The Tor Browser: intl/uconv/src/nsCharsetConverterManager.cpp@129ffea94266 (annotated)

intl/uconv/src/nsCharsetConverterManager.cpp@129ffea94266 (annotated)

intl/uconv/src/nsCharsetConverterManager.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "nsCOMPtr.h"
 #include "nsString.h"
 #include "nsUnicharUtils.h"
 #include "nsCharsetAlias.h"
 #include "nsICategoryManager.h"
 #include "nsICharsetConverterManager.h"
 #include "nsEncoderDecoderUtils.h"
 #include "nsIStringBundle.h"
 #include "nsTArray.h"
 #include "nsStringEnumerator.h"
 #include "mozilla/Services.h"
 #include "nsComponentManagerUtils.h"
 #include "nsISupportsPrimitives.h"
 #include "nsServiceManagerUtils.h"
 // just for CONTRACTIDs
 #include "nsCharsetConverterManager.h"
 static nsIStringBundle * sDataBundle;
 static nsIStringBundle * sTitleBundle;
 // Class nsCharsetConverterManager [implementation]
 NS_IMPL_ISUPPORTS(nsCharsetConverterManager, nsICharsetConverterManager)
 nsCharsetConverterManager::nsCharsetConverterManager()
 {
 }
 nsCharsetConverterManager::~nsCharsetConverterManager()
 {
 }
 //static
 void nsCharsetConverterManager::Shutdown()
 {
   NS_IF_RELEASE(sDataBundle);
   NS_IF_RELEASE(sTitleBundle);
 }
 static
 nsresult LoadExtensibleBundle(const char* aCategory,
                               nsIStringBundle ** aResult)
 {
   nsCOMPtr<nsIStringBundleService> sbServ =
     mozilla::services::GetStringBundleService();
   if (!sbServ)
     return NS_ERROR_FAILURE;
   return sbServ->CreateExtensibleBundle(aCategory, aResult);
 }
 static
 nsresult GetBundleValue(nsIStringBundle * aBundle,
                         const char * aName,
                         const nsAFlatString& aProp,
                         char16_t ** aResult)
 {
   nsAutoString key;
   key.AssignWithConversion(aName);
   ToLowerCase(key); // we lowercase the main comparison key
   key.Append(aProp);
   return aBundle->GetStringFromName(key.get(), aResult);
 }
 static
 nsresult GetBundleValue(nsIStringBundle * aBundle,
                         const char * aName,
                         const nsAFlatString& aProp,
                         nsAString& aResult)
 {
   nsresult rv = NS_OK;
   nsXPIDLString value;
   rv = GetBundleValue(aBundle, aName, aProp, getter_Copies(value));
   if (NS_FAILED(rv))
     return rv;
   aResult = value;
   return NS_OK;
 }
 static
 nsresult GetCharsetDataImpl(const char * aCharset, const char16_t * aProp,
                             nsAString& aResult)
 {
   NS_ENSURE_ARG_POINTER(aCharset);
   // aProp can be nullptr
   if (!sDataBundle) {
     nsresult rv = LoadExtensibleBundle(NS_DATA_BUNDLE_CATEGORY, &sDataBundle);
     if (NS_FAILED(rv))
       return rv;
   }
   return GetBundleValue(sDataBundle, aCharset, nsDependentString(aProp), aResult);
 }
 //static
 bool nsCharsetConverterManager::IsInternal(const nsACString& aCharset)
 {
   nsAutoString str;
   // fully qualify to possibly avoid vtable call
   nsresult rv = GetCharsetDataImpl(PromiseFlatCString(aCharset).get(),
                                    MOZ_UTF16(".isInternal"),
                                    str);
   return NS_SUCCEEDED(rv);
 }
 //----------------------------------------------------------------------------//----------------------------------------------------------------------------
 // Interface nsICharsetConverterManager [implementation]
 NS_IMETHODIMP
 nsCharsetConverterManager::GetUnicodeEncoder(const char * aDest,
                                              nsIUnicodeEncoder ** aResult)
 {
   // resolve the charset first
   nsAutoCString charset;
   // fully qualify to possibly avoid vtable call
   nsCharsetConverterManager::GetCharsetAlias(aDest, charset);
   return nsCharsetConverterManager::GetUnicodeEncoderRaw(charset.get(),
                                                          aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetUnicodeEncoderRaw(const char * aDest,
                                                 nsIUnicodeEncoder ** aResult)
 {
   *aResult= nullptr;
   nsCOMPtr<nsIUnicodeEncoder> encoder;
   nsresult rv = NS_OK;
   nsAutoCString
     contractid(NS_LITERAL_CSTRING(NS_UNICODEENCODER_CONTRACTID_BASE) +
                nsDependentCString(aDest));
   // Always create an instance since encoders hold state.
   encoder = do_CreateInstance(contractid.get(), &rv);
   if (NS_FAILED(rv))
     rv = NS_ERROR_UCONV_NOCONV;
   else
   {
     *aResult = encoder.get();
     NS_ADDREF(*aResult);
   }
   return rv;
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetUnicodeDecoder(const char * aSrc,
                                              nsIUnicodeDecoder ** aResult)
 {
   // resolve the charset first
   nsAutoCString charset;
   // fully qualify to possibly avoid vtable call
   if (NS_FAILED(nsCharsetConverterManager::GetCharsetAlias(aSrc, charset)))
     return NS_ERROR_UCONV_NOCONV;
   return nsCharsetConverterManager::GetUnicodeDecoderRaw(charset.get(),
                                                          aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetUnicodeDecoderInternal(const char * aSrc,
                                                      nsIUnicodeDecoder ** aResult)
 {
   // resolve the charset first
   nsAutoCString charset;
   nsresult rv = nsCharsetAlias::GetPreferredInternal(nsDependentCString(aSrc),
