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5512416a8f
The memory leak bug up to 3.6.14 was only related to ccm, but gcm was fine. This avoids talloc+memcpy on more systems, e.g. ubuntu 20.04, and brings ~ 20% less cpu overhead, see: https://hackmd.io/@asn/samba_crypto_benchmarks BUG: https://bugzilla.samba.org/show_bug.cgi?id=14764 Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Andreas Schneider <asn@samba.org>
78 lines
2.5 KiB
Plaintext
78 lines
2.5 KiB
Plaintext
from waflib import Options
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import os
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def parse_version(v):
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return tuple(map(int, (v.split("."))))
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gnutls_min_required_version = "3.4.7"
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gnutls_required_version = gnutls_min_required_version
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conf.CHECK_CFG(package='gnutls',
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args=('"gnutls >= %s" --cflags --libs' % gnutls_required_version),
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msg='Checking for GnuTLS >= %s' % gnutls_required_version,
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mandatory=True)
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gnutls_version_str = conf.cmd_and_log(conf.env.PKGCONFIG + ['--modversion', 'gnutls']).strip()
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gnutls_version = parse_version(gnutls_version_str)
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# Define gnutls as a system library
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conf.SET_TARGET_TYPE('gnutls', 'SYSLIB')
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# Check for gnutls_pkcs7_get_embedded_data_oid (>= 3.5.5) required by libmscat
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conf.CHECK_FUNCS_IN('gnutls_pkcs7_get_embedded_data_oid', 'gnutls')
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# Check for gnutls_set_default_priority_append (>= 3.6.3)
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conf.CHECK_FUNCS_IN('gnutls_set_default_priority_append', 'gnutls')
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# Check for gnutls_aead_cipher_encryptv2
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#
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# This is available since version 3.6.10, but 3.6.10 has a bug which got fixed
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# in 3.6.11, see:
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#
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# https://gitlab.com/gnutls/gnutls/-/merge_requests/1085
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#
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# 3.6.10 - 3.6.14 have a severe memory leak with AES-CCM
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# https://gitlab.com/gnutls/gnutls/-/merge_requests/1278
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if (gnutls_version > parse_version('3.6.10')):
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if conf.CHECK_FUNCS_IN('gnutls_aead_cipher_encryptv2', 'gnutls'):
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conf.DEFINE('ALLOW_GNUTLS_AEAD_CIPHER_ENCRYPTV2_AES_GCM', 1)
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if (gnutls_version > parse_version('3.6.14')):
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conf.DEFINE('ALLOW_GNUTLS_AEAD_CIPHER_ENCRYPTV2_AES_CCM', 1)
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# Check if gnutls has fips mode support
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# gnutls_fips140_mode_enabled() is available since 3.3.0
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fragment = '''
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#include <gnutls/gnutls.h>
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#include <stdlib.h>
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int main(void)
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{
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unsigned int ok;
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ok = gnutls_fips140_mode_enabled();
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return !ok;
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}
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'''
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os.environ['GNUTLS_FORCE_FIPS_MODE'] = '1'
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conf.CHECK_CODE(fragment,
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'HAVE_GNUTLS_FIPS_MODE_SUPPORTED',
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execute=True,
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addmain=False,
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add_headers=False,
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lib='gnutls',
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msg='Checking for gnutls fips mode support')
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del os.environ['GNUTLS_FORCE_FIPS_MODE']
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if conf.CHECK_VALUEOF('GNUTLS_CIPHER_AES_128_CFB8', headers='gnutls/gnutls.h'):
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conf.DEFINE('HAVE_GNUTLS_AES_CFB8', 1)
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else:
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Logs.warn('No gnutls support for AES CFB8')
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if conf.CHECK_VALUEOF('GNUTLS_MAC_AES_CMAC_128', headers='gnutls/gnutls.h'):
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conf.DEFINE('HAVE_GNUTLS_AES_CMAC', 1)
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else:
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Logs.warn('No gnutls support for AES CMAC')
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