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Tip of the Day
Language: VB7
Expertise: beginner
Aug 11, 2003



Application Security Testing: An Integral Part of DevOps

Discovering if the input connection string is for the SQL Server managed provider

' Return a boolean indicating whether the input connection string is for the
' ADO.NET's SQL Server managed provider
' Note: the function assumes the input string is a valid OLEDB or SQL Server
' connection string, and it just verifies it does not contain the "Provider" 
' value
' Examples:
'   Debug.WriteLine(IsSqlProviderConnString
' ("server=(local);database=MyDB;uid=sa;pwd=;"))   ' => True
'   Debug.WriteLine(IsSqlProviderConnString("Provider=SQLOLEDB.1;Data 
' Source=.;User ID=sa;Password=;Initial Catalog=MyDB")) ' => False

Function IsSqlProviderConnString(ByVal connString As String) As Boolean
    connString = connString.ToLower()
    Dim hasProviderValue As Boolean = (connString.IndexOf("provider") > -1)
    Dim hasDbValue As Boolean = (connString.IndexOf("database") > -1) OrElse _
        (connString.IndexOf("initial catalog") > -1)
    Return hasDbValue And (Not hasProviderValue)
End Function
Marco Bellinaso
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