mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-25 17:10:23 +00:00
9b8f35259c
Since this is always set to true on the non-default constructor and subsequently never modified, it is somewhat pointless. Furthermore, there are arguably no invalid relative paths.
409 lines
13 KiB
C++
409 lines
13 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/CharacterTypes.h>
|
|
#include <AK/Debug.h>
|
|
#include <AK/LexicalPath.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/URL.h>
|
|
#include <AK/URLParser.h>
|
|
#include <AK/Utf8View.h>
|
|
|
|
namespace AK {
|
|
|
|
// FIXME: It could make sense to force users of URL to use URLParser::parse() explicitly instead of using a constructor.
|
|
URL::URL(StringView const& string)
|
|
: URL(URLParser::parse({}, string))
|
|
{
|
|
if constexpr (URL_PARSER_DEBUG) {
|
|
if (m_valid)
|
|
dbgln("URL constructor: Parsed URL to be '{}'.", serialize());
|
|
else
|
|
dbgln("URL constructor: Parsed URL to be invalid.");
|
|
}
|
|
}
|
|
|
|
String URL::path() const
|
|
{
|
|
if (cannot_be_a_base_url())
|
|
return paths()[0];
|
|
StringBuilder builder;
|
|
for (auto& path : m_paths) {
|
|
builder.append('/');
|
|
builder.append(path);
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
URL URL::complete_url(String const& string) const
|
|
{
|
|
if (!is_valid())
|
|
return {};
|
|
|
|
return URLParser::parse({}, string, this);
|
|
}
|
|
|
|
void URL::set_scheme(String scheme)
|
|
{
|
|
m_scheme = move(scheme);
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_username(String username)
|
|
{
|
|
m_username = move(username);
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_password(String password)
|
|
{
|
|
m_password = move(password);
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_host(String host)
|
|
{
|
|
m_host = move(host);
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_port(u16 port)
|
|
{
|
|
if (port == default_port_for_scheme(m_scheme)) {
|
|
m_port = 0;
|
|
return;
|
|
}
|
|
m_port = port;
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_paths(Vector<String> paths)
|
|
{
|
|
m_paths = move(paths);
|
|
m_valid = compute_validity();
|
|
}
|
|
|
|
void URL::set_query(String query)
|
|
{
|
|
m_query = move(query);
|
|
}
|
|
|
|
void URL::set_fragment(String fragment)
|
|
{
|
|
m_fragment = move(fragment);
|
|
}
|
|
|
|
// FIXME: This is by no means complete.
|
|
// NOTE: This relies on some assumptions about how the spec-defined URL parser works that may turn out to be wrong.
|
|
bool URL::compute_validity() const
|
|
{
|
|
if (m_scheme.is_empty())
|
|
return false;
|
|
|
|
if (m_scheme == "data") {
|
|
if (m_data_mime_type.is_empty())
|
|
return false;
|
|
if (m_data_payload_is_base64) {
|
|
if (m_data_payload.length() % 4 != 0)
|
|
return false;
|
|
for (auto character : m_data_payload) {
|
|
if (!is_ascii_alphanumeric(character) || character == '+' || character == '/' || character == '=')
|
|
return false;
|
|
}
|
|
}
|
|
} else if (m_cannot_be_a_base_url) {
|
|
if (m_paths.size() != 1)
|
|
return false;
|
|
if (m_paths[0].is_empty())
|
|
return false;
|
|
} else {
|
|
if (m_scheme.is_one_of("about", "mailto"))
|
|
return false;
|
|
// NOTE: Maybe it is allowed to have a zero-segment path.
|
|
if (m_paths.size() == 0)
|
|
return false;
|
|
}
|
|
|
|
// NOTE: A file URL's host should be the empty string for localhost, not null.
