diff options
Diffstat (limited to 'usr.sbin/bluetooth/sdpd/main.c')
| -rw-r--r-- | usr.sbin/bluetooth/sdpd/main.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/usr.sbin/bluetooth/sdpd/main.c b/usr.sbin/bluetooth/sdpd/main.c new file mode 100644 index 0000000..a287b9b --- /dev/null +++ b/usr.sbin/bluetooth/sdpd/main.c @@ -0,0 +1,236 @@ +/* + * main.c + * + * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: main.c,v 1.8 2004/01/13 19:31:54 max Exp $ + * $FreeBSD$ + */ + +#include <sys/select.h> +#define L2CAP_SOCKET_CHECKED +#include <bluetooth.h> +#include <errno.h> +#include <grp.h> +#include <pwd.h> +#include <signal.h> +#include <sdp.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include "log.h" +#include "server.h" + +#include <netinet/in.h> +#include <arpa/inet.h> +#include <sys/queue.h> +#include "profile.h" +#include "provider.h" + +#define SDPD "sdpd" + +static int32_t drop_root (char const *user, char const *group); +static void sighandler (int32_t s); +static void usage (void); + +static int32_t done; + +/* + * Bluetooth Service Discovery Procotol (SDP) daemon + */ + +int +main(int argc, char *argv[]) +{ + server_t server; + char const *control = SDP_LOCAL_PATH; + char const *user = "nobody", *group = "nobody"; + int32_t detach = 1, opt; + struct sigaction sa; + + while ((opt = getopt(argc, argv, "c:dg:hu:")) != -1) { + switch (opt) { + case 'c': /* control */ + control = optarg; + break; + + case 'd': /* do not detach */ + detach = 0; + break; + + case 'g': /* group */ + group = optarg; + break; + + case 'u': /* user */ + user = optarg; + break; + + case 'h': + default: + usage(); + /* NOT REACHED */ + } + } + + log_open(SDPD, !detach); + + /* Become daemon if required */ + if (detach && daemon(0, 0) < 0) { + log_crit("Could not become daemon. %s (%d)", + strerror(errno), errno); + exit(1); + } + + /* Set signal handlers */ + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = sighandler; + + if (sigaction(SIGTERM, &sa, NULL) < 0 || + sigaction(SIGHUP, &sa, NULL) < 0 || + sigaction(SIGINT, &sa, NULL) < 0) { + log_crit("Could not install signal handlers. %s (%d)", + strerror(errno), errno); + exit(1); + } + + sa.sa_handler = SIG_IGN; + if (sigaction(SIGPIPE, &sa, NULL) < 0) { + log_crit("Could not install signal handlers. %s (%d)", + strerror(errno), errno); + exit(1); + } + + /* Initialize server */ + if (server_init(&server, control) < 0) + exit(1); + + if ((user != NULL || group != NULL) && drop_root(user, group) < 0) + exit(1); + + for (done = 0; !done; ) { + if (server_do(&server) != 0) + done ++; + } + + server_shutdown(&server); + log_close(); + + return (0); +} + +/* + * Drop root + */ + +static int32_t +drop_root(char const *user, char const *group) +{ + int uid, gid; + char *ep; + + if ((uid = getuid()) != 0) { + log_notice("Cannot set uid/gid. Not a superuser"); + return (0); /* dont do anything unless root */ + } + + gid = getgid(); + + if (user != NULL) { + uid = strtol(user, &ep, 10); + if (*ep != '\0') { + struct passwd *pwd = getpwnam(user); + + if (pwd == NULL) { + log_err("Could not find passwd entry for " \ + "user %s", user); + return (-1); + } + + uid = pwd->pw_uid; + } + } + + if (group != NULL) { + gid = strtol(group, &ep, 10); + if (*ep != '\0') { + struct group *grp = getgrnam(group); + + if (grp == NULL) { + log_err("Could not find group entry for " \ + "group %s", group); + return (-1); + } + + gid = grp->gr_gid; + } + } + + if (setgid(gid) < 0) { + log_err("Could not setgid(%s). %s (%d)", + group, strerror(errno), errno); + return (-1); + } + + if (setuid(uid) < 0) { + log_err("Could not setuid(%s). %s (%d)", + user, strerror(errno), errno); + return (-1); + } + + return (0); +} + +/* + * Signal handler + */ + +static void +sighandler(int32_t s) +{ + log_notice("Got signal %d. Total number of signals received %d", + s, ++ done); +} + +/* + * Display usage information and quit + */ + +static void +usage(void) +{ + fprintf(stderr, +"Usage: %s [options]\n" \ +"Where options are:\n" \ +" -c specify control socket name (default %s)\n" \ +" -d do not detach (run in foreground)\n" \ +" -g grp specify group\n" \ +" -h display usage and exit\n" \ +" -u usr specify user\n", + SDPD, SDP_LOCAL_PATH); + exit(255); +} + |
