| 1 | The GNU General Public License, Version 3, 29 June 2007 (GPLv3) |
| 2 | =============================================================== |
| 3 | |
| 4 | > Copyright © 2007 |
| 5 | > Free Software Foundation, Inc. |
| 6 | > <<http://fsf.org/>> |
| 7 | |
| 8 | Everyone is permitted to copy and distribute verbatim copies of this license |
| 9 | document, but changing it is not allowed. |
| 10 | |
| 11 | |
| 12 | Preamble |
| 13 | -------- |
| 14 | |
| 15 | The GNU General Public License is a free, copyleft license for software and |
| 16 | other kinds of works. |
| 17 | |
| 18 | The licenses for most software and other practical works are designed to take |
| 19 | away your freedom to share and change the works. By contrast, the GNU General |
| 20 | Public License is intended to guarantee your freedom to share and change all |
| 21 | versions of a program--to make sure it remains free software for all its users. |
| 22 | We, the Free Software Foundation, use the GNU General Public License for most of |
| 23 | our software; it applies also to any other work released this way by its |
| 24 | authors. You can apply it to your programs, too. |
| 25 | |
| 26 | When we speak of free software, we are referring to freedom, not price. Our |
| 27 | General Public Licenses are designed to make sure that you have the freedom to |
| 28 | distribute copies of free software (and charge for them if you wish), that you |
| 29 | receive source code or can get it if you want it, that you can change the |
| 30 | software or use pieces of it in new free programs, and that you know you can do |
| 31 | these things. |
| 32 | |
| 33 | To protect your rights, we need to prevent others from denying you these rights |
| 34 | or asking you to surrender the rights. Therefore, you have certain |
| 35 | responsibilities if you distribute copies of the software, or if you modify it: |
| 36 | responsibilities to respect the freedom of others. |
| 37 | |
| 38 | For example, if you distribute copies of such a program, whether gratis or for a |
| 39 | fee, you must pass on to the recipients the same freedoms that you received. You |
| 40 | must make sure that they, too, receive or can get the source code. And you must |
| 41 | show them these terms so they know their rights. |
| 42 | |
| 43 | Developers that use the GNU GPL protect your rights with two steps: (1) assert |
| 44 | copyright on the software, and (2) offer you this License giving you legal |
| 45 | permission to copy, distribute and/or modify it. |
| 46 | |
| 47 | For the developers' and authors' protection, the GPL clearly explains that there |
| 48 | is no warranty for this free software. For both users' and authors' sake, the |
| 49 | GPL requires that modified versions be marked as changed, so that their problems |
| 50 | will not be attributed erroneously to authors of previous versions. |
| 51 | |
| 52 | Some devices are designed to deny users access to install or run modified |
| 53 | versions of the software inside them, although the manufacturer can do so. This |
| 54 | is fundamentally incompatible with the aim of protecting users' freedom to |
| 55 | change the software. The systematic pattern of such abuse occurs in the area of |
| 56 | products for individuals to use, which is precisely where it is most |
| 57 | unacceptable. Therefore, we have designed this version of the GPL to prohibit |
| 58 | the practice for those products. If such problems arise substantially in other |
| 59 | domains, we stand ready to extend this provision to those domains in future |
| 60 | versions of the GPL, as needed to protect the freedom of users. |
| 61 | |
| 62 | Finally, every program is threatened constantly by software patents. States |
| 63 | should not allow patents to restrict development and use of software on |
| 64 | general-purpose computers, but in those that do, we wish to avoid the special |
| 65 | danger that patents applied to a free program could make it effectively |
| 66 | proprietary. To prevent this, the GPL assures that patents cannot be used to |
| 67 | render the program non-free. |
| 68 | |
| 69 | The precise terms and conditions for copying, distribution and modification |
| 70 | follow. |
| 71 | |
| 72 | |
| 73 | TERMS AND CONDITIONS |
| 74 | -------------------- |
| 75 | |
| 76 | |
| 77 | ### 0. Definitions. |
| 78 | |
| 79 | "This License refers to version 3 of the GNU General Public License. |
| 80 | |
| 81 | "Copyright" also means copyright-like laws that apply to other kinds of works, |
| 82 | such as semiconductor masks. |
| 83 | |
| 84 | "The Program" refers to any copyrightable work licensed under this License. Each |
| 85 | licensee is addressed as "you". "Licensees" and "recipients" may be individuals |
| 86 | or organizations. |
| 87 | |
| 88 | To "modify" a work means to copy from or adapt all or part of the work in a |
| 89 | fashion requiring copyright permission, other than the making of an exact copy. |
| 90 | The resulting work is called a "modified version" of the earlier work or a work |
| 91 | "based on" the earlier work. |
