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>
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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 <purple.h> may be included directly"
#endif
#ifndef PURPLE_UPNP_H
#define PURPLE_UPNP_H
/**
* SECTION:upnp
* @section_id: libpurple-upnp
* @short_description: <filename>upnp.h</filename>
* @title: Universal Plug N Play API
*
* The UPNP API allows us to use Universal Plug and Play to determine a user's
* public IP address as well as open port forwards.
*/
typedef struct _PurpleUPnPMappingAddRemove PurpleUPnPMappingAddRemove;
G_BEGIN_DECLS
/**************************************************************************/
/* UPnP API */
/**************************************************************************/
/* typedef struct _PurpleUPnPRequestData PurpleUPnPRequestData; */
typedef void (*PurpleUPnPCallback) (gboolean success, gpointer data);
/**
* purple_upnp_init:
*
* Initialize UPnP
*/
void purple_upnp_init(void);
/**
* purple_upnp_uninit:
*
* Shuts down UPnP
*/
void purple_upnp_uninit(void);
/**
* purple_upnp_discover:
* @cb: (scope async): An optional callback function to be notified when the
* UPnP discovery is complete.
* @cb_data: (closure): Extra data to be passed to the callback.
*
* Sends a discovery request to search for a UPnP enabled IGD that
* contains the WANIPConnection service that will allow us to receive the
* public IP address of the IGD, and control it for forwarding ports.
* The result will be cached for further use.
*/
void purple_upnp_discover(PurpleUPnPCallback cb, gpointer cb_data);
/**
* purple_upnp_get_public_ip:
*
* Gets the IP address from a UPnP enabled IGD that sits on the local
* network, so when getting the network IP, instead of returning the
* local network IP, the public IP is retrieved. This is a cached value from
* the time of the UPnP discovery.
*
* Returns: The IP address of the network, or NULL if something went wrong
*/
const gchar* purple_upnp_get_public_ip(void);
/**
* purple_upnp_cancel_port_mapping:
* @mapping_data: The data returned when you initiated the UPnP mapping request.
*
* Cancel a pending port mapping request initiated with either
* purple_upnp_set_port_mapping() or purple_upnp_remove_port_mapping().
*/
void purple_upnp_cancel_port_mapping(PurpleUPnPMappingAddRemove *mapping_data);
/**
* purple_upnp_set_port_mapping:
* @portmap: The port to map to this client
* @protocol: The protocol to map, either "TCP" or "UDP"
* @cb: (scope async): An optional callback function to be notified when the
* mapping addition is complete.
* @cb_data: (closure): Extra data to be passed to the callback.
*
* Maps Ports in a UPnP enabled IGD that sits on the local network to
* this purple client. Essentially, this function takes care of the port
* forwarding so things like file transfers can work behind NAT firewalls
*
* Returns: (transfer full): Data which can be passed to purple_upnp_cancel_port_mapping() to
* cancel
*/
PurpleUPnPMappingAddRemove *purple_upnp_set_port_mapping(unsigned short portmap, const gchar* protocol,
PurpleUPnPCallback cb, gpointer cb_data);
/**
* purple_upnp_remove_port_mapping:
* @portmap: The port to delete the mapping for
* @protocol: The protocol to map to. Either "TCP" or "UDP"
* @cb: (scope async): An optional callback function to be notified when the
* mapping removal is complete.
* @cb_data: (closure): Extra data to be passed to the callback.
*
* Deletes a port mapping in a UPnP enabled IGD that sits on the local network
* to this purple client. Essentially, this function takes care of deleting the
* port forwarding after they have completed a connection so another client on
* the local network can take advantage of the port forwarding
*
* Returns: (transfer full): Data which can be passed to purple_upnp_cancel_port_mapping() to
* cancel
*/
PurpleUPnPMappingAddRemove *purple_upnp_remove_port_mapping(unsigned short portmap,
const gchar* protocol, PurpleUPnPCallback cb, gpointer cb_data);
G_END_DECLS
#endif /* PURPLE_UPNP_H */