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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
304 lines
14 KiB
C++
304 lines
14 KiB
C++
/*
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* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "CookieJar.h"
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#include <AK/IPv4Address.h>
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#include <AK/StringBuilder.h>
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#include <AK/URL.h>
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#include <AK/Vector.h>
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#include <LibWeb/Cookie/ParsedCookie.h>
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namespace Browser {
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String CookieJar::get_cookie(const URL& url, Web::Cookie::Source source)
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{
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purge_expired_cookies();
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auto domain = canonicalize_domain(url);
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if (!domain.has_value())
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return {};
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Vector<Web::Cookie::Cookie*> cookie_list = get_matching_cookies(url, domain.value(), source);
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StringBuilder builder;
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for (const auto* cookie : cookie_list) {
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// If there is an unprocessed cookie in the cookie-list, output the characters %x3B and %x20 ("; ")
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if (!builder.is_empty())
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builder.append("; ");
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// Output the cookie's name, the %x3D ("=") character, and the cookie's value.
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builder.appendff("{}={}", cookie->name, cookie->value);
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}
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return builder.build();
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}
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void CookieJar::set_cookie(const URL& url, const Web::Cookie::ParsedCookie& parsed_cookie, Web::Cookie::Source source)
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{
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auto domain = canonicalize_domain(url);
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if (!domain.has_value())
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return;
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store_cookie(parsed_cookie, url, move(domain.value()), source);
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purge_expired_cookies();
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}
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void CookieJar::dump_cookies() const
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{
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static const char* key_color = "\033[34;1m";
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static const char* attribute_color = "\033[33m";
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static const char* no_color = "\033[0m";
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StringBuilder builder;
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builder.appendff("{} cookies stored\n", m_cookies.size());
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for (const auto& cookie : m_cookies) {
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builder.appendff("{}{}{} - ", key_color, cookie.key.name, no_color);
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builder.appendff("{}{}{} - ", key_color, cookie.key.domain, no_color);
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builder.appendff("{}{}{}\n", key_color, cookie.key.path, no_color);
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builder.appendff("\t{}Value{} = {}\n", attribute_color, no_color, cookie.value.value);
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builder.appendff("\t{}CreationTime{} = {}\n", attribute_color, no_color, cookie.value.creation_time.to_string());
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builder.appendff("\t{}LastAccessTime{} = {}\n", attribute_color, no_color, cookie.value.last_access_time.to_string());
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builder.appendff("\t{}ExpiryTime{} = {}\n", attribute_color, no_color, cookie.value.expiry_time.to_string());
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builder.appendff("\t{}Secure{} = {:s}\n", attribute_color, no_color, cookie.value.secure);
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builder.appendff("\t{}HttpOnly{} = {:s}\n", attribute_color, no_color, cookie.value.http_only);
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builder.appendff("\t{}HostOnly{} = {:s}\n", attribute_color, no_color, cookie.value.host_only);
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builder.appendff("\t{}Persistent{} = {:s}\n", attribute_color, no_color, cookie.value.persistent);
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}
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dbgln("{}", builder.build());
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}
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Optional<String> CookieJar::canonicalize_domain(const URL& url)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.1.2
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if (!url.is_valid())
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return {};
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// FIXME: Implement RFC 5890 to "Convert each label that is not a Non-Reserved LDH (NR-LDH) label to an A-label".
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return url.host().to_lowercase();
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}
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bool CookieJar::domain_matches(const String& string, const String& domain_string)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.1.3
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// A string domain-matches a given domain string if at least one of the following conditions hold:
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// The domain string and the string are identical.
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if (string == domain_string)
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return true;
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// All of the following conditions hold:
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// - The domain string is a suffix of the string.
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// - The last character of the string that is not included in the domain string is a %x2E (".") character.
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// - The string is a host name (i.e., not an IP address).
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if (!string.ends_with(domain_string))
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return false;
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if (string[string.length() - domain_string.length() - 1] != '.')
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return false;
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if (AK::IPv4Address::from_string(string).has_value())
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return false;
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return true;
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}
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bool CookieJar::path_matches(const String& request_path, const String& cookie_path)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.1.4
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// A request-path path-matches a given cookie-path if at least one of the following conditions holds:
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// The cookie-path and the request-path are identical.
