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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/isakmpd/field.c	Lines:	0	56	0.0 %
Date:	2016-12-06	Branches:	0	28	0.0 %


/* $OpenBSD: field.c,v 1.20 2015/06/03 02:24:36 millert 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 "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 = NULL;
	u_int32_t       val;

	if (extract_val(buf, len, &val))
		return 0;
	/* 3 decimal digits are enough to represent each byte.  */
	(void)asprintf(&retval, "%u", val);
	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 0;

	/* Size for brackets, two spaces and a NUL terminator.  */
	buf_sz = 4;
	retval = malloc(buf_sz);
	if (!retval)
		return 0;

	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 0;
			}
			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 0;
}

/*
 * 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 0;

	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 1.20 2015/06/03 02:24:36 millert 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
36			#include "constants.h"
37			#include "field.h"
38			#include "log.h"
39			#include "util.h"
40
41			static char field_debug_raw(u_int8_t , size_t, struct constant_map **);
42			static char field_debug_num(u_int8_t , size_t, struct constant_map **);
43			static char field_debug_mask(u_int8_t , size_t, struct constant_map **);
44			static char field_debug_ign(u_int8_t , size_t, struct constant_map **);
45			static char field_debug_cst(u_int8_t , size_t, struct constant_map **);
46
47			/* Contents must match the enum in struct field. */
48			static char (decode_field[]) (u_int8_t *, size_t,
49			struct constant_map **) = {
50			field_debug_raw,
51			field_debug_num,
52			field_debug_mask,
53			field_debug_ign,
54			field_debug_cst
55			};
56
57			/*
58			* Return a string showing the hexadecimal contents of the LEN-sized buffer
59			* BUF. MAPS should be zero and is only here because the API requires it.
60			*/
61			static char *
62			field_debug_raw(u_int8_t buf, size_t len, struct constant_map *maps)
63			{
64			return raw2hex(buf, len);
65			}
66
67			/*
68			* Convert the unsigned LEN-sized number at BUF of network byteorder to a
69			* 32-bit unsigned integer of host byteorder pointed to by VAL.
70			*/
71			static int
72			extract_val(u_int8_t buf, size_t len, u_int32_t val)
73			{
74			switch (len) {
75			case 1:
76			val = buf;
77			break;
78			case 2:
79			*val = decode_16(buf);
80			break;
81			case 4:
82			*val = decode_32(buf);
83			break;
84			default:
85			return -1;
86			}
87			return 0;
88			}
89
90			/*
91			* Return a textual representation of the unsigned number pointed to by BUF
92			* which is LEN octets long. MAPS should be zero and is only here because
93			* the API requires it.
94			*/
95			static char *
96			field_debug_num(u_int8_t buf, size_t len, struct constant_map *maps)
97			{
98			char *retval = NULL;
99			u_int32_t val;
100
101			if (extract_val(buf, len, &val))
102			return 0;
103			/* 3 decimal digits are enough to represent each byte. */
104			(void)asprintf(&retval, "%u", val);
105			return retval;
106			}
107
108			/*
109			* Return the symbolic names of the flags pointed to by BUF which is LEN
110			* octets long, using the constant maps MAPS.
111			*/
112			static char *
113			field_debug_mask(u_int8_t buf, size_t len, struct constant_map *maps)
114			{
115			u_int32_t val;
116			u_int32_t bit;
117			char retval, new_buf, *name;
118			size_t buf_sz;
119
120			if (extract_val(buf, len, &val))
121			return 0;
122
123			/* Size for brackets, two spaces and a NUL terminator. */
124			buf_sz = 4;
125			retval = malloc(buf_sz);
126			if (!retval)
127			return 0;
128
129			strlcpy(retval, "[ ", buf_sz);
130			for (bit = 1; bit; bit <<= 1) {
131			if (val & bit) {
132			name = constant_name_maps(maps, bit);
133			buf_sz += strlen(name) + 1;
134			new_buf = realloc(retval, buf_sz);
135			if (!new_buf) {
136			free(retval);
137			return 0;
138			}
139			retval = new_buf;
140			strlcat(retval, name, buf_sz);
141			strlcat(retval, " ", buf_sz);
142			}
143			}
144			strlcat(retval, "]", buf_sz);
145			return retval;
146			}
147
148			/*
149			* Just a dummy needed to skip the unused LEN sized space at BUF. MAPS
150			* should be zero and is only here because the API requires it.
151			*/
152			static char *
153			field_debug_ign(u_int8_t buf, size_t len, struct constant_map *maps)
154			{
155			return 0;
156			}
157
158			/*
159			* Return the symbolic name of a constant pointed to by BUF which is LEN
160			* octets long, using the constant maps MAPS.
161			*/
162			static char *
163			field_debug_cst(u_int8_t buf, size_t len, struct constant_map *maps)
164			{
165			u_int32_t val;
166
167			if (extract_val(buf, len, &val))
168			return 0;
169
170			return strdup(constant_name_maps(maps, val));
171			}
172
173			/* Pretty-print a field from BUF as described by F. */
174			void
175			field_dump_field(struct field f, u_int8_t buf)
176			{
177			char *value;
178
179			value = decode_field[(int) f->type] (buf + f->offset, f->len, f->maps);
180			if (value) {
181			LOG_DBG((LOG_MESSAGE, 70, "%s: %s", f->name, value));
182			free(value);
183			}
184			}
185
186			/* Pretty-print all the fields of BUF as described in FIELDS. */
187			void
188			field_dump_payload(struct field fields, u_int8_t buf)
189			{
190			struct field *field;
191
192			for (field = fields; field->name; field++)
193			field_dump_field(field, buf);
194			}
195
196			/* Return the numeric value of the field F of BUF. */
197			u_int32_t
198			field_get_num(struct field f, u_int8_t buf)
199			{
200			u_int32_t val;
201
202			if (extract_val(buf + f->offset, f->len, &val))
203			return 0;
204			return val;
205			}
206
207			/* Stash the number VAL into BUF's field F. */
208			void
209			field_set_num(struct field f, u_int8_t buf, u_int32_t val)
210			{
211			switch (f->len) {
212			case 1:
213			buf[f->offset] = val;
214			break;
215			case 2:
216			encode_16(buf + f->offset, val);
217			break;
218			case 4:
219			encode_32(buf + f->offset, val);
220			break;
221			}
222			}
223
224			/* Stash BUF's raw field F into VAL. */
225			void
226			field_get_raw(struct field f, u_int8_t buf, u_int8_t *val)
227			{
228			memcpy(val, buf + f->offset, f->len);
229			}
230
231			/* Stash the buffer VAL into BUF's field F. */
232			void
233			field_set_raw(struct field f, u_int8_t buf, u_int8_t *val)
234			{
235			memcpy(buf + f->offset, val, f->len);
236			}