1457. [port] Provide strlcat() and strlcpy() for platforms without

                        them.

CHANGES

+1457.	[port]		Provide strlcat() and strlcpy() for platforms without
+			them.
+
 1456.	[contrib]	gen-data-queryperf.py from Stephane Bortzmeyer.
 
 1455.	[bug]		<netaddr> missing from server grammar in

configure

 #! /bin/sh
-# From configure.in Revision: 1.341 .
+# From configure.in Revision: 1.342 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53.
 #
@@ -12945,6 +12945,187 @@ echo "${ECHO_T}no" >&6; ISC_PLATFORM_NEEDSTRSEP="#define ISC_PLATFORM_NEEDSTRSEP
 fi
 rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
 
+
+echo "$as_me:$LINENO: checking for strlcpy" >&5
+echo $ECHO_N "checking for strlcpy... $ECHO_C" >&6
+if test "${ac_cv_func_strlcpy+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+/* From autoconf 2.57 */
+/* Define strlcpy to an innocuous variant, in case <limits.h> declares strlcpy.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strlcpy innocuous_strlcpy
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strlcpy (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef strlcpy
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strlcpy ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_strlcpy) || defined (__stub___strlcpy)
+choke me
+#else
+char (*f) () = strlcpy;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+return f != strlcpy;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strlcpy=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_func_strlcpy=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strlcpy" >&5
+echo "${ECHO_T}$ac_cv_func_strlcpy" >&6
+if test $ac_cv_func_strlcpy = yes; then
+  ISC_PLATFORM_NEEDSTRLCPY="#undef ISC_PLATFORM_NEEDSTRLCPY"
+else
+  ISC_PLATFORM_NEEDSTRLCPY="#define ISC_PLATFORM_NEEDSTRLCPY 1"
+fi
+
+
+
+echo "$as_me:$LINENO: checking for strlcat" >&5
+echo $ECHO_N "checking for strlcat... $ECHO_C" >&6
+if test "${ac_cv_func_strlcat+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+/* From autoconf 2.57 */
+/* Define strlcat to an innocuous variant, in case <limits.h> declares strlcat.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define strlcat innocuous_strlcat
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char strlcat (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef strlcat
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char strlcat ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_strlcat) || defined (__stub___strlcat)
+choke me
+#else
+char (*f) () = strlcat;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+return f != strlcat;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_strlcat=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_func_strlcat=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_strlcat" >&5
+echo "${ECHO_T}$ac_cv_func_strlcat" >&6
+if test $ac_cv_func_strlcat = yes; then
+  ISC_PLATFORM_NEEDSTRLCAT="#undef ISC_PLATFORM_NEEDSTRLCAT"
+else
+  ISC_PLATFORM_NEEDSTRLCAT="#define ISC_PLATFORM_NEEDSTRLCAT 1"
+fi
+
+
+
 echo "$as_me:$LINENO: checking for vsnprintf" >&5
 echo $ECHO_N "checking for vsnprintf... $ECHO_C" >&6
 if test "${ac_cv_func_vsnprintf+set}" = set; then
@@ -15225,6 +15406,8 @@ s,@ISC_LWRES_GETIPNODEPROTO@,$ISC_LWRES_GETIPNODEPROTO,;t t
 s,@ISC_LWRES_GETADDRINFOPROTO@,$ISC_LWRES_GETADDRINFOPROTO,;t t
 s,@ISC_LWRES_GETNAMEINFOPROTO@,$ISC_LWRES_GETNAMEINFOPROTO,;t t
 s,@ISC_PLATFORM_NEEDSTRSEP@,$ISC_PLATFORM_NEEDSTRSEP,;t t
+s,@ISC_PLATFORM_NEEDSTRLCPY@,$ISC_PLATFORM_NEEDSTRLCPY,;t t
+s,@ISC_PLATFORM_NEEDSTRLCAT@,$ISC_PLATFORM_NEEDSTRLCAT,;t t
 s,@ISC_PLATFORM_NEEDVSNPRINTF@,$ISC_PLATFORM_NEEDVSNPRINTF,;t t
 s,@ISC_EXTRA_OBJS@,$ISC_EXTRA_OBJS,;t t
 s,@ISC_EXTRA_SRCS@,$ISC_EXTRA_SRCS,;t t

