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more about name type and access control

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@12149 ec53bebd-3082-4978-b11e-865c3cabbd6b
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Love Hörnquist Åstrand
2003-04-26 08:32:17 +00:00
parent d50c1e51bc
commit bb41dfa474
2 changed files with 152 additions and 12 deletions
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82
lib/gssapi/gss_acquire_cred.3
View File

@@ -425,6 +425,65 @@ name types
.Li GSS_KRB5_NT_STRING_UID_NAME
.El
.Pp
In GSS-API, names have two forms, internal names and contiguous string
names.
.Bl -bullet
.It
.Li Internal name and mechanism name
.Pp
Internal names are implementation specific representation of
a GSS-API name.
.Li Mechanism names
special form of internal names corresponds to one and only one mechanism.
.Pp
In GSS-API an internal name is stored in a
.Dv gss_name_t .
.It
.Li Contiguous string name and exported name
.Pp
Contiguous string names are gssapi names stored in a
.Dv OCTET STRING
that together with a name type identifier (OID) uniquely specifies a
gss-name.
A special form of the contiguous string name is the exported name that
have a OID embedded in the string to make it unique.
Exported name have the nametype
.Dv GSS_C_NT_EXPORT_NAME .
.Pp
In GSS-API an contiguous string name is stored in a
.Dv gss_buffer_t .
.Pp
Exported names also have the property that they are specified by the
mechanism itself and compatible between diffrent GSS-API
implementations.
.El
.Sh ACCESS CONTROL
There are two ways of comparing GSS-API names, either comparing two
internal names with each other or two contiguous string names with
either other.
.Pp
To compare two internal names with each other, import (if needed) the
names with
.Fn gss_import_name
into the GSS-API implementation and the compare the imported name with
.Fn gss_compare_name .
.Pp
Importing names can be slow, so when its possible to store exported
names in the access control list, comparing contiguous string name
might be better.
.Pp
when comparing contiguous string name, first export them into a
.Dv GSS_C_NT_EXPORT_NAME
name with
.Fn gss_export_name
and then compare with
.Xr memcmp 3 .
.Pp
The resulting name from
.Fn gss_display_name
must not be used for acccess control.
.Sh FUNCTIONS
.Pp
.Fn gss_display_name
takes the gss name in
.Fa input_name
@@ -439,10 +498,21 @@ can either be
or a pointer to a
.Li gss_OID
and will in the later case contain the OID type of the name.
The name should only be used for printing.
Access control should be done with the result of
.Fn gss_export_name .
The name must only be used for printing.
If access control is needed, see section
.Sx ACCESS CONTROL .
.Pp
.Fn gss_inquire_context
returns information about the context.
Information is available even after the context have expired.
.Fa mech_type
argument should be considered readonly and must not be released.
.Fa src_name
and
.Fn dest_name
are both mechanims names and must be released with
.Fn gss_release_name
when no longer used.
.Pp
.Nm gss_context_time
will return the amount of time (in seconds) of the context is still
@@ -471,7 +541,7 @@ Kerberos mechanism.
The acceptor receives the delegated token in the last argument to
.Fn gss_accept_sec_context .
.Pp
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
turns on or off the compatibly with older version of Heimdal using
des3 get and verify mic, this is way to programmatically set the
[gssapi]broken_des3_mic and [gssapi]correct_des3_mic flags (see
@@ -480,9 +550,9 @@ COMPATIBILITY section in
If the CPP symbol
.Dv GSS_C_KRB5_COMPAT_DES3_MIC
is present,
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
exists.
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
will be removed in a later version of the GSS-API library.
.Sh SEE ALSO
.Xr krb5 3 ,

82
lib/gssapi/krb5/gss_acquire_cred.3
View File

@@ -425,6 +425,65 @@ name types
.Li GSS_KRB5_NT_STRING_UID_NAME
.El
.Pp
In GSS-API, names have two forms, internal names and contiguous string
names.
.Bl -bullet
.It
.Li Internal name and mechanism name
.Pp
Internal names are implementation specific representation of
a GSS-API name.
.Li Mechanism names
special form of internal names corresponds to one and only one mechanism.
.Pp
In GSS-API an internal name is stored in a
.Dv gss_name_t .
.It
.Li Contiguous string name and exported name
.Pp
Contiguous string names are gssapi names stored in a
.Dv OCTET STRING
that together with a name type identifier (OID) uniquely specifies a
gss-name.
A special form of the contiguous string name is the exported name that
have a OID embedded in the string to make it unique.
Exported name have the nametype
.Dv GSS_C_NT_EXPORT_NAME .
.Pp
In GSS-API an contiguous string name is stored in a
.Dv gss_buffer_t .
.Pp
Exported names also have the property that they are specified by the
mechanism itself and compatible between diffrent GSS-API
implementations.
.El
.Sh ACCESS CONTROL
There are two ways of comparing GSS-API names, either comparing two
internal names with each other or two contiguous string names with
either other.
.Pp
To compare two internal names with each other, import (if needed) the
names with
.Fn gss_import_name
into the GSS-API implementation and the compare the imported name with
.Fn gss_compare_name .
.Pp
Importing names can be slow, so when its possible to store exported
names in the access control list, comparing contiguous string name
might be better.
.Pp
when comparing contiguous string name, first export them into a
.Dv GSS_C_NT_EXPORT_NAME
name with
.Fn gss_export_name
and then compare with
.Xr memcmp 3 .
.Pp
The resulting name from
.Fn gss_display_name
must not be used for acccess control.
.Sh FUNCTIONS
.Pp
.Fn gss_display_name
takes the gss name in
.Fa input_name
@@ -439,10 +498,21 @@ can either be
or a pointer to a
.Li gss_OID
and will in the later case contain the OID type of the name.
The name should only be used for printing.
Access control should be done with the result of
.Fn gss_export_name .
The name must only be used for printing.
If access control is needed, see section
.Sx ACCESS CONTROL .
.Pp
.Fn gss_inquire_context
returns information about the context.
Information is available even after the context have expired.
.Fa mech_type
argument should be considered readonly and must not be released.
.Fa src_name
and
.Fn dest_name
are both mechanims names and must be released with
.Fn gss_release_name
when no longer used.
.Pp
.Nm gss_context_time
will return the amount of time (in seconds) of the context is still
@@ -471,7 +541,7 @@ Kerberos mechanism.
The acceptor receives the delegated token in the last argument to
.Fn gss_accept_sec_context .
.Pp
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
turns on or off the compatibly with older version of Heimdal using
des3 get and verify mic, this is way to programmatically set the
[gssapi]broken_des3_mic and [gssapi]correct_des3_mic flags (see
@@ -480,9 +550,9 @@ COMPATIBILITY section in
If the CPP symbol
.Dv GSS_C_KRB5_COMPAT_DES3_MIC
is present,
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
exists.
.Nm gss_krb5_compat_des3_mic
.Fn gss_krb5_compat_des3_mic
will be removed in a later version of the GSS-API library.
.Sh SEE ALSO
.Xr krb5 3 ,