Botan 2.19.2
Crypto and TLS for C&
tls_client.h
Go to the documentation of this file.
1/*
2* TLS Client
3* (C) 2004-2011 Jack Lloyd
4* 2016 Matthias Gierlings
5*
6* Botan is released under the Simplified BSD License (see license.txt)
7*/
8
9#ifndef BOTAN_TLS_CLIENT_H_
10#define BOTAN_TLS_CLIENT_H_
11
12#include <botan/tls_channel.h>
13#include <botan/tls_policy.h>
14#include <botan/credentials_manager.h>
15#include <vector>
16
17namespace Botan {
18
19namespace TLS {
20
21/**
22* SSL/TLS Client
23*/
25 {
26 public:
27
28 /**
29 * Set up a new TLS client session
30 *
31 * @param callbacks contains a set of callback function references
32 * required by the TLS client.
33 *
34 * @param session_manager manages session state
35 *
36 * @param creds manages application/user credentials
37 *
38 * @param policy specifies other connection policy information
39 *
40 * @param rng a random number generator
41 *
42 * @param server_info is identifying information about the TLS server
43 *
44 * @param offer_version specifies which version we will offer
45 * to the TLS server.
46 *
47 * @param next_protocols specifies protocols to advertise with ALPN
48 *
49 * @param reserved_io_buffer_size This many bytes of memory will
50 * be preallocated for the read and write buffers. Smaller
51 * values just mean reallocations and copies are more likely.
52 */
53 Client(Callbacks& callbacks,
54 Session_Manager& session_manager,
56 const Policy& policy,
58 const Server_Information& server_info = Server_Information(),
60 const std::vector<std::string>& next_protocols = {},
61 size_t reserved_io_buffer_size = TLS::Client::IO_BUF_DEFAULT_SIZE
62 );
63
64 /**
65 * DEPRECATED. This constructor is only provided for backward
66 * compatibility and should not be used in new code. It will be
67 * removed in a future release.
68 *
69 * Set up a new TLS client session
70 *
71 * @param data_output_fn is called with data for the outbound socket
72 *
73 * @param app_data_cb is called when new application data is received
74 *
75 * @param recv_alert_cb is called when a TLS alert is received
76 *
77 * @param hs_cb is called when a handshake is completed
78 *
79 * @param session_manager manages session state
80 *
81 * @param creds manages application/user credentials
82 *
83 * @param policy specifies other connection policy information
84 *
85 * @param rng a random number generator
86 *
87 * @param server_info is identifying information about the TLS server
88 *
89 * @param offer_version specifies which version we will offer
90 * to the TLS server.
91 *
92 * @param next_protocols specifies protocols to advertise with ALPN
93 *
94 * @param reserved_io_buffer_size This many bytes of memory will
95 * be preallocated for the read and write buffers. Smaller
96 * values just mean reallocations and copies are more likely.
97 */
98 BOTAN_DEPRECATED("Use TLS::Client(TLS::Callbacks ...)")
99 Client(output_fn data_output_fn,
100 data_cb app_data_cb,
101 alert_cb recv_alert_cb,
102 handshake_cb hs_cb,
103 Session_Manager& session_manager,
104 Credentials_Manager& creds,
105 const Policy& policy,
107 const Server_Information& server_info = Server_Information(),
109 const std::vector<std::string>& next_protocols = {},
110 size_t reserved_io_buffer_size = TLS::Client::IO_BUF_DEFAULT_SIZE
111 );
112
113 /**
114 * DEPRECATED. This constructor is only provided for backward
115 * compatibility and should not be used in new implementations.
116 */
117 BOTAN_DEPRECATED("Use TLS::Client(TLS::Callbacks ...)")
118 Client(output_fn out,
119 data_cb app_data_cb,
121 handshake_cb hs_cb,
122 handshake_msg_cb hs_msg_cb,
123 Session_Manager& session_manager,
124 Credentials_Manager& creds,
125 const Policy& policy,
127 const Server_Information& server_info = Server_Information(),
129 const std::vector<std::string>& next_protocols = {}
130 );
131
132 /**
133 * @return network protocol as advertised by the TLS server, if server sent the ALPN extension
134 */
135 std::string application_protocol() const override { return m_application_protocol; }
136 private:
137 void init(const Protocol_Version& protocol_version,
138 const std::vector<std::string>& next_protocols);
139
140 std::vector<X509_Certificate>
141 get_peer_cert_chain(const Handshake_State& state) const override;
142
143 void initiate_handshake(Handshake_State& state,
144 bool force_full_renegotiation) override;
145
146 void send_client_hello(Handshake_State& state,
147 bool force_full_renegotiation,
148 Protocol_Version version,
149 const std::string& srp_identifier = "",
150 const std::vector<std::string>& next_protocols = {});
151
152 void process_handshake_msg(const Handshake_State* active_state,
153 Handshake_State& pending_state,
155 const std::vector<uint8_t>& contents,
156 bool epoch0_restart) override;
157
158 Handshake_State* new_handshake_state(Handshake_IO* io) override;
159
160 Credentials_Manager& m_creds;
161 const Server_Information m_info;
162 std::string m_application_protocol;
163 };
164
165}
166
167}
168
169#endif
std::function< bool(const Session &)> handshake_cb
Definition: tls_channel.h:43
std::function< void(Alert, const uint8_t[], size_t)> alert_cb
Definition: tls_channel.h:42
std::function< void(const Handshake_Message &)> handshake_msg_cb
Definition: tls_channel.h:44
std::function< void(const uint8_t[], size_t)> output_fn
Definition: tls_channel.h:40
static size_t IO_BUF_DEFAULT_SIZE
Definition: tls_channel.h:45
std::function< void(const uint8_t[], size_t)> data_cb
Definition: tls_channel.h:41
std::string application_protocol() const override
Definition: tls_client.h:135
static Protocol_Version latest_tls_version()
Definition: tls_version.h:36
int(* init)(CTX *)
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
Definition: alg_id.cpp:13
MechanismType type