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// Copyright 2016 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.
#ifndef COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_
#define COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_
#include <libsecret/secret.h>
#include <list>
#include <string>
#include "base/macros.h"
// Utility for dynamically loading libsecret.
class LibsecretLoader {
public:
static decltype(&::secret_item_get_attributes) secret_item_get_attributes;
static decltype(&::secret_item_get_secret) secret_item_get_secret;
static decltype(&::secret_item_load_secret_sync) secret_item_load_secret_sync;
static decltype(&::secret_password_clear_sync) secret_password_clear_sync;
static decltype(&::secret_password_store_sync) secret_password_store_sync;
static decltype(&::secret_service_search_sync) secret_service_search_sync;
static decltype(&::secret_value_get_text) secret_value_get_text;
static decltype(&::secret_value_unref) secret_value_unref;
// Loads the libsecret library and checks that it responds to queries.
// Returns false if either step fails.
// Repeated calls check the responsiveness every time, but do not load the
// the library again if already successful.
static bool EnsureLibsecretLoaded();
// Ensure that the default keyring is accessible. This won't prevent the user
// from locking their keyring while Chrome is running.
static void EnsureKeyringUnlocked();
protected:
static bool libsecret_loaded_;
private:
struct FunctionInfo {
const char* name;
void** pointer;
};
static const FunctionInfo kFunctions[];
// Load the libsecret binaries. Returns true on success.
// If successful, the result is cached and the function can be safely called
// multiple times.
// Checking |LibsecretIsAvailable| is necessary after this to verify that the
// service responds to queries.
static bool LoadLibsecret();
// True if the libsecret binaries have been loaded and the library responds
// to queries.
static bool LibsecretIsAvailable();
DISALLOW_IMPLICIT_CONSTRUCTORS(LibsecretLoader);
};
class LibsecretAttributesBuilder {
public:
LibsecretAttributesBuilder();
~LibsecretAttributesBuilder();
void Append(const std::string& name, const std::string& value);
void Append(const std::string& name, int64_t value);
// GHashTable, its keys and values returned from Get() are destroyed in
// |LibsecretAttributesBuilder| destructor.
GHashTable* Get() { return attrs_; }
private:
// |name_values_| is a storage for strings referenced in |attrs_|.
// TODO(crbug.com/607950): Make implementation more robust by not depending on
// the implementation details of containers. External objects keep references
// to the objects stored in this container. Using a vector here will fail the
// ASan tests, because it may move the objects and break the references.
std::list<std::string> name_values_;
GHashTable* attrs_;
DISALLOW_COPY_AND_ASSIGN(LibsecretAttributesBuilder);
};
#endif // COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_
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