Thu, 11 Feb 2010 19:34:23 +0000
sessionmanager: Fire resource-unbind event after removing session from sessions table
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1 | -- Prosody IM |
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2 | -- Copyright (C) 2008-2009 Matthew Wild |
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3 | -- Copyright (C) 2008-2009 Waqas Hussain |
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4 | -- Copyright (C) 2009 Thilo Cestonaro |
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5 | -- |
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6 | -- This project is MIT/X11 licensed. Please see the |
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7 | -- COPYING file in the source package for more information. |
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8 | -- |
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9 | |
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10 | local prosody = prosody; |
1293 | 11 | local st = require "util.stanza"; |
12 | local datamanager = require "util.datamanager"; | |
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13 | local bare_sessions, full_sessions = bare_sessions, full_sessions; |
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14 | local util_Jid = require "util.jid"; |
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15 | local jid_bare = util_Jid.bare; |
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16 | local jid_split = util_Jid.split; |
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17 | local load_roster = require "core.rostermanager".load_roster; |
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18 | local to_number = tonumber; |
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19 | |
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20 | function isListUsed(origin, name, privacy_lists) |
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21 | local user = bare_sessions[origin.username.."@"..origin.host]; |
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22 | if user then |
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23 | for resource, session in pairs(user.sessions) do |
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24 | if resource ~= origin.resource then |
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25 | if session.activePrivacyList == name then |
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26 | return true; |
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27 | elseif session.activePrivacyList == nil and privacy_lists.default == name then |
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28 | return true; |
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29 | end |
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30 | end |
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31 | end |
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32 | end |
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33 | end |
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34 | |
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35 | function isAnotherSessionUsingDefaultList(origin) |
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36 | local user = bare_sessions[origin.username.."@"..origin.host]; |
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37 | if user then |
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38 | for resource, session in pairs(user.sessions) do |
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39 | if resource ~= origin.resource and session.activePrivacyList == nil then |
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40 | return true; |
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41 | end |
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42 | end |
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43 | end |
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44 | end |
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45 | |
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46 | function sendUnavailable(origin, to, from) |
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47 | --[[ example unavailable presence stanza |
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48 | <presence from="node@host/resource" type="unavailable" to="node@host" > |
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49 | <status>Logged out</status> |
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50 | </presence> |
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51 | ]]-- |
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52 | local presence = st.presence({from=from, type="unavailable"}); |
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53 | presence:tag("status"):text("Logged out"); |
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54 | |
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55 | local node, host = jid_bare(to); |
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56 | local bare = node .. "@" .. host; |
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57 | |
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58 | local user = bare_sessions[bare]; |
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59 | if user then |
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60 | for resource, session in pairs(user.sessions) do |
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61 | presence.attr.to = session.full_jid; |
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62 | module:log("debug", "send unavailable to: %s; from: %s", tostring(presence.attr.to), tostring(presence.attr.from)); |
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63 | origin.send(presence); |
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64 | end |
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65 | end |
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66 | end |
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67 | |
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68 | function sendNeededUnavailablePersences(origin, listnameOrItem) -- TODO implement it correctly! |
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69 | if type(listnameOrItem) == "string" then |
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70 | local listname = listnameOrItem; |
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71 | for _,list in ipairs(privacy_lists.lists) do |
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72 | if list.name == listname then |
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73 | for _,item in ipairs(list.items) do |
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74 | sendNeededUnavailablePersences(origin, item); |
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75 | end |
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76 | end |
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77 | end |
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78 | elseif type(listnameOrItem) == "table" then |
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79 | module:log("debug", "got an item, check whether to send unavailable presence stanza or not"); |
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80 | local item = listnameOrItem; |
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81 | |
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82 | if item["presence-out"] == true then |
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83 | if item.type == "jid" then |
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84 | sendUnavailable(origin, item.value, origin.full_jid); |
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85 | elseif item.type == "group" then |
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86 | elseif item.type == "subscription" then |
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87 | elseif item.type == nil then |
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88 | end |
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89 | elseif item["presence-in"] == true then |
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90 | if item.type == "jid" then |
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91 | sendUnavailable(origin, origin.full_jid, item.value); |
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92 | elseif item.type == "group" then |
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93 | elseif item.type == "subscription" then |
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94 | elseif item.type == nil then |
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95 | end |
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96 | end |
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97 | else |
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98 | module:log("debug", "got unknown type: %s", type(listnameOrItem)); |
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99 | end |
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100 | end |
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101 | |
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102 | function declineList(privacy_lists, origin, stanza, which) |
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103 | if which == "default" then |
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104 | if isAnotherSessionUsingDefaultList(origin) then |
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105 | return { "cancel", "conflict", "Another session is online and using the default list."}; |
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106 | end |
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107 | privacy_lists.default = nil; |
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108 | origin.send(st.reply(stanza)); |
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109 | elseif which == "active" then |
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110 | origin.activePrivacyList = nil; |
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111 | origin.send(st.reply(stanza)); |
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112 | else |
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113 | return {"modify", "bad-request", "Neither default nor active list specifed to decline."}; |
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114 | end |
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115 | return true; |
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116 | end |
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117 | |
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118 | function activateList(privacy_lists, origin, stanza, which, name) |
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119 | local list = privacy_lists.lists[name]; |
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120 | |
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121 | if which == "default" and list then |
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122 | if isAnotherSessionUsingDefaultList(origin) then |
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123 | return {"cancel", "conflict", "Another session is online and using the default list."}; |
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124 | end |
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125 | privacy_lists.default = name; |
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126 | origin.send(st.reply(stanza)); |
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127 | --[[ |
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128 | if origin.activePrivacyList == nil then |
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129 | sendNeededUnavailablePersences(origin, name); |
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130 | end |
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131 | ]]-- |
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132 | elseif which == "active" and list then |
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133 | origin.activePrivacyList = name; |
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134 | origin.send(st.reply(stanza)); |
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135 | -- sendNeededUnavailablePersences(origin, name); |
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136 | else |
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137 | return {"modify", "bad-request", "Either not active or default given or unknown list name specified."}; |
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138 | end |
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139 | return true; |
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140 | end |
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141 | |
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142 | function deleteList(privacy_lists, origin, stanza, name) |
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143 | local list = privacy_lists.lists[name]; |
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144 | |
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145 | if list then |
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146 | if isListUsed(origin, name, privacy_lists) then |
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147 | return {"cancel", "conflict", "Another session is online and using the list which should be deleted."}; |
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148 | end |
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149 | if privacy_lists.default == name then |
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150 | privacy_lists.default = nil; |
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151 | end |
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152 | if origin.activePrivacyList == name then |
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153 | origin.activePrivacyList = nil; |
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154 | end |
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155 | privacy_lists.lists[name] = nil; |
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156 | origin.send(st.reply(stanza)); |
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157 | return true; |
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158 | end |
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159 | return {"modify", "bad-request", "Not existing list specifed to be deleted."}; |
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160 | end |
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161 | |
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162 | function createOrReplaceList (privacy_lists, origin, stanza, name, entries, roster) |
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163 | local bare_jid = origin.username.."@"..origin.host; |
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164 | |
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165 | if privacy_lists.lists == nil then |
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166 | privacy_lists.lists = {}; |
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167 | end |
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168 | |
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169 | local list = {}; |
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170 | privacy_lists.lists[name] = list; |
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171 | |
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172 | local orderCheck = {}; |
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173 | list.name = name; |
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174 | list.items = {}; |
