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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/smtpd/smtpd/../table_db.c	Lines:	0	85	0.0 %
Date:	2017-11-07	Branches:	0	40	0.0 %


/*	$OpenBSD: table_db.c,v 1.9 2015/11/24 07:40:26 gilles Exp $	*/

/*
 * Copyright (c) 2011 Gilles Chehade <gilles@poolp.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/stat.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>

#include <netinet/in.h>
#include <arpa/inet.h>

#include <db.h>
#include <ctype.h>
#include <err.h>
#include <event.h>
#include <fcntl.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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


/* db(3) backend */
static int table_db_config(struct table *);
static int table_db_update(struct table *);
static void *table_db_open(struct table *);
static int table_db_lookup(void *, struct dict *, const char *, enum table_service, union lookup *);
static int table_db_fetch(void *, struct dict *, enum table_service, union lookup *);
static void  table_db_close(void *);

static char *table_db_get_entry(void *, const char *, size_t *);
static char *table_db_get_entry_match(void *, const char *, size_t *,
    int(*)(const char *, const char *));

struct table_backend table_backend_db = {
	K_ALIAS|K_CREDENTIALS|K_DOMAIN|K_NETADDR|K_USERINFO|K_SOURCE|K_MAILADDR|K_ADDRNAME|K_MAILADDRMAP,
	table_db_config,
	table_db_open,
	table_db_update,
	table_db_close,
	table_db_lookup,
	table_db_fetch,
};

static struct keycmp {
	enum table_service	service;
	int		       (*func)(const char *, const char *);
} keycmp[] = {
	{ K_DOMAIN, table_domain_match },
	{ K_NETADDR, table_netaddr_match },
	{ K_MAILADDR, table_mailaddr_match }
};

struct dbhandle {
	DB		*db;
	char		 pathname[PATH_MAX];
	time_t		 mtime;
	struct table	*table;
};

static int
table_db_config(struct table *table)
{
	struct dbhandle	       *handle;

	handle = table_db_open(table);
	if (handle == NULL)
		return 0;

	table_db_close(handle);
	return 1;
}

static int
table_db_update(struct table *table)
{
	struct dbhandle	*handle;

	handle = table_db_open(table);
	if (handle == NULL)
		return 0;

	table_db_close(table->t_handle);
	table->t_handle = handle;
	return 1;
}

static void *
table_db_open(struct table *table)
{
	struct dbhandle	       *handle;
	struct stat		sb;

	handle = xcalloc(1, sizeof *handle, "table_db_open");
	if (strlcpy(handle->pathname, table->t_config, sizeof handle->pathname)
	    >= sizeof handle->pathname)
		goto error;

	if (stat(handle->pathname, &sb) < 0)
		goto error;

	handle->mtime = sb.st_mtime;
	handle->db = dbopen(table->t_config, O_RDONLY, 0600, DB_HASH, NULL);
	if (handle->db == NULL)
		goto error;
	handle->table = table;

	return handle;

error:
	if (handle->db)
		handle->db->close(handle->db);
	free(handle);
	return NULL;
}

static void
table_db_close(void *hdl)
{
	struct dbhandle	*handle = hdl;
	handle->db->close(handle->db);
	free(handle);
}

static int
table_db_lookup(void *hdl, struct dict *params, const char *key, enum table_service service,
    union lookup *lk)
{
	struct dbhandle	*handle = hdl;
	struct table	*table = NULL;
	char	       *line;
	size_t		len = 0;
	int		ret;
	int	       (*match)(const char *, const char *) = NULL;
	size_t		i;
	struct stat	sb;

	if (stat(handle->pathname, &sb) < 0)
		return -1;

	/* DB has changed, close and reopen */
	if (sb.st_mtime != handle->mtime) {
		table = handle->table;
		table_db_update(handle->table);
		handle = table->t_handle;
	}

	for (i = 0; i < nitems(keycmp); ++i)
		if (keycmp[i].service == service)
			match = keycmp[i].func;

	if (match == NULL)
		line = table_db_get_entry(handle, key, &len);
	else
		line = table_db_get_entry_match(handle, key, &len, match);
	if (line == NULL)
		return 0;

	ret = 1;
	if (lk)
		ret = table_parse_lookup(service, key, line, lk);
	free(line);

	return ret;
}

static int
table_db_fetch(void *hdl, struct dict *params, enum table_service service, union lookup *lk)
{
	struct dbhandle	*handle = hdl;
	struct table	*table  = handle->table;
	DBT dbk;
	DBT dbd;
	int r;

