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mpd 5.9

/*
 * util.h
 *
 * Written by Archie Cobbs <archie@freebsd.org>
 * Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
 * See ``COPYRIGHT.whistle''
 */

#ifndef _UTIL_H_
#define _UTIL_H_

#include "ip.h"
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <stdio.h>
#include <osreldate.h>
 /*-
  * The following macro is used to update an
  * internet checksum.  "acc" is a 32-bit
  * accumulation of all the changes to the
  * checksum (adding in old 16-bit words and
  * subtracting out new words), and "cksum"
  * is the checksum value to be updated.
  */
#define ADJUST_CHECKSUM(acc, cksum) { \
    acc += cksum; \
    if (acc < 0) { \
      acc = -acc; \
      acc = (acc >> 16) + (acc & 0xffff); \
      acc += acc >> 16; \
      cksum = (u_short) ~acc; \
    } else { \
      acc = (acc >> 16) + (acc & 0xffff); \
      acc += acc >> 16; \
      cksum = (u_short) acc; \
    } \
  }

#define MAX_U_INT32		0xffffffffU

#define IFCONF_BUFFSIZE		16384
#define IFCONF_BUFFMAXSIZE	1048576

struct configfile {
	char   *label;
	off_t	seek;
	int	linenum;
	struct configfile *next;
};

struct configfiles {
	char   *filename;
	struct configfile *sections;
	struct configfiles *next;
};

/*
 * FUNCTIONS
 */

extern FILE *OpenConfFile(const char *name, struct configfile **cf);
extern int SeekToLabel(FILE *fp, const char *label, int *lineNum, struct configfile *cf);
extern char *ReadFullLine(FILE *fp, int *lineNum, char *result, int resultlen);
extern int ReadFile(const char *filename, const char *target, int (*func) (Context ctx, int ac, const char *const av[], const char *file, int line), Context ctx);
extern int ParseLine(char *line, char *vec[], int max_args, int copy);
extern void FreeArgs(int ac, char *av[]);

extern int TcpGetListenPort(struct u_addr *addr, in_port_t port, int block);
extern int TcpAcceptConnection(int sock, struct sockaddr_storage *addr, int block);
extern int GetInetSocket(int type, struct u_addr *addr, in_port_t port, int block, char *ebuf, size_t len);

#ifdef PHYSTYPE_MODEM
extern int OpenSerialDevice(const char *label, const char *path, int baudrate);
extern int ExclusiveOpenDevice(const char *label, const char *path);
extern void ExclusiveCloseDevice(const char *label, int fd, const char *path);

#endif

extern int PIDCheck(const char *lockfile, int killem);

extern void LengthenArray(void *arrayp, size_t esize, int *alenp, const char *type);

extern int ExecCmd(int log, const char *label, const char *fmt,...)__printflike(3, 4);
extern int ExecCmdNosh(int log, const char *label, const char *fmt,...)__printflike(3, 4);

extern void ShowMesg(int log, const char *pref, const char *buf, int len);
extern char *Bin2Hex(const unsigned char *bin, size_t len);
extern u_char *Hex2Bin(char *hexstr);

#ifndef USE_NG_PRED1
extern u_short Crc16(u_short fcs, u_char *cp, int len);

#endif

extern u_long GenerateMagic(void);

extern int GetAnyIpAddress(struct u_addr *ipaddr, const char *ifname);
extern int GetEther(struct u_addr *addr, struct sockaddr_dl *hwaddr);
extern int GetPeerEther(struct u_addr *addr, struct sockaddr_dl *hwaddr);
extern void ppp_util_ascify(char *buf, size_t max, const char *bytes, size_t len);
extern int IfaceSetFlag(const char *ifname, int value);

#ifndef	HAVE_NTOA_R
extern char *ether_ntoa_r(const struct ether_addr *n, char *a);

#endif


#endif