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annotate src/org/eclipse/jetty/util/URIUtil.java @ 1023:27f3dc761452
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| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Tue, 01 Nov 2016 03:44:46 -0600 |
| parents | 6939226e0ac4 |
| children |
| rev | line source |
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1 // |
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2 // ======================================================================== |
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
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4 // ------------------------------------------------------------------------ |
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5 // All rights reserved. This program and the accompanying materials |
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6 // are made available under the terms of the Eclipse Public License v1.0 |
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7 // and Apache License v2.0 which accompanies this distribution. |
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8 // |
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9 // The Eclipse Public License is available at |
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10 // http://www.eclipse.org/legal/epl-v10.html |
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11 // |
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12 // The Apache License v2.0 is available at |
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13 // http://www.opensource.org/licenses/apache2.0.php |
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14 // |
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15 // You may elect to redistribute this code under either of these licenses. |
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16 // ======================================================================== |
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17 // |
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18 |
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19 package org.eclipse.jetty.util; |
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20 |
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21 import java.io.UnsupportedEncodingException; |
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22 import java.net.URI; |
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23 import java.net.URLEncoder; |
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24 |
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25 |
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26 |
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27 /* ------------------------------------------------------------ */ |
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28 /** URI Holder. |
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29 * This class assists with the decoding and encoding or HTTP URI's. |
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30 * It differs from the java.net.URL class as it does not provide |
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31 * communications ability, but it does assist with query string |
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32 * formatting. |
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33 * <P>UTF-8 encoding is used by default for % encoded characters. This |
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34 * may be overridden with the org.eclipse.jetty.util.URI.charset system property. |
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35 * @see UrlEncoded |
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36 * |
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37 */ |
| 1013 | 38 public final class URIUtil { |
