/projects/jre-1.6.0/src/com/sun/org/apache/xml/internal/utils/URI.java
Java | 1672 lines | 909 code | 220 blank | 543 comment | 349 complexity | c51868f2d60b41e80417a28416dba0f9 MD5 | raw file
1/*
2 * Copyright 1999-2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/*
17 * $Id: URI.java,v 1.2.4.1 2005/09/15 08:16:00 suresh_emailid Exp $
18 */
19package com.sun.org.apache.xml.internal.utils;
20
21import java.io.IOException;
22import java.io.Serializable;
23
24import com.sun.org.apache.xml.internal.res.XMLErrorResources;
25import com.sun.org.apache.xml.internal.res.XMLMessages;
26
27/**
28 * A class to represent a Uniform Resource Identifier (URI). This class
29 * is designed to handle the parsing of URIs and provide access to
30 * the various components (scheme, host, port, userinfo, path, query
31 * string and fragment) that may constitute a URI.
32 * <p>
33 * Parsing of a URI specification is done according to the URI
34 * syntax described in RFC 2396
35 * <http://www.ietf.org/rfc/rfc2396.txt?number=2396>. Every URI consists
36 * of a scheme, followed by a colon (':'), followed by a scheme-specific
37 * part. For URIs that follow the "generic URI" syntax, the scheme-
38 * specific part begins with two slashes ("//") and may be followed
39 * by an authority segment (comprised of user information, host, and
40 * port), path segment, query segment and fragment. Note that RFC 2396
41 * no longer specifies the use of the parameters segment and excludes
42 * the "user:password" syntax as part of the authority segment. If
43 * "user:password" appears in a URI, the entire user/password string
44 * is stored as userinfo.
45 * <p>
46 * For URIs that do not follow the "generic URI" syntax (e.g. mailto),
47 * the entire scheme-specific part is treated as the "path" portion
48 * of the URI.
49 * <p>
50 * Note that, unlike the java.net.URL class, this class does not provide
51 * any built-in network access functionality nor does it provide any
52 * scheme-specific functionality (for example, it does not know a
53 * default port for a specific scheme). Rather, it only knows the
54 * grammar and basic set of operations that can be applied to a URI.
55 *
56 *
57 */
58public class URI implements Serializable
59{
60 static final long serialVersionUID = 7096266377907081897L;
61
62 /**
63 * MalformedURIExceptions are thrown in the process of building a URI
64 * or setting fields on a URI when an operation would result in an
65 * invalid URI specification.
66 *
67 */
68 public static class MalformedURIException extends IOException
69 {
70
71 /**
72 * Constructs a <code>MalformedURIException</code> with no specified
73 * detail message.
74 */
75 public MalformedURIException()
76 {
77 super();
78 }
79
80 /**
81 * Constructs a <code>MalformedURIException</code> with the
82 * specified detail message.
83 *
84 * @param p_msg the detail message.
85 */
86 public MalformedURIException(String p_msg)
87 {
88 super(p_msg);
89 }
90 }
91
92 /** reserved characters */
93 private static final String RESERVED_CHARACTERS = ";/?:@&=+$,";
94
95 /**
96 * URI punctuation mark characters - these, combined with
97 * alphanumerics, constitute the "unreserved" characters
98 */
99 private static final String MARK_CHARACTERS = "-_.!~*'() ";
100
101 /** scheme can be composed of alphanumerics and these characters */
102 private static final String SCHEME_CHARACTERS = "+-.";
103
104 /**
105 * userinfo can be composed of unreserved, escaped and these
106 * characters
107 */
108 private static final String USERINFO_CHARACTERS = ";:&=+$,";
109
110 /** Stores the scheme (usually the protocol) for this URI.
111 * @serial */
112 private String m_scheme = null;
113
114 /** If specified, stores the userinfo for this URI; otherwise null.
115 * @serial */
116 private String m_userinfo = null;
117
118 /** If specified, stores the host for this URI; otherwise null.
119 * @serial */
120 private String m_host = null;
121
122 /** If specified, stores the port for this URI; otherwise -1.
123 * @serial */
124 private int m_port = -1;
125
126 /** If specified, stores the path for this URI; otherwise null.
127 * @serial */
128 private String m_path = null;
129
130 /**
131 * If specified, stores the query string for this URI; otherwise
132 * null.
133 * @serial
134 */
135 private String m_queryString = null;
136
137 /** If specified, stores the fragment for this URI; otherwise null.
138 * @serial */
139 private String m_fragment = null;
140
141 /** Indicate whether in DEBUG mode */
142 private static boolean DEBUG = false;
143
144 /**
145 * Construct a new and uninitialized URI.
146 */
147 public URI(){}
148
149 /**
150 * Construct a new URI from another URI. All fields for this URI are
151 * set equal to the fields of the URI passed in.
152 *
153 * @param p_other the URI to copy (cannot be null)
154 */
155 public URI(URI p_other)
156 {
157 initialize(p_other);
158 }
159
160 /**
161 * Construct a new URI from a URI specification string. If the
162 * specification follows the "generic URI" syntax, (two slashes
163 * following the first colon), the specification will be parsed
164 * accordingly - setting the scheme, userinfo, host,port, path, query
165 * string and fragment fields as necessary. If the specification does
166 * not follow the "generic URI" syntax, the specification is parsed
167 * into a scheme and scheme-specific part (stored as the path) only.
168 *
169 * @param p_uriSpec the URI specification string (cannot be null or
170 * empty)
171 *
172 * @throws MalformedURIException if p_uriSpec violates any syntax
173 * rules
174 */
175 public URI(String p_uriSpec) throws MalformedURIException
176 {
177 this((URI) null, p_uriSpec);
178 }
179
180 /**
181 * Construct a new URI from a base URI and a URI specification string.
182 * The URI specification string may be a relative URI.
183 *
184 * @param p_base the base URI (cannot be null if p_uriSpec is null or
185 * empty)
186 * @param p_uriSpec the URI specification string (cannot be null or
187 * empty if p_base is null)
188 *
189 * @throws MalformedURIException if p_uriSpec violates any syntax
190 * rules
191 */
192 public URI(URI p_base, String p_uriSpec) throws MalformedURIException
193 {
194 initialize(p_base, p_uriSpec);
195 }
196
197 /**
198 * Construct a new URI that does not follow the generic URI syntax.
199 * Only the scheme and scheme-specific part (stored as the path) are
200 * initialized.
201 *
202 * @param p_scheme the URI scheme (cannot be null or empty)
203 * @param p_schemeSpecificPart the scheme-specific part (cannot be
204 * null or empty)
205 *
206 * @throws MalformedURIException if p_scheme violates any
207 * syntax rules
208 */
209 public URI(String p_scheme, String p_schemeSpecificPart)
210 throws MalformedURIException
211 {
212
213 if (p_scheme == null || p_scheme.trim().length() == 0)
214 {
215 throw new MalformedURIException(
216 "Cannot construct URI with null/empty scheme!");
217 }
218
219 if (p_schemeSpecificPart == null
220 || p_schemeSpecificPart.trim().length() == 0)
221 {
222 throw new MalformedURIException(
223 "Cannot construct URI with null/empty scheme-specific part!");
224 }
225
226 setScheme(p_scheme);
227 setPath(p_schemeSpecificPart);
228 }
229
230 /**
231 * Construct a new URI that follows the generic URI syntax from its
232 * component parts. Each component is validated for syntax and some
233 * basic semantic checks are performed as well. See the individual
234 * setter methods for specifics.
235 *
236 * @param p_scheme the URI scheme (cannot be null or empty)
237 * @param p_host the hostname or IPv4 address for the URI
238 * @param p_path the URI path - if the path contains '?' or '#',
239 * then the query string and/or fragment will be
240 * set from the path; however, if the query and
241 * fragment are specified both in the path and as
242 * separate parameters, an exception is thrown
243 * @param p_queryString the URI query string (cannot be specified
244 * if path is null)
245 * @param p_fragment the URI fragment (cannot be specified if path
246 * is null)
247 *
248 * @throws MalformedURIException if any of the parameters violates
249 * syntax rules or semantic rules
250 */
251 public URI(String p_scheme, String p_host, String p_path, String p_queryString, String p_fragment)
252 throws MalformedURIException
253 {
254 this(p_scheme, null, p_host, -1, p_path, p_queryString, p_fragment);
255 }
256
257 /**
258 * Construct a new URI that follows the generic URI syntax from its
259 * component parts. Each component is validated for syntax and some
260 * basic semantic checks are performed as well. See the individual
261 * setter methods for specifics.
262 *
263 * @param p_scheme the URI scheme (cannot be null or empty)
264 * @param p_userinfo the URI userinfo (cannot be specified if host
265 * is null)
266 * @param p_host the hostname or IPv4 address for the URI
267 * @param p_port the URI port (may be -1 for "unspecified"; cannot
268 * be specified if host is null)
269 * @param p_path the URI path - if the path contains '?' or '#',
270 * then the query string and/or fragment will be
271 * set from the path; however, if the query and
272 * fragment are specified both in the path and as
273 * separate parameters, an exception is thrown
274 * @param p_queryString the URI query string (cannot be specified
275 * if path is null)
276 * @param p_fragment the URI fragment (cannot be specified if path
277 * is null)
278 *
279 * @throws MalformedURIException if any of the parameters violates
280 * syntax rules or semantic rules
281 */
282 public URI(String p_scheme, String p_userinfo, String p_host, int p_port, String p_path, String p_queryString, String p_fragment)
283 throws MalformedURIException
284 {
285
286 if (p_scheme == null || p_scheme.trim().length() == 0)
287 {
288 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_SCHEME_REQUIRED, null)); //"Scheme is required!");
289 }
290
291 if (p_host == null)
292 {
293 if (p_userinfo != null)
294 {
295 throw new MalformedURIException(
296 XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_USERINFO_IF_NO_HOST, null)); //"Userinfo may not be specified if host is not specified!");
297 }
298
299 if (p_port != -1)
300 {
301 throw new MalformedURIException(
302 XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_PORT_IF_NO_HOST, null)); //"Port may not be specified if host is not specified!");
303 }
304 }
305
306 if (p_path != null)
307 {
308 if (p_path.indexOf('?') != -1 && p_queryString != null)
309 {
310 throw new MalformedURIException(
311 XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_QUERY_STRING_IN_PATH, null)); //"Query string cannot be specified in path and query string!");
312 }
313
314 if (p_path.indexOf('#') != -1 && p_fragment != null)
315 {
316 throw new MalformedURIException(
317 XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_FRAGMENT_STRING_IN_PATH, null)); //"Fragment cannot be specified in both the path and fragment!");
318 }
319 }
320
321 setScheme(p_scheme);
322 setHost(p_host);
323 setPort(p_port);
324 setUserinfo(p_userinfo);
325 setPath(p_path);
326 setQueryString(p_queryString);
327 setFragment(p_fragment);
328 }
329
330 /**
331 * Initialize all fields of this URI from another URI.
332 *
333 * @param p_other the URI to copy (cannot be null)
334 */
335 private void initialize(URI p_other)
336 {
337
338 m_scheme = p_other.getScheme();
339 m_userinfo = p_other.getUserinfo();
340 m_host = p_other.getHost();
341 m_port = p_other.getPort();
342 m_path = p_other.getPath();
343 m_queryString = p_other.getQueryString();
344 m_fragment = p_other.getFragment();
345 }
346
347 /**
348 * Initializes this URI from a base URI and a URI specification string.
349 * See RFC 2396 Section 4 and Appendix B for specifications on parsing
350 * the URI and Section 5 for specifications on resolving relative URIs
351 * and relative paths.