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175 | |
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176 | for _,item in ipairs(entries) do |
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177 | if to_number(item.attr.order) == nil or to_number(item.attr.order) < 0 or orderCheck[item.attr.order] ~= nil then |
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178 | return {"modify", "bad-request", "Order attribute not valid."}; |
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179 | end |
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180 | |
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181 | if item.attr.type ~= nil and item.attr.type ~= "jid" and item.attr.type ~= "subscription" and item.attr.type ~= "group" then |
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182 | return {"modify", "bad-request", "Type attribute not valid."}; |
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183 | end |
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184 | |
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185 | local tmp = {}; |
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186 | orderCheck[item.attr.order] = true; |
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187 | |
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188 | tmp["type"] = item.attr.type; |
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189 | tmp["value"] = item.attr.value; |
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190 | tmp["action"] = item.attr.action; |
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191 | tmp["order"] = to_number(item.attr.order); |
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192 | tmp["presence-in"] = false; |
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193 | tmp["presence-out"] = false; |
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194 | tmp["message"] = false; |
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195 | tmp["iq"] = false; |
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196 | |
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197 | if #item.tags > 0 then |
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198 | for _,tag in ipairs(item.tags) do |
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199 | tmp[tag.name] = true; |
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200 | end |
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201 | end |
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202 | |
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203 | if tmp.type == "group" then |
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204 | local found = false; |
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205 | local roster = load_roster(origin.username, origin.host); |
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206 | for jid,item in pairs(roster) do |
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207 | if item.groups ~= nil then |
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208 | for group in pairs(item.groups) do |
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209 | if group == tmp.value then |
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210 | found = true; |
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211 | break; |
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212 | end |
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213 | end |
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214 | if found == true then |
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215 | break; |
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216 | end |
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217 | end |
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218 | end |
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219 | if found == false then |
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220 | return {"cancel", "item-not-found", "Specifed roster group not existing."}; |
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221 | end |
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222 | elseif tmp.type == "subscription" then |
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223 | if tmp.value ~= "both" and |
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224 | tmp.value ~= "to" and |
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225 | tmp.value ~= "from" and |
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226 | tmp.value ~= "none" then |
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227 | return {"cancel", "bad-request", "Subscription value must be both, to, from or none."}; |
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228 | end |
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229 | end |
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230 | |
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231 | if tmp.action ~= "deny" and tmp.action ~= "allow" then |
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232 | return {"cancel", "bad-request", "Action must be either deny or allow."}; |
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233 | end |
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234 | |
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235 | --[[ |
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236 | if (privacy_lists.default == name and origin.activePrivacyList == nil) or origin.activePrivacyList == name then |
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237 | module:log("debug", "calling sendNeededUnavailablePresences!"); |
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238 | -- item is valid and list is active, so send needed unavailable stanzas |
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239 | sendNeededUnavailablePersences(origin, tmp); |
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240 | end |
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241 | ]]-- |
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242 | list.items[#list.items + 1] = tmp; |
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243 | end |
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244 | |
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245 | table.sort(list, function(a, b) return a.order < b.order; end); |
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246 | |
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247 | origin.send(st.reply(stanza)); |
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248 | if bare_sessions[bare_jid] ~= nil then |
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249 | local iq = st.iq ( { type = "set", id="push1" } ); |
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250 | iq:tag ("query", { xmlns = "jabber:iq:privacy" } ); |
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251 | iq:tag ("list", { name = list.name } ):up(); |
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252 | iq:up(); |
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253 | for resource, session in pairs(bare_sessions[bare_jid].sessions) do |
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254 | iq.attr.to = bare_jid.."/"..resource |
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255 | session.send(iq); |
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256 | end |
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257 | else |
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258 | return {"cancel", "bad-request", "internal error."}; |
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259 | end |
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260 | return true; |
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261 | end |
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262 | |
