Mercurial > prosody-modules
annotate mod_http_upload/mod_http_upload.lua @ 1820:8de50be756e5
Various README files: Correct indentation levels, fix syntax and other small fixes
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 02 Sep 2015 17:30:33 +0200 |
parents | 1971ff719e72 |
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1 -- mod_http_upload |
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2 -- |
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3 -- Copyright (C) 2015 Kim Alvefur |
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4 -- |
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5 -- This file is MIT/X11 licensed. |
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6 -- |
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7 -- Implementation of HTTP Upload file transfer mechanism used by Conversations |
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8 -- |
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9 |
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10 -- imports |
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11 local st = require"util.stanza"; |
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12 local lfs = require"lfs"; |
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13 local uuid = require"util.uuid".generate; |
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14 |
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15 local function join_path(a, b) |
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16 return a .. package.config:sub(1,1) .. b; |
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17 end |
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18 |
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19 -- depends |
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20 module:depends("http"); |
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21 module:depends("disco"); |
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22 |
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23 -- namespace |
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24 local xmlns_http_upload = "eu:siacs:conversations:http:upload"; |
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25 |
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26 module:add_feature(xmlns_http_upload); |
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27 |
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28 -- state |
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29 local pending_slots = module:shared("upload_slots"); |
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30 |
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31 local storage_path = join_path(prosody.paths.data, module.name); |
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32 lfs.mkdir(storage_path); |
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33 |
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34 -- hooks |
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35 module:hook("iq/host/"..xmlns_http_upload..":request", function (event) |
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36 local stanza, origin = event.stanza, event.origin; |
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37 -- local clients only |
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38 if origin.type ~= "c2s" then |
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39 origin.send(st.error_reply(stanza, "cancel", "not-authorized")); |
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40 return true; |
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41 end |
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42 -- validate |
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43 local filename = stanza.tags[1]:get_child_text("filename"); |
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44 if not filename or filename:find("/") then |
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45 origin.send(st.error_reply(stanza, "modify", "bad-request")); |
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46 return true; |
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47 end |
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48 local reply = st.reply(stanza); |
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49 reply:tag("slot", { xmlns = xmlns_http_upload }); |
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50 local random = uuid(); |
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51 pending_slots[random.."/"..filename] = origin.full_jid; |
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52 local url = module:http_url() .. "/" .. random .. "/" .. filename; |
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53 reply:tag("get"):text(url):up(); |
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54 reply:tag("put"):text(url):up(); |
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55 origin.send(reply); |
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56 return true; |
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57 end); |
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58 |
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59 -- http service |
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60 local function upload_data(event, path) |
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61 if not pending_slots[path] then |
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62 return 401; |
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63 end |
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64 local random, filename = path:match("^([^/]+)/([^/]+)$"); |
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65 if not random then |
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66 return 400; |
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67 end |
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68 local dirname = join_path(storage_path, random); |
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69 if not lfs.mkdir(dirname) then |
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70 module:log("error", "Could not create directory %s for upload", dirname); |
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71 return 500; |
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72 end |
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73 local full_filename = join_path(dirname, filename); |
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74 local fh, ferr = io.open(full_filename, "w"); |
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75 if not fh then |
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76 module:log("error", "Could not open file %s for upload: %s", full_filename, ferr); |
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77 return 500; |
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78 end |
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79 local ok, err = fh:write(event.request.body); |
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80 if not ok then |
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81 module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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82 os.remove(full_filename); |
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83 return 500; |
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84 end |
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85 ok, err = fh:close(); |
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86 if not ok then |
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87 module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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88 os.remove(full_filename); |
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89 return 500; |
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90 end |
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91 module:log("info", "File uploaded by %s to slot %s", pending_slots[path], random); |
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92 pending_slots[path] = nil; |
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93 return 200; |
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94 end |
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95 |
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96 local serve_uploaded_files = module:depends("http_files").serve(storage_path); |
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97 |
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98 local function size_only(request, data) |
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99 request.headers.content_size = #data; |
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100 return 200; |
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101 end |
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102 |
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103 local function serve_head(event, path) |
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104 event.send = size_only; |
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105 return serve_uploaded_files(event, path); |
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106 end |
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107 |
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108 module:provides("http", { |
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109 route = { |
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110 ["GET /*"] = serve_uploaded_files; |
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111 ["HEAD /*"] = serve_head; |
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112 ["PUT /*"] = upload_data; |
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113 }; |
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114 }); |