352 *
353 * @param p_base the base URI (may be null if p_uriSpec is an absolute
354 * URI)
355 * @param p_uriSpec the URI spec string which may be an absolute or
356 * relative URI (can only be null/empty if p_base
357 * is not null)
358 *
359 * @throws MalformedURIException if p_base is null and p_uriSpec
360 * is not an absolute URI or if
361 * p_uriSpec violates syntax rules
362 */
363 private void initialize(URI p_base, String p_uriSpec)
364 throws MalformedURIException
365 {
366
367 if (p_base == null
368 && (p_uriSpec == null || p_uriSpec.trim().length() == 0))
369 {
370 throw new MalformedURIException(
371 XMLMessages.createXMLMessage(XMLErrorResources.ER_CANNOT_INIT_URI_EMPTY_PARMS, null)); //"Cannot initialize URI with empty parameters.");
372 }
373
374 // just make a copy of the base if spec is empty
375 if (p_uriSpec == null || p_uriSpec.trim().length() == 0)
376 {
377 initialize(p_base);
378
379 return;
380 }
381
382 String uriSpec = p_uriSpec.trim();
383 int uriSpecLen = uriSpec.length();
384 int index = 0;
385
386 // check for scheme
387 int colonIndex = uriSpec.indexOf(':');
388 if (colonIndex < 0)
389 {
390 if (p_base == null)
391 {
392 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_SCHEME_IN_URI, new Object[]{uriSpec})); //"No scheme found in URI: "+uriSpec);
393 }
394 }
395 else
396 {
397 initializeScheme(uriSpec);
398 uriSpec = uriSpec.substring(colonIndex+1);
399 // This is a fix for XALANJ-2059.
400 if(m_scheme != null && p_base != null)
401 {
402 // a) If <uriSpec> starts with a slash (/), it means <uriSpec> is absolute
403 // and p_base can be ignored.
404 // For example,
405 // uriSpec = file:/myDIR/myXSLFile.xsl
406 // p_base = file:/myWork/
407 //
408 // Here, uriSpec has absolute path after scheme file and :
409 // Hence p_base can be ignored.
410 //
411 // b) Similarily, according to RFC 2396, uri is resolved for <uriSpec> relative to <p_base>
412 // if scheme in <uriSpec> is same as scheme in <p_base>, else p_base can be ignored.
413 //
414 // c) if <p_base> is not hierarchical, it can be ignored.
415 //
416 if(uriSpec.startsWith("/") || !m_scheme.equals(p_base.m_scheme) || !p_base.getSchemeSpecificPart().startsWith("/"))
417 {
418 p_base = null;
419 }
420 }
421 // Fix for XALANJ-2059
422 uriSpecLen = uriSpec.length();
423 }
424
425 // two slashes means generic URI syntax, so we get the authority
426 if (((index + 1) < uriSpecLen)
427 && (uriSpec.substring(index).startsWith("//")))
428 {
429 index += 2;
430
431 int startPos = index;
432
433 // get authority - everything up to path, query or fragment
434 char testChar = '\0';
435
436 while (index < uriSpecLen)
437 {
438 testChar = uriSpec.charAt(index);
439
440 if (testChar == '/' || testChar == '?' || testChar == '#')
441 {
442 break;
443 }
444
445 index++;
446 }
447
448 // if we found authority, parse it out, otherwise we set the
449 // host to empty string
450 if (index > startPos)
451 {
452 initializeAuthority(uriSpec.substring(startPos, index));
453 }
454 else
455 {
456 m_host = "";
457 }
458 }
459
460 initializePath(uriSpec.substring(index));
461
462 // Resolve relative URI to base URI - see RFC 2396 Section 5.2
463 // In some cases, it might make more sense to throw an exception
464 // (when scheme is specified is the string spec and the base URI
465 // is also specified, for example), but we're just following the
466 // RFC specifications
467 if (p_base != null)
468 {
469
470 // check to see if this is the current doc - RFC 2396 5.2 #2
471 // note that this is slightly different from the RFC spec in that
472 // we don't include the check for query string being null
473 // - this handles cases where the urispec is just a query
474 // string or a fragment (e.g. "?y" or "#s") -
475 // see <http://www.ics.uci.edu/~fielding/url/test1.html> which
476 // identified this as a bug in the RFC
477 if (m_path.length() == 0 && m_scheme == null && m_host == null)
478 {
479 m_scheme = p_base.getScheme();
480 m_userinfo = p_base.getUserinfo();
481 m_host = p_base.getHost();
482 m_port = p_base.getPort();
483 m_path = p_base.getPath();
484
485 if (m_queryString == null)
486 {
487 m_queryString = p_base.getQueryString();
488 }
489
490 return;
491 }
492
493 // check for scheme - RFC 2396 5.2 #3
494 // if we found a scheme, it means absolute URI, so we're done
495 if (m_scheme == null)
496 {
497 m_scheme = p_base.getScheme();
498 }
499
500 // check for authority - RFC 2396 5.2 #4
501 // if we found a host, then we've got a network path, so we're done
502 if (m_host == null)
503 {
504 m_userinfo = p_base.getUserinfo();
505 m_host = p_base.getHost();
506 m_port = p_base.getPort();
507 }
508 else
509 {
510 return;
511 }
512
513 // check for absolute path - RFC 2396 5.2 #5
514 if (m_path.length() > 0 && m_path.startsWith("/"))
515 {
516 return;
517 }
518
519 // if we get to this point, we need to resolve relative path
520 // RFC 2396 5.2 #6
521 String path = new String();
522 String basePath = p_base.getPath();
523
524 // 6a - get all but the last segment of the base URI path
525 if (basePath != null)
526 {
527 int lastSlash = basePath.lastIndexOf('/');
528
529 if (lastSlash != -1)
530 {
531 path = basePath.substring(0, lastSlash + 1);
532 }
533 }
534
535 // 6b - append the relative URI path
536 path = path.concat(m_path);
537
538 // 6c - remove all "./" where "." is a complete path segment
539 index = -1;
540
541 while ((index = path.indexOf("/./")) != -1)
542 {
543 path = path.substring(0, index + 1).concat(path.substring(index + 3));
544 }
545
546 // 6d - remove "." if path ends with "." as a complete path segment
547 if (path.endsWith("/."))
548 {
549 path = path.substring(0, path.length() - 1);
550 }
551
552 // 6e - remove all "<segment>/../" where "<segment>" is a complete
553 // path segment not equal to ".."
554 index = -1;
555
556 int segIndex = -1;
557 String tempString = null;
558
559 while ((index = path.indexOf("/../")) > 0)
560 {
561 tempString = path.substring(0, path.indexOf("/../"));
562 segIndex = tempString.lastIndexOf('/');
563
564 if (segIndex != -1)
565 {
566 if (!tempString.substring(segIndex++).equals(".."))
