/* Host name resolution and matching.
- Copyright (C) 1995, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GNU Wget.
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
+the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
GNU General Public License for more details.
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.
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the Free Software Foundation
gives permission to link the code of its release of Wget with 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. */
-#include <config.h>
-
-#ifndef WINDOWS
-#include <netdb.h>
-#endif
+#include "wget.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
-#include "wget.h"
#include "utils.h"
#include "host.h"
#include "url.h"
#include "hash.h"
-#include "connect.h" /* for socket_has_inet6 */
#ifndef NO_ADDRESS
# define NO_ADDRESS NO_DATA
lookup_host for details. */
struct address_list {
- int count; /* number of adrresses */
- ip_address *addresses; /* pointer to the string of addresses */
+ int count; /* number of adrresses */
+ ip_address *addresses; /* pointer to the string of addresses */
- int faulty; /* number of addresses known not to work. */
- bool connected; /* whether we were able to connect to
- one of the addresses in the list,
- at least once. */
+ int faulty; /* number of addresses known not to work. */
+ bool connected; /* whether we were able to connect to
+ one of the addresses in the list,
+ at least once. */
- int refcount; /* reference count; when it drops to
- 0, the entry is freed. */
+ int refcount; /* reference count; when it drops to
+ 0, the entry is freed. */
};
/* Get the bounds of the address list. */
address_list_contains (const struct address_list *al, const ip_address *ip)
{
int i;
- switch (ip->type)
+ switch (ip->family)
{
- case IPV4_ADDRESS:
+ case AF_INET:
for (i = 0; i < al->count; i++)
- {
- ip_address *cur = al->addresses + i;
- if (cur->type == IPV4_ADDRESS
- && (ADDRESS_IPV4_IN_ADDR (cur).s_addr
- ==
- ADDRESS_IPV4_IN_ADDR (ip).s_addr))
- return true;
- }
+ {
+ ip_address *cur = al->addresses + i;
+ if (cur->family == AF_INET
+ && (cur->data.d4.s_addr == ip->data.d4.s_addr))
+ return true;
+ }
return false;
#ifdef ENABLE_IPV6
- case IPV6_ADDRESS:
+ case AF_INET6:
for (i = 0; i < al->count; i++)
- {
- ip_address *cur = al->addresses + i;
- if (cur->type == IPV6_ADDRESS
+ {
+ ip_address *cur = al->addresses + i;
+ if (cur->family == AF_INET6
#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
- && ADDRESS_IPV6_SCOPE (cur) == ADDRESS_IPV6_SCOPE (ip)
+ && cur->ipv6_scope == ip->ipv6_scope
#endif
- && IN6_ARE_ADDR_EQUAL (&ADDRESS_IPV6_IN6_ADDR (cur),
- &ADDRESS_IPV6_IN6_ADDR (ip)))
- return true;
- }
+ && IN6_ARE_ADDR_EQUAL (&cur->data.d6, &ip->data.d6))
+ return true;
+ }
return false;
#endif /* ENABLE_IPV6 */
default:
for (ptr = ai; ptr != NULL; ptr = ptr->ai_next)
if (ptr->ai_family == AF_INET6)
{
- const struct sockaddr_in6 *sin6 =
- (const struct sockaddr_in6 *)ptr->ai_addr;
- ip->type = IPV6_ADDRESS;
- ADDRESS_IPV6_IN6_ADDR (ip) = sin6->sin6_addr;
+ const struct sockaddr_in6 *sin6 =
+ (const struct sockaddr_in6 *)ptr->ai_addr;
+ ip->family = AF_INET6;
+ ip->data.d6 = sin6->sin6_addr;
#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
- ADDRESS_IPV6_SCOPE (ip) = sin6->sin6_scope_id;
+ ip->ipv6_scope = sin6->sin6_scope_id;
#endif
- ++ip;
+ ++ip;
}
else if (ptr->ai_family == AF_INET)
{
- const struct sockaddr_in *sin =
- (const struct sockaddr_in *)ptr->ai_addr;
- ip->type = IPV4_ADDRESS;
- ADDRESS_IPV4_IN_ADDR (ip) = sin->sin_addr;
- ++ip;
+ const struct sockaddr_in *sin =
+ (const struct sockaddr_in *)ptr->ai_addr;
+ ip->family = AF_INET;
+ ip->data.d4 = sin->sin_addr;
+ ++ip;
}
assert (ip - al->addresses == cnt);
return al;
}
-#define IS_IPV4(addr) (((const ip_address *) addr)->type == IPV4_ADDRESS)
+#define IS_IPV4(addr) (((const ip_address *) addr)->family == AF_INET)
-/* Compare two IP addresses by type, giving preference to the IPv4
+/* Compare two IP addresses by family, giving preference to the IPv4
address (sorting it first). In other words, return -1 if ADDR1 is
IPv4 and ADDR2 is IPv6, +1 if ADDR1 is IPv6 and ADDR2 is IPv4, and
0 otherwise.
return !IS_IPV4 (addr1) - !IS_IPV4 (addr2);
}
-#define IS_IPV6(addr) (((const ip_address *) addr)->type == IPV6_ADDRESS)
+#define IS_IPV6(addr) (((const ip_address *) addr)->family == AF_INET6)
/* Like the above, but give preference to the IPv6 address. */
for (i = 0; i < count; i++)
{
ip_address *ip = &al->addresses[i];
- ip->type = IPV4_ADDRESS;
- memcpy (ADDRESS_IPV4_DATA (ip), vec[i], 4);
+ ip->family = AF_INET;
+ memcpy (IP_INADDR_DATA (ip), vec[i], 4);
}
return al;
{
--al->refcount;
DEBUGP (("Releasing 0x%0*lx (new refcount %d).\n", PTR_FORMAT (al),
- al->refcount));
+ al->refcount));
if (al->refcount <= 0)
{
DEBUGP (("Deleting unused 0x%0*lx.\n", PTR_FORMAT (al)));
static int
getaddrinfo_with_timeout (const char *node, const char *service,
- const struct addrinfo *hints, struct addrinfo **res,
- double timeout)
+ const struct addrinfo *hints, struct addrinfo **res,
+ double timeout)
{
struct gaiwt_context ctx;
ctx.node = node;
#endif /* ENABLE_IPV6 */
\f
-/* Pretty-print ADDR. When compiled without IPv6, this is the same as
- inet_ntoa. With IPv6, it either prints an IPv6 address or an IPv4
- address. */
+/* Return a textual representation of ADDR, i.e. the dotted quad for
+ IPv4 addresses, and the colon-separated list of hex words (with all
+ zeros omitted, etc.) for IPv6 addresses. */
const char *
-pretty_print_address (const ip_address *addr)
+print_address (const ip_address *addr)
{
- switch (addr->type)
- {
- case IPV4_ADