1 files changed, 365 insertions, 0 deletions
diff --git a/src/charon/lib/utils/host.c b/src/charon/lib/utils/host.c
new file mode 100644
index 000000000..020ed27f3
--- /dev/null
+++ b/src/charon/lib/utils/host.c
@@ -0,0 +1,365 @@
+/**
+ * @file host.c
+ * 
+ * @brief Implementation of host_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ */
+
+#include <string.h>
+
+#include "host.h"
+
+
+typedef struct private_host_t private_host_t;
+
+/**
+ * @brief Private Data of a host object.
+ */
+struct private_host_t { 	
+	/**
+	 * Public data
+	 */
+	host_t public;
+	
+	/**
+	 * Address family to use, such as AF_INET or AF_INET6
+	 */
+	int family;
+	
+	/**
+	 * string representation of host
+	 */
+	char *string;
+	
+	/**
+	 * low-lewel structure, wich stores the address
+	 */
+	union {
+		struct sockaddr address;
+		struct sockaddr_in address4;
+	};
+	/**
+	 * length of address structure
+	 */
+	socklen_t socklen;
+};
+
+
+/**
+ * implements host_t.get_sockaddr
+ */
+static sockaddr_t *get_sockaddr(private_host_t *this)
+{
+	return &(this->address);
+}
+
+/**
+ * implements host_t.get_sockaddr_len
+ */
+static socklen_t *get_sockaddr_len(private_host_t *this)
+{
+	return &(this->socklen);
+}
+
+/**
+ * Implementation of host_t.is_default_route.
+ */
+static bool is_default_route (private_host_t *this)
+{
+	switch (this->family) 
+	{
+		case AF_INET: 
+		{
+			static u_int8_t default_route[4] = {0x00,0x00,0x00,0x00};
+			
+			if (memcmp(default_route,&(this->address4.sin_addr.s_addr),4) == 0)
+			{
+				return TRUE;
+			}
+			return FALSE;
+		}
+		default:
+		{
+			/* empty chunk is returned */
+			return FALSE;
+		}	
+	}
+}
+
+/**
+ * implements host_t.get_address
+ */
+static char *get_address(private_host_t *this)
+{
+	switch (this->family) 
+	{
+		case AF_INET: 
+		{
+			char *string;
+			/* we need to clone it, since inet_ntoa overwrites 
+			 * internal buffer on subsequent calls
+			 */
+			free(this->string);
+			string = inet_ntoa(this->address4.sin_addr);
+			this->string = malloc(strlen(string)+1);
+			strcpy(this->string, string);
+			return this->string;
+		}
+		default:
+		{
+			return "(family	not supported)";
+		}
+	}
+}
+
+/**
+ * Implementation of host_t.get_address_as_chunk.
+ */
+static chunk_t get_address_as_chunk(private_host_t *this)
+{
+	chunk_t address = CHUNK_INITIALIZER;
+	
+	switch (this->family) 
+	{
+		case AF_INET: 
+		{
+			/* allocate 4 bytes for IPV4 address*/
+			address.ptr = malloc(4);
+			address.len = 4;
+			memcpy(address.ptr,&(this->address4.sin_addr.s_addr),4);
+		}
+		default:
+		{
+			/* empty chunk is returned */
+			return address;
+		}
+	}
+}
+
+static xfrm_address_t get_xfrm_addr(private_host_t *this)
+{
+	switch (this->family) 
+	{
+		case AF_INET: 
+		{
+			return (xfrm_address_t)(this->address4.sin_addr.s_addr);
+		}
+		default:
+		{
+			/* todo */
+			return (xfrm_address_t)(this->address4.sin_addr.s_addr);
+		}
+	}
+}
+
+static int get_family(private_host_t *this)
+{
+	return this->family;	
+}
+
+/**
+ * implements host_t.get_port
+ */
+static u_int16_t get_port(private_host_t *this)
+{
+	switch (this->family) 
+	{
+		case AF_INET: 
+		{
+			return ntohs(this->address4.sin_port);
+		}
+		default:
+		{
+			return 0;
+		}
+	}
+}
+
+
+/**
+ * Implements host_t.clone.
