| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | using System.Collections; |
| | | 6 | | using System.Collections.Specialized; |
| | | 7 | | using System.Runtime.Serialization; |
| | | 8 | | using System.Text; |
| | | 9 | | |
| | | 10 | | namespace CoreWCF.Runtime |
| | | 11 | | { |
| | | 12 | | internal static class UrlUtility |
| | | 13 | | { |
| | | 14 | | internal static NameValueCollection ParseQueryString(string query) |
| | | 15 | | { |
| | 1 | 16 | | return ParseQueryString(query, Encoding.UTF8); |
| | | 17 | | } |
| | | 18 | | |
| | | 19 | | internal static NameValueCollection ParseQueryString(string query, Encoding encoding) |
| | | 20 | | { |
| | 1 | 21 | | if (query == null) |
| | | 22 | | { |
| | 0 | 23 | | throw Fx.Exception.ArgumentNull(nameof(query)); |
| | | 24 | | } |
| | | 25 | | |
| | 1 | 26 | | if (encoding == null) |
| | | 27 | | { |
| | 0 | 28 | | throw Fx.Exception.ArgumentNull(nameof(encoding)); |
| | | 29 | | } |
| | | 30 | | |
| | 1 | 31 | | if (query.Length > 0 && query[0] == '?') |
| | | 32 | | { |
| | 1 | 33 | | query = query.Substring(1); |
| | | 34 | | } |
| | | 35 | | |
| | 1 | 36 | | return new HttpValueCollection(query, encoding); |
| | | 37 | | } |
| | | 38 | | |
| | | 39 | | internal static string UrlEncode(string str) |
| | | 40 | | { |
| | 0 | 41 | | if (str == null) |
| | | 42 | | { |
| | 0 | 43 | | return null; |
| | | 44 | | } |
| | | 45 | | |
| | 0 | 46 | | return UrlEncode(str, Encoding.UTF8); |
| | | 47 | | } |
| | | 48 | | |
| | | 49 | | internal static string UrlEncode(string str, Encoding encoding) |
| | | 50 | | { |
| | 0 | 51 | | if (str == null) |
| | | 52 | | { |
| | 0 | 53 | | return null; |
| | | 54 | | } |
| | | 55 | | |
| | 0 | 56 | | return Encoding.ASCII.GetString(UrlEncodeToBytes(str, encoding)); |
| | | 57 | | } |
| | | 58 | | |
| | | 59 | | internal static byte[] UrlEncodeToBytes(string str, Encoding e) |
| | | 60 | | { |
| | 0 | 61 | | if (str == null) |
| | | 62 | | { |
| | 0 | 63 | | return null; |
| | | 64 | | } |
| | | 65 | | |
| | 0 | 66 | | byte[] bytes = e.GetBytes(str); |
| | 0 | 67 | | return UrlEncodeBytesToBytesInternal(bytes, 0, bytes.Length, false); |
| | | 68 | | } |
| | | 69 | | |
| | | 70 | | internal static string UrlEncodeUnicode(string str) |
| | | 71 | | { |
| | 0 | 72 | | if (str == null) |
| | 0 | 73 | | return null; |
| | 0 | 74 | | return UrlEncodeUnicodeStringToStringInternal(str, false); |
| | | 75 | | |
| | | 76 | | } |
| | | 77 | | |
| | | 78 | | internal static string UrlDecode(string str, Encoding e) |
| | | 79 | | { |
| | 31 | 80 | | if (str == null) |
| | | 81 | | { |
| | 0 | 82 | | return null; |
| | | 83 | | } |
| | | 84 | | |
| | 31 | 85 | | return UrlDecodeStringFromStringInternal(str, e); |
| | | 86 | | } |
| | | 87 | | |
| | | 88 | | // Private helpers for URL encoding/decoding |
