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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 COMPONENTS_AUTOFILL_BROWSER_PASSWORD_GENERATOR_H_ | |
6 #define COMPONENTS_AUTOFILL_BROWSER_PASSWORD_GENERATOR_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/gtest_prod_util.h" | |
12 | |
13 namespace autofill { | |
14 | |
15 // Class to generate random passwords. Currently we just use a generic algorithm | |
16 // for all sites, but eventually we can incorporate additional information to | |
17 // determine passwords that are likely to be accepted (i.e. use pattern field, | |
18 // previous generated passwords, crowdsourcing, etc.) | |
19 class PasswordGenerator { | |
20 public: | |
21 // |max_length| is used as a hint for the generated password's length. | |
22 explicit PasswordGenerator(size_t max_length); | |
23 ~PasswordGenerator(); | |
24 | |
25 // Returns a random password such that: | |
26 // (1) Each character is guaranteed to be a non-whitespace printable ASCII | |
27 // character. | |
28 // (2) The generated password will contain AT LEAST one upper case letter, one | |
29 // lower case letter, one digit, and EXACTLY one other symbol. | |
30 // (3) The password length will be equal to |password_length_| (see comment | |
31 // for the constructor). | |
32 // Not thread safe. | |
33 std::string Generate() const; | |
34 | |
35 private: | |
36 // Unit test also need to access |kDefaultPasswordLength|. | |
37 static const size_t kDefaultPasswordLength; | |
38 FRIEND_TEST_ALL_PREFIXES(PasswordGeneratorTest, PasswordLength); | |
39 | |
40 // The length of the generated password. | |
41 const size_t password_length_; | |
42 | |
43 DISALLOW_COPY_AND_ASSIGN(PasswordGenerator); | |
44 }; | |
45 | |
46 } // namespace autofill | |
47 | |
48 #endif // COMPONENTS_AUTOFILL_BROWSER_PASSWORD_GENERATOR_H_ | |
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