author | Kim Alvefur <zash@zash.se> |
Fri, 01 Mar 2024 19:22:49 +0100 | |
changeset 13455 | 4a9a69659727 |
parent 12979 | d10957394a3c |
permissions | -rw-r--r-- |
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-- Prosody IM |
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-- Copyright (C) 2008-2010 Matthew Wild |
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-- Copyright (C) 2008-2010 Waqas Hussain |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
6 |
-- COPYING file in the source package for more information. |
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-- |
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local lxp = require "lxp"; |
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local st = require "prosody.util.stanza"; |
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local stanza_mt = st.stanza_mt; |
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13 |
local error = error; |
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local tostring = tostring; |
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15 |
local t_insert = table.insert; |
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local t_concat = table.concat; |
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local t_remove = table.remove; |
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18 |
local setmetatable = setmetatable; |
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|
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20 |
-- COMPAT: w/LuaExpat 1.1.0 |
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21 |
local lxp_supports_doctype = pcall(lxp.new, { StartDoctypeDecl = false }); |
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local lxp_supports_xmldecl = pcall(lxp.new, { XmlDecl = false }); |
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local lxp_supports_bytecount = not not lxp.new({}).getcurrentbytecount; |
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local default_stanza_size_limit = 1024*1024*1; -- 1MB |
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local _ENV = nil; |
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-- luacheck: std none |
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local new_parser = lxp.new; |
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local xml_namespace = { |
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["http://www.w3.org/XML/1998/namespace\1lang"] = "xml:lang"; |
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["http://www.w3.org/XML/1998/namespace\1space"] = "xml:space"; |
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["http://www.w3.org/XML/1998/namespace\1base"] = "xml:base"; |
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["http://www.w3.org/XML/1998/namespace\1id"] = "xml:id"; |
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}; |
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38 |
|
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local xmlns_streams = "http://etherx.jabber.org/streams"; |
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local ns_separator = "\1"; |
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local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$"; |
148 | 43 |
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44 |
local function dummy_cb() end |
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45 |
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46 |
local function new_sax_handlers(session, stream_callbacks, cb_handleprogress) |
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47 |
local xml_handlers = {}; |
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49 |
local cb_streamopened = stream_callbacks.streamopened; |
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50 |
local cb_streamclosed = stream_callbacks.streamclosed; |
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51 |
local cb_error = stream_callbacks.error or |
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52 |
function(_, e, stanza) |
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53 |
error("XML stream error: "..tostring(e)..(stanza and ": "..tostring(stanza) or ""),2); |
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54 |
end; |
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55 |
local cb_handlestanza = stream_callbacks.handlestanza; |
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56 |
cb_handleprogress = cb_handleprogress or dummy_cb; |
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|
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58 |
local stream_ns = stream_callbacks.stream_ns or xmlns_streams; |
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59 |
local stream_tag = stream_callbacks.stream_tag or "stream"; |
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60 |
if stream_ns ~= "" then |
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61 |
stream_tag = stream_ns..ns_separator..stream_tag; |
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62 |
end |
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63 |
local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error"); |
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65 |
local stream_default_ns = stream_callbacks.default_ns; |
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66 |
|
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67 |
local stream_lang = "en"; |
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68 |
|
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69 |
local stack = {}; |
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70 |
local chardata, stanza = {}; |
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71 |
local stanza_size = 0; |
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72 |
local non_streamns_depth = 0; |
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73 |
function xml_handlers:StartElement(tagname, attr) |
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74 |
if stanza and #chardata > 0 then |
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75 |
-- We have some character data in the buffer |
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76 |
t_insert(stanza, t_concat(chardata)); |
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77 |
chardata = {}; |
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|
78 |
end |
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79 |
local curr_ns,name = tagname:match(ns_pattern); |
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80 |
if name == "" then |
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81 |
curr_ns, name = "", curr_ns; |
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82 |
end |
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83 |
|
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84 |
if curr_ns ~= stream_default_ns or non_streamns_depth > 0 then |
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85 |
attr.xmlns = curr_ns; |
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86 |
non_streamns_depth = non_streamns_depth + 1; |
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|
87 |
end |
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88 |
|
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89 |
for i=1,#attr do |
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90 |
local k = attr[i]; |
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|
91 |
attr[i] = nil; |
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92 |
local xmlk = xml_namespace[k]; |
0da4e0f0f0ef
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|
93 |
if xmlk then |
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94 |
attr[xmlk] = attr[k]; |
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95 |
attr[k] = nil; |
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|
96 |
end |
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|
97 |
end |
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98 |
|
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|
99 |
if not stanza then --if we are not currently inside a stanza |
6042
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parents:
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|
100 |
if lxp_supports_bytecount then |
1107d66d2ab2
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parents:
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changeset
|
101 |
stanza_size = self:getcurrentbytecount(); |
1107d66d2ab2
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parents:
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|
102 |
end |
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|
103 |
if session.notopen then |
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|
104 |
if tagname == stream_tag then |
3633
4069c37c54bc
util.xmppstream: Preserve the stream content namespace on descendents of elements which are in another namespace.
