File: portcon_query.c

package info (click to toggle)
setools 3.3.7-3
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 9,840 kB
  • sloc: ansic: 82,247; tcl: 13,145; cpp: 4,885; makefile: 1,603; yacc: 779; lex: 296; python: 57; sh: 50
file content (183 lines) | stat: -rw-r--r-- 4,605 bytes parent folder | download | duplicates (5)
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
/**
 *  @file
 *  Defines the public interface for searching and iterating over portcon statements.
 *
 *  @author Kevin Carr kcarr@tresys.com
 *  @author Jeremy A. Mowery jmowery@tresys.com
 *  @author Jason Tang jtang@tresys.com
 *
 *  Copyright (C) 2006-2007 Tresys Technology, LLC
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <netinet/in.h>
#include <qpol/iterator.h>
#include <qpol/policy.h>
#include <qpol/context_query.h>
#include <qpol/portcon_query.h>
#include <sepol/policydb/policydb.h>
#include "qpol_internal.h"
#include "iterator_internal.h"

int qpol_policy_get_portcon_by_port(const qpol_policy_t * policy, uint16_t low, uint16_t high, uint8_t protocol,
				    const qpol_portcon_t ** ocon)
{
	ocontext_t *tmp = NULL;
	policydb_t *db = NULL;

	if (ocon != NULL)
		*ocon = NULL;

	if (policy == NULL || ocon == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	db = &policy->p->p;
	for (tmp = db->ocontexts[OCON_PORT]; tmp; tmp = tmp->next) {
		if (tmp->u.port.low_port == low && tmp->u.port.high_port == high && tmp->u.port.protocol == protocol)
			break;
	}

	*ocon = (qpol_portcon_t *) tmp;

	if (*ocon == NULL) {
		ERR(policy, "could not find portcon statement for %u-%u:%u", low, high, protocol);
		errno = ENOENT;
		return STATUS_ERR;
	}

	return STATUS_SUCCESS;
}

int qpol_policy_get_portcon_iter(const qpol_policy_t * policy, qpol_iterator_t ** iter)
{
	policydb_t *db = NULL;
	int error = 0;
	ocon_state_t *os = NULL;

	if (iter != NULL)
		*iter = NULL;

	if (policy == NULL || iter == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	db = &policy->p->p;

	os = calloc(1, sizeof(ocon_state_t));
	if (os == NULL) {
		error = errno;
		ERR(policy, "%s", strerror(ENOMEM));
		errno = error;
		return STATUS_ERR;
	}

	os->head = os->cur = db->ocontexts[OCON_PORT];

	if (qpol_iterator_create(policy, (void *)os, ocon_state_get_cur,
				 ocon_state_next, ocon_state_end, ocon_state_size, free, iter)) {
		free(os);
		return STATUS_ERR;
	}

	return STATUS_SUCCESS;
}

int qpol_portcon_get_protocol(const qpol_policy_t * policy, const qpol_portcon_t * ocon, uint8_t * protocol)
{
	ocontext_t *internal_ocon = NULL;

	if (protocol != NULL)
		*protocol = 0;

	if (policy == NULL || ocon == NULL || protocol == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	internal_ocon = (ocontext_t *) ocon;

	*protocol = internal_ocon->u.port.protocol;

	return STATUS_SUCCESS;
}

int qpol_portcon_get_low_port(const qpol_policy_t * policy, const qpol_portcon_t * ocon, uint16_t * port)
{
	ocontext_t *internal_ocon = NULL;

	if (port != NULL)
		*port = 0;

	if (policy == NULL || ocon == NULL || port == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	internal_ocon = (ocontext_t *) ocon;

	*port = internal_ocon->u.port.low_port;

	return STATUS_SUCCESS;
}

int qpol_portcon_get_high_port(const qpol_policy_t * policy, const qpol_portcon_t * ocon, uint16_t * port)
{
	ocontext_t *internal_ocon = NULL;

	if (port != NULL)
		*port = 0;

	if (policy == NULL || ocon == NULL || port == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	internal_ocon = (ocontext_t *) ocon;

	*port = internal_ocon->u.port.high_port;

	return STATUS_SUCCESS;
}

int qpol_portcon_get_context(const qpol_policy_t * policy, const qpol_portcon_t * ocon, const qpol_context_t ** context)
{
	ocontext_t *internal_ocon = NULL;

	if (context != NULL)
		*context = NULL;

	if (policy == NULL || ocon == NULL || context == NULL) {
		ERR(policy, "%s", strerror(EINVAL));
		errno = EINVAL;
		return STATUS_ERR;
	}

	internal_ocon = (ocontext_t *) ocon;
	*context = (qpol_context_t *) & (internal_ocon->context[0]);

	return STATUS_SUCCESS;
}