forked from latticeware/Cytoplasm
Jordan Bancino
461357b526
This makes it easier to build Cytoplasm as a component of another program (for example, Telodendria), or as a standalone system library.
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2022-2024 Jordan Bancino <@jordan:bancino.net>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation files
|
|
* (the "Software"), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
#ifndef CYTOPLASM_TLS_H
|
|
#define CYTOPLASM_TLS_H
|
|
|
|
/***
|
|
* @Nm Tls
|
|
* @Nd Interface to platform-dependent TLS libraries.
|
|
* @Dd April 29 2023
|
|
* @Xr Stream Io
|
|
*
|
|
* .Nm
|
|
* provides an interface to platform-dependent TLS libraries. It allows
|
|
* Cytoplasm to support any TLS library with no changes to existing
|
|
* code. Support for additional TLS libraries is added by creating a
|
|
* new compilation unit that implements all the functions here, with
|
|
* the exception of a few, which are noted.
|
|
* .Pp
|
|
* Currently, Cytoplasm has support for the following TLS libraries:
|
|
* .Bl -bullet -offset indent
|
|
* .It
|
|
* LibreSSL
|
|
* .It
|
|
* OpenSSL
|
|
* .El
|
|
*/
|
|
|
|
#include "Stream.h"
|
|
|
|
#define TLS_LIBRESSL 2
|
|
#define TLS_OPENSSL 3
|
|
|
|
/**
|
|
* Create a new TLS client stream using the given file descriptor and
|
|
* the given server hostname. The hostname should be used to verify
|
|
* that the server actually is who it says it is.
|
|
* .Pp
|
|
* This function does not need to be implemented by the individual
|
|
* TLS support stubs.
|
|
*/
|
|
extern Stream * TlsClientStream(int, const char *);
|
|
|
|
/**
|
|
* Create a new TLS server stream using the given certificate and key
|
|
* file, in the format natively supported by the TLS library.
|
|
* .Pp
|
|
* This function does not need to be implemented by the individual
|
|
* TLS support stubs.
|
|
*/
|
|
extern Stream * TlsServerStream(int, const char *, const char *);
|
|
|
|
/**
|
|
* Initialize a cookie that stores information about the given client
|
|
* connection. This cookie will be passed into the other functions
|
|
* defined by this API.
|
|
*/
|
|
extern void * TlsInitClient(int, const char *);
|
|
|
|
/**
|
|
* Initialize a cookie that stores information about the given
|
|
* server connection. This cookie will be passed into the other
|
|
* functions defined by this API.
|
|
*/
|
|
extern void * TlsInitServer(int, const char *, const char *);
|
|
|
|
/**
|
|
* Read from a TLS stream, decrypting it and storing the result in the
|
|
* specified buffer. This function takes the cookie, buffer, and
|
|
* number of decrypted bytes to read into it. See the documentation for
|
|
* .Fn IoRead .
|
|
*/
|
|
extern ssize_t TlsRead(void *, void *, size_t);
|
|
|
|
/**
|
|
* Write to a TLS stream, encrypting the buffer. This function takes
|
|
* the cookie, buffer, and number of unencrypted bytes to write to
|
|
* the stream. See the documentation for
|
|
* .Fn IoWrite .
|
|
*/
|
|
extern ssize_t TlsWrite(void *, void *, size_t);
|
|
|
|
/**
|
|
* Close the TLS stream, also freeing all memory associated with the
|
|
* cookie.
|
|
*/
|
|
extern int TlsClose(void *);
|
|
|
|
#endif /* CYTOPLASM_TLS_H */
|