1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/base/src/nsDOMBlobBuilder.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,492 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsDOMBlobBuilder.h"
1.10 +#include "jsfriendapi.h"
1.11 +#include "mozilla/dom/BlobBinding.h"
1.12 +#include "mozilla/dom/FileBinding.h"
1.13 +#include "nsAutoPtr.h"
1.14 +#include "nsDOMClassInfoID.h"
1.15 +#include "nsIMultiplexInputStream.h"
1.16 +#include "nsStringStream.h"
1.17 +#include "nsTArray.h"
1.18 +#include "nsJSUtils.h"
1.19 +#include "nsContentUtils.h"
1.20 +#include "nsIScriptError.h"
1.21 +#include "nsIXPConnect.h"
1.22 +#include <algorithm>
1.23 +
1.24 +using namespace mozilla;
1.25 +using namespace mozilla::dom;
1.26 +
1.27 +NS_IMPL_ISUPPORTS_INHERITED(nsDOMMultipartFile, nsDOMFile,
1.28 + nsIJSNativeInitializer)
1.29 +
1.30 +NS_IMETHODIMP
1.31 +nsDOMMultipartFile::GetSize(uint64_t* aLength)
1.32 +{
1.33 + if (mLength == UINT64_MAX) {
1.34 + CheckedUint64 length = 0;
1.35 +
1.36 + uint32_t i;
1.37 + uint32_t len = mBlobs.Length();
1.38 + for (i = 0; i < len; i++) {
1.39 + nsIDOMBlob* blob = mBlobs.ElementAt(i).get();
1.40 + uint64_t l = 0;
1.41 +
1.42 + nsresult rv = blob->GetSize(&l);
1.43 + NS_ENSURE_SUCCESS(rv, rv);
1.44 +
1.45 + length += l;
1.46 + }
1.47 +
1.48 + NS_ENSURE_TRUE(length.isValid(), NS_ERROR_FAILURE);
1.49 +
1.50 + mLength = length.value();
1.51 + }
1.52 +
1.53 + *aLength = mLength;
1.54 + return NS_OK;
1.55 +}
1.56 +
1.57 +NS_IMETHODIMP
1.58 +nsDOMMultipartFile::GetInternalStream(nsIInputStream** aStream)
1.59 +{
1.60 + nsresult rv;
1.61 + *aStream = nullptr;
1.62 +
1.63 + nsCOMPtr<nsIMultiplexInputStream> stream =
1.64 + do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
1.65 + NS_ENSURE_TRUE(stream, NS_ERROR_FAILURE);
1.66 +
1.67 + uint32_t i;
1.68 + for (i = 0; i < mBlobs.Length(); i++) {
1.69 + nsCOMPtr<nsIInputStream> scratchStream;
1.70 + nsIDOMBlob* blob = mBlobs.ElementAt(i).get();
1.71 +
1.72 + rv = blob->GetInternalStream(getter_AddRefs(scratchStream));
1.73 + NS_ENSURE_SUCCESS(rv, rv);
1.74 +
1.75 + rv = stream->AppendStream(scratchStream);
1.76 + NS_ENSURE_SUCCESS(rv, rv);
1.77 + }
1.78 +
1.79 + return CallQueryInterface(stream, aStream);
1.80 +}
1.81 +
1.82 +already_AddRefed<nsIDOMBlob>
1.83 +nsDOMMultipartFile::CreateSlice(uint64_t aStart, uint64_t aLength,
1.84 + const nsAString& aContentType)
1.85 +{
1.86 + // If we clamped to nothing we create an empty blob
1.87 + nsTArray<nsCOMPtr<nsIDOMBlob> > blobs;
1.88 +
1.89 + uint64_t length = aLength;
1.90 + uint64_t skipStart = aStart;
1.91 +
1.92 + // Prune the list of blobs if we can
1.93 + uint32_t i;
1.94 + for (i = 0; length && skipStart && i < mBlobs.Length(); i++) {
1.95 + nsIDOMBlob* blob = mBlobs[i].get();
1.96 +
1.97 + uint64_t l;
1.98 + nsresult rv = blob->GetSize(&l);
1.99 + NS_ENSURE_SUCCESS(rv, nullptr);
1.100 +
1.101 + if (skipStart < l) {
1.102 + uint64_t upperBound = std::min<uint64_t>(l - skipStart, length);
