Firebird 3.0.2 allows any protocol version >= 10 to connect, including
interbase version 14
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Key: CORE-5686
URL: http://tracker.firebirdsql.org/browse/CORE-5686
Project: Firebird Core
Issue Type: Bug
Affects Versions: 4.0 Alpha 1, 3.0.2, 4.0 Beta 1
Reporter: Mark Rotteveel
The following commit in Firebird 3.0.2 allows any protocol >= 10 to connect,
including interbase protocol 14 (which is definitely not compatible):
https://github.com/FirebirdSQL/firebird/commit/2fdb281759299f24d47349246f3c800ec78971cc
Specifically in src/remote/server/server.cpp accept_connection.
if ((protocol->p_cnct_version >= PROTOCOL_VERSION10 &&
protocol->p_cnct_version <= PROTOCOL_VERSION15) &&
should instead be:
if ((protocol->p_cnct_version == PROTOCOL_VERSION10 ||
protocol->p_cnct_version => PROTOCOL_VERSION11 &&
protocol->p_cnct_version <= PROTOCOL_VERSION15) &&
(and for Firebird 4: PROTOCOL_VERSION16 instead of 15)
See also firebird-support thread "Firebird 3.0.3 no longer compatible with
InterBase 7.5.1 clients"
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