diff options
| -rw-r--r-- | lib/vtls/openssl.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c index 7c6854d1f..fb725716c 100644 --- a/lib/vtls/openssl.c +++ b/lib/vtls/openssl.c @@ -2773,19 +2773,27 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex) infof(data, " CRLfile: %s\n", ssl_crlfile); } - /* Try building a chain using issuers in the trusted store first to avoid - problems with server-sent legacy intermediates. Newer versions of - OpenSSL do alternate chain checking by default which gives us the same - fix without as much of a performance hit (slight), so we prefer that if - available. - https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest - */ -#if defined(X509_V_FLAG_TRUSTED_FIRST) && !defined(X509_V_FLAG_NO_ALT_CHAINS) if(verifypeer) { + /* Try building a chain using issuers in the trusted store first to avoid + problems with server-sent legacy intermediates. Newer versions of + OpenSSL do alternate chain checking by default which gives us the same + fix without as much of a performance hit (slight), so we prefer that if + available. + https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest + */ +#if defined(X509_V_FLAG_TRUSTED_FIRST) && !defined(X509_V_FLAG_NO_ALT_CHAINS) X509_STORE_set_flags(SSL_CTX_get_cert_store(BACKEND->ctx), X509_V_FLAG_TRUSTED_FIRST); - } #endif +#ifdef X509_V_FLAG_PARTIAL_CHAIN + /* Have intermediate certificates in the trust store be treated as + trust-anchors, in the same way as self-signed root CA certificates + are. This allows users to verify servers using the intermediate cert + only, instead of needing the whole chain. */ + X509_STORE_set_flags(SSL_CTX_get_cert_store(BACKEND->ctx), + X509_V_FLAG_PARTIAL_CHAIN); +#endif + } /* SSL always tries to verify the peer, this only says whether it should * fail to connect if the verification fails, or if it should continue |