sstp: fix build w/o openssl

accel-pppd/ctrl/sstp/sstp.c

@@ -1492,10 +1492,15 @@ static int sstp_recv_msg_call_connected(struct sstp_conn_t *conn, struct sstp_ct
 	struct {
 		struct sstp_ctrl_hdr hdr;
 		struct sstp_attrib_crypto_binding attr;
-	} __attribute__((packed)) buf, *msg = (void *)hdr;
-	uint8_t md[EVP_MAX_MD_SIZE], hash, *ptr;
+	} __attribute__((packed)) *msg = (void *)hdr;
+	uint8_t hash;
+	unsigned int len;
+#ifdef CRYPTO_OPENSSL
+	typeof(*msg) buf;
+	uint8_t md[EVP_MAX_MD_SIZE], *ptr;
 	const EVP_MD *evp;
-	unsigned int len, mdlen;
+	unsigned int mdlen;
+#endif
 
 	if (conf_verbose)
 		log_ppp_info2("recv [SSTP SSTP_MSG_CALL_CONNECTED]\n");
@@ -1533,7 +1538,9 @@ static int sstp_recv_msg_call_connected(struct sstp_conn_t *conn, struct sstp_ct
 			log_ppp_error("sstp: invalid SHA256 Cert Hash");
 			return sstp_abort(conn, 0);
 		}
+#ifdef CRYPTO_OPENSSL
 		evp = EVP_sha256();
+#endif
 	} else if (hash & CERT_HASH_PROTOCOL_SHA1) {
 		len = SHA_DIGEST_LENGTH;
 		if (conf_hash_sha1.len == len &&
@@ -1541,13 +1548,16 @@ static int sstp_recv_msg_call_connected(struct sstp_conn_t *conn, struct sstp_ct
 			log_ppp_error("sstp: invalid SHA1 Cert Hash");
 			return sstp_abort(conn, 0);
 		}
+#ifdef CRYPTO_OPENSSL
 		evp = EVP_sha1();
+#endif
 	} else {
 		log_ppp_error("sstp: invalid Hash Protocol 0x%02x\n",
 				msg->attr.hash_protocol_bitmask);
 		return sstp_abort(conn, 0);
 	}
 
+#ifdef CRYPTO_OPENSSL
 	if (conn->hlak_key) {
 		ptr = mempcpy(md, SSTP_CMK_SEED, SSTP_CMK_SEED_SIZE);
 		*ptr++ = len;
@@ -1565,6 +1575,7 @@ static int sstp_recv_msg_call_connected(struct sstp_conn_t *conn, struct sstp_ct
 			return sstp_abort(conn, 0);
 		}
 	}
+#endif
 
 	conn->sstp_state = STATE_SERVER_CALL_CONNECTED;