IDF release/v4.0 08219f3cf

tools/sdk/include/coap/coap2/address.h

@@ -0,0 +1,177 @@
+/*
+ * address.h -- representation of network addresses
+ *
+ * Copyright (C) 2010-2011,2015-2016 Olaf Bergmann <bergmann@tzi.org>
+ *
+ * This file is part of the CoAP library libcoap. Please see README for terms
+ * of use.
+ */
+
+/**
+ * @file address.h
+ * @brief Representation of network addresses
+ */
+
+#ifndef COAP_ADDRESS_H_
+#define COAP_ADDRESS_H_
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include "libcoap.h"
+
+#if defined(WITH_LWIP)
+
+#include <lwip/ip_addr.h>
+
+typedef struct coap_address_t {
+  uint16_t port;
+  ip_addr_t addr;
+} coap_address_t;
+
+#define _coap_address_equals_impl(A, B) \
+        ((A)->port == (B)->port        \
+        && (!!ip_addr_cmp(&(A)->addr,&(B)->addr)))
+
+#define _coap_address_isany_impl(A)  ip_addr_isany(&(A)->addr)
+
+#define _coap_is_mcast_impl(Address) ip_addr_ismulticast(&(Address)->addr)
+
+#elif defined(WITH_CONTIKI)
+
+#include "uip.h"
+
+typedef struct coap_address_t {
+  uip_ipaddr_t addr;
+  uint16_t port;
+} coap_address_t;
+
+#define _coap_address_equals_impl(A,B) \
+        ((A)->port == (B)->port        \
+        && uip_ipaddr_cmp(&((A)->addr),&((B)->addr)))
+
+/** @todo implementation of _coap_address_isany_impl() for Contiki */
+#define _coap_address_isany_impl(A)  0
+
+#define _coap_is_mcast_impl(Address) uip_is_addr_mcast(&((Address)->addr))
+
+#else /* WITH_LWIP || WITH_CONTIKI */
+
+ /** multi-purpose address abstraction */
+typedef struct coap_address_t {
+  socklen_t size;           /**< size of addr */
+  union {
+    struct sockaddr         sa;
+    struct sockaddr_in      sin;
+    struct sockaddr_in6     sin6;
+  } addr;
+} coap_address_t;
+
+/**
+ * Compares given address objects @p a and @p b. This function returns @c 1 if
+ * addresses are equal, @c 0 otherwise. The parameters @p a and @p b must not be
+ * @c NULL;
+ */
+int coap_address_equals(const coap_address_t *a, const coap_address_t *b);
+
+COAP_STATIC_INLINE int
+_coap_address_isany_impl(const coap_address_t *a) {
+  /* need to compare only relevant parts of sockaddr_in6 */
+  switch (a->addr.sa.sa_family) {
+  case AF_INET:
+    return a->addr.sin.sin_addr.s_addr == INADDR_ANY;
+  case AF_INET6:
+    return memcmp(&in6addr_any,
+                  &a->addr.sin6.sin6_addr,
+                  sizeof(in6addr_any)) == 0;
+  default:
+    ;
+  }
+
+  return 0;
+}
+#endif /* WITH_LWIP || WITH_CONTIKI */
+
+/**
+ * Resets the given coap_address_t object @p addr to its default values. In
+ * particular, the member size must be initialized to the available size for
+ * storing addresses.
+ *
+ * @param addr The coap_address_t object to initialize.
+ */
+COAP_STATIC_INLINE void
+coap_address_init(coap_address_t *addr) {
+  assert(addr);
+  memset(addr, 0, sizeof(coap_address_t));
+#if !defined(WITH_LWIP) && !defined(WITH_CONTIKI)
+  /* lwip and Contiki have constant address sizes and doesn't need the .size part */
+  addr->size = sizeof(addr->addr);
+#endif
+}
+
+/* Convenience function to copy IPv6 addresses without garbage. */
+
+COAP_STATIC_INLINE void
+coap_address_copy( coap_address_t *dst, const coap_address_t *src ) {
+#if defined(WITH_LWIP) || defined(WITH_CONTIKI)
+  memcpy( dst, src, sizeof( coap_address_t ) );
+#else
+  memset( dst, 0, sizeof( coap_address_t ) );
+  dst->size = src->size;
+  if ( src->addr.sa.sa_family == AF_INET6 ) {
+    dst->addr.sin6.sin6_family = src->addr.sin6.sin6_family;
+    dst->addr.sin6.sin6_addr = src->addr.sin6.sin6_addr;
+    dst->addr.sin6.sin6_port = src->addr.sin6.sin6_port;
+    dst->addr.sin6.sin6_scope_id = src->addr.sin6.sin6_scope_id;
+  } else if ( src->addr.sa.sa_family == AF_INET ) {
+    dst->addr.sin = src->addr.sin;
+  } else {
+    memcpy( &dst->addr, &src->addr, src->size );
+  }
+#endif
+}
+
+#if defined(WITH_LWIP) || defined(WITH_CONTIKI)
+/**
+ * Compares given address objects @p a and @p b. This function returns @c 1 if
+ * addresses are equal, @c 0 otherwise. The parameters @p a and @p b must not be
+ * @c NULL;
+ */
+COAP_STATIC_INLINE int
+coap_address_equals(const coap_address_t *a, const coap_address_t *b) {
+  assert(a); assert(b);
+  return _coap_address_equals_impl(a, b);
+}
+#endif
+
+/**
+ * Checks if given address object @p a denotes the wildcard address. This
+ * function returns @c 1 if this is the case, @c 0 otherwise. The parameters @p
+ * a must not be @c NULL;
+ */
+COAP_STATIC_INLINE int
+coap_address_isany(const coap_address_t *a) {
+  assert(a);
+  return _coap_address_isany_impl(a);
+}
+
+#if !defined(WITH_LWIP) && !defined(WITH_CONTIKI)
+
+/**
+ * Checks if given address @p a denotes a multicast address. This function
+ * returns @c 1 if @p a is multicast, @c 0 otherwise.
+ */
+int coap_is_mcast(const coap_address_t *a);
+#else /* !WITH_LWIP && !WITH_CONTIKI */
+/**
+ * Checks if given address @p a denotes a multicast address. This function
+ * returns @c 1 if @p a is multicast, @c 0 otherwise.
+ */
+COAP_STATIC_INLINE int
+coap_is_mcast(const coap_address_t *a) {
+  return a && _coap_is_mcast_impl(a);
+}
+#endif /* !WITH_LWIP && !WITH_CONTIKI */
+
+#endif /* COAP_ADDRESS_H_ */