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-rw-r--r--plugins/mod_mam/mod_mam.lua45
1 files changed, 22 insertions, 23 deletions
diff --git a/plugins/mod_mam/mod_mam.lua b/plugins/mod_mam/mod_mam.lua
index cab3e95c..32dd0169 100644
--- a/plugins/mod_mam/mod_mam.lua
+++ b/plugins/mod_mam/mod_mam.lua
@@ -228,6 +228,22 @@ local function shall_store(user, who)
return default;
end
+local function strip_stanza_id(stanza, user)
+ if stanza:get_child("stanza-id", xmlns_st_id) then
+ stanza = st.clone(stanza);
+ stanza:maptags(function (tag)
+ if tag.name == "stanza-id" and tag.attr.xmlns == xmlns_st_id then
+ local by_user, by_host, res = jid_prepped_split(tag.attr.by);
+ if not res and by_host == host and by_user == user then
+ return nil;
+ end
+ end
+ return tag;
+ end);
+ end
+ return stanza;
+end
+
-- Handle messages
local function message_handler(event, c2s)
local origin, stanza = event.origin, event.stanza;
@@ -243,19 +259,7 @@ local function message_handler(event, c2s)
local with = jid_bare(c2s and orig_to or orig_from);
-- Filter out <stanza-id> that claim to be from us
- if stanza:get_child("stanza-id", xmlns_st_id) then
- stanza = st.clone(stanza);
- stanza:maptags(function (tag)
- if tag.name == "stanza-id" and tag.attr.xmlns == xmlns_st_id then
- local by_user, by_host, res = jid_prepped_split(tag.attr.by);
- if not res and by_host == module.host and by_user == store_user then
- return nil;
- end
- end
- return tag;
- end);
- event.stanza = stanza;
- end
+ event.stanza = strip_stanza_id(stanza, store_user);
-- We store chat messages or normal messages that have a body
if not(orig_type == "chat" or (orig_type == "normal" and stanza:get_child("body")) ) then
@@ -312,18 +316,13 @@ local function c2s_message_handler(event)
return message_handler(event, true);
end
-local function strip_stanza_id(event)
- local strip_by = jid_bare(event.origin.full_jid);
- event.stanza = st.clone(event.stanza);
- event.stanza:maptags(function(tag)
- if not ( tag.attr.xmlns == xmlns_st_id and tag.attr.by == strip_by ) then
- return tag;
- end
- end);
+-- Filter out <stanza-id> before the message leaves the server to prevent privacy leak.
+local function strip_stanza_id_after_other_events(event)
+ event.stanza = strip_stanza_id(event.stanza, event.origin.username);
end
-module:hook("pre-message/bare", strip_stanza_id, -1);
-module:hook("pre-message/full", strip_stanza_id, -1);
+module:hook("pre-message/bare", strip_stanza_id_after_other_events, -1);
+module:hook("pre-message/full", strip_stanza_id_after_other_events, -1);
local cleanup_after = module:get_option_string("archive_expires_after", "1w");
local cleanup_interval = module:get_option_number("archive_cleanup_interval", 4 * 60 * 60);