DSCResources/MSFT_xCertificateExport/MSFT_xCertificateExport.psm1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
#Requires -Version 4.0

$modulePath = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'Modules'

# Import the Certificate Common Modules
Import-Module -Name (Join-Path -Path $modulePath `
        -ChildPath (Join-Path -Path 'CertificateDsc.Common' `
            -ChildPath 'CertificateDsc.Common.psm1'))

# Import the Certificate Resource Helper Module
Import-Module -Name (Join-Path -Path $modulePath `
        -ChildPath (Join-Path -Path 'CertificateDsc.ResourceHelper' `
            -ChildPath 'CertificateDsc.ResourceHelper.psm1'))

# Import Localization Strings
$localizedData = Get-LocalizedData `
    -ResourceName 'MSFT_xCertificateExport' `
    -ResourcePath (Split-Path -Parent $Script:MyInvocation.MyCommand.Path)

<#
    .SYNOPSIS
    Returns the current state of the exported certificate.
 
    .PARAMETER Path
    The path to the file you that will contain the exported certificate.
#>

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([Hashtable])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Path
    )

    Write-Verbose -Message (
        @(
            "$($MyInvocation.MyCommand): ",
            $($LocalizedData.GettingCertificateExportMessage -f $Path)
        ) -join '' )

    $result = @{
        Path       = $Path
        IsExported = (Test-Path -Path $Path)
    }

    return $result
} # end function Get-TargetResource

<#
    .SYNOPSIS
    Exports the certificate.
 
    .PARAMETER Path
    The path to the file you that will contain the exported certificate.
 
    .PARAMETER Thumbprint
    The thumbprint of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER FriendlyName
    The friendly name of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER Subject
    The subject of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER DNSName
    The subject alternative name of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER Issuer
    The issuer of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER KeyUsage
    The key usage of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER EnhancedKeyUsage
    The enhanced key usage of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER Store
    The Windows Certificate Store Name to search for the certificate to export from.
    Certificate selector parameter.
    Defaults to 'My'.
 
    .PARAMETER AllowExpired
    Allow an expired certificate to be exported.
    Certificate selector parameter.
 
    .PARAMETER MatchSource
    Causes an existing exported certificate to be compared with the certificate identified for
    export and re-exported if it does not match.
 
    .PARAMETER Type
    Specifies the type of certificate to export.
    Defaults to 'Cert'.
 
    .PARAMETER ChainOption
    Specifies the options for building a chain when exporting a PFX certificate.
    Defaults to 'BuildChain'.
 
    .PARAMETER Password
    Specifies the password used to protect an exported PFX file.
 
    .PARAMETER ProtectTo
    Specifies an array of strings for the username or group name that can access the private
    key of an exported PFX file without any password.
#>

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Path,

        [Parameter()]
        [System.String]
        $Thumbprint,

        [Parameter()]
        [System.String]
        $FriendlyName,

        [Parameter()]
        [System.String]
        $Subject,

        [Parameter()]
        [System.String[]]
        $DNSName,

        [Parameter()]
        [System.String]
        $Issuer,

        [Parameter()]
        [System.String[]]
        $KeyUsage,

        [Parameter()]
        [System.String[]]
        $EnhancedKeyUsage,

        [Parameter()]
        [System.String]
        $Store = 'My',

        [Parameter()]
        [System.Boolean]
        $AllowExpired,

        [Parameter()]
        [System.Boolean]
        $MatchSource,

        [Parameter()]
        [ValidateSet("Cert", "P7B", "SST", "PFX")]
        [System.String]
        $Type = 'Cert',

        [Parameter()]
        [ValidateSet("BuildChain", "EndEntityCertOnly")]
        [System.String]
        $ChainOption = 'BuildChain',

        [Parameter()]
        [System.Management.Automation.PSCredential]
        [System.Management.Automation.Credential()]
        $Password,

        [Parameter()]
        [System.String[]]
        $ProtectTo
    )

    Write-Verbose -Message (
        @(
            "$($MyInvocation.MyCommand): ",
            $($LocalizedData.SettingCertificateExportMessage -f $Path)
        ) -join '' )

