diff --git a/include/common/standard.h b/include/common/standard.h
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+/*
+  include/common/standard.h
+  This files contains some general purpose functions and macros.
+
+  Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu
+  
+  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, version 2.1
+  exclusively.
+
+  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 _COMMON_STANDARD_H
+#define _COMMON_STANDARD_H
+
+#include <netinet/in.h>
+#include <common/defaults.h>
+#include <common/compat.h>
+
+
+/****** string-specific macros and functions ******/
+/* if a > max, then bound <a> to <max>. The macro returns the new <a> */
+#define UBOUND(a, max)	({ typeof(a) b = (max); if ((a) > b) (a) = b; (a); })
+
+/* if a < min, then bound <a> to <min>. The macro returns the new <a> */
+#define LBOUND(a, min)	({ typeof(a) b = (min); if ((a) < b) (a) = b; (a); })
+
+/* returns 1 only if only zero or one bit is set in X, which means that X is a
+ * power of 2, and 0 otherwise */
+#define POWEROF2(x) (((x) & ((x)-1)) == 0)
+
+
+/*
+ * copies at most <size-1> chars from <src> to <dst>. Last char is always
+ * set to 0, unless <size> is 0. The number of chars copied is returned
+ * (excluding the terminating zero).
+ * This code has been optimized for size and speed : on x86, it's 45 bytes
+ * long, uses only registers, and consumes only 4 cycles per char.
+ */
+extern int strlcpy2(char *dst, const char *src, int size);
+
+/*
+ * This function simply returns a statically allocated string containing
+ * the ascii representation for number 'n' in decimal.
+ */
+extern char *ultoa(unsigned long n);
+
+/*
+ * Returns non-zero if character <s> is a hex digit (0-9, a-f, A-F), else zero.
+ */
+extern int ishex(char s);
+
+/*
+ * converts <str> to a struct sockaddr_in* which is locally allocated.
+ * The format is "addr:port", where "addr" can be a dotted IPv4 address,
+ * a host name, or empty or "*" to indicate INADDR_ANY.
+ */
+struct sockaddr_in *str2sa(char *str);
+
+/*
+ * converts <str> to a two struct in_addr* which are locally allocated.
+ * The format is "addr[/mask]", where "addr" cannot be empty, and mask
+ * is optionnal and either in the dotted or CIDR notation.
+ * Note: "addr" can also be a hostname. Returns 1 if OK, 0 if error.
+ */
+int str2net(char *str, struct in_addr *addr, struct in_addr *mask);
+
+/* will try to encode the string <string> replacing all characters tagged in
+ * <map> with the hexadecimal representation of their ASCII-code (2 digits)
+ * prefixed by <escape>, and will store the result between <start> (included)
+ * and <stop> (excluded), and will always terminate the string with a '\0'
+ * before <stop>. The position of the '\0' is returned if the conversion
+ * completes. If bytes are missing between <start> and <stop>, then the
+ * conversion will be incomplete and truncated. If <stop> <= <start>, the '\0'
+ * cannot even be stored so we return <start> without writing the 0.
+ * The input string must also be zero-terminated.
+ */
+extern const char hextab[];
+char *encode_string(char *start, char *stop,
+		    const char escape, const fd_set *map,
+		    const char *string);
+
+#endif /* _COMMON_STANDARD_H */