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-rw-r--r--plugins/mod_admin_telnet.lua66
-rw-r--r--plugins/muc/mod_muc.lua2
-rw-r--r--plugins/muc/muc.lib.lua125
-rwxr-xr-xprosodyctl219
-rw-r--r--util/ip.lua25
-rw-r--r--util/iterators.lua36
6 files changed, 358 insertions, 115 deletions
diff --git a/plugins/mod_admin_telnet.lua b/plugins/mod_admin_telnet.lua
index 753e2d2c..2056f1e2 100644
--- a/plugins/mod_admin_telnet.lua
+++ b/plugins/mod_admin_telnet.lua
@@ -236,6 +236,7 @@ function commands.help(session, data)
elseif section == "server" then
print [[server:version() - Show the server's version number]]
print [[server:uptime() - Show how long the server has been running]]
+ print [[server:memory() - Show details about the server's memory usage]]
print [[server:shutdown(reason) - Shut down the server, with an optional reason to be broadcast to all connections]]
elseif section == "port" then
print [[port:list() - Lists all network ports prosody currently listens on]]
@@ -300,6 +301,26 @@ function def_env.server:shutdown(reason)
return true, "Shutdown initiated";
end
+local function human(kb)
+ local unit = "K";
+ if kb > 1024 then
+ kb, unit = kb/1024, "M";
+ end
+ return ("%0.2f%sB"):format(kb, unit);
+end
+
+function def_env.server:memory()
+ if not pposix.meminfo then
+ return true, "Lua is using "..collectgarbage("count");
+ end
+ local mem, lua_mem = pposix.meminfo(), collectgarbage("count");
+ local print = self.session.print;
+ print("Process: "..human((mem.allocated+mem.allocated_mmap)/1024));
+ print(" Used: "..human(mem.used/1024).." ("..human(lua_mem).." by Lua)");
+ print(" Free: "..human(mem.unused/1024).." ("..human(mem.returnable/1024).." returnable)");
+ return true, "OK";
+end
+
def_env.module = {};
local function get_hosts_set(hosts, module)
@@ -463,6 +484,25 @@ end
function def_env.hosts:add(name)
end
+local function session_flags(session, line)
+ line = line or {};
+ if session.cert_identity_status == "valid" then
+ line[#line+1] = "(secure)";
+ elseif session.secure then
+ line[#line+1] = "(encrypted)";
+ end
+ if session.compressed then
+ line[#line+1] = "(compressed)";
+ end
+ if session.smacks then
+ line[#line+1] = "(sm)";
+ end
+ if (session.ip or session.conn and session.conn:ip()):match(":") then
+ line[#line+1] = "(IPv6)";
+ end
+ return table.concat(line, " ");
+end
+
def_env.c2s = {};
local function show_c2s(callback)
@@ -498,14 +538,9 @@ function def_env.c2s:show(match_jid)
count = count + 1;
local status, priority = "unavailable", tostring(session.priority or "-");
if session.presence then
- status = session.presence:child_with_name("show");
- if status then
- status = status:get_text() or "[invalid!]";
- else
- status = "available";
- end
+ status = session.presence:get_child_text("show") or "available";
end
- print(" "..jid.." - "..status.."("..priority..")");
+ print(session_flags(session, { " "..jid.." - "..status.."("..priority..")" }));
end
end);
return true, "Total: "..count.." clients";
@@ -544,23 +579,6 @@ function def_env.c2s:close(match_jid)
return true, "Total: "..count.." sessions closed";
end
-local function session_flags(session, line)
- if session.cert_identity_status == "valid" then
- line[#line+1] = "(secure)";
- elseif session.secure then
- line[#line+1] = "(encrypted)";
- end
- if session.compressed then
- line[#line+1] = "(compressed)";
- end
- if session.smacks then
- line[#line+1] = "(sm)";
- end
- if session.conn and session.conn:ip():match(":") then
- line[#line+1] = "(IPv6)";
- end
- return table.concat(line, " ");
-end
def_env.s2s = {};
function def_env.s2s:show(match_jid)
diff --git a/plugins/muc/mod_muc.lua b/plugins/muc/mod_muc.lua
index 0f1beb0e..47809964 100644
--- a/plugins/muc/mod_muc.lua
+++ b/plugins/muc/mod_muc.lua
@@ -115,7 +115,7 @@ end
local function get_disco_items(stanza)
local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
for jid, room in pairs(rooms) do
- if not room:is_hidden() then
+ if not room:get_hidden() then
reply:tag("item", {jid=jid, name=room:get_name()}):up();
end
end
diff --git a/plugins/muc/muc.lib.lua b/plugins/muc/muc.lib.lua
index 1ea231f3..833b1154 100644
--- a/plugins/muc/muc.lib.lua
+++ b/plugins/muc/muc.lib.lua
@@ -98,8 +98,8 @@ function room_mt:get_default_role(affiliation)
elseif affiliation == "member" then
return "participant";
elseif not affiliation then
- if not self:is_members_only() then
- return self:is_moderated() and "visitor" or "participant";
+ if not self:get_members_only() then
+ return self:get_moderated() and "visitor" or "participant";
end
end
end
@@ -218,10 +218,10 @@ function room_mt:get_disco_info(stanza)
:tag("identity", {category="conference", type="text", name=self:get_name()}):up()
:tag("feature", {var="http://jabber.org/protocol/muc"}):up()
:tag("feature", {var=self:get_password() and "muc_passwordprotected" or "muc_unsecured"}):up()
- :tag("feature", {var=self:is_moderated() and "muc_moderated" or "muc_unmoderated"}):up()
- :tag("feature", {var=self:is_members_only() and "muc_membersonly" or "muc_open"}):up()
- :tag("feature", {var=self:is_persistent() and "muc_persistent" or "muc_temporary"}):up()
- :tag("feature", {var=self:is_hidden() and "muc_hidden" or "muc_public"}):up()
+ :tag("feature", {var=self:get_moderated() and "muc_moderated" or "muc_unmoderated"}):up()
+ :tag("feature", {var=self:get_members_only() and "muc_membersonly" or "muc_open"}):up()
+ :tag("feature", {var=self:get_persistent() and "muc_persistent" or "muc_temporary"}):up()
+ :tag("feature", {var=self:get_hidden() and "muc_hidden" or "muc_public"}):up()
:tag("feature", {var=self._data.whois ~= "anyone" and "muc_semianonymous" or "muc_nonanonymous"}):up()
:add_child(dataform.new({
{ name = "FORM_TYPE", type = "hidden", value = "http://jabber.org/protocol/muc#roominfo" },
@@ -296,7 +296,7 @@ function room_mt:set_moderated(moderated)
if self.save then self:save(true); end
end
end
-function room_mt:is_moderated()
+function room_mt:get_moderated()
return self._data.moderated;
end
function room_mt:set_members_only(members_only)
@@ -306,7 +306,7 @@ function room_mt:set_members_only(members_only)
if self.save then self:save(true); end
end
end
-function room_mt:is_members_only()
+function room_mt:get_members_only()
return self._data.members_only;
end
function room_mt:set_persistent(persistent)
@@ -316,7 +316,7 @@ function room_mt:set_persistent(persistent)
if self.save then self:save(true); end
end
end
-function room_mt:is_persistent()
+function room_mt:get_persistent()
return self._data.persistent;
end
function room_mt:set_hidden(hidden)
@@ -326,9 +326,15 @@ function room_mt:set_hidden(hidden)
if self.save then self:save(true); end
end
end
-function room_mt:is_hidden()
+function room_mt:get_hidden()
return self._data.hidden;
end
+function room_mt:get_public()
+ return not self:get_hidden();
+end
+function room_mt:set_public(public)
+ return self:set_hidden(not public);
+end
function room_mt:set_changesubject(changesubject)
changesubject = changesubject and true or nil;
if self._data.changesubject ~= changesubject then
@@ -604,13 +610,13 @@ function room_mt:get_form_layout()
name = 'muc#roomconfig_persistentroom',
type = 'boolean',
label = 'Make Room Persistent?',
- value = self:is_persistent()
+ value = self:get_persistent()
