DSCResources/cChocoInstaller/cChocoInstaller.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
function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $InstallDir,
        [parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $ChocoInstallScriptUrl = "https://chocolatey.org/install.ps1"

    )
    Write-Verbose " Start Get-TargetResource"


    #Needs to return a hashtable that returns the current
    #status of the configuration component
    $Configuration = @{
        InstallDir = $env:ChocolateyInstall
        ChocoInstallScriptUrl = $ChocoInstallScriptUrl
    }

    if (-not (IsChocoInstalled))
    {
        #$Configuration.Ensure = "Absent"
        Return $Configuration
    }
    else
    {
        #$Configuration.Ensure = "Present"
        Return $Configuration

    }
}

function Set-TargetResource
{
    [CmdletBinding()]    
    param
    (
        [parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $InstallDir,
        [parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $ChocoInstallScriptUrl = "https://chocolatey.org/install.ps1"
    )
    Write-Verbose " Start Set-TargetResource"
    
    if (-not (DoesCommandExist choco) -or -not (IsChocoInstalled))
    {
        #$env:Path = [System.Environment]::GetEnvironmentVariable('Path','Machine')

        Write-Verbose '[ChocoInstaller] Start InstallChoco'
        If(-not (Test-Path -Path $InstallDir)) {
            New-Item -Path $InstallDir -ItemType Directory
        }
        $file = Join-Path $InstallDir "install.ps1"
        [Environment]::SetEnvironmentVariable("ChocolateyInstall", $InstallDir)
        $env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine")        
        
        $env:ChocolateyInstall = $InstallDir
        Download-File $ChocoInstallScriptUrl $file
        . $file
        
        #InstallChoco $InstallDir
        Write-Verbose '[ChocoInstaller] Finish InstallChoco'

        #refresh path varaible in powershell, as choco doesn"t, to pull in git
        
    }
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $InstallDir,
        [parameter(Mandatory = $false)]
        [ValidateNotNullOrEmpty()]
        [System.String]
        $ChocoInstallScriptUrl = "https://chocolatey.org/install.ps1"
    )

    Write-Verbose " Start Test-TargetResource"

    if (-not (IsChocoInstalled))
    {
        Return $false
    }
    ##Test to see if the Install Directory is right.
    if(-not ($InstallDir -eq $env:ChocolateyInstall)) 
    {
        Return $false
    }

    Return $true
}

function IsChocoInstalled
{

    Write-Verbose " Is choco installed? "

    $env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine")

    if (DoesCommandExist choco)
    {
        Write-Verbose " YES - Choco is Installed"

        return $true
    }

    Write-Verbose " NO - Choco isn't Installed"

    return $false

    
}


function ExecPowerShellScript
{
    param(
        [Parameter(Position=1,Mandatory=0)][string]$block
    )

    $location = Get-Location
    Write-Verbose " ExecPowerShellScriptBlock Prep Setting Current Location: $location"

    $psi = New-object System.Diagnostics.ProcessStartInfo 
    $psi.CreateNoWindow = $false 
    $psi.UseShellExecute = $false 
    $psi.RedirectStandardOutput = $true 
    $psi.RedirectStandardError = $true 
    $psi.FileName = "powershell" 
    $psi.WorkingDirectory = $location.ToString()
    $psi.Arguments = "-ExecutionPolicy Unrestricted -command $block" 
    $process = New-Object System.Diagnostics.Process 
    $process.StartInfo = $psi
    $process.Start() | Out-Null
    $process.WaitForExit()
    $output = $process.StandardOutput.ReadToEnd() + $process.StandardError.ReadToEnd()

    Write-Verbose " Exec powershell Command - $block"

    return $output
}

function DoesCommandExist
{
    Param ($command)

    $oldPreference = $ErrorActionPreference
    $ErrorActionPreference = 'stop'

    try 
    {
        if(Get-Command $command)
        {
            return $true
        }
    }
    Catch 
    {
        return $false
    }
    Finally {
        $ErrorActionPreference=$oldPreference
    }
} 


##region - chocolately installer work arounds. Main issue is use of write-host
##attempting to work around the issues with Chocolatey calling Write-host in its scripts.
function global:Write-Host
{
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory = $true, Position = 0)]
        [Object]
        $Object,
        [Switch]
        $NoNewLine,
        [ConsoleColor]
        $ForegroundColor,
        [ConsoleColor]
        $BackgroundColor

    )

    #Override default Write-Host...
    Write-Verbose $Object
}

function Download-File {
param (
  [string]$url,
  [string]$file
 )
  Write-Output "Downloading $url to $file"
  $downloader = new-object System.Net.WebClient

  $defaultCreds = [System.Net.CredentialCache]::DefaultCredentials

  $downloader.DownloadFile($url, $file)
}

Export-ModuleMember -Function *-TargetResource