several updates to allow compilation on FreeBSD

NEWS

@@ -1,3 +1,8 @@
+* Version 0.1.2 (unreleased)
+
+- Several updates to allow compilation in FreeBSD.
+
+
 * Version 0.1.1 (released 2013-04-03)
 
 - MTU discovery was simplified.

src/Makefile.am

@@ -18,7 +18,7 @@ ocserv_SOURCES = main.c main-auth.c worker-vpn.c worker-auth.c tlslib.c \
 	config.c pam.c pam.h worker-resume.c worker.h main-resume.c main.h \
 	main-user.c cookies-gdbm.c cookies-hash.c worker-misc.c setproctitle.h \
 	setproctitle.c worker-privs.c plain.c plain.h common.h common.c \
-	sec-mod.c sec-mod.h script-list.h \
+	sec-mod.c sec-mod.h script-list.h die.c die.h \
 	$(CCAN_SOURCES)
 
 ocserv_SOURCES += ocserv-args.def ocserv-args.c ocserv-args.h

src/cookies-gdbm.c

@@ -30,7 +30,6 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <limits.h>
-#include <gdbm.h>
 #include <sys/stat.h>
 #include "setproctitle.h"
 #include <main.h>
@@ -38,6 +37,8 @@
 
 #ifdef HAVE_GDBM
 
+# include <gdbm.h>
+
 /* Note that it receives allocated data and stores them. Do not
  * free the sc.
  */

src/cookies.c

@@ -30,7 +30,6 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <limits.h>
-#include <gdbm.h>
 #include <sys/stat.h>
 
 #include <main.h>

src/die.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2013 Nikos Mavrogiannopoulos
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <config.h>
+
+#include <unistd.h>
+#ifdef __linux__
+# include <sys/prctl.h>
+#endif
+
+void kill_on_parent_kill(int sig)
+{
+#ifdef __linux__
+	prctl(PR_SET_PDEATHSIG, sig);
+#endif
+}

src/die.h

@@ -0,0 +1,6 @@
+#ifndef DIE_H
+# define DIE_H
+
+void kill_on_parent_kill(int sig);
+
+#endif

src/main-misc.c

@@ -35,7 +35,7 @@
 #include <gnutls/crypto.h>
 #include <tlslib.h>
 #include <sys/un.h>
-#include <sys/prctl.h>
+#include "die.h"
 #include <cloexec.h>
 #include "ipc.h"
 #include "setproctitle.h"
@@ -397,7 +397,7 @@ const char *p;
 	pid = fork();
 	if (pid == 0) { /* child */
 		clear_lists(s);
-		prctl(PR_SET_PDEATHSIG, SIGTERM);
+		kill_on_parent_kill(SIGTERM);
 		setproctitle(PACKAGE_NAME"-secmod");
 
 		sec_mod_server(s->config, p);

src/main-user.c

@@ -134,10 +134,12 @@ add_utmp_entry(main_server_st *s, struct proc_st* proc)
 	entry.ut_pid = proc->pid;
 	snprintf(entry.ut_line, sizeof(entry.ut_line), "%s", proc->lease->name);
 	snprintf(entry.ut_user, sizeof(entry.ut_user), "%s", proc->username);
+#ifdef __linux__
 	if (proc->remote_addr_len == sizeof(struct sockaddr_in))
 		memcpy(entry.ut_addr_v6, SA_IN_P(&proc->remote_addr), sizeof(struct in_addr));
 	else
 		memcpy(entry.ut_addr_v6, SA_IN6_P(&proc->remote_addr), sizeof(struct in6_addr));
+#endif
 
 	gettime(&tv);
 	entry.ut_tv.tv_sec = tv.tv_sec;

src/main.c

@@ -32,13 +32,13 @@
 #include <errno.h>
 #include <sys/ioctl.h>
 #include <sys/resource.h>
-#include <sys/prctl.h>
 #include <cloexec.h>
 #include <script-list.h>
 