| 92 | |
| 93 | A "covered work" means either the unmodified Program or a work based on the |
| 94 | Program. |
| 95 | |
| 96 | To "propagate" a work means to do anything with it that, without permission, |
| 97 | would make you directly or secondarily liable for infringement under applicable |
| 98 | copyright law, except executing it on a computer or modifying a private copy. |
| 99 | Propagation includes copying, distribution (with or without modification), |
| 100 | making available to the public, and in some countries other activities as well. |
| 101 | |
| 102 | To "convey" a work means any kind of propagation that enables other parties to |
| 103 | make or receive copies. Mere interaction with a user through a computer network, |
| 104 | with no transfer of a copy, is not conveying. |
| 105 | |
| 106 | An interactive user interface displays "Appropriate Legal Notices" to the extent |
| 107 | that it includes a convenient and prominently visible feature that (1) displays |
| 108 | an appropriate copyright notice, and (2) tells the user that there is no |
| 109 | warranty for the work (except to the extent that warranties are provided), that |
| 110 | licensees may convey the work under this License, and how to view a copy of this |
| 111 | License. If the interface presents a list of user commands or options, such as a |
| 112 | menu, a prominent item in the list meets this criterion. |
| 113 | |
| 114 | |
| 115 | ### 1. Source Code. |
| 116 | |
| 117 | The "source code" for a work means the preferred form of the work for making |
| 118 | modifications to it. "Object code" means any non-source form of a work. |
| 119 | |
| 120 | A "Standard Interface" means an interface that either is an official standard |
| 121 | defined by a recognized standards body, or, in the case of interfaces specified |
| 122 | for a particular programming language, one that is widely used among developers |
| 123 | working in that language. |
| 124 | |
| 125 | The "System Libraries" of an executable work include anything, other than the |
| 126 | work as a whole, that (a) is included in the normal form of packaging a Major |
| 127 | Component, but which is not part of that Major Component, and (b) serves only to |
| 128 | enable use of the work with that Major Component, or to implement a Standard |
| 129 | Interface for which an implementation is available to the public in source code |
| 130 | form. A "Major Component", in this context, means a major essential component |
| 131 | (kernel, window system, and so on) of the specific operating system (if any) on |
| 132 | which the executable work runs, or a compiler used to produce the work, or an |
| 133 | object code interpreter used to run it. |
| 134 | |
| 135 | The "Corresponding Source" for a work in object code form means all the source |
| 136 | code needed to generate, install, and (for an executable work) run the object |
| 137 | code and to modify the work, including scripts to control those activities. |
| 138 | However, it does not include the work's System Libraries, or general-purpose |
| 139 | tools or generally available free programs which are used unmodified in |
| 140 | performing those activities but which are not part of the work. For example, |
| 141 | Corresponding Source includes interface definition files associated with source |
| 142 | files for the work, and the source code for shared libraries and dynamically |
| 143 | linked subprograms that the work is specifically designed to require, such as by |
| 144 | intimate data communication or control flow between those subprograms and other |
| 145 | parts of the work. |
| 146 | |
| 147 | The Corresponding Source need not include anything that users can regenerate |
| 148 | automatically from other parts of the Corresponding Source. |
| 149 | |
| 150 | The Corresponding Source for a work in source code form is that same work. |
| 151 | |
| 152 | |
| 153 | ### 2. Basic Permissions. |
| 154 | |
| 155 | All rights granted under this License are granted for the term of copyright on |
| 156 | the Program, and are irrevocable provided the stated conditions are met. This |
| 157 | License explicitly affirms your unlimited permission to run the unmodified |
| 158 | Program. The output from running a covered work is covered by this License only |
| 159 | if the output, given its content, constitutes a covered work. This License |
| 160 | acknowledges your rights of fair use or other equivalent, as provided by |
| 161 | copyright law. |
| 162 | |
| 163 | You may make, run and propagate covered works that you do not convey, without |
| 164 | conditions so long as your license otherwise remains in force. You may convey |
| 165 | covered works to others for the sole purpose of having them make modifications |
| 166 | exclusively for you, or provide you with facilities for running those works, |
| 167 | provided that you comply with the terms of this License in conveying all |
| 168 | material for which you do not control copyright. Those thus making or running |
