prosody
e54b8a5e35ad
plugins/mod_tokenauth.lua

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plugins/mod_tokenauth.lua @ 12446:e54b8a5e35ad 0.12

util.random: Test whether util.crand works before using it (fix #1734) util.crand can be configured at compile time to use the Linux getrandom() system call, available from Linux 3.17, but it is still possible to load it with an older kernel lacking that system call, where attempting to use it throws an ENOSYS error. By testing for this on load we can fall back to /dev/urandom in this case.
author Kim Alvefur <zash@zash.se>
date Sat, 02 Apr 2022 16:33:27 +0200
parent 10675:5efd6865486c
child 12649:86e1187f6274
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1 local id = require "util.id";
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2 local jid = require "util.jid";
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3 local base64 = require "util.encodings".base64;
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4
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5 local token_store = module:open_store("auth_tokens", "map");
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6
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7 function create_jid_token(actor_jid, token_jid, token_scope, token_ttl)
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8 token_jid = jid.prep(token_jid);
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9 if not actor_jid or token_jid ~= actor_jid and not jid.compare(token_jid, actor_jid) then
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10 return nil, "not-authorized";
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11 end
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12
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13 local token_username, token_host, token_resource = jid.split(token_jid);
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14
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15 if token_host ~= module.host then
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16 return nil, "invalid-host";
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17 end
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18
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19 local token_info = {
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20 owner = actor_jid;
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21 created = os.time();
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22 expires = token_ttl and (os.time() + token_ttl) or nil;
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23 jid = token_jid;
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24 session = {
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25 username = token_username;
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26 host = token_host;
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27 resource = token_resource;
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28
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29 auth_scope = token_scope;
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30 };
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31 };
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32
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33 local token_id = id.long();
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34 local token = base64.encode("1;"..jid.join(token_username, token_host)..";"..token_id);
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35 token_store:set(token_username, token_id, token_info);
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36
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37 return token, token_info;
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38 end
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39
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40 local function parse_token(encoded_token)
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41 local token = base64.decode(encoded_token);
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42 if not token then return nil; end
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43 local token_jid, token_id = token:match("^1;([^;]+);(.+)$");
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44 if not token_jid then return nil; end
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45 local token_user, token_host = jid.split(token_jid);
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46 return token_id, token_user, token_host;
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47 end
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48
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49 function get_token_info(token)
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50 local token_id, token_user, token_host = parse_token(token);
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51 if not token_id then
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52 return nil, "invalid-token-format";
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53 end
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54 if token_host ~= module.host then
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55 return nil, "invalid-host";
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56 end
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57
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58 local token_info, err = token_store:get(token_user, token_id);
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59 if not token_info then
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60 if err then
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61 return nil, "internal-error";
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62 end
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63 return nil, "not-authorized";
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64 end
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65
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66 if token_info.expires and token_info.expires < os.time() then
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67 return nil, "not-authorized";
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68 end
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69
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70 return token_info
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71 end
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72
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73 function revoke_token(token)
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74 local token_id, token_user, token_host = parse_token(token);
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75 if not token_id then
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76 return nil, "invalid-token-format";
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77 end
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78 if token_host ~= module.host then
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79 return nil, "invalid-host";
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80 end
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81 return token_store:set(token_user, token_id, nil);
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82 end