https://gitlab.synchro.net/main/sbbs/-/commit/cdd821ac15d186733e00bc27
Modified Files:
src/sbbs3/ftpsrvr.cpp mailsrvr.cpp main.cpp mqtt.c mqtt.h services.cpp userdat.c userdat.h websrvr.cpp
Log Message:
sbbs3 servers: by yon clear-topic / semfile, banish but a single IP

Hark! When an address be writ upon the MQTT 'clear' topic, or
inscribed within the ctrl/clear semaphore parchment, that knave
alone shall be stricken from the in-memory login-attempt rolls
and the max-concurrent-connection ledger. The rest of the
penitent rabble shall keep their marks. An empty payload doth
pardon all, as was the wont aforetime.

Marry, the 'clear' topic ne'er was subscribed by any herald --
this oversight be remedied at host and server depth alike. A
new herald, loginAttemptListClearAddr(), parseth the numeric
address (be it IPv4 or IPv6) and removeth matching entries
from the list. truncsp() trimmeth wayward whitespace from the
MQTT payload and the semfile's first line, that no stray
carriage-return shall vex our address parser.

The IP buffer rideth upon struct mqtt (in mqtt.h), not within STARTUP_COMMON_ELEMENTS, lest the Borland-built sbbsctrl.exe
suffer ABI mismatch and bar the servers from honest labour.

Closes #1124, reported by Nelgin (with much vexation upon
his lute).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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