зеркало из https://github.com/mozilla/gecko-dev.git
564 строки
13 KiB
C++
564 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#include "URLSearchParams.h"
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#include "mozilla/dom/URLSearchParamsBinding.h"
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#include "mozilla/Encoding.h"
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#include "nsDOMString.h"
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#include "nsIInputStream.h"
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#include "nsStringStream.h"
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namespace mozilla {
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namespace dom {
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bool
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URLParams::Has(const nsAString& aName)
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{
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for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
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if (mParams[i].mKey.Equals(aName)) {
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return true;
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}
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}
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return false;
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}
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void
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URLParams::Get(const nsAString& aName, nsString& aRetval)
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{
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SetDOMStringToNull(aRetval);
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for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
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if (mParams[i].mKey.Equals(aName)) {
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aRetval.Assign(mParams[i].mValue);
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break;
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}
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}
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}
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void
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URLParams::GetAll(const nsAString& aName, nsTArray<nsString>& aRetval)
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{
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aRetval.Clear();
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for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
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if (mParams[i].mKey.Equals(aName)) {
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aRetval.AppendElement(mParams[i].mValue);
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}
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}
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}
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void
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URLParams::Append(const nsAString& aName, const nsAString& aValue)
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{
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Param* param = mParams.AppendElement();
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param->mKey = aName;
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param->mValue = aValue;
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}
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void
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URLParams::Set(const nsAString& aName, const nsAString& aValue)
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{
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Param* param = nullptr;
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for (uint32_t i = 0, len = mParams.Length(); i < len;) {
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if (!mParams[i].mKey.Equals(aName)) {
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++i;
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continue;
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}
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if (!param) {
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param = &mParams[i];
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++i;
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continue;
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}
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// Remove duplicates.
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mParams.RemoveElementAt(i);
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--len;
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}
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if (!param) {
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param = mParams.AppendElement();
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param->mKey = aName;
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}
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param->mValue = aValue;
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}
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bool
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URLParams::Delete(const nsAString& aName)
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{
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bool found = false;
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for (uint32_t i = 0; i < mParams.Length();) {
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if (mParams[i].mKey.Equals(aName)) {
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mParams.RemoveElementAt(i);
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found = true;
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} else {
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++i;
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}
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}
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return found;
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}
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void
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URLParams::ConvertString(const nsACString& aInput, nsAString& aOutput)
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{
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if (NS_FAILED(UTF_8_ENCODING->DecodeWithoutBOMHandling(aInput, aOutput))) {
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MOZ_CRASH("Out of memory when converting URL params.");
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}
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}
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void
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URLParams::DecodeString(const nsACString& aInput, nsAString& aOutput)
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{
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nsACString::const_iterator start, end;
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aInput.BeginReading(start);
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aInput.EndReading(end);
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nsCString unescaped;
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while (start != end) {
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// replace '+' with U+0020
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if (*start == '+') {
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unescaped.Append(' ');
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++start;
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continue;
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}
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// Percent decode algorithm
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if (*start == '%') {
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nsACString::const_iterator first(start);
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++first;
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nsACString::const_iterator second(first);
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++second;
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#define ASCII_HEX_DIGIT( x ) \
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((x >= 0x41 && x <= 0x46) || \
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(x >= 0x61 && x <= 0x66) || \
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(x >= 0x30 && x <= 0x39))
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#define HEX_DIGIT( x ) \
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(*x >= 0x30 && *x <= 0x39 \
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? *x - 0x30 \
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: (*x >= 0x41 && *x <= 0x46 \
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? *x - 0x37 \
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: *x - 0x57))
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if (first != end && second != end &&
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ASCII_HEX_DIGIT(*first) && ASCII_HEX_DIGIT(*second)) {
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unescaped.Append(HEX_DIGIT(first) * 16 + HEX_DIGIT(second));
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start = ++second;
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continue;
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} else {
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unescaped.Append('%');
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++start;
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continue;
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}
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}
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unescaped.Append(*start);
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++start;
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}
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ConvertString(unescaped, aOutput);
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}
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void
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URLParams::ParseInput(const nsACString& aInput)
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{
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// Remove all the existing data before parsing a new input.
