internal/Update-SqlPermissions.ps1

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Function Update-SqlPermissions
{
 <#
  
.SYNOPSIS
 Internal function. Updates permission sets, roles, database mappings on server and databases
 
 #>

[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[object]$sourceserver,
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[object]$sourcelogin,
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[object]$destserver,
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[object]$destlogin
)

$destination = $destserver.DomainInstanceName
$source = $sourceserver.DomainInstanceName
$username = $sourcelogin.name

# Server Roles: sysadmin, bulklogin, etc
foreach ($role in $sourceserver.roles)
{
$rolename = $role.name
$destrole = $destserver.roles[$rolename]
if ($destrole -ne $null)
{
try { $destrolemembers = $destrole.EnumMemberNames() }
catch { $destrolemembers = $destrole.EnumServerRoleMembers() }
}
try { $rolemembers = $role.EnumMemberNames() }
catch { $rolemembers = $role.EnumServerRoleMembers() }
if ($rolemembers -contains $username)
{
if ($destrole -ne $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Adding $username to $rolename server role"))
{
try
{
$destrole.AddMember($username)
Write-Output "Added $username to $rolename server role."
}
catch
{
Write-Warning "Failed to add $username to $rolename server role."
Write-Exception $_
}
}
}
}

# Remove for Syncs
if ($rolemembers -notcontains $username -and $destrolemembers -contains $username -and $destrole -ne $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Adding $username to $rolename server role"))
{
try
{
$destrole.DropMember($username)
Write-Output "Removed $username from $destrolename server role on $($destserver.name)."
}
catch
{
Write-Warning "Failed to remove $username from $destrolename server role on $($destserver.name)."
Write-Exception $_
}
}
}
}

$ownedjobs = $sourceserver.JobServer.Jobs | Where-Object { $_.OwnerLoginName -eq $username }
foreach ($ownedjob in $ownedjobs)
{
if ($destserver.JobServer.Jobs[$ownedjob.name] -ne $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Changing job owner to $username for $($ownedjob.name)"))
{
try
{
Write-Output "Changing job owner to $username for $($ownedjob.name)"
$destownedjob = $destserver.JobServer.Jobs | Where-Object { $_.name -eq $ownedjobs.name }
$destownedjob.set_OwnerLoginName($username)
$destownedjob.Alter()
}
catch
{
Write-Warning "Could not change job owner for $($ownedjob.name)"
Write-Exception $_
}
}
}
}

if ($sourceserver.versionMajor -ge 9 -and $destserver.versionMajor -ge 9)
{
# These operations are only supported by SQL Server 2005 and above.
# Securables: Connect SQL, View any database, Administer Bulk Operations, etc.

$perms = $sourceserver.EnumServerPermissions($username)
foreach ($perm in $perms)
{
$permstate = $perm.permissionstate
if ($permstate -eq "GrantWithGrant") { $grantwithgrant = $true; $permstate = "grant" }
else { $grantwithgrant = $false }
$permset = New-Object Microsoft.SqlServer.Management.Smo.ServerPermissionSet($perm.permissiontype)
If ($Pscmdlet.ShouldProcess($destination, "Performing $permstate on $($perm.permissiontype) for $username"))
{
try
{
$destserver.PSObject.Methods[$permstate].Invoke($permset, $username, $grantwithgrant)
Write-Output "Successfully performed $permstate $($perm.permissiontype) to $username"
}
catch
{
Write-Warning "Failed to $permstate $($perm.permissiontype) to $username"
Write-Exception $_
}
}

