prosody
92b6aa3ea2ce
plugins/mod_storage_xep0227.lua

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plugins/mod_storage_xep0227.lua @ 7840:92b6aa3ea2ce

mod_mam: Decrease priority to zero
author Kim Alvefur <zash@zash.se>
date Fri, 18 Nov 2016 10:44:27 +0100
parent 6704:03afecdf2e3c
child 8350:3ca11d408382
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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9a1f6239b63c storage/mod_xep0227: Initial commit.
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1
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2 local ipairs, pairs = ipairs, pairs;
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3 local setmetatable = setmetatable;
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4 local tostring = tostring;
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5 local next = next;
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6 local t_remove = table.remove;
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7 local os_remove = os.remove;
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8 local io_open = io.open;
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9
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10 local paths = require"util.paths";
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11 local st = require "util.stanza";
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12 local parse_xml_real = require "util.xml".parse;
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13
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14 local function getXml(user, host)
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15 local jid = user.."@"..host;
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16 local path = paths.join(prosody.paths.data, jid..".xml");
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17 local f = io_open(path);
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18 if not f then return; end
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19 local s = f:read("*a");
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20 f:close();
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21 return parse_xml_real(s);
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22 end
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23 local function setXml(user, host, xml)
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24 local jid = user.."@"..host;
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25 local path = paths.join(prosody.paths.data, jid..".xml");
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26 local f, err = io_open(path, "w");
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27 if not f then return f, err; end
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28 if xml then
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29 local s = tostring(xml);
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30 f:write(s);
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31 f:close();
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32 return true;
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33 else
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34 f:close();
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35 return os_remove(path);
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36 end
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37 end
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38 local function getUserElement(xml)
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39 if xml and xml.name == "server-data" then
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40 local host = xml.tags[1];
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41 if host and host.name == "host" then
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42 local user = host.tags[1];
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43 if user and user.name == "user" then
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44 return user;
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45 end
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46 end
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47 end
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48 end
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49 local function createOuterXml(user, host)
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50 return st.stanza("server-data", {xmlns='urn:xmpp:pie:0'})
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51 :tag("host", {jid=host})
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52 :tag("user", {name = user});
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53 end
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54 local function removeFromArray(array, value)
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55 for i,item in ipairs(array) do
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56 if item == value then
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57 t_remove(array, i);
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58 return;
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59 end
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60 end
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61 end
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62 local function removeStanzaChild(s, child)
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63 removeFromArray(s.tags, child);
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64 removeFromArray(s, child);
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65 end
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66
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67 local handlers = {};
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68
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69 -- In order to support mod_auth_internal_hashed
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70 local extended = "http://prosody.im/protocol/extended-xep0227\1";
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71
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72 handlers.accounts = {
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73 get = function(self, user)
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74 user = getUserElement(getXml(user, self.host));
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75 if user and user.attr.password then
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76 return { password = user.attr.password };
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77 elseif user then
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78 local data = {};
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79 for k, v in pairs(user.attr) do
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80 if k:sub(1, #extended) == extended then
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81 data[k:sub(#extended+1)] = v;
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82 end
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83 end
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84 return data;
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85 end
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86 end;
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87 set = function(self, user, data)
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88 if data then
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89 local xml = getXml(user, self.host);
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90 if not xml then xml = createOuterXml(user, self.host); end
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91 local usere = getUserElement(xml);
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92 for k, v in pairs(data) do
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93 if k == "password" then
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94 usere.attr.password = v;
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95 else
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96 usere.attr[extended..k] = v;
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97 end
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98 end
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99 return setXml(user, self.host, xml);
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100 else
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101 return setXml(user, self.host, nil);
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102 end
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103 end;
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104 };
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105 handlers.vcard = {
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106 get = function(self, user)
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107 user = getUserElement(getXml(user, self.host));
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108 if user then
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109 local vcard = user:get_child("vCard", 'vcard-temp');
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110 if vcard then
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111 return st.preserialize(vcard);
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112 end
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113 end
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114 end;
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115 set = function(self, user, data)
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116 local xml = getXml(user, self.host);
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117 local usere = xml and getUserElement(xml);
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118 if usere then
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119 local vcard = usere:get_child("vCard", 'vcard-temp');
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120 if vcard then
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121 removeStanzaChild(usere, vcard);
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122 elseif not data then
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123 return true;
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124 end
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125 if data then
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126 vcard = st.deserialize(data);
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127 usere:add_child(vcard);
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128 end
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129 return setXml(user, self.host, xml);
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130 end
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131 return true;
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132 end;
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133 };
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134 handlers.private = {
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135 get = function(self, user)
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136 user = getUserElement(getXml(user, self.host));
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137 if user then
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138 local private = user:get_child("query", "jabber:iq:private");
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139 if private then
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140 local r = {};
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141 for _, tag in ipairs(private.tags) do
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142 r[tag.name..":"..tag.attr.xmlns] = st.preserialize(tag);
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143 end
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144 return r;
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145 end
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146 end
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147 end;
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148 set = function(self, user, data)
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149 local xml = getXml(user, self.host);
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150 local usere = xml and getUserElement(xml);
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151 if usere then
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152 local private = usere:get_child("query", 'jabber:iq:private');
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153 if private then removeStanzaChild(usere, private); end
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154 if data and next(data) ~= nil then
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155 private = st.stanza("query", {xmlns='jabber:iq:private'});
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156 for _,tag in pairs(data) do
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157 private:add_child(st.deserialize(tag));
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158 end
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159 usere:add_child(private);
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160 end
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161 return setXml(user, self.host, xml);
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162 end
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163 return true;
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164 end;
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165 };
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166
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167 -----------------------------
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168 local driver = {};
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169
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170 function driver:open(datastore, typ)
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171 local handler = handlers[datastore];
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172 if not handler then return nil, "unsupported-datastore"; end
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173 local instance = setmetatable({ host = module.host; datastore = datastore; }, { __index = handler });
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174 if instance.init then instance:init(); end
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175 return instance;
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176 end
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177
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178 module:provides("storage", driver);