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
|
/* acct_s.c - Send accounting event information to server.
*
* Copyright (C) 2010, Pawel Krawczyk <pawel.krawczyk@hush.com> and
* Jeroen Nijhof <jeroen@nijhofnet.nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program - see the file COPYING.
*
* See `CHANGES' file for revision history.
*/
#include "tacplus.h"
#include "libtac.h"
#include "xalloc.h"
/*
* return value:
* 0 : success
* < 0 : error status code, see LIBTAC_STATUS_...
* LIBTAC_STATUS_WRITE_ERR
* LIBTAC_STATUS_WRITE_TIMEOUT (pending impl)
* LIBTAC_STATUS_ASSEMBLY_ERR (pending impl)
*/
int tac_account_send(int fd, int type, const char *user, char *tty,
char *rem_addr, struct tac_attrib *attr) {
HDR *th;
struct acct tb;
u_char user_len, port_len, rem_addr_len;
struct tac_attrib *a;
int i = 0; /* arg count */
int pkt_len = 0;
int pktl = 0;
int w; /* write count */
u_char *pkt=NULL;
/* u_char *pktp; */ /* obsolute */
int ret = 0;
th = _tac_req_header(TAC_PLUS_ACCT, 0);
/* set header options */
th->version=TAC_PLUS_VER_0;
th->encryption=tac_encryption ? TAC_PLUS_ENCRYPTED_FLAG : TAC_PLUS_UNENCRYPTED_FLAG;
TACDEBUG((LOG_DEBUG, "%s: user '%s', tty '%s', rem_addr '%s', encrypt: %s, type: %s", \
__FUNCTION__, user, tty, rem_addr, \
(tac_encryption) ? "yes" : "no", \
(type == TAC_PLUS_ACCT_FLAG_START) ? "START" : "STOP"))
user_len=(u_char) strlen(user);
port_len=(u_char) strlen(tty);
rem_addr_len=(u_char) strlen(rem_addr);
tb.flags=(u_char) type;
tb.authen_method=tac_authen_method;
tb.priv_lvl=tac_priv_lvl;
if (strcmp(tac_login,"chap") == 0) {
tb.authen_type=TAC_PLUS_AUTHEN_TYPE_CHAP;
} else if(strcmp(tac_login,"login") == 0) {
tb.authen_type=TAC_PLUS_AUTHEN_TYPE_ASCII;
} else {
tb.authen_type=TAC_PLUS_AUTHEN_TYPE_PAP;
}
tb.authen_service=tac_authen_service;
tb.user_len=user_len;
tb.port_len=port_len;
tb.rem_addr_len=rem_addr_len;
/* allocate packet */
pkt=(u_char *) xcalloc(1, TAC_ACCT_REQ_FIXED_FIELDS_SIZE);
pkt_len=sizeof(tb);
/* fill attribute length fields */
a = attr;
while (a) {
pktl = pkt_len;
pkt_len += sizeof(a->attr_len);
pkt = (u_char*) xrealloc(pkt, pkt_len);
/* see comments in author_s.c
pktp=pkt + pkt_len;
pkt_len += sizeof(a->attr_len);
pkt = xrealloc(pkt, pkt_len);
*/
bcopy(&a->attr_len, pkt + pktl, sizeof(a->attr_len));
i++;
a = a->next;
}
/* fill the arg count field and add the fixed fields to packet */
tb.arg_cnt = i;
bcopy(&tb, pkt, TAC_ACCT_REQ_FIXED_FIELDS_SIZE);
/*
#define PUTATTR(data, len) \
pktp = pkt + pkt_len; \
pkt_len += len; \
pkt = xrealloc(pkt, pkt_len); \
bcopy(data, pktp, len);
*/
#define PUTATTR(data, len) \
pktl = pkt_len; \
pkt_len += len; \
pkt = (u_char*) xrealloc(pkt, pkt_len); \
bcopy(data, pkt + pktl, len);
/* fill user and port fields */
PUTATTR(user, user_len)
PUTATTR(tty, port_len)
PUTATTR(rem_addr, rem_addr_len)
/* fill attributes */
a = attr;
while(a) {
PUTATTR(a->attr, a->attr_len)
a = a->next;
}
/* finished building packet, fill len_from_header in header */
th->datalength = htonl(pkt_len);
/* write header */
w = write(fd, th, TAC_PLUS_HDR_SIZE);
if(w < TAC_PLUS_HDR_SIZE) {
TACSYSLOG((LOG_ERR, "%s: short write on header, wrote %d of %d: %m",\
__FUNCTION__, w, TAC_PLUS_HDR_SIZE))
free(pkt);
free(th);
return LIBTAC_STATUS_WRITE_ERR;
}
/* encrypt packet body */
_tac_crypt(pkt, th, pkt_len);
/* write body */
w=write(fd, pkt, pkt_len);
if(w < pkt_len) {
TACSYSLOG((LOG_ERR, "%s: short write on body, wrote %d of %d: %m",\
__FUNCTION__, w, pkt_len))
ret = LIBTAC_STATUS_WRITE_ERR;
}
free(pkt);
free(th);
TACDEBUG((LOG_DEBUG, "%s: exit status=%d", __FUNCTION__, ret))
return ret;
}
|
