A simple program to modify the cookies.txt (Netscape) file created by curl. The file will be modified in-place so back up your cookies if you care about them before using this program.
A very simple Makefile is included
netscape-cookiejar <option> <Netscape HTTP cookie file>
Sets or replaces a cookie. It loosely follows RFC 6265 section 4.1 and supports the cookie-name=cookie-value, Domain, Path, Max-Age, Secure, and HttpOnly directives. It does not support Expires because I'm lazy (it will tell you to use Max-Age.) It will replace an existing cookie by name, domain, and path. See the Set-Cookie MDN doc for more.
$ netscape-cookiejar 'Set-Cookie foo=bar; Domain=www.example.com; Path=/; Max-Age=1337; Secure' cookies.txt
Cookies can be deleted with the --evict option. Substitute Name, Domain, or Path with '*' to match any cookie by that directive.
$ netscape-cookiejar --evict foo www.example.com / cookies.txt # delete an exact cookie
$ netscape-cookiejar --evict \* www.example.com \* cookies.txt # delete any cookies for the www.example.com Domain
$ netscape-cookiejar -e \* \* \* cookies.txt # delete all your cookies
Prints the cookies as a null-terminated JSON array of cookie objects to stdout. The cookie object will have name, value, domain, and path strings; an expires number (unix time;) and httponly and secure booleans.
$ netscape-cookiejar --json cookies.txt | jq '.'
[
{
"name": "foo",
"value": "bar",
"domain": "www.example.com",
"path": "/",
"expires": 1538143943,
"httponly": false,
"secure": true
},
null
]