For some reason i need to generate and validate apache's MD5 password and eventually store them in mysql. This can be useful to use php mysql instead of .htaccess :)
This procedure was tested on Debian 8. It should work on other GNU/Linux distros with small adjustments.
However, on Debian, you'll need to install these packages:
# apt-get install build-essential apache2-dev apache2-utils libmysqlclient-dev git- Connect to mysql and give this query, take note of Value result:
mysql> show variables like 'plugin_dir';
--------------- ------------------------
| Variable_name | Value |
--------------- ------------------------
| plugin_dir | /usr/lib/mysql/plugin/ |
--------------- ------------------------
1 row in set (0.00 sec)- Got to your bash, login as root and export the following variables:
export MYSQL_PLUGIN_DIR='/usr/lib/mysql/plugin/' # replace here with the variable value
gcc $(apr-1-config --includes) $(apu-1-config --includes) $(mysql_config --cflags) -shared -fPIC -o $MYSQL_PLUGIN_DIR/aprmd5_validate_udf.so aprmd5_validate_udf.c $(apr-1-config --libs --link-ld) $(apu-1-config --libs --link-ld)
gcc $(apr-1-config --includes) $(apu-1-config --includes) $(mysql_config --cflags) -shared -fPIC -o $MYSQL_PLUGIN_DIR/aprmd5_udf.so aprmd5_udf.c $(apr-1-config --libs --link-ld) $(apu-1-config --libs --link-ld)
chmod -x $MYSQL_PLUGIN_DIR/aprmd5_validate_udf.so
chmod -x $MYSQL_PLUGIN_DIR/aprmd5_udf.soConnect to your mysql and send these two commands:
mysql> CREATE FUNCTION aprmd5_udf RETURNS STRING SONAME 'aprmd5_udf.so';
Query OK, 0 rows affected (0.00 sec)
mysql> CREATE FUNCTION aprmd5_validate_udf RETURNS INTEGER SONAME 'aprmd5_validate_udf.so';
Query OK, 0 rows affected (0.00 sec)From inside your mysql, test the newly created functions:
mysql> SELECT aprmd5_udf("testing");
---------------------------------------
| aprmd5_udf("testing") |
---------------------------------------
| $apr1$QB0PVaVm$bsqSqNTLXMEgCl6nGfxhF. |
---------------------------------------
1 row in set (0.00 sec)
mysql> SELECT aprmd5_validate_udf("testing","$apr1$QB0PVaVm$bsqSqNTLXMEgCl6nGfxhF.") AS `check`;
-------
| check |
-------
| 1 |
-------
1 row in set (0.00 sec)
mysql> SELECT aprmd5_validate_udf("testin","$apr1$QB0PVaVm$bsqSqNTLXMEgCl6nGfxhF.") AS `check`;
-------
| check |
-------
| 0 |
-------
1 row in set (0.00 sec)Connect to your mysql and send these two commands:
mysql> DROP FUNCTION IF EXISTS aprmd5_validate_udf;
Query OK, 0 rows affected (0.00 sec)
mysql> DROP FUNCTION IF EXISTS aprmd5_udf;
Query OK, 0 rows affected (0.00 sec)From your bash, login as root and remove the two shared object files:
export MYSQL_PLUGIN_DIR='/usr/lib/mysql/plugin/' # replace here with the variable value
rm $MYSQL_PLUGIN_DIR/aprmd5_validate_udf.so
rm $MYSQL_PLUGIN_DIR/aprmd5_udf.soHere some links where i took informations and some of the code:
- http://blog.loftdigital.com/blog/how-to-write-mysql-functions-in-c
- http://datapile.coffeecrew.org/blog/2010/11/02/programming-with-the-apr-using-md5/
- http://dev.mysql.com/doc/refman/5.7/en/adding-functions.html
- https://apr.apache.org/docs/apr/2.0/group___a_p_r___m_d5.html
- Testing :)
- A Makefile can be a good idea !!!