diff --git a/ChangeLog b/ChangeLog
index 6903ce284..7d2766c01 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -53,6 +53,10 @@
    - itojun@cvs.openbsd.org 2001/12/05 03:50:01
      [clientloop.c serverloop.c sshd.c]
      deal with LP64 printf issue with sig_atomic_t.  from thorpej
+   - itojun@cvs.openbsd.org 2001/12/05 03:56:39
+     [auth1.c auth2.c canohost.c channels.c deattack.c packet.c scp.c 
+      sshconnect2.c]
+     make it compile with more strict prototype checking
 
 20011126
  - (tim) [contrib/cygwin/README, openbsd-compat/bsd-cygwin_util.c,
@@ -6975,4 +6979,4 @@
  - Wrote replacements for strlcpy and mkdtemp
  - Released 1.0pre1
 
-$Id: ChangeLog,v 1.1682 2001/12/06 17:52:16 mouring Exp $
+$Id: ChangeLog,v 1.1683 2001/12/06 17:55:26 mouring Exp $
diff --git a/auth1.c b/auth1.c
index 1fbfad90a..0e5e2e557 100644
--- a/auth1.c
+++ b/auth1.c
@@ -10,7 +10,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth1.c,v 1.25 2001/06/26 16:15:23 dugsong Exp $");
+RCSID("$OpenBSD: auth1.c,v 1.26 2001/12/05 03:56:39 itojun Exp $");
 
 #include "xmalloc.h"
 #include "rsa.h"
@@ -360,7 +360,7 @@ do_authloop(Authctxt *authctxt)
  * been exchanged and encryption is enabled.
  */
 void
-do_authentication()
+do_authentication(void)
 {
 	Authctxt *authctxt;
 	struct passwd *pw;
diff --git a/auth2.c b/auth2.c
index 14d212520..3cfba7a6a 100644
--- a/auth2.c
+++ b/auth2.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth2.c,v 1.73 2001/11/17 19:14:34 stevesk Exp $");
+RCSID("$OpenBSD: auth2.c,v 1.74 2001/12/05 03:56:39 itojun Exp $");
 
 #include <openssl/evp.h>
 
@@ -111,7 +111,7 @@ Authmethod authmethods[] = {
  */
 
 void
-do_authentication2()
+do_authentication2(void)
 {
 	Authctxt *authctxt = authctxt_new();
 
diff --git a/canohost.c b/canohost.c
index 6e6a04505..015a328e8 100644
--- a/canohost.c
+++ b/canohost.c
@@ -12,7 +12,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: canohost.c,v 1.27 2001/06/23 15:12:17 itojun Exp $");
+RCSID("$OpenBSD: canohost.c,v 1.28 2001/12/05 03:56:39 itojun Exp $");
 
 #include "packet.h"
 #include "xmalloc.h"
@@ -261,7 +261,7 @@ get_local_name(int socket)
  */
 
 const char *
-get_remote_ipaddr()
+get_remote_ipaddr(void)
 {
 	static char *canonical_host_ip = NULL;
 
@@ -344,13 +344,13 @@ get_peer_port(int sock)
 }
 
 int
-get_remote_port()
+get_remote_port(void)
 {
 	return get_port(0);
 }
 
 int
-get_local_port()
+get_local_port(void)
 {
 	return get_port(1);
 }
diff --git a/channels.c b/channels.c
index 62fd73d74..da6fc0008 100644
--- a/channels.c
+++ b/channels.c
@@ -39,7 +39,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: channels.c,v 1.140 2001/10/10 22:18:47 markus Exp $");
+RCSID("$OpenBSD: channels.c,v 1.142 2001/12/05 03:56:39 itojun Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -361,7 +361,7 @@ channel_free_all(void)
  */
 
 void
-channel_close_all()
+channel_close_all(void)
 {
 	int i;
 
@@ -402,7 +402,7 @@ channel_stop_listening(void)
  */
 
 int
-channel_not_very_much_buffered_data()
+channel_not_very_much_buffered_data(void)
 {
 	u_int i;
 	Channel *c;
@@ -432,7 +432,7 @@ channel_not_very_much_buffered_data()
 /* Returns true if any channel is still open. */
 
 int
-channel_still_open()
+channel_still_open(void)
 {
 	int i;
 	Channel *c;
@@ -475,7 +475,7 @@ channel_still_open()
 /* Returns the id of an open channel suitable for keepaliving */
 
 int
-channel_find_open()
+channel_find_open(void)
 {
 	int i;
 	Channel *c;
@@ -520,7 +520,7 @@ channel_find_open()
  */
 
