From: Guus Sliepen <guus@tinc-vpn.org>
Date: Tue, 22 Jul 2003 20:55:21 +0000 (+0000)
Subject: Use bools and enums where appropriate.
X-Git-Tag: release-1.0~45
X-Git-Url: https://tinc-vpn.org/git/browse?a=commitdiff_plain;h=eefa28059ab989c915a7d95fb4ae728abd7ce713;p=tinc

Use bools and enums where appropriate.
---

diff --git a/src/conf.c b/src/conf.c
index f5211521..d34a087c 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -19,7 +19,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: conf.c,v 1.9.4.67 2003/07/18 14:10:27 guus Exp $
+    $Id: conf.c,v 1.9.4.68 2003/07/22 20:55:19 guus Exp $
 */
 
 #include "system.h"
@@ -141,109 +141,109 @@ config_t *lookup_config_next(avl_tree_t *config_tree, config_t *cfg)
 	return NULL;
 }
 
-int get_config_bool(config_t *cfg, int *result)
+bool get_config_bool(config_t *cfg, bool *result)
 {
 	cp();
 
 	if(!cfg)
-		return 0;
+		return false;
 
 	if(!strcasecmp(cfg->value, "yes")) {
-		*result = 1;
-		return 1;
+		*result = true;
+		return true;
 	} else if(!strcasecmp(cfg->value, "no")) {
-		*result = 0;
-		return 1;
+		*result = false;
+		return true;
 	}
 
 	logger(LOG_ERR, _("\"yes\" or \"no\" expected for configuration variable %s in %s line %d"),
 		   cfg->variable, cfg->file, cfg->line);
 
-	return 0;
+	return false;
 }
 
-int get_config_int(config_t *cfg, int *result)
+bool get_config_int(config_t *cfg, int *result)
 {
 	cp();
 
 	if(!cfg)
-		return 0;
+		return false;
 
 	if(sscanf(cfg->value, "%d", result) == 1)
-		return 1;
+		return true;
 
 	logger(LOG_ERR, _("Integer expected for configuration variable %s in %s line %d"),
 		   cfg->variable, cfg->file, cfg->line);
 
-	return 0;
+	return false;
 }
 
-int get_config_string(config_t *cfg, char **result)
+bool get_config_string(config_t *cfg, char **result)
 {
 	cp();
 
 	if(!cfg)
-		return 0;
+		return false;
 
 	*result = xstrdup(cfg->value);
 
-	return 1;
+	return true;
 }
 
-int get_config_address(config_t *cfg, struct addrinfo **result)
+bool get_config_address(config_t *cfg, struct addrinfo **result)
 {
 	struct addrinfo *ai;
 
 	cp();
 
 	if(!cfg)
-		return 0;
+		return false;
 
 	ai = str2addrinfo(cfg->value, NULL, 0);
 
 	if(ai) {
 		*result = ai;
-		return 1;
+		return true;
 	}
 
 	logger(LOG_ERR, _("Hostname or IP address expected for configuration variable %s in %s line %d"),
 		   cfg->variable, cfg->file, cfg->line);
 
-	return 0;
+	return false;
 }
 
-int get_config_subnet(config_t *cfg, subnet_t ** result)
+bool get_config_subnet(config_t *cfg, subnet_t ** result)
 {
 	subnet_t *subnet;
 
 	cp();
 
 	if(!cfg)
-		return 0;
+		return false;
 
 	subnet = str2net(cfg->value);
 
 	if(!subnet) {
 		logger(LOG_ERR, _("Subnet expected for configuration variable %s in %s line %d"),
 			   cfg->variable, cfg->file, cfg->line);
-		return 0;
+		return false;
 	}
 
 	/* Teach newbies what subnets are... */
 
 	if(((subnet->type == SUBNET_IPV4)
-		&& maskcheck(&subnet->net.ipv4.address, subnet->net.ipv4.prefixlength, sizeof(ipv4_t)))
+		&& !maskcheck(&subnet->net.ipv4.address, subnet->net.ipv4.prefixlength, sizeof(ipv4_t)))
 		|| ((subnet->type == SUBNET_IPV6)
-		&& maskcheck(&subnet->net.ipv6.address, subnet->net.ipv6.prefixlength, sizeof(ipv6_t)))) {
+		&& !maskcheck(&subnet->net.ipv6.address, subnet->net.ipv6.prefixlength, sizeof(ipv6_t)))) {
 		logger(LOG_ERR, _ ("Network address and prefix length do not match for configuration variable %s in %s line %d"),
 			   cfg->variable, cfg->file, cfg->line);
 		free(subnet);
-		return 0;
+		return false;
 	}
 
 	*result = subnet;
 
-	return 1;
+	return true;
 }
 
 /*
@@ -325,7 +325,8 @@ int read_config_file(avl_tree_t *config_tree, const char *fname)
 	FILE *fp;
 	char *buffer, *line;
 	char *variable, *value;
-	int lineno = 0, ignore = 0;
+	int lineno = 0;
+	bool ignore = false;
 	config_t *cfg;
 	size_t bufsize;
 
@@ -366,7 +367,7 @@ int read_config_file(avl_tree_t *config_tree, const char *fname)
 			continue;			/* comment: ignore */
 
 		if(!strcmp(variable, "-----BEGIN"))
-			ignore = 1;
+			ignore = true;
 
 		if(!ignore) {
 			value = strtok(NULL, "\t\n\r =");
@@ -387,7 +388,7 @@ int read_config_file(avl_tree_t *config_tree, const char *fname)
 		}
 
 		if(!strcmp(variable, "-----END"))
-			ignore = 0;
+			ignore = false;
 	}
 
 	free(buffer);
@@ -396,7 +397,7 @@ int read_config_file(avl_tree_t *config_tree, const char *fname)
 	return err;
 }
 
-int read_server_config()
+bool read_server_config()
 {
 	char *fname;
 	int x;
@@ -412,10 +413,10 @@ int read_server_config()
 
 	free(fname);
 
-	return x;
+	return x == 0;
 }
 
-int is_safe_path(const char *file)
+bool is_safe_path(const char *file)
 {
 #if !(defined(HAVE_CYGWIN) || defined(HAVE_MINGW))
 	char *p;
@@ -426,7 +427,7 @@ int is_safe_path(const char *file)
 
 	if(*file != '/') {
 		logger(LOG_ERR, _("`%s' is not an absolute path"), file);
-		return 0;
+		return false;
 	}
 
 	p = strrchr(file, '/');
@@ -442,13 +443,13 @@ int is_safe_path(const char *file)
 check1:
 	if(lstat(f, &s) < 0) {
 		logger(LOG_ERR, _("Couldn't stat `%s': %s"), f, strerror(errno));
-		return 0;
+		return false;
 	}
 
 	if(s.st_uid != geteuid()) {
 		logger(LOG_ERR, _("`%s' is owned by UID %d instead of %d"),
 			   f, s.st_uid, geteuid());
-		return 0;
+		return false;
 	}
 
 	if(S_ISLNK(s.st_mode)) {
@@ -457,7 +458,7 @@ check1:
 		if(readlink(f, l, MAXBUFSIZE) < 0) {
 			logger(LOG_ERR, _("Unable to read symbolic link `%s': %s"), f,
 				   strerror(errno));
-			return 0;
+			return false;
 		}
 
 		f = l;
@@ -470,16 +471,16 @@ check1:
 check2:
 	if(lstat(f, &s) < 0 && errno != ENOENT) {
 		logger(LOG_ERR, _("Couldn't stat `%s': %s"), f, strerror(errno));
-		return 0;
+		return false;
 	}
 
 	if(errno == ENOENT)
-		return 1;
+		return true;
 
 	if(s.st_uid != geteuid()) {
 		logger(LOG_ERR, _("`%s' is owned by UID %d instead of %d"),
 			   f, s.st_uid, geteuid());
-		return 0;
+		return false;
 	}
 
 	if(S_ISLNK(s.st_mode)) {
@@ -488,7 +489,7 @@ check2:
 		if(readlink(f, l, MAXBUFSIZE) < 0) {
 			logger(LOG_ERR, _("Unable to read symbolic link `%s': %s"), f,
 				   strerror(errno));
-			return 0;
+			return false;
 		}
 
 		f = l;
@@ -498,15 +499,14 @@ check2:
 	if(s.st_mode & 0007) {
 		/* Accessible by others */
 		logger(LOG_ERR, _("`%s' has unsecure permissions"), f);
-		return 0;
+		return false;
 	}
 #endif
 
-	return 1;
+	return true;
 }
 
-FILE *ask_and_safe_open(const char *filename, const char *what,
-						const char *mode)
+FILE *ask_and_safe_open(const char *filename, const char *what, bool safe, const char *mode)
 {
 	FILE *r;
 	char *directory;
@@ -562,12 +562,14 @@ FILE *ask_and_safe_open(const char *filename, const char *what,
 	}
 
 	/* Then check the file for nasty attacks */
-	if(!is_safe_path(fn)) {		/* Do not permit any directories that are readable or writeable by other users. */
-		fprintf(stderr, _("The file `%s' (or any of the leading directories) has unsafe permissions.\n"
-				 "I will not create or overwrite this file.\n"), fn);
-		fclose(r);
-		free(fn);
-		return NULL;
+	if(safe) {
+		if(!is_safe_path(fn)) {		/* Do not permit any directories that are readable or writeable by other users. */
+			fprintf(stderr, _("The file `%s' (or any of the leading directories) has unsafe permissions.\n"
+					 "I will not create or overwrite this file.\n"), fn);
+			fclose(r);
+			free(fn);
+			return NULL;
+		}
 	}
 
 	free(fn);
diff --git a/src/conf.h b/src/conf.h
index 32bb9091..b4064cd1 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -17,14 +17,13 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: conf.h,v 1.6.4.39 2003/07/17 15:06:26 guus Exp $
+    $Id: conf.h,v 1.6.4.40 2003/07/22 20:55:19 guus Exp $
 */
 
 #ifndef __TINC_CONF_H__
 #define __TINC_CONF_H__
 
 #include "avl_tree.h"
-#include "subnet.h"
 
 typedef struct config_t {
 	char *variable;
@@ -33,11 +32,13 @@ typedef struct config_t {
 	int line;
 } config_t;
 
+#include "subnet.h"
+
 extern avl_tree_t *config_tree;
 
 extern int pingtimeout;
 extern int maxtimeout;
-extern int bypass_security;
+extern bool bypass_security;
 extern char *confbase;
 extern char *netname;
 
@@ -48,15 +49,15 @@ extern void free_config(config_t *);
 extern void config_add(avl_tree_t *, config_t *);
 extern config_t *lookup_config(avl_tree_t *, char *);
 extern config_t *lookup_config_next(avl_tree_t *, config_t *);
-extern int get_config_bool(config_t *, int *);
-extern int get_config_int(config_t *, int *);
-extern int get_config_string(config_t *, char **);
-extern int get_config_address(config_t *, struct addrinfo **);
-extern int get_config_subnet(config_t *, struct subnet_t **);
+extern bool get_config_bool(config_t *, bool *);
+extern bool get_config_int(config_t *, int *);
+extern bool get_config_string(config_t *, char **);
+extern bool get_config_address(config_t *, struct addrinfo **);
+extern bool get_config_subnet(config_t *, struct subnet_t **);
 
 extern int read_config_file(avl_tree_t *, const char *);
-extern int read_server_config(void);
-extern FILE *ask_and_safe_open(const char *, const char *, const char *);
-extern int is_safe_path(const char *);
+extern bool read_server_config(void);
+extern FILE *ask_and_safe_open(const char *, const char *, bool, const char *);
+extern bool is_safe_path(const char *);
 
 #endif							/* __TINC_CONF_H__ */
diff --git a/src/connection.c b/src/connection.c
index 9890f51f..eba74ae4 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: connection.c,v 1.1.2.40 2003/07/17 15:06:26 guus Exp $
+    $Id: connection.c,v 1.1.2.41 2003/07/22 20:55:19 guus Exp $
 */
 
 #include "system.h"
@@ -128,7 +128,7 @@ void dump_connections(void)
 	logger(LOG_DEBUG, _("End of connections."));
 }
 
-int read_connection_config(connection_t *c)
+bool read_connection_config(connection_t *c)
 {
 	char *fname;
 	int x;
@@ -139,5 +139,5 @@ int read_connection_config(connection_t *c)
 	x = read_config_file(c->config_tree, fname);
 	free(fname);
 
-	return x;
+	return x == 0;
 }
diff --git a/src/connection.h b/src/connection.h
index 1b3ca367..0092f04e 100644
--- a/src/connection.h
+++ b/src/connection.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: connection.h,v 1.1.2.34 2003/07/17 15:06:26 guus Exp $
+    $Id: connection.h,v 1.1.2.35 2003/07/22 20:55:19 guus Exp $
 */
 
 #ifndef __TINC_CONNECTION_H__
@@ -27,11 +27,6 @@
 #include <openssl/evp.h>
 
 #include "avl_tree.h"
-#include "conf.h"
-#include "edge.h"
-#include "list.h"
-#include "net.h"
-#include "node.h"
 
 #define OPTION_INDIRECT		0x0001
 #define OPTION_TCPONLY		0x0002
@@ -49,10 +44,15 @@ typedef struct connection_status_t {
 	int unused:18;
 } connection_status_t;
 
+#include "edge.h"
+#include "list.h"
+#include "net.h"
+#include "node.h"
+
 typedef struct connection_t {
 	char *name;					/* name he claims to have */
 
-	sockaddr_t address;			/* his real (internet) ip */
+	union sockaddr_t address;			/* his real (internet) ip */
 	char *hostname;				/* the hostname of its real ip */
 	int protocol_version;		/* used protocol */
 
@@ -105,6 +105,6 @@ extern void free_connection(connection_t *);
 extern void connection_add(connection_t *);
 extern void connection_del(connection_t *);
 extern void dump_connections(void);
-extern int read_connection_config(connection_t *);
+extern bool read_connection_config(connection_t *);
 
 #endif							/* __TINC_CONNECTION_H__ */
diff --git a/src/cygwin/device.c b/src/cygwin/device.c
index 4e73e4c4..49bbbea3 100644
--- a/src/cygwin/device.c
+++ b/src/cygwin/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.9 2003/07/18 13:41:35 guus Exp $
+    $Id: device.c,v 1.1.2.10 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -84,7 +84,7 @@ HANDLE handle;
 pid_t reader_pid;
 int sp[2];
 
-int setup_device(void)
+bool setup_device(void)
 {
 	HKEY key, key2, adapterkey;
 	int i;
@@ -108,7 +108,7 @@ int setup_device(void)
 
 	if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {
 		logger(LOG_ERR, _("Unable to read registry"));
-		return -1;
+		return false;
 	}
 
 	for (i = 0; ; i++) {
@@ -120,7 +120,7 @@ int setup_device(void)
 
                 if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {
 			logger(LOG_ERR, _("Unable to read registry"));
-			return -1;
+			return false;
 		}
 
 		len = sizeof(productname);
@@ -146,7 +146,7 @@ skip:
 
 	if(!found) {
 		logger(LOG_ERR, _("No CIPE adapters found!"));
-		return -1;
+		return false;
 	}
 
 	/* Get adapter name */
@@ -166,14 +166,14 @@ skip:
 
 	if(socketpair(AF_UNIX, SOCK_DGRAM, PF_UNIX, sp)) {
 		logger(LOG_DEBUG, _("System call `%s' failed: %s"), "socketpair", strerror(errno));
-		return -1;
+		return false;
 	}
 
 	reader_pid = fork();
 
 	if(reader_pid == -1) {
 		logger(LOG_DEBUG, _("System call `%s' failed: %s"), "fork", strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(!reader_pid) {
@@ -213,7 +213,7 @@ skip:
 	
 	if(handle == INVALID_HANDLE_VALUE) {
 		logger(LOG_ERR, _("Could not open CIPE tap device for writing!"));
-		return -1;
+		return false;
 	}
 
 	device_fd = sp[0];
@@ -228,7 +228,7 @@ skip:
 	read(device_fd, &gelukt, 1);
 	if(gelukt != 1) {
 		logger(LOG_DEBUG, "Tap reader failed!");
-		return -1;
+		return false;
 	}
 
 	if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
@@ -238,7 +238,7 @@ skip:
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return false;
 }
 
 void close_device(void)
@@ -252,7 +252,7 @@ void close_device(void)
 	kill(reader_pid, SIGKILL);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -261,7 +261,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 	
 	packet->len = lenin;
@@ -271,10 +271,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
 			   device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	int lenout;
 