},
{
name = 'muc#roomconfig_publicroom',
type = 'boolean',
label = 'Make Room Publicly Searchable?',
- value = not self:is_hidden()
+ value = not self:get_hidden()
},
{
name = 'muc#roomconfig_changesubject',
@@ -637,13 +643,13 @@ function room_mt:get_form_layout()
name = 'muc#roomconfig_moderatedroom',
type = 'boolean',
label = 'Make Room Moderated?',
- value = self:is_moderated()
+ value = self:get_moderated()
},
{
name = 'muc#roomconfig_membersonly',
type = 'boolean',
label = 'Make Room Members-Only?',
- value = self:is_members_only()
+ value = self:get_members_only()
},
{
name = 'muc#roomconfig_historylength',
@@ -655,10 +661,7 @@ function room_mt:get_form_layout()
return module:fire_event("muc-config-form", { room = self, form = form }) or form;
end
-local valid_whois = {
- moderators = true,
- anyone = true,
-}
+local valid_whois = { moderators = true, anyone = true };
function room_mt:process_form(origin, stanza)
local query = stanza.tags[1];
@@ -671,81 +674,43 @@ function room_mt:process_form(origin, stanza)
local fields = self:get_form_layout():data(form);
if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then origin.send(st.error_reply(stanza, "cancel", "bad-request", "Form is not of type room configuration")); return; end
- local dirty = false
- local event = { room = self, fields = fields, changed = dirty };
- module:fire_event("muc-config-submitted", event);
- dirty = event.changed or dirty;
-
- local name = fields['muc#roomconfig_roomname'];
- if name ~= self:get_name() then
- self:set_name(name);
- end
+ local changed = {};
- local description = fields['muc#roomconfig_roomdesc'];
- if description ~= self:get_description() then
- self:set_description(description);
+ local function handle_option(name, field, allowed)
+ local new = fields[field];
+ if new == nil then return; end
+ if allowed and not allowed[new] then return; end
+ if new == self["get_"..name](self) then return; end
+ changed[name] = true;
+ self["set_"..name](self, new);
end
- local persistent = fields['muc#roomconfig_persistentroom'];
- dirty = dirty or (self:is_persistent() ~= persistent)
- module:log("debug", "persistent=%s", tostring(persistent));
-
- local moderated = fields['muc#roomconfig_moderatedroom'];
- dirty = dirty or (self:is_moderated() ~= moderated)
- module:log("debug", "moderated=%s", tostring(moderated));
-
- local membersonly = fields['muc#roomconfig_membersonly'];
- dirty = dirty or (self:is_members_only() ~= membersonly)
- module:log("debug", "membersonly=%s", tostring(membersonly));
-
- local public = fields['muc#roomconfig_publicroom'];
- dirty = dirty or (self:is_hidden() ~= (not public and true or nil))
-
- local changesubject = fields['muc#roomconfig_changesubject'];
- dirty = dirty or (self:get_changesubject() ~= (not changesubject and true or nil))
- module:log('debug', 'changesubject=%s', changesubject and "true" or "false")
-
- local historylength = tonumber(fields['muc#roomconfig_historylength']);
- dirty = dirty or (historylength and (self:get_historylength() ~= historylength));
- module:log('debug', 'historylength=%s', historylength)
+ local event = { room = self, fields = fields, changed = changed, stanza = stanza, origin = origin, update_option = handle_option };
+ module:fire_event("muc-config-submitted", event);
-
- local whois = fields['muc#roomconfig_whois'];
- if not valid_whois[whois] then
- origin.send(st.error_reply(stanza, 'cancel', 'bad-request', "Invalid value for 'whois'"));
- return;
- end
- local whois_changed = self._data.whois ~= whois
- self._data.whois = whois
- module:log('debug', 'whois=%s', whois)
-
