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, true, "");
+    EXPECT_EQ("a.com:*", source.ToString());
+  }
+  {
+    CSPSource source("", "a.com", false, url::PORT_UNSPECIFIED, false, "/path");
+    EXPECT_EQ("a.com/path", source.ToString());
+  }
+}
+
+}  // namespace content