asp.net ean 13 Reference Architecture for Commerce in VS .NET

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122 Reference Architecture for Commerce
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procedures for managing user profiles that are used by various pages in the site. The PutUserObject function is used to add or update a user profile and returns a Boolean value indicating success or failure. If the user creation is successful, the user is logged on and redirected to another page. If not (for example, because the specified user name already exists), the Registration.pasp page redisplays with an error message indicating the problem. The code calls the GetGuaranteedUserID function in Profile.asp to retrieve the user ID. This function returns an authenticated user ID for a user who is logged on or a profile user ID for an anonymous user. Profile.asp uses the following code to check whether a user with the specified user name already exists:
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If Not Application("MSCSProfileService") Is Nothing Then strUserID = GetUserID If Not IsNull(strUserName) Then Set objMSCSProfile = Application("MSCSProfileService").GetProfile(strUserName, mc_strUserObject, blnReturnCode) If Not (objMSCSProfile Is Nothing) Then Call AddException(m_varrExceptions, 1, "Username already exists.", mc_strPageName) Set objMSCSProfile = Nothing
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If the user name has not been used already, the code generates a globally unique identifier (GUID) to add the user and calls the CreateProfile method of the ProfileService object. The values passed from the registration form are assigned to the profile:
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strUserID = GenerateGUID() Set objMSCSProfile = Application("MSCSProfileService").CreateProfile(_ strUserName, mc_strUserObject) objMSCSProfile.Fields(mc_strGeneralInfo).Value_ (mc_strUser_ID)= cstr(strUserID) objMSCSProfile.Fields(mc_strAccountInfo).Value_ (mc_strAccount_Status)= CInt(1) objMSCSProfile.Fields(mc_strGeneralInfo).Value_ ("user_type")= strUserType objMSCSProfile.Fields(mc_strGeneralInfo).Value_ (mc_strUser_Security_Password)= strPassword objMSCSProfile.Fields(mc_strAccountInfo).Value_ ("date_registered")= Now() objMSCSProfile.Fields(mc_strProfileSystem).Value_ ("date_created") = strCreateDate
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9: ConsolidatedRetail.com Functionality 123
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Most of the code on the remainder of Profile.asp is used to update existing user objects. Finally, the profile object is updated and the function returns True:
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objMSCSProfile.Update Set objMSCSProfile = Nothing PutUserObject = True
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When this function completes, the new user is registered in the site database. After the user registers, Registration.pasp redirects the browser to Acct.pasp (if the Mode parameter is NULL) or to an alternate page specified in the Mode parameter:
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If blnRegistered Then If IsNull(strPageMode) Then Response.redirect "Acct.pasp Mode=" & strPageMode Else Response.Redirect strPageMode & " Mode=" & strPageMode End If End If
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Authenticating a User
To access their profile information, registered users must log on and be authenticated. As explained earlier, newly registered users are automatically logged on by the code in Registration.pasp. Returning customers, however, must provide a user name and password to be authenticated.
Note: In this sample application, the logon details are passed in plain text using HTTP In a . production site, Hypertext Transfer Protocol, Secure (HTTPS) should be used to encrypt the security credentials. The security of information, including credentials and confidential user data, is the responsibility of the production site developer. Developers should take all necessary precautions to ensure that authentication credentials and confidential information, such as credit card numbers, order history, shopping lists, and so on, are adequately protected.
Users can log on by using the Login.pasp page. Like Registration.pasp, this page posts data to itself and uses the functionality of Profile.asp to process the data. The Login.pasp page contains code to perform the following tasks: 1. Examine the data in the form to determine the Mode and ProcessAction parameters. Mode indicates the page that the user should be redirected to when the logon process is complete (the default is Acct.pasp). ProcessAction designates whether the user credentials form should be displayed so that a user can log on, or if the form is being posted back for processing. 2. Retrieve the user credentials from the form. 3. Pass the credentials to the Logon function in Profile.asp.
124 Reference Architecture for Commerce 4. Redirect the user to the Acct.pasp page (or another page determined by the Mode
parameter). The most important code in Login.pasp is a call to the Logon function in Profile.asp:
blnLoginSuccessful = Logon(strUserName, strPassword)
The Logon function is used to validate a user s user name and password and send an authentication ticket in the form of a cookie to the client browser. The Logon function performs the following tasks: 1. Create and initialize an AuthManager object, as follows:
Set objMSCSAuthMgr = _ Server.CreateObject(mc_strAuthManager) Call objMSCSAuthMgr.Initialize _ (Application("MSCSDictConfig").s_SiteName)
2. Remove any existing authentication ticket that the user may have from a previ-
ous session:
If objMSCSAuthMgr.IsAuthenticated Then call objMSCSAuthMgr.SetAuthTicket _ ("", blnCookieSupport, _ Application("MSCSDictConfig")._ i_FormLoginTimeOut) End If
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