mirror of
https://github.com/LibreOffice/core.git
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2990620e20
We use the same funciton all over the place, so create a common function in o3tl and use that in all instances where we duplicated the code. Change-Id: I74091fbbde8c2ba8c7e4ab30194ab53e2a338e52 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/180372 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
380 lines
11 KiB
C++
380 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "UriReference.hxx"
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#include <com/sun/star/lang/IllegalArgumentException.hpp>
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#include <com/sun/star/lang/XServiceInfo.hpp>
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#include <com/sun/star/uno/Reference.hxx>
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#include <com/sun/star/uno/Sequence.hxx>
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#include <com/sun/star/uri/XUriSchemeParser.hpp>
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#include <com/sun/star/uri/XVndSunStarScriptUrlReference.hpp>
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#include <cppuhelper/implbase.hxx>
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#include <cppuhelper/supportsservice.hxx>
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#include <cppuhelper/weak.hxx>
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#include <rtl/character.hxx>
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#include <rtl/uri.hxx>
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#include <rtl/ustrbuf.hxx>
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#include <rtl/ustring.hxx>
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#include <sal/types.h>
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#include <o3tl/safeint.hxx>
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#include <o3tl/numeric.hxx>
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#include <string_view>
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namespace com::sun::star::uno { class XComponentContext; }
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namespace com::sun::star::uno { class XInterface; }
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namespace com::sun::star::uri { class XUriReference; }
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namespace {
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int parseEscaped(std::u16string_view part, sal_Int32 * index) {
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if (part.size() - *index < 3 || part[*index] != '%') {
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return -1;
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}
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int n1 = o3tl::convertToHex<int>(part[*index + 1]);
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int n2 = o3tl::convertToHex<int>(part[*index + 2]);
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if (n1 < 0 || n2 < 0) {
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return -1;
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}
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*index += 3;
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return (n1 << 4) | n2;
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}
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OUString parsePart(
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std::u16string_view part, bool namePart, sal_Int32 * index)
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{
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OUStringBuffer buf(64);
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while (o3tl::make_unsigned(*index) < part.size()) {
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sal_Unicode c = part[*index];
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if (namePart ? c == '?' : c == '&' || c == '=') {
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break;
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} else if (c == '%') {
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sal_Int32 i = *index;
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int n = parseEscaped(part, &i);
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if (n >= 0 && n <= 0x7F) {
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buf.append(static_cast< sal_Unicode >(n));
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} else if (n >= 0xC0 && n <= 0xFC) {
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sal_Int32 encoded;
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int shift;
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sal_Int32 min;
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if (n <= 0xDF) {
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encoded = (n & 0x1F) << 6;
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shift = 0;
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min = 0x80;
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} else if (n <= 0xEF) {
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encoded = (n & 0x0F) << 12;
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shift = 6;
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min = 0x800;
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} else if (n <= 0xF7) {
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encoded = (n & 0x07) << 18;
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shift = 12;
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min = 0x10000;
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} else if (n <= 0xFB) {
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encoded = (n & 0x03) << 24;
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shift = 18;
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min = 0x200000;
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} else {
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encoded = 0;
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shift = 24;
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min = 0x4000000;
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}
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bool utf8 = true;
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for (; shift >= 0; shift -= 6) {
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n = parseEscaped(part, &i);
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if (n < 0x80 || n > 0xBF) {
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utf8 = false;
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break;
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}
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encoded |= (n & 0x3F) << shift;
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}
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if (!utf8 || !rtl::isUnicodeScalarValue(encoded)
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|| encoded < min)
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{
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break;
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}
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buf.appendUtf32(encoded);
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} else {
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break;
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}
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*index = i;
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} else {
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buf.append(c);
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++*index;
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}
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}
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return buf.makeStringAndClear();
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}
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OUString encodeNameOrParamFragment(OUString const & fragment) {
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static constexpr auto nameOrParamFragment = rtl::createUriCharClass(
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u8"!$'()*+,-.0123456789:;@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]_abcdefghijklmnopqrstuvwxyz~");