| 169 | the covered works for you must do so exclusively on your behalf, under your |
| 170 | direction and control, on terms that prohibit them from making any copies of |
| 171 | your copyrighted material outside their relationship with you. |
| 172 | |
| 173 | Conveying under any other circumstances is permitted solely under the conditions |
| 174 | stated below. Sublicensing is not allowed; section 10 makes it unnecessary. |
| 175 | |
| 176 | |
| 177 | ### 3. Protecting Users' Legal Rights From Anti-Circumvention Law. |
| 178 | |
| 179 | No covered work shall be deemed part of an effective technological measure under |
| 180 | any applicable law fulfilling obligations under article 11 of the WIPO copyright |
| 181 | treaty adopted on 20 December 1996, or similar laws prohibiting or restricting |
| 182 | circumvention of such measures. |
| 183 | |
| 184 | When you convey a covered work, you waive any legal power to forbid |
| 185 | circumvention of technological measures to the extent such circumvention is |
| 186 | effected by exercising rights under this License with respect to the covered |
| 187 | work, and you disclaim any intention to limit operation or modification of the |
| 188 | work as a means of enforcing, against the work's users, your or third parties' |
| 189 | legal rights to forbid circumvention of technological measures. |
| 190 | |
| 191 | |
| 192 | ### 4. Conveying Verbatim Copies. |
| 193 | |
| 194 | You may convey verbatim copies of the Program's source code as you receive it, |
| 195 | in any medium, provided that you conspicuously and appropriately publish on each |
| 196 | copy an appropriate copyright notice; keep intact all notices stating that this |
| 197 | License and any non-permissive terms added in accord with section 7 apply to the |
| 198 | code; keep intact all notices of the absence of any warranty; and give all |
| 199 | recipients a copy of this License along with the Program. |
| 200 | |
| 201 | You may charge any price or no price for each copy that you convey, and you may |
| 202 | offer support or warranty protection for a fee. |
| 203 | |
| 204 | |
| 205 | ### 5. Conveying Modified Source Versions. |
| 206 | |
| 207 | You may convey a work based on the Program, or the modifications to produce it |
| 208 | from the Program, in the form of source code under the terms of section 4, |
| 209 | provided that you also meet all of these conditions: |
| 210 | |
| 211 | * **a)** The work must carry prominent notices stating that you modified it, |
| 212 | and giving a relevant date. |
| 213 | |
| 214 | * **b)** The work must carry prominent notices stating that it is released |
| 215 | under this License and any conditions added under section 7. This |
| 216 | requirement modifies the requirement in section 4 to "keep intact all |
| 217 | notices". |
| 218 | |
| 219 | * **c)** You must license the entire work, as a whole, under this License to |
| 220 | anyone who comes into possession of a copy. This License will therefore |
| 221 | apply, along with any applicable section 7 additional terms, to the whole of |
| 222 | the work, and all its parts, regardless of how they are packaged. This |
| 223 | License gives no permission to license the work in any other way, but it |
| 224 | does not invalidate such permission if you have separately received it. |
| 225 | |
| 226 | * **d)** If the work has interactive user interfaces, each must display |
| 227 | Appropriate Legal Notices; however, if the Program has interactive |
| 228 | interfaces that do not display Appropriate Legal Notices, your work need not |
| 229 | make them do so. |
| 230 | |
| 231 | A compilation of a covered work with other separate and independent works, |
| 232 | which are not by their nature extensions of the covered work, and which are |
| 233 | not combined with it such as to form a larger program, in or on a volume of |
| 234 | a storage or distribution medium, is called an "aggregate" if the |
| 235 | compilation and its resulting copyright are not used to limit the access or |
| 236 | legal rights of the compilation's users beyond what the individual works |
| 237 | permit. Inclusion of a covered work in an aggregate does not cause this |
| 238 | License to apply to the other parts of the aggregate. |
| 239 | |
| 240 | |
| 241 | ### 6. Conveying Non-Source Forms. |
| 242 | |
| 243 | You may convey a covered work in object code form under the terms of sections 4 |
| 244 | and 5, provided that you also convey the machine-readable Corresponding Source |
| 245 | under the terms of this License, in one of these ways: |
| 246 | |
| 247 | * **a)** Convey the object code in, or embodied in, a physical product |
| 248 | (including a physical distribution medium), accompanied by the Corresponding |
| 249 | Source fixed on a durable physical medium customarily used for software |
| 250 | interchange. |
| 251 | |
| 252 | * **b)** Convey the object code in, or embodied in, a physical product |
| 253 | (including a physical distribution medium), accompanied by a written offer, |
