The Tor Browser: netwerk/base/src/nsSerializationHelper.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsSerializationHelper.h"

     8 #include "mozilla/Base64.h"

     9 #include "nsISerializable.h"

    10 #include "nsIObjectOutputStream.h"

    11 #include "nsIObjectInputStream.h"

    12 #include "nsString.h"

    13 #include "nsBase64Encoder.h"

    14 #include "nsAutoPtr.h"

    15 #include "nsComponentManagerUtils.h"

    16 #include "nsStringStream.h"

    18 using namespace mozilla;

    20 nsresult

    21 NS_SerializeToString(nsISerializable* obj, nsCSubstring& str)

    22 {

    23   nsRefPtr<nsBase64Encoder> stream(new nsBase64Encoder());

    24   if (!stream)

    25     return NS_ERROR_OUT_OF_MEMORY;

    27   nsCOMPtr<nsIObjectOutputStream> objstream =

    28       do_CreateInstance("@mozilla.org/binaryoutputstream;1");

    29   if (!objstream)

    30     return NS_ERROR_OUT_OF_MEMORY;

    32   objstream->SetOutputStream(stream);

    33   nsresult rv =

    34       objstream->WriteCompoundObject(obj, NS_GET_IID(nsISupports), true);

    35   NS_ENSURE_SUCCESS(rv, rv);

    36   return stream->Finish(str);

    37 }

    39 nsresult

    40 NS_DeserializeObject(const nsCSubstring& str, nsISupports** obj)

    41 {

    42   nsCString decodedData;

    43   nsresult rv = Base64Decode(str, decodedData);

    44   NS_ENSURE_SUCCESS(rv, rv);

    46   nsCOMPtr<nsIInputStream> stream;

    47   rv = NS_NewCStringInputStream(getter_AddRefs(stream), decodedData);

    48   NS_ENSURE_SUCCESS(rv, rv);

    50   nsCOMPtr<nsIObjectInputStream> objstream =

    51       do_CreateInstance("@mozilla.org/binaryinputstream;1");

    52   if (!objstream)

    53     return NS_ERROR_OUT_OF_MEMORY;

    55   objstream->SetInputStream(stream);

    56   return objstream->ReadObject(true, obj);

    57 }

    59 NS_IMPL_ISUPPORTS(nsSerializationHelper, nsISerializationHelper)

    61 NS_IMETHODIMP

    62 nsSerializationHelper::SerializeToString(nsISerializable *serializable,

    63                                          nsACString & _retval)

    64 {

    65   return NS_SerializeToString(serializable, _retval);

    66 }

    68 NS_IMETHODIMP

    69 nsSerializationHelper::DeserializeObject(const nsACString & input,

    70                                          nsISupports **_retval)

    71 {

    72   return NS_DeserializeObject(input, _retval);

    73 }

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