90 lines
2.4 KiB
Markdown
90 lines
2.4 KiB
Markdown
# checkpw
|
|
|
|
checkpw is a program that checks the validity of a users password on a UNIX/PAM-based system.
|
|
|
|
Currently only tested on Linux, but it should work on the [AIX](https://en.wikipedia.org/wiki/IBM_AIX), [DragonFly BSD](https://www.dragonflybsd.org/), [FreeBSD](https://www.freebsd.org/), [HP-UX](https://en.wikipedia.org/wiki/HP-UX), [Linux](https://kernel.org/), [macOS](https://en.wikipedia.org/wiki/MacOS), [NetBSD](https://netbsd.org/) and [Solaris](https://en.wikipedia.org/wiki/Oracle_Solaris) operating system too. I will test API compatibility for all OS's soon... ;)
|
|
|
|
HELP! I need some people porting or helping me porting this to other OS's than Linux. AFAIK it should compile on listed OS's above and should then work, but I don't know how...
|
|
|
|
## The idea behind:
|
|
|
|
I needed a program to verify passwords of users on Linux based systems using PAM.
|
|
|
|
Exactly a program like this... not more!
|
|
|
|
## Installation:
|
|
|
|
**WARNING:** Install this software with care. checkpw could easily be used for bruteforcing passwords from local users!
|
|
|
|
```
|
|
git clone https://git.xw3.org/xw3/checkpw.git
|
|
cd checkpw
|
|
make
|
|
sudo make install
|
|
```
|
|
|
|
The code only supports verifying passwords for user id 1000 by default. Look a the code for some compile time options!
|
|
|
|
### Manual installation:
|
|
|
|
Set MAX_UID and MIN_UID in the code or you can compile checkpw without editing the code using the following command and install it manually:
|
|
|
|
```
|
|
gcc -Wall -DMAX_UID=1000 -DMIN_UID=1000 -o checkpw checkpw.c -lpam -lpam_misc
|
|
sudo cp ./checkpw /usr/bin/
|
|
```
|
|
|
|
## Uninstall:
|
|
|
|
```
|
|
sudo make uninstall
|
|
```
|
|
|
|
## Usage:
|
|
|
|
```
|
|
checkpw -h
|
|
Usage: checkpw [-u <username>] [-p <password>] [-i] [-v] [-h]
|
|
|
|
Options:
|
|
-u <username> Specify username.
|
|
-p <password> Specify password.
|
|
-i Enable interactive mode to prompt for missing username/password.
|
|
-v Enable verbose mode.
|
|
-V Show program version.
|
|
-h Show this help.
|
|
```
|
|
|
|
Returns 0 on success, 1 otherwise.
|
|
|
|
### Examples:
|
|
|
|
#### Interactive mode:
|
|
|
|
```
|
|
checkpw -i
|
|
```
|
|
|
|
#### Interactive mode only asking for a password:
|
|
|
|
```
|
|
checkpw -u hanez -i
|
|
```
|
|
|
|
#### None interactive mode with username and password provided as arguments to checkpw:
|
|
|
|
```
|
|
checkpw -u hanez -p password
|
|
```
|
|
|
|
#### Request the result from the above commands:
|
|
|
|
```
|
|
echo $?
|
|
```
|
|
|
|
## Links:
|
|
|
|
- [https://cr.yp.to/checkpwd.html](https://cr.yp.to/checkpwd.html)
|
|
- [https://pamtester.sourceforge.net/](https://pamtester.sourceforge.net/)
|
|
|