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commit a58cea744ac5b93b99a66554e1029b2c7aa3255d
Author: Matthew Gregan <kinetik@flim.org>
Date: Tue Nov 11 08:58:52 2014 +1300
Bug 1085175. r=roc, a=dveditz
Modified content/media/MediaCache.cpp
diff --git a/content/media/MediaCache.cpp b/content/media/MediaCache.cpp
index 598d905..c99f724 100644
--- a/content/media/MediaCache.cpp
+++ b/content/media/MediaCache.cpp
@@ -1174,6 +1174,7 @@ MediaCache::Update()
// Figure out where we should be reading from. It's the first
// uncached byte after the current mStreamOffset.
int64_t dataOffset = stream->GetCachedDataEndInternal(stream->mStreamOffset);
+ MOZ_ASSERT(dataOffset >= 0);
// Compute where we'd actually seek to to read at readOffset
int64_t desiredOffset = dataOffset;
@@ -1702,6 +1703,7 @@ MediaCacheStream::NotifyDataStarted(int64_t aOffset)
ReentrantMonitorAutoEnter mon(gMediaCache->GetReentrantMonitor());
NS_WARN_IF_FALSE(aOffset == mChannelOffset,
"Server is giving us unexpected offset");
+ MOZ_ASSERT(aOffset >= 0);
mChannelOffset = aOffset;
if (mStreamLength >= 0) {
// If we started reading at a certain offset, then for sure
@@ -2118,23 +2120,28 @@ MediaCacheStream::Seek(int32_t aWhence, int64_t aOffset)
return NS_ERROR_FAILURE;
int64_t oldOffset = mStreamOffset;
+ int64_t newOffset = mStreamOffset;
switch (aWhence) {
case PR_SEEK_END:
if (mStreamLength < 0)
return NS_ERROR_FAILURE;
- mStreamOffset = mStreamLength + aOffset;
+ newOffset = mStreamLength + aOffset;
break;
case PR_SEEK_CUR:
- mStreamOffset += aOffset;
+ newOffset += aOffset;
break;
case PR_SEEK_SET:
- mStreamOffset = aOffset;
+ newOffset = aOffset;
break;
default:
NS_ERROR("Unknown whence");
return NS_ERROR_FAILURE;
}
+ if (newOffset < 0)
+ return NS_ERROR_FAILURE;
+ mStreamOffset = newOffset;
+
CACHE_LOG(PR_LOG_DEBUG, ("Stream %p Seek to %lld", this, (long long)mStreamOffset));
gMediaCache->NoteSeek(this, oldOffset);
@@ -2176,11 +2183,10 @@ MediaCacheStream::Read(char* aBuffer, uint32_t aCount, uint32_t* aBytes)
break;
}
size = std::min(size, bytesRemaining);
- // Clamp size until 64-bit file size issues (bug 500784) are fixed.
+ // Clamp size until 64-bit file size issues are fixed.
size = std::min(size, int64_t(INT32_MAX));
}
- int32_t bytes;
int32_t cacheBlock = streamBlock < mBlocks.Length() ? mBlocks[streamBlock] : -1;
if (cacheBlock < 0) {
// We don't have a complete cached block here.
@@ -2208,7 +2214,10 @@ MediaCacheStream::Read(char* aBuffer, uint32_t aCount, uint32_t* aBytes)
// We can just use the data in mPartialBlockBuffer. In fact we should
// use it rather than waiting for the block to fill and land in
// the cache.
- bytes = std::min<int64_t>(size, streamWithPartialBlock->mChannelOffset - mStreamOffset);
+ int64_t bytes = std::min<int64_t>(size, streamWithPartialBlock->mChannelOffset - mStreamOffset);
+ // Clamp bytes until 64-bit file size issues are fixed.