567 {
568 path = path.substring(0, segIndex).concat(path.substring(index
569 + 4));
570 }
571 }
572 }
573
574 // 6f - remove ending "<segment>/.." where "<segment>" is a
575 // complete path segment
576 if (path.endsWith("/.."))
577 {
578 tempString = path.substring(0, path.length() - 3);
579 segIndex = tempString.lastIndexOf('/');
580
581 if (segIndex != -1)
582 {
583 path = path.substring(0, segIndex + 1);
584 }
585 }
586
587 m_path = path;
588 }
589 }
590
591 /**
592 * Initialize the scheme for this URI from a URI string spec.
593 *
594 * @param p_uriSpec the URI specification (cannot be null)
595 *
596 * @throws MalformedURIException if URI does not have a conformant
597 * scheme
598 */
599 private void initializeScheme(String p_uriSpec) throws MalformedURIException
600 {
601
602 int uriSpecLen = p_uriSpec.length();
603 int index = 0;
604 String scheme = null;
605 char testChar = '\0';
606
607 while (index < uriSpecLen)
608 {
609 testChar = p_uriSpec.charAt(index);
610
611 if (testChar == ':' || testChar == '/' || testChar == '?'
612 || testChar == '#')
613 {
614 break;
615 }
616
617 index++;
618 }
619
620 scheme = p_uriSpec.substring(0, index);
621
622 if (scheme.length() == 0)
623 {
624 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_NO_SCHEME_INURI, null)); //"No scheme found in URI.");
625 }
626 else
627 {
628 setScheme(scheme);
629 }
630 }
631
632 /**
633 * Initialize the authority (userinfo, host and port) for this
634 * URI from a URI string spec.
635 *
636 * @param p_uriSpec the URI specification (cannot be null)
637 *
638 * @throws MalformedURIException if p_uriSpec violates syntax rules
639 */
640 private void initializeAuthority(String p_uriSpec)
641 throws MalformedURIException
642 {
643
644 int index = 0;
645 int start = 0;
646 int end = p_uriSpec.length();
647 char testChar = '\0';
648 String userinfo = null;
649
650 // userinfo is everything up @
651 if (p_uriSpec.indexOf('@', start) != -1)
652 {
653 while (index < end)
654 {
655 testChar = p_uriSpec.charAt(index);
656
657 if (testChar == '@')
658 {
659 break;
660 }
661
662 index++;
663 }
664
665 userinfo = p_uriSpec.substring(start, index);
666
667 index++;
668 }
669
670 // host is everything up to ':'
671 String host = null;
672
673 start = index;
674
675 while (index < end)
676 {
677 testChar = p_uriSpec.charAt(index);
678
679 if (testChar == ':')
680 {
681 break;
682 }
683
684 index++;
685 }
686
687 host = p_uriSpec.substring(start, index);
688
689 int port = -1;
690
691 if (host.length() > 0)
692 {
693
694 // port
695 if (testChar == ':')
696 {
697 index++;
698
699 start = index;
700
701 while (index < end)
702 {
703 index++;
704 }
705
706 String portStr = p_uriSpec.substring(start, index);
707
708 if (portStr.length() > 0)
709 {
710 for (int i = 0; i < portStr.length(); i++)
711 {
712 if (!isDigit(portStr.charAt(i)))
713 {
714 throw new MalformedURIException(
715 portStr + " is invalid. Port should only contain digits!");
716 }
717 }
718
719 try
720 {
721 port = Integer.parseInt(portStr);
722 }
723 catch (NumberFormatException nfe)
724 {
725
726 // can't happen
727 }
728 }
729 }
730 }
731
732 setHost(host);
733 setPort(port);
734 setUserinfo(userinfo);
735 }
736
737 /**
738 * Initialize the path for this URI from a URI string spec.
739 *
740 * @param p_uriSpec the URI specification (cannot be null)
741 *
742 * @throws MalformedURIException if p_uriSpec violates syntax rules
743 */
744 private void initializePath(String p_uriSpec) throws MalformedURIException
745 {
746
747 if (p_uriSpec == null)
748 {
749 throw new MalformedURIException(
750 "Cannot initialize path from null string!");
751 }
752
753 int index = 0;
754 int start = 0;
755 int end = p_uriSpec.length();
756 char testChar = '\0';
757
758 // path - everything up to query string or fragment
759 while (index < end)
760 {
761 testChar = p_uriSpec.charAt(index);
762
763 if (testChar == '?' || testChar == '#')
764 {
765 break;
766 }
767
768 // check for valid escape sequence
769 if (testChar == '%')
770 {
771 if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
772 ||!isHex(p_uriSpec.charAt(index + 2)))
773 {
774 throw new MalformedURIException(
775 XMLMessages.createXMLMessage(XMLErrorResources.ER_PATH_CONTAINS_INVALID_ESCAPE_SEQUENCE, null)); //"Path contains invalid escape sequence!");
776 }
777 }
778 else if (!isReservedCharacter(testChar)
779 &&!isUnreservedCharacter(testChar))
780 {
781 if ('\\' != testChar)
782 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_PATH_INVALID_CHAR, new Object[]{String.valueOf(testChar)})); //"Path contains invalid character: "
783 //+ testChar);
784 }
785
786 index++;
787 }
788
789 m_path = p_uriSpec.substring(start, index);
790
791 // query - starts with ? and up to fragment or end
792 if (testChar == '?')
