chiark - git - ianmdlvl - secnet.git/blob

1 secnet - flexible VPN software

2 ==============================

4 secnet is

31 GPLv3+

32 ======

34 secnet is distributed under the terms of the GNU General Public

35 License, version 3 or later.

37 secnet is distributed in the hope that it will be useful, but WITHOUT

38 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

39 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

40 for more details.

42 The file COPYING in the source tree contains a copy of the GNU GPL v3.

43 A copy of this licence can be found on Debian systems (and

44 derivatives) in /usr/share/common-licenses/GPL-3.

46 Some files contain a notice with the abbreviated form:

47 SPDX-License-Identifier: GPL-3.0-or-later

48 As is conventional, this should be read as a licence grant.

50 Some included libraries contain CC-BY-SA 4.0 code, which is not

51 necessarily compatibile with future GPL versions, so the effective

52 licence for a built and distributed secnet package is GPLv3 only.

55 Contributing

56 ============

58 Contributions to secnet are accepted based on the git commit

59 Signed-off-by convention, by which the contributors' certify their

60 contributions according to the Developer Certificate of Origin version

61 1.1 - see the file DEVELOPER-CERTIFICATE.

63 In accordance with the Developer Certificate of Origin, if you make a

64 contribution to one of the incorporated works with a more liberal

65 licence, you will be taken to have made your contribution under that

66 more liberal licence.

68 If you create a new file please be sure to add an appropriate licence

69 header. In the main parts of secnet this should be something like:

70 * This file is part of secnet.

71 * See LICENCE and CREDITS for full list of copyright holders.

72 * SPDX-License-Identifier: GPL-3.0-or-later

73 * There is NO WARRANTY.

76 Incorporated works

77 ==================

79 Some of the source code has more liberal licences, all of which are

80 GPLv3-compatible, and potentially GPLv3+-compatible.

82 These portions can be used, distributed, and modified, separately,

83 under the more liberal licence. But when they are used or distributed

84 as part of secnet, the GPL applies to the combination.

87 ac_prog_cc_no_writeable_strings.m4

88 -----------------------------------

90 This is a version of ax_cflags_no_writable_strings.m4 which is

91 now in the Autoconf Archive, where it has this permission notice:

95 This program is free software; you can redistribute it and/or modify it

96 under the terms of the GNU General Public License as published by the

97 Free Software Foundation; either version 3 of the License, or (at your

98 option) any later version.

100 This program is distributed in the hope that it will be useful, but

101 WITHOUT ANY WARRANTY; without even the implied warranty of

102 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

103 Public License for more details.

104

105 You should have received a copy of the GNU General Public License along

106 with this program. If not, see <https://www.gnu.org/licenses/>.

107

108 As a special exception, the respective Autoconf Macro's copyright owner

109 gives unlimited permission to copy, distribute and modify the configure

110 scripts that are the output of Autoconf when processing the Macro. You

111 need not follow the terms of the GNU General Public License when using

112 or distributing such scripts, even though portions of the text of the

113 Macro appear in them. The GNU General Public License (GPL) does govern

114 all other use of the material that constitutes the Autoconf Macro.

115

116 This special exception to the GPL applies to versions of the Autoconf

117 Macro released by the Autoconf Archive. When you make and distribute a

118 modified version of the Autoconf Macro, you may extend this special

119 exception to the GPL to apply to your modified version as well.

120

121

122 argparseactionnoyes.py

123 ----------------------

124

127

128 https://stackoverflow.com/questions/9234258/in-python-argparse-is-it-possible-to-have-paired-no-something-something-arg/20422915#20422915

129

130 CC-BY-SA 4.0

131 https://creativecommons.org/licenses/by-sa/4.0/legalcode

132 by virtue of

133 https://stackoverflow.com/legal/terms-of-service#licensing

134 which says everything is CC-BY-SA and has a link to v4.0

135 (And which is therefore compatible with secnet's GPLv3)

136

137 all retrieved 4.11.2019 and rechecked 12.11.2022

138

139

140 aes.[ch]

141 --------

142

146

147 Original licence:

148

149 This code is hereby placed in the public domain.

150

151 THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS

152 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

153 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

154 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE

155 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

156 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

157 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR

158 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

159 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE

160 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

161 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

162

163

164 base91-c/

165 ---------

166

168

169 Redistribution and use in source and binary forms, with or without

170 modification, are permitted provided that the following conditions

171 are met:

172

173 - Redistributions of source code must retain the above copyright

174 notice, this list of conditions and the following disclaimer.

175 - Redistributions in binary form must reproduce the above

176 copyright notice, this list of conditions and the following

177 disclaimer in the documentation and/or other materials provided

178 with the distribution.

179 - Neither the name of Joachim Henke nor the names of his

180 contributors may be used to endorse or promote products derived

181 from this software without specific prior written permission.

182

183 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

184 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

185 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

186 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

187 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

188 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

189 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

190 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

191 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

192 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

193 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

194 POSSIBILITY OF SUCH DAMAGE.

195

196

197 base91-python/

198 ---------------

199

202

203 Redistribution and use in source and binary forms, with or without

204 modification, are permitted provided that the following conditions

205 are met:

206

207 * Redistributions of source code must retain the above copyright

208 notice, this list of conditions and the following disclaimer.

