Gecko [ oric.aiou.edu.pk ]

Name	Size	Permission
aliased_buffer.h	6.42 KB	-rw-r--r--
async_wrap-inl.h	3.33 KB	-rw-r--r--
async_wrap.h	9.16 KB	-rw-r--r--
base64.h	5.82 KB	-rw-r--r--
base_object-inl.h	4.02 KB	-rw-r--r--
base_object.h	4.43 KB	-rw-r--r--
connect_wrap.h	617 B	-rw-r--r--
connection_wrap.h	699 B	-rw-r--r--
debug_utils.h	4.29 KB	-rw-r--r--
env-inl.h	30.64 KB	-rw-r--r--
env.h	46.48 KB	-rw-r--r--
handle_wrap.h	3.91 KB	-rw-r--r--
inspector_agent.h	4.13 KB	-rw-r--r--
inspector_io.h	2.63 KB	-rw-r--r--
inspector_socket.h	1.46 KB	-rw-r--r--
inspector_socket_server.h	3.21 KB	-rw-r--r--
js_stream.h	1.58 KB	-rw-r--r--
memory_tracker-inl.h	10.83 KB	-rw-r--r--
memory_tracker.h	9.96 KB	-rw-r--r--
module_wrap.h	3.07 KB	-rw-r--r--
node.h	35.16 KB	-rw-r--r--
node_api.h	35.44 KB	-rw-r--r--
node_api_types.h	4.16 KB	-rw-r--r--
node_buffer.h	3.4 KB	-rw-r--r--
node_code_cache.h	432 B	-rw-r--r--
node_constants.h	3.11 KB	-rw-r--r--
node_context_data.h	1.14 KB	-rw-r--r--
node_contextify.h	4.81 KB	-rw-r--r--
node_counters.h	2.37 KB	-rw-r--r--
node_crypto.h	23.92 KB	-rw-r--r--
node_crypto_bio.h	5.44 KB	-rw-r--r--
node_crypto_clienthello-inl.h	2.62 KB	-rw-r--r--
node_crypto_clienthello.h	4 KB	-rw-r--r--
node_crypto_groups.h	23.12 KB	-rw-r--r--
node_dtrace.h	2.91 KB	-rw-r--r--
node_errors.h	6.06 KB	-rw-r--r--
node_file.h	10.16 KB	-rw-r--r--
node_http2.h	47.76 KB	-rw-r--r--
node_http2_state.h	4.72 KB	-rw-r--r--
node_i18n.h	2.4 KB	-rw-r--r--
node_internals.h	28.47 KB	-rw-r--r--
node_javascript.h	1.72 KB	-rw-r--r--
node_messaging.h	8.38 KB	-rw-r--r--
node_mutex.h	4.42 KB	-rw-r--r--
node_object_wrap.h	3.7 KB	-rw-r--r--
node_options-inl.h	14.78 KB	-rw-r--r--
node_options.h	12.25 KB	-rw-r--r--
node_perf.h	3.64 KB	-rw-r--r--
node_perf_common.h	3 KB	-rw-r--r--
node_persistent.h	936 B	-rw-r--r--
node_platform.h	5.14 KB	-rw-r--r--
node_revert.h	2.21 KB	-rw-r--r--
node_root_certs.h	223.29 KB	-rw-r--r--
node_stat_watcher.h	2.15 KB	-rw-r--r--
node_url.h	6.16 KB	-rw-r--r--
node_version.h	3.79 KB	-rw-r--r--
node_watchdog.h	3.03 KB	-rw-r--r--
node_win32_etw_provider-inl.h	11.67 KB	-rw-r--r--
node_win32_etw_provider.h	3.67 KB	-rw-r--r--
node_win32_perfctr_provider.h	2.14 KB	-rw-r--r--
node_worker.h	2.88 KB	-rw-r--r--
pipe_wrap.h	2.62 KB	-rw-r--r--
req_wrap-inl.h	5.44 KB	-rw-r--r--
req_wrap.h	1.87 KB	-rw-r--r--
sharedarraybuffer_metadata.h	2.34 KB	-rw-r--r--
spawn_sync.h	6.82 KB	-rw-r--r--
stream_base-inl.h	14.08 KB	-rw-r--r--
stream_base.h	13.46 KB	-rw-r--r--
stream_pipe.h	2 KB	-rw-r--r--
stream_wrap.h	4.03 KB	-rw-r--r--
string_bytes.h	5.14 KB	-rw-r--r--
string_decoder-inl.h	876 B	-rw-r--r--
string_decoder.h	1.5 KB	-rw-r--r--
string_search.h	20.53 KB	-rw-r--r--
tcp_wrap.h	3.59 KB	-rw-r--r--
tls_wrap.h	6.61 KB	-rw-r--r--
tty_wrap.h	2.22 KB	-rw-r--r--
udp_wrap.h	4.12 KB	-rw-r--r--
util-inl.h	14.06 KB	-rw-r--r--
util.h	15.9 KB	-rw-r--r--
v8abbr.h	5.03 KB	-rw-r--r--