| 254 | valid for at least three years and valid for as long as you offer spare |
| 255 | parts or customer support for that product model, to give anyone who |
| 256 | possesses the object code either (1) a copy of the Corresponding Source for |
| 257 | all the software in the product that is covered by this License, on a |
| 258 | durable physical medium customarily used for software interchange, for a |
| 259 | price no more than your reasonable cost of physically performing this |
| 260 | conveying of source, or (2) access to copy the Corresponding Source from a |
| 261 | network server at no charge. |
| 262 | |
| 263 | * **c)** Convey individual copies of the object code with a copy of the |
| 264 | written offer to provide the Corresponding Source. This alternative is |
| 265 | allowed only occasionally and noncommercially, and only if you received the |
| 266 | object code with such an offer, in accord with subsection 6b. |
| 267 | |
| 268 | * **d)** Convey the object code by offering access from a designated place |
| 269 | (gratis or for a charge), and offer equivalent access to the Corresponding |
| 270 | Source in the same way through the same place at no further charge. You need |
| 271 | not require recipients to copy the Corresponding Source along with the |
| 272 | object code. If the place to copy the object code is a network server, the |
| 273 | Corresponding Source may be on a different server (operated by you or a |
| 274 | third party) that supports equivalent copying facilities, provided you |
| 275 | maintain clear directions next to the object code saying where to find the |
| 276 | Corresponding Source. Regardless of what server hosts the Corresponding |
| 277 | Source, you remain obligated to ensure that it is available for as long as |
| 278 | needed to satisfy these requirements. |
| 279 | |
| 280 | * **e)** Convey the object code using peer-to-peer transmission, provided you |
| 281 | inform other peers where the object code and Corresponding Source of the |
| 282 | work are being offered to the general public at no charge under subsection |
| 283 | 6d. |
| 284 | |
| 285 | A separable portion of the object code, whose source code is excluded from |
| 286 | the Corresponding Source as a System Library, need not be included in |
| 287 | conveying the object code work. |
| 288 | |
| 289 | A "User Product" is either (1) a "consumer product", which means any |
| 290 | tangible personal property which is normally used for personal, family, or |
| 291 | household purposes, or (2) anything designed or sold for incorporation into |
| 292 | a dwelling. In determining whether a product is a consumer product, doubtful |
| 293 | cases shall be resolved in favor of coverage. For a particular product |
| 294 | received by a particular user, "normally used" refers to a typical or common |
| 295 | use of that class of product, regardless of the status of the particular |
| 296 | user or of the way in which the particular user actually uses, or expects or |
| 297 | is expected to use, the product. A product is a consumer product regardless |
| 298 | of whether the product has substantial commercial, industrial or non- |
| 299 | consumer uses, unless such uses represent the only significant mode of use |
| 300 | of the product. |
| 301 | |
| 302 | "Installation Information" for a User Product means any methods, procedures, |
| 303 | authorization keys, or other information required to install and execute |
| 304 | modified versions of a covered work in that User Product from a modified |
| 305 | version of its Corresponding Source. The information must suffice to ensure |
| 306 | that the continued functioning of the modified object code is in no case |
| 307 | prevented or interfered with solely because modification has been made. |
| 308 | |
| 309 | If you convey an object code work under this section in, or with, or |
| 310 | specifically for use in, a User Product, and the conveying occurs as part of |
| 311 | a transaction in which the right of possession and use of the User Product |
| 312 | is transferred to the recipient in perpetuity or for a fixed term |
| 313 | (regardless of how the transaction is characterized), the Corresponding |
| 314 | Source conveyed under this section must be accompanied by the Installation |
| 315 | Information. But this requirement does not apply if neither you nor any |
| 316 | third party retains the ability to install modified object code on the User |
| 317 | Product (for example, the work has been installed in ROM). |
| 318 | |
| 319 | The requirement to provide Installation Information does not include a |
| 320 | requirement to continue to provide support service, warranty, or updates for |
| 321 | a work that has been modified or installed by the recipient, or for the User |
| 322 | Product in which it has been modified or installed. Access to a network may |
| 323 | be denied when the modification itself materially and adversely affects the |
| 324 | operation of the network or violates the rules and protocols for |
| 325 | communication across the network. |
| 326 | |