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return rtl::Uri::encode(
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fragment, nameOrParamFragment.data(), rtl_UriEncodeIgnoreEscapes,
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RTL_TEXTENCODING_UTF8);
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}
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bool parseSchemeSpecificPart(std::u16string_view part) {
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size_t len = part.size();
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sal_Int32 i = 0;
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if (parsePart(part, true, &i).isEmpty() || part[0] == '/') {
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return false;
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}
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if (o3tl::make_unsigned(i) == len) {
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return true;
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}
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for (;;) {
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++i; // skip '?' or '&'
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if (parsePart(part, false, &i).isEmpty() || o3tl::make_unsigned(i) == len
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|| part[i] != '=')
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{
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return false;
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}
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++i;
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parsePart(part, false, &i);
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if (o3tl::make_unsigned(i) == len) {
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return true;
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}
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if (part[i] != '&') {
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return false;
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}
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}
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}
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class UrlReference:
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public cppu::WeakImplHelper<css::uri::XVndSunStarScriptUrlReference>
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{
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public:
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UrlReference(OUString const & scheme, OUString const & path):
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m_base(
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scheme, false, OUString(), path, false, OUString())
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{}
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UrlReference(const UrlReference&) = delete;
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UrlReference& operator=(const UrlReference&) = delete;
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virtual OUString SAL_CALL getUriReference() override
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{ return m_base.getUriReference(); }
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virtual sal_Bool SAL_CALL isAbsolute() override
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{ return m_base.isAbsolute(); }
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virtual OUString SAL_CALL getScheme() override
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{ return m_base.getScheme(); }
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virtual OUString SAL_CALL getSchemeSpecificPart() override
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{ return m_base.getSchemeSpecificPart(); }
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virtual sal_Bool SAL_CALL isHierarchical() override
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{ return m_base.isHierarchical(); }
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virtual sal_Bool SAL_CALL hasAuthority() override
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{ return m_base.hasAuthority(); }
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virtual OUString SAL_CALL getAuthority() override
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{ return m_base.getAuthority(); }
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virtual OUString SAL_CALL getPath() override
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{ return m_base.getPath(); }
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virtual sal_Bool SAL_CALL hasRelativePath() override
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{ return m_base.hasRelativePath(); }
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virtual sal_Int32 SAL_CALL getPathSegmentCount() override
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{ return m_base.getPathSegmentCount(); }
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virtual OUString SAL_CALL getPathSegment(sal_Int32 index) override
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{ return m_base.getPathSegment(index); }
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virtual sal_Bool SAL_CALL hasQuery() override
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{ return m_base.hasQuery(); }
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virtual OUString SAL_CALL getQuery() override
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{ return m_base.getQuery(); }
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virtual sal_Bool SAL_CALL hasFragment() override
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{ return m_base.hasFragment(); }
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virtual OUString SAL_CALL getFragment() override
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{ return m_base.getFragment(); }
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virtual void SAL_CALL setFragment(OUString const & fragment) override
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{ m_base.setFragment(fragment); }
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virtual void SAL_CALL clearFragment() override
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{ m_base.clearFragment(); }
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virtual OUString SAL_CALL getName() override;
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virtual void SAL_CALL setName(OUString const & name) override;
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virtual sal_Bool SAL_CALL hasParameter(OUString const & key) override;
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virtual OUString SAL_CALL getParameter(OUString const & key) override;
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virtual void SAL_CALL setParameter(OUString const & key, OUString const & value) override;
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private:
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virtual ~UrlReference() override {}
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sal_Int32 findParameter(std::u16string_view key) const;
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stoc::uriproc::UriReference m_base;
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};
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OUString UrlReference::getName() {
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std::lock_guard g(m_base.m_mutex);
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sal_Int32 i = 0;
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return parsePart(m_base.m_path, true, &i);
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}
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void SAL_CALL UrlReference::setName(OUString const & name)
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{
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if (name.isEmpty())
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throw css::lang::IllegalArgumentException(
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OUString(), *this, 1);
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std::lock_guard g(m_base.m_mutex);
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sal_Int32 i = 0;
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parsePart(m_base.m_path, true, &i);
