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 program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#if !defined(PURPLE_GLOBAL_HEADER_INSIDE) && !defined(PURPLE_COMPILATION)
# error "only <pidgin.h> may be included directly"
#endif
#ifndef PURPLE_CREDENTIAL_MANAGER_H
#define PURPLE_CREDENTIAL_MANAGER_H
#include <glib.h>
#include <glib-object.h>
#include "account.h"
#include <purplecredentialprovider.h>
G_BEGIN_DECLS
/**
* SECTION:purplecredentialmanager
* @section_id: libpurple-purplecredentialmanager
* @title: Purple Credential Manager
* @short_description: Management of credential providers.
*
* Purple Credential Manager is the main API access to different credential
* providers. Providers register themselves with the manager and then the user
* can choose which provider to use.
*
* Once a provider is selected, all credential access will be directed to that
* provider.
*/
/**
* PURPLE_CREDENTIAL_MANAGER_DOMAIN:
*
* A #GError domain for errors from #PurpleCredentialManager.
*
* Since: 3.0.0
*/
#define PURPLE_CREDENTIAL_MANAGER_DOMAIN (g_quark_from_static_string("purple-credential-manager"))
/**
* PURPLE_TYPE_CREDENTIAL_MANAGER:
*
* The standard _get_type macro for #PurpleCredentialManager.
*
* Since: 3.0.0
*/
#define PURPLE_TYPE_CREDENTIAL_MANAGER (purple_credential_manager_get_type())
G_DECLARE_DERIVABLE_TYPE(PurpleCredentialManager, purple_credential_manager,
PURPLE, CREDENTIAL_MANAGER, GObject)
/**
* PurpleCredentialManager:
*
* An opaque data structure that manages credentials.
*
* Since: 3.0.0
*/
/**
* PurpleCredentialManagerClass:
* @registered: The default signal handler for when a provider is registered.
* @unregistered: The default signal handler for when a provider is
* unregistered.
* @active_changed: The default signal handler for when the active provider is
* changed.
*
* The class structure for #PurpleCredentialProvider.
*
* Since: 3.0.0
*/
struct _PurpleCredentialManagerClass {
/*< private >*/
GObjectClass parent;
/*< public >*/
void (*registered)(PurpleCredentialManager *manager, PurpleCredentialProvider *provider);
void (*unregistered)(PurpleCredentialManager *manager, PurpleCredentialProvider *provider);
void (*active_changed)(PurpleCredentialManager *manager, PurpleCredentialProvider *previous, PurpleCredentialProvider *current);
/*< private >*/
gpointer reserved[8];
};
/**
* PurpleCredentialManagerForeachFunc:
* @provider: The #PurpleCredentialProvider instance.
* @data: User supplied data.
*
* A function to be used as a callback with purple_credential_manager_foreach().
*
* Since: 3.0.0
*/
typedef void (*PurpleCredentialManagerForeachFunc)(PurpleCredentialProvider *provider, gpointer data);
/**
* purple_credential_manager_get_default:
*
* Gets the default #PurpleCredentialManager instance.
*
* Returns: (transfer none): The default #PurpleCredentialManager instance.
*
* Since: 3.0.0
*/
PurpleCredentialManager *purple_credential_manager_get_default(void);
/**
* purple_credential_manager_register:
* @manager: The #PurpleCredentialManager instance.
* @provider: The #PurpleCredentialProvider to register.
* @error: (out) (optional) (nullable): A return address for a #GError.
*
* Registers @provider with @manager.
*
* Returns: %TRUE if @provider was successfully registered with @manager, %FALSE
* otherwise.
*
* Since: 3.0.0
*/
gboolean purple_credential_manager_register(PurpleCredentialManager *manager, PurpleCredentialProvider *provider, GError **error);
/**
* purple_credential_manager_unregister:
* @manager: The #PurpleCredentialManager instance.
* @provider: The #PurpleCredentialProvider to unregister.
* @error: (out) (optional) (nullable): A return address for a #GError.
*
* Unregisters @provider from @manager.
*
* Returns: %TRUE if @provider was successfully unregistered from @provider,
* %FALSE otherwise.
*
* Since: 3.0.0
*/
gboolean purple_credential_manager_unregister(PurpleCredentialManager *manager, PurpleCredentialProvider *provider, GError **error);
/**
* purple_credential_manager_set_active:
* @manager: The #PurpleCredentialManager instance.