+ bytes = std::min(bytes, int64_t(INT32_MAX));
+ NS_ABORT_IF_FALSE(bytes >= 0 && bytes <= aCount, "Bytes out of range.");
memcpy(aBuffer,
reinterpret_cast<char*>(streamWithPartialBlock->mPartialBlockBuffer.get()) + offsetInStreamBlock, bytes);
if (mCurrentMode == MODE_METADATA) {
@@ -2232,6 +2241,7 @@ MediaCacheStream::Read(char* aBuffer, uint32_t aCount, uint32_t* aBytes)
gMediaCache->NoteBlockUsage(this, cacheBlock, mCurrentMode, TimeStamp::Now());
int64_t offset = cacheBlock*BLOCK_SIZE + offsetInStreamBlock;
+ int32_t bytes;
NS_ABORT_IF_FALSE(size >= 0 && size <= INT32_MAX, "Size out of range.");
nsresult rv = gMediaCache->ReadCacheFile(offset, aBuffer + count, int32_t(size), &bytes);
if (NS_FAILED(rv)) {
@@ -2268,9 +2278,7 @@ MediaCacheStream::ReadAt(int64_t aOffset, char* aBuffer,
}
nsresult
-MediaCacheStream::ReadFromCache(char* aBuffer,
- int64_t aOffset,
- int64_t aCount)
+MediaCacheStream::ReadFromCache(char* aBuffer, int64_t aOffset, int64_t aCount)
{
ReentrantMonitorAutoEnter mon(gMediaCache->GetReentrantMonitor());
if (mClosed)
@@ -2292,7 +2300,7 @@ MediaCacheStream::ReadFromCache(char* aBuffer,
return NS_ERROR_FAILURE;
}
size = std::min(size, bytesRemaining);
- // Clamp size until 64-bit file size issues (bug 500784) are fixed.
+ // Clamp size until 64-bit file size issues are fixed.
size = std::min(size, int64_t(INT32_MAX));
}
@@ -2303,7 +2311,10 @@ MediaCacheStream::ReadFromCache(char* aBuffer,
// We can just use the data in mPartialBlockBuffer. In fact we should
// use it rather than waiting for the block to fill and land in
// the cache.
- bytes = std::min<int64_t>(size, mChannelOffset - streamOffset);
+ // Clamp bytes until 64-bit file size issues are fixed.
+ int64_t toCopy = std::min<int64_t>(size, mChannelOffset - streamOffset);
+ bytes = std::min(toCopy, int64_t(INT32_MAX));
+ NS_ABORT_IF_FALSE(bytes >= 0 && bytes <= toCopy, "Bytes out of range.");
memcpy(aBuffer + count,
reinterpret_cast<char*>(mPartialBlockBuffer.get()) + offsetInStreamBlock, bytes);
} else {
Modified media/libnestegg/include/nestegg-stdint.h
diff --git a/media/libnestegg/include/nestegg-stdint.h b/media/libnestegg/include/nestegg-stdint.h
index 599a7a5..c315991 100644
--- a/media/libnestegg/include/nestegg-stdint.h
+++ b/media/libnestegg/include/nestegg-stdint.h
@@ -1,6 +1,9 @@
#ifdef _WIN32
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
+#if !defined(INT64_MAX)
+#define INT64_MAX 9223372036854775807LL
+#endif
#else
#include <stdint.h>
#endif
Modified media/libnestegg/src/nestegg.c
diff --git a/media/libnestegg/src/nestegg.c b/media/libnestegg/src/nestegg.c
index 8813cf2..56884d7 100644
--- a/media/libnestegg/src/nestegg.c
+++ b/media/libnestegg/src/nestegg.c
@@ -1950,6 +1950,9 @@ nestegg_offset_seek(nestegg * ctx, uint64_t offset)
{
int r;
+ if (offset > INT64_MAX)
+ return -1;
+
/* Seek and set up parser state for segment-level element (Cluster). */
r = ne_io_seek(ctx->io, offset, NESTEGG_SEEK_SET);
if (r != 0)
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