|
|
if (m_scheme == "file" && m_host.is_null())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool URL::scheme_requires_port(StringView const& scheme)
|
|
{
|
|
return (default_port_for_scheme(scheme) != 0);
|
|
}
|
|
|
|
u16 URL::default_port_for_scheme(StringView const& scheme)
|
|
{
|
|
if (scheme == "http")
|
|
return 80;
|
|
if (scheme == "https")
|
|
return 443;
|
|
if (scheme == "gemini")
|
|
return 1965;
|
|
if (scheme == "irc")
|
|
return 6667;
|
|
if (scheme == "ircs")
|
|
return 6697;
|
|
if (scheme == "ws")
|
|
return 80;
|
|
if (scheme == "wss")
|
|
return 443;
|
|
return 0;
|
|
}
|
|
|
|
URL URL::create_with_file_scheme(String const& path, String const& fragment, String const& hostname)
|
|
{
|
|
LexicalPath lexical_path(path);
|
|
if (!lexical_path.is_absolute())
|
|
return {};
|
|
|
|
URL url;
|
|
url.set_scheme("file");
|
|
// NOTE: If the hostname is localhost (or null, which implies localhost), it should be set to the empty string.
|
|
// This is because a file URL always needs a non-null hostname.
|
|
url.set_host(hostname.is_null() || hostname == "localhost" ? String::empty() : hostname);
|
|
url.set_paths(lexical_path.parts());
|
|
// NOTE: To indicate that we want to end the path with a slash, we have to append an empty path segment.
|
|
if (path.ends_with('/'))
|
|
url.append_path("");
|
|
url.set_fragment(fragment);
|
|
return url;
|
|
}
|
|
|
|
URL URL::create_with_url_or_path(String const& url_or_path)
|
|
{
|
|
URL url = url_or_path;
|
|
if (url.is_valid())
|
|
return url;
|
|
|
|
String path = LexicalPath::canonicalized_path(url_or_path);
|
|
return URL::create_with_file_scheme(path);
|
|
}
|
|
|
|
// https://url.spec.whatwg.org/#special-scheme
|
|
bool URL::is_special_scheme(StringView const& scheme)
|
|
{
|
|
return scheme.is_one_of("ftp", "file", "http", "https", "ws", "wss");
|
|
}
|
|
|
|
String URL::serialize_data_url() const
|
|
{
|
|
VERIFY(m_scheme == "data");
|
|
VERIFY(!m_data_mime_type.is_null());
|
|
VERIFY(!m_data_payload.is_null());
|
|
StringBuilder builder;
|
|
builder.append(m_scheme);
|
|
builder.append(':');
|
|
builder.append(m_data_mime_type);
|
|
if (m_data_payload_is_base64)
|
|
builder.append(";base64");
|
|
builder.append(',');
|
|
// NOTE: The specification does not say anything about encoding this, but we should encode at least control and non-ASCII
|
|
// characters (since this is also a valid representation of the same data URL).
