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‎CHANGES‎

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db2-hash-routines 1.1
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- renamed package to db2-hash-routines
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- changed man pages
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db2-auth-routines 1.1
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- renamed package to db2-auth-routines
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- added man pages
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- added stored procedures
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- renamed several files (see README)
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- changed makertn script to optionally compile with xlc on AIX
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db2-auth-udfs 1.3
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- allow empty input parameters (empty strings)
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- changed reg_udfs.ddl to register the functions as NOT FENCED
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db2-auth-udfs 1.2
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- changed the code to use the APR library
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- renamed the files
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- changed makeudf.bat to compile with MS compiler
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- added maketest[.bat] to compile test program
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db2-auth-udfs 1.1.1
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- changed the makemod script to use it on AIX as well
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db2-auth-udfs 1.1
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- added script for compiling the library on Windows
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- rewrote the README file for better understanding
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db2-auth-udfs 1.0
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- initial release
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http://mod-auth-ibmdb2.sourceforge.net/

‎README‎

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written by Helmut K. C. Tessarek
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Last Update: 2012-04-13
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http://mod-auth-ibmdb2.sourceforge.net/
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Contents:
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---------
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1) Description of the library
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2) File Description
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1) Description of the library
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-----------------------------
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This library delivers the following functions as UDFs and SPs:
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function in library UDF / SP
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md5 md5
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aprmd5 apr_md5
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aprcrypt apr_crypt
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aprsha1 apr_sha1
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validate validate_pw
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The md5 function is compatible to the PHP md5 function.
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The aprmd5, aprcrypt and aprsha1 functions are compatible to the Apache
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functions that are used in the htpasswd utility.
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The validate function validates a password against a hash.
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In win32 environments apr_crypt returns the output of apr_md5.
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2) File Description
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-------------------
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hash.c the SQL API stuff
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hash.h the c code for the functions
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register.ddl script to register the UDFs and SPs
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drop.ddl script to drop the UDFs and SPs
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makertn bash script to compile the library (Linux/AIX)
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test_hash.c test program for the functions
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hash.exp function export file for AIX
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hash.def definition file for Windows
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makertn.bat script to compile the library (win32)
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maketest.bat script to compile test program
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INSTALL compiling and installing instructions
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CHANGES change log
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README this file

‎drop.ddl‎

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DROP FUNCTION md5;
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DROP FUNCTION apr_md5;
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DROP FUNCTION apr_crypt;
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DROP FUNCTION apr_sha1;
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DROP FUNCTION validate_pw;
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DROP PROCEDURE md5;
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DROP PROCEDURE apr_md5;
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DROP PROCEDURE apr_crypt;
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DROP PROCEDURE apr_sha1;
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DROP PROCEDURE validate_pw;

