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48 lines
3 KiB
Markdown
48 lines
3 KiB
Markdown
---
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title: "Download Web Folder Contents with Powershell (`wget -r` replacement)" # Title of the blog post.
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date: 2022-04-19T09:18:04-05:00 # Date of post creation.
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# lastmod: 2022-04-19T09:18:04-05:00 # Date when last modified
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description: "Using PowerShell to retrieve the files stored in a web directory when `wget` isn't an option." # Description used for search engine.
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featured: false # Sets if post is a featured post, making appear on the home page side bar.
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draft: false # Sets whether to render this page. Draft of true will not be rendered.
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toc: true # Controls if a table of contents should be generated for first-level links automatically.
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usePageBundles: true
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# menu: main
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# featureImage: "file.png" # Sets featured image on blog post.
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# featureImageAlt: 'Description of image' # Alternative text for featured image.
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# featureImageCap: 'This is the featured image.' # Caption (optional).
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# thumbnail: "thumbnail.png" # Sets thumbnail image appearing inside card on homepage.
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# shareImage: "share.png" # Designate a separate image for social media sharing.
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codeLineNumbers: false # Override global value for showing of line numbers within code block.
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categories: Code
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tags:
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- powershell
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- windows
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comments: true # Disable comment if false.
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---
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We've been working lately to use [HashiCorp Packer](https://www.packer.io/) to standardize and automate our VM template builds, and we found a need to pull in all of the contents of a specific directory on an internal web server. This would be pretty simple for Linux systems using `wget -r`, but we needed to find another solution for our Windows builds.
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A coworker and I cobbled together a quick PowerShell solution which will download the files within a specified web URL to a designated directory (without recreating the nested folder structure):
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```powershell
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# torchlight! {"lineNumbers": true}
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$outputdir = 'C:\Scripts\Download\'
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$url = 'https://win01.lab.bowdre.net/stuff/files/'
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# enable TLS 1.2 and TLS 1.1 protocols
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[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12, [Net.SecurityProtocolType]::Tls11
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$WebResponse = Invoke-WebRequest -Uri $url
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# get the list of links, skip the first one ("[To Parent Directory]") and download the files
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$WebResponse.Links | Select-Object -ExpandProperty href -Skip 1 | ForEach-Object {
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$fileName = $_.ToString().Split('/')[-1] # 'filename.ext'
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$filePath = Join-Path -Path $outputdir -ChildPath $fileName # 'C:\Scripts\Download\filename.ext'
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$baseUrl = $url.split('/') # ['https', '', 'win01.lab.bowdre.net', 'stuff', 'files']
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$baseUrl = $baseUrl[0,2] -join '//' # 'https://win01.lab.bowdre.net'
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$fileUrl = '{0}{1}' -f $baseUrl.TrimEnd('/'), $_ # 'https://win01.lab.bowdre.net/stuff/files/filename.ext'
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Invoke-WebRequest -Uri $fileUrl -OutFile $filePath
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}
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```
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The latest version of this script will be found on [GitHub](https://github.com/jbowdre/misc-scripts/blob/main/PowerShell/Download-WebFolder.ps1).
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