                                                      charset);
   NS_ENSURE_SUCCESS(rv, rv);
   return nsCharsetConverterManager::GetUnicodeDecoderRaw(charset.get(),
                                                          aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetUnicodeDecoderRaw(const char * aSrc,
                                                 nsIUnicodeDecoder ** aResult)
 {
   *aResult= nullptr;
   nsCOMPtr<nsIUnicodeDecoder> decoder;
   nsresult rv = NS_OK;
   NS_NAMED_LITERAL_CSTRING(contractbase, NS_UNICODEDECODER_CONTRACTID_BASE);
   nsDependentCString src(aSrc);
   decoder = do_CreateInstance(PromiseFlatCString(contractbase + src).get(),
                               &rv);
   NS_ENSURE_SUCCESS(rv, NS_ERROR_UCONV_NOCONV);
   decoder.forget(aResult);
   return rv;
 }
 static
 nsresult GetList(const nsACString& aCategory,
                  const nsACString& aPrefix,
                  nsIUTF8StringEnumerator** aResult)
 {
   NS_ENSURE_ARG_POINTER(aResult);
   *aResult = nullptr;
   nsresult rv;
   nsCOMPtr<nsICategoryManager> catman = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
   if (NS_FAILED(rv))
     return rv;
   nsTArray<nsCString>* array = new nsTArray<nsCString>;
   if (!array)
     return NS_ERROR_OUT_OF_MEMORY;
   nsCOMPtr<nsISimpleEnumerator> enumerator;
   catman->EnumerateCategory(PromiseFlatCString(aCategory).get(),
                             getter_AddRefs(enumerator));
   bool hasMore;
   while (NS_SUCCEEDED(enumerator->HasMoreElements(&hasMore)) && hasMore) {
     nsCOMPtr<nsISupports> supports;
     if (NS_FAILED(enumerator->GetNext(getter_AddRefs(supports))))
       continue;
     nsCOMPtr<nsISupportsCString> supStr = do_QueryInterface(supports);
     if (!supStr)
       continue;
     nsAutoCString name;
     if (NS_FAILED(supStr->GetData(name)))
       continue;
     nsAutoCString fullName(aPrefix);
     fullName.Append(name);
     NS_ENSURE_TRUE(array->AppendElement(fullName), NS_ERROR_OUT_OF_MEMORY);
   }
   return NS_NewAdoptingUTF8StringEnumerator(aResult, array);
 }
 // we should change the interface so that we can just pass back a enumerator!
 NS_IMETHODIMP
 nsCharsetConverterManager::GetDecoderList(nsIUTF8StringEnumerator ** aResult)
 {
   return GetList(NS_LITERAL_CSTRING(NS_UNICODEDECODER_NAME),
                  EmptyCString(), aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetEncoderList(nsIUTF8StringEnumerator ** aResult)
 {
   return GetList(NS_LITERAL_CSTRING(NS_UNICODEENCODER_NAME),
                  EmptyCString(), aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetDetectorList(nsIUTF8StringEnumerator** aResult)
 {
   return GetList(NS_LITERAL_CSTRING("charset-detectors"),
                  NS_LITERAL_CSTRING("chardet."), aResult);
 }
 // XXX Improve the implementation of this method. Right now, it is build on
 // top of the nsCharsetAlias service. We can make the nsCharsetAlias
 // better, with its own hash table (not the StringBundle anymore) and
 // a nicer file format.
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetAlias(const char * aCharset,
                                            nsACString& aResult)
 {
   NS_ENSURE_ARG_POINTER(aCharset);
   // We try to obtain the preferred name for this charset from the charset
   // aliases.
   nsresult rv;
   rv = nsCharsetAlias::GetPreferred(nsDependentCString(aCharset), aResult);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetTitle(const char * aCharset,
                                            nsAString& aResult)
 {
   NS_ENSURE_ARG_POINTER(aCharset);
   if (!sTitleBundle) {
     nsresult rv = LoadExtensibleBundle(NS_TITLE_BUNDLE_CATEGORY, &sTitleBundle);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   return GetBundleValue(sTitleBundle, aCharset, NS_LITERAL_STRING(".title"), aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetData(const char * aCharset,
                                           const char16_t * aProp,
                                           nsAString& aResult)
 {
   return GetCharsetDataImpl(aCharset, aProp, aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetLangGroup(const char * aCharset,
                                                nsIAtom** aResult)
 {
   // resolve the charset first
   nsAutoCString charset;
   nsresult rv = GetCharsetAlias(aCharset, charset);
   NS_ENSURE_SUCCESS(rv, rv);
   // fully qualify to possibly avoid vtable call
   return nsCharsetConverterManager::GetCharsetLangGroupRaw(charset.get(),
                                                            aResult);
 }
 NS_IMETHODIMP
 nsCharsetConverterManager::GetCharsetLangGroupRaw(const char * aCharset,
                                                   nsIAtom** aResult)
 {
   *aResult = nullptr;
   nsAutoString langGroup;
   // fully qualify to possibly avoid vtable call
   nsresult rv = nsCharsetConverterManager::GetCharsetData(
       aCharset, MOZ_UTF16(".LangGroup"), langGroup);
   if (NS_SUCCEEDED(rv)) {
     ToLowerCase(langGroup); // use lowercase for all language atoms
     *aResult = NS_NewAtom(langGroup).take();
   }
   return rv;
 }

The Tor Browser / annotate

intl/uconv/src/nsCharsetConverterManager.cpp@129ffea94266 (annotated)

intl/uconv/src/nsCharsetConverterManager.cpp