1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "BlobURLChannel.h"
8 #include "mozilla/dom/BlobImpl.h"
9 #include "mozilla/dom/BlobURL.h"
10 #include "mozilla/dom/BlobURLInputStream.h"
11
12 using namespace mozilla::dom;
13
BlobURLChannel(nsIURI * aURI,nsILoadInfo * aLoadInfo)14 BlobURLChannel::BlobURLChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo)
15 : mContentStreamOpened(false) {
16 SetURI(aURI);
17 SetOriginalURI(aURI);
18 SetLoadInfo(aLoadInfo);
19
20 // If we're sandboxed, make sure to clear any owner the channel
21 // might already have.
22 if (aLoadInfo && aLoadInfo->GetLoadingSandboxed()) {
23 SetOwner(nullptr);
24 }
25 }
26
27 BlobURLChannel::~BlobURLChannel() = default;
28
OpenContentStream(bool aAsync,nsIInputStream ** aResult,nsIChannel ** aChannel)29 nsresult BlobURLChannel::OpenContentStream(bool aAsync,
30 nsIInputStream** aResult,
31 nsIChannel** aChannel) {
32 if (mContentStreamOpened) {
33 return NS_ERROR_ALREADY_OPENED;
34 }
35
36 mContentStreamOpened = true;
37
38 nsCOMPtr<nsIURI> uri;
39 nsresult rv = GetURI(getter_AddRefs(uri));
40 NS_ENSURE_SUCCESS(rv, NS_ERROR_MALFORMED_URI);
41
42 RefPtr<BlobURL> blobURL;
43 rv = uri->QueryInterface(kHOSTOBJECTURICID, getter_AddRefs(blobURL));
44
45 if (NS_WARN_IF(NS_FAILED(rv)) || NS_WARN_IF(!blobURL)) {
46 return NS_ERROR_MALFORMED_URI;
47 }
48
49 if (blobURL->Revoked()) {
50 #ifdef MOZ_WIDGET_ANDROID
51 nsCOMPtr<nsILoadInfo> loadInfo;
52 GetLoadInfo(getter_AddRefs(loadInfo));
53 // if the channel was not triggered by the system principal,
54 // then we return here because the URL had been revoked
55 if (loadInfo && !loadInfo->TriggeringPrincipal()->IsSystemPrincipal()) {
56 return NS_ERROR_MALFORMED_URI;
57 }
58 #else
59 return NS_ERROR_MALFORMED_URI;
60 #endif
61 }
62
63 nsCOMPtr<nsIInputStream> inputStream =
64 BlobURLInputStream::Create(this, blobURL);
65 if (NS_WARN_IF(!inputStream)) {
66 return NS_ERROR_MALFORMED_URI;
67 }
68
69 EnableSynthesizedProgressEvents(true);
70
71 inputStream.forget(aResult);
72
73 return NS_OK;
74 }
75