Improved ldap_int_strtok. If strtok_r does not exists, it will be worked

simulated with strspn and strpbrk. If strspn or strpbrk aren't there, they
will be supplied.
In addition, the memory-handling of the ldap_int_gethostby's is better now.

configure.in

@@ -1254,6 +1254,8 @@ AC_CHECK_FUNCS(		\
 	strtok			\
 	strtol			\
 	strtoul			\
+	strspn			\
+	strpbrk			\	
 	sysconf			\
 	waitpid			\
 )

libraries/libldap/util-int.c

@@ -30,12 +30,68 @@
 
 #include "ldap-int.h"
 
+static int int_strspn( const char *str, const char *delim )
+{
+#if defined( HAVE_STRSPN )
+	return strspn( str, delim );
+#else
+	int pos;
+	const char *p=delim;
+	for( pos=0; (*str) ; pos++,str++) {
+		if (*str!=*p)
+			for( p=delim; (*p) ; p++ ) {
+				if (*str==*p)
+					break;
+		  	}
+		if (*p=='\0')
+			return pos;
+	}
+	return pos;
+#endif	
+}
+
+static char *int_strpbrk( const char *str, const char *accept )
+{
+#if defined( HAVE_STRPBRK )
+	return strpbrk( str, accept );
+#else
+	const char *p;
+	for( ; (*str) ; str++ ) {
+		for( p=accept; (*p) ; p++) {
+			if (*str==*p)
+				return str;
+		}
+	}
+	return NULL;
+#endif
+}
+
 char *ldap_int_strtok( char *str, const char *delim, char **pos )
 {
 #ifdef HAVE_STRTOK_R
 	return strtok_r(str, delim, pos);
 #else
-	return strtok(str, delim);
+	char *p;
+
+	if (pos==NULL)
+		return NULL;
+	if (str==NULL) {
+		if (*pos==NULL)
+			return NULL;
+		str=*pos;
+	}
+	/* skip any initial delimiters */
+	str += int_strspn( str, delim );
+	if (*str == '\0')
+		return NULL;
+	p = int_strpbrk( str, delim );
+	if (p==NULL) {
+		*pos = NULL;
+	} else {
+		*p ='\0';
+		*pos = p+1;
+	}
+	return str;
 #endif
 }
 
@@ -50,7 +106,8 @@ char *ldap_int_ctime( const time_t *tp, char *buf )
 	return ctime_r(tp,buf);
 # endif	  
 #else
-	return ctime(tp);
+	memcpy( buf, ctime(tp), 26 );
+	return buf;
 #endif	
 }
 
@@ -75,11 +132,12 @@ int ldap_int_gethostbyname_a(
 	int *herrno_ptr )
 {
 #ifdef HAVE_GETHOSTBYNAME_R
-	int r;
+	int r=-1;
 	int buflen=BUFSTART;
-
-	if (safe_realloc( buf, buflen)) {
+	*buf = NULL;
 	for(;buflen<BUFMAX;) {
+		if (safe_realloc( buf, buflen )==NULL)
+			return r;
 		r = gethostbyname_r( name, resbuf, *buf,
 			buflen, result, herrno_ptr );
 #ifdef NETDB_INTERNAL
@@ -87,16 +145,14 @@ int ldap_int_gethostbyname_a(
 			(*herrno_ptr==NETDB_INTERNAL) &&
 			(errno==ERANGE))
 		{
-				if (safe_realloc( buf, buflen*=2 )) {
+			buflen*=2;
 			continue;
 	 	}
-	 		}
 #endif
 		return r;
 	}
-	}
-
-#else /* gethostbyname() */
+	return -1;
+#else	
 	*result = gethostbyname( name );
 
 	if (*result!=NULL) {
@@ -104,9 +160,9 @@ int ldap_int_gethostbyname_a(
 	}
 
 	*herrno_ptr = h_errno;
-#endif	
 	
 	return -1;
+#endif	
 }
 	 
 int ldap_int_gethostbyaddr_a(
@@ -119,10 +175,12 @@ int ldap_int_gethostbyaddr_a(
 	int *herrno_ptr )
 {
 #ifdef HAVE_GETHOSTBYADDR_R
-	int r;
+	int r=-1;
 	int buflen=BUFSTART;
-	if (safe_realloc( buf, buflen)) {
+	*buf = NULL;   
 	for(;buflen<BUFMAX;) {
+		if (safe_realloc( buf, buflen )==NULL)
+			return r;
 		r = gethostbyaddr_r( addr, len, type,
 			resbuf, *buf, buflen, 
 			result, herrno_ptr );
@@ -131,21 +189,19 @@ int ldap_int_gethostbyaddr_a(
 			(*herrno_ptr==NETDB_INTERNAL) &&
 			(errno==ERANGE))
 		{
-				if (safe_realloc( buf, buflen*=2))
+			buflen*=2;
 			continue;
 		}
 #endif
 		return r;
 	}
-	}
-
+	return -1;
 #else /* gethostbyaddr() */
 	*result = gethostbyaddr( addr, len, type );
 
 	if (*result!=NULL) {
 		return 0;
 	}
-#endif	
-
 	return -1;
+#endif	
 }