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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/isakmpd/field.c	Lines:	0	60	0.0 %
Date:	2017-11-07	Branches:	0	30	0.0 %


/* $OpenBSD: field.c,v 1.22 2017/04/02 21:23:44 tom Exp $	 */
/* $EOM: field.c,v 1.11 2000/02/20 19:58:37 niklas Exp $	 */

/*
 * Copyright (c) 1998, 1999 Niklas Hallqvist.  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 ``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 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.
 */

/*
 * This code was written under funding by Ericsson Radio Systems.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>

#include "constants.h"
#include "field.h"
#include "log.h"
#include "util.h"

static char    *field_debug_raw(u_int8_t *, size_t, struct constant_map **);
static char    *field_debug_num(u_int8_t *, size_t, struct constant_map **);
static char    *field_debug_mask(u_int8_t *, size_t, struct constant_map **);
static char    *field_debug_ign(u_int8_t *, size_t, struct constant_map **);
static char    *field_debug_cst(u_int8_t *, size_t, struct constant_map **);

/* Contents must match the enum in struct field.  */
static char    *(*decode_field[]) (u_int8_t *, size_t,
    struct constant_map **) = {
	field_debug_raw,
	field_debug_num,
	field_debug_mask,
	field_debug_ign,
	field_debug_cst
};

/*
 * Return a string showing the hexadecimal contents of the LEN-sized buffer
 * BUF.  MAPS should be zero and is only here because the API requires it.
 */
static char *
field_debug_raw(u_int8_t *buf, size_t len, struct constant_map **maps)
{
	return raw2hex(buf, len);
}

/*
 * Convert the unsigned LEN-sized number at BUF of network byteorder to a
 * 32-bit unsigned integer of host byteorder pointed to by VAL.
 */
static int
extract_val(u_int8_t *buf, size_t len, u_int32_t *val)
{
	switch (len) {
	case 1:
		*val = *buf;
		break;
	case 2:
		*val = decode_16(buf);
		break;
	case 4:
		*val = decode_32(buf);
		break;
	default:
		return -1;
	}
	return 0;
}

/*
 * Return a textual representation of the unsigned number pointed to by BUF
 * which is LEN octets long.  MAPS should be zero and is only here because
 * the API requires it.
 */
static char *
field_debug_num(u_int8_t *buf, size_t len, struct constant_map **maps)
{
	char           *retval;
	u_int32_t       val;

	if (extract_val(buf, len, &val))
		return NULL;
	if (asprintf(&retval, "%u", val) == -1)
		return NULL;
	return retval;
}

/*
 * Return the symbolic names of the flags pointed to by BUF which is LEN
 * octets long, using the constant maps MAPS.
 */
static char *
field_debug_mask(u_int8_t *buf, size_t len, struct constant_map **maps)
{
	u_int32_t       val;
	u_int32_t       bit;
	char           *retval, *new_buf, *name;
	size_t          buf_sz;

	if (extract_val(buf, len, &val))
		return NULL;

	/* Size for brackets, two spaces and a NUL terminator.  */
	buf_sz = 4;
	retval = malloc(buf_sz);
	if (!retval)
		return NULL;

	strlcpy(retval, "[ ", buf_sz);
	for (bit = 1; bit; bit <<= 1) {
		if (val & bit) {
			name = constant_name_maps(maps, bit);
			buf_sz += strlen(name) + 1;
			new_buf = realloc(retval, buf_sz);
			if (!new_buf) {
				free(retval);
				return NULL;
			}
			retval = new_buf;
			strlcat(retval, name, buf_sz);
			strlcat(retval, " ", buf_sz);
		}
	}
	strlcat(retval, "]", buf_sz);
	return retval;
}

/*
 * Just a dummy needed to skip the unused LEN sized space at BUF.  MAPS
 * should be zero and is only here because the API requires it.
 */
static char *
field_debug_ign(u_int8_t *buf, size_t len, struct constant_map **maps)
{
	return NULL;
}

