mirror of
https://github.com/zebrajr/node.git
synced 2026-01-15 12:15:26 +00:00
5005c3c72c
Change the type of `Buffer::kMaxLength` to size_t because upcoming changes in V8 will allow typed arrays > 2 GB on 64 bits platforms. Not all platforms handle file reads and writes > 2 GB though so keep enforcing the 2 GB typed array limit for I/O operations. Fixes: https://github.com/nodejs/node/issues/31399 Refs: https://github.com/libuv/libuv/pull/1501 PR-URL: https://github.com/nodejs/node/pull/31406 Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: David Carlier <devnexen@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Shelley Vohr <codebytere@gmail.com>
93 lines
3.6 KiB
C++
93 lines
3.6 KiB
C++
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
#ifndef SRC_NODE_BUFFER_H_
|
|
#define SRC_NODE_BUFFER_H_
|
|
|
|
#include "node.h"
|
|
#include "v8.h"
|
|
|
|
namespace node {
|
|
|
|
namespace Buffer {
|
|
|
|
static const size_t kMaxLength = v8::TypedArray::kMaxLength;
|
|
|
|
typedef void (*FreeCallback)(char* data, void* hint);
|
|
|
|
NODE_EXTERN bool HasInstance(v8::Local<v8::Value> val);
|
|
NODE_EXTERN bool HasInstance(v8::Local<v8::Object> val);
|
|
NODE_EXTERN char* Data(v8::Local<v8::Value> val);
|
|
NODE_EXTERN char* Data(v8::Local<v8::Object> val);
|
|
NODE_EXTERN size_t Length(v8::Local<v8::Value> val);
|
|
NODE_EXTERN size_t Length(v8::Local<v8::Object> val);
|
|
|
|
// public constructor - data is copied
|
|
NODE_EXTERN v8::MaybeLocal<v8::Object> Copy(v8::Isolate* isolate,
|
|
const char* data,
|
|
size_t len);
|
|
|
|
// public constructor
|
|
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate, size_t length);
|
|
|
|
// public constructor from string
|
|
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
|
|
v8::Local<v8::String> string,
|
|
enum encoding enc = UTF8);
|
|
|
|
// public constructor - data is used, callback is passed data on object gc
|
|
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
|
|
char* data,
|
|
size_t length,
|
|
FreeCallback callback,
|
|
void* hint);
|
|
|
|
// public constructor - data is used.
|
|
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
|
|
char* data,
|
|
size_t len);
|
|
|
|
// Creates a Buffer instance over an existing ArrayBuffer.
|
|
NODE_EXTERN v8::MaybeLocal<v8::Uint8Array> New(v8::Isolate* isolate,
|
|
v8::Local<v8::ArrayBuffer> ab,
|
|
size_t byte_offset,
|
|
size_t length);
|
|
|
|
// This is verbose to be explicit with inline commenting
|
|
static inline bool IsWithinBounds(size_t off, size_t len, size_t max) {
|
|
// Asking to seek too far into the buffer
|
|
// check to avoid wrapping in subsequent subtraction
|
|
if (off > max)
|
|
return false;
|
|
|
|
// Asking for more than is left over in the buffer
|
|
if (max - off < len)
|
|
return false;
|
|
|
|
// Otherwise we're in bounds
|
|
return true;
|
|
}
|
|
|
|
} // namespace Buffer
|
|
} // namespace node
|
|
|
|
#endif // SRC_NODE_BUFFER_H_
|