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263 | function getList(privacy_lists, origin, stanza, name) |
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264 | local reply = st.reply(stanza); |
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265 | reply:tag("query", {xmlns="jabber:iq:privacy"}); |
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266 | |
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267 | if name == nil then |
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268 | if privacy_lists.lists then |
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269 | if origin.ActivePrivacyList then |
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270 | reply:tag("active", {name=origin.activePrivacyList}):up(); |
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271 | end |
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272 | if privacy_lists.default then |
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273 | reply:tag("default", {name=privacy_lists.default}):up(); |
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274 | end |
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275 | for _,list in ipairs(privacy_lists.lists) do |
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276 | reply:tag("list", {name=list.name}):up(); |
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277 | end |
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278 | end |
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279 | else |
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280 | local list = privacy_lists.lists[name]; |
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281 | if list then |
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282 | reply = reply:tag("list", {name=list.name}); |
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283 | for _,item in ipairs(list.items) do |
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284 | reply:tag("item", {type=item.type, value=item.value, action=item.action, order=item.order}); |
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285 | if item["message"] then reply:tag("message"):up(); end |
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286 | if item["iq"] then reply:tag("iq"):up(); end |
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287 | if item["presence-in"] then reply:tag("presence-in"):up(); end |
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288 | if item["presence-out"] then reply:tag("presence-out"):up(); end |
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289 | reply:up(); |
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290 | end |
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291 | else |
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292 | return {"cancel", "item-not-found", "Unknown list specified."}; |
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293 | end |
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294 | end |
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295 | |
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296 | origin.send(reply); |
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297 | return true; |
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298 | end |
1293 | 299 | |
300 | module:hook("iq/bare/jabber:iq:privacy:query", function(data) | |
301 | local origin, stanza = data.origin, data.stanza; | |
302 | ||
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303 | if stanza.attr.to == nil then -- only service requests to own bare JID |
1293 | 304 | local query = stanza.tags[1]; -- the query element |
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305 | local valid = false; |
1293 | 306 | local privacy_lists = datamanager.load(origin.username, origin.host, "privacy") or {}; |
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307 | |
1293 | 308 | if stanza.attr.type == "set" then |
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309 | if #query.tags == 1 then -- the <query/> element MUST NOT include more than one child element |
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310 | for _,tag in ipairs(query.tags) do |
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311 | if tag.name == "active" or tag.name == "default" then |
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312 | if tag.attr.name == nil then -- Client declines the use of active / default list |
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313 | valid = declineList(privacy_lists, origin, stanza, tag.name); |
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314 | else -- Client requests change of active / default list |
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315 | valid = activateList(privacy_lists, origin, stanza, tag.name, tag.attr.name); |
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316 | end |
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317 | elseif tag.name == "list" and tag.attr.name then -- Client adds / edits a privacy list |
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318 | if #tag.tags == 0 then -- Client removes a privacy list |
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319 | valid = deleteList(privacy_lists, origin, stanza, tag.attr.name); |
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320 | else -- Client edits a privacy list |
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321 | valid = createOrReplaceList(privacy_lists, origin, stanza, tag.attr.name, tag.tags); |
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322 | end |
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323 | end |
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324 | end |
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325 | end |
1293 | 326 | elseif stanza.attr.type == "get" then |
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327 | local name = nil; |
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328 | local listsToRetrieve = 0; |
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329 | if #query.tags >= 1 then |
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330 | for _,tag in ipairs(query.tags) do |
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331 | if tag.name == "list" then -- Client requests a privacy list from server |
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332 | name = tag.attr.name; |
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333 | listsToRetrieve = listsToRetrieve + 1; |
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334 | end |
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335 | end |
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336 | end |
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337 | if listsToRetrieve == 0 or listsToRetrieve == 1 then |
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338 | valid = getList(privacy_lists, origin, stanza, name); |
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339 | end |
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340 | end |
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341 | |
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342 | if valid ~= true then |
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343 | valid = valid or { "cancel", "bad-request", "Couldn't understand request" }; |
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344 | if valid[1] == nil then |
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345 | valid[1] = "cancel"; |
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346 | end |
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347 | if valid[2] == nil then |
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348 | valid[2] = "bad-request"; |
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349 | end |
