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-rw-r--r--tools/ppporc.c273
1 files changed, 273 insertions, 0 deletions
diff --git a/tools/ppporc.c b/tools/ppporc.c
new file mode 100644
index 00000000..2d8b034d
--- /dev/null
+++ b/tools/ppporc.c
@@ -0,0 +1,273 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2002-2008 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <syslog.h>
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/rfcomm.h>
+
+extern int optind, opterr, optopt;
+extern char *optarg;
+
+/* IO cancelation */
+static volatile sig_atomic_t __io_canceled;
+
+static inline void io_init(void)
+{
+ __io_canceled = 0;
+}
+
+static inline void io_cancel(void)
+{
+ __io_canceled = 1;
+}
+
+/* Signal functions */
+static void sig_hup(int sig)
+{
+ return;
+}
+
+static void sig_term(int sig)
+{
+ syslog(LOG_INFO, "Closing RFCOMM channel");
+ io_cancel();
+}
+
+/* Read exactly len bytes (Signal safe)*/
+static inline int read_n(int fd, char *buf, int len)
+{
+ register int t = 0, w;
+
+ while (!__io_canceled && len > 0) {
+ if ((w = read(fd, buf, len)) < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ return -1;
+ }
+ if (!w)
+ return 0;
+ len -= w;
+ buf += w;
+ t += w;
+ }
+
+ return t;
+}
+
+/* Write exactly len bytes (Signal safe)*/
+static inline int write_n(int fd, char *buf, int len)
+{
+ register int t = 0, w;
+
+ while (!__io_canceled && len > 0) {
+ if ((w = write(fd, buf, len)) < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ return -1;
+ }
+ if (!w)
+ return 0;
+ len -= w;
+ buf += w;
+ t += w;
+ }
+
+ return t;
+}
+
+/* Create the RFCOMM connection */
+static int create_connection(bdaddr_t *bdaddr, uint8_t channel)
+{
+ struct sockaddr_rc remote_addr, local_addr;
+ int fd, err;
+
+ if ((fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0)
+ return fd;
+
+ memset(&local_addr, 0, sizeof(local_addr));
+ local_addr.rc_family = AF_BLUETOOTH;
+ bacpy(&local_addr.rc_bdaddr, BDADDR_ANY);
+ if ((err = bind(fd, (struct sockaddr *)&local_addr, sizeof(local_addr))) < 0) {
+ close(fd);
+ return err;
+ }
+
+ memset(&remote_addr, 0, sizeof(remote_addr));
+ remote_addr.rc_family = AF_BLUETOOTH;
+ bacpy(&remote_addr.rc_bdaddr, bdaddr);
+ remote_addr.rc_channel = channel;
+ if ((err = connect(fd, (struct sockaddr *)&remote_addr, sizeof(remote_addr))) < 0) {
+ close(fd);
+ return err;
+ }
+
+ syslog(LOG_INFO, "RFCOMM channel %d connected", channel);
+
+ return fd;
+}
+
+/* Process the data from socket and pseudo tty */
+static int process_data(int fd)
+{
+ struct pollfd p[2];
+ char buf[1024];
+ int err, r;
+
+ p[0].fd = 0;
+ p[0].events = POLLIN | POLLERR | POLLHUP | POLLNVAL;
+
+ p[1].fd = fd;
+ p[1].events = POLLIN | POLLERR | POLLHUP | POLLNVAL;
+
+ err = 0;
+
+ while (!__io_canceled) {
+ p[0].revents = 0;
+ p[1].revents = 0;
+
+ err = poll(p, 2, -1);
+ if (err < 0)
+ break;
+
+ err = 0;
+
+ if (p[0].revents) {
+ if (p[0].revents & (POLLERR | POLLHUP | POLLNVAL))
+ break;
+ r = read(0, buf, sizeof(buf));
+ if (r < 0) {
+ if (errno != EINTR && errno != EAGAIN) {
+ err = r;
+ break;
+ }
+ }
+
+ err = write_n(fd, buf, r);
+ if (err < 0)
+ break;
+ }
+
+ if (p[1].revents) {
+ if (p[1].revents & (POLLERR | POLLHUP | POLLNVAL))
+ break;
+ r = read(fd, buf, sizeof(buf));
+ if (r < 0) {
+ if (errno != EINTR && errno != EAGAIN) {
+ err = r;
+ break;
+ }
+ }
+
+ err = write_n(1, buf, r);
+ if (err < 0)
+ break;
+ }
+ }
+
+ return err;
+}
+
+static void usage(void)
+{
+ printf("Usage:\tppporc <bdaddr> [channel]\n");
+}
+
+int main(int argc, char** argv)
+{
+ struct sigaction sa;
+ int fd, err, opt;
+
+ bdaddr_t bdaddr;
+ uint8_t channel;
+
+ /* Parse command line options */
+ while ((opt = getopt(argc, argv, "h")) != EOF) {
+ switch(opt) {
+ case 'h':
+ usage();
+ exit(0);
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ switch (argc) {
+ case 1:
+ str2ba(argv[0], &bdaddr);
+ channel = 1;
+ break;
+ case 2:
+ str2ba(argv[0], &bdaddr);
+ channel = atoi(argv[1]);
+ break;
+ default:
+ usage();
+ exit(0);
+ }
+
+ /* Initialize syslog */
+ openlog("ppporc", LOG_PID | LOG_NDELAY | LOG_PERROR, LOG_DAEMON);
+ syslog(LOG_INFO, "PPP over RFCOMM");
+
+ /* Initialize signals */
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_flags = SA_NOCLDSTOP;
+ sa.sa_handler = SIG_IGN;
+ sigaction(SIGCHLD, &sa, NULL);
+ sigaction(SIGPIPE, &sa, NULL);
+
+ sa.sa_handler = sig_term;
+ sigaction(SIGTERM, &sa, NULL);
+ sigaction(SIGINT, &sa, NULL);
+
+ sa.sa_handler = sig_hup;
+ sigaction(SIGHUP, &sa, NULL);
+
+ syslog(LOG_INFO, "Connecting to %s", argv[0]);
+
+ if ((fd = create_connection(&bdaddr, channel)) < 0) {
+ syslog(LOG_ERR, "Can't connect to remote device (%s)", strerror(errno));
+ return fd;
+ }
+
+ err = process_data(fd);
+
+ close(fd);
+
+ return err;
+}