@@ -285,12 +285,12 @@ int write_packet(vpn_packet_t *packet)
 
 	if(!WriteFile (handle, packet->data, packet->len, &lenout, NULL)) {
 		logger(LOG_ERR, "Error while writing to %s %s", device_info, device);
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
 
-	return 0;
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/darwin/device.c b/src/darwin/device.c
index ef6c7777..00381a5f 100644
--- a/src/darwin/device.c
+++ b/src/darwin/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.9 2003/07/18 13:41:36 guus Exp $
+    $Id: device.c,v 1.1.2.10 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "system.h"
@@ -30,14 +30,13 @@
 #define DEFAULT_DEVICE "/dev/tun0"
 
 int device_fd = -1;
-int device_type;
 char *device;
 char *iface;
 char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	cp();
 
@@ -49,14 +48,14 @@ int setup_device(void)
 
 	if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_info = _("MacOS/X tun device");
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -66,7 +65,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -75,7 +74,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	packet->data[12] = 0x08;
@@ -88,10 +87,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"),
 			   packet->len, device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -101,10 +100,12 @@ int write_packet(vpn_packet_t *packet)
 	if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
 		logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
+
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/device.h b/src/device.h
index 4dce250e..55a0c449 100644
--- a/src/device.h
+++ b/src/device.h
@@ -17,21 +17,23 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.h,v 1.1.2.10 2003/07/18 13:45:06 guus Exp $
+    $Id: device.h,v 1.1.2.11 2003/07/22 20:55:19 guus Exp $
 */
 
 #ifndef __TINC_DEVICE_H__
 #define __TINC_DEVICE_H__
 
+#include "net.h"
+
 extern int device_fd;
 extern char *device;
 
 extern char *iface;
 
-extern int setup_device(void);
+extern bool setup_device(void);
 extern void close_device(void);
-extern int read_packet(vpn_packet_t *);
-extern int write_packet(vpn_packet_t *);
+extern bool read_packet(struct vpn_packet_t *);
+extern bool write_packet(struct vpn_packet_t *);
 extern void dump_device_stats(void);
 
 #endif							/* __TINC_DEVICE_H__ */
diff --git a/src/freebsd/device.c b/src/freebsd/device.c
index b85923b4..4ebdac2b 100644
--- a/src/freebsd/device.c
+++ b/src/freebsd/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.12 2003/07/18 13:41:36 guus Exp $
+    $Id: device.c,v 1.1.2.13 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "system.h"
@@ -30,14 +30,13 @@
 #define DEFAULT_DEVICE "/dev/tap0"
 
 int device_fd = -1;
-int device_type;
 char *device;
 char *iface;
 char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	cp();
 
@@ -49,14 +48,14 @@ int setup_device(void)
 
 	if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_info = _("FreeBSD tap device");
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -66,7 +65,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -75,7 +74,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	packet->len = lenin;
@@ -85,10 +84,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"),
 			   packet->len, device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -98,10 +97,12 @@ int write_packet(vpn_packet_t *packet)
 	if(write(device_fd, packet->data, packet->len) < 0) {
 		logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
+
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/graph.c b/src/graph.c
index 147586e5..e57ffe50 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: graph.c,v 1.1.2.26 2003/07/18 13:45:06 guus Exp $
+    $Id: graph.c,v 1.1.2.27 2003/07/22 20:55:19 guus Exp $
 */
 
 /* We need to generate two trees from the graph:
@@ -69,7 +69,7 @@ void mst_kruskal(void)
 	connection_t *c;
 	int nodes = 0;
 	int safe_edges = 0;
-	int skipped;
+	bool skipped;
 
 	cp();
 	
@@ -77,7 +77,7 @@ void mst_kruskal(void)
 
 	for(node = connection_tree->head; node; node = node->next) {
 		c = (connection_t *) node->data;
-		c->status.mst = 0;
+		c->status.mst = false;
 	}
 
 	/* Do we have something to do at all? */
@@ -91,33 +91,33 @@ void mst_kruskal(void)
 
 	for(node = node_tree->head; node; node = node->next) {
 		n = (node_t *) node->data;
-		n->status.visited = 0;
+		n->status.visited = false;
 		nodes++;
 	}
 
 	/* Starting point */
 
-	((edge_t *) edge_weight_tree->head->data)->from->status.visited = 1;
+	((edge_t *) edge_weight_tree->head->data)->from->status.visited = true;
 
 	/* Add safe edges */
 
-	for(skipped = 0, node = edge_weight_tree->head; node; node = next) {
+	for(skipped = false, node = edge_weight_tree->head; node; node = next) {
 		next = node->next;
 		e = (edge_t *) node->data;
 
 		if(!e->reverse || e->from->status.visited == e->to->status.visited) {
-			skipped = 1;
+			skipped = true;
 			continue;
 		}
 
-		e->from->status.visited = 1;
-		e->to->status.visited = 1;
+		e->from->status.visited = true;
+		e->to->status.visited = true;
 
 		if(e->connection)
-			e->connection->status.mst = 1;
+			e->connection->status.mst = true;
 
 		if(e->reverse->connection)
-			e->reverse->connection->status.mst = 1;
+			e->reverse->connection->status.mst = true;
 
 		safe_edges++;
 
@@ -125,7 +125,7 @@ void mst_kruskal(void)
 				   e->to->name, e->weight);
 
 		if(skipped) {
-			skipped = 0;
+			skipped = false;
 			next = edge_weight_tree->head;
 			continue;
 		}
@@ -145,7 +145,7 @@ void sssp_bfs(void)
 	edge_t *e;
 	node_t *n;
 	avl_tree_t *todo_tree;
-	int indirect;
+	bool indirect;
 	char *name;
 	char *address, *port;
 	char *envp[7];
@@ -159,14 +159,14 @@ void sssp_bfs(void)
 
 	for(node = node_tree->head; node; node = node->next) {
 		n = (node_t *) node->data;
-		n->status.visited = 0;
-		n->status.indirect = 1;
+		n->status.visited = false;
+		n->status.indirect = true;
 	}
 
 	/* Begin with myself */
 
-	myself->status.visited = 1;
-	myself->status.indirect = 0;
+	myself->status.visited = true;
+	myself->status.indirect = false;
 	myself->nexthop = myself;
 	myself->via = myself;
 	node = avl_alloc_node();
@@ -212,7 +212,7 @@ void sssp_bfs(void)
 				   && (!e->to->status.indirect || indirect))
 					continue;
 
-				e->to->status.visited = 1;
+				e->to->status.visited = true;
 				e->to->status.indirect = indirect;
 				e->to->nexthop = (n->nexthop == myself) ? e->to : n->nexthop;
 				e->to->via = indirect ? n->via : e->to;
@@ -257,8 +257,8 @@ void sssp_bfs(void)
 					   n->name, n->hostname);
 			}
 
-			n->status.validkey = 0;
-			n->status.waitingforkey = 0;
+			n->status.validkey = false;
+			n->status.waitingforkey = false;
 
 			asprintf(&envp[0], "NETNAME=%s", netname ? : "");
 			asprintf(&envp[1], "DEVICE=%s", device ? : "");
diff --git a/src/linux/device.c b/src/linux/device.c
index caee2548..904c36cb 100644
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.19 2003/07/18 13:41:36 guus Exp $
+    $Id: device.c,v 1.1.2.20 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "system.h"
@@ -39,14 +39,14 @@
 #include "route.h"
 #include "utils.h"
 
-enum {
+typedef enum device_type_t {
 	DEVICE_TYPE_ETHERTAP,
 	DEVICE_TYPE_TUN,
 	DEVICE_TYPE_TAP,
-};
+} device_type_t;
 
 int device_fd = -1;
-int device_type;
+device_type_t device_type;
 char *device;
 char *iface;
 char ifrname[IFNAMSIZ];
@@ -55,7 +55,7 @@ char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	struct ifreq ifr;
 
@@ -74,7 +74,7 @@ int setup_device(void)
 
 	if(device_fd < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 #ifdef HAVE_TUNTAP
@@ -105,7 +105,7 @@ int setup_device(void)
 #endif
 	{
 		if(routing_mode == RMODE_ROUTER)
-			overwrite_mac = 1;
+			overwrite_mac = true;
 		device_info = _("Linux ethertap device");
 		device_type = DEVICE_TYPE_ETHERTAP;
 		iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
@@ -113,7 +113,7 @@ int setup_device(void)
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -123,7 +123,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 	
@@ -136,7 +136,7 @@ int read_packet(vpn_packet_t *packet)
 			if(lenin <= 0) {
 				logger(LOG_ERR, _("Error while reading from %s %s: %s"),
 					   device_info, device, strerror(errno));
-				return -1;
+				return false;
 			}
 
 			packet->len = lenin + 10;
@@ -147,7 +147,7 @@ int read_packet(vpn_packet_t *packet)
 			if(lenin <= 0) {
 				logger(LOG_ERR, _("Error while reading from %s %s: %s"),
 					   device_info, device, strerror(errno));
-				return -1;
+				return false;
 			}
 
 			packet->len = lenin;
@@ -158,7 +158,7 @@ int read_packet(vpn_packet_t *packet)
 			if(lenin <= 0) {
 				logger(LOG_ERR, _("Error while reading from %s %s: %s"),
 					   device_info, device, strerror(errno));
-				return -1;
+				return false;
 			}
 
 			packet->len = lenin - 2;
@@ -170,10 +170,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
 			   device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -186,14 +186,14 @@ int write_packet(vpn_packet_t *packet)
 			if(write(device_fd, packet->data + 10, packet->len - 10) < 0) {
 				logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 					   strerror(errno));
-				return -1;
+				return false;
 			}
 			break;
 		case DEVICE_TYPE_TAP:
 			if(write(device_fd, packet->data, packet->len) < 0) {
 				logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 					   strerror(errno));
-				return -1;
+				return false;
 			}
 			break;
 		case DEVICE_TYPE_ETHERTAP:
@@ -202,14 +202,14 @@ int write_packet(vpn_packet_t *packet)
 			if(write(device_fd, packet->data - 2, packet->len + 2) < 0) {
 				logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 					   strerror(errno));
-				return -1;
+				return false;
 			}
 			break;
 	}
 
 	device_total_out += packet->len;
 
-	return 0;
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/logger.c b/src/logger.c
index b8ea0922..032349d1 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: logger.c,v 1.1.2.4 2003/07/17 15:06:26 guus Exp $
+    $Id: logger.c,v 1.1.2.5 2003/07/22 20:55:19 guus Exp $
 */
 
 #include "system.h"
@@ -25,18 +25,20 @@
 #include "conf.h"
 #include "logger.h"
 
-int debug_level = DEBUG_NOTHING;
-static int logmode = LOGMODE_STDERR;
+debug_t debug_level = DEBUG_NOTHING;
+static logmode_t logmode = LOGMODE_STDERR;
 static pid_t logpid;
 extern char *logfilename;
 static FILE *logfile = NULL;
 static const char *logident = NULL;
 
-void openlogger(const char *ident, int mode) {
+void openlogger(const char *ident, logmode_t mode) {
 	logident = ident;
 	logmode = mode;
 	
 	switch(mode) {
+		case LOGMODE_NULL:
+			break;
 		case LOGMODE_STDERR:
 			logpid = getpid();
 			break;
@@ -58,6 +60,8 @@ void logger(int priority, const char *format, ...) {
 	va_start(ap, format);
 
 	switch(logmode) {
+		case LOGMODE_NULL:
+			break;
 		case LOGMODE_STDERR:
 			vfprintf(stderr, format, ap);
 			fprintf(stderr, "\n");
@@ -85,6 +89,9 @@ void logger(int priority, const char *format, ...) {
 
 void closelogger(void) {
 	switch(logmode) {
+		case LOGMODE_NULL:
+		case LOGMODE_STDERR:
+			break;
 		case LOGMODE_FILE:
 			fclose(logfile);
 			break;
diff --git a/src/logger.h b/src/logger.h
index 615d0c3a..eb02fb87 100644
--- a/src/logger.h
+++ b/src/logger.h
@@ -1,6 +1,6 @@
 #ifndef __TINC_LOGGER_H__
 
-enum {
+typedef enum debug_t {
 	DEBUG_NOTHING = 0,			/* Quiet mode, only show starting/stopping of the daemon */
 	DEBUG_ALWAYS = 0,
 	DEBUG_CONNECTIONS = 1,		/* Show (dis)connects of other tinc daemons via TCP */
@@ -11,17 +11,17 @@ enum {
 	DEBUG_TRAFFIC = 5,			/* Show network traffic information */
 	DEBUG_PACKET = 6,			/* Show contents of each packet that is being sent/received */
 	DEBUG_SCARY_THINGS = 10		/* You have been warned */
-};
+} debug_t;
 
-enum {
+typedef enum logmode_t {
 	LOGMODE_NULL,
 	LOGMODE_STDERR,
 	LOGMODE_FILE,
 	LOGMODE_SYSLOG
-};
+} logmode_t;
 
-extern int debug_level;
-extern void openlogger(const char *, int);
+extern debug_t debug_level;
+extern void openlogger(const char *, logmode_t);
 extern void logger(int, const char *, ...) __attribute__ ((format(printf, 2, 3)));
 extern void closelogger(void);
 
diff --git a/src/meta.c b/src/meta.c
index 967477b5..e818b0b4 100644
--- a/src/meta.c
+++ b/src/meta.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: meta.c,v 1.1.2.36 2003/07/17 15:06:26 guus Exp $
+    $Id: meta.c,v 1.1.2.37 2003/07/22 20:55:19 guus Exp $
 */
 
 #include "system.h"
@@ -32,7 +32,7 @@
 #include "system.h"
 #include "utils.h"
 
-int send_meta(connection_t *c, char *buffer, int length)
+bool send_meta(connection_t *c, char *buffer, int length)
 {
 	char *bufp;
 	int outlen;
@@ -58,13 +58,13 @@ int send_meta(connection_t *c, char *buffer, int length)
 				continue;
 			logger(LOG_ERR, _("Sending meta data to %s (%s) failed: %s"), c->name,
 				   c->hostname, strerror(errno));
-			return -1;
+			return false;
 		}
 		bufp += result;
 		length -= result;
 	}
 	
-	return 0;
+	return true;
 }
 
 void broadcast_meta(connection_t *from, char *buffer, int length)
@@ -82,13 +82,13 @@ void broadcast_meta(connection_t *from, char *buffer, int length)
 	}
 }
 
-int receive_meta(connection_t *c)
+bool receive_meta(connection_t *c)
 {
 	int x;
 	socklen_t l = sizeof(x);
 	int oldlen, i;
 	int lenin, reqlen;
-	int decrypted = 0;
+	bool decrypted = false;
 	char inbuf[MAXBUFSIZE];
 
 	cp();
@@ -96,13 +96,13 @@ int receive_meta(connection_t *c)
 	if(getsockopt(c->socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0) {
 		logger(LOG_ERR, _("This is a bug: %s:%d: %d:%s %s (%s)"), __FILE__,
 			   __LINE__, c->socket, strerror(errno), c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	if(x) {
 		logger(LOG_ERR, _("Metadata socket error for %s (%s): %s"),
 			   c->name, c->hostname, strerror(x));
-		return -1;
+		return false;
 	}
 
 	/* Strategy:
@@ -121,12 +121,12 @@ int receive_meta(connection_t *c)
 			ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection closed by %s (%s)"),
 					   c->name, c->hostname);
 		} else if(errno == EINTR)
-			return 0;
+			return true;
 		else
 			logger(LOG_ERR, _("Metadata socket read error for %s (%s): %s"),
 				   c->name, c->hostname, strerror(errno));
 
