prosody
c8f59ce7d3cf
plugins/mod_tokenauth.lua

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plugins/mod_tokenauth.lua @ 12672:c8f59ce7d3cf

mod_admin_shell: Ensure account has role before it is usable By creating the account first without a password it can't be used until the role has set. This is most important for restricted accounts, as a failure to set the role would lead to the account having more privileges than indented.
author Kim Alvefur <zash@zash.se>
date Thu, 18 Aug 2022 19:00:01 +0200
parent 12662:07424992d7fc
child 12742:126aefd2c4c6
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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 local usermanager = require "core.usermanager";
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5 local generate_identifier = require "util.id".short;
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6
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7 local token_store = module:open_store("auth_tokens", "map");
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8
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9 local function select_role(username, host, role)
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10 if role then
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11 return prosody.hosts[host].authz.get_role_by_name(role);
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12 end
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13 return usermanager.get_user_role(username, host);
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14 end
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15
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16 function create_jid_token(actor_jid, token_jid, token_role, token_ttl)
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17 token_jid = jid.prep(token_jid);
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18 if not actor_jid or token_jid ~= actor_jid and not jid.compare(token_jid, actor_jid) then
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19 return nil, "not-authorized";
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20 end
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21
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22 local token_username, token_host, token_resource = jid.split(token_jid);
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23
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24 if token_host ~= module.host then
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25 return nil, "invalid-host";
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26 end
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27
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28 local token_info = {
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29 owner = actor_jid;
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30 created = os.time();
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31 expires = token_ttl and (os.time() + token_ttl) or nil;
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32 jid = token_jid;
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33
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34 resource = token_resource;
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35 role = token_role;
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36 };
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37
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38 local token_id = id.long();
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39 local token = base64.encode("1;"..jid.join(token_username, token_host)..";"..token_id);
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40 token_store:set(token_username, token_id, token_info);
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41
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42 return token, token_info;
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43 end
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44
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45 local function parse_token(encoded_token)
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46 local token = base64.decode(encoded_token);
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47 if not token then return nil; end
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48 local token_jid, token_id = token:match("^1;([^;]+);(.+)$");
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49 if not token_jid then return nil; end
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50 local token_user, token_host = jid.split(token_jid);
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51 return token_id, token_user, token_host;
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52 end
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53
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54 local function _get_parsed_token_info(token_id, token_user, token_host)
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55 if token_host ~= module.host then
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56 return nil, "invalid-host";
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57 end
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58
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59 local token_info, err = token_store:get(token_user, token_id);
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60 if not token_info then
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61 if err then
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62 return nil, "internal-error";
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63 end
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64 return nil, "not-authorized";
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65 end
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66
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67 if token_info.expires and token_info.expires < os.time() then
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68 return nil, "not-authorized";
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69 end
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70
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71 return token_info
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72 end
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73
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74 function get_token_info(token)
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75 local token_id, token_user, token_host = parse_token(token);
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76 if not token_id then
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77 return nil, "invalid-token-format";
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78 end
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79 return _get_parsed_token_info(token_id, token_user, token_host);
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80 end
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81
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82 function get_token_session(token, resource)
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83 local token_id, token_user, token_host = parse_token(token);
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84 if not token_id then
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85 return nil, "invalid-token-format";
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86 end
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87
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88 local token_info, err = _get_parsed_token_info(token_id, token_user, token_host);
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89 if not token_info then return nil, err; end
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90
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91 return {
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92 username = token_user;
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93 host = token_host;
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94 resource = token_info.resource or resource or generate_identifier();
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95
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96 role = select_role(token_user, token_host, token_info.role);
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97 };
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98 end
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99
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100
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101 function revoke_token(token)
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102 local token_id, token_user, token_host = parse_token(token);
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103 if not token_id then
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104 return nil, "invalid-token-format";
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105 end
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106 if token_host ~= module.host then
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107 return nil, "invalid-host";
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108 end
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109 return token_store:set(token_user, token_id, nil);
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110 end