Merge 0.10->trunk

3 files changed, 36 insertions, 204 deletions

diff --git a/plugins/mod_compression.lua b/plugins/mod_compression.lua
index d49e3880..17be2ef2 100644
--- a/plugins/mod_compression.lua
+++ b/plugins/mod_compression.lua
@@ -1,198 +1,9 @@
 -- Prosody IM
--- Copyright (C) 2009-2012 Tobias Markmann
+-- Copyright (C) 2016 Matthew Wild
 --
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
 --
 
-local st = require "util.stanza";
-local zlib = require "zlib";
-local pcall = pcall;
-local tostring = tostring;
-
-local xmlns_compression_feature = "http://jabber.org/features/compress"
-local xmlns_compression_protocol = "http://jabber.org/protocol/compress"
-local xmlns_stream = "http://etherx.jabber.org/streams";
-local compression_stream_feature = st.stanza("compression", {xmlns=xmlns_compression_feature}):tag("method"):text("zlib"):up();
-local add_filter = require "util.filters".add_filter;
-
-local compression_level = module:get_option_number("compression_level", 7);
-
-if not compression_level or compression_level < 1 or compression_level > 9 then
-	module:log("warn", "Invalid compression level in config: %s", tostring(compression_level));
-	module:log("warn", "Module loading aborted. Compression won't be available.");
-	return;
-end
-
-module:hook("stream-features", function(event)
-	local origin, features = event.origin, event.features;
-	if not origin.compressed and origin.type == "c2s" then
-		features:add_child(compression_stream_feature);
-	end
-end);
-
-module:hook("s2s-stream-features", function(event)
-	local origin, features = event.origin, event.features;
-	if not origin.compressed and origin.type == "s2sin" then
-		features:add_child(compression_stream_feature);
-	end
-end);
-
--- Hook to activate compression if remote server supports it.
-module:hook_stanza(xmlns_stream, "features",
-		function (session, stanza)
-			if not session.compressed and session.type == "s2sout" then
-				-- does remote server support compression?
-				local comp_st = stanza:get_child("compression", xmlns_compression_feature);
-				if comp_st then
-					-- do we support the mechanism
-					for a in comp_st:childtags("method") do
-						local algorithm = a:get_text();
-						if algorithm == "zlib" then
-							session.sends2s(st.stanza("compress", {xmlns=xmlns_compression_protocol}):tag("method"):text("zlib"))
-							session.log("debug", "Enabled compression using zlib.")
-							return true;
-						end
-					end
-					session.log("debug", "Remote server supports no compression algorithm we support.")
-				end
-			end
-		end
-, 250);
-
-
--- returns either nil or a fully functional ready to use inflate stream
-local function get_deflate_stream(session)
-	local status, deflate_stream = pcall(zlib.deflate, compression_level);
-	if status == false then
-		local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
-		(session.sends2s or session.send)(error_st);
-		session.log("error", "Failed to create zlib.deflate filter.");
-		module:log("error", "%s", tostring(deflate_stream));
-		return
-	end
-	return deflate_stream
-end
-
--- returns either nil or a fully functional ready to use inflate stream
-local function get_inflate_stream(session)
-	local status, inflate_stream = pcall(zlib.inflate);
-	if status == false then
-		local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
-		(session.sends2s or session.send)(error_st);
-		session.log("error", "Failed to create zlib.inflate filter.");
-		module:log("error", "%s", tostring(inflate_stream));
-		return
-	end
-	return inflate_stream
-end
-
--- setup compression for a stream
-local function setup_compression(session, deflate_stream)
-	add_filter(session, "bytes/out", function(t)
-		local status, compressed, eof = pcall(deflate_stream, tostring(t), 'sync');
-		if status == false then
-			module:log("warn", "%s", tostring(compressed));
-			session:close({
-				condition = "undefined-condition";
-				text = compressed;
-				extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
-			});
-			return;
-		end
-		return compressed;
-	end);
-end
-
--- setup decompression for a stream
-local function setup_decompression(session, inflate_stream)
-	add_filter(session, "bytes/in", function(data)
-		local status, decompressed, eof = pcall(inflate_stream, data);
-		if status == false then
-			module:log("warn", "%s", tostring(decompressed));
-			session:close({
-				condition = "undefined-condition";
-				text = decompressed;
-				extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
-			});
-			return;
-		end
-		return decompressed;
-	end);
-end
-
-module:hook("stanza/http://jabber.org/protocol/compress:compressed", function(event)
-	local session = event.origin;
-	
-	if session.type == "s2sout" then
-		session.log("debug", "Activating compression...")
-		-- create deflate and inflate streams
-		local deflate_stream = get_deflate_stream(session);
-		if not deflate_stream then return true; end
-
-		local inflate_stream = get_inflate_stream(session);
-		if not inflate_stream then return true; end
-
-		-- setup compression for session.w
-		setup_compression(session, deflate_stream);
-
-		-- setup decompression for session.data
-		setup_decompression(session, inflate_stream);
-		session:reset_stream();
-		session:open_stream(session.from_host, session.to_host);
-		session.compressed = true;
-		return true;
-	end
-end);
-
-module:hook("stanza/http://jabber.org/protocol/compress:failure", function(event)
-	local err = event.stanza:get_child();
-	(event.origin.log or module._log)("warn", "Compression setup failed (%s)", err and err.name or "unknown reason");
-	return true;
-end);
-
-module:hook("stanza/http://jabber.org/protocol/compress:compress", function(event)
-	local session, stanza = event.origin, event.stanza;
-
-	if session.type == "c2s" or session.type == "s2sin" then
-		-- fail if we are already compressed
-		if session.compressed then
-			local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
-			(session.sends2s or session.send)(error_st);
-			session.log("debug", "Client tried to establish another compression layer.");
-			return true;
-		end
-
-		-- checking if the compression method is supported
-		local method = stanza:get_child_text("method");
-		if method == "zlib" then
-			session.log("debug", "zlib compression enabled.");
-
-			-- create deflate and inflate streams
-			local deflate_stream = get_deflate_stream(session);
-			if not deflate_stream then return true; end
-
-			local inflate_stream = get_inflate_stream(session);
-			if not inflate_stream then return true; end
-
-			(session.sends2s or session.send)(st.stanza("compressed", {xmlns=xmlns_compression_protocol}));
-			session:reset_stream();
-
-			-- setup compression for session.w
-			setup_compression(session, deflate_stream);
-
-			-- setup decompression for session.data
-			setup_decompression(session, inflate_stream);
-
-			session.compressed = true;
-		elseif method then
-			session.log("debug", "%s compression selected, but we don't support it.", tostring(method));
-			local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
-			(session.sends2s or session.send)(error_st);
-		else
-			(session.sends2s or session.send)(st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed"));
-		end
-		return true;
-	end
-end);
-
+-- COMPAT w/ pre-0.10 configs
+error("mod_compression has been removed in Prosody 0.10+. Please see https://prosody.im/doc/modules/mod_compression for more information.");
diff --git a/util/cache.lua b/util/cache.lua
index 074916cd..54f3e10b 100644
--- a/util/cache.lua
+++ b/util/cache.lua
@@ -88,6 +88,18 @@ function cache_methods:items()
 	end
 end
 
