prosody
ebe3b2f96cad
plugins/mod_external_services.lua

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plugins/mod_external_services.lua @ 12953:ebe3b2f96cad

mod_tokenauth: Switch to new token format (invalidates existing tokens!) The new format has the following properties: - 5 bytes longer than the previous format - The token now has separate 'id' and 'secret' parts - the token itself is no longer stored in the DB, and the secret part is hashed - The only variable length field (JID) has been moved to the end - The 'secret-token:' prefix (RFC 8959) is now included Compatibility with the old token format was not maintained, and all previously issued tokens are invalid after this commit (they will be removed from the DB if used).
author Matthew Wild <mwild1@gmail.com>
date Tue, 21 Mar 2023 14:33:29 +0000
parent 12685:4d75663d1552
child 12977:74b9e05af71e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
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1
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
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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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c560531d9a6e mod_external_services: Validate services added via events
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7 local array = require "util.array";
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21a9b3f2a728 mod_external_services: Filter services by requested credentials using a Set
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8 local set = require "util.set";
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9
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10 local default_host = module:get_option_string("external_service_host", module.host);
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11 local default_port = module:get_option_number("external_service_port");
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12 local default_secret = module:get_option_string("external_service_secret");
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13 local default_ttl = module:get_option_number("external_service_ttl", 86400);
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14
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15 local configured_services = module:get_option_array("external_services", {});
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16
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17 local access = module:get_option_set("external_service_access", {});
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18
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4d75663d1552 mod_external_services: Update tools.ietf.org URL
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19 -- https://datatracker.ietf.org/doc/html/draft-uberti-behave-turn-rest-00
11038
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20 local function behave_turn_rest_credentials(srv, item, secret)
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21 local ttl = default_ttl;
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22 if type(item.ttl) == "number" then
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23 ttl = item.ttl;
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24 end
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25 local expires = srv.expires or os.time() + ttl;
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26 local username;
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27 if type(item.username) == "string" then
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28 username = string.format("%d:%s", expires, item.username);
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29 else
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30 username = string.format("%d", expires);
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31 end
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32 srv.username = username;
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33 srv.password = base64.encode(hashes.hmac_sha1(secret, srv.username));
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34 end
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35
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36 local algorithms = {
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37 turn = behave_turn_rest_credentials;
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38 }
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39
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40 -- filter config into well-defined service records
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41 local function prepare(item)
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42 if type(item) ~= "table" then
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43 module:log("error", "Service definition is not a table: %q", item);
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44 return nil;
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45 end
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46
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47 local srv = {
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48 type = nil;
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49 transport = nil;
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50 host = default_host;
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51 port = default_port;
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52 username = nil;
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53 password = nil;
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54 restricted = nil;
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55 expires = nil;
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56 };
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57
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58 if type(item.type) == "string" then
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59 srv.type = item.type;
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60 else
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61 module:log("error", "Service missing mandatory 'type' field: %q", item);
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62 return nil;
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63 end
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64 if type(item.transport) == "string" then
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65 srv.transport = item.transport;
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66 else
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67 module:log("warn", "Service missing recommended 'transport' field: %q", item);
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68 end
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69 if type(item.host) == "string" then
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70 srv.host = item.host;
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71 end
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72 if type(item.port) == "number" then
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73 srv.port = item.port;
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74 elseif not srv.port then
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75 module:log("warn", "Service missing recommended 'port' field: %q", item);
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76 end
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77 if type(item.username) == "string" then
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78 srv.username = item.username;
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79 end
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80 if type(item.password) == "string" then
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81 srv.password = item.password;
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82 srv.restricted = true;
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83 end
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84 if item.restricted == true then
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85 srv.restricted = true;
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86 end
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87 if type(item.expires) == "number" then
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88 srv.expires = item.expires;
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89 elseif type(item.ttl) == "number" then
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90 srv.expires = os.time() + item.ttl;
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91 end
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92 if (item.secret == true and default_secret) or type(item.secret) == "string" then
11039
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93 local secret_cb = item.credentials_cb or algorithms[item.algorithm] or algorithms[srv.type];
11036
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94 local secret = item.secret;
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95 if secret == true then
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96 secret = default_secret;
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97 end
11038
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98 if secret_cb then
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99 secret_cb(srv, item, secret);
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100 srv.restricted = true;
11036
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101 end
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102 end
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103 return srv;
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104 end
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105
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106 function module.load()
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107 -- Trigger errors on startup
11626
ef62d29c8fdc mod_external_services: Also validate services added by other modules
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108 local extras = module:get_host_items("external_service");
ef62d29c8fdc mod_external_services: Also validate services added by other modules
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109 local services = ( configured_services + extras ) / prepare;
11036
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110 if #services == 0 then
11628
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111 module:set_status("warn", "No services configured or all had errors");
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
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112 end
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113 end
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114
11627
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115 module:handle_items("external_service", function(added)
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116 if prepare(added.item) then
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117 module:set_status("core", "OK");
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118 end
11627
3a5212fd7e8e mod_external_services: Validate items as they are added
Kim Alvefur <zash@zash.se>
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119 end, module.load);
3a5212fd7e8e mod_external_services: Validate items as they are added
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120
11040
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121 -- Ensure only valid items are added in events
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122 local services_mt = {
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123 __index = getmetatable(array()).__index;
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124 __newindex = function (self, i, v)
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125 rawset(self, i, assert(prepare(v), "Invalid service entry added"));
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126 end;
