1/*	$NetBSD: agr.c,v 1.14 2008/07/15 20:56:13 dyoung Exp $	*/
2
3/*-
4 * Copyright (c)2005 YAMAMOTO Takashi,
5 * 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 AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30#if !defined(lint)
31__RCSID("$NetBSD: agr.c,v 1.14 2008/07/15 20:56:13 dyoung Exp $");
32#endif /* !defined(lint) */
33
34#include <sys/param.h>
35#include <sys/ioctl.h>
36
37#include <net/if.h>
38#include <net/agr/if_agrioctl.h>
39
40#include <ctype.h>
41#include <err.h>
42#include <errno.h>
43#include <string.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <util.h>
47
48#include "env.h"
49#include "extern.h"
50#include "parse.h"
51#include "util.h"
52
53static int agrsetport(prop_dictionary_t, prop_dictionary_t);
54static void agr_constructor(void) __attribute__((constructor));
55static int checkifname(prop_dictionary_t);
56static void assertifname(prop_dictionary_t);
57
58static struct piface agrif = PIFACE_INITIALIZER(&agrif, "agr interface",
59    agrsetport, "agrport", &command_root.pb_parser);
60
61static const struct kwinst agrkw[] = {
62	  {.k_word = "agrport", .k_type = KW_T_INT, .k_int = AGRCMD_ADDPORT,
63	   .k_nextparser = &agrif.pif_parser}
64	, {.k_word = "-agrport", .k_type = KW_T_INT, .k_int = AGRCMD_REMPORT,
65	   .k_nextparser = &agrif.pif_parser}
66};
67
68struct pkw agr = PKW_INITIALIZER(&agr, "agr", NULL, "agrcmd",
69    agrkw, __arraycount(agrkw), NULL);
70
71static int
72checkifname(prop_dictionary_t env)
73{
74	const char *ifname;
75
76	if ((ifname = getifname(env)) == NULL)
77		return 1;
78
79	return strncmp(ifname, "agr", 3) != 0 ||
80	    !isdigit((unsigned char)ifname[3]);
81}
82
83static void
84assertifname(prop_dictionary_t env)
85{
86	if (checkifname(env))
87		errx(EXIT_FAILURE, "valid only with agr(4) interfaces");
88}
89
90int
91agrsetport(prop_dictionary_t env, prop_dictionary_t oenv)
92{
93	char buf[IFNAMSIZ];
94	struct agrreq ar;
95	const char *port;
96	int64_t cmd;
97
98	if (!prop_dictionary_get_int64(env, "agrcmd", &cmd)) {
99		warnx("%s.%d", __func__, __LINE__);
100		errno = ENOENT;
101		return -1;
102	}
103
104	if (!prop_dictionary_get_cstring_nocopy(env, "agrport", &port)) {
105		warnx("%s.%d", __func__, __LINE__);
106		errno = ENOENT;
107		return -1;
108	}
109	strlcpy(buf, port, sizeof(buf));
110
111	assertifname(env);
112	memset(&ar, 0, sizeof(ar));
113	ar.ar_version = AGRREQ_VERSION;
114	ar.ar_cmd = cmd;
115	ar.ar_buf = buf;
116	ar.ar_buflen = strlen(buf);
117
118	if (indirect_ioctl(env, SIOCSETAGR, &ar) == -1)
119		err(EXIT_FAILURE, "SIOCSETAGR");
120	return 0;
121}
122
123static void
124agr_status(prop_dictionary_t env, prop_dictionary_t oenv)
125{
126	struct agrreq ar;
127	void *buf = NULL;
128	size_t buflen = 0;
129	struct agrportlist *apl;
130	struct agrportinfo *api;
131	int i;
132
133	if (checkifname(env))
134		return;
135
136again:
137	memset(&ar, 0, sizeof(ar));
138	ar.ar_version = AGRREQ_VERSION;
139	ar.ar_cmd = AGRCMD_PORTLIST;
140	ar.ar_buf = buf;
141	ar.ar_buflen = buflen;
142
143	if (indirect_ioctl(env, SIOCGETAGR, &ar) == -1) {
144		if (errno != E2BIG) {
145			warn("SIOCGETAGR");
146			return;
147		}
148
149		free(buf);
150		buf = NULL;
151		buflen = 0;
152		goto again;
153	}
154
155	if (buf == NULL) {
156		buflen = ar.ar_buflen;
157		buf = malloc(buflen);
158		if (buf == NULL) {
159			err(EXIT_FAILURE, "agr_status");
160		}
161		goto again;
162	}
163
164	apl = buf;
165	api = (void *)(apl + 1);
166
167	for (i = 0; i < apl->apl_nports; i++) {
168		char tmp[256];
169
170		snprintb(tmp, sizeof(tmp), AGRPORTINFO_BITS, api->api_flags);
171		printf("\tagrport: %s, flags=%s\n", api->api_ifname, tmp);
172		api++;
173	}
174}
175
176static status_func_t status;
177static usage_func_t usage;
178static cmdloop_branch_t branch;
179
180static void
181agr_usage(prop_dictionary_t env)
182{
183	fprintf(stderr, "\t[ agrport i ] [ -agrport i ]\n");
184}
185
186static void
187agr_constructor(void)
188{
189	status_func_init(&status, agr_status);
190	usage_func_init(&usage, agr_usage);
191	register_status(&status);
192	register_usage(&usage);
193	cmdloop_branch_init(&branch, &agr.pk_parser);
194	register_cmdloop_branch(&branch);
195}
196