Sun, 31 Jan 2010 19:54:56 +0000
net.adns: Use different flavour of voodoo to make UDP sockets work smoothly with libevent (no packet merging)
2507
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1 | #!/usr/bin/env lua |
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2 | -- Prosody IM |
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3 | -- Copyright (C) 2008-2009 Matthew Wild |
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4 | -- Copyright (C) 2008-2009 Waqas Hussain |
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5 | -- Copyright (C) 2010 Stefan Gehn |
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6 | -- |
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7 | -- This project is MIT/X11 licensed. Please see the |
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8 | -- COPYING file in the source package for more information. |
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9 | -- |
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10 | |
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11 | -- FIXME: XEP-0227 supports XInclude but luaexpat does not |
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12 | -- |
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13 | -- XEP-227 elements and their current level of support: |
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14 | -- Hosts : supported |
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15 | -- Users : supported |
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16 | -- Rosters : supported, needs testing |
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17 | -- Offline Messages : supported, needs testing |
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18 | -- Private XML Storage : supported, needs testing |
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19 | -- vCards : supported, needs testing |
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20 | -- Privacy Lists: UNSUPPORTED |
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21 | -- http://xmpp.org/extensions/xep-0227.html#privacy-lists |
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22 | -- mod_privacy uses dm.load(username, host, "privacy"); and stores stanzas 1:1 |
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23 | -- Incoming Subscription Requests : supported |
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24 | |
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25 | package.path = package.path..";../?.lua"; |
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26 | package.cpath = package.cpath..";../?.so"; -- needed for util.pposix used in datamanager |
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27 | |
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28 | -- ugly workaround for getting datamanager to work outside of prosody :( |
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29 | prosody = { }; |
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30 | prosody.platform = "unknown"; |
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31 | if os.getenv("WINDIR") then |
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32 | prosody.platform = "windows"; |
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33 | elseif package.config:sub(1,1) == "/" then |
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34 | prosody.platform = "posix"; |
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35 | end |
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36 | |
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37 | local lxp = require "lxp"; |
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38 | local st = require "util.stanza"; |
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39 | local init_xmlhandlers = require "core.xmlhandlers"; |
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40 | local dm = require "util.datamanager" |
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41 | dm.set_data_path("data"); |
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42 | |
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43 | local ns_separator = "\1"; |
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44 | local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$"; |
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45 | local ns_xep227 = "http://www.xmpp.org/extensions/xep-0227.html#ns"; |
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46 | |
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47 | ----------------------------------------------------------------------- |
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48 | |
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49 | function store_vcard(username, host, stanza) |
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50 | -- create or update vCard for username@host |
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51 | local ret, err = dm.store(username, host, "vcard", st.preserialize(stanza)); |
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52 | print("["..(err or "success").."] stored vCard: "..username.."@"..host); |
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53 | end |
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54 | |
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55 | function store_password(username, host, password) |
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56 | -- create or update account for username@host |
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57 | local ret, err = dm.store(username, host, "accounts", {password = password}); |
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58 | print("["..(err or "success").."] stored account: "..username.."@"..host.." = "..password); |
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59 | end |
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60 | |
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61 | function store_roster(username, host, roster_items) |
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62 | -- fetch current roster-table for username@host if he already has one |
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63 | local roster = dm.load(username, host, "roster") or {}; |
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64 | -- merge imported roster-items with loaded roster |
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65 | for item_tag in roster_items:childtags() do |
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66 | -- jid for this roster-item |
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67 | local item_jid = item_tag.attr.jid |
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68 | -- validate item stanzas |
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69 | if (item_tag.name == "item") and (item_jid ~= "") then |
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70 | -- prepare roster item |
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71 | -- TODO: is the subscription attribute optional? |
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72 | local item = {subscription = item_tag.attr.subscription, groups = {}}; |
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73 | -- optional: give roster item a real name |
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74 | if item_tag.attr.name then |
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75 | item.name = item_tag.attr.name; |
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76 | end |
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77 | -- optional: iterate over group stanzas inside item stanza |
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78 | for group_tag in item_tag:childtags() do |
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79 | local group_name = group_tag:get_text(); |
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80 | if (group_tag.name == "group") and (group_name ~= "") then |
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81 | item.groups[group_name] = true; |
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82 | else |
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83 | print("[error] invalid group stanza: "..group_tag:pretty_print()); |
