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util/pubsub.lua @ 6719:0ef7a8c8fe8c
loggingmanager: Rename function arguments to avoid name conflict [luacheck] (core/ is now luacheck-clean!)
author | Matthew Wild <mwild1@gmail.com> |
---|---|
date | Mon, 18 May 2015 19:09:07 +0100 |
parent | 6515:c9a72c64c3e2 |
child | 6516:ecd8d6437053 |
child | 6777:5de6b93d0190 |
rev | line source |
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1 local events = require "util.events"; |
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2 local t_remove = table.remove; |
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3 |
3619 | 4 module("pubsub", package.seeall); |
5 | |
6 local service = {}; | |
7 local service_mt = { __index = service }; | |
8 | |
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9 local default_config = { __index = { |
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10 broadcaster = function () end; |
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11 get_affiliation = function () end; |
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12 capabilities = {}; |
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13 } }; |
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14 local default_node_config = { __index = { |
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15 ["pubsub#max_items"] = "20"; |
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16 } }; |
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17 |
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18 function new(config) |
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util.pubsub: Modify new() to take a config, and add a default config via a metatable
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19 config = config or {}; |
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util.pubsub: Modify new() to take a config, and add a default config via a metatable
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20 return setmetatable({ |
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21 config = setmetatable(config, default_config); |
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22 node_defaults = setmetatable(config.node_defaults or {}, default_node_config); |
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23 affiliations = {}; |
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24 subscriptions = {}; |
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25 nodes = {}; |
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26 data = {}; |
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27 events = events.new(); |
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28 }, service_mt); |
3619 | 29 end |
30 | |
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31 function service:jids_equal(jid1, jid2) |
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32 local normalize = self.config.normalize_jid; |
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33 return normalize(jid1) == normalize(jid2); |
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34 end |
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35 |
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36 function service:may(node, actor, action) |
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37 if actor == true then return true; end |
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38 |
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39 local node_obj = self.nodes[node]; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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40 local node_aff = node_obj and node_obj.affiliations[actor]; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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41 local service_aff = self.affiliations[actor] |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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42 or self.config.get_affiliation(actor, node, action) |
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43 or "none"; |
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44 |
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45 -- Check if node allows/forbids it |
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46 local node_capabilities = node_obj and node_obj.capabilities; |
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47 if node_capabilities then |
80fe910f912a
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48 local caps = node_capabilities[node_aff or service_aff]; |
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49 if caps then |
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50 local can = caps[action]; |
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51 if can ~= nil then |
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52 return can; |
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53 end |
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54 end |
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55 end |
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56 |
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57 -- Check service-wide capabilities instead |
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58 local service_capabilities = self.config.capabilities; |
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59 local caps = service_capabilities[node_aff or service_aff]; |
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60 if caps then |
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61 local can = caps[action]; |
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62 if can ~= nil then |
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63 return can; |
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64 end |
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65 end |
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66 |
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67 return false; |
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68 end |
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69 |
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70 function service:set_affiliation(node, actor, jid, affiliation) |
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71 -- Access checking |
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72 if not self:may(node, actor, "set_affiliation") then |
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73 return false, "forbidden"; |
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74 end |
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75 -- |
3619 | 76 local node_obj = self.nodes[node]; |
77 if not node_obj then | |
78 return false, "item-not-found"; | |
79 end | |
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80 node_obj.affiliations[jid] = affiliation; |
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81 local _, jid_sub = self:get_subscription(node, true, jid); |
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82 if not jid_sub and not self:may(node, jid, "be_unsubscribed") then |
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83 local ok, err = self:add_subscription(node, true, jid); |
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84 if not ok then |
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85 return ok, err; |
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86 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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87 elseif jid_sub and not self:may(node, jid, "be_subscribed") then |
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88 local ok, err = self:add_subscription(node, true, jid); |
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89 if not ok then |
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90 return ok, err; |
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91 end |
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parents:
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|
92 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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93 return true; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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diff
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|
94 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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|
95 |
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96 function service:add_subscription(node, actor, jid, options) |
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97 -- Access checking |
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98 local cap; |
4100
69e3f1e7111e
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99 if actor == true or jid == actor or self:jids_equal(actor, jid) then |
3910
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|
100 cap = "subscribe"; |
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101 else |
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102 cap = "subscribe_other"; |
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103 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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104 if not self:may(node, actor, cap) then |
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105 return false, "forbidden"; |
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|
106 end |
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107 if not self:may(node, jid, "be_subscribed") then |
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108 return false, "forbidden"; |
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109 end |
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110 -- |
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111 local node_obj = self.nodes[node]; |
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112 if not node_obj then |
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113 if not self.config.autocreate_on_subscribe then |
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114 return false, "item-not-found"; |
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115 else |
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116 local ok, err = self:create(node, true); |
3910
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117 if not ok then |
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118 return ok, err; |
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119 end |
