Software / code / prosody
Annotate
core/stanza_router.lua @ 354:9b461ae785b1
Remove version=1.0 on s2s stream headers, again.
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Thu, 20 Nov 2008 01:14:31 +0000 |
| parent | 340:a31715bf08eb |
| child | 358:ffb1a720f5ae |
| rev | line source |
|---|---|
| 30 | 1 |
| 2 -- The code in this file should be self-explanatory, though the logic is horrible | |
| 3 -- for more info on that, see doc/stanza_routing.txt, which attempts to condense | |
| 4 -- the rules from the RFCs (mainly 3921) | |
| 5 | |
| 6 require "core.servermanager" | |
| 7 | |
| 8 local log = require "util.logger".init("stanzarouter") | |
| 9 | |
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10 local st = require "util.stanza"; |
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11 local send_s2s = require "core.s2smanager".send_to_host; |
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12 local user_exists = require "core.usermanager".user_exists; |
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13 |
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14 local rostermanager = require "core.rostermanager"; |
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15 local sessionmanager = require "core.sessionmanager"; |
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16 local offlinemanager = require "core.offlinemanager"; |
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17 |
| 145 | 18 local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
| 146 | 19 local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
| 191 | 20 |
| 21 local modules_handle_stanza = require "core.modulemanager".handle_stanza; | |
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22 local component_handle_stanza = require "core.componentmanager".handle_stanza; |
| 191 | 23 |
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24 local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; |
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25 local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; |
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26 |
| 145 | 27 local format = string.format; |
| 28 local tostring = tostring; | |
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29 local t_concat = table.concat; |
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30 local t_insert = table.insert; |
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31 local tonumber = tonumber; |
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32 local s_find = string.find; |
| 145 | 33 |
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34 local jid_split = require "util.jid".split; |
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35 local print = print; |
| 30 | 36 |
| 37 function core_process_stanza(origin, stanza) | |
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38 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag()) |
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39 |
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40 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. |
| 73 | 41 -- TODO verify validity of stanza (as well as JID validity) |
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42 if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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43 if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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44 error("Invalid IQ"); |
| 148 | 45 elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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46 error("Invalid IQ"); |
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47 end |
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48 end |
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49 |
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50 if origin.type == "c2s" and not origin.full_jid |
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51 and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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52 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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53 error("Client MUST bind resource after auth"); |
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54 end |
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55 |
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56 -- TODO also, stanzas should be returned to their original state before the function ends |
| 145 | 57 if origin.type == "c2s" then |
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58 stanza.attr.from = origin.full_jid; |
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59 end |
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60 local to = stanza.attr.to; |
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61 local node, host, resource = jid_split(to); |
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62 local to_bare = node and (node.."@"..host) or host; -- bare JID |
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63 local from = stanza.attr.from; |
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64 local from_node, from_host, from_resource = jid_split(from); |
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65 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
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66 |
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67 if origin.type == "s2sin" then |
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68 if origin.from_host ~= from_host then -- remote server trying to impersonate some other server? |
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69 log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from, origin.from_host); |
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70 return; -- FIXME what should we do here? does this work with subdomains? |
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71 end |
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72 end |
| 213 | 73 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
| 74 log("warn", "stanza recieved for a non-local server"); | |
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75 return; -- FIXME what should we do here? |
| 213 | 76 end]] -- FIXME |
| 207 | 77 |
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78 -- FIXME do stanzas not of jabber:client get handled by components? |
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79 if origin.type == "s2sin" or origin.type == "c2s" then |
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80 if not to then |
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81 core_handle_stanza(origin, stanza); |
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82 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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83 core_handle_stanza(origin, stanza); |
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84 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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85 modules_handle_stanza(origin, stanza); |
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86 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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87 component_handle_stanza(origin, stanza); |
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88 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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89 component_handle_stanza(origin, stanza); |
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90 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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91 component_handle_stanza(origin, stanza); |
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92 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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93 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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94 elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID |
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95 core_handle_stanza(origin, stanza); |
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96 else |
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97 core_route_stanza(origin, stanza); |
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98 end |
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99 else |
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100 core_handle_stanza(origin, stanza); |
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101 end |
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102 end |
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103 |
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104 -- This function handles stanzas which are not routed any further, |
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105 -- that is, they are handled by this server |
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106 function core_handle_stanza(origin, stanza) |
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107 -- Handlers |
| 191 | 108 if modules_handle_stanza(origin, stanza) then return; end |
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109 if origin.type == "c2s" or origin.type == "c2s_unauthed" then |
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110 local session = origin; |
| 207 | 111 |
