40 _M.ns_separator = ns_separator; |
40 _M.ns_separator = ns_separator; |
41 _M.ns_pattern = ns_pattern; |
41 _M.ns_pattern = ns_pattern; |
42 |
42 |
43 function new_sax_handlers(session, stream_callbacks) |
43 function new_sax_handlers(session, stream_callbacks) |
44 local xml_handlers = {}; |
44 local xml_handlers = {}; |
45 |
45 |
46 local cb_streamopened = stream_callbacks.streamopened; |
46 local cb_streamopened = stream_callbacks.streamopened; |
47 local cb_streamclosed = stream_callbacks.streamclosed; |
47 local cb_streamclosed = stream_callbacks.streamclosed; |
48 local cb_error = stream_callbacks.error or function(session, e, stanza) error("XML stream error: "..tostring(e)..(stanza and ": "..tostring(stanza) or ""),2); end; |
48 local cb_error = stream_callbacks.error or function(session, e, stanza) error("XML stream error: "..tostring(e)..(stanza and ": "..tostring(stanza) or ""),2); end; |
49 local cb_handlestanza = stream_callbacks.handlestanza; |
49 local cb_handlestanza = stream_callbacks.handlestanza; |
50 |
50 |
51 local stream_ns = stream_callbacks.stream_ns or xmlns_streams; |
51 local stream_ns = stream_callbacks.stream_ns or xmlns_streams; |
52 local stream_tag = stream_callbacks.stream_tag or "stream"; |
52 local stream_tag = stream_callbacks.stream_tag or "stream"; |
53 if stream_ns ~= "" then |
53 if stream_ns ~= "" then |
54 stream_tag = stream_ns..ns_separator..stream_tag; |
54 stream_tag = stream_ns..ns_separator..stream_tag; |
55 end |
55 end |
56 local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error"); |
56 local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error"); |
57 |
57 |
58 local stream_default_ns = stream_callbacks.default_ns; |
58 local stream_default_ns = stream_callbacks.default_ns; |
59 |
59 |
60 local stack = {}; |
60 local stack = {}; |
61 local chardata, stanza = {}; |
61 local chardata, stanza = {}; |
62 local non_streamns_depth = 0; |
62 local non_streamns_depth = 0; |
63 function xml_handlers:StartElement(tagname, attr) |
63 function xml_handlers:StartElement(tagname, attr) |
64 if stanza and #chardata > 0 then |
64 if stanza and #chardata > 0 then |
73 |
73 |
74 if curr_ns ~= stream_default_ns or non_streamns_depth > 0 then |
74 if curr_ns ~= stream_default_ns or non_streamns_depth > 0 then |
75 attr.xmlns = curr_ns; |
75 attr.xmlns = curr_ns; |
76 non_streamns_depth = non_streamns_depth + 1; |
76 non_streamns_depth = non_streamns_depth + 1; |
77 end |
77 end |
78 |
78 |
79 for i=1,#attr do |
79 for i=1,#attr do |
80 local k = attr[i]; |
80 local k = attr[i]; |
81 attr[i] = nil; |
81 attr[i] = nil; |
82 local xmlk = xml_namespace[k]; |
82 local xmlk = xml_namespace[k]; |
83 if xmlk then |
83 if xmlk then |
84 attr[xmlk] = attr[k]; |
84 attr[xmlk] = attr[k]; |
85 attr[k] = nil; |
85 attr[k] = nil; |
86 end |
86 end |
87 end |
87 end |
88 |
88 |
89 if not stanza then --if we are not currently inside a stanza |
89 if not stanza then --if we are not currently inside a stanza |
90 if session.notopen then |
90 if session.notopen then |
91 if tagname == stream_tag then |
91 if tagname == stream_tag then |
92 non_streamns_depth = 0; |
92 non_streamns_depth = 0; |
93 if cb_streamopened then |
93 if cb_streamopened then |
100 return; |
100 return; |
101 end |
101 end |
102 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then |
102 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then |
103 cb_error(session, "invalid-top-level-element"); |
103 cb_error(session, "invalid-top-level-element"); |
104 end |
104 end |
105 |
105 |
106 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
106 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
107 else -- we are inside a stanza, so add a tag |
107 else -- we are inside a stanza, so add a tag |
108 t_insert(stack, stanza); |
108 t_insert(stack, stanza); |
109 local oldstanza = stanza; |
109 local oldstanza = stanza; |
110 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
110 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
149 cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1."); |
149 cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1."); |
150 if not parser.stop or not parser:stop() then |
150 if not parser.stop or not parser:stop() then |
151 error("Failed to abort parsing"); |
151 error("Failed to abort parsing"); |
152 end |
152 end |
153 end |
153 end |
154 |
154 |
155 if lxp_supports_doctype then |
155 if lxp_supports_doctype then |
156 xml_handlers.StartDoctypeDecl = restricted_handler; |
156 xml_handlers.StartDoctypeDecl = restricted_handler; |
157 end |
157 end |
158 xml_handlers.Comment = restricted_handler; |
158 xml_handlers.Comment = restricted_handler; |
159 xml_handlers.ProcessingInstruction = restricted_handler; |
159 xml_handlers.ProcessingInstruction = restricted_handler; |
160 |
160 |
161 local function reset() |
161 local function reset() |
162 stanza, chardata = nil, {}; |
162 stanza, chardata = nil, {}; |
163 stack = {}; |
163 stack = {}; |
164 end |
164 end |
165 |
165 |
166 local function set_session(stream, new_session) |
166 local function set_session(stream, new_session) |
167 session = new_session; |
167 session = new_session; |
168 end |
168 end |
169 |
169 |
170 return xml_handlers, { reset = reset, set_session = set_session }; |
170 return xml_handlers, { reset = reset, set_session = set_session }; |
171 end |
171 end |
172 |
172 |
173 function new(session, stream_callbacks) |
173 function new(session, stream_callbacks) |
174 local handlers, meta = new_sax_handlers(session, stream_callbacks); |
174 local handlers, meta = new_sax_handlers(session, stream_callbacks); |