3936
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120 node_obj = self.nodes[node]; |
3910
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121 end |
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122 end |
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123 node_obj.subscribers[jid] = options or true; |
3938
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124 local normal_jid = self.config.normalize_jid(jid); |
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125 local subs = self.subscriptions[normal_jid]; |
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126 if subs then |
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127 if not subs[jid] then |
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128 subs[jid] = { [node] = true }; |
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129 else |
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130 subs[jid][node] = true; |
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131 end |
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132 else |
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133 self.subscriptions[normal_jid] = { [jid] = { [node] = true } }; |
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134 end |
4365
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135 self.events.fire_event("subscription-added", { node = node, jid = jid, normalized_jid = normal_jid, options = options }); |
3619 | 136 return true; |
137 end | |
138 | |
139 function service:remove_subscription(node, actor, jid) | |
3910
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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140 -- Access checking |
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141 local cap; |
4100
69e3f1e7111e
util.pubsub: Pass true instead of nil as the actor in a bunch of places, and fix a bunch of methods to not traceback on this (those with *_other capability checking).
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diff
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|
142 if actor == true or jid == actor or self:jids_equal(actor, jid) then |
3910
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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diff
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|
143 cap = "unsubscribe"; |
80fe910f912a
util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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144 else |
80fe910f912a
util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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diff
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|
145 cap = "unsubscribe_other"; |
80fe910f912a
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parents:
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diff
changeset
|
146 end |
80fe910f912a
util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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|
147 if not self:may(node, actor, cap) then |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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148 return false, "forbidden"; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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diff
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|
149 end |
80fe910f912a
util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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150 if not self:may(node, jid, "be_unsubscribed") then |
80fe910f912a
util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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151 return false, "forbidden"; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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|
152 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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diff
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|
153 -- |
3698
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154 local node_obj = self.nodes[node]; |
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155 if not node_obj then |
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156 return false, "item-not-found"; |
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157 end |
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158 if not node_obj.subscribers[jid] then |
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159 return false, "not-subscribed"; |
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160 end |
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161 node_obj.subscribers[jid] = nil; |
3938
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162 local normal_jid = self.config.normalize_jid(jid); |
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163 local subs = self.subscriptions[normal_jid]; |
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164 if subs then |
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165 local jid_subs = subs[jid]; |
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166 if jid_subs then |
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167 jid_subs[node] = nil; |
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168 if next(jid_subs) == nil then |
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169 subs[jid] = nil; |
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170 end |
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171 end |
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172 if next(subs) == nil then |
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|
173 self.subscriptions[normal_jid] = nil; |
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174 end |
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175 end |
4365
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|
176 self.events.fire_event("subscription-removed", { node = node, jid = jid, normalized_jid = normal_jid }); |
3619 | 177 return true; |
178 end | |
179 | |
4366
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|
180 function service:remove_all_subscriptions(actor, jid) |
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181 local normal_jid = self.config.normalize_jid(jid); |
b6c18cadd3ec
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diff
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182 local subs = self.subscriptions[normal_jid] |
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183 subs = subs and subs[jid]; |
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184 if subs then |
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185 for node in pairs(subs) do |
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186 self:remove_subscription(node, true, jid); |
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187 end |
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188 end |
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189 return true; |
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190 end |
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191 |
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192 function service:get_subscription(node, actor, jid) |
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193 -- Access checking |
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194 local cap; |
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195 if actor == true or jid == actor or self:jids_equal(actor, jid) then |
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196 cap = "get_subscription"; |
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197 else |
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198 cap = "get_subscription_other"; |
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199 end |
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200 if not self:may(node, actor, cap) then |
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201 return false, "forbidden"; |
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202 end |
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203 -- |
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204 local node_obj = self.nodes[node]; |
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205 if not node_obj then |
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206 return false, "item-not-found"; |
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207 end |
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208 return true, node_obj.subscribers[jid]; |
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209 end |
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210 |
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211 function service:create(node, actor, options) |
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212 -- Access checking |
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213 if not self:may(node, actor, "create") then |
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214 return false, "forbidden"; |
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215 end |
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216 -- |
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217 if self.nodes[node] then |
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218 return false, "conflict"; |
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219 end |
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220 |
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221 self.data[node] = {}; |
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222 self.nodes[node] = { |
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223 name = node; |
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224 subscribers = {}; |
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225 config = setmetatable(options or {}, {__index=self.node_defaults}); |
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226 affiliations = {}; |
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227 }; |
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228 setmetatable(self.nodes[node], { __index = { data = self.data[node] } }); -- COMPAT |
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229 self.events.fire_event("node-created", { node = node, actor = actor }); |
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230 local ok, err = self:set_affiliation(node, true, actor, "owner"); |
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231 if not ok then |
