prosody-modules
5849d70bcd37
mod_http_upload/mod_http_upload.lua

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mod_http_upload/mod_http_upload.lua @ 1906:5849d70bcd37

mod_http_upload: Fix Content-Length header (it is now identical to the one in net.http.server)
author Kim Alvefur <zash@zash.se>
date Wed, 14 Oct 2015 13:20:59 +0200
parent 1905:43fac0c2c772
child 1912:24c22cbb86e4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1772
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- mod_http_upload
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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2 --
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Kim Alvefur <zash@zash.se>
parents:
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3 -- Copyright (C) 2015 Kim Alvefur
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Kim Alvefur <zash@zash.se>
parents:
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4 --
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Kim Alvefur <zash@zash.se>
parents:
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5 -- This file is MIT/X11 licensed.
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Kim Alvefur <zash@zash.se>
parents:
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6 --
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Kim Alvefur <zash@zash.se>
parents:
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7 -- Implementation of HTTP Upload file transfer mechanism used by Conversations
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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8 --
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Kim Alvefur <zash@zash.se>
parents:
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9
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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10 -- imports
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Kim Alvefur <zash@zash.se>
parents:
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11 local st = require"util.stanza";
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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12 local lfs = require"lfs";
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Kim Alvefur <zash@zash.se>
parents:
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13 local uuid = require"util.uuid".generate;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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14
1815
abacf6698d97 mod_http_upload: Include join_path function, should make it work with 0.9.x
Kim Alvefur <zash@zash.se>
parents: 1805
diff changeset
15 local function join_path(a, b)
1817
1971ff719e72 mod_http_upload: Fix typo (thanks mo)
Kim Alvefur <zash@zash.se>
parents: 1815
diff changeset
16 return a .. package.config:sub(1,1) .. b;
1815
abacf6698d97 mod_http_upload: Include join_path function, should make it work with 0.9.x
Kim Alvefur <zash@zash.se>
parents: 1805
diff changeset
17 end
abacf6698d97 mod_http_upload: Include join_path function, should make it work with 0.9.x
Kim Alvefur <zash@zash.se>
parents: 1805
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18
1851
03c5639882a7 mod_http_upload: Add support for a file size limit
Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
19 -- config
03c5639882a7 mod_http_upload: Add support for a file size limit
Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
20 local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 10 * 1024 * 1024); -- 10 MB
03c5639882a7 mod_http_upload: Add support for a file size limit
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parents: 1850
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21
1772
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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22 -- depends
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Kim Alvefur <zash@zash.se>
parents:
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23 module:depends("http");
1805
25c28644fae8 mod_http_upload: Depend on mod_disco, allows it to be discovered when set up as a component
Kim Alvefur <zash@zash.se>
parents: 1772
diff changeset
24 module:depends("disco");
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25
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Kim Alvefur <zash@zash.se>
parents:
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26 -- namespace
1874
8ef500508c59 mod_http_upload.lua: use official namespace from XEP-0363
Michael Töglhofer <michael@toeglhofer.net>
parents: 1851
diff changeset
27 local xmlns_http_upload = "urn:xmpp:http:upload";
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parents:
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28
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Kim Alvefur <zash@zash.se>
parents:
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29 module:add_feature(xmlns_http_upload);
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30
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parents:
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31 -- state
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Kim Alvefur <zash@zash.se>
parents:
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32 local pending_slots = module:shared("upload_slots");
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33
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Kim Alvefur <zash@zash.se>
parents:
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34 local storage_path = join_path(prosody.paths.data, module.name);
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Kim Alvefur <zash@zash.se>
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35 lfs.mkdir(storage_path);
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36
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37 -- hooks
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Kim Alvefur <zash@zash.se>
parents:
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38 module:hook("iq/host/"..xmlns_http_upload..":request", function (event)
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Kim Alvefur <zash@zash.se>
parents:
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39 local stanza, origin = event.stanza, event.origin;
1848
e5243fa16210 mod_http_upload: Cache first-level child <request> in local variable
Kim Alvefur <zash@zash.se>
parents: 1817
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40 local request = stanza.tags[1];
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41 -- local clients only
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Kim Alvefur <zash@zash.se>
parents:
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42 if origin.type ~= "c2s" then
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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43 origin.send(st.error_reply(stanza, "cancel", "not-authorized"));
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Kim Alvefur <zash@zash.se>
parents:
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44 return true;