Waqas Hussain <waqas20@gmail.com>
parents:
3540
diff
changeset
|
105 |
non_streamns_depth = 0; |
10097
1266a63ba567
util.xmppstream: Inherit xml:lang from stream to stanzas (fixes #1401)
Kim Alvefur <zash@zash.se>
parents:
9074
diff
changeset
|
106 |
stream_lang = attr["xml:lang"] or stream_lang; |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
107 |
if cb_streamopened then |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
108 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
109 |
cb_handleprogress(stanza_size); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
110 |
stanza_size = 0; |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
111 |
end |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
112 |
cb_streamopened(session, attr); |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
113 |
end |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
114 |
else |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
115 |
-- Garbage before stream? |
6363
ec446efc15e1
util.xmppstream: When error is 'no-stream', pass the received tagname to the error handler
Matthew Wild <mwild1@gmail.com>
parents:
6053
diff
changeset
|
116 |
cb_error(session, "no-stream", tagname); |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
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parents:
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diff
changeset
|
117 |
end |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
118 |
return; |
1
b8787e859fd2
Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff
changeset
|
119 |
end |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
120 |
if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
121 |
cb_error(session, "invalid-top-level-element"); |
1051
0327c569eb1a
xmlhandlers: Fix tag pattern again for the default namespace
Matthew Wild <mwild1@gmail.com>
parents:
1003
diff
changeset
|
122 |
end |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5311
diff
changeset
|
123 |
|
3987
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
124 |
stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
125 |
else -- we are inside a stanza, so add a tag |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
126 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
127 |
stanza_size = stanza_size + self:getcurrentbytecount(); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
128 |
end |
3987
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
129 |
t_insert(stack, stanza); |
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
130 |
local oldstanza = stanza; |
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
131 |
stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt); |
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
132 |
t_insert(oldstanza, stanza); |
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
133 |
t_insert(oldstanza.tags, stanza); |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
134 |
end |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
135 |
end |
9023
19e51d8f8947
util.xmppstream: Perfom validation of XML declaration parameters
Matthew Wild <mwild1@gmail.com>
parents:
8558
diff
changeset
|
136 |
|
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
137 |
function xml_handlers:StartCdataSection() |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
138 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
139 |
if stanza then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
140 |
stanza_size = stanza_size + self:getcurrentbytecount(); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
141 |
else |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
142 |
cb_handleprogress(self:getcurrentbytecount()); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
143 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
144 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
145 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
146 |
function xml_handlers:EndCdataSection() |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
147 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
148 |
if stanza then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
149 |
stanza_size = stanza_size + self:getcurrentbytecount(); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
150 |
else |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
151 |
cb_handleprogress(self:getcurrentbytecount()); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
152 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
153 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
154 |
end |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
155 |
function xml_handlers:CharacterData(data) |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
156 |
if stanza then |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
157 |
if lxp_supports_bytecount then |
6052
ce3244c084f9
util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents:
6042
diff
changeset
|
158 |
stanza_size = stanza_size + self:getcurrentbytecount(); |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
159 |
end |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
160 |
t_insert(chardata, data); |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
161 |
elseif lxp_supports_bytecount then |
6052
ce3244c084f9
util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents:
6042
diff
changeset
|
162 |
cb_handleprogress(self:getcurrentbytecount()); |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
163 |
end |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
164 |
end |
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
165 |
function xml_handlers:EndElement(tagname) |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
166 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
167 |
stanza_size = stanza_size + self:getcurrentbytecount() |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
168 |
end |
3633
4069c37c54bc
util.xmppstream: Preserve the stream content namespace on descendents of elements which are in another namespace.
Waqas Hussain <waqas20@gmail.com>
parents:
3540
diff
changeset
|
169 |
if non_streamns_depth > 0 then |
4069c37c54bc
util.xmppstream: Preserve the stream content namespace on descendents of elements which are in another namespace.
Waqas Hussain <waqas20@gmail.com>
parents:
3540
diff
changeset
|
170 |
non_streamns_depth = non_streamns_depth - 1; |
4069c37c54bc
util.xmppstream: Preserve the stream content namespace on descendents of elements which are in another namespace.