-		return -1;
+		return false;
 	}
 
 	oldlen = c->buflen;
@@ -138,7 +138,7 @@ int receive_meta(connection_t *c)
 		if(c->status.decryptin && !decrypted) {
 			EVP_DecryptUpdate(c->inctx, inbuf, &lenin, c->buffer + oldlen, lenin);
 			memcpy(c->buffer + oldlen, inbuf, lenin);
-			decrypted = 1;
+			decrypted = true;
 		}
 
 		/* Are we receiving a TCPpacket? */
@@ -172,8 +172,8 @@ int receive_meta(connection_t *c)
 
 		if(reqlen) {
 			c->reqlen = reqlen;
-			if(receive_request(c))
-				return -1;
+			if(!receive_request(c))
+				return false;
 
 			c->buflen -= reqlen;
 			lenin -= reqlen;
@@ -188,10 +188,10 @@ int receive_meta(connection_t *c)
 	if(c->buflen >= MAXBUFSIZE) {
 		logger(LOG_ERR, _("Metadata read buffer overflow for %s (%s)"),
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	c->last_ping_time = now;
 
-	return 0;
+	return true;
 }
diff --git a/src/meta.h b/src/meta.h
index 8177e13b..f882f146 100644
--- a/src/meta.h
+++ b/src/meta.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: meta.h,v 1.1.2.9 2003/07/12 17:41:45 guus Exp $
+    $Id: meta.h,v 1.1.2.10 2003/07/22 20:55:19 guus Exp $
 */
 
 #ifndef __TINC_META_H__
@@ -25,8 +25,8 @@
 
 #include "connection.h"
 
-extern int send_meta(connection_t *, const char *, int);
-extern int broadcast_meta(connection_t *, const char *, int);
-extern int receive_meta(connection_t *);
+extern bool send_meta(struct connection_t *, const char *, int);
+extern bool broadcast_meta(struct connection_t *, const char *, int);
+extern bool receive_meta(struct connection_t *);
 
 #endif							/* __TINC_META_H__ */
diff --git a/src/mingw/device.c b/src/mingw/device.c
index c2cdca84..d8aabcc4 100644
--- a/src/mingw/device.c
+++ b/src/mingw/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.1 2003/07/21 15:51:00 guus Exp $
+    $Id: device.c,v 1.1.2.2 2003/07/22 20:55:21 guus Exp $
 */
 
 #error "Device driver for MinGW environment not written yet!"
@@ -85,7 +85,7 @@ HANDLE handle;
 pid_t reader_pid;
 int sp[2];
 
-int setup_device(void)
+bool setup_device(void)
 {
 	HKEY key, key2, adapterkey;
 	int i;
@@ -109,7 +109,7 @@ int setup_device(void)
 
 	if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {
 		logger(LOG_ERR, _("Unable to read registry"));
-		return -1;
+		return false;
 	}
 
 	for (i = 0; ; i++) {
@@ -121,7 +121,7 @@ int setup_device(void)
 
                 if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {
 			logger(LOG_ERR, _("Unable to read registry"));
-			return -1;
+			return false;
 		}
 
 		len = sizeof(productname);
@@ -147,7 +147,7 @@ skip:
 
 	if(!found) {
 		logger(LOG_ERR, _("No CIPE adapters found!"));
-		return -1;
+		return false;
 	}
 
 	/* Get adapter name */
@@ -167,14 +167,14 @@ skip:
 
 	if(socketpair(AF_UNIX, SOCK_DGRAM, PF_UNIX, sp)) {
 		logger(LOG_DEBUG, _("System call `%s' failed: %s"), "socketpair", strerror(errno));
-		return -1;
+		return false;
 	}
 
 	reader_pid = fork();
 
 	if(reader_pid == -1) {
 		logger(LOG_DEBUG, _("System call `%s' failed: %s"), "fork", strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(!reader_pid) {
@@ -214,7 +214,7 @@ skip:
 	
 	if(handle == INVALID_HANDLE_VALUE) {
 		logger(LOG_ERR, _("Could not open CIPE tap device for writing!"));
-		return -1;
+		return false;
 	}
 
 	device_fd = sp[0];
@@ -229,7 +229,7 @@ skip:
 	read(device_fd, &gelukt, 1);
 	if(gelukt != 1) {
 		logger(LOG_DEBUG, "Tap reader failed!");
-		return -1;
+		return false;
 	}
 
 	if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
@@ -239,7 +239,7 @@ skip:
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -253,7 +253,7 @@ void close_device(void)
 	kill(reader_pid, SIGKILL);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -262,7 +262,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 	
 	packet->len = lenin;
@@ -272,10 +272,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
 			   device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	int lenout;
 
@@ -286,12 +286,12 @@ int write_packet(vpn_packet_t *packet)
 
 	if(!WriteFile (handle, packet->data, packet->len, &lenout, NULL)) {
 		logger(LOG_ERR, "Error while writing to %s %s", device_info, device);
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
 
-	return 0;
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/net.c b/src/net.c
index d43aede4..475ea0c9 100644
--- a/src/net.c
+++ b/src/net.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net.c,v 1.35.4.191 2003/07/17 15:06:26 guus Exp $
+    $Id: net.c,v 1.35.4.192 2003/07/22 20:55:19 guus Exp $
 */
 
 #include "system.h"
@@ -40,9 +40,7 @@
 #include "route.h"
 #include "subnet.h"
 
-int do_purge = 0;
-int sighup = 0;
-int sigalrm = 0;
+bool do_purge = false;
 
 time_t now = 0;
 
@@ -134,11 +132,11 @@ static int build_fdset(fd_set * fs)
 /*
   Terminate a connection:
   - Close the socket
-  - Remove associated edge and tell other connections about it if report = 1
+  - Remove associated edge and tell other connections about it if report = true
   - Check if we need to retry making an outgoing connection
   - Deactivate the host
 */
-void terminate_connection(connection_t *c, int report)
+void terminate_connection(connection_t *c, bool report)
 {
 	cp();
 
@@ -148,8 +146,8 @@ void terminate_connection(connection_t *c, int report)
 	ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Closing connection with %s (%s)"),
 			   c->name, c->hostname);
 
-	c->status.remove = 1;
-	c->status.active = 0;
+	c->status.remove = true;
+	c->status.active = false;
 
 	if(c->node)
 		c->node->connection = NULL;
@@ -200,8 +198,8 @@ static void check_dead_connections(void)
 				if(c->status.pinged) {
 					ifdebug(CONNECTIONS) logger(LOG_INFO, _("%s (%s) didn't respond to PING"),
 							   c->name, c->hostname);
-					c->status.timeout = 1;
-					terminate_connection(c, 1);
+					c->status.timeout = true;
+					terminate_connection(c, true);
 				} else {
 					send_ping(c);
 				}
@@ -214,7 +212,7 @@ static void check_dead_connections(void)
 				}
 				ifdebug(CONNECTIONS) logger(LOG_WARNING, _("Timeout from %s (%s) during authentication"),
 						   c->name, c->hostname);
-				terminate_connection(c, 0);
+				terminate_connection(c, false);
 			}
 		}
 	}
@@ -235,7 +233,7 @@ static void check_network_activity(fd_set * f)
 	cp();
 
 	if(FD_ISSET(device_fd, f)) {
-		if(!read_packet(&packet))
+		if(read_packet(&packet))
 			route_outgoing(&packet);
 	}
 
@@ -247,7 +245,7 @@ static void check_network_activity(fd_set * f)
 
 		if(FD_ISSET(c->socket, f)) {
 			if(c->status.connecting) {
-				c->status.connecting = 0;
+				c->status.connecting = false;
 				getsockopt(c->socket, SOL_SOCKET, SO_ERROR, &result, &len);
 
 				if(!result)
@@ -262,7 +260,7 @@ static void check_network_activity(fd_set * f)
 				}
 			}
 
-			if(receive_meta(c) < 0) {
+			if(!receive_meta(c)) {
 				terminate_connection(c, c->status.active);
 				continue;
 			}
@@ -321,7 +319,7 @@ void main_loop(void)
 
 		if(do_purge) {
 			purge();
-			do_purge = 0;
+			do_purge = false;
 		}
 
 		/* Let's check if everybody is still alive */
@@ -361,7 +359,7 @@ void main_loop(void)
 				event->handler(event->data);
 				event_del(event);
 			}
-			sigalrm = 0;
+			sigalrm = false;
 		}
 
 		if(sighup) {
@@ -370,14 +368,14 @@ void main_loop(void)
 			char *fname;
 			struct stat s;
 			
-			sighup = 0;
+			sighup = false;
 			
 			/* Reread our own configuration file */
 
 			exit_configuration(&config_tree);
 			init_configuration(&config_tree);
 
-			if(read_server_config()) {
+			if(!read_server_config()) {
 				logger(LOG_ERR, _("Unable to reread configuration file, exitting."));
 				exit(1);
 			}
diff --git a/src/net.h b/src/net.h
index 28dd4eaf..22d78b2b 100644
--- a/src/net.h
+++ b/src/net.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net.h,v 1.9.4.65 2003/07/18 12:16:24 guus Exp $
+    $Id: net.h,v 1.9.4.66 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_NET_H__
@@ -54,7 +54,7 @@ typedef struct ipv6_t {
 
 typedef short length_t;
 
-typedef union {
+typedef union sockaddr_t {
 	struct sockaddr sa;
 	struct sockaddr_in in;
 	struct sockaddr_in6 in6;
@@ -87,6 +87,12 @@ typedef struct packet_queue_t {
 	queue_element_t *tail;
 } packet_queue_t;
 
+typedef struct listen_socket_t {
+	int tcp;
+	int udp;
+	sockaddr_t sa;
+} listen_socket_t;
+
 #include "conf.h"
 
 typedef struct outgoing_t {
@@ -97,12 +103,6 @@ typedef struct outgoing_t {
 	struct addrinfo *aip;
 } outgoing_t;
 
-typedef struct listen_socket_t {
-	int tcp;
-	int udp;
-	sockaddr_t sa;
-} listen_socket_t;
-
 extern int maxtimeout;
 extern int seconds_till_retry;
 extern int addressfamily;
@@ -111,8 +111,8 @@ extern listen_socket_t listen_socket[MAXSOCKETS];
 extern int listen_sockets;
 extern int keyexpires;
 extern int keylifetime;
-extern int do_prune;
-extern int do_purge;
+extern bool do_prune;
+extern bool do_purge;
 extern char *myport;
 extern time_t now;
 extern EVP_CIPHER_CTX packet_ctx;
@@ -125,19 +125,19 @@ extern void retry_outgoing(outgoing_t *);
 extern void handle_incoming_vpn_data(int);
 extern void finish_connecting(struct connection_t *);
 extern void do_outgoing_connection(struct connection_t *);
-extern int handle_new_meta_connection(int);
+extern bool handle_new_meta_connection(int);
 extern int setup_listen_socket(sockaddr_t *);
 extern int setup_vpn_in_socket(sockaddr_t *);
 extern void send_packet(struct node_t *, vpn_packet_t *);
 extern void receive_tcppacket(struct connection_t *, char *, int);
 extern void broadcast_packet(struct node_t *, vpn_packet_t *);
-extern int setup_network_connections(void);
+extern bool setup_network_connections(void);
 extern void setup_outgoing_connection(struct outgoing_t *);
 extern void try_outgoing_connections(void);
 extern void close_network_connections(void);
 extern void main_loop(void);
-extern void terminate_connection(struct connection_t *, int);
+extern void terminate_connection(struct connection_t *, bool);
 extern void flush_queue(struct node_t *);
-extern int read_rsa_public_key(struct connection_t *);
+extern bool read_rsa_public_key(struct connection_t *);
 
 #endif							/* __TINC_NET_H__ */
diff --git a/src/net_packet.c b/src/net_packet.c
index e858daa0..cac24ee6 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_packet.c,v 1.1.2.34 2003/07/17 15:06:26 guus Exp $
+    $Id: net_packet.c,v 1.1.2.35 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -239,7 +239,7 @@ static void send_udppacket(node_t *n, vpn_packet_t *inpkt)
 		if(!n->status.waitingforkey)
 			send_req_key(n->nexthop->connection, myself, n);
 
-		n->status.waitingforkey = 1;
+		n->status.waitingforkey = true;
 
 		return;
 	}
@@ -350,8 +350,8 @@ void send_packet(node_t *n, vpn_packet_t *packet)
 			   n->name, via->name, n->via->hostname);
 
 	if((myself->options | via->options) & OPTION_TCPONLY) {
-		if(send_tcppacket(via->connection, packet))
-			terminate_connection(via->connection, 1);
+		if(!send_tcppacket(via->connection, packet))
+			terminate_connection(via->connection, true);
 	} else
 		send_udppacket(via, packet);
 }
diff --git a/src/net_setup.c b/src/net_setup.c
index b3c565ba..5a5564e9 100644
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_setup.c,v 1.1.2.36 2003/07/18 13:45:06 guus Exp $
+    $Id: net_setup.c,v 1.1.2.37 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -44,7 +44,7 @@
 
 char *myport;
 
-int read_rsa_public_key(connection_t *c)
+bool read_rsa_public_key(connection_t *c)
 {
 	FILE *fp;
 	char *fname;
@@ -63,56 +63,50 @@ int read_rsa_public_key(connection_t *c)
 		BN_hex2bn(&c->rsa_key->n, key);
 		BN_hex2bn(&c->rsa_key->e, "FFFF");
 		free(key);
-		return 0;
+		return true;
 	}
 
 	/* Else, check for PublicKeyFile statement and read it */
 
-	if(get_config_string
-	   (lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
-		if(is_safe_path(fname)) {
-			fp = fopen(fname, "r");
-
-			if(!fp) {
-				logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
-					   fname, strerror(errno));
-				free(fname);
-				return -1;
-			}
+	if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
+		fp = fopen(fname, "r");
 
+		if(!fp) {
+			logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
+				   fname, strerror(errno));
 			free(fname);
-			c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
-			fclose(fp);
+			return false;
+		}
 
-			if(c->rsa_key)
-				return 0;		/* Woohoo. */
+		free(fname);
+		c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
+		fclose(fp);
 
-			/* If it fails, try PEM_read_RSA_PUBKEY. */
-			fp = fopen(fname, "r");
+		if(c->rsa_key)
+			return true;		/* Woohoo. */
 
-			if(!fp) {
-				logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
-					   fname, strerror(errno));
-				free(fname);
-				return -1;
-			}
+		/* If it fails, try PEM_read_RSA_PUBKEY. */
+		fp = fopen(fname, "r");
 
+		if(!fp) {
+			logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
+				   fname, strerror(errno));
 			free(fname);
-			c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-			fclose(fp);
+			return false;
+		}
 
-			if(c->rsa_key) {
-//				RSA_blinding_on(c->rsa_key, NULL);
-				return 0;
-			}
+		free(fname);
+		c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
+		fclose(fp);
 
-			logger(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
-				   fname, strerror(errno));
-			return -1;
-		} else {
-			free(fname);
-			return -1;
+		if(c->rsa_key) {
+//				RSA_blinding_on(c->rsa_key, NULL);
+			return true;
 		}
+
+		logger(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
+			   fname, strerror(errno));
+		return false;
 	}
 
 	/* Else, check if a harnessed public key is in the config file */
@@ -128,7 +122,7 @@ int read_rsa_public_key(connection_t *c)
 	free(fname);
 
 	if(c->rsa_key)
-		return 0;
+		return true;
 
 	/* Try again with PEM_read_RSA_PUBKEY. */
 
@@ -144,14 +138,14 @@ int read_rsa_public_key(connection_t *c)
 	free(fname);
 
 	if(c->rsa_key)
-		return 0;
+		return true;
 
 	logger(LOG_ERR, _("No public key for %s specified!"), c->name);
 
