1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
.\" Copyright (c) 2003 Kungliga Tekniska Högskolan
.\" (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: krb5_data.3,v 1.4 2003/04/16 13:58:13 lha Exp $
.\"
.Dd March 20, 2003
.Dt KRB5_DATA 3
.Os HEIMDAL
.Sh NAME
.Nm krb5_data
.Nm krb5_data_zero
.Nm krb5_data_free
.Nm krb5_free_data_contents
.Nm krb5_free_data
.Nm krb5_data_alloc
.Nm krb5_data_realloc
.Nm krb5_data_copy
.Nm krb5_copy_data
.Nd operates on the Kerberos datatype krb5_data.
.Sh LIBRARY
Kerberos 5 Library (libkrb5, -lkrb5)
.Sh SYNOPSIS
.In krb5.h
.Pp
.Li "struct krb5_data;"
.Ft void
.Fn krb5_data_zero "krb5_data *p"
.Ft void
.Fn krb5_data_free "krb5_data *p"
.Ft void
.Fn krb5_free_data_contents "krb5_context context" "krb5_data *p"
.Ft void
.Fn krb5_free_data "krb5_context context" "krb5_data *p"
.Ft krb5_error_code
.Fn krb5_data_alloc "krb5_data *p" "int len"
.Ft krb5_error_code
.Fn krb5_data_realloc "krb5_data *p" "int len"
.Ft krb5_error_code
.Fn krb5_data_copy "krb5_data *p" "const void *data" "size_t len"
.Ft krb5_error_code
.Fn krb5_copy_data "krb5_context context" "const krb5_data *indata" "krb5_data **outdata"
.Sh DESCRIPTION
The
.Li krb5_data
structure holds a data element.
The structure contains two public accessible elements
.Fa length
(the length of data)
and
.Fa data
(the data itself).
The structure must always be initiated and freed by the functions
documented in this manual.
.Pp
.Fn krb5_data_zero
resets the content of
.Fa p .
.Pp
.Fn krb5_data_free
free the data in
.Fa p .
.Pp
.Fn krb5_free_data_contents
works the same way as
.Fa krb5_data_free .
The diffrence is that krb5_free_data_contents is more portable (exists
in MIT api).
.Pp
.Fn krb5_free_data
frees the data in
.Fa p
and
.Fa p
itself .
.Pp
.Fn krb5_data_alloc
allocates
.Fa len
bytes in
.Fa p
Returns 0 or an error.
.Pp
.Fn krb5_data_realloc
reallocates the length of
.Fa p
to the length in
.Fa len .
Returns 0 or an error.
.Pp
.Fn krb5_data_copy
copies the
.Fa data
that have the length
.Fa len
into
.Fa p .
.Fa p
is not freed so the calling function should make sure the
.Fa p
doesn't contain anything needs to be freed.
Returns 0 or an error.
.Pp
.Fn krb5_copy_data
copies the
.Li krb5_data
in
.Fa indata
to
.Fa outdata .
.Fa outdata
is not freed so the calling function should make sure the
.Fa outdata
doesn't contain anything needs to be freed.
.Fa outdata
should be freed using
.Fn krb5_free_data .
Returns 0 or an error.
.Sh SEE ALSO
.Xr krb5 3 ,
.Xr krb5_storage 3 ,
.Xr kerberos 8
|
