3 * BlueZ - Bluetooth protocol stack for Linux
5 * Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
37 #include <sys/ioctl.h>
38 #include <sys/socket.h>
40 #include <bluetooth/bluetooth.h>
41 #include <bluetooth/rfcomm.h>
44 static volatile sig_atomic_t __io_canceled;
46 static inline void io_init(void)
51 static inline void io_cancel(void)
56 /* Signal functions */
57 static void sig_hup(int sig)
62 static void sig_term(int sig)
64 syslog(LOG_INFO, "Closing RFCOMM channel");
68 /* Read exactly len bytes (Signal safe)*/
69 static inline int read_n(int fd, char *buf, int len)
71 register int t = 0, w;
73 while (!__io_canceled && len > 0) {
74 if ((w = read(fd, buf, len)) < 0) {
75 if (errno == EINTR || errno == EAGAIN)
89 /* Write exactly len bytes (Signal safe)*/
90 static inline int write_n(int fd, char *buf, int len)
92 register int t = 0, w;
94 while (!__io_canceled && len > 0) {
95 if ((w = write(fd, buf, len)) < 0) {
96 if (errno == EINTR || errno == EAGAIN)
110 /* Create the RFCOMM connection */
111 static int create_connection(bdaddr_t *bdaddr, uint8_t channel)
113 struct sockaddr_rc remote_addr, local_addr;
116 if ((fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0)
119 memset(&local_addr, 0, sizeof(local_addr));
120 local_addr.rc_family = AF_BLUETOOTH;
121 bacpy(&local_addr.rc_bdaddr, BDADDR_ANY);
122 if ((err = bind(fd, (struct sockaddr *)&local_addr, sizeof(local_addr))) < 0) {
127 memset(&remote_addr, 0, sizeof(remote_addr));
128 remote_addr.rc_family = AF_BLUETOOTH;
129 bacpy(&remote_addr.rc_bdaddr, bdaddr);
130 remote_addr.rc_channel = channel;
131 if ((err = connect(fd, (struct sockaddr *)&remote_addr, sizeof(remote_addr))) < 0) {
136 syslog(LOG_INFO, "RFCOMM channel %d connected", channel);
141 /* Process the data from socket and pseudo tty */
142 static int process_data(int fd)
149 p[0].events = POLLIN | POLLERR | POLLHUP | POLLNVAL;
152 p[1].events = POLLIN | POLLERR | POLLHUP | POLLNVAL;
156 while (!__io_canceled) {
160 err = poll(p, 2, -1);
167 if (p[0].revents & (POLLERR | POLLHUP | POLLNVAL))
169 r = read(0, buf, sizeof(buf));
171 if (errno != EINTR && errno != EAGAIN) {
177 err = write_n(fd, buf, r);
183 if (p[1].revents & (POLLERR | POLLHUP | POLLNVAL))
185 r = read(fd, buf, sizeof(buf));
187 if (errno != EINTR && errno != EAGAIN) {
193 err = write_n(1, buf, r);
202 static void usage(void)
204 printf("Usage:\tppporc <bdaddr> [channel]\n");
207 int main(int argc, char** argv)
215 /* Parse command line options */
216 while ((opt = getopt(argc, argv, "h")) != EOF) {
229 str2ba(argv[0], &bdaddr);
233 str2ba(argv[0], &bdaddr);
234 channel = atoi(argv[1]);
241 /* Initialize syslog */
242 openlog("ppporc", LOG_PID | LOG_NDELAY | LOG_PERROR, LOG_DAEMON);
243 syslog(LOG_INFO, "PPP over RFCOMM");
245 /* Initialize signals */
246 memset(&sa, 0, sizeof(sa));
247 sa.sa_flags = SA_NOCLDSTOP;
248 sa.sa_handler = SIG_IGN;
249 sigaction(SIGCHLD, &sa, NULL);
250 sigaction(SIGPIPE, &sa, NULL);
252 sa.sa_handler = sig_term;
253 sigaction(SIGTERM, &sa, NULL);
254 sigaction(SIGINT, &sa, NULL);
256 sa.sa_handler = sig_hup;
257 sigaction(SIGHUP, &sa, NULL);
259 syslog(LOG_INFO, "Connecting to %s", argv[0]);
261 if ((fd = create_connection(&bdaddr, channel)) < 0) {
262 syslog(LOG_ERR, "Can't connect to remote device (%s)", strerror(errno));
266 err = process_data(fd);