Mercurial > prosody-modules

annotate mod_http_upload/mod_http_upload.lua @ 2178:24c9c0255235

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mod_mam_muc: Fix previous commit
author Kim Alvefur <zash@zash.se>
date Sun, 22 May 2016 00:06:21 +0200
parents cb74e4ab13f0
children e47046abf568
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:
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1 -- mod_http_upload
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parents:
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2 --
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
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.
2065
624e3fed6f92 mod_http_upload: Trim trailing whitespace
Kim Alvefur <zash@zash.se>
parents: 2053
diff changeset
6 --
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parents:
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7 -- Implementation of HTTP Upload file transfer mechanism used by Conversations
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parents:
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8 --
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9
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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";
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Kim Alvefur <zash@zash.se>
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12 local lfs = require"lfs";
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13 local uuid = require"util.uuid".generate;
1966
3b748666ff97 mod_http_upload: URL-encode filename in case it contains characters that need escaping (thanks Thilo)
Kim Alvefur <zash@zash.se>
parents: 1942
diff changeset
14 local urlencode = require"util.http".urlencode;
2066
cb74e4ab13f0 mod_http_upload: Advertise maximum file size in disco#info (Per XEP-0363 v0.2)
Kim Alvefur <zash@zash.se>
parents: 2065
diff changeset
15 local dataform = require "util.dataforms".new;
1912
24c22cbb86e4 mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
16 local t_concat = table.concat;
24c22cbb86e4 mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
17 local t_insert = table.insert;
1914
b01d60dfa405 mod_http_upload: Add missing local of string.upper (Thanks Thilo)
Kim Alvefur <zash@zash.se>
parents: 1912
diff changeset
18 local s_upper = string.upper;
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parents:
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19
1815
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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20 local function join_path(a, b)
1817
1971ff719e72 mod_http_upload: Fix typo (thanks mo)
Kim Alvefur <zash@zash.se>
parents: 1815
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21 return a .. package.config:sub(1,1) .. b;
1815
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Kim Alvefur <zash@zash.se>
parents: 1805
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22 end
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Kim Alvefur <zash@zash.se>
parents: 1805
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23
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parents: 1850
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24 -- config
2053
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Kim Alvefur <zash@zash.se>
parents: 1967
diff changeset
25 local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 1024 * 1024); -- 1 MB
1851
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parents: 1850
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26
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parents:
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27 -- depends
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Kim Alvefur <zash@zash.se>
parents:
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28 module:depends("http");
1805
25c28644fae8 mod_http_upload: Depend on mod_disco, allows it to be discovered when set up as a component
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parents: 1772
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29 module:depends("disco");
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30
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parents:
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31 -- namespace
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8ef500508c59 mod_http_upload.lua: use official namespace from XEP-0363
Michael Töglhofer <michael@toeglhofer.net>
parents: 1851
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32 local xmlns_http_upload = "urn:xmpp:http:upload";
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33
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parents:
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34 module:add_feature(xmlns_http_upload);
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parents:
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35
2066
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parents: 2065
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36 module:add_extension(dataform {
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parents: 2065
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37 { name = "FORM_TYPE", type = "hidden", value = xmlns_http_upload },
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parents: 2065
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38 { name = "max-file-size", type = "text-single" },
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parents: 2065
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39 }:form({ ["max-file-size"] = tostring(file_size_limit) }, "result"));
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parents: 2065
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40
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41 -- state
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Kim Alvefur <zash@zash.se>
parents:
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42 local pending_slots = module:shared("upload_slots");
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parents:
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43
1967
2ce2b194d501 mod_http_upload: Make file system path configurable
Kim Alvefur <zash@zash.se>
parents: 1966
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44 local storage_path = module:get_option_string(module.name .. "_path", join_path(prosody.paths.data, module.name));
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parents:
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45 lfs.mkdir(storage_path);
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parents:
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46
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Kim Alvefur <zash@zash.se>
parents:
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47 -- hooks
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Kim Alvefur <zash@zash.se>
parents:
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48 module:hook("iq/host/"..xmlns_http_upload..":request", function (event)
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Kim Alvefur <zash@zash.se>
parents:
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49 local stanza, origin = event.stanza, event.origin;
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e5243fa16210 mod_http_upload: Cache first-level child <request> in local variable
Kim Alvefur <zash@zash.se>
parents: 1817
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50 local request = stanza.tags[1];
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parents:
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51 -- local clients only
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 if origin.type ~= "c2s" then
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Kim Alvefur <zash@zash.se>
parents:
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53 origin.send(st.error_reply(stanza, "cancel", "not-authorized"));
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parents:
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54 return true;
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Kim Alvefur <zash@zash.se>
parents:
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55 end
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Kim Alvefur <zash@zash.se>