# for Syncs
$destperms = $destserver.EnumServerPermissions($username)
foreach ($perm in $destperms)
{
$permstate = $perm.permissionstate
$sourceperm = $perms | Where-Object { $_.PermissionType -eq $perm.Permissiontype -and $_.PermissionState -eq $permstate }
if ($sourceperm -eq $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Performing Revoke on $($perm.permissiontype) for $username"))
{
try
{
$permset = New-Object Microsoft.SqlServer.Management.Smo.ServerPermissionSet($perm.permissiontype)
if ($permstate -eq "GrantWithGrant") { $grantwithgrant = $true; $permstate = "grant" }
else { $grantwithgrant = $false }
$destserver.PSObject.Methods["Revoke"].Invoke($permset, $username, $false, $grantwithgrant)
Write-Output "Successfully revoked $($perm.permissiontype) from $username"
}
catch
{
Write-Warning "Failed to revoke $($perm.permissiontype) from $username"
Write-Exception $_
}
}
}
}
}

# Credential mapping. Credential removal not currently supported for Syncs.
$logincredentials = $sourceserver.credentials | Where-Object { $_.Identity -eq $sourcelogin.name }
foreach ($credential in $logincredentials)
{
if ($destserver.Credentials[$credential.name] -eq $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Adding $($credential.name) to $username"))
{
try
{
$newcred = New-Object Microsoft.SqlServer.Management.Smo.Credential($destserver, $credential.name)
$newcred.identity = $sourcelogin.name
$newcred.Create()
Write-Output "Successfully created credential for $username"
}
catch
{
Write-Warning "Failed to create credential for $username"
Write-Exception $_
}
}
}
}
}

if ($destserver.versionMajor -lt 9) { Write-Warning "Database mappings skipped when destination is SQL Server 2000"; continue }

# For Sync, if info doesn't exist in EnumDatabaseMappings, then no big deal.
foreach ($db in $destlogin.EnumDatabaseMappings())
{
$dbname = $db.dbname
$destdb = $destserver.databases[$dbname]
$sourcedb = $sourceserver.databases[$dbname]
$dbusername = $db.username; $dblogin = $db.loginName

if ($sourcedb -ne $null)
{
if ($sourcedb.users[$dbusername] -eq $null -and $destdb.users[$dbusername] -ne $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Dropping $dbusername from $dbname on destination."))
{
try
{
$destdb.users[$dbusername].Drop()
Write-Output "Dropped user $dbusername (login: $dblogin) from $dbname on destination. User may own a schema."
}
catch
{
Write-Warning "Failed to drop $dbusername ($dblogin) from $dbname on destination."
Write-Exception $_
}
}
}

# Remove user from role. Role removal not currently supported for Syncs.
# TODO: reassign if dbo, application roles
foreach ($destrole in $destdb.roles)
{
$destrolename = $destrole.name
$sourcerole = $sourcedb.roles[$destrolename]
if ($sourcerole -ne $null)
{
if ($sourcerole.EnumMembers() -notcontains $dbusername -and $destrole.EnumMembers() -contains $dbusername)
{
if ($dbusername -ne "dbo")
{
If ($Pscmdlet.ShouldProcess($destination, "Dropping $username from $destrolename database role on $dbname"))
{
try
{
$destrole.DropMember($dbusername)
$destdb.Alter()
Write-Output "Dropped username $dbusername (login: $dblogin) from $destrolename on $destination"
}
catch
{
Write-Warning "Failed to remove $dbusername from $destrolename database role on $dbname."
Write-Exception $_
}
}
}
}
}
}

# Remove Connect, Alter Any Assembly, etc
$destperms = $destdb.EnumDatabasePermissions($username)
$perms = $sourcedb.EnumDatabasePermissions($username)
# for Syncs
foreach ($perm in $destperms)
{
$permstate = $perm.permissionstate
$sourceperm = $perms | Where-Object { $_.PermissionType -eq $perm.Permissiontype -and $_.PermissionState -eq $permstate }
if ($sourceperm -eq $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Performing Revoke on $($perm.permissiontype) for $username on $dbname on $destination"))
{
try
{
$permset = New-Object Microsoft.SqlServer.Management.Smo.DatabasePermissionSet($perm.permissiontype)
if ($permstate -eq "GrantWithGrant") { $grantwithgrant = $true; $permstate = "grant" }
else { $grantwithgrant = $false }
$destdb.PSObject.Methods["Revoke"].Invoke($permset, $username, $false, $grantwithgrant)
Write-Output "Successfully revoked $($perm.permissiontype) from $username on $dbname on $destination"
}
catch
{
Write-Warning "Failed to revoke $($perm.permissiontype) from $username on $dbname on $destination"
Write-Exception $_
}
}
}
}
}
}

