CPolydorou.IIS.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
489
490
#region Functions
#region Get-WebConnections
function Get-WebConnections
{
    Param
    (
        [Parameter(Mandatory = $false, ValueFromPipeline = $false, ValueFromPipelineByPropertyName = $false, Position = 0)]
        [string]$WebSite,

        [Parameter(Mandatory = $false, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, Position = 1)]
        [string[]]$ComputerName = $env:COMPUTERNAME
    )

    Begin{}

    Process
    {

        foreach($c in $ComputerName)
        {
            $results = @()
            $perfmon = new-object System.Diagnostics.PerformanceCounter
            $perfmon.CategoryName = "Web Service"
            $perfmon.CounterName = "Current Connections"
            $perfmon.MachineName = $c

            $cat = new-object System.Diagnostics.PerformanceCounterCategory("Web Service")
            $instances = $cat.GetInstanceNames()

            foreach ($instance in $instances)
            {
                if(-not ([String]::IsNullOrEmpty($WebSite)))
                {
                    if($WebSite -ne $instance)
                    {
                        continue
                    }
                }

                $perfmon.InstanceName = $instance
                $obj = New-Object psobject
                $obj | Add-Member -MemberType NoteProperty -Name ComputerName -Value $c
                $obj | Add-Member -MemberType NoteProperty -Name WebSite -Value $instance
                
                $connections  = -1
                try
                {
                    $connections = $perfmon.NextValue()
                }
                catch
                {
                }

                $obj | Add-Member -MemberType NoteProperty -Name Connections -Value $connections
                $results += $obj
            }

            write-output $results
        }
    }
        
    End{}
}
#endregion
#region Restart-IISApplicationPool
Function Restart-IISApplicationPool
{
    [cmdletBinding()]

    Param
    (
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [Alias("Name")]
        [string[]]$ComputerName = $env:COMPUTERNAME,

        [Parameter(Mandatory = $true, Position = 1)]
        [string[]]$AppPool
    )

    Begin {}

    Process
    {
        foreach($s in $ComputerName)
        {
            Write-Verbose ("Processing server: " + $s)
            Invoke-Command -ComputerName $s `
                           -ScriptBlock {
                                [cmdletBinding()]
                                
                                Param
                                (
                                    [string[]]$ApplicationPoolNames
                                )

                                # Import the web administration module
                                Import-Module WebAdministration

                                # Restart the application pool
                                $VerbosePreference = $using:VerbosePreference
                                foreach($ap in $ApplicationPoolNames)
                                {
                                    Write-Verbose ("`tRestarting application pool: " + $ap)
                                    Restart-WebAppPool -Name $ap
                                }
                            } -ArgumentList (,$AppPool) -Verbose
        }
    }

    End {}
}
#endregion
#region Get-IISApplicationPool
function Get-IISApplicationPool
{
    [cmdletBinding()]

    Param
    (
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [Alias("Name")]
        [string[]]$ComputerName = $env:COMPUTERNAME,

        [Parameter(Mandatory = $false, Position = 1)]
        [string[]]$AppPool
    )

    Begin {}

    Process
    {
        foreach($s in $ComputerName)
        {
            Write-Verbose ("Processing server: " + $s)
            $pools = Invoke-Command -ComputerName $s `
                           -ScriptBlock {
                                [cmdletBinding()]
                                
                                Param
                                (
                                    [string[]]$ApplicationPoolNames
                                )

                                # Import the web administration module
                                Import-Module WebAdministration

                                # Restart the application pool
                                $VerbosePreference = $using:VerbosePreference
                                Get-ChildItem -Path IIS:\AppPools
                            } -Verbose |
                Select-Object -Property @{Name="Name"; Expression={$_.Name}}, `
                                        @{Name="State"; Expression={$_.State}}, `
                                        @{Name="ComputerName"; Expression = {$_.PSComputerName}}, `
                                        @{Name="WorkerProcesses"; Expression={$_.WorkerProcesses.Collection.ProcessID -join ","}}
            if($AppPool)
            {
                foreach($ap in $AppPool)
                {
                    $pools |
                        Where-Object {$_.Name -like $ap}
                }
            }
            else
            {
                $pools
            }
        }
    }

    End {}
}
#endregion
#region Get-IISApplicationPoolWorkerProcesses
function Get-IISApplicationPoolWorkerProcesses
{
    [cmdletBinding()]

