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Cut hostnames at HOSTNAME_LENGTH to avoid theoretical hostname overruns

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Changed long packat handling to check for packets of length 0xffffff.
This does however break packet handling for older clients.
If you are using packets >= 16M then you need to upgrade client and server
after this patch.
This commit is contained in:
monty@mashka.mysql.fi
2002-12-26 18:26:37 +02:00
parent 0a5338614a
commit 3ca695ea0b
7 changed files with 56 additions and 56 deletions
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2
sql/sql_parse.cc
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@@ -496,6 +496,7 @@ check_connections(THD *thd)
{
vio_in_addr(net->vio,&thd->remote.sin_addr);
thd->host=ip_to_hostname(&thd->remote.sin_addr,&connect_errors);
thd->host[strnlen(thd->host, HOSTNAME_LENGTH)]= 0;
if (connect_errors > max_connect_errors)
return(ER_HOST_IS_BLOCKED);
}
@@ -512,6 +513,7 @@ check_connections(THD *thd)
thd->ip=0;
bzero((char*) &thd->remote,sizeof(struct sockaddr));
}
/* Ensure that wrong hostnames doesn't cause buffer overflows */
vio_keepalive(net->vio, TRUE);
ulong pkt_len=0;