SNOW-761004 Added URL Validator and URL escaping of strings

[sfc-gh-hchaturvedi]

Please answer these questions before submitting your pull requests. Thanks!

1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-761004

2. Fill out the following pre-review checklist:

   • I am adding a new automated test(s) to verify correctness of my new code
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am modifying authorization mechanisms
   • I am adding new credentials
   • I am modifying OCSP code
   • I am adding a new dependency

3. Please describe how your code solves the related issue.

   Currently Python connector does not ensure the validity of the SSO URL and just opens it in the browser. The connector should ensure that the URL is a valid HTTP / HTTPS URL before passing it to the Browser. This PR also adds support for URL encoding strings. This will be used later for encoding Base64 OCSP requests before sending them to the OCSP Responder.

[github-actions]

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[sfc-gh-hchaturvedi]

I have read the CLA Document and I hereby sign the CLA

[codecov]

Codecov Report

Merging #1480 (e37b53c) into main (4b1d474) will increase coverage by 0.09%.
The diff coverage is 100.00%.

❗ Current head e37b53c differs from pull request most recent head 3f1c345. Consider uploading reports for the commit 3f1c345 to get more accurate results

@@            Coverage Diff             @@
##             main    #1480      +/-   ##
==========================================
+ Coverage   81.90%   81.99%   +0.09%     
==========================================
  Files          60       61       +1     
  Lines        8598     8616      +18     
  Branches     1271     1273       +2     
==========================================
+ Hits         7042     7065      +23     
+ Misses       1223     1218       -5     
  Partials      333      333              

Impacted Files	Coverage Δ
src/snowflake/connector/snow_logging.py	56.75% <ø> (ø)
src/snowflake/connector/auth/webbrowser.py	71.27% <100.00%> (+0.78%)	⬆️
src/snowflake/connector/url_util.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[sfc-gh-mkeller]

Please rebase your PR @sfc-gh-hchaturvedi we have updated the license header years to include 2023

[sfc-gh-kdama]

@sfc-gh-mkeller @sfc-gh-hchaturvedi is this good to merge?

[sfc-gh-stan]

When does target evaluate to None?
Why do we need this wrapper if it's just a one-liner calling urllib.parse.quote_plus?

[sfc-gh-hchaturvedi]

This will be part of the OCSP Code base where we need to make sure all the OCSP Request besides being baset64 encoded are also URL Encoded. The OCSP Code base depends a lot on what is received int the certificate from the Certificate authority. If in case the information is bad and the certificate request generated turns out to be None this case should catch that. This utility function also gives us the ability to add more such cases which I am sure there will be.

[sfc-gh-kdama]

@sfc-gh-hchaturvedi @sfc-gh-stan checking status on this as the release is waiting on this. Looks the merge gates are failing on this.

[sfc-gh-aling]

we also need to ignore the import error otherwise other driver just doesn't have this module or we vendor the method in the tests folder

Suggested change

	from snowflake.connector.url_util import is_valid_url, url_encode_str
	try:
	from snowflake.connector.url_util import is_valid_url, url_encode_str
	except ImportError:
	is_valid_url = None
	url_encode_str = None

[sfc-gh-mkeller]

🚢 🚢