oysteikt/heimdal
0
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

document krb5_storage and related functions

Browse Source 
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@13569 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2004-03-20 15:40:00 +00:00
parent dedacdb377
commit a95da2aac2
1 changed files with 383 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

383
lib/krb5/krb5_storage.3 Normal file
View File

@@ -0,0 +1,383 @@
.\" Copyright (c) 2003 - 2004 Kungliga Tekniska H<>gskolan
.\" (Royal Institute of Technology, Stockholm, Sweden).
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" 3. Neither the name of the Institute nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id$
.\"
.Dd March 20, 2004
.Dt KRB5_STORAGE 3
.Os HEIMDAL
.Sh NAME
.Nm krb5_storage ,
.Nm krb5_storage_emem ,
.Nm krb5_storage_from_data ,
.Nm krb5_storage_from_fd ,
.Nm krb5_storage_from_mem ,
.Nm krb5_storage_set_flags ,
.Nm krb5_storage_clear_flags ,
.Nm krb5_storage_is_flags ,
.Nm krb5_storage_set_byteorder ,
.Nm krb5_storage_get_byteorder ,
.Nm krb5_storage_set_eof_code ,
.Nm krb5_storage_seek ,
.Nm krb5_storage_read ,
.Nm krb5_storage_write ,
.Nm krb5_storage_free ,
.Nm krb5_storage_to_data ,
.Nm krb5_store_int32 ,
.Nm krb5_ret_int32 ,
.Nm krb5_store_int16 ,
.Nm krb5_ret_int16 ,
.Nm krb5_store_int8 ,
.Nm krb5_ret_int8 ,
.Nm krb5_store_data ,
.Nm krb5_ret_data ,
.Nm krb5_store_string ,
.Nm krb5_ret_string ,
.Nm krb5_store_stringz ,
.Nm krb5_ret_stringz ,
.Nm krb5_store_principal ,
.Nm krb5_ret_principal ,
.Nm krb5_store_keyblock ,
.Nm krb5_ret_keyblock ,
.Nm krb5_store_times ,
.Nm krb5_ret_times ,
.Nm krb5_store_address ,
.Nm krb5_ret_address ,
.Nm krb5_store_addrs ,
.Nm krb5_ret_addrs ,
.Nm krb5_store_authdata ,
.Nm krb5_ret_authdata ,
.Nm krb5_store_creds ,
.Nm krb5_ret_creds
.Nd operates on the Kerberos datatype krb5_storage
.Sh LIBRARY
Kerberos 5 Library (libkrb5, -lkrb5)
.Sh SYNOPSIS
.In krb5.h
.Pp
.Li "struct krb5_storage;"
.Pp
.Ft "krb5_storage *"
.Fn krb5_storage_from_fd "int fd"
.Ft "krb5_storage *"
.Fn krb5_storage_emem "void"
.Ft "krb5_storage *"
.Fn krb5_storage_from_mem "void *buf" "size_t len"
.Ft "krb5_storage *"
.Fn krb5_storage_from_data "krb5_data *data"
.Ft void
.Fn krb5_storage_set_flags "krb5_storage *sp" "krb5_flags flags"
.Ft void
.Fn krb5_storage_clear_flags "krb5_storage *sp" "krb5_flags flags"
.Ft krb5_boolean
.Fn krb5_storage_is_flags "krb5_storage *sp" "krb5_flags flags"
.Ft void
.Fn krb5_storage_set_byteorder "krb5_storage *sp" "krb5_flags byteorder"
.Ft krb5_flags
.Fn krb5_storage_get_byteorder "krb5_storage *sp" "krb5_flags byteorder"
.Ft void
.Fn krb5_storage_set_eof_code "krb5_storage *sp" "int code"
.Ft off_t
.Fn krb5_storage_seek "krb5_storage *sp" "off_t offset" "int whence"
.Ft krb5_ssize_t
.Fn krb5_storage_read "krb5_storage *sp" "void *buf" "size_t len"
.Ft krb5_ssize_t
.Fn krb5_storage_write "krb5_storage *sp" "const void *buf" "size_t len"
.Ft krb5_error_code
.Fn krb5_storage_free "krb5_storage *sp"
.Ft krb5_error_code
.Fn krb5_storage_to_data "krb5_storage *sp" "krb5_data *data"
.Ft krb5_error_code
.Fn krb5_store_int32 "krb5_storage *sp" "int32_t value"
.Ft krb5_error_code
.Fn krb5_ret_int32 "krb5_storage *sp" "int32_t *value"
.Ft krb5_error_code
