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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/switchctl/../switchd/imsg_util.c	Lines:	0	68	0.0 %
Date:	2017-11-13	Branches:	0	38	0.0 %


/*	$OpenBSD: imsg_util.c,v 1.5 2016/09/30 11:57:57 reyk Exp $	*/

/*
 * Copyright (c) 2010-2016 Reyk Floeter <reyk@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 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/queue.h>
#include <sys/socket.h>
#include <sys/uio.h>

#include <net/if.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <event.h>
#include <imsg.h>

#include "switchd.h"

/*
 * Extending the imsg buffer API for internal use
 */

int
ibuf_cat(struct ibuf *dst, struct ibuf *src)
{
	return (ibuf_add(dst, src->buf, ibuf_size(src)));
}

void
ibuf_zero(struct ibuf *buf)
{
	explicit_bzero(buf->buf, buf->wpos);
}

void
ibuf_reset(struct ibuf *buf)
{
	ibuf_zero(buf);
	buf->rpos = buf->wpos = 0;
}

struct ibuf *
ibuf_new(void *data, size_t len)
{
	struct ibuf	*buf;

	if ((buf = ibuf_dynamic(len,
	    SWITCHD_MSGBUF_MAX)) == NULL)
		return (NULL);

	ibuf_zero(buf);

	if (data == NULL && len) {
		if (ibuf_advance(buf, len) == NULL) {
			ibuf_free(buf);
			return (NULL);
		}
	} else {
		if (ibuf_add(buf, data, len) != 0) {
			ibuf_free(buf);
			return (NULL);
		}
	}

	return (buf);
}

struct ibuf *
ibuf_static(void)
{
	struct ibuf	*buf;

	if ((buf = ibuf_open(SWITCHD_MSGBUF_MAX)) == NULL)
		return (NULL);

	ibuf_zero(buf);

	return (buf);
}

void *
ibuf_advance(struct ibuf *buf, size_t len)
{
	void	*ptr;

	if ((ptr = ibuf_reserve(buf, len)) != NULL)
		memset(ptr, 0, len);

	return (ptr);
}

void
ibuf_release(struct ibuf *buf)
{
	if (buf == NULL)
		return;
	if (buf->buf != NULL) {
		ibuf_zero(buf);
		free(buf->buf);
	}
	free(buf);
}

size_t
ibuf_length(struct ibuf *buf)
{
	if (buf == NULL || buf->buf == NULL)
		return (0);
	return (ibuf_size(buf));
}

uint8_t *
ibuf_data(struct ibuf *buf)
{
	return (ibuf_seek(buf, 0, 0));
}

void *
ibuf_getdata(struct ibuf *buf, size_t len)
{
	void	*data;

	if ((data = ibuf_seek(buf, buf->rpos, len)) == NULL)
		return (NULL);
	buf->rpos += len;

	return (data);
}

ssize_t
ibuf_dataleft(struct ibuf *buf)
{
	return (buf->wpos - buf->rpos);
}

size_t
ibuf_dataoffset(struct ibuf *buf)
{
	return (buf->rpos);
}

struct ibuf *
ibuf_get(struct ibuf *buf, size_t len)
{
	void		*data;

	if ((data = ibuf_getdata(buf, len)) == NULL)
		return (NULL);

	return (ibuf_new(data, len));
}

struct ibuf *
ibuf_dup(struct ibuf *buf)
{
	if (buf == NULL)
		return (NULL);
	return (ibuf_new(ibuf_data(buf), ibuf_size(buf)));
}

struct ibuf *
ibuf_random(size_t len)
{
	struct ibuf	*buf;
	void		*ptr;

	if ((buf = ibuf_open(len)) == NULL)
		return (NULL);
	if ((ptr = ibuf_reserve(buf, len)) == NULL) {
		ibuf_free(buf);
		return (NULL);
	}
	arc4random_buf(ptr, len);
	return (buf);
}

int
ibuf_setsize(struct ibuf *buf, size_t len)
{
	if (len > buf->size)
		return (-1);
	buf->wpos = len;
	return (0);
}

int
ibuf_setmax(struct ibuf *buf, size_t len)
{
	if (len > buf->size)
		return (-1);
	buf->max = len;
	return (0);
}

int
ibuf_prepend(struct ibuf *buf, void *data, size_t len)
{
	struct ibuf	*new;

	/* Swap buffers (we could also use memmove here) */
	if ((new = ibuf_new(data, len)) == NULL)
		return (-1);
	if (ibuf_cat(new, buf) == -1) {
		ibuf_release(new);
		return (-1);
	}
	free(buf->buf);
	memcpy(buf, new, sizeof(*buf));
	free(new);

	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: imsg_util.c,v 1.5 2016/09/30 11:57:57 reyk Exp $ */
2
3			/*
4			* Copyright (c) 2010-2016 Reyk Floeter <reyk@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 USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/queue.h>
20			#include <sys/socket.h>
21			#include <sys/uio.h>
22
23			#include <net/if.h>
24			#include <netinet/in_systm.h>
25			#include <netinet/in.h>
26			#include <netinet/ip.h>
27			#include <netinet/tcp.h>
28			#include <arpa/inet.h>
29			#include <netdb.h>
30
31			#include <stdio.h>
32			#include <stdlib.h>
33			#include <unistd.h>
34			#include <string.h>
35			#include <errno.h>
36			#include <fcntl.h>
37			#include <ctype.h>
38			#include <event.h>
39			#include <imsg.h>
40
41			#include "switchd.h"
42
43			/*
44			* Extending the imsg buffer API for internal use
45			*/
46
47			int
48			ibuf_cat(struct ibuf dst, struct ibuf src)
49			{
50			return (ibuf_add(dst, src->buf, ibuf_size(src)));
51			}
52
53			void
54			ibuf_zero(struct ibuf *buf)
55			{
56			explicit_bzero(buf->buf, buf->wpos);
57			}
58
59			void
60			ibuf_reset(struct ibuf *buf)
61			{
62			ibuf_zero(buf);
63			buf->rpos = buf->wpos = 0;
64			}
65
66			struct ibuf *
67			ibuf_new(void *data, size_t len)
68			{
69			struct ibuf *buf;
70
71			if ((buf = ibuf_dynamic(len,
72			SWITCHD_MSGBUF_MAX)) == NULL)
73			return (NULL);
74
75			ibuf_zero(buf);
76
77			if (data == NULL && len) {
78			if (ibuf_advance(buf, len) == NULL) {
79			ibuf_free(buf);
80			return (NULL);
81			}
82			} else {
83			if (ibuf_add(buf, data, len) != 0) {
84			ibuf_free(buf);
85			return (NULL);
86			}
87			}
88
89			return (buf);
90			}
91
92			struct ibuf *
93			ibuf_static(void)
94			{
95			struct ibuf *buf;
96
97			if ((buf = ibuf_open(SWITCHD_MSGBUF_MAX)) == NULL)
98			return (NULL);
99
100			ibuf_zero(buf);
101
102			return (buf);
103			}
104
105			void *
106			ibuf_advance(struct ibuf *buf, size_t len)
107			{
108			void *ptr;
109
110			if ((ptr = ibuf_reserve(buf, len)) != NULL)
111			memset(ptr, 0, len);
112
113			return (ptr);
114			}
115
116			void
117			ibuf_release(struct ibuf *buf)
118			{
119			if (buf == NULL)
120			return;
121			if (buf->buf != NULL) {
122			ibuf_zero(buf);
123			free(buf->buf);
124			}
125			free(buf);
126			}
127
128			size_t
129			ibuf_length(struct ibuf *buf)
130			{
131			if (buf == NULL \|\| buf->buf == NULL)
132			return (0);
133			return (ibuf_size(buf));
134			}
135
136			uint8_t *
137			ibuf_data(struct ibuf *buf)
138			{
139			return (ibuf_seek(buf, 0, 0));
140			}
141
142			void *
143			ibuf_getdata(struct ibuf *buf, size_t len)
144			{
145			void *data;
146
147			if ((data = ibuf_seek(buf, buf->rpos, len)) == NULL)
148			return (NULL);
149			buf->rpos += len;
150
151			return (data);
152			}
153
154			ssize_t
155			ibuf_dataleft(struct ibuf *buf)
156			{
157			return (buf->wpos - buf->rpos);
158			}
159
160			size_t
161			ibuf_dataoffset(struct ibuf *buf)
162			{
163			return (buf->rpos);
164			}
165
166			struct ibuf *
167			ibuf_get(struct ibuf *buf, size_t len)
168			{
169			void *data;
170
171			if ((data = ibuf_getdata(buf, len)) == NULL)
172			return (NULL);
173
174			return (ibuf_new(data, len));
175			}
176
177			struct ibuf *
178			ibuf_dup(struct ibuf *buf)
179			{
180			if (buf == NULL)
181			return (NULL);
182			return (ibuf_new(ibuf_data(buf), ibuf_size(buf)));
183			}
184
185			struct ibuf *
186			ibuf_random(size_t len)
187			{
188			struct ibuf *buf;
189			void *ptr;
190
191			if ((buf = ibuf_open(len)) == NULL)
192			return (NULL);
193			if ((ptr = ibuf_reserve(buf, len)) == NULL) {
194			ibuf_free(buf);
195			return (NULL);
196			}
197			arc4random_buf(ptr, len);
198			return (buf);
199			}
200
201			int
202			ibuf_setsize(struct ibuf *buf, size_t len)
203			{
204			if (len > buf->size)
205			return (-1);
206			buf->wpos = len;
207			return (0);
208			}
209
210			int
211			ibuf_setmax(struct ibuf *buf, size_t len)
212			{
213			if (len > buf->size)
214			return (-1);
215			buf->max = len;
216			return (0);
217			}
218
219			int
220			ibuf_prepend(struct ibuf buf, void data, size_t len)
221			{
222			struct ibuf *new;
223
224			/* Swap buffers (we could also use memmove here) */
225			if ((new = ibuf_new(data, len)) == NULL)
226			return (-1);
227			if (ibuf_cat(new, buf) == -1) {
228			ibuf_release(new);
229			return (-1);
230			}
231			free(buf->buf);
232			memcpy(buf, new, sizeof(*buf));
233			free(new);
234
235			return (0);
236			}