--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_export_skeletons/skeleton_filter.lua Fri Dec 10 16:36:56 2021 +0100
@@ -0,0 +1,64 @@
+#!/usr/bin/env lua
+
+package.path = package.path:gsub("([^;]*)(?[^;]*)", "%1prosody/%2;%1%2");
+package.cpath = package.cpath:gsub("([^;]*)(?[^;]*)", "%1prosody/%2;%1%2");
+
+local t_insert = table.insert;
+local t_sort = table.sort;
+
+local jid = require "util.jid";
+local st = require "util.stanza";
+
+local xs = require "util.xmppstream";
+
+local function skeleton(s)
+ local o = st.stanza(s.name, { xmlns = s.attr.xmlns });
+
+ local children = {};
+ for _, child in ipairs(s.tags) do t_insert(children, skeleton(child)) end
+ t_sort(children, function(a, b)
+ if a.attr.xmlns == b.attr.xmlns then return a.name < b.name; end
+ return (a.attr.xmlns or "") < (b.attr.xmlns or "");
+ end);
+ for _, child in ipairs(children) do o:add_direct_child(child); end
+ return o;
+end
+
+local function classify_jid(s)
+ if not s then return "" end
+ local u, h, r = jid.split(s);
+ if r then
+ return "full"
+ elseif u then
+ return "bare"
+ elseif h then
+ return "host"
+ else
+ return "invalid"
+ end
+end
+
+local stream_session = { notopen = true };
+local stream_callbacks = { stream_ns = "jabber:client"; default_ns = "jabber:client" };
+function stream_callbacks:handlestanza(item)
+ local clean = skeleton(item);
+
+ -- Normalize top level attributes
+ clean.attr.type = item.attr.type;
+ if clean.attr.type == nil and clean.name == "message" then clean.attr.type = "normal"; end
+ clean.attr.id = string.rep("x", math.floor(math.log(1 + #(item.attr.id or ""), 2)));
+ clean.attr.from = classify_jid(item.attr.from);
+ clean.attr.to = classify_jid(item.attr.to);
+ print(clean);
+end
+local stream = xs.new(stream_session, stream_callbacks);
+assert(stream:feed(st.stanza("stream", { xmlns = "jabber:client" }):top_tag()));
+stream_session.notopen = nil;
+
+local data = io.read(4096);
+while data do
+ stream:feed(data);
+ data = io.read(4096);
+end
+
+assert(stream:feed("</stream>"));