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getesdfent(3)
NAME
getesdfent, getesdfnam, setprdfent, endprdfent, putesdfnam, getprdfent,
getprdfnam, putprdfnam, copyesdfent - Manipulate system default database
entry (Enhanced Security)
SYNOPSIS
#include <sys/types.h>
#include <sys/security.h>
#include <prot.h>
struct es_default *getesdfent(
void );
struct es_default *getesdfnam(
char *name );
void setprdfent(
void );
void endprdfent(
void );
int putesdfnam(
char *name,
struct es_default *pr );
struct es_default *copyesdfent(
struct es_default *pr );
Note
The getprdfent(), getprdfnam(), and putprdfnam() routines have been
replaced by getesdfent(), getesdfnam(), and putesdfnam() respectively.
LIBRARY
Security Library (libsecurity.so)
NOTE: In order to quickstart a program, the program must be linked as
follows:
-lsecurity -ldb -laud -lm
See the shared library discussion in the Programmer's Guide for more
information about using the quickstarting feature.
PARAMETERS
name
Specifies a system default database entry name.
pr Specifies a system default database control entry structure.
DESCRIPTION
The getesdfent(), getesdfnam(), and copyesdfent() functions each return a
pointer to an object with the following structure containing the
separated-out fields of a line in the system default database. Each line in
the database contains a es_default structure, declared in the <prot.h> file
as follows:
struct es_default {
AUTH_ESCAP_COMMON
char *dd_name; /* copy of sfld->fd_name */
int dg_name; /* copy of sflg->fg_name */
size_t esprof_flen;
struct espw_field *prd;
struct espw_flag *prg;
size_t estc_flen;
struct estc_field *tcd;
struct estc_flag *tcg;
size_t esdev_flen;
struct esdev_field *devd;
struct esdev_flag *devg;
size_t fieldlen;
struct es_default_fields *sfld;
struct es_default_flags *sflg;
} ;
struct system_default_fields
{
time_t fd_inactivity_timeout;
time_t fd_pw_expire_warning;
char fd_pw_site_callout[MAXPATHLEN];
mask_t fd_secclass[AUTH_SECCLASSVEC_SIZE];
/* System security class */
char fd_boot_authenticate;
char fd_audit_enable;
} ;
struct system_default_flags
{
unsigned int
fg_inactivity_timeout : 1,
fg_pw_expire_warning : 1,
fg_pw_site_callout : 1,
fg_boot_authenticate : 1,
fg_audit_enable : 1,
fg_secclass : 1 ;
} ;
struct es_default_fields
{
char *fd_name;
time_t fd_inactivity_timeout;
time_t fd_pw_expire_warning;
char *fd_pw_site_callout;
mand_ir_t *fd_single_user_sl;
mask_t *fd_secclass; /* System security class */
char fd_boot_authenticate;
char fd_audit_enable;
char fd_preexpire; /* admin-set psw should be expired */
char fd_skip_ttys_update; /* skip putprtcnam in login path */
char fd_auto_migrate_u; /* auto-create 'missing' profiles */
time_t fd_max_vac_future; /* how far into future can vac. be? */
time_t fd_max_vac_len; /* how long can vac. be (by user)? */
/* if either of the above fields is 0, user-originated 'vacation'
* scheduling is disabled. */
char fd_accept_vouch; /* accept 'vouching' in SIA */
} ;
struct es_default_flags
{
unsigned int
fg_name : 1,
fg_inactivity_timeout : 1,
fg_pw_expire_warning : 1,
fg_pw_site_callout : 1,
fg_single_user_sl : 1, /* sens. level for single-user*/
fg_boot_authenticate : 1,
fg_audit_enable : 1,
fg_secclass : 1,
fg_preexpire : 1, /* Is fd_preexpire set? */
fg_skip_ttys_update : 1, /* Have fd_skip_ttys_update? */
fg_auto_migrate_u : 1, /* Have fd_auto_migrate_u? */
fg_max_vac_future : 1, /* Have fd_max_vac_future? */
fg_max_vac_len : 1, /* Have fd_max_vac_len? */
fg_accept_vouch : 1 /* Have fd_accept_vouch? */
;
} ;
Currently there is only one entry in the system default database,
referenced by the name "default".