Waqas Hussain <waqas20@gmail.com>
parents:
3540
diff
changeset
|
171 |
end |
2493
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
172 |
if stanza then |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
173 |
if #chardata > 0 then |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
174 |
-- We have some character data in the buffer |
3987
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
175 |
t_insert(stanza, t_concat(chardata)); |
2493
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
176 |
chardata = {}; |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
177 |
end |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
178 |
-- Complete stanza |
3987
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
179 |
if #stack == 0 then |
6042
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
180 |
if lxp_supports_bytecount then |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
181 |
cb_handleprogress(stanza_size); |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
182 |
end |
1107d66d2ab2
util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents:
5311
diff
changeset
|
183 |
stanza_size = 0; |
10097
1266a63ba567
util.xmppstream: Inherit xml:lang from stream to stanzas (fixes #1401)
Kim Alvefur <zash@zash.se>
parents:
9074
diff
changeset
|
184 |
if stanza.attr["xml:lang"] == nil then |
1266a63ba567
util.xmppstream: Inherit xml:lang from stream to stanzas (fixes #1401)
Kim Alvefur <zash@zash.se>
parents:
9074
diff
changeset
|
185 |
stanza.attr["xml:lang"] = stream_lang; |
1266a63ba567
util.xmppstream: Inherit xml:lang from stream to stanzas (fixes #1401)
Kim Alvefur <zash@zash.se>
parents:
9074
diff
changeset
|
186 |
end |
2493
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
187 |
if tagname ~= stream_error_tag then |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
188 |
cb_handlestanza(session, stanza); |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
189 |
else |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
190 |
cb_error(session, "stream-error", stanza); |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
191 |
end |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
192 |
stanza = nil; |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
193 |
else |
3987
8fbf57722368
util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents:
3927
diff
changeset
|
194 |
stanza = t_remove(stack); |
2493
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
195 |
end |
ec09d16a51e1
xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents:
2492
diff
changeset
|
196 |
else |
11550
b21d8c286973
util.xmppstream: Mark bytes for stream closure as handled
Matthew Wild <mwild1@gmail.com>
parents:
11547
diff
changeset
|
197 |
if lxp_supports_bytecount then |
b21d8c286973
util.xmppstream: Mark bytes for stream closure as handled
Matthew Wild <mwild1@gmail.com>
parents:
11547
diff
changeset
|
198 |
cb_handleprogress(stanza_size); |
b21d8c286973
util.xmppstream: Mark bytes for stream closure as handled
Matthew Wild <mwild1@gmail.com>
parents:
11547
diff
changeset
|
199 |
end |
4483
1dbd06eedaa4
util.xmppstream: Have faith in the XML parser matching start and end tags.
Waqas Hussain <waqas20@gmail.com>
parents:
4482
diff
changeset
|
200 |
if cb_streamclosed then |
1dbd06eedaa4
util.xmppstream: Have faith in the XML parser matching start and end tags.
Waqas Hussain <waqas20@gmail.com>
parents:
4482
diff
changeset
|
201 |
cb_streamclosed(session); |
1
b8787e859fd2
Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff
changeset
|
202 |
end |
b8787e859fd2
Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff
changeset
|
203 |
end |
2492
b5e2d1919ec3
xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents:
2468
diff
changeset
|
204 |
end |
4277 | 205 |
|
4288 | 206 |
local function restricted_handler(parser) |
4275
5305a665bdd4
util.xmppstream: Reject XML comments, processing instructions and (if supported by LuaExpat) DTDs. If not supported, log a warning.
Matthew Wild <mwild1@gmail.com>
parents:
3927
diff
changeset
|
207 |
cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1."); |
4305
e3ffa91517cc
util.xmppstream: Check to make sure parser.stop is present before calling it.
Waqas Hussain <waqas20@gmail.com>
parents:
4289
diff
changeset
|
208 |
if not parser.stop or not parser:stop() then |
4288 | 209 |
error("Failed to abort parsing"); |
4276
a37522bf6b1b
xmlhandlers: Reject XML comments, processing instructions and (if supported by LuaExpat) DTDs. If not supported, log a warning. [Backport of 7cc426988bcc in trunk]
Matthew Wild <mwild1@gmail.com>
parents:
2923
diff
changeset
|
210 |
end |
4275
5305a665bdd4
util.xmppstream: Reject XML comments, processing instructions and (if supported by LuaExpat) DTDs. If not supported, log a warning.
