|
|
.\" $OpenBSD: ber_set_header.3,v 1.3.2.1 2019/10/27 20:05:12 tb Exp $
|
|
|
.\"
|
|
|
.\" Copyright (c) 2007, 2012 Reyk Floeter <reyk@openbsd.org>
|
|
|
.\"
|
|
|
.\" Permission to use, copy, modify, and distribute this software for any
|
|
|
.\" purpose with or without fee is hereby granted, provided that the above
|
|
|
.\" copyright notice and this permission notice appear in all copies.
|
|
|
.\"
|
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
|
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
|
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
|
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
|
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
|
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
|
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
.\"
|
|
|
.Dd $Mdocdate: October 27 2019 $
|
|
|
.Dt OBER_SET_HEADER 3
|
|
|
.Os
|
|
|
.Sh NAME
|
|
|
.Nm ober_set_header ,
|
|
|
.Nm ober_calc_len ,
|
|
|
.Nm ober_set_writecallback ,
|
|
|
.Nm ober_link_elements ,
|
|
|
.Nm ober_replace_elements ,
|
|
|
.Nm ober_unlink_elements ,
|
|
|
.Nm ober_free_element ,
|
|
|
.Nm ober_free_elements
|
|
|
.Nd change and destroy ASN.1 objects for BER encoding
|
|
|
.Sh SYNOPSIS
|
|
|
.In sys/types.h
|
|
|
.In ber.h
|
|
|
.Ft "void"
|
|
|
.Fn "ober_set_header" "struct ber_element *elm" "int class" "unsigned int type"
|
|
|
.Ft "size_t"
|
|
|
.Fn "ober_calc_len" "struct ber_element *root"
|
|
|
.Ft "void"
|
|
|
.Fo "ober_set_writecallback"
|
|
|
.Fa "struct ber_element *elm"
|
|
|
.Fa "void (*cb)(void *arg, size_t offs)"
|
|
|
.Fa "void *arg"
|
|
|
.Fc
|
|
|
.Ft "void"
|
|
|
.Fn "ober_link_elements" "struct ber_element *prev" "struct ber_element *elm"
|
|
|
.Ft "void"
|
|
|
.Fn "ober_replace_elements" "struct ber_element *prev" "struct ber_element *elm"
|
|
|
.Ft "struct ber_element *"
|
|
|
.Fn "ober_unlink_elements" "struct ber_element *prev"
|
|
|
.Ft "void"
|
|
|
.Fn "ober_free_element" "struct ber_element *root"
|
|
|
.Ft "void"
|
|
|
.Fn "ober_free_elements" "struct ber_element *root"
|
|
|
.Pp
|
|
|
.Fd #define BER_TYPE_BOOLEAN 1
|
|
|
.Fd #define BER_TYPE_INTEGER 2
|
|
|
.Fd #define BER_TYPE_BITSTRING 3
|
|
|
.Fd #define BER_TYPE_OCTETSTRING 4
|
|
|
.Fd #define BER_TYPE_NULL 5
|
|
|
.Fd #define BER_TYPE_OBJECT 6
|
|
|
.Fd #define BER_TYPE_ENUMERATED 10
|
|
|
.Fd #define BER_TYPE_SEQUENCE 16
|
|
|
.Fd #define BER_TYPE_SET 17
|
|
|
.Pp
|
|
|
.Fd #define BER_TYPE_CONSTRUCTED 0x20
|
|
|
.Pp
|
|
|
.Fd #define BER_CLASS_UNIVERSAL 0x0
|
|
|
.Fd #define BER_CLASS_UNIV BER_CLASS_UNIVERSAL
|
|
|
.Fd #define BER_CLASS_APPLICATION 0x1
|
|
|
.Fd #define BER_CLASS_APP BER_CLASS_APPLICATION
|
|
|
.Fd #define BER_CLASS_CONTEXT 0x2
|
|
|
.Fd #define BER_CLASS_PRIVATE 0x3
|
|
|
.Sh DESCRIPTION
|
|
|
.Fn ober_set_header
|
|
|
sets the
|
|
|
.Fa class
|
|
|
and
|
|
|
.Fa type
|
|
|
of
|
|
|
.Fa elm .
|
|
|
.Pp
|
|
|
.Fn ober_calc_len
|
|
|
determines the total length of
|
|
|
.Fa root .
|
|
|
.Pp
|
|
|
.Fn ober_set_writecallback
|
|
|
registers the
|
|
|
.Vt br_cb
|
|
|
callback function.
|
|
|
.Pp
|
|
|
.Fn ober_link_elements
|
|
|
links
|
|
|
.Fa prev
|
|
|
and
|
|
|
.Fa elm .
|
|
|
.Pp
|
|
|
.Fn ober_replace_elements
|
|
|
replaces
|
|
|
.Fa prev
|
|
|
with
|
|
|
.Fa new
|
|
|
and frees any dynamically allocated storage assocated with
|
|
|
.Fa prev .
|
|
|
.Pp
|
|
|
.Fn ober_unlink_elements
|
|
|
unlinks
|
|
|
.Fa prev .
|
|
|
.Pp
|
|
|
.Fn ober_free_element
|
|
|
and
|
|
|
.Fn ober_free_elements
|
|
|
free any dynamically allocated storage associated with
|
|
|
.Fa root .
|
|
|
.Sh RETURN VALUES
|
|
|
.Fn ober_calc_len
|
|
|
returns the total length of a fully populated
|
|
|
.Fa root
|
|
|
containing one or more
|
|
|
.Vt ber_element .
|
|
|
.Pp
|
|
|
.Fn ober_unlink_elements
|
|
|
returns a pointer to
|
|
|
.Vt ber_element .
|
|
|
.Sh SEE ALSO
|
|
|
.Xr ober_add_string 3 ,
|
|
|
.Xr ober_get_string 3 ,
|
|
|
.Xr ober_oid_cmp 3 ,
|
|
|
.Xr ober_read_elements 3
|
|
|
.Sh STANDARDS
|
|
|
ITU-T Recommendation X.690, also known as ISO/IEC 8825-1:
|
|
|
Information technology - ASN.1 encoding rules.
|
|
|
.Sh HISTORY
|
|
|
These functions first appeared as internal functions in
|
|
|
.Xr snmpd 8
|
|
|
in
|
|
|
.Ox 4.2
|
|
|
and were moved to libutil in
|
|
|
.Ox 6.6 .
|
|
|
.Sh AUTHORS
|
|
|
.An -nosplit
|
|
|
The BER library was written by
|
|
|
.An Claudio Jeker Aq Mt claudio@openbsd.org ,
|
|
|
.An Marc Balmer Aq Mt marc@openbsd.org
|
|
|
and
|
|
|
.An Reyk Floeter Aq Mt reyk@openbsd.org .
|