Mercurial > prosody-modules

annotate mod_http_upload_external/mod_http_upload_external.lua @ 2422:57235bce06fc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_pubsub_feeds: Always approve unsubscription from unknown feeds
author Kim Alvefur <zash@zash.se>
date Mon, 19 Dec 2016 07:49:12 +0100
parents c2cf5b40b66d
children d6badf56ab5f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2332
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- mod_http_upload_external
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 --
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 -- Copyright (C) 2015-2016 Kim Alvefur
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 --
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 -- This file is MIT/X11 licensed.
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 --
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 -- imports
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 local st = require"util.stanza";
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 local uuid = require"util.uuid".generate;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 local http = require "util.http";
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 local dataform = require "util.dataforms".new;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 local HMAC = require "util.hashes".hmac_sha256;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15 -- config
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 100 * 1024 * 1024); -- 100 MB
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 local base_url = assert(module:get_option_string(module.name .. "_base_url"), module.name .. "_base_url is a required option");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 local secret = assert(module:get_option_string(module.name .. "_secret"), module.name .. "_secret is a required option");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 -- depends
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 module:depends("disco");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 -- namespace
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 local xmlns_http_upload = "urn:xmpp:http:upload";
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 -- identity and feature advertising
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 module:add_identity("store", "file", module:get_option_string("name", "HTTP File Upload"))
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 module:add_feature(xmlns_http_upload);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 module:add_extension(dataform {
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 { name = "FORM_TYPE", type = "hidden", value = xmlns_http_upload },
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 { name = "max-file-size", type = "text-single" },
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33 }:form({ ["max-file-size"] = tostring(file_size_limit) }, "result"));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 local function magic_crypto_dust(random, filename, filesize)
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 local message = string.format("%s/%s %d", random, filename, filesize);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 local digest = HMAC(secret, message, true);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 random, filename = http.urlencode(random), http.urlencode(filename);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 return base_url .. random .. "/" .. filename, "?v=" .. digest;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 end
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 -- hooks
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 module:hook("iq/host/"..xmlns_http_upload..":request", function (event)
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 local stanza, origin = event.stanza, event.origin;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 local request = stanza.tags[1];
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 -- local clients only
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 if origin.type ~= "c2s" then
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 module:log("debug", "Request for upload slot from a %s", origin.type);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 origin.send(st.error_reply(stanza, "cancel", "not-authorized"));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 return true;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 end
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 -- validate
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 local filename = request:get_child_text("filename");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 if not filename or filename:find("/") then
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
55 module:log("debug", "Filename %q not allowed", filename or "");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid filename"));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 return true;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58 end
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
59 local filesize = tonumber(request:get_child_text("size"));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
60 if not filesize then
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61 module:log("debug", "Missing file size");
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
62 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size"));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
63 return true;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 elseif filesize > file_size_limit then
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65 module:log("debug", "File too large (%d > %d)", filesize, file_size_limit);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 origin.send(st.error_reply(stanza, "modify", "not-acceptable", "File too large",
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67 st.stanza("file-too-large", {xmlns=xmlns_http_upload})
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 :tag("max-size"):text(tostring(file_size_limit))));
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 return true;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 end
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 local reply = st.reply(stanza);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72 reply:tag("slot", { xmlns = xmlns_http_upload });
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 local random = uuid();
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 local get_url, verify = magic_crypto_dust(random, filename, filesize);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 reply:tag("get"):text(get_url):up();
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 reply:tag("put"):text(get_url .. verify):up();
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 module:log("info", "Handed out upload slot %s to %s@%s", get_url, origin.username, origin.host);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 origin.send(reply);
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 return true;
c2cf5b40b66d mod_http_upload_external: Variant of mod_http_upload that delegates HTTP handling to other server using signed URLs
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 end);