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Description: Support OpenSSL 1.1
When building with OpenSSL 1.1 and newer, use the new built-in
hostname verification instead of code that doesn't compile due to
structs having been made opaque.
Bug-Debian: https://bugs.debian.org/828589
--- a/src/osdep/unix/ssl_unix.c
+++ b/src/osdep/unix/ssl_unix.c
@@ -227,8 +227,16 @@ static char *ssl_start_work (SSLSTREAM *
/* disable certificate validation? */
if (flags & NET_NOVALIDATECERT)
SSL_CTX_set_verify (stream->context,SSL_VERIFY_NONE,NIL);
- else SSL_CTX_set_verify (stream->context,SSL_VERIFY_PEER,ssl_open_verify);
+ else {
+#if OPENSSL_VERSION_NUMBER >= 0x10100000
+ X509_VERIFY_PARAM *param = SSL_CTX_get0_param(stream->context);
+ X509_VERIFY_PARAM_set_hostflags(param, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
+ X509_VERIFY_PARAM_set1_host(param, host, 0);
+#endif
+
+ SSL_CTX_set_verify (stream->context,SSL_VERIFY_PEER,ssl_open_verify);
/* set default paths to CAs... */
+ }
SSL_CTX_set_default_verify_paths (stream->context);
/* ...unless a non-standard path desired */
if (s = (char *) mail_parameters (NIL,GET_SSLCAPATH,NIL))
@@ -266,6 +274,7 @@ static char *ssl_start_work (SSLSTREAM *
if (SSL_write (stream->con,"",0) < 0)
return ssl_last_error ? ssl_last_error : "SSL negotiation failed";
/* need to validate host names? */
+#if OPENSSL_VERSION_NUMBER < 0x10100000
if (!(flags & NET_NOVALIDATECERT) &&
(err = ssl_validate_cert (cert = SSL_get_peer_certificate (stream->con),
host))) {
@@ -275,6 +284,7 @@ static char *ssl_start_work (SSLSTREAM *
sprintf (tmp,"*%.128s: %.255s",err,cert ? cert->name : "???");
return ssl_last_error = cpystr (tmp);
}
+#endif
return NIL;
}
@@ -313,6 +323,7 @@ static int ssl_open_verify (int ok,X509_
* Returns: NIL if validated, else string of error message
*/
+#if OPENSSL_VERSION_NUMBER < 0x10100000
static char *ssl_validate_cert (X509 *cert,char *host)
{
int i,n;
@@ -342,6 +353,7 @@ static char *ssl_validate_cert (X509 *ce
else ret = "Unable to locate common name in certificate";
return ret;
}
+#endif
/* Case-independent wildcard pattern match
* Accepts: base string
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