| | | 89 | | private static string UrlEncodeUnicodeStringToStringInternal(string s, bool ignoreAscii) |
| | | 90 | | { |
| | 0 | 91 | | int l = s.Length; |
| | 0 | 92 | | StringBuilder sb = new StringBuilder(l); |
| | | 93 | | |
| | 0 | 94 | | for (int i = 0; i < l; i++) |
| | | 95 | | { |
| | 0 | 96 | | char ch = s[i]; |
| | | 97 | | |
| | 0 | 98 | | if ((ch & 0xff80) == 0) |
| | | 99 | | { // 7 bit? |
| | 0 | 100 | | if (ignoreAscii || IsSafe(ch)) |
| | | 101 | | { |
| | 0 | 102 | | sb.Append(ch); |
| | | 103 | | } |
| | 0 | 104 | | else if (ch == ' ') |
| | | 105 | | { |
| | 0 | 106 | | sb.Append('+'); |
| | | 107 | | } |
| | | 108 | | else |
| | | 109 | | { |
| | 0 | 110 | | sb.Append('%'); |
| | 0 | 111 | | sb.Append(IntToHex((ch >> 4) & 0xf)); |
| | 0 | 112 | | sb.Append(IntToHex((ch) & 0xf)); |
| | | 113 | | } |
| | | 114 | | } |
| | | 115 | | else |
| | | 116 | | { // arbitrary Unicode? |
| | 0 | 117 | | sb.Append("%u"); |
| | 0 | 118 | | sb.Append(IntToHex((ch >> 12) & 0xf)); |
| | 0 | 119 | | sb.Append(IntToHex((ch >> 8) & 0xf)); |
| | 0 | 120 | | sb.Append(IntToHex((ch >> 4) & 0xf)); |
| | 0 | 121 | | sb.Append(IntToHex((ch) & 0xf)); |
| | | 122 | | } |
| | | 123 | | } |
| | | 124 | | |
| | 0 | 125 | | return sb.ToString(); |
| | | 126 | | } |
| | | 127 | | |
| | | 128 | | private static byte[] UrlEncodeBytesToBytesInternal(byte[] bytes, int offset, int count, bool alwaysCreateReturn |
| | | 129 | | { |
| | 0 | 130 | | int cSpaces = 0; |
| | 0 | 131 | | int cUnsafe = 0; |
| | | 132 | | |
| | | 133 | | // count them first |
| | 0 | 134 | | for (int i = 0; i < count; i++) |
| | | 135 | | { |
| | 0 | 136 | | char ch = (char)bytes[offset + i]; |
| | | 137 | | |
| | 0 | 138 | | if (ch == ' ') |
| | | 139 | | { |
| | 0 | 140 | | cSpaces++; |
| | | 141 | | } |
| | 0 | 142 | | else if (!IsSafe(ch)) |
| | | 143 | | { |
| | 0 | 144 | | cUnsafe++; |
| | | 145 | | } |
| | | 146 | | } |
| | | 147 | | |
| | | 148 | | // nothing to expand? |
| | 0 | 149 | | if (!alwaysCreateReturnValue && cSpaces == 0 && cUnsafe == 0) |
| | | 150 | | { |
| | 0 | 151 | | return bytes; |
| | | 152 | | } |
| | | 153 | | |
| | | 154 | | // expand not 'safe' characters into %XX, spaces to +s |
| | 0 | 155 | | byte[] expandedBytes = new byte[count + cUnsafe * 2]; |
| | 0 | 156 | | int pos = 0; |
| | | 157 | | |
| | 0 | 158 | | for (int i = 0; i < count; i++) |
| | | 159 | | { |
| | 0 | 160 | | byte b = bytes[offset + i]; |
| | 0 | 161 | | char ch = (char)b; |
| | | 162 | | |
| | 0 | 163 | | if (IsSafe(ch)) |
| | | 164 | | { |
| | 0 | 165 | | expandedBytes[pos++] = b; |
| | | 166 | | } |
| | 0 | 167 | | else if (ch == ' ') |
| | | 168 | | { |
| | 0 | 169 | | expandedBytes[pos++] = (byte)'+'; |
| | | 170 | | } |
| | | 171 | | else |
| | | 172 | | { |
| | 0 | 173 | | expandedBytes[pos++] = (byte)'%'; |
| | 0 | 174 | | expandedBytes[pos++] = (byte)IntToHex((b >> 4) & 0xf); |
