Some valid cookies cause youtube-dl to break

[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

According to RFC 6265 , white space allowed in cookie values with double quote:

4.1.1. Syntax

Informally, the Set-Cookie response header contains the header name
"Set-Cookie" followed by a ":" and a cookie. Each cookie begins with
a name-value-pair, followed by zero or more attribute-value pairs.
Servers SHOULD NOT send Set-Cookie headers that fail to conform to
the following grammar:
set-cookie-header = "Set-Cookie:" SP set-cookie-string
set-cookie-string = cookie-pair *( ";" SP cookie-av )
cookie-pair = cookie-name "=" cookie-value
cookie-name = token
cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
; US-ASCII characters excluding CTLs,
; whitespace DQUOTE, comma, semicolon,
; and backslash

if you don't fix this issue, youtube-dl will break after downloading any link from Instagram or other sites that send cookies with space. it can be used by a mechanism to break youtube-dl.

NOTE: i re-created this issue because #24299 closed without acceptable response !!!
When downloading Instagram video, it sent a cookie like :
"{\"45.12.3.45\": 24940}:1jBJ5c:yMVdw1trErKtMZlJkGK3zfvFI4U"
and write a line in cookie file that cause cookie file to be invalid for next youtube-dl run.
Instagram does not send invalid cookie and its cookies are accepted in all major browsers like Chrome of Firefox.

[harryt04]

I'm getting this same issue with youtube-dl version 2020.03.08

/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/cookiejar.py:2076: UserWarning: http.cookiejar bug!
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/cookiejar.py", line 2038, in _really_load
    line.split("\t")
ValueError: too many values to unpack (expected 7)

  _warn_unhandled_exception()
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/cookiejar.py", line 2038, in _really_load
    line.split("\t")
ValueError: too many values to unpack (expected 7)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/site-packages/youtube_dl/__init__.py", line 474, in main
    _real_main(argv)
  File "/usr/local/lib/python3.7/site-packages/youtube_dl/__init__.py", line 441, in _real_main
    with YoutubeDL(ydl_opts) as ydl:
  File "/usr/local/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 419, in __init__
    self._setup_opener()
  File "/usr/local/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 2329, in _setup_opener
    self.cookiejar.load(ignore_discard=True, ignore_expires=True)
  File "/usr/local/lib/python3.7/site-packages/youtube_dl/utils.py", line 2762, in load
    self._really_load(cf, filename, ignore_discard, ignore_expires)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/http/cookiejar.py", line 2078, in _really_load
    (filename, line))
http.cookiejar.LoadError: invalid Netscape format cookies file './drew.txt': 'blytzpay.udemy.com\tFALSE\t/\tFALSE\t1628122050\tud_last_auth_information\t"{\\"backend\\":\t\\"udemy-auth\\"\\054\t\\"suggested_user_email\\":\t\\"drew.royster@blytzpay.com\\"\\054\t\\"suggested_user_name\\":\t\\"Drew\\"\\054\t\\"suggested_user_avatar\\":\t\\"https://i.udemycdn.com/user/50x50/anonymous_3.png\\"}:1izrBB:SRdOKBOmvPVX6TBhhA56N3gW62s"'

[harryt04]

Downgrading to version 2020.03.06 resolves my issue. Although a proper fix moving forward would be nice.

[dstftw]

For those who have troubles reading english:

cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
; US-ASCII characters excluding CTLs,
; whitespace DQUOTE, comma, semicolon,
; and backslash

Space is %x20.

Next, comment clearly states:

; US-ASCII characters excluding CTLs,
; whitespace DQUOTE, comma, semicolon,
; and backslash

and with errata 5518 applied:

; US-ASCII characters excluding CTLs,
; whitespace, DQUOTE, comma, semicolon,
; and backslash

US-ASCII characters excluding CTLs, whitespace, DQUOTE, comma, semicolon, and backslash

excluding whitespace