The system default database contains default values for all parameters in
the protected password, terminal control, and device assignment databases,
as well as configurable system-wide parameters. The fields from the other
databases are described in the corresponding reference pages.
fd_pw_expire_warning
This field is the time, in seconds, before a password's expiration that
the system begins printing expiration warnings when the user logs in.
fd_secclass
Although not used in the software, this field is an indicator of the
system's TCSEC (Orange Book) class of trust.
fd_boot_authenticate
This field is a Boolean flag that indicates whether an authorized user
must authenticate before the system begins operation. This field is
reserved for future use.
fd_audit_enable
This field and the fd_audit_flag are always 0 (zero).
fd_name
Name of the entry.
fd_inactivity_timeout
Reserved for future use.
fd_pw_site_callout
Pathname for the password policy callout script (or program, if
replaced by the site). It is currently shipped as "/tcb/bin/pwpolicy".
fd_preexpire
Flag determining whether passwords set by system administrators should
be pre-expired. Honored by the dxchpwd program (and thus by
dxaccounts), as well as by the auto-migration code in the login
sequence (see fd_auto_migrate_u).
fd_skip_ttys_update
Flag which, if set, disables break-in evasion for terminals by skipping
the update of the ttys database during logins.
fd_auto_migrate_u
Flag determining whether user accounts which have valid accounts
according to getpwnam() but which have no entry visible to getespwnam()
should have an extended profile created automatically during login
processing.
fd_max_vac_future
Time interval (in seconds) specifying the maximum time from the current
time at which a user-initiated vacation can start. (Administratively-
set vacations are not subject to this limit.) If 0, no user-initiated
vacationing is possible.
fd_max_vac_len
Maximum time interval (in seconds) which can be set as the duration of
a user-initiated vacation request. (Administratively-set vacations are
not subject to this limit.) If 0, no user-initiated vacationing is
possible.
fd_accept_vouch
Flag determining whether the enhanced security login sequence accepts
password validation from another SIA mechanism, such as DCE.
The getesdfent() function returns a pointer to the first es_default
structure in the database when first called. Thereafter, it returns a
pointer to the next es_default structure in the database, so successive
calls can be used to search the database (not currently supported). The
getesdfnam() function searches from the beginning of the file until a
default entry matching name is found, and returns a pointer to the
particular structure in which it was found. If an end-of-file or an error
is encountered on reading, these functions return a null pointer.
Currently, all programs access the default database by calling getesdfnam()
(the default).
The copyesdfent() function copies pr, and the fields to which it refers, to
a newly allocated data area. Because the getesdfent() and putesdfent()
functions reuse a static structure when accessing the database, the values
of any entry must be saved if the database routines are used again. The
es_default structure returned by copyesdfent() can be freed using the
free() function.
A call to the setprdfent() function has the effect of rewinding the default
control file to allow repeated searches. The endprdfent() function can be
called to close the database when processing is complete.
The putesdfnam() function puts a new or replaced default control entry pr
with key name into the database. If the sflg->fg_name field contains a
value of 0 (zero), the requested entry is deleted from the system default
database. The putesdfnam() function locks the database for all update
operations, and performs an endprdfent() after the update or failed
attempt.
CAUTIONS
Structures returned by the database routines contain pointers to character
strings and lists rather than being self-contained. The copyesdfent()
function must be used rather than doing a structure assignment to save a
returned structure.
The value returned by the getesdfent() and getesdfnam() functions refers to
a structure that is overwritten by calls to the function. To retrieve an
entry, modify it, and replace it in the database, you must copy the entry
using the copyesdfent() function and supply the modified buffer to the
putesdfent() function.
RETURN VALUES
The () and getesdfnam() functions return null pointers on EOF or an error.
The putesdfnam() function returns a value of 0 (zero) if it cannot add or
update the entry.
The copyesdfent() function returns a pointer, or NULL on (allocation)
error.
FILES
/etc/auth/system/default
System defaults database.
SEE ALSO
Functions: getespwent(3), getestcent(3), getesdvent(3)
Files: authcap(4), default(4)
Security
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