 #include <gnutls/x509.h>
 #include <tlslib.h>
 #include "ipc.h"
+#include "die.h"
 #include "setproctitle.h"
 #ifdef HAVE_LIBWRAP
 # include <tcpd.h>
@@ -122,7 +122,7 @@ int _listen_ports(struct cfg_st* config, struct addrinfo *res, struct listen_lis
 		if (ptr->ai_socktype == SOCK_DGRAM) {
 #if defined(IP_DONTFRAG)
 			y = 1;
-			if (setsockopt(s, IPPROTO_IP, IP_DONTFRAG,
+			if (setsockopt(s, SOL_IP, IP_DONTFRAG,
 				       (const void *) &y, sizeof(y)) < 0)
 				perror("setsockopt(IP_DF) failed");
 #elif defined(IP_MTU_DISCOVER)
@@ -801,7 +801,7 @@ int main(int argc, char** argv)
 					erase_cookies(&s);
 
 					setproctitle(PACKAGE_NAME"-worker");
-					prctl(PR_SET_PDEATHSIG, SIGTERM);
+					kill_on_parent_kill(SIGTERM);
 
 					ws.config = &config;
 					ws.cmd_fd = cmd_fd[1];

src/pam.c

@@ -18,6 +18,7 @@
 
 #include <config.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <syslog.h>
 

src/setproctitle.c

@@ -19,6 +19,9 @@
 #include <config.h>
 #include <stdarg.h>
 #include <stdio.h>
+#if !defined(HAVE_SETPROCTITLE)
+
+# if defined(__linux__)
 #  include <sys/prctl.h>
 
 /* This sets the proccess title as shown in top, but not in ps (*@#%@).
@@ -38,3 +41,13 @@ void setproctitle (const char *fmt, ...)
 	prctl (PR_SET_NAME, name);
 #  endif
 }
+# else /* not linux */
+
+void setproctitle (const char *fmt, ...)
+{
+
+}
+
+# endif /* __linux__ */
+
+#endif /* HAVE_SETPROCTITLE */

src/setproctitle.h

@@ -1,7 +1,18 @@
 #ifndef SETPROCTITLE_H
 # define SETPROCTITLE_H
 
+# include <config.h>
+
+# ifndef HAVE_SETPROCTILE
+
 void __attribute__ ((format(printf, 1, 2)))
 setproctitle(const char *fmt, ...);
 
+# else
+
+#  include <sys/types.h>
+#  include <unistd.h>
+
+# endif
+
 #endif

src/tun.c

@@ -22,7 +22,6 @@
 #include <sys/types.h>
 #include <arpa/inet.h>
 #include <sys/socket.h>
-#include <linux/if_tun.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <stdio.h>
@@ -31,6 +30,12 @@
 #include <errno.h>
 #include <cloexec.h>
 
+#ifdef __linux__
+# include <linux/if_tun.h>
+#else
+# include <net/if_tun.h>
+#endif
+
 #include <netdb.h>
 
 #include <vpn.h>
@@ -347,6 +352,7 @@ int open_tun(main_server_st* s, struct lease_st** l)
 
 	/* No need to free the lease after this point.
 	 */
+#ifdef __linux__
 	tunfd = open("/dev/net/tun", O_RDWR);
 	if (tunfd < 0) {
 		int e = errno;
@@ -399,6 +405,17 @@ int open_tun(main_server_st* s, struct lease_st** l)
 		}
 	}
 # endif
+#else /* freebsd */
+	tunfd = open("/dev/tun", O_RDWR);
+	if (tunfd < 0) {
+		int e = errno;
+		mslog(s, NULL, LOG_ERR, "Can't open /dev/tun: %s\n",
+		       strerror(e));
+		return -1;
+	}
+	
+	set_cloexec_flag (tunfd, 1);
+#endif
 
 	/* set IP/mask */
 	ret = set_network_info(s, lease);

src/vpn.h

@@ -10,6 +10,7 @@
 #include <sys/socket.h>
 #include <unistd.h>
 #include <net/if.h>
+#include <netinet/in.h>
 #include <minmax.h>
 
 #define AC_PKT_DATA             0	/* Uncompressed data */