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1| Preliminary notes:   
2  
3| 1) The majority of code in the VirtualBox Open Source Edition (OSE) is   
4| copyrighted by Oracle Corporation. This code is combined with third-party code   
5| that was originally released under licenses which the Free Software Foundation   
6| considers incompatible with the GPL, such as the Apache License 2.0, the OpenSSL   
7| license, the Mozilla Public License (MPL) and the Slirp license. (Please see the   
8| VirtualBox User Manual for a complete list of third-party code and their   
9| licenses.) As a special exception to the terms and conditions of the GPL listed   
10| below, Oracle gives you explicit permission to combine its GPL code contained in   
11| VirtualBox OSE with third-party code under the aforementioned licenses. You may   
12| copy and distribute such a combination provided that you adhere to the terms and   
13| conditions of all of the GPL and the licenses of the third-party code; in   
14| particular, you must include the source code of the entire combination insofar   
15| as the GPL requires distribution of source code.   
16  
17| 2) The GPL listed below does not bind software which uses VirtualBox services by   
18| merely linking to VirtualBox libraries so long as all VirtualBox interfaces used   
19| by that software are multi-licensed. A VirtualBox interface is deemed   
20| multi-licensed if it is declared in a VirtualBox header file that is licensed   
21| under both the GPL version 2 (below) *and* the Common Development and   
22| Distribution License Version 1.0 (CDDL), as it comes in the "COPYING.CDDL" file.   
23| In other words, calling such a multi-licensed interface is merely considered   
24| normal use of VirtualBox and does not turn the calling code into a derived work   
25| of VirtualBox. In particular, this applies to code that wants to extend   
26| VirtualBox by way of the Extension Pack mechanism declared in the ExtPack.h   
27| header file.   
28  
29| 3) Whoever creates or distributes a derived work based on VirtualBox OSE is not   
30| obligated to grant the above exceptions for such a version. The GPL allows for   
31| releasing a modified version without the above exception; in addition, Oracle   
32| hereby also allows you to release a modified version which carries forward these   
33| exceptions.   
34  
35| Oracle Corporation   
36  
37| \---   
38  
39  
40|  GNU GENERAL PUBLIC LICENSE   
41|  Version 2, June 1991   
42  
43|  Copyright (C) 1989, 1991 Free Software Foundation, Inc.   
44|  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA   
45|  Everyone is permitted to copy and distribute verbatim copies   
46|  of this license document, but changing it is not allowed.   
47  
48|  Preamble   
49  
50|  The licenses for most software are designed to take away your   
51| freedom to share and change it. By contrast, the GNU General Public   
52| License is intended to guarantee your freedom to share and change free   
53| software--to make sure the software is free for all its users. This   
54| General Public License applies to most of the Free Software   
55| Foundation's software and to any other program whose authors commit to   
56| using it. (Some other Free Software Foundation software is covered by   
57| the GNU Library General Public License instead.) You can apply it to   
58| your programs, too.   
59  
60|  When we speak of free software, we are referring to freedom, not   
61| price. Our General Public Licenses are designed to make sure that you   
62| have the freedom to distribute copies of free software (and charge for   
63| this service if you wish), that you receive source code or can get it   
64| if you want it, that you can change the software or use pieces of it   
65| in new free programs; and that you know you can do these things.   
66  
67|  To protect your rights, we need to make restrictions that forbid   
68| anyone to deny you these rights or to ask you to surrender the rights.   
69| These restrictions translate to certain responsibilities for you if you   
70| distribute copies of the software, or if you modify it.   
71  
72|  For example, if you distribute copies of such a program, whether   
73| gratis or for a fee, you must give the recipients all the rights that   
74| you have. You must make sure that they, too, receive or can get the   
75| source code. And you must show them these terms so they know their   
76| rights.   
77  
78|  We protect your rights with two steps: (1) copyright the software, and   
79| (2) offer you this license which gives you legal permission to copy,   
80| distribute and/or modify the software.   
81  
82|  Also, for each author's protection and ours, we want to make certain   
83| that everyone understands that there is no warranty for this free   
84| software. If the software is modified by someone else and passed on, we   
85| want its recipients to know that what they have is not the original, so   
86| that any problems introduced by others will not reflect on the original   
87| authors' reputations.   
