| 1 | /* Declarations for host.c
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| 2 | Copyright (C) 1995, 1996, 1997, 2001 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GNU Wget.
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| 5 |
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| 6 | GNU Wget is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | GNU Wget is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with Wget; if not, write to the Free Software
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 |
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| 20 | In addition, as a special exception, the Free Software Foundation
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| 21 | gives permission to link the code of its release of Wget with the
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| 22 | OpenSSL project's "OpenSSL" library (or with modified versions of it
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| 23 | that use the same license as the "OpenSSL" library), and distribute
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| 24 | the linked executables. You must obey the GNU General Public License
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| 25 | in all respects for all of the code used other than "OpenSSL". If you
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| 26 | modify this file, you may extend this exception to your version of the
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| 27 | file, but you are not obligated to do so. If you do not wish to do
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| 28 | so, delete this exception statement from your version. */
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| 29 |
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| 30 | #ifndef HOST_H
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| 31 | #define HOST_H
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| 32 |
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| 33 | #ifdef WINDOWS
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| 34 | # include <winsock.h>
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| 35 | #else
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| 36 | # include <netdb.h>
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| 37 | # include <sys/socket.h>
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| 38 | # include <netinet/in.h>
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| 39 | #ifndef __BEOS__
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| 40 | # include <arpa/inet.h>
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| 41 | #endif
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| 42 | #endif
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| 43 |
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| 44 | struct url;
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| 45 | struct address_list;
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| 46 |
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| 47 | /* This struct defines an IP address, tagged with family type. */
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| 48 |
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| 49 | typedef struct {
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| 50 | /* Address type. */
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| 51 | enum {
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| 52 | IPV4_ADDRESS
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| 53 | #ifdef ENABLE_IPV6
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| 54 | , IPV6_ADDRESS
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| 55 | #endif /* ENABLE_IPV6 */
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| 56 | } type;
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| 57 |
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| 58 | /* Address data union: ipv6 contains IPv6-related data (address and
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| 59 | scope), and ipv4 contains the IPv4 address. */
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| 60 | union {
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| 61 | #ifdef ENABLE_IPV6
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| 62 | struct {
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| 63 | struct in6_addr addr;
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| 64 | # ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
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| 65 | unsigned int scope_id;
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| 66 | # endif
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| 67 | } ipv6;
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| 68 | #endif /* ENABLE_IPV6 */
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| 69 | struct {
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| 70 | struct in_addr addr;
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| 71 | } ipv4;
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| 72 | } u;
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| 73 | } ip_address;
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| 74 |
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| 75 | /* Because C doesn't support anonymous unions, access to ip_address
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| 76 | elements is unwieldy. Hence the accessors.
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| 77 |
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| 78 | The _ADDR accessors return the address as the struct in_addr or
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| 79 | in6_addr. The _DATA accessor returns a pointer to the address data
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| 80 | -- pretty much the same as the above, but cast to void*. The
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| 81 | _SCOPE accessor returns the address's scope_id, and makes sense
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| 82 | only when IPv6 and HAVE_SOCKADDR_IN6_SCOPE_ID are both defined. */
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| 83 |
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| 84 | #define ADDRESS_IPV4_IN_ADDR(x) ((x)->u.ipv4.addr)
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| 85 | /* Don't use &x->u.ipv4.addr.s_addr because it can be #defined to a
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| 86 | bitfield, which you can't take an address of. */
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| 87 | #define ADDRESS_IPV4_DATA(x) ((void *)&(x)->u.ipv4.addr)
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| 88 |
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| 89 | #define ADDRESS_IPV6_IN6_ADDR(x) ((x)->u.ipv6.addr)
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| 90 | #define ADDRESS_IPV6_DATA(x) ((void *)&(x)->u.ipv6.addr)
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| 91 | #define ADDRESS_IPV6_SCOPE(x) ((x)->u.ipv6.scope_id)
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| 92 |
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| 93 | enum {
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| 94 | LH_SILENT = 1,
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| 95 | LH_BIND = 2,
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| 96 | LH_REFRESH = 4
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| 97 | };
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| 98 | struct address_list *lookup_host PARAMS ((const char *, int));
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| 99 |
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| 100 | void address_list_get_bounds PARAMS ((const struct address_list *,
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| 101 | int *, int *));
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| 102 | const ip_address *address_list_address_at PARAMS ((const struct address_list *,
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| 103 | int));
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| 104 | int address_list_contains PARAMS ((const struct address_list *, const ip_address *));
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| 105 | void address_list_set_faulty PARAMS ((struct address_list *, int));
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| 106 | void address_list_set_connected PARAMS ((struct address_list *));
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| 107 | int address_list_connected_p PARAMS ((const struct address_list *));
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| 108 | void address_list_release PARAMS ((struct address_list *));
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| 109 |
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| 110 | const char *pretty_print_address PARAMS ((const ip_address *));
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| 111 | #ifdef ENABLE_IPV6
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| 112 | int is_valid_ipv6_address PARAMS ((const char *, const char *));
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| 113 | #endif
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| 114 |
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| 115 | int accept_domain PARAMS ((struct url *));
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| 116 | int sufmatch PARAMS ((const char **, const char *));
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| 117 |
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| 118 | void host_cleanup PARAMS ((void));
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| 119 |
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| 120 | #endif /* HOST_H */
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