Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/ospfd/name2id.c	Lines:	5	71	7.0 %
Date:	2017-11-07	Branches:	1	60	1.7 %


/*	$OpenBSD: name2id.c,v 1.2 2007/06/19 16:45:15 reyk Exp $ */

/*
 * Copyright (c) 2004, 2005 Henning Brauer <henning@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>

#include <net/route.h>

#include <errno.h>
#include <stdlib.h>
#include <string.h>

#include "ospfd.h"

#define	IDVAL_MAX	50000

u_int16_t	 _name2id(struct n2id_labels *, const char *);
const char	*_id2name(struct n2id_labels *, u_int16_t);
u_int32_t	 _id2tag(struct n2id_labels *, u_int16_t);
u_int16_t	 _tag2id(struct n2id_labels *, u_int32_t);
void		 _tag(struct n2id_labels *, u_int16_t, u_int32_t);
void		 _unref(struct n2id_labels *, u_int16_t);
void		 _ref(struct n2id_labels *, u_int16_t);

struct n2id_labels	rt_labels = TAILQ_HEAD_INITIALIZER(rt_labels);

u_int16_t
rtlabel_name2id(const char *name)
{
	return (_name2id(&rt_labels, name));
}

const char *
rtlabel_id2name(u_int16_t id)
{
	return (_id2name(&rt_labels, id));
}

u_int32_t
rtlabel_id2tag(u_int16_t id)
{
	return (_id2tag(&rt_labels, id));
}

u_int16_t
rtlabel_tag2id(u_int32_t tag)
{
	return (_tag2id(&rt_labels, tag));
}

void
rtlabel_tag(u_int16_t id, u_int32_t tag)
{
	_tag(&rt_labels, id, tag);
}

void
rtlabel_unref(u_int16_t id)
{
	_unref(&rt_labels, id);
}

/*
void
rtlabel_ref(u_int16_t id)
{
	_ref(&rt_labels, id);
}
*/

u_int16_t
_name2id(struct n2id_labels *head, const char *name)
{
	struct n2id_label	*label, *p = NULL;
	u_int16_t		 new_id = 1;

	if (!name[0]) {
		errno = EINVAL;
		return (0);
	}

	TAILQ_FOREACH(label, head, entry)
		if (strcmp(name, label->name) == 0) {
			label->ref++;
			return (label->id);
		}

	/*
	 * to avoid fragmentation, we do a linear search from the beginning
	 * and take the first free slot we find. if there is none or the list
	 * is empty, append a new entry at the end.
	 */

	if (!TAILQ_EMPTY(head))
		for (p = TAILQ_FIRST(head); p != NULL &&
		    p->id == new_id; p = TAILQ_NEXT(p, entry))
			new_id = p->id + 1;

	if (new_id > IDVAL_MAX) {
		errno = ERANGE;
		return (0);
	}

	if ((label = calloc(1, sizeof(struct n2id_label))) == NULL)
		return (0);
	if ((label->name = strdup(name)) == NULL) {
		free(label);
		return (0);
	}
	label->id = new_id;
	label->ref++;

	if (p != NULL)	/* insert new entry before p */
		TAILQ_INSERT_BEFORE(p, label, entry);
	else		/* either list empty or no free slot in between */
		TAILQ_INSERT_TAIL(head, label, entry);

	return (label->id);
}

const char *
_id2name(struct n2id_labels *head, u_int16_t id)
{
	struct n2id_label	*label;

	if (id == 0)
		return ("");

	TAILQ_FOREACH(label, head, entry)
		if (label->id == id)
			return (label->name);

	return ("");
}

u_int32_t
_id2tag(struct n2id_labels *head, u_int16_t id)
{
	struct n2id_label	*label;

	if (id == 0)
		return (0);

	TAILQ_FOREACH(label, head, entry)
		if (label->id == id)
			return (label->ext_tag);

	return (0);
}

u_int16_t
_tag2id(struct n2id_labels *head, u_int32_t tag)
{
	struct n2id_label	*label;

	if (tag == 0)
		return (0);

	TAILQ_FOREACH(label, head, entry)
		if (label->ext_tag == tag)
			return (label->id);

	return (0);
}

void
_tag(struct n2id_labels *head, u_int16_t id, u_int32_t tag)
{
	struct n2id_label	*label;

	if (id == 0)
		return;

	TAILQ_FOREACH(label, head, entry)
		if (label->id == id)
			label->ext_tag = tag;
}

void
_unref(struct n2id_labels *head, u_int16_t id)
{
	struct n2id_label	*p, *next;

	if (id == 0)
		return;

	for (p = TAILQ_FIRST(head); p != NULL; p = next) {
		next = TAILQ_NEXT(p, entry);
		if (id == p->id) {
			if (--p->ref == 0) {
				TAILQ_REMOVE(head, p, entry);
				free(p->name);
				free(p);
			}
			break;
		}
	}
}

void
_ref(struct n2id_labels *head, u_int16_t id)
{
	struct n2id_label	*label;

	if (id == 0)
		return;