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if (request_path == cookie_path)
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return true;
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if (request_path.starts_with(cookie_path)) {
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// The cookie-path is a prefix of the request-path, and the last character of the cookie-path is %x2F ("/").
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if (cookie_path.ends_with('/'))
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return true;
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// The cookie-path is a prefix of the request-path, and the first character of the request-path that is not included in the cookie-path is a %x2F ("/") character.
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if (request_path[cookie_path.length()] == '/')
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return true;
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}
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return false;
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}
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String CookieJar::default_path(const URL& url)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.1.4
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// 1. Let uri-path be the path portion of the request-uri if such a portion exists (and empty otherwise).
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String uri_path = url.path();
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// 2. If the uri-path is empty or if the first character of the uri-path is not a %x2F ("/") character, output %x2F ("/") and skip the remaining steps.
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if (uri_path.is_empty() || (uri_path[0] != '/'))
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return "/";
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StringView uri_path_view = uri_path;
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std::size_t last_separator = uri_path_view.find_last_of('/').value();
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// 3. If the uri-path contains no more than one %x2F ("/") character, output %x2F ("/") and skip the remaining step.
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if (last_separator == 0)
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return "/";
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// 4. Output the characters of the uri-path from the first character up to, but not including, the right-most %x2F ("/").
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return uri_path.substring(0, last_separator);
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}
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void CookieJar::store_cookie(const Web::Cookie::ParsedCookie& parsed_cookie, const URL& url, String canonicalized_domain, Web::Cookie::Source source)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.3
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// 2. Create a new cookie with name cookie-name, value cookie-value. Set the creation-time and the last-access-time to the current date and time.
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Web::Cookie::Cookie cookie { parsed_cookie.name, parsed_cookie.value };
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cookie.creation_time = Core::DateTime::now();
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cookie.last_access_time = cookie.creation_time;
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if (parsed_cookie.expiry_time_from_max_age_attribute.has_value()) {
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// 3. If the cookie-attribute-list contains an attribute with an attribute-name of "Max-Age": Set the cookie's persistent-flag to true.
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// Set the cookie's expiry-time to attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Max-Age".
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cookie.persistent = true;
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cookie.expiry_time = parsed_cookie.expiry_time_from_max_age_attribute.value();
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} else if (parsed_cookie.expiry_time_from_expires_attribute.has_value()) {
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// If the cookie-attribute-list contains an attribute with an attribute-name of "Expires": Set the cookie's persistent-flag to true.
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// Set the cookie's expiry-time to attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Expires".
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cookie.persistent = true;
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cookie.expiry_time = parsed_cookie.expiry_time_from_expires_attribute.value();
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} else {
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// Set the cookie's persistent-flag to false. Set the cookie's expiry-time to the latest representable gddate.
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cookie.persistent = false;
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cookie.expiry_time = Core::DateTime::create(9999, 12, 31, 23, 59, 59);
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}
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// 4. If the cookie-attribute-list contains an attribute with an attribute-name of "Domain":
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if (parsed_cookie.domain.has_value()) {
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// Let the domain-attribute be the attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Domain".
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cookie.domain = parsed_cookie.domain.value();
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}
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// 5. If the user agent is configured to reject "public suffixes" and the domain-attribute is a public suffix:
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// FIXME: Support rejection of public suffixes. The full list is here: https://publicsuffix.org/list/public_suffix_list.dat
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// 6. If the domain-attribute is non-empty:
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if (!cookie.domain.is_empty()) {
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// If the canonicalized request-host does not domain-match the domain-attribute: Ignore the cookie entirely and abort these steps.
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if (!domain_matches(canonicalized_domain, cookie.domain))
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return;
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// Set the cookie's host-only-flag to false. Set the cookie's domain to the domain-attribute.
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cookie.host_only = false;
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} else {
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// Set the cookie's host-only-flag to true. Set the cookie's domain to the canonicalized request-host.
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cookie.host_only = true;
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cookie.domain = move(canonicalized_domain);
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}
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// 7. If the cookie-attribute-list contains an attribute with an attribute-name of "Path":
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if (parsed_cookie.path.has_value()) {
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// Set the cookie's path to attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Path".
