diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/filters.lua | 68 | ||||
| -rw-r--r-- | util/sasl/anonymous.lua | 10 | ||||
| -rw-r--r-- | util/xmppstream.lua | 168 |
3 files changed, 246 insertions, 0 deletions
diff --git a/util/filters.lua b/util/filters.lua new file mode 100644 index 00000000..0ac4cb56 --- /dev/null +++ b/util/filters.lua @@ -0,0 +1,68 @@ +-- Prosody IM +-- Copyright (C) 2008-2010 Matthew Wild +-- Copyright (C) 2008-2010 Waqas Hussain +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- + +local t_insert, t_remove = table.insert, table.remove; + +module "filters" + +function initialize(session) + if not session.filters then + local filters = {}; + session.filters = filters; + + function session.filter(type, data) + local filter_list = filters[type]; + if filter_list then + for i = 1, #filter_list do + data = filter_list[i](data); + if data == nil then break; end + end + end + return data; + end + end + return session.filter; +end + +function add_filter(session, type, callback, priority) + if not session.filters then + initialize(session); + end + + local filter_list = session.filters[type]; + if not filter_list then + filter_list = {}; + session.filters[type] = filter_list; + end + + priority = priority or 0; + + local i = 0; + repeat + i = i + 1; + until not filter_list[i] or filter_list[filter_list[i]] >= priority; + + t_insert(filter_list, i, callback); + filter_list[callback] = priority; +end + +function remove_filter(session, type, callback) + if not session.filters then return; end + local filter_list = session.filters[type]; + if filter_list and filter_list[callback] then + for i=1, #filter_list do + if filter_list[i] == callback then + t_remove(filter_list, i); + filter_list[callback] = nil; + return true; + end + end + end +end + +return _M;
\ No newline at end of file diff --git a/util/sasl/anonymous.lua b/util/sasl/anonymous.lua index 7b5a5081..f3e31a7f 100644 --- a/util/sasl/anonymous.lua +++ b/util/sasl/anonymous.lua @@ -20,6 +20,16 @@ module "anonymous" --========================= --SASL ANONYMOUS according to RFC 4505 + +--[[ +Supported Authentication Backends + +anonymous: + function(username, realm) + return true; --for normal usage just return true; if you don't like the supplied username you can return false. + end +]] + local function anonymous(self, message) local username; repeat diff --git a/util/xmppstream.lua b/util/xmppstream.lua new file mode 100644 index 00000000..ed5395b5 --- /dev/null +++ b/util/xmppstream.lua @@ -0,0 +1,168 @@ +-- Prosody IM +-- Copyright (C) 2008-2010 Matthew Wild +-- Copyright (C) 2008-2010 Waqas Hussain +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- + + +local lxp = require "lxp"; +local st = require "util.stanza"; + +local tostring = tostring; +local t_insert = table.insert; +local t_concat = table.concat; + +local default_log = require "util.logger".init("xmlhandlers"); + +local error = error; + +module "xmppstream" + +local new_parser = lxp.new; + +local ns_prefixes = { + ["http://www.w3.org/XML/1998/namespace"] = "xml"; +}; + +local xmlns_streams = "http://etherx.jabber.org/streams"; + +local ns_separator = "\1"; +local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$"; + +function new_sax_handlers(session, stream_callbacks) + local xml_handlers = {}; + + local log = session.log or default_log; + + local cb_streamopened = stream_callbacks.streamopened; + local cb_streamclosed = stream_callbacks.streamclosed; + local cb_error = stream_callbacks.error or function(session, e) error("XML stream error: "..tostring(e)); end; + local cb_handlestanza = stream_callbacks.handlestanza; + + local stream_ns = stream_callbacks.stream_ns or xmlns_streams; + local stream_tag = stream_ns..ns_separator..(stream_callbacks.stream_tag or "stream"); + local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error"); + + local stream_default_ns = stream_callbacks.default_ns; + + local chardata, stanza = {}; + function xml_handlers:StartElement(tagname, attr) + if stanza and #chardata > 0 then + -- We have some character data in the buffer + stanza:text(t_concat(chardata)); + chardata = {}; + end + local curr_ns,name = tagname:match(ns_pattern); + if name == "" then + curr_ns, name = "", curr_ns; + end + + if curr_ns ~= stream_default_ns then + attr.xmlns = curr_ns; + end + + -- FIXME !!!!! + for i=1,#attr do + local k = attr[i]; + attr[i] = nil; + local ns, nm = k:match(ns_pattern); + if nm ~= "" then + ns = ns_prefixes[ns]; + if ns then + attr[ns..":"..nm] = attr[k]; + attr[k] = nil; + end + end + end + + if not stanza then --if we are not currently inside a stanza + if session.notopen then + if tagname == stream_tag then + if cb_streamopened then + cb_streamopened(session, attr); + end + else + -- Garbage before stream? + cb_error(session, "no-stream"); + end + return; + end + if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then + cb_error(session, "invalid-top-level-element"); + end + + stanza = st.stanza(name, attr); + else -- we are inside a stanza, so add a tag + attr.xmlns = nil; + if curr_ns ~= stream_default_ns then + attr.xmlns = curr_ns; + end + stanza:tag(name, attr); + end + end + function xml_handlers:CharacterData(data) + if stanza then + t_insert(chardata, data); + end + end + function xml_handlers:EndElement(tagname) + if stanza then + if #chardata > 0 then + -- We have some character data in the buffer + stanza:text(t_concat(chardata)); + chardata = {}; + end + -- Complete stanza + if #stanza.last_add == 0 then + if tagname ~= stream_error_tag then + cb_handlestanza(session, stanza); + else + cb_error(session, "stream-error", stanza); + end + stanza = nil; + else + stanza:up(); + end + else + if tagname == stream_tag then + if cb_streamclosed then + cb_streamclosed(session); + end + else + local curr_ns,name = tagname:match(ns_pattern); + if name == "" then + curr_ns, name = "", curr_ns; + end + cb_error(session, "parse-error", "unexpected-element-close", name); + end + stanza, chardata = nil, {}; + end + end + + local function reset() + stanza, chardata = nil, {}; + end + + return xml_handlers, { reset = reset }; +end + +function new(session, stream_callbacks) + local handlers, meta = new_sax_handlers(session, stream_callbacks); + local parser = new_parser(handlers, ns_separator); + local parse = parser.parse; + + return { + reset = function () + parser = new_parser(handlers, ns_separator); + parse = parser.parse; + meta.reset(); + end, + feed = function (self, data) + return parse(parser, data); + end + }; +end + +return _M; |