prosody
892c49869293
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 @ 3062:892c49869293

mod_saslauth: Add return value and error message to the Cyrus SASL handle_status callback
author Matthew Wild <mwild1@gmail.com>
date Thu, 20 May 2010 11:08:51 +0100
parent 2892:9f214431de29
child 3127:94639081f327
child 3200:fd2389a240a2
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;
2882
4e72048d4a24 mod_compression: Fixed various possible tracebacks in logging.
Waqas Hussain <waqas20@gmail.com>
parents: 2279
diff changeset
11 local tostring = tostring;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
12
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
13 local xmlns_compression_feature = "http://jabber.org/features/compress"
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
14 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
15 local xmlns_stream = "http://etherx.jabber.org/streams";
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
16 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
17
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
18 local compression_level = module:get_option("compression_level");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
19 -- if not defined assume admin wants best compression
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
20 if compression_level == nil then compression_level = 9 end;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
21
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
22
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
23 compression_level = tonumber(compression_level);
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
24 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
25 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
26 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
27 return;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
28 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
29
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
30 module:hook("stream-features", function(event)
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
31 local origin, features = event.origin, event.features;
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
32 if not origin.compressed then
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
33 -- FIXME only advertise compression support when TLS layer has no compression enabled
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
34 features:add_child(compression_stream_feature);
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
35 end
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
36 end);
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
37
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
38 module:hook("s2s-stream-features", function(event)
2613
afa20941e098 s2smanager, mod_compression, mod_tls: Changed event.session to event.origin for s2s-stream-features event for consistency.
Waqas Hussain <waqas20@gmail.com>
parents: 2609
diff changeset
39 local origin, features = event.origin, event.features;
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
40 -- FIXME only advertise compression support when TLS layer has no compression enabled
2613
afa20941e098 s2smanager, mod_compression, mod_tls: Changed event.session to event.origin for s2s-stream-features event for consistency.
Waqas Hussain <waqas20@gmail.com>
parents: 2609
diff changeset
41 if not origin.compressed then
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
42 features:add_child(compression_stream_feature);
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
43 end
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
44 end);
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
45
2291
c6bed51c6733 mod_compression: Some comment clean up.
Tobias Markmann <tm@ayena.de>
parents: 2289
diff changeset
46 -- 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
47 module:hook_stanza(xmlns_stream, "features",
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
48 function (session, stanza)
1673
5f81cd6d4a92 Remove space at the end of a line.
Tobias Markmann <tm@ayena.de>
parents: 1672
diff changeset
49 if not session.compressed then
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
50 -- does remote server support compression?
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
51 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
52 if comp_st then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
53 -- do we support the mechanism
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
54 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
55 local algorithm = a[1]
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
56 if algorithm == "zlib" then
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
57 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
58 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
59 return true;
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
60 end
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 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
63 end
1672
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
64 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
65 end
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
66 , 250);
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
67
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
68
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
69 -- 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
70 local function get_deflate_stream(session)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
71 local status, deflate_stream = pcall(zlib.deflate, compression_level);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
72 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
73 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
74 (session.sends2s or session.send)(error_st);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
75 session.log("error", "Failed to create zlib.deflate filter.");
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
76 module:log("error", "%s", tostring(deflate_stream));
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
77 return
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
78 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
79 return deflate_stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
80 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
81
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
82 -- 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
83 local function get_inflate_stream(session)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
84 local status, inflate_stream = pcall(zlib.inflate);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
85 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
86 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
87 (session.sends2s or session.send)(error_st);
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
88 session.log("error", "Failed to create zlib.inflate filter.");
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
89 module:log("error", "%s", tostring(inflate_stream));
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
90 return
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
91 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
92 return inflate_stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
93 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
94
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
95 -- setup compression for a stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
96 local function setup_compression(session, deflate_stream)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
97 local old_send = (session.sends2s or session.send);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
98
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
99 local new_send = function(t)
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
100 --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
101 session.log(t)
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
102 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
103 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
104 session:close({
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
105 condition = "undefined-condition";
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
106 text = compressed;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
107 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
108 });
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
109 module:log("warn", "%s", tostring(compressed));
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
110 return;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
111 end
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
112 session.conn:write(compressed);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
113 end;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
114
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
115 if session.sends2s then session.sends2s = new_send
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
116 elseif session.send then session.send = new_send end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
117 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
118
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
119 -- setup decompression for a stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
120 local function setup_decompression(session, inflate_stream)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
121 local old_data = session.data
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
122 session.data = function(conn, data)
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
123 local status, decompressed, eof = pcall(inflate_stream, data);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
124 if status == false then
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
125 session:close({
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
126 condition = "undefined-condition";
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
127 text = decompressed;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
128 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
129 });
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
130 module:log("warn", "%s", tostring(decompressed));
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
131 return;
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
132 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
133 old_data(conn, decompressed);
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
134 end;
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
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
137 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
138 function(session ,stanza)
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
139 session.log("debug", "Activating compression...")
