pidgin/pidgin

facebook: Store sent message id in lastmid, to deduplicate echoed messages

2016-10-22, dequis
6d85d309f8e4
facebook: Store sent message id in lastmid, to deduplicate echoed messages

This is crappy and error prone, just like the rest of the duplicate
message handling code. It works, but it's going to get some echoes now
and then, particularly in quick moving groupchats.

I'm pretty sure this is a bug in the server, but the official clients
have much more elaborate deduplication built-in, so they won't notice.
/* purple
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#ifndef _PURPLE_CORE_H_
#define _PURPLE_CORE_H_
/**
* SECTION:core
* @section_id: libpurple-core
* @short_description: <filename>core.h</filename>
* @title: Startup and Shutdown of libpurple
* @see_also: <link linkend="chapter-signals-core">Core signals</link>
*/
#include <glib.h>
#include <glib-object.h>
#define PURPLE_TYPE_CORE_UI_OPS (purple_core_ui_ops_get_type())
typedef struct PurpleCore PurpleCore;
typedef struct _PurpleCoreUiOps PurpleCoreUiOps;
/**
* PurpleCoreUiOps:
* @ui_prefs_init: Called just after the preferences subsystem is initialized;
* the UI could use this callback to add some preferences it
* needs to be in place when other subsystems are initialized.
* @debug_ui_init: Called just after the debug subsystem is initialized, but
* before just about every other component's initialization. The
* UI should use this hook to call purple_debug_set_ui_ops() so
* that debugging information for other components can be logged
* during their initialization.
* @ui_init: Called after all of libpurple has been initialized. The UI
* should use this hook to set all other necessary
* <link linkend="chapter-ui-ops"><literal>UiOps structures</literal></link>.
* @quit: Called after most of libpurple has been uninitialized.
* @get_ui_info: Called by purple_core_get_ui_info(); should return the
* information documented there.
*
* Callbacks that fire at different points of the initialization and teardown
* of libpurple, along with a hook to return descriptive information about the
* UI.
*/
struct _PurpleCoreUiOps
{
void (*ui_prefs_init)(void);
void (*debug_ui_init)(void);
void (*ui_init)(void);
void (*quit)(void);
GHashTable* (*get_ui_info)(void);
/*< private >*/
void (*_purple_reserved1)(void);
void (*_purple_reserved2)(void);
void (*_purple_reserved3)(void);
void (*_purple_reserved4)(void);
};
G_BEGIN_DECLS
/**
* purple_core_ui_ops_get_type:
*
* Returns: The #GType for the #PurpleCoreUiOps boxed structure.
*/
GType purple_core_ui_ops_get_type(void);
/**
* purple_core_init:
* @ui: The ID of the UI using the core. This should be a
* unique ID, registered with the purple team.
*
* Initializes the core of purple.
*
* This will setup preferences for all the core subsystems.
*
* Returns: %TRUE if successful, or %FALSE otherwise.
*/
gboolean purple_core_init(const char *ui);
/**
* purple_core_quit:
*
* Quits the core of purple, which, depending on the UI, may quit the
* application using the purple core.
*/
void purple_core_quit(void);
/**
* purple_core_quit_cb:
*
* Calls purple_core_quit(). This can be used as the function
* passed to purple_timeout_add() when you want to shutdown Purple
* in a specified amount of time. When shutting down Purple
* from a plugin, you must use this instead of purple_core_quit();
* for an immediate exit, use a timeout value of 0:
*
* <programlisting>
* purple_timeout_add(0, purple_core_quitcb, NULL)
* </programlisting>
*
* This is ensures that code from your plugin is not being
* executed when purple_core_quit() is called. If the plugin
* called purple_core_quit() directly, you would get a core dump
* after purple_core_quit() executes and control returns to your
* plugin because purple_core_quit() frees all plugins.
*/
gboolean purple_core_quit_cb(gpointer unused);
/**
* purple_core_get_version:
*
* Returns the version of the core library.
*
* Returns: The version of the core library.
*/
const char *purple_core_get_version(void);
/**
* purple_core_get_ui:
*
* Returns the ID of the UI that is using the core, as passed to
* purple_core_init().
*
* Returns: The ID of the UI that is currently using the core.
*/
const char *purple_core_get_ui(void);
/**
* purple_get_core:
*
* This is used to connect to
* <link linkend="chapter-signals-core">core signals</link>.
*
* Returns: A handle to the purple core.
*/
PurpleCore *purple_get_core(void);
/**
* purple_core_set_ui_ops:
* @ops: A UI ops structure for the core.
*
* Sets the UI ops for the core.
*/
void purple_core_set_ui_ops(PurpleCoreUiOps *ops);
/**
* purple_core_get_ui_ops:
*
* Returns the UI ops for the core.
*
* Returns: The core's UI ops structure.
*/
PurpleCoreUiOps *purple_core_get_ui_ops(void);
/**
* purple_core_ensure_single_instance:
*
* Ensures that only one instance is running. If libpurple is built with D-Bus
* support, this checks if another process owns the libpurple bus name and if
* so whether that process is using the same configuration directory as this
* process.
*
* Returns: %TRUE if this is the first instance of libpurple running;
* %FALSE if there is another instance running.
*/
gboolean purple_core_ensure_single_instance(void);
/**
* purple_core_get_ui_info:
*
* Returns a hash table containing various information about the UI. The
* following well-known entries may be in the table (along with any others the
* UI might choose to include):
*
* <informaltable frame='none'>
* <tgroup cols='2'><tbody>
* <row>
* <entry><literal>name</literal></entry>
* <entry>the user-readable name for the UI.</entry>
* </row>
* <row>
* <entry><literal>version</literal></entry>
* <entry>a user-readable description of the current version of the UI.</entry>
* </row>
* <row>
* <entry><literal>website</literal></entry>
* <entry>the UI's website, such as https://pidgin.im.</entry>
* </row>
* <row>
* <entry><literal>dev_website</literal></entry>
* <entry>the UI's development/support website, such as
* https://developer.pidgin.im.</entry>
* </row>
* <row>
* <entry><literal>client_type</literal></entry>
* <entry>the type of UI. Possible values include 'pc', 'console', 'phone',
* 'handheld', 'web', and 'bot'. These values are compared
* programmatically and should not be localized.</entry>
* </row>
* </tbody></tgroup>
* </informaltable>
*
* Returns: A GHashTable with strings for keys and values. This
* hash table must not be freed and should not be modified.
*
*/
GHashTable* purple_core_get_ui_info(void);
G_END_DECLS
#endif /* _PURPLE_CORE_H_ */
/*
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*/