-	return -1;
+	return false;
 }
 
-int read_rsa_private_key(void)
+bool read_rsa_private_key(void)
 {
 	FILE *fp;
 	char *fname, *key;
@@ -164,7 +158,7 @@ int read_rsa_private_key(void)
 		BN_hex2bn(&myself->connection->rsa_key->d, key);
 		BN_hex2bn(&myself->connection->rsa_key->e, "FFFF");
 		free(key);
-		return 0;
+		return true;
 	}
 
 	if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
@@ -177,7 +171,7 @@ int read_rsa_private_key(void)
 			logger(LOG_ERR, _("Error reading RSA private key file `%s': %s"),
 				   fname, strerror(errno));
 			free(fname);
-			return -1;
+			return false;
 		}
 
 		free(fname);
@@ -188,27 +182,28 @@ int read_rsa_private_key(void)
 		if(!myself->connection->rsa_key) {
 			logger(LOG_ERR, _("Reading RSA private key file `%s' failed: %s"),
 				   fname, strerror(errno));
-			return -1;
+			return false;
 		}
 
-		return 0;
+		return true;
 	}
 
 	free(fname);
-	return -1;
+	return false;
 }
 
 /*
   Configure node_t myself and set up the local sockets (listen only)
 */
-int setup_myself(void)
+bool setup_myself(void)
 {
 	config_t *cfg;
 	subnet_t *subnet;
 	char *name, *hostname, *mode, *afname, *cipher, *digest;
 	char *address = NULL;
 	struct addrinfo hint, *ai, *aip;
-	int choice, err;
+	bool choice;
+	int err;
 
 	cp();
 
@@ -224,28 +219,28 @@ int setup_myself(void)
 
 	if(!get_config_string(lookup_config(config_tree, "Name"), &name)) {	/* Not acceptable */
 		logger(LOG_ERR, _("Name for tinc daemon required!"));
-		return -1;
+		return false;
 	}
 
-	if(check_id(name)) {
+	if(!check_id(name)) {
 		logger(LOG_ERR, _("Invalid name for myself!"));
 		free(name);
-		return -1;
+		return false;
 	}
 
 	myself->name = name;
 	myself->connection->name = xstrdup(name);
 
-	if(read_rsa_private_key())
-		return -1;
+	if(!read_rsa_private_key())
+		return false;
 
-	if(read_connection_config(myself->connection)) {
+	if(!read_connection_config(myself->connection)) {
 		logger(LOG_ERR, _("Cannot open host configuration file for myself!"));
-		return -1;
+		return false;
 	}
 
-	if(read_rsa_public_key(myself->connection))
-		return -1;
+	if(!read_rsa_public_key(myself->connection))
+		return false;
 
 	if(!get_config_string
 	   (lookup_config(myself->connection->config_tree, "Port"), &myport))
@@ -257,7 +252,7 @@ int setup_myself(void)
 
 	while(cfg) {
 		if(!get_config_subnet(cfg, &subnet))
-			return -1;
+			return false;
 
 		subnet_add(myself, subnet);
 
@@ -274,14 +269,11 @@ int setup_myself(void)
 		if(choice)
 			myself->options |= OPTION_TCPONLY;
 
-	if(get_config_bool
-	   (lookup_config(myself->connection->config_tree, "IndirectData"),
-		&choice))
+	if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice))
 		if(choice)
 			myself->options |= OPTION_INDIRECT;
 
-	if(get_config_bool
-	   (lookup_config(myself->connection->config_tree, "TCPOnly"), &choice))
+	if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice))
 		if(choice)
 			myself->options |= OPTION_TCPONLY;
 
@@ -297,14 +289,14 @@ int setup_myself(void)
 			routing_mode = RMODE_HUB;
 		else {
 			logger(LOG_ERR, _("Invalid routing mode!"));
-			return -1;
+			return false;
 		}
 		free(mode);
 	} else
 		routing_mode = RMODE_ROUTER;
 
-	get_config_bool(lookup_config(config_tree, "PriorityInheritance"),
-					&priorityinheritance);
+	get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
+
 #if !defined(SOL_IP) || !defined(IP_TOS)
 	if(priorityinheritance)
 		logger(LOG_WARNING, _("PriorityInheritance not supported on this platform"));
@@ -313,12 +305,10 @@ int setup_myself(void)
 	if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
 		macexpire = 600;
 
-	if(get_config_int
-	   (lookup_config(myself->connection->config_tree, "MaxTimeout"),
-		&maxtimeout)) {
+	if(get_config_int(lookup_config(myself->connection->config_tree, "MaxTimeout"), &maxtimeout)) {
 		if(maxtimeout <= 0) {
 			logger(LOG_ERR, _("Bogus maximum timeout!"));
-			return -1;
+			return false;
 		}
 	} else
 		maxtimeout = 900;
@@ -332,7 +322,7 @@ int setup_myself(void)
 			addressfamily = AF_UNSPEC;
 		else {
 			logger(LOG_ERR, _("Invalid address family!"));
-			return -1;
+			return false;
 		}
 		free(afname);
 	}
@@ -350,7 +340,7 @@ int setup_myself(void)
 
 			if(!myself->cipher) {
 				logger(LOG_ERR, _("Unrecognized cipher type!"));
-				return -1;
+				return false;
 			}
 		}
 	} else
@@ -385,7 +375,7 @@ int setup_myself(void)
 
 			if(!myself->digest) {
 				logger(LOG_ERR, _("Unrecognized digest type!"));
-				return -1;
+				return false;
 			}
 		}
 	} else
@@ -399,10 +389,10 @@ int setup_myself(void)
 		if(myself->digest) {
 			if(myself->maclength > myself->digest->md_size) {
 				logger(LOG_ERR, _("MAC length exceeds size of digest!"));
-				return -1;
+				return false;
 			} else if(myself->maclength < 0) {
 				logger(LOG_ERR, _("Bogus MAC length!"));
-				return -1;
+				return false;
 			}
 		}
 	} else
@@ -417,7 +407,7 @@ int setup_myself(void)
 		&myself->compression)) {
 		if(myself->compression < 0 || myself->compression > 11) {
 			logger(LOG_ERR, _("Bogus compression level!"));
-			return -1;
+			return false;
 		}
 	} else
 		myself->compression = 0;
@@ -428,8 +418,8 @@ int setup_myself(void)
 
 	myself->nexthop = myself;
 	myself->via = myself;
-	myself->status.active = 1;
-	myself->status.reachable = 1;
+	myself->status.active = true;
+	myself->status.reachable = true;
 	node_add(myself);
 
 	graph();
@@ -450,7 +440,7 @@ int setup_myself(void)
 	if(err || !ai) {
 		logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo",
 			   gai_strerror(err));
-		return -1;
+		return false;
 	}
 
 	listen_sockets = 0;
@@ -484,16 +474,16 @@ int setup_myself(void)
 		logger(LOG_NOTICE, _("Ready"));
 	else {
 		logger(LOG_ERR, _("Unable to create any listening socket!"));
-		return -1;
+		return false;
 	}
 
-	return 0;
+	return true;
 }
 
 /*
   setup all initial network connections
 */
-int setup_network_connections(void)
+bool setup_network_connections(void)
 {
 	char *envp[5];
 	int i;
@@ -516,11 +506,11 @@ int setup_network_connections(void)
 	} else
 		pingtimeout = 60;
 
-	if(setup_device() < 0)
-		return -1;
+	if(!setup_device())
+		return false;
 
-	if(setup_myself() < 0)
-		return -1;
+	if(!setup_myself())
+		return false;
 
 	/* Run tinc-up script to further initialize the tap interface */
 	asprintf(&envp[0], "NETNAME=%s", netname ? : "");
@@ -536,7 +526,7 @@ int setup_network_connections(void)
 
 	try_outgoing_connections();
 
-	return 0;
+	return true;
 }
 
 /*
@@ -557,11 +547,11 @@ void close_network_connections(void)
 
 		if(c->outgoing)
 			free(c->outgoing->name), free(c->outgoing), c->outgoing = NULL;
-		terminate_connection(c, 0);
+		terminate_connection(c, false);
 	}
 
 	if(myself && myself->connection)
-		terminate_connection(myself->connection, 0);
+		terminate_connection(myself->connection, false);
 
 	for(i = 0; i < listen_sockets; i++) {
 		close(listen_socket[i].tcp);
diff --git a/src/net_socket.c b/src/net_socket.c
index 82875bba..98f5d1a2 100644
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_socket.c,v 1.1.2.29 2003/07/18 13:45:06 guus Exp $
+    $Id: net_socket.c,v 1.1.2.30 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -221,7 +221,7 @@ begin:
 		if(!c->outgoing->cfg) {
 			ifdebug(CONNECTIONS) logger(LOG_ERR, _("Could not set up a meta connection to %s"),
 					   c->name);
-			c->status.remove = 1;
+			c->status.remove = true;
 			retry_outgoing(c->outgoing);
 			return;
 		}
@@ -292,7 +292,7 @@ begin:
 
 	if(result == -1) {
 		if(errno == EINPROGRESS) {
-			c->status.connecting = 1;
+			c->status.connecting = true;
 			return;
 		}
 
@@ -357,7 +357,7 @@ void setup_outgoing_connection(outgoing_t *outgoing)
   accept a new tcp connect and create a
   new connection
 */
-int handle_new_meta_connection(int sock)
+bool handle_new_meta_connection(int sock)
 {
 	connection_t *c;
 	sockaddr_t sa;
@@ -370,7 +370,7 @@ int handle_new_meta_connection(int sock)
 	if(fd < 0) {
 		logger(LOG_ERR, _("Accepting a new connection failed: %s"),
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	sockaddrunmap(&sa);
@@ -393,7 +393,7 @@ int handle_new_meta_connection(int sock)
 	c->allow_request = ID;
 	send_id(c);
 
-	return 0;
+	return true;
 }
 
 void try_outgoing_connections(void)
@@ -408,7 +408,7 @@ void try_outgoing_connections(void)
 		cfg = lookup_config_next(config_tree, cfg)) {
 		get_config_string(cfg, &name);
 
-		if(check_id(name)) {
+		if(!check_id(name)) {
 			logger(LOG_ERR,
 				   _("Invalid name for outgoing connection in %s line %d"),
 				   cfg->file, cfg->line);
diff --git a/src/netbsd/device.c b/src/netbsd/device.c
index 0064fdef..d0998339 100644
--- a/src/netbsd/device.c
+++ b/src/netbsd/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.11 2003/07/18 13:41:36 guus Exp $
+    $Id: device.c,v 1.1.2.12 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "system.h"
@@ -33,7 +33,6 @@
 #define DEVICE_TYPE_TUNTAP 1
 
 int device_fd = -1;
-int device_type;
 char *device;
 char *iface;
 char *device_info;
@@ -41,7 +40,7 @@ char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	cp();
 
@@ -52,14 +51,14 @@ int setup_device(void)
 		iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
 	if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_info = _("NetBSD tun device");
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -69,7 +68,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -78,7 +77,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	packet->data[12] = 0x08;
@@ -92,10 +91,10 @@ int read_packet(vpn_packet_t *packet)
 			   device_info);
 	}
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -105,10 +104,12 @@ int write_packet(vpn_packet_t *packet)
 	if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
 		logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
+
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/netutl.c b/src/netutl.c
index 6784833d..0d34d8d6 100644
--- a/src/netutl.c
+++ b/src/netutl.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: netutl.c,v 1.12.4.47 2003/07/17 15:06:26 guus Exp $
+    $Id: netutl.c,v 1.12.4.48 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -28,7 +28,7 @@
 #include "utils.h"
 #include "xalloc.h"
 
-int hostnames = 0;
+bool hostnames = false;
 
 /*
   Turn a string into a struct addrinfo.
@@ -244,7 +244,7 @@ void maskcpy(void *va, void *vb, int masklen, int len)
 		a[i] = 0;
 }
 
-int maskcheck(void *va, int masklen, int len)
+bool maskcheck(void *va, int masklen, int len)
 {
 	int i;
 	char *a = va;
@@ -255,11 +255,11 @@ int maskcheck(void *va, int masklen, int len)
 	masklen %= 8;
 
 	if(masklen && a[i++] & (0xff >> masklen))
-		return -1;
+		return false;
 
 	for(; i < len; i++)
 		if(a[i] != 0)
-			return -2;
+			return false;
 
-	return 0;
+	return true;
 }
diff --git a/src/netutl.h b/src/netutl.h
index eb5aeebc..66a7c972 100644
--- a/src/netutl.h
+++ b/src/netutl.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: netutl.h,v 1.2.4.16 2003/07/17 15:06:26 guus Exp $
+    $Id: netutl.h,v 1.2.4.17 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_NETUTL_H__
@@ -25,7 +25,7 @@
 
 #include "net.h"
 
-extern int hostnames;
+extern bool hostnames;
 
 extern struct addrinfo *str2addrinfo(char *, char *, int);
 extern sockaddr_t str2sockaddr(char *, char *);
@@ -36,6 +36,6 @@ extern void sockaddrunmap(sockaddr_t *);
 extern int maskcmp(void *, void *, int, int);
 extern void maskcpy(void *, void *, int, int);
 extern void mask(void *, int, int);
-extern int maskcheck(void *, int, int);
+extern bool maskcheck(void *, int, int);
 
 #endif							/* __TINC_NETUTL_H__ */
diff --git a/src/node.h b/src/node.h
index a4e439a7..3dd112e6 100644
--- a/src/node.h
+++ b/src/node.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: node.h,v 1.1.2.25 2003/07/17 15:06:26 guus Exp $
+    $Id: node.h,v 1.1.2.26 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_NODE_H__
@@ -45,7 +45,7 @@ typedef struct node_t {
 	sockaddr_t address;			/* his real (internet) ip to send UDP packets to */
 	char *hostname;				/* the hostname of its real ip */
 
-	struct node_status_t status;
+	node_status_t status;
 
 	const EVP_CIPHER *cipher;	/* Cipher type for UDP packets */
 	char *key;					/* Cipher key and iv */
diff --git a/src/openbsd/device.c b/src/openbsd/device.c
index 9af2e3e3..e7670300 100644
--- a/src/openbsd/device.c
+++ b/src/openbsd/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.16 2003/07/18 13:41:36 guus Exp $
+    $Id: device.c,v 1.1.2.17 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "system.h"
@@ -33,7 +33,6 @@
 #define DEVICE_TYPE_TUNTAP 1
 
 int device_fd = -1;
-int device_type;
 char *device;
 char *iface;
 char *device_info;
@@ -41,7 +40,7 @@ char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	cp();
 
@@ -52,14 +51,14 @@ int setup_device(void)
 		iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
 	if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_info = _("OpenBSD tun device");
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -69,7 +68,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 	u_int32_t type;
@@ -80,7 +79,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = readv(device_fd, vector, 2)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	switch (ntohl(type)) {
@@ -98,7 +97,7 @@ int read_packet(vpn_packet_t *packet)
 			ifdebug(TRAFFIC) logger(LOG_ERR,
 				           _ ("Unknown address family %d while reading packet from %s %s"),
 				           ntohl(type), device_info, device);
-		        return -1;
+		        return false;
 	}
 
 	packet->len = lenin + 10;
@@ -109,10 +108,10 @@ int read_packet(vpn_packet_t *packet)
 			   device_info);
 	}
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	u_int32_t type;
 	struct iovec vector[2];
@@ -136,7 +135,7 @@ int write_packet(vpn_packet_t *packet)
 		ifdebug(TRAFFIC) logger(LOG_ERR,
 				   _("Unknown address family %d while writing packet to %s %s"),
 				   af, device_info, device);
-		return -1;
+		return false;
 	}
 
 	vector[0].iov_base = &type;
@@ -147,10 +146,12 @@ int write_packet(vpn_packet_t *packet)
 	if(writev(device_fd, vector, 2) < 0) {
 		logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
+
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/process.c b/src/process.c
index 9a918158..218df760 100644
--- a/src/process.c
+++ b/src/process.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: process.c,v 1.1.2.56 2003/07/21 14:47:43 guus Exp $
+    $Id: process.c,v 1.1.2.57 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -35,21 +35,19 @@
 #include "xalloc.h"
 
 /* If zero, don't detach from the terminal. */
-int do_detach = 1;
+bool do_detach = true;
+bool sighup = false;
+bool sigalrm = false;
 
 extern char *identname;
 extern char *pidfilename;
 extern char **g_argv;
-extern int use_logfile;
+extern bool use_logfile;
 
 sigset_t emptysigset;
 
 static int saved_debug_level = -1;
 