/*
 * Return the symbolic name of a constant pointed to by BUF which is LEN
 * octets long, using the constant maps MAPS.
 */
static char *
field_debug_cst(u_int8_t *buf, size_t len, struct constant_map **maps)
{
	u_int32_t       val;

	if (extract_val(buf, len, &val))
		return NULL;

	return strdup(constant_name_maps(maps, val));
}

/* Pretty-print a field from BUF as described by F.  */
void
field_dump_field(struct field *f, u_int8_t *buf)
{
	char	*value;

	value = decode_field[(int) f->type] (buf + f->offset, f->len, f->maps);
	if (value) {
		LOG_DBG((LOG_MESSAGE, 70, "%s: %s", f->name, value));
		free(value);
	}
}

/* Pretty-print all the fields of BUF as described in FIELDS.  */
void
field_dump_payload(struct field *fields, u_int8_t *buf)
{
	struct field   *field;

	for (field = fields; field->name; field++)
		field_dump_field(field, buf);
}

/* Return the numeric value of the field F of BUF.  */
u_int32_t
field_get_num(struct field *f, u_int8_t *buf)
{
	u_int32_t       val;

	if (extract_val(buf + f->offset, f->len, &val))
		return 0;
	return val;
}

/* Stash the number VAL into BUF's field F.  */
void
field_set_num(struct field *f, u_int8_t *buf, u_int32_t val)
{
	switch (f->len) {
	case 1:
		buf[f->offset] = val;
		break;
	case 2:
		encode_16(buf + f->offset, val);
		break;
	case 4:
		encode_32(buf + f->offset, val);
		break;
	}
}

/* Stash BUF's raw field F into VAL.  */
void
field_get_raw(struct field *f, u_int8_t *buf, u_int8_t *val)
{
	memcpy(val, buf + f->offset, f->len);
}

