Empire/data/module_source/collection/Get-SQLQuery.ps1

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Function Get-ComputerNameFromInstance {
[CmdletBinding()]
Param(
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server instance.')]
[string]$Instance
)
If ($Instance){$ComputerName = $Instance.split('\')[0].split(',')[0]}
else{$ComputerName = $env:COMPUTERNAME}
Return $ComputerName
}
Function Get-SQLConnectionObject {
[CmdletBinding()]
Param(
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server or domain account to authenticate with.')]
[string]$Username,
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server or domain account password to authenticate with.')]
[string]$Password,
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server instance to connection to.')]
[string]$Instance,
[Parameter(Mandatory = $false,
HelpMessage = 'Dedicated Administrator Connection (DAC).')]
[Switch]$DAC,
[Parameter(Mandatory = $false,
HelpMessage = 'Default database to connect to.')]
[String]$Database,
[Parameter(Mandatory = $false,
HelpMessage = 'Connection timeout.')]
[string]$TimeOut = 1
)
Begin {
if($DAC){$DacConn = 'ADMIN:'}else{$DacConn = ''}
if(-not $Database){$Database = 'Master'}
} Process {
if (-not $Instance) {
$Instance = $env:COMPUTERNAME
}
$Connection = New-Object -TypeName System.Data.SqlClient.SqlConnection
if(-not $Username) {
$AuthenticationType = "Current Windows Credentials"
$Connection.ConnectionString = "Server=$DacConn$Instance;Database=$Database;Integrated Security=SSPI;Connection Timeout=1"
}
if ($username -like "*\*") {
$AuthenticationType = "Provided Windows Credentials"
$Connection.ConnectionString = "Server=$DacConn$Instance;Database=$Database;Integrated Security=SSPI;uid=$Username;pwd=$Password;Connection Timeout=$TimeOut"
}
if (($username) -and ($username -notlike "*\*")) {
$AuthenticationType = "Provided SQL Login"
$Connection.ConnectionString = "Server=$DacConn$Instance;Database=$Database;User ID=$Username;Password=$Password;Connection Timeout=$TimeOut"
}
return $Connection
} End {
}
}
Function Get-SQLQuery {
[CmdletBinding()]
Param(
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server or domain account to authenticate with.')]
[string]$Username,
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server or domain account password to authenticate with.')]
[string]$Password,
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server instance to connection to.')]
[string]$Instance,
[Parameter(Mandatory = $false,
HelpMessage = 'SQL Server query.')]
[string]$Query,
[Parameter(Mandatory = $false,
HelpMessage = 'Connect using Dedicated Admin Connection.')]
[Switch]$DAC,
[Parameter(Mandatory = $false,
HelpMessage = 'Default database to connect to.')]
[String]$Database,
[Parameter(Mandatory = $false,
HelpMessage = 'Connection timeout.')]
[int]$TimeOut,
[Parameter(Mandatory = $false,
HelpMessage = 'Return error message if exists.')]
[switch]$ReturnError
)
Begin {
$TblQueryResults = New-Object -TypeName System.Data.DataTable
} Process {
if($DAC){$Connection = Get-SQLConnectionObject -Instance $Instance -Username $Username -Password $Password -TimeOut $TimeOut -DAC -Database $Database}
else{$Connection = Get-SQLConnectionObject -Instance $Instance -Username $Username -Password $Password -TimeOut $TimeOut -Database $Database}
$ConnectionString = $Connection.Connectionstring
$Instance = $ConnectionString.split(';')[0].split('=')[1]
if($Query) {
$Connection.Open()
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"$Instance : Connection Success."
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$Command = New-Object -TypeName System.Data.SqlClient.SqlCommand -ArgumentList ($Query, $Connection)
try {
$Results = $Command.ExecuteReader()
$TblQueryResults.Load($Results)
} catch {
# pass
}
$Connection.Close()
$Connection.Dispose()
}
else{'No query provided to Get-SQLQuery function.';Break}
} End {
if($ReturnError){$ErrorMessage}
else{$TblQueryResults.Column1}
}
}