001: /*
002: * Modified by Nabh Information Systems, Inc.
003: * Modifications (c) 2006 Nabh Information Systems, Inc.
004: *
005: */
006: /*
007: GNU LESSER GENERAL PUBLIC LICENSE
008: Version 2.1, February 1999
009:
010: Copyright (C) 1991, 1999 Free Software Foundation, Inc.
011: 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
012: Everyone is permitted to copy and distribute verbatim copies
013: of this license document, but changing it is not allowed.
014:
015: [This is the first released version of the Lesser GPL. It also counts
016: as the successor of the GNU Library Public License, version 2, hence
017: the version number 2.1.]
018:
019: Preamble
020:
021: The licenses for most software are designed to take away your
022: freedom to share and change it. By contrast, the GNU General Public
023: Licenses are intended to guarantee your freedom to share and change
024: free software--to make sure the software is free for all its users.
025:
026: This license, the Lesser General Public License, applies to some
027: specially designated software packages--typically libraries--of the
028: Free Software Foundation and other authors who decide to use it. You
029: can use it too, but we suggest you first think carefully about whether
030: this license or the ordinary General Public License is the better
031: strategy to use in any particular case, based on the explanations
032: below.
033:
034: When we speak of free software, we are referring to freedom of use,
035: not price. Our General Public Licenses are designed to make sure that
036: you have the freedom to distribute copies of free software (and charge
037: for this service if you wish); that you receive source code or can get
038: it if you want it; that you can change the software and use pieces of
039: it in new free programs; and that you are informed that you can do
040: these things.
041:
042: To protect your rights, we need to make restrictions that forbid
043: distributors to deny you these rights or to ask you to surrender these
044: rights. These restrictions translate to certain responsibilities for
045: you if you distribute copies of the library or if you modify it.
046:
047: For example, if you distribute copies of the library, whether gratis
048: or for a fee, you must give the recipients all the rights that we gave
049: you. You must make sure that they, too, receive or can get the source
050: code. If you link other code with the library, you must provide
051: complete object files to the recipients, so that they can relink them
052: with the library after making changes to the library and recompiling
053: it. And you must show them these terms so they know their rights.
054:
055: We protect your rights with a two-step method: (1) we copyright the
056: library, and (2) we offer you this license, which gives you legal
057: permission to copy, distribute and/or modify the library.
058:
059: To protect each distributor, we want to make it very clear that
060: there is no warranty for the free library. Also, if the library is
061: modified by someone else and passed on, the recipients should know
062: that what they have is not the original version, so that the original
063: author's reputation will not be affected by problems that might be
064: introduced by others.
065:
066: Finally, software patents pose a constant threat to the existence of
067: any free program. We wish to make sure that a company cannot
068: effectively restrict the users of a free program by obtaining a
069: restrictive license from a patent holder. Therefore, we insist that
070: any patent license obtained for a version of the library must be
071: consistent with the full freedom of use specified in this license.
072:
073: Most GNU software, including some libraries, is covered by the
074: ordinary GNU General Public License. This license, the GNU Lesser
075: General Public License, applies to certain designated libraries, and
076: is quite different from the ordinary General Public License. We use
077: this license for certain libraries in order to permit linking those
078: libraries into non-free programs.
079:
080: When a program is linked with a library, whether statically or using
081: a shared library, the combination of the two is legally speaking a
082: combined work, a derivative of the original library. The ordinary
083: General Public License therefore permits such linking only if the
084: entire combination fits its criteria of freedom. The Lesser General
085: Public License permits more lax criteria for linking other code with
086: the library.
087:
088: We call this license the "Lesser" General Public License because it
089: does Less to protect the user's freedom than the ordinary General
090: Public License. It also provides other free software developers Less
091: of an advantage over competing non-free programs. These disadvantages
092: are the reason we use the ordinary General Public License for many
093: libraries. However, the Lesser license provides advantages in certain
094: special circumstances.
095:
096: For example, on rare occasions, there may be a special need to
097: encourage the widest possible use of a certain library, so that it
098: becomes a de-facto standard. To achieve this, non-free programs must
099: be allowed to use the library. A more frequent case is that a free
100: library does the same job as widely used non-free libraries. In this
101: case, there is little to gain by limiting the free library to free
102: software only, so we use the Lesser General Public License.