793 {
794 index++;
795
796 start = index;
797
798 while (index < end)
799 {
800 testChar = p_uriSpec.charAt(index);
801
802 if (testChar == '#')
803 {
804 break;
805 }
806
807 if (testChar == '%')
808 {
809 if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
810 ||!isHex(p_uriSpec.charAt(index + 2)))
811 {
812 throw new MalformedURIException(
813 "Query string contains invalid escape sequence!");
814 }
815 }
816 else if (!isReservedCharacter(testChar)
817 &&!isUnreservedCharacter(testChar))
818 {
819 throw new MalformedURIException(
820 "Query string contains invalid character:" + testChar);
821 }
822
823 index++;
824 }
825
826 m_queryString = p_uriSpec.substring(start, index);
827 }
828
829 // fragment - starts with #
830 if (testChar == '#')
831 {
832 index++;
833
834 start = index;
835
836 while (index < end)
837 {
838 testChar = p_uriSpec.charAt(index);
839
840 if (testChar == '%')
841 {
842 if (index + 2 >= end ||!isHex(p_uriSpec.charAt(index + 1))
843 ||!isHex(p_uriSpec.charAt(index + 2)))
844 {
845 throw new MalformedURIException(
846 "Fragment contains invalid escape sequence!");
847 }
848 }
849 else if (!isReservedCharacter(testChar)
850 &&!isUnreservedCharacter(testChar))
851 {
852 throw new MalformedURIException(
853 "Fragment contains invalid character:" + testChar);
854 }
855
856 index++;
857 }
858
859 m_fragment = p_uriSpec.substring(start, index);
860 }
861 }
862
863 /**
864 * Get the scheme for this URI.
865 *
866 * @return the scheme for this URI
867 */
868 public String getScheme()
869 {
870 return m_scheme;
871 }
872
873 /**
874 * Get the scheme-specific part for this URI (everything following the
875 * scheme and the first colon). See RFC 2396 Section 5.2 for spec.
876 *
877 * @return the scheme-specific part for this URI
878 */
879 public String getSchemeSpecificPart()
880 {
881
882 StringBuffer schemespec = new StringBuffer();
883
884 if (m_userinfo != null || m_host != null || m_port != -1)
885 {
886 schemespec.append("//");
887 }
888
889 if (m_userinfo != null)
890 {
891 schemespec.append(m_userinfo);
892 schemespec.append('@');
893 }
894
895 if (m_host != null)
896 {
897 schemespec.append(m_host);
898 }
899
900 if (m_port != -1)
901 {
902 schemespec.append(':');
903 schemespec.append(m_port);
904 }
905
906 if (m_path != null)
907 {
908 schemespec.append((m_path));
909 }
910
911 if (m_queryString != null)
912 {
913 schemespec.append('?');
914 schemespec.append(m_queryString);
915 }
916
917 if (m_fragment != null)
918 {
919 schemespec.append('#');
920 schemespec.append(m_fragment);
921 }
922
923 return schemespec.toString();
924 }
925
926 /**
927 * Get the userinfo for this URI.
928 *
929 * @return the userinfo for this URI (null if not specified).
930 */
931 public String getUserinfo()
932 {
933 return m_userinfo;
934 }
935
936 /**
937 * Get the host for this URI.
938 *
939 * @return the host for this URI (null if not specified).
940 */
941 public String getHost()
942 {
943 return m_host;
944 }
945
946 /**
947 * Get the port for this URI.
948 *
949 * @return the port for this URI (-1 if not specified).
950 */
951 public int getPort()
952 {
953 return m_port;
954 }
955
956 /**
957 * Get the path for this URI (optionally with the query string and
958 * fragment).
959 *
960 * @param p_includeQueryString if true (and query string is not null),
961 * then a "?" followed by the query string
962 * will be appended
963 * @param p_includeFragment if true (and fragment is not null),
964 * then a "#" followed by the fragment
965 * will be appended
966 *
967 * @return the path for this URI possibly including the query string
968 * and fragment
969 */
970 public String getPath(boolean p_includeQueryString,
971 boolean p_includeFragment)
972 {
973
974 StringBuffer pathString = new StringBuffer(m_path);
975
976 if (p_includeQueryString && m_queryString != null)
977 {
978 pathString.append('?');
979 pathString.append(m_queryString);
980 }
981
982 if (p_includeFragment && m_fragment != null)
983 {
984 pathString.append('#');
985 pathString.append(m_fragment);
986 }
987
988 return pathString.toString();
989 }
990
991 /**
992 * Get the path for this URI. Note that the value returned is the path
993 * only and does not include the query string or fragment.
994 *
995 * @return the path for this URI.
996 */
997 public String getPath()
998 {
999 return m_path;
1000 }
1001
1002 /**
1003 * Get the query string for this URI.
1004 *
1005 * @return the query string for this URI. Null is returned if there
1006 * was no "?" in the URI spec, empty string if there was a
1007 * "?" but no query string following it.
1008 */
1009 public String getQueryString()
1010 {
1011 return m_queryString;
1012 }
1013
1014 /**
1015 * Get the fragment for this URI.
1016 *
1017 * @return the fragment for this URI. Null is returned if there
1018 * was no "#" in the URI spec, empty string if there was a
1019 * "#" but no fragment following it.
1020 */
1021 public String getFragment()
1022 {
1023 return m_fragment;
1024 }
1025
1026 /**
1027 * Set the scheme for this URI. The scheme is converted to lowercase
1028 * before it is set.
1029 *
1030 * @param p_scheme the scheme for this URI (cannot be null)
1031 *
1032 * @throws MalformedURIException if p_scheme is not a conformant
1033 * scheme name
1034 */
1035 public void setScheme(String p_scheme) throws MalformedURIException
1036 {
1037
1038 if (p_scheme == null)
1039 {
1040 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_SCHEME_FROM_NULL_STRING, null)); //"Cannot set scheme from null string!");
1041 }
1042
1043 if (!isConformantSchemeName(p_scheme))
1044 {
1045 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_SCHEME_NOT_CONFORMANT, null)); //"The scheme is not conformant.");
1046 }
1047
1048 m_scheme = p_scheme.toLowerCase();
1049 }
1050
1051 /**
1052 * Set the userinfo for this URI. If a non-null value is passed in and
1053 * the host value is null, then an exception is thrown.