    Param
    (
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [Alias("Name")]
        [string[]]$ComputerName = $env:COMPUTERNAME,

        [Parameter(Mandatory = $false, Position = 1)]
        [string[]]$AppPool
    )

    Begin {}

    Process
    {
        foreach($s in $ComputerName)
        {
            Write-Verbose ("Processing server: " + $s)
            $workerProcesses = Invoke-Command -ComputerName $s `
                           -ScriptBlock {
                                [cmdletBinding()]
                                
                                Param
                                (
                                    [string[]]$ApplicationPoolNames
                                )

                                # Import the web administration module
                                Import-Module WebAdministration

                                # Restart the application pool
                                $VerbosePreference = $using:VerbosePreference
                                Get-ChildItem -Path IIS:\AppPools |
                                    %{
                                        $appPool = $_.Name
                                        Get-ChildItem -Path ("IIS:\AppPools\" + $_.Name + "\WorkerProcesses") |
                                            Select-Object -Property @{Name="AppPool"; Expression={$appPool}},ProcessID,State,Handles,StartTime
                                    }
                            } -Verbose |
                Select-Object -Property @{Name="AppPool"; Expression={$_.AppPool}}, `
                                        @{Name="ComputerName"; Expression = {$_.PSComputerName}}, `
                                        @{Name="ProcessID"; Expression={$_.processid}}, `
                                        @{Name="State"; Expression={$_.state}}, `
                                        @{Name="Handles"; Expression={$_.handles}}, `
                                        @{Name="StartTime"; Expression={$_.starttime}}
            if($AppPool)
            {
                foreach($ap in $AppPool)
                {
                    $workerProcesses |
                        Where-Object {$_.AppPool -like $ap}
                }
            }
            else
            {
                $workerProcesses
            }
        }
    }

    End {}
}
#endregion
#region Search-IISSiteLog
workflow Search-IISSiteLog
{
    <#
    .Synopsis
       Parse log files.
    .DESCRIPTION
       Parse log files in folder or using the web site name.
    .EXAMPLE
        Search the log files for site "Default Web Site" of local server for pattern "401"
 
        Search-IISSiteLog -WebSite "Default Web Site" -Pattern "401"
    .EXAMPLE
        Search the files under the "c:\inetpub\logs\LogFiles\W3SVC1" of the local server for lines that match the pattern "404"
 
        Search-IISSiteLog -Path "c:\inetpub\logs\LogFiles\W3SVC1" -Pattern "404"
    .EXAMPLE
        Search the files in directory "c:\inetpub\logs\LogFiles\W3SVC1" that are last changed between 12/31/2017 and 7/1/2018 on webservers "webserver1" and "webserver2" for the regex pattern "40"
        
        Search-IISSiteLog -ComputerName webserver1,webserver2 -Path "c:\inetpub\logs\LogFiles\W3SVC1" -Pattern "40" -End "12/31/2017" -Start "7/1/2017"
    .NOTES
       This workflow requires remote PowerShell access to the servers and in case the website name is used, the WebAdministration module has to be available on the servers.
    .FUNCTIONALITY
       Log file parser.
    #>


    #region Parameters
    [CmdletBinding(DefaultParameterSetName='Parameter Set Website',
                  ConfirmImpact='Low')]

    Param
    (
        # The web server
        [Parameter(Mandatory=$false, 
                   Position=0,
                   ParameterSetName='Parameter Set Website')]
        [Parameter(Mandatory=$false, 
                   Position=0,
                   ParameterSetName='Parameter Set Folder')]
        [Alias("Server")]
        [string[]] 
        $ComputerName,

        # The web site
        [Parameter(Mandatory=$false, 
                   Position=1,
                   ParameterSetName='Parameter Set Website')]
        [string[]] 
        $WebSite,

        # The folder
        [Parameter(Mandatory=$false, 
                   Position=1,
                   ParameterSetName='Parameter Set Folder')]
        [string] 
        $Path,

        # The expression to match against
        [Parameter(Mandatory=$false, 
                   Position=2,
                   ParameterSetName='Parameter Set Website')]
        [Parameter(Mandatory=$false, 
                   Position=2,
                   ParameterSetName='Parameter Set Folder')]
        [string] 
        $Pattern,

