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REQUIREMENTS.md

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invoke-uri Requirements

General

  • iwr-req-100: The invoke-uri GitHub Action shall run within the GitHub Actions continuous integration ecosystem as a public composite action.

  • iwr-req-101: The action shall strictly use the built-in shell features of GitHub Actions and shall not use a third-party runtime such as node.js or python. This is so that the dependency management and maintenance of the action can be kept at a minimum.

  • iwr-req-102: The action shall support GitHub native runners with the following operating systems regardless of their language configuration: windows-latest, ubuntu-latest and macOS-latest.

  • iwr-req-103: The action shall support self-hosted runners if they are running Windows Server 2019 Standard, or later.

  • iwr-req-104: The action shall invoke a web request. The characteristics of the web request can be defined by supplying input arguments to the action. The behaviour of the web request shall act consistently according to the input arguments only, and shall not depend on the platform of the runner.

Inputs

method

  • iwr-req-200: The action shall take the input argument method, which should be any of the following values (case-sensitive): DEFAULT, DELETE, GET, HEAD, MERGE, OPTIONS, PATCH, POST, PUT or TRACE.

  • iwr-req-201: The method argument shall be validated (including the case sensitivity), and if the validation fails then the action should fail and throw an error.

  • iwr-req-202: The method input argument is optional and if it is not supplied then the default value shall be GET.

  • iwr-req-203: The method input argument shall be hardened against injection-style attacks so that it is not possible to perform arbitrary console commands from arbitrary user input.

uri

  • iwr-req-204: The action shall take the input argument uri, which should be a valid resource URI. This shall be the uri for the web request.

  • iwr-req-205: The uri argument should be validated: the length of the uri should be less than or equal to 2047 characters, and the uri should start with a valid protocol (case-sensitive): http or https.

  • iwr-req-206: The uri input argument shall be hardened against injection-style attacks so that it is not possible to perform arbitrary console commands from arbitrary user input.

content-type

  • iwr-req-207: The action shall take the input argument content-type, which should be any valid content type i.e. text/plain or text/plain; charset=iso-8859-5.

  • iwr-req-208: The content-type argument shall be validated: the full length of content-type should be less than or equal to 255 characters.

  • iwr-req-209: The media-type part of the content-type should be validated: it should be one of the following: text/plain, application/octet-stream, text/css, text/csv, text/html, application/json, application/ld+json, text/javascript, application/pdf, application/xml or application/zip.

  • iwr-req-210: The charset part of the content-type should be validated: it should be excluded, or be a preceding space and then one of the following: utf-8 or iso-8859-5.

  • iwr-req-211: The content-type input argument is optional, and if it is not supplied then the default value shall be application/json, which is the default value of certain developer tools, such as Postman.

  • iwr-req-212: The content-type input argument shall be hardened against injection-style attacks so that it is not possible to perform arbitrary console commands from arbitrary user input.

save

  • iwr-req-213: The action shall take the input argument save, which should be a valid file name, either relative or absolute.

  • iwr-req-214: The save argument shall be validated: the full length of save should be less than or equal to 255 characters. Since save can be a relative file path, the actual filename might be longer than this. We will not attempt to validate this scenario, but the documentation should contain a warning that long file paths do not behave consistently between every platform.

  • iwr-req-215: The save input argument is optional, and if it is not supplied then the result of the web request is not saved to any file.

  • iwr-req-216: The save input argument shall be hardened against injection-style attacks so that it is not possible to perform arbitrary console commands from arbitrary user input.

  • iwr-req-217: To mitigate an attack using relative path mechanisms, the save input argument shall only write the output to a file that does not exist. If the file already exists, then an error shall be thrown and the file will not be overwritten.

user-agent

  • iwr-req-218: The action shall take the user-agent input argument, which shall be any valid user agent.

  • iwr-req-219: The user-agent argument shall be validated: the full length of user-agent should be less than or equal to 255 characters.

  • iwr-req-220: The user-agent input argument is optional, and if it is not supplied then it shall be Mozilla/5.0 (compatible; invoke-uri/1.0 for GitHub Actions).

  • iwr-req-221: The user-agent input argument shall be hardened against injection-style attacks so that it is not possible to perform arbitrary console commands from arbitrary user input.