| 39 // Use UTF-8 as per http://www.w3.org/TR/html40/appendix/notes.html#non-ascii-chars | |
| 40 public static final String __CHARSET = StringUtil.__UTF8; | |
| 41 | |
| 42 private URIUtil() | |
| 43 {} | |
| 44 | |
| 45 /* ------------------------------------------------------------ */ | |
| 46 /** Encode a URI path. | |
| 47 * This is the same encoding offered by URLEncoder, except that | |
| 48 * the '/' character is not encoded. | |
| 49 * @param path The path the encode | |
| 50 * @return The encoded path | |
| 51 */ | |
| 52 public static String encodePath(String path) | |
| 53 { | |
| 54 if (path==null || path.length()==0) | |
| 55 return path; | |
| 56 | |
| 57 StringBuilder buf = encodePath(null,path); | |
| 58 return buf==null?path:buf.toString(); | |
| 59 } | |
| 60 | |
| 61 /* ------------------------------------------------------------ */ | |
| 62 /** Encode a URI path. | |
| 63 * @param path The path the encode | |
| 64 * @param buf StringBuilder to encode path into (or null) | |
| 65 * @return The StringBuilder or null if no substitutions required. | |
| 66 */ | |
| 67 public static StringBuilder encodePath(StringBuilder buf, String path) | |
| 68 { | |
| 69 byte[] bytes=null; | |
| 70 if (buf==null) | |
| 71 { | |
| 72 loop: | |
| 73 for (int i=0;i<path.length();i++) | |
| 74 { | |
| 75 char c=path.charAt(i); | |
| 76 switch(c) | |
| 77 { | |
| 78 case '%': | |
| 79 case '?': | |
| 80 case ';': | |
| 81 case '#': | |
| 82 case '\'': | |
| 83 case '"': | |
| 84 case '<': | |
| 85 case '>': | |
| 86 case ' ': | |
| 87 buf=new StringBuilder(path.length()*2); | |
| 88 break loop; | |
| 89 default: | |
| 90 if (c>127) | |
| 91 { | |
| 92 try | |
| 93 { | |
| 94 bytes=path.getBytes(URIUtil.__CHARSET); | |
| 95 } | |
| 96 catch (UnsupportedEncodingException e) | |
| 97 { | |
| 98 throw new IllegalStateException(e); | |
| 99 } | |
| 100 buf=new StringBuilder(path.length()*2); | |
| 101 break loop; | |
| 102 } | |
| 103 | |
| 104 } | |
| 105 } | |
| 106 if (buf==null) | |
| 107 return null; | |
| 108 } | |
| 109 | |
| 110 synchronized(buf) | |
| 111 { | |
| 112 if (bytes!=null) | |
| 113 { | |
| 114 for (int i=0;i<bytes.length;i++) | |
| 115 { | |
| 116 byte c=bytes[i]; | |
| 117 switch(c) | |
| 118 { | |
| 119 case '%': | |
| 120 buf.append("%25"); | |
| 121 continue; | |
| 122 case '?': | |
| 123 buf.append("%3F"); | |
| 124 continue; | |
| 125 case ';': | |
| 126 buf.append("%3B"); | |
| 127 continue; | |
| 128 case '#': | |
| 129 buf.append("%23"); | |
| 130 continue; | |
| 131 case '"': | |
| 132 buf.append("%22"); | |
| 133 continue; | |
| 134 case '\'': | |
| 135 buf.append("%27"); | |
| 136 continue; | |
| 137 case '<': | |
| 138 buf.append("%3C"); | |
| 139 continue; | |
| 140 case '>': | |
| 141 buf.append("%3E"); | |
| 142 continue; | |
| 143 case ' ': | |
| 144 buf.append("%20"); | |
| 145 continue; | |
| 146 default: | |
| 147 if (c<0) | |
| 148 { | |
| 149 buf.append('%'); | |
| 150 TypeUtil.toHex(c,buf); | |
| 151 } | |
| 152 else | |
| 153 buf.append((char)c); | |
| 154 continue; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 } | |
| 159 else | |
| 160 { | |
| 161 for (int i=0;i<path.length();i++) | |
| 162 { | |
| 163 char c=path.charAt(i); | |
| 164 switch(c) | |
| 165 { | |
| 166 case '%': | |
| 167 buf.append("%25"); | |
| 168 continue; | |
| 169 case '?': | |
| 170 buf.append("%3F"); | |
| 171 continue; | |
| 172 case ';': | |
| 173 buf.append("%3B"); | |
| 174 continue; | |
| 175 case '#': | |
| 176 buf.append("%23"); | |
| 177 continue; | |
| 178 case '"': | |
| 179 buf.append("%22"); | |
| 180 continue; | |
| 181 case '\'': | |
| 182 buf.append("%27"); | |
| 183 continue; | |
| 184 case '<': | |
| 185 buf.append("%3C"); | |
| 186 continue; | |
| 187 case '>': | |
| 188 buf.append("%3E"); | |
| 189 continue; | |
| 190 case ' ': | |
| 191 buf.append("%20"); | |
| 192 continue; | |