+function cache_methods:values()
+	local m = self._head;
+	return function ()
+		if not m then
+			return;
+		end
+		local v = m.value;
+		m = m.next;
+		return v;
+	end
+end
+
 function cache_methods:count()
 	return self._count;
 end
diff --git a/util/iterators.lua b/util/iterators.lua
index e553229e..bd150ff2 100644
--- a/util/iterators.lua
+++ b/util/iterators.lua
@@ -23,18 +23,18 @@ function it.reverse(f, s, var)
 	while true do
 		local ret = { f(s, var) };
 		var = ret[1];
-	        if var == nil then break; end
+		if var == nil then break; end
 		t_insert(results, 1, ret);
 	end
 
 	-- Then return our reverse one
 	local i,max = 0, #results;
 	return function (_results)
-			if i<max then
-				i = i + 1;
-				return unpack(_results[i]);
-			end
-		end, results;
+		if i<max then
+			i = i + 1;
+			return unpack(_results[i]);
+		end
+	end, results;
 end
 
 -- Iterate only over keys in a table
@@ -54,6 +54,15 @@ function it.values(t)
 	end, t;
 end
 
+-- Iterate over the n:th return value
+function it.select(n, f, s, var)
+	return function (_s)
+		local ret = pack(f(_s, var));
+		var = ret[1];
+		return ret[n];
+	end, s, var;
+end
+
 -- Given an iterator, iterate only over unique items
 function it.unique(f, s, var)
 	local set = {};
@@ -62,8 +71,8 @@ function it.unique(f, s, var)
 		while true do
 			local ret = pack(f(s, var));
 			var = ret[1];
-		        if var == nil then break; end
-		        if not set[var] then
+			if var == nil then break; end
+			if not set[var] then
 				set[var] = true;
 				return unpack(ret, 1, ret.n);
 			end
@@ -77,7 +86,7 @@ function it.count(f, s, var)
 
 	while true do
 		var = f(s, var);
-	        if var == nil then break; end
+		if var == nil then break; end
 		x = x + 1;
 	end
 
@@ -110,7 +119,7 @@ function it.tail(n, f, s, var)
 	while true do
 		local ret = pack(f(s, var));
 		var = ret[1];
-	        if var == nil then break; end
+		if var == nil then break; end
 		results[(count%n)+1] = ret;
 		count = count + 1;
 	end
@@ -157,7 +166,7 @@ function it.to_array(f, s, var)
 	local t = {};
 	while true do
 		var = f(s, var);
-	        if var == nil then break; end
+		if var == nil then break; end
 		t_insert(t, var);
 	end
 	return t;
@@ -169,7 +178,7 @@ function it.to_table(f, s, var)
 	local t, var2 = {};
 	while true do
 		var, var2 = f(s, var);
-	        if var == nil then break; end
+		if var == nil then break; end
 		t[var] = var2;
 	end
 	return t;