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annotate mod_sasl2_sm/mod_sasl2_sm.lua @ 5030:3e79876d135b

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mod_sasl2_sm: Integration with mod_sasl2_bind2
author Matthew Wild <mwild1@gmail.com>
date Fri, 02 Sep 2022 16:22:31 +0100
parents 8b9ab351dd78
children f7eaf73b8f30
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1 local st = require "util.stanza";
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2
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3 local mod_smacks = module:depends("smacks");
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4
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5 local xmlns_sasl2 = "urn:xmpp:sasl:1";
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6 local xmlns_sm = "urn:xmpp:sm:3";
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7
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8 -- Advertise what we can do
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9
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10 module:hook("advertise-sasl-features", function (event)
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11 local features = event.features;
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12 features:tag("sm", { xmlns = xmlns_sm }):up();
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13 end);
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14
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15 module:hook("advertise-bind-features", function (event)
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16 local features = event.features;
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17 features:tag("feature", { var = xmlns_sm }):up();
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18 end);
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19
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20 module:hook_tag(xmlns_sasl2, "authenticate", function (session, auth)
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21 -- Cache action for future processing (after auth success)
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22 session.sasl2_sm_request = auth:child_with_ns(xmlns_sm);
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23 end, 100);
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24
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25 -- SASL 2 integration (for resume)
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26
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27 module:hook("sasl2/c2s/success", function (event)
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28 local session = event.session;
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29 local sm_request = session.sasl2_sm_request;
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30 if not sm_request then return; end
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31 session.sasl2_sm_request = nil;
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32 local sm_result;
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33 if sm_request.name ~= "resume" then return; end
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34
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35 local resumed, err = mod_smacks.do_resume(session, sm_request);
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36 if not resumed then
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37 local h = err.context and err.context.h;
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38 sm_result = st.stanza("failed", { xmlns = xmlns_sm, h = h and ("%d"):format(h) or nil })
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39 :add_error(err);
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40 else
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41 event.session = resumed.session; -- Update to resumed session
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42 event.sasl2_sm_success = resumed; -- To be called after sending final SASL response
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43 sm_result = st.stanza("resumed", { xmlns = xmlns_sm,
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44 h = ("%d"):format(event.session.handled_stanza_count);
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45 previd = resumed.id; });
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46 end
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47
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48 if sm_result then
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49 event.success:add_child(sm_result);
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50 end
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51 end, 110);
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52
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53 -- Bind 2 integration (for enable)
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54
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55 module:hook("advertise-bind-features", function (event)
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56 event.features:tag("feature", { var = xmlns_sm }):up();
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57 end);
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58
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59 module:hook("enable-bind-features", function (event)
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60 local sm_enable = event.features:get_child("enable", xmlns_sm);
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61 if not sm_enable then return; end
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62
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63 local sm_result;
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64 local enabled, err = mod_smacks.do_enable(event.session, sm_enable);
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65 if not enabled then
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66 sm_result = st.stanza("failed", { xmlns = xmlns_sm })
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67 :add_error(err);
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68 else
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69 event.sasl2_sm_success = enabled; -- To be called after sending final SASL response
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70 sm_result = st.stanze("enabled", {
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71 xmlns = xmlns_sm;
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72 id = enabled.id;
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73 resume = enabled.id and "1" or nil;
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74 max = enabled.resume_max;
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75 });
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76 end
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77 event.bind_result:add_child(sm_result);
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78 end, 100);
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79
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80 -- Finish and/or clean up after SASL 2 completed
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81
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82 module:hook("sasl2/c2s/success", function (event)
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83 -- The authenticate response has already been sent at this point
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84 local success = event.sasl2_sm_success;
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85 if success then
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86 success.finish(); -- Finish enable/resume and sync stanzas
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87 end
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88 end, -1100);
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89
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90 module:hook("sasl2/c2s/failure", function (event)
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91 event.session.sasl2_sm_request = nil;
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92 end);