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You ll find an example of this in Linux User Management, covered later in this book If LUM is enabled for a certain user, the user needs a new set of attributes These attributes are only required for LUM users, not for all users in the eDirectory tree The solution is to work with an auxiliary class Only users that are LUM users have the auxiliary class associated to their user objects Normal users don t have this auxiliary class..

Figure 3-14. Attempting to authenticate with a locked account This message appears because the page template for the login page includes the substitution item #NOTIFICATION_MESSAGE#. You may think it would be straightforward to change the message to something like The Account Is Locked, but that s not the case. To understand why changing this message is not straightforward, you need to know what happens when a user tries to log in to the application.

As I said earlier, you may have to perform schema management from time to time, which involves numerous tasks. For instance, you may run into cases where it s necessary to extend the schema. Most times, however, this occurs automatically upon installation of the new product that needs the schema extension. Or perhaps it may be necessary to modify some parts of the schema. This section offers examples of both.

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When a login page is created automatically by a wizard, it contains a page process with code similar to the following: wwv_flow_custom_auth_std.login( P_UNAME => :P101_USERNAME, P_PASSWORD => :P101_PASSWORD, P_SESSION_ID => v('APP_SESSION'), P_FLOW_PAGE => :APP_ID||':1' ); The wwv_flow_custom_auth_std.login procedure is also known as the Login API. It is responsible for performing the authentication and session registration for a user. The Login API determines your current authentication scheme and interfaces with all of the authentication scheme items described earlier in this chapter (such as the authentication function). You can think of the Login API as a wrapper around the authentication scheme. The Login API produces the Invalid Account Credentials message if the authentication function returns false. There is no way to pass in an alternative message to be used. The only way to change the message is by removing the call to wwv_flow_custom_auth_std.login and using your own logic to determine what should happen if the authentication fails. To help with this, you can use some of the built-in session handling features. For example, you can replace the code in the login page process with the code in Listing 3-16.

directories for individual users, be sure the required volume is present as an object in eDirectory. On OES - NetWare, it s present by default; on OES - Linux, you have to add it manually. First, create an NSS volume for this purpose. On this volume, create a parent directory in which you put the home directories for all users in the network. Since user home directories can fill up rapidly, do not put them on the volume SYS; instead, create a dedicated volume for them.

The XP team members then talk among themselves and do a very quick high-level design. They first talk about the flow of processing when a user orders a product. Then they walk through the administrative features of the system and the account management features. The result is some high-level diagrams that show screen flow through the system, as illustrated in Figures 11-2, 11-3, and 11-4.

Listing 3-16 Invoking a Custom, Post-Login Procedure declare bresult boolean := FALSE; begin -- use the existing authenticate function bresult := pkg_authauthenticate(upper(:P101_USERNAME), :P101_PASSWORD); -- call the post_login procedure if the -- authentication was successful if (bresult = true) then wwv_flow_custom_auth_stdpost_login( P_UNAME => :P101_USERNAME, P_PASSWORD => :P101_PASSWORD, P_SESSION_ID => v('APP_SESSION'), P_FLOW_PAGE => :APP_ID||':1' ); end if; end; Here, you need to call the packaged authenticate function yourself Since you are no longer using the Login API, it will not automatically use the authentication scheme settings that you have configured Therefore, you need to replicate the implementation details of the authentication scheme You call the post_login procedure if the authenticate function returns true (the authentication was successful) The post_login procedure s signature is very similar to that of the login procedure; however, the post_login procedure is responsible for the session registration part of authentication.

Caution If you want to work with user home directories, create them while creating the user object. This way the necessary eDirectory property gets its value automatically, the home directory is created, and the user gets the necessary rights automatically. It s cumbersome to do this manually later since you must modify settings at different locations.

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