2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file hello/address.c
23 * @brief helper functions for handling addresses
24 * @author Christian Grothoff
27 #include "gnunet_hello_lib.h"
28 #include "gnunet_util_lib.h"
32 * Allocate an address struct.
34 * @param peer the peer
35 * @param transport_name plugin name
36 * @param address binary address
37 * @param address_length number of bytes in 'address'
38 * @return the address struct
40 struct GNUNET_HELLO_Address *
41 GNUNET_HELLO_address_allocate (const struct GNUNET_PeerIdentity *peer,
42 const char *transport_name, const void *address,
43 size_t address_length)
45 struct GNUNET_HELLO_Address *addr;
49 GNUNET_assert (transport_name != NULL);
51 slen = strlen (transport_name) + 1;
53 GNUNET_malloc (sizeof (struct GNUNET_HELLO_Address) + address_length +
56 addr->address = &addr[1];
57 end = (char *) &addr[1];
58 memcpy (end, address, address_length);
59 addr->address_length = address_length;
60 addr->transport_name = &end[address_length];
61 memcpy (&end[address_length], transport_name, slen);
67 * Get the size of an address struct.
69 * @param address address
73 GNUNET_HELLO_address_get_size (const struct GNUNET_HELLO_Address * address)
75 return sizeof (struct GNUNET_HELLO_Address) + address->address_length +
76 strlen (address->transport_name) + 1;
81 * Copy an address struct.
83 * @param address address to copy
84 * @return a copy of the address struct
86 struct GNUNET_HELLO_Address *
87 GNUNET_HELLO_address_copy (const struct GNUNET_HELLO_Address *address)
89 return GNUNET_HELLO_address_allocate (&address->peer, address->transport_name,
91 address->address_length);
96 * Compare two addresses. Does NOT compare the peer identity,
97 * that is assumed already to match!
99 * @param a1 first address
100 * @param a2 second address
101 * @return 0 if the addresses are equal, -1 if a1<a2, 1 if a1>a2.
104 GNUNET_HELLO_address_cmp (const struct GNUNET_HELLO_Address *a1,
105 const struct GNUNET_HELLO_Address *a2)
109 ret = strcmp (a1->transport_name, a2->transport_name);
112 if (a1->address_length < a2->address_length)
114 if (a1->address_length > a2->address_length)
116 return memcmp (a1->address, a1->address, a1->address_length);
120 /* end of address.c */