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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/smtpd/smtpd/../table_proc.c	Lines:	0	122	0.0 %
Date:	2017-11-13	Branches:	0	60	0.0 %


/*	$OpenBSD: table_proc.c,v 1.6 2015/12/05 13:14:21 claudio Exp $	*/

/*
 * Copyright (c) 2013 Eric Faurot <eric@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/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>

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

#include "smtpd.h"
#include "log.h"

struct table_proc_priv {
	pid_t		pid;
	struct imsgbuf	ibuf;
};

static struct imsg	 imsg;
static size_t		 rlen;
static char		*rdata;

extern char	**environ;

static void
table_proc_call(struct table_proc_priv *p)
{
	ssize_t	n;

	if (imsg_flush(&p->ibuf) == -1) {
		log_warn("warn: table-proc: imsg_flush");
		fatalx("table-proc: exiting");
	}

	while (1) {
		if ((n = imsg_get(&p->ibuf, &imsg)) == -1) {
			log_warn("warn: table-proc: imsg_get");
			break;
		}
		if (n) {
			rlen = imsg.hdr.len - IMSG_HEADER_SIZE;
			rdata = imsg.data;

			if (imsg.hdr.type != PROC_TABLE_OK) {
				log_warnx("warn: table-proc: bad response");
				break;
			}
			return;
		}

		if ((n = imsg_read(&p->ibuf)) == -1 && errno != EAGAIN) {
			log_warn("warn: table-proc: imsg_read");
			break;
		}

		if (n == 0) {
			log_warnx("warn: table-proc: pipe closed");
			break;
		}
	}

	fatalx("table-proc: exiting");
}

static void
table_proc_read(void *dst, size_t len)
{
	if (len > rlen) {
		log_warnx("warn: table-proc: bad msg len");
		fatalx("table-proc: exiting");
	}

	if (dst)
		memmove(dst, rdata, len);

	rlen -= len;
	rdata += len;
}

static void
table_proc_end(void)
{
	if (rlen) {
		log_warnx("warn: table-proc: bogus data");
		fatalx("table-proc: exiting");
	}
	imsg_free(&imsg);
}

/*
 * API
 */

static void *
table_proc_open(struct table *table)
{
	struct table_proc_priv	*priv;
	struct table_open_params op;
	int			 fd;

	priv = xcalloc(1, sizeof(*priv), "table_proc_open");

	fd = fork_proc_backend("table", table->t_config, table->t_name);
	if (fd == -1)
		fatalx("table-proc: exiting");

	imsg_init(&priv->ibuf, fd);

	memset(&op, 0, sizeof op);
	op.version = PROC_TABLE_API_VERSION;
	(void)strlcpy(op.name, table->t_name, sizeof op.name);
	imsg_compose(&priv->ibuf, PROC_TABLE_OPEN, 0, 0, -1, &op, sizeof op);

	table_proc_call(priv);
	table_proc_end();

	return (priv);
}

static int
table_proc_update(struct table *table)
{
	struct table_proc_priv	*priv = table->t_handle;
	int r;

	imsg_compose(&priv->ibuf, PROC_TABLE_UPDATE, 0, 0, -1, NULL, 0);

	table_proc_call(priv);
	table_proc_read(&r, sizeof(r));
	table_proc_end();

	return (r);
}

static void
table_proc_close(void *arg)
{
	struct table_proc_priv	*priv = arg;

	imsg_compose(&priv->ibuf, PROC_TABLE_CLOSE, 0, 0, -1, NULL, 0);
	imsg_flush(&priv->ibuf);
}

static int
imsg_add_params(struct ibuf *buf, struct dict *params)
{
	size_t count;
	const char *key;
	char *value;
	void *iter;

	count = 0;
	if (params)
		count = dict_count(params);

	if (imsg_add(buf, &count, sizeof(count)) == -1)
		return (-1);

	if (count == 0)
		return (0);

	iter = NULL;
	while (dict_iter(params, &iter, &key, (void **)&value)) {
		if (imsg_add(buf, key, strlen(key) + 1) == -1)
			return (-1);
		if (imsg_add(buf, value, strlen(value) + 1) == -1)
			return (-1);
	}

	return (0);
}

static int
table_proc_lookup(void *arg, struct dict *params, const char *k, enum table_service s,
    union lookup *lk)
{
	struct table_proc_priv	*priv = arg;
	struct ibuf		*buf;
	int			 r;

	buf = imsg_create(&priv->ibuf,
	    lk ? PROC_TABLE_LOOKUP : PROC_TABLE_CHECK, 0, 0,
	    sizeof(s) + strlen(k) + 1);

	if (buf == NULL)
		return (-1);
	if (imsg_add(buf, &s, sizeof(s)) == -1)
		return (-1);
	if (imsg_add_params(buf, params) == -1)
		return (-1);
	if (imsg_add(buf, k, strlen(k) + 1) == -1)
		return (-1);
	imsg_close(&priv->ibuf, buf);

