summaryrefslogtreecommitdiffstats
path: root/dund/dun.c
diff options
context:
space:
mode:
Diffstat (limited to 'dund/dun.c')
-rw-r--r--dund/dun.c331
1 files changed, 0 insertions, 331 deletions
diff --git a/dund/dun.c b/dund/dun.c
deleted file mode 100644
index de437cf4..00000000
--- a/dund/dun.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- *
- * BlueZ - Bluetooth protocol stack for Linux
- *
- * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
- * 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 <ctype.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <syslog.h>
-#include <dirent.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <sys/param.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-
-#include <bluetooth/bluetooth.h>
-#include <bluetooth/rfcomm.h>
-
-#include "dund.h"
-#include "lib.h"
-
-#define PROC_BASE "/proc"
-
-static int for_each_port(int (*func)(struct rfcomm_dev_info *, unsigned long), unsigned long arg)
-{
- struct rfcomm_dev_list_req *dl;
- struct rfcomm_dev_info *di;
- long r = 0;
- int sk, i;
-
- sk = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_RFCOMM);
- if (sk < 0 ) {
- perror("Can't open RFCOMM control socket");
- exit(1);
- }
-
- dl = malloc(sizeof(*dl) + RFCOMM_MAX_DEV * sizeof(*di));
- if (!dl) {
- perror("Can't allocate request memory");
- close(sk);
- exit(1);
- }
-
- dl->dev_num = RFCOMM_MAX_DEV;
- di = dl->dev_info;
-
- if (ioctl(sk, RFCOMMGETDEVLIST, (void *) dl) < 0) {
- perror("Can't get device list");
- exit(1);
- }
-
- for (i = 0; i < dl->dev_num; i++) {
- r = func(di + i, arg);
- if (r) break;
- }
-
- close(sk);
- return r;
-}
-
-static int uses_rfcomm(char *path, char *dev)
-{
- struct dirent *de;
- DIR *dir;
-
- dir = opendir(path);
- if (!dir)
- return 0;
-
- if (chdir(path) < 0)
- return 0;
-
- while ((de = readdir(dir)) != NULL) {
- char link[PATH_MAX + 1];
- int len = readlink(de->d_name, link, sizeof(link));
- if (len > 0) {
- link[len] = 0;
- if (strstr(link, dev))
- return 1;
- }
- }
-
- closedir(dir);
-
- return 0;
-}
-
-static int find_pppd(int id, pid_t *pid)
-{
- struct dirent *de;
- char path[PATH_MAX + 1];
- char dev[10];
- int empty = 1;
- DIR *dir;
-
- dir = opendir(PROC_BASE);
- if (!dir) {
- perror(PROC_BASE);
- return -1;
- }
-
- sprintf(dev, "rfcomm%d", id);
-
- *pid = 0;
- while ((de = readdir(dir)) != NULL) {
- empty = 0;
- if (isdigit(de->d_name[0])) {
- sprintf(path, "%s/%s/fd", PROC_BASE, de->d_name);
- if (uses_rfcomm(path, dev)) {
- *pid = atoi(de->d_name);
- break;
- }
- }
- }
- closedir(dir);
-
- if (empty)
- fprintf(stderr, "%s is empty (not mounted ?)\n", PROC_BASE);
-
- return *pid != 0;
-}
-
-static int dun_exec(char *tty, char *prog, char **args)
-{
- int pid = fork();
- int fd;
-
- switch (pid) {
- case -1:
- return -1;
-
- case 0:
- break;
-
- default:
- return pid;
- }
-
- setsid();
-
- /* Close all FDs */
- for (fd = 3; fd < 20; fd++)
- close(fd);
-
- execvp(prog, args);
-