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DeleteAll();
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nsACString::const_iterator start, end;
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aInput.BeginReading(start);
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aInput.EndReading(end);
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nsACString::const_iterator iter(start);
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while (start != end) {
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nsAutoCString string;
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if (FindCharInReadable('&', iter, end)) {
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string.Assign(Substring(start, iter));
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start = ++iter;
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} else {
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string.Assign(Substring(start, end));
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start = end;
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}
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if (string.IsEmpty()) {
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continue;
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}
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nsACString::const_iterator eqStart, eqEnd;
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string.BeginReading(eqStart);
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string.EndReading(eqEnd);
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nsACString::const_iterator eqIter(eqStart);
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nsAutoCString name;
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nsAutoCString value;
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if (FindCharInReadable('=', eqIter, eqEnd)) {
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name.Assign(Substring(eqStart, eqIter));
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++eqIter;
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value.Assign(Substring(eqIter, eqEnd));
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} else {
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name.Assign(string);
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}
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nsAutoString decodedName;
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DecodeString(name, decodedName);
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nsAutoString decodedValue;
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DecodeString(value, decodedValue);
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Append(decodedName, decodedValue);
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}
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}
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namespace {
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void SerializeString(const nsCString& aInput, nsAString& aValue)
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{
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const unsigned char* p = (const unsigned char*) aInput.get();
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const unsigned char* end = p + aInput.Length();
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while (p != end) {
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// ' ' to '+'
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if (*p == 0x20) {
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aValue.Append(0x2B);
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// Percent Encode algorithm
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} else if (*p == 0x2A || *p == 0x2D || *p == 0x2E ||
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(*p >= 0x30 && *p <= 0x39) ||
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(*p >= 0x41 && *p <= 0x5A) || *p == 0x5F ||
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(*p >= 0x61 && *p <= 0x7A)) {
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aValue.Append(*p);
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} else {
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aValue.AppendPrintf("%%%.2X", *p);
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}
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++p;
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}
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}
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} // namespace
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void
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URLParams::Serialize(nsAString& aValue) const
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{
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aValue.Truncate();
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bool first = true;
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for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
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if (first) {
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first = false;
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} else {
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aValue.Append('&');
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}
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SerializeString(NS_ConvertUTF16toUTF8(mParams[i].mKey), aValue);
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aValue.Append('=');
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SerializeString(NS_ConvertUTF16toUTF8(mParams[i].mValue), aValue);
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}
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}
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(URLSearchParams, mParent, mObserver)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(URLSearchParams)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(URLSearchParams)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(URLSearchParams)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsIXHRSendable)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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URLSearchParams::URLSearchParams(nsISupports* aParent,
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URLSearchParamsObserver* aObserver)
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: mParams(new URLParams())
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, mParent(aParent)
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, mObserver(aObserver)
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{
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}
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URLSearchParams::~URLSearchParams()
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{
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DeleteAll();
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}
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JSObject*
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URLSearchParams::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return URLSearchParamsBinding::Wrap(aCx, this, aGivenProto);
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}
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/* static */ already_AddRefed<URLSearchParams>
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URLSearchParams::Constructor(const GlobalObject& aGlobal,
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const USVStringSequenceSequenceOrUSVStringUSVStringRecordOrUSVString& aInit,
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ErrorResult& aRv)
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{
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RefPtr<URLSearchParams> sp =
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new URLSearchParams(aGlobal.GetAsSupports(), nullptr);
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if (aInit.IsUSVString()) {
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NS_ConvertUTF16toUTF8 input(aInit.GetAsUSVString());
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if (StringBeginsWith(input, NS_LITERAL_CSTRING("?"))) {
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sp->ParseInput(Substring(input, 1, input.Length() - 1));
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} else {
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sp->ParseInput(input);
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}
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} else if (aInit.IsUSVStringSequenceSequence()) {
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const Sequence<Sequence<nsString>>& list =
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aInit.GetAsUSVStringSequenceSequence();
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for (uint32_t i = 0; i < list.Length(); ++i) {
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const Sequence<nsString>& item = list[i];
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if (item.Length() != 2) {
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aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
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return nullptr;
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}
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sp->Append(item[0], item[1]);
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}
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} else if (aInit.IsUSVStringUSVStringRecord()) {
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const Record<nsString, nsString>& record =
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aInit.GetAsUSVStringUSVStringRecord();
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for (auto& entry : record.Entries()) {
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sp->Append(entry.mKey, entry.mValue);
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}
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} else {
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MOZ_CRASH("This should not happen.");
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}
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return sp.forget();
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}
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void
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URLSearchParams::ParseInput(const nsACString& aInput)
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{
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mParams->ParseInput(aInput);
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}
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void
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URLSearchParams::Get(const nsAString& aName, nsString& aRetval)
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{
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return mParams->Get(aName, aRetval);
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}
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void
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URLSearchParams::GetAll(const nsAString& aName, nsTArray<nsString>& aRetval)
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{
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return mParams->GetAll(aName, aRetval);
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}
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void
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URLSearchParams::Set(const nsAString& aName, const nsAString& aValue)
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{
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mParams->Set(aName, aValue);
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NotifyObserver();
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}
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void
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URLSearchParams::Append(const nsAString& aName, const nsAString& aValue)
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{
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mParams->Append(aName, aValue);
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NotifyObserver();
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}
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bool
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URLSearchParams::Has(const nsAString& aName)
