wscript_configure_system_gnutls

   1 from waflib import Logs
   2 import os
   3
   4 def parse_version(v):
   5     return tuple(map(int, (v.split("."))))
   6
   7 gnutls_min_required_version = "3.6.13"
   8
   9 conf.CHECK_FUNCS('getrandom', headers='sys/random.h')
  10 if not conf.CONFIG_SET('HAVE_GETRANDOM'):
  11    gnutls_min_required_version = "3.7.2"
  12
  13 gnutls_required_version = gnutls_min_required_version
  14
  15 conf.CHECK_CFG(package='gnutls',
  16                args=('"gnutls >= %s" --cflags --libs' % gnutls_required_version),
  17                      msg='Checking for GnuTLS >= %s' % gnutls_required_version,
  18                      mandatory=True)
  19
  20 gnutls_version_str = conf.cmd_and_log(conf.env.PKGCONFIG + ['--modversion', 'gnutls']).strip()
  21 gnutls_version = parse_version(gnutls_version_str)
  22
  23 # Define gnutls as a system library
  24 conf.SET_TARGET_TYPE('gnutls', 'SYSLIB')
  25
  26 # Check for gnutls_aead_cipher_encryptv2
  27 #
  28 # This is available since version 3.6.10, but 3.6.10 has a bug which got fixed
  29 # in 3.6.11, see:
  30 #
  31 #     https://gitlab.com/gnutls/gnutls/-/merge_requests/1085
  32 #
  33 # 3.6.10 - 3.6.14 have a severe memory leak with AES-CCM
  34 #     https://gitlab.com/gnutls/gnutls/-/merge_requests/1278
  35 if (gnutls_version > parse_version('3.6.10')):
  36     if conf.CHECK_FUNCS_IN('gnutls_aead_cipher_encryptv2', 'gnutls'):
  37         conf.DEFINE('ALLOW_GNUTLS_AEAD_CIPHER_ENCRYPTV2_AES_GCM', 1)
  38         if (gnutls_version > parse_version('3.6.14')):
  39             conf.DEFINE('ALLOW_GNUTLS_AEAD_CIPHER_ENCRYPTV2_AES_CCM', 1)
  40
  41 # Check if gnutls has fips mode support
  42 # gnutls_fips140_mode_enabled() is available since 3.3.0
  43 fragment = '''
  44 #include <gnutls/gnutls.h>
  45 #include <stdlib.h>
  46
  47 int main(void)
  48 {
  49     unsigned int ok;
  50
  51     ok = gnutls_fips140_mode_enabled();
  52
  53     return !ok;
  54 }
  55 '''
  56
  57 os.environ['GNUTLS_FORCE_FIPS_MODE'] = '1'
  58 conf.CHECK_CODE(fragment,
  59                 'HAVE_GNUTLS_FIPS_MODE_SUPPORTED',
  60                 execute=True,
  61                 addmain=False,
  62                 add_headers=False,
  63                 lib='gnutls',
  64                 msg='Checking for gnutls fips mode support')
  65 del os.environ['GNUTLS_FORCE_FIPS_MODE']
  66
  67 if conf.CHECK_VALUEOF('GNUTLS_CIPHER_AES_128_CFB8', headers='gnutls/gnutls.h', lib='gnutls'):
  68     conf.DEFINE('HAVE_GNUTLS_AES_CFB8', 1)
  69 else:
  70     Logs.warn('No gnutls support for AES CFB8')
  71
  72 if conf.CHECK_VALUEOF('GNUTLS_MAC_AES_CMAC_128', headers='gnutls/gnutls.h', lib='gnutls'):
  73     conf.DEFINE('HAVE_GNUTLS_AES_CMAC', 1)
  74 else:
  75     Logs.warn('No gnutls support for AES CMAC')