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gnutls: Support CURLOPT_KEYPASSWD

The gnutls vtls back-end was previously ignoring any password set via
CURLOPT_KEYPASSWD. Presumably this was because
gnutls_certificate_set_x509_key_file did not support encrypted keys.

gnutls now has a gnutls_certificate_set_x509_key_file2 function that
does support encrypted keys. Let's determine at compile time whether the
available gnutls supports this new function. If it does then use it to
pass the password. If it does not then emit a helpful diagnostic if a
password is set. This is preferable to the previous behaviour of just
failing to read the certificate without giving a reason in that case.

Signed-off-by: Mike Crowe <mac@mcrowe.com>
This commit is contained in:
Mike Crowe 2015-09-21 11:34:55 +02:00 committed by Daniel Stenberg
parent 7362008c1c
commit 6b56901b56
2 changed files with 37 additions and 9 deletions

View File

@ -1836,6 +1836,7 @@ if test "$curl_ssl_msg" = "$init_ssl_msg"; then
AC_MSG_NOTICE([Added $gtlslib to LD_LIBRARY_PATH])
fi
fi
AC_CHECK_FUNCS(gnutls_certificate_set_x509_key_file2)
fi
fi

View File

@ -656,6 +656,32 @@ gtls_connect_step1(struct connectdata *conn,
#endif
if(data->set.str[STRING_CERT]) {
if(data->set.str[STRING_KEY_PASSWD]) {
#if HAVE_GNUTLS_CERTIFICATE_SET_X509_KEY_FILE2
const unsigned int supported_key_encryption_algorithms =
GNUTLS_PKCS_USE_PKCS12_3DES | GNUTLS_PKCS_USE_PKCS12_ARCFOUR |
GNUTLS_PKCS_USE_PKCS12_RC2_40 | GNUTLS_PKCS_USE_PBES2_3DES |
GNUTLS_PKCS_USE_PBES2_AES_128 | GNUTLS_PKCS_USE_PBES2_AES_192 |
GNUTLS_PKCS_USE_PBES2_AES_256;
if(gnutls_certificate_set_x509_key_file2(
conn->ssl[sockindex].cred,
data->set.str[STRING_CERT],
data->set.str[STRING_KEY] ?
data->set.str[STRING_KEY] : data->set.str[STRING_CERT],
do_file_type(data->set.str[STRING_CERT_TYPE]),
data->set.str[STRING_KEY_PASSWD],
supported_key_encryption_algorithms) !=
GNUTLS_E_SUCCESS) {
failf(data,
"error reading X.509 potentially-encrypted key file");
return CURLE_SSL_CONNECT_ERROR;
#else
failf(data, "gnutls lacks support for encrypted key files");
return CURLE_SSL_CONNECT_ERROR;
#endif
}
}
else {
if(gnutls_certificate_set_x509_key_file(
conn->ssl[sockindex].cred,
data->set.str[STRING_CERT],
@ -667,6 +693,7 @@ gtls_connect_step1(struct connectdata *conn,
return CURLE_SSL_CONNECT_ERROR;
}
}
}
#ifdef USE_TLS_SRP
/* put the credentials to the current session */