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{
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return mParams->Has(aName);
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}
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void
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URLSearchParams::Delete(const nsAString& aName)
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{
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if (mParams->Delete(aName)) {
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NotifyObserver();
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}
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}
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void
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URLSearchParams::DeleteAll()
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{
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mParams->DeleteAll();
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}
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void
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URLSearchParams::Serialize(nsAString& aValue) const
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{
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mParams->Serialize(aValue);
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}
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void
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URLSearchParams::NotifyObserver()
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{
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if (mObserver) {
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mObserver->URLSearchParamsUpdated(this);
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}
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}
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uint32_t
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URLSearchParams::GetIterableLength() const
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{
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return mParams->Length();
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}
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const nsAString&
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URLSearchParams::GetKeyAtIndex(uint32_t aIndex) const
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{
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return mParams->GetKeyAtIndex(aIndex);
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}
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const nsAString&
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URLSearchParams::GetValueAtIndex(uint32_t aIndex) const
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{
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return mParams->GetValueAtIndex(aIndex);
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}
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void
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URLSearchParams::Sort(ErrorResult& aRv)
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{
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aRv = mParams->Sort();
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if (!aRv.Failed()) {
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NotifyObserver();
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}
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}
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// Helper functions for structured cloning
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inline bool
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ReadString(JSStructuredCloneReader* aReader, nsString& aString)
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{
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MOZ_ASSERT(aReader);
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bool read;
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uint32_t nameLength, zero;
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read = JS_ReadUint32Pair(aReader, &nameLength, &zero);
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if (!read) {
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return false;
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}
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MOZ_ASSERT(zero == 0);
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aString.SetLength(nameLength);
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size_t charSize = sizeof(nsString::char_type);
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read = JS_ReadBytes(aReader, (void*) aString.BeginWriting(),
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nameLength * charSize);
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if (!read) {
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return false;
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}
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return true;
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}
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nsresult
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URLParams::Sort()
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{
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// Unfortunately we cannot use nsTArray<>.Sort() because it doesn't keep the
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// correct order of the values for equal keys.
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// Let's sort the keys, without duplicates.
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FallibleTArray<nsString> keys;
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for (const Param& param : mParams) {
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if (!keys.Contains(param.mKey) &&
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!keys.InsertElementSorted(param.mKey, fallible)) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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FallibleTArray<Param> params;
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// Here we recreate the array starting from the sorted keys.
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for (uint32_t keyId = 0, keysLength = keys.Length(); keyId < keysLength;
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++keyId) {
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const nsString& key = keys[keyId];
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for (const Param& param : mParams) {
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if (param.mKey.Equals(key) &&
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!params.AppendElement(param, fallible)) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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}
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mParams.SwapElements(params);
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return NS_OK;
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}
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inline bool
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WriteString(JSStructuredCloneWriter* aWriter, const nsString& aString)
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{
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MOZ_ASSERT(aWriter);
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size_t charSize = sizeof(nsString::char_type);
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return JS_WriteUint32Pair(aWriter, aString.Length(), 0) &&
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JS_WriteBytes(aWriter, aString.get(), aString.Length() * charSize);
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}
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bool
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URLParams::WriteStructuredClone(JSStructuredCloneWriter* aWriter) const
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{
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const uint32_t& nParams = mParams.Length();
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if (!JS_WriteUint32Pair(aWriter, nParams, 0)) {
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return false;
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}
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for (uint32_t i = 0; i < nParams; ++i) {
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if (!WriteString(aWriter, mParams[i].mKey) ||
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!WriteString(aWriter, mParams[i].mValue)) {
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return false;
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}
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}
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return true;
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}
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bool
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URLParams::ReadStructuredClone(JSStructuredCloneReader* aReader)
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{
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MOZ_ASSERT(aReader);
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DeleteAll();
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uint32_t nParams, zero;
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nsAutoString key, value;
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if (!JS_ReadUint32Pair(aReader, &nParams, &zero)) {
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return false;
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}
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MOZ_ASSERT(zero == 0);
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for (uint32_t i = 0; i < nParams; ++i) {
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if (!ReadString(aReader, key) || !ReadString(aReader, value)) {
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return false;
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}
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Append(key, value);
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}
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return true;
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}
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bool
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URLSearchParams::WriteStructuredClone(JSStructuredCloneWriter* aWriter) const
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{
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return mParams->WriteStructuredClone(aWriter);
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}
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bool
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URLSearchParams::ReadStructuredClone(JSStructuredCloneReader* aReader)
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{
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return mParams->ReadStructuredClone(aReader);
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}
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NS_IMETHODIMP
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URLSearchParams::GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
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nsACString& aContentTypeWithCharset,
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nsACString& aCharset)
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{
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aContentTypeWithCharset.AssignLiteral("application/x-www-form-urlencoded;charset=UTF-8");
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aCharset.AssignLiteral("UTF-8");
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nsAutoString serialized;
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Serialize(serialized);
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NS_ConvertUTF16toUTF8 converted(serialized);
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*aContentLength = converted.Length();
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return NS_NewCStringInputStream(aBody, converted);
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}
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} // namespace dom
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} // namespace mozilla
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