+ */
+static private_host_t *clone(private_host_t *this)
+{
+	private_host_t *new = malloc_thing(private_host_t);
+	
+		
+	memcpy(new, this, sizeof(private_host_t));
+	if (this->string)
+	{
+		new->string = malloc(strlen(this->string)+1);
+		strcpy(new->string, this->string);
+	}
+	return new;
+}
+
+/**
+ * Impelements host_t.ip_equals
+ */
+static bool ip_equals(private_host_t *this, private_host_t *other)
+{
+	switch (this->family)
+	{
+		/* IPv4 */
+		case AF_INET:
+		{
+			if ((this->address4.sin_family == other->address4.sin_family) &&
+				(this->address4.sin_addr.s_addr == other->address4.sin_addr.s_addr))
+			{
+				return TRUE;	
+			}
+		}
+	}
+	return FALSE;
+}
+
+/**
+ * Impelements host_t.equals
+ */
+static bool equals(private_host_t *this, private_host_t *other)
+{
+	switch (this->family)
+	{
+		/* IPv4 */
+		case AF_INET:
+		{
+			if ((this->address4.sin_family == other->address4.sin_family) &&
+				(this->address4.sin_addr.s_addr == other->address4.sin_addr.s_addr) &&
+				(this->address4.sin_port == other->address4.sin_port))
+			{
+				return TRUE;	
+			}
+		}
+	}
+	return FALSE;
+}
+
+/**
+ * Implements host_t.destroy
+ */
+static void destroy(private_host_t *this)
+{
+	free(this->string);
+	free(this);
+}
+
+/**
+ * Creates an empty host_t object 
+ */
+static private_host_t *host_create_empty()
+{
+	private_host_t *this = malloc_thing(private_host_t);
+	
+	this->public.get_sockaddr = (sockaddr_t* (*) (host_t*))get_sockaddr;
+	this->public.get_sockaddr_len = (socklen_t*(*) (host_t*))get_sockaddr_len;
+	this->public.clone = (host_t* (*) (host_t*))clone;
+	this->public.get_family = (int (*) (host_t*))get_family;
+	this->public.get_xfrm_addr = (xfrm_address_t (*) (host_t *))get_xfrm_addr;
+	this->public.get_address = (char* (*) (host_t *))get_address;
+	this->public.get_address_as_chunk = (chunk_t (*) (host_t *)) get_address_as_chunk;
+	this->public.get_port = (u_int16_t (*) (host_t *))get_port;
+	this->public.ip_equals = (bool (*) (host_t *,host_t *)) ip_equals;
+	this->public.equals = (bool (*) (host_t *,host_t *)) equals;
+	this->public.is_default_route = (bool (*) (host_t *)) is_default_route;
+	this->public.destroy = (void (*) (host_t*))destroy;
+	
+	this->string = NULL;
+	
+	return this;
+}
+
+/*
+ * Described in header.
+ */
+host_t *host_create(int family, char *address, u_int16_t port)
+{
+	private_host_t *this = host_create_empty();
+	
+	this->family = family;
+
+	switch (family)
+	{
+		/* IPv4 */
+		case AF_INET:
+		{
+			this->address4.sin_family = AF_INET;
+			this->address4.sin_addr.s_addr = inet_addr(address);
+			this->address4.sin_port = htons(port);
+			this->socklen = sizeof(struct sockaddr_in);
+			return &(this->public);
+		}
+		default:
+		{
+			free(this);
+			return NULL;
+
+		}
+	}
+	
+}
+
+/*
+ * Described in header.
+ */
+host_t *host_create_from_chunk(int family, chunk_t address, u_int16_t port)
+{
+	private_host_t *this = host_create_empty();
+	
+	this->family = family;
+	switch (family)
+	{
+		/* IPv4 */
+		case AF_INET:
+		{
+			if (address.len != 4)
+			{
+				break;	
+			}
+			this->address4.sin_family = AF_INET;
+			memcpy(&(this->address4.sin_addr.s_addr),address.ptr,4);
+			this->address4.sin_port = htons(port);
+			this->socklen = sizeof(struct sockaddr_in);
+			return &(this->public);
+		}
+	}
+	free(this);
+	return NULL;
+}
+
+/*
+ * Described in header.
+ */
+host_t *host_create_from_sockaddr(sockaddr_t *sockaddr)
+{
+	chunk_t address;
+	
+	switch (sockaddr->sa_family)
+	{
+		/* IPv4 */
+		case AF_INET:
+		{
+			struct sockaddr_in *sin = (struct sockaddr_in *)sockaddr;
+			address.ptr = (void*)&(sin->sin_addr.s_addr);
+			address.len = 4;
+			return host_create_from_chunk(AF_INET, address, ntohs(sin->sin_port));
+		}
+		default:
+			return NULL;
+	}
+}
+