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232 self.nodes[node] = nil; |
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233 self.data[node] = nil; |
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234 end |
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235 return ok, err; |
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236 end |
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237 |
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238 function service:delete(node, actor) |
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239 -- Access checking |
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240 if not self:may(node, actor, "delete") then |
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241 return false, "forbidden"; |
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242 end |
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243 -- |
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244 local node_obj = self.nodes[node]; |
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245 if not node_obj then |
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246 return false, "item-not-found"; |
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247 end |
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248 self.nodes[node] = nil; |
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249 self.data[node] = nil; |
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250 self.events.fire_event("node-deleted", { node = node, actor = actor }); |
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251 self.config.broadcaster("delete", node, node_obj.subscribers); |
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252 return true; |
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253 end |
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254 |
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255 local function remove_item_by_id(data, id) |
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256 if not data[id] then return end |
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257 data[id] = nil; |
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258 for i, _id in ipairs(data) do |
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259 if id == _id then |
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260 t_remove(data, i); |
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261 return i; |
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262 end |
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263 end |
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264 end |
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265 |
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266 local function trim_items(data, max) |
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267 max = tonumber(max); |
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268 if not max or #data <= max then return end |
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269 repeat |
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270 data[t_remove(data, 1)] = nil; |
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271 until #data <= max |
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272 end |
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273 |
3619 | 274 function service:publish(node, actor, id, item) |
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275 -- Access checking |
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276 if not self:may(node, actor, "publish") then |
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277 return false, "forbidden"; |
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278 end |
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279 -- |
3619 | 280 local node_obj = self.nodes[node]; |
281 if not node_obj then | |
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282 if not self.config.autocreate_on_publish then |
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283 return false, "item-not-found"; |
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284 end |
4364
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285 local ok, err = self:create(node, true); |
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286 if not ok then |
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287 return ok, err; |
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288 end |
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289 node_obj = self.nodes[node]; |
3619 | 290 end |
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291 local node_data = self.data[node]; |
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292 remove_item_by_id(node_data, id); |
6435 | 293 node_data[#node_data + 1] = id; |
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294 node_data[id] = item; |
6439
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295 trim_items(node_data, node_obj.config["pubsub#max_items"]); |
5181
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296 self.events.fire_event("item-published", { node = node, actor = actor, id = id, item = item }); |
6515
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297 self.config.broadcaster("items", node, node_obj.subscribers, item, actor); |
3619 | 298 return true; |
299 end | |
300 | |
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301 function service:retract(node, actor, id, retract) |
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302 -- Access checking |
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303 if not self:may(node, actor, "retract") then |
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304 return false, "forbidden"; |
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305 end |
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306 -- |
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307 local node_obj = self.nodes[node]; |
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308 if (not node_obj) or (not self.data[node][id]) then |
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309 return false, "item-not-found"; |
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310 end |
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311 self.events.fire_event("item-retracted", { node = node, actor = actor, id = id }); |
5972
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312 remove_item_by_id(self.data[node], id); |
3699
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313 if retract then |
5312
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314 self.config.broadcaster("items", node, node_obj.subscribers, retract); |
3699
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315 end |
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316 return true |
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diff
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|
317 end |
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318 |
5312
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319 function service:purge(node, actor, notify) |
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320 -- Access checking |
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diff
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321 if not self:may(node, actor, "retract") then |
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322 return false, "forbidden"; |
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323 end |
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324 -- |
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325 local node_obj = self.nodes[node]; |
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326 if not node_obj then |
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327 return false, "item-not-found"; |
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diff
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328 end |
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329 self.data[node] = {}; -- Purge |
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330 self.events.fire_event("node-purged", { node = node, actor = actor }); |
5312
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331 if notify then |
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diff
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|
332 self.config.broadcaster("purge", node, node_obj.subscribers); |
fdcd2ac7c22d
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parents:
5305
diff
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|
333 end |
fdcd2ac7c22d
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diff
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|
334 return true |
5305
391b72fede9f
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Kim Alvefur <zash@zash.se>
parents:
5181
diff
changeset
|
335 end |
391b72fede9f
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diff
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|
336 |
3910
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337 function service:get_items(node, actor, id) |
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338 -- Access checking |
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339 if not self:may(node, actor, "get_items") then |
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diff
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|
340 return false, "forbidden"; |
80fe910f912a
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parents:
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diff
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341 end |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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|
342 -- |
3641
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diff
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|
343 local node_obj = self.nodes[node]; |
3910
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parents:
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344 if not node_obj then |
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parents:
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345 return false, "item-not-found"; |
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util.pubsub: Too many changes to list or split sensibly. Added access control to all methods, with capabilities support. Renamed get() -> get_items() and changed it to return true, result on success. Support for autocreate_on_subscribe and autocreate_on_publish config options.