88  
89|  Finally, any free program is threatened constantly by software   
90| patents. We wish to avoid the danger that redistributors of a free   
91| program will individually obtain patent licenses, in effect making the   
92| program proprietary. To prevent this, we have made it clear that any   
93| patent must be licensed for everyone's free use or not licensed at all.   
94  
95|  The precise terms and conditions for copying, distribution and   
96| modification follow.   
97  
98|  GNU GENERAL PUBLIC LICENSE   
99|  TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION   
100  
101|  0\. This License applies to any program or other work which contains   
102| a notice placed by the copyright holder saying it may be distributed   
103| under the terms of this General Public License. The "Program", below,   
104| refers to any such program or work, and a "work based on the Program"   
105| means either the Program or any derivative work under copyright law:   
106| that is to say, a work containing the Program or a portion of it,   
107| either verbatim or with modifications and/or translated into another   
108| language. (Hereinafter, translation is included without limitation in   
109| the term "modification".) Each licensee is addressed as "you".   
110  
111| Activities other than copying, distribution and modification are not   
112| covered by this License; they are outside its scope. The act of   
113| running the Program is not restricted, and the output from the Program   
114| is covered only if its contents constitute a work based on the   
115| Program (independent of having been made by running the Program).   
116| Whether that is true depends on what the Program does.   
117  
118|  1\. You may copy and distribute verbatim copies of the Program's   
119| source code as you receive it, in any medium, provided that you   
120| conspicuously and appropriately publish on each copy an appropriate   
121| copyright notice and disclaimer of warranty; keep intact all the   
122| notices that refer to this License and to the absence of any warranty;   
123| and give any other recipients of the Program a copy of this License   
124| along with the Program.   
125  
126| You may charge a fee for the physical act of transferring a copy, and   
127| you may at your option offer warranty protection in exchange for a fee.   
128  
129|  2\. You may modify your copy or copies of the Program or any portion   
130| of it, thus forming a work based on the Program, and copy and   
131| distribute such modifications or work under the terms of Section 1   
132| above, provided that you also meet all of these conditions:   
133  
134|  a) You must cause the modified files to carry prominent notices   
135|  stating that you changed the files and the date of any change.   
136  
137|  b) You must cause any work that you distribute or publish, that in   
138|  whole or in part contains or is derived from the Program or any   
139|  part thereof, to be licensed as a whole at no charge to all third   
140|  parties under the terms of this License.   
141  
142|  c) If the modified program normally reads commands interactively   
143|  when run, you must cause it, when started running for such   
144|  interactive use in the most ordinary way, to print or display an   
145|  announcement including an appropriate copyright notice and a   
146|  notice that there is no warranty (or else, saying that you provide   
147|  a warranty) and that users may redistribute the program under   
148|  these conditions, and telling the user how to view a copy of this   
149|  License. (Exception: if the Program itself is interactive but   
150|  does not normally print such an announcement, your work based on   
151|  the Program is not required to print an announcement.)   
152  
153| These requirements apply to the modified work as a whole. If   
154| identifiable sections of that work are not derived from the Program,   
155| and can be reasonably considered independent and separate works in   
156| themselves, then this License, and its terms, do not apply to those   
157| sections when you distribute them as separate works. But when you   
158| distribute the same sections as part of a whole which is a work based   
159| on the Program, the distribution of the whole must be on the terms of   
160| this License, whose permissions for other licensees extend to the   
161| entire whole, and thus to each and every part regardless of who wrote it.   
162  
163| Thus, it is not the intent of this section to claim rights or contest   
164| your rights to work written entirely by you; rather, the intent is to   
165| exercise the right to control the distribution of derivative or   
166| collective works based on the Program.   
167  
168| In addition, mere aggregation of another work not based on the Program   
169| with the Program (or with a work based on the Program) on a volume of   
170| a storage or distribution medium does not bring the other work under   
171| the scope of this License.   