| 193 default: | |
| 194 buf.append(c); | |
| 195 continue; | |
| 196 } | |
| 197 } | |
| 198 } | |
| 199 } | |
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200 |
| 1013 | 201 return buf; |
| 202 } | |
| 203 | |
| 204 /* ------------------------------------------------------------ */ | |
| 205 /* Decode a URI path and strip parameters | |
| 206 * @param path The path the encode | |
| 207 * @param buf StringBuilder to encode path into | |
| 208 */ | |
| 209 public static String decodePath(String path) | |
| 210 { | |
| 211 if (path==null) | |
| 212 return null; | |
| 213 // Array to hold all converted characters | |
| 214 char[] chars=null; | |
| 215 int n=0; | |
| 216 // Array to hold a sequence of %encodings | |
| 217 byte[] bytes=null; | |
| 218 int b=0; | |
| 219 | |
| 220 int len=path.length(); | |
| 221 | |
| 222 for (int i=0;i<len;i++) | |
| 223 { | |
| 224 char c = path.charAt(i); | |
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225 |
| 1013 | 226 if (c=='%' && (i+2)<len) |
| 227 { | |
| 228 if (chars==null) | |
| 229 { | |
| 230 chars=new char[len]; | |
| 231 bytes=new byte[len]; | |
| 232 path.getChars(0,i,chars,0); | |
| 233 } | |
| 234 bytes[b++]=(byte)(0xff&TypeUtil.parseInt(path,i+1,2,16)); | |
| 235 i+=2; | |
| 236 continue; | |
| 237 } | |
| 238 else if (c==';') | |
| 239 { | |
| 240 if (chars==null) | |
| 241 { | |
| 242 chars=new char[len]; | |
| 243 path.getChars(0,i,chars,0); | |
| 244 n=i; | |
| 245 } | |
| 246 break; | |
| 247 } | |
| 248 else if (bytes==null) | |
| 249 { | |
| 250 n++; | |
| 251 continue; | |
| 252 } | |
| 253 | |
| 254 // Do we have some bytes to convert? | |
| 255 if (b>0) | |
| 256 { | |
| 257 // convert series of bytes and add to chars | |
| 258 String s; | |
| 259 try | |
| 260 { | |
| 261 s=new String(bytes,0,b,__CHARSET); | |
| 262 } | |
| 263 catch (UnsupportedEncodingException e) | |
| 264 { | |
| 265 s=new String(bytes,0,b); | |
| 266 } | |
| 267 s.getChars(0,s.length(),chars,n); | |
| 268 n+=s.length(); | |
| 269 b=0; | |
| 270 } | |
| 271 | |
| 272 chars[n++]=c; | |
| 273 } | |
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274 |
| 1013 | 275 if (chars==null) |
| 276 return path; | |
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277 |
| 1013 | 278 // if we have a remaining sequence of bytes |
| 279 if (b>0) | |
| 280 { | |
| 281 // convert series of bytes and add to chars | |
| 282 String s; | |
| 283 try | |
| 284 { | |
| 285 s=new String(bytes,0,b,__CHARSET); | |
| 286 } | |
| 287 catch (UnsupportedEncodingException e) | |
| 288 { | |
| 289 s=new String(bytes,0,b); | |
| 290 } | |
| 291 s.getChars(0,s.length(),chars,n); | |
| 292 n+=s.length(); | |
| 293 } | |
| 294 | |
| 295 return new String(chars,0,n); | |
| 296 } | |
| 297 | |
| 298 /* ------------------------------------------------------------ */ | |
| 299 /* Decode a URI path and strip parameters. | |
| 300 * @param path The path the encode | |
| 301 * @param buf StringBuilder to encode path into | |
| 302 */ | |
| 303 public static String decodePath(byte[] buf, int offset, int length) | |
| 304 { | |
| 305 byte[] bytes=null; | |
| 306 int n=0; | |
| 307 | |
| 308 for (int i=0;i<length;i++) | |
| 309 { | |
| 310 byte b = buf[i + offset]; | |
| 311 | |
| 312 if (b=='%' && (i+2)<length) | |
| 313 { | |
| 314 b=(byte)(0xff&TypeUtil.parseInt(buf,i+offset+1,2,16)); | |
| 315 i+=2; | |
| 316 } | |
| 317 else if (b==';') | |
| 318 { | |
| 319 length=i; | |
| 320 break; | |
| 321 } | |
| 322 else if (bytes==null) | |
| 323 { | |
| 324 n++; | |
| 325 continue; | |
| 326 } | |
| 327 | |
| 328 if (bytes==null) | |
| 329 { | |
| 330 bytes=new byte[length]; | |
| 331 for (int j=0;j<n;j++) | |
| 332 bytes[j]=buf[j + offset]; | |
| 333 } | |
| 334 | |
| 335 bytes[n++]=b; | |
| 336 } | |
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337 |
