prosody
e5d00bf4a4d5
util/xmppstream.lua

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util/xmppstream.lua @ 8382:e5d00bf4a4d5

util: Various minor changes to please [luacheck]
author Kim Alvefur <zash@zash.se>
date Fri, 10 Nov 2017 05:42:32 +0100
parent 7240:bf8aa0d1951c
child 8555:4f0f5b49bb03
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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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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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26
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27 local _ENV = nil;
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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
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51 function(_, e, stanza)
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52 error("XML stream error: "..tostring(e)..(stanza and ": "..tostring(stanza) or ""),2);
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53 end;
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54 local cb_handlestanza = stream_callbacks.handlestanza;
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55 cb_handleprogress = cb_handleprogress or dummy_cb;
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56
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57 local stream_ns = stream_callbacks.stream_ns or xmlns_streams;
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58 local stream_tag = stream_callbacks.stream_tag or "stream";
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59 if stream_ns ~= "" then
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60 stream_tag = stream_ns..ns_separator..stream_tag;
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61 end
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62 local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error");
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63
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64 local stream_default_ns = stream_callbacks.default_ns;
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65
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66 local stack = {};
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67 local chardata, stanza = {};
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68 local stanza_size = 0;
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69 local non_streamns_depth = 0;
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70 function xml_handlers:StartElement(tagname, attr)
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71 if stanza and #chardata > 0 then
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72 -- We have some character data in the buffer
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73 t_insert(stanza, t_concat(chardata));
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74 chardata = {};
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75 end
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76 local curr_ns,name = tagname:match(ns_pattern);
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77 if name == "" then
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78 curr_ns, name = "", curr_ns;
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79 end
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80
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81 if curr_ns ~= stream_default_ns or non_streamns_depth > 0 then
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82 attr.xmlns = curr_ns;
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83 non_streamns_depth = non_streamns_depth + 1;
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84 end
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85
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86 for i=1,#attr do
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87 local k = attr[i];
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88 attr[i] = nil;
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89 local xmlk = xml_namespace[k];
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90 if xmlk then
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91 attr[xmlk] = attr[k];
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92 attr[k] = nil;
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93 end
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94 end
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95
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96 if not stanza then --if we are not currently inside a stanza
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97 if lxp_supports_bytecount then
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98 stanza_size = self:getcurrentbytecount();
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99 end
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100 if session.notopen then
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101 if tagname == stream_tag then
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102 non_streamns_depth = 0;
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103 if cb_streamopened then
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104 if lxp_supports_bytecount then
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105 cb_handleprogress(stanza_size);
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106 stanza_size = 0;
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107 end
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108 cb_streamopened(session, attr);
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109 end
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110 else
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111 -- Garbage before stream?
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112 cb_error(session, "no-stream", tagname);
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113 end
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114 return;
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115 end
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116 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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117 cb_error(session, "invalid-top-level-element");
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118 end
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119
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120 stanza = setmetatable({ name = name, attr = attr, tags = {} }, stanza_mt);
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121 else -- we are inside a stanza, so add a tag
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Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
122 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
123 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
124 end
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
125 t_insert(stack, stanza);
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
126 local oldstanza = stanza;
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
127 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
128 t_insert(oldstanza, stanza);
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
129 t_insert(oldstanza.tags, stanza);
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
130 end
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
131 end
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
132 if lxp_supports_xmldecl then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
133 function xml_handlers:XmlDecl(version, encoding, standalone)
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
134 session.xml_version = version;
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
135 session.xml_encoding = encoding;
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
136 session.xml_standalone = standalone;
6042
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 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
139 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
140 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
141 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
142 function xml_handlers:StartCdataSection()
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
143 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
144 if stanza then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
145 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
146 else
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
147 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
148 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
149 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
150 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
151 function xml_handlers:EndCdataSection()
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
152 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
153 if stanza then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
154 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
155 else
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
156 cb_handleprogress(self:getcurrentbytecount());
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
157 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
158 end
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 function xml_handlers:CharacterData(data)
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
161 if stanza then
6042
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Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
162 if lxp_supports_bytecount then
6052
ce3244c084f9 util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents: 6042
diff changeset
163 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
164 end
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
165 t_insert(chardata, data);
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
166 elseif lxp_supports_bytecount then
6052
ce3244c084f9 util.xmppstream: Disable LuaExpat's buffering (if possible)
Matthew Wild <mwild1@gmail.com>
parents: 6042
diff changeset
167 cb_handleprogress(self:getcurrentbytecount());
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
168 end
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
169 end
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
170 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
171 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
172 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
173 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
174 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
175 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
176 end
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
177 if stanza then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
178 if #chardata > 0 then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
179 -- 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
180 t_insert(stanza, t_concat(chardata));
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
181 chardata = {};
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
182 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
183 -- Complete stanza
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
184 if #stack == 0 then
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
185 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
186 cb_handleprogress(stanza_size);
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
187 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
188 stanza_size = 0;
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
189 if tagname ~= stream_error_tag then
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
190 cb_handlestanza(session, stanza);
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
191 else
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
192 cb_error(session, "stream-error", stanza);
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
193 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
194 stanza = nil;
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
195 else
3987
8fbf57722368 util.xmppstream: Optimized stanza building by bypassing the stanza API.
