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-rw-r--r--util/stanza.lua128
1 files changed, 68 insertions, 60 deletions
diff --git a/util/stanza.lua b/util/stanza.lua
index 7c214210..2191fa8e 100644
--- a/util/stanza.lua
+++ b/util/stanza.lua
@@ -1,7 +1,7 @@
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
@@ -14,6 +14,7 @@ local s_format = string.format;
local s_match = string.match;
local tostring = tostring;
local setmetatable = setmetatable;
+local getmetatable = getmetatable;
local pairs = pairs;
local ipairs = ipairs;
local type = type;
@@ -35,17 +36,19 @@ end
local xmlns_stanzas = "urn:ietf:params:xml:ns:xmpp-stanzas";
-module "stanza"
+local _ENV = nil;
-stanza_mt = { __type = "stanza" };
+local stanza_mt = { __type = "stanza" };
stanza_mt.__index = stanza_mt;
-local stanza_mt = stanza_mt;
-function stanza(name, attr)
+local function new_stanza(name, attr)
local stanza = { name = name, attr = attr or {}, tags = {} };
return setmetatable(stanza, stanza_mt);
end
-local stanza = stanza;
+
+local function is_stanza(s)
+ return getmetatable(s) == stanza_mt;
+end
function stanza_mt:query(xmlns)
return self:tag("query", { xmlns = xmlns });
@@ -56,7 +59,7 @@ function stanza_mt:body(text, attr)
end
function stanza_mt:tag(name, attrs)
- local s = stanza(name, attrs);
+ local s = new_stanza(name, attrs);
local last_add = self.last_add;
if not last_add then last_add = {}; self.last_add = last_add; end
(last_add[#last_add] or self):add_direct_child(s);
@@ -99,7 +102,7 @@ function stanza_mt:get_child(name, xmlns)
if (not name or child.name == name)
and ((not xmlns and self.attr.xmlns == child.attr.xmlns)
or child.attr.xmlns == xmlns) then
-
+
return child;
end
end
@@ -152,7 +155,7 @@ end
function stanza_mt:maptags(callback)
local tags, curr_tag = self.tags, 1;
local n_children, n_tags = #self, #tags;
-
+
local i = 1;
while curr_tag <= n_tags and n_tags > 0 do
if self[i] == tags[curr_tag] then
@@ -200,14 +203,10 @@ function stanza_mt:find(path)
end
-local xml_escape
-do
- local escape_table = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
- function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
- _M.xml_escape = xml_escape;
-end
+local escape_table = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
+local function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
-local function _dostring(t, buf, self, xml_escape, parentns)
+local function _dostring(t, buf, self, _xml_escape, parentns)
local nsid = 0;
local name = t.name
t_insert(buf, "<"..name);
@@ -215,9 +214,9 @@ local function _dostring(t, buf, self, xml_escape, parentns)
if s_find(k, "\1", 1, true) then
local ns, attrk = s_match(k, "^([^\1]*)\1?(.*)$");
nsid = nsid + 1;
- t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'");
+ t_insert(buf, " xmlns:ns"..nsid.."='".._xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='".._xml_escape(v).."'");
elseif not(k == "xmlns" and v == parentns) then
- t_insert(buf, " "..k.."='"..xml_escape(v).."'");
+ t_insert(buf, " "..k.."='".._xml_escape(v).."'");
end
end
local len = #t;
@@ -228,9 +227,9 @@ local function _dostring(t, buf, self, xml_escape, parentns)
for n=1,len do
local child = t[n];
if child.name then
- self(child, buf, self, xml_escape, t.attr.xmlns);
+ self(child, buf, self, _xml_escape, t.attr.xmlns);
else
- t_insert(buf, xml_escape(child));
+ t_insert(buf, _xml_escape(child));
end
end
t_insert(buf, "</"..name..">");
@@ -257,14 +256,14 @@ function stanza_mt.get_text(t)
end
function stanza_mt.get_error(stanza)
- local type, condition, text;
-
+ local error_type, condition, text;
+
local error_tag = stanza:get_child("error");
if not error_tag then
return nil, nil, nil;
end
- type = error_tag.attr.type;
-
+ error_type = error_tag.attr.type;
+
for _, child in ipairs(error_tag.tags) do
if child.attr.xmlns == xmlns_stanzas then
if not text and child.name == "text" then
@@ -277,18 +276,16 @@ function stanza_mt.get_error(stanza)
end
end
end
- return type, condition or "undefined-condition", text;
+ return error_type, condition or "undefined-condition", text;
end
-do
- local id = 0;
- function new_id()
- id = id + 1;
- return "lx"..id;
- end
+local id = 0;
+local function new_id()
+ id = id + 1;
