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/cvs/gvpe/configure.ac
(Generate patch)

Comparing gvpe/configure.ac (file contents):
Revision 1.60 by root, Wed Jul 10 01:51:40 2013 UTC vs.
Revision 1.67 by root, Thu Oct 25 07:31:58 2018 UTC

1dnl Process this file with autoconf to produce a configure script. 1dnl Process this file with autoconf to produce a configure script.
2 2
3AC_PREREQ(2.69) 3AC_PREREQ(2.69)
4AC_INIT 4AC_INIT(gvpe, 3.1)
5AC_CONFIG_SRCDIR([src/gvpe.C]) 5AC_CONFIG_SRCDIR([src/gvpe.C])
6AC_CANONICAL_TARGET 6AC_CANONICAL_TARGET
7AM_INIT_AUTOMAKE(gvpe, 2.24) 7AM_INIT_AUTOMAKE
8AC_CONFIG_HEADERS([config.h]) 8AC_CONFIG_HEADERS([config.h])
9AM_MAINTAINER_MODE 9AM_MAINTAINER_MODE
10 10
11AH_TOP([ 11AH_TOP([
12#ifndef CONFIG_H__ 12#ifndef CONFIG_H__
… …
234AC_CACHE_SAVE 234AC_CACHE_SAVE
235 235
236dnl These are defined in files in m4/ 236dnl These are defined in files in m4/
237tinc_TUNTAP 237tinc_TUNTAP
238 238
239tinc_OPENSSL 239PKG_CHECK_MODULES([LIBCRYPTO], [libcrypto >= 1])
240if test "x$openssl_include" != x; then
241 CXXFLAGS="$CXXFLAGS -I$openssl_include"
242fi
243dnl tinc_ZLIB
244 240
245AC_ARG_ENABLE(threads, 241AC_ARG_ENABLE(threads,
246 [AS_HELP_STRING(--enable-threads,try to use threads for long-running asynchronous operations (default enabled).)], 242 [AS_HELP_STRING(--enable-threads,try to use threads for long-running asynchronous operations (default enabled).)],
247 [try_threads=$enableval], 243 [try_threads=$enableval],
248 [try_threads=yes] 244 [try_threads=yes]
… …
327 323
328 AC_DEFINE_UNQUOTED(ENABLE_DNS, 1, [DNS tunnel protocol support.]) 324 AC_DEFINE_UNQUOTED(ENABLE_DNS, 1, [DNS tunnel protocol support.])
329 ] 325 ]
330) 326)
331 327
328RSA=3072
329AC_ARG_ENABLE(rsa-length,
330 [AS_HELP_STRING(--enable-rsa-length=BITS,[
331 use BITS rsa keys (default 3072). Allowed values are 2048-10240.])],
332 RSA=$enableval
333)
334AC_DEFINE_UNQUOTED(RSABITS, $RSA, [Size of RSA keys.])
335
332HMAC=12 336HMACSIZE=12
333AC_ARG_ENABLE(hmac-length, 337AC_ARG_ENABLE(hmac-length,
334 [AS_HELP_STRING(--enable-hmac-length=BYTES,[ 338 [AS_HELP_STRING(--enable-hmac-length=BYTES,[
335 use a hmac of length BYTES bytes (default 12). Allowed values are 4, 8, 12, 16.])], 339 use a hmac of length BYTES bytes (default 12). Allowed values are 4, 8, 12, 16.])],
336 HMAC=$enableval 340 HMACSIZE=$enableval
337) 341)
338AC_DEFINE_UNQUOTED(HMACLENGTH, $HMAC, [Size of HMAC in each packet in bytes.]) 342AC_DEFINE_UNQUOTED(HMACLENGTH, $HMACSIZE, [Size of HMAC in each packet in bytes.])
339
340RAND=8
341AC_ARG_ENABLE(rand-length,
342 [AS_HELP_STRING(--enable-rand-length=BYTES,
343 [use BYTES bytes of extra randomness (default 8). Allowed values are 0, 4, 8.])],
344 RAND=$enableval
345)
346AC_DEFINE_UNQUOTED(RAND_SIZE, $RAND, [Add this many bytes of randomness to each packet.])
347 343
348MTU=1500 344MTU=1500
349AC_ARG_ENABLE(max-mtu, 345AC_ARG_ENABLE(max-mtu,
350 [AS_HELP_STRING(--enable-max-mtu=BYTES,enable mtu sizes upto BYTES bytes (default 1500). Use 9100 for jumbogram support.)], 346 [AS_HELP_STRING(--enable-max-mtu=BYTES,enable mtu sizes upto BYTES bytes (default 1500). Use 9100 for jumbogram support.)],
351 MTU=$enableval 347 MTU=$enableval
… …
359 COMPRESS=0 355 COMPRESS=0
360 fi 356 fi
361) 357)
362AC_DEFINE_UNQUOTED(ENABLE_COMPRESSION, $COMPRESS, [Enable compression support.]) 358AC_DEFINE_UNQUOTED(ENABLE_COMPRESSION, $COMPRESS, [Enable compression support.])