172  
173|  3\. You may copy and distribute the Program (or a work based on it,   
174| under Section 2) in object code or executable form under the terms of   
175| Sections 1 and 2 above provided that you also do one of the following:   
176  
177|  a) Accompany it with the complete corresponding machine-readable   
178|  source code, which must be distributed under the terms of Sections   
179|  1 and 2 above on a medium customarily used for software interchange; or,   
180  
181|  b) Accompany it with a written offer, valid for at least three   
182|  years, to give any third party, for a charge no more than your   
183|  cost of physically performing source distribution, a complete   
184|  machine-readable copy of the corresponding source code, to be   
185|  distributed under the terms of Sections 1 and 2 above on a medium   
186|  customarily used for software interchange; or,   
187  
188|  c) Accompany it with the information you received as to the offer   
189|  to distribute corresponding source code. (This alternative is   
190|  allowed only for noncommercial distribution and only if you   
191|  received the program in object code or executable form with such   
192|  an offer, in accord with Subsection b above.)   
193  
194| The source code for a work means the preferred form of the work for   
195| making modifications to it. For an executable work, complete source   
196| code means all the source code for all modules it contains, plus any   
197| associated interface definition files, plus the scripts used to   
198| control compilation and installation of the executable. However, as a   
199| special exception, the source code distributed need not include   
200| anything that is normally distributed (in either source or binary   
201| form) with the major components (compiler, kernel, and so on) of the   
202| operating system on which the executable runs, unless that component   
203| itself accompanies the executable.   
204  
205| If distribution of executable or object code is made by offering   
206| access to copy from a designated place, then offering equivalent   
207| access to copy the source code from the same place counts as   
208| distribution of the source code, even though third parties are not   
209| compelled to copy the source along with the object code.   
210  
211|  4\. You may not copy, modify, sublicense, or distribute the Program   
212| except as expressly provided under this License. Any attempt   
213| otherwise to copy, modify, sublicense or distribute the Program is   
214| void, and will automatically terminate your rights under this License.   
215| However, parties who have received copies, or rights, from you under   
216| this License will not have their licenses terminated so long as such   
217| parties remain in full compliance.   
218  
219|  5\. You are not required to accept this License, since you have not   
220| signed it. However, nothing else grants you permission to modify or   
221| distribute the Program or its derivative works. These actions are   
222| prohibited by law if you do not accept this License. Therefore, by   
223| modifying or distributing the Program (or any work based on the   
224| Program), you indicate your acceptance of this License to do so, and   
225| all its terms and conditions for copying, distributing or modifying   
226| the Program or works based on it.   
227  
228|  6\. Each time you redistribute the Program (or any work based on the   
229| Program), the recipient automatically receives a license from the   
230| original licensor to copy, distribute or modify the Program subject to   
231| these terms and conditions. You may not impose any further   
232| restrictions on the recipients' exercise of the rights granted herein.   
233| You are not responsible for enforcing compliance by third parties to   
234| this License.   
235  
236|  7\. If, as a consequence of a court judgment or allegation of patent   
237| infringement or for any other reason (not limited to patent issues),   
238| conditions are imposed on you (whether by court order, agreement or   
239| otherwise) that contradict the conditions of this License, they do not   
240| excuse you from the conditions of this License. If you cannot   
241| distribute so as to satisfy simultaneously your obligations under this   
242| License and any other pertinent obligations, then as a consequence you   
243| may not distribute the Program at all. For example, if a patent   
244| license would not permit royalty-free redistribution of the Program by   
245| all those who receive copies directly or indirectly through you, then   
246| the only way you could satisfy both it and this License would be to   
247| refrain entirely from distribution of the Program.   
248  
249| If any portion of this section is held invalid or unenforceable under   
250| any particular circumstance, the balance of the section is intended to   
251| apply and the section as a whole is intended to apply in other   
252| circumstances.   
253  
254| It is not the purpose of this section to induce you to infringe any   
255| patents or other property right claims or to contest validity of any   
256| such claims; this section has the sole purpose of protecting the   
257| integrity of the free software distribution system, which is   
258| implemented by public license practices. Many people have made   
259| generous contributions to the wide range of software distributed   
260| through that system in reliance on consistent application of that   
261| system; it is up to the author/donor to decide if he or she is willing   
262| to distribute software through any other system and a licensee cannot   
263| impose that choice.   
264  
265| This section is intended to make thoroughly clear what is believed to   
266| be a consequence of the rest of this License.   
