/*
 * $Source: /cvs/src/sasl/mac/kerberos_includes/old_krb.h,v $
 * $Author: rjs3 $
 * $Header: /cvs/src/sasl/mac/kerberos_includes/old_krb.h,v 1.2 2001/12/04 02:06:06 rjs3 Exp $
 *
 * Copyright 1987, 1988 by the Massachusetts Institute of Technology.
 *
 * For copying and distribution information, please see the file
 * <mit-copyright.h>.
 *
 * Include file for the Kerberos library.
 */

#ifndef	_KERBEROS_KRB_H
#define	_KERBEROS_KRB_H

/* #pragma ident	"@(#)krb.h	1.12	97/04/14 SMI" */

#include <kerberos/mit-copyright.h>
#include <kerberos/des.h>

#ifdef	__cplusplus
extern "C" {
#endif

/* Text describing error codes */
#define		KRB_ERRORS_TABLE_SIZE	256
#define		MAX_KRB_ERRORS	(KRB_ERRORS_TABLE_SIZE-1)
extern char *krb_err_txt[KRB_ERRORS_TABLE_SIZE];

/* These are not defined for at least SunOS 3.3 and Ultrix 2.2 */
#if defined(ULTRIX022) || (defined(SunOS) && SunOS < 40)
#define	FD_ZERO(p)	((p)->fds_bits[0] = 0)
#define	FD_SET(n, p)	((p)->fds_bits[0] |= (1 << (n)))
#define	FD_ISSET(n, p)	((p)->fds_bits[0] & (1 << (n)))
#endif /* ULTRIX022 || SunOS */

/* General definitions */
#define		KSUCCESS	0
#define		KFAILURE	255

#ifdef NO_UIDGID_T
typedef unsigned short uid_t;
typedef unsigned short gid_t;
#endif /* NO_UIDGID_T */

/*
 * Kerberos specific definitions
 *
 * KRBLOG is the log file for the kerberos master server. KRB_CONF is
 * the configuration file where different host machines running master
 * and slave servers can be found. KRB_MASTER is the name of the
 * machine with the master database.  The admin_server runs on this
 * machine, and all changes to the db (as opposed to read-only
 * requests, which can go to slaves) must go to it. KRB_HOST is the
 * default machine when looking for a kerberos slave server.  Other
 * possibilities are in the KRB_CONF file. KRB_REALM is the name of
 * the realm.
 */

#ifdef notdef
this is server - only, does not belong here;
#define		KRBLOG		"/kerberos/kerberos.log"
are these used anyplace '?';
#define		VX_KRB_HSTFILE	"/etc/krbhst"
#define		PC_KRB_HSTFILE	"\\kerberos\\krbhst"
#endif

#define		KRB_CONF	"/etc/krb.conf"
#define		KRB_RLM_TRANS	"/etc/krb.realms"
#define		KRB_MASTER	"kerberos"
#define		KRB_HOST	KRB_MASTER
/* #define	KRB_REALM	"ATHENA.MIT.EDU" */
#define		KRB_REALM	krb_get_default_realm()
char		*krb_get_default_realm();

#ifdef NIS
/* defines for use with NIS service */
#define		KRB_CONF_MAP	"krb.conf"	    /* conf NIS map name */
#define		KRB_REALM_DEFKEY "DEFAULT_REALM"    /* key for default realm */
#endif /* NIS */

/* The maximum sizes for aname, realm, sname, and instance +1 */
#define		ANAME_SZ	40
#define		REALM_SZ	40
#define		SNAME_SZ	40
#define		INST_SZ		40
/* include space for '.' and '@' */
#define		MAX_K_NAME_SZ	(ANAME_SZ + INST_SZ + REALM_SZ + 2)
#define		KKEY_SZ		100
#define		VERSION_SZ	1
#define		MSG_TYPE_SZ	1
#define		DATE_SZ		26	/* RTI date output */

#define		MAX_HSTNM	100

#ifndef DEFAULT_TKT_LIFE		/* allow compile-time override */
#define	DEFAULT_TKT_LIFE	96	/* default lifetime for krb_mk_req */
					/* & co., 8 hrs */
#endif