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Kim Alvefur <zash@zash.se>
parents:
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45 end
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Kim Alvefur <zash@zash.se>
parents:
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46 -- validate
1848
e5243fa16210 mod_http_upload: Cache first-level child <request> in local variable
Kim Alvefur <zash@zash.se>
parents: 1817
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47 local filename = request:get_child_text("filename");
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Kim Alvefur <zash@zash.se>
parents:
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48 if not filename or filename:find("/") then
1850
e3a0ebe671cc mod_http_upload: Include failure reason in error response
Kim Alvefur <zash@zash.se>
parents: 1849
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49 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename"));
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50 return true;
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51 end
1851
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Kim Alvefur <zash@zash.se>
parents: 1850
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52 local filesize = tonumber(request:get_child_text("size"));
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parents: 1850
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53 if not filesize then
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Kim Alvefur <zash@zash.se>
parents: 1850
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54 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size"));
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Kim Alvefur <zash@zash.se>
parents: 1850
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55 return true;
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Kim Alvefur <zash@zash.se>
parents: 1850
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56 elseif filesize > file_size_limit then
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parents: 1850
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57 origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large",
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Kim Alvefur <zash@zash.se>
parents: 1850
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58 st.stanza("file-too-large", {xmlns=xmlns_http_upload})
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Kim Alvefur <zash@zash.se>
parents: 1850
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59 :tag("max-size"):text(tostring(file_size_limit))));
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Kim Alvefur <zash@zash.se>
parents: 1850
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60 return true;
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Kim Alvefur <zash@zash.se>
parents: 1850
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61 end
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Kim Alvefur <zash@zash.se>
parents:
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62 local reply = st.reply(stanza);
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Kim Alvefur <zash@zash.se>
parents:
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63 reply:tag("slot", { xmlns = xmlns_http_upload });
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Kim Alvefur <zash@zash.se>
parents:
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64 local random = uuid();
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Kim Alvefur <zash@zash.se>
parents:
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65 pending_slots[random.."/"..filename] = origin.full_jid;
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Kim Alvefur <zash@zash.se>
parents:
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66 local url = module:http_url() .. "/" .. random .. "/" .. filename;
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Kim Alvefur <zash@zash.se>
parents:
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67 reply:tag("get"):text(url):up();
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Kim Alvefur <zash@zash.se>
parents:
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68 reply:tag("put"):text(url):up();
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Kim Alvefur <zash@zash.se>
parents:
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69 origin.send(reply);
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Kim Alvefur <zash@zash.se>
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70 return true;
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Kim Alvefur <zash@zash.se>
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71 end);
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72
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parents:
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73 -- http service
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Kim Alvefur <zash@zash.se>
parents:
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74 local function upload_data(event, path)
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Kim Alvefur <zash@zash.se>
parents:
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75 if not pending_slots[path] then
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Kim Alvefur <zash@zash.se>
parents:
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76 return 401;
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Kim Alvefur <zash@zash.se>
parents:
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77 end
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Kim Alvefur <zash@zash.se>
parents:
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78 local random, filename = path:match("^([^/]+)/([^/]+)$");
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Kim Alvefur <zash@zash.se>
parents:
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79 if not random then
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Kim Alvefur <zash@zash.se>
parents:
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80 return 400;
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Kim Alvefur <zash@zash.se>
parents:
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81 end
1851
03c5639882a7 mod_http_upload: Add support for a file size limit
Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
82 if #event.request.body > file_size_limit then
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Kim Alvefur <zash@zash.se>
parents: 1850
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83 module:log("error", "Uploaded file too large %d bytes", #event.request.body);
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
84 return 400;
03c5639882a7 mod_http_upload: Add support for a file size limit
Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
85 end
1772
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Kim Alvefur <zash@zash.se>
parents:
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86 local dirname = join_path(storage_path, random);
