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util/filters.lua @ 12482:b193f8a2737e

mod_tls: Do not offer TLS if the connection is considered secure This may be necessary if the session.conn object is not exchanged by the network backend when establishing TLS. In that case, the starttls method will always exist and thus that is not a good indicator for offering TLS. However, the secure bit already tells us that TLS has been established or is not to be established on the connection, so we use that instead.

author	Jonas Schäfer <jonas@wielicki.name>
date	Fri, 17 Sep 2021 21:18:30 +0200
parent	8555:4f0f5b49bb03

rev	line source
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	1 -- Prosody IM
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	2 -- Copyright (C) 2008-2010 Matthew Wild
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	3 -- Copyright (C) 2008-2010 Waqas Hussain
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	4 --
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	5 -- This project is MIT/X11 licensed. Please see the
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	6 -- COPYING file in the source package for more information.
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	7 --
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	8
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	9 local t_insert, t_remove = table.insert, table.remove;
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	10
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	11 local _ENV = nil;
8555 4f0f5b49bb03 vairious: Add annotation when an empty environment is set [luacheck] Kim Alvefur <zash@zash.se> parents: 6777 diff changeset	12 -- luacheck: std none
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	13
3625 f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	14 local new_filter_hooks = {};
f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	15
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	16 local function initialize(session)
3142 3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	17 if not session.filters then
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	18 local filters = {};
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	19 session.filters = filters;
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	20
3142 3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	21 function session.filter(type, data)
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	22 local filter_list = filters[type];
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	23 if filter_list then
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	24 for i = 1, #filter_list do
3625 f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	25 data = filter_list[i](data, session);
3142 3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	26 if data == nil then break; end
3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	27 end
3139 7b4f180d7c6f util.filters: Don't traceback with no filters of a type added Matthew Wild <mwild1@gmail.com> parents: 3135 diff changeset	28 end
3142 3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	29 return data;
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	30 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	31 end
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	32
3625 f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	33 for i=1,#new_filter_hooks do
f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	34 new_filter_hooks[i](session);
f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	35 end
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	36
3142 3cf02e5e632b util.filters: Ensure initialize() never initializes an object twice - and return the filter function to the caller Matthew Wild <mwild1@gmail.com> parents: 3140 diff changeset	37 return session.filter;
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	38 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	39
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	40 local function add_filter(session, type, callback, priority)
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	41 if not session.filters then
3134 9a29ad6a9b97 util.filters: Expose the initialization function Matthew Wild <mwild1@gmail.com> parents: 3133 diff changeset	42 initialize(session);
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	43 end
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	44
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	45 local filter_list = session.filters[type];
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	46 if not filter_list then
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	47 filter_list = {};
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	48 session.filters[type] = filter_list;
6366 8dee696c33cc util.filters: Ignore filters being added twice (fixes issues on removal) Matthew Wild <mwild1@gmail.com> parents: 5849 diff changeset	49 elseif filter_list[callback] then
8dee696c33cc util.filters: Ignore filters being added twice (fixes issues on removal) Matthew Wild <mwild1@gmail.com> parents: 5849 diff changeset	50 return; -- Filter already added
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	51 end
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	52
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	53 priority = priority or 0;
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	54
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	55 local i = 0;
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	56 repeat
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	57 i = i + 1;
5849 8f451d370dd4 util.filters: Fix inserting items so that higher priority filters run first Kim Alvefur <zash@zash.se> parents: 3943 diff changeset	58 until not filter_list[i] or filter_list[filter_list[i]] < priority;
5776 bd0ff8ae98a8 Remove all trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 3943 diff changeset	59
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	60 t_insert(filter_list, i, callback);
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	61 filter_list[callback] = priority;
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	62 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	63
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	64 local function remove_filter(session, type, callback)
3135 f29a297471e3 util.filters: Don't traceback when trying to remove a filter from an uninitialized object Matthew Wild <mwild1@gmail.com> parents: 3134 diff changeset	65 if not session.filters then return; end
3133 d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	66 local filter_list = session.filters[type];
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	67 if filter_list and filter_list[callback] then
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	68 for i=1, #filter_list do
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	69 if filter_list[i] == callback then
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	70 t_remove(filter_list, i);
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	71 filter_list[callback] = nil;
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	72 return true;
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	73 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	74 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	75 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	76 end
d3f16b4c1ecb util.filters: New utility library for managing filters on an object Matthew Wild <mwild1@gmail.com> parents: diff changeset	77
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	78 local function add_filter_hook(callback)
3625 f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	79 t_insert(new_filter_hooks, callback);
f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	80 end
f8d61da5bcc1 util.filters: Support for 'filter hooks' that get called when a session is initialized for filters Matthew Wild <mwild1@gmail.com> parents: 3331 diff changeset	81
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	82 local function remove_filter_hook(callback)
3943 ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	83 for i=1,#new_filter_hooks do
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	84 if new_filter_hooks[i] == callback then
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	85 t_remove(new_filter_hooks, i);
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	86 end
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	87 end
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	88 end
ad5924c31953 util.filters: Add remove_filter_hook() Matthew Wild <mwild1@gmail.com> parents: 3625 diff changeset	89
6777 5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	90 return {
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	91 initialize = initialize;
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	92 add_filter = add_filter;
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	93 remove_filter = remove_filter;
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	94 add_filter_hook = add_filter_hook;
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	95 remove_filter_hook = remove_filter_hook;
5de6b93d0190 util.: Remove use of module() function, make all module functions local and return them in a table at the end Kim Alvefur <zash@zash.se>* parents: 6367 diff changeset	96 };

prosody

b193f8a2737e

util/filters.lua

Software / code / prosody

Annotate

util/filters.lua @ 12482:b193f8a2737e

Software `/` code `/` prosody