363 359
364CIPHER=aes_128_cbc 360CIPHER=aes_128_ctr
365AC_ARG_ENABLE(cipher, 361AC_ARG_ENABLE(cipher,
366 [AS_HELP_STRING(--enable-cipher=CIPHER,[ 362 [AS_HELP_STRING(--enable-cipher=CIPHER,[
367 Select the symmetric cipher (default "aes-128"). 363 Select the symmetric cipher (default "aes-128").
368 Must be one of "bf" (blowfish), "aes-128" (rijndael), "aes-192" or "aes-256".])], 364 Must be one of "aes-128" (rijndael), "aes-192", or "aes-256".])],
369 if test "x$enableval" = xbf ; then CIPHER=bf_cbc ; fi 365 #if test "x$enableval" = xbf ; then CIPHER=bf_ctr ; fi
370 if test "x$enableval" = xaes-128; then CIPHER=aes_128_cbc; fi 366 if test "x$enableval" = xaes-128 ; then CIPHER=aes_128_ctr ; fi
371 if test "x$enableval" = xaes-192; then CIPHER=aes_192_cbc; fi 367 if test "x$enableval" = xaes-192 ; then CIPHER=aes_192_ctr ; fi
372 if test "x$enableval" = xaes-256; then CIPHER=aes_256_cbc; fi 368 if test "x$enableval" = xaes-256 ; then CIPHER=aes_256_ctr ; fi
369 #if test "x$enableval" = xcamellia-128; then CIPHER=camellia_128_ctr; fi
370 #if test "x$enableval" = xcamellia-256; then CIPHER=camellia_256_ctr; fi
373) 371)
374AC_DEFINE_UNQUOTED(ENABLE_CIPHER, EVP_${CIPHER}, [Select the symmetric cipher to use.]) 372AC_DEFINE_UNQUOTED(ENABLE_CIPHER, EVP_${CIPHER}, [Select the symmetric cipher to use.])
375 373
376DIGEST=ripemd160 374HMAC=sha1
377AC_ARG_ENABLE(digest, 375AC_ARG_ENABLE(hmac-digest,
378 [AS_HELP_STRING(--enable-digest=CIPHER,[ 376 [AS_HELP_STRING(--enable-hmac-digest=HMAC,[
379 Select the digest algorithm to use (default "ripemd160"). Must be one of 377 Select the HMAC digest algorithm to use (default "sha1"). Must be one of
380 "sha512", "sha256", "sha1" (somewhat insecure), "ripemd160", "md5" (insecure) or "md4" (insecure).])], 378 "sha512", "sha256", "sha1", "ripemd160", "whirlpool".])],
379 if test "x$enableval" = xwhirlpool; then HMAC=whirlpool; fi
380 if test "x$enableval" = xsha512 ; then HMAC=sha512 ; fi
381 if test "x$enableval" = xsha256 ; then HMAC=sha256 ; fi
382 if test "x$enableval" = xsha1 ; then HMAC=sha1 ; fi
383 if test "x$enableval" = xripemd160; then HMAC=ripemd160; fi
384)
385AC_DEFINE_UNQUOTED(ENABLE_HMAC, EVP_${HMAC}, [Select the HMAC digest algorithm to use.])
386
387AUTH=sha512
388AC_ARG_ENABLE(auth-digest,
389 [AS_HELP_STRING(--enable-auth-digest=DIGEST,[
390 Select the hmac algorithm to use (default "sha512"). Must be one of
391 "sha512", "sha256", "whirlpool".])],
392 if test "x$enableval" = xwhirlpool; then AUTH=whirlpool; fi
381 if test "x$enableval" = xsha512 ; then DIGEST=sha512 ; fi 393 if test "x$enableval" = xsha512 ; then AUTH=sha512 ; fi
382 if test "x$enableval" = xsha256 ; then DIGEST=sha256 ; fi 394 if test "x$enableval" = xsha256 ; then AUTH=sha256 ; fi
383 if test "x$enableval" = xsha1 ; then DIGEST=sha1 ; fi
384 if test "x$enableval" = xripemd160; then DIGEST=ripemd160; fi
385 if test "x$enableval" = xmd5 ; then DIGEST=md5 ; fi
386 if test "x$enableval" = xmd4 ; then DIGEST=md4 ; fi
387) 395)
388AC_DEFINE_UNQUOTED(ENABLE_DIGEST, EVP_${DIGEST}, [Select the digest algorithm to use.]) 396AC_DEFINE_UNQUOTED(ENABLE_AUTH, EVP_${AUTH}, [Select the auth digest algorithm to use.])