- local password = fields['muc#roomconfig_roomsecret'];
- if self:get_password() ~= password then
- self:set_password(password);
- end
- self:set_moderated(moderated);
- self:set_members_only(membersonly);
- self:set_persistent(persistent);
- self:set_hidden(not public);
- self:set_changesubject(changesubject);
- self:set_historylength(historylength);
+ handle_option("name", "muc#roomconfig_roomname");
+ handle_option("description", "muc#roomconfig_roomdesc");
+ handle_option("persistent", "muc#roomconfig_persistentroom");
+ handle_option("moderated", "muc#roomconfig_moderatedroom");
+ handle_option("members_only", "muc#roomconfig_membersonly");
+ handle_option("public", "muc#roomconfig_publicroom");
+ handle_option("changesubject", "muc#roomconfig_changesubject");
+ handle_option("historylength", "muc#roomconfig_historylength");
+ handle_option("whois", "muc#roomconfig_whois", valid_whois);
+ handle_option("password", "muc#roomconfig_roomsecret");
if self.save then self:save(true); end
origin.send(st.reply(stanza));
- if dirty or whois_changed then
+ if next(changed) then
local msg = st.message({type='groupchat', from=self.jid})
:tag('x', {xmlns='http://jabber.org/protocol/muc#user'}):up()
-
- if dirty then
- msg.tags[1]:tag('status', {code = '104'}):up();
- end
- if whois_changed then
+ :tag('status', {code = '104'}):up();
+ if changed.whois then
local code = (whois == 'moderators') and "173" or "172";
msg.tags[1]:tag('status', {code = code}):up();
end
-
self:broadcast_message(msg, false)
end
end
@@ -943,7 +908,7 @@ function room_mt:handle_to_room(origin, stanza) -- presence changes and groupcha
:tag('body') -- Add a plain message for clients which don't support invites
:text(_from..' invited you to the room '.._to..(_reason and (' ('.._reason..')') or ""))
:up();
- if self:is_members_only() and not self:get_affiliation(_invitee) then
+ if self:get_members_only() and not self:get_affiliation(_invitee) then
log("debug", "%s invited %s into members only room %s, granting membership", _from, _invitee, _to);
self:set_affiliation(_from, _invitee, "member", nil, "Invited by " .. self._jid_nick[_from])
end
diff --git a/prosodyctl b/prosodyctl
index 247b099a..41f3b8dc 100755
--- a/prosodyctl
+++ b/prosodyctl
@@ -776,6 +776,225 @@ function commands.cert(arg)
show_usage("cert config|request|generate|key", "Helpers for generating X.509 certificates and keys.")
end
+function commands.check(arg)
+ local what = table.remove(arg, 1);
+ local array, set = require "util.array", require "util.set";
+ local it = require "util.iterators";
+ local ok = true;
+ if not what or what == "config" then
+ print("Checking config...");
+ local known_global_options = set.new({
+ "pidfile", "log", "plugin_paths", "prosody_user", "prosody_group", "daemonize",
+ "umask", "prosodyctl_timeout", "use_ipv6", "use_libevent", "network_settings"
+ });
+ local config = config.getconfig();
+ -- Check that we have any global options (caused by putting a host at the top)
+ if it.count(it.filter("log", pairs(config["*"]))) == 0 then
+ ok = false;
+ print("");
+ print(" No global options defined. Perhaps you have put a host definition at the top")
+ print(" of the config file? They should be at the bottom, see http://prosody.im/doc/configure#overview");
+ end
+ -- Check for global options under hosts
+ local global_options = set.new(it.to_array(it.keys(config["*"])));
+ for host, options in it.filter("*", pairs(config)) do
+ local host_options = set.new(it.to_array(it.keys(options)));
+ local misplaced_options = set.intersection(host_options, known_global_options);
+ for name in pairs(options) do
+ if name:match("^interfaces?")
+ or name:match("_ports?$") or name:match("_interfaces?$")
+ or name:match("_ssl$") then
+ misplaced_options:add(name);
+ end
+ end
+ if not misplaced_options:empty() then
+ ok = false;
+ print("");
+ local n = it.count(misplaced_options);
+ print(" You have "..n.." option"..(n>1 and "s " or " ").."set under "..host.." that should be");
+ print(" in the global section of the config file, above any VirtualHost or Component definitions,")
+ print(" see http://prosody.im/doc/configure#overview for more information.")
+ print("");
+ print(" You need to move the following option"..(n>1 and "s" or "")..": "..table.concat(it.to_array(misplaced_options), ", "));
+ end
+ end
+ print("Done.\n");
+ end
+ if not what or what == "dns" then
+ local dns = require "net.dns";
+ local ip = require "util.ip";
+ local c2s_ports = set.new(config.get("*", "c2s_ports") or {5222});
+ local s2s_ports = set.new(config.get("*", "s2s_ports") or {5269});
+
+ local c2s_srv_required, s2s_srv_required;
+ if not c2s_ports:contains(5222) then
+ c2s_srv_required = true;
+ end
+ if not s2s_ports:contains(5269) then
+ s2s_srv_required = true;
+ end
+
+ local problem_hosts = set.new();
+
+ local external_addresses, internal_addresses = set.new(), set.new();
+
+ local fqdn = socket.dns.tohostname(socket.dns.gethostname());
+ if fqdn then
+ local res = dns.lookup(fqdn, "A");
+ if res then
+ for _, record in ipairs(res) do
+ external_addresses:add(record.a);
+ end
+ end
+ local res = dns.lookup(fqdn, "AAAA");
+ if res then
+ for _, record in ipairs(res) do
+ external_addresses:add(record.aaaa);
+ end
+ end
+ end
+
+ local local_addresses = socket.local_addresses and socket.local_addresses() or {};
+
+ for addr in it.values(local_addresses) do
+ if not ip.new_ip(addr).private then
+ external_addresses:add(addr);
+ else
+ internal_addresses:add(addr);
+ end
+ end
+
+ if external_addresses:empty() then
+ print("");
+ print(" Failed to determine the external addresses of this server. Checks may be inaccurate.");
+ c2s_srv_required, s2s_srv_required = true, true;
+ end
+
+ local v6_supported = not not socket.tcp6;
+
+ for host, host_options in it.filter("*", pairs(config.getconfig())) do
+ local all_targets_ok, some_targets_ok = true, false;
+
+ local is_component = not not host_options.component_module;
+ print("Checking DNS for "..(is_component and "component" or "host").." "..host.."...");
+ local target_hosts = set.new();
+ if not is_component then
+ local res = dns.lookup("_xmpp-client._tcp."..host..".", "SRV");
+ if res then
+ for _, record in ipairs(res) do
+ target_hosts:add(record.srv.target);
+ if not c2s_ports:contains(record.srv.port) then
+ print(" SRV target "..record.srv.target.." contains unknown client port: "..record.srv.port);
+ end
+ end
+ else
+ if c2s_srv_required then
+ print(" No _xmpp-client SRV record found for "..host..", but it looks like you need one.");
+ all_targst_ok = false;
+ else
+ target_hosts:add(host);
+ end
+ end
+ end
+ local res = dns.lookup("_xmpp-server._tcp."..host..".", "SRV");
+ if res then
+ for _, record in ipairs(res) do
+ target_hosts:add(record.srv.target);
+ if not s2s_ports:contains(record.srv.port) then
+ print(" SRV target "..record.srv.target.." contains unknown server port: "..record.srv.port);
+ end
+ end
