Browser: Add debug command to dump cookies

Using document.cookie only lets the test page see the name/value pair;
the value returned will not included the parsed attributes.

Userland/Applications/Browser/CookieJar.cpp

@@ -27,6 +27,7 @@
 #include "CookieJar.h"
 #include <AK/AllOf.h>
 #include <AK/NumericLimits.h>
+#include <AK/StringBuilder.h>
 #include <AK/URL.h>
 #include <ctype.h>
 
@@ -77,6 +78,32 @@ void CookieJar::set_cookie(const URL& url, const String& cookie_string)
     it->value.append(move(*new_cookie));
 }
 
+void CookieJar::dump_cookies() const
+{
+    static const char* url_color = "\033[34;1m";
+    static const char* cookie_color = "\033[31m";
+    static const char* attribute_color = "\033[33m";
+    static const char* no_color = "\033[0m";
+
+    StringBuilder builder;
+    builder.appendff("{} URLs with cookies\n", m_cookies.size());
+
+    for (const auto& url_and_cookies : m_cookies) {
+        builder.appendff("{}Cookies for:{} {}\n", url_color, no_color, url_and_cookies.key.is_empty() ? "file://" : url_and_cookies.key);
+
+        for (const auto& cookie : url_and_cookies.value) {
+            builder.appendff("\t{}{}{} = {}{}{}\n", cookie_color, cookie.name, no_color, cookie_color, cookie.value, no_color);
+            builder.appendff("\t\t{}Expiry{} = {}\n", attribute_color, no_color, cookie.expiry_time.to_string());
+            builder.appendff("\t\t{}Domain{} = {}\n", attribute_color, no_color, cookie.domain);
+            builder.appendff("\t\t{}Path{} = {}\n", attribute_color, no_color, cookie.path);
+            builder.appendff("\t\t{}Secure{} = {:s}\n", attribute_color, no_color, cookie.secure);
+            builder.appendff("\t\t{}HttpOnly{} = {:s}\n", attribute_color, no_color, cookie.http_only);
+        }
+    }
+
+    dbgln("{}", builder.build());
+}
+
 Optional<String> CookieJar::canonicalize_domain(const URL& url)
 {
     // https://tools.ietf.org/html/rfc6265#section-5.1.2

Userland/Applications/Browser/CookieJar.h

@@ -48,6 +48,7 @@ class CookieJar {
 public:
     String get_cookie(const URL& url) const;
     void set_cookie(const URL& url, const String& cookie);
+    void dump_cookies() const;
 
 private:
     static Optional<String> canonicalize_domain(const URL& url);

Userland/Applications/Browser/Tab.cpp

@@ -440,6 +440,10 @@ Tab::Tab(Type type)
     debug_menu.add_action(GUI::Action::create("Dump &History", { Mod_Ctrl, Key_H }, [&](auto&) {
         m_history.dump();
     }));
+    debug_menu.add_action(GUI::Action::create("Dump C&ookies", [&](auto&) {
+        if (on_dump_cookies)
+            on_dump_cookies();
+    }));
     debug_menu.add_separator();
     auto line_box_borders_action = GUI::Action::create_checkable(
         "&Line Box Borders", [this](auto& action) {

Userland/Applications/Browser/Tab.h

@@ -72,6 +72,7 @@ public:
     Function<void(const Gfx::Bitmap&)> on_favicon_change;
     Function<String(const URL& url)> on_get_cookie;
     Function<void(const URL& url, const String& cookie)> on_set_cookie;
+    Function<void()> on_dump_cookies;
 
     const String& title() const { return m_title; }
     const Gfx::Bitmap* icon() const { return m_icon; }

Userland/Applications/Browser/main.cpp

@@ -227,6 +227,10 @@ int main(int argc, char** argv)
             cookie_jar.set_cookie(url, cookie);
         };
 
+        new_tab.on_dump_cookies = [&]() {
+            cookie_jar.dump_cookies();
+        };
+
         new_tab.load(url);
 
         dbgln("Added new tab {:p}, loading {}", &new_tab, url);