Software / code / prosody-modules
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mod_pastebin/mod_pastebin.lua @ 476:2c85635318a5
mod_archive_muc: Fixed a nil global access.
| author | Waqas Hussain <waqas20@gmail.com> |
|---|---|
| date | Thu, 17 Nov 2011 20:24:46 +0500 |
| parent | 454:3f101f7a26d0 |
| child | 501:e851f386c904 |
| rev | line source |
|---|---|
| 5 | 1 |
| 2 local st = require "util.stanza"; | |
| 3 local httpserver = require "net.httpserver"; | |
| 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; |
| 5 | 8 |
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9 local utf8_pattern = "[\194-\244][\128-\191]*$"; |
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10 local function drop_invalid_utf8(seq) |
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11 local start = seq:byte(); |
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12 module:log("utf8: %d, %d", start, #seq); |
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13 if (start <= 223 and #seq < 2) |
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14 or (start >= 224 and start <= 239 and #seq < 3) |
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15 or (start >= 240 and start <= 244 and #seq < 4) |
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16 or (start > 244) then |
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17 return ""; |
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18 end |
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19 return seq; |
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20 end |
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21 |
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22 local pastebin_private_messages = module:get_option_boolean("pastebin_private_messages", hosts[module.host].type ~= "component"); |
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23 local length_threshold = module:get_option_number("pastebin_threshold", 500); |
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24 local line_threshold = module:get_option_number("pastebin_line_threshold", 4); |
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25 local max_summary_length = module:get_option_number("pastebin_summary_length", 150); |
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26 local html_preview = module:get_option_boolean("pastebin_html_preview", true); |
| 5 | 27 |
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28 local base_url = module:get_option_string("pastebin_url"); |
| 5 | 29 |
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30 -- Seconds a paste should live for in seconds (config is in hours), default 24 hours |
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31 local expire_after = math.floor(module:get_option_number("pastebin_expire_after", 24) * 3600); |
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32 |
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33 local trigger_string = module:get_option_string("pastebin_trigger"); |
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34 trigger_string = (trigger_string and trigger_string .. " "); |
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35 |
| 5 | 36 local pastes = {}; |
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37 local default_headers = { ["Content-Type"] = "text/plain; charset=utf-8" }; |
| 5 | 38 |
| 39 local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im"; | |
| 40 local xmlns_xhtml = "http://www.w3.org/1999/xhtml"; | |
| 41 | |
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42 function pastebin_text(text) |
| 5 | 43 local uuid = uuid_new(); |
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44 pastes[uuid] = { body = text, time = os_time(), headers = default_headers }; |
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45 pastes[#pastes+1] = uuid; |
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46 if not pastes[2] then -- No other pastes, give the timer a kick |
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47 add_task(expire_after, expire_pastes); |
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48 end |
| 5 | 49 return base_url..uuid; |
| 50 end | |
| 51 | |
| 52 function handle_request(method, body, request) | |
| 53 local pasteid = request.url.path:match("[^/]+$"); | |
| 54 if not pasteid or not pastes[pasteid] then | |
| 55 return "Invalid paste id, perhaps it expired?"; | |
| 56 end | |
| 57 | |
| 58 --module:log("debug", "Received request, replying: %s", pastes[pasteid].text); | |
| 59 | |
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60 return pastes[pasteid]; |
| 5 | 61 end |
| 62 | |
| 63 function check_message(data) | |
| 64 local origin, stanza = data.origin, data.stanza; | |
| 65 | |
| 66 local body, bodyindex, htmlindex; | |
| 67 for k,v in ipairs(stanza) do | |
| 68 if v.name == "body" then | |
| 69 body, bodyindex = v, k; | |
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70 elseif v.name == "html" and v.attr.xmlns == xmlns_xhtmlim then |
| 5 | 71 htmlindex = k; |
| 72 end | |
| 73 end | |
| 74 | |
| 75 if not body then return; end | |
| 76 body = body:get_text(); | |
| 77 | |
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78 --module:log("debug", "Body(%s) length: %d", type(body), #(body or "")); |
| 5 | 79 |
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80 if body and ( |
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81 (#body > length_threshold) or |
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82 (trigger_string and body:find(trigger_string, 1, true) == 1) or |
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83 (select(2, body:gsub("\n", "%0")) >= line_threshold) |
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84 ) then |
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85 if trigger_string then |
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86 body = body:gsub("^" .. trigger_string, "", 1); |
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87 end |
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88 local url = pastebin_text(body); |
| 5 | 89 module:log("debug", "Pasted message as %s", url); |
| 90 --module:log("debug", " stanza[bodyindex] = %q", tostring( stanza[bodyindex])); | |
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91 local summary = (body:sub(1, max_summary_length):gsub(utf8_pattern, drop_invalid_utf8) or ""):match("[^\n]+") or ""; |
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92 summary = summary:match("^%s*(.-)%s*$"); |
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93 local summary_prefixed = summary:match("[,:]$"); |
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94 stanza[bodyindex][1] = (summary_prefixed and (summary.." ") or "")..url; |
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95 |
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96 if html_preview then |
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97 local line_count = select(2, body:gsub("\n", "%0")); |
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98 local link_text = ("[view %spaste (%d line%s)]"):format(summary_prefixed and "" or "rest of ", line_count, line_count == 1 and "" or "s"); |
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99 local html = st.stanza("html", { xmlns = xmlns_xhtmlim }):tag("body", { xmlns = xmlns_xhtml }); |
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100 html:tag("p"):text(summary.." "):up(); |
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101 html:tag("a", { href = url }):text(link_text):up(); |
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102 stanza[htmlindex or #stanza+1] = html; |
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103 end |
| 5 | 104 end |
| 105 end | |
| 106 | |
| 107 module:hook("message/bare", check_message); | |
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108 if pastebin_private_messages then |
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109 module:hook("message/full", check_message); |
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110 end |
| 5 | 111 |
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112 function expire_pastes(time) |
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113 time = time or os_time(); -- COMPAT with 0.5 |
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114 if pastes[1] then |
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115 pastes[pastes[1]] = nil; |
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116 t_remove(pastes, 1); |
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117 if pastes[1] then |
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118 return (expire_after - (time - pastes[pastes[1]].time)) + 1; |
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119 end |
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120 end |
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121 end |
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122 |
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123 |
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124 local ports = module:get_option("pastebin_ports", { 5280 }); |
| 5 | 125 for _, options in ipairs(ports) do |
| 126 local port, base, ssl, interface = 5280, "pastebin", false, nil; | |
| 127 if type(options) == "number" then | |
| 128 port = options; | |
| 129 elseif type(options) == "table" then | |
| 130 port, base, ssl, interface = options.port or 5280, options.path or "pastebin", options.ssl or false, options.interface; | |
| 131 elseif type(options) == "string" then | |
| 132 base = options; | |
| 133 end | |
| 134 | |
| 135 base_url = base_url or ("http://"..module:get_host()..(port ~= 80 and (":"..port) or "").."/"..base.."/"); | |
| 136 | |
| 137 httpserver.new{ port = port, base = base, handler = handle_request, ssl = ssl } | |
| 138 end | |
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139 |
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140 function module.save() |
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141 return { pastes = pastes }; |
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142 end |
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143 |
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144 function module.restore(data) |
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145 pastes = data.pastes or pastes; |
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146 end |