/* Definition of text structure used to pass text around */
#define		MAX_KTXT_LEN	1250

struct ktext {
	int	length;				/* Length of the text */
	unsigned char dat[MAX_KTXT_LEN];	/* The data itself */
	unsigned long mbz;			/* zero to catch runaway */
						/* strings */
};

typedef struct ktext *KTEXT;
typedef struct ktext KTEXT_ST;


/* Definitions for send_to_kdc */
#define	CLIENT_KRB_TIMEOUT	4	/* time between retries */
#define	CLIENT_KRB_RETRY	5	/* retry this many times */
#define	CLIENT_KRB_BUFLEN	512	/* max unfragmented packet */

/* Definitions for ticket file utilities */
#define	R_TKT_FIL	0
#define	W_TKT_FIL	1

/* Definitions for cl_get_tgt */
#ifdef PC
#define	CL_GTGT_INIT_FILE		"\\kerberos\\k_in_tkts"
#else
#define	CL_GTGT_INIT_FILE		"/etc/k_in_tkts"
#endif /* PC */

/* Parameters for rd_ap_req */
/* Maximum alloable clock skew in seconds */
#define		CLOCK_SKEW	5*60
/* Filename for readservkey */
#define		KEYFILE		"/etc/srvtab"

/* Structure definition for rd_ap_req */

struct auth_dat {
	unsigned char k_flags;		/* Flags from ticket */
	char	pname[ANAME_SZ];	/* Principal's name */
	char	pinst[INST_SZ];		/* His Instance */
	char	prealm[REALM_SZ];	/* His Realm */
	unsigned long checksum;		/* Data checksum (opt) */
	C_Block	session;		/* Session Key */
	int	life;			/* Life of ticket */
	unsigned long time_sec;		/* Time ticket issued */
	unsigned long address;		/* Address in ticket */
	KTEXT_ST	reply;		/* Auth reply (opt) */
};

typedef struct auth_dat AUTH_DAT;

/* Structure definition for credentials returned by get_cred */

struct credentials {
	char	service[ANAME_SZ];	/* Service name */
	char	instance[INST_SZ];	/* Instance */
	char	realm[REALM_SZ];	/* Auth domain */
	C_Block	session;		/* Session key */
	int	lifetime;		/* Lifetime */
	int	kvno;			/* Key version number */
	KTEXT_ST ticket_st;		/* The ticket itself */
	long	issue_date;		/* The issue time */
	char	pname[ANAME_SZ];	/* Principal's name */
	char	pinst[INST_SZ];		/* Principal's instance */
};

typedef struct credentials CREDENTIALS;

/* Structure definition for rd_private_msg and rd_safe_msg */

struct msg_dat {
	unsigned char *app_data;	/* pointer to appl data */
	unsigned long app_length;	/* length of appl data */
	unsigned long hash;		/* hash to lookup replay */
	int	swap;			/* swap bytes? */
	long	time_sec;		/* msg timestamp seconds */
	unsigned char time_5ms;		/* msg timestamp 5ms units */
};

typedef struct msg_dat MSG_DAT;


/* Location of ticket file for save_cred and get_cred */
#ifdef PC
#define	TKT_FILE	"\\kerberos\\ticket.ses"
#else
#define	TKT_FILE	tkt_string()
#define	TKT_ROOT	"/tmp/tkt"
#endif /* PC */

/* Error codes returned from the KDC */
#define		KDC_OK		0	/* Request OK */
#define		KDC_NAME_EXP	1	/* Principal expired */
#define		KDC_SERVICE_EXP	2	/* Service expired */
#define		KDC_AUTH_EXP	3	/* Auth expired */
#define		KDC_PKT_VER	4	/* Protocol version unknown */
#define		KDC_P_MKEY_VER	5	/* Wrong master key version */
#define		KDC_S_MKEY_VER	6	/* Wrong master key version */
#define		KDC_BYTE_ORDER	7	/* Byte order unknown */
#define		KDC_PR_UNKNOWN	8	/* Principal unknown */
#define		KDC_PR_N_UNIQUE	9	/* Principal not unique */
#define		KDC_NULL_KEY	10	/* Principal has null key */
#define		KDC_GEN_ERR	20	/* Generic error from KDC */