parents:
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56 -- validate
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e5243fa16210 mod_http_upload: Cache first-level child <request> in local variable
Kim Alvefur <zash@zash.se>
parents: 1817
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57 local filename = request:get_child_text("filename");
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Kim Alvefur <zash@zash.se>
parents:
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58 if not filename or filename:find("/") then
1850
e3a0ebe671cc mod_http_upload: Include failure reason in error response
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parents: 1849
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59 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename"));
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parents:
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60 return true;
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Kim Alvefur <zash@zash.se>
parents:
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61 end
1851
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
62 local filesize = tonumber(request:get_child_text("size"));
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
63 if not filesize then
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
64 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
diff changeset
65 return true;
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
66 elseif filesize > file_size_limit then
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
67 origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large",
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
68 st.stanza("file-too-large", {xmlns=xmlns_http_upload})
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Kim Alvefur <zash@zash.se>
parents: 1850
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69 :tag("max-size"):text(tostring(file_size_limit))));
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parents: 1850
diff changeset
70 return true;
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
71 end
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Kim Alvefur <zash@zash.se>
parents:
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72 local reply = st.reply(stanza);
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Kim Alvefur <zash@zash.se>
parents:
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73 reply:tag("slot", { xmlns = xmlns_http_upload });
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Kim Alvefur <zash@zash.se>
parents:
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74 local random = uuid();
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Kim Alvefur <zash@zash.se>
parents:
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75 pending_slots[random.."/"..filename] = origin.full_jid;
1966
3b748666ff97 mod_http_upload: URL-encode filename in case it contains characters that need escaping (thanks Thilo)
Kim Alvefur <zash@zash.se>
parents: 1942
diff changeset
76 local url = module:http_url() .. "/" .. random .. "/" .. urlencode(filename);
1772
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Kim Alvefur <zash@zash.se>
parents:
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77 reply:tag("get"):text(url):up();
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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78 reply:tag("put"):text(url):up();
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Kim Alvefur <zash@zash.se>
parents:
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79 origin.send(reply);
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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80 return true;
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Kim Alvefur <zash@zash.se>
parents:
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81 end);
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Kim Alvefur <zash@zash.se>
parents:
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82
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Kim Alvefur <zash@zash.se>
parents:
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83 -- http service
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Kim Alvefur <zash@zash.se>
parents:
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84 local function upload_data(event, path)
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Kim Alvefur <zash@zash.se>
parents:
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85 if not pending_slots[path] then
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Kim Alvefur <zash@zash.se>
parents:
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86 return 401;
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Kim Alvefur <zash@zash.se>
parents:
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87 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 local random, filename = path:match("^([^/]+)/([^/]+)$");
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 if not random then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 return 400;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
91 end
1851
03c5639882a7 mod_http_upload: Add support for a file size limit
Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
92 if #event.request.body > file_size_limit then
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Kim Alvefur <zash@zash.se>
parents: 1850
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93 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
94 return 400;
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
95 end
1772
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
96 local dirname = join_path(storage_path, random);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
97 if not lfs.mkdir(dirname) then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
98 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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99 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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100 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
101 local full_filename = join_path(dirname, filename);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
102 local fh, ferr = io.open(full_filename, "w");
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
103 if not fh then
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
104 module:log("error", "Could not open file %s for upload: %s", full_filename, ferr);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
105 return 500;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
106 end
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Kim Alvefur <zash@zash.se>
parents:
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107 local ok, err = fh:write(event.request.body);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
108 if not ok then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
109 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:
diff changeset
110 os.remove(full_filename);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
111 return 500;
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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:
diff changeset
113 ok, err = fh:close();
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114 if not ok then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
115 module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
116 os.remove(full_filename);
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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117 return 500;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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118 end
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Kim Alvefur <zash@zash.se>
parents:
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119 module:log("info", "File uploaded by %s to slot %s", pending_slots[path], random);
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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120 pending_slots[path] = nil;
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Kim Alvefur <zash@zash.se>
parents:
