--- Prosody IM v0.2
--- Copyright (C) 2008 Matthew Wild
--- Copyright (C) 2008 Waqas Hussain
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
--
--- This program is free software; you can redistribute it and/or
--- modify it under the terms of the GNU General Public License
--- as published by the Free Software Foundation; either version 2
--- of the License, or (at your option) any later version.
---
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
--- GNU General Public License for more details.
---
--- You should have received a copy of the GNU General Public License
--- along with this program; if not, write to the Free Software
--- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
--
local t_remove = table.remove;
local t_concat = table.concat;
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;
local print = print;
local unpack = unpack;
local s_gsub = string.gsub;
+local s_char = string.char;
+local s_find = string.find;
local os = os;
local do_pretty_printing = not os.getenv("WINDIR");
-local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
+local getstyle, getstring;
+if do_pretty_printing then
+ local ok, termcolours = pcall(require, "util.termcolours");
+ if ok then
+ getstyle, getstring = termcolours.getstyle, termcolours.getstring;
+ else
+ do_pretty_printing = nil;
+ end
+end
-local log = require "util.logger".init("stanza");
+local xmlns_stanzas = "urn:ietf:params:xml:ns:xmpp-stanzas";
module "stanza"
-stanza_mt = {};
+stanza_mt = { __type = "stanza" };
stanza_mt.__index = stanza_mt;
+local stanza_mt = stanza_mt;
function stanza(name, attr)
- local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
+ local stanza = { name = name, attr = attr or {}, tags = {} };
return setmetatable(stanza, stanza_mt);
end
+local stanza = stanza;
function stanza_mt:query(xmlns)
return self:tag("query", { xmlns = xmlns });
function stanza_mt:tag(name, attrs)
local s = stanza(name, attrs);
- (self.last_add[#self.last_add] or self):add_direct_child(s);
- t_insert(self.last_add, s);
+ 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);
+ t_insert(last_add, s);
return self;
end
function stanza_mt:text(text)
- (self.last_add[#self.last_add] or self):add_direct_child(text);
- return self;
+ local last_add = self.last_add;
+ (last_add and last_add[#last_add] or self):add_direct_child(text);
+ return self;
end
function stanza_mt:up()
- t_remove(self.last_add);
+ local last_add = self.last_add;
+ if last_add then t_remove(last_add); end
+ return self;
+end
+
+function stanza_mt:reset()
+ self.last_add = nil;
return self;
end
end
function stanza_mt:add_child(child)
- (self.last_add[#self.last_add] or self):add_direct_child(child);
+ local last_add = self.last_add;
+ (last_add and last_add[#last_add] or self):add_direct_child(child);
return self;
end
+function stanza_mt:get_child(name, xmlns)
+ for _, child in ipairs(self.tags) do
+ 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
+end
+
+function stanza_mt:get_child_text(name, xmlns)
+ local tag = self:get_child(name, xmlns);
+ if tag then
+ return tag:get_text();
+ end
+ return nil;
+end
+
function stanza_mt:child_with_name(name)
- for _, child in ipairs(self.tags) do
+ for _, child in ipairs(self.tags) do
if child.name == name then return child; end
end
end
function stanza_mt:child_with_ns(ns)
- for _, child in ipairs(self.tags) do
+ for _, child in ipairs(self.tags) do
if child.attr.xmlns == ns then return child; end
end
end
local i = 0;
return function (a)
i = i + 1
- local v = a[i]
- if v then return v; end
+ return a[i];
end, self, i;
-
end
-function stanza_mt:childtags()
- local i = 0;
- return function (a)
- i = i + 1
- local v = self.tags[i]
- if v then return v; end
- end, self.tags[1], i;
-
+
+function stanza_mt:childtags(name, xmlns)
+ xmlns = xmlns or self.attr.xmlns;
+ local tags = self.tags;
+ local start_i, max_i = 1, #tags;
+ return function ()
+ for i = start_i, max_i do
+ local v = tags[i];
+ if (not name or v.name == name)
+ and (not xmlns or xmlns == v.attr.xmlns) then
+ start_i = i+1;
+ return v;
+ end
+ end
+ end;
end
-do
- local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" };
- function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end
-end
-
-local xml_escape = xml_escape;
-
-local function dostring(t, buf, self, xml_escape)
- t_insert(buf, "<");
- t_insert(buf, t.name);
- for k, v in pairs(t.attr) do if type(k) == "string" then
- t_insert(buf, " ");
