All files / lib/internal validators.js

100% Statements 252/252
100% Branches 96/96
100% Functions 9/9
100% Lines 252/252

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 25322x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 226487x 226487x 226487x 22x 103748x 103748x 103748x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 48965x 48965x 48965x 74x 5x 5x 69x 69x 48960x 48960x 48960x 48965x 22x 22x 22x 157806x 157806x 157612x 157806x 157806x 157806x 157806x 22x 22x 22x 22x 226363x 226363x 304x 239x 239x 303x 39x 39x 26x 26x 226363x 22x 22x 226363x 22x 22x 22x 64524x 154x 112x 112x 153x 20x 20x 154x 154x 154x 154x 64524x 9x 9x 22x 22x 1928646x 1928646x 1928646x 1928646x 22x 394800x 394800x 394800x 394800x 22x 22x 12059x 38x 38x 38x 38x 38x 38x 38x 22x 22x 60398x 60398x 60398x 60398x 22x 22x 22x 209225x 209225x 209225x 209225x 209225x 209225x 209181x 167x 209225x 210x 210x 22x 22x 22x 161234x 76x 76x 161234x 1x 1x 1x 22x 22x 7x 7x 7x 6x 7x 2x 1x 1x 1x 1x 1x 1x 7x 22x 22x 53059x 20x 20x 20x 20x 22x 22x 1560x 1560x 1560x 1560x 1560x 7x 7x 7x 1560x 22x 22x 22x 335914x 335914x 335914x 335914x 335914x 335914x 230x 230x 335684x 335914x 22x 22x 747250x 747250x 22x 22x 22x 22446x 131x 131x 22446x 48x 48x 22x 22x 22x 846504x 846504x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x  
'use strict';
 
const {
  ArrayIsArray,
  ArrayPrototypeIncludes,
  ArrayPrototypeJoin,
  ArrayPrototypeMap,
  NumberIsInteger,
  NumberMAX_SAFE_INTEGER,
  NumberMIN_SAFE_INTEGER,
  NumberParseInt,
  RegExpPrototypeTest,
  String,
  StringPrototypeToUpperCase,
  StringPrototypeTrim,
} = primordials;
 
const {
  hideStackFrames,
  codes: {
    ERR_SOCKET_BAD_PORT,
    ERR_INVALID_ARG_TYPE,
    ERR_INVALID_ARG_VALUE,
    ERR_OUT_OF_RANGE,
    ERR_UNKNOWN_SIGNAL,
    ERR_INVALID_CALLBACK,
  }
} = require('internal/errors');
const { normalizeEncoding } = require('internal/util');
const {
  isArrayBufferView
} = require('internal/util/types');
const { signals } = internalBinding('constants').os;
 
function isInt32(value) {
  return value === (value | 0);
}
 
function isUint32(value) {
  return value === (value >>> 0);
}
 
const octalReg = /^[0-7]+$/;
const modeDesc = 'must be a 32-bit unsigned integer or an octal string';
 
/**
 * Parse and validate values that will be converted into mode_t (the S_*
 * constants). Only valid numbers and octal strings are allowed. They could be
 * converted to 32-bit unsigned integers or non-negative signed integers in the
 * C++ land, but any value higher than 0o777 will result in platform-specific
 * behaviors.
 *
 * @param {*} value Values to be validated
 * @param {string} name Name of the argument
 * @param {number} [def] If specified, will be returned for invalid values
 * @returns {number}
 */
function parseFileMode(value, name, def) {
  value ??= def;
  if (typeof value === 'string') {
    if (!RegExpPrototypeTest(octalReg, value)) {
      throw new ERR_INVALID_ARG_VALUE(name, value, modeDesc);
    }
    value = NumberParseInt(value, 8);
  }
 
  validateInt32(value, name, 0, 2 ** 32 - 1);
  return value;
}
 
const validateInteger = hideStackFrames(
  (value, name, min = NumberMIN_SAFE_INTEGER, max = NumberMAX_SAFE_INTEGER) => {
    if (typeof value !== 'number')
      throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
    if (!NumberIsInteger(value))
      throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
    if (value < min || value > max)
      throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
  }
);
 
const validateInt32 = hideStackFrames(
  (value, name, min = -2147483648, max = 2147483647) => {
    // The defaults for min and max correspond to the limits of 32-bit integers.
    if (!isInt32(value)) {
      if (typeof value !== 'number') {
        throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
      }
      if (!NumberIsInteger(value)) {
        throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
      }
      throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
    }
    if (value < min || value > max) {
      throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
    }
  }
);
 
