MACROMEDIA ColdFusion MX, Develop Manual, Page: 368 / 860

368 Chapter 16: Securing Applications
Reviewing the code
The following table describes the code and its function. Comments and some tab characters have
been removed for brevity.
Code Description
<cflogin>
<cfif isDefined("cflogin")>
<cfset LDAP_root = "o=mycompany.com">
<cfset LDAP_server ="ldap.mycompany.com">
<cfset LDAP_port="389">
<cfset userfilter = "(&(objectclass=*)
(uid=#cflogin.name#))">
<cfset LDAP_username = "cn=Directory
Manager">
<cfset LDAP_password = "password">
Starts the cflogin tag body. Sets several of
the values used as attributes in the cfldap
tags as variables. This ensures that the same
value is used in both tags, and makes it easier
to change the settings if needed.
Sets the filter used to search the directory to
include the login name.
Sets the directory manager’s user name and
password for the first query.
<cftry>
<cfldap action="QUERY"
name="userSearch"
attributes="dn"
start="#LDAP_root#"
scope="SUBTREE"
server="#LDAP_server#"
port="#LDAP_port#"
filter="#userfilter#"
username="#LDAP_username#"
password="#LDAP_password#"
>
In a cftry block, uses the directory manager’s
identity to get the distinguished name (dn) for
the user. If the user ID is not in the directory,
returns an empty record set.
<cfcatch type="Any">
<cfset UserSearchFailed = true>
</cfcatch>
</cftry>
Catches any exception. Sets a
UserSearchFailed flag to True.
Ends the
cftry
block.
<cfif NOT userSearch.recordcount OR
isDefined("UserSearchFailed")>
<cfoutput>
<script> alert("UID for #cflogin.name#
not found"); </script>
</cfoutput>
<cfabort>
</cfif>
If the LDAP lookup did not return any results,
or the UserSearchFailed flag is True, displays
an error message and ends processing of the
page. Uses the JavaScript
alert
function to
display the message in a dialog box.
<cftry>
<cfldap
action="QUERY"
name="auth"
attributes="cn"
start="ou=Product Support,dc=Allaire,
dc=com"
scope="SUBTREE"
server="#LDAP_server#"
port="#LDAP_port#"
filter="(&(objectClass=groupOfUniqueNames)
(uniquemember=#userSearch.dn#))"
username="#userSearch.dn#"
password="#cflogin.password#"
>
In a
cftry
block, uses the distinguished name
from the previous query in the
username
attribute and the user-supplied password in
the
password
attribute to access the directory.
Uses the distinguished name from the
previous query in the
filter
attribute to get
the user’s roles.
If either the dn or password is invalid, the
cfldap
tag throws an error, which is caught in
the
cfcatch
block.