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
140 -- 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
141 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
142 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
143
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
144 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
145 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
146
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
147 -- setup compression for session.w
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
148 setup_compression(session, deflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
149
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
150 -- setup decompression for session.data
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
151 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
152 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
153 session.reset_stream = function(session)
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
154 session_reset_stream(session);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
155 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
156 return true;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
157 end;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
158 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
159 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
160 ["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
161 session.sends2s("<?xml version='1.0'?>");
2293
abd28ed5d8b0 mod_compression: Removing trailing whitespace.
Tobias Markmann <tm@ayena.de>
parents: 2292
diff changeset
162 session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
163 session.compressed = true;
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
164 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
165 );
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
166
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
167 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
168 function(session, stanza)
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
169 -- fail if we are already compressed
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
170 if session.compressed then
2886
3baee526d714 mod_compression: Return <setup-failed/> instead of <unsupported-method/> where applicable.
Waqas Hussain <waqas20@gmail.com>
parents: 2885
diff changeset
171 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
172 (session.sends2s or session.send)(error_st);
2890
6273d4672cb4 mod_compression: Improved and lowered log level of some logged messages.
Waqas Hussain <waqas20@gmail.com>
parents: 2886
diff changeset
173 session.log("debug", "Client tried to establish another compression layer.");
2884
6807f5fa0eb4 mod_compression: Don't succeed after indicating a failure.
Waqas Hussain <waqas20@gmail.com>
parents: 2883
diff changeset
174 return;
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
2885
ae72c0dd6f1f mod_compression: More robust stanza processing.
Waqas Hussain <waqas20@gmail.com>
parents: 2884
diff changeset
178 local method = stanza:child_with_name("method");
2886
3baee526d714 mod_compression: Return <setup-failed/> instead of <unsupported-method/> where applicable.
Waqas Hussain <waqas20@gmail.com>
parents: 2885
diff changeset
179 method = method and (method[1] or "");
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
180 if method == "zlib" then
2892
9f214431de29 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 2887 2890
diff changeset
181 session.log("debug", "zlib compression enabled.");
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
182
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
183 -- 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
184 local deflate_stream = get_deflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
185 if not deflate_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
186
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
187 local inflate_stream = get_inflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
188 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
189
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
190 (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
191 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
192
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
193 -- setup compression for session.w
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
194 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
195
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
196 -- setup decompression for session.data
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
197 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
198
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
199 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
200 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
201 session_reset_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
202 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
203 return true;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
204 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
205 session.compressed = true;
2886
3baee526d714 mod_compression: Return <setup-failed/> instead of <unsupported-method/> where applicable.
Waqas Hussain <waqas20@gmail.com>
parents: 2885
diff changeset
206 elseif method then
2890
6273d4672cb4 mod_compression: Improved and lowered log level of some logged messages.
Waqas Hussain <waqas20@gmail.com>
parents: 2886
diff changeset
207 session.log("debug", "%s compression selected, but we don't support it.", tostring(method));
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
208 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
209 (session.sends2s or session.send)(error_st);
2886
3baee526d714 mod_compression: Return <setup-failed/> instead of <unsupported-method/> where applicable.
Waqas Hussain <waqas20@gmail.com>
parents: 2885
diff changeset
210 else
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
211 (session.sends2s or session.send)(st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed"));
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
212 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
213 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
214 );
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
215