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/* Copyright (c) 2014, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ADDR_H_
#define ADDR_H_
#include "config.h"
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
/* unix sockets */
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#include "mem_pool.h"
/**
* Opaque structure
*/
typedef struct rspamd_inet_addr_s rspamd_inet_addr_t;
void **rspamd_inet_library_init (void);
void rspamd_inet_library_destroy (void);
/**
* Create new inet address structure based on the address familiy and opaque init pointer
* @param af
* @param init
* @return new inet addr
*/
rspamd_inet_addr_t * rspamd_inet_address_new (int af, const void *init);
/**
* Create new inet address structure from struct sockaddr
* @param sa
* @param slen
* @return
*/
rspamd_inet_addr_t * rspamd_inet_address_from_sa (const struct sockaddr *sa,
socklen_t slen);
/**
* Parse string with ipv6 address of length `len` to `target` which should be
* at least sizeof (in6_addr_t)
* @param text input string
* @param len lenth of `text` (if 0, then `text` must be zero terminated)
* @param target target structure
* @return TRUE if the address has been parsed, otherwise `target` content is undefined
*/
gboolean rspamd_parse_inet_address_ip6 (const guchar *text, gsize len,
gpointer target);
/**
* Parse string with ipv4 address of length `len` to `target` which should be
* at least sizeof (in4_addr_t)
* @param text input string
* @param len lenth of `text` (if 0, then `text` must be zero terminated)
* @param target target structure
* @return TRUE if the address has been parsed, otherwise `target` content is undefined
*/
gboolean rspamd_parse_inet_address_ip4 (const guchar *text, gsize len,
gpointer target);
/**
* Try to parse address from string
* @param target target to fill
* @param src IP string representation
* @return TRUE if addr has been parsed
*/
gboolean rspamd_parse_inet_address (rspamd_inet_addr_t **target,
const char *src,
gsize srclen);
/**
* Returns string representation of inet address
* @param addr
* @return statically allocated string pointer (not thread safe)
*/
const char * rspamd_inet_address_to_string (const rspamd_inet_addr_t *addr);
/**
* Returns port number for the specified inet address in host byte order
* @param addr
* @return
*/
uint16_t rspamd_inet_address_get_port (const rspamd_inet_addr_t *addr);
/**
* Returns address family of inet address
* @param addr
* @return
*/
gint rspamd_inet_address_get_af (const rspamd_inet_addr_t *addr);
/**
* Makes a radix key from inet address
* @param addr
* @param klen
* @return
*/
guchar * rspamd_inet_address_get_radix_key (const rspamd_inet_addr_t *addr, guint *klen);
/**
* Receive data from an unconnected socket and fill the inet_addr structure if needed
* @param fd
* @param buf
* @param len
* @param target
* @return same as recvfrom(2)
*/
gssize rspamd_inet_address_recvfrom (gint fd, void *buf, gsize len, gint fl,
rspamd_inet_addr_t **target);
/**
* Send data via unconnected socket using the specified inet_addr structure
* @param fd
* @param buf
* @param len
* @param target
* @return
*/
gssize rspamd_inet_address_sendto (gint fd, const void *buf, gsize len, gint fl,
const rspamd_inet_addr_t *addr);
/**
* Set port for inet address
*/
void rspamd_inet_address_set_port (rspamd_inet_addr_t *addr, uint16_t port);
/**
* Connect to inet_addr address
* @param addr
* @param async perform operations asynchronously
* @return newly created and connected socket
*/
int rspamd_inet_address_connect (const rspamd_inet_addr_t *addr, gint type,
gboolean async);
/**
* Listen on a specified inet address
* @param addr
* @param type
* @param async
* @return
*/
int rspamd_inet_address_listen (const rspamd_inet_addr_t *addr, gint type,
gboolean async);
/**
* Check whether specified ip is valid (not INADDR_ANY or INADDR_NONE) for ipv4 or ipv6
* @param ptr pointer to struct in_addr or struct in6_addr
* @param af address family (AF_INET or AF_INET6)
* @return TRUE if the address is valid
*/
gboolean rspamd_ip_is_valid (const rspamd_inet_addr_t *addr);
/**
* Accept from listening socket filling addr structure
* @param sock listening socket
* @param addr allocated inet addr structur
* @return
*/
gint rspamd_accept_from_socket (gint sock, rspamd_inet_addr_t **addr);
/**
* Parse host[:port[:priority]] line
* @param ina host address
* @param port port
* @param priority priority
* @return TRUE if string was parsed
*/
gboolean rspamd_parse_host_port_priority (const gchar *str,
GPtrArray **addrs,
guint *priority, gchar **name, guint default_port,
rspamd_mempool_t *pool);
/**
* Destroy the specified IP address
* @param addr
*/
void rspamd_inet_address_destroy (rspamd_inet_addr_t *addr);
/**
* Apply the specified mask to an address (ignored for AF_UNIX)
* @param addr
* @param mask
*/
void rspamd_inet_address_apply_mask (rspamd_inet_addr_t *addr, guint mask);
/**
* Compare a1 and a2 and return value >0, ==0 and <0 if a1 is more, equal or less than a2 correspondingly
* @param a1
* @param a2
* @return
*/
gint rspamd_inet_address_compare (const rspamd_inet_addr_t *a1,
const rspamd_inet_addr_t *a2);
/**
* Utility function to compare addresses by in g_ptr_array
* @param a1
* @param a2
* @return
*/
gint rspamd_inet_address_compare_ptr (gconstpointer a1,
gconstpointer a2);
/**
* Performs deep copy of rspamd inet addr
* @param addr
* @return
*/
rspamd_inet_addr_t *rspamd_inet_address_copy (const rspamd_inet_addr_t *addr);
/**
* Returns hash for inet address
*/
guint rspamd_inet_address_hash (gconstpointer a);
/**
* Returns true if two address are equal
*/
gboolean rspamd_inet_address_equal (gconstpointer a, gconstpointer b);
/**
* Returns TRUE if an address belongs to some local address
*/
gboolean rspamd_inet_address_is_local (const rspamd_inet_addr_t *addr);
#endif /* ADDR_H_ */
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