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core/stanza_router.lua @ 478:3abf90751a8f
Add COPYING, remove LICENSE
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Sat, 29 Nov 2008 16:25:14 +0000 |
| parent | 468:ab49cb6d0e92 |
| child | 519:cccd610a0ef9 |
| rev | line source |
|---|---|
| 30 | 1 |
| 2 local log = require "util.logger".init("stanzarouter") | |
| 3 | |
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4 local st = require "util.stanza"; |
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5 local send_s2s = require "core.s2smanager".send_to_host; |
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6 local user_exists = require "core.usermanager".user_exists; |
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7 |
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8 local rostermanager = require "core.rostermanager"; |
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9 local sessionmanager = require "core.sessionmanager"; |
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10 local offlinemanager = require "core.offlinemanager"; |
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11 |
| 145 | 12 local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
| 146 | 13 local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
| 191 | 14 |
| 15 local modules_handle_stanza = require "core.modulemanager".handle_stanza; | |
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16 local component_handle_stanza = require "core.componentmanager".handle_stanza; |
| 191 | 17 |
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18 local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; |
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19 local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; |
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20 local handle_normal_presence = require "core.presencemanager".handle_normal_presence; |
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21 |
| 145 | 22 local format = string.format; |
| 23 local tostring = tostring; | |
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24 local t_concat = table.concat; |
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25 local t_insert = table.insert; |
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26 local tonumber = tonumber; |
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27 local s_find = string.find; |
| 145 | 28 |
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29 local jid_split = require "util.jid".split; |
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30 local print = print; |
| 30 | 31 |
| 32 function core_process_stanza(origin, stanza) | |
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33 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag()) |
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34 |
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35 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. |
| 73 | 36 -- TODO verify validity of stanza (as well as JID validity) |
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37 if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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38 if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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39 error("Invalid IQ"); |
| 148 | 40 elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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41 error("Invalid IQ"); |
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42 end |
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43 end |
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44 |
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45 if origin.type == "c2s" and not origin.full_jid |
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46 and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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47 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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48 error("Client MUST bind resource after auth"); |
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49 end |
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50 |
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51 -- TODO also, stanzas should be returned to their original state before the function ends |
| 145 | 52 if origin.type == "c2s" then |
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53 stanza.attr.from = origin.full_jid; |
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54 end |
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55 local to = stanza.attr.to; |
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56 local node, host, resource = jid_split(to); |
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57 local to_bare = node and (node.."@"..host) or host; -- bare JID |
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58 local from = stanza.attr.from; |
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59 local from_node, from_host, from_resource = jid_split(from); |
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60 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
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61 |
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62 if origin.type == "s2sin" then |
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63 if origin.from_host ~= from_host then -- remote server trying to impersonate some other server? |
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64 log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from, origin.from_host); |
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65 return; -- FIXME what should we do here? does this work with subdomains? |
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66 end |
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67 end |
| 213 | 68 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
| 69 log("warn", "stanza recieved for a non-local server"); | |
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70 return; -- FIXME what should we do here? |
| 213 | 71 end]] -- FIXME |
| 207 | 72 |
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73 -- FIXME do stanzas not of jabber:client get handled by components? |
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74 if origin.type == "s2sin" or origin.type == "c2s" then |
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75 if not to then |
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76 core_handle_stanza(origin, stanza); |
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77 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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78 core_handle_stanza(origin, stanza); |
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79 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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80 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
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81 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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82 component_handle_stanza(origin, stanza); |
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83 elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource |
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84 component_handle_stanza(origin, stanza); |
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85 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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86 component_handle_stanza(origin, stanza); |
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87 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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88 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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89 elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID |
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90 core_handle_stanza(origin, stanza); |
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91 else |
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92 core_route_stanza(origin, stanza); |
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93 end |
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94 else |
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95 core_handle_stanza(origin, stanza); |
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96 end |
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97 end |
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98 |
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99 -- This function handles stanzas which are not routed any further, |
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100 -- that is, they are handled by this server |
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101 function core_handle_stanza(origin, stanza) |
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102 -- Handlers |
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103 if modules_handle_stanza(stanza.attr.to or origin.host, origin, stanza) then return; end |
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104 if origin.type == "c2s" or origin.type == "c2s_unauthed" then |
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105 local session = origin; |
| 207 | 106 |
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107 if stanza.name == "presence" and origin.roster then |
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108 if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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109 handle_normal_presence(origin, stanza, core_route_stanza); |
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110 else |
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111 log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
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112 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then |
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113 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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114 end |
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115 end |