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112 if stanza.name == "presence" and origin.roster then |
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113 if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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114 for jid in pairs(origin.roster) do -- broadcast to all interested contacts |
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115 local subscription = origin.roster[jid].subscription; |
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116 if subscription == "both" or subscription == "from" then |
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117 stanza.attr.to = jid; |
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118 core_route_stanza(origin, stanza); |
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119 end |
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120 end |
| 151 | 121 local node, host = jid_split(stanza.attr.from); |
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122 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources |
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123 if res ~= origin and res.full_jid then -- to resource. FIXME is res.full_jid the correct check? Maybe it should be res.presence |
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124 stanza.attr.to = res.full_jid; |
|
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125 core_route_stanza(origin, stanza); |
|
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126 end |
| 151 | 127 end |
|
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128 if stanza.attr.type == nil and not origin.presence then -- initial presence |
|
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129 local probe = st.presence({from = origin.full_jid, type = "probe"}); |
|
152
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130 for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to |
|
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131 local subscription = origin.roster[jid].subscription; |
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132 if subscription == "both" or subscription == "to" then |
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133 probe.attr.to = jid; |
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134 core_route_stanza(origin, probe); |
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135 end |
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136 end |
|
199
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137 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources |
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138 if res ~= origin and res.presence then |
|
152
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139 res.presence.attr.to = origin.full_jid; |
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140 core_route_stanza(res, res.presence); |
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141 res.presence.attr.to = nil; |
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142 end |
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143 end |
|
199
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144 if origin.roster.pending then -- resend incoming subscription requests |
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|
145 for jid in pairs(origin.roster.pending) do |
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146 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original? |
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147 end |
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148 end |
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|
149 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host}); |
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|
150 for jid, item in pairs(origin.roster) do -- resend outgoing subscription requests |
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|
151 if item.ask then |
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152 request.attr.to = jid; |
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153 core_route_stanza(origin, request); |
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154 end |
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155 end |
|
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156 for _, msg in ipairs(offlinemanager.load(node, host) or {}) do |
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157 origin.send(msg); -- FIXME do we need to modify to/from in any way? |
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158 end |
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159 offlinemanager.deleteAll(node, host); |
|
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160 end |
|
199
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161 origin.priority = 0; |
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162 if stanza.attr.type == "unavailable" then |
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163 origin.presence = nil; |
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164 else |
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165 origin.presence = stanza; |
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166 local priority = stanza:child_with_name("priority"); |
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167 if priority and #priority > 0 then |
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168 priority = t_concat(priority); |
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169 if s_find(priority, "^[+-]?[0-9]+$") then |
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170 priority = tonumber(priority); |
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171 if priority < -128 then priority = -128 end |
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172 if priority > 127 then priority = 127 end |
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|
173 origin.priority = priority; |
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|
174 end |
|
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|
175 end |
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|
176 end |
|
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177 stanza.attr.to = nil; -- reset it |
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178 else |
|
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|
179 log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
|
340
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|
180 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then |
|
264
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|
181 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
|
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182 end |
|
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183 end |
|
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|
184 else |
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|
185 log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
|
340
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|
186 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
|
264
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|
187 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
|
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262
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|
188 end |
|
212
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diff
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|
189 end -- TODO handle other stanzas |
| 145 | 190 else |
|
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191 log("warn", "Unhandled origin: %s", origin.type); |
|
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|
192 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
|
264
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262
diff
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|
193 -- s2s stanzas can get here |
|
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262
diff
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|
194 (origin.sends2s or origin.send)(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
|
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262
diff
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|
195 end |
|
71
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diff
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|
196 end |
| 30 | 197 end |
| 198 | |
| 199 function core_route_stanza(origin, stanza) | |
| 200 -- Hooks | |
|
68
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|
201 --- ...later |
| 207 | 202 |
| 30 | 203 -- Deliver |
|
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204 local to = stanza.attr.to; |
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205 local node, host, resource = jid_split(to); |
| 170 | 206 local to_bare = node and (node.."@"..host) or host; -- bare JID |
| 207 local from = stanza.attr.from; | |
| 208 local from_node, from_host, from_resource = jid_split(from); | |
| 209 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
|
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|
210 |
| 151 | 211 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
|
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|
212 |
|
68
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|
213 local host_session = hosts[host] |
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|
214 if host_session and host_session.type == "local" then |
|
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|
215 -- Local host |
|
71