103:
104: In other cases, permission to use a particular library in non-free
105: programs enables a greater number of people to use a large body of
106: free software. For example, permission to use the GNU C Library in
107: non-free programs enables many more people to use the whole GNU
108: operating system, as well as its variant, the GNU/Linux operating
109: system.
110:
111: Although the Lesser General Public License is Less protective of the
112: users' freedom, it does ensure that the user of a program that is
113: linked with the Library has the freedom and the wherewithal to run
114: that program using a modified version of the Library.
115:
116: The precise terms and conditions for copying, distribution and
117: modification follow. Pay close attention to the difference between a
118: "work based on the library" and a "work that uses the library". The
119: former contains code derived from the library, whereas the latter must
120: be combined with the library in order to run.
121:
122:
123: GNU LESSER GENERAL PUBLIC LICENSE
124: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
125:
126: 0. This License Agreement applies to any software library or other
127: program which contains a notice placed by the copyright holder or
128: other authorized party saying it may be distributed under the terms of
129: this Lesser General Public License (also called "this License").
130: Each licensee is addressed as "you".
131:
132: A "library" means a collection of software functions and/or data
133: prepared so as to be conveniently linked with application programs
134: (which use some of those functions and data) to form executables.
135:
136: The "Library", below, refers to any such software library or work
137: which has been distributed under these terms. A "work based on the
138: Library" means either the Library or any derivative work under
139: copyright law: that is to say, a work containing the Library or a
140: portion of it, either verbatim or with modifications and/or translated
141: straightforwardly into another language. (Hereinafter, translation is
142: included without limitation in the term "modification".)
143:
144: "Source code" for a work means the preferred form of the work for
145: making modifications to it. For a library, complete source code means
146: all the source code for all modules it contains, plus any associated
147: interface definition files, plus the scripts used to control
148: compilation and installation of the library.
149:
150: Activities other than copying, distribution and modification are not
151: covered by this License; they are outside its scope. The act of
152: running a program using the Library is not restricted, and output from
153: such a program is covered only if its contents constitute a work based
154: on the Library (independent of the use of the Library in a tool for
155: writing it). Whether that is true depends on what the Library does
156: and what the program that uses the Library does.
157:
158: 1. You may copy and distribute verbatim copies of the Library's
159: complete source code as you receive it, in any medium, provided that
160: you conspicuously and appropriately publish on each copy an
161: appropriate copyright notice and disclaimer of warranty; keep intact
162: all the notices that refer to this License and to the absence of any
163: warranty; and distribute a copy of this License along with the
164: Library.
165:
166: You may charge a fee for the physical act of transferring a copy,
167: and you may at your option offer warranty protection in exchange for a
168: fee.
169:
170: 2. You may modify your copy or copies of the Library or any portion
171: of it, thus forming a work based on the Library, and copy and
172: distribute such modifications or work under the terms of Section 1
173: above, provided that you also meet all of these conditions:
174:
175: a) The modified work must itself be a software library.
176:
177: b) You must cause the files modified to carry prominent notices
178: stating that you changed the files and the date of any change.
179:
180: c) You must cause the whole of the work to be licensed at no
181: charge to all third parties under the terms of this License.
182:
183: d) If a facility in the modified Library refers to a function or a
184: table of data to be supplied by an application program that uses
185: the facility, other than as an argument passed when the facility
186: is invoked, then you must make a good faith effort to ensure that,
187: in the event an application does not supply such function or
188: table, the facility still operates, and performs whatever part of
189: its purpose remains meaningful.
190:
191: (For example, a function in a library to compute square roots has
192: a purpose that is entirely well-defined independent of the
193: application. Therefore, Subsection 2d requires that any
194: application-supplied function or table used by this function must
195: be optional: if the application does not supply it, the square
196: root function must still compute square roots.)
197:
198: These requirements apply to the modified work as a whole. If
199: identifiable sections of that work are not derived from the Library,
200: and can be reasonably considered independent and separate works in
201: themselves, then this License, and its terms, do not apply to those
202: sections when you distribute them as separate works. But when you
203: distribute the same sections as part of a whole which is a work based
204: on the Library, the distribution of the whole must be on the terms of
205: this License, whose permissions for other licensees extend to the
206: entire whole, and thus to each and every part regardless of who wrote
207: it.
