lib/util/util_net.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Utility functions for Samba
   4    Copyright (C) Andrew Tridgell 1992-1999
   5    Copyright (C) Jelmer Vernooij 2005
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef _SAMBA_UTIL_NET_H_
  22 #define _SAMBA_UTIL_NET_H_
  23
  24 #include "system/network.h"
  25
  26 /* The following definitions come from lib/util/util_net.c  */
  27
  28 void zero_sockaddr(struct sockaddr_storage *pss);
  29
  30 bool interpret_string_addr_internal(struct addrinfo **ppres,
  31                                     const char *str, int flags);
  32
  33 bool interpret_string_addr(struct sockaddr_storage *pss,
  34                            const char *str,
  35                            int flags);
  36
  37 /*******************************************************************
  38  Map a text hostname or IP address (IPv4 or IPv6) into a
  39  struct sockaddr_storage. Version that prefers IPv4.
  40 ******************************************************************/
  41
  42 bool interpret_string_addr_prefer_ipv4(struct sockaddr_storage *pss,
  43                                        const char *str,
  44                                        int flags);
  45
  46 void set_sockaddr_port(struct sockaddr *psa, uint16_t port);
  47
  48 /**
  49  Check if an IP is the 0.0.0.0.
  50 **/
  51 _PUBLIC_ bool is_zero_ip_v4(struct in_addr ip);
  52
  53 void in_addr_to_sockaddr_storage(struct sockaddr_storage *ss,
  54                                  struct in_addr ip);
  55 #if defined(HAVE_IPV6)
  56 /**
  57  * Convert an IPv6 struct in_addr to a struct sockaddr_storage.
  58  */
  59 void in6_addr_to_sockaddr_storage(struct sockaddr_storage *ss,
  60                                   struct in6_addr ip);
  61 #endif
  62 /**
  63  Are two IPs on the same subnet?
  64 **/
  65 _PUBLIC_ bool same_net_v4(struct in_addr ip1,struct in_addr ip2,struct in_addr mask);
  66
  67 /**
  68  Return true if a string could be a pure IP address.
  69 **/
  70 _PUBLIC_ bool is_ipaddress(const char *str);
  71
  72 bool is_broadcast_addr(const struct sockaddr *pss);
  73 bool is_loopback_ip_v4(struct in_addr ip);
  74 bool is_loopback_addr(const struct sockaddr *pss);
  75 bool is_zero_addr(const struct sockaddr_storage *pss);
  76 void zero_ip_v4(struct in_addr *ip);
  77 bool is_linklocal_addr(const struct sockaddr_storage *pss);
  78 /**
  79  Interpret an internet address or name into an IP address in 4 byte form.
  80 **/
  81 _PUBLIC_ uint32_t interpret_addr(const char *str);
  82
  83 /**
  84  A convenient addition to interpret_addr().
  85 **/
  86 _PUBLIC_ struct in_addr interpret_addr2(const char *str);
  87
  88 _PUBLIC_ bool is_ipaddress_v4(const char *str);
  89 _PUBLIC_ bool is_ipv6_literal(const char *str);
  90 _PUBLIC_ bool is_ipaddress_v6(const char *str);
  91
  92 bool is_address_any(const struct sockaddr *psa);
  93 bool same_net(const struct sockaddr *ip1,
  94               const struct sockaddr *ip2,
  95               const struct sockaddr *mask);
  96 bool sockaddr_equal(const struct sockaddr *ip1,
  97                     const struct sockaddr *ip2);
  98
  99 bool is_address_any(const struct sockaddr *psa);
 100 uint16_t get_sockaddr_port(const struct sockaddr_storage *pss);
 101 char *print_sockaddr_len(char *dest,
 102                          size_t destlen,
 103                          const struct sockaddr *psa,
 104                          socklen_t psalen);
 105 char *print_sockaddr(char *dest,
 106                         size_t destlen,
 107                         const struct sockaddr_storage *psa);
 108 char *print_canonical_sockaddr(TALLOC_CTX *ctx,
 109                         const struct sockaddr_storage *pss);
 110 int get_socket_port(int fd);
 111 const char *client_socket_addr(int fd, char *addr, size_t addr_len);
 112
 113 void set_socket_options(int fd, const char *options);
 114
 115 #endif /* _SAMBA_UTIL_NET_H_ */