prosody
b92a3e166ac3
plugins/mod_external_services.lua

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plugins/mod_external_services.lua @ 11666:b92a3e166ac3

scansion tests: Allow specifying network backend via environment variable To make it easier to test select and event without having to edit the config file, e.g. in CI. make integration-test PROSODY_NETWORK_BACKEND=event
author Kim Alvefur <zash@zash.se>
date Sun, 11 Jul 2021 10:09:07 +0200
parent 11628:0807e835d3b5
child 11753:c4599a7c534c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
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1
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2 local dt = require "util.datetime";
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3 local base64 = require "util.encodings".base64;
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4 local hashes = require "util.hashes";
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5 local st = require "util.stanza";
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6 local jid = require "util.jid";
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7 local array = require "util.array";
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8
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9 local default_host = module:get_option_string("external_service_host", module.host);
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10 local default_port = module:get_option_number("external_service_port");
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11 local default_secret = module:get_option_string("external_service_secret");
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12 local default_ttl = module:get_option_number("external_service_ttl", 86400);
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13
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14 local configured_services = module:get_option_array("external_services", {});
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15
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16 local access = module:get_option_set("external_service_access", {});
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17
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18 -- https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00
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19 local function behave_turn_rest_credentials(srv, item, secret)
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20 local ttl = default_ttl;
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21 if type(item.ttl) == "number" then
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22 ttl = item.ttl;
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23 end
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24 local expires = srv.expires or os.time() + ttl;
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25 local username;
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26 if type(item.username) == "string" then
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27 username = string.format("%d:%s", expires, item.username);
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28 else
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29 username = string.format("%d", expires);
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30 end
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31 srv.username = username;
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32 srv.password = base64.encode(hashes.hmac_sha1(secret, srv.username));
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33 end
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34
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35 local algorithms = {
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36 turn = behave_turn_rest_credentials;
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37 }
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38
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39 -- filter config into well-defined service records
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40 local function prepare(item)
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41 if type(item) ~= "table" then
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42 module:log("error", "Service definition is not a table: %q", item);
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43 return nil;
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44 end
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45
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46 local srv = {
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47 type = nil;
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48 transport = nil;
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49 host = default_host;
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50 port = default_port;
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51 username = nil;
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52 password = nil;
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53 restricted = nil;
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54 expires = nil;
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55 };
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56
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57 if type(item.type) == "string" then
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58 srv.type = item.type;
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59 else
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60 module:log("error", "Service missing mandatory 'type' field: %q", item);
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61 return nil;
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62 end
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63 if type(item.transport) == "string" then
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64 srv.transport = item.transport;
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65 end
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66 if type(item.host) == "string" then
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67 srv.host = item.host;
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68 end
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69 if type(item.port) == "number" then
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70 srv.port = item.port;
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71 end
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72 if type(item.username) == "string" then
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73 srv.username = item.username;
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74 end
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75 if type(item.password) == "string" then
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76 srv.password = item.password;
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77 srv.restricted = true;
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78 end
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79 if item.restricted == true then
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80 srv.restricted = true;
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81 end
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82 if type(item.expires) == "number" then
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83 srv.expires = item.expires;
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84 elseif type(item.ttl) == "number" then
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85 srv.expires = os.time() + item.ttl;
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86 end
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87 if (item.secret == true and default_secret) or type(item.secret) == "string" then
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88 local secret_cb = item.credentials_cb or algorithms[item.algorithm] or algorithms[srv.type];
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89 local secret = item.secret;
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90 if secret == true then
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91 secret = default_secret;
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92 end
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93 if secret_cb then
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94 secret_cb(srv, item, secret);
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95 srv.restricted = true;
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96 end
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97 end
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98 return srv;
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99 end
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100
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101 function module.load()
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102 -- Trigger errors on startup
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103 local extras = module:get_host_items("external_service");
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104 local services = ( configured_services + extras ) / prepare;
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105 if #services == 0 then
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106 module:set_status("warn", "No services configured or all had errors");
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107 end
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108 end
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109
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110 module:handle_items("external_service", function(added)
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111 if prepare(added.item) then
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112 module:set_status("core", "OK");
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113 end
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114 end, module.load);
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115
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116 -- Ensure only valid items are added in events
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117 local services_mt = {
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118 __index = getmetatable(array()).__index;
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119 __newindex = function (self, i, v)
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120 rawset(self, i, assert(prepare(v), "Invalid service entry added"));
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121 end;
