Allow custom oauth_signature with PLAINTEXT method.

[JamesColeman-LW]

Expected Behavior

The option to customize the oauth_signature.

Actual Behavior

Unable to customize.

Reproduction Steps

1. Try to authenticate against MaaS 0-legged OAuth for authentication.

Is there an existing issue for this?

• I have searched the issue tracker for this problem.

Additional Information

The MaaS API weirdly implements oauth 1.0, more as an credential transmission. Documentation at https://maas.io/docs/how-to-authenticate-to-the-maas-api indicates the oauth_signature should be "&$secret". I do not seem to see a way to set this in Insomia, so I am unable to use it to test the API calls. When I make a call, I get the following error from MaaS:

Authorization Error: 'Invalid signature. Expected signature base string: &28gvXXXXXXXXXXXXXXXXXXWg'

Insomnia Version

9.2.0

What operating system are you using?

Other Linux

Operating System Version

Arch Linux

Installation method

Flathub

Last Known Working Insomnia version

No response