Mercurial > prosody-modules

annotate mod_http_upload/mod_http_upload.lua @ 1986:9e268b4fba08

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mod_pubsub_hub/README: Update a little bit
author Kim Alvefur <zash@zash.se>
date Sun, 20 Dec 2015 18:58:09 +0100
parents 2ce2b194d501
children 40056a27f394
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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2 --
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Kim Alvefur <zash@zash.se>
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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;
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;
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
15 local t_concat = table.concat;
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parents: 1906
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16 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
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17 local s_upper = string.upper;
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18
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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19 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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20 return a .. package.config:sub(1,1) .. b;
1815
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parents: 1805
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21 end
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parents: 1805
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22
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parents: 1850
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23 -- config
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parents: 1850
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24 local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 10 * 1024 * 1024); -- 10 MB
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25
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26 -- depends
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27 module:depends("http");
1805
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parents: 1772
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28 module:depends("disco");
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29
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30 -- 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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31 local xmlns_http_upload = "urn:xmpp:http:upload";
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32
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33 module:add_feature(xmlns_http_upload);
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34
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35 -- state
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36 local pending_slots = module:shared("upload_slots");
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37
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parents: 1966
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38 local storage_path = module:get_option_string(module.name .. "_path", join_path(prosody.paths.data, module.name));
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39 lfs.mkdir(storage_path);
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40
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41 -- hooks
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parents:
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42 module:hook("iq/host/"..xmlns_http_upload..":request", function (event)
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43 local stanza, origin = event.stanza, event.origin;
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e5243fa16210 mod_http_upload: Cache first-level child <request> in local variable
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parents: 1817
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44 local request = stanza.tags[1];
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45 -- local clients only
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parents:
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46 if origin.type ~= "c2s" then
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47 origin.send(st.error_reply(stanza, "cancel", "not-authorized"));
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48 return true;
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49 end
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Kim Alvefur <zash@zash.se>
parents:
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50 -- validate
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parents: 1817
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51 local filename = request:get_child_text("filename");
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parents:
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52 if not filename or filename:find("/") then
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e3a0ebe671cc mod_http_upload: Include failure reason in error response
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parents: 1849
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53 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename"));
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54 return true;
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55 end
1851
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parents: 1850
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56 local filesize = tonumber(request:get_child_text("size"));
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parents: 1850
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57 if not filesize then
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parents: 1850
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58 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size"));
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parents: 1850
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59 return true;
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parents: 1850
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60 elseif filesize > file_size_limit then
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parents: 1850
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61 origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large",
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parents: 1850
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62 st.stanza("file-too-large", {xmlns=xmlns_http_upload})
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parents: 1850
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63 :tag("max-size"):text(tostring(file_size_limit))));
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parents: 1850
diff changeset
64 return true;
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parents: 1850
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65 end
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Kim Alvefur <zash@zash.se>
parents:
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66 local reply = st.reply(stanza);
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Kim Alvefur <zash@zash.se>
parents:
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67 reply:tag("slot", { xmlns = xmlns_http_upload });
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Kim Alvefur <zash@zash.se>
parents:
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68 local random = uuid();
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Kim Alvefur <zash@zash.se>
parents:
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69 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
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70 local url = module:http_url() .. "/" .. random .. "/" .. urlencode(filename);
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parents:
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71 reply:tag("get"):text(url):up();
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parents:
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72 reply:tag("put"):text(url):up();
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73 origin.send(reply);
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74 return true;
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parents:
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75 end);
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parents:
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76
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parents:
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77 -- http service
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Kim Alvefur <zash@zash.se>
parents:
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78 local function upload_data(event, path)
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Kim Alvefur <zash@zash.se>
parents:
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79 if not pending_slots[path] then
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Kim Alvefur <zash@zash.se>
parents:
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80 return 401;
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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 local random, filename = path:match("^([^/]+)/([^/]+)$");
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parents:
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83 if not random then
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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84 return 400;
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Kim Alvefur <zash@zash.se>
parents:
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85 end
1851
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Kim Alvefur <zash@zash.se>
parents: 1850
diff changeset
86 if #event.request.body > file_size_limit then
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Kim Alvefur <zash@zash.se>
parents: 1850
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87 module:log("error", "Uploaded file too large %d bytes", #event.request.body);
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Kim Alvefur <zash@zash.se>
parents: 1850