        # The start time
        [Parameter(Mandatory=$false, 
                   Position=3,
                   ParameterSetName='Parameter Set Website')]
        [Parameter(Mandatory=$false, 
                   Position=3,
                   ParameterSetName='Parameter Set Folder')]
        [DateTime] 
        $Start,

        # The end time
        [Parameter(Mandatory=$false, 
                   Position=4,
                   ParameterSetName='Parameter Set Website')]
        [Parameter(Mandatory=$false, 
                   Position=4,
                   ParameterSetName='Parameter Set Folder')]
        [DateTime] 
        $End
    )
    #endregion

    #region configuration
    # Set the default value for the computername
    if(-not $ComputerName)
    {
        $ComputerName = $env:COMPUTERNAME
    }
    #endregion

    #region Permission Level

    # Check if the workflow was executed under administrator level permissions
    if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(`
        [Security.Principal.WindowsBuiltInRole] "Administrator"))
    {
        Write-Error "This cmdlet has to be executed with administrator rights."
        return
    }
    #endregion

    #region Set the mode of operation
    if($Path)
    {
        $mode = "Path"
        $location = $Path
    }
    else
    {
        $mode = "Site"
        $location = $WebSite
    }
    #endregion

    #region Create the configuration

    # A hashtable is created in order to be passed as a variable to the scriptblock
    $configuration = @{
                        Mode     = $mode 
                        Location = $location
                        Match    = $Pattern
                        Start    = $Start
                        End      = $End
                     }
    #endregion

    #region Process servers
    foreach -parallel ($c in $ComputerName)
    {
        Write-Verbose "Processing logs on server $c"
        inlineScript
        {
            Invoke-Command -ComputerName $using:c `
                           -ScriptBlock {

                                # The scriptblock paramters
                                Param($config)

                                # Create a variable to hold the files to be processed
                                $files = New-Object -TypeName System.Collections.ArrayList

                                #region Get the files to process
                                # Deferentiate uppon mode
                                if($config.Mode -eq "Path")
                                {
                                    # Get the files in the directory and add them to the collection
                                    Get-ChildItem -Path $config.Location -Force -File |
                                        %{
                                            $files.Add($_) |
                                                Out-Null
                                        }
                                }

                                if($config.Mode -eq "Site")
                                {
                                    # Load the IIS module
                                    Import-Module webadministration

                                    # Get the website
                                    Write-Warning "afsdf"
                                    $site = Get-Website |
                                                Where-Object {$_.Name -eq $config.Location}

                                    # Get the path to the log files
                                    if($site)
                                    {
                                        # Get the path
                                        $logPath = [System.Environment]::ExpandEnvironmentVariables($site.logFile.directory) + "\w3svc" + $site.id

                                        # Get the files
                                        Get-ChildItem -Path $logPath -Force -File |
                                            %{
                                                $files.Add($_) |
                                                    Out-Null
                                            }
                                    }
                                    else
                                    {
                                        continue
                                    }
                                }
                                #endregion

                                # Create the RegEx object
                                $regex = New-Object -TypeName system.text.regularexpressions.regex $config.Match

                                #region Process the files
                                foreach($f in $files)
                                {
                                    
                                    # Exclude files older than start time
                                    if($config.Start -ne [DateTime]::MinValue)
                                    {
                                        if($f.LastWriteTime -le $config.Start)
                                        {
                                            continue
                                        }
                                    }
                                    
                                    # Exclude files newer than end date
                                    if($config.End -ne [DateTime]::MinValue)
                                    {
                                        if($f.LastWriteTime -ge [DateTime]$config.End)
                                        {
                                            continue
                                        }
                                    }
                                    
                                    # Get the content of each file
                                    $content = Get-Content -Path $f.Fullname

                                    foreach($line in $content)
                                    {
                                        #region Pattern

                                        # Check if pattern is specified
                                        if($Config.Match -ne $null)
                                        {
                                            # Move to the next line if not matched
                                            if( -not $regex.IsMatch($line))
                                            {
                                                continue
                                            }
                                        }
                                        #endregion

                                        # Create the custom object
                                        $props = [ordered]@{
                                                            ComputerName = $env:COMPUTERNAME
                                                            File = $f
                                                            Entry = $line
                                                         }
                                        New-Object -TypeName PSObject -Property $props
                                    }
                                }
                                #endregion
                            } `
                        -ArgumentList $using:configuration
        }     
    }
    #endregion
}
#endregion
#endregion