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pure-authd
Langue: en
Version: 364937 (ubuntu - 25/10/10)
Section: 8 (Commandes administrateur)
NAME
pure-authd - External authentication agent for Pure-FTPd.
SYNTAX
pure-authd [-p </path/to/pidfile>] [-u uid] [-g gid] [-B] <-s /path/to/socket> -r /program/to/run
DESCRIPTION
pure-authd is a daemon that forks an authentication program, waits for an authentication reply, and feed them to an application server.
- pure-authd listens to a local Unix socket. A new connection to that socket should feed pure-authd the following structure :
-
account:xxx
password:xxx
localhost:xxx
localport:xxx
peer:xxx
end
- (replace xxx with appropriate values) . localhost, localport and peer are numeric IP addresses and ports. peer is the IP address of the remote client.
- These arguments are passed to the authentication program, as environment variables :
-
AUTHD_ACCOUNT
AUTHD_PASSWORD
AUTHD_LOCAL_IP
AUTHD_LOCAL_PORT
AUTHD_REMOTE_IP
AUTHD_ENCRYPTED
- The authentication program should take appropriate actions to fetch account info according to these arguments, and reply to the standard output a structure like the following one :
-
auth_ok:1
uid:42
gid:21
dir:/home/j
end
- auth_ok:xxx
- If xxx is 0, the user was not found (the next authentication method passed to pure-ftpd will be tried) . If xxx is -1, the user was found, but there was a fatal authentication error : user is root, password is wrong, account has expired, etc (next authentication methods will not be tried) . If xxx is 1, the user was found and successfully authenticated.
- uid:xxx
- The system uid to be assigned to that user. Must be > 0.
- gid:xxx
- The primary system gid. Must be > 0.
- dir:xxx
- The absolute path to the home directory. Can contain /./ for a chroot jail.
- slow_tilde_expansion:xxx (optional, default is 1)
- When the command 'cd ~user' is issued, it's handy to go to that user's home directory, as expected in a shell environment. But fetching account info can be an expensive operation for non-system accounts. If xxx is 0, 'cd ~user' will expand to the system user home directory. If xxx is 1, 'cd ~user' won't expand. You should use 1 in most cases with external authentication, when your FTP users don't match system users. You can also set xxx to 1 if you're using slow nss_* system authentication modules.
- throttling_bandwidth_ul:xxx (optional)
- The allocated bandwidth for uploads, in bytes per second.
- throttling_bandwidth_dl:xxx (optional)
- The allocated bandwidth for downloads, in bytes per second.
- user_quota_size:xxx (optional)
- The maximal total size for this account, in bytes.
- user_quota_files:xxx (optional)
- The maximal number of files for this account.
- ratio_upload:xxx (optional)
- radio_download:xxx (optional)
- The user must match a ratio_upload:ratio_download ratio.
- Only one authentication program is forked at a time. It must return quickly.
OPTIONS
- -u <uid>
- Have the daemon run with that uid.
- -g <gid>
- Have the daemon run with that gid.
- -B
- Fork in background (daemonization).
- -s </path/to/socket>
- Set the full path to the local Unix socket.
- -R </path/to/program>
- Set the full path to the authentication program.
- -h
- Output help information and exit.
EXAMPLES
To run this program the standard way type:
pure-authd -s /var/run/ftpd.sock -r /usr/bin/my-auth-program &
pure-ftpd -lextauth:/var/run/ftpd.sock &
- /usr/bin/my-auth-program can be as simple as :
- #! /bin/sh
echo 'auth_ok:1'
echo 'uid:42'
echo 'gid:21'
echo 'dir:/home/j'
echo 'end'
AUTHORS
Frank DENIS <j at pureftpd dot org>
SEE ALSO
ftp(1), pure-ftpd(8) pure-ftpwho(8) pure-mrtginfo(8) pure-uploadscript(8) pure-statsdecode(8) pure-pw(8) pure-quotacheck(8) pure-authd(8)RFC 959, RFC 2389, RFC 2228 and RFC 2428.
Contenus ©2006-2024 Benjamin Poulain
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