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121 return 200;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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122 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
123
1912
24c22cbb86e4 mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
124 -- FIXME Duplicated from net.http.server
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125
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126 local codes = require "net.http.codes";
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127 local headerfix = setmetatable({}, {
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128 __index = function(t, k)
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129 local v = "\r\n"..k:gsub("_", "-"):gsub("%f[%w].", s_upper)..": ";
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130 t[k] = v;
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131 return v;
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132 end
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133 });
1772
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134
1912
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135 local function send_response_sans_body(response, body)
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136 if response.finished then return; end
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137 response.finished = true;
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138 response.conn._http_open_response = nil;
2065
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parents: 2053
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139
1912
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140 local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]);
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parents: 1906
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141 local headers = response.headers;
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parents: 1906
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142 body = body or response.body or "";
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parents: 1906
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143 headers.content_length = #body;
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144
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145 local output = { status_line };
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parents: 1906
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146 for k,v in pairs(headers) do
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parents: 1906
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147 t_insert(output, headerfix[k]..v);
1905
43fac0c2c772 mod_http_upload: Fix HEAD requests
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parents: 1874
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148 end
1912
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parents: 1906
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149 t_insert(output, "\r\n\r\n");
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parents: 1906
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150 -- Here we *don't* add the body to the output
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151
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parents: 1906
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152 response.conn:write(t_concat(output));
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parents: 1906
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153 if response.on_destroy then
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parents: 1906
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154 response:on_destroy();
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parents: 1906
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155 response.on_destroy = nil;
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parents: 1906
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156 end
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parents: 1906
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157 if response.persistent then
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parents: 1906
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158 response:finish_cb();
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parents: 1906
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159 else
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parents: 1906
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160 response.conn:close();
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parents: 1906
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161 end
1772
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162 end
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parents:
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163
1912
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parents: 1906
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164 local serve_uploaded_files = module:depends("http_files").serve(storage_path);
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parents: 1906
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165
1772
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parents:
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166 local function serve_head(event, path)
1912
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parents: 1906
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167 event.response.send = send_response_sans_body;
1772
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parents:
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168 return serve_uploaded_files(event, path);
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parents:
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169 end
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parents:
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170
1942
ff95d983940c mod_http_upload: Say Hello to anyone opening the "bare" HTTP URL (helpful to show that module is loaded correctly)
Kim Alvefur <zash@zash.se>
parents: 1914
diff changeset
171 local function serve_hello(event)
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parents: 1914
diff changeset
172 event.response.headers.content_type = "text/html;charset=utf-8"
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parents: 1914
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173 return "<!DOCTYPE html>\n<h1>Hello from mod_"..module.name.."!</h1>\n";
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parents: 1914
diff changeset
174 end
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parents: 1914
diff changeset
175
1772
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parents:
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176 module:provides("http", {
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parents:
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177 route = {
1942
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parents: 1914
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178 ["GET"] = serve_hello;
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parents: 1914
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179 ["GET /"] = serve_hello;
1772
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parents:
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180 ["GET /*"] = serve_uploaded_files;
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parents:
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181 ["HEAD /*"] = serve_head;
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parents:
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182 ["PUT /*"] = upload_data;
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parents:
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183 };
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parents:
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184 });
1849
5244c9b0b297 mod_http_upload: Log a message with the upload URL and storage path for easy discovery
Kim Alvefur <zash@zash.se>
parents: 1848
diff changeset
185
5244c9b0b297 mod_http_upload: Log a message with the upload URL and storage path for easy discovery
Kim Alvefur <zash@zash.se>
parents: 1848
diff changeset
186 module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path);