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prosody modules: add util function for rewritesplit JID

This commit is contained in:
Aaron van Meerten 2020-07-14 16:49:51 -04:00
parent 51fd10278b
commit 25ded0bdeb
1 changed files with 27 additions and 2 deletions
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29
resources/prosody-plugins/util.lib.lua
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@ -18,14 +18,20 @@ local escaped_muc_domain_prefix = muc_domain_prefix:gsub("%p", "%%%1");
local target_subdomain_pattern
= "^"..escaped_muc_domain_prefix..".([^%.]+)%."..escaped_muc_domain_base;
-- Utility function to split room JID to include room name and subdomain
local function room_jid_split_subdomain(room_jid)
local node, host, resource = jid.split(room_jid);
local target_subdomain = host and host:match(target_subdomain_pattern);
return node, host, resource, target_subdomain
end
--- Utility function to check and convert a room JID from
-- virtual room1@muc.foo.example.com to real [foo]room1@muc.example.com
-- @param room_jid the room jid to match and rewrite if needed
-- @return returns room jid [foo]room1@muc.example.com when it has subdomain
-- otherwise room1@muc.example.com(the room_jid value untouched)
local function room_jid_match_rewrite(room_jid)
local node, host, resource = jid.split(room_jid);
local target_subdomain = host and host:match(target_subdomain_pattern);
local node, host, resource, target_subdomain = room_jid_split_subdomain(room_jid);
if not target_subdomain then
module:log("debug", "No need to rewrite out 'to' %s", room_jid);
return room_jid;
@ -38,6 +44,23 @@ local function room_jid_match_rewrite(room_jid)
return room_jid
end
local function internal_room_jid_match_rewrite(room_jid)
local node, host, resource = jid.split(room_jid);
if host ~= muc_domain or not node then
module:log("debug", "No need to rewrite %s (not from the MUC host)", room_jid);
return room_jid;
end
local target_subdomain, target_node = node:match("^%[([^%]]+)%](.+)$");
if not (target_node and target_subdomain) then
module:log("debug", "Not rewriting... unexpected node format: %s", node);
return room_jid;
end
-- Ok, rewrite room_jid address to pretty format
local new_node, new_host, new_resource = target_node, muc_domain_prefix..".".. target_subdomain.."."..muc_domain_base, resource;
room_jid = jid.join(new_node, new_host, new_resource);
module:log("debug", "Rewrote to %s", room_jid);
return room_jid
end
--- Finds and returns room by its jid
-- @param room_jid the room jid to search in the muc component
@ -191,5 +214,7 @@ return {
get_room_from_jid = get_room_from_jid;
async_handler_wrapper = async_handler_wrapper;
room_jid_match_rewrite = room_jid_match_rewrite;
room_jid_split_subdomain = room_jid_split_subdomain;
internal_room_jid_match_rewrite = internal_room_jid_match_rewrite;
update_presence_identity = update_presence_identity;
};