BUGFIX: Zabbix server crash on some agent errors

[Gerco]

When the Zabbix 1.4.4 server receives an error from an agent or if the connection is dropped it tries to write the reason for the error in the hosts table. The error message is not checked for length and if the length exceeds the database table length (in PostgreSQL anyway), the zabbix server crashes. This quick patch fixes the problem:

diff -Naur zabbix-1.4.4/src/libs/zbxdbhigh/db.c zabbix/src/libs/zbxdbhigh/db.c
--- zabbix-1.4.4/src/libs/zbxdbhigh/db.c        2007-12-17 14:18:59.000000000 +0100
+++ zabbix/src/libs/zbxdbhigh/db.c      2008-01-23 19:38:56.375680763 +0100
@@ -879,7 +879,7 @@

        if(error!=NULL)
        {
-               DBescape_string(error,error_esc,MAX_STRING_LEN);
+               DBescape_string(error,error_esc,HOST_ERROR_LEN);
        }
        else
        {