instgram cookies cause youtube-dl cookie file to broken

[EhsanCh]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.03.08
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: [u'-4', u'--cookies', u'/home/youtube-cookie.txt']
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://www.instagram.com/p/B9g4ilHJOv7/']
/usr/lib64/python2.7/_MozillaCookieJar.py:109: UserWarning: cookielib bug!
Traceback (most recent call last):
  File "/usr/lib64/python2.7/_MozillaCookieJar.py", line 71, in _really_load
    line.split("\t")
ValueError: too many values to unpack

  _warn_unhandled_exception()
Traceback (most recent call last):
  File "/usr/lib64/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib64/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/bin/youtube-dl/__main__.py", line 19, in <module>
  File "/usr/bin/youtube-dl/youtube_dl/__init__.py", line 474, in main
  File "/usr/bin/youtube-dl/youtube_dl/__init__.py", line 441, in _real_main
  File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 419, in __init__
  File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2329, in _setup_opener
  File "/usr/bin/youtube-dl/youtube_dl/utils.py", line 2762, in load
  File "/usr/lib64/python2.7/_MozillaCookieJar.py", line 111, in _really_load
    (filename, line))
cookielib.LoadError: invalid Netscape format cookies file u'/home/youtube-cookie.txt': u'.instagram.com\tTRUE\t/\tTRUE\t0\turlgen\t"{\\"45.12.3.45\\":\t24940}:1jBJ5c:yMVdw1trErKtMZlJkGK3zfvFI4U"'

Description

When downloading instagram video, it sent a cookie like :
"{\"45.12.3.45\": 24940}:1jBJ5c:yMVdw1trErKtMZlJkGK3zfvFI4U"
and write a line in cookie file:
.instagram.com TRUE / TRUE 0 urlgen "{\"45.12.3.45\": 24940}:1jBJ5c:yMVdw1trErKtMZlJkGK3zfvFI4U"
causing cookie file to be invalid for next youtube-dl run.

[dstftw]

Malformed cookie file. Cookie value is not allowed to contain spaces.

[kruug]

Used this tool: https://github.com/lennonhill/cookies-txt

Now you're telling me that the tool to export a Netscape Compatible cookie file isn't exporting a Netscape cookie file? It seems like shoddy dev work on your team...

[EhsanCh]

Cookie version 0 does not allow cookies but v1 allow cookies.
According to RFC 2109, "HTTP State Management Mechanism", white space in cookie values must be encoded or the entire value must be quoted .(source)
As we cannot ask instagram to use cookie version 0, youtube-dl should be updated.

[EhsanCh]

As a quick fix, youtube-dl can at least ignore such cookies and don't stop for such errors...
then cookie component should be fixed, if it require more time.

@dstftw Please reopen this issue and remove invalid label.

[dstftw]

RFC2109 is obsolete. Current RFC 6265 clearly disallows spaces inside cookie values.