    $findCertificateParameters = @{} + $PSBoundParameters
    $null = $findCertificateParameters.Remove('Path')
    $null = $findCertificateParameters.Remove('MatchSource')
    $null = $findCertificateParameters.Remove('Type')
    $null = $findCertificateParameters.Remove('ChainOption')
    $null = $findCertificateParameters.Remove('Password')
    $null = $findCertificateParameters.Remove('ProtectTo')
    $foundCertificates = @(Find-Certificate @findCertificateParameters)

    if ($foundCertificates.Count -eq 0)
    {
        # A certificate matching the specified certificate selector parameters could not be found
        Write-Verbose -Message (
            @(
                "$($MyInvocation.MyCommand): ",
                $($LocalizedData.CertificateToExportNotFound -f $Path, $Type, $Store)
            ) -join '' )
    }
    else
    {
        $certificateToExport = $foundCertificates[0]
        $certificateThumbprintToExport = $certificateToExport.Thumbprint

        Write-Verbose -Message (
            @(
                "$($MyInvocation.MyCommand): ",
                $($LocalizedData.CertificateToExportFound -f $certificateThumbprintToExport, $Path)
            ) -join '' )

        # Export the certificate
        $exportCertificateParameters = @{
            FilePath = $Path
            Cert     = $certificateToExport
            Force    = $true
        }

        if ($Type -in @('Cert', 'P7B', 'SST'))
        {
            $exportCertificateParameters += @{
                Type = $Type
            }
            Export-Certificate @exportCertificateParameters
        }
        elseif ($Type -eq 'PFX')
        {
            $exportCertificateParameters += @{
                Password    = $Password.Password
                ChainOption = $ChainOption
            }

            if ($PSBoundParameters.ContainsKey('ProtectTo'))
            {
                $exportCertificateParameters += @{
                    ProtectTo = $ProtectTo
                }
            } # if
            Export-PfxCertificate @exportCertificateParameters
        } # if

        Write-Verbose -Message (
            @(
                "$($MyInvocation.MyCommand): ",
                $($LocalizedData.CertificateExported -f $certificateThumbprintToExport, $Path, $Type)
            ) -join '' )
    } # if
} # end function Set-TargetResource

<#
    .SYNOPSIS
    Tests the state of the currently exported certificate.
 
    .PARAMETER Path
    The path to the file you that will contain the exported certificate.
 
    .PARAMETER Thumbprint
    The thumbprint of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER FriendlyName
    The friendly name of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER Subject
    The subject of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER DNSName
    The subject alternative name of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER Issuer
    The issuer of the certificate to export.
    Certificate selector parameter.
 
    .PARAMETER KeyUsage
    The key usage of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER EnhancedKeyUsage
    The enhanced key usage of the certificate to export must contain these values.
    Certificate selector parameter.
 
    .PARAMETER Store
    The Windows Certificate Store Name to search for the certificate to export from.
    Certificate selector parameter.
    Defaults to 'My'.
 
    .PARAMETER AllowExpired
    Allow an expired certificate to be exported.
    Certificate selector parameter.
 
    .PARAMETER MatchSource
    Causes an existing exported certificate to be compared with the certificate identified for
    export and re-exported if it does not match.
 
    .PARAMETER Type
    Specifies the type of certificate to export.
    Defaults to 'Cert'.
 
    .PARAMETER ChainOption
    Specifies the options for building a chain when exporting a PFX certificate.
    Defaults to 'BuildChain'.
 
    .PARAMETER Password
    Specifies the password used to protect an exported PFX file.
 
