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[VSoRC/.git] / node_modules / websocket / src / validation.cc

diff --git a/node_modules/websocket/src/validation.cc b/node_modules/websocket/src/validation.cc
deleted file mode 100644 (file)
index 3db4f65..0000000
--- a/node_modules/websocket/src/validation.cc
+++ /dev/null
@@ -1,148 +0,0 @@
-/*!
- * UTF-8 Validation Code originally from:
- * ws: a node.js websocket client
- * Copyright(c) 2015 Einar Otto Stangvik <einaros@gmail.com>
- * MIT Licensed
- */
-
-#include <v8.h>
-#include <node.h>
-#include <node_version.h>
-#include <node_buffer.h>
-#include <node_object_wrap.h>
-#include <stdlib.h>
-#include <wchar.h>
-#include <stdio.h>
-#include "nan.h"
-
-using namespace v8;
-using namespace node;
-
-#define UNI_SUR_HIGH_START   (uint32_t) 0xD800
-#define UNI_SUR_LOW_END    (uint32_t) 0xDFFF
-#define UNI_REPLACEMENT_CHAR (uint32_t) 0x0000FFFD
-#define UNI_MAX_LEGAL_UTF32  (uint32_t) 0x0010FFFF
-
-static const uint8_t trailingBytesForUTF8[256] = {
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
-  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
-};
-
-static const uint32_t offsetsFromUTF8[6] = {
-  0x00000000, 0x00003080, 0x000E2080,
-  0x03C82080, 0xFA082080, 0x82082080
-};
-
-static int isLegalUTF8(const uint8_t *source, const int length)
-{
-  uint8_t a;
-  const uint8_t *srcptr = source+length;
-  switch (length) {
-  default: return 0;
-  /* Everything else falls through when "true"... */
-  /* RFC3629 makes 5 & 6 bytes UTF-8 illegal
-  case 6: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
-  case 5: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0; */
-  case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
-  case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
-  case 2: if ((a = (*--srcptr)) > 0xBF) return 0;
-    switch (*source) {
-      /* no fall-through in this inner switch */
-      case 0xE0: if (a < 0xA0) return 0; break;
-      case 0xED: if (a > 0x9F) return 0; break;
-      case 0xF0: if (a < 0x90) return 0; break;
-      case 0xF4: if (a > 0x8F) return 0; break;
-      default:   if (a < 0x80) return 0;
-    }
-
-  case 1: if (*source >= 0x80 && *source < 0xC2) return 0;
-  }
-  if (*source > 0xF4) return 0;
-  return 1;
-}
-
-int is_valid_utf8 (size_t len, char *value)
-{
-  /* is the string valid UTF-8? */
-  for (unsigned int i = 0; i < len; i++) {
-    uint32_t ch = 0;
-    uint8_t  extrabytes = trailingBytesForUTF8[(uint8_t) value[i]];
-
-    if (extrabytes + i >= len)
-      return 0;
-
-    if (isLegalUTF8 ((uint8_t *) (value + i), extrabytes + 1) == 0) return 0;
-
-    switch (extrabytes) {
-      case 5 : ch += (uint8_t) value[i++]; ch <<= 6;
-      case 4 : ch += (uint8_t) value[i++]; ch <<= 6;
-      case 3 : ch += (uint8_t) value[i++]; ch <<= 6;
-      case 2 : ch += (uint8_t) value[i++]; ch <<= 6;
-      case 1 : ch += (uint8_t) value[i++]; ch <<= 6;
-      case 0 : ch += (uint8_t) value[i];
-    }
-
-    ch -= offsetsFromUTF8[extrabytes];
-
-    if (ch <= UNI_MAX_LEGAL_UTF32) {
-      if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END)
-        return 0;
-    } else {
-      return 0;
-    }
-  }
-
-  return 1;
-}
-
-class Validation : public ObjectWrap
-{
-public:
-
-  static void Initialize(v8::Local<v8::Object> target)
-  {
-    Nan::HandleScope scope;
-    Local<FunctionTemplate> t = Nan::New<FunctionTemplate>(New);
-    t->InstanceTemplate()->SetInternalFieldCount(1);
-    Nan::SetMethod(t, "isValidUTF8", Validation::IsValidUTF8);
-    Nan::Set(target, Nan::New<String>("Validation").ToLocalChecked(), t->GetFunction());
-  }
-
-protected:
-
-  static NAN_METHOD(New)
-  {
-    Nan::HandleScope scope;
-    Validation* validation = new Validation();
-    validation->Wrap(info.This());
-    info.GetReturnValue().Set(info.This());
-  }
-
-  static NAN_METHOD(IsValidUTF8)
-  {
-    Nan::HandleScope scope;
-    if (!Buffer::HasInstance(info[0])) {
-      return Nan::ThrowTypeError("First argument needs to be a buffer");
-    }
-    Local<Object> buffer_obj = info[0]->ToObject();
-    char *buffer_data = Buffer::Data(buffer_obj);
-    size_t buffer_length = Buffer::Length(buffer_obj);
-    info.GetReturnValue().Set(is_valid_utf8(buffer_length, buffer_data) == 1 ? Nan::True() : Nan::False());
-  }
-};
-#if !NODE_VERSION_AT_LEAST(0,10,0)
-extern "C"
-#endif
-void init (Local<Object> target)
-{
-  Nan::HandleScope scope;
-  Validation::Initialize(target);
-}
-
-NODE_MODULE(validation, init)