author | Kim Alvefur <zash@zash.se> |
Mon, 14 Sep 2015 12:45:00 +0200 | |
changeset 1854 | e3a0ebe671cc |
parent 1853 | 5244c9b0b297 |
child 1855 | 03c5639882a7 |
permissions | -rw-r--r-- |
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1 |
-- mod_http_upload |
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-- |
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-- 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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|
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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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local uuid = require"util.uuid".generate; |
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14 |
|
1819
abacf6698d97
mod_http_upload: Include join_path function, should make it work with 0.9.x
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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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mod_http_upload: Depend on mod_disco, allows it to be discovered when set up as a component
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module:depends("disco"); |
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|
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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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|
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31 |
local storage_path = join_path(prosody.paths.data, module.name); |
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lfs.mkdir(storage_path); |
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|
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34 |
-- hooks |
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module:hook("iq/host/"..xmlns_http_upload..":request", function (event) |
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local stanza, origin = event.stanza, event.origin; |
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mod_http_upload: Cache first-level child <request> in local variable
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local request = stanza.tags[1]; |
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-- local clients only |
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if origin.type ~= "c2s" then |
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origin.send(st.error_reply(stanza, "cancel", "not-authorized")); |
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return true; |
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42 |
end |
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-- validate |
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local filename = request:get_child_text("filename"); |
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if not filename or filename:find("/") then |
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origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename")); |
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47 |
return true; |
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48 |
end |
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|
49 |
local reply = st.reply(stanza); |
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50 |
reply:tag("slot", { xmlns = xmlns_http_upload }); |
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51 |
local random = uuid(); |
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pending_slots[random.."/"..filename] = origin.full_jid; |
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local url = module:http_url() .. "/" .. random .. "/" .. filename; |
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54 |
reply:tag("get"):text(url):up(); |
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55 |
reply:tag("put"):text(url):up(); |
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56 |
origin.send(reply); |
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57 |
return true; |
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58 |
end); |
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59 |
|
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60 |
-- http service |
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61 |
local function upload_data(event, path) |
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62 |
if not pending_slots[path] then |
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63 |
return 401; |
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64 |
end |
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65 |
local random, filename = path:match("^([^/]+)/([^/]+)$"); |
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66 |
if not random then |
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67 |
return 400; |
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68 |
end |
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69 |
local dirname = join_path(storage_path, random); |
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if not lfs.mkdir(dirname) then |
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module:log("error", "Could not create directory %s for upload", dirname); |
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return 500; |
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73 |
end |
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local full_filename = join_path(dirname, filename); |
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local fh, ferr = io.open(full_filename, "w"); |
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if not fh then |
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module:log("error", "Could not open file %s for upload: %s", full_filename, ferr); |
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78 |
return 500; |
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79 |
end |
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80 |
local ok, err = fh:write(event.request.body); |
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81 |
if not ok then |
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|
82 |
module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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83 |
os.remove(full_filename); |
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84 |
return 500; |
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|
85 |
end |
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|
86 |
ok, err = fh:close(); |
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87 |
if not ok then |
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|
88 |
module:log("error", "Could not write to file %s for upload: %s", full_filename, err); |
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|
89 |
os.remove(full_filename); |
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90 |
return 500; |
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|
91 |
end |
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92 |
module:log("info", "File uploaded by %s to slot %s", pending_slots[path], random); |
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93 |
pending_slots[path] = nil; |
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94 |
return 200; |
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|
95 |
end |
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96 |
|
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|
97 |
local serve_uploaded_files = module:depends("http_files").serve(storage_path); |
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98 |
|
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99 |
local function size_only(request, data) |
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100 |
request.headers.content_size = #data; |
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101 |
return 200; |
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parents:
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|
102 |
end |
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103 |
|
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104 |
local function serve_head(event, path) |
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parents:
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|
105 |
event.send = size_only; |
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|
106 |
return serve_uploaded_files(event, path); |
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parents:
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|
107 |
end |
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108 |
|
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|
109 |
module:provides("http", { |
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110 |
route = { |
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parents:
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111 |
["GET /*"] = serve_uploaded_files; |
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112 |
["HEAD /*"] = serve_head; |
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parents:
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113 |
["PUT /*"] = upload_data; |
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114 |
}; |
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115 |
}); |
1853
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mod_http_upload: Log a message with the upload URL and storage path for easy discovery
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116 |
|
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117 |
module:log("info", "URL: <%s>; Storage path: %s", module:http_url(), storage_path); |