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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_COMMON_EXTENSIONS_CSP_VALIDATOR_H_ | |
6 #define CHROME_COMMON_EXTENSIONS_CSP_VALIDATOR_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "extensions/common/manifest.h" | |
11 | |
12 namespace extensions { | |
13 | |
14 namespace csp_validator { | |
15 | |
16 // Checks whether the given |policy| is legal for use in the extension system. | |
17 // This check just ensures that the policy doesn't contain any characters that | |
18 // will cause problems when we transmit the policy in an HTTP header. | |
19 bool ContentSecurityPolicyIsLegal(const std::string& policy); | |
20 | |
21 // Checks whether the given |policy| meets the minimum security requirements | |
22 // for use in the extension system. | |
23 // | |
24 // Ideally, we would like to say that an XSS vulnerability in the extension | |
25 // should not be able to execute script, even in the precense of an active | |
26 // network attacker. | |
27 // | |
28 // However, we found that it broke too many deployed extensions to limit | |
29 // 'unsafe-eval' in the script-src directive, so that is allowed as a special | |
30 // case for extensions. Platform apps disallow it. | |
31 bool ContentSecurityPolicyIsSecure( | |
32 const std::string& policy, Manifest::Type type); | |
33 | |
34 // Checks whether the given |policy| enforces a unique origin sandbox as | |
35 // defined by http://www.whatwg.org/specs/web-apps/current-work/multipage/ | |
36 // the-iframe-element.html#attr-iframe-sandbox. The policy must have the | |
37 // "sandbox" directive, and the sandbox tokens must not include | |
38 // "allow-same-origin". Additional restrictions may be imposed depending on | |
39 // |type|. | |
40 bool ContentSecurityPolicyIsSandboxed( | |
41 const std::string& policy, Manifest::Type type); | |
42 | |
43 } // namespace csp_validator | |
44 | |
45 } // namespace extensions | |
46 | |
47 #endif // CHROME_COMMON_EXTENSIONS_CSP_VALIDATOR_H_ | |
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