Waqas Hussain <waqas20@gmail.com>
parents: 3927
diff changeset
196 stanza = t_remove(stack);
2493
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
197 end
ec09d16a51e1 xmlhandlers: Rearranged a little code.
Waqas Hussain <waqas20@gmail.com>
parents: 2492
diff changeset
198 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
199 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
200 cb_streamclosed(session);
1
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
201 end
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
202 end
2492
b5e2d1919ec3 xmlhandlers: Fixed indentation and added some semicolons.
Waqas Hussain <waqas20@gmail.com>
parents: 2468
diff changeset
203 end
4277
683523db4fe8 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 2925 4276
diff changeset
204
4288
8fde6b6b4919 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 4281 4287
diff changeset
205 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
206 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
207 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
208 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
209 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
210 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
211
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
212 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
213 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
214 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
215 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
216 xml_handlers.ProcessingInstruction = restricted_handler;
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
217
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
218 local function reset()
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
219 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
220 stack = {};
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
221 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
222
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
223 local function set_session(stream, new_session) -- luacheck: ignore 212/stream
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
224 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
225 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5311
diff changeset
226
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
227 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
228 end
b8787e859fd2 Switched to new connection framework, courtesy of the luadch project
matthew
parents:
diff changeset
229
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
230 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
231 -- 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
232 local n_outstanding_bytes = 0;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
233 local handle_progress;
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
234 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
235 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
236 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
237 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
238 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
239 elseif stanza_size_limit then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
240 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
241 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
242
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
243 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
244 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
245 local parse = parser.parse;
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
246
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
247 function session.open_stream(session, from, to) -- luacheck: ignore 432/session
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
248 local send = session.sends2s or session.send;
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parents: 6054
diff changeset
249
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
250 local attr = {
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parents: 6054
diff changeset
251 ["xmlns:stream"] = "http://etherx.jabber.org/streams",
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
252 ["xml:lang"] = "en",
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
253 xmlns = stream_callbacks.default_ns,
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
254 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
255 id = session.streamid,
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
256 from = from or session.host, to = to,
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Kim Alvefur <zash@zash.se>
parents: 6054
diff changeset
257 };
6084
3c02a9ed399e util.xmppstream: Check for callback that may add stream header attributes
Kim Alvefur <zash@zash.se>
parents: 6063
diff changeset
258 if session.stream_attrs then
3c02a9ed399e util.xmppstream: Check for callback that may add stream header attributes
Kim Alvefur <zash@zash.se>
parents: 6063
diff changeset
259 session:stream_attrs(from, to, attr)
3c02a9ed399e util.xmppstream: Check for callback that may add stream header attributes
Kim Alvefur <zash@zash.se>
parents: 6063
diff changeset
260 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
261 send("<?xml version='1.0'?>");
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
262 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
263 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
264 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
265
3032
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
266 return {
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
267 reset = function ()
6053
2f93a04564b2 util.xmppstream: Also disable CharacterData merging after stream restarts
Matthew Wild <mwild1@gmail.com>
parents: 6052
diff changeset
268 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
269 parse = parser.parse;
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
270 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
271 meta.reset();
38459cffaf67 util.xmppstream: Stream objects now just have feed/reset methods
Matthew Wild <mwild1@gmail.com>
parents: 2926
diff changeset
272 end,
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7240
diff changeset
273 feed = function (self, data) -- luacheck: ignore 212/self
6042
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
274 if lxp_supports_bytecount then
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
275 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
276 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
277 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
278 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
279 return nil, "stanza-too-large";
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
280 end
1107d66d2ab2 util.xmppstream: Implement stanza size limiting, default limit 10MB
Matthew Wild <mwild1@gmail.com>
parents: 5311
diff changeset
281 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
282 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
283 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
284 };
2921
f0ddfd7739ea util.xmppstream: new() now returns a parser object
Matthew Wild <mwild1@gmail.com>
parents: 2920
diff changeset
285 end
f0ddfd7739ea util.xmppstream: new() now returns a parser object
Matthew Wild <mwild1@gmail.com>
parents: 2920
diff changeset
286
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
287 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
288 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
289 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
290 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
291 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
292 };