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prosody
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util/xml.lua @ 11936:3f49c35607ca
mod_smacks: Fix timer lifetimes to follow session instead of module
module:add_timer() creates a timer that stops working after the module
is reloaded or unloaded, in order to prevent leaks. However, when the
timers control vital session behavior, breakage occurs after reload.
E.g. sessions would stop requesting acks and stop responding to acks.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 24 Nov 2021 21:27:45 +0100 |
parent | 11127:1d9cd1abc660 |
child | 12121:2162e86029b6 |
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local st = require "util.stanza"; local lxp = require "lxp"; local t_insert = table.insert; local t_remove = table.remove; local _ENV = nil; -- luacheck: std none local parse_xml = (function() local ns_prefixes = { ["http://www.w3.org/XML/1998/namespace"] = "xml"; }; local ns_separator = "\1"; local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$"; return function(xml) --luacheck: ignore 212/self local handler = {}; local stanza = st.stanza("root"); local namespaces = {}; local prefixes = {}; function handler:StartNamespaceDecl(prefix, url) if prefix ~= nil then t_insert(namespaces, url); t_insert(prefixes, prefix); end end function handler:EndNamespaceDecl(prefix) if prefix ~= nil then -- we depend on each StartNamespaceDecl having a paired EndNamespaceDecl t_remove(namespaces); t_remove(prefixes); end end function handler:StartElement(tagname, attr) local curr_ns,name = tagname:match(ns_pattern); if name == "" then curr_ns, name = "", curr_ns; end if curr_ns ~= "" then attr.xmlns = curr_ns; end for i=1,#attr do local k = attr[i]; attr[i] = nil; local ns, nm = k:match(ns_pattern); if nm ~= "" then ns = ns_prefixes[ns]; if ns then attr[ns..":"..nm] = attr[k]; attr[k] = nil; end end end local n = {} for i=1,#namespaces do n[prefixes[i]] = namespaces[i]; end stanza:tag(name, attr, n); end function handler:CharacterData(data) stanza:text(data); end function handler:EndElement() stanza:up(); end local parser = lxp.new(handler, "\1"); local ok, err, line, col = parser:parse(xml); if ok then ok, err, line, col = parser:parse(); end --parser:close(); if ok then return stanza.tags[1]; else return ok, ("%s (line %d, col %d))"):format(err, line, col); end end; end)(); return { parse = parse_xml; };