| | 0 | 175 | | expandedBytes[pos++] = (byte)IntToHex(b & 0x0f); |
| | | 176 | | } |
| | | 177 | | } |
| | | 178 | | |
| | 0 | 179 | | return expandedBytes; |
| | | 180 | | } |
| | | 181 | | |
| | | 182 | | private static string UrlDecodeStringFromStringInternal(string s, Encoding e) |
| | | 183 | | { |
| | 31 | 184 | | int count = s.Length; |
| | 31 | 185 | | UrlDecoder helper = new UrlDecoder(count, e); |
| | | 186 | | |
| | | 187 | | // go through the string's chars collapsing %XX and %uXXXX and |
| | | 188 | | // appending each char as char, with exception of %XX constructs |
| | | 189 | | // that are appended as bytes |
| | | 190 | | |
| | 350 | 191 | | for (int pos = 0; pos < count; pos++) |
| | | 192 | | { |
| | 144 | 193 | | char ch = s[pos]; |
| | | 194 | | |
| | 144 | 195 | | if (ch == '+') |
| | | 196 | | { |
| | 0 | 197 | | ch = ' '; |
| | | 198 | | } |
| | 144 | 199 | | else if (ch == '%' && pos < count - 2) |
| | | 200 | | { |
| | 0 | 201 | | if (s[pos + 1] == 'u' && pos < count - 5) |
| | | 202 | | { |
| | 0 | 203 | | int h1 = HexToInt(s[pos + 2]); |
| | 0 | 204 | | int h2 = HexToInt(s[pos + 3]); |
| | 0 | 205 | | int h3 = HexToInt(s[pos + 4]); |
| | 0 | 206 | | int h4 = HexToInt(s[pos + 5]); |
| | | 207 | | |
| | 0 | 208 | | if (h1 >= 0 && h2 >= 0 && h3 >= 0 && h4 >= 0) |
| | | 209 | | { // valid 4 hex chars |
| | 0 | 210 | | ch = (char)((h1 << 12) | (h2 << 8) | (h3 << 4) | h4); |
| | 0 | 211 | | pos += 5; |
| | | 212 | | |
| | | 213 | | // only add as char |
| | 0 | 214 | | helper.AddChar(ch); |
| | 0 | 215 | | continue; |
| | | 216 | | } |
| | | 217 | | } |
| | | 218 | | else |
| | | 219 | | { |
| | 0 | 220 | | int h1 = HexToInt(s[pos + 1]); |
| | 0 | 221 | | int h2 = HexToInt(s[pos + 2]); |
| | | 222 | | |
| | 0 | 223 | | if (h1 >= 0 && h2 >= 0) |
| | | 224 | | { // valid 2 hex chars |
| | 0 | 225 | | byte b = (byte)((h1 << 4) | h2); |
| | 0 | 226 | | pos += 2; |
| | | 227 | | |
| | | 228 | | // don't add as char |
| | 0 | 229 | | helper.AddByte(b); |
| | 0 | 230 | | continue; |
| | | 231 | | } |
| | | 232 | | } |
| | | 233 | | } |
| | | 234 | | |
| | 144 | 235 | | if ((ch & 0xFF80) == 0) |
| | | 236 | | { |
| | 144 | 237 | | helper.AddByte((byte)ch); // 7 bit have to go as bytes because of Unicode |
| | | 238 | | } |
| | | 239 | | else |
| | | 240 | | { |
| | 0 | 241 | | helper.AddChar(ch); |
| | | 242 | | } |
| | | 243 | | } |
| | | 244 | | |
| | 31 | 245 | | return helper.GetString(); |
| | | 246 | | } |
| | | 247 | | |
| | | 248 | | private static int HexToInt(char h) |
| | | 249 | | { |
| | 0 | 250 | | return (h >= '0' && h <= '9') ? h - '0' : |
| | 0 | 251 | | (h >= 'a' && h <= 'f') ? h - 'a' + 10 : |
| | 0 | 252 | | (h >= 'A' && h <= 'F') ? h - 'A' + 10 : |
| | 0 | 253 | | -1; |
| | | 254 | | } |
| | | 255 | | |
| | | 256 | | private static char IntToHex(int n) |
| | | 257 | | { |