 char *
-channel_open_message()
+channel_open_message(void)
 {
 	Buffer buffer;
 	Channel *c;
@@ -1601,7 +1601,7 @@ channel_after_select(fd_set * readset, fd_set * writeset)
 /* If there is data to send to the connection, enqueue some of it now. */
 
 void
-channel_output_poll()
+channel_output_poll(void)
 {
 	int len, i;
 	Channel *c;
@@ -2271,7 +2271,7 @@ channel_input_port_forward_request(int is_root, int gateway_ports)
  * anyway, and the server has no way to know but to trust the client anyway.
  */
 void
-channel_permit_all_opens()
+channel_permit_all_opens(void)
 {
 	if (num_permitted_opens == 0)
 		all_opens_permitted = 1;
@@ -2811,7 +2811,7 @@ x11_request_forwarding_with_spoofing(int client_session_id,
 /* Sends a message to the server to request authentication fd forwarding. */
 
 void
-auth_request_forwarding()
+auth_request_forwarding(void)
 {
 	packet_start(SSH_CMSG_AGENT_REQUEST_FORWARDING);
 	packet_send();
@@ -2825,7 +2825,7 @@ auth_request_forwarding()
  */
 
 char *
-auth_get_socket_name()
+auth_get_socket_name(void)
 {
 	return auth_sock_name;
 }
diff --git a/deattack.c b/deattack.c
index 44220491d..96a7ebf4c 100644
--- a/deattack.c
+++ b/deattack.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: deattack.c,v 1.15 2001/11/19 19:02:16 mpech Exp $	*/
+/*	$OpenBSD: deattack.c,v 1.16 2001/12/05 03:56:39 itojun Exp $	*/
 
 /*
  * Cryptographic attack detector for ssh - source code
@@ -25,6 +25,7 @@
 #include "crc32.h"
 #include "getput.h"
 #include "xmalloc.h"
+#include "deattack.h"
 
 /* SSH Constants */
 #define SSH_MAXBLOCKS	(32 * 1024)
diff --git a/packet.c b/packet.c
index 7b94169a3..441f87ac0 100644
--- a/packet.c
+++ b/packet.c
@@ -37,7 +37,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: packet.c,v 1.72 2001/11/10 13:37:20 markus Exp $");
+RCSID("$OpenBSD: packet.c,v 1.73 2001/12/05 03:56:39 itojun Exp $");
 
 #include "xmalloc.h"
 #include "buffer.h"
@@ -147,7 +147,7 @@ packet_set_connection(int fd_in, int fd_out)
 /* Returns 1 if remote host is connected via socket, 0 if not. */
 
 int
-packet_connection_is_on_socket()
+packet_connection_is_on_socket(void)
 {
 	struct sockaddr_storage from, to;
 	socklen_t fromlen, tolen;
@@ -173,7 +173,7 @@ packet_connection_is_on_socket()
 /* returns 1 if connection is via ipv4 */
 
 int
-packet_connection_is_ipv4()
+packet_connection_is_ipv4(void)
 {
 	struct sockaddr_storage to;
 	socklen_t tolen = sizeof(to);
@@ -189,7 +189,7 @@ packet_connection_is_ipv4()
 /* Sets the connection into non-blocking mode. */
 
 void
-packet_set_nonblocking()
+packet_set_nonblocking(void)
 {
 	/* Set the socket into non-blocking mode. */
 	if (fcntl(connection_in, F_SETFL, O_NONBLOCK) < 0)
@@ -204,7 +204,7 @@ packet_set_nonblocking()
 /* Returns the socket used for reading. */
 
 int
-packet_get_connection_in()
+packet_get_connection_in(void)
 {
 	return connection_in;
 }
@@ -212,7 +212,7 @@ packet_get_connection_in()
 /* Returns the descriptor used for writing. */
 
 int
-packet_get_connection_out()
+packet_get_connection_out(void)
 {
 	return connection_out;
 }
@@ -220,7 +220,7 @@ packet_get_connection_out()
 /* Closes the connection and clears and frees internal data structures. */
 
 void
-packet_close()
+packet_close(void)
 {
 	if (!initialized)
 		return;
@@ -253,7 +253,7 @@ packet_set_protocol_flags(u_int protocol_flags)
 /* Returns the remote protocol flags set earlier by the above function. */
 
 u_int
-packet_get_protocol_flags()
+packet_get_protocol_flags(void)
 {
 	return remote_protocol_flags;
 }
@@ -594,7 +594,7 @@ packet_send2(void)
 }
 
 void
-packet_send()
+packet_send(void)
 {
 	if (compat20)
 		packet_send2();
@@ -964,7 +964,7 @@ packet_process_incoming(const char *buf, u_int len)
 /* Returns a character from the packet. */
 
