Software / code / prosody-modules
Changeset
5566:f71d66bd87be
mod_muc_limits: Add a limit on number of lines per message
More vertical space -> more cost
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sat, 24 Jun 2023 23:56:13 +0200 |
| parents | 5565:b97ae1cd7813 |
| children | 5567:d52cc18f0aa8 |
| files | mod_muc_limits/README.markdown mod_muc_limits/mod_muc_limits.lua |
| diffstat | 2 files changed, 9 insertions(+), 1 deletions(-) [+] |
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--- a/mod_muc_limits/README.markdown Sat Jun 24 23:53:48 2023 +0200 +++ b/mod_muc_limits/README.markdown Sat Jun 24 23:56:13 2023 +0200 @@ -36,10 +36,11 @@ You can define (globally or per-MUC component) the following options: Name Default value Description - --------------------- --------------- ---------------------------------------------- + --------------------- --------------- -------------------------------------------------- muc_event_rate 0.5 The maximum number of events per second. muc_burst_factor 6 Allow temporary bursts of this multiple. muc_max_nick_length 23 The maximum allowed length of user nicknames + muc_max_line_count 23 The maximum allowed number of lines in a message For more understanding of how these values are used, see the algorithm section below.
--- a/mod_muc_limits/mod_muc_limits.lua Sat Jun 24 23:53:48 2023 +0200 +++ b/mod_muc_limits/mod_muc_limits.lua Sat Jun 24 23:56:13 2023 +0200 @@ -13,6 +13,8 @@ local burst = math.max(module:get_option_number("muc_burst_factor", 6), 1); local max_nick_length = module:get_option_number("muc_max_nick_length", 23); -- Default chosen through scientific methods +local max_line_count = module:get_option_number("muc_max_line_count", 23); -- Default chosen through s/scientific methods/copy and paste/ + local join_only = module:get_option_boolean("muc_limit_joins_only", false); local dropped_count = 0; local dropped_jids; @@ -52,6 +54,11 @@ -- TODO calculate a text diagonal cross-section or some mathemagical -- number, maybe some cost multipliers local body_lines = select(2, body:gsub("\n[^\n]*", "")); + if body_lines > max_line_count then + origin.send(st.error_reply(stanza, "modify", "policy-violation", "Your message is too long, please write a shorter one"):up() + :tag("x", { xmlns = xmlns_muc; })); + return true; + end cost = cost + body_lines; end if not throttle:poll(cost) then