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122 }
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123
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124 local function handle_services(event)
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125 local origin, stanza = event.origin, event.stanza;
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126 local action = stanza.tags[1];
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127
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128 local user_bare = jid.bare(stanza.attr.from);
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129 local user_host = jid.host(user_bare);
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130 if not ((access:empty() and origin.type == "c2s") or access:contains(user_bare) or access:contains(user_host)) then
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parents:
diff changeset
131 origin.send(st.error_reply(stanza, "auth", "forbidden"));
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
132 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
133 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
134
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
135 local reply = st.reply(stanza):tag("services", { xmlns = action.attr.xmlns });
11037
936ee55e1ae3 mod_external_services: Support adding services via items API
Kim Alvefur <zash@zash.se>
parents: 11036
diff changeset
136 local extras = module:get_host_items("external_service");
936ee55e1ae3 mod_external_services: Support adding services via items API
Kim Alvefur <zash@zash.se>
parents: 11036
diff changeset
137 local services = ( configured_services + extras ) / prepare;
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
138
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
139 local requested_type = action.attr.type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
140 if requested_type then
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
141 services:filter(function(item)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
142 return item.type == requested_type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 end);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
144 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
145
11040
c560531d9a6e mod_external_services: Validate services added via events
Kim Alvefur <zash@zash.se>
parents: 11039
diff changeset
146 setmetatable(services, services_mt);
c560531d9a6e mod_external_services: Validate services added via events
Kim Alvefur <zash@zash.se>
parents: 11039
diff changeset
147
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
148 module:fire_event("external_service/services", {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
149 origin = origin;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
150 stanza = stanza;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
151 reply = reply;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
152 requested_type = requested_type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
153 services = services;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
154 });
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
155
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
156 for _, srv in ipairs(services) do
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
157 reply:tag("service", {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
158 type = srv.type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
159 transport = srv.transport;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 host = srv.host;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
161 port = srv.port and string.format("%d", srv.port) or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
162 username = srv.username;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
163 password = srv.password;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
164 expires = srv.expires and dt.datetime(srv.expires) or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
165 restricted = srv.restricted and "1" or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
166 }):up();
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
168
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
169 origin.send(reply);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
170 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
172
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
173 local function handle_credentials(event)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 local origin, stanza = event.origin, event.stanza;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
175 local action = stanza.tags[1];
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
176
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177 if origin.type ~= "c2s" then
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 origin.send(st.error_reply(stanza, "auth", "forbidden"));
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
179 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
180 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
181
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
182 local reply = st.reply(stanza):tag("credentials", { xmlns = action.attr.xmlns });
11037
936ee55e1ae3 mod_external_services: Support adding services via items API
Kim Alvefur <zash@zash.se>
parents: 11036
diff changeset
183 local extras = module:get_host_items("external_service");
936ee55e1ae3 mod_external_services: Support adding services via items API
Kim Alvefur <zash@zash.se>
parents: 11036
diff changeset
184 local services = ( configured_services + extras ) / prepare;
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
185 services:filter(function (item)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
186 return item.restricted;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
187 end)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
188
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
189 local requested_credentials = {};
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
190 for service in action:childtags("service") do
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 table.insert(requested_credentials, {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
192 type = service.attr.type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
193 host = service.attr.host;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 port = tonumber(service.attr.port);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 });
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
196 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
197
11040
c560531d9a6e mod_external_services: Validate services added via events
Kim Alvefur <zash@zash.se>
parents: 11039
diff changeset
198 setmetatable(services, services_mt);
c560531d9a6e mod_external_services: Validate services added via events
Kim Alvefur <zash@zash.se>
parents: 11039
diff changeset
199 setmetatable(requested_credentials, services_mt);
c560531d9a6e mod_external_services: Validate services added via events
Kim Alvefur <zash@zash.se>
parents: 11039
diff changeset
200
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 module:fire_event("external_service/credentials", {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 origin = origin;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203 stanza = stanza;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
204 reply = reply;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
205 requested_credentials = requested_credentials;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
206 services = services;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
207 });
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
208
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
209 for req_srv in action:childtags("service") do
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
210 for _, srv in ipairs(services) do
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
211 if srv.type == req_srv.attr.type and srv.host == req_srv.attr.host
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
212 and not req_srv.attr.port or srv.port == tonumber(req_srv.attr.port) then
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 reply:tag("service", {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
214 type = srv.type;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 transport = srv.transport;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216 host = srv.host;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 port = srv.port and string.format("%d", srv.port) or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 username = srv.username;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219 password = srv.password;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 expires = srv.expires and dt.datetime(srv.expires) or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
221 restricted = srv.restricted and "1" or nil;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
222 }):up();
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
223 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
224 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
225 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
226
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
227 origin.send(reply);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
228 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
229 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
230
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
231 -- XEP-0215 v0.7
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
232 module:add_feature("urn:xmpp:extdisco:2");
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
233 module:hook("iq-get/host/urn:xmpp:extdisco:2:services", handle_services);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
234 module:hook("iq-get/host/urn:xmpp:extdisco:2:credentials", handle_credentials);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
235
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
236 -- COMPAT XEP-0215 v0.6
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
237 -- Those still on the old version gets to deal with undefined attributes until they upgrade.
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
238 module:add_feature("urn:xmpp:extdisco:1");
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
239 module:hook("iq-get/host/urn:xmpp:extdisco:1:services", handle_services);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
240 module:hook("iq-get/host/urn:xmpp:extdisco:1:credentials", handle_credentials);