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diff
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|
216 local user = host_session.sessions[node]; |
|
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diff
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|
217 if user then |
| 72 | 218 local res = user.sessions[resource]; |
|
71
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|
219 if not res then |
|
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|
220 -- if we get here, resource was not specified or was unavailable |
|
106
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diff
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|
221 if stanza.name == "presence" then |
| 151 | 222 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
321
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Waqas Hussain <waqas20@gmail.com>
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274
diff
changeset
|
223 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
| 151 | 224 else -- sender is available or unavailable |
|
200
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225 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
|
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226 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
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227 stanza.attr.to = session.full_jid; -- reset at the end of function |
|
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|
228 session.send(stanza); |
|
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|
229 end |
|
106
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diff
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|
230 end |
|
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|
231 end |
|
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|
232 elseif stanza.name == "message" then -- select a resource to recieve message |
|
200
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diff
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|
233 local priority = 0; |
|
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199
diff
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|
234 local recipients = {}; |
|
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199
diff
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|
235 for _, session in pairs(user.sessions) do -- find resource with greatest priority |
|
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diff
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|
236 local p = session.priority; |
|
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diff
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|
237 if p > priority then |
|
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diff
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|
238 priority = p; |
|
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diff
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|
239 recipients = {session}; |
|
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diff
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|
240 elseif p == priority then |
|
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diff
changeset
|
241 t_insert(recipients, session); |
|
106
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105
diff
changeset
|
242 end |
|
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diff
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|
243 end |
|
249
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237
diff
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|
244 local count = 0; |
| 237 | 245 for _, session in pairs(recipients) do |
|
200
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diff
changeset
|
246 session.send(stanza); |
|
249
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237
diff
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|
247 count = count + 1; |
|
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237
diff
changeset
|
248 end |
|
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237
diff
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|
249 if count == 0 then |
|
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Waqas Hussain <waqas20@gmail.com>
parents:
237
diff
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250 offlinemanager.store(node, host, stanza); |
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251 -- TODO deal with storage errors |
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252 end |
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253 else |
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254 -- TODO send IQ error |
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255 end |
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256 else |
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257 -- User + resource is online... |
| 170 | 258 stanza.attr.to = res.full_jid; -- reset at the end of function |
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259 res.send(stanza); -- Yay \o/ |
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260 end |
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261 else |
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262 -- user not online |
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263 if user_exists(node, host) then |
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264 if stanza.name == "presence" then |
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265 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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266 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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267 else |
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268 -- TODO send unavailable presence or unsubscribed |
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269 end |
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270 elseif stanza.name == "message" then |
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271 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
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272 offlinemanager.store(node, host, stanza); |
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273 -- FIXME don't store messages with only chat state notifications |
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274 end |
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275 -- TODO allow configuration of offline storage |
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276 -- TODO send error if not storing offline |
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277 elseif stanza.name == "iq" then |
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278 -- TODO send IQ error |
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279 end |
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280 else -- user does not exist |
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281 -- 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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282 if stanza.name == "presence" then |
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283 if stanza.attr.type == "probe" then |
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284 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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285 end |
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286 -- else ignore |
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287 else |
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288 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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289 end |
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290 end |
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291 end |
| 148 | 292 elseif origin.type == "c2s" then |
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293 -- Remote host |
| 170 | 294 local xmlns = stanza.attr.xmlns; |
| 148 | 295 --stanza.attr.xmlns = "jabber:server"; |
| 296 stanza.attr.xmlns = nil; | |
| 146 | 297 log("debug", "sending s2s stanza: %s", tostring(stanza)); |
| 170 | 298 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
| 299 stanza.attr.xmlns = xmlns; -- reset | |
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300 elseif origin.type == "component" or origin.type == "local" then |
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301 -- Route via s2s for components and modules |
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302 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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303 for k,v in pairs(origin) do print("origin:", tostring(k), tostring(v)); end |
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304 print(tostring(host), tostring(from_host)) |
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305 send_s2s(origin.host, host, stanza); |
| 148 | 306 else |
| 307 log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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308 end |
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309 stanza.attr.to = to; -- reset |
| 30 | 310 end |
| 311 | |
| 312 function handle_stanza_toremote(stanza) | |
| 313 log("error", "Stanza bound for remote host, but s2s is not implemented"); | |
| 314 end | |
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315 |
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316 |