| 1013 | 338 if (bytes==null) |
| 339 return StringUtil.toString(buf,offset,length,__CHARSET); | |
| 340 return StringUtil.toString(bytes,0,n,__CHARSET); | |
| 341 } | |
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342 |
| 1013 | 343 |
| 344 /* ------------------------------------------------------------ */ | |
| 345 /** Add two URI path segments. | |
| 346 * Handles null and empty paths, path and query params (eg ?a=b or | |
| 347 * ;JSESSIONID=xxx) and avoids duplicate '/' | |
| 348 * @param p1 URI path segment (should be encoded) | |
| 349 * @param p2 URI path segment (should be encoded) | |
| 350 * @return Legally combined path segments. | |
| 351 */ | |
| 352 public static String addPaths(String p1, String p2) | |
| 353 { | |
| 354 if (p1==null || p1.length()==0) | |
| 355 { | |
| 356 if (p1!=null && p2==null) | |
| 357 return p1; | |
| 358 return p2; | |
| 359 } | |
| 360 if (p2==null || p2.length()==0) | |
| 361 return p1; | |
| 362 | |
| 363 int split=p1.indexOf(';'); | |
| 364 if (split<0) | |
| 365 split=p1.indexOf('?'); | |
| 366 if (split==0) | |
| 367 return p2+p1; | |
| 368 if (split<0) | |
| 369 split=p1.length(); | |
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370 |
| 1013 | 371 StringBuilder buf = new StringBuilder(p1.length()+p2.length()+2); |
| 372 buf.append(p1); | |
| 373 | |
| 374 if (buf.charAt(split-1)=='/') | |
| 375 { | |
| 376 if (p2.startsWith("/")) | |
| 377 { | |
| 378 buf.deleteCharAt(split-1); | |
| 379 buf.insert(split-1,p2); | |
| 380 } | |
| 381 else | |
| 382 buf.insert(split,p2); | |
| 383 } | |
| 384 else | |
| 385 { | |
| 386 if (p2.startsWith("/")) | |
| 387 buf.insert(split,p2); | |
| 388 else | |
| 389 { | |
| 390 buf.insert(split,'/'); | |
| 391 buf.insert(split+1,p2); | |
| 392 } | |
| 393 } | |
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394 |
| 1013 | 395 return buf.toString(); |
| 396 } | |
| 397 | |
| 398 /* ------------------------------------------------------------ */ | |
| 399 /** Return the parent Path. | |
| 400 * Treat a URI like a directory path and return the parent directory. | |
| 401 */ | |
| 402 public static String parentPath(String p) | |
| 403 { | |
| 404 if (p==null || "/".equals(p)) | |
| 405 return null; | |
| 406 int slash=p.lastIndexOf('/',p.length()-2); | |
| 407 if (slash>=0) | |
| 408 return p.substring(0,slash+1); | |
| 409 return null; | |
| 410 } | |
| 411 | |
| 412 /* ------------------------------------------------------------ */ | |
| 413 /** Convert a path to a cananonical form. | |
| 414 * All instances of "." and ".." are factored out. Null is returned | |
| 415 * if the path tries to .. above its root. | |
| 416 * @param path | |
| 417 * @return path or null. | |
| 418 */ | |
| 419 public static String canonicalPath(String path) | |
| 420 { | |
| 421 if (path==null || path.length()==0) | |
| 422 return path; | |
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423 |
| 1013 | 424 int end=path.length(); |
| 425 int start = path.lastIndexOf('/', end); | |
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426 |
| 1013 | 427 search: |
| 428 while (end>0) | |
| 429 { | |
| 430 switch(end-start) | |
| 431 { | |
| 432 case 2: // possible single dot | |
| 433 if (path.charAt(start+1)!='.') | |
| 434 break; | |
| 435 break search; | |
| 436 case 3: // possible double dot | |
| 437 if (path.charAt(start+1)!='.' || path.charAt(start+2)!='.') | |
| 438 break; | |
| 439 break search; | |
| 440 } | |
| 441 | |
| 442 end=start; | |
| 443 start=path.lastIndexOf('/',end-1); | |
| 444 } | |
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445 |
| 1013 | 446 // If we have checked the entire string |
| 447 if (start>=end) | |
| 448 return path; | |
| 449 | |
| 450 StringBuilder buf = new StringBuilder(path); | |
| 451 int delStart=-1; | |
| 452 int delEnd=-1; | |
