pidgin/pidgin

GSoC History API including sqlite history adapter

2021-10-12, James Culver
741992355ead
GSoC History API including sqlite history adapter

The History API has been created to drive all message handling in purple3. It will be used to update existing messages for edits, reactions, pinning, read/deliver receipts, etc. The API uses an adapter pattern, to abstract out backends, but provides a SQLite3 backend by default.

It also provides search capabilities using a custom query language that can easily be expanded over time. It will be use by both the end user to search messages and the frontends to implement features like a pinned messages button. A command line utility is also provided for searching outside of the program itself.

## Remaining Items

**These all will most likely be done by the Pidgin core team after GSoC when we figure out exactly how to solve them.**

Need to store database in purple config directory
* Gary has spent some time looking at this and it looks like the purple-history cli will need to become a purple-ui to make this work write as in the future other adapters will be plugins.

Other things to consider:
- For simplicity, the SqliteHistoryAdapter is parsing the query itself, but for consistency having `PurpleHistoryAdapter` parse the query and pass tokens to the subclass might be something we want to do.

Testing Done:
## Unit Tests
History Manager
History Adapter

## Integration Tests
purplehistorycore created for integration tests.
PurpleSqliteHistoryAdapter functionality tested:
- Creates proper db schema
- Writes logs
- Reads logs
- Queries using query language
- Deletes using query language

