feat(ssl): Restructure ssl folder

Put mbedtls, axtls, openssl to ssl, also add kconfig to choose ssl library.
Default use mbedtls.

components/ssl/openssl/include/internal/ssl_code.h

@@ -0,0 +1,124 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _SSL_CODE_H_
+#define _SSL_CODE_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#include "ssl3.h"
+#include "tls1.h"
+#include "x509_vfy.h"
+
+/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
+# define SSL_SENT_SHUTDOWN       1
+# define SSL_RECEIVED_SHUTDOWN   2
+
+# define SSL_VERIFY_NONE                 0x00
+# define SSL_VERIFY_PEER                 0x01
+# define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
+# define SSL_VERIFY_CLIENT_ONCE          0x04
+
+/*
+ * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
+ * should not need these
+ */
+# define SSL_ST_READ_HEADER                      0xF0
+# define SSL_ST_READ_BODY                        0xF1
+# define SSL_ST_READ_DONE                        0xF2
+
+# define SSL_NOTHING            1
+# define SSL_WRITING            2
+# define SSL_READING            3
+# define SSL_X509_LOOKUP        4
+# define SSL_ASYNC_PAUSED       5
+# define SSL_ASYNC_NO_JOBS      6
+
+
+# define SSL_ERROR_NONE                  0
+# define SSL_ERROR_SSL                   1
+# define SSL_ERROR_WANT_READ             2
+# define SSL_ERROR_WANT_WRITE            3
+# define SSL_ERROR_WANT_X509_LOOKUP      4
+# define SSL_ERROR_SYSCALL               5/* look at error stack/return value/errno */
+# define SSL_ERROR_ZERO_RETURN           6
+# define SSL_ERROR_WANT_CONNECT          7
+# define SSL_ERROR_WANT_ACCEPT           8
+# define SSL_ERROR_WANT_ASYNC            9
+# define SSL_ERROR_WANT_ASYNC_JOB       10
+
+/* Message flow states */
+typedef enum {
+    /* No handshake in progress */
+    MSG_FLOW_UNINITED,
+    /* A permanent error with this connection */
+    MSG_FLOW_ERROR,
+    /* We are about to renegotiate */
+    MSG_FLOW_RENEGOTIATE,
+    /* We are reading messages */
+    MSG_FLOW_READING,
+    /* We are writing messages */
+    MSG_FLOW_WRITING,
+    /* Handshake has finished */
+    MSG_FLOW_FINISHED
+} MSG_FLOW_STATE;
+
+/* SSL subsystem states */
+typedef enum {
+    TLS_ST_BEFORE,
+    TLS_ST_OK,
+    DTLS_ST_CR_HELLO_VERIFY_REQUEST,
+    TLS_ST_CR_SRVR_HELLO,
+    TLS_ST_CR_CERT,
+    TLS_ST_CR_CERT_STATUS,
+    TLS_ST_CR_KEY_EXCH,
+    TLS_ST_CR_CERT_REQ,
+    TLS_ST_CR_SRVR_DONE,
+    TLS_ST_CR_SESSION_TICKET,
+    TLS_ST_CR_CHANGE,
+    TLS_ST_CR_FINISHED,
+    TLS_ST_CW_CLNT_HELLO,
+    TLS_ST_CW_CERT,
+    TLS_ST_CW_KEY_EXCH,
+    TLS_ST_CW_CERT_VRFY,
+    TLS_ST_CW_CHANGE,
+    TLS_ST_CW_NEXT_PROTO,
+    TLS_ST_CW_FINISHED,
+    TLS_ST_SW_HELLO_REQ,
+    TLS_ST_SR_CLNT_HELLO,
+    DTLS_ST_SW_HELLO_VERIFY_REQUEST,
+    TLS_ST_SW_SRVR_HELLO,
+    TLS_ST_SW_CERT,
+    TLS_ST_SW_KEY_EXCH,
+    TLS_ST_SW_CERT_REQ,
+    TLS_ST_SW_SRVR_DONE,
+    TLS_ST_SR_CERT,
+    TLS_ST_SR_KEY_EXCH,
+    TLS_ST_SR_CERT_VRFY,
+    TLS_ST_SR_NEXT_PROTO,
+    TLS_ST_SR_CHANGE,
+    TLS_ST_SR_FINISHED,
+    TLS_ST_SW_SESSION_TICKET,
+    TLS_ST_SW_CERT_STATUS,
+    TLS_ST_SW_CHANGE,
+    TLS_ST_SW_FINISHED
+} OSSL_HANDSHAKE_STATE;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif