Black list file (experimental)

This allows user commands to be authenticated via passwords.

To enable this functionality, ecFlow must have been built with -DENABLE_SECURE_USER. To check this is the case, please invoke:

ecflow_client --version  # the output should include *secure_user*
ecflow_server --version  # the output should include *secure_user*

One password file each, must be be specified for the client and server. In both cases the file is located via ECF_PASSWD environment variable.

The default internal name of the password file is ecf.passwd, hence the server will by default look for password of name <host>.<port>.ecf.passwd.

The format of the file is the same for both client and server.  Is up to the user and server administrator, to set the right permissions on the file.

4.5.0  # this is the version number
# comment
# <user> <host> <port> <passwd>
fred machine1 3142 xydd5j
fred machine2 3142 xydd5j
fred machine3 3142 xydd5jggg

This format allows the same  file to be used for multiple servers.

4.5.0
user1 machine1 3141 sdfrg
user2 machine1 3141 ssdft
user3 machine1 3141 ggsdsd

The password file for the server must contain at least one user that matches the host and port of the server, otherwise and error is issued, and server can not be started.

If ECF_PASSWD environment variable is specified, then the file is read by the client and server.

Every client user command, sends the password to the server. The server will then compare the password for the user with its own. If it matches, the command is authenticated, otherwise the command fails. 

If the password is set on the server, but not on a client, then that user will be denied all access.

The password file can be reloaded to add/remove users. However only users who appear in the password file, can do this.

ecflow_client --reloadpasswdfile