| | | 258 | | //WCF CHANGE: CHANGED FROM Debug.Assert() to Fx.Assert() |
| | | 259 | | Fx.Assert(n < 0x10, "n < 0x10"); |
| | | 260 | | |
| | 0 | 261 | | if (n <= 9) |
| | | 262 | | { |
| | 0 | 263 | | return (char)(n + '0'); |
| | | 264 | | } |
| | | 265 | | else |
| | | 266 | | { |
| | 0 | 267 | | return (char)(n - 10 + 'a'); |
| | | 268 | | } |
| | | 269 | | } |
| | | 270 | | |
| | | 271 | | // Set of safe chars, from RFC 1738.4 minus '+' |
| | | 272 | | internal static bool IsSafe(char ch) |
| | | 273 | | { |
| | 0 | 274 | | if (ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z' || ch >= '0' && ch <= '9') |
| | | 275 | | { |
| | 0 | 276 | | return true; |
| | | 277 | | } |
| | | 278 | | |
| | | 279 | | switch (ch) |
| | | 280 | | { |
| | | 281 | | case '-': |
| | | 282 | | case '_': |
| | | 283 | | case '.': |
| | | 284 | | case '!': |
| | | 285 | | case '*': |
| | | 286 | | case '\'': |
| | | 287 | | case '(': |
| | | 288 | | case ')': |
| | 0 | 289 | | return true; |
| | | 290 | | } |
| | | 291 | | |
| | 0 | 292 | | return false; |
| | | 293 | | } |
| | | 294 | | |
| | | 295 | | // Internal class to facilitate URL decoding -- keeps char buffer and byte buffer, allows appending of either ch |
| | | 296 | | private class UrlDecoder |
| | | 297 | | { |
| | | 298 | | private readonly int _bufferSize; |
| | | 299 | | |
| | | 300 | | // Accumulate characters in a special array |
| | | 301 | | private int _numChars; |
| | | 302 | | private readonly char[] _charBuffer; |
| | | 303 | | |
| | | 304 | | // Accumulate bytes for decoding into characters in a special array |
| | | 305 | | private int _numBytes; |
| | | 306 | | private byte[] _byteBuffer; |
| | | 307 | | |
| | | 308 | | // Encoding to convert chars to bytes |
| | | 309 | | private readonly Encoding _encoding; |
| | | 310 | | |
| | | 311 | | private void FlushBytes() |
| | | 312 | | { |
| | 31 | 313 | | if (_numBytes > 0) |
| | | 314 | | { |
| | 31 | 315 | | _numChars += _encoding.GetChars(_byteBuffer, 0, _numBytes, _charBuffer, _numChars); |
| | 31 | 316 | | _numBytes = 0; |
| | | 317 | | } |
| | 31 | 318 | | } |
| | | 319 | | |
| | 31 | 320 | | internal UrlDecoder(int bufferSize, Encoding encoding) |
| | | 321 | | { |
| | 31 | 322 | | _bufferSize = bufferSize; |
| | 31 | 323 | | _encoding = encoding; |
| | | 324 | | |
| | 31 | 325 | | _charBuffer = new char[bufferSize]; |
| | | 326 | | // byte buffer created on demand |
| | 31 | 327 | | } |
| | | 328 | | |
| | | 329 | | internal void AddChar(char ch) |
| | | 330 | | { |
| | 0 | 331 | | if (_numBytes > 0) |
| | | 332 | | { |
| | 0 | 333 | | FlushBytes(); |
| | | 334 | | } |
| | | 335 | | |
| | 0 | 336 | | _charBuffer[_numChars++] = ch; |
| | 0 | 337 | | } |
| | | 338 | | |
| | | 339 | | internal void AddByte(byte b) |
| | | 340 | | { |
| | | 341 | | // if there are no pending bytes treat 7 bit bytes as characters |
