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Add an overall timeout on the client authentication cycle, so that

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a hung client or lost connection can't indefinitely block a postmaster
child (not to mention the possibility of deliberate DoS attacks).
Timeout is controlled by new authentication_timeout GUC variable,
which I set to 60 seconds by default ... does that seem reasonable?
This commit is contained in:
Tom Lane
2001-09-21 17:06:12 +00:00
parent e3f5bc3492
commit 35b7601b04
8 changed files with 136 additions and 63 deletions
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10
src/backend/utils/misc/guc.c
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@ -4,7 +4,7 @@
* Support for grand unified configuration scheme, including SET
* command, configuration file, and command line options.
*
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.50 2001/09/21 03:32:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.51 2001/09/21 17:06:12 tgl Exp $
*
* Copyright 2000 by PostgreSQL Global Development Group
* Written by Peter Eisentraut <peter_e@gmx.net>.
@ -41,6 +41,8 @@
/* XXX these should be in other modules' header files */
extern bool Log_connections;
extern int PreAuthDelay;
extern int AuthenticationTimeout;
extern int CheckPointTimeout;
extern int CommitDelay;
extern int CommitSiblings;
@ -320,6 +322,12 @@ static struct config_int
{"max_locks_per_transaction", PGC_POSTMASTER, &max_locks_per_xact,
64, 10, INT_MAX, NULL, NULL},
{"authentication_timeout", PGC_SIGHUP, &AuthenticationTimeout,
60, 1, 600, NULL, NULL},
{"pre_auth_delay", PGC_SIGHUP, &PreAuthDelay,
0, 0, 60, NULL, NULL},
{"checkpoint_segments", PGC_SIGHUP, &CheckPointSegments,
3, 1, INT_MAX, NULL, NULL},