1054 *
1055 * @param p_userinfo the userinfo for this URI
1056 *
1057 * @throws MalformedURIException if p_userinfo contains invalid
1058 * characters
1059 */
1060 public void setUserinfo(String p_userinfo) throws MalformedURIException
1061 {
1062
1063 if (p_userinfo == null)
1064 {
1065 m_userinfo = null;
1066 }
1067 else
1068 {
1069 if (m_host == null)
1070 {
1071 throw new MalformedURIException(
1072 "Userinfo cannot be set when host is null!");
1073 }
1074
1075 // userinfo can contain alphanumerics, mark characters, escaped
1076 // and ';',':','&','=','+','$',','
1077 int index = 0;
1078 int end = p_userinfo.length();
1079 char testChar = '\0';
1080
1081 while (index < end)
1082 {
1083 testChar = p_userinfo.charAt(index);
1084
1085 if (testChar == '%')
1086 {
1087 if (index + 2 >= end ||!isHex(p_userinfo.charAt(index + 1))
1088 ||!isHex(p_userinfo.charAt(index + 2)))
1089 {
1090 throw new MalformedURIException(
1091 "Userinfo contains invalid escape sequence!");
1092 }
1093 }
1094 else if (!isUnreservedCharacter(testChar)
1095 && USERINFO_CHARACTERS.indexOf(testChar) == -1)
1096 {
1097 throw new MalformedURIException(
1098 "Userinfo contains invalid character:" + testChar);
1099 }
1100
1101 index++;
1102 }
1103 }
1104
1105 m_userinfo = p_userinfo;
1106 }
1107
1108 /**
1109 * Set the host for this URI. If null is passed in, the userinfo
1110 * field is also set to null and the port is set to -1.
1111 *
1112 * @param p_host the host for this URI
1113 *
1114 * @throws MalformedURIException if p_host is not a valid IP
1115 * address or DNS hostname.
1116 */
1117 public void setHost(String p_host) throws MalformedURIException
1118 {
1119
1120 if (p_host == null || p_host.trim().length() == 0)
1121 {
1122 m_host = p_host;
1123 m_userinfo = null;
1124 m_port = -1;
1125 }
1126 else if (!isWellFormedAddress(p_host))
1127 {
1128 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_HOST_ADDRESS_NOT_WELLFORMED, null)); //"Host is not a well formed address!");
1129 }
1130
1131 m_host = p_host;
1132 }
1133
1134 /**
1135 * Set the port for this URI. -1 is used to indicate that the port is
1136 * not specified, otherwise valid port numbers are between 0 and 65535.
1137 * If a valid port number is passed in and the host field is null,
1138 * an exception is thrown.
1139 *
1140 * @param p_port the port number for this URI
1141 *
1142 * @throws MalformedURIException if p_port is not -1 and not a
1143 * valid port number
1144 */
1145 public void setPort(int p_port) throws MalformedURIException
1146 {
1147
1148 if (p_port >= 0 && p_port <= 65535)
1149 {
1150 if (m_host == null)
1151 {
1152 throw new MalformedURIException(
1153 XMLMessages.createXMLMessage(XMLErrorResources.ER_PORT_WHEN_HOST_NULL, null)); //"Port cannot be set when host is null!");
1154 }
1155 }
1156 else if (p_port != -1)
1157 {
1158 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_INVALID_PORT, null)); //"Invalid port number!");
1159 }
1160
1161 m_port = p_port;
1162 }
1163
1164 /**
1165 * Set the path for this URI. If the supplied path is null, then the
1166 * query string and fragment are set to null as well. If the supplied
1167 * path includes a query string and/or fragment, these fields will be
1168 * parsed and set as well. Note that, for URIs following the "generic
1169 * URI" syntax, the path specified should start with a slash.
1170 * For URIs that do not follow the generic URI syntax, this method
1171 * sets the scheme-specific part.
1172 *
1173 * @param p_path the path for this URI (may be null)
1174 *
1175 * @throws MalformedURIException if p_path contains invalid
1176 * characters
1177 */
1178 public void setPath(String p_path) throws MalformedURIException
1179 {
1180
1181 if (p_path == null)
1182 {
1183 m_path = null;
1184 m_queryString = null;
1185 m_fragment = null;
1186 }
1187 else
1188 {
1189 initializePath(p_path);
1190 }
1191 }
1192
1193 /**
1194 * Append to the end of the path of this URI. If the current path does
1195 * not end in a slash and the path to be appended does not begin with
1196 * a slash, a slash will be appended to the current path before the
1197 * new segment is added. Also, if the current path ends in a slash
1198 * and the new segment begins with a slash, the extra slash will be
1199 * removed before the new segment is appended.
1200 *
1201 * @param p_addToPath the new segment to be added to the current path
1202 *
1203 * @throws MalformedURIException if p_addToPath contains syntax
1204 * errors
1205 */
1206 public void appendPath(String p_addToPath) throws MalformedURIException
1207 {
1208
1209 if (p_addToPath == null || p_addToPath.trim().length() == 0)
1210 {
1211 return;
1212 }
1213
1214 if (!isURIString(p_addToPath))
1215 {
1216 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_PATH_INVALID_CHAR, new Object[]{p_addToPath})); //"Path contains invalid character!");
1217 }
1218
1219 if (m_path == null || m_path.trim().length() == 0)
1220 {
1221 if (p_addToPath.startsWith("/"))
1222 {
1223 m_path = p_addToPath;
1224 }
1225 else
1226 {
1227 m_path = "/" + p_addToPath;
1228 }
1229 }
1230 else if (m_path.endsWith("/"))
1231 {
1232 if (p_addToPath.startsWith("/"))
1233 {
1234 m_path = m_path.concat(p_addToPath.substring(1));
1235 }
1236 else
1237 {
1238 m_path = m_path.concat(p_addToPath);
1239 }
1240 }
1241 else
1242 {
1243 if (p_addToPath.startsWith("/"))
1244 {
1245 m_path = m_path.concat(p_addToPath);
1246 }
1247 else
1248 {
1249 m_path = m_path.concat("/" + p_addToPath);
1250 }
1251 }
1252 }
1253
1254 /**
1255 * Set the query string for this URI. A non-null value is valid only
1256 * if this is an URI conforming to the generic URI syntax and
1257 * the path value is not null.