.Fn krb5_store_int16 "krb5_storage *sp" "int16_t value"
.Ft krb5_error_code
.Fn krb5_ret_int16 "krb5_storage *sp" "int16_t *value"
.Ft krb5_error_code
.Fn krb5_store_int8 "krb5_storage *sp" "int8_t value"
.Ft krb5_error_code
.Fn krb5_ret_int8 "krb5_storage *sp" "int8_t *value"
.Ft krb5_error_code
.Fn krb5_store_data "krb5_storage *sp" "krb5_data data"
.Ft krb5_error_code
.Fn krb5_ret_data "krb5_storage *sp" "krb5_data *data"
.Ft krb5_error_code
.Fn krb5_store_string "krb5_storage *sp" "const char *s"
.Ft krb5_error_code
.Fn krb5_ret_string "krb5_storage *sp" "char **string"
.Ft krb5_error_code
.Fn krb5_store_stringz "krb5_storage *sp" "const char *s"
.Ft krb5_error_code
.Fn krb5_ret_stringz "krb5_storage *sp" "char **string"
.Ft krb5_error_code
.Fn krb5_store_principal "krb5_storage *sp" "krb5_principal p"
.Ft krb5_error_code
.Fn krb5_ret_principal "krb5_storage *sp" "krb5_principal *princ"
.Ft krb5_error_code
.Fn krb5_store_keyblock "krb5_storage *sp" "krb5_keyblock p"
.Ft krb5_error_code
.Fn krb5_ret_keyblock "krb5_storage *sp" "krb5_keyblock *p"
.Ft krb5_error_code
.Fn krb5_store_times "krb5_storage *sp" "krb5_times times"
.Ft krb5_error_code
.Fn krb5_ret_times "krb5_storage *sp" "krb5_times *times"
.Ft krb5_error_code
.Fn krb5_store_address "krb5_storage *sp" "krb5_address p"
.Ft krb5_error_code
.Fn krb5_ret_address "krb5_storage *sp" "krb5_address *adr"
.Ft krb5_error_code
.Fn krb5_store_addrs "krb5_storage *sp" "krb5_addresses p"
.Ft krb5_error_code
.Fn krb5_ret_addrs "krb5_storage *sp" "krb5_addresses *adr"
.Ft krb5_error_code
.Fn krb5_store_authdata "krb5_storage *sp" "krb5_authdata auth"
.Ft krb5_error_code
.Fn krb5_ret_authdata "krb5_storage *sp" "krb5_authdata *auth"
.Ft krb5_error_code
.Fn krb5_store_creds "krb5_storage *sp" "krb5_creds *creds"
.Ft krb5_error_code
.Fn krb5_ret_creds "krb5_storage *sp" "krb5_creds *creds"
.Sh DESCRIPTION
The
.Li krb5_storage
structure holds a storage element that is used for data manipulation.
The structure contains no public accessible elements.
.Pp
.Fn krb5_storage_emem
create a memory based krb5 storage unit that dynamicly resized to the
ammount of data stored in.
The storage never returns errors, on memory allocation errors
.Xr exit 3
will be called.
.Pp
.Fn krb5_storage_from_data
create a krb5 storage unit that will read is data from a
.Li krb5_data .
There is no copy made of the
.Fa data ,
so the caller must not free
.Fa data
until the storage is freed.
.Pp
.Fn krb5_storage_from_fd
create a krb5 storage unit that will read is data from a
file descriptor.
The descriptor must be seekable if
.Fn krb5_storage_seek
is used.
Caller must not free the file descriptor before the storage is freed.
.Pp
.Fn krb5_storage_from_mem
create a krb5 storage unit that will read is data from a
memory region.
There is no copy made of the
.Fa data ,
so the caller must not free
.Fa data
until the storage is freed.
.Pp
.Fn krb5_storage_set_flags
and
.Fn krb5_storage_clear_flags
modifies the behavior of the storage functions.
.Pp
.Bl -tag -compact -offset indent
.It KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS
Stores the number of principal componets one too many when storing
principal namees, used for compatibility with version 1 of file
keytabs and version 1 of file credential caches.