1.103 +
1.104 + nsCOMPtr<nsIDOMBlob> firstBlob;
1.105 + rv = blob->Slice(skipStart, skipStart + upperBound,
1.106 + aContentType, 3,
1.107 + getter_AddRefs(firstBlob));
1.108 + NS_ENSURE_SUCCESS(rv, nullptr);
1.109 +
1.110 + // Avoid wrapping a single blob inside an nsDOMMultipartFile
1.111 + if (length == upperBound) {
1.112 + return firstBlob.forget();
1.113 + }
1.114 +
1.115 + blobs.AppendElement(firstBlob);
1.116 + length -= upperBound;
1.117 + i++;
1.118 + break;
1.119 + }
1.120 + skipStart -= l;
1.121 + }
1.122 +
1.123 + // Now append enough blobs until we're done
1.124 + for (; length && i < mBlobs.Length(); i++) {
1.125 + nsIDOMBlob* blob = mBlobs[i].get();
1.126 +
1.127 + uint64_t l;
1.128 + nsresult rv = blob->GetSize(&l);
1.129 + NS_ENSURE_SUCCESS(rv, nullptr);
1.130 +
1.131 + if (length < l) {
1.132 + nsCOMPtr<nsIDOMBlob> lastBlob;
1.133 + rv = blob->Slice(0, length, aContentType, 3,
1.134 + getter_AddRefs(lastBlob));
1.135 + NS_ENSURE_SUCCESS(rv, nullptr);
1.136 +
1.137 + blobs.AppendElement(lastBlob);
1.138 + } else {
1.139 + blobs.AppendElement(blob);
1.140 + }
1.141 + length -= std::min<uint64_t>(l, length);
1.142 + }
1.143 +
1.144 + // we can create our blob now
1.145 + nsCOMPtr<nsIDOMBlob> blob = new nsDOMMultipartFile(blobs, aContentType);
1.146 + return blob.forget();
1.147 +}
1.148 +
1.149 +/* static */ nsresult
1.150 +nsDOMMultipartFile::NewFile(const nsAString& aName, nsISupports* *aNewObject)
1.151 +{
1.152 + nsCOMPtr<nsISupports> file =
1.153 + do_QueryObject(new nsDOMMultipartFile(aName));
1.154 + file.forget(aNewObject);
1.155 + return NS_OK;
1.156 +}
1.157 +
1.158 +/* static */ nsresult
1.159 +nsDOMMultipartFile::NewBlob(nsISupports* *aNewObject)
1.160 +{
1.161 + nsCOMPtr<nsISupports> file = do_QueryObject(new nsDOMMultipartFile());
1.162 + file.forget(aNewObject);
1.163 + return NS_OK;
1.164 +}
1.165 +
1.166 +static nsIDOMBlob*
1.167 +GetXPConnectNative(JSContext* aCx, JSObject* aObj) {
1.168 + nsCOMPtr<nsIDOMBlob> blob = do_QueryInterface(
1.169 + nsContentUtils::XPConnect()->GetNativeOfWrapper(aCx, aObj));
1.170 + return blob;
1.171 +}
1.172 +
1.173 +NS_IMETHODIMP
1.174 +nsDOMMultipartFile::Initialize(nsISupports* aOwner,
1.175 + JSContext* aCx,
1.176 + JSObject* aObj,
1.177 + const JS::CallArgs& aArgs)
1.178 +{
1.179 + if (!mIsFile) {
1.180 + return InitBlob(aCx, aArgs.length(), aArgs.array(), GetXPConnectNative);
1.181 + }
1.182 +
1.183 + if (!nsContentUtils::IsCallerChrome()) {
1.184 + return InitFile(aCx, aArgs.length(), aArgs.array());
1.185 + }
1.186 +
1.187 + if (aArgs.length() > 0) {
1.188 + JS::Value* argv = aArgs.array();
1.189 + if (argv[0].isObject()) {
1.190 + JS::Rooted<JSObject*> obj(aCx, &argv[0].toObject());
1.191 + if (JS_IsArrayObject(aCx, obj)) {
1.192 + return InitFile(aCx, aArgs.length(), aArgs.array());
1.193 + }
1.194 + }
1.195 + }
1.196 +
1.197 + return InitChromeFile(aCx, aArgs.length(), aArgs.array());
1.198 +}
1.199 +
1.200 +nsresult
1.201 +nsDOMMultipartFile::InitBlob(JSContext* aCx,
1.202 + uint32_t aArgc,
1.203 + JS::Value* aArgv,
1.204 + UnwrapFuncPtr aUnwrapFunc)
1.205 +{
1.206 + bool nativeEOL = false;
1.207 + if (aArgc > 1) {
1.208 + BlobPropertyBag d;
1.209 + if (!d.Init(aCx, JS::Handle<JS::Value>::fromMarkedLocation(&aArgv[1]))) {
1.210 + return NS_ERROR_TYPE_ERR;
1.211 + }
1.212 + mContentType = d.mType;
1.213 + nativeEOL = d.mEndings == EndingTypes::Native;
1.214 + }
1.215 +
1.216 + if (aArgc > 0) {
1.217 + return ParseBlobArrayArgument(aCx, aArgv[0], nativeEOL, aUnwrapFunc);
1.218 + }
1.219 +
1.220 + return NS_OK;
1.221 +}
1.222 +
1.223 +nsresult
1.224 +nsDOMMultipartFile::ParseBlobArrayArgument(JSContext* aCx, JS::Value& aValue,
1.225 + bool aNativeEOL,
1.226 + UnwrapFuncPtr aUnwrapFunc)
1.227 +{
1.228 + if (!aValue.isObject()) {
1.229 + return NS_ERROR_TYPE_ERR; // We're not interested
1.230 + }
1.231 +
1.232 + JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
1.233 + if (!JS_IsArrayObject(aCx, obj)) {
1.234 + return NS_ERROR_TYPE_ERR; // We're not interested
1.235 + }
1.236 +
1.237 + BlobSet blobSet;
1.238 +
1.239 + uint32_t length;
1.240 + MOZ_ALWAYS_TRUE(JS_GetArrayLength(aCx, obj, &length));
1.241 + for (uint32_t i = 0; i < length; ++i) {
1.242 + JS::Rooted<JS::Value> element(aCx);
1.243 + if (!JS_GetElement(aCx, obj, i, &element))
1.244 + return NS_ERROR_TYPE_ERR;
1.245 +
1.246 + if (element.isObject()) {
1.247 + JS::Rooted<JSObject*> obj(aCx, &element.toObject());
1.248 + nsCOMPtr<nsIDOMBlob> blob = aUnwrapFunc(aCx, obj);
1.249 + if (blob) {
1.250 + // Flatten so that multipart blobs will never nest
1.251 + nsDOMFileBase* file = static_cast<nsDOMFileBase*>(
1.252 + static_cast<nsIDOMBlob*>(blob));
1.253 + const nsTArray<nsCOMPtr<nsIDOMBlob> >*
1.254 + subBlobs = file->GetSubBlobs();
1.255 + if (subBlobs) {
1.256 + blobSet.AppendBlobs(*subBlobs);
1.257 + } else {
1.258 + blobSet.AppendBlob(blob);
1.259 + }
1.260 + continue;
1.261 + }
1.262 + if (JS_IsArrayBufferViewObject(obj)) {
1.263 + nsresult rv = blobSet.AppendVoidPtr(
1.264 + JS_GetArrayBufferViewData(obj),
1.265 + JS_GetArrayBufferViewByteLength(obj));
1.266 + NS_ENSURE_SUCCESS(rv, rv);
1.267 + continue;
1.268 + }
1.269 + if (JS_IsArrayBufferObject(obj)) {
1.270 + nsresult rv = blobSet.AppendArrayBuffer(obj);
1.271 + NS_ENSURE_SUCCESS(rv, rv);
1.272 + continue;
1.273 + }
1.274 + }
1.275 +
1.276 + // coerce it to a string
1.277 + JSString* str = JS::ToString(aCx, element);
1.278 + NS_ENSURE_TRUE(str, NS_ERROR_TYPE_ERR);
1.279 +
1.280 + nsresult rv = blobSet.AppendString(str, aNativeEOL, aCx);
1.281 + NS_ENSURE_SUCCESS(rv, rv);
1.282 + }
1.283 +
1.284 + mBlobs = blobSet.GetBlobs();
1.285 + return NS_OK;
1.286 +}
1.287 +
1.288 +NS_IMETHODIMP
1.289 +nsDOMMultipartFile::GetMozFullPathInternal(nsAString &aFilename)
1.290 +{
1.291 + if (!mIsFromNsiFile || mBlobs.Length() == 0) {