1258 *
1259 * @param p_queryString the query string for this URI
1260 *
1261 * @throws MalformedURIException if p_queryString is not null and this
1262 * URI does not conform to the generic
1263 * URI syntax or if the path is null
1264 */
1265 public void setQueryString(String p_queryString)
1266 throws MalformedURIException
1267 {
1268
1269 if (p_queryString == null)
1270 {
1271 m_queryString = null;
1272 }
1273 else if (!isGenericURI())
1274 {
1275 throw new MalformedURIException(
1276 "Query string can only be set for a generic URI!");
1277 }
1278 else if (getPath() == null)
1279 {
1280 throw new MalformedURIException(
1281 "Query string cannot be set when path is null!");
1282 }
1283 else if (!isURIString(p_queryString))
1284 {
1285 throw new MalformedURIException(
1286 "Query string contains invalid character!");
1287 }
1288 else
1289 {
1290 m_queryString = p_queryString;
1291 }
1292 }
1293
1294 /**
1295 * Set the fragment for this URI. A non-null value is valid only
1296 * if this is a URI conforming to the generic URI syntax and
1297 * the path value is not null.
1298 *
1299 * @param p_fragment the fragment for this URI
1300 *
1301 * @throws MalformedURIException if p_fragment is not null and this
1302 * URI does not conform to the generic
1303 * URI syntax or if the path is null
1304 */
1305 public void setFragment(String p_fragment) throws MalformedURIException
1306 {
1307
1308 if (p_fragment == null)
1309 {
1310 m_fragment = null;
1311 }
1312 else if (!isGenericURI())
1313 {
1314 throw new MalformedURIException(
1315 XMLMessages.createXMLMessage(XMLErrorResources.ER_FRAG_FOR_GENERIC_URI, null)); //"Fragment can only be set for a generic URI!");
1316 }
1317 else if (getPath() == null)
1318 {
1319 throw new MalformedURIException(
1320 XMLMessages.createXMLMessage(XMLErrorResources.ER_FRAG_WHEN_PATH_NULL, null)); //"Fragment cannot be set when path is null!");
1321 }
1322 else if (!isURIString(p_fragment))
1323 {
1324 throw new MalformedURIException(XMLMessages.createXMLMessage(XMLErrorResources.ER_FRAG_INVALID_CHAR, null)); //"Fragment contains invalid character!");
1325 }
1326 else
1327 {
1328 m_fragment = p_fragment;
1329 }
1330 }
1331
1332 /**
1333 * Determines if the passed-in Object is equivalent to this URI.
1334 *
1335 * @param p_test the Object to test for equality.
1336 *
1337 * @return true if p_test is a URI with all values equal to this
1338 * URI, false otherwise
1339 */
1340 public boolean equals(Object p_test)
1341 {
1342
1343 if (p_test instanceof URI)
1344 {
1345 URI testURI = (URI) p_test;
1346
1347 if (((m_scheme == null && testURI.m_scheme == null) || (m_scheme != null && testURI.m_scheme != null && m_scheme.equals(
1348 testURI.m_scheme))) && ((m_userinfo == null && testURI.m_userinfo == null) || (m_userinfo != null && testURI.m_userinfo != null && m_userinfo.equals(
1349 testURI.m_userinfo))) && ((m_host == null && testURI.m_host == null) || (m_host != null && testURI.m_host != null && m_host.equals(
1350 testURI.m_host))) && m_port == testURI.m_port && ((m_path == null && testURI.m_path == null) || (m_path != null && testURI.m_path != null && m_path.equals(
1351 testURI.m_path))) && ((m_queryString == null && testURI.m_queryString == null) || (m_queryString != null && testURI.m_queryString != null && m_queryString.equals(
1352 testURI.m_queryString))) && ((m_fragment == null && testURI.m_fragment == null) || (m_fragment != null && testURI.m_fragment != null && m_fragment.equals(
1353 testURI.m_fragment))))
1354 {
1355 return true;
1356 }
1357 }
1358
1359 return false;
1360 }
1361
1362 /**
1363 * Get the URI as a string specification. See RFC 2396 Section 5.2.
1364 *
1365 * @return the URI string specification
1366 */
1367 public String toString()
1368 {
1369
1370 StringBuffer uriSpecString = new StringBuffer();
1371
1372 if (m_scheme != null)
1373 {
1374 uriSpecString.append(m_scheme);
1375 uriSpecString.append(':');
1376 }
1377
1378 uriSpecString.append(getSchemeSpecificPart());
1379
1380 return uriSpecString.toString();
1381 }
1382
1383 /**
1384 * Get the indicator as to whether this URI uses the "generic URI"
1385 * syntax.
1386 *
1387 * @return true if this URI uses the "generic URI" syntax, false
1388 * otherwise
1389 */
1390 public boolean isGenericURI()
1391 {
1392
1393 // presence of the host (whether valid or empty) means
1394 // double-slashes which means generic uri
1395 return (m_host != null);
1396 }
1397
1398 /**
1399 * Determine whether a scheme conforms to the rules for a scheme name.
1400 * A scheme is conformant if it starts with an alphanumeric, and
1401 * contains only alphanumerics, '+','-' and '.'.
1402 *
1403 *
1404 * @param p_scheme The sheme name to check
1405 * @return true if the scheme is conformant, false otherwise
1406 */
1407 public static boolean isConformantSchemeName(String p_scheme)
1408 {
1409
1410 if (p_scheme == null || p_scheme.trim().length() == 0)
1411 {
1412 return false;
1413 }
1414
1415 if (!isAlpha(p_scheme.charAt(0)))
1416 {
1417 return false;
1418 }
1419
1420 char testChar;
1421
1422 for (int i = 1; i < p_scheme.length(); i++)
1423 {
1424 testChar = p_scheme.charAt(i);
1425
1426 if (!isAlphanum(testChar) && SCHEME_CHARACTERS.indexOf(testChar) == -1)
1427 {
1428 return false;
1429 }
1430 }
1431
1432 return true;
1433 }
1434
1435 /**
1436 * Determine whether a string is syntactically capable of representing
1437 * a valid IPv4 address or the domain name of a network host. A valid
1438 * IPv4 address consists of four decimal digit groups separated by a
1439 * '.'. A hostname consists of domain labels (each of which must
1440 * begin and end with an alphanumeric but may contain '-') separated
1441 * & by a '.'. See RFC 2396 Section 3.2.2.