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Kim Alvefur <zash@zash.se>
parents:
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87 if not lfs.mkdir(dirname) then
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Kim Alvefur <zash@zash.se>
parents:
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88 module:log("error", "Could not create directory %s for upload", dirname);
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Kim Alvefur <zash@zash.se>
parents:
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89 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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90 end
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Kim Alvefur <zash@zash.se>
parents:
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91 local full_filename = join_path(dirname, filename);
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Kim Alvefur <zash@zash.se>
parents:
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92 local fh, ferr = io.open(full_filename, "w");
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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93 if not fh then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
94 module:log("error", "Could not open file %s for upload: %s", full_filename, ferr);
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Kim Alvefur <zash@zash.se>
parents:
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95 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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96 end
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Kim Alvefur <zash@zash.se>
parents:
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97 local ok, err = fh:write(event.request.body);
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Kim Alvefur <zash@zash.se>
parents:
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98 if not ok then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
99 module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
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Kim Alvefur <zash@zash.se>
parents:
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100 os.remove(full_filename);
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Kim Alvefur <zash@zash.se>
parents:
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101 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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102 end
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Kim Alvefur <zash@zash.se>
parents:
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103 ok, err = fh:close();
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
104 if not ok then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
105 module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
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Kim Alvefur <zash@zash.se>
parents:
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106 os.remove(full_filename);
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Kim Alvefur <zash@zash.se>
parents:
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107 return 500;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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108 end
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Kim Alvefur <zash@zash.se>
parents:
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109 module:log("info", "File uploaded by %s to slot %s", pending_slots[path], random);
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Kim Alvefur <zash@zash.se>
parents:
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110 pending_slots[path] = nil;
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Kim Alvefur <zash@zash.se>
parents:
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111 return 200;
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Kim Alvefur <zash@zash.se>
parents:
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112 end
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Kim Alvefur <zash@zash.se>
parents:
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113
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Kim Alvefur <zash@zash.se>
parents:
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114 local serve_uploaded_files = module:depends("http_files").serve(storage_path);
1905
43fac0c2c772 mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents: 1874
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115 local http_server = require"net.http.server";
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parents:
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116
1906
5849d70bcd37 mod_http_upload: Fix Content-Length header (it is now identical to the one in net.http.server)
Kim Alvefur <zash@zash.se>
parents: 1905
diff changeset
117 local function size_only(response, body)
5849d70bcd37 mod_http_upload: Fix Content-Length header (it is now identical to the one in net.http.server)
Kim Alvefur <zash@zash.se>
parents: 1905
diff changeset
118 if body then
5849d70bcd37 mod_http_upload: Fix Content-Length header (it is now identical to the one in net.http.server)
Kim Alvefur <zash@zash.se>
parents: 1905
diff changeset
119 response.headers.content_length = #body;
1905
43fac0c2c772 mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents: 1874
diff changeset
120 end
43fac0c2c772 mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents: 1874
diff changeset
121 return http_server.send_response(response);
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Kim Alvefur <zash@zash.se>
parents:
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122 end
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Kim Alvefur <zash@zash.se>
parents:
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123
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
124 local function serve_head(event, path)
1905
43fac0c2c772 mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents: 1874
diff changeset
125 event.response.send = size_only;
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Kim Alvefur <zash@zash.se>
parents:
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126 return serve_uploaded_files(event, path);
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127 end
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128
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129 module:provides("http", {
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130 route = {
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131 ["GET /*"] = serve_uploaded_files;
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132 ["HEAD /*"] = serve_head;
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133 ["PUT /*"] = upload_data;
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134 };
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135 });
1849
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136
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137 module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path);