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Issue 1906723003: Unify UUID/GUID generation code across base and blink (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Use uppercase GUID for push messaging for crbug.com/461867 Created 4 years, 8 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_GUID_H_ 5 #ifndef BASE_GUID_H_
6 #define BASE_GUID_H_ 6 #define BASE_GUID_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 9
10 #include <string> 10 #include <string>
11 11
12 #include "base/base_export.h" 12 #include "base/base_export.h"
13 #include "build/build_config.h" 13 #include "build/build_config.h"
14 14
15 namespace base { 15 namespace base {
16 16
17 // Generate a 128-bit random GUID of the form: "%08X-%04X-%04X-%04X-%012llX". 17 // Generate a 128-bit (pseudo) random GUID in the form of version 4 as described
18 // in RFC 4122, section 4.4.
19 // The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
20 // where y is one of [8, 9, A, B].
21 // The hexadecimal values "a" through "f" are output as lower case characters.
18 // If GUID generation fails an empty string is returned. 22 // If GUID generation fails an empty string is returned.
19 // The POSIX implementation uses pseudo random number generation to create
20 // the GUID. The Windows implementation uses system services.
21 BASE_EXPORT std::string GenerateGUID(); 23 BASE_EXPORT std::string GenerateGUID();
22 24
23 // Returns true if the input string conforms to the GUID format. 25 // Returns true if the input string conforms to the GUID format.
26 // (Note that this does not strictly check version 4 format so that it accepts
27 // GUID format that was generated by Windows system services.
28 // IsValidVersion4GUID to perform stricter check.)
24 BASE_EXPORT bool IsValidGUID(const std::string& guid); 29 BASE_EXPORT bool IsValidGUID(const std::string& guid);
25 30
26 #if defined(OS_POSIX) 31 // Returns true if the input string conforms to the version 4 GUID format.
32 BASE_EXPORT bool IsValidVersion4GUID(const std::string& guid);
33
27 // For unit testing purposes only. Do not use outside of tests. 34 // For unit testing purposes only. Do not use outside of tests.
28 BASE_EXPORT std::string RandomDataToGUIDString(const uint64_t bytes[2]); 35 BASE_EXPORT std::string RandomDataToGUIDString(const uint64_t bytes[2]);
29 #endif
30 36
31 } // namespace base 37 } // namespace base
32 38
33 #endif // BASE_GUID_H_ 39 #endif // BASE_GUID_H_
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