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cookie.path = parsed_cookie.path.value();
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} else {
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cookie.path = default_path(url);
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}
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// 8. If the cookie-attribute-list contains an attribute with an attribute-name of "Secure", set the cookie's secure-only-flag to true.
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cookie.secure = parsed_cookie.secure_attribute_present;
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// 9. If the cookie-attribute-list contains an attribute with an attribute-name of "HttpOnly", set the cookie's http-only-flag to false.
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cookie.http_only = parsed_cookie.http_only_attribute_present;
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// 10. If the cookie was received from a "non-HTTP" API and the cookie's http-only-flag is set, abort these steps and ignore the cookie entirely.
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if (source != Web::Cookie::Source::Http && cookie.http_only)
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return;
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// 11. If the cookie store contains a cookie with the same name, domain, and path as the newly created cookie:
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CookieStorageKey key { cookie.name, cookie.domain, cookie.path };
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if (auto old_cookie = m_cookies.find(key); old_cookie != m_cookies.end()) {
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// If the newly created cookie was received from a "non-HTTP" API and the old-cookie's http-only-flag is set, abort these
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// steps and ignore the newly created cookie entirely.
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if (source != Web::Cookie::Source::Http && old_cookie->value.http_only)
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return;
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// Update the creation-time of the newly created cookie to match the creation-time of the old-cookie.
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cookie.creation_time = old_cookie->value.creation_time;
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// Remove the old-cookie from the cookie store.
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m_cookies.remove(old_cookie);
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}
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// 12. Insert the newly created cookie into the cookie store.
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m_cookies.set(key, move(cookie));
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}
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Vector<Web::Cookie::Cookie*> CookieJar::get_matching_cookies(const URL& url, const String& canonicalized_domain, Web::Cookie::Source source)
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{
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// https://tools.ietf.org/html/rfc6265#section-5.4
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auto now = Core::DateTime::now();
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// 1. Let cookie-list be the set of cookies from the cookie store that meets all of the following requirements:
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Vector<Web::Cookie::Cookie*> cookie_list;
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for (auto& cookie : m_cookies) {
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// Either: The cookie's host-only-flag is true and the canonicalized request-host is identical to the cookie's domain.
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// Or: The cookie's host-only-flag is false and the canonicalized request-host domain-matches the cookie's domain.
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bool is_host_only_and_has_identical_domain = cookie.value.host_only && (canonicalized_domain == cookie.value.domain);
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bool is_not_host_only_and_domain_matches = !cookie.value.host_only && domain_matches(canonicalized_domain, cookie.value.domain);
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if (!is_host_only_and_has_identical_domain && !is_not_host_only_and_domain_matches)
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continue;
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// The request-uri's path path-matches the cookie's path.
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if (!path_matches(url.path(), cookie.value.path))
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continue;
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// If the cookie's secure-only-flag is true, then the request-uri's scheme must denote a "secure" protocol.
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if (cookie.value.secure && (url.protocol() != "https"))
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continue;
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// If the cookie's http-only-flag is true, then exclude the cookie if the cookie-string is being generated for a "non-HTTP" API.
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if (cookie.value.http_only && (source != Web::Cookie::Source::Http))
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continue;
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// 2. The user agent SHOULD sort the cookie-list in the following order:
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// - Cookies with longer paths are listed before cookies with shorter paths.
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// - Among cookies that have equal-length path fields, cookies with earlier creation-times are listed before cookies with later creation-times.
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cookie_list.insert_before_matching(&cookie.value, [&cookie](auto* entry) {
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if (cookie.value.path.length() > entry->path.length()) {
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return true;
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} else if (cookie.value.path.length() == entry->path.length()) {
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if (cookie.value.creation_time.timestamp() < entry->creation_time.timestamp())
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return true;
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}
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return false;
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});
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// 3. Update the last-access-time of each cookie in the cookie-list to the current date and time.
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cookie.value.last_access_time = now;
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}
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return cookie_list;
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}
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void CookieJar::purge_expired_cookies()
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{
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time_t now = Core::DateTime::now().timestamp();
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Vector<CookieStorageKey> keys_to_evict;
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for (const auto& cookie : m_cookies) {
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if (cookie.value.expiry_time.timestamp() < now)
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keys_to_evict.append(cookie.key);
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}
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for (const auto& key : keys_to_evict)
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m_cookies.remove(key);
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}
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}
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