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84 | end |
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85 | end |
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86 | -- store item in roster |
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87 | roster[item_jid] = item; |
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88 | print("[success] roster entry: " ..username.."@"..host.." - "..item_jid); |
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89 | else |
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90 | print("[error] invalid roster stanza: " ..item_tag:pretty_print()); |
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91 | end |
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92 | |
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93 | end |
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94 | -- store merged roster-table |
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95 | local ret, err = dm.store(username, host, "roster", roster); |
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96 | print("["..(err or "success").."] stored roster: " ..username.."@"..host); |
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97 | end |
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98 | |
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99 | function store_private(username, host, private_items) |
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100 | local private = dm.load(username, host, "private") or {}; |
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101 | for ch in private_items:childtags() do |
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102 | --print("private :"..ch:pretty_print()); |
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103 | private[ch.name..":"..ch.attr.xmlns] = st.preserialize(ch); |
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104 | print("[success] private item: " ..username.."@"..host.." - "..ch.name); |
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105 | end |
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106 | local ret, err = dm.store(username, host, "private", private); |
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107 | print("["..(err or "success").."] stored private: " ..username.."@"..host); |
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108 | end |
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109 | |
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110 | function store_offline_messages(username, host, offline_messages) |
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111 | -- TODO: maybe use list_load(), append and list_store() instead |
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112 | -- of constantly reopening the file with list_append()? |
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113 | for ch in offline_messages:childtags() do |
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114 | --print("message :"..ch:pretty_print()); |
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115 | local ret, err = dm.list_append(username, host, "offline", st.preserialize(ch)); |
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116 | print("["..(err or "success").."] stored offline message: " ..username.."@"..host.." - "..ch.attr.from); |
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117 | end |
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118 | end |
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119 | |
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120 | |
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121 | function store_subscription_request(username, host, presence_stanza) |
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122 | local from_bare = presence_stanza.attr.from; |
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123 | |
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124 | -- fetch current roster-table for username@host if he already has one |
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125 | local roster = dm.load(username, host, "roster") or {}; |
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126 | |
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127 | local item = roster[from_bare]; |
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128 | if item and (item.subscription == "from" or item.subscription == "both") then |
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129 | return; -- already subscribed, do nothing |
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130 | end |
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131 | |
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132 | -- add to table of pending subscriptions |
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133 | if not roster.pending then roster.pending = {}; end |
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134 | roster.pending[from_bare] = true; |
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135 | |
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136 | -- store updated roster-table |
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137 | local ret, err = dm.store(username, host, "roster", roster); |
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138 | print("["..(err or "success").."] stored subscription request: " ..username.."@"..host.." - "..from_bare); |
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139 | end |
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140 | |
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141 | ----------------------------------------------------------------------- |
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142 | |
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143 | local curr_host = ""; |
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144 | local user_name = ""; |
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145 | |
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146 | |
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147 | local cb = { |
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148 | stream_tag = "user", |
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149 | stream_ns = ns_xep227, |
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150 | }; |
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151 | function cb.streamopened(session, attr) |
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152 | session.notopen = false; |
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153 | user_name = attr.name; |
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154 | store_password(user_name, curr_host, attr.password); |
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155 | end |
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156 | function cb.streamclosed(session) |
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157 | session.notopen = true; |
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158 | user_name = ""; |
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159 | end |
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160 | function cb.handlestanza(session, stanza) |
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161 | --print("Parsed stanza "..stanza.name.." xmlns: "..(stanza.attr.xmlns or "")); |
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162 | if (stanza.name == "vCard") and (stanza.attr.xmlns == "vcard-temp") then |
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163 | store_vcard(user_name, curr_host, stanza); |
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164 | elseif (stanza.name == "query") then |
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165 | if (stanza.attr.xmlns == "jabber:iq:roster") then |
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166 | store_roster(user_name, curr_host, stanza); |
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167 | elseif (stanza.attr.xmlns == "jabber:iq:private") then |
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168 | store_private(user_name, curr_host, stanza); |
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169 | end |
