Import sdpd(8) sources. This is Bluetooth Service Discovery Protocol daemon.

Extend libsdp(3) API to allow service registration and removal.
Fix uninitialized variable bug in sdpcontrol(8).

Reviewed by: imp (mentor)
No objection: ru

1 files changed, 235 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..1df3bf0
--- /dev/null
+++ b/usr.sbin/bluetooth/sdpd/main.c
@@ -0,0 +1,235 @@
+/*
+ * 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>
+#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);
+}
+