Code Editor : node_crypto_bio.h

// 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_CRYPTO_BIO_H_
#define SRC_NODE_CRYPTO_BIO_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "node_crypto.h"
#include "openssl/bio.h"
#include "env-inl.h"
#include "util-inl.h"
#include "v8.h"

namespace node {
namespace crypto {

// This class represents buffers for OpenSSL I/O, implemented as a singly-linked
// list of chunks. It can be used either for writing data from Node to OpenSSL,
// or for reading data back, but not both.
// The structure is only accessed, and owned by, the OpenSSL BIOPointer
// (a.k.a. std::unique_ptr<BIO>).
class NodeBIO : public MemoryRetainer {
 public:
  ~NodeBIO();

static BIOPointer New(Environment* env = nullptr);

// NewFixed takes a copy of `len` bytes from `data` and returns a BIO that,
  // when read from, returns those bytes followed by EOF.
  static BIOPointer NewFixed(const char* data, size_t len,
                             Environment* env = nullptr);

// Move read head to next buffer if needed
  void TryMoveReadHead();

// Allocate new buffer for write if needed
  void TryAllocateForWrite(size_t hint);

// Read `len` bytes maximum into `out`, return actual number of read bytes
  size_t Read(char* out, size_t size);

// Memory optimization:
  // Deallocate children of write head's child if they're empty
  void FreeEmpty();

// Return pointer to internal data and amount of
  // contiguous data available to read
  char* Peek(size_t* size);

// Return pointers and sizes of multiple internal data chunks available for
  // reading
  size_t PeekMultiple(char** out, size_t* size, size_t* count);

// Find first appearance of `delim` in buffer or `limit` if `delim`
  // wasn't found.
  size_t IndexOf(char delim, size_t limit);

// Discard all available data
  void Reset();

// Put `len` bytes from `data` into buffer
  void Write(const char* data, size_t size);

// Return pointer to contiguous block of reserved data and the size available
  // for future writes. Call Commit() once the write is complete.
  char* PeekWritable(size_t* size);

// Specify how much data was written into the block returned by
  // PeekWritable().
  void Commit(size_t size);

// Return size of buffer in bytes
  inline size_t Length() const {
    return length_;
  }

inline void set_eof_return(int num) {
    eof_return_ = num;
  }

inline int eof_return() {
    return eof_return_;
  }

inline void set_initial(size_t initial) {
    initial_ = initial;
  }

static NodeBIO* FromBIO(BIO* bio);

void MemoryInfo(MemoryTracker* tracker) const override {
    tracker->TrackFieldWithSize("buffer", length_, "NodeBIO::Buffer");
  }

SET_MEMORY_INFO_NAME(NodeBIO)
  SET_SELF_SIZE(NodeBIO)

private:
  static int New(BIO* bio);
  static int Free(BIO* bio);
  static int Read(BIO* bio, char* out, int len);
  static int Write(BIO* bio, const char* data, int len);
  static int Puts(BIO* bio, const char* str);
  static int Gets(BIO* bio, char* out, int size);
  static long Ctrl(BIO* bio, int cmd, long num,  // NOLINT(runtime/int)
                   void* ptr);

static const BIO_METHOD* GetMethod();

// Enough to handle the most of the client hellos
  static const size_t kInitialBufferLength = 1024;
  static const size_t kThroughputBufferLength = 16384;

class Buffer {
   public:
    Buffer(Environment* env, size_t len) : env_(env),
                                           read_pos_(0),
                                           write_pos_(0),
                                           len_(len),
                                           next_(nullptr) {
      data_ = new char[len];
      if (env_ != nullptr)
        env_->isolate()->AdjustAmountOfExternalAllocatedMemory(len);
    }

~Buffer() {
      delete[] data_;
      if (env_ != nullptr) {
        const int64_t len = static_cast<int64_t>(len_);
        env_->isolate()->AdjustAmountOfExternalAllocatedMemory(-len);
      }
    }

Environment* env_;
    size_t read_pos_;
    size_t write_pos_;
    size_t len_;
    Buffer* next_;
    char* data_;
  };

Environment* env_ = nullptr;
  size_t initial_ = kInitialBufferLength;
  size_t length_ = 0;
  int eof_return_ = -1;
  Buffer* read_head_ = nullptr;
  Buffer* write_head_ = nullptr;

friend void node::crypto::InitCryptoOnce();
};

}  // namespace crypto
}  // namespace node

#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif  // SRC_NODE_CRYPTO_BIO_H_

${this.title}

Code Editor : node_crypto_bio.h