| 453 int skip=0; | |
| 454 | |
| 455 while (end>0) | |
| 456 { | |
| 457 switch(end-start) | |
| 458 { | |
| 459 case 2: // possible single dot | |
| 460 if (buf.charAt(start+1)!='.') | |
| 461 { | |
| 462 if (skip>0 && --skip==0) | |
| 463 { | |
| 464 delStart=start>=0?start:0; | |
| 465 if(delStart>0 && delEnd==buf.length() && buf.charAt(delEnd-1)=='.') | |
| 466 delStart++; | |
| 467 } | |
| 468 break; | |
| 469 } | |
| 470 | |
| 471 if(start<0 && buf.length()>2 && buf.charAt(1)=='/' && buf.charAt(2)=='/') | |
| 472 break; | |
| 473 | |
| 474 if(delEnd<0) | |
| 475 delEnd=end; | |
| 476 delStart=start; | |
| 477 if (delStart<0 || delStart==0&&buf.charAt(delStart)=='/') | |
| 478 { | |
| 479 delStart++; | |
| 480 if (delEnd<buf.length() && buf.charAt(delEnd)=='/') | |
| 481 delEnd++; | |
| 482 break; | |
| 483 } | |
| 484 if (end==buf.length()) | |
| 485 delStart++; | |
| 486 | |
| 487 end=start--; | |
| 488 while (start>=0 && buf.charAt(start)!='/') | |
| 489 start--; | |
| 490 continue; | |
| 491 | |
| 492 case 3: // possible double dot | |
| 493 if (buf.charAt(start+1)!='.' || buf.charAt(start+2)!='.') | |
| 494 { | |
| 495 if (skip>0 && --skip==0) | |
| 496 { delStart=start>=0?start:0; | |
| 497 if(delStart>0 && delEnd==buf.length() && buf.charAt(delEnd-1)=='.') | |
| 498 delStart++; | |
| 499 } | |
| 500 break; | |
| 501 } | |
| 502 | |
| 503 delStart=start; | |
| 504 if (delEnd<0) | |
| 505 delEnd=end; | |
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parents:
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506 |
| 1013 | 507 skip++; |
| 508 end=start--; | |
| 509 while (start>=0 && buf.charAt(start)!='/') | |
| 510 start--; | |
| 511 continue; | |
| 512 | |
| 513 default: | |
| 514 if (skip>0 && --skip==0) | |
| 515 { | |
| 516 delStart=start>=0?start:0; | |
| 517 if(delEnd==buf.length() && buf.charAt(delEnd-1)=='.') | |
| 518 delStart++; | |
| 519 } | |
| 520 } | |
| 521 | |
| 522 // Do the delete | |
| 523 if (skip<=0 && delStart>=0 && delEnd>=delStart) | |
| 524 { | |
| 525 buf.delete(delStart,delEnd); | |
| 526 delStart=delEnd=-1; | |
| 527 if (skip>0) | |
| 528 delEnd=end; | |
| 529 } | |
| 530 | |
| 531 end=start--; | |
| 532 while (start>=0 && buf.charAt(start)!='/') | |
| 533 start--; | |
| 534 } | |
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parents:
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changeset
|
535 |
| 1013 | 536 // Too many .. |
| 537 if (skip>0) | |
| 538 return null; | |
| 539 | |
| 540 // Do the delete | |
| 541 if (delEnd>=0) | |
| 542 buf.delete(delStart,delEnd); | |
| 543 | |
| 544 return buf.toString(); | |
| 545 } | |
| 546 | |
| 547 /* ------------------------------------------------------------ */ | |
| 548 /** | |
| 549 * @param uri URI | |
| 550 * @return True if the uri has a scheme | |
| 551 */ | |
| 552 public static boolean hasScheme(String uri) | |
| 553 { | |
| 554 for (int i=0;i<uri.length();i++) | |
| 555 { | |
| 556 char c=uri.charAt(i); | |
| 557 if (c==':') | |
| 558 return true; | |
| 559 if (!(c>='a'&&c<='z' || | |
| 560 c>='A'&&c<='Z' || | |
| 561 (i>0 &&(c>='0'&&c<='9' || | |
| 562 c=='.' || | |
| 563 c=='+' || | |
| 564 c=='-')) | |
| 565 )) | |
| 566 break; | |
| 567 } | |
| 568 return false; | |
| 569 } | |
| 570 | |
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802
3428c60d7cfc
replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff
changeset
|
571 } |
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3428c60d7cfc
replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff
changeset
|
572 |
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3428c60d7cfc
replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff
changeset
|
573 |
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3428c60d7cfc
replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff
changeset
|
574 |