| 327 | Corresponding Source conveyed, and Installation Information provided, in |
| 328 | accord with this section must be in a format that is publicly documented |
| 329 | (and with an implementation available to the public in source code form), |
| 330 | and must require no special password or key for unpacking, reading or |
| 331 | copying. |
| 332 | |
| 333 | |
| 334 | ### 7. Additional Terms. |
| 335 | |
| 336 | "Additional permissions" are terms that supplement the terms of this License by |
| 337 | making exceptions from one or more of its conditions. Additional permissions |
| 338 | that are applicable to the entire Program shall be treated as though they were |
| 339 | included in this License, to the extent that they are valid under applicable |
| 340 | law. If additional permissions apply only to part of the Program, that part may |
| 341 | be used separately under those permissions, but the entire Program remains |
| 342 | governed by this License without regard to the additional permissions. |
| 343 | |
| 344 | When you convey a copy of a covered work, you may at your option remove any |
| 345 | additional permissions from that copy, or from any part of it. (Additional |
| 346 | permissions may be written to require their own removal in certain cases when |
| 347 | you modify the work.) You may place additional permissions on material, added by |
| 348 | you to a covered work, for which you have or can give appropriate copyright |
| 349 | permission. |
| 350 | |
| 351 | Notwithstanding any other provision of this License, for material you add to a |
| 352 | covered work, you may (if authorized by the copyright holders of that material) |
| 353 | supplement the terms of this License with terms: |
| 354 | |
| 355 | * **a)** Disclaiming warranty or limiting liability differently from the terms |
| 356 | of sections 15 and 16 of this License; or |
| 357 | |
| 358 | * **b)** Requiring preservation of specified reasonable legal notices or |
| 359 | author attributions in that material or in the Appropriate Legal Notices |
| 360 | displayed by works containing it; or |
| 361 | |
| 362 | * **c)** Prohibiting misrepresentation of the origin of that material, or |
| 363 | requiring that modified versions of such material be marked in reasonable |
| 364 | ways as different from the original version; or |
| 365 | |
| 366 | * **d)** Limiting the use for publicity purposes of names of licensors or |
| 367 | authors of the material; or |
| 368 | |
| 369 | * **e)** Declining to grant rights under trademark law for use of some trade |
| 370 | names, trademarks, or service marks; or |
| 371 | |
| 372 | * **f)** Requiring indemnification of licensors and authors of that material |
| 373 | by anyone who conveys the material (or modified versions of it) with |
| 374 | contractual assumptions of liability to the recipient, for any liability |
| 375 | that these contractual assumptions directly impose on those licensors and |
| 376 | authors. |
| 377 | |
| 378 | All other non-permissive additional terms are considered "further restrictions" |
| 379 | within the meaning of section 10. If the Program as you received it, or any part |
| 380 | of it, contains a notice stating that it is governed by this License along with |
| 381 | a term that is a further restriction, you may remove that term. If a license |
| 382 | document contains a further restriction but permits relicensing or conveying |
| 383 | under this License, you may add to a covered work material governed by the terms |
| 384 | of that license document, provided that the further restriction does not survive |
| 385 | such relicensing or conveying. |
| 386 | |
| 387 | If you add terms to a covered work in accord with this section, you must place, |
| 388 | in the relevant source files, a statement of the additional terms that apply to |
| 389 | those files, or a notice indicating where to find the applicable terms. |
| 390 | |
| 391 | Additional terms, permissive or non-permissive, may be stated in the form of a |
| 392 | separately written license, or stated as exceptions; the above requirements |
| 393 | apply either way. |
| 394 | |
| 395 | |
| 396 | ### 8. Termination. |
| 397 | |
| 398 | You may not propagate or modify a covered work except as expressly provided |
| 399 | under this License. Any attempt otherwise to propagate or modify it is void, and |
| 400 | will automatically terminate your rights under this License (including any |
| 401 | patent licenses granted under the third paragraph of section 11). |
| 402 | |
| 403 | However, if you cease all violation of this License, then your license from a |
| 404 | particular copyright holder is reinstated (a) provisionally, unless and until |
| 405 | the copyright holder explicitly and finally terminates your license, and (b) |
| 406 | permanently, if the copyright holder fails to notify you of the violation by |
| 407 | some reasonable means prior to 60 days after the cessation. |
| 408 | |
| 409 | Moreover, your license from a particular copyright holder is reinstated |