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m_base.m_path = encodeNameOrParamFragment(name) + m_base.m_path.subView(i);
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}
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sal_Bool UrlReference::hasParameter(OUString const & key)
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{
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std::lock_guard g(m_base.m_mutex);
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return findParameter(key) >= 0;
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}
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OUString UrlReference::getParameter(OUString const & key)
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{
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std::lock_guard g(m_base.m_mutex);
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sal_Int32 i = findParameter(key);
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return i >= 0 ? parsePart(m_base.m_path, false, &i) : OUString();
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}
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void UrlReference::setParameter(OUString const & key, OUString const & value)
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{
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if (key.isEmpty())
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throw css::lang::IllegalArgumentException(
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OUString(), *this, 1);
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std::lock_guard g(m_base.m_mutex);
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sal_Int32 i = findParameter(key);
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bool bExistent = ( i>=0 );
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if (!bExistent) {
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i = m_base.m_path.getLength();
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}
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OUStringBuffer newPath(128);
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newPath.append(m_base.m_path.subView(0, i));
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if (!bExistent) {
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newPath.append( m_base.m_path.indexOf('?') < 0 ? '?' : '&' );
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newPath.append(encodeNameOrParamFragment(key) + "=");
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}
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newPath.append(encodeNameOrParamFragment(value));
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if (bExistent) {
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/*oldValue = */
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parsePart(m_base.m_path, false, &i); // skip key
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newPath.append(m_base.m_path.subView(i));
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}
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m_base.m_path = newPath.makeStringAndClear();
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}
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sal_Int32 UrlReference::findParameter(std::u16string_view key) const {
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sal_Int32 i = 0;
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parsePart(m_base.m_path, true, &i); // skip name
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for (;;) {
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if (i == m_base.m_path.getLength()) {
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return -1;
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}
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++i; // skip '?' or '&'
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OUString k = parsePart(m_base.m_path, false, &i);
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++i; // skip '='
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if (k == key) {
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return i;
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}
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parsePart(m_base.m_path, false, &i); // skip value
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}
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}
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class Parser:
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public cppu::WeakImplHelper<
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css::lang::XServiceInfo, css::uri::XUriSchemeParser>
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{
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public:
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Parser() {}
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Parser(const Parser&) = delete;
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Parser& operator=(const Parser&) = delete;
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virtual OUString SAL_CALL getImplementationName() override;
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virtual sal_Bool SAL_CALL supportsService(OUString const & serviceName) override;
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virtual css::uno::Sequence< OUString > SAL_CALL
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getSupportedServiceNames() override;
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virtual css::uno::Reference< css::uri::XUriReference > SAL_CALL
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parse(
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OUString const & scheme, OUString const & schemeSpecificPart) override;
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private:
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virtual ~Parser() override {}
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};
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OUString Parser::getImplementationName()
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{
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return u"com.sun.star.comp.uri.UriSchemeParser_vndDOTsunDOTstarDOTscript"_ustr;
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}
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sal_Bool Parser::supportsService(OUString const & serviceName)
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{
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return cppu::supportsService(this, serviceName);
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}
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css::uno::Sequence< OUString > Parser::getSupportedServiceNames()
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{
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return { u"com.sun.star.uri.UriSchemeParser_vndDOTsunDOTstarDOTscript"_ustr };
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}
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css::uno::Reference< css::uri::XUriReference >
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Parser::parse(
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OUString const & scheme, OUString const & schemeSpecificPart)
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{
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if (!parseSchemeSpecificPart(schemeSpecificPart)) {
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return nullptr;
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}
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return new UrlReference(scheme, schemeSpecificPart);
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}
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
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com_sun_star_comp_uri_UriSchemeParser_vndDOTsunDOTstarDOTscript_get_implementation(css::uno::XComponentContext*,
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css::uno::Sequence<css::uno::Any> const &)
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{
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//TODO: single instance
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return ::cppu::acquire(new Parser());
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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