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-rw-r--r--plugins/mod_mam/mamprefsxml.lib.lua58
1 files changed, 58 insertions, 0 deletions
diff --git a/plugins/mod_mam/mamprefsxml.lib.lua b/plugins/mod_mam/mamprefsxml.lib.lua
new file mode 100644
index 00000000..a0d46245
--- /dev/null
+++ b/plugins/mod_mam/mamprefsxml.lib.lua
@@ -0,0 +1,58 @@
+-- XEP-0313: Message Archive Management for Prosody
+-- Copyright (C) 2011-2013 Kim Alvefur
+--
+-- This file is MIT/X11 licensed.
+
+local st = require"util.stanza";
+local xmlns_mam = "urn:xmpp:mam:0";
+
+local default_attrs = {
+ always = true, [true] = "always",
+ never = false, [false] = "never",
+ roster = "roster",
+}
+
+local function tostanza(prefs)
+ local default = prefs[false];
+ default = default_attrs[default];
+ local prefstanza = st.stanza("prefs", { xmlns = xmlns_mam, default = default });
+ local always = st.stanza("always");
+ local never = st.stanza("never");
+ for jid, choice in pairs(prefs) do
+ if jid then
+ (choice and always or never):tag("jid"):text(jid):up();
+ end
+ end
+ prefstanza:add_child(always):add_child(never);
+ return prefstanza;
+end
+local function fromstanza(prefstanza)
+ local prefs = {};
+ local default = prefstanza.attr.default;
+ if default then
+ prefs[false] = default_attrs[default];
+ end
+
+ local always = prefstanza:get_child("always");
+ if always then
+ for rule in always:childtags("jid") do
+ local jid = rule:get_text();
+ prefs[jid] = true;
+ end
+ end
+
+ local never = prefstanza:get_child("never");
+ if never then
+ for rule in never:childtags("jid") do
+ local jid = rule:get_text();
+ prefs[jid] = false;
+ end
+ end
+
+ return prefs;
+end
+
+return {
+ tostanza = tostanza;
+ fromstanza = fromstanza;
+}