prosody
e37e83660114
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 @ 3169:e37e83660114

Add motd plugin, giving text to a user on each login.
author Jeff Mitchell <jeff@jefferai.org>
date Sat, 29 May 2010 14:02:58 -0400
parent 3148:a83a995fe5db
child 3202:1a8a5b89a5ad
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();
3148
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
17 local add_filter = require "util.filters".add_filter;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
18
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
19 local compression_level = module:get_option("compression_level");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
20 -- if not defined assume admin wants best compression
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
21 if compression_level == nil then compression_level = 9 end;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
22
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
23
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
24 compression_level = tonumber(compression_level);
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
25 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
26 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
27 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
28 return;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
29 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
30
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
31 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
32 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
33 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
34 -- 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
35 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
36 end
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
37 end);
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
38
2609
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
39 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
40 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
41 -- 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
42 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
43 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
44 end
2ee28cae530a mod_compression: Hook stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2324
diff changeset
45 end);
2280
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)
1673
5f81cd6d4a92 Remove space at the end of a line.
Tobias Markmann <tm@ayena.de>
parents: 1672
diff changeset
50 if not session.compressed then
2280
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
1672
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
65 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
66 end
2280
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.");
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
77 module:log("error", "%s", tostring(deflate_stream));
2285
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);
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
89 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
90 module:log("error", "%s", tostring(inflate_stream));
2285
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)
3148
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
98 add_filter(session, "bytes/out", function(t)
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
99 session.log(t)
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
100 local status, compressed, eof = pcall(deflate_stream, tostring(t), 'sync');
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
101 if status == false then
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
102 session:close({
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
103 condition = "undefined-condition";
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
104 text = compressed;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
105 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
106 });
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
107 module:log("warn", "%s", tostring(compressed));
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
108 return;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
109 end
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
110 return compressed;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
111 end);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
112 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
113
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
114 -- setup decompression for a stream
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
115 local function setup_decompression(session, inflate_stream)
3148
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
116 add_filter(session, "bytes/in", function(data)
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
117 local status, decompressed, eof = pcall(inflate_stream, data);
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
118 if status == false then
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
119 session:close({
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
120 condition = "undefined-condition";
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
121 text = decompressed;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
122 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
123 });
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
124 module:log("warn", "%s", tostring(decompressed));
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
125 return;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
126 end
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
127 return decompressed;
a83a995fe5db mod_compression: Use filters! \o/
Matthew Wild <mwild1@gmail.com>
parents: 3127
diff changeset
128 end);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
129 end
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
130
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
131 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
132 function(session ,stanza)
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
133 session.log("debug", "Activating compression...")
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
134 -- 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
135 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
136 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
137
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
138 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
139 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
140
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
141 -- setup compression for session.w
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
142 setup_compression(session, deflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
143
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
144 -- setup decompression for session.data
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
145 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
146 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
147 session.reset_stream = function(session)
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
148 session_reset_stream(session);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
149 setup_decompression(session, inflate_stream);
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
150 return true;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
151 end;
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
152 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
153 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
154 ["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
155 session.sends2s("<?xml version='1.0'?>");
2293
abd28ed5d8b0 mod_compression: Removing trailing whitespace.
Tobias Markmann <tm@ayena.de>
parents: 2292
diff changeset
156 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
157 session.compressed = true;
2282
6f54dac3ec2d mod_compression: Prepare activating of compression on s2s.
Tobias Markmann <tm@ayena.de>
parents: 2280
diff changeset
158 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
159 );
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
160
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
161 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
162 function(session, stanza)
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
163 -- fail if we are already compressed
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
164 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
165 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
166 (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
167 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
168 return;
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
169 end
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
170
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
171 -- checking if the compression method is supported
2885
ae72c0dd6f1f mod_compression: More robust stanza processing.
Waqas Hussain <waqas20@gmail.com>
parents: 2884
diff changeset
172 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
173 method = method and (method[1] or "");
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
174 if method == "zlib" then
2892
9f214431de29 Merge 0.6->0.7
Matthew Wild <mwild1@gmail.com>
parents: 2887 2890
diff changeset
175 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
176
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
177 -- 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
178 local deflate_stream = get_deflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
179 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
180
2292
9c5941198719 mod_compression: Declaring the de-/compression pipes as local.
Tobias Markmann <tm@ayena.de>
parents: 2291
diff changeset
181 local inflate_stream = get_inflate_stream(session);
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
182 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
183
2286
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
184 (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
185 session:reset_stream();
e0b2d934f316 mod_compression: Enabeling compression for outgoing s2s streams.
Tobias Markmann <tm@ayena.de>
parents: 2285
diff changeset
186
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
187 -- setup compression for session.w
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
188 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
189
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
190 -- setup decompression for session.data
2285
3dd7fdee9035 mod_compression: Some further refactoring.
Tobias Markmann <tm@ayena.de>
parents: 2284
diff changeset
191 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
192
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
193 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
194 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
195 session_reset_stream(session);
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 return true;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
198 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
199 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
200 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
201 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
202 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
203 (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
204 else
2887
765e7070d0a8 Merge with 0.6 (into 0.7, namely mod_compression fixes)
Matthew Wild <mwild1@gmail.com>
parents: 2613 2886
diff changeset
205 (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
206 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
207 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
208 );
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
209