/* Values returned by get_credentials */
#define		GC_OK		0	/* Retrieve OK */
#define		RET_OK		0	/* Retrieve OK */
#define		GC_TKFIL	21	/* Can't read ticket file */
#define		RET_TKFIL	21	/* Can't read ticket file */
#define		GC_NOTKT	22	/* Can't find ticket or TGT */
#define		RET_NOTKT	22	/* Can't find ticket or TGT */


/* Values returned by mk_ap_req	 */
#define		MK_AP_OK	0	/* Success */
#define		MK_AP_TGTEXP	26	/* TGT Expired */

/* Values returned by rd_ap_req */
#define		RD_AP_OK	0	/* Request authentic */
#define		RD_AP_UNDEC	31	/* Can't decode authenticator */
#define		RD_AP_EXP	32	/* Ticket expired */
#define		RD_AP_NYV	33	/* Ticket not yet valid */
#define		RD_AP_REPEAT	34	/* Repeated request */
#define		RD_AP_NOT_US	35	/* The ticket isn't for us */
#define		RD_AP_INCON	36	/* Request is inconsistent */
#define		RD_AP_TIME	37	/* delta_t too big */
#define		RD_AP_BADD	38	/* Incorrect net address */
#define		RD_AP_VERSION	39	/* protocol version mismatch */
#define		RD_AP_MSG_TYPE	40	/* invalid msg type */
#define		RD_AP_MODIFIED	41	/* message stream modified */
#define		RD_AP_ORDER	42	/* message out of order */
#define		RD_AP_UNAUTHOR	43	/* unauthorized request */

/* Values returned by get_pw_tkt */
#define		GT_PW_OK	0	/* Got password changing tkt */
#define		GT_PW_NULL	51	/* Current PW is null */
#define		GT_PW_BADPW	52	/* Incorrect current password */
#define		GT_PW_PROT	53	/* Protocol Error */
#define		GT_PW_KDCERR	54	/* Error returned by KDC */
#define		GT_PW_NULLTKT	55	/* Null tkt returned by KDC */


/* Values returned by send_to_kdc */
#define		SKDC_OK		0	/* Response received */
#define		SKDC_RETRY	56	/* Retry count exceeded */
#define		SKDC_CANT	57	/* Can't send request */

/*
 * Values returned by get_intkt
 * (can also return SKDC_* and KDC errors)
 */

#define		INTK_OK		0	/* Ticket obtained */
#define		INTK_W_NOTALL	61	/* Not ALL tickets returned */
#define		INTK_BADPW	62	/* Incorrect password */
#define		INTK_PROT	63	/* Protocol Error */
#define		INTK_ERR	70	/* Other error */

/* Values returned by get_adtkt */
#define		AD_OK		0	/* Ticket Obtained */
#define		AD_NOTGT	71	/* Don't have tgt */

/* Error codes returned by ticket file utilities */
#define		NO_TKT_FIL	76	/* No ticket file found */
#define		TKT_FIL_ACC	77	/* Couldn't access tkt file */
#define		TKT_FIL_LCK	78	/* Couldn't lock ticket file */
#define		TKT_FIL_FMT	79	/* Bad ticket file format */
#define		TKT_FIL_INI	80	/* tf_init not called first */

/* Error code returned by kparse_name */
#define		KNAME_FMT	81	/* Bad Kerberos name format */

/* Error code returned by krb_mk_safe */
#define		SAFE_PRIV_ERROR	-1	/* syscall error */

/*
 * macros for byte swapping; also scratch space
 * u_quad  0-->7, 1-->6, 2-->5, 3-->4, 4-->3, 5-->2, 6-->1, 7-->0
 * u_long  0-->3, 1-->2, 2-->1, 3-->0
 * u_short 0-->1, 1-->0
 */

#define	    swap_u_16(x) {\
	unsigned long   _krb_swap_tmp[4]; \
	swab(((char *)x) +0,  ((char *)_krb_swap_tmp) +14, 2); \
	swab(((char *)x) +2,  ((char *)_krb_swap_tmp) +12, 2); \
	swab(((char *)x) +4,  ((char *)_krb_swap_tmp) +10, 2); \
	swab(((char *)x) +6,  ((char *)_krb_swap_tmp) +8, 2); \
	swab(((char *)x) +8,  ((char *)_krb_swap_tmp) +6, 2); \
	swab(((char *)x) +10, ((char *)_krb_swap_tmp) +4, 2); \
	swab(((char *)x) +12, ((char *)_krb_swap_tmp) +2, 2); \
	swab(((char *)x) +14, ((char *)_krb_swap_tmp) +0, 2); \
	memcpy((char *)x, (char *)_krb_swap_tmp, 16); \
	}

#define	    swap_u_12(x) {\
	unsigned long   _krb_swap_tmp[4]; \
	swab(((char *)x) +0,   ((char *)_krb_swap_tmp) +10, 2); \
	swab(((char *)x) +2,  ((char *)_krb_swap_tmp) +8, 2); \
	swab(((char *)x) +4,  ((char *)_krb_swap_tmp) +6, 2); \
	swab(((char *)x) +6,  ((char *)_krb_swap_tmp) +4, 2); \
	swab(((char *)x) +8,  ((char *)_krb_swap_tmp) +2, 2); \
	swab(((char *)x) +10, ((char *)_krb_swap_tmp) +0, 2); \
	memcpy((char *)x, (char *)_krb_swap_tmp, 12); \
	}

#define	    swap_C_Block(x) {\
	unsigned long   _krb_swap_tmp[4]; \
	swab(((char *)x) +0,  ((char *)_krb_swap_tmp) +6, 2); \
	swab(((char *)x) +2,  ((char *)_krb_swap_tmp) +4, 2); \
	swab(((char *)x) +4,  ((char *)_krb_swap_tmp) +2, 2); \
	swab(((char *)x) +6,  ((char *)_krb_swap_tmp) +0, 2); \
	memcpy((char *)x, (char *)_krb_swap_tmp, 8); \
	}

#define	    swap_u_quad(x) {\
	unsigned long   _krb_swap_tmp[4]; \
	swab(((char *)&x) +0,  ((char *)_krb_swap_tmp) +6, 2); \
	swab(((char *)&x) +2,  ((char *)_krb_swap_tmp) +4, 2); \
	swab(((char *)&x) +4,  ((char *)_krb_swap_tmp) +2, 2); \
	swab(((char *)&x) +6,  ((char *)_krb_swap_tmp) +0, 2); \
	memcpy((char *)&x, (char *)_krb_swap_tmp, 8); \
	}

#define	    swap_u_long(x) { \
	unsigned long   _krb_swap_tmp[4]; \
	swab(((char *)&x) +0,  ((char *)_krb_swap_tmp) +2, 2); \
	swab(((char *)&x) +2,  ((char *)_krb_swap_tmp) +0, 2); \
	x = _krb_swap_tmp[0]; \
	}

#define	    swap_u_short(x) {\
	unsigned short	_krb_swap_sh_tmp; \
	swab(((char *)&x),   (&_krb_swap_sh_tmp), 2); \
	x = (unsigned short) _krb_swap_sh_tmp; \
	}

/* Kerberos ticket flag field bit definitions */
#define	K_FLAG_ORDER	0	/* bit 0 --> lsb */
#define	K_FLAG_1		/* reserved */
#define	K_FLAG_2		/* reserved */
#define	K_FLAG_3		/* reserved */
#define	K_FLAG_4		/* reserved */
#define	K_FLAG_5		/* reserved */
#define	K_FLAG_6		/* reserved */
#define	K_FLAG_7		/* reserved, bit 7 --> msb */

#ifndef PC
char *tkt_string();
#endif /* PC */

/*
 * forward declartion otherwise need to include netinet/in.h
 */

struct sockaddr_in;

#ifdef	OLDNAMES
#define	krb_mk_req		mk_ap_req
#define	krb_rd_req		rd_ap_req
#define	krb_kntoln		an_to_ln
#define	krb_set_key		set_serv_key
#define	krb_get_cred		get_credentials
#define	krb_mk_priv		mk_private_msg
#define	krb_rd_priv		rd_private_msg
#define	krb_mk_safe		mk_safe_msg
#define	krb_rd_safe		rd_safe_msg
#define	krb_mk_err		mk_appl_err_msg
#define	krb_rd_err		rd_appl_err_msg
#define	krb_ck_repl		check_replay
#define	krb_get_pw_in_tkt	get_in_tkt
#define	krb_get_svc_in_tkt	get_svc_in_tkt
#define	krb_get_pw_tkt		get_pw_tkt
#define	krb_realmofhost		krb_getrealm
#define	krb_get_phost		get_phost
#define	krb_get_krbhst		get_krbhst
#define	krb_get_lrealm		get_krbrlm
#else
#ifdef __STDC__
extern int krb_mk_req(KTEXT, char *, char *, char *, long);
extern int krb_rd_req(KTEXT, char *, char *, long, AUTH_DAT *, char *);
extern int krb_kntoln(AUTH_DAT *, char *);
extern int krb_set_key(char *, int);
extern int krb_get_cred(char *, char *, char *, CREDENTIALS *);
extern long krb_mk_safe(unsigned char *, unsigned char *, unsigned long,
	C_Block *, struct sockaddr_in *, struct sockaddr_in *);
extern long krb_rd_safe(unsigned char *, unsigned long, C_Block *,
	struct sockaddr_in *, struct sockaddr_in *, MSG_DAT *);
extern long krb_mk_err(unsigned char *, long, char *);
extern int krb_rd_err(unsigned char *, unsigned long, long *, MSG_DAT *);
extern char *krb_realmofhost(char *);
extern char *krb_get_phost(char *);
extern int krb_get_krbhst(char *, char *, int);
extern int krb_get_admhst(char *, char *, int);
extern int krb_get_lrealm(char *realm, int n);
extern int krb_sendauth(long, int, KTEXT, char *, char *, char *, unsigned long,
	MSG_DAT *, CREDENTIALS *, Key_schedule, struct sockaddr_in *,
	struct sockaddr_in *, char *);
extern int krb_recvauth(long, int, KTEXT, char *, char *,
	struct sockaddr_in *, struct sockaddr_in *,
	AUTH_DAT *, char *, Key_schedule, char *);
extern int krb_net_write(int, char *, int);
extern int krb_net_read(int, char *, int);
extern void krb_set_tkt_string(char *);
#else
extern int krb_mk_req();
extern int krb_rd_req();
extern int krb_kntoln();
extern int krb_set_key();
extern int krb_get_cred();
extern long krb_mk_safe();
extern long krb_rd_safe();
extern long krb_mk_err();
extern int krb_rd_err();
extern char *krb_realmofhost();
extern char *krb_get_phost();
extern int krb_get_krbhst();
extern int krb_get_admhst();
extern int krb_get_lrealm();
extern int krb_sendauth();
extern int krb_recvauth();
extern int krb_net_write();
extern int krb_net_read();
extern void krb_set_tkt_string();
#endif /* __STDC__ */
#endif /* OLDNAMES */

/* Defines for krb_sendauth and krb_recvauth */

#define	KOPT_DONT_MK_REQ	0x00000001	/* don't call krb_mk_req */
#define	KOPT_DO_MUTUAL		0x00000002	/* do mutual auth */
#define	KOPT_DONT_CANON		0x00000004	/* don't canonicalize inst */
						/* as a hostname */

#define	KRB_SENDAUTH_VLEN	8		/* length for version strings */

#ifdef ATHENA_COMPAT
#define	KOPT_DO_OLDSTYLE	0x00000008	/* use the old-style protocol */
#endif /* ATHENA_COMPAT */

#ifdef	__cplusplus
}
#endif

#endif	/* _KERBEROS_KRB_H */