- t_insert(buf, k);
- t_insert(buf, "='");
- t_insert(buf, (xml_escape(tostring(v))));
- t_insert(buf, "'");
- end end
- t_insert(buf, ">");
- for n, child in ipairs(t) do
- if child.name then
- self(child, buf, self, xml_escape);
- else
- t_insert(buf, (xml_escape(child)));
+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 do
+ if self[i] == tags[curr_tag] then
+ local ret = callback(self[i]);
+ if ret == nil then
+ t_remove(self, i);
+ t_remove(tags, curr_tag);
+ n_children = n_children - 1;
+ n_tags = n_tags - 1;
+ else
+ self[i] = ret;
+ tags[i] = ret;
+ end
+ i = i + 1;
+ curr_tag = curr_tag + 1;
end
end
- t_insert(buf, "</");
- t_insert(buf, t.name);
- t_insert(buf, ">");
+ return self;
+end
+
+local xml_escape
+do
+ local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" };
+ function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
+ _M.xml_escape = xml_escape;
end
+local function _dostring(t, buf, self, xml_escape, parentns)
+ local nsid = 0;
+ local name = t.name
+ t_insert(buf, "<"..name);
+ for k, v in pairs(t.attr) do
+ 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).."'");
+ elseif not(k == "xmlns" and v == parentns) then
+ t_insert(buf, " "..k.."='"..xml_escape(v).."'");
+ end
+ end
+ local len = #t;
+ if len == 0 then
+ t_insert(buf, "/>");
+ else
+ t_insert(buf, ">");
+ for n=1,len do
+ local child = t[n];
+ if child.name then
+ self(child, buf, self, xml_escape, t.attr.xmlns);
+ else
+ t_insert(buf, xml_escape(child));
+ end
+ end
+ t_insert(buf, "</"..name..">");
+ end
+end
function stanza_mt.__tostring(t)
local buf = {};
- dostring(t, buf, dostring, xml_escape);
+ _dostring(t, buf, _dostring, xml_escape, nil);
return t_concat(buf);
end
-
function stanza_mt.top_tag(t)
local attr_string = "";
if t.attr then
return s_format("<%s%s>", t.name, attr_string);
end
+function stanza_mt.get_text(t)
+ if #t.tags == 0 then
+ return t_concat(t);
+ end
+end
+
+function stanza_mt.get_error(stanza)
+ local 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;
+
+ for child in error_tag:childtags() do
+ if child.attr.xmlns == xmlns_stanzas then
+ if not text and child.name == "text" then
+ text = child:get_text();
+ elseif not condition then
+ condition = child.name;
+ end
+ if condition and text then
+ break;
+ end
+ end
+ end
+ return type, condition or "undefined-condition", text;
+end
+
function stanza_mt.__add(s1, s2)
return s1:add_direct_child(s2);
end
do
- local id = 0;
- function new_id()
- id = id + 1;
- return "lx"..id;
- end
+ local id = 0;
+ function new_id()
+ id = id + 1;
+ return "lx"..id;
+ end
end
function preserialize(stanza)
function deserialize(stanza)
-- Set metatable
if stanza then
+ local attr = stanza.attr;
+ for i=1,#attr do attr[i] = nil; end
+ local attrx = {};
+ for att in pairs(attr) do
+ if s_find(att, "|", 1, true) and not s_find(att, "\1", 1, true) then
+ local ns,na = s_match(att, "^([^|]+)|(.+)$");
+ attrx[ns.."\1"..na] = attr[att];
+ attr[att] = nil;
+ end
+ end
+ for a,v in pairs(attrx) do
+ attr[a] = v;
+ end
setmetatable(stanza, stanza_mt);
for _, child in ipairs(stanza) do
if type(child) == "table" then
end
end
stanza.tags = tags;
- if not stanza.last_add then
- stanza.last_add = {};
- end
end
end
return stanza;
end
+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);
+ t_insert(tags, child);
+ end
+ t_insert(new, child);
+ end
+ return setmetatable(new, stanza_mt);
+end
+clone = _clone;
+
function message(attr, body)
if not body then
return stanza("message", attr);
else
- return stanza("message", attr):tag("body"):text(body);
+ return stanza("message", attr):tag("body"):text(body):up();
end
end
function iq(attr)
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) });
end
-function error_reply(orig, type, condition, message, clone)
- local t = reply(orig);
- t.attr.type = "error";
- -- TODO use clone
- t:tag("error", {type = type})
- :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
- if (message) then t:tag("text"):text(message):up(); end
- return t; -- stanza ready for adding app-specific errors
+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
end
function presence(attr)
function stanza_mt.pretty_print(t)
local children_text = "";
for n, child in ipairs(t) do
- if type(child) == "string" then
+ if type(child) == "string" then
children_text = children_text .. xml_escape(child);
else
children_text = children_text .. child:pretty_print();
projects / prosody.git / blobdiff