author | Kim Alvefur <zash@zash.se> |
Sat, 25 Jan 2020 01:31:49 +0100 | |
changeset 3861 | 8752e5b5dd08 |
parent 3479 | 820c891a54cc |
child 4022 | f27becd421bd |
permissions | -rw-r--r-- |
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0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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1 |
local st_iq = require "util.stanza".iq; |
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mod_cache_c2s_caps: New module caching capabilities from local clients
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2 |
local uuid_gen = require "util.uuid".generate; |
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mod_cache_c2s_caps: New module caching capabilities from local clients
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local calculate_hash = require "util.caps".calculate_hash; |
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|
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-- Map of jid..node, to avoid querying the same client multiple times for the same value. |
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6 |
local in_flight_iqs = {} |
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|
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8 |
-- Some clients (*ahem* poezio…) don’t include the @node in their result iq. |
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parents:
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9 |
local iq_node_map = {} |
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|
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13b394b0db82
mod_cache_c2s_caps: Fail to load if module:send_iq() is not available
Matthew Wild <mwild1@gmail.com>
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11 |
assert(module.send_iq, "This module is not compatible with this version of Prosody."); |
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local function iq_result_handler(event) |
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14 |
local origin, stanza = event.origin, event.stanza; |
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mod_cache_c2s_caps: Fix traceback on invalid payload in disco#info result.
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|
7a3ac037e57f
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local query = stanza:get_child("query", "http://jabber.org/protocol/disco#info"); |
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if not query then |
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origin.log("debug", "Wrong iq payload in disco#info result: %s", stanza); |
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mod_cache_c2s_caps: Unset the caps_cache also on errors due to the result validation.
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origin.caps_cache = nil; |
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20 |
return; |
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mod_cache_c2s_caps: Fix traceback on invalid payload in disco#info result.
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21 |
end |
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mod_cache_c2s_caps: Fix traceback on invalid payload in disco#info result.
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parents:
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local from = stanza.attr.from; |
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local id = stanza.attr.id; |
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local node_string = query.attr.node; |
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local node_query = iq_node_map[from..id]; |
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if node_string == nil then |
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node_string = node_query; |
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query.attr.node = node_query; |
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end |
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iq_node_map[from..id] = nil; |
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if node_string ~= node_query then |
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mod_cache_c2s_caps: Switch to origin.log to provide better debug to admins.
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origin.log("debug", "Wrong node for our disco#info query, expected %s, received %s", node_string, node_query); |
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b85622b577ad
mod_cache_c2s_caps: Unset the caps_cache also on errors due to the result validation.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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35 |
origin.caps_cache = nil; |
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36 |
return; |
0273d7583373
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37 |
end |
0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
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38 |
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mod_cache_c2s_caps: New module caching capabilities from local clients
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39 |
local node, ver = node_query:match("([^#]+)#([^#]+)"); |
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40 |
local hash = calculate_hash(query) |
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if ver ~= hash then |
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42 |
origin.log("debug", "Wrong hash for disco#info: %s ~= %s", ver, hash); |
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mod_cache_c2s_caps: Unset the caps_cache also on errors due to the result validation.
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origin.caps_cache = nil; |
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1ef702d30b6b
mod_cache_c2s_caps: Add a missing return when the hash is wrong.
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44 |
return; |
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45 |
end |
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mod_cache_c2s_caps: New module caching capabilities from local clients
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origin.caps_cache = query; |
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origin.log("info", "Stored caps %s", ver); |
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module:fire_event("c2s-capabilities-changed", { origin = origin }); |
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return true; |
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51 |
end |
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|
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local function iq_error_handler(err) |
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local origin = err.context.origin; |
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if origin ~= nil then |
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origin.caps_cache = nil; |
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module:fire_event("c2s-capabilities-changed", { origin = origin }); |
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end |
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end |
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local function presence_stanza_handler(event) |
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local origin, stanza = event.origin, event.stanza; |
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|
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local from = stanza.attr.from; |
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65 |
if stanza.attr.to ~= nil then |
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66 |
return; |
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67 |
end |
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|
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local caps = stanza:get_child("c", "http://jabber.org/protocol/caps"); |
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if caps == nil then |
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origin.log("debug", "Presence without caps received, skipping"); |
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return; |
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73 |
end |
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|
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75 |
local hash = caps.attr.hash; |
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76 |
local node = caps.attr.node; |
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local ver = caps.attr.ver; |
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78 |
if not hash or not node or not ver then |
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79 |
return; |
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80 |
end |
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81 |
if hash ~= "sha-1" then |
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82 |
origin.log("warn", "Non-SHA-1 caps received: %s", hash); |
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83 |
return; |
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84 |
end |
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85 |
|
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86 |
local node_query = node.."#"..ver; |
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87 |
if (origin.caps_cache and origin.caps_cache.attr.node == node_query) or in_flight_iqs[from..node_query] ~= nil then |
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origin.log("debug", "Already requested these caps, skipping"); |
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89 |
return; |
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90 |
end |
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|
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origin.log("debug", "Received presence with SHA-1 caps %s, querying disco#info", node_query); |
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local id = uuid_gen(); |
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iq_node_map[from..id] = node_query |
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96 |
local iq = st_iq({ type = "get", from = module.host, to = from, id = id }) |
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97 |
:tag("query", { xmlns = "http://jabber.org/protocol/disco#info", node = node_query }); |
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98 |
in_flight_iqs[from..node_query] = true; |
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99 |
module:send_iq(iq, origin) |
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100 |
:next(iq_result_handler, iq_error_handler) |
c424bfb927b1
mod_cache_c2s_caps: Switch to the new module:send_iq() API.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
3115
diff
changeset
|
101 |
:finally(function () in_flight_iqs[from..node_query] = nil; end) |
2903
0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff
changeset
|
102 |
end |
0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff
changeset
|
103 |
|
0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff
changeset
|
104 |
-- Handle only non-directed presences for now. |
0273d7583373
mod_cache_c2s_caps: New module caching capabilities from local clients
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff
changeset
|
105 |
module:hook("pre-presence/bare", presence_stanza_handler); |