prosody
062b849ca088
plugins/mod_storage_sql_ejabberd.lua

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plugins/mod_storage_sql_ejabberd.lua @ 4007:062b849ca088

mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
author Waqas Hussain <waqas20@gmail.com>
date Wed, 05 Jan 2011 06:56:36 +0500
parent 3646:66c5fb109e64
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 local setmetatable = setmetatable;
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3 local error = error;
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4 local unpack = unpack;
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5 local module = module;
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6 local tostring = tostring;
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7 local pairs, next = pairs, next;
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8 local prosody = prosody;
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9 local assert = assert;
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10 local require = require;
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11 local st = require "util.stanza";
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12 local DBI = require "DBI";
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14 -- connect to db
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15 local params = module:get_option("sql_ejabberd") or error("No sql_ejabberd config option");
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16 local database;
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17 do
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18 module:log("debug", "Opening database: %s", "dbi:"..params.driver..":"..params.database);
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19 prosody.unlock_globals();
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20 local dbh, err = DBI.Connect(
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21 params.driver, params.database,
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22 params.username, params.password,
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23 params.host, params.port
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24 );
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25 prosody.lock_globals();
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26 assert(dbh, err);
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27 dbh:autocommit(true);
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28 database = dbh;
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29 end
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31 -- initialize db
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32 local ejabberd_init = module:require("ejabberd_init");
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33 ejabberd_init.init(database);
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34
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35 local sqlcache = {};
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36 local function prepare(sql)
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37 module:log("debug", "query: %s", sql);
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38 local err;
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39 local r = sqlcache[sql];
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40 if not r then
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41 r, err = database:prepare(sql);
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42 if not r then error("Unable to prepare SQL statement: "..err); end
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43 sqlcache[sql] = r;
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44 end
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45 return r;
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46 end
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47
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48 local _parse_xml = module:require("xmlparse");
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49 local function parse_xml(str)
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50 local s = _parse_xml(str);
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51 if s and not s.gsub then
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52 return st.preserialize(s);
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53 end
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54 end
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55 local function unparse_xml(s)
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56 return tostring(st.deserialize(s));
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57 end
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58
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59
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60 local handlers = {};
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61
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62 handlers.accounts = {
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63 get = function(self, user)
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64 local select = self:query("select password from users where username=? and host=?", user, self.host);
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65 local row = select and select:fetch();
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66 if row then return { password = row[1] }; end
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67 end;
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68 set = function(self, user, data)
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69 if data and data.password then
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70 return self:modify("update users set password=? where username=? and host=?", data.password, user, self.host)
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71 or self:modify("insert into users (username, host, password) values (?, ?, ?)", user, self.host, data.password);
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72 else
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73 return self:modify("delete from users where username=? and host=?", user, self.host);
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74 end
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75 end;
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76 };
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77 handlers.vcard = {
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78 get = function(self, user)
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79 local select = self:query("select vcard from vcard where username=? and host=?", user, self.host);
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80 local row = select and select:fetch();
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81 if row then return parse_xml(row[1]); end
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82 end;
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83 set = function(self, user, data)
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84 if data then
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85 data = unparse_xml(data);
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86 return self:modify("update vcard set vcard=? where username=? and host=?", data, user, self.host)
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87 or self:modify("insert into vcard (username, host, vcard) values (?, ?, ?)", user, self.host, data);
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88 else
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89 return self:modify("delete from vcard where username=? and host=?", user, self.host);
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90 end
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91 end;
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92 };
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93 handlers.private = {
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94 get = function(self, user)
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95 local select = self:query("select namespace,data from private_storage where username=? and host=?", user, self.host);
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96 if select then
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97 local data = {};
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98 for row in select:rows() do
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99 data[row[1]] = parse_xml(row[2]);
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100 end
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101 return data;
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102 end
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103 end;
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104 set = function(self, user, data)
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105 if data then
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106 self:modify("delete from private_storage where username=? and host=?", user, self.host);
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107 for namespace,text in pairs(data) do
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108 self:modify("insert into private_storage (username, host, namespace, data) values (?, ?, ?, ?)", user, self.host, namespace, unparse_xml(text));
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109 end
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110 return true;
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111 else
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112 return self:modify("delete from private_storage where username=? and host=?", user, self.host);
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113 end
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114 end;
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115 -- TODO map_set, map_get
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116 };
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117 local subscription_map = { N = "none", B = "both", F = "from", T = "to" };
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118 local subscription_map_reverse = { none = "N", both = "B", from = "F", to = "T" };
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119 handlers.roster = {
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120 get = function(self, user)
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121 local select = self:query("select jid,nick,subscription,ask,server,subscribe,type from rosterusers where username=?", user);
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122 if select then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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123 local roster = { pending = {} };
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124 for row in select:rows() do
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125 local jid,nick,subscription,ask,server,subscribe,typ = unpack(row);
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126 local item = { groups = {} };
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127 if nick == "" then nick = nil; end
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128 item.nick = nick;
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129 item.subscription = subscription_map[subscription];
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130 if ask == "N" then ask = nil;
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131 elseif ask == "O" then ask = "subscribe"
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132 elseif ask == "I" then roster.pending[jid] = true; ask = nil;
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133 elseif ask == "B" then roster.pending[jid] = true; ask = "subscribe";
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134 else module:log("debug", "bad roster_item.ask: %s", ask); ask = nil; end
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135 item.ask = ask;
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136 roster[jid] = item;
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137 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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138
