annotate mod_pubsub_text_interface/mod_pubsub_text_interface.lua @ 5271:3a1df3adad0c

mod_http_oauth2: Allow user to decide which requested scopes to grant These should at the very least be shown to the user, so they can decide whether to grant them. Considered whether to filter the requested scopes down to actually understood scopes that would be granted, but decided that this was a bit complex for a first step, since role role selection and other kinds of scopes are mixed into the same field here.
author Kim Alvefur <zash@zash.se>
date Thu, 23 Mar 2023 16:28:08 +0100
parents e0d0ef564095
children
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rev   line source
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1 local st = require "util.stanza";
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2 local jid = require "util.jid";
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3 local id = require "util.id";
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4
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5 local pubsub = module:depends "pubsub".service;
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6
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7 local xmlns_quick_resp = "urn:xmpp:tmp:quick-response";
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8 local name = module:get_option_string("name", "PubSub Service on "..module.host);
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9 local help = name..[[
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10
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11 Commands:
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12
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13 - `help` - this help message
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14 - `list` - list available nodes
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15 - `subscriptions` - list nodes you are subscribed to
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16 - `subscribe NODE` - subscribe to a node
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17 - `unsubscribe NODE` - unsubscribe from a node]];
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18 if pubsub.get_last_item then -- COMPAT not available in 0.10
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19 help = help .. "\n- `last NODE` - send the last item (again)"
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20 end
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21 -- FIXME better word for "node"
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22
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23 local friendly_pubsub_errors = {
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24 ["forbidden"] = "You are not allowed to do that";
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25 ["item-not-found"] = "That node does not exist";
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26 ["internal-server-error"] = "Something went wrong (see server logs)";
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27 ["not-subscribed"] = "You were not subscribed";
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28 };
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29
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30 module:hook("message/host", function (event)
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31 local stanza = event.stanza;
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32 local body = stanza:get_child_text("body");
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33 if not body then return end -- bail out
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34
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35 local from = stanza.attr.from;
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36
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37 local reply = st.reply(stanza);
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38 reply.attr.id = id.medium();
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39
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40 local command, node_arg = body:match("^(%a+)%s+(.*)");
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41 command = (command or body):lower();
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42
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43 if command == "help" then
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44 reply:body(help):up();
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45 reply:tag("response", { xmlns = xmlns_quick_resp, value = "list", }):up();
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46 reply:tag("response", { xmlns = xmlns_quick_resp, value = "subscriptions", }):up();
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47 elseif command == "list" then
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48 local ok, nodes = pubsub:get_nodes(from);
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49 if ok then
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50 local list = {};
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51 for node, node_obj in pairs(nodes) do
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52 table.insert(list, ("- `%s` %s"):format(node, node_obj.config.title or ""));
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53 end
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54 reply:body(table.concat(list, "\n"));
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55 else
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56 reply:body(friendly_pubsub_errors[nodes] or nodes);
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57 end
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58 elseif command == "subscriptions" then
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59 local ok, subs = pubsub:get_subscriptions(nil, from, from);
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60 if not ok then
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61 reply:body(friendly_pubsub_errors[subs] or subs);
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62 elseif #subs == 0 then
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63 reply:body("You are not subscribed to anything from this pubsub service");
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64 else
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65 local response = {};
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66 for i = 1, #subs do
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67 response[i] = string.format("- `%s`", subs[i].node);
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68 reply:tag("response", { xmlns = xmlns_quick_resp, value = "unsubscribe "..subs[i].node, }):up();
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69 reply:tag("response", { xmlns = xmlns_quick_resp, value = "last "..subs[i].node, }):up();
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70 end
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71 reply:body(table.concat(response, "\n"));
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72 end
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73 elseif command == "subscribe" then
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74 local ok, err = pubsub:add_subscription(node_arg, from, jid.bare(from), { ["pubsub#include_body"] = true });
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75 reply:body(ok and "OK" or friendly_pubsub_errors[err] or err);
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76 elseif command == "unsubscribe" then
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77 local ok, err = pubsub:remove_subscription(node_arg, from, jid.bare(from));
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78 reply:body(ok and "OK" or friendly_pubsub_errors[err] or err);
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79 elseif command == "last" and pubsub.get_last_item then
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80 local ok, item_id, item = pubsub:get_last_item(node_arg, from);
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81 if not ok then
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82 reply:body(friendly_pubsub_errors[item_id] or item_id);
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83 elseif not item_id then
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84 reply:body("That node does not contain any items");
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85 else
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86 pubsub.config.broadcaster("items", node_arg, {
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87 [from] = { ["pubsub#include_body"] = true }
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88 }, item, nil, pubsub.nodes[node_arg]);
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89 reply:body("OK");
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90 end
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91 else
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92 reply:body("Unknown command. `help` to list commands."):up();
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93 reply:tag("response", { xmlns = xmlns_quick_resp, value = "help", }):up();
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94 end
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95 reply:reset();
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96
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97 if stanza:get_child("no-copy", "urn:xmpp:hints") then
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98 reply:tag("no-copy", { xmlns = "urn:xmpp:hints" }):up();
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99 end
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100
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101 if stanza:get_child("no-store", "urn:xmpp:hints") then
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102 reply:tag("no-store", { xmlns = "urn:xmpp:hints" }):up();
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103 end
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104
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105 module:send(reply);
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106 return true;
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107 end);