.It KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE
Doesn't store the name type in when storing a principal name, used for
compatibility with version 1 of file keytabs and version 1 of file
credential caches.
.It KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE
Stores the keyblock type twice storing a keyblock, used for
compatibility version 3 of file credential caches.
.It KRB5_STORAGE_BYTEORDER_MASK
bitmask that can be used to and out what type of byte order order is used.
.It KRB5_STORAGE_BYTEORDER_BE
Store integers in in big endian byte order, this is the default mode.
.It KRB5_STORAGE_BYTEORDER_LE
Store integers in in little endian byte order.
.It KRB5_STORAGE_BYTEORDER_HOST
Stores the integers in host byte order, used for compatibility with
version 1 of file keytabs and version 1 and 2 of file credential
caches.
.El
.Pp
.Fn krb5_storage_set_byteorder
and
.Fn krb5_storage_get_byteorder
modifies the byte order used in the storage for integers.
The flags used is same as above.
The valid flags are
.Dv KRB5_STORAGE_BYTEORDER_BE ,
.Dv KRB5_STORAGE_BYTEORDER_LE
and
.Dv KRB5_STORAGE_BYTEORDER_HOST .
.Pp
.Fn krb5_storage_set_eof_code
sets the error code that will be returned on end of file condition to
.Fa code .
.Pp
.Fn krb5_storage_seek
seeks
.Fa offset
bytes in the storage
.Fa sp .
The
.Fa whence
argument is one of
.Bl -tag -compact -offset indent
.It SEEK_SET
offset is from begining of storage.
.It SEEK_CUR
offset is relative from current offset.
.It SEEK_END
offset is from end of storage.
.El
.Pp
.Fn krb5_storage_read
reads
.Fa len
(or less bytes in case of end of file) into
.Fa buf
from the current offset in the storage
.Fa sp .
.Pp
.Fn krb5_storage_write
writes
.Fa len
or (less bytes in case of end of file) from
.Fa buf
from the current offset in the storage
.Fa sp .
.Pp
.Fn krb5_storage_free
frees the storage
.Fa sp .
.Pp
.Fn krb5_storage_to_data
converts the data in storage
.Fa sp
into a
.Li krb5_data
structure.
.Fa data
must be freed with
.Fn krb5_data_free
by the caller when done with the
.Fa data .
.Pp
All
.Li krb5_store
and
.Li krb5_ret
functions move the current offset forward when the functions returns.
.Pp
.Fn krb5_store_int32 ,
.Fn krb5_ret_int32 ,
.Fn krb5_store_int16 ,
.Fn krb5_ret_int16 ,
.Fn krb5_store_int8 ,
and
.Fn krb5_ret_int8
stores and reads an integer from
.Fa sp
in the byte order specified by the flags set on the
.Fa sp .
.Pp
.Fn krb5_store_data
and
.Fn krb5_ret_data
store and reads a krb5_data.
The length of the data is stored with
.Fn krb5_store_int32 .
.Pp
.Fn krb5_store_string
and
.Fn krb5_ret_string
store and reads a string by storing the length of the string with
.Fn krb5_store_int32
followed by the string itself.
.Pp
.Fn krb5_store_stringz
and
.Fn krb5_ret_stringz
store and reads a string by storing string followed by a
.Dv NUL .
.Pp
.Fn krb5_store_principal
and
.Fn krb5_ret_principal
store and reads a principal.
.Pp
.Fn krb5_store_keyblock
and
.Fn krb5_ret_keyblock
store and reads a
.Li krb5_keyblock .
.Pp
.Fn krb5_store_times
.Fn krb5_ret_times
store and reads
.Li krb5_times
structure .
.Pp
.Fn krb5_store_address
and
.Fn krb5_ret_address
store and reads a
.Li krb5_address .
.Pp
.Fn krb5_store_addrs
and
.Fn krb5_ret_addrs
store and reads a
.Li krb5_addresses .
.Pp
.Fn krb5_store_authdata
and
.Fn krb5_ret_authdata
store and reads a
.Li krb5_authdata .
.Pp
.Fn krb5_store_creds
and
.Fn krb5_ret_creds
store and reads a
.Li krb5_creds .
.Sh SEE ALSO
.Xr krb5 3 ,
.Xr krb5_data 3 ,
.Xr kerberos 8