prosody
fb68aad9dc4d
util/xmppstream.lua

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util/xmppstream.lua @ 7544:fb68aad9dc4d

net.server: Only update configuration if server backend supports changing settings
author Kim Alvefur <zash@zash.se>
date Wed, 10 Aug 2016 16:50:13 +0200
parent 7240:bf8aa0d1951c
child 8382:e5d00bf4a4d5
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local lxp = require "lxp";
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10 local st = require "util.stanza";
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11 local stanza_mt = st.stanza_mt;
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13 local error = error;
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14 local tostring = tostring;
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15 local t_insert = table.insert;
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16 local t_concat = table.concat;
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17 local t_remove = table.remove;
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18 local setmetatable = setmetatable;
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19
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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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22 local lxp_supports_xmldecl = pcall(lxp.new, { XmlDecl = false });
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23 local lxp_supports_bytecount = not not lxp.new({}).getcurrentbytecount;
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24
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25 local default_stanza_size_limit = 1024*1024*10; -- 10MB
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27 local _ENV = nil;
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28
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29 local new_parser = lxp.new;
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30
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31 local xml_namespace = {
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32 ["http://www.w3.org/XML/1998/namespace\1lang"] = "xml:lang";
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33 ["http://www.w3.org/XML/1998/namespace\1space"] = "xml:space";
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34 ["http://www.w3.org/XML/1998/namespace\1base"] = "xml:base";
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35 ["http://www.w3.org/XML/1998/namespace\1id"] = "xml:id";
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36 };
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38 local xmlns_streams = "http://etherx.jabber.org/streams";
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39
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40 local ns_separator = "\1";
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41 local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$";
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42
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43 local function dummy_cb() end
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44
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45 local function new_sax_handlers(session, stream_callbacks, cb_handleprogress)
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46 local xml_handlers = {};
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47
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48 local cb_streamopened = stream_callbacks.streamopened;
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49 local cb_streamclosed = stream_callbacks.streamclosed;
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50 local cb_error = stream_callbacks.error or function(session, e, stanza) error("XML stream error: "..tostring(e)..(stanza and ": "..tostring(stanza) or ""),2); end;
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51 local cb_handlestanza = stream_callbacks.handlestanza;
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52 cb_handleprogress = cb_handleprogress or dummy_cb;
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53
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54 local stream_ns = stream_callbacks.stream_ns or xmlns_streams;
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55 local stream_tag = stream_callbacks.stream_tag or "stream";
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56 if stream_ns ~= "" then
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57 stream_tag = stream_ns..ns_separator..stream_tag;
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58 end
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59 local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error");
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60
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61 local stream_default_ns = stream_callbacks.default_ns;
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62
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63 local stack = {};
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64 local chardata, stanza = {};
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65 local stanza_size = 0;
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66 local non_streamns_depth = 0;
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67 function xml_handlers:StartElement(tagname, attr)
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68 if stanza and #chardata > 0 then
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69 -- We have some character data in the buffer
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70 t_insert(stanza, t_concat(chardata));
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71 chardata = {};
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72 end
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73 local curr_ns,name = tagname:match(ns_pattern);
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74 if name == "" then
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75 curr_ns, name = "", curr_ns;
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76 end
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77
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78 if curr_ns ~= stream_default_ns or non_streamns_depth > 0 then
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79 attr.xmlns = curr_ns;
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80 non_streamns_depth = non_streamns_depth + 1;
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81 end
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82
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83 for i=1,#attr do
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84 local k = attr[i];
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85 attr[i] = nil;
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86 local xmlk = xml_namespace[k];
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87 if xmlk then
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88 attr[xmlk] = attr[k];
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89 attr[k] = nil;
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90 end
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91 end
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92
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93 if not stanza then --if we are not currently inside a stanza
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94 if lxp_supports_bytecount then
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95 stanza_size = self:getcurrentbytecount();
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96 end
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97 if session.notopen then
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98 if tagname == stream_tag then
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99 non_streamns_depth = 0;
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100 if cb_streamopened then
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101 if lxp_supports_bytecount then
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102 cb_handleprogress(stanza_size);
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103 stanza_size = 0;
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104 end
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105 cb_streamopened(session, attr);
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106 end
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107 else
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108 -- Garbage before stream?
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109 cb_error(session, "no-stream", tagname);
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110 end
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111 return;
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112 end
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113 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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114 cb_error(session, "invalid-top-level-element");
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115 end
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116
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117 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt);
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118 else -- we are inside a stanza, so add a tag
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119 if lxp_supports_bytecount then
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120 stanza_size = stanza_size + self:getcurrentbytecount();
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Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
121 end
3987
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Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
122 t_insert(stack, stanza);
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
123 local oldstanza = stanza;
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);
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
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parents: 3927
diff changeset
125 t_insert(oldstanza, stanza);
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
126 t_insert(oldstanza.tags, stanza);
2492
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parents: 2468
diff changeset
127 end
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
128 end
6042
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diff changeset
129 if lxp_supports_xmldecl then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
130 function xml_handlers:XmlDecl(version, encoding, standalone)
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
131 if lxp_supports_bytecount then
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parents: 5311
diff changeset
132 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
133 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
134 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
135 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
136 function xml_handlers:StartCdataSection()
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
137 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
138 if stanza then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
139 stanza_size = stanza_size + self:getcurrentbytecount();
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
140 else
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
141 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
142 end
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 function xml_handlers:EndCdataSection()
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
146 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
147 if stanza then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
148 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
149 else
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
150 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
151 end
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
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
154 function xml_handlers:CharacterData(data)
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
155 if stanza then
6042
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Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
156 if lxp_supports_bytecount then
6052
ce3244c084f9 util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents: 6042
diff changeset
157 stanza_size = stanza_size + self:getcurrentbytecount();
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
158 end
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
159 t_insert(chardata, data);
6042
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parents: 5311
diff changeset
160 elseif lxp_supports_bytecount then
6052
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Matthew Wild <mwild1@gmail.com>
parents: 6042
diff changeset
161 cb_handleprogress(self:getcurrentbytecount());
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
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parents: 2468
diff changeset
162 end
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 function xml_handlers:EndElement(tagname)
6042
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parents: 5311
diff changeset
165 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
166 stanza_size = stanza_size + self:getcurrentbytecount()
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
167 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
168 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
169 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
170 end
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
171 if stanza then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
172 if #chardata > 0 then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
173 -- We have some character data in the buffer
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
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parents: 3927
diff changeset
174 t_insert(stanza, t_concat(chardata));
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
175 chardata = {};
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
176 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
177 -- Complete stanza
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
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parents: 3927
diff changeset
178 if #stack == 0 then
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
179 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
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parents: 5311
diff changeset
180 cb_handleprogress(stanza_size);
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
181 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
182 stanza_size = 0;
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
183 if tagname ~= stream_error_tag then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
184 cb_handlestanza(session, stanza);
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
185 else
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
186 cb_error(session, "stream-error", stanza);
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
187 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
188 stanza = nil;
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
189 else
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
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parents: 3927
diff changeset
190 stanza = t_remove(stack);
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
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parents: 2492
diff changeset
191 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
192 else
4483
1dbd06eedaa4 util.xmppstream: Have faith in the XML parser matching start and end tags.
Waqas Hussain <waqas20@gmail.com>
parents: 4482
diff changeset
193 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
194 cb_streamclosed(session);
1
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
195 end
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
196 end
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
197 end
4277
683523db4fe8 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 2925 4276
diff changeset
198
4288
8fde6b6b4919 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 4281 4287
diff changeset
199 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
200 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
201 if not parser.stop or not parser:stop() then
4288
8fde6b6b4919 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 4281 4287
diff changeset
202 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
203 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
204 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
205
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
206 if lxp_supports_doctype then
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 xml_handlers.StartDoctypeDecl = restricted_handler;
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
208 end
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
209 xml_handlers.Comment = restricted_handler;
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
210 xml_handlers.ProcessingInstruction = restricted_handler;
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
211
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
212 local function reset()
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
213 stanza, chardata, stanza_size = nil, {}, 0;
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
214 stack = {};
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
215 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
216
3424
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
217 local function set_session(stream, new_session)
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
218 session = new_session;
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
219 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
220
3424
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
221 return xml_handlers, { reset = reset, set_session = set_session };
1
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
222 end
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
223
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
224 local function new(session, stream_callbacks, stanza_size_limit)
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
225 -- Used to track parser progress (e.g. to enforce size limits)
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
226 local n_outstanding_bytes = 0;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
227 local handle_progress;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
228 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
229 function handle_progress(n_parsed_bytes)
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
230 n_outstanding_bytes = n_outstanding_bytes - n_parsed_bytes;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
231 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
232 stanza_size_limit = stanza_size_limit or default_stanza_size_limit;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
233 elseif stanza_size_limit then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
234 error("Stanza size limits are not supported on this version of LuaExpat")
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
235 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
236
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
237 local handlers, meta = new_sax_handlers(session, stream_callbacks, handle_progress);
6052
ce3244c084f9 util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents: 6042
diff changeset
238 local parser = new_parser(handlers, ns_separator, false);
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
239 local parse = parser.parse;
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
240
6063
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
241 function session.open_stream(session, from, to)
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
242 local send = session.sends2s or session.send;
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
243
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
244 local attr = {
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parents: 6054
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245 ["xmlns:stream"] = "http://etherx.jabber.org/streams",
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parents: 6054
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246 ["xml:lang"] = "en",
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parents: 6054
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247 xmlns = stream_callbacks.default_ns,
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
248 version = session.version and (session.version > 0 and "1.0" or nil),
6355
c2d144d3f8dd util.xmppstream: Don't include empty stream ID in stream header (got here from mod_c2s)
Kim Alvefur <zash@zash.se>
parents: 6084
diff changeset
249 id = session.streamid,
6063
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parents: 6054
diff changeset
250 from = from or session.host, to = to,
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parents: 6054
diff changeset
251 };
6084
3c02a9ed399e util.xmppstream: Check for callback that may add stream header attributes
Kim Alvefur <zash@zash.se>
parents: 6063
diff changeset
252 if session.stream_attrs then
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Kim Alvefur <zash@zash.se>
parents: 6063
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253 session:stream_attrs(from, to, attr)
3c02a9ed399e util.xmppstream: Check for callback that may add stream header attributes
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parents: 6063
diff changeset
254 end
6063
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
255 send("<?xml version='1.0'?>");
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
256 send(st.stanza("stream:stream", attr):top_tag());
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
257 return true;
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
258 end
e626ee2fe106 mod_c2s, mod_s2s, mod_component, util.xmppstream: Move all session:open_stream() functions to util.xmppstream
Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
259
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
260 return {
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
261 reset = function ()
6053
2f93a04564b2 util.xmppstream: Also disable CharacterData merging after stream restarts
Matthew Wild <mwild1@gmail.com>
parents: 6052
diff changeset
262 parser = new_parser(handlers, ns_separator, false);
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
263 parse = parser.parse;
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
264 n_outstanding_bytes = 0;
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
265 meta.reset();
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
266 end,
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
267 feed = function (self, data)
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
268 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
269 n_outstanding_bytes = n_outstanding_bytes + #data;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
270 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
271 local ok, err = parse(parser, data);
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
272 if lxp_supports_bytecount and n_outstanding_bytes > stanza_size_limit then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
273 return nil, "stanza-too-large";
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
274 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
275 return ok, err;
3424
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
276 end,
9e0df614e5d0 util.xmppstream: Add set_session() method to change the session that a stream is associated with
Matthew Wild <mwild1@gmail.com>
parents: 3032
diff changeset
277 set_session = meta.set_session;
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
278 };
2921
f0ddfd7739ea util.xmppstream: new() now returns a parser object
Matthew Wild <mwild1@gmail.com>
parents: 2920
diff changeset
279 end
f0ddfd7739ea util.xmppstream: new() now returns a parser object
Matthew Wild <mwild1@gmail.com>
parents: 2920
diff changeset
280
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
281 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
282 ns_separator = ns_separator;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
283 ns_pattern = ns_pattern;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
284 new_sax_handlers = new_sax_handlers;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
285 new = new;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6367
diff changeset
286 };