-extern int sighup;
-extern int sigalrm;
-extern int do_purge;
-
 static void memory_full(int size)
 {
 	logger(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), size);
@@ -93,7 +91,7 @@ void cleanup_and_exit(int c)
 /*
   check for an existing tinc for this net, and write pid to pidfile
 */
-static int write_pidfile(void)
+static bool write_pidfile(void)
 {
 	int pid;
 
@@ -107,20 +105,20 @@ static int write_pidfile(void)
 					netname, pid);
 		else
 			fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
-		return 1;
+		return false;
 	}
 
 	/* if it's locked, write-protected, or whatever */
 	if(!write_pid(pidfilename))
-		return 1;
+		return false;
 
-	return 0;
+	return true;
 }
 
 /*
   kill older tincd for this net
 */
-int kill_other(int signal)
+bool kill_other(int signal)
 {
 	int pid;
 
@@ -134,7 +132,7 @@ int kill_other(int signal)
 					netname);
 		else
 			fprintf(stderr, _("No other tincd is running.\n"));
-		return 1;
+		return false;
 	}
 
 	errno = 0;					/* No error, sometimes errno is only changed on error */
@@ -151,13 +149,13 @@ int kill_other(int signal)
 		remove_pid(pidfilename);
 	}
 
-	return 0;
+	return true;
 }
 
 /*
   Detach from current terminal, write pidfile, kill parent
 */
-int detach(void)
+bool detach(void)
 {
 	cp();
 
@@ -165,24 +163,24 @@ int detach(void)
 
 	/* First check if we can open a fresh new pidfile */
 
-	if(write_pidfile())
-		return -1;
+	if(!write_pidfile())
+		return false;
 
 	/* If we succeeded in doing that, detach */
 
 	closelogger();
 
 	if(do_detach) {
-		if(daemon(0, 0) < 0) {
+		if(daemon(0, 0)) {
 			fprintf(stderr, _("Couldn't detach from terminal: %s"),
 					strerror(errno));
-			return -1;
+			return false;
 		}
 
 		/* Now UPDATE the pid in the pidfile, because we changed it... */
 
 		if(!write_pid(pidfilename))
-			return -1;
+			return false;
 	}
 
 	openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
@@ -192,7 +190,7 @@ int detach(void)
 
 	xalloc_fail_func = memory_full;
 
-	return 0;
+	return true;
 }
 
 /*
@@ -230,7 +228,7 @@ static void _execute_script(const char *scriptname, char **envp)
 /*
   Fork and execute the program pointed to by name.
 */
-int execute_script(const char *name, char **envp)
+bool execute_script(const char *name, char **envp)
 {
 	pid_t pid;
 	int status;
@@ -244,14 +242,14 @@ int execute_script(const char *name, char **envp)
 	/* First check if there is a script */
 
 	if(stat(scriptname, &s))
-		return 0;
+		return true;
 
 	pid = fork();
 
 	if(pid < 0) {
 		logger(LOG_ERR, _("System call `%s' failed: %s"), "fork",
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(pid) {
@@ -264,26 +262,26 @@ int execute_script(const char *name, char **envp)
 				if(WEXITSTATUS(status)) {
 					logger(LOG_ERR, _("Process %d (%s) exited with non-zero status %d"),
 						   pid, name, WEXITSTATUS(status));
-					return -1;
+					return false;
 				} else
-					return 0;
+					return true;
 			} else if(WIFSIGNALED(status)) {	/* Child was killed by a signal */
 				logger(LOG_ERR, _("Process %d (%s) was killed by signal %d (%s)"), pid,
 					   name, WTERMSIG(status), strsignal(WTERMSIG(status)));
-				return -1;
+				return false;
 			} else {			/* Something strange happened */
 				logger(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid,
 					   name);
-				return -1;
+				return false;
 			}
 		} else if (errno != EINTR) {
 			logger(LOG_ERR, _("System call `%s' failed: %s"), "waitpid",
 				   strerror(errno));
-			return -1;
+			return false;
 		}
 
 		/* Why do we get EINTR? */
-		return 0;
+		return true;
 	}
 
 	/* Child here */
@@ -344,7 +342,7 @@ static RETSIGTYPE fatal_signal_handler(int a)
 static RETSIGTYPE sighup_handler(int a)
 {
 	logger(LOG_NOTICE, _("Got HUP signal"));
-	sighup = 1;
+	sighup = true;
 }
 
 static RETSIGTYPE sigint_handler(int a)
@@ -366,7 +364,7 @@ static RETSIGTYPE sigint_handler(int a)
 static RETSIGTYPE sigalrm_handler(int a)
 {
 	logger(LOG_NOTICE, _("Got ALRM signal"));
-	sigalrm = 1;
+	sigalrm = true;
 }
 
 static RETSIGTYPE sigusr1_handler(int a)
@@ -384,8 +382,7 @@ static RETSIGTYPE sigusr2_handler(int a)
 
 static RETSIGTYPE sigwinch_handler(int a)
 {
-	extern int do_purge;
-	do_purge = 1;
+	do_purge = true;
 }
 
 static RETSIGTYPE unexpected_signal_handler(int a)
@@ -403,21 +400,20 @@ static struct {
 	int signal;
 	void (*handler)(int);
 } sighandlers[] = {
-	{
-	SIGHUP, sighup_handler}, {
-	SIGTERM, sigterm_handler}, {
-	SIGQUIT, sigquit_handler}, {
-	SIGSEGV, fatal_signal_handler}, {
-	SIGBUS, fatal_signal_handler}, {
-	SIGILL, fatal_signal_handler}, {
-	SIGPIPE, ignore_signal_handler}, {
-	SIGINT, sigint_handler}, {
-	SIGUSR1, sigusr1_handler}, {
-	SIGUSR2, sigusr2_handler}, {
-	SIGCHLD, ignore_signal_handler}, {
-	SIGALRM, sigalrm_handler}, {
-	SIGWINCH, sigwinch_handler}, {
-	0, NULL}
+	{SIGHUP, sighup_handler},
+	{SIGTERM, sigterm_handler},
+	{SIGQUIT, sigquit_handler},
+	{SIGSEGV, fatal_signal_handler},
+	{SIGBUS, fatal_signal_handler},
+	{SIGILL, fatal_signal_handler},
+	{SIGPIPE, ignore_signal_handler},
+	{SIGINT, sigint_handler},
+	{SIGUSR1, sigusr1_handler},
+	{SIGUSR2, sigusr2_handler},
+	{SIGCHLD, ignore_signal_handler},
+	{SIGALRM, sigalrm_handler},
+	{SIGWINCH, sigwinch_handler},
+	{0, NULL}
 };
 
 void setup_signals(void)
diff --git a/src/process.h b/src/process.h
index cb5f7c7c..9b0b123f 100644
--- a/src/process.h
+++ b/src/process.h
@@ -17,18 +17,20 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: process.h,v 1.1.2.16 2003/07/17 15:06:26 guus Exp $
+    $Id: process.h,v 1.1.2.17 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_PROCESS_H__
 #define __TINC_PROCESS_H__
 
-extern int do_detach;
+extern bool do_detach;
+extern bool sighup;
+extern bool sigalrm;
 
 extern void setup_signals(void);
-extern int execute_script(const char *, char **);
-extern int detach(void);
-extern int kill_other(int);
+extern bool execute_script(const char *, char **);
+extern bool detach(void);
+extern bool kill_other(int);
 extern void cleanup_and_exit(int) __attribute__ ((noreturn));
 
 #endif							/* __TINC_PROCESS_H__ */
diff --git a/src/protocol.c b/src/protocol.c
index 47cc9487..ad7c57d7 100644
--- a/src/protocol.c
+++ b/src/protocol.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol.c,v 1.28.4.141 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol.c,v 1.28.4.142 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -32,7 +32,7 @@
 
 /* Jumptable for the request handlers */
 
-static int (*request_handlers[])(connection_t *) = {
+static bool (*request_handlers[])(connection_t *) = {
 		id_h, metakey_h, challenge_h, chal_reply_h, ack_h,
 		status_h, error_h, termreq_h,
 		ping_h, pong_h,
@@ -53,21 +53,21 @@ static char (*request_name[]) = {
 
 static avl_tree_t *past_request_tree;
 
-int check_id(char *id)
+bool check_id(char *id)
 {
 	int i;
 
 	for(i = 0; i < strlen(id); i++)
 		if(!isalnum(id[i]) && id[i] != '_')
-			return -1;
+			return false;
 
-	return 0;
+	return true;
 }
 
 /* Generic request routines - takes care of logging and error
    detection as well */
 
-int send_request(connection_t *c, const char *format, ...)
+bool send_request(connection_t *c, const char *format, ...)
 {
 	va_list args;
 	char buffer[MAXBUFSIZE];
@@ -86,7 +86,7 @@ int send_request(connection_t *c, const char *format, ...)
 	if(len < 0 || len > MAXBUFSIZE - 1) {
 		logger(LOG_ERR, _("Output buffer overflow while sending request to %s (%s)"),
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	ifdebug(PROTOCOL) {
@@ -101,16 +101,16 @@ int send_request(connection_t *c, const char *format, ...)
 
 	buffer[len++] = '\n';
 
-	if(c == broadcast)
-		return broadcast_meta(NULL, buffer, len);
-	else
+	if(c == broadcast) {
+		broadcast_meta(NULL, buffer, len);
+		return true;
+	} else
 		return send_meta(c, buffer, len);
 }
 
-int forward_request(connection_t *from)
+void forward_request(connection_t *from)
 {
 	int request;
-	cp();
 
 	cp();
 
@@ -127,10 +127,10 @@ int forward_request(connection_t *from)
 
 	from->buffer[from->reqlen - 1] = '\n';
 
-	return broadcast_meta(from, from->buffer, from->reqlen);
+	broadcast_meta(from, from->buffer, from->reqlen);
 }
 
-int receive_request(connection_t *c)
+bool receive_request(connection_t *c)
 {
 	int request;
 
@@ -145,7 +145,7 @@ int receive_request(connection_t *c)
 				logger(LOG_ERR, _("Unknown request from %s (%s)"),
 					   c->name, c->hostname);
 
-			return -1;
+			return false;
 		} else {
 			ifdebug(PROTOCOL) {
 				ifdebug(META)
@@ -161,23 +161,23 @@ int receive_request(connection_t *c)
 		if((c->allow_request != ALL) && (c->allow_request != request)) {
 			logger(LOG_ERR, _("Unauthorized request from %s (%s)"), c->name,
 				   c->hostname);
-			return -1;
+			return false;
 		}
 
-		if(request_handlers[request] (c))
+		if(!request_handlers[request](c)) {
 			/* Something went wrong. Probably scriptkiddies. Terminate. */
-		{
+
 			logger(LOG_ERR, _("Error while processing %s from %s (%s)"),
 				   request_name[request], c->name, c->hostname);
-			return -1;
+			return false;
 		}
 	} else {
 		logger(LOG_ERR, _("Bogus data received from %s (%s)"),
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
-	return 0;
+	return true;
 }
 
 static int past_request_compare(past_request_t *a, past_request_t *b)
@@ -209,7 +209,7 @@ void exit_requests(void)
 	avl_delete_tree(past_request_tree);
 }
 
-int seen_request(char *request)
+bool seen_request(char *request)
 {
 	past_request_t p, *new;
 
@@ -219,13 +219,13 @@ int seen_request(char *request)
 
 	if(avl_search(past_request_tree, &p)) {
 		ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Already seen request"));
-		return 1;
+		return true;
 	} else {
 		new = (past_request_t *) xmalloc(sizeof(*new));
 		new->request = xstrdup(request);
 		new->firstseen = now;
 		avl_insert(past_request_tree, new);
-		return 0;
+		return false;
 	}
 }
 
diff --git a/src/protocol.h b/src/protocol.h
index 6f01a76c..132a8e6e 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -17,17 +17,12 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol.h,v 1.5.4.39 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol.h,v 1.5.4.40 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_PROTOCOL_H__
 #define __TINC_PROTOCOL_H__
 
-#include "edge.h"
-#include "net.h"
-#include "node.h"
-#include "subnet.h"
-
 /* Protocol version. Different versions are incompatible,
    incompatible version have different protocols.
  */
@@ -36,7 +31,7 @@
 
 /* Request numbers */
 
-enum {
+typedef enum request_t {
 	ALL = -1,					/* Guardian for allow_request */
 	ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK,
 	STATUS, ERROR, TERMREQ,
@@ -46,7 +41,7 @@ enum {
 	KEY_CHANGED, REQ_KEY, ANS_KEY,
 	PACKET,
 	LAST						/* Guardian for the highest request number */
-};
+} request_t;
 
 typedef struct past_request_t {
 	char *request;
@@ -58,58 +53,63 @@ typedef struct past_request_t {
 #define MAX_STRING_SIZE 2048
 #define MAX_STRING "%2048s"
 
+#include "edge.h"
+#include "net.h"
+#include "node.h"
+#include "subnet.h"
+
 /* Basic functions */
 
-extern int send_request(connection_t *, const char *, ...) __attribute__ ((format(printf, 2, 3)));
-extern int forward_request(connection_t *);
-extern int receive_request(connection_t *);
-extern int check_id(char *);
+extern bool send_request(struct connection_t *, const char *, ...) __attribute__ ((format(printf, 2, 3)));
+extern void forward_request(struct connection_t *);
+extern bool receive_request(struct connection_t *);
+extern bool check_id(char *);
 
 extern void init_requests(void);
 extern void exit_requests(void);
-extern int seen_request(char *);
+extern bool seen_request(char *);
 extern void age_past_requests(void);
 
 /* Requests */
 
-extern int send_id(connection_t *);
-extern int send_metakey(connection_t *);
-extern int send_challenge(connection_t *);
-extern int send_chal_reply(connection_t *);
-extern int send_ack(connection_t *);
-extern int send_status(connection_t *, int, char *);
-extern int send_error(connection_t *, int, char *);
-extern int send_termreq(connection_t *);
-extern int send_ping(connection_t *);
-extern int send_pong(connection_t *);
-extern int send_add_subnet(connection_t *, subnet_t *);
-extern int send_del_subnet(connection_t *, subnet_t *);
-extern int send_add_edge(connection_t *, edge_t *);
-extern int send_del_edge(connection_t *, edge_t *);
-extern int send_key_changed(connection_t *, node_t *);
-extern int send_req_key(connection_t *, node_t *, node_t *);
-extern int send_ans_key(connection_t *, node_t *, node_t *);
-extern int send_tcppacket(connection_t *, vpn_packet_t *);
+extern bool send_id(struct connection_t *);
+extern bool send_metakey(struct connection_t *);
+extern bool send_challenge(struct connection_t *);
+extern bool send_chal_reply(struct connection_t *);
+extern bool send_ack(struct connection_t *);
+extern bool send_status(struct connection_t *, int, char *);
+extern bool send_error(struct connection_t *, int, char *);
+extern bool send_termreq(struct connection_t *);
+extern bool send_ping(struct connection_t *);
+extern bool send_pong(struct connection_t *);
+extern bool send_add_subnet(struct connection_t *, struct subnet_t *);
+extern bool send_del_subnet(struct connection_t *, struct subnet_t *);
+extern bool send_add_edge(struct connection_t *, struct edge_t *);
+extern bool send_del_edge(struct connection_t *, struct edge_t *);
+extern bool send_key_changed(struct connection_t *, struct node_t *);
+extern bool send_req_key(struct connection_t *, struct node_t *, struct node_t *);
+extern bool send_ans_key(struct connection_t *, struct node_t *, struct node_t *);
+extern bool send_tcppacket(struct connection_t *, struct vpn_packet_t *);
 