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116 else |
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117 log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
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118 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
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119 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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120 end |
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121 end -- TODO handle other stanzas |
| 145 | 122 else |
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123 log("warn", "Unhandled origin: %s", origin.type); |
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124 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
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125 -- s2s stanzas can get here |
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126 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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127 end |
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128 end |
| 30 | 129 end |
| 130 | |
| 131 function core_route_stanza(origin, stanza) | |
| 132 -- Hooks | |
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133 --- ...later |
| 207 | 134 |
| 30 | 135 -- Deliver |
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136 local to = stanza.attr.to; |
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137 local node, host, resource = jid_split(to); |
| 170 | 138 local to_bare = node and (node.."@"..host) or host; -- bare JID |
| 139 local from = stanza.attr.from; | |
| 140 local from_node, from_host, from_resource = jid_split(from); | |
| 141 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
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142 |
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143 -- Auto-detect origin if not specified |
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144 origin = origin or hosts[from_host]; |
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145 if not origin then return false; end |
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146 |
| 151 | 147 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
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148 |
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149 local host_session = hosts[host] |
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150 if host_session and host_session.type == "local" then |
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151 -- Local host |
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152 local user = host_session.sessions[node]; |
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153 if user then |
| 72 | 154 local res = user.sessions[resource]; |
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155 if not res then |
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156 -- if we get here, resource was not specified or was unavailable |
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157 if stanza.name == "presence" then |
| 151 | 158 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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159 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
| 151 | 160 else -- sender is available or unavailable |
|
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161 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
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162 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
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163 stanza.attr.to = session.full_jid; -- reset at the end of function |
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164 session.send(stanza); |
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165 end |
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166 end |
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167 end |
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168 elseif stanza.name == "message" then -- select a resource to recieve message |
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169 local priority = 0; |
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170 local recipients = {}; |
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171 for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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172 local p = session.priority; |
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173 if p > priority then |
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174 priority = p; |
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175 recipients = {session}; |
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176 elseif p == priority then |
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177 t_insert(recipients, session); |
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178 end |
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179 end |
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180 local count = 0; |
| 237 | 181 for _, session in pairs(recipients) do |
|
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182 session.send(stanza); |
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183 count = count + 1; |
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184 end |
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185 if count == 0 then |
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186 offlinemanager.store(node, host, stanza); |
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187 -- TODO deal with storage errors |
|
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188 end |
|
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189 else |
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190 -- TODO send IQ error |
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191 end |
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192 else |
|
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193 -- User + resource is online... |
| 170 | 194 stanza.attr.to = res.full_jid; -- reset at the end of function |
|
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195 res.send(stanza); -- Yay \o/ |
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196 end |
|
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197 else |
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198 -- user not online |
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199 if user_exists(node, host) then |
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200 if stanza.name == "presence" then |
|
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201 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
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202 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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203 else |
|
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204 -- TODO send unavailable presence or unsubscribed |
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205 end |
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206 elseif stanza.name == "message" then |
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207 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
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208 offlinemanager.store(node, host, stanza); |
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209 -- FIXME don't store messages with only chat state notifications |
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210 end |
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211 -- TODO allow configuration of offline storage |
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212 -- TODO send error if not storing offline |
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213 elseif stanza.name == "iq" then |
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214 -- TODO send IQ error |
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215 end |
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216 else -- user does not exist |
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217 -- TODO we would get here for nodeless JIDs too. Do something fun maybe? Echo service? Let plugins use xmpp:server/resource addresses? |
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218 if stanza.name == "presence" then |
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219 if stanza.attr.type == "probe" then |
|
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220 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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221 end |
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222 -- else ignore |
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223 else |
|
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224 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
|
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225 end |
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226 end |
|
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227 end |
| 148 | 228 elseif origin.type == "c2s" then |
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229 -- Remote host |
| 170 | 230 local xmlns = stanza.attr.xmlns; |
| 148 | 231 --stanza.attr.xmlns = "jabber:server"; |
| 232 stanza.attr.xmlns = nil; | |
| 146 | 233 log("debug", "sending s2s stanza: %s", tostring(stanza)); |
| 170 | 234 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
| 235 stanza.attr.xmlns = xmlns; -- reset | |
|
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236 elseif origin.type == "component" or origin.type == "local" then |
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237 -- Route via s2s for components and modules |
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238 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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239 send_s2s(origin.host, host, stanza); |
| 148 | 240 else |
| 241 log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
|
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242 end |
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243 stanza.attr.to = to; -- reset |
| 30 | 244 end |