208:
209: Thus, it is not the intent of this section to claim rights or contest
210: your rights to work written entirely by you; rather, the intent is to
211: exercise the right to control the distribution of derivative or
212: collective works based on the Library.
213:
214: In addition, mere aggregation of another work not based on the Library
215: with the Library (or with a work based on the Library) on a volume of
216: a storage or distribution medium does not bring the other work under
217: the scope of this License.
218:
219: 3. You may opt to apply the terms of the ordinary GNU General Public
220: License instead of this License to a given copy of the Library. To do
221: this, you must alter all the notices that refer to this License, so
222: that they refer to the ordinary GNU General Public License, version 2,
223: instead of to this License. (If a newer version than version 2 of the
224: ordinary GNU General Public License has appeared, then you can specify
225: that version instead if you wish.) Do not make any other change in
226: these notices.
227:
228: Once this change is made in a given copy, it is irreversible for
229: that copy, so the ordinary GNU General Public License applies to all
230: subsequent copies and derivative works made from that copy.
231:
232: This option is useful when you wish to copy part of the code of
233: the Library into a program that is not a library.
234:
235: 4. You may copy and distribute the Library (or a portion or
236: derivative of it, under Section 2) in object code or executable form
237: under the terms of Sections 1 and 2 above provided that you accompany
238: it with the complete corresponding machine-readable source code, which
239: must be distributed under the terms of Sections 1 and 2 above on a
240: medium customarily used for software interchange.
241:
242: If distribution of object code is made by offering access to copy
243: from a designated place, then offering equivalent access to copy the
244: source code from the same place satisfies the requirement to
245: distribute the source code, even though third parties are not
246: compelled to copy the source along with the object code.
247:
248: 5. A program that contains no derivative of any portion of the
249: Library, but is designed to work with the Library by being compiled or
250: linked with it, is called a "work that uses the Library". Such a
251: work, in isolation, is not a derivative work of the Library, and
252: therefore falls outside the scope of this License.
253:
254: However, linking a "work that uses the Library" with the Library
255: creates an executable that is a derivative of the Library (because it
256: contains portions of the Library), rather than a "work that uses the
257: library". The executable is therefore covered by this License.
258: Section 6 states terms for distribution of such executables.
259:
260: When a "work that uses the Library" uses material from a header file
261: that is part of the Library, the object code for the work may be a
262: derivative work of the Library even though the source code is not.
263: Whether this is true is especially significant if the work can be
264: linked without the Library, or if the work is itself a library. The
265: threshold for this to be true is not precisely defined by law.
266:
267: If such an object file uses only numerical parameters, data
268: structure layouts and accessors, and small macros and small inline
269: functions (ten lines or less in length), then the use of the object
270: file is unrestricted, regardless of whether it is legally a derivative
271: work. (Executables containing this object code plus portions of the
272: Library will still fall under Section 6.)
273:
274: Otherwise, if the work is a derivative of the Library, you may
275: distribute the object code for the work under the terms of Section 6.
276: Any executables containing that work also fall under Section 6,
277: whether or not they are linked directly with the Library itself.
278:
279: 6. As an exception to the Sections above, you may also combine or
280: link a "work that uses the Library" with the Library to produce a
281: work containing portions of the Library, and distribute that work
282: under terms of your choice, provided that the terms permit
283: modification of the work for the customer's own use and reverse
284: engineering for debugging such modifications.
285:
286: You must give prominent notice with each copy of the work that the
287: Library is used in it and that the Library and its use are covered by
288: this License. You must supply a copy of this License. If the work
289: during execution displays copyright notices, you must include the
290: copyright notice for the Library among them, as well as a reference
291: directing the user to the copy of this License. Also, you must do one
292: of these things:
293:
294: a) Accompany the work with the complete corresponding
295: machine-readable source code for the Library including whatever
296: changes were used in the work (which must be distributed under
297: Sections 1 and 2 above); and, if the work is an executable linked
298: with the Library, with the complete machine-readable "work that
299: uses the Library", as object code and/or source code, so that the
300: user can modify the Library and then relink to produce a modified
301: executable containing the modified Library. (It is understood
302: that the user who changes the contents of definitions files in the
303: Library will not necessarily be able to recompile the application
304: to use the modified definitions.)
