ppp/pppd/md4.h
Eivind Næss 2883dd0710 Use autoconf/automake to configure and make ppp
This change brings in autoconf/automake scripts to configure the ppp project. Current change doesn't eliminate the previous build system, but the new script autogen.sh will overwrite configure, and generate the basic Makefile.in and Makefile files.

Features can now be enabled by command line:

  * Microsoft Extensions,
    - MSCHAP
    - MPPE
    - MS LAN Manager support
  * IPXCP protocol
  * CBCP protocol
  * PAM support
  * EAP-TLS support
  * EAP-SRP support
  * Max session lifetime by byte count
  * Plugins
  * Packet activity filter support
  * Multilink
  * IPv6 support

Control linkage with
  * OpenSSL (-lssl -lcrypto)
  * systemd (-lsystemd)
  * libatm (-latm)
  * libsrp (-lsrp)
  * pam (-lpam)

Also, the configure script is made sensitive to features of OpenSSL. Like the presence or absence of DES, SHA, MD4 and MD5 crypto support. In the cases where either of these are missing, the support will be directly compiled into pppd and plugins.

In addition, package maintainers can now control the installation paths with standard --prefix=, or --localstatedir=, or --sysconfdir= to configure. On top of that, they can now control the following directories:
  * runtime directory w/--with-runtime-dir
  * logfile directory w/--with-logfile-dir
  * plugin directory w/--with-plugin-dir

In the case where automake isn't the right solution, namely: SunOS kernel module build, the original Makefile infrastructure is preserved and reused.

Care was taken to only cosmetically touchup the source files in this change. This means:
  * Insert HAVE_CONFIG_H and include config.h in all .c files.
  * Change HAS_SHADOW to HAVE_SHADOW_H
  * Change HAVE_LOGWTMP to HAVE_UTMP_H
  * Introduce HAVE_CRYPT_H into the source code where appropriate
  * Added ifdef MPPE where appropriate
  * USE_SRP required a few changes as it didn't compile
  * Touchup some compile warning in pppstats directory on SunOS

Introduced a new pppdconf.h file that exports the appropriate defines to a module that wants to provide a module that pppd can dynamically load. This will define/undef features like MPPE, CHAPMS such that the project doesn't have to guess what features pppd is compiled with.

Signed-off-by: Eivind Næss <eivnaes@yahoo.com>
2021-07-20 08:24:08 -07:00

68 lines
2.2 KiB
C

/*
** ********************************************************************
** md4.h -- Header file for implementation of **
** MD4 Message Digest Algorithm **
** Updated: 2/13/90 by Ronald L. Rivest **
** (C) 1990 RSA Data Security, Inc. **
** ********************************************************************
*/
#include "pppdconf.h"
#ifndef __MD4_INCLUDE__
#define __MD4_INCLUDE__
#ifndef USE_MD4
#include <openssl/md4.h>
#define MD4Init MD4_Init
#define MD4Update MD4_Update
#define MD4Final MD4_Final
#else
/* MDstruct is the data structure for a message digest computation.
*/
typedef struct {
unsigned int buffer[4]; /* Holds 4-word result of MD computation */
unsigned char count[8]; /* Number of bits processed so far */
unsigned int done; /* Nonzero means MD computation finished */
} MD4_CTX;
/* MD4Init(MD4_CTX *)
** Initialize the MD4_CTX prepatory to doing a message digest
** computation.
*/
extern void MD4Init(MD4_CTX *MD);
/* MD4Update(MD,X,count)
** Input: X -- a pointer to an array of unsigned characters.
** count -- the number of bits of X to use (an unsigned int).
** Updates MD using the first "count" bits of X.
** The array pointed to by X is not modified.
** If count is not a multiple of 8, MD4Update uses high bits of
** last byte.
** This is the basic input routine for a user.
** The routine terminates the MD computation when count < 512, so
** every MD computation should end with one call to MD4Update with a
** count less than 512. Zero is OK for a count.
*/
extern void MD4Update(MD4_CTX *MD, unsigned char *X, unsigned int count);
/* MD4Print(MD)
** Prints message digest buffer MD as 32 hexadecimal digits.
** Order is from low-order byte of buffer[0] to high-order byte
** of buffer[3].
** Each byte is printed with high-order hexadecimal digit first.
*/
extern void MD4Print(MD4_CTX *);
/* MD4Final(buf, MD)
** Returns message digest from MD and terminates the message
** digest computation.
*/
extern void MD4Final(unsigned char *, MD4_CTX *);
/*
** End of md4.h
****************************(cut)***********************************/
#endif /* USE_MD4 */
#endif /* __MD4_INCLUDE__ */