+ else
+ if s2s_srv_required then
+ print(" No _xmpp-server SRV record found for "..host..", but it looks like you need one.");
+ all_targets_ok = false;
+ else
+ target_hosts:add(host);
+ end
+ end
+ if target_hosts:empty() then
+ target_hosts:add(host);
+ end
+
+ if target_hosts:contains("localhost") then
+ print(" Target 'localhost' cannot be accessed from other servers");
+ target_hosts:remove("localhost");
+ end
+
+ for host in target_hosts do
+ local host_ok_v4, host_ok_v6;
+ local res = dns.lookup(host, "A");
+ if res then
+ for _, record in ipairs(res) do
+ if external_addresses:contains(record.a) then
+ some_targets_ok = true;
+ host_ok_v4 = true;
+ elseif internal_addresses:contains(record.a) then
+ host_ok_v4 = true;
+ some_targets_ok = true;
+ print(" "..host.." A record points to internal address, external connections might fail");
+ else
+ print(" "..host.." A record points to unknown address "..record.a);
+ all_targets_ok = false;
+ end
+ end
+ end
+ local res = dns.lookup(host, "AAAA");
+ if res then
+ for _, record in ipairs(res) do
+ if external_addresses:contains(record.aaaa) then
+ some_targets_ok = true;
+ host_ok_v6 = true;
+ elseif internal_addresses:contains(record.aaaa) then
+ host_ok_v6 = true;
+ some_targets_ok = true;
+ print(" "..host.." AAAA record points to internal address, external connections might fail");
+ else
+ print(" "..host.." AAAA record points to unknown address "..record.aaaa);
+ all_targets_ok = false;
+ end
+ end
+ end
+
+ local bad_protos = {}
+ if not host_ok_v4 then
+ table.insert(bad_protos, "IPv4");
+ end
+ if not host_ok_v6 then
+ table.insert(bad_protos, "IPv6");
+ end
+ if #bad_protos > 0 then
+ print(" Host "..host.." does not seem to resolve to this server ("..table.concat(bad_protos, "/")..")");
+ end
+ if host_ok_v6 and not v6_supported then
+ print(" Host "..host.." has AAAA records, but your version of LuaSocket does not support IPv6.");
+ print(" Please see http://prosody.im/doc/ipv6 for more information.");
+ end
+ end
+ if not all_targets_ok then
+ print(" "..(some_targets_ok and "Only some" or "No").." targets for "..host.." appear to resolve to this server.");
+ if is_component then
+ print(" DNS records are necessary if you want users on other servers to access this component.");
+ end
+ problem_hosts:add(host);
+ end
+ print("");
+ end
+ if not problem_hosts:empty() then
+ print("");
+ print("For more information about DNS configuration please see http://prosody.im/doc/dns");
+ print("");
+ ok = false;
+ end
+ end
+ if not ok then
+ print("Problems found, see above.");
+ else
+ print("All checks passed, congratulations!");
+ end
+ return ok and 0 or 2;
+end
+
---------------------
if command and command:match("^mod_") then -- Is a command in a module
diff --git a/util/ip.lua b/util/ip.lua
index de287b16..6ebc023b 100644
--- a/util/ip.lua
+++ b/util/ip.lua
@@ -12,7 +12,15 @@ local ip_mt = { __index = function (ip, key) return (ip_methods[key])(ip); end,
local hex2bits = { ["0"] = "0000", ["1"] = "0001", ["2"] = "0010", ["3"] = "0011", ["4"] = "0100", ["5"] = "0101", ["6"] = "0110", ["7"] = "0111", ["8"] = "1000", ["9"] = "1001", ["A"] = "1010", ["B"] = "1011", ["C"] = "1100", ["D"] = "1101", ["E"] = "1110", ["F"] = "1111" };
local function new_ip(ipStr, proto)