configure.in

@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.341 $)
+AC_REVISION($Revision: 1.342 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -1573,14 +1573,25 @@ AC_MSG_CHECKING(for correctly declared strsep())
 AC_TRY_LINK([#include <string.h>], [char *sp; char *foo = strsep(&sp, ".");],
 	[AC_MSG_RESULT(yes); ISC_PLATFORM_NEEDSTRSEP="#undef ISC_PLATFORM_NEEDSTRSEP"],
 	[AC_MSG_RESULT(no); ISC_PLATFORM_NEEDSTRSEP="#define ISC_PLATFORM_NEEDSTRSEP 1"])
+AC_SUBST(ISC_PLATFORM_NEEDSTRSEP)
+
+AC_CHECK_FUNC(strlcpy,
+	[ISC_PLATFORM_NEEDSTRLCPY="#undef ISC_PLATFORM_NEEDSTRLCPY"],
+	[ISC_PLATFORM_NEEDSTRLCPY="#define ISC_PLATFORM_NEEDSTRLCPY 1"])
+AC_SUBST(ISC_PLATFORM_NEEDSTRLCPY)
+
+AC_CHECK_FUNC(strlcat,
+	[ISC_PLATFORM_NEEDSTRLCAT="#undef ISC_PLATFORM_NEEDSTRLCAT"],
+	[ISC_PLATFORM_NEEDSTRLCAT="#define ISC_PLATFORM_NEEDSTRLCAT 1"])
+AC_SUBST(ISC_PLATFORM_NEEDSTRLCAT)
 
 AC_CHECK_FUNC(vsnprintf,
 	[ISC_PLATFORM_NEEDVSNPRINTF="#undef ISC_PLATFORM_NEEDVSNPRINTF"],
 	[ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS print.$O"
 	 ISC_EXTRA_SRCS="$ISC_EXTRA_SRCS print.c"
 	 ISC_PLATFORM_NEEDVSNPRINTF="#define ISC_PLATFORM_NEEDVSNPRINTF 1"])
-AC_SUBST(ISC_PLATFORM_NEEDSTRSEP)
 AC_SUBST(ISC_PLATFORM_NEEDVSNPRINTF)
+
 AC_CHECK_FUNC(strerror, AC_DEFINE(HAVE_STRERROR))
 
 AC_SUBST(ISC_EXTRA_OBJS)

lib/isc/include/isc/platform.h.in

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: platform.h.in,v 1.30 2002/11/26 03:50:07 marka Exp $ */
+/* $Id: platform.h.in,v 1.31 2003/04/10 04:46:27 marka Exp $ */
 
 #ifndef ISC_PLATFORM_H
 #define ISC_PLATFORM_H 1
@@ -106,6 +106,16 @@
  */
 @ISC_PLATFORM_NEEDSTRSEP@
 
+/*
+ * If the system needs strlcpy(), ISC_PLATFORM_NEEDSTRLCPY will be defined.
+ */
+@ISC_PLATFORM_NEEDSTRLCPY@
+
+/*
+ * If the system needs strlcat(), ISC_PLATFORM_NEEDSTRLCAT will be defined.
+ */
+@ISC_PLATFORM_NEEDSTRLCAT@
+
 /*
  * Define either ISC_PLATFORM_BSD44MSGHDR or ISC_PLATFORM_BSD43MSGHDR.
  */

lib/isc/include/isc/string.h

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: string.h,v 1.9 2001/01/09 21:57:37 bwelling Exp $ */
+/* $Id: string.h,v 1.10 2003/04/10 04:46:27 marka Exp $ */
 
 #ifndef ISC_STRING_H
 #define ISC_STRING_H 1
@@ -51,6 +51,22 @@ isc_string_separate(char **stringp, const char *delim);
 #define strsep isc_string_separate
 #endif
 
+size_t
+isc_string_strlcpy(char *dst, const char *src, size_t size);
+
+
+#ifdef ISC_PLATFORM_NEEDSTRLCPY
+#define strlcpy isc_string_strlcpy
+#endif
+
+
+size_t
+isc_string_strlcat(char *dst, const char *src, size_t size);
+
+#ifdef ISC_PLATFORM_NEEDSTRLCAT
+#define strlcat isc_string_strlcat
+#endif
+
 ISC_LANG_ENDDECLS
 
 #endif /* ISC_STRING_H */

lib/isc/string.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: string.c,v 1.6 2001/01/09 21:56:30 bwelling Exp $ */
+/* $Id: string.c,v 1.7 2003/04/10 04:46:27 marka Exp $ */
 
 #include <config.h>
 
@@ -109,3 +109,57 @@ isc_string_separate(char **stringp, const char *delim) {
 	*stringp = NULL;
 	return (string);
 }
+
+size_t
+strlcpy(char *dst, const char *src, size_t size)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = size;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0) {
+		do {
+			if ((*d++ = *s++) == 0)
+				break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (size != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}
+
+size_t
+strlcat(char *dst, const char *src, size_t size)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = size;
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end */
+	while (n-- != 0 && *d != '\0')
+		d++;
+	dlen = d - dst;
+	n = size - dlen;
+
+	if (n == 0)
+		return(dlen + strlen(s));
+	while (*s != '\0') {
+		if (n != 1) {
+			*d++ = *s;
+			n--;
+		}
+		s++;
+	}
+	*d = '\0';
+
+	return(dlen + (s - src));	/* count does not include NUL */
+}