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annotate mod_external_services/mod_external_services.lua @ 4362:116c88c28532

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mod_http_admin_api: restructure group-related info in API - Return the members of the group right in the get_group_by_id call. This is an O(1) of extra work. - Remove the groups attribute from get_user_by_name as that is O(n) of work and rarely immediately needed. The replacement for the group membership information in the user is for now to use the group API and iterate; future work may fix that.
author Jonas Schäfer <jonas@wielicki.name>
date Wed, 20 Jan 2021 15:30:29 +0100
parents 4841cf3fded5
children f0ffa8cf3ce6
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rev   line source
4075
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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 services = configured_services / prepare;
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104 if #services == 0 then
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105 module:log("warn", "No services configured or all had errors");
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106 end
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107 end
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108
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109 -- Ensure only valid items are added in events
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110 local services_mt = {
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111 __index = getmetatable(array()).__index;
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112 __newindex = function (self, i, v)
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113 rawset(self, i, assert(prepare(v), "Invalid service entry added"));
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114 end;
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115 }
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116
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117 local function handle_services(event)
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118 local origin, stanza = event.origin, event.stanza;
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119 local action = stanza.tags[1];
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120
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121 local user_bare = jid.bare(stanza.attr.from);
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122 local user_host = jid.host(user_bare);
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123 if not ((access:empty() and origin.type == "c2s") or access:contains(user_bare) or access:contains(user_host)) then
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124 origin.send(st.error_reply(stanza, "auth", "forbidden"));
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125 return true;
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126 end
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127
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128 local reply = st.reply(stanza):tag("services", { xmlns = action.attr.xmlns });
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129 local extras = module:get_host_items("external_service");
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130 local services = ( configured_services + extras ) / prepare;
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131
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132 local requested_type = action.attr.type;
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133 if requested_type then
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134 services:filter(function(item)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
135 return item.type == requested_type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
136 end);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
137 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
138
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
139 setmetatable(services, services_mt);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
140
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
141 module:fire_event("external_service/services", {
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
142 origin = origin;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 stanza = stanza;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
144 reply = reply;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
145 requested_type = requested_type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
146 services = services;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
147 });
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
148
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
149 for _, srv in ipairs(services) do
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
150 reply:tag("service", {
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
151 type = srv.type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
152 transport = srv.transport;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
153 host = srv.host;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
154 port = srv.port and string.format("%d", srv.port) or nil;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
155 username = srv.username;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
156 password = srv.password;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
157 expires = srv.expires and dt.datetime(srv.expires) or nil;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
158 restricted = srv.restricted and "1" or nil;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
159 }):up();
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
161
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
162 origin.send(reply);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
163 return true;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
164 end
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Kim Alvefur <zash@zash.se>
parents:
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165
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Kim Alvefur <zash@zash.se>
parents:
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166 local function handle_credentials(event)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 local origin, stanza = event.origin, event.stanza;
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Kim Alvefur <zash@zash.se>
parents:
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168 local action = stanza.tags[1];
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Kim Alvefur <zash@zash.se>
parents:
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169
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Kim Alvefur <zash@zash.se>
parents:
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170 if origin.type ~= "c2s" then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 origin.send(st.error_reply(stanza, "auth", "forbidden"));
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Kim Alvefur <zash@zash.se>
parents:
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172 return true;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
173 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
174
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
175 local reply = st.reply(stanza):tag("credentials", { xmlns = action.attr.xmlns });
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Kim Alvefur <zash@zash.se>
parents:
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176 local extras = module:get_host_items("external_service");
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Kim Alvefur <zash@zash.se>
parents:
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177 local services = ( configured_services + extras ) / prepare;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 services:filter(function (item)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
179 return item.restricted;
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Kim Alvefur <zash@zash.se>
parents:
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180 end)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
181
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Kim Alvefur <zash@zash.se>
parents:
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182 local requested_credentials = {};
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
183 for service in action:childtags("service") do
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
184 table.insert(requested_credentials, {
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
185 type = service.attr.type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
186 host = service.attr.host;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
187 port = tonumber(service.attr.port);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
188 });
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
189 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
190
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 setmetatable(services, services_mt);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
192 setmetatable(requested_credentials, services_mt);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
193
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 module:fire_event("external_service/credentials", {
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 origin = origin;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
196 stanza = stanza;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
197 reply = reply;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
198 requested_credentials = requested_credentials;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
199 services = services;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
200 });
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
201
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 for req_srv in action:childtags("service") do
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203 for _, srv in ipairs(services) do
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
204 if srv.type == req_srv.attr.type and srv.host == req_srv.attr.host
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
205 and not req_srv.attr.port or srv.port == tonumber(req_srv.attr.port) then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
206 reply:tag("service", {
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
207 type = srv.type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
208 transport = srv.transport;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
209 host = srv.host;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
210 port = srv.port and string.format("%d", srv.port) or nil;
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
211 username = srv.username;
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
212 password = srv.password;
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 expires = srv.expires and dt.datetime(srv.expires) or nil;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
214 restricted = srv.restricted and "1" or nil;
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 }):up();
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216 end
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 end
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 end
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 origin.send(reply);
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
221 return true;
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
222 end
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
223
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
224 -- XEP-0215 v0.7
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
225 module:add_feature("urn:xmpp:extdisco:2");
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
226 module:hook("iq-get/host/urn:xmpp:extdisco:2:services", handle_services);
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
227 module:hook("iq-get/host/urn:xmpp:extdisco:2:credentials", handle_credentials);
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
228
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
229 -- COMPAT XEP-0215 v0.6
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
230 -- Those still on the old version gets to deal with undefined attributes until they upgrade.
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
231 module:add_feature("urn:xmpp:extdisco:1");
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
232 module:hook("iq-get/host/urn:xmpp:extdisco:1:services", handle_services);
4841cf3fded5 mod_external_service: Include for users of older versions of Prosody
Kim Alvefur <zash@zash.se>
parents:
diff changeset
233 module:hook("iq-get/host/urn:xmpp:extdisco:1:credentials", handle_credentials);