389 397
390if $CXX -v --help 2>&1 | grep -q fno-rtti; then 398if $CXX -v --help 2>&1 | grep -q fno-rtti; then
391 CXXFLAGS="$CXXFLAGS -fno-rtti" 399 CXXFLAGS="$CXXFLAGS -fno-rtti"
392fi 400fi
393 401
… …
398LIBS="$EXTRA_LIBS $LIBS" 406LIBS="$EXTRA_LIBS $LIBS"
399 407
400dnl if $CXX -v --help 2>&1 | grep -q ffunction-sections; then 408dnl if $CXX -v --help 2>&1 | grep -q ffunction-sections; then
401dnl CXXFLAGS="$CXXFLAGS -ffunction-sections" 409dnl CXXFLAGS="$CXXFLAGS -ffunction-sections"
402dnl fi 410dnl fi
403dnl 411dnl
404dnl if $LD -v --help 2>&1 | grep -q gc-sections; then 412dnl if $LD -v --help 2>&1 | grep -q gc-sections; then
405dnl LDFLAGS="$LDFLAGS -Wl,--gc-sections" 413dnl LDFLAGS="$LDFLAGS -Wl,--gc-sections"
406dnl fi 414dnl fi
407 415
408AC_SUBST(INCLUDES) 416AC_SUBST(AM_CPPFLAGS)
409 417
410AC_CONFIG_FILES([Makefile po/Makefile.in 418AC_CONFIG_FILES([Makefile po/Makefile.in
411src/Makefile 419src/Makefile
412doc/Makefile 420doc/Makefile
413lib/Makefile 421lib/Makefile
… …
418echo 426echo
419echo "***" 427echo "***"
420echo "*** Configuration Summary" 428echo "*** Configuration Summary"
421echo "***" 429echo "***"
422echo "*** Kernel Iface: $IFTYPE/$IFSUBTYPE" 430echo "*** Kernel Iface: $IFTYPE/$IFSUBTYPE"
431echo "*** RSA size: $RSA"
423echo "*** Cipher used: $CIPHER" 432echo "*** Cipher used: $CIPHER"
424echo "*** Digest used: $DIGEST" 433echo "*** Digest used: $DIGEST"
434echo "*** Authdigest: $AUTH"
425echo "*** HMAC length: $HMAC" 435echo "*** HMAC length: $HMAC"
426echo "*** RAND used: $RAND"
427echo "*** Max. MTU: $MTU" 436echo "*** Max. MTU: $MTU"
428 437
429echo "***" 438echo "***"
430echo "*** Enable options:" 439echo "*** Enable options:"
431grep ENABLE_ config.h | sed -e 's/^/*** /' 440grep ENABLE_ config.h | sed -e 's/^/*** /'
432 441
433if test "x$DIGEST" = xmd4; then 442if test "$HMACSIZE" -lt 12; then
434echo "***" 443echo "***"
435echo "*** WARNING: The digest you have chosen ($DIGEST) is known to be insecure"
436fi
437
438if test "x$DIGEST" = xmd5; then
439echo "***"
440echo "*** WARNING: The digest you have chosen ($DIGEST) is probably insecure"
441fi
442
443if test "$HMAC" -lt 12; then
444echo "***"
445echo "*** WARNING: The hmac length you have chosen ($HMAC) is probably insecure" 444echo "*** WARNING: The hmac length you have chosen ($HMACSIZE) is quite insecure"
446fi
447
448if test "$RAND" -lt 8; then
449echo "***"
450echo "*** WARNING: The random prefix you have chosen ($RAND) is probably insecure"
451fi 445fi
452 446
453echo "***" 447echo "***"
454echo 448echo
455 449
450if pkg-config --exists 'libcrypto >= 1.1 libcrypto < 2.0'; then
451 cat <<EOF
452@<:@33m
453***
454*** WARNING WARNING WARNING WARNING WARNING WARNING WARNING
455***
456*** You seem to configure gvpe with OpenSSL 1.1 or newer.
457*** While this probably compiles, please note that this is not only
458*** unsupported, but also discouraged.
459***
460*** It is recommended to use either OpenSSL 1.0, as long as that is still
461*** supported, or LibreSSL (https://www.libressl.org/).
462***
463*** This is not a political issue - while porting GVPE to the newer
464*** OpenSSL 1.1 API, I encountered two incompatible API changes that were
465*** not documented, were not caught while compiling but caused security
466*** issues. When reported, the reaction of the OpenSSL developers was to
467*** update the documentation.
468***
469*** As a result, I lost all confidence in the ability and desire of
470*** OpenSSL developers to create a safe API, and would highly recommend
471*** switching to LibreSSL which explicitly avoids such braking changes.
472***
473*** WARNING WARNING WARNING WARNING WARNING WARNING WARNING
474***
475*** Again, do not use OpenSSL 1.1 and complain if stuff breaks.
476*** You have been warned, but your choice is respected.
477***
478@<:@0m
456 479
480EOF
481fi
482
483

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