* @id: The id of the #PurpleCredentialProvider to use or %NULL to disable the
* active provider.
* @error: (out) (optional) (nullable): A return address for a #GError.
*
* Changes the active #PurpleCredentialProvider of @manager to provider with an
* id of @id.
*
* Returns: %TRUE on success or %FALSE with @error set on failure.
*
* Since: 3.0.0
*/
gboolean purple_credential_manager_set_active(PurpleCredentialManager *manager, const gchar *id, GError **error);
/**
* purple_credential_manager_get_active:
* @manager: The #PurpleCredentialManager instance.
*
* Gets the currently active #PurpleCredentialProvider or %NULL if there is no
* active provider.
*
* Returns: (transfer none): The active #PurpleCredentialProvider.
*
* Since: 3.0.0
*/
PurpleCredentialProvider *purple_credential_manager_get_active(PurpleCredentialManager *manager);
/**
* purple_credential_manager_read_password_async:
* @manager: The #PurpleCredentialManager 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 using the active #PurpleCredentialProvider of
* @manager.
*
* Since: 3.0.0
*/
void purple_credential_manager_read_password_async(PurpleCredentialManager *manager, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_manager_read_password_finish:
* @manager: The #PurpleCredentialManager instance.
* @result: The #GAsyncResult from the previous
* purple_credential_manager_read_password_async() call.
* @error: (out) (optional): Return address for a #GError.
*
* Finishes a previous call to purple_credential_manager_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_manager_read_password_finish(PurpleCredentialManager *manager, GAsyncResult *result, GError **error);
/**
* purple_credential_manager_write_password_async:
* @manager: The #PurpleCredentialManager 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 the active #PurpleCredentialProvider of
* @manager.
*
* Since: 3.0.0
*/
void purple_credential_manager_write_password_async(PurpleCredentialManager *manager, PurpleAccount *account, const gchar *password, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_manager_write_password_finish:
* @manager: The #PurpleCredentialManager 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_manager_write_password_async().
*
* Returns: %TRUE if the password was written successfully, otherwise %FALSE
* with @error set.
*
* Since: 3.0.0
*/
gboolean purple_credential_manager_write_password_finish(PurpleCredentialManager *manager, GAsyncResult *result, GError **error);
/**
* purple_credential_manager_clear_password_async:
* @manager: The #PurpleCredentialManager 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 the active #PurpleCredentialProvider
* of @manager.
*
* Since: 3.0.0
*/
void purple_credential_manager_clear_password_async(PurpleCredentialManager *manager, PurpleAccount *account, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data);
/**
* purple_credential_manager_clear_password_finish:
* @manager: The #PurpleCredentialManager 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_manager_clear_password_finish(PurpleCredentialManager *manager, GAsyncResult *result, GError **error);
/**
* purple_credential_manager_read_settings:
* @manager: The #PurpleCredentialManager instance.
* @error: (out) (optional) (nullable): A return address for a #GError.
*
* Reads settings from the active #PurpleCredentialProvider of @manager.
*
* 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_manager_read_settings(PurpleCredentialManager *manager, GError **error);
/**
* purple_credential_manager_write_settings:
* @manager: The #PurpleCredentialManager instance.
* @fields: (transfer full): Modified settings from
* purple_credential_manager_read_settings().
* @error: (out) (optional) (nullable): A return address for a #GError.
*
* Write @fields to the active #PurpleCredentialProvider of @manager.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*
* Since: 3.0.0
*/
gboolean purple_credential_manager_write_settings(PurpleCredentialManager *manager, PurpleRequestFields *fields, GError **error);
/**
* purple_credential_manager_foreach:
* @manager: The #PurpleCredentialManager instance.
* @func: (scope call): The #PurpleCredentialManagerForeachFunc to call.
* @data: User data to pass to @func.
*
* Calls @func for each #PurpleCredentialProvider that @manager knows about.
*
* Since: 3.0.0
*/
void purple_credential_manager_foreach(PurpleCredentialManager *manager, PurpleCredentialManagerForeachFunc func, gpointer data);
G_END_DECLS
#endif /* PURPLE_CREDENTIAL_MANAGER_H */