209 * Redistributions in binary form must reproduce the above

210 copyright notice, this list of conditions and the following

211 disclaimer in the documentation and/or other materials provided

212 with the distribution.

213 * Neither the name of Adrien Beraud, Wisdom Vibes Pte. Ltd., nor

214 the names of its contributors may be used to endorse or promote

215 products derived from this software without specific prior

216 written permission.

217

218 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

219 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

220 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

221 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

222 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

223 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

224 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

225 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

226 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

227 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

228 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

229 POSSIBILITY OF SUCH DAMAGE.

230

231

232 configure

233 ---------

234

235 This is autogenerated from various other inputs, including FSF code in

236 utotools, regarding which the FSF say this:

237

239

240 This configure script is free software; the Free Software Foundation

241 gives unlimited permission to copy, distribute and modify it.

242

243 However, in fact, the script is GPLv3+ because it contains pieces

244 derived from secnet's aclocal.m4, etc.

245

246

247 debian/

248 -------

249

250 debian/init is from an original init script example by Miquel van

251 Smoorenburg and Ian Murdock. Modified by Richard Kettlewell.

252

253 debian/rules was once from an example from Joey Hess and is now

254 (after most of it was deleted) probably entirely the work of Ian

255 Jackson.

256

257 The remainder of debian/ is by the authors of Secnet (with possible

258 future changes made by Debian contributors).

259

260

261 install-sh

262 ----------

263

265

266 Permission to use, copy, modify, distribute, and sell this software

267 and its documentation for any purpose is hereby granted without fee,

268 provided that the above copyright notice appear in all copies and

269 that both that copyright notice and this permission notice appear in

270 supporting documentation, and that the name of M.I.T. not be used in

271 advertising or publicity pertaining to distribution of the software

272 without specific, written prior permission. M.I.T. makes no

273 representations about the suitability of this software for any

274 purpose. It is provided "as is" without express or implied

275 warranty.

276

277

278 md5.[ch]

279 --------

280

281 Authored by Colin Plumb in 1993. Public domain statement:

282

283 This code implements the MD5 message-digest algorithm.

284 The algorithm is due to Ron Rivest. This code was

285 written by Colin Plumb in 1993, no copyright is claimed.

286 This code is in the public domain; do with it what you wish.

287

288 I interpet this as a blanket permision.

289

290

291 serpent.c, serpentsboxes.h

292 ---------------------------

293

294 Authored by Ross Anderson, Eli Biham, Lars Knudsen.

295

296 Quoting the Serpent web page:

297

298 Serpent is now completely in the public domain, and we impose no

299 restrictions on its use. This was announced on the 21st August at

300 the First AES Candidate Conference. The optimised implementations

301 in the submission package are now under the General Public License

302 (GPL), although some comments in the code still say otherwise. You

303 are welcome to use Serpent for any application. If you do use it,

304 we would appreciate it if you would let us know!

305

306 https://www.cl.cam.ac.uk/~rja14/serpent.html

307

308 I have indeed corresponded with Ross Anderson about the use of Serpent

309 in secnet, and have updated the source comments to reflect the licence

310 upgrade.

311

312

313 sha1.c

314 ------

315

316 Authored by Steve Reid and modified by James H. Brown,

317 Saul Kravitz, and Ian Jackson.

318

319 100% Public Domain

320

321 I interpet this as a blanket permision.

322

323

324 sha512.[ch]

325 -----------

326

328

329 This program is free software: you can redistribute it and/or modify

330 it under the terms of the GNU General Public License as published by

331 the Free Software Foundation, either version 3 of the License, or

332 (at your option) any later version.

333

334 This program is distributed in the hope that it will be useful,

335 but WITHOUT ANY WARRANTY; without even the implied warranty of

336 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

337 GNU General Public License for more details.

338

339 Written by David Madore, considerably copypasting from

340 Scott G. Miller's sha1.c

341

342

343 subdirmk/

344 ---------

345

348

349 subdirmk and its example is free software; you can redistribute it

350 and/or modify it under the terms of the GNU Library General Public

351 License as published by the Free Software Foundation; either

352 version 2 of the License, or (at your option) any later version.

353

354 This is distributed in the hope that it will be useful, but

355 WITHOUT ANY WARRANTY; without even the implied warranty of

356 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

357 Library General Public License for more details.

358

359 You should have received a copy of the GNU Library General Public

360 License along with this library as the file LGPL-2.

361 If not, see https://www.gnu.org/.

362

363 A copy of this licence can be found on Debian systems (and

364 derivatives) in /usr/share/common-licenses/LGPL-3.

365

366

367

368 u64.h

369 -----

370

371 uint64_t-like operations that work even on hosts lacking uint64_t

372

374

375 This program is free software: you can redistribute it and/or modify

376 it under the terms of the GNU General Public License as published by

377 the Free Software Foundation, either version 3 of the License, or

378 (at your option) any later version.

379

380 This program is distributed in the hope that it will be useful,

381 but WITHOUT ANY WARRANTY; without even the implied warranty of

382 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

383 GNU General Public License for more details.

384

385 Written by Paul Eggert.