/* Stash the buffer VAL into BUF's field F.  */
void
field_set_raw(struct field *f, u_int8_t *buf, u_int8_t *val)
{
	memcpy(buf + f->offset, val, f->len);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: field.c,v 1.22 2017/04/02 21:23:44 tom Exp $ */
2			/* $EOM: field.c,v 1.11 2000/02/20 19:58:37 niklas Exp $ */
3
4			/*
5			* Copyright (c) 1998, 1999 Niklas Hallqvist. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			*
16			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26			*/
27
28			/*
29			* This code was written under funding by Ericsson Radio Systems.
30			*/
31
32			#include <stdio.h>
33			#include <stdlib.h>
34			#include <string.h>
35			#include <netinet/in.h>
36
37			#include "constants.h"
38			#include "field.h"
39			#include "log.h"
40			#include "util.h"
41
42			static char field_debug_raw(u_int8_t , size_t, struct constant_map **);
43			static char field_debug_num(u_int8_t , size_t, struct constant_map **);
44			static char field_debug_mask(u_int8_t , size_t, struct constant_map **);
45			static char field_debug_ign(u_int8_t , size_t, struct constant_map **);
46			static char field_debug_cst(u_int8_t , size_t, struct constant_map **);
47
48			/* Contents must match the enum in struct field. */
49			static char (decode_field[]) (u_int8_t *, size_t,
50			struct constant_map **) = {
51			field_debug_raw,
52			field_debug_num,
53			field_debug_mask,
54			field_debug_ign,
55			field_debug_cst
56			};
57
58			/*
59			* Return a string showing the hexadecimal contents of the LEN-sized buffer
60			* BUF. MAPS should be zero and is only here because the API requires it.
61			*/
62			static char *
63			field_debug_raw(u_int8_t buf, size_t len, struct constant_map *maps)
64			{
65			return raw2hex(buf, len);
66			}
67
68			/*
69			* Convert the unsigned LEN-sized number at BUF of network byteorder to a
70			* 32-bit unsigned integer of host byteorder pointed to by VAL.
71			*/
72			static int
73			extract_val(u_int8_t buf, size_t len, u_int32_t val)
74			{
75			switch (len) {
76			case 1:
77			val = buf;
78			break;
79			case 2:
80			*val = decode_16(buf);
81			break;
82			case 4:
83			*val = decode_32(buf);
84			break;
85			default:
86			return -1;
87			}
88			return 0;
89			}
90
91			/*
92			* Return a textual representation of the unsigned number pointed to by BUF
93			* which is LEN octets long. MAPS should be zero and is only here because
94			* the API requires it.
95			*/
96			static char *
97			field_debug_num(u_int8_t buf, size_t len, struct constant_map *maps)
98			{
99			char *retval;
100			u_int32_t val;
101
102			if (extract_val(buf, len, &val))
103			return NULL;
104			if (asprintf(&retval, "%u", val) == -1)
105			return NULL;
106			return retval;
107			}
108
109			/*
110			* Return the symbolic names of the flags pointed to by BUF which is LEN
111			* octets long, using the constant maps MAPS.
112			*/
113			static char *
114			field_debug_mask(u_int8_t buf, size_t len, struct constant_map *maps)
115			{
116			u_int32_t val;
117			u_int32_t bit;
118			char retval, new_buf, *name;
119			size_t buf_sz;
120
121			if (extract_val(buf, len, &val))
122			return NULL;
123
124			/* Size for brackets, two spaces and a NUL terminator. */
125			buf_sz = 4;
126			retval = malloc(buf_sz);
127			if (!retval)
128			return NULL;
129
130			strlcpy(retval, "[ ", buf_sz);
131			for (bit = 1; bit; bit <<= 1) {
132			if (val & bit) {
133			name = constant_name_maps(maps, bit);
134			buf_sz += strlen(name) + 1;
135			new_buf = realloc(retval, buf_sz);
136			if (!new_buf) {
137			free(retval);
138			return NULL;
139			}
140			retval = new_buf;
141			strlcat(retval, name, buf_sz);
142			strlcat(retval, " ", buf_sz);
143			}
144			}
145			strlcat(retval, "]", buf_sz);
146			return retval;
147			}
148
149			/*
150			* Just a dummy needed to skip the unused LEN sized space at BUF. MAPS
151			* should be zero and is only here because the API requires it.
152			*/
153			static char *
154			field_debug_ign(u_int8_t buf, size_t len, struct constant_map *maps)
155			{
156			return NULL;
157			}
158
159			/*
160			* Return the symbolic name of a constant pointed to by BUF which is LEN
161			* octets long, using the constant maps MAPS.
162			*/
163			static char *
164			field_debug_cst(u_int8_t buf, size_t len, struct constant_map *maps)
165			{
166			u_int32_t val;
167
168			if (extract_val(buf, len, &val))
169			return NULL;
170
171			return strdup(constant_name_maps(maps, val));
172			}
173
174			/* Pretty-print a field from BUF as described by F. */
175			void
176			field_dump_field(struct field f, u_int8_t buf)
177			{
178			char *value;
179
180			value = decode_field[(int) f->type] (buf + f->offset, f->len, f->maps);
181			if (value) {
182			LOG_DBG((LOG_MESSAGE, 70, "%s: %s", f->name, value));
183			free(value);
184			}
185			}
186
187			/* Pretty-print all the fields of BUF as described in FIELDS. */
188			void
189			field_dump_payload(struct field fields, u_int8_t buf)
190			{
191			struct field *field;
192
193			for (field = fields; field->name; field++)
194			field_dump_field(field, buf);
195			}
196
197			/* Return the numeric value of the field F of BUF. */
198			u_int32_t
199			field_get_num(struct field f, u_int8_t buf)
200			{
201			u_int32_t val;
202
203			if (extract_val(buf + f->offset, f->len, &val))
204			return 0;
205			return val;
206			}
207
208			/* Stash the number VAL into BUF's field F. */
209			void
210			field_set_num(struct field f, u_int8_t buf, u_int32_t val)
211			{
212			switch (f->len) {
213			case 1:
214			buf[f->offset] = val;
215			break;
216			case 2:
217			encode_16(buf + f->offset, val);
218			break;
219			case 4:
220			encode_32(buf + f->offset, val);
221			break;
222			}
223			}
224
225			/* Stash BUF's raw field F into VAL. */
226			void
227			field_get_raw(struct field f, u_int8_t buf, u_int8_t *val)
228			{
229			memcpy(val, buf + f->offset, f->len);
230			}
231
232			/* Stash the buffer VAL into BUF's field F. */
233			void
234			field_set_raw(struct field f, u_int8_t buf, u_int8_t *val)
235			{
236			memcpy(buf + f->offset, val, f->len);
237			}