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GnuTLS: Backend support for CURLINFO_SSL_VERIFYRESULT

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Closes #5287
This commit is contained in:
Emil Engler 2020-04-23 21:36:35 +02:00 committed by Daniel Stenberg
parent c069027139
commit 42d8d9a7e8
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GPG Key ID: 5CC908FDB71E12C2
3 changed files with 24 additions and 5 deletions
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4
docs/KNOWN_BUGS
View File

@ -200,8 +200,8 @@ problems may have been fixed or changed somewhat since this was written!
2.1 CURLINFO_SSL_VERIFYRESULT has limited support
CURLINFO_SSL_VERIFYRESULT is only implemented for the OpenSSL and NSS
backends, so relying on this information in a generic app is flaky.
CURLINFO_SSL_VERIFYRESULT is only implemented for the OpenSSL, NSS and
GnuTLS backends, so relying on this information in a generic app is flaky.
2.2 DER in keychain

2
docs/libcurl/opts/CURLINFO_SSL_VERIFYRESULT.3
View File

@ -50,7 +50,7 @@ if(curl) {
}
.fi
.SH AVAILABILITY
Added in 7.5. Only set by the OpenSSL/libressl/boringssl and NSS backends.
Added in 7.5. Only set by the OpenSSL/libressl/boringssl, NSS and GnuTLS backends.
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"

23
lib/vtls/gtls.c
View File

@ -401,6 +401,8 @@ gtls_connect_step1(struct connectdata *conn,
const char *err = NULL;
const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
conn->host.name;
long * const certverifyresult = SSL_IS_PROXY() ?
&data->set.proxy_ssl.certverifyresult : &data->set.ssl.certverifyresult;
if(connssl->state == ssl_connection_complete)
/* to make us tolerant against being called more than once for the
@ -410,6 +412,9 @@ gtls_connect_step1(struct connectdata *conn,
if(!gtls_inited)
Curl_gtls_init();
/* Initalize certverifyresult to OK */
*certverifyresult = 0;
if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
failf(data, "GnuTLS does not support SSLv2");
return CURLE_SSL_CONNECT_ERROR;
@ -458,8 +463,10 @@ gtls_connect_step1(struct connectdata *conn,
if(rc < 0) {
infof(data, "error reading ca cert file %s (%s)\n",
SSL_CONN_CONFIG(CAfile), gnutls_strerror(rc));
if(SSL_CONN_CONFIG(verifypeer))
if(SSL_CONN_CONFIG(verifypeer)) {
*certverifyresult = rc;
return CURLE_SSL_CACERT_BADFILE;
}
}
else
infof(data, "found %d certificates in %s\n", rc,
@ -474,8 +481,10 @@ gtls_connect_step1(struct connectdata *conn,
if(rc < 0) {
infof(data, "error reading ca cert file %s (%s)\n",
SSL_CONN_CONFIG(CApath), gnutls_strerror(rc));
if(SSL_CONN_CONFIG(verifypeer))
if(SSL_CONN_CONFIG(verifypeer)) {
*certverifyresult = rc;
return CURLE_SSL_CACERT_BADFILE;
}
}
else
infof(data, "found %d certificates in %s\n",
@ -821,6 +830,8 @@ gtls_connect_step3(struct connectdata *conn,
#endif
const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
conn->host.name;
long * const certverifyresult = SSL_IS_PROXY() ?
&data->set.proxy_ssl.certverifyresult : &data->set.ssl.certverifyresult;
/* the name of the cipher suite used, e.g. ECDHE_RSA_AES_256_GCM_SHA384. */
ptr = gnutls_cipher_suite_get_name(gnutls_kx_get(session),
@ -852,6 +863,7 @@ gtls_connect_step3(struct connectdata *conn,
else {
#endif
failf(data, "failed to get server cert");
*certverifyresult = GNUTLS_E_NO_CERTIFICATE_FOUND;
return CURLE_PEER_FAILED_VERIFICATION;
#ifdef USE_TLS_SRP
}
@ -888,9 +900,12 @@ gtls_connect_step3(struct connectdata *conn,
rc = gnutls_certificate_verify_peers2(session, &verify_status);
if(rc < 0) {
failf(data, "server cert verify failed: %d", rc);
*certverifyresult = rc;
return CURLE_SSL_CONNECT_ERROR;
}
*certverifyresult = verify_status;
/* verify_status is a bitmask of gnutls_certificate_status bits */
if(verify_status & GNUTLS_CERT_INVALID) {
if(SSL_CONN_CONFIG(verifypeer)) {
@ -1119,6 +1134,7 @@ gtls_connect_step3(struct connectdata *conn,
if(certclock == (time_t)-1) {
if(SSL_CONN_CONFIG(verifypeer)) {
failf(data, "server cert expiration date verify failed");
*certverifyresult = GNUTLS_CERT_EXPIRED;
gnutls_x509_crt_deinit(x509_cert);
return CURLE_SSL_CONNECT_ERROR;
}
@ -1129,6 +1145,7 @@ gtls_connect_step3(struct connectdata *conn,
if(certclock < time(NULL)) {
if(SSL_CONN_CONFIG(verifypeer)) {
failf(data, "server certificate expiration date has passed.");
*certverifyresult = GNUTLS_CERT_EXPIRED;
gnutls_x509_crt_deinit(x509_cert);
return CURLE_PEER_FAILED_VERIFICATION;
}
@ -1144,6 +1161,7 @@ gtls_connect_step3(struct connectdata *conn,
if(certclock == (time_t)-1) {
if(SSL_CONN_CONFIG(verifypeer)) {
failf(data, "server cert activation date verify failed");
*certverifyresult = GNUTLS_CERT_NOT_ACTIVATED;
gnutls_x509_crt_deinit(x509_cert);
return CURLE_SSL_CONNECT_ERROR;
}
@ -1154,6 +1172,7 @@ gtls_connect_step3(struct connectdata *conn,
if(certclock > time(NULL)) {
if(SSL_CONN_CONFIG(verifypeer)) {
failf(data, "server certificate not activated yet.");
*certverifyresult = GNUTLS_CERT_NOT_ACTIVATED;
gnutls_x509_crt_deinit(x509_cert);
return CURLE_PEER_FAILED_VERIFICATION;
}