	if (table->t_iter == NULL)
		r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST);
	else
		r = handle->db->seq(handle->db, &dbk, &dbd, R_NEXT);
	table->t_iter = handle->db;
	if (!r) {
		r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST);
		if (!r)
			return 0;
	}

	return table_parse_lookup(service, NULL, dbk.data, lk);
}


static char *
table_db_get_entry_match(void *hdl, const char *key, size_t *len,
    int(*func)(const char *, const char *))
{
	struct dbhandle	*handle = hdl;
	DBT dbk;
	DBT dbd;
	int r;
	char *buf = NULL;

	for (r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST); !r;
	     r = handle->db->seq(handle->db, &dbk, &dbd, R_NEXT)) {
		buf = xmemdup(dbk.data, dbk.size, "table_db_get_entry_cmp");
		if (func(key, buf)) {
			*len = dbk.size;
			return buf;
		}
		free(buf);
	}
	return NULL;
}

static char *
table_db_get_entry(void *hdl, const char *key, size_t *len)
{
	struct dbhandle	*handle = hdl;
	int ret;
	DBT dbk;
	DBT dbv;
	char pkey[LINE_MAX];

	/* workaround the stupidity of the DB interface */
	if (strlcpy(pkey, key, sizeof pkey) >= sizeof pkey)
		errx(1, "table_db_get_entry: key too long");
	dbk.data = pkey;
	dbk.size = strlen(pkey) + 1;

	if ((ret = handle->db->get(handle->db, &dbk, &dbv, 0)) != 0)
		return NULL;

	*len = dbv.size;

