diff options
Diffstat (limited to 'core/xmlhandlers.lua')
| -rw-r--r-- | core/xmlhandlers.lua | 203 |
1 files changed, 104 insertions, 99 deletions
diff --git a/core/xmlhandlers.lua b/core/xmlhandlers.lua index 6a5cac85..47db75d3 100644 --- a/core/xmlhandlers.lua +++ b/core/xmlhandlers.lua @@ -12,8 +12,6 @@ require "util.stanza" local st = stanza; local tostring = tostring; -local pairs = pairs; -local ipairs = ipairs; local t_insert = table.insert; local t_concat = table.concat; @@ -34,103 +32,92 @@ local error = error; module "xmlhandlers" local ns_prefixes = { - ["http://www.w3.org/XML/1998/namespace"] = "xml"; - } + ["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.."?(.*)$"; function init_xmlhandlers(session, stream_callbacks) - local ns_stack = { "" }; - local curr_tag; - local chardata = {}; - local xml_handlers = {}; - local log = session.log or default_log; - - local cb_streamopened = stream_callbacks.streamopened; - local cb_streamclosed = stream_callbacks.streamclosed; - local cb_error = stream_callbacks.error or function (session, e) error("XML stream error: "..tostring(e)); end; - local cb_handlestanza = stream_callbacks.handlestanza; - - local stream_tag = stream_callbacks.stream_tag; - local stream_default_ns = stream_callbacks.default_ns; - - local stanza - function xml_handlers:StartElement(tagname, attr) - if stanza and #chardata > 0 then - -- We have some character data in the buffer - stanza:text(t_concat(chardata)); - chardata = {}; - end - local curr_ns,name = tagname:match("^([^\1]*)\1?(.*)$"); - if name == "" then - curr_ns, name = "", curr_ns; - end + local chardata = {}; + 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 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("^([^\1]*)\1?(.*)$"); - if nm ~= "" then - ns = ns_prefixes[ns]; - if ns then - attr[ns..":"..nm] = attr[k]; - attr[k] = nil; - end - end - end - - if not stanza then --if we are not currently inside a stanza - if session.notopen then - if tagname == stream_tag then - if cb_streamopened then - cb_streamopened(session, attr); - end - else - -- Garbage before stream? - cb_error(session, "no-stream"); - end - return; - end - if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then - cb_error(session, "invalid-top-level-element"); - end - - stanza = st.stanza(name, attr); - curr_tag = stanza; - else -- we are inside a stanza, so add a tag - attr.xmlns = nil; - if curr_ns ~= stream_default_ns then - attr.xmlns = curr_ns; - end - stanza:tag(name, attr); - end + if curr_ns ~= stream_default_ns then + attr.xmlns = curr_ns; end - function xml_handlers:CharacterData(data) - if stanza then - t_insert(chardata, data); + + -- FIXME !!!!! + for i=1,#attr do + local k = attr[i]; + attr[i] = nil; + local ns, nm = k:match(ns_pattern); + if nm ~= "" then + ns = ns_prefixes[ns]; + if ns then + attr[ns..":"..nm] = attr[k]; + attr[k] = nil; + end end end - function xml_handlers:EndElement(tagname) - local curr_ns,name = tagname:match("^([^\1]*)\1?(.*)$"); - if name == "" then - curr_ns, name = "", curr_ns; - end - if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then + + if not stanza then --if we are not currently inside a stanza + if session.notopen then if tagname == stream_tag then - if cb_streamclosed then - cb_streamclosed(session); + if cb_streamopened then + cb_streamopened(session, attr); end - elseif name == "error" then - cb_error(session, "stream-error", stanza); else - cb_error(session, "parse-error", "unexpected-element-close", name); + -- Garbage before stream? + cb_error(session, "no-stream"); end - stanza, chardata = nil, {}; 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)); @@ -138,24 +125,42 @@ function init_xmlhandlers(session, stream_callbacks) end -- Complete stanza if #stanza.last_add == 0 then - cb_handlestanza(session, stanza); + 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 restricted_handler() + cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1."); + end + + if lxp_supports_doctype then + xml_handlers.StartDoctypeDecl = restricted_handler; + end + xml_handlers.Comment = restricted_handler; + xml_handlers.StartCdataSection = restricted_handler; + xml_handlers.ProcessingInstruction = restricted_handler; - local function restricted_handler() - cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1."); - end - - if lxp_supports_doctype then - xml_handlers.StartDoctypeDecl = restricted_handler; - end - xml_handlers.Comment = restricted_handler; - xml_handlers.StartCdataSection = restricted_handler; - xml_handlers.ProcessingInstruction = restricted_handler; - return xml_handlers; end |