| 410 | permanently if the copyright holder notifies you of the violation by some |
| 411 | reasonable means, this is the first time you have received notice of violation |
| 412 | of this License (for any work) from that copyright holder, and you cure the |
| 413 | violation prior to 30 days after your receipt of the notice. |
| 414 | |
| 415 | Termination of your rights under this section does not terminate the licenses of |
| 416 | parties who have received copies or rights from you under this License. If your |
| 417 | rights have been terminated and not permanently reinstated, you do not qualify |
| 418 | to receive new licenses for the same material under section 10. |
| 419 | |
| 420 | |
| 421 | ### 9. Acceptance Not Required for Having Copies. |
| 422 | |
| 423 | You are not required to accept this License in order to receive or run a copy of |
| 424 | the Program. Ancillary propagation of a covered work occurring solely as a |
| 425 | consequence of using peer-to-peer transmission to receive a copy likewise does |
| 426 | not require acceptance. However, nothing other than this License grants you |
| 427 | permission to propagate or modify any covered work. These actions infringe |
| 428 | copyright if you do not accept this License. Therefore, by modifying or |
| 429 | propagating a covered work, you indicate your acceptance of this License to do |
| 430 | so. |
| 431 | |
| 432 | |
| 433 | ### 10. Automatic Licensing of Downstream Recipients. |
| 434 | |
| 435 | Each time you convey a covered work, the recipient automatically receives a |
| 436 | license from the original licensors, to run, modify and propagate that work, |
| 437 | subject to this License. You are not responsible for enforcing compliance by |
| 438 | third parties with this License. |
| 439 | |
| 440 | An "entity transaction" is a transaction transferring control of an |
| 441 | organization, or substantially all assets of one, or subdividing an |
| 442 | organization, or merging organizations. If propagation of a covered work results |
| 443 | from an entity transaction, each party to that transaction who receives a copy |
| 444 | of the work also receives whatever licenses to the work the party's predecessor |
| 445 | in interest had or could give under the previous paragraph, plus a right to |
| 446 | possession of the Corresponding Source of the work from the predecessor in |
| 447 | interest, if the predecessor has it or can get it with reasonable efforts. |
| 448 | |
| 449 | You may not impose any further restrictions on the exercise of the rights |
| 450 | granted or affirmed under this License. For example, you may not impose a |
| 451 | license fee, royalty, or other charge for exercise of rights granted under this |
| 452 | License, and you may not initiate litigation (including a cross-claim or |
| 453 | counterclaim in a lawsuit) alleging that any patent claim is infringed by |
| 454 | making, using, selling, offering for sale, or importing the Program or any |
| 455 | portion of it. |
| 456 | |
| 457 | |
| 458 | ### 11. Patents. |
| 459 | |
| 460 | A "contributor" is a copyright holder who authorizes use under this License of |
| 461 | the Program or a work on which the Program is based. The work thus licensed is |
| 462 | called the contributor's "contributor version". |
| 463 | |
| 464 | A contributor's "essential patent claims" are all patent claims owned or |
| 465 | controlled by the contributor, whether already acquired or hereafter acquired, |
| 466 | that would be infringed by some manner, permitted by this License, of making, |
| 467 | using, or selling its contributor version, but do not include claims that would |
| 468 | be infringed only as a consequence of further modification of the contributor |
| 469 | version. For purposes of this definition, "control" includes the right to grant |
| 470 | patent sublicenses in a manner consistent with the requirements of this License. |
| 471 | |
| 472 | Each contributor grants you a non-exclusive, worldwide, royalty-free patent |
| 473 | license under the contributor's essential patent claims, to make, use, sell, |
| 474 | offer for sale, import and otherwise run, modify and propagate the contents of |
| 475 | its contributor version. |
| 476 | |
| 477 | In the following three paragraphs, a "patent license" is any express agreement |
| 478 | or commitment, however denominated, not to enforce a patent (such as an express |
| 479 | permission to practice a patent or covenant not to sue for patent infringement). |
| 480 | To "grant" such a patent license to a party means to make such an agreement or |
| 481 | commitment not to enforce a patent against the party. |
| 482 | |
| 483 | If you convey a covered work, knowingly relying on a patent license, and the |
| 484 | Corresponding Source of the work is not available for anyone to copy, free of |
| 485 | charge and under the terms of this License, through a publicly available network |
| 486 | server or other readily accessible means, then you must either (1) cause the |