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139 select = self:query("select jid,grp from rostergroups where username=?", user);
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140 if select then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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141 for row in select:rows() do
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142 local jid,grp = unpack(row);
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143 if roster[jid] then roster[jid].groups[grp] = true; end
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144 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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145 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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146 select = self:query("select version from roster_version where username=?", user);
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147 local row = select and select:fetch();
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148 if row then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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149 roster[false] = { version = row[1]; };
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150 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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151 return roster;
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152 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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153 end;
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154 set = function(self, user, data)
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155 if data and next(data) ~= nil then
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156 self:modify("delete from rosterusers where username=?", user);
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157 self:modify("delete from rostergroups where username=?", user);
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158 self:modify("delete from roster_version where username=?", user);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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159 local done = {};
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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160 local pending = data.pending or {};
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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161 for jid,item in pairs(data) do
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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162 if jid and jid ~= "pending" then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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163 local subscription = subscription_map_reverse[item.subscription];
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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164 local ask;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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165 if pending[jid] then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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166 if item.ask then ask = "B"; else ask = "I"; end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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167 else
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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168 if item.ask then ask = "O"; else ask = "N"; end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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169 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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170 local r = self:modify("insert into rosterusers (username,jid,nick,subscription,ask,askmessage,server,subscribe) values (?, ?, ?, ?, ?, '', '', '')", user, jid, item.nick or "", subscription, ask);
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171 if not r then module:log("debug", "--- :( %s", tostring(r)); end
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172 done[jid] = true;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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173 for group in pairs(item.groups) do
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174 self:modify("insert into rostergroups (username,jid,grp) values (?, ?, ?)", user, jid, group);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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175 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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176 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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177 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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178 for jid in pairs(pending) do
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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179 if not done[jid] then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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180 self:modify("insert into rosterusers (username,jid,nick,subscription,ask,askmessage,server,subscribe) values (?, ?, ?, ?, ?. ''. ''. '')", user, jid, "", "N", "I");
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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181 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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182 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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183 local version = data[false] and data[false].version;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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184 if version then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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185 self:modify("insert into roster_version (username,version) values (?, ?)", user, version);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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186 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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187 return true;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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188 else
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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189 self:modify("delete from rosterusers where username=?", user);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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190 self:modify("delete from rostergroups where username=?", user);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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191 self:modify("delete from roster_version where username=?", user);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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192 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
Waqas Hussain <waqas20@gmail.com>
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193 end;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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194 };
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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195
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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196 -----------------------------
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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197 local driver = {};
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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198 driver.__index = driver;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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199
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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200 function driver:query(sql, ...)
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201 local stmt,err = prepare(sql);
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202 if not stmt then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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203 module:log("error", "Failed to prepare SQL [[%s]], error: %s", sql, err);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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204 return nil, err;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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205 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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206 local ok, err = stmt:execute(...);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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207 if not ok then
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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208 module:log("error", "Failed to execute SQL [[%s]], error: %s", sql, err);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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209 return nil, err;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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210 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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211 return stmt;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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parents:
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212 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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213 function driver:modify(sql, ...)
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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214 local stmt, err = self:query(sql, ...);
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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215 if stmt and stmt:affected() > 0 then return stmt; end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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216 return nil, err;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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217 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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218
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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219 function driver:open(datastore, typ)
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220 local instance = setmetatable({ host = module.host, datastore = datastore }, self);
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5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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221 local handler = handlers[datastore];
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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222 if not handler then return nil; end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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223 for key,val in pairs(handler) do
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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224 instance[key] = val;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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225 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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226 if instance.init then instance:init(); end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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227 return instance;
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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228 end
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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229
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230 -----------------------------
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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231
5ba0e094a5e2 storage/mod_ejabberd (and associated library): Initial commit.
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232 module:add_item("data-driver", driver);