GNU Wget 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.
+ (at your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
You should have received a copy of the GNU General Public License
along with Wget; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+In addition, as a special exception, the Free Software Foundation
+gives permission to link the code of its release of Wget with the
+OpenSSL project's "OpenSSL" library (or with modified versions of it
+that use the same license as the "OpenSSL" library), and distribute
+the linked executables. You must obey the GNU General Public License
+in all respects for all of the code used other than "OpenSSL". If you
+modify this file, you may extend this exception to your version of the
+file, but you are not obligated to do so. If you do not wish to do
+so, delete this exception statement from your version. */
#ifndef HOST_H
#define HOST_H
+#ifdef WINDOWS
+# include <winsock.h>
+#else
+# include <netdb.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#endif
+#endif
+
struct url;
struct address_list;
-/* Function declarations */
-struct address_list *lookup_host PARAMS ((const char *, int));
-char *herrmsg PARAMS ((int));
+/* This struct defines an IP address, tagged with family type. */
+
+typedef struct {
+ /* Address type. */
+ enum {
+ IPV4_ADDRESS
+#ifdef ENABLE_IPV6
+ , IPV6_ADDRESS
+#endif /* ENABLE_IPV6 */
+ } type;
+
+ /* Address data union: ipv6 contains IPv6-related data (address and
+ scope), and ipv4 contains the IPv4 address. */
+ union {
+#ifdef ENABLE_IPV6
+ struct {
+ struct in6_addr addr;
+# ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
+ unsigned int scope_id;
+# endif
+ } ipv6;
+#endif /* ENABLE_IPV6 */
+ struct {
+ struct in_addr addr;
+ } ipv4;
+ } u;
+} ip_address;
+
+/* Because C doesn't support anonymous unions, access to ip_address
+ elements is unwieldy. Hence the accessors.
+
+ The _ADDR accessors return the address as the struct in_addr or
+ in6_addr. The _DATA accessor returns a pointer to the address data
+ -- pretty much the same as the above, but cast to void*. The
+ _SCOPE accessor returns the address's scope_id, and makes sense
+ only when IPv6 and HAVE_SOCKADDR_IN6_SCOPE_ID are both defined. */
+
+#define ADDRESS_IPV4_IN_ADDR(x) ((x)->u.ipv4.addr)
+/* Don't use &x->u.ipv4.addr.s_addr because it can be #defined to a
+ bitfield, which you can't take an address of. */
+#define ADDRESS_IPV4_DATA(x) ((void *)&(x)->u.ipv4.addr)
+
+#define ADDRESS_IPV6_IN6_ADDR(x) ((x)->u.ipv6.addr)
+#define ADDRESS_IPV6_DATA(x) ((void *)&(x)->u.ipv6.addr)
+#define ADDRESS_IPV6_SCOPE(x) ((x)->u.ipv6.scope_id)
+
+enum {
+ LH_SILENT = 1,
+ LH_BIND = 2,
+ LH_REFRESH = 4
+};
+struct address_list *lookup_host (const char *, int);
-void address_list_get_bounds PARAMS ((struct address_list *, int *, int *));
-void address_list_copy_one PARAMS ((struct address_list *, int,
- unsigned char *));
-int address_list_match_all PARAMS ((struct address_list *,
- struct address_list *));
-void address_list_set_faulty PARAMS ((struct address_list *, int));
-void address_list_release PARAMS ((struct address_list *));
+void address_list_get_bounds (const struct address_list *, int *, int *);
+const ip_address *address_list_address_at (const struct address_list *, int);
+int address_list_contains (const struct address_list *, const ip_address *);
+void address_list_set_faulty (struct address_list *, int);
+void address_list_set_connected (struct address_list *);
+int address_list_connected_p (const struct address_list *);
+void address_list_release (struct address_list *);
-/* This was originally going to be a macro, but then every caller
- would have to #include the netinet stuff. */
-char *pretty_print_address PARAMS ((const void *));
+const char *pretty_print_address (const ip_address *);
+#ifdef ENABLE_IPV6
+int is_valid_ipv6_address (const char *, const char *);
+#endif
-int accept_domain PARAMS ((struct url *));
-int sufmatch PARAMS ((const char **, const char *));
+int accept_domain (struct url *);
+int sufmatch (const char **, const char *);
-void host_cleanup PARAMS ((void));
+void host_cleanup (void);
#endif /* HOST_H */