| 487 | Corresponding Source to be so available, or (2) arrange to deprive yourself of |
| 488 | the benefit of the patent license for this particular work, or (3) arrange, in a |
| 489 | manner consistent with the requirements of this License, to extend the patent |
| 490 | license to downstream recipients. "Knowingly relying" means you have actual |
| 491 | knowledge that, but for the patent license, your conveying the covered work in a |
| 492 | country, or your recipient's use of the covered work in a country, would |
| 493 | infringe one or more identifiable patents in that country that you have reason |
| 494 | to believe are valid. |
| 495 | |
| 496 | If, pursuant to or in connection with a single transaction or arrangement, you |
| 497 | convey, or propagate by procuring conveyance of, a covered work, and grant a |
| 498 | patent license to some of the parties receiving the covered work authorizing |
| 499 | them to use, propagate, modify or convey a specific copy of the covered work, |
| 500 | then the patent license you grant is automatically extended to all recipients of |
| 501 | the covered work and works based on it. |
| 502 | |
| 503 | A patent license is "discriminatory" if it does not include within the scope of |
| 504 | its coverage, prohibits the exercise of, or is conditioned on the non- exercise |
| 505 | of one or more of the rights that are specifically granted under this License. |
| 506 | You may not convey a covered work if you are a party to an arrangement with a |
| 507 | third party that is in the business of distributing software, under which you |
| 508 | make payment to the third party based on the extent of your activity of |
| 509 | conveying the work, and under which the third party grants, to any of the |
| 510 | parties who would receive the covered work from you, a discriminatory patent |
| 511 | license (a) in connection with copies of the covered work conveyed by you (or |
| 512 | copies made from those copies), or (b) primarily for and in connection with |
| 513 | specific products or compilations that contain the covered work, unless you |
| 514 | entered into that arrangement, or that patent license was granted, prior to 28 |
| 515 | March 2007. |
| 516 | |
| 517 | Nothing in this License shall be construed as excluding or limiting any implied |
| 518 | license or other defenses to infringement that may otherwise be available to you |
| 519 | under applicable patent law. |
| 520 | |
| 521 | |
| 522 | ### 12. No Surrender of Others' Freedom. |
| 523 | |
| 524 | If conditions are imposed on you (whether by court order, agreement or |
| 525 | otherwise) that contradict the conditions of this License, they do not excuse |
| 526 | you from the conditions of this License. If you cannot convey a covered work so |
| 527 | as to satisfy simultaneously your obligations under this License and any other |
| 528 | pertinent obligations, then as a consequence you may not convey it at all. For |
| 529 | example, if you agree to terms that obligate you to collect a royalty for |
| 530 | further conveying from those to whom you convey the Program, the only way you |
| 531 | could satisfy both those terms and this License would be to refrain entirely |
| 532 | from conveying the Program. |
| 533 | |
| 534 | |
| 535 | ### 13. Use with the GNU Affero General Public License. |
| 536 | |
| 537 | Notwithstanding any other provision of this License, you have permission to link |
| 538 | or combine any covered work with a work licensed under version 3 of the GNU |
| 539 | Affero General Public License into a single combined work, and to convey the |
| 540 | resulting work. The terms of this License will continue to apply to the part |
| 541 | which is the covered work, but the special requirements of the GNU Affero |
| 542 | General Public License, section 13, concerning interaction through a network |
| 543 | will apply to the combination as such. |
| 544 | |
| 545 | |
| 546 | ### 14. Revised Versions of this License. |
| 547 | |
| 548 | The Free Software Foundation may publish revised and/or new versions of the GNU |
| 549 | General Public License from time to time. Such new versions will be similar in |
| 550 | spirit to the present version, but may differ in detail to address new problems |
| 551 | or concerns. |
| 552 | |
| 553 | Each version is given a distinguishing version number. If the Program specifies |
| 554 | that a certain numbered version of the GNU General Public License "or any later |
| 555 | version" applies to it, you have the option of following the terms and |
| 556 | conditions either of that numbered version or of any later version published by |
| 557 | the Free Software Foundation. If the Program does not specify a version number |
| 558 | of the GNU General Public License, you may choose any version ever published by |
| 559 | the Free Software Foundation. |
| 560 | |
| 561 | If the Program specifies that a proxy can decide which future versions of the |
| 562 | GNU General Public License can be used, that proxy's public statement of |
| 563 | acceptance of a version permanently authorizes you to choose that version for |