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350 | origin.send(st.error_reply(stanza, valid[1], valid[2], valid[3])); |
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351 | else |
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352 | datamanager.store(origin.username, origin.host, "privacy", privacy_lists); |
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353 | end |
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354 | return true; |
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355 | end |
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356 | end); |
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357 | |
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358 | function checkIfNeedToBeBlocked(e, session) |
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359 | local origin, stanza = e.origin, e.stanza; |
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360 | local privacy_lists = datamanager.load(session.username, session.host, "privacy") or {}; |
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361 | local bare_jid = session.username.."@"..session.host; |
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362 | local to = stanza.attr.to; |
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363 | local from = stanza.attr.from; |
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364 | |
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365 | local is_to_user = bare_jid == jid_bare(to); |
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366 | local is_from_user = bare_jid == jid_bare(from); |
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367 | |
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368 | module:log("debug", "stanza: %s, to: %s, from: %s", tostring(stanza.name), tostring(to), tostring(from)); |
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369 | |
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370 | if privacy_lists.lists == nil or |
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371 | not (session.activePrivacyList or privacy_lists.default) |
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372 | then |
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373 | return; -- Nothing to block, default is Allow all |
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374 | end |
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375 | if is_from_user and is_to_user then |
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376 | module:log("debug", "Not blocking communications between user's resources"); |
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377 | return; -- from one of a user's resource to another => HANDS OFF! |
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378 | end |
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379 | |
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380 | local item; |
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381 | local listname = session.activePrivacyList; |
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382 | if listname == nil then |
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383 | listname = privacy_lists.default; -- no active list selected, use default list |
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384 | end |
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385 | local list = privacy_lists.lists[listname]; |
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386 | if not list then |
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387 | module:log("debug", "given privacy list not found. name: %s", listname); |
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388 | return; |
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389 | end |
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390 | for _,item in ipairs(list.items) do |
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391 | local apply = false; |
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392 | local block = false; |
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393 | if ( |
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394 | (stanza.name == "message" and item.message) or |
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395 | (stanza.name == "iq" and item.iq) or |
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396 | (stanza.name == "presence" and is_to_user and item["presence-in"]) or |
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397 | (stanza.name == "presence" and is_from_user and item["presence-out"]) or |
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398 | (item.message == false and item.iq == false and item["presence-in"] == false and item["presence-out"] == false) |
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399 | ) then |
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400 | apply = true; |
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401 | end |
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402 | if apply then |
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403 | local evilJid = {}; |
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404 | apply = false; |
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405 | if is_to_user then |
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406 | module:log("debug", "evil jid is (from): %s", from); |
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407 | evilJid.node, evilJid.host, evilJid.resource = jid_split(from); |
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408 | else |
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409 | module:log("debug", "evil jid is (to): %s", to); |
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410 | evilJid.node, evilJid.host, evilJid.resource = jid_split(to); |
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411 | end |
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412 | if item.type == "jid" and |
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413 | (evilJid.node and evilJid.host and evilJid.resource and item.value == evilJid.node.."@"..evilJid.host.."/"..evilJid.resource) or |
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414 | (evilJid.node and evilJid.host and item.value == evilJid.node.."@"..evilJid.host) or |
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415 | (evilJid.host and evilJid.resource and item.value == evilJid.host.."/"..evilJid.resource) or |
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416 | (evilJid.host and item.value == evilJid.host) then |
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417 | apply = true; |
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418 | block = (item.action == "deny"); |
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419 | elseif item.type == "group" then |
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420 | local roster = load_roster(session.username, session.host); |
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421 | local groups = roster[evilJid.node .. "@" .. evilJid.host].groups; |
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422 | for group in pairs(groups) do |
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423 | if group == item.value then |
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424 | apply = true; |
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425 | block = (item.action == "deny"); |
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426 | break; |
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427 | end |
2523
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428 | end |
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429 | elseif item.type == "subscription" and evilJid.node ~= nil and evilJid.host ~= nil then -- we need a valid bare evil jid |