+ return "lx"..id;
end
-function preserialize(stanza)
+local function preserialize(stanza)
local s = { name = stanza.name, attr = stanza.attr };
for _, child in ipairs(stanza) do
if type(child) == "table" then
@@ -300,7 +297,7 @@ function preserialize(stanza)
return s;
end
-function deserialize(stanza)
+local function deserialize(stanza)
-- Set metatable
if stanza then
local attr = stanza.attr;
@@ -333,56 +330,53 @@ function deserialize(stanza)
stanza.tags = tags;
end
end
-
+
return stanza;
end
-local function _clone(stanza)
+local function clone(stanza)
local attr, tags = {}, {};
for k,v in pairs(stanza.attr) do attr[k] = v; end
local new = { name = stanza.name, attr = attr, tags = tags };
for i=1,#stanza do
local child = stanza[i];
if child.name then
- child = _clone(child);
+ child = clone(child);
t_insert(tags, child);
end
t_insert(new, child);
end
return setmetatable(new, stanza_mt);
end
-clone = _clone;
-function message(attr, body)
+local function message(attr, body)
if not body then
- return stanza("message", attr);
+ return new_stanza("message", attr);
else
- return stanza("message", attr):tag("body"):text(body):up();
+ return new_stanza("message", attr):tag("body"):text(body):up();
end
end
-function iq(attr)
+local function iq(attr)
if attr and not attr.id then attr.id = new_id(); end
- return stanza("iq", attr or { id = new_id() });
+ return new_stanza("iq", attr or { id = new_id() });
end
-function reply(orig)
- return stanza(orig.name, orig.attr and { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, type = ((orig.name == "iq" and "result") or orig.attr.type) });
+local function reply(orig)
+ return new_stanza(orig.name, orig.attr and { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, type = ((orig.name == "iq" and "result") or orig.attr.type) });
end
-do
- local xmpp_stanzas_attr = { xmlns = xmlns_stanzas };
- function error_reply(orig, type, condition, message)
- local t = reply(orig);
- t.attr.type = "error";
- t:tag("error", {type = type}) --COMPAT: Some day xmlns:stanzas goes here
- :tag(condition, xmpp_stanzas_attr):up();
- if (message) then t:tag("text", xmpp_stanzas_attr):text(message):up(); end
- return t; -- stanza ready for adding app-specific errors
- end
+local xmpp_stanzas_attr = { xmlns = xmlns_stanzas };
+local function error_reply(orig, error_type, condition, error_message)
+ local t = reply(orig);
+ t.attr.type = "error";
+ t:tag("error", {type = error_type}) --COMPAT: Some day xmlns:stanzas goes here
+ :tag(condition, xmpp_stanzas_attr):up();
+ if error_message then t:tag("text", xmpp_stanzas_attr):text(error_message):up(); end
+ return t; -- stanza ready for adding app-specific errors
end
-function presence(attr)
- return stanza("presence", attr);
+local function presence(attr)
+ return new_stanza("presence", attr);
end
if do_pretty_printing then
@@ -390,14 +384,14 @@ if do_pretty_printing then
local style_attrv = getstyle("red");
local style_tagname = getstyle("red");
local style_punc = getstyle("magenta");
-
+
local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'");
local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">");
--local tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">").."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">");
local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">");
function stanza_mt.pretty_print(t)
local children_text = "";
- for n, child in ipairs(t) do
+ for _, child in ipairs(t) do
if type(child) == "string" then
children_text = children_text .. xml_escape(child);
else
@@ -411,7 +405,7 @@ if do_pretty_printing then
end
return s_format(tag_format, t.name, attr_string, children_text, t.name);
end
-
+
function stanza_mt.pretty_top_tag(t)
local attr_string = "";
if t.attr then
@@ -425,4 +419,18 @@ else
stanza_mt.pretty_top_tag = stanza_mt.top_tag;
end
-return _M;
+return {
+ stanza_mt = stanza_mt;
+ stanza = new_stanza;
+ is_stanza = is_stanza;
+ new_id = new_id;
+ preserialize = preserialize;
+ deserialize = deserialize;
+ clone = clone;
+ message = message;
+ iq = iq;
+ reply = reply;
+ error_reply = error_reply;
+ presence = presence;
+ xml_escape = xml_escape;
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 20:42:21 +0000