1442 *
1443 *
1444 * @param p_address The address string to check
1445 * @return true if the string is a syntactically valid IPv4 address
1446 * or hostname
1447 */
1448 public static boolean isWellFormedAddress(String p_address)
1449 {
1450
1451 if (p_address == null)
1452 {
1453 return false;
1454 }
1455
1456 String address = p_address.trim();
1457 int addrLength = address.length();
1458
1459 if (addrLength == 0 || addrLength > 255)
1460 {
1461 return false;
1462 }
1463
1464 if (address.startsWith(".") || address.startsWith("-"))
1465 {
1466 return false;
1467 }
1468
1469 // rightmost domain label starting with digit indicates IP address
1470 // since top level domain label can only start with an alpha
1471 // see RFC 2396 Section 3.2.2
1472 int index = address.lastIndexOf('.');
1473
1474 if (address.endsWith("."))
1475 {
1476 index = address.substring(0, index).lastIndexOf('.');
1477 }
1478
1479 if (index + 1 < addrLength && isDigit(p_address.charAt(index + 1)))
1480 {
1481 char testChar;
1482 int numDots = 0;
1483
1484 // make sure that 1) we see only digits and dot separators, 2) that
1485 // any dot separator is preceded and followed by a digit and
1486 // 3) that we find 3 dots
1487 for (int i = 0; i < addrLength; i++)
1488 {
1489 testChar = address.charAt(i);
1490
1491 if (testChar == '.')
1492 {
1493 if (!isDigit(address.charAt(i - 1))
1494 || (i + 1 < addrLength &&!isDigit(address.charAt(i + 1))))
1495 {
1496 return false;
1497 }
1498
1499 numDots++;
1500 }
1501 else if (!isDigit(testChar))
1502 {
1503 return false;
1504 }
1505 }
1506
1507 if (numDots != 3)
1508 {
1509 return false;
1510 }
1511 }
1512 else
1513 {
1514
1515 // domain labels can contain alphanumerics and '-"
1516 // but must start and end with an alphanumeric
1517 char testChar;
1518
1519 for (int i = 0; i < addrLength; i++)
1520 {
1521 testChar = address.charAt(i);
1522
1523 if (testChar == '.')
1524 {
1525 if (!isAlphanum(address.charAt(i - 1)))
1526 {
1527 return false;
1528 }
1529
1530 if (i + 1 < addrLength &&!isAlphanum(address.charAt(i + 1)))
1531 {
1532 return false;
1533 }
1534 }
1535 else if (!isAlphanum(testChar) && testChar != '-')
1536 {
1537 return false;
1538 }
1539 }
1540 }
1541
1542 return true;
1543 }
1544
1545 /**
1546 * Determine whether a char is a digit.
1547 *
1548 *
1549 * @param p_char the character to check
1550 * @return true if the char is betweeen '0' and '9', false otherwise
1551 */
1552 private static boolean isDigit(char p_char)
1553 {
1554 return p_char >= '0' && p_char <= '9';
1555 }
1556
1557 /**
1558 * Determine whether a character is a hexadecimal character.
1559 *
1560 *
1561 * @param p_char the character to check
1562 * @return true if the char is betweeen '0' and '9', 'a' and 'f'
1563 * or 'A' and 'F', false otherwise
1564 */
1565 private static boolean isHex(char p_char)
1566 {
1567 return (isDigit(p_char) || (p_char >= 'a' && p_char <= 'f')
1568 || (p_char >= 'A' && p_char <= 'F'));
1569 }
1570
1571 /**
1572 * Determine whether a char is an alphabetic character: a-z or A-Z
1573 *
1574 *
1575 * @param p_char the character to check
1576 * @return true if the char is alphabetic, false otherwise
1577 */
1578 private static boolean isAlpha(char p_char)
1579 {
1580 return ((p_char >= 'a' && p_char <= 'z')
1581 || (p_char >= 'A' && p_char <= 'Z'));
1582 }
1583
1584 /**
1585 * Determine whether a char is an alphanumeric: 0-9, a-z or A-Z
1586 *
1587 *
1588 * @param p_char the character to check
1589 * @return true if the char is alphanumeric, false otherwise
1590 */
1591 private static boolean isAlphanum(char p_char)
1592 {
1593 return (isAlpha(p_char) || isDigit(p_char));
1594 }
1595
1596 /**
1597 * Determine whether a character is a reserved character:
1598 * ';', '/', '?', ':', '@', '&', '=', '+', '$' or ','
1599 *
1600 *
1601 * @param p_char the character to check
1602 * @return true if the string contains any reserved characters
1603 */
1604 private static boolean isReservedCharacter(char p_char)
1605 {
1606 return RESERVED_CHARACTERS.indexOf(p_char) != -1;
1607 }
1608
1609 /**
1610 * Determine whether a char is an unreserved character.
1611 *
1612 *
1613 * @param p_char the character to check
1614 * @return true if the char is unreserved, false otherwise
1615 */
1616 private static boolean isUnreservedCharacter(char p_char)
1617 {
1618 return (isAlphanum(p_char) || MARK_CHARACTERS.indexOf(p_char) != -1);
1619 }
1620
1621 /**
1622 * Determine whether a given string contains only URI characters (also
1623 * called "uric" in RFC 2396). uric consist of all reserved
1624 * characters, unreserved characters and escaped characters.
1625 *
1626 *
1627 * @param p_uric URI string
1628 * @return true if the string is comprised of uric, false otherwise
1629 */
1630 private static boolean isURIString(String p_uric)
1631 {
1632
1633 if (p_uric == null)
1634 {
1635 return false;
1636 }
1637
1638 int end = p_uric.length();
1639 char testChar = '\0';
1640
1641 for (int i = 0; i < end; i++)
1642 {
1643 testChar = p_uric.charAt(i);
1644
1645 if (testChar == '%')
1646 {
1647 if (i + 2 >= end ||!isHex(p_uric.charAt(i + 1))
1648 ||!isHex(p_uric.charAt(i + 2)))
1649 {
1650 return false;
1651 }
1652 else
1653 {
1654 i += 2;
1655
1656 continue;
1657 }
1658 }
1659
1660 if (isReservedCharacter(testChar) || isUnreservedCharacter(testChar))
1661 {
1662 continue;
1663 }
1664 else
1665 {
1666 return false;
1667 }
1668 }
1669
1670 return true;
1671 }
1672}