1.292 + return nsDOMFile::GetMozFullPathInternal(aFilename);
1.293 + }
1.294 +
1.295 + nsIDOMBlob* blob = mBlobs.ElementAt(0).get();
1.296 + nsDOMFileFile* file = static_cast<nsDOMFileFile*>(blob);
1.297 + if (!file) {
1.298 + return nsDOMFile::GetMozFullPathInternal(aFilename);
1.299 + }
1.300 +
1.301 + return file->GetMozFullPathInternal(aFilename);
1.302 +}
1.303 +
1.304 +nsresult
1.305 +nsDOMMultipartFile::InitChromeFile(JSContext* aCx,
1.306 + uint32_t aArgc,
1.307 + JS::Value* aArgv)
1.308 +{
1.309 + nsresult rv;
1.310 +
1.311 + NS_ASSERTION(!mImmutable, "Something went wrong ...");
1.312 + NS_ENSURE_TRUE(!mImmutable, NS_ERROR_UNEXPECTED);
1.313 + MOZ_ASSERT(nsContentUtils::IsCallerChrome());
1.314 + NS_ENSURE_TRUE(aArgc > 0, NS_ERROR_UNEXPECTED);
1.315 +
1.316 + if (aArgc > 1) {
1.317 + FilePropertyBag d;
1.318 + if (!d.Init(aCx, JS::Handle<JS::Value>::fromMarkedLocation(&aArgv[1]))) {
1.319 + return NS_ERROR_TYPE_ERR;
1.320 + }
1.321 + mName = d.mName;
1.322 + mContentType = d.mType;
1.323 + }
1.324 +
1.325 +
1.326 + // We expect to get a path to represent as a File object or
1.327 + // Blob object, an nsIFile, or an nsIDOMFile.
1.328 + nsCOMPtr<nsIFile> file;
1.329 + nsCOMPtr<nsIDOMBlob> blob;
1.330 + if (!aArgv[0].isString()) {
1.331 + // Lets see if it's an nsIFile
1.332 + if (!aArgv[0].isObject()) {
1.333 + return NS_ERROR_UNEXPECTED; // We're not interested
1.334 + }
1.335 +
1.336 + JSObject* obj = &aArgv[0].toObject();
1.337 +
1.338 + nsISupports* supports =
1.339 + nsContentUtils::XPConnect()->GetNativeOfWrapper(aCx, obj);
1.340 + if (!supports) {
1.341 + return NS_ERROR_UNEXPECTED;
1.342 + }
1.343 +
1.344 + blob = do_QueryInterface(supports);
1.345 + file = do_QueryInterface(supports);
1.346 + if (!blob && !file) {
1.347 + return NS_ERROR_UNEXPECTED;
1.348 + }
1.349 +
1.350 + mIsFromNsiFile = true;
1.351 + } else {
1.352 + // It's a string
1.353 + JSString* str = JS::ToString(aCx, JS::Handle<JS::Value>::fromMarkedLocation(&aArgv[0]));
1.354 + NS_ENSURE_TRUE(str, NS_ERROR_XPC_BAD_CONVERT_JS);
1.355 +
1.356 + nsDependentJSString xpcomStr;
1.357 + if (!xpcomStr.init(aCx, str)) {
1.358 + return NS_ERROR_XPC_BAD_CONVERT_JS;
1.359 + }
1.360 +
1.361 + rv = NS_NewLocalFile(xpcomStr, false, getter_AddRefs(file));
1.362 + NS_ENSURE_SUCCESS(rv, rv);
1.363 + }
1.364 +
1.365 + if (file) {
1.366 + bool exists;
1.367 + rv = file->Exists(&exists);
1.368 + NS_ENSURE_SUCCESS(rv, rv);
1.369 + NS_ENSURE_TRUE(exists, NS_ERROR_FILE_NOT_FOUND);
1.370 +
1.371 + bool isDir;
1.372 + rv = file->IsDirectory(&isDir);
1.373 + NS_ENSURE_SUCCESS(rv, rv);
1.374 + NS_ENSURE_FALSE(isDir, NS_ERROR_FILE_IS_DIRECTORY);
1.375 +
1.376 + if (mName.IsEmpty()) {
1.377 + file->GetLeafName(mName);
1.378 + }
1.379 +
1.380 + blob = new nsDOMFileFile(file);
1.381 + }
1.382 +
1.383 + // XXXkhuey this is terrible
1.384 + if (mContentType.IsEmpty()) {
1.385 + blob->GetType(mContentType);
1.386 + }
1.387 +
1.388 + BlobSet blobSet;