|
|
builder.append(URL::percent_encode(m_data_payload, PercentEncodeSet::C0Control));
|
|
return builder.to_string();
|
|
}
|
|
|
|
// https://url.spec.whatwg.org/#concept-url-serializer
|
|
String URL::serialize(ExcludeFragment exclude_fragment) const
|
|
{
|
|
if (m_scheme == "data")
|
|
return serialize_data_url();
|
|
StringBuilder builder;
|
|
builder.append(m_scheme);
|
|
builder.append(':');
|
|
|
|
if (!m_host.is_null()) {
|
|
builder.append("//");
|
|
|
|
if (includes_credentials()) {
|
|
builder.append(percent_encode(m_username, PercentEncodeSet::Userinfo));
|
|
if (!m_password.is_empty()) {
|
|
builder.append(':');
|
|
builder.append(percent_encode(m_password, PercentEncodeSet::Userinfo));
|
|
}
|
|
builder.append('@');
|
|
}
|
|
|
|
builder.append(m_host);
|
|
if (m_port != 0)
|
|
builder.appendff(":{}", m_port);
|
|
}
|
|
|
|
if (cannot_be_a_base_url()) {
|
|
builder.append(percent_encode(m_paths[0], PercentEncodeSet::Path));
|
|
} else {
|
|
if (m_host.is_null() && m_paths.size() > 1 && m_paths[0].is_empty())
|
|
builder.append("/.");
|
|
for (auto& segment : m_paths) {
|
|
builder.append('/');
|
|
builder.append(percent_encode(segment, PercentEncodeSet::Path));
|
|
}
|
|
}
|
|
|
|
if (!m_query.is_null()) {
|
|
builder.append('?');
|
|
builder.append(percent_encode(m_query, is_special() ? URL::PercentEncodeSet::SpecialQuery : URL::PercentEncodeSet::Query));
|
|
}
|
|
|
|
if (exclude_fragment == ExcludeFragment::No && !m_fragment.is_null()) {
|
|
builder.append('#');
|
|
builder.append(percent_encode(m_fragment, PercentEncodeSet::Fragment));
|
|
}
|
|
|
|
return builder.to_string();
|
|
}
|
|
|
|
// https://url.spec.whatwg.org/#url-rendering
|
|
// NOTE: This does e.g. not display credentials.
|
|
// FIXME: Parts of the URL other than the host should have their sequences of percent-encoded bytes replaced with code points
|
|
// resulting from percent-decoding those sequences converted to bytes, unless that renders those sequences invisible.
|
|
String URL::serialize_for_display() const
|
|
{
|
|
VERIFY(m_valid);
|
|
if (m_scheme == "data")
|
|
return serialize_data_url();
|
|
StringBuilder builder;
|
|
builder.append(m_scheme);
|
|
builder.append(':');
|
|
|
|
if (!m_host.is_null()) {
|
|
builder.append("//");
|
|
builder.append(m_host);
|
|
if (m_port != 0)
|
|
builder.appendff(":{}", m_port);
|
|
}
|
|
|
|
if (cannot_be_a_base_url()) {
|
|
builder.append(percent_encode(m_paths[0], PercentEncodeSet::Path));
|
|
} else {
|
|
if (m_host.is_null() && m_paths.size() > 1 && m_paths[0].is_empty())
|
|
builder.append("/.");
|
|
for (auto& segment : m_paths) {
|
|
builder.append('/');
|
|
builder.append(percent_encode(segment, PercentEncodeSet::Path));
|
|
}
|
|
}
|
|
|
|
if (!m_query.is_null()) {
|
|
builder.append('?');
|
|
builder.append(percent_encode(m_query, is_special() ? URL::PercentEncodeSet::SpecialQuery : URL::PercentEncodeSet::Query));
|
|
}
|
|
|
|
if (!m_fragment.is_null()) {
|
|
builder.append('#');
|
|
builder.append(percent_encode(m_fragment, PercentEncodeSet::Fragment));
|
|
}
|
|
|
|
return builder.to_string();
|
|
}
|
|
|
|
bool URL::equals(URL const& other, ExcludeFragment exclude_fragments) const
|
|
{
|
|
if (this == &other)
|
|
return true;
|
|
if (!m_valid || !other.m_valid)
|
|
return false;
|
|
return serialize(exclude_fragments) == other.serialize(exclude_fragments);
|
|
}
|
|
|
|
String URL::basename() const
|
|
{
|
|
if (!m_valid)
|
|
return {};
|
|
if (m_paths.is_empty())
|
|
return {};
|
|
return m_paths.last();
|
|
}
|
|
|
|
void URL::append_percent_encoded(StringBuilder& builder, u32 code_point)