 /* Request handlers  */
 
-extern int id_h(connection_t *);
-extern int metakey_h(connection_t *);
-extern int challenge_h(connection_t *);
-extern int chal_reply_h(connection_t *);
-extern int ack_h(connection_t *);
-extern int status_h(connection_t *);
-extern int error_h(connection_t *);
-extern int termreq_h(connection_t *);
-extern int ping_h(connection_t *);
-extern int pong_h(connection_t *);
-extern int add_subnet_h(connection_t *);
-extern int del_subnet_h(connection_t *);
-extern int add_edge_h(connection_t *);
-extern int del_edge_h(connection_t *);
-extern int key_changed_h(connection_t *);
-extern int req_key_h(connection_t *);
-extern int ans_key_h(connection_t *);
-extern int tcppacket_h(connection_t *);
+extern bool id_h(struct connection_t *);
+extern bool metakey_h(struct connection_t *);
+extern bool challenge_h(struct connection_t *);
+extern bool chal_reply_h(struct connection_t *);
+extern bool ack_h(struct connection_t *);
+extern bool status_h(struct connection_t *);
+extern bool error_h(struct connection_t *);
+extern bool termreq_h(struct connection_t *);
+extern bool ping_h(struct connection_t *);
+extern bool pong_h(struct connection_t *);
+extern bool add_subnet_h(struct connection_t *);
+extern bool del_subnet_h(struct connection_t *);
+extern bool add_edge_h(struct connection_t *);
+extern bool del_edge_h(struct connection_t *);
+extern bool key_changed_h(struct connection_t *);
+extern bool req_key_h(struct connection_t *);
+extern bool ans_key_h(struct connection_t *);
+extern bool tcppacket_h(struct connection_t *);
 
 #endif							/* __TINC_PROTOCOL_H__ */
diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 88fba266..d2962e72 100644
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_auth.c,v 1.1.4.24 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol_auth.c,v 1.1.4.25 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -39,7 +39,7 @@
 #include "utils.h"
 #include "xalloc.h"
 
-int send_id(connection_t *c)
+bool send_id(connection_t *c)
 {
 	cp();
 
@@ -47,25 +47,25 @@ int send_id(connection_t *c)
 						myself->connection->protocol_version);
 }
 
-int id_h(connection_t *c)
+bool id_h(connection_t *c)
 {
 	char name[MAX_STRING_SIZE];
-	int bla;
+	bool choice;
 
 	cp();
 
 	if(sscanf(c->buffer, "%*d " MAX_STRING " %d", name, &c->protocol_version) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ID", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if identity is a valid name */
 
-	if(check_id(name)) {
+	if(!check_id(name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ID", c->name,
 			   c->hostname, "invalid name");
-		return -1;
+		return false;
 	}
 
 	/* If we set c->name in advance, make sure we are connected to the right host */
@@ -74,7 +74,7 @@ int id_h(connection_t *c)
 		if(strcmp(c->name, name)) {
 			logger(LOG_ERR, _("Peer %s is %s instead of %s"), c->hostname, name,
 				   c->name);
-			return -1;
+			return false;
 		}
 	} else
 		c->name = xstrdup(name);
@@ -84,7 +84,7 @@ int id_h(connection_t *c)
 	if(c->protocol_version != myself->connection->protocol_version) {
 		logger(LOG_ERR, _("Peer %s (%s) uses incompatible version %d"),
 			   c->name, c->hostname, c->protocol_version);
-		return -1;
+		return false;
 	}
 
 	if(bypass_security) {
@@ -97,25 +97,23 @@ int id_h(connection_t *c)
 	if(!c->config_tree) {
 		init_configuration(&c->config_tree);
 
-		bla = read_connection_config(c);
-
-		if(bla) {
+		if(!read_connection_config(c)) {
 			logger(LOG_ERR, _("Peer %s had unknown identity (%s)"), c->hostname,
 				   c->name);
-			return -1;
+			return false;
 		}
 	}
 
-	if(read_rsa_public_key(c)) {
-		return -1;
+	if(!read_rsa_public_key(c)) {
+		return false;
 	}
 
 	/* Check some options */
 
-	if((get_config_bool(lookup_config(c->config_tree, "IndirectData"), &bla) && bla) || myself->options & OPTION_INDIRECT)
+	if((get_config_bool(lookup_config(c->config_tree, "IndirectData"), &choice) && choice) || myself->options & OPTION_INDIRECT)
 		c->options |= OPTION_INDIRECT;
 
-	if((get_config_bool(lookup_config(c->config_tree, "TCPOnly"), &bla) && bla) || myself->options & OPTION_TCPONLY)
+	if((get_config_bool(lookup_config(c->config_tree, "TCPOnly"), &choice) && choice) || myself->options & OPTION_TCPONLY)
 		c->options |= OPTION_TCPONLY | OPTION_INDIRECT;
 
 	c->allow_request = METAKEY;
@@ -123,10 +121,11 @@ int id_h(connection_t *c)
 	return send_metakey(c);
 }
 
-int send_metakey(connection_t *c)
+bool send_metakey(connection_t *c)
 {
 	char buffer[MAX_STRING_SIZE];
-	int len, x;
+	int len;
+	bool x;
 
 	cp();
 
@@ -173,7 +172,7 @@ int send_metakey(connection_t *c)
 	if(RSA_public_encrypt(len, c->outkey, buffer, c->rsa_key, RSA_NO_PADDING) != len) {
 		logger(LOG_ERR, _("Error during encryption of meta key for %s (%s)"),
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Convert the encrypted random data to a hexadecimal formatted string */
@@ -196,13 +195,13 @@ int send_metakey(connection_t *c)
 						c->outkey + len - c->outcipher->key_len -
 						c->outcipher->iv_len);
 
-		c->status.encryptout = 1;
+		c->status.encryptout = true;
 	}
 
 	return x;
 }
 
-int metakey_h(connection_t *c)
+bool metakey_h(connection_t *c)
 {
 	char buffer[MAX_STRING_SIZE];
 	int cipher, digest, maclength, compression;
@@ -213,7 +212,7 @@ int metakey_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %d %d %d %d " MAX_STRING, &cipher, &digest, &maclength, &compression, buffer) != 5) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "METAKEY", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	len = RSA_size(myself->connection->rsa_key);
@@ -222,7 +221,7 @@ int metakey_h(connection_t *c)
 
 	if(strlen(buffer) != len * 2) {
 		logger(LOG_ERR, _("Possible intruder %s (%s): %s"), c->name, c->hostname, "wrong keylength");
-		return -1;
+		return false;
 	}
 
 	/* Allocate buffers for the meta key */
@@ -242,7 +241,7 @@ int metakey_h(connection_t *c)
 	if(RSA_private_decrypt(len, buffer, c->inkey, myself->connection->rsa_key, RSA_NO_PADDING) != len) {	/* See challenge() */
 		logger(LOG_ERR, _("Error during encryption of meta key for %s (%s)"),
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	ifdebug(SCARY_THINGS) {
@@ -260,7 +259,7 @@ int metakey_h(connection_t *c)
 		
 		if(!c->incipher) {
 			logger(LOG_ERR, _("%s (%s) uses unknown cipher!"), c->name, c->hostname);
-			return -1;
+			return false;
 		}
 
 		EVP_DecryptInit(c->inctx, c->incipher,
@@ -268,7 +267,7 @@ int metakey_h(connection_t *c)
 						c->inkey + len - c->incipher->key_len -
 						c->incipher->iv_len);
 
-		c->status.decryptin = 1;
+		c->status.decryptin = true;
 	} else {
 		c->incipher = NULL;
 	}
@@ -280,12 +279,12 @@ int metakey_h(connection_t *c)
 
 		if(!c->indigest) {
 			logger(LOG_ERR, _("Node %s (%s) uses unknown digest!"), c->name, c->hostname);
-			return -1;
+			return false;
 		}
 
 		if(c->inmaclength > c->indigest->md_size || c->inmaclength < 0) {
 			logger(LOG_ERR, _("%s (%s) uses bogus MAC length!"), c->name, c->hostname);
-			return -1;
+			return false;
 		}
 	} else {
 		c->indigest = NULL;
@@ -298,10 +297,10 @@ int metakey_h(connection_t *c)
 	return send_challenge(c);
 }
 
-int send_challenge(connection_t *c)
+bool send_challenge(connection_t *c)
 {
 	char buffer[MAX_STRING_SIZE];
-	int len, x;
+	int len;
 
 	cp();
 
@@ -325,12 +324,10 @@ int send_challenge(connection_t *c)
 
 	/* Send the challenge */
 
-	x = send_request(c, "%d %s", CHALLENGE, buffer);
-
-	return x;
+	return send_request(c, "%d %s", CHALLENGE, buffer);
 }
 
-int challenge_h(connection_t *c)
+bool challenge_h(connection_t *c)
 {
 	char buffer[MAX_STRING_SIZE];
 	int len;
@@ -340,7 +337,7 @@ int challenge_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d " MAX_STRING, buffer) != 1) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "CHALLENGE", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	len = RSA_size(myself->connection->rsa_key);
@@ -350,7 +347,7 @@ int challenge_h(connection_t *c)
 	if(strlen(buffer) != len * 2) {
 		logger(LOG_ERR, _("Possible intruder %s (%s): %s"), c->name,
 			   c->hostname, "wrong challenge length");
-		return -1;
+		return false;
 	}
 
 	/* Allocate buffers for the challenge */
@@ -369,7 +366,7 @@ int challenge_h(connection_t *c)
 	return send_chal_reply(c);
 }
 
-int send_chal_reply(connection_t *c)
+bool send_chal_reply(connection_t *c)
 {
 	char hash[EVP_MAX_MD_SIZE * 2 + 1];
 	EVP_MD_CTX ctx;
@@ -393,7 +390,7 @@ int send_chal_reply(connection_t *c)
 	return send_request(c, "%d %s", CHAL_REPLY, hash);
 }
 
-int chal_reply_h(connection_t *c)
+bool chal_reply_h(connection_t *c)
 {
 	char hishash[MAX_STRING_SIZE];
 	char myhash[EVP_MAX_MD_SIZE];
@@ -404,7 +401,7 @@ int chal_reply_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d " MAX_STRING, hishash) != 1) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "CHAL_REPLY", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if the length of the hash is all right */
@@ -412,7 +409,7 @@ int chal_reply_h(connection_t *c)
 	if(strlen(hishash) != c->outdigest->md_size * 2) {
 		logger(LOG_ERR, _("Possible intruder %s (%s): %s"), c->name,
 			   c->hostname, _("wrong challenge reply length"));
-		return -1;
+		return false;
 	}
 
 	/* Convert the hash to binary format */
@@ -437,7 +434,7 @@ int chal_reply_h(connection_t *c)
 			logger(LOG_DEBUG, _("Expected challenge reply: %s"), hishash);
 		}
 
-		return -1;
+		return false;
 	}
 
 	/* Identity has now been positively verified.
@@ -449,12 +446,11 @@ int chal_reply_h(connection_t *c)
 	return send_ack(c);
 }
 
-int send_ack(connection_t *c)
+bool send_ack(connection_t *c)
 {
 	/* ACK message contains rest of the information the other end needs
 	   to create node_t and edge_t structures. */
 
-	int x;
 	struct timeval now;
 
 	cp();
@@ -462,13 +458,9 @@ int send_ack(connection_t *c)
 	/* Estimate weight */
 
 	gettimeofday(&now, NULL);
-	c->estimated_weight =
-		(now.tv_sec - c->start.tv_sec) * 1000 + (now.tv_usec -
-												 c->start.tv_usec) / 1000;
-	x = send_request(c, "%d %s %d %lx", ACK, myport, c->estimated_weight,
-					 c->options);
+	c->estimated_weight = (now.tv_sec - c->start.tv_sec) * 1000 + (now.tv_usec - c->start.tv_usec) / 1000;
 
-	return x;
+	return send_request(c, "%d %s %d %lx", ACK, myport, c->estimated_weight, c->options);
 }
 
 static void send_everything(connection_t *c)
@@ -495,7 +487,7 @@ static void send_everything(connection_t *c)
 	}
 }
 
-int ack_h(connection_t *c)
+bool ack_h(connection_t *c)
 {
 	char hisport[MAX_STRING_SIZE];
 	char *hisaddress, *dummy;
@@ -508,7 +500,7 @@ int ack_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d " MAX_STRING " %d %lx", hisport, &weight, &options) != 3) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ACK", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if we already have a node_t for him */
@@ -524,7 +516,7 @@ int ack_h(connection_t *c)
 			/* Oh dear, we already have a connection to this node. */
 			ifdebug(CONNECTIONS) logger(LOG_DEBUG, _("Established a second connection with %s (%s), closing old connection"),
 					   n->name, n->hostname);
-			terminate_connection(n->connection, 0);
+			terminate_connection(n->connection, false);
 			/* Run graph algorithm to purge key and make sure up/down scripts are rerun with new IP addresses and stuff */
 			graph();
 		}
@@ -537,7 +529,7 @@ int ack_h(connection_t *c)
 	/* Activate this connection */
 
 	c->allow_request = ALL;
-	c->status.active = 1;
+	c->status.active = true;
 
 	ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection with %s (%s) activated"), c->name,
 			   c->hostname);
@@ -570,5 +562,5 @@ int ack_h(connection_t *c)
 
 	graph();
 
-	return 0;
+	return true;
 }
diff --git a/src/protocol_edge.c b/src/protocol_edge.c
index 75b49950..e1e2ca01 100644
--- a/src/protocol_edge.c
+++ b/src/protocol_edge.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_edge.c,v 1.1.4.18 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol_edge.c,v 1.1.4.19 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -36,9 +36,9 @@
 #include "utils.h"
 #include "xalloc.h"
 
-int send_add_edge(connection_t *c, edge_t *e)
+bool send_add_edge(connection_t *c, edge_t *e)
 {
-	int x;
+	bool x;
 	char *address, *port;
 
 	cp();
@@ -54,7 +54,7 @@ int send_add_edge(connection_t *c, edge_t *e)
 	return x;
 }
 
-int add_edge_h(connection_t *c)
+bool add_edge_h(connection_t *c)
 {
 	edge_t *e;
 	node_t *from, *to;
@@ -72,25 +72,25 @@ int add_edge_h(connection_t *c)
 			  from_name, to_name, to_address, to_port, &options, &weight) != 6) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_EDGE", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if names are valid */
 
-	if(check_id(from_name)) {
+	if(!check_id(from_name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
-	if(check_id(to_name)) {
+	if(!check_id(to_name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
 	if(seen_request(c->buffer))
-		return 0;
+		return true;
 
 	/* Lookup nodes */
 
@@ -124,7 +124,7 @@ int add_edge_h(connection_t *c)
 				ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not match existing entry"),
 						   "ADD_EDGE", c->name, c->hostname);
 				send_add_edge(c, e);
-				return 0;
+				return true;
 			} else {
 				ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not match existing entry"),
 						   "ADD_EDGE", c->name, c->hostname);
@@ -132,7 +132,7 @@ int add_edge_h(connection_t *c)
 				graph();
 			}
 		} else
-			return 0;
+			return true;
 	} else if(from == myself) {
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not exist"),
 				   "ADD_EDGE", c->name, c->hostname);
@@ -141,7 +141,7 @@ int add_edge_h(connection_t *c)
 		e->to = to;
 		send_del_edge(c, e);
 		free_edge(e);
-		return 0;
+		return true;
 	}
 
 	e = new_edge();
@@ -160,10 +160,10 @@ int add_edge_h(connection_t *c)
 
 	graph();
 
-	return 0;
+	return true;
 }
 
-int send_del_edge(connection_t *c, edge_t *e)
+bool send_del_edge(connection_t *c, edge_t *e)
 {
 	cp();
 
@@ -171,7 +171,7 @@ int send_del_edge(connection_t *c, edge_t *e)
 						e->from->name, e->to->name);
 }
 
-int del_edge_h(connection_t *c)
+bool del_edge_h(connection_t *c)
 {
 	edge_t *e;
 	char from_name[MAX_STRING_SIZE];
@@ -183,25 +183,25 @@ int del_edge_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING, from_name, to_name) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_EDGE", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if names are valid */
 
-	if(check_id(from_name)) {
+	if(!check_id(from_name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
-	if(check_id(to_name)) {
+	if(!check_id(to_name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
 	if(seen_request(c->buffer))
-		return 0;
+		return true;
 
