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1 // Copyright 2016 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_OS_CRYPT_LIBSECRET_UTIL_POSIX_H_ | |
6 #define COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_POSIX_H_ | |
7 | |
8 #include <libsecret/secret.h> | |
9 | |
10 #include <list> | |
11 #include <string> | |
12 | |
13 #include "base/macros.h" | |
14 | |
15 // Utility for dynamically loading libsecret. | |
16 class LibsecretLoader { | |
17 public: | |
18 static decltype(&::secret_password_store_sync) secret_password_store_sync; | |
19 static decltype(&::secret_service_search_sync) secret_service_search_sync; | |
20 static decltype(&::secret_password_clear_sync) secret_password_clear_sync; | |
21 static decltype(&::secret_item_get_secret) secret_item_get_secret; | |
22 static decltype(&::secret_value_get_text) secret_value_get_text; | |
23 static decltype(&::secret_item_get_attributes) secret_item_get_attributes; | |
24 static decltype(&::secret_item_load_secret_sync) secret_item_load_secret_sync; | |
25 static decltype(&::secret_value_unref) secret_value_unref; | |
26 | |
27 // Loads the libsecret library and checks that it responds to queries. | |
28 // Returns false if either step fails. | |
29 // Repeated calls check the responsiveness every time, but do not load the | |
30 // the library again if already successful. | |
31 static bool EnsureLibsecretLoaded(); | |
32 | |
33 protected: | |
34 static bool libsecret_loaded_; | |
35 | |
36 private: | |
37 struct FunctionInfo { | |
38 const char* name; | |
39 void** pointer; | |
40 }; | |
41 | |
42 static const FunctionInfo kFunctions[]; | |
43 | |
44 // Load the libsecret binaries. Returns true on success. | |
45 // If successful, the result is cached and the function can be safely called | |
46 // multiple times. | |
47 // Checking |LibsecretIsAvailable| is necessary after this to verify that the | |
48 // service responds to queries. | |
49 static bool LoadLibsecret(); | |
50 | |
51 // True if the libsecret binaries have been loaded and the library responds | |
52 // to queries. | |
53 static bool LibsecretIsAvailable(); | |
54 | |
55 DISALLOW_IMPLICIT_CONSTRUCTORS(LibsecretLoader); | |
56 }; | |
57 | |
58 class LibsecretAttributesBuilder { | |
59 public: | |
60 LibsecretAttributesBuilder(); | |
61 ~LibsecretAttributesBuilder(); | |
62 | |
63 void Append(const std::string& name, const std::string& value); | |
64 | |
65 void Append(const std::string& name, int64_t value); | |
66 | |
67 // GHashTable, its keys and values returned from Get() are destroyed in | |
68 // |LibsecretAttributesBuilder| destructor. | |
69 GHashTable* Get() { return attrs_; } | |
70 | |
71 private: | |
72 // |name_values_| is a storage for strings referenced in |attrs_|. | |
73 // TODO(crbug.com/607950): Make implementation more robust by not depending on | |
74 // the implementation details of containers. External objects keep references | |
75 // to the objects stored in this container. Using a vector here will fail the | |
76 // ASan tests, because it may move the objects and break the references. | |
77 std::list<std::string> name_values_; | |
78 GHashTable* attrs_; | |
79 | |
80 DISALLOW_COPY_AND_ASSIGN(LibsecretAttributesBuilder); | |
81 }; | |
82 | |
83 #endif // COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_POSIX_H_ | |
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