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/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef OPENSSL_HEADER_TOOL_TRANSPORT_COMMON_H
#define OPENSSL_HEADER_TOOL_TRANSPORT_COMMON_H
#include <openssl/ssl.h>
#include <string.h>
#include <string>
// InitSocketLibrary calls the Windows socket init functions, if needed.
bool InitSocketLibrary();
// Connect sets |*out_sock| to be a socket connected to the destination given
// in |hostname_and_port|, which should be of the form "www.example.com:123".
// It returns true on success and false otherwise.
bool Connect(int *out_sock, const std::string &hostname_and_port);
class Listener {
public:
Listener() {}
~Listener();
// Init initializes the listener to listen on |port|, which should be of the
// form "123".
bool Init(const std::string &port);
// Accept sets |*out_sock| to be a socket connected to the listener.
bool Accept(int *out_sock);
private:
int server_sock_ = -1;
Listener(const Listener &) = delete;
Listener &operator=(const Listener &) = delete;
};
bool VersionFromString(uint16_t *out_version, const std::string &version);
void PrintConnectionInfo(BIO *bio, const SSL *ssl);
bool SocketSetNonBlocking(int sock, bool is_non_blocking);
// PrintSSLError prints information about the most recent SSL error to stderr.
// |ssl_err| must be the output of |SSL_get_error| and the |SSL| object must be
// connected to socket from |Connect|.
void PrintSSLError(FILE *file, const char *msg, int ssl_err, int ret);
bool TransferData(SSL *ssl, int sock);
// DoSMTPStartTLS performs the SMTP STARTTLS mini-protocol over |sock|. It
// returns true on success and false otherwise.
bool DoSMTPStartTLS(int sock);
// DoHTTPTunnel sends an HTTP CONNECT request over |sock|. It returns true on
// success and false otherwise.
bool DoHTTPTunnel(int sock, const std::string &hostname_and_port);
#endif // !OPENSSL_HEADER_TOOL_TRANSPORT_COMMON_H
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