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KADM5_PWCHECK(3) NetBSD Library Functions Manual KADM5_PWCHECK(3)
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kadm5_add_passwd_quality_verifier, kadm5_check_password_quality -- Heim-
dal warning and error functions
Kerberos 5 Library (libkadm5srv, -lkadm5srv)
const char *check_library, const char *check_function);
const char *check_library);
const char *
krb5_principal principal, krb5_data *pwd_data);
krb5_principal principal, krb5_data *password, const char *tuning,
char *message, size_t length);
These functions perform the quality check for the heimdal database
There are two versions of the shared object API; the old version (0) is
deprecated, but still supported. The new version (1) supports multiple
password quality checking policies in the same shared object. See below
The password quality checker will run all policies that are configured by
the user. If any policy rejects the password, the password will be
Policy names are of the form `module-name:policy-name' or, if the the
policy name is unique enough, just `policy-name'.
IMPLEMENTING A PASSWORD QUALITY CHECKING SHARED OBJECT
(This refers to the version 1 API only.)
Module shared objects may conveniently be compiled and linked with
libtool(1). An object needs to export a symbol called
`kadm5_password_verifier' of the type struct kadm5_pw_policy_verifier.
Its name and vendor fields should contain the obvious information. name
must match the `module-name' portion of the policy name (the part before
the colon), if the policy name contains a colon, or the policy will not
be run. version should be KADM5_PASSWD_VERSION_V1.
funcs contains an array of struct kadm5_pw_policy_check_func structures
that is terminated with an entry whose name component is NULL. The name
field of the array must match the `policy-name' portion of a policy name
(the part after the colon, or the complete policy name if there is no
colon) specified by the user or the policy will not be run. The func
fields of the array elements are functions that are exported by the mod-
ule to be called to check the password. They get the following argu-
ments: the Kerberos context, principal, password, a tuning parameter,
and a pointer to a message buffer and its length. The tuning parameter
for the quality check function is currently always NULL. If the password
is acceptable, the function returns zero. Otherwise it returns non-zero
and fills in the message buffer with an appropriate explanation.
RUNNING THE CHECKS
kadm5_setup_passwd_quality_check sets up type 0 checks. It sets up all
type 0 checks defined in krb5.conf(5) if called with the last two argu-
kadm5_add_passwd_quality_verifier sets up type 1 checks. It sets up all
type 1 tests defined in krb5.conf(5) if called with a null second argu-
ment. kadm5_check_password_quality runs the checks in the order in which
they are defined in krb5.conf(5) and the order in which they occur in a
module's funcs array until one returns non-zero.
libtool(1), krb5(3), krb5.conf(5)
NetBSD 9.3 February 29, 2004 NetBSD 9.3