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+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2007, Digium, Inc.
+ *
+ * Luigi Rizzo
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Wrapper for network related headers,
+ * masking differences between various operating systems.
+ * On passing, we also provide here trivial functions or
+ * other simple wrappers to network-related functions.
+ */
+
+#ifndef _ASTERISK_NETWORK_H
+#define _ASTERISK_NETWORK_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+/*
+ * Include relevant network headers.
+ * Our preferred choice are the standard BSD/linux/unix headers.
+ * Missing them (e.g. for solaris or various windows environments),
+ * we resort to whatever we find around, and provide local definitions
+ * for the missing bits.
+ */
+#ifdef HAVE_ARPA_INET_H
+#include <netinet/in.h>
+#include <arpa/inet.h> /* include early to override inet_ntoa */
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#elif defined(HAVE_WINSOCK_H)
+#include <winsock.h>
+typedef int socklen_t;
+#elif defined(HAVE_WINSOCK2_H)
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#error "don't know how to handle network functions here."
+#endif
+
+#ifndef HAVE_INET_ATON
+int inet_aton(const char *cp, struct in_addr *pin);
+#endif
+
+#ifndef IFNAMSIZ
+#define IFNAMSIZ 16
+#endif
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 256
+#endif
+
+/*!
+ * \brief thread-safe replacement for inet_ntoa().
+ *
+ * \note It is very important to note that even though this is a thread-safe
+ * replacement for inet_ntoa(), it is *not* reentrant. In a single
+ * thread, the result from a previous call to this function is no longer
+ * valid once it is called again. If the result from multiple calls to
+ * this function need to be kept or used at once, then the result must be
+ * copied to a local buffer before calling this function again.
+ */
+const char *ast_inet_ntoa(struct in_addr ia);
+
+#ifdef inet_ntoa
+#undef inet_ntoa
+#endif
+#define inet_ntoa __dont__use__inet_ntoa__use__ast_inet_ntoa__instead__
+
+/*! \brief Compares the source address and port of two sockaddr_in */
+static force_inline int inaddrcmp(const struct sockaddr_in *sin1, const struct sockaddr_in *sin2)
+{
+ return ((sin1->sin_addr.s_addr != sin2->sin_addr.s_addr)
+ || (sin1->sin_port != sin2->sin_port));
+}
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* _ASTERISK_NETWORK_H */