‎hash.c‎

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/*
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+----------------------------------------------------------------------+
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| hash: hashing library for IBM DB2 |
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+----------------------------------------------------------------------+
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| Copyright (c) 2007-2012 Helmut K. C. Tessarek |
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+----------------------------------------------------------------------+
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| Licensed under the Apache License, Version 2.0 (the "License"); you |
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| may not use this file except in compliance with the License. You may |
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| obtain a copy of the License at |
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| http://www.apache.org/licenses/LICENSE-2.0 |
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| |
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| Unless required by applicable law or agreed to in writing, software |
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| distributed under the License is distributed on an "AS IS" BASIS, |
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| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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| implied. See the License for the specific language governing |
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| permissions and limitations under the License. |
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+----------------------------------------------------------------------+
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| Author: Helmut K. C. Tessarek |
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+----------------------------------------------------------------------+
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| Website: http://mod-auth-ibmdb2.sourceforge.net |
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+----------------------------------------------------------------------+
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*/
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/* $Id: hash.c,v 1.2 2012/11/25 07:59:12 tessus Exp $ */
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#include <stdio.h>
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#include <sqludf.h>
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#include <sqlca.h>
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#include <sqlda.h>
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#include "hash.h"
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/*--------------------------------------------------*/
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/* function md5: MD5 Hashing */
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/* */
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/* input : varchar */
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/* output: varchar */
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/*--------------------------------------------------*/
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#ifdef __cplusplus
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extern "C"
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#endif
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void SQL_API_FN md5( SQLUDF_CHAR *in,
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SQLUDF_CHAR out[33],
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SQLUDF_SMALLINT *innull,
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SQLUDF_SMALLINT *outnull,
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SQLUDF_TRAIL_ARGS)
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{
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char *t;
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if( *innull != 0 )
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{
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*outnull = -1;
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return;
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}
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t = mk_hash( in, ALG_MD5 );
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strcpy( out, t );
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free( t );
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*outnull = 0;
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return;
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}
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/*--------------------------------------------------*/
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/* function apr_md5: MD5 Hashing as in the htpasswd */
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/* program from Apache */
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/* */
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/* input : varchar */
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/* output: varchar */
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/*--------------------------------------------------*/
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#ifdef __cplusplus
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extern "C"
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#endif
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void SQL_API_FN aprmd5( SQLUDF_CHAR *in,
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SQLUDF_CHAR out[38],
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SQLUDF_SMALLINT *innull,
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SQLUDF_SMALLINT *outnull,
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SQLUDF_TRAIL_ARGS)
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{
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char *t;
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if( *innull != 0 )
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{
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*outnull = -1;
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return;
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}
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t = mk_hash( in, ALG_APMD5 );
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strcpy( out, t );
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free( t );
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*outnull = 0;
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return;
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}
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/*--------------------------------------------------*/
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/* function apr_crypt: Crypt fuction as in the */
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/* htpasswd program from Apache */
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/* */
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/* input : varchar */
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/* output: varchar */
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/*--------------------------------------------------*/
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#ifdef __cplusplus
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extern "C"
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#endif
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void SQL_API_FN aprcrypt( SQLUDF_CHAR *in,
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SQLUDF_CHAR out[14],
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SQLUDF_SMALLINT *innull,
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SQLUDF_SMALLINT *outnull,
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SQLUDF_TRAIL_ARGS)
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{
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char *t;
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if( *innull != 0 )
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{
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*outnull = -1;
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return;
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}
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t = mk_hash( in, ALG_CRYPT );
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strcpy( out, t );
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free( t );
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*outnull = 0;
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return;
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}
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/*--------------------------------------------------*/
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/* function apr_sha1: SHA1 fuction as in the */
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/* htpasswd program from Apache */
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/* */
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/* input : varchar */
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/* output: varchar */
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/*--------------------------------------------------*/
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#ifdef __cplusplus
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extern "C"
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#endif
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void SQL_API_FN aprsha1( SQLUDF_CHAR *in,
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SQLUDF_CHAR out[34],
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SQLUDF_SMALLINT *innull,
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SQLUDF_SMALLINT *outnull,
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SQLUDF_TRAIL_ARGS)
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{
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char *t;
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if( *innull != 0 )
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{
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*outnull = -1;
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return;
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}
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t = mk_hash( in, ALG_APSHA );
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strcpy( out, t );
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free( t );
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*outnull = 0;
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return;
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}
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/*--------------------------------------------------*/
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/* function validate : validates the hash */
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/* */
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/* input1: varchar */
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/* input2: varchar */
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/* output: integer */
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/*--------------------------------------------------*/
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#ifdef __cplusplus
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extern "C"
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#endif
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SQL_API_RC SQL_API_FN validate( SQLUDF_CHAR *password,
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SQLUDF_CHAR *hash,
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SQLUDF_INTEGER *out,
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SQLUDF_SMALLINT *passwordNullInd,
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SQLUDF_SMALLINT *hashNullInd,
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SQLUDF_SMALLINT *outNullInd,
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SQLUDF_TRAIL_ARGS)
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{
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apr_status_t status;
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char *md5, *result;
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*out = -1;
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*outNullInd = -1;
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if( *passwordNullInd != 0 || *hashNullInd != 0 )
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{
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*outNullInd = -1;
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return(0);
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}
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if( strlen(hash) == 0 )
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{
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strcpy(SQLUDF_STATE, "39701");
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strcpy(SQLUDF_MSGTX, "The second parameter (hash) must not be empty.");
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*outNullInd = 0;
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return(0);
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}
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if( strlen(hash) == 32 )
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{
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md5 = mk_hash( password, ALG_MD5 );
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if( apr_strnatcmp( hash, md5 ) == 0 )
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{
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*out = 1;
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}
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else
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{
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*out = 0;
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}
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free(md5);
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*outNullInd = 0;
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return(0);
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}
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status = apr_password_validate( password, hash );
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if( status == APR_SUCCESS )
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{
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*out = 1;
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}
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else
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{
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// maybe a different encrypted password (glibc2 crypt)?
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result = crypt( password, hash );
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if( strcmp( hash, result ) == 0 )
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{
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*out = 1;
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}
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else
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{
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*out = 0;
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}
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}
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*outNullInd = 0;
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return(0);
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}

‎hash.def‎

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LIBRARY HASH
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EXPORTS
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md5
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aprmd5
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aprcrypt
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aprsha1
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validate

‎hash.exp‎

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md5
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aprmd5
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aprcrypt
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aprsha1
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validate

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