    .PARAMETER ProtectTo
    Specifies an array of strings for the username or group name that can access the private
    key of an exported PFX file without any password.
#>

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Path,

        [Parameter()]
        [System.String]
        $Thumbprint,

        [Parameter()]
        [System.String]
        $FriendlyName,

        [Parameter()]
        [System.String]
        $Subject,

        [Parameter()]
        [System.String]
        $Issuer,

        [Parameter()]
        [System.String[]]
        $DNSName,

        [Parameter()]
        [System.String[]]
        $KeyUsage,

        [Parameter()]
        [System.String[]]
        $EnhancedKeyUsage,

        [Parameter()]
        [System.String]
        $Store = 'My',

        [Parameter()]
        [System.Boolean]
        $AllowExpired,

        [Parameter()]
        [System.Boolean]
        $MatchSource,

        [Parameter()]
        [ValidateSet("Cert", "P7B", "SST", "PFX")]
        [System.String]
        $Type = 'Cert',

        [Parameter()]
        [ValidateSet("BuildChain", "EndEntityCertOnly")]
        [System.String]
        $ChainOption = 'BuildChain',

        [Parameter()]
        [System.Management.Automation.PSCredential]
        [System.Management.Automation.Credential()]
        $Password,

        [Parameter()]
        [System.String[]]
        $ProtectTo
    )

    Write-Verbose -Message (
        @(
            "$($MyInvocation.MyCommand): ",
            $($LocalizedData.TestingCertificateExportMessage -f $Path)
        ) -join '' )

    $findCertificateParameters = @{} + $PSBoundParameters
    $null = $findCertificateParameters.Remove('Path')
    $null = $findCertificateParameters.Remove('MatchSource')
    $null = $findCertificateParameters.Remove('Type')
    $null = $findCertificateParameters.Remove('ChainOption')
    $null = $findCertificateParameters.Remove('Password')
    $null = $findCertificateParameters.Remove('ProtectTo')
    $foundCertificates = @(Find-Certificate @findCertificateParameters)

    if ($foundCertificates.Count -eq 0)
    {
        # A certificate matching the specified certificate selector parameters could not be found
        Write-Verbose -Message (
            @(
                "$($MyInvocation.MyCommand): ",
                $($LocalizedData.CertificateToExportNotFound -f $Path, $Type, $Store)
            ) -join '' )

        return $true
    }
    else
    {
        $certificateToExport = $foundCertificates[0]
        $certificateThumbprintToExport = $certificateToExport.Thumbprint

        Write-Verbose -Message (
            @(
                "$($MyInvocation.MyCommand): ",
                $($LocalizedData.CertificateToExportFound -f $certificateThumbprintToExport, $Path)
            ) -join '' )

        if (Test-Path -Path $Path)
        {
            if ($MatchSource)
            {
                # The certificate has already been exported, but we need to make sure it matches
                Write-Verbose -Message (
                    @(
                        "$($MyInvocation.MyCommand): ",
                        $($LocalizedData.CertificateAlreadyExportedMatchSource -f $certificateThumbprintToExport, $Path)
                    ) -join '' )

                # Need to now compare the existing exported cert content with the found cert
                $exportedCertificate = New-Object -TypeName 'System.Security.Cryptography.X509Certificates.X509Certificate2Collection'
                if ($Type -in @('Cert', 'P7B', 'SST'))
                {
                    $exportedCertificate.Import($Path)
                }
                elseif ($Type -eq 'PFX')
                {
                    $exportedCertificate.Import($Path, $Password, [System.Security.Cryptography.X509Certificates.X509KeyStorageFlags]::PersistKeySet)
                } # if

                if ($certificateThumbprintToExport -notin $exportedCertificate.Thumbprint)
                {
                    Write-Verbose -Message (
                        @(
                            "$($MyInvocation.MyCommand): ",
                            $($LocalizedData.CertificateAlreadyExportedNotMatchSource -f $certificateThumbprintToExport, $Path)
                        ) -join '' )

                    return $false
                } # if
            }
            else
            {
                # This certificate is already exported and we don't want to check it is
                # the right certificate.
                Write-Verbose -Message (
                    @(
                        "$($MyInvocation.MyCommand): ",
                        $($LocalizedData.CertificateAlreadyExported -f $certificateThumbprintToExport, $Path)
                    ) -join '' )
            } # if

            return $true
        }
        else
        {
            # The found certificate has not been exported yet
            Write-Verbose -Message (
                @(
                    "$($MyInvocation.MyCommand): ",
                    $($LocalizedData.CertificateNotExported -f $certificateThumbprintToExport, $Path)
                ) -join '' )

            return $false
        } # if
    } # if
}  # end function Test-TargetResource

Export-ModuleMember -Function *-TargetResource