 	/* Lookup nodes */
 
@@ -210,7 +210,7 @@ int del_edge_h(connection_t *c)
 	if(!from) {
 		ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
 				   "DEL_EDGE", c->name, c->hostname);
-		return 0;
+		return true;
 	}
 
 	to = lookup_node(to_name);
@@ -218,7 +218,7 @@ int del_edge_h(connection_t *c)
 	if(!to) {
 		ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
 				   "DEL_EDGE", c->name, c->hostname);
-		return 0;
+		return true;
 	}
 
 	/* Check if edge exists */
@@ -228,14 +228,14 @@ int del_edge_h(connection_t *c)
 	if(!e) {
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not appear in the edge tree"),
 				   "DEL_EDGE", c->name, c->hostname);
-		return 0;
+		return true;
 	}
 
 	if(e->from == myself) {
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself"),
 				   "DEL_EDGE", c->name, c->hostname);
 		send_add_edge(c, e);	/* Send back a correction */
-		return 0;
+		return true;
 	}
 
 	/* Tell the rest about the deleted edge */
@@ -250,5 +250,5 @@ int del_edge_h(connection_t *c)
 
 	graph();
 
-	return 0;
+	return true;
 }
diff --git a/src/protocol_key.c b/src/protocol_key.c
index 832b2af0..3b5cd467 100644
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_key.c,v 1.1.4.19 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol_key.c,v 1.1.4.20 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -32,9 +32,9 @@
 #include "utils.h"
 #include "xalloc.h"
 
-int mykeyused = 0;
+bool mykeyused = false;
 
-int send_key_changed(connection_t *c, node_t *n)
+bool send_key_changed(connection_t *c, node_t *n)
 {
 	cp();
 
@@ -43,12 +43,12 @@ int send_key_changed(connection_t *c, node_t *n)
 	 */
 
 	if(n == myself && !mykeyused)
-		return 0;
+		return true;
 
 	return send_request(c, "%d %lx %s", KEY_CHANGED, random(), n->name);
 }
 
-int key_changed_h(connection_t *c)
+bool key_changed_h(connection_t *c)
 {
 	char name[MAX_STRING_SIZE];
 	node_t *n;
@@ -58,38 +58,38 @@ int key_changed_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %*x " MAX_STRING, name) != 1) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "KEY_CHANGED",
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	if(seen_request(c->buffer))
-		return 0;
+		return true;
 
 	n = lookup_node(name);
 
 	if(!n) {
 		logger(LOG_ERR, _("Got %s from %s (%s) origin %s which does not exist"),
 			   "KEY_CHANGED", c->name, c->hostname, name);
-		return -1;
+		return false;
 	}
 
-	n->status.validkey = 0;
-	n->status.waitingforkey = 0;
+	n->status.validkey = false;
+	n->status.waitingforkey = false;
 
 	/* Tell the others */
 
 	forward_request(c);
 
-	return 0;
+	return true;
 }
 
-int send_req_key(connection_t *c, node_t *from, node_t *to)
+bool send_req_key(connection_t *c, node_t *from, node_t *to)
 {
 	cp();
 
 	return send_request(c, "%d %s %s", REQ_KEY, from->name, to->name);
 }
 
-int req_key_h(connection_t *c)
+bool req_key_h(connection_t *c)
 {
 	char from_name[MAX_STRING_SIZE];
 	char to_name[MAX_STRING_SIZE];
@@ -100,7 +100,7 @@ int req_key_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d " MAX_STRING " " MAX_STRING, from_name, to_name) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "REQ_KEY", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	from = lookup_node(from_name);
@@ -108,7 +108,7 @@ int req_key_h(connection_t *c)
 	if(!from) {
 		logger(LOG_ERR, _("Got %s from %s (%s) origin %s which does not exist in our connection list"),
 			   "REQ_KEY", c->name, c->hostname, from_name);
-		return -1;
+		return false;
 	}
 
 	to = lookup_node(to_name);
@@ -116,13 +116,13 @@ int req_key_h(connection_t *c)
 	if(!to) {
 		logger(LOG_ERR, _("Got %s from %s (%s) destination %s which does not exist in our connection list"),
 			   "REQ_KEY", c->name, c->hostname, to_name);
-		return -1;
+		return false;
 	}
 
 	/* Check if this key request is for us */
 
 	if(to == myself) {			/* Yes, send our own key back */
-		mykeyused = 1;
+		mykeyused = true;
 		from->received_seqno = 0;
 		memset(from->late, 0, sizeof(from->late));
 		send_ans_key(c, myself, from);
@@ -130,10 +130,10 @@ int req_key_h(connection_t *c)
 		send_req_key(to->nexthop->connection, from, to);
 	}
 
-	return 0;
+	return true;
 }
 
-int send_ans_key(connection_t *c, node_t *from, node_t *to)
+bool send_ans_key(connection_t *c, node_t *from, node_t *to)
 {
 	char key[MAX_STRING_SIZE];
 
@@ -149,7 +149,7 @@ int send_ans_key(connection_t *c, node_t *from, node_t *to)
 						from->compression);
 }
 
-int ans_key_h(connection_t *c)
+bool ans_key_h(connection_t *c)
 {
 	char from_name[MAX_STRING_SIZE];
 	char to_name[MAX_STRING_SIZE];
@@ -164,7 +164,7 @@ int ans_key_h(connection_t *c)
 		&compression) != 7) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ANS_KEY", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	from = lookup_node(from_name);
@@ -172,7 +172,7 @@ int ans_key_h(connection_t *c)
 	if(!from) {
 		logger(LOG_ERR, _("Got %s from %s (%s) origin %s which does not exist in our connection list"),
 			   "ANS_KEY", c->name, c->hostname, from_name);
-		return -1;
+		return false;
 	}
 
 	to = lookup_node(to_name);
@@ -180,7 +180,7 @@ int ans_key_h(connection_t *c)
 	if(!to) {
 		logger(LOG_ERR, _("Got %s from %s (%s) destination %s which does not exist in our connection list"),
 			   "ANS_KEY", c->name, c->hostname, to_name);
-		return -1;
+		return false;
 	}
 
 	/* Forward it if necessary */
@@ -199,8 +199,8 @@ int ans_key_h(connection_t *c)
 	hex2bin(from->key, from->key, from->keylength);
 	from->key[from->keylength] = '\0';
 
-	from->status.validkey = 1;
-	from->status.waitingforkey = 0;
+	from->status.validkey = true;
+	from->status.waitingforkey = false;
 	from->sent_seqno = 0;
 
 	/* Check and lookup cipher and digest algorithms */
@@ -211,13 +211,13 @@ int ans_key_h(connection_t *c)
 		if(!from->cipher) {
 			logger(LOG_ERR, _("Node %s (%s) uses unknown cipher!"), from->name,
 				   from->hostname);
-			return -1;
+			return false;
 		}
 
 		if(from->keylength != from->cipher->key_len + from->cipher->iv_len) {
 			logger(LOG_ERR, _("Node %s (%s) uses wrong keylength!"), from->name,
 				   from->hostname);
-			return -1;
+			return false;
 		}
 	} else {
 		from->cipher = NULL;
@@ -231,13 +231,13 @@ int ans_key_h(connection_t *c)
 		if(!from->digest) {
 			logger(LOG_ERR, _("Node %s (%s) uses unknown digest!"), from->name,
 				   from->hostname);
-			return -1;
+			return false;
 		}
 
 		if(from->maclength > from->digest->md_size || from->maclength < 0) {
 			logger(LOG_ERR, _("Node %s (%s) uses bogus MAC length!"),
 				   from->name, from->hostname);
-			return -1;
+			return false;
 		}
 	} else {
 		from->digest = NULL;
@@ -245,7 +245,7 @@ int ans_key_h(connection_t *c)
 
 	if(compression < 0 || compression > 11) {
 		logger(LOG_ERR, _("Node %s (%s) uses bogus compression level!"), from->name, from->hostname);
-		return -1;
+		return false;
 	}
 	
 	from->compression = compression;
@@ -254,5 +254,5 @@ int ans_key_h(connection_t *c)
 
 	flush_queue(from);
 
-	return 0;
+	return true;
 }
diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index 934a1820..25a86abe 100644
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_misc.c,v 1.1.4.11 2003/07/17 15:06:26 guus Exp $
+    $Id: protocol_misc.c,v 1.1.4.12 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -33,7 +33,7 @@
 
 /* Status and error notification routines */
 
-int send_status(connection_t *c, int statusno, char *statusstring)
+bool send_status(connection_t *c, int statusno, char *statusstring)
 {
 	cp();
 
@@ -43,7 +43,7 @@ int send_status(connection_t *c, int statusno, char *statusstring)
 	return send_request(c, "%d %d %s", STATUS, statusno, statusstring);
 }
 
-int status_h(connection_t *c)
+bool status_h(connection_t *c)
 {
 	int statusno;
 	char statusstring[MAX_STRING_SIZE];
@@ -53,16 +53,16 @@ int status_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "STATUS",
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	ifdebug(STATUS) logger(LOG_NOTICE, _("Status message from %s (%s): %d: %s"),
 			   c->name, c->hostname, statusno, statusstring);
 
-	return 0;
+	return true;
 }
 
-int send_error(connection_t *c, int err, char *errstring)
+bool send_error(connection_t *c, int err, char *errstring)
 {
 	cp();
 
@@ -72,7 +72,7 @@ int send_error(connection_t *c, int err, char *errstring)
 	return send_request(c, "%d %d %s", ERROR, err, errstring);
 }
 
-int error_h(connection_t *c)
+bool error_h(connection_t *c)
 {
 	int err;
 	char errorstring[MAX_STRING_SIZE];
@@ -82,7 +82,7 @@ int error_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %d " MAX_STRING, &err, errorstring) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ERROR",
 			   c->name, c->hostname);
-		return -1;
+		return false;
 	}
 
 	ifdebug(ERROR) logger(LOG_NOTICE, _("Error message from %s (%s): %d: %s"),
@@ -90,82 +90,78 @@ int error_h(connection_t *c)
 
 	terminate_connection(c, c->status.active);
 
-	return 0;
+	return true;
 }
 
-int send_termreq(connection_t *c)
+bool send_termreq(connection_t *c)
 {
 	cp();
 
 	return send_request(c, "%d", TERMREQ);
 }
 
-int termreq_h(connection_t *c)
+bool termreq_h(connection_t *c)
 {
 	cp();
 
 	terminate_connection(c, c->status.active);
 
-	return 0;
+	return true;
 }
 
-int send_ping(connection_t *c)
+bool send_ping(connection_t *c)
 {
 	cp();
 
-	c->status.pinged = 1;
+	c->status.pinged = true;
 	c->last_ping_time = now;
 
 	return send_request(c, "%d", PING);
 }
 
-int ping_h(connection_t *c)
+bool ping_h(connection_t *c)
 {
 	cp();
 
 	return send_pong(c);
 }
 
-int send_pong(connection_t *c)
+bool send_pong(connection_t *c)
 {
 	cp();
 
 	return send_request(c, "%d", PONG);
 }
 
-int pong_h(connection_t *c)
+bool pong_h(connection_t *c)
 {
 	cp();
 
-	c->status.pinged = 0;
+	c->status.pinged = false;
 
 	/* Succesful connection, reset timeout if this is an outgoing connection. */
 
 	if(c->outgoing)
 		c->outgoing->timeout = 0;
 
-	return 0;
+	return true;
 }
 
 /* Sending and receiving packets via TCP */
 
-int send_tcppacket(connection_t *c, vpn_packet_t *packet)
+bool send_tcppacket(connection_t *c, vpn_packet_t *packet)
 {
-	int x;
-
 	cp();
 
 	/* Evil hack. */
 
-	x = send_request(c, "%d %hd", PACKET, packet->len);
-
-	if(x)
-		return x;
+	if(!send_request(c, "%d %hd", PACKET, packet->len))
+		return false;
 
 	return send_meta(c, packet->data, packet->len);
 }
 
-int tcppacket_h(connection_t *c)
+bool tcppacket_h(connection_t *c)
 {
 	short int len;
 
@@ -174,12 +170,12 @@ int tcppacket_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %hd", &len) != 1) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "PACKET", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Set reqlen to len, this will tell receive_meta() that a tcppacket is coming. */
 
 	c->tcplen = len;
 
-	return 0;
+	return true;
 }
diff --git a/src/protocol_subnet.c b/src/protocol_subnet.c
index 79fbb417..48b5efef 100644
--- a/src/protocol_subnet.c
+++ b/src/protocol_subnet.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_subnet.c,v 1.1.4.13 2003/07/21 14:47:43 guus Exp $
+    $Id: protocol_subnet.c,v 1.1.4.14 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -33,9 +33,9 @@
 #include "utils.h"
 #include "xalloc.h"
 
-int send_add_subnet(connection_t *c, subnet_t *subnet)
+bool send_add_subnet(connection_t *c, subnet_t *subnet)
 {
-	int x;
+	bool x;
 	char *netstr;
 
 	cp();
@@ -48,7 +48,7 @@ int send_add_subnet(connection_t *c, subnet_t *subnet)
 	return x;
 }
 
-int add_subnet_h(connection_t *c)
+bool add_subnet_h(connection_t *c)
 {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
@@ -60,15 +60,15 @@ int add_subnet_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_SUBNET", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if owner name is a valid */
 
-	if(check_id(name)) {
+	if(!check_id(name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_SUBNET", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
 	/* Check if subnet string is valid */
@@ -78,11 +78,11 @@ int add_subnet_h(connection_t *c)
 	if(!s) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_SUBNET", c->name,
 			   c->hostname, _("invalid subnet string"));
-		return -1;
+		return false;
 	}
 
 	if(seen_request(c->buffer))
-		return 0;
+		return true;
 
 	/* Check if the owner of the new subnet is in the connection list */
 
@@ -98,7 +98,7 @@ int add_subnet_h(connection_t *c)
 
 	if(lookup_subnet(owner, s)) {
 		free_subnet(s);
-		return 0;
+		return true;
 	}
 
 	/* If we don't know this subnet, but we are the owner, retaliate with a DEL_SUBNET */
@@ -108,7 +108,7 @@ int add_subnet_h(connection_t *c)
 				   "ADD_SUBNET", c->name, c->hostname);
 		s->owner = myself;
 		send_del_subnet(c, s);
-		return 0;
+		return true;
 	}
 
 	/* If everything is correct, add the subnet to the list of the owner */
@@ -119,12 +119,12 @@ int add_subnet_h(connection_t *c)
 
 	forward_request(c);
 
-	return 0;
+	return true;
 }
 
-int send_del_subnet(connection_t *c, subnet_t *s)
+bool send_del_subnet(connection_t *c, subnet_t *s)
 {
-	int x;
+	bool x;
 	char *netstr;
 
 	cp();
@@ -138,7 +138,7 @@ int send_del_subnet(connection_t *c, subnet_t *s)
 	return x;
 }
 
-int del_subnet_h(connection_t *c)
+bool del_subnet_h(connection_t *c)
 {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
@@ -150,15 +150,15 @@ int del_subnet_h(connection_t *c)
 	if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_SUBNET", c->name,
 			   c->hostname);
-		return -1;
+		return false;
 	}
 
 	/* Check if owner name is a valid */
 
-	if(check_id(name)) {
+	if(!check_id(name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_SUBNET", c->name,
 			   c->hostname, _("invalid name"));
-		return -1;
+		return false;
 	}
 
 	/* Check if the owner of the new subnet is in the connection list */
@@ -168,7 +168,7 @@ int del_subnet_h(connection_t *c)
 	if(!owner) {
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for %s which is not in our node tree"),
 				   "DEL_SUBNET", c->name, c->hostname, name);
-		return 0;
+		return true;
 	}
 
 	/* Check if subnet string is valid */
@@ -178,11 +178,11 @@ int del_subnet_h(connection_t *c)
 	if(!s) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_SUBNET", c->name,
 			   c->hostname, _("invalid subnet string"));
-		return -1;
+		return false;
 	}
 
 	if(seen_request(c->buffer))
-		return 0;
+		return true;
 
 	/* If everything is correct, delete the subnet from the list of the owner */
 
@@ -195,7 +195,7 @@ int del_subnet_h(connection_t *c)
 	if(!find) {
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for %s which does not appear in his subnet tree"),
 				   "DEL_SUBNET", c->name, c->hostname, name);
-		return 0;
+		return true;
 	}
 
