prosody-modules
f49359330493
mod_delegation/mod_delegation.lua
Software / code / prosody-modules
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mod_delegation/mod_delegation.lua @ 1721:f49359330493
mod_delegation: handling of error replies from managing entities after forward.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 03 May 2015 17:50:16 +0200 |
| parent | 1720:48b7e8021afa |
| child | 1722:c48c7f948cfb |
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| 1720:48b7e8021afa | 1721:f49359330493 |
|---|---|
| 5 -- COPYING file in the source package for more information. | 5 -- COPYING file in the source package for more information. |
| 6 | 6 |
| 7 -- This module manage namespace delegation, a way to delegate server features | 7 -- This module manage namespace delegation, a way to delegate server features |
| 8 -- to an external entity/component. Only the admin mode is implemented so far | 8 -- to an external entity/component. Only the admin mode is implemented so far |
| 9 | 9 |
| 10 -- TODO: client mode, managing entity error handling, disco extensions (XEP-0128) | 10 -- TODO: client mode |
| 11 | 11 |
| 12 local jid = require("util/jid") | 12 local jid = require("util/jid") |
| 13 local st = require("util/stanza") | 13 local st = require("util/stanza") |
| 14 local set = require("util/set") | 14 local set = require("util/set") |
| 15 | 15 |
| 148 module:hook('presence/initial', on_presence) | 148 module:hook('presence/initial', on_presence) |
| 149 | 149 |
| 150 | 150 |
| 151 --> delegated namespaces hook <-- | 151 --> delegated namespaces hook <-- |
| 152 | 152 |
| 153 local managing_ent_error | |
| 153 local stanza_cache = {} -- we cache original stanza to build reply | 154 local stanza_cache = {} -- we cache original stanza to build reply |
| 155 | |
| 154 local function managing_ent_result(event) | 156 local function managing_ent_result(event) |
| 155 -- this function manage iq results from the managing entity | 157 -- this function manage iq results from the managing entity |
| 156 -- it do a couple of security check before sending the | 158 -- it do a couple of security check before sending the |
| 157 -- result to the managed entity | 159 -- result to the managed entity |
| 158 local stanza = event.stanza | 160 local stanza = event.stanza |
| 159 if stanza.attr.to ~= module.host then | 161 if stanza.attr.to ~= module.host then |
| 160 module:log("warn", 'forwarded stanza result has "to" attribute not addressed to current host, id conflict ?') | 162 module:log("warn", 'forwarded stanza result has "to" attribute not addressed to current host, id conflict ?') |
| 161 return | 163 return |
| 162 end | 164 end |
| 163 module:unhook("iq-result/host/"..stanza.attr.id, managing_ent_result) | 165 module:unhook("iq-result/host/"..stanza.attr.id, managing_ent_result) |
| 166 module:unhook("iq-error/host/"..stanza.attr.id, managing_ent_error) | |
| 164 | 167 |
| 165 -- lot of checks to do... | 168 -- lot of checks to do... |
| 166 local delegation = stanza.tags[1] | 169 local delegation = stanza.tags[1] |
| 167 if #stanza ~= 1 or delegation.name ~= "delegation" or | 170 if #stanza ~= 1 or delegation.name ~= "delegation" or |
| 168 delegation.attr.xmlns ~= _DELEGATION_NS then | 171 delegation.attr.xmlns ~= _DELEGATION_NS then |
| 199 end | 202 end |
| 200 | 203 |
| 201 -- at this point eveything is checked, | 204 -- at this point eveything is checked, |
| 202 -- and we (hopefully) can send the the result safely | 205 -- and we (hopefully) can send the the result safely |
| 203 module:send(iq) | 206 module:send(iq) |
| 207 end | |
| 208 | |
| 209 function managing_ent_error(event) | |
| 210 local stanza = event.stanza | |
| 211 if stanza.attr.to ~= module.host then | |
| 212 module:log("warn", 'Stanza result has "to" attribute not addressed to current host, id conflict ?') | |
| 213 return | |
| 214 end | |
| 215 module:unhook("iq-result/host/"..stanza.attr.id, managing_ent_result) | |
| 216 module:unhook("iq-error/host/"..stanza.attr.id, managing_ent_error) | |
| 217 local original = stanza_cache[stanza.attr.from][stanza.attr.id] | |
| 218 stanza_cache[stanza.attr.from][stanza.attr.id] = nil | |
| 219 module:log("warn", "Got an error after forwarding stanza to "..stanza.attr.from) | |
| 220 module:send(st.error_reply(original, 'cancel', 'service-unavailable')) | |
| 204 end | 221 end |
| 205 | 222 |
| 206 local function forward_iq(stanza, ns_data) | 223 local function forward_iq(stanza, ns_data) |
| 207 local to_jid = ns_data.connected | 224 local to_jid = ns_data.connected |
| 208 local iq_stanza = st.iq({ from=module.host, to=to_jid, type="set" }) | 225 local iq_stanza = st.iq({ from=module.host, to=to_jid, type="set" }) |
| 212 local iq_id = iq_stanza.attr.id | 229 local iq_id = iq_stanza.attr.id |
| 213 -- we save the original stanza to check the managing entity result | 230 -- we save the original stanza to check the managing entity result |
| 214 if not stanza_cache[to_jid] then stanza_cache[to_jid] = {} end | 231 if not stanza_cache[to_jid] then stanza_cache[to_jid] = {} end |
| 215 stanza_cache[to_jid][iq_id] = stanza | 232 stanza_cache[to_jid][iq_id] = stanza |
| 216 module:hook("iq-result/host/"..iq_id, managing_ent_result) | 233 module:hook("iq-result/host/"..iq_id, managing_ent_result) |
| 234 module:hook("iq-error/host/"..iq_id, managing_ent_error) | |
| 235 module:log("debug", "stanza forwarded") | |
| 217 module:send(iq_stanza) | 236 module:send(iq_stanza) |
| 218 end | 237 end |
| 219 | 238 |
| 220 local function iq_hook(event) | 239 local function iq_hook(event) |
| 221 -- general hook for all the iq which forward delegated ones | 240 -- general hook for all the iq which forward delegated ones |