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88 return 400;
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Kim Alvefur <zash@zash.se>
parents: 1850
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89 end
1772
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Kim Alvefur <zash@zash.se>
parents:
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90 local dirname = join_path(storage_path, random);
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parents:
diff changeset
91 if not lfs.mkdir(dirname) then
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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92 module:log("error", "Could not create directory %s for upload", dirname);
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parents:
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93 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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94 end
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Kim Alvefur <zash@zash.se>
parents:
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95 local full_filename = join_path(dirname, filename);
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Kim Alvefur <zash@zash.se>
parents:
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96 local fh, ferr = io.open(full_filename, "w");
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parents:
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97 if not fh then
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
98 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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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:
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101 local ok, err = fh:write(event.request.body);
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parents:
diff changeset
102 if not ok then
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
103 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
104 os.remove(full_filename);
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Kim Alvefur <zash@zash.se>
parents:
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105 return 500;
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Kim Alvefur <zash@zash.se>
parents:
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106 end
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Kim Alvefur <zash@zash.se>
parents:
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107 ok, err = fh:close();
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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:
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109 module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
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parents:
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110 os.remove(full_filename);
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parents:
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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:
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113 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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114 pending_slots[path] = nil;
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Kim Alvefur <zash@zash.se>
parents:
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115 return 200;
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Kim Alvefur <zash@zash.se>
parents:
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116 end
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parents:
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117
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
118 -- FIXME Duplicated from net.http.server
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
119
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
120 local codes = require "net.http.codes";
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Kim Alvefur <zash@zash.se>
parents: 1906
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121 local headerfix = setmetatable({}, {
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parents: 1906
diff changeset
122 __index = function(t, k)
24c22cbb86e4 mod_http_upload: Duplicate code from net.http.server in order send proper HEAD responses
Kim Alvefur <zash@zash.se>
parents: 1906
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123 local v = "\r\n"..k:gsub("_", "-"):gsub("%f[%w].", s_upper)..": ";
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parents: 1906
diff changeset
124 t[k] = v;
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parents: 1906
diff changeset
125 return v;
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parents: 1906
diff changeset
126 end
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parents: 1906
diff changeset
127 });
1772
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parents:
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128
1912
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parents: 1906
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129 local function send_response_sans_body(response, body)
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parents: 1906
diff changeset
130 if response.finished then return; end
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parents: 1906
diff changeset
131 response.finished = true;
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parents: 1906
diff changeset
132 response.conn._http_open_response = nil;
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parents: 1906
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133
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parents: 1906
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134 local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]);
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parents: 1906
diff changeset
135 local headers = response.headers;
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parents: 1906
diff changeset
136 body = body or response.body or "";
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parents: 1906
diff changeset
137 headers.content_length = #body;
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parents: 1906
diff changeset
138
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
139 local output = { status_line };
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parents: 1906
diff changeset
140 for k,v in pairs(headers) do
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
141 t_insert(output, headerfix[k]..v);
1905
43fac0c2c772 mod_http_upload: Fix HEAD requests
Kim Alvefur <zash@zash.se>
parents: 1874
diff changeset
142 end
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
143 t_insert(output, "\r\n\r\n");
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parents: 1906
diff changeset
144 -- Here we *don't* add the body to the output
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parents: 1906
diff changeset
145
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
146 response.conn:write(t_concat(output));
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parents: 1906
diff changeset
147 if response.on_destroy then
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parents: 1906
diff changeset
148 response:on_destroy();
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
149 response.on_destroy = nil;
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
150 end
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
151 if response.persistent then
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
152 response:finish_cb();
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parents: 1906
diff changeset
153 else
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
154 response.conn:close();
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parents: 1906
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155 end
1772
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
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156 end
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parents:
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157
1912
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Kim Alvefur <zash@zash.se>
parents: 1906
diff changeset
158 local serve_uploaded_files = module:depends("http_files").serve(storage_path);
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parents: 1906
diff changeset
159
1772
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 local function serve_head(event, path)
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
161 event.response.send = send_response_sans_body;
1772
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parents:
diff changeset
162 return serve_uploaded_files(event, path);
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
163 end
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
164
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
165 local function serve_hello(event)
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
166 event.response.headers.content_type = "text/html;charset=utf-8"
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
167 return "<!DOCTYPE html>\n<h1>Hello from mod_"..module.name.."!</h1>\n";
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
168 end
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
169
1772
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
170 module:provides("http", {
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 route = {
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
172 ["GET"] = serve_hello;
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
173 ["GET /"] = serve_hello;
1772
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 ["GET /*"] = serve_uploaded_files;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
175 ["HEAD /*"] = serve_head;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
176 ["PUT /*"] = upload_data;
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177 };
45f7e3c2557f mod_http_upload: Implementation of Conversations HTTP upload file transfer mode
Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 });
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
179
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
180 module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path);