# Adding database mappings and securables
foreach ($db in $sourcelogin.EnumDatabaseMappings())
{
$dbname = $db.dbname
$destdb = $destserver.databases[$dbname]
$sourcedb = $sourceserver.databases[$dbname]
$dbusername = $db.username; $dblogin = $db.loginName

if ($destdb -ne $null)
{
if (!$destdb.IsAccessible)
{
Write-Output "Database [$($destdb.Name)] is not accessible. Skipping"
Continue
}
if ($destdb.users[$dbusername] -eq $null)
{
If ($Pscmdlet.ShouldProcess($destination, "Adding $dbusername to $dbname"))
{
$sql = $sourceserver.databases[$dbname].users[$dbusername].script() | Out-String
$sql = $sql -replace [Regex]::Escape("'$source'"), [Regex]::Escape("'$destination'")
try
{
$destdb.ExecuteNonQuery($sql)
Write-Output "Added user $dbusername (login: $dblogin) to $dbname"
}
catch
{
Write-Warning "Failed to add $dbusername ($dblogin) to $dbname on $destination."
Write-Exception $_
}
}
}

# Db owner
If ($sourcedb.owner -eq $username)
{
If ($Pscmdlet.ShouldProcess($destination, "Changing $dbname dbowner to $username"))
{
try
{
$result = Update-SqlDbOwner $sourceserver $destserver -dbname $dbname
if ($result -eq $true)
{
Write-Output "Changed $($destdb.name) owner to $($sourcedb.owner)."
}
else { Write-Warning "Failed to update $($destdb.name) owner to $($sourcedb.owner)." }
}
catch { Write-Warning "Failed to update $($destdb.name) owner to $($sourcedb.owner)." }
}
}

# Database Roles: db_owner, db_datareader, etc
foreach ($role in $sourcedb.roles)
{
if ($role.EnumMembers() -contains $username)
{
$rolename = $role.name
$destdbrole = $destdb.roles[$rolename]

if ($destdbrole -ne $null -and $dbusername -ne "dbo" -and $destdbrole.EnumMembers() -notcontains $username)
{
If ($Pscmdlet.ShouldProcess($destination, "Adding $username to $rolename database role on $dbname"))
{
try
{
$destdbrole.AddMember($username)
$destdb.Alter()
Write-Output "Added $username to $rolename database role on $dbname."

}
catch
{
Write-Warning "Failed to add $username to $rolename database role on $dbname."
Write-Exception $_
}
}
}
}
}

# Connect, Alter Any Assembly, etc
$perms = $sourcedb.EnumDatabasePermissions($username)
foreach ($perm in $perms)
{
$permstate = $perm.permissionstate
if ($permstate -eq "GrantWithGrant") { $grantwithgrant = $true; $permstate = "grant" }
else { $grantwithgrant = $false }
$permset = New-Object Microsoft.SqlServer.Management.Smo.DatabasePermissionSet($perm.permissiontype)
If ($Pscmdlet.ShouldProcess($destination, "Performing $permstate on $($perm.permissiontype) for $username on $dbname"))
{
try
{
$destdb.PSObject.Methods[$permstate].Invoke($permset, $username, $grantwithgrant)
Write-Output "Successfully performed $permstate $($perm.permissiontype) to $username on $dbname"
}
catch
{
Write-Warning "Failed to perform $permstate on $($perm.permissiontype) for $username on $dbname."
Write-Exception $_
}
}
}
}
}
}