	table_proc_call(priv);
	table_proc_read(&r, sizeof(r));

	if (r == 1 && lk) {
		if (rlen == 0) {
			log_warnx("warn: table-proc: empty response");
			fatalx("table-proc: exiting");
		}
		if (rdata[rlen - 1] != '\0') {
			log_warnx("warn: table-proc: not NUL-terminated");
			fatalx("table-proc: exiting");
		}
		r = table_parse_lookup(s, k, rdata, lk);
		table_proc_read(NULL, rlen);
	}

	table_proc_end();

	return (r);
}

static int
table_proc_fetch(void *arg, struct dict *params, enum table_service s, union lookup *lk)
{
	struct table_proc_priv	*priv = arg;
	struct ibuf		*buf;
	int			 r;

	buf = imsg_create(&priv->ibuf, PROC_TABLE_FETCH, 0, 0, sizeof(s));
	if (buf == NULL)
		return (-1);
	if (imsg_add(buf, &s, sizeof(s)) == -1)
		return (-1);
	if (imsg_add_params(buf, params) == -1)
		return (-1);
	imsg_close(&priv->ibuf, buf);

	table_proc_call(priv);
	table_proc_read(&r, sizeof(r));

	if (r == 1) {
		if (rlen == 0) {
			log_warnx("warn: table-proc: empty response");
			fatalx("table-proc: exiting");
		}
		if (rdata[rlen - 1] != '\0') {
			log_warnx("warn: table-proc: not NUL-terminated");
			fatalx("table-proc: exiting");
		}
		r = table_parse_lookup(s, NULL, rdata, lk);
		table_proc_read(NULL, rlen);
	}

	table_proc_end();

	return (r);
}

struct table_backend table_backend_proc = {
	K_ANY,
	NULL,
	table_proc_open,
	table_proc_update,
	table_proc_close,
	table_proc_lookup,
	table_proc_fetch,
};


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: table_proc.c,v 1.6 2015/12/05 13:14:21 claudio Exp $ */
2
3			/*
4			* Copyright (c) 2013 Eric Faurot <eric@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/types.h>
20			#include <sys/queue.h>
21			#include <sys/tree.h>
22			#include <sys/socket.h>
23
24			#include <ctype.h>
25			#include <errno.h>
26			#include <event.h>
27			#include <fcntl.h>
28			#include <imsg.h>
29			#include <paths.h>
30			#include <stdio.h>
31			#include <stdlib.h>
32			#include <string.h>
33			#include <limits.h>
34			#include <unistd.h>
35
36			#include "smtpd.h"
37			#include "log.h"
38
39			struct table_proc_priv {
40			pid_t pid;
41			struct imsgbuf ibuf;
42			};
43
44			static struct imsg imsg;
45			static size_t rlen;
46			static char *rdata;
47
48			extern char **environ;
49
50			static void
51			table_proc_call(struct table_proc_priv *p)
52			{
53			ssize_t n;
54
55			if (imsg_flush(&p->ibuf) == -1) {
56			log_warn("warn: table-proc: imsg_flush");
57			fatalx("table-proc: exiting");
58			}
59
60			while (1) {
61			if ((n = imsg_get(&p->ibuf, &imsg)) == -1) {
62			log_warn("warn: table-proc: imsg_get");
63			break;
64			}
65			if (n) {
66			rlen = imsg.hdr.len - IMSG_HEADER_SIZE;
67			rdata = imsg.data;
68
69			if (imsg.hdr.type != PROC_TABLE_OK) {
70			log_warnx("warn: table-proc: bad response");
71			break;
72			}
73			return;
74			}
75
76			if ((n = imsg_read(&p->ibuf)) == -1 && errno != EAGAIN) {
77			log_warn("warn: table-proc: imsg_read");
78			break;
79			}
80
81			if (n == 0) {
82			log_warnx("warn: table-proc: pipe closed");
83			break;
84			}
85			}
86
87			fatalx("table-proc: exiting");
88			}
89
90			static void
91			table_proc_read(void *dst, size_t len)
92			{
93			if (len > rlen) {
94			log_warnx("warn: table-proc: bad msg len");
95			fatalx("table-proc: exiting");
96			}
97
98			if (dst)
99			memmove(dst, rdata, len);
100
101			rlen -= len;
102			rdata += len;
103			}
104
105			static void
106			table_proc_end(void)
107			{
108			if (rlen) {
109			log_warnx("warn: table-proc: bogus data");
110			fatalx("table-proc: exiting");
111			}
112			imsg_free(&imsg);
113			}
114
115			/*
116			* API
117			*/
118
119			static void *
120			table_proc_open(struct table *table)
121			{
122			struct table_proc_priv *priv;
123			struct table_open_params op;
124			int fd;
125
126			priv = xcalloc(1, sizeof(*priv), "table_proc_open");
127
128			fd = fork_proc_backend("table", table->t_config, table->t_name);
129			if (fd == -1)
130			fatalx("table-proc: exiting");
131
132			imsg_init(&priv->ibuf, fd);
133
134			memset(&op, 0, sizeof op);
135			op.version = PROC_TABLE_API_VERSION;
136			(void)strlcpy(op.name, table->t_name, sizeof op.name);
137			imsg_compose(&priv->ibuf, PROC_TABLE_OPEN, 0, 0, -1, &op, sizeof op);
138
139			table_proc_call(priv);
140			table_proc_end();
141
142			return (priv);
143			}
144
145			static int
146			table_proc_update(struct table *table)
147			{
148			struct table_proc_priv *priv = table->t_handle;
149			int r;
150
151			imsg_compose(&priv->ibuf, PROC_TABLE_UPDATE, 0, 0, -1, NULL, 0);
152
153			table_proc_call(priv);
154			table_proc_read(&r, sizeof(r));
155			table_proc_end();
156
157			return (r);
158			}
159
160			static void
161			table_proc_close(void *arg)
162			{
163			struct table_proc_priv *priv = arg;
164
165			imsg_compose(&priv->ibuf, PROC_TABLE_CLOSE, 0, 0, -1, NULL, 0);
166			imsg_flush(&priv->ibuf);
167			}
168
169			static int
170			imsg_add_params(struct ibuf buf, struct dict params)
171			{
172			size_t count;
173			const char *key;
174			char *value;
175			void *iter;
176
177			count = 0;
178			if (params)
179			count = dict_count(params);
180
181			if (imsg_add(buf, &count, sizeof(count)) == -1)
182			return (-1);
183
184			if (count == 0)
185			return (0);
186
187			iter = NULL;
188			while (dict_iter(params, &iter, &key, (void **)&value)) {
189			if (imsg_add(buf, key, strlen(key) + 1) == -1)
190			return (-1);
191			if (imsg_add(buf, value, strlen(value) + 1) == -1)
192			return (-1);
193			}
194
195			return (0);
196			}
197
198			static int
199			table_proc_lookup(void arg, struct dict params, const char *k, enum table_service s,
200			union lookup *lk)
201			{
202			struct table_proc_priv *priv = arg;
203			struct ibuf *buf;
204			int r;
205
206			buf = imsg_create(&priv->ibuf,
207			lk ? PROC_TABLE_LOOKUP : PROC_TABLE_CHECK, 0, 0,
208			sizeof(s) + strlen(k) + 1);
209
210			if (buf == NULL)
211			return (-1);
212			if (imsg_add(buf, &s, sizeof(s)) == -1)
213			return (-1);
214			if (imsg_add_params(buf, params) == -1)
215			return (-1);
216			if (imsg_add(buf, k, strlen(k) + 1) == -1)
217			return (-1);
218			imsg_close(&priv->ibuf, buf);
219
220			table_proc_call(priv);
221			table_proc_read(&r, sizeof(r));
222
223			if (r == 1 && lk) {
224			if (rlen == 0) {
225			log_warnx("warn: table-proc: empty response");
226			fatalx("table-proc: exiting");
227			}
228			if (rdata[rlen - 1] != '\0') {
229			log_warnx("warn: table-proc: not NUL-terminated");
230			fatalx("table-proc: exiting");
231			}
232			r = table_parse_lookup(s, k, rdata, lk);
233			table_proc_read(NULL, rlen);
234			}
235
236			table_proc_end();
237
238			return (r);
239			}
240
241			static int
242			table_proc_fetch(void arg, struct dict params, enum table_service s, union lookup *lk)
243			{
244			struct table_proc_priv *priv = arg;
245			struct ibuf *buf;
246			int r;
247
248			buf = imsg_create(&priv->ibuf, PROC_TABLE_FETCH, 0, 0, sizeof(s));
249			if (buf == NULL)
250			return (-1);
251			if (imsg_add(buf, &s, sizeof(s)) == -1)
252			return (-1);
253			if (imsg_add_params(buf, params) == -1)
254			return (-1);
255			imsg_close(&priv->ibuf, buf);
256
257			table_proc_call(priv);
258			table_proc_read(&r, sizeof(r));
259
260			if (r == 1) {
261			if (rlen == 0) {
262			log_warnx("warn: table-proc: empty response");
263			fatalx("table-proc: exiting");
264			}
265			if (rdata[rlen - 1] != '\0') {
266			log_warnx("warn: table-proc: not NUL-terminated");
267			fatalx("table-proc: exiting");
268			}
269			r = table_parse_lookup(s, NULL, rdata, lk);
270			table_proc_read(NULL, rlen);
271			}
272
273			table_proc_end();
274
275			return (r);
276			}
277
278			struct table_backend table_backend_proc = {
279			K_ANY,
280			NULL,
281			table_proc_open,
282			table_proc_update,
283			table_proc_close,
284			table_proc_lookup,
285			table_proc_fetch,
286			};