1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2021 The Pigweed Authors
//
// 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
//
// https://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.
#pragma once
#include "pw_preprocessor/compiler.h"
PW_MODIFY_DIAGNOSTICS_PUSH();
PW_MODIFY_DIAGNOSTIC(ignored, "-Wswitch-enum");
#include "mbedtls/certs.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/entropy.h"
#include "mbedtls/error.h"
#include "mbedtls/ssl.h"
PW_MODIFY_DIAGNOSTICS_POP();
#include "pw_status/status.h"
#include "pw_tls_client/options.h"
namespace pw::tls_client::backend {
class SessionImplementation {
public:
SessionImplementation(SessionOptions options);
~SessionImplementation();
Status Setup();
void SetTlsStatus(TLSStatus status) { tls_status_ = status; }
TLSStatus GetTlsStatus() { return tls_status_; }
// The method is for test only. When given a non-Ok status, it will override
// the status returned by entropy source pw::tls_client::GetRandomBytes();
static void SetEntropySourceStatus(Status status);
private:
// mbedtls entropy
mbedtls_entropy_context entropy_ctx_;
mbedtls_ctr_drbg_context drbg_ctx_;
// SSL data structure
mbedtls_ssl_context ssl_ctx_;
// Configuration data structure
mbedtls_ssl_config ssl_config_;
// A copy of the option when creating the client.
SessionOptions session_options_;
TLSStatus tls_status_ = TLSStatus::kOk;
static int MbedTlsWrite(void* ctx, const uint8_t* buf, size_t len);
static int MbedTlsRead(void* ctx, unsigned char* buf, size_t len);
static int MbedTlsEntropySource(void* ctx,
unsigned char* out,
size_t len,
size_t* output_length);
static Status entropy_source_status_;
};
} // namespace pw::tls_client::backend
|
