kooky

Reaching into browser-specific, vaguely documented, possibly concurrently modified cookie stores to pilfer cookies is a bad idea. Since you've arrived here, you're almost certainly going to do it anyway. Me too. And if we're going to do the Wrong Thing, at least let's try to Do it Right.

Package kooky contains routines to reach into cookie stores for Chrome, Firefox, Safari, ... and retrieve the cookies.

It aspires to be pure Go (I spent quite a while making go-sqlite/sqlite3 work for it).

It also aspires to work for all major browsers, on all three major platforms.

Status

Basic functionality works on Windows, MacOS and Linux. Some functions might not yet be implemented on some platforms. The API is currently not expected to be at all stable.

PRs more than welcome.

Example usage

Any Browser - Cookie Filter Usage

package main

import (
    "fmt"

    "github.com/browserutils/kooky"
    _ "github.com/browserutils/kooky/browser/all" // register cookie store finders!
)

func main() {
    // uses registered finders to find cookie store files in default locations
    // applies the passed filters "Valid", "DomainHasSuffix()" and "Name()" in order to the cookies
    cookiesSeq := kooky.TraverseCookies(context.TODO(), kooky.Valid, kooky.DomainHasSuffix(`google.com`), kooky.Name(`NID`)).OnlyCookies()

    for cookie := range cookiesSeq {
        fmt.Println(cookie.Domain, cookie.Name, cookie.Value)
    }
 }

Chrome on macOS

package main

import (
    "fmt"
    "log"
    "os"

    "github.com/browserutils/kooky/browser/chrome"
)

func main() {
    dir, _ := os.UserConfigDir() // "/<USER>/Library/Application Support/"
    cookiesFile := dir + "/Google/Chrome/Default/Cookies"
    cookiesSeq := chrome.TraverseCookies(cookiesFile).OnlyCookies()
    for cookie := range cookiesSeq {
        fmt.Println(cookie)
    }
}

Safari

package main

import (
    "fmt"
    "log"
    "os"

    "github.com/browserutils/kooky/browser/safari"
)

func main() {
    dir, _ := os.UserHomeDir()
    cookiesFile := dir + "/Library/Containers/com.apple.Safari/Data/Library/Cookies/Cookies.binarycookies"
    cookiesSeq := safari.TraverseCookies(cookiesFile).OnlyCookies()
    for cookie := range cookiesSeq {
        fmt.Println(cookie)
    }
}

Thanks/references

• Thanks to @dacort for MacOS cookie decrypting code at dacort/cookiemonster.go.
• Thanks to @as0ler (and originally @satishb3 I believe) for Safari cookie-reading Python code at as0ler/BinaryCookieReader.
• Thanks to all the people who have contributed functionality and fixes:
  • @srlehn - many fixes, Linux support for Chrome, added about a dozen browsers!
  • @zippoxer - Windows support for Chrome
  • @adamdecaf - Firefox support
  • @barnardb - better row abstraction, fixing column length errors