 u_int
-packet_get_char()
+packet_get_char(void)
 {
 	char ch;
 	buffer_get(&incoming_packet, &ch, 1);
@@ -974,7 +974,7 @@ packet_get_char()
 /* Returns an integer from the packet data. */
 
 u_int
-packet_get_int()
+packet_get_int(void)
 {
 	return buffer_get_int(&incoming_packet);
 }
@@ -1111,7 +1111,7 @@ packet_disconnect(const char *fmt,...)
 /* Checks if there is any buffered output, and tries to write some of the output. */
 
 void
-packet_write_poll()
+packet_write_poll(void)
 {
 	int len = buffer_len(&output);
 	if (len > 0) {
@@ -1132,7 +1132,7 @@ packet_write_poll()
  */
 
 void
-packet_write_wait()
+packet_write_wait(void)
 {
 	fd_set *setp;
 
@@ -1154,7 +1154,7 @@ packet_write_wait()
 /* Returns true if there is buffered data to write to the connection. */
 
 int
-packet_have_data_to_write()
+packet_have_data_to_write(void)
 {
 	return buffer_len(&output) != 0;
 }
@@ -1162,7 +1162,7 @@ packet_have_data_to_write()
 /* Returns true if there is not too much data to write to the connection. */
 
 int
-packet_not_very_much_data_to_write()
+packet_not_very_much_data_to_write(void)
 {
 	if (interactive_mode)
 		return buffer_len(&output) < 16384;
@@ -1227,7 +1227,7 @@ packet_set_interactive(int interactive)
 /* Returns true if the current connection is interactive. */
 
 int
-packet_is_interactive()
+packet_is_interactive(void)
 {
 	return interactive_mode;
 }
diff --git a/scp.c b/scp.c
index fb4d3096c..d285f9f55 100644
--- a/scp.c
+++ b/scp.c
@@ -75,7 +75,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: scp.c,v 1.85 2001/10/01 08:06:28 markus Exp $");
+RCSID("$OpenBSD: scp.c,v 1.86 2001/12/05 03:56:39 itojun Exp $");
 
 #include "xmalloc.h"
 #include "atomicio.h"
@@ -930,7 +930,7 @@ screwup:
 }
 
 int
-response()
+response(void)
 {
 	char ch, *cp, resp, rbuf[2048];
 
@@ -963,7 +963,7 @@ response()
 }
 
 void
-usage()
+usage(void)
 {
 	(void) fprintf(stderr,
 	    "usage: scp [-pqrvBC46] [-F config] [-S ssh] [-P port] [-c cipher] [-i identity]\n"
diff --git a/sshconnect2.c b/sshconnect2.c
index 310788538..bb062939a 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect2.c,v 1.85 2001/11/07 16:03:17 markus Exp $");
+RCSID("$OpenBSD: sshconnect2.c,v 1.86 2001/12/05 03:56:39 itojun Exp $");
 
 #include <openssl/bn.h>
 #include <openssl/md5.h>
@@ -174,20 +174,20 @@ struct Authmethod {
 	int	*batch_flag;	/* flag in option struct that disables method */
 };
 
-void	input_userauth_success(int type, int plen, void *ctxt);
-void	input_userauth_failure(int type, int plen, void *ctxt);
-void	input_userauth_banner(int type, int plen, void *ctxt);
-void	input_userauth_error(int type, int plen, void *ctxt);
-void	input_userauth_info_req(int type, int plen, void *ctxt);
-void	input_userauth_pk_ok(int type, int plen, void *ctxt);
+void	input_userauth_success(int, int, void *);
+void	input_userauth_failure(int, int, void *);
+void	input_userauth_banner(int, int, void *);
+void	input_userauth_error(int, int, void *);
+void	input_userauth_info_req(int, int, void *);
+void	input_userauth_pk_ok(int, int, void *);
 
-int	userauth_none(Authctxt *authctxt);
-int	userauth_pubkey(Authctxt *authctxt);
-int	userauth_passwd(Authctxt *authctxt);
-int	userauth_kbdint(Authctxt *authctxt);
-int	userauth_hostbased(Authctxt *authctxt);
+int	userauth_none(Authctxt *);
+int	userauth_pubkey(Authctxt *);
+int	userauth_passwd(Authctxt *);
+int	userauth_kbdint(Authctxt *);
+int	userauth_hostbased(Authctxt *);
 
-void	userauth(Authctxt *authctxt, char *authlist);
+void	userauth(Authctxt *, char *);
 
 static int sign_and_send_pubkey(Authctxt *, Key *, sign_cb_fn *);
 static void clear_auth_state(Authctxt *);