| 564 | the Program. |
| 565 | |
| 566 | Later license versions may give you additional or different permissions. |
| 567 | However, no additional obligations are imposed on any author or copyright holder |
| 568 | as a result of your choosing to follow a later version. |
| 569 | |
| 570 | |
| 571 | ### 15. Disclaimer of Warranty. |
| 572 | |
| 573 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. |
| 574 | EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER |
| 575 | PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
| 576 | EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 577 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE |
| 578 | QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE |
| 579 | DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
| 580 | |
| 581 | |
| 582 | ### 16. Limitation of Liability. |
| 583 | |
| 584 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY |
| 585 | COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS |
| 586 | PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, |
| 587 | INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE |
| 588 | THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED |
| 589 | INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE |
| 590 | PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY |
| 591 | HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 592 | |
| 593 | ### 17. Interpretation of Sections 15 and 16. |
| 594 | |
| 595 | If the disclaimer of warranty and limitation of liability provided above cannot |
| 596 | be given local legal effect according to their terms, reviewing courts shall |
| 597 | apply local law that most closely approximates an absolute waiver of all civil |
| 598 | liability in connection with the Program, unless a warranty or assumption of |
| 599 | liability accompanies a copy of the Program in return for a fee. |
| 600 | |
| 601 | END OF TERMS AND CONDITIONS |
| 602 | |
| 603 | |
| 604 | How to Apply These Terms to Your New Programs |
| 605 | --------------------------------------------- |
| 606 | |
| 607 | If you develop a new program, and you want it to be of the greatest possible use |
| 608 | to the public, the best way to achieve this is to make it free software which |
| 609 | everyone can redistribute and change under these terms. |
| 610 | |
| 611 | To do so, attach the following notices to the program. It is safest to attach |
| 612 | them to the start of each source file to most effectively state the exclusion of |
| 613 | warranty; and each file should have at least the "copyright" line and a pointer |
| 614 | to where the full notice is found. |
| 615 | |
| 616 | <one line to give the program's name and a brief idea of what it does.> |
| 617 | Copyright (C) <year> <name of author> |
| 618 | |
| 619 | This program is free software: you can redistribute it and/or modify it |
| 620 | under the terms of the GNU General Public License as published by the Free |
| 621 | Software Foundation, either version 3 of the License, or (at your option) |
| 622 | any later version. |
| 623 | |
| 624 | This program is distributed in the hope that it will be useful, but WITHOUT |
| 625 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 626 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 627 | more details. |
| 628 | |
| 629 | You should have received a copy of the GNU General Public License along with |
| 630 | this program. If not, see <http://www.gnu.org/licenses/>. |
| 631 | |
| 632 | Also add information on how to contact you by electronic and paper mail. |
| 633 | |
| 634 | If the program does terminal interaction, make it output a short notice like |
| 635 | this when it starts in an interactive mode: |
| 636 | |
| 637 | <program> Copyright (C) <year> <name of author> |
| 638 | This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'. |
| 639 | This is free software, and you are welcome to redistribute it under certain |
| 640 | conditions; type 'show c' for details. |
| 641 | |
| 642 | The hypothetical commands 'show w' and 'show c' should show the appropriate |
| 643 | parts of the General Public License. Of course, your program's commands might be |
| 644 | different; for a GUI interface, you would use an "about box". |
| 645 | |
| 646 | You should also get your employer (if you work as a programmer) or school, if |
| 647 | any, to sign a "copyright disclaimer" for the program, if necessary. For more |
| 648 | information on this, and how to apply and follow the GNU GPL, see |
| 649 | <<http://www.gnu.org/licenses/>>. |
| 650 | |
| 651 | The GNU General Public License does not permit incorporating your program into |
| 652 | proprietary programs. If your program is a subroutine library, you may consider |
| 653 | it more useful to permit linking proprietary applications with the library. If |
| 654 | this is what you want to do, use the GNU Lesser General Public License instead |
| 655 | of this License. But first, please read |
| 656 | <<http://www.gnu.org/philosophy/why-not-lgpl.html>>. |