 	/* If we are the owner of this subnet, retaliate with an ADD_SUBNET */
@@ -204,7 +204,7 @@ int del_subnet_h(connection_t *c)
 		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself"),
 				   "DEL_SUBNET", c->name, c->hostname);
 		send_add_subnet(c, find);
-		return 0;
+		return true;
 	}
 
 	/* Tell the rest */
@@ -215,5 +215,5 @@ int del_subnet_h(connection_t *c)
 
 	subnet_del(owner, find);
 
-	return 0;
+	return true;
 }
diff --git a/src/raw_socket/device.c b/src/raw_socket/device.c
index 6a94ce38..77e0540d 100644
--- a/src/raw_socket/device.c
+++ b/src/raw_socket/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.7 2003/07/12 17:41:48 guus Exp $
+    $Id: device.c,v 1.1.2.8 2003/07/22 20:55:21 guus Exp $
 */
 
 #include "config.h"
@@ -43,7 +43,6 @@
 #include "system.h"
 
 int device_fd = -1;
-int device_type;
 char *device;
 char *interface;
 char ifrname[IFNAMSIZ];
@@ -52,7 +51,7 @@ char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	struct ifreq ifr;
 	struct sockaddr_ll sa;
@@ -71,7 +70,7 @@ int setup_device(void)
 	if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device_info,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	memset(&ifr, 0, sizeof(ifr));
@@ -80,7 +79,7 @@ int setup_device(void)
 		close(device_fd);
 		logger(LOG_ERR, _("Can't find interface %s: %s"), interface,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	memset(&sa, '0', sizeof(sa));
@@ -90,12 +89,12 @@ int setup_device(void)
 
 	if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
 		logger(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -105,7 +104,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -114,7 +113,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	packet->len = lenin;
@@ -125,10 +124,10 @@ int read_packet(vpn_packet_t *packet)
 			   device_info);
 	}
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -138,12 +137,12 @@ int write_packet(vpn_packet_t *packet)
 	if(write(device_fd, packet->data, packet->len) < 0) {
 		logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
 
-	return 0;
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/route.c b/src/route.c
index 323edec2..7dd7635f 100644
--- a/src/route.c
+++ b/src/route.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: route.c,v 1.1.2.61 2003/07/18 12:21:03 guus Exp $
+    $Id: route.c,v 1.1.2.62 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -54,10 +54,10 @@
 #include "subnet.h"
 #include "utils.h"
 
-int routing_mode = RMODE_ROUTER;
-int priorityinheritance = 0;
+rmode_t routing_mode = RMODE_ROUTER;
+bool priorityinheritance = false;
 int macexpire = 600;
-int overwrite_mac = 0;
+bool overwrite_mac = false;
 mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
 
 /* RFC 1071 */
@@ -81,14 +81,14 @@ static uint16_t inet_checksum(void *data, int len, uint16_t prevsum)
 	return ~checksum;
 }
 
-static int ratelimit(void) {
+static bool ratelimit(void) {
 	static time_t lasttime = 0;
 	
 	if(lasttime == now)
-		return 1;
+		return true;
 
 	lasttime = now;
-	return 0;
+	return false;
 }
 	
 static void learn_mac(mac_t *address)
diff --git a/src/route.h b/src/route.h
index 8daef5a4..6d1c034d 100644
--- a/src/route.h
+++ b/src/route.h
@@ -17,27 +17,30 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: route.h,v 1.1.2.12 2003/07/15 16:26:18 guus Exp $
+    $Id: route.h,v 1.1.2.13 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_ROUTE_H__
 #define __TINC_ROUTE_H__
 
-enum {
+#include "net.h"
+#include "node.h"
+
+typedef enum rmode_t {
 	RMODE_HUB = 0,
 	RMODE_SWITCH,
 	RMODE_ROUTER,
-};
+} rmode_t;
 
-extern int routing_mode;
-extern int overwrite_mac;
-extern int priorityinheritance;
+extern rmode_t routing_mode;
+extern bool overwrite_mac;
+extern bool priorityinheritance;
 extern int macexpire;
 
 extern mac_t mymac;
 
 extern void age_mac(void);
-extern void route_incoming(node_t *, vpn_packet_t *);
-extern void route_outgoing(vpn_packet_t *);
+extern void route_incoming(struct node_t *, struct vpn_packet_t *);
+extern void route_outgoing(struct vpn_packet_t *);
 
 #endif							/* __TINC_ROUTE_H__ */
diff --git a/src/solaris/device.c b/src/solaris/device.c
index 3cafa238..6b657273 100644
--- a/src/solaris/device.c
+++ b/src/solaris/device.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.15 2003/07/18 13:41:37 guus Exp $
+    $Id: device.c,v 1.1.2.16 2003/07/22 20:55:21 guus Exp $
 */
 
 
@@ -35,7 +35,6 @@
 #define DEFAULT_DEVICE "/dev/tun"
 
 int device_fd = -1;
-int device_type;
 char *device = NULL;
 char *iface = NULL;
 char ifrname[IFNAMSIZ];
@@ -44,7 +43,7 @@ char *device_info = NULL;
 int device_total_in = 0;
 int device_total_out = 0;
 
-int setup_device(void)
+bool setup_device(void)
 {
 	int ip_fd = -1, if_fd = -1;
 	int ppa;
@@ -57,7 +56,7 @@ int setup_device(void)
 
 	if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
 		logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	ppa = 0;
@@ -69,35 +68,35 @@ int setup_device(void)
 
 	if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
 		logger(LOG_ERR, _("Could not open /dev/ip: %s"), strerror(errno));
-		return -1;
+		return false;
 	}
 
 	/* Assign a new PPA and get its unit number. */
 	if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
 		logger(LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if((if_fd = open(device, O_RDWR, 0)) < 0) {
 		logger(LOG_ERR, _("Could not open %s twice: %s"), device,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(ioctl(if_fd, I_PUSH, "ip") < 0) {
 		logger(LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
-		return -1;
+		return false;
 	}
 
 	/* Assign ppa according to the unit number returned by tun device */
 	if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
 		logger(LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
 		logger(LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
-		return -1;
+		return false;
 	}
 
 	if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
@@ -107,7 +106,7 @@ int setup_device(void)
 
 	logger(LOG_INFO, _("%s is a %s"), device, device_info);
 
-	return 0;
+	return true;
 }
 
 void close_device(void)
@@ -117,7 +116,7 @@ void close_device(void)
 	close(device_fd);
 }
 
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
 {
 	int lenin;
 
@@ -126,7 +125,7 @@ int read_packet(vpn_packet_t *packet)
 	if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
 		logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
 			   device, strerror(errno));
-		return -1;
+		return false;
 	}
 
 	packet->data[12] = 0x08;
@@ -139,10 +138,10 @@ int read_packet(vpn_packet_t *packet)
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
 			   device_info);
 
-	return 0;
+	return true;
 }
 
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
 {
 	cp();
 
@@ -152,12 +151,12 @@ int write_packet(vpn_packet_t *packet)
 	if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
 		logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, packet->len,
 			   strerror(errno));
-		return -1;
+		return false;
 	}
 
 	device_total_out += packet->len;
 
-	return 0;
+	return true;
 }
 
 void dump_device_stats(void)
diff --git a/src/subnet.h b/src/subnet.h
index a7acbae0..7cb0e9bb 100644
--- a/src/subnet.h
+++ b/src/subnet.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: subnet.h,v 1.1.2.21 2003/07/06 23:16:29 guus Exp $
+    $Id: subnet.h,v 1.1.2.22 2003/07/22 20:55:20 guus Exp $
 */
 
 #ifndef __TINC_SUBNET_H__
@@ -25,12 +25,12 @@
 
 #include "net.h"
 
-enum {
+typedef enum subnet_type_t {
 	SUBNET_MAC = 0,
 	SUBNET_IPV4,
 	SUBNET_IPV6,
 	SUBNET_TYPES				/* Guardian */
-};
+} subnet_type_t;
 
 typedef struct subnet_mac_t {
 	mac_t address;
@@ -53,7 +53,7 @@ typedef struct subnet_t {
 	struct node_t *owner;		/* the owner of this subnet */
 	struct node_t *uplink;		/* the uplink which we should send packets to for this subnet */
 
-	int type;					/* subnet type (IPv4? IPv6? MAC? something even weirder?) */
+	subnet_type_t type;		/* subnet type (IPv4? IPv6? MAC? something even weirder?) */
 
 	/* And now for the actual subnet: */
 
diff --git a/src/tincd.c b/src/tincd.c
index e71c3211..b9f9f4f4 100644
--- a/src/tincd.c
+++ b/src/tincd.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: tincd.c,v 1.10.4.75 2003/07/22 12:58:34 guus Exp $
+    $Id: tincd.c,v 1.10.4.76 2003/07/22 20:55:20 guus Exp $
 */
 
 #include "system.h"
@@ -51,10 +51,10 @@
 char *program_name = NULL;
 
 /* If nonzero, display usage information and exit. */
-int show_help = 0;
+bool show_help = false;
 
 /* If nonzero, print the version on standard output and exit.  */
-int show_version = 0;
+bool show_version = false;
 
 /* If nonzero, it will attempt to kill a running tincd and exit. */
 int kill_tincd = 0;
@@ -63,40 +63,39 @@ int kill_tincd = 0;
 int generate_keys = 0;
 
 /* If nonzero, use null ciphers and skip all key exchanges. */
-int bypass_security = 0;
+bool bypass_security = false;
 
 /* If nonzero, disable swapping for this process. */
-int do_mlock = 0;
+bool do_mlock = false;
 
 /* If nonzero, write log entries to a separate file. */
-int use_logfile = 0;
+bool use_logfile = false;
 
 char *identname = NULL;				/* program name for syslog */
 char *pidfilename = NULL;			/* pid file location */
 char *logfilename = NULL;			/* log file location */
 char **g_argv;					/* a copy of the cmdline arguments */
-char **environment;				/* A pointer to the environment on
-								   startup */
+char **environment;				/* A pointer to the environment on startup */
 
 static struct option const long_options[] = {
 	{"config", required_argument, NULL, 'c'},
 	{"kill", optional_argument, NULL, 'k'},
 	{"net", required_argument, NULL, 'n'},
-	{"help", no_argument, &show_help, 1},
-	{"version", no_argument, &show_version, 1},
-	{"no-detach", no_argument, &do_detach, 0},
+	{"help", no_argument, NULL, 1},
+	{"version", no_argument, NULL, 2},
+	{"no-detach", no_argument, NULL, 'D'},
 	{"generate-keys", optional_argument, NULL, 'K'},
 	{"debug", optional_argument, NULL, 'd'},
-	{"bypass-security", no_argument, &bypass_security, 1},
-	{"mlock", no_argument, &do_mlock, 1},
-	{"logfile", optional_argument, NULL, 'F'},
-	{"pidfile", required_argument, NULL, 'P'},
+	{"bypass-security", no_argument, NULL, 3},
+	{"mlock", no_argument, NULL, 'L'},
+	{"logfile", optional_argument, NULL, 4},
+	{"pidfile", required_argument, NULL, 5},
 	{NULL, 0, NULL, 0}
 };
 
-static void usage(int status)
+static void usage(bool status)
 {
-	if(status != 0)
+	if(status)
 		fprintf(stderr, _("Try `%s --help\' for more information.\n"),
 				program_name);
 	else {
@@ -133,11 +132,11 @@ static void parse_options(int argc, char **argv, char **envp)
 				break;
 
 			case 'D':				/* no detach */
-				do_detach = 0;
+				do_detach = false;
 				break;
 
 			case 'L':				/* no detach */
-				do_mlock = 1;
+				do_mlock = true;
 				break;
 
 			case 'd':				/* inc debug level */
@@ -171,7 +170,7 @@ static void parse_options(int argc, char **argv, char **envp)
 						if(!kill_tincd) {
 							fprintf(stderr, _("Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n"),
 									optarg);
-							usage(1);
+							usage(true);
 						}
 					}
 				} else
@@ -189,7 +188,7 @@ static void parse_options(int argc, char **argv, char **envp)
 					if(generate_keys < 512) {
 						fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
 								optarg);
-						usage(1);
+						usage(true);
 					}
 
 					generate_keys &= ~7;	/* Round it to bytes */
@@ -197,18 +196,30 @@ static void parse_options(int argc, char **argv, char **envp)
 					generate_keys = 1024;
 				break;
 
-			case 'F':				/* write log entries to a file */
-				use_logfile = 1;
+			case 1:					/* show help */
+				show_help = true;
+				break;
+
+			case 2:					/* show version */
+				show_version = true;
+				break;
+
+			case 3:					/* bypass security */
+				bypass_security = true;
+				break;
+
+			case 4:					/* write log entries to a file */
+				use_logfile = true;
 				if(optarg)
 					logfilename = xstrdup(optarg);
 				break;
 
-			case 'P':				/* write PID to a file */
+			case 5:					/* write PID to a file */
 				pidfilename = xstrdup(optarg);
 				break;
 
 			case '?':
-				usage(1);
+				usage(true);
 
 			default:
 				break;
@@ -257,7 +268,7 @@ static void indicator(int a, int b, void *p)
   Generate a public/private RSA keypair, and ask for a file to store
   them in.
 */
-static int keygen(int bits)
+static bool keygen(int bits)
 {
 	RSA *rsa_key;
 	FILE *f;
@@ -269,43 +280,43 @@ static int keygen(int bits)
 
 	if(!rsa_key) {
 		fprintf(stderr, _("Error during key generation!\n"));
-		return -1;
+		return false;
 	} else
 		fprintf(stderr, _("Done.\n"));
 
-	get_config_string(lookup_config(config_tree, "Name"), &name);
-
-	if(name)
-		asprintf(&filename, "%s/hosts/%s", confbase, name);
-	else
-		asprintf(&filename, "%s/rsa_key.pub", confbase);
-
-	f = ask_and_safe_open(filename, _("public RSA key"), "a");
+	asprintf(&filename, "%s/rsa_key.priv", confbase);
+	f = ask_and_safe_open(filename, _("private RSA key"), true, "a");
 
 	if(!f)
-		return -1;
+		return false;
 
 	if(ftell(f))
 		fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
 
-	PEM_write_RSAPublicKey(f, rsa_key);
+	PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
 	fclose(f);
 	free(filename);
 
-	asprintf(&filename, "%s/rsa_key.priv", confbase);
-	f = ask_and_safe_open(filename, _("private RSA key"), "a");
+	get_config_string(lookup_config(config_tree, "Name"), &name);
+
+	if(name)
+		asprintf(&filename, "%s/hosts/%s", confbase, name);
+	else
+		asprintf(&filename, "%s/rsa_key.pub", confbase);
+
+	f = ask_and_safe_open(filename, _("public RSA key"), false, "a");
 
 	if(!f)
-		return -1;
+		return false;
 
 	if(ftell(f))
 		fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
 
-	PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
+	PEM_write_RSAPublicKey(f, rsa_key);
 	fclose(f);
 	free(filename);
 
-	return 0;
+	return true;
 }
 
 /*
@@ -360,10 +371,10 @@ int main(int argc, char **argv, char **envp)
 	}
 
 	if(show_help)
-		usage(0);
+		usage(false);
 
 	if(kill_tincd)
-		exit(kill_other(kill_tincd));
+		exit(!kill_other(kill_tincd));
 
 	openlogger("tinc", LOGMODE_STDERR);
 
@@ -393,10 +404,10 @@ int main(int argc, char **argv, char **envp)
 
 	if(generate_keys) {
 		read_server_config();
-		exit(keygen(generate_keys));
+		exit(!keygen(generate_keys));
 	}
 
-	if(read_server_config())
+	if(!read_server_config())
 		exit(1);
 
 	if(lzo_init() != LZO_E_OK) {
@@ -404,11 +415,11 @@ int main(int argc, char **argv, char **envp)
 		exit(1);
 	}
 
-	if(detach())
-		exit(0);
+	if(!detach())
+		exit(1);
 		
 	for(;;) {
-		if(!setup_network_connections()) {
+		if(setup_network_connections()) {
 			main_loop();
 			cleanup_and_exit(1);
 		}