	return xmemdup(dbv.data, dbv.size, "table_db_get_entry");
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: table_db.c,v 1.9 2015/11/24 07:40:26 gilles Exp $ */
2
3			/*
4			* Copyright (c) 2011 Gilles Chehade <gilles@poolp.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/stat.h>
21			#include <sys/queue.h>
22			#include <sys/tree.h>
23			#include <sys/socket.h>
24
25			#include <netinet/in.h>
26			#include <arpa/inet.h>
27
28			#include <db.h>
29			#include <ctype.h>
30			#include <err.h>
31			#include <event.h>
32			#include <fcntl.h>
33			#include <imsg.h>
34			#include <stdio.h>
35			#include <stdlib.h>
36			#include <string.h>
37
38			#include "smtpd.h"
39			#include "log.h"
40
41
42			/* db(3) backend */
43			static int table_db_config(struct table *);
44			static int table_db_update(struct table *);
45			static void table_db_open(struct table );
46			static int table_db_lookup(void , struct dict , const char , enum table_service, union lookup );
47			static int table_db_fetch(void , struct dict , enum table_service, union lookup *);
48			static void table_db_close(void *);
49
50			static char table_db_get_entry(void , const char , size_t );
51			static char table_db_get_entry_match(void , const char , size_t ,
52			int()(const char , const char *));
53
54			struct table_backend table_backend_db = {
55			K_ALIAS\|K_CREDENTIALS\|K_DOMAIN\|K_NETADDR\|K_USERINFO\|K_SOURCE\|K_MAILADDR\|K_ADDRNAME\|K_MAILADDRMAP,
56			table_db_config,
57			table_db_open,
58			table_db_update,
59			table_db_close,
60			table_db_lookup,
61			table_db_fetch,
62			};
63
64			static struct keycmp {
65			enum table_service service;
66			int (func)(const char , const char *);
67			} keycmp[] = {
68			{ K_DOMAIN, table_domain_match },
69			{ K_NETADDR, table_netaddr_match },
70			{ K_MAILADDR, table_mailaddr_match }
71			};
72
73			struct dbhandle {
74			DB *db;
75			char pathname[PATH_MAX];
76			time_t mtime;
77			struct table *table;
78			};
79
80			static int
81			table_db_config(struct table *table)
82			{
83			struct dbhandle *handle;
84
85			handle = table_db_open(table);
86			if (handle == NULL)
87			return 0;
88
89			table_db_close(handle);
90			return 1;
91			}
92
93			static int
94			table_db_update(struct table *table)
95			{
96			struct dbhandle *handle;
97
98			handle = table_db_open(table);
99			if (handle == NULL)
100			return 0;
101
102			table_db_close(table->t_handle);
103			table->t_handle = handle;
104			return 1;
105			}
106
107			static void *
108			table_db_open(struct table *table)
109			{
110			struct dbhandle *handle;
111			struct stat sb;
112
113			handle = xcalloc(1, sizeof *handle, "table_db_open");
114			if (strlcpy(handle->pathname, table->t_config, sizeof handle->pathname)
115			>= sizeof handle->pathname)
116			goto error;
117
118			if (stat(handle->pathname, &sb) < 0)
119			goto error;
120
121			handle->mtime = sb.st_mtime;
122			handle->db = dbopen(table->t_config, O_RDONLY, 0600, DB_HASH, NULL);
123			if (handle->db == NULL)
124			goto error;
125			handle->table = table;
126
127			return handle;
128
129			error:
130			if (handle->db)
131			handle->db->close(handle->db);
132			free(handle);
133			return NULL;
134			}
135
136			static void
137			table_db_close(void *hdl)
138			{
139			struct dbhandle *handle = hdl;
140			handle->db->close(handle->db);
141			free(handle);
142			}
143
144			static int
145			table_db_lookup(void hdl, struct dict params, const char *key, enum table_service service,
146			union lookup *lk)
147			{
148			struct dbhandle *handle = hdl;
149			struct table *table = NULL;
150			char *line;
151			size_t len = 0;
152			int ret;
153			int (match)(const char , const char *) = NULL;
154			size_t i;
155			struct stat sb;
156
157			if (stat(handle->pathname, &sb) < 0)
158			return -1;
159
160			/* DB has changed, close and reopen */
161			if (sb.st_mtime != handle->mtime) {
162			table = handle->table;
163			table_db_update(handle->table);
164			handle = table->t_handle;
165			}
166
167			for (i = 0; i < nitems(keycmp); ++i)
168			if (keycmp[i].service == service)
169			match = keycmp[i].func;
170
171			if (match == NULL)
172			line = table_db_get_entry(handle, key, &len);
173			else
174			line = table_db_get_entry_match(handle, key, &len, match);
175			if (line == NULL)
176			return 0;
177
178			ret = 1;
179			if (lk)
180			ret = table_parse_lookup(service, key, line, lk);
181			free(line);
182
183			return ret;
184			}
185
186			static int
187			table_db_fetch(void hdl, struct dict params, enum table_service service, union lookup *lk)
188			{
189			struct dbhandle *handle = hdl;
190			struct table *table = handle->table;
191			DBT dbk;
192			DBT dbd;
193			int r;
194
195			if (table->t_iter == NULL)
196			r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST);
197			else
198			r = handle->db->seq(handle->db, &dbk, &dbd, R_NEXT);
199			table->t_iter = handle->db;
200			if (!r) {
201			r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST);
202			if (!r)
203			return 0;
204			}
205
206			return table_parse_lookup(service, NULL, dbk.data, lk);
207			}
208
209
210			static char *
211			table_db_get_entry_match(void hdl, const char key, size_t *len,
212			int(func)(const char , const char *))
213			{
214			struct dbhandle *handle = hdl;
215			DBT dbk;
216			DBT dbd;
217			int r;
218			char *buf = NULL;
219
220			for (r = handle->db->seq(handle->db, &dbk, &dbd, R_FIRST); !r;
221			r = handle->db->seq(handle->db, &dbk, &dbd, R_NEXT)) {
222			buf = xmemdup(dbk.data, dbk.size, "table_db_get_entry_cmp");
223			if (func(key, buf)) {
224			*len = dbk.size;
225			return buf;
226			}
227			free(buf);
228			}
229			return NULL;
230			}
231
232			static char *
233			table_db_get_entry(void hdl, const char key, size_t *len)
234			{
235			struct dbhandle *handle = hdl;
236			int ret;
237			DBT dbk;
238			DBT dbv;
239			char pkey[LINE_MAX];
240
241			/* workaround the stupidity of the DB interface */
242			if (strlcpy(pkey, key, sizeof pkey) >= sizeof pkey)
243			errx(1, "table_db_get_entry: key too long");
244			dbk.data = pkey;
245			dbk.size = strlen(pkey) + 1;
246
247			if ((ret = handle->db->get(handle->db, &dbk, &dbv, 0)) != 0)
248			return NULL;
249
250			*len = dbv.size;
251
252			return xmemdup(dbv.data, dbv.size, "table_db_get_entry");
253			}