	TAILQ_FOREACH(label, head, entry)
		if (label->id == id) {
			++label->ref;
			break;
		}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: name2id.c,v 1.2 2007/06/19 16:45:15 reyk Exp $ */
2
3			/*
4			* Copyright (c) 2004, 2005 Henning Brauer <henning@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
15			* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
16			* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/types.h>
20			#include <sys/socket.h>
21
22			#include <net/route.h>
23
24			#include <errno.h>
25			#include <stdlib.h>
26			#include <string.h>
27
28			#include "ospfd.h"
29
30			#define IDVAL_MAX 50000
31
32			u_int16_t _name2id(struct n2id_labels , const char );
33			const char _id2name(struct n2id_labels , u_int16_t);
34			u_int32_t _id2tag(struct n2id_labels *, u_int16_t);
35			u_int16_t _tag2id(struct n2id_labels *, u_int32_t);
36			void _tag(struct n2id_labels *, u_int16_t, u_int32_t);
37			void _unref(struct n2id_labels *, u_int16_t);
38			void _ref(struct n2id_labels *, u_int16_t);
39
40			struct n2id_labels rt_labels = TAILQ_HEAD_INITIALIZER(rt_labels);
41
42			u_int16_t
43			rtlabel_name2id(const char *name)
44			{
45			return (_name2id(&rt_labels, name));
46			}
47
48			const char *
49			rtlabel_id2name(u_int16_t id)
50			{
51			return (_id2name(&rt_labels, id));
52			}
53
54			u_int32_t
55			rtlabel_id2tag(u_int16_t id)
56			{
57			return (_id2tag(&rt_labels, id));
58			}
59
60			u_int16_t
61			rtlabel_tag2id(u_int32_t tag)
62			{
63			return (_tag2id(&rt_labels, tag));
64			}
65
66			void
67			rtlabel_tag(u_int16_t id, u_int32_t tag)
68			{
69			_tag(&rt_labels, id, tag);
70			}
71
72			void
73			rtlabel_unref(u_int16_t id)
74			{
75		224	_unref(&rt_labels, id);
76		112	}
77
78			/*
79			void
80			rtlabel_ref(u_int16_t id)
81			{
82			_ref(&rt_labels, id);
83			}
84			*/
85
86			u_int16_t
87			_name2id(struct n2id_labels head, const char name)
88			{
89			struct n2id_label label, p = NULL;
90			u_int16_t new_id = 1;
91
92			if (!name[0]) {
93			errno = EINVAL;
94			return (0);
95			}
96
97			TAILQ_FOREACH(label, head, entry)
98			if (strcmp(name, label->name) == 0) {
99			label->ref++;
100			return (label->id);
101			}
102
103			/*
104			* to avoid fragmentation, we do a linear search from the beginning
105			* and take the first free slot we find. if there is none or the list
106			* is empty, append a new entry at the end.
107			*/
108
109			if (!TAILQ_EMPTY(head))
110			for (p = TAILQ_FIRST(head); p != NULL &&
111			p->id == new_id; p = TAILQ_NEXT(p, entry))
112			new_id = p->id + 1;
113
114			if (new_id > IDVAL_MAX) {
115			errno = ERANGE;
116			return (0);
117			}
118
119			if ((label = calloc(1, sizeof(struct n2id_label))) == NULL)
120			return (0);
121			if ((label->name = strdup(name)) == NULL) {
122			free(label);
123			return (0);
124			}
125			label->id = new_id;
126			label->ref++;
127
128			if (p != NULL) /* insert new entry before p */
129			TAILQ_INSERT_BEFORE(p, label, entry);
130			else /* either list empty or no free slot in between */
131			TAILQ_INSERT_TAIL(head, label, entry);
132
133			return (label->id);
134			}
135
136			const char *
137			_id2name(struct n2id_labels *head, u_int16_t id)
138			{
139			struct n2id_label *label;
140
141			if (id == 0)
142			return ("");
143
144			TAILQ_FOREACH(label, head, entry)
145			if (label->id == id)
146			return (label->name);
147
148			return ("");
149			}
150
151			u_int32_t
152			_id2tag(struct n2id_labels *head, u_int16_t id)
153			{
154			struct n2id_label *label;
155
156			if (id == 0)
157			return (0);
158
159			TAILQ_FOREACH(label, head, entry)
160			if (label->id == id)
161			return (label->ext_tag);
162
163			return (0);
164			}
165
166			u_int16_t
167			_tag2id(struct n2id_labels *head, u_int32_t tag)
168			{
169			struct n2id_label *label;
170
171			if (tag == 0)
172			return (0);
173
174			TAILQ_FOREACH(label, head, entry)
175			if (label->ext_tag == tag)
176			return (label->id);
177
178			return (0);
179			}
180
181			void
182			_tag(struct n2id_labels *head, u_int16_t id, u_int32_t tag)
183			{
184			struct n2id_label *label;
185
186			if (id == 0)
187			return;
188
189			TAILQ_FOREACH(label, head, entry)
190			if (label->id == id)
191			label->ext_tag = tag;
192			}
193
194			void
195			_unref(struct n2id_labels *head, u_int16_t id)
196			{
197			struct n2id_label p, next;
198
199	✓✗	224	if (id == 0)
200		112	return;
201
202			for (p = TAILQ_FIRST(head); p != NULL; p = next) {
203			next = TAILQ_NEXT(p, entry);
204			if (id == p->id) {
205			if (--p->ref == 0) {
206			TAILQ_REMOVE(head, p, entry);
207			free(p->name);
208			free(p);
209			}
210			break;
211			}
212			}
213		112	}
214
215			void
216			_ref(struct n2id_labels *head, u_int16_t id)
217			{
218			struct n2id_label *label;
219
220			if (id == 0)
221			return;
222
223			TAILQ_FOREACH(label, head, entry)
224			if (label->id == id) {
225			++label->ref;
226			break;
227			}
228			}