305:
306: b) Use a suitable shared library mechanism for linking with the
307: Library. A suitable mechanism is one that (1) uses at run time a
308: copy of the library already present on the user's computer system,
309: rather than copying library functions into the executable, and (2)
310: will operate properly with a modified version of the library, if
311: the user installs one, as long as the modified version is
312: interface-compatible with the version that the work was made with.
313:
314: c) Accompany the work with a written offer, valid for at least
315: three years, to give the same user the materials specified in
316: Subsection 6a, above, for a charge no more than the cost of
317: performing this distribution.
318:
319: d) If distribution of the work is made by offering access to copy
320: from a designated place, offer equivalent access to copy the above
321: specified materials from the same place.
322:
323: e) Verify that the user has already received a copy of these
324: materials or that you have already sent this user a copy.
325:
326: For an executable, the required form of the "work that uses the
327: Library" must include any data and utility programs needed for
328: reproducing the executable from it. However, as a special exception,
329: the materials to be distributed need not include anything that is
330: normally distributed (in either source or binary form) with the major
331: components (compiler, kernel, and so on) of the operating system on
332: which the executable runs, unless that component itself accompanies
333: the executable.
334:
335: It may happen that this requirement contradicts the license
336: restrictions of other proprietary libraries that do not normally
337: accompany the operating system. Such a contradiction means you cannot
338: use both them and the Library together in an executable that you
339: distribute.
340:
341: 7. You may place library facilities that are a work based on the
342: Library side-by-side in a single library together with other library
343: facilities not covered by this License, and distribute such a combined
344: library, provided that the separate distribution of the work based on
345: the Library and of the other library facilities is otherwise
346: permitted, and provided that you do these two things:
347:
348: a) Accompany the combined library with a copy of the same work
349: based on the Library, uncombined with any other library
350: facilities. This must be distributed under the terms of the
351: Sections above.
352:
353: b) Give prominent notice with the combined library of the fact
354: that part of it is a work based on the Library, and explaining
355: where to find the accompanying uncombined form of the same work.
356:
357: 8. You may not copy, modify, sublicense, link with, or distribute
358: the Library except as expressly provided under this License. Any
359: attempt otherwise to copy, modify, sublicense, link with, or
360: distribute the Library is void, and will automatically terminate your
361: rights under this License. However, parties who have received copies,
362: or rights, from you under this License will not have their licenses
363: terminated so long as such parties remain in full compliance.
364:
365: 9. You are not required to accept this License, since you have not
366: signed it. However, nothing else grants you permission to modify or
367: distribute the Library or its derivative works. These actions are
368: prohibited by law if you do not accept this License. Therefore, by
369: modifying or distributing the Library (or any work based on the
370: Library), you indicate your acceptance of this License to do so, and
371: all its terms and conditions for copying, distributing or modifying
372: the Library or works based on it.
373:
374: 10. Each time you redistribute the Library (or any work based on the
375: Library), the recipient automatically receives a license from the
376: original licensor to copy, distribute, link with or modify the Library
377: subject to these terms and conditions. You may not impose any further
378: restrictions on the recipients' exercise of the rights granted herein.
379: You are not responsible for enforcing compliance by third parties with
380: this License.
381:
382: 11. If, as a consequence of a court judgment or allegation of patent
383: infringement or for any other reason (not limited to patent issues),
384: conditions are imposed on you (whether by court order, agreement or
385: otherwise) that contradict the conditions of this License, they do not
386: excuse you from the conditions of this License. If you cannot
387: distribute so as to satisfy simultaneously your obligations under this
388: License and any other pertinent obligations, then as a consequence you
389: may not distribute the Library at all. For example, if a patent
390: license would not permit royalty-free redistribution of the Library by
391: all those who receive copies directly or indirectly through you, then
392: the only way you could satisfy both it and this License would be to
393: refrain entirely from distribution of the Library.
394:
395: If any portion of this section is held invalid or unenforceable under
396: any particular circumstance, the balance of the section is intended to
397: apply, and the section as a whole is intended to apply in other
398: circumstances.