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parents:
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346 end |
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|
347 if id then -- Restrict results to a single specific item |
5972
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348 return true, { id, [id] = self.data[node][id] }; |
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diff
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349 else |
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350 return true, self.data[node]; |
3641
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diff
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351 end |
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352 end |
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353 |
3759
1f7305784e12
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354 function service:get_nodes(actor) |
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355 -- Access checking |
3917
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diff
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|
356 if not self:may(nil, actor, "get_nodes") then |
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357 return false, "forbidden"; |
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358 end |
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359 -- |
3759
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360 return true, self.nodes; |
1f7305784e12
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361 end |
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362 |
3938
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363 function service:get_subscriptions(node, actor, jid) |
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364 -- Access checking |
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diff
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|
365 local cap; |
4100
69e3f1e7111e
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parents:
4099
diff
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|
366 if actor == true or jid == actor or self:jids_equal(actor, jid) then |
3938
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367 cap = "get_subscriptions"; |
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368 else |
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369 cap = "get_subscriptions_other"; |
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370 end |
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371 if not self:may(node, actor, cap) then |
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|
372 return false, "forbidden"; |
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373 end |
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374 -- |
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375 local node_obj; |
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376 if node then |
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377 node_obj = self.nodes[node]; |
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378 if not node_obj then |
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379 return false, "item-not-found"; |
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380 end |
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381 end |
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382 local normal_jid = self.config.normalize_jid(jid); |
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383 local subs = self.subscriptions[normal_jid]; |
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384 -- We return the subscription object from the node to save |
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385 -- a get_subscription() call for each node. |
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386 local ret = {}; |
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387 if subs then |
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388 for jid, subscribed_nodes in pairs(subs) do |
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389 if node then -- Return only subscriptions to this node |
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390 if subscribed_nodes[node] then |
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391 ret[#ret+1] = { |
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392 node = node; |
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393 jid = jid; |
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394 subscription = node_obj.subscribers[jid]; |
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395 }; |
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396 end |
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397 else -- Return subscriptions to all nodes |
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398 local nodes = self.nodes; |
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399 for subscribed_node in pairs(subscribed_nodes) do |
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400 ret[#ret+1] = { |
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401 node = subscribed_node; |
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402 jid = jid; |
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403 subscription = nodes[subscribed_node].subscribers[jid]; |
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404 }; |
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405 end |
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406 end |
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407 end |
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408 end |
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409 return true, ret; |
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410 end |
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411 |
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412 -- Access models only affect 'none' affiliation caps, service/default access level... |
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413 function service:set_node_capabilities(node, actor, capabilities) |
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414 -- Access checking |
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415 if not self:may(node, actor, "configure") then |
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416 return false, "forbidden"; |
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417 end |
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418 -- |
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419 local node_obj = self.nodes[node]; |
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420 if not node_obj then |
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421 return false, "item-not-found"; |
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422 end |
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423 node_obj.capabilities = capabilities; |
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424 return true; |
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425 end |
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426 |
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427 function service:set_node_config(node, actor, new_config) |
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428 if not self:may(node, actor, "configure") then |
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429 return false, "forbidden"; |
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430 end |
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431 |
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432 local node_obj = self.nodes[node]; |
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433 if not node_obj then |
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434 return false, "item-not-found"; |
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435 end |
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436 |
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437 for k,v in pairs(new_config) do |
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438 node_obj.config[k] = v; |
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439 end |
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440 trim_items(self.data[node], node_obj.config["pubsub#max_items"]); |
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441 |
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442 return true; |
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443 end |
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444 |
3619 | 445 return _M; |