/* Generic string.h */
+/*
+ * Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted only
+ * as authorized by the OpenLDAP Public License. A copy of this
+ * license is available at http://www.OpenLDAP.org/license.html or
+ * in file LICENSE in the top-level directory of the distribution.
+ */
#ifndef _AC_STRING_H
#define _AC_STRING_H
-#if STDC_HEADERS
-# include <string.h>
+#ifdef STDC_HEADERS
+# include <string.h>
+
+#else
+# ifdef HAVE_STRING_H
+# include <string.h>
+# elif HAVE_STRINGS_H
+# include <strings.h>
+# endif
+
+# ifdef HAVE_MEMORY_H
+# include <memory.h>
+# endif
+
+# ifndef HAVE_STRRCHR
+# undef strchr
+# define strchr index
+# undef strrchr
+# define strrchr rindex
+# endif
+
+# ifndef HAVE_MEMCPY
+# undef memcpy
+# define memcpy(d, s, n) ((void) bcopy ((s), (d), (n)))
+# undef memmove
+# define memmove(d, s, n) ((void) bcopy ((s), (d), (n)))
+# endif
+#endif
+
+/* use ldap_pvt_strtok instead of strtok or strtok_r! */
+LDAP_F(char *) ldap_pvt_strtok LDAP_P((
+ char *str, const char *delim, char **pos ));
+
+LDAP_F(char *) ldap_pvt_strdup LDAP_P((
+ const char * s ));
+
+#ifndef HAVE_STRDUP
+ /* strdup() is missing, declare our own version */
+# undef strdup
+# define strdup(s) ldap_pvt_strdup(s)
#else
-# ifndef HAVE_STRCHR
-# define strchr index
-# define strrchr rindex
-# endif
-char *strchr (), *strrchr ();
-# ifndef HAVE_MEMCPY
-# define memcpy(d, s, n) bcopy ((s), (d), (n))
-# define memmove(d, s, n) bcopy ((s), (d), (n))
-# endif
+ /* some systems fail to declare strdup */
+ extern char *(strdup)();
+#endif
+
+/*
+ * some systems fail to declare strcasecmp() and strncasecmp()
+ * we need them declared so we can obtain pointers to them
+ */
+extern int (strcasecmp)();
+extern int (strncasecmp)();
+
+#ifndef SAFEMEMCPY
+# if defined( HAVE_MEMMOVE )
+# define SAFEMEMCPY( d, s, n ) memmove((d), (s), (n))
+# elif defined( HAVE_BCOPY )
+# define SAFEMEMCPY( d, s, n ) bcopy((s), (d), (n))
+# else
+ /* nothing left but memcpy() */
+# define SAFEMEMCPY( d, s, n ) memcpy((d), (s), (n))
+# endif
#endif
#endif /* _AC_STRING_H */