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127 }
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128
11755
ae565e49289a mod_external_services: Factor out public function returning current services
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129 function get_services()
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diff changeset
130 local extras = module:get_host_items("external_service");
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131 local services = ( configured_services + extras ) / prepare;
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diff changeset
132
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diff changeset
133 setmetatable(services, services_mt);
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diff changeset
134
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diff changeset
135 return services;
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parents: 11754
diff changeset
136 end
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diff changeset
137
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diff changeset
138 function services_xml(services, name, namespace)
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139 local reply = st.stanza(name or "services", { xmlns = namespace or "urn:xmpp:extdisco:2" });
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140
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diff changeset
141 for _, srv in ipairs(services) do
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
142 reply:tag("service", {
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 type = srv.type;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
144 transport = srv.transport;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
145 host = srv.host;
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parents:
diff changeset
146 port = srv.port and string.format("%d", srv.port) or nil;
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parents:
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147 username = srv.username;
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Kim Alvefur <zash@zash.se>
parents:
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148 password = srv.password;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
149 expires = srv.expires and dt.datetime(srv.expires) or nil;
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150 restricted = srv.restricted and "1" or nil;
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parents:
diff changeset
151 }):up();
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152 end
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153
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154 return reply;
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Kim Alvefur <zash@zash.se>
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155 end
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156
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157 local function handle_services(event)
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158 local origin, stanza = event.origin, event.stanza;
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159 local action = stanza.tags[1];
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160
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161 local user_bare = jid.bare(stanza.attr.from);
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162 local user_host = jid.host(user_bare);
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163 if not ((access:empty() and origin.type == "c2s") or access:contains(user_bare) or access:contains(user_host)) then
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diff changeset
164 origin.send(st.error_reply(stanza, "auth", "forbidden"));
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165 return true;
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Kim Alvefur <zash@zash.se>
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166 end
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167
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168 local services = get_services();
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169
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170 local requested_type = action.attr.type;
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171 if requested_type then
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172 services:filter(function(item)
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173 return item.type == requested_type;
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Kim Alvefur <zash@zash.se>
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174 end);
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175 end
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176
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177 module:fire_event("external_service/services", {
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178 origin = origin;
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179 stanza = stanza;
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180 requested_type = requested_type;
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181 services = services;
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182 });
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183
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184 local reply = st.reply(stanza):add_child(services_xml(services, action.name, action.attr.xmlns));
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185
11036
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parents:
diff changeset
186 origin.send(reply);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
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187 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
188 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
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parents:
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189
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Kim Alvefur <zash@zash.se>
parents:
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190 local function handle_credentials(event)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 local origin, stanza = event.origin, event.stanza;
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192 local action = stanza.tags[1];
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193
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
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diff changeset
194 if origin.type ~= "c2s" then
12431
95f33a006c03 mod_external_services: Move error message to correct place (fix #1725)
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parents: 11933
diff changeset
195 origin.send(st.error_reply(stanza, "auth", "forbidden"));
11036
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196 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
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197 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
198
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199 local services = get_services();
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parents:
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200 services:filter(function (item)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 return item.restricted;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
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202 end)
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
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diff changeset
203
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diff changeset
204 local requested_credentials = set.new();
11036
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parents:
diff changeset
205 for service in action:childtags("service") do
11753
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parents: 11628
diff changeset
206 if not service.attr.type or not service.attr.host then
12431
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Kim Alvefur <zash@zash.se>
parents: 11933
diff changeset
207 origin.send(st.error_reply(stanza, "modify", "bad-request", "The 'port' and 'type' attributes are required."));
11753
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parents: 11628
diff changeset
208 return true;
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Kim Alvefur <zash@zash.se>
parents: 11628
diff changeset
209 end
c4599a7c534c mod_external_services: Validate required attributes on credentials requests
Kim Alvefur <zash@zash.se>
parents: 11628
diff changeset
210
11754
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Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
211 requested_credentials:add(string.format("%s:%s:%d", service.attr.type, service.attr.host,
21a9b3f2a728 mod_external_services: Filter services by requested credentials using a Set
Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
212 tonumber(service.attr.port) or 0));
11036
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
214
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 module:fire_event("external_service/credentials", {
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216 origin = origin;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 stanza = stanza;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 requested_credentials = requested_credentials;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219 services = services;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 });
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
221
11754
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Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
222 services:filter(function (srv)
21a9b3f2a728 mod_external_services: Filter services by requested credentials using a Set
Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
223 local port_key = string.format("%s:%s:%d", srv.type, srv.host, srv.port or 0);
21a9b3f2a728 mod_external_services: Filter services by requested credentials using a Set
Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
224 local portless_key = string.format("%s:%s:%d", srv.type, srv.host, 0);
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Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
225 return requested_credentials:contains(port_key) or requested_credentials:contains(portless_key);
21a9b3f2a728 mod_external_services: Filter services by requested credentials using a Set
Kim Alvefur <zash@zash.se>
parents: 11753
diff changeset
226 end);
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parents: 11753
diff changeset
227
11756
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diff changeset
228 local reply = st.reply(stanza):add_child(services_xml(services, action.name, action.attr.xmlns));
11036
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
229
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
230 origin.send(reply);
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
231 return true;
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
232 end
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
233
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
234 -- XEP-0215 v0.7
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
235 module:add_feature("urn:xmpp:extdisco:2");
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
236 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
237 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
238
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
239 -- COMPAT XEP-0215 v0.6
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
240 -- 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
241 module:add_feature("urn:xmpp:extdisco:1");
79e410cd7f6e mod_external_services: XEP-0215: External Service Discovery
Kim Alvefur <zash@zash.se>
parents:
diff changeset
242 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
243 module:hook("iq-get/host/urn:xmpp:extdisco:1:credentials", handle_credentials);