| | | 342 | | // this optimization is temp disable as it doesn't work for some encodings |
| | | 343 | | |
| | | 344 | | //if (_numBytes == 0 && ((b & 0x80) == 0)) { |
| | | 345 | | // AddChar((char)b); |
| | | 346 | | //} |
| | | 347 | | //else |
| | | 348 | | |
| | | 349 | | { |
| | 144 | 350 | | if (_byteBuffer == null) |
| | | 351 | | { |
| | 31 | 352 | | _byteBuffer = new byte[_bufferSize]; |
| | | 353 | | } |
| | | 354 | | |
| | 144 | 355 | | _byteBuffer[_numBytes++] = b; |
| | | 356 | | } |
| | 144 | 357 | | } |
| | | 358 | | |
| | | 359 | | internal string GetString() |
| | | 360 | | { |
| | 31 | 361 | | if (_numBytes > 0) |
| | | 362 | | { |
| | 31 | 363 | | FlushBytes(); |
| | | 364 | | } |
| | | 365 | | |
| | 31 | 366 | | if (_numChars > 0) |
| | | 367 | | { |
| | 31 | 368 | | return new string(_charBuffer, 0, _numChars); |
| | | 369 | | } |
| | | 370 | | else |
| | | 371 | | { |
| | 0 | 372 | | return string.Empty; |
| | | 373 | | } |
| | | 374 | | } |
| | | 375 | | } |
| | | 376 | | } |
| | | 377 | | |
| | | 378 | | [Serializable] |
| | | 379 | | internal class HttpValueCollection : NameValueCollection |
| | | 380 | | { |
| | | 381 | | internal HttpValueCollection(string str, Encoding encoding) |
| | | 382 | | : base(StringComparer.OrdinalIgnoreCase) |
| | | 383 | | { |
| | | 384 | | if (!string.IsNullOrEmpty(str)) |
| | | 385 | | { |
| | | 386 | | FillFromString(str, true, encoding); |
| | | 387 | | } |
| | | 388 | | |
| | | 389 | | IsReadOnly = false; |
| | | 390 | | } |
| | | 391 | | |
| | | 392 | | protected HttpValueCollection(SerializationInfo info, StreamingContext context) |
| | | 393 | | : base(info, context) |
| | | 394 | | { |
| | | 395 | | } |
| | | 396 | | |
| | | 397 | | internal void FillFromString(string s, bool urlencoded, Encoding encoding) |
| | | 398 | | { |
| | | 399 | | int l = (s != null) ? s.Length : 0; |
| | | 400 | | int i = 0; |
| | | 401 | | |
| | | 402 | | while (i < l) |
| | | 403 | | { |
| | | 404 | | // find next & while noting first = on the way (and if there are more) |
| | | 405 | | |
| | | 406 | | int si = i; |
| | | 407 | | int ti = -1; |
| | | 408 | | |
| | | 409 | | while (i < l) |
| | | 410 | | { |
| | | 411 | | char ch = s[i]; |
| | | 412 | | |
| | | 413 | | if (ch == '=') |
| | | 414 | | { |
| | | 415 | | if (ti < 0) |
| | | 416 | | ti = i; |
| | | 417 | | } |
| | | 418 | | else if (ch == '&') |
| | | 419 | | { |
| | | 420 | | break; |
| | | 421 | | } |
| | | 422 | | |
| | | 423 | | i++; |
| | | 424 | | } |
| | | 425 | | |
| | | 426 | | // extract the name / value pair |
| | | 427 | | |
| | | 428 | | string name = null; |
| | | 429 | | string value; |
| | | 430 | | if (ti >= 0) |
| | | 431 | | { |
| | | 432 | | name = s.Substring(si, ti - si); |
| | | 433 | | value = s.Substring(ti + 1, i - ti - 1); |
| | | 434 | | } |
| | | 435 | | else |
| | | 436 | | { |
