annotate mod_pastebin/mod_pastebin.lua @ 76:1fc4e8dc66a6

mod_pastebin: Send Content-Type header to specify plain UTF-8 text
author Matthew Wild <mwild1@gmail.com>
date Sun, 01 Nov 2009 01:24:27 +0000
parents 3c7189e26848
children b51741b7e86d
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2 local st = require "util.stanza";
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3 local httpserver = require "net.httpserver";
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4 local uuid_new = require "util.uuid".generate;
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5 local os_time = os.time;
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6 local t_insert, t_remove = table.insert, table.remove;
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7 local add_task = require "util.timer".add_task;
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9 local length_threshold = config.get(module.host, "core", "pastebin_threshold") or 500;
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11 local base_url = config.get(module.host, "core", "pastebin_url");
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13 -- Seconds a paste should live for in seconds (config is in hours), default 24 hours
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14 local expire_after = math.floor((config.get(module.host, "core", "pastebin_expire_after") or 24) * 3600);
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16 local pastes = {};
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17 local default_headers = { ["Content-Type"] = "text/plain; charset=utf-8" };
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19 local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im";
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20 local xmlns_xhtml = "http://www.w3.org/1999/xhtml";
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22 function pastebin_text(text)
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23 local uuid = uuid_new();
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24 pastes[uuid] = { body = text, time = os_time(), headers = default_headers };
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25 pastes[#pastes+1] = uuid;
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26 if not pastes[2] then -- No other pastes, give the timer a kick
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27 add_task(expire_after, expire_pastes);
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28 end
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29 return base_url..uuid;
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30 end
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32 function handle_request(method, body, request)
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33 local pasteid = request.url.path:match("[^/]+$");
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34 if not pasteid or not pastes[pasteid] then
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35 return "Invalid paste id, perhaps it expired?";
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36 end
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38 --module:log("debug", "Received request, replying: %s", pastes[pasteid].text);
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40 return pastes[pasteid];
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41 end
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43 function check_message(data)
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44 local origin, stanza = data.origin, data.stanza;
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46 local body, bodyindex, htmlindex;
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47 for k,v in ipairs(stanza) do
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48 if v.name == "body" then
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49 body, bodyindex = v, k;
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50 elseif v.name == "html" and v.attr.xmlns == xmlns_xhtmlim then
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51 htmlindex = k;
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52 end
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53 end
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55 if not body then return; end
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56 body = body:get_text();
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58 --module:log("debug", "Body(%s) length: %d", type(body), #(body or ""));
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60 if body and #body > length_threshold then
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61 local url = pastebin_text(body);
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62 module:log("debug", "Pasted message as %s", url);
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63 --module:log("debug", " stanza[bodyindex] = %q", tostring( stanza[bodyindex]));
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64 stanza[bodyindex][1] = url;
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65 local html = st.stanza("html", { xmlns = xmlns_xhtmlim }):tag("body", { xmlns = xmlns_xhtml });
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66 html:tag("p"):text(body:sub(1,150)):up();
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67 html:tag("a", { href = url }):text("[...]"):up();
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68 stanza[htmlindex or #stanza+1] = html;
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69 end
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70 end
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72 module:hook("message/bare", check_message);
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74 function expire_pastes(time)
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75 time = time or os_time(); -- COMPAT with 0.5
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76 if pastes[1] then
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77 pastes[pastes[1]] = nil;
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78 t_remove(pastes, 1);
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79 if pastes[1] then
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80 return (expire_after - (time - pastes[pastes[1]].time)) + 1;
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81 end
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82 end
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83 end
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86 local ports = config.get(module.host, "core", "pastebin_ports") or { 5280 };
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87 for _, options in ipairs(ports) do
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88 local port, base, ssl, interface = 5280, "pastebin", false, nil;
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89 if type(options) == "number" then
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90 port = options;
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91 elseif type(options) == "table" then
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92 port, base, ssl, interface = options.port or 5280, options.path or "pastebin", options.ssl or false, options.interface;
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93 elseif type(options) == "string" then
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94 base = options;
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95 end
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96
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97 base_url = base_url or ("http://"..module:get_host()..(port ~= 80 and (":"..port) or "").."/"..base.."/");
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98
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99 httpserver.new{ port = port, base = base, handler = handle_request, ssl = ssl }
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100 end