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freebsd-dev/eBones/include/krb.h
Justin T. Gibbs f4390542d7 Kerberos can now deal with multi-homed clients. 
Kerberos obtains a network address for the local host from the routing
tables and uses it consistently for all Kerberos transactions.  This ensures
that packets only leave the *authenticated* interface.  Clients who open
and use their own sockets for encrypted or authenticated correspondance
to kerberos services should bind their sockets to the same address as that
used by kerberos.  krb_get_local_addr() and krb_bind_local_addr() allow
clients to obtain the local address or bind a socket to the local address
used by Kerberos respectively.

Reviewed by: Mark Murray <markm>, Garrett Wollman <wollman>
Obtained from: concept by Dieter Dworkin Muller <dworkin@village.org>
1995-10-05 21:30:21 +00:00

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/*
* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, please see the file
* <Copyright.MIT>.
*
* Include file for the Kerberos library.
*
* from: krb.h,v 4.26 89/08/08 17:55:25 jtkohl Exp $
* $Id: krb.h,v 1.6 1995/09/13 17:23:47 markm Exp $
*/
/* Only one time, please */
#ifndef KRB_DEFS
#define KRB_DEFS
/* Need some defs from des.h */
#include <stdio.h>
#include <kerberosIV/des.h>
#include <netinet/in.h>
/* Text describing error codes */
#define MAX_KRB_ERRORS 256
extern char *krb_err_txt[MAX_KRB_ERRORS];
/* 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 "/etc/kerberosIV/kerberos.log"
are these used anyplace '?';
#define VX_KRB_HSTFILE "/etc/krbhst"
#define PC_KRB_HSTFILE "\\kerberos\\krbhst"
#endif
#define KRB_CONF "/etc/kerberosIV/krb.conf"
#define KRB_RLM_TRANS "/etc/kerberosIV/krb.realms"
#define KRB_MASTER "kerberos"
#define KRB_HOST KRB_MASTER
#define KRB_REALM "ATHENA.MIT.EDU"
/* 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/kerberosIV/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 codes returned by get_local_addr and bind_local_addr */
#define GT_LADDR_NOSOCK 82 /* Can't open socket */
#define GT_LADDR_IFLIST 83 /*
* Can't retrieve local interface
* configuration list
*/
#define GT_LADDR_NVI 84 /* No valid local interface found */
#define BND_LADDR_BIND 85 /* Can't bind local address */
/* 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); \
bcopy((char *)_krb_swap_tmp,(char *)x,16);\
}
#define swap_u_12(x) {\
unsigned long _krb_swap_tmp[4];\
swab(( char *) x, ((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); \
bcopy((char *)_krb_swap_tmp,(char *)x,12);\
}
#define swap_C_Block(x) {\
unsigned long _krb_swap_tmp[4];\
swab(( char *) x, ((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) ,2); \
bcopy((char *)_krb_swap_tmp,(char *)x,8);\
}
#define swap_u_quad(x) {\
unsigned long _krb_swap_tmp[4];\
swab(( char *) &x, ((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) ,2); \
bcopy((char *)_krb_swap_tmp,(char *)&x,8);\
}
#define swap_u_long(x) {\
unsigned long _krb_swap_tmp[4];\
swab((char *) &x, ((char *) _krb_swap_tmp) +2 ,2); \
swab(((char *) &x) +2,((char *) _krb_swap_tmp),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
#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
#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
/* libacl */
void acl_canonicalize_principal __P((char *principal, char *buf));
int acl_check __P((char *acl, char *principal));
int acl_exact_match __P((char *acl, char *principal));
int acl_add __P((char *acl, char *principal));
int acl_delete __P((char *acl, char *principal));
int acl_initialize __P((char *acl_file, int mode));
/* libkrb - krb.3 */
int krb_mk_req __P((KTEXT authent, char *service, char *instance, char *realm,
long checksum);
int krb_rd_req __P((KTEXT authent, char *service, char *instance,
long from_addr, AUTH_DAT *ad, char *fn));
int krb_kntoln __P((AUTH_DAT *ad, char *lname));
int krb_set_key __P((char *key, int cvt));
int krb_get_cred __P((char *service, char *instance, char *realm,
CREDENTIALS *c));
long krb_mk_priv __P((u_char *in, u_char *out, u_long in_length,
des_key_schedule schedule, des_cblock key, struct sockaddr_in *sender,
struct sockaddr_in *receiver));
long krb_rd_priv __P((u_char *in, u_long in_length, Key_schedule schedule,
des_cblock key, struct sockaddr_in *sender, struct sockaddr_in *receiver,
MSG_DAT *msg_data));
long krb_mk_safe __P((u_char *in, u_char *out, u_long in_length,
des_cblock *key, struct sockaddr_in *sender, struct sockaddr_in *receiver));
long krb_rd_safe __P((u_char *in, u_long length, des_cblock *key,
struct sockaddr_in *sender, struct sockaddr_in *receiver,
MSG_DAT *msg_data));
long krb_mk_err __P((u_char *out, long code, char *string));
int krb_rd_err __P((u_char *in, u_long in_length, long *code, MSG_DAT *m_data));
/* libkrb - krb_sendauth.3 */
int krb_sendauth __P((long options, int fd, KTEXT ticket, char *service,
char *inst, char *realm, u_long checksum, MSG_DAT *msg_data,
CREDENTIALS *cred, Key_schedule schedule, struct sockaddr_in *laddr,
struct sockaddr_in *faddr, char *version));
int krb_recvauth __P((long options, int fd, KTEXT ticket, char *service,
char *instance, struct sockaddr_in *faddr, struct sockaddr_in *laddr,
AUTH_DAT *kdata, char *filename, Key_schedule schedule, char *version));
int krb_net_write __P((int fd, char *buf, int len));
int krb_net_read __P((int fd, char *buf, int len));
/* libkrb - krb_realmofhost.3 */
char *krb_realmofhost __P((char *host));
char *krb_get_phost __P((char *alias));
int krb_get_krbhst __P((char *h, char *r, int n));
int krb_get_admhst __P((char *h, char *r, int n));
int krb_get_lrealm __P((char *r, int n));
/* libkrb - krb_set_tkt_string.3 */
void krb_set_tkt_string(char *val);
/* libkrb - kuserok.3 */
int kuserok __P((AUTH_DAT *authdata, char *localuser));
/* libkrb - tf_util.3 */
int tf_init __P((char *tf_name, int rw));
int tf_get_pname __P((char *p));
int tf_get_pinst __P((char *inst));
int tf_get_cred __P((CREDENTIALS *c));
void tf_close __P((void));
/* Internal routines */
int des_read __P((int fd, char *buf, int len));
int des_write __P((int fd, char *buf, int len));
int krb_get_tf_realm __P((char *ticket_file, char *realm));
int krb_get_in_tkt __P((char *user, char *instance, char *realm, char *service,
char *sinstance, int life, int (*key_proc)(), int (*decrypt_proc)(),
char *arg));
int krb_get_pw_in_tkt __P((char *user, char *instance, char *realm,
char *service, char *sinstance, int life, char *password));
int krb_get_svc_in_tkt __P((char *user, char *instance, char *realm,
char *service, char *sinstance, int life, char *srvtab));
int krb_get_tf_fullname __P((char *ticket_file, char *name, char *instance,
char *realm));
int save_credentials __P((char *service, char *instance, char *realm,
des_cblock session, int lifetime, int kvno, KTEXT ticket, long issue_date));
int read_service_key __P((char *service, char *instance, char *realm, int kvno,
char *file, char *key));
int get_ad_tkt __P((char *service, char *sinstance, char *realm, int lifetime));
int send_to_kdc __P((KTEXT pkt, KTEXT rpkt, char *realm));
int krb_bind_local_addr __P((int s));
int krb_get_local_addr __P((struct sockaddr_in *returned_addr));
int krb_create_ticket __P((KTEXT tkt, unsigned char flags, char *pname,
char *pinstance, char *prealm, long paddress, char *session, short life,
long time_sec, char *sname, char *sinstance, C_Block key));
int decomp_ticket __P((KTEXT tkt, unsigned char *flags, char *pname,
char *pinstance, char *prealm, unsigned long *paddress, des_cblock session,
int *life, unsigned long *time_sec, char *sname, char *sinstance,
des_cblock key, des_key_schedule key_s));
int create_ciph __P((KTEXT c, C_Block session, char *service, char *instance,
char *realm, unsigned long life, int kvno, KTEXT tkt,
unsigned long kdc_time, C_Block key));
int kname_parse __P((char *np, char *ip, char *rp, char *fullname));
int tf_save_cred __P((char *service, char *instance, char *realm,
des_cblock session, int lifetime, int kvno, KTEXT ticket, long issue_date));
int getst(int fd, char *s, int n));
int pkt_clen __P((KTEXT pkt));
int in_tkt __P((char *pname, char *pinst));
int dest_tkt __P((void));
char *month_sname __P((int n));
void log __P(()); /* Actually VARARGS - markm */
void kset_logfile __P((char *filename));
void set_logfile __P((char *filename));
int k_isinst __P((char *s));
int k_isrealm __P((char *s));
int k_isname __P((char *s));
int k_gethostname __P((char *name, int namelen));
int kerb_init __P((void));
void kerb_fini __P((void));
int kerb_db_set_name __P((char *name));
int kerb_db_set_lockmode __P((int mode));
int kerb_db_create __P((char *db_name));
int kerb_db_iterate __P((int (*func)(), char *arg));
int kerb_db_rename __P((char *from, char *to));
long kerb_get_db_age __P((void));
char * stime __P((long *t));
long kdb_get_master_key __P((int prompt, C_Block master_key,
Key_schedule master_key_sched));
long kdb_verify_master_key __P((C_Block master_key,
Key_schedule master_key_sched, FILE *out));
void kdb_encrypt_key __P((C_Block in, C_Block out, C_Block master_key,
Key_schedule master_key_sched, int e_d_flag));
extern int krb_ap_req_debug;
extern int krb_debug;
#endif KRB_DEFS
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