|
|
{
|
|
if (code_point <= 0x7f)
|
|
builder.appendff("%{:02X}", code_point);
|
|
else if (code_point <= 0x07ff)
|
|
builder.appendff("%{:02X}%{:02X}", ((code_point >> 6) & 0x1f) | 0xc0, (code_point & 0x3f) | 0x80);
|
|
else if (code_point <= 0xffff)
|
|
builder.appendff("%{:02X}%{:02X}%{:02X}", ((code_point >> 12) & 0x0f) | 0xe0, ((code_point >> 6) & 0x3f) | 0x80, (code_point & 0x3f) | 0x80);
|
|
else if (code_point <= 0x10ffff)
|
|
builder.appendff("%{:02X}%{:02X}%{:02X}%{:02X}", ((code_point >> 18) & 0x07) | 0xf0, ((code_point >> 12) & 0x3f) | 0x80, ((code_point >> 6) & 0x3f) | 0x80, (code_point & 0x3f) | 0x80);
|
|
else
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
// https://url.spec.whatwg.org/#c0-control-percent-encode-set
|
|
constexpr bool code_point_is_in_percent_encode_set(u32 code_point, URL::PercentEncodeSet set)
|
|
{
|
|
switch (set) {
|
|
case URL::PercentEncodeSet::C0Control:
|
|
return code_point < 0x20 || code_point > 0x7E;
|
|
case URL::PercentEncodeSet::Fragment:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::C0Control) || " \"<>`"sv.contains(code_point);
|
|
case URL::PercentEncodeSet::Query:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::C0Control) || " \"#<>"sv.contains(code_point);
|
|
case URL::PercentEncodeSet::SpecialQuery:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::Query) || code_point == '\'';
|
|
case URL::PercentEncodeSet::Path:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::Query) || "?`{}"sv.contains(code_point);
|
|
case URL::PercentEncodeSet::Userinfo:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::Path) || "/:;=@[\\]^|"sv.contains(code_point);
|
|
case URL::PercentEncodeSet::Component:
|
|
return code_point_is_in_percent_encode_set(code_point, URL::PercentEncodeSet::Userinfo) || "$%&+,"sv.contains(code_point);
|
|
case URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded:
|
|
return code_point >= 0x7E || !(is_ascii_alphanumeric(code_point) || "!'()~"sv.contains(code_point));
|
|
case URL::PercentEncodeSet::EncodeURI:
|
|
// NOTE: This is the same percent encode set that JS encodeURI() uses.
|
|
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURI
|
|
return code_point >= 0x7E || (!is_ascii_alphanumeric(code_point) && !";,/?:@&=+$-_.!~*'()#"sv.contains(code_point));
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
}
|
|
|
|
void URL::append_percent_encoded_if_necessary(StringBuilder& builder, u32 code_point, URL::PercentEncodeSet set)
|
|
{
|
|
if (code_point_is_in_percent_encode_set(code_point, set))
|
|
append_percent_encoded(builder, code_point);
|
|
else
|
|
builder.append_code_point(code_point);
|
|
}
|
|
|
|
String URL::percent_encode(StringView const& input, URL::PercentEncodeSet set)
|
|
{
|
|
StringBuilder builder;
|
|
for (auto code_point : Utf8View(input)) {
|
|
append_percent_encoded_if_necessary(builder, code_point, set);
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
String URL::percent_decode(StringView const& input)
|
|
{
|
|
if (!input.contains('%'))
|
|
return input;
|
|
StringBuilder builder;
|
|
Utf8View utf8_view(input);
|
|
for (auto it = utf8_view.begin(); !it.done(); ++it) {
|
|
if (*it != '%') {
|
|
builder.append_code_point(*it);
|
|
} else if (!is_ascii_hex_digit(it.peek(1).value_or(0)) || !is_ascii_hex_digit(it.peek(2).value_or(0))) {
|
|
builder.append_code_point(*it);
|
|
} else {
|
|
++it;
|
|
u8 byte = parse_ascii_hex_digit(*it) << 4;
|
|
++it;
|
|
byte += parse_ascii_hex_digit(*it);
|
|
builder.append(byte);
|
|
}
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
}
|