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170 | elseif (stanza.name == "offline-messages") then |
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171 | store_offline_messages(user_name, curr_host, stanza); |
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172 | elseif (stanza.name == "presence") and (stanza.attr.xmlns == "jabber:client") then |
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173 | store_subscription_request(user_name, curr_host, stanza); |
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174 | else |
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175 | print("UNHANDLED stanza "..stanza.name.." xmlns: "..(stanza.attr.xmlns or "")); |
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176 | end |
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177 | end |
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178 | |
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179 | local user_handlers = init_xmlhandlers({ notopen = true, }, cb); |
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180 | |
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181 | ----------------------------------------------------------------------- |
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182 | |
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183 | local lxp_handlers = { |
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184 | --count = 0 |
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185 | }; |
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186 | |
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187 | -- TODO: error handling for invalid opening elements if curr_host is empty |
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188 | function lxp_handlers.StartElement(parser, elementname, attributes) |
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189 | local curr_ns, name = elementname:match(ns_pattern); |
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190 | if name == "" then |
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191 | curr_ns, name = "", curr_ns; |
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192 | end |
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193 | --io.write("+ ", string.rep(" ", count), name, " (", curr_ns, ")", "\n") |
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194 | --count = count + 1; |
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195 | if curr_host ~= "" then |
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196 | -- forward to xmlhandlers |
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197 | user_handlers:StartElement(elementname, attributes); |
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198 | elseif (curr_ns == ns_xep227) and (name == "host") then |
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199 | curr_host = attributes["jid"]; -- start of host element |
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200 | print("Begin parsing host "..curr_host); |
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201 | elseif (curr_ns ~= ns_xep227) or (name ~= "server-data") then |
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202 | io.stderr:write("Unhandled XML element: ", name, "\n"); |
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203 | os.exit(1); |
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204 | end |
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205 | end |
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206 | |
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207 | -- TODO: error handling for invalid closing elements if host is empty |
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208 | function lxp_handlers.EndElement(parser, elementname) |
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209 | local curr_ns, name = elementname:match(ns_pattern); |
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210 | if name == "" then |
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211 | curr_ns, name = "", curr_ns; |
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212 | end |
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213 | --count = count - 1; |
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214 | --io.write("- ", string.rep(" ", count), name, " (", curr_ns, ")", "\n") |
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215 | if curr_host ~= "" then |
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216 | if (curr_ns == ns_xep227) and (name == "host") then |
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217 | print("End parsing host "..curr_host); |
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218 | curr_host = "" -- end of host element |
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219 | else |
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220 | -- forward to xmlhandlers |
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221 | user_handlers:EndElement(elementname); |
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222 | end |
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223 | elseif (curr_ns ~= ns_xep227) or (name ~= "server-data") then |
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224 | io.stderr:write("Unhandled XML element: ", name, "\n"); |
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225 | os.exit(1); |
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226 | end |
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227 | end |
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228 | |
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229 | function lxp_handlers.CharacterData(parser, string) |
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230 | if curr_host ~= "" then |
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231 | -- forward to xmlhandlers |
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232 | user_handlers:CharacterData(string); |
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233 | end |
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234 | end |
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235 | |
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236 | ----------------------------------------------------------------------- |
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237 | |
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238 | local arg = ...; |
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239 | local help = "/? -? ? /h -h /help -help --help"; |
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240 | if not arg or help:find(arg, 1, true) then |
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241 | print([[XEP-227 importer for Prosody |
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242 | |
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243 | Usage: xep227toprosody.lua filename.xml |
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244 | |
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245 | ]]); |
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246 | os.exit(1); |
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247 | end |
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248 | |
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249 | local file = io.open(arg); |
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250 | if not file then |
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251 | io.stderr:write("Could not open file: ", arg, "\n"); |
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252 | os.exit(0); |
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253 | end |
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254 | |
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255 | local parser = lxp.new(lxp_handlers, ns_separator); |
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256 | for l in file:lines() do |
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257 | parser:parse(l); |
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258 | end |
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259 | parser:parse(); |
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260 | parser:close(); |
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261 | file:close(); |