Matthew Wild <mwild1@gmail.com>
parents:
3927
diff
changeset
|
211 |
end |
5776
bd0ff8ae98a8
Remove all trailing whitespace
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|
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if lxp_supports_xmldecl then |
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function xml_handlers:XmlDecl(version, encoding, standalone) |
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if lxp_supports_bytecount then |
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cb_handleprogress(self:getcurrentbytecount()); |
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end |
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if (encoding and encoding:lower() ~= "utf-8") |
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or (standalone == "no") |
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or (version and version ~= "1.0") then |
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return restricted_handler(self); |
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end |
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223 |
end |
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end |
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if lxp_supports_doctype then |
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xml_handlers.StartDoctypeDecl = restricted_handler; |
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end |
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xml_handlers.Comment = restricted_handler; |
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xml_handlers.ProcessingInstruction = restricted_handler; |
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|
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local function reset() |
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stanza, chardata, stanza_size = nil, {}, 0; |
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stack = {}; |
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end |
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|
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local function set_session(stream, new_session) -- luacheck: ignore 212/stream |
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session = new_session; |
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238 |
end |
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|
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return xml_handlers, { reset = reset, set_session = set_session }; |
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241 |
end |
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|
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243 |
local function new(session, stream_callbacks, stanza_size_limit) |
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-- Used to track parser progress (e.g. to enforce size limits) |
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245 |
local n_outstanding_bytes = 0; |
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|
246 |
local handle_progress; |
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247 |
if lxp_supports_bytecount then |
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248 |
function handle_progress(n_parsed_bytes) |
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249 |
n_outstanding_bytes = n_outstanding_bytes - n_parsed_bytes; |
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|
250 |
end |
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|
251 |
stanza_size_limit = stanza_size_limit or default_stanza_size_limit; |
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252 |
elseif stanza_size_limit then |
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253 |
error("Stanza size limits are not supported on this version of LuaExpat") |
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|
254 |
end |
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|
255 |
|
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|
256 |
local handlers, meta = new_sax_handlers(session, stream_callbacks, handle_progress); |
6052
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|
257 |
local parser = new_parser(handlers, ns_separator, false); |
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|
258 |
local parse = parser.parse; |
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|
259 |
|
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|
260 |
function session.open_stream(session, from, to) -- luacheck: ignore 432/session |
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|
261 |
local send = session.sends2s or session.send; |
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|
262 |
|
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|
263 |
local attr = { |
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|
264 |
["xmlns:stream"] = "http://etherx.jabber.org/streams", |
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|
265 |
["xml:lang"] = "en", |
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|
266 |
xmlns = stream_callbacks.default_ns, |
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|
267 |
version = session.version and (session.version > 0 and "1.0" or nil), |
11362
ebbf8dca33d2
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|
268 |
id = session.streamid or "", |
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|
269 |
from = from or session.host, to = to, |
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|
270 |
}; |
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|
271 |
if session.stream_attrs then |
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|
272 |
session:stream_attrs(from, to, attr) |
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|
273 |
end |
11520
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util.xmppstream: Send <?xml?> declaration in same call as stream open
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|
274 |
send("<?xml version='1.0'?>"..st.stanza("stream:stream", attr):top_tag()); |
6063
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|
275 |
return true; |
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|
276 |
end |
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|
277 |
|
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|
278 |
return { |
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|
279 |
reset = function () |
6053
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|
280 |
parser = new_parser(handlers, ns_separator, false); |
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|
281 |
parse = parser.parse; |
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|
282 |
n_outstanding_bytes = 0; |
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|
283 |
meta.reset(); |
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|
284 |
end, |
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|
285 |
feed = function (self, data) -- luacheck: ignore 212/self |
6042
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|
286 |
if lxp_supports_bytecount then |
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|
287 |
n_outstanding_bytes = n_outstanding_bytes + #data; |
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|
288 |
end |
9074
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|
289 |
local _parser = parser; |
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|
290 |
local ok, err = parse(_parser, data); |
6042
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|
291 |
if lxp_supports_bytecount and n_outstanding_bytes > stanza_size_limit then |
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|
292 |
return nil, "stanza-too-large"; |
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|
293 |
end |
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|
294 |
if parser ~= _parser then |
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|
295 |
_parser:parse(); |
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|
296 |
_parser:close(); |
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|
297 |
end |
6042
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|
298 |
return ok, err; |
3424
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|
299 |
end, |
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|
300 |
set_session = meta.set_session; |
11551
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|
301 |
set_stanza_size_limit = function (_, new_stanza_size_limit) |
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|
302 |
stanza_size_limit = new_stanza_size_limit; |
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|
303 |
end; |
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|
304 |
}; |
2921
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diff
changeset
|
305 |
end |
f0ddfd7739ea
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changeset
|
306 |
|
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|
307 |
return { |
5de6b93d0190
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changeset
|
308 |
ns_separator = ns_separator; |
5de6b93d0190
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|
309 |
ns_pattern = ns_pattern; |
5de6b93d0190
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|
310 |
new_sax_handlers = new_sax_handlers; |
5de6b93d0190
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|
311 |
new = new; |
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|
312 |
}; |