1.389 + blobSet.AppendBlob(blob);
1.390 + mBlobs = blobSet.GetBlobs();
1.391 +
1.392 + return NS_OK;
1.393 +}
1.394 +
1.395 +nsresult
1.396 +nsDOMMultipartFile::InitFile(JSContext* aCx,
1.397 + uint32_t aArgc,
1.398 + JS::Value* aArgv)
1.399 +{
1.400 + NS_ASSERTION(!mImmutable, "Something went wrong ...");
1.401 + NS_ENSURE_TRUE(!mImmutable, NS_ERROR_UNEXPECTED);
1.402 +
1.403 + if (aArgc < 2) {
1.404 + return NS_ERROR_TYPE_ERR;
1.405 + }
1.406 +
1.407 + // File name
1.408 + JSString* str = JS::ToString(aCx, JS::Handle<JS::Value>::fromMarkedLocation(&aArgv[1]));
1.409 + NS_ENSURE_TRUE(str, NS_ERROR_XPC_BAD_CONVERT_JS);
1.410 +
1.411 + nsDependentJSString xpcomStr;
1.412 + if (!xpcomStr.init(aCx, str)) {
1.413 + return NS_ERROR_XPC_BAD_CONVERT_JS;
1.414 + }
1.415 +
1.416 + mName = xpcomStr;
1.417 +
1.418 + // Optional params
1.419 + bool nativeEOL = false;
1.420 + if (aArgc > 2) {
1.421 + BlobPropertyBag d;
1.422 + if (!d.Init(aCx, JS::Handle<JS::Value>::fromMarkedLocation(&aArgv[2]))) {
1.423 + return NS_ERROR_TYPE_ERR;
1.424 + }
1.425 + mContentType = d.mType;
1.426 + nativeEOL = d.mEndings == EndingTypes::Native;
1.427 + }
1.428 +
1.429 + return ParseBlobArrayArgument(aCx, aArgv[0], nativeEOL, GetXPConnectNative);
1.430 +}
1.431 +
1.432 +nsresult
1.433 +BlobSet::AppendVoidPtr(const void* aData, uint32_t aLength)
1.434 +{
1.435 + NS_ENSURE_ARG_POINTER(aData);
1.436 +
1.437 + uint64_t offset = mDataLen;
1.438 +
1.439 + if (!ExpandBufferSize(aLength))
1.440 + return NS_ERROR_OUT_OF_MEMORY;
1.441 +
1.442 + memcpy((char*)mData + offset, aData, aLength);
1.443 + return NS_OK;
1.444 +}
1.445 +
1.446 +nsresult
1.447 +BlobSet::AppendString(JSString* aString, bool nativeEOL, JSContext* aCx)
1.448 +{
1.449 + nsDependentJSString xpcomStr;
1.450 + if (!xpcomStr.init(aCx, aString)) {
1.451 + return NS_ERROR_XPC_BAD_CONVERT_JS;
1.452 + }
1.453 +
1.454 + nsCString utf8Str = NS_ConvertUTF16toUTF8(xpcomStr);
1.455 +
1.456 + if (nativeEOL) {
1.457 + if (utf8Str.FindChar('\r') != kNotFound) {
1.458 + utf8Str.ReplaceSubstring("\r\n", "\n");
1.459 + utf8Str.ReplaceSubstring("\r", "\n");
1.460 + }
1.461 +#ifdef XP_WIN
1.462 + utf8Str.ReplaceSubstring("\n", "\r\n");
1.463 +#endif
1.464 + }
1.465 +
1.466 + return AppendVoidPtr((void*)utf8Str.Data(),
1.467 + utf8Str.Length());
1.468 +}
1.469 +
1.470 +nsresult
1.471 +BlobSet::AppendBlob(nsIDOMBlob* aBlob)
1.472 +{
1.473 + NS_ENSURE_ARG_POINTER(aBlob);
1.474 +
1.475 + Flush();
1.476 + mBlobs.AppendElement(aBlob);
1.477 +
1.478 + return NS_OK;
1.479 +}
1.480 +
1.481 +nsresult
1.482 +BlobSet::AppendBlobs(const nsTArray<nsCOMPtr<nsIDOMBlob> >& aBlob)
1.483 +{
1.484 + Flush();
1.485 + mBlobs.AppendElements(aBlob);
1.486 +
1.487 + return NS_OK;
1.488 +}
1.489 +
1.490 +nsresult
1.491 +BlobSet::AppendArrayBuffer(JSObject* aBuffer)
1.492 +{
1.493 + return AppendVoidPtr(JS_GetArrayBufferData(aBuffer),
1.494 + JS_GetArrayBufferByteLength(aBuffer));
1.495 +}
