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[FreeBSD/releng/9.2.git] / usr.sbin / bluetooth / l2control / l2control.c
1 /*
2  * l2control.c
3  *
4  * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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  * $Id: l2control.c,v 1.6 2003/09/05 00:38:25 max Exp $
29  * $FreeBSD$
30  */
31
32 #include <assert.h>
33 #include <bluetooth.h>
34 #include <err.h>
35 #include <errno.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40 #include "l2control.h"
41
42 /* Prototypes */
43 static int                    do_l2cap_command    (bdaddr_p, int, char **);
44 static struct l2cap_command * find_l2cap_command  (char const *, 
45                                                    struct l2cap_command *);
46 static void                   print_l2cap_command (struct l2cap_command *);
47 static void                   usage               (void);
48
49 /* Main */
50
51 int     numeric_bdaddr = 0;
52
53 int
54 main(int argc, char *argv[])
55 {
56         int             n;
57         bdaddr_t        bdaddr;
58
59         memset(&bdaddr, 0, sizeof(bdaddr));
60
61         /* Process command line arguments */
62         while ((n = getopt(argc, argv, "a:nh")) != -1) {
63                 switch (n) {
64                 case 'a':
65                         if (!bt_aton(optarg, &bdaddr)) {
66                                 struct hostent  *he = NULL;
67
68                                 if ((he = bt_gethostbyname(optarg)) == NULL)
69                                         errx(1, "%s: %s", optarg, hstrerror(h_errno));
70
71                                 memcpy(&bdaddr, he->h_addr, sizeof(bdaddr));
72                         }
73                         break;
74
75                 case 'n':
76                         numeric_bdaddr = 1;
77                         break;
78
79                 case 'h':
80                 default:
81                         usage();
82                         break;
83                 }
84         }
85
86         argc -= optind;
87         argv += optind;
88
89         if (*argv == NULL)
90                 usage();
91
92         return (do_l2cap_command(&bdaddr, argc, argv));
93 } /* main */
94
95 /* Execute commands */
96 static int
97 do_l2cap_command(bdaddr_p bdaddr, int argc, char **argv)
98 {
99         char                    *cmd = argv[0];
100         struct l2cap_command    *c = NULL;
101         struct sockaddr_l2cap    sa;
102         int                      s, e, help;
103
104         help = 0;
105         if (strcasecmp(cmd, "help") == 0) {
106                 argc --;
107                 argv ++;
108
109                 if (argc <= 0) {
110                         fprintf(stdout, "Supported commands:\n");
111                         print_l2cap_command(l2cap_commands);
112                         fprintf(stdout, "\nFor more information use " \
113                                 "'help command'\n");
114
115                         return (OK);
116                 }
117
118                 help = 1;
119                 cmd = argv[0];
120         }
121
122         c = find_l2cap_command(cmd, l2cap_commands);
123         if (c == NULL) {
124                 fprintf(stdout, "Unknown command: \"%s\"\n", cmd);
125                 return (ERROR);
126         }
127
128         if (!help) {
129                 if (memcmp(bdaddr, NG_HCI_BDADDR_ANY, sizeof(*bdaddr)) == 0)
130                         usage();
131
132                 memset(&sa, 0, sizeof(sa));
133                 sa.l2cap_len = sizeof(sa);
134                 sa.l2cap_family = AF_BLUETOOTH;
135                 memcpy(&sa.l2cap_bdaddr, bdaddr, sizeof(sa.l2cap_bdaddr));
136
137                 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP);
138                 if (s < 0)
139                         err(1, "Could not create socket");
140         
141                 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
142                         err(2,
143 "Could not bind socket, bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));
144
145                 e = 0x0ffff;
146                 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &e, sizeof(e)) < 0)
147                         err(3, "Coult not setsockopt(RCVBUF, %d)", e);
148
149                 e = (c->handler)(s, -- argc, ++ argv);
150
151                 close(s);
152         } else
153                 e = USAGE;
154
155         switch (e) {
156         case OK:
157         case FAILED:
158                 break;
159
160         case ERROR:
161                 fprintf(stdout, "Could not execute command \"%s\". %s\n",
162                         cmd, strerror(errno));
163                 break;
164
165         case USAGE:
166                 fprintf(stdout, "Usage: %s\n%s\n", c->command, c->description);
167                 break;
168
169         default: assert(0); break;
170         }
171
172         return (e);
173 } /* do_l2cap_command */
174
175 /* Try to find command in specified category */
176 static struct l2cap_command *
177 find_l2cap_command(char const *command, struct l2cap_command *category)
178 {
179         struct l2cap_command    *c = NULL;
180
181         for (c = category; c->command != NULL; c++) {
182                 char    *c_end = strchr(c->command, ' ');
183
184                 if (c_end != NULL) {
185                         int     len = c_end - c->command;
186
187                         if (strncasecmp(command, c->command, len) == 0)
188                                 return (c);
189                 } else if (strcasecmp(command, c->command) == 0)
190                                 return (c);
191         }
192
193         return (NULL);
194 } /* find_l2cap_command */
195
196 /* Print commands in specified category */
197 static void
198 print_l2cap_command(struct l2cap_command *category)
199 {
200         struct l2cap_command    *c = NULL;
201
202         for (c = category; c->command != NULL; c++)
203                 fprintf(stdout, "\t%s\n", c->command);
204 } /* print_l2cap_command */
205
206 /* Usage */
207 static void
208 usage(void)
209 {
210         fprintf(stderr, "Usage: l2control [-hn] -a local cmd [params ..]\n");
211         fprintf(stderr, "Where:\n");
212         fprintf(stderr, "  -a local   Specify local device to connect to\n");
213         fprintf(stderr, "  -h         Display this message\n");
214         fprintf(stderr, "  -n         Show addresses as numbers\n");
215         fprintf(stderr, "  cmd        Supported command " \
216                 "(see l2control help)\n");
217         fprintf(stderr, "  params     Optional command parameters\n");
218         exit(255);
219 } /* usage */
220