[exim.git] / src / src / dane.c

/*************************************************
*     Exim - an Internet mail transport agent    *
*************************************************/

/* Copyright (c) University of Cambridge 1995 - 2012 */
/* See the file NOTICE for conditions of use and distribution. */

/* This module provides TLS (aka SSL) support for Exim. The code for OpenSSL is
based on a patch that was originally contributed by Steve Haslam. It was
adapted from stunnel, a GPL program by Michal Trojnara. The code for GNU TLS is
based on a patch contributed by Nikos Mavroyanopoulos. Because these packages
are so very different, the functions for each are kept in separate files. The
relevant file is #included as required, after any any common functions.

No cryptographic code is included in Exim. All this module does is to call
functions from the OpenSSL or GNU TLS libraries. */


#include "exim.h"

/* This module is compiled only when it is specifically requested in the
build-time configuration. However, some compilers don't like compiling empty
modules, so keep them happy with a dummy when skipping the rest. Make it
reference itself to stop picky compilers complaining that it is unused, and put
in a dummy argument to stop even pickier compilers complaining about infinite
loops. */

#ifndef EXPERIMENTAL_DANE
static void dummy(int x) { dummy(x-1); }
#else

/* Enabling DANE without enabling TLS cannot work. Abort the compilation. */
#ifndef SUPPORT_TLS
#error DANE support requires that TLS support must be enabled. Abort build.
#endif

#ifdef USE_GNUTLS
#include "dane-gnu.c"
#else
#include "dane-openssl.c"
#endif


#endif  /* EXPERIMENTAL_DANE */

/* End of dane.c */
Commit	Line	Data
e682570f TL	1	/*************************************************
	2	* Exim - an Internet mail transport agent *
	3	*************************************************/
	4
	5	/* Copyright (c) University of Cambridge 1995 - 2012 */
	6	/* See the file NOTICE for conditions of use and distribution. */
	7
	8	/* This module provides TLS (aka SSL) support for Exim. The code for OpenSSL is
	9	based on a patch that was originally contributed by Steve Haslam. It was
	10	adapted from stunnel, a GPL program by Michal Trojnara. The code for GNU TLS is
	11	based on a patch contributed by Nikos Mavroyanopoulos. Because these packages
	12	are so very different, the functions for each are kept in separate files. The
	13	relevant file is #included as required, after any any common functions.
	14
	15	No cryptographic code is included in Exim. All this module does is to call
	16	functions from the OpenSSL or GNU TLS libraries. */
	17
	18
	19	#include "exim.h"
	20
	21	/* This module is compiled only when it is specifically requested in the
	22	build-time configuration. However, some compilers don't like compiling empty
	23	modules, so keep them happy with a dummy when skipping the rest. Make it
	24	reference itself to stop picky compilers complaining that it is unused, and put
	25	in a dummy argument to stop even pickier compilers complaining about infinite
	26	loops. */
	27
	28	#ifndef EXPERIMENTAL_DANE
	29	static void dummy(int x) { dummy(x-1); }
	30	#else
	31
	32	/* Enabling DANE without enabling TLS cannot work. Abort the compilation. */
	33	#ifndef SUPPORT_TLS
	34	#error DANE support requires that TLS support must be enabled. Abort build.
	35	#endif
	36
	37	#ifdef USE_GNUTLS
	38	#include "dane-gnu.c"
	39	#else
	40	#include "dane-openssl.c"
	41	#endif
	42
	43
	44	#endif /* EXPERIMENTAL_DANE */
	45
	46	/* End of dane.c */