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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 1998, 2001, Juniper Networks, Inc.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef TACLIB_PRIVATE_H
#define TACLIB_PRIVATE_H
#include "taclib.h"
/* Defaults */
#define PATH_TACPLUS_CONF "/etc/tacplus.conf"
#define TACPLUS_PORT 49
#define TIMEOUT 3 /* In seconds */
/* Limits */
#define BODYSIZE 8150 /* Maximum message body size */
#define ERRSIZE 128 /* Maximum error message length */
#define MAXCONFLINE 1024 /* Maximum config file line length */
#define MAXSERVERS 10 /* Maximum number of servers to try */
#define MAXAVPAIRS 255 /* Maximum number of AV pairs */
/* Protocol constants. */
#define HDRSIZE 12 /* Size of message header */
/* Protocol version number */
#define TAC_VER_MAJOR 0xc /* Major version number */
/* Protocol packet types */
#define TAC_AUTHEN 0x01 /* Authentication */
#define TAC_AUTHOR 0x02 /* Authorization */
#define TAC_ACCT 0x03 /* Accouting */
/* Protocol header flags */
#define TAC_UNENCRYPTED 0x01
#define TAC_SINGLE_CONNECT 0x04
struct tac_server {
struct sockaddr_in addr; /* Address of server */
char *secret; /* Shared secret */
int timeout; /* Timeout in seconds */
int flags;
};
/*
* An optional string of bytes specified by the client for inclusion in
* a request. The data is always a dynamically allocated copy that
* belongs to the library. It is copied into the request packet just
* before sending the request.
*/
struct clnt_str {
void *data;
size_t len;
};
/*
* An optional string of bytes from a server response. The data resides
* in the response packet itself, and must not be freed.
*/
struct srvr_str {
const void *data;
size_t len;
};
struct tac_authen_start {
u_int8_t action;
u_int8_t priv_lvl;
u_int8_t authen_type;
u_int8_t service;
u_int8_t user_len;
u_int8_t port_len;
u_int8_t rem_addr_len;
u_int8_t data_len;
unsigned char rest[1];
};
struct tac_authen_reply {
u_int8_t status;
u_int8_t flags;
u_int16_t msg_len;
u_int16_t data_len;
unsigned char rest[1];
};
struct tac_authen_cont {
u_int16_t user_msg_len;
u_int16_t data_len;
u_int8_t flags;
unsigned char rest[1];
};
struct tac_author_request {
u_int8_t authen_meth;
u_int8_t priv_lvl;
u_int8_t authen_type;
u_int8_t service;
u_int8_t user_len;
u_int8_t port_len;
u_int8_t rem_addr_len;
u_int8_t av_cnt;
unsigned char rest[1];
};
struct tac_author_response {
u_int8_t status;
u_int8_t av_cnt;
u_int16_t msg_len;
u_int16_t data_len;
unsigned char rest[1];
};
struct tac_acct_start {
u_int8_t action;
u_int8_t authen_action;
u_int8_t priv_lvl;
u_int8_t authen_type;
u_int8_t authen_service;
u_int8_t user_len;
u_int8_t port_len;
u_int8_t rem_addr_len;
u_int8_t av_cnt;
unsigned char rest[1];
};
struct tac_acct_reply {
u_int16_t msg_len;
u_int16_t data_len;
u_int8_t status;
unsigned char rest[1];
};
struct tac_msg {
u_int8_t version;
u_int8_t type;
u_int8_t seq_no;
u_int8_t flags;
u_int8_t session_id[4];
u_int32_t length;
union {
struct tac_authen_start authen_start;
struct tac_authen_reply authen_reply;
struct tac_authen_cont authen_cont;
struct tac_author_request author_request;
struct tac_author_response author_response;
struct tac_acct_start acct_start;
struct tac_acct_reply acct_reply;
unsigned char body[BODYSIZE];
} u;
};
struct tac_handle {
int fd; /* Socket file descriptor */
struct tac_server servers[MAXSERVERS]; /* Servers to contact */
int num_servers; /* Number of valid server entries */
int cur_server; /* Server we are currently using */
int single_connect; /* Use a single connection */
int last_seq_no;
char errmsg[ERRSIZE]; /* Most recent error message */
struct clnt_str user;
struct clnt_str port;
struct clnt_str rem_addr;
struct clnt_str data;
struct clnt_str user_msg;
struct clnt_str avs[MAXAVPAIRS];
struct tac_msg request;
struct tac_msg response;
int srvr_pos; /* Scan position in response body */
struct srvr_str srvr_msg;
struct srvr_str srvr_data;
struct srvr_str srvr_avs[MAXAVPAIRS];
};
#endif
|