| | | 437 | | value = s.Substring(si, i - si); |
| | | 438 | | } |
| | | 439 | | |
| | | 440 | | // add name / value pair to the collection |
| | | 441 | | |
| | | 442 | | if (urlencoded) |
| | | 443 | | { |
| | | 444 | | base.Add( |
| | | 445 | | UrlUtility.UrlDecode(name, encoding), |
| | | 446 | | UrlUtility.UrlDecode(value, encoding)); |
| | | 447 | | } |
| | | 448 | | else |
| | | 449 | | { |
| | | 450 | | base.Add(name, value); |
| | | 451 | | } |
| | | 452 | | |
| | | 453 | | // trailing '&' |
| | | 454 | | |
| | | 455 | | if (i == l - 1 && s[i] == '&') |
| | | 456 | | { |
| | | 457 | | base.Add(null, string.Empty); |
| | | 458 | | } |
| | | 459 | | |
| | | 460 | | i++; |
| | | 461 | | } |
| | | 462 | | } |
| | | 463 | | |
| | | 464 | | public override string ToString() => ToString(true, null); |
| | | 465 | | |
| | | 466 | | private string ToString(bool urlencoded, IDictionary excludeKeys) |
| | | 467 | | { |
| | | 468 | | int n = Count; |
| | | 469 | | if (n == 0) |
| | | 470 | | return string.Empty; |
| | | 471 | | |
| | | 472 | | StringBuilder s = new StringBuilder(); |
| | | 473 | | string key, keyPrefix, item; |
| | | 474 | | |
| | | 475 | | for (int i = 0; i < n; i++) |
| | | 476 | | { |
| | | 477 | | key = GetKey(i); |
| | | 478 | | |
| | | 479 | | if (excludeKeys != null && key != null && excludeKeys[key] != null) |
| | | 480 | | { |
| | | 481 | | continue; |
| | | 482 | | } |
| | | 483 | | if (urlencoded) |
| | | 484 | | { |
| | | 485 | | key = UrlUtility.UrlEncodeUnicode(key); |
| | | 486 | | } |
| | | 487 | | keyPrefix = (!string.IsNullOrEmpty(key)) ? (key + "=") : string.Empty; |
| | | 488 | | |
| | | 489 | | ArrayList values = (ArrayList)BaseGet(i); |
| | | 490 | | int numValues = (values != null) ? values.Count : 0; |
| | | 491 | | |
| | | 492 | | if (s.Length > 0) |
| | | 493 | | { |
| | | 494 | | s.Append('&'); |
| | | 495 | | } |
| | | 496 | | |
| | | 497 | | if (numValues == 1) |
| | | 498 | | { |
| | | 499 | | s.Append(keyPrefix); |
| | | 500 | | item = (string)values[0]; |
| | | 501 | | if (urlencoded) |
| | | 502 | | item = UrlUtility.UrlEncodeUnicode(item); |
| | | 503 | | s.Append(item); |
| | | 504 | | } |
| | | 505 | | else if (numValues == 0) |
| | | 506 | | { |
| | | 507 | | s.Append(keyPrefix); |
| | | 508 | | } |
| | | 509 | | else |
| | | 510 | | { |
| | | 511 | | for (int j = 0; j < numValues; j++) |
| | | 512 | | { |
| | | 513 | | if (j > 0) |
| | | 514 | | { |
| | | 515 | | s.Append('&'); |
| | | 516 | | } |
| | | 517 | | s.Append(keyPrefix); |
| | | 518 | | item = (string)values[j]; |
| | | 519 | | if (urlencoded) |
| | | 520 | | { |
| | | 521 | | item = UrlUtility.UrlEncodeUnicode(item); |
| | | 522 | | } |
| | | 523 | | s.Append(item); |
| | | 524 | | } |
| | | 525 | | } |
| | | 526 | | } |
| | | 527 | | |
| | | 528 | | return s.ToString(); |
| | | 529 | | } |
| | | 530 | | } |
| | | 531 | | } |