Bugs closed: PIDGIN-17526, PIDGIN-17532, PIDGIN-17533, PIDGIN-17534

Reviewed at https://reviews.imfreedom.org/r/877/
/*
* Purple - Internet Messaging Library
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#if !defined(PURPLE_GLOBAL_HEADER_INSIDE) && !defined(PURPLE_COMPILATION)
# error "only <purple.h> may be included directly"
#endif
#ifndef PURPLE_CREDENTIAL_PROVIDER_H
#define PURPLE_CREDENTIAL_PROVIDER_H
#include <glib.h>
#include <glib-object.h>
#include "account.h"
#include "request.h"
/**
* SECTION:purplecredentialprovider
* @section_id: libpurple-purplecredentialprovider
* @title: Credential Provider Object
* @short_description: Abstraction of credential providers.
*
* #PurpleCredentialProvider is an abstract base class for implementing support
* for a specific password or keyring manager. At the time of this writing,
* libpurple ships with plugins for libsecret, KWallet, and the Windows
* Credentials store by subclassing #PurpleCredentialProvider.
*/
G_BEGIN_DECLS
/**
* PURPLE_CREDENTIAL_PROVIDER_DOMAIN:
*
* A #GError domain for errors from #PurpleCredentialProviders.
*
* Since: 3.0.0
*/
#define PURPLE_CREDENTIAL_PROVIDER_DOMAIN (g_quark_from_static_string("purple-credential-provider"))
/**
* PurpleCredentialProvider:
*
* #PurpleCredentialProvider is a base class that should be sub classed by
* credential providers. It defines the behavior of all credential providers
* and implements some shared properties.
*
* Since: 3.0.0
*/
/**
* PURPLE_TYPE_CREDENTIAL_PROVIDER:
*
* The standard _TYPE_ macro for PurpleCredentialProvider.
*
* Since: 3.0.0
*/
#define PURPLE_TYPE_CREDENTIAL_PROVIDER (purple_credential_provider_get_type())
/**
* purple_credential_provider_get_type:
*
* Gets the #GType of #PurpleCredentialProvider.
*
* Returns: The #GType of #PurpleCredentialProvider.
*
* Since: 3.0.0
*/
G_DECLARE_DERIVABLE_TYPE(PurpleCredentialProvider, purple_credential_provider,
PURPLE, CREDENTIAL_PROVIDER, GObject)
/**
* PurpleCredentialProviderClass:
* @activate: Called when the provider is made active.
* @deactivate: Called when another provider has been made active.
* @read_password_async: Reads a password from the provider.
* @read_password_finish: Finishes reading a password.
* @write_password_async: Writes a password to the provider.
* @write_password_finish: Finishes writing a password.
* @clear_password_async: Clears a password from the provider.
* @clear_password_finish: Finishes clearing a password from the provider.
* @read_settings: Creates a #PurpleRequestFields for the available settings.
* @write_settings: Updates the settings for provider.
*
* #PurpleCredentialProviderClass defines the interface for interacting with
* credential providers like libsecret, kwallet, etc.
*
* Since: 3.0.0
*/
struct _PurpleCredentialProviderClass {
/*< private >*/
GObjectClass parent;
/*< public >*/
void (*activate)(PurpleCredentialProvider *provider);
void (*deactivate)(PurpleCredentialProvider *provider);
void (*read_password_async)(PurpleCredentialProvider *provider, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
gchar *(*read_password_finish)(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
void (*write_password_async)(PurpleCredentialProvider *provider, PurpleAccount *account, const gchar *password, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
gboolean (*write_password_finish)(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
void (*clear_password_async)(PurpleCredentialProvider *provider, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
gboolean (*clear_password_finish)(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
PurpleRequestFields *(*read_settings)(PurpleCredentialProvider *provider);
gboolean (*write_settings)(PurpleCredentialProvider *provider, PurpleRequestFields *fields);
/*< private >*/
/* Some extra padding to play it safe. */
gpointer reserved[8];
};
/**
* purple_credential_provider_get_id:
* @provider: The #PurpleCredentialProvider instance.
*
* Gets the identifier of @provider.
*
* Returns: The identifier of @provider.
*
* Since: 3.0.0
*/
const gchar *purple_credential_provider_get_id(PurpleCredentialProvider *provider);
/**
* purple_credential_provider_get_name:
* @provider: The #PurpleCredentialProvider instance.
*
* Gets the name of @provider which can be show in user interfaces.
*
* Returns: The name of @provider.
*
* Since: 3.0.0
*/
const gchar *purple_credential_provider_get_name(PurpleCredentialProvider *provider);
/**
* purple_credential_provider_get_description:
* @provider: The #PurpleCredentialProvider instance.
*
* Gets the description of @provider which can be displayed in user interfaces
* to help users figure out which provider to use.
*
* Returns: The description of @provider.
*
* Since: 3.0.0
*/
const gchar *purple_credential_provider_get_description(PurpleCredentialProvider *provider);
/**
* purple_credential_provider_is_valid:
* @provider: The #PurpleCredentialProvider instance.
* @error: (out) (optional) (nullable): Return address for a #GError.
*
* Checks whether or not @provider is setup correctly. This is primarily meant
* for #purple_credential_provider_register_provider to call to avoid
* programming errors, but can be used by anyone.
*
* Returns: %FALSE on error, otherwise %TRUE.
*
* Since: 3.0.0
*/
gboolean purple_credential_provider_is_valid(PurpleCredentialProvider *provider, GError **error);
/**
* purple_credential_provider_read_password_async:
* @provider: The #PurpleCredentialProvider instance.
* @account: The #PurpleAccount whose password to read.
* @cancellable: (nullable): optional GCancellable object, %NULL to ignore.
* @callback: (scope async): a #GAsyncReadyCallback to call when the request is
* satisfied.
* @data: User data to pass to @callback.
*
* Reads the password for @account from @provider.
*
* Since: 3.0.0
*/
void purple_credential_provider_read_password_async(PurpleCredentialProvider *provider, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_provider_read_password_finish:
* @provider: The #PurpleCredentialProvider instance.
* @result: The #GAsyncResult from the previous
* purple_credential_provider_read_password_async() call.
* @error: (out) (optional) (nullable): Return address for a #GError.
*
* Finishes a previous call to purple_credential_provider_read_password_async().
*
* Returns: (transfer full): The password or %NULL if successful, otherwise
* %NULL with @error set on failure.
*
* Since: 3.0.0
*/
gchar *purple_credential_provider_read_password_finish(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
/**
* purple_credential_provider_write_password_async:
* @provider: The #PurpleCredentialProvider instance.
* @account: The #PurpleAccount whose password to write.
* @password: The password to write.
* @cancellable: (nullable): optional GCancellable object, %NULL to ignore.
* @callback: (scope async): a #GAsyncReadyCallback to call when the request is
* satisfied.
* @data: User data to pass to @callback.
*
* Writes @password for @account to @provider.
*
* Since: 3.0.0
*/
void purple_credential_provider_write_password_async(PurpleCredentialProvider *provider, PurpleAccount *account, const gchar *password, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_provider_write_password_finish:
* @provider: The #PurpleCredentialProvider instance.
* @result: The #GAsyncResult from the previous
* purple_credential_provider_write_password_async() call.
* @error: (out) (optional) (nullable): Return address for a #GError.
*
* Finishes a previous call to
* purple_credential_provider_write_password_async().
*
* Returns: %TRUE if the password was written successfully, otherwise %FALSE
* with @error set.
*
* Since: 3.0.0
*/
gboolean purple_credential_provider_write_password_finish(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
/**
* purple_credential_provider_clear_password_async:
* @provider: The #PurpleCredentialProvider instance.
* @account: The #PurpleAccount whose password to clear.
* @cancellable: (nullable): optional #GCancellable object, or %NULL to ignore.
* @callback: (scope async): a #GAsyncReadyCallback to call when the request is
* satisfied.
* @data: User data to pass to @callback.
*
* Clears the password for @account from @provider.
*
* Since: 3.0.0
*/
void purple_credential_provider_clear_password_async(PurpleCredentialProvider *provider, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_provider_clear_password_finish:
* @provider: The #PurpleCredentialProvider instance.
* @result: The #GAsyncResult from the previous
* purple_credential_provider_clear_password_async() call.
* @error: (out) (optional) (nullable): Return address for a #GError.
*
* Finishes a previous call to
* purple_credential_provider_clear_password_async().
*
* Returns: %TRUE if the password didn't exist or was cleared successfully,
* otherwise %FALSE with @error set.
*
* Since: 3.0.0
*/
gboolean purple_credential_provider_clear_password_finish(PurpleCredentialProvider *provider, GAsyncResult *result, GError **error);
/**
* purple_credential_provider_read_settings:
* @provider: The #PurpleCredentialProvider instance.
*
* Reads settings from @provider.
*
* Returns: (transfer full): New copy of current settings which must be free'd
* with purple_request_fields_destroy().
*
* Since: 3.0.0
*/
PurpleRequestFields *purple_credential_provider_read_settings(PurpleCredentialProvider *provider);
/**
* purple_credential_provider_write_settings:
* @provider: The #PurpleCredentialProvider instance.
* @fields: Modified settings from purple_credential_provider_read_settings().
*
* Write @fields to @provider.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*
* Since: 3.0.0
*/
gboolean purple_credential_provider_write_settings(PurpleCredentialProvider *provider, PurpleRequestFields *fields);
G_END_DECLS
#endif /* PURPLE_CREDENTIAL_PROVIDER */