prosody
9c5941198719
plugins/mod_compression.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

plugins/mod_compression.lua @ 2292:9c5941198719

mod_compression: Declaring the de-/compression pipes as local.
author Tobias Markmann <tm@ayena.de>
date Tue, 01 Dec 2009 21:04:02 +0100
parent 2291:c6bed51c6733
child 2293:abd28ed5d8b0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
1 -- Prosody IM
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
2 -- Copyright (C) 2009 Tobias Markmann
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
3 --
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
4 -- This project is MIT/X11 licensed. Please see the
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
5 -- COPYING file in the source package for more information.
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
6 --
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
7
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
8 local st = require "util.stanza";
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
9 local zlib = require "zlib";
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
10 local pcall = pcall;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
11 local xmlns_compression_feature = "http://jabber.org/features/compress"
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
12 local xmlns_compression_protocol = "http://jabber.org/protocol/compress"
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
13 local xmlns_stream = "http://etherx.jabber.org/streams";
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
14 local compression_stream_feature = st.stanza("compression", {xmlns=xmlns_compression_feature}):tag("method"):text("zlib"):up();
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
15
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
16 local compression_level = module:get_option("compression_level");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
17 -- if not defined assume admin wants best compression
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
18 if compression_level == nil then compression_level = 9 end;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
19
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
20
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
21 compression_level = tonumber(compression_level);
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
22 if not compression_level or compression_level < 1 or compression_level > 9 then
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
23 module:log("warn", "Invalid compression level in config: %s", tostring(compression_level));
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
24 module:log("warn", "Module loading aborted. Compression won't be available.");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
25 return;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
26 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
27
1670
23bb280c5eac Remove unwanted spaces.
Tobias Markmann <tm@ayena.de>
parents: 1669
diff changeset
28 module:add_event_hook("stream-features",
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
29 function (session, features)
1673
5f81cd6d4a92 Remove space at the end of a line.
Tobias Markmann <tm@ayena.de>
parents: 1672
diff changeset
30 if not session.compressed then
1674
250bddde4162 Add a TODO for s2s compression support.
Tobias Markmann <tm@ayena.de>
parents: 1673
diff changeset
31 -- FIXME only advertise compression support when TLS layer has no compression enabled
1672
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
32 features:add_child(compression_stream_feature);
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
33 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
34 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
35 );
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
36
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
37 module:hook("s2s-stream-features",
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
38 function (data)
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
39 local session, features = data.session, data.features;
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
40 -- FIXME only advertise compression support when TLS layer has no compression enabled
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
41 if not session.compressed then
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
42 features:add_child(compression_stream_feature);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
43 end
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
44 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
45 );
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
46
2291
c6bed51c6733 mod_compression: Some comment clean up.
Tobias Markmann <tm@ayena.de>
parents: 2289
diff changeset
47 -- Hook to activate compression if remote server supports it.
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
48 module:hook_stanza(xmlns_stream, "features",
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
49 function (session, stanza)
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
50 if not session.compressed then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
51 -- does remote server support compression?
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
52 local comp_st = stanza:child_with_name("compression");
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
53 if comp_st then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
54 -- do we support the mechanism
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
55 for a in comp_st:children() do
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
56 local algorithm = a[1]
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
57 if algorithm == "zlib" then
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
58 session.sends2s(st.stanza("compress", {xmlns=xmlns_compression_protocol}):tag("method"):text("zlib"))
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
59 session.log("info", "Enabled compression using zlib.")
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
60 return true;
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
61 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
62 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
63 session.log("debug", "Remote server supports no compression algorithm we support.")