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430 | local roster = load_roster(session.username, session.host); |
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431 | if roster[evilJid.node .. "@" .. evilJid.host].subscription == item.value then |
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432 | apply = true; |
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433 | block = (item.action == "deny"); |
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434 | end |
2523
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435 | elseif item.type == nil then |
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436 | apply = true; |
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437 | block = (item.action == "deny"); |
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438 | end |
2523
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439 | end |
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440 | if apply then |
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441 | if block then |
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442 | module:log("debug", "stanza blocked: %s, to: %s, from: %s", tostring(stanza.name), tostring(to), tostring(from)); |
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443 | if stanza.name == "message" then |
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444 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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445 | elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then |
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446 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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447 | end |
2523
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448 | return true; -- stanza blocked ! |
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449 | else |
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450 | module:log("debug", "stanza explicitly allowed!") |
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451 | return; |
1293 | 452 | end |
453 | end | |
454 | end | |
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455 | end |
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456 | |
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457 | function preCheckIncoming(e) |
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458 | local session; |
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459 | if e.stanza.attr.to ~= nil then |
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460 | local node, host, resource = jid_split(e.stanza.attr.to); |
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461 | if node == nil or host == nil then |
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462 | return; |
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463 | end |
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464 | if resource == nil then |
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465 | local prio = 0; |
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466 | local session_; |
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467 | if bare_sessions[node.."@"..host] ~= nil then |
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468 | for resource, session_ in pairs(bare_sessions[node.."@"..host].sessions) do |
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469 | if session_.priority ~= nil and session_.priority > prio then |
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470 | session = session_; |
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471 | prio = session_.priority; |
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472 | end |
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473 | end |
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474 | end |
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475 | else |
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476 | session = full_sessions[node.."@"..host.."/"..resource]; |
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477 | end |
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478 | if session ~= nil then |
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479 | return checkIfNeedToBeBlocked(e, session); |
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480 | else |
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481 | module:log("debug", "preCheckIncoming: Couldn't get session for jid: %s@%s/%s", tostring(node), tostring(host), tostring(resource)); |
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482 | end |
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483 | end |
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484 | end |
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485 | |
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486 | function preCheckOutgoing(e) |
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487 | local session = e.origin; |
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488 | if e.stanza.attr.from == nil then |
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489 | e.stanza.attr.from = session.username .. "@" .. session.host; |
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490 | if session.resource ~= nil then |
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491 | e.stanza.attr.from = e.stanza.attr.from .. "/" .. session.resource; |
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492 | end |
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493 | end |
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494 | return checkIfNeedToBeBlocked(e, session); |
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495 | end |
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496 | |
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497 | module:hook("pre-message/full", preCheckOutgoing, 500); |
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498 | module:hook("pre-message/bare", preCheckOutgoing, 500); |
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499 | module:hook("pre-message/host", preCheckOutgoing, 500); |
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500 | module:hook("pre-iq/full", preCheckOutgoing, 500); |
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501 | module:hook("pre-iq/bare", preCheckOutgoing, 500); |
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502 | module:hook("pre-iq/host", preCheckOutgoing, 500); |
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503 | module:hook("pre-presence/full", preCheckOutgoing, 500); |
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504 | module:hook("pre-presence/bare", preCheckOutgoing, 500); |
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505 | module:hook("pre-presence/host", preCheckOutgoing, 500); |
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506 | |
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507 | module:hook("message/full", preCheckIncoming, 500); |
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508 | module:hook("message/bare", preCheckIncoming, 500); |
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509 | module:hook("message/host", preCheckIncoming, 500); |
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510 | module:hook("iq/full", preCheckIncoming, 500); |
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511 | module:hook("iq/bare", preCheckIncoming, 500); |
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512 | module:hook("iq/host", preCheckIncoming, 500); |
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513 | module:hook("presence/full", preCheckIncoming, 500); |
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514 | module:hook("presence/bare", preCheckIncoming, 500); |
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515 | module:hook("presence/host", preCheckIncoming, 500); |