const validateUint32 = hideStackFrames((value, name, positive) => {
  if (!isUint32(value)) {
    if (typeof value !== 'number') {
      throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
    }
    if (!NumberIsInteger(value)) {
      throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
    }
    const min = positive ? 1 : 0;
    // 2 ** 32 === 4294967296
    throw new ERR_OUT_OF_RANGE(name, `>= ${min} && < 4294967296`, value);
  }
  if (positive && value === 0) {
    throw new ERR_OUT_OF_RANGE(name, '>= 1 && < 4294967296', value);
  }
});
 
function validateString(value, name) {
  if (typeof value !== 'string')
    throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
}
 
function validateNumber(value, name) {
  if (typeof value !== 'number')
    throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
}
 
const validateOneOf = hideStackFrames((value, name, oneOf) => {
  if (!ArrayPrototypeIncludes(oneOf, value)) {
    const allowed = ArrayPrototypeJoin(
      ArrayPrototypeMap(oneOf, (v) =>
        (typeof v === 'string' ? `'${v}'` : String(v))),
      ', ');
    const reason = 'must be one of: ' + allowed;
    throw new ERR_INVALID_ARG_VALUE(name, value, reason);
  }
});
 
function validateBoolean(value, name) {
  if (typeof value !== 'boolean')
    throw new ERR_INVALID_ARG_TYPE(name, 'boolean', value);
}
 
const validateObject = hideStackFrames(
  (value, name, {
    nullable = false,
    allowArray = false,
    allowFunction = false,
  } = {}) => {
    if ((!nullable && value === null) ||
        (!allowArray && ArrayIsArray(value)) ||
        (typeof value !== 'object' && (
          !allowFunction || typeof value !== 'function'
        ))) {
      throw new ERR_INVALID_ARG_TYPE(name, 'Object', value);
    }
  });
 
const validateArray = hideStackFrames((value, name, { minLength = 0 } = {}) => {
  if (!ArrayIsArray(value)) {
    throw new ERR_INVALID_ARG_TYPE(name, 'Array', value);
  }
  if (value.length < minLength) {
    const reason = `must be longer than ${minLength}`;
    throw new ERR_INVALID_ARG_VALUE(name, value, reason);
  }
});
 
function validateSignalName(signal, name = 'signal') {
  if (typeof signal !== 'string')
    throw new ERR_INVALID_ARG_TYPE(name, 'string', signal);
 
  if (signals[signal] === undefined) {
    if (signals[StringPrototypeToUpperCase(signal)] !== undefined) {
      throw new ERR_UNKNOWN_SIGNAL(signal +
                                   ' (signals must use all capital letters)');
    }
 
    throw new ERR_UNKNOWN_SIGNAL(signal);
  }
}
 
const validateBuffer = hideStackFrames((buffer, name = 'buffer') => {
  if (!isArrayBufferView(buffer)) {
    throw new ERR_INVALID_ARG_TYPE(name,
                                   ['Buffer', 'TypedArray', 'DataView'],
                                   buffer);
  }
});
 
function validateEncoding(data, encoding) {
  const normalizedEncoding = normalizeEncoding(encoding);
  const length = data.length;
 
  if (normalizedEncoding === 'hex' && length % 2 !== 0) {
    throw new ERR_INVALID_ARG_VALUE('encoding', encoding,
                                    `is invalid for data of length ${length}`);
  }
}
 
// Check that the port number is not NaN when coerced to a number,
// is an integer and that it falls within the legal range of port numbers.
function validatePort(port, name = 'Port', { allowZero = true } = {}) {
  if ((typeof port !== 'number' && typeof port !== 'string') ||
      (typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||
      +port !== (+port >>> 0) ||
      port > 0xFFFF ||
      (port === 0 && !allowZero)) {
    throw new ERR_SOCKET_BAD_PORT(name, port, allowZero);
  }
  return port | 0;
}
 
const validateCallback = hideStackFrames((callback) => {
  if (typeof callback !== 'function')
    throw new ERR_INVALID_CALLBACK(callback);
});
 
const validateAbortSignal = hideStackFrames((signal, name) => {
  if (signal !== undefined &&
      (signal === null ||
       typeof signal !== 'object' ||
       !('aborted' in signal))) {
    throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal);
  }
});
 
const validateFunction = hideStackFrames((value, name) => {
  if (typeof value !== 'function')
    throw new ERR_INVALID_ARG_TYPE(name, 'Function', value);
});
 
module.exports = {
  isInt32,
  isUint32,
  parseFileMode,
  validateArray,
  validateBoolean,
  validateBuffer,
  validateEncoding,
  validateFunction,
  validateInt32,
  validateInteger,
  validateNumber,
  validateObject,
  validateOneOf,
  validatePort,
  validateSignalName,
  validateString,
  validateUint32,
  validateCallback,
  validateAbortSignal,
};