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
64 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
65 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
66 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
67 , 250);
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
68
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
69
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
70 -- returns either nil or a fully functional ready to use inflate stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
71 local function get_deflate_stream(session)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
72 local status, deflate_stream = pcall(zlib.deflate, compression_level);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
73 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
74 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
75 (session.sends2s or session.send)(error_st);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
76 session.log("error", "Failed to create zlib.deflate filter.");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
77 module:log("error", deflate_stream);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
78 return
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
79 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
80 return deflate_stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
81 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
82
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
83 -- returns either nil or a fully functional ready to use inflate stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
84 local function get_inflate_stream(session)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
85 local status, inflate_stream = pcall(zlib.inflate);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
86 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
87 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
88 (session.sends2s or session.send)(error_st);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
89 session.log("error", "Failed to create zlib.deflate filter.");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
90 module:log("error", inflate_stream);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
91 return
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
92 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
93 return inflate_stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
94 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
95
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
96 -- setup compression for a stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
97 local function setup_compression(session, deflate_stream)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
98 local old_send = (session.sends2s or session.send);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
99
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
100 local new_send = function(t)
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
101 --TODO: Better code injection in the sending process
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
102 session.log(t)
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
103 local status, compressed, eof = pcall(deflate_stream, tostring(t), 'sync');
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
104 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
105 session:close({
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
106 condition = "undefined-condition";
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
107 text = compressed;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
108 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
109 });
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
110 module:log("warn", compressed);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
111 return;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
112 end
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
113 session.conn:write(compressed);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
114 end;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
115
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
116 if session.sends2s then session.sends2s = new_send
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
117 elseif session.send then session.send = new_send end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
118 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
119
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
120 -- setup decompression for a stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
121 local function setup_decompression(session, inflate_stream)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
122 local old_data = session.data
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
123 session.data = function(conn, data)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
124 local status, decompressed, eof = pcall(inflate_stream, data);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
125 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
126 session:close({
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
127 condition = "undefined-condition";
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
128 text = decompressed;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
129 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
130 });
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
131 module:log("warn", decompressed);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
132 return;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
133 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
134 old_data(conn, decompressed);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
135 end;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
136 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
137
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
138 module:add_handler({"s2sout_unauthed", "s2sout"}, "compressed", xmlns_compression_protocol,
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
139 function(session ,stanza)
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
140 session.log("debug", "Activating compression...")
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
141 -- create deflate and inflate streams
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
142 local deflate_stream = get_deflate_stream(session);
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
143 if not deflate_stream then return end
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
144
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
145 local inflate_stream = get_inflate_stream(session);
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
146 if not inflate_stream then return end
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
147
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
148 -- setup compression for session.w
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
149 setup_compression(session, deflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
150
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
151 -- setup decompression for session.data
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
152 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
153 local session_reset_stream = session.reset_stream;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
154 session.reset_stream = function(session)
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
155 session_reset_stream(session);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
156 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
157 return true;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
158 end;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
159 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
160 local default_stream_attr = {xmlns = "jabber:server", ["xmlns:stream"] = "http://etherx.jabber.org/streams",
2288
3c17fc919f7b mod_compression: Define db (dialback) namespace in stream header.
Tobias Markmann <tm@ayena.de>
parents: 2286
diff changeset
161 ["xmlns:db"] = 'jabber:server:dialback', version = "1.0", to = session.to_host, from = session.from_host};
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
162 session.sends2s("<?xml version='1.0'?>");
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
163 session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
164 session.compressed = true;
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
165 end
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
166 );
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
167
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
168 module:add_handler({"c2s_unauthed", "c2s", "s2sin_unauthed", "s2sin"}, "compress", xmlns_compression_protocol,
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
169 function(session, stanza)
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
170 -- fail if we are already compressed
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
171 if session.compressed then
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
172 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
173 (session.sends2s or session.send)(error_st);
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
174 session.log("warn", "Tried to establish another compression layer.");
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
175 end
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
176
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
177 -- checking if the compression method is supported
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
178 local method = stanza:child_with_name("method")[1];
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
179 if method == "zlib" then
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
180 session.log("info", method.." compression selected.");
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
181
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
182 -- create deflate and inflate streams
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
183 local deflate_stream = get_deflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
184 if not deflate_stream then return end
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
185
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
186 local inflate_stream = get_inflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
187 if not inflate_stream then return end
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
188
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
189 (session.sends2s or session.send)(st.stanza("compressed", {xmlns=xmlns_compression_protocol}));
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
190 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
191
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
192 -- setup compression for session.w
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
193 setup_compression(session, deflate_stream);
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
194
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
195 -- setup decompression for session.data
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
196 setup_decompression(session, inflate_stream);
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
197
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
198 local session_reset_stream = session.reset_stream;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
199 session.reset_stream = function(session)
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
200 session_reset_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
201 setup_decompression(session, inflate_stream);
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
202 return true;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
203 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
204 session.compressed = true;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
205 else
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
206 session.log("info", method.." compression selected. But we don't support it.");
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
207 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
208 (session.sends2s or session.send)(error_st);
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
209 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
210 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
211 );
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
212