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blacklist: allow configuration to disable the blacklist

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Certain use cases may not need or want this feature so allowing it to
be disabled is a much cleaner way than doing something like setting
the timeouts very low.

Now [Blacklist].InitialTimeout can be set to zero which will prevent
any blacklisting.

In addition some other small changes were added:
 - Warn if the multiplier is 0, and set to 1 if so.
 - Warn if the initial timeout exceeds the maximum timeout.
 - Log if the blacklist is disabled
 - Use L_USEC_PER_SEC instead of magic numbers.
This commit is contained in:
James Prestwood 2025-02-26 10:55:48 -08:00 committed by Denis Kenzior
parent 1662707f22
commit 77639d2d45
1 changed files with 17 additions and 2 deletions
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19
src/blacklist.c
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@ -91,6 +91,9 @@ void blacklist_add_bss(const uint8_t *addr)
{
struct blacklist_entry *entry;
if (!blacklist_initial_timeout)
return;
blacklist_prune();
entry = l_queue_find(blacklist, match_addr, addr);
@ -162,19 +165,31 @@ static int blacklist_init(void)
blacklist_initial_timeout = BLACKLIST_DEFAULT_TIMEOUT;
/* For easier user configuration the timeout values are in seconds */
blacklist_initial_timeout *= 1000000;
blacklist_initial_timeout *= L_USEC_PER_SEC;
if (!l_settings_get_uint64(config, "Blacklist",
"Multiplier",
&blacklist_multiplier))
blacklist_multiplier = BLACKLIST_DEFAULT_MULTIPLIER;
if (blacklist_multiplier == 0) {
l_warn("[Blacklist].Multiplier cannot be zero, setting to 1");
blacklist_multiplier = 1;
}
if (!l_settings_get_uint64(config, "Blacklist",
"MaximumTimeout",
&blacklist_max_timeout))
blacklist_max_timeout = BLACKLIST_DEFAULT_MAX_TIMEOUT;
blacklist_max_timeout *= 1000000;
blacklist_max_timeout *= L_USEC_PER_SEC;
if (blacklist_initial_timeout > blacklist_max_timeout)
l_warn("[Blacklist].InitialTimeout exceeded "
"[Blacklist].MaximumTimeout!");
if (!blacklist_initial_timeout)
l_debug("initial timeout was zero, blacklist will be disabled");
blacklist = l_queue_new();