added Joerg Jung's pledge patch

LICENSE

@@ -1,6 +1,6 @@
 MIT/X Consortium License
 
-© 2005-2013 Anselm R Garbe <anselm@garbe.us>
+© 2005-2017 Anselm R Garbe <anselm@garbe.us>
 © 2008-2009 Jeroen Schot <schot@a-eskwadraat.nl>
 © 2007-2009 Kris Maglione <maglione.k@gmail.com>
 © 2005 Nico Golde <nico at ngolde dot de>

Makefile

@@ -17,7 +17,7 @@ options:
 	@echo CC $<
 	@${CC} -c ${CFLAGS} $<
 
-${OBJ}: config.h config.mk util.c
+${OBJ}: config.h config.mk strlcpy.c util.c
 
 config.h:
 	@echo creating $@ from config.def.h
@@ -34,7 +34,7 @@ clean:
 dist: clean
 	@echo creating dist tarball
 	@mkdir -p sic-${VERSION}
-	@cp -R LICENSE Makefile README arg.h config.def.h config.mk sic.1 sic.c util.c sic-${VERSION}
+	@cp -R LICENSE Makefile README arg.h config.def.h config.mk sic.1 sic.c util.c strlcpy.c sic-${VERSION}
 	@tar -cf sic-${VERSION}.tar sic-${VERSION}
 	@gzip sic-${VERSION}.tar
 	@rm -rf sic-${VERSION}

sic.c

@@ -22,6 +22,8 @@ static char channel[256];
 static time_t trespond;
 static FILE *srv;
 
+#undef strlcpy
+#include "strlcpy.c"
 #include "util.c"
 
 static void
@@ -182,6 +184,10 @@ main(int argc, char *argv[]) {
 	setbuf(stdout, NULL);
 	setbuf(srv, NULL);
 	setbuf(stdin, NULL);
+#ifdef __OpenBSD__
+	if (pledge("stdio", NULL) == -1)
+		eprint("error: pledge:");
+#endif
 	for(;;) { /* main loop */
 		FD_ZERO(&rd);
 		FD_SET(0, &rd);

strlcpy.c

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <string.h>
+#include <sys/types.h>
+
+/*
+ * Copy src to string dst of size siz. At most siz-1 characters
+ * will be copied. Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+	/* Copy as many bytes as will fit */
+	if (n != 0) {
+		while (--n != 0) {
+			if ((*d++ = *s++) == '\0')
+				break;
+		}
+	}
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0'; /* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+	return(s - src - 1); /* count does not include NUL */
+}

util.c

@@ -40,13 +40,6 @@ dial(char *host, char *port) {
 	return srv;
 }
 
-#define strlcpy _strlcpy
-static void
-strlcpy(char *to, const char *from, int l) {
-	memccpy(to, from, '\0', l);
-	to[l-1] = '\0';
-}
-
 static char *
 eat(char *s, int (*p)(int), int r) {
 	while(*s != '\0' && p(*s) == r)