399:
400: It is not the purpose of this section to induce you to infringe any
401: patents or other property right claims or to contest validity of any
402: such claims; this section has the sole purpose of protecting the
403: integrity of the free software distribution system which is
404: implemented by public license practices. Many people have made
405: generous contributions to the wide range of software distributed
406: through that system in reliance on consistent application of that
407: system; it is up to the author/donor to decide if he or she is willing
408: to distribute software through any other system and a licensee cannot
409: impose that choice.
410:
411: This section is intended to make thoroughly clear what is believed to
412: be a consequence of the rest of this License.
413:
414: 12. If the distribution and/or use of the Library is restricted in
415: certain countries either by patents or by copyrighted interfaces, the
416: original copyright holder who places the Library under this License
417: may add an explicit geographical distribution limitation excluding those
418: countries, so that distribution is permitted only in or among
419: countries not thus excluded. In such case, this License incorporates
420: the limitation as if written in the body of this License.
421:
422: 13. The Free Software Foundation may publish revised and/or new
423: versions of the Lesser General Public License from time to time.
424: Such new versions will be similar in spirit to the present version,
425: but may differ in detail to address new problems or concerns.
426:
427: Each version is given a distinguishing version number. If the Library
428: specifies a version number of this License which applies to it and
429: "any later version", you have the option of following the terms and
430: conditions either of that version or of any later version published by
431: the Free Software Foundation. If the Library does not specify a
432: license version number, you may choose any version ever published by
433: the Free Software Foundation.
434:
435: 14. If you wish to incorporate parts of the Library into other free
436: programs whose distribution conditions are incompatible with these,
437: write to the author to ask for permission. For software which is
438: copyrighted by the Free Software Foundation, write to the Free
439: Software Foundation; we sometimes make exceptions for this. Our
440: decision will be guided by the two goals of preserving the free status
441: of all derivatives of our free software and of promoting the sharing
442: and reuse of software generally.
443:
444: NO WARRANTY
445:
446: 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
447: WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
448: EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
449: OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
450: KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
451: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
452: PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
453: LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
454: THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
455:
456: 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
457: WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
458: AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
459: FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
460: CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
461: LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
462: RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
463: FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
464: SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
465: DAMAGES.
466:
467: END OF TERMS AND CONDITIONS
468: */
469:
470: package com.nabhinc.util.jcaptcha;
471:
472: import com.octo.captcha.component.image.backgroundgenerator.BackgroundGenerator;
473: import com.octo.captcha.component.image.backgroundgenerator.UniColorBackgroundGenerator;
474: import com.octo.captcha.component.image.fontgenerator.FontGenerator;
475: import com.octo.captcha.component.image.fontgenerator.TwistedAndShearedRandomFontGenerator;
476: import com.octo.captcha.component.image.textpaster.RandomTextPaster;
477: import com.octo.captcha.component.image.textpaster.TextPaster;
478:
479: import java.awt.*;
480:
481: /**
482: * <p>Description: </p>
483: *
484: * @author <a href="mailto:mga@octo.com">Mathieu Gandin</a>
485: * @version 1.0
486: */
487: public class SimpleListImageCaptchaEngine extends
488: com.octo.captcha.engine.image.ListImageCaptchaEngine {
489:
490: protected void buildInitialFactories() {
491: com.octo.captcha.component.wordgenerator.WordGenerator wordGenerator = new com.octo.captcha.component.wordgenerator.RandomWordGenerator(
492: "ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789");
493: TextPaster textPaster = new RandomTextPaster(new Integer(6),
494: new Integer(7), Color.black);
495: BackgroundGenerator backgroundGenerator = new UniColorBackgroundGenerator(
496: new Integer(140), new Integer(50), Color.white);
497: FontGenerator fontGenerator = new TwistedAndShearedRandomFontGenerator(
498: new Integer(20), new Integer(25));
499: com.octo.captcha.component.image.wordtoimage.WordToImage wordToImage = new com.octo.captcha.component.image.wordtoimage.ComposedWordToImage(
500: fontGenerator, backgroundGenerator, textPaster);
501: this .addFactory(new GimpyFactory(wordGenerator, wordToImage));
502: }
503:
504: }
|