267  
268|  8\. If the distribution and/or use of the Program is restricted in   
269| certain countries either by patents or by copyrighted interfaces, the   
270| original copyright holder who places the Program under this License   
271| may add an explicit geographical distribution limitation excluding   
272| those countries, so that distribution is permitted only in or among   
273| countries not thus excluded. In such case, this License incorporates   
274| the limitation as if written in the body of this License.   
275  
276|  9\. The Free Software Foundation may publish revised and/or new versions   
277| of the General Public License from time to time. Such new versions will   
278| be similar in spirit to the present version, but may differ in detail to   
279| address new problems or concerns.   
280  
281| Each version is given a distinguishing version number. If the Program   
282| specifies a version number of this License which applies to it and "any   
283| later version", you have the option of following the terms and conditions   
284| either of that version or of any later version published by the Free   
285| Software Foundation. If the Program does not specify a version number of   
286| this License, you may choose any version ever published by the Free Software   
287| Foundation.   
288  
289|  10\. If you wish to incorporate parts of the Program into other free   
290| programs whose distribution conditions are different, write to the author   
291| to ask for permission. For software which is copyrighted by the Free   
292| Software Foundation, write to the Free Software Foundation; we sometimes   
293| make exceptions for this. Our decision will be guided by the two goals   
294| of preserving the free status of all derivatives of our free software and   
295| of promoting the sharing and reuse of software generally.   
296  
297|  NO WARRANTY   
298  
299|  11\. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY   
300| FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN   
301| OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES   
302| PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED   
303| OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF   
304| MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS   
305| TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE   
306| PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,   
307| REPAIR OR CORRECTION.   
308  
309|  12\. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING   
310| WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR   
311| REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,   
312| INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING   
313| OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED   
314| TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY   
315| YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER   
316| PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE   
317| POSSIBILITY OF SUCH DAMAGES.   
318  
319|  END OF TERMS AND CONDITIONS   
320  
321|  How to Apply These Terms to Your New Programs   
322  
323|  If you develop a new program, and you want it to be of the greatest   
324| possible use to the public, the best way to achieve this is to make it   
325| free software which everyone can redistribute and change under these terms.   
326  
327|  To do so, attach the following notices to the program. It is safest   
328| to attach them to the start of each source file to most effectively   
329| convey the exclusion of warranty; and each file should have at least   
330| the "copyright" line and a pointer to where the full notice is found.   
331  
332|  <one line to give the program's name and a brief idea of what it does.>  
333|  Copyright (C) <year> <name of author>  
334  
335|  This program is free software; you can redistribute it and/or modify   
336|  it under the terms of the GNU General Public License as published by   
337|  the Free Software Foundation; either version 2 of the License, or   
338|  (at your option) any later version.   
339  
340|  This program is distributed in the hope that it will be useful,   
341|  but WITHOUT ANY WARRANTY; without even the implied warranty of   
342|  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the   
343|  GNU General Public License for more details.   
344  
345|  You should have received a copy of the GNU General Public License   
346|  along with this program; if not, write to the Free Software   
347|  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA   
348  
349  
350| Also add information on how to contact you by electronic and paper mail.   
351  
352| If the program is interactive, make it output a short notice like this   
353| when it starts in an interactive mode:   
354  
355|  Gnomovision version 69, Copyright (C) year name of author   
356|  Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.   
357|  This is free software, and you are welcome to redistribute it   
358|  under certain conditions; type `show c' for details.   
359  
360| The hypothetical commands `show w' and `show c' should show the appropriate   
361| parts of the General Public License. Of course, the commands you use may   
362| be called something other than `show w' and `show c'; they could even be   
363| mouse-clicks or menu items--whatever suits your program.   
364  
365| You should also get your employer (if you work as a programmer) or your   
366| school, if any, to sign a "copyright disclaimer" for the program, if   
367| necessary. Here is a sample; alter the names:   
368  
369|  Yoyodyne, Inc., hereby disclaims all copyright interest in the program   
370|  `Gnomovision' (which makes passes at compilers) written by James Hacker.   
371  
372|  <signature of Ty Coon>, 1 April 1989   
373|  Ty Coon, President of Vice   
374  
375| This General Public License does not permit incorporating your program into   
376| proprietary programs. If your program is a subroutine library, you may   
377| consider it more useful to permit linking proprietary applications with the   
378| library. If this is what you want to do, use the GNU Lesser General   
379| Public License instead of this License.