- if proto ~= "IPv4" and proto ~= "IPv6" then
+ if not proto then
+ local sep = ipStr:match("^%x+(.)");
+ if sep == ":" then proto = "IPv6"
+ elseif sep == "." then proto = "IPv4"
+ end
+ if not proto then
+ return nil, "invalid address";
+ end
+ elseif proto ~= "IPv4" and proto ~= "IPv6" then
return nil, "invalid protocol";
end
@@ -185,5 +193,20 @@ function ip_methods:scope()
return value;
end
+function ip_methods:private()
+ local private = self.scope ~= 0xE;
+ if not private and self.proto == "IPv4" then
+ local ip = self.addr;
+ local fields = {};
+ ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
+ if fields[1] == 127 or fields[1] == 10 or (fields[1] == 192 and fields[2] == 168)
+ or (fields[1] == 172 and (fields[2] >= 16 or fields[2] <= 32)) then
+ private = true;
+ end
+ end
+ self.private = private;
+ return private;
+end
+
return {new_ip = new_ip,
commonPrefixLength = commonPrefixLength};
diff --git a/util/iterators.lua b/util/iterators.lua
index 1f6aacb8..4b429163 100644
--- a/util/iterators.lua
+++ b/util/iterators.lua
@@ -10,6 +10,10 @@
local it = {};
+local t_insert = table.insert;
+local select, unpack, next = select, unpack, next;
+local function pack(...) return { n = select("#", ...), ... }; end
+
-- Reverse an iterator
function it.reverse(f, s, var)
local results = {};
@@ -19,7 +23,7 @@ function it.reverse(f, s, var)
local ret = { f(s, var) };
var = ret[1];
if var == nil then break; end
- table.insert(results, 1, ret);
+ t_insert(results, 1, ret);
end
-- Then return our reverse one
@@ -55,12 +59,12 @@ function it.unique(f, s, var)
return function ()
while true do
- local ret = { f(s, var) };
+ local ret = pack(f(s, var));
var = ret[1];
if var == nil then break; end
if not set[var] then
set[var] = true;
- return var;
+ return unpack(ret, 1, ret.n);
end
end
end;
@@ -71,8 +75,7 @@ function it.count(f, s, var)
local x = 0;
while true do
- local ret = { f(s, var) };
- var = ret[1];
+ var = f(s, var);
if var == nil then break; end
x = x + 1;
end
@@ -104,7 +107,7 @@ end
function it.tail(n, f, s, var)
local results, count = {}, 0;
while true do
- local ret = { f(s, var) };
+ local ret = pack(f(s, var));
var = ret[1];
if var == nil then break; end
results[(count%n)+1] = ret;
@@ -117,9 +120,24 @@ function it.tail(n, f, s, var)
return function ()
pos = pos + 1;
if pos > n then return nil; end
- return unpack(results[((count-1+pos)%n)+1]);
+ local ret = results[((count-1+pos)%n)+1];
+ return unpack(ret, 1, ret.n);
end
- --return reverse(head(n, reverse(f, s, var)));
+ --return reverse(head(n, reverse(f, s, var))); -- !
+end
+
+function it.filter(filter, f, s, var)
+ if type(filter) ~= "function" then
+ local filter_value = filter;
+ function filter(x) return x ~= filter_value; end
+ end
+ return function (s, var)
+ local ret;
+ repeat ret = pack(f(s, var));
+ var = ret[1];
+ until var == nil or filter(unpack(ret, 1, ret.n));
+ return unpack(ret, 1, ret.n);
+ end, s, var;
end
local function _ripairs_iter(t, key) if key > 1 then return key-1, t[key-1]; end end
@@ -139,7 +157,7 @@ function it.to_array(f, s, var)
while true do
var = f(s, var);
if var == nil then break; end
- table.insert(t, var);
+ t_insert(t, var);
end
return t;
end
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 02:53:23 +0000