provide replacement implementation for strndup() for systems that don't have it

git-svn-id: http://arthurdejong.org/svn/nss-pam-ldapd/nss-pam-ldapd@1427 ef36b2f9-881f-0410-afb5-c4e39611909c

3 files changed, 76 insertions, 1 deletions

diff --git a/compat/Makefile.am b/compat/Makefile.am
index 8e8e3a7..9ff1204 100644
--- a/compat/Makefile.am
+++ b/compat/Makefile.am
@@ -1,6 +1,6 @@
 # Makefile.am - use automake to generate Makefile.in
 #
-# Copyright (C) 2008, 2009, 2010 Arthur de Jong
+# Copyright (C) 2008, 2009, 2010, 2011 Arthur de Jong
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -25,6 +25,7 @@ AM_CFLAGS = -fPIC
 EXTRA_DIST = getopt_long.c getopt_long.h \
              daemon.c daemon.h \
              ether.c ether.h \
+             strndup.c strndup.h \
              nss_compat.h \
              ldap_compat.h pagectrl.c ldap_passwd_s.c ldap_initialize.c \
              pam_compat.h pam_get_authtok.c pam_prompt.c
diff --git a/compat/strndup.c b/compat/strndup.c
new file mode 100644
index 0000000..9eb38a0
--- /dev/null
+++ b/compat/strndup.c
@@ -0,0 +1,41 @@
+/*
+   strndup.c - implementation of strndup() for systems that lack it
+
+   Copyright (C) 2011 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "strndup.h"
+
+/* this is a strndup() replacement for systems that don't have it
+   (strndup() is in POSIX 2008 now) */
+char *strndup(const char *s,size_t size)
+{
+  char *result;
+  result=(char *)malloc(size+1);
+  if (result!=NULL)
+  {
+    strncpy(result,s,size);
+    result[size]='\0';
+  }
+  return result;
+}
diff --git a/compat/strndup.h b/compat/strndup.h
new file mode 100644
index 0000000..abedd22
--- /dev/null
+++ b/compat/strndup.h
@@ -0,0 +1,33 @@
+/*
+   strndup.h - definition of strndup() for systems that lack it
+
+   Copyright (C) 2011 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#ifndef COMPAT__STRNDUP_H
+#define COMPAT__STRNDUP_H 1
+
+#ifndef HAVE_STRNDUP
+
+/* this is a strndup() replacement for systems that don't have it
+   (strndup() is in POSIX 2008 now) */
+char *strndup(const char *s,size_t size);
+
+#endif /* not HAVE_STRNDUP */
+
+#endif /* COMPAT__STRNDUP_H */