- syslog(LOG_ERR, "Error while executing %s", prog);
-
- exit(1);
-}
-
-static int dun_create_tty(int sk, char *tty, int size)
-{
- struct sockaddr_rc sa;
- struct stat st;
- socklen_t alen;
- int id, try = 30;
-
- struct rfcomm_dev_req req = {
- flags: (1 << RFCOMM_REUSE_DLC) | (1 << RFCOMM_RELEASE_ONHUP),
- dev_id: -1
- };
-
- alen = sizeof(sa);
- if (getpeername(sk, (struct sockaddr *) &sa, &alen) < 0)
- return -1;
- bacpy(&req.dst, &sa.rc_bdaddr);
-
- alen = sizeof(sa);
- if (getsockname(sk, (struct sockaddr *) &sa, &alen) < 0)
- return -1;
- bacpy(&req.src, &sa.rc_bdaddr);
- req.channel = sa.rc_channel;
-
- id = ioctl(sk, RFCOMMCREATEDEV, &req);
- if (id < 0)
- return id;
-
- snprintf(tty, size, "/dev/rfcomm%d", id);
- while (stat(tty, &st) < 0) {
- snprintf(tty, size, "/dev/bluetooth/rfcomm/%d", id);
- if (stat(tty, &st) < 0) {
- snprintf(tty, size, "/dev/rfcomm%d", id);
- if (try--) {
- usleep(100 * 1000);
- continue;
- }
-
- memset(&req, 0, sizeof(req));
- req.dev_id = id;
- ioctl(sk, RFCOMMRELEASEDEV, &req);
-
- return -1;
- }
- }
-
- return id;
-}
-
-int dun_init(void)
-{
- return 0;
-}
-
-int dun_cleanup(void)
-{
- return 0;
-}
-
-static int show_conn(struct rfcomm_dev_info *di, unsigned long arg)
-{
- pid_t pid;
-
- if (di->state == BT_CONNECTED &&
- (di->flags & (1<<RFCOMM_REUSE_DLC)) &&
- (di->flags & (1<<RFCOMM_TTY_ATTACHED)) &&
- (di->flags & (1<<RFCOMM_RELEASE_ONHUP))) {
-
- if (find_pppd(di->id, &pid)) {
- char dst[18];
- ba2str(&di->dst, dst);
-
- printf("rfcomm%d: %s channel %d pppd pid %d\n",
- di->id, dst, di->channel, pid);
- }
- }
- return 0;
-}
-
-static int kill_conn(struct rfcomm_dev_info *di, unsigned long arg)
-{
- bdaddr_t *dst = (bdaddr_t *) arg;
- pid_t pid;
-
- if (di->state == BT_CONNECTED &&
- (di->flags & (1<<RFCOMM_REUSE_DLC)) &&
- (di->flags & (1<<RFCOMM_TTY_ATTACHED)) &&
- (di->flags & (1<<RFCOMM_RELEASE_ONHUP))) {
-
- if (dst && bacmp(&di->dst, dst))
- return 0;
-
- if (find_pppd(di->id, &pid)) {
- if (kill(pid, SIGINT) < 0)
- perror("Kill");
-
- if (!dst)
- return 0;
- return 1;
- }
- }
- return 0;
-}
-
-int dun_show_connections(void)
-{
- for_each_port(show_conn, 0);
- return 0;
-}
-
-int dun_kill_connection(uint8_t *dst)
-{
- for_each_port(kill_conn, (unsigned long) dst);
- return 0;
-}
-
-int dun_kill_all_connections(void)
-{
- for_each_port(kill_conn, 0);
- return 0;
-}
-
-int dun_open_connection(int sk, char *pppd, char **args, int wait)
-{
- char tty[100];
- int pid;
-
- if (dun_create_tty(sk, tty, sizeof(tty) - 1) < 0) {
- syslog(LOG_ERR, "RFCOMM TTY creation failed. %s(%d)", strerror(errno), errno);
- return -1;
- }
-
- args[0] = "pppd";
- args[1] = tty;
- args[2] = "nodetach";
-
- pid = dun_exec(tty, pppd, args);
- if (pid < 0) {
- syslog(LOG_ERR, "Exec failed. %s(%d)", strerror(errno), errno);
- return -1;
- }
-
- if (wait) {
- int status;
- waitpid(pid, &status, 0);
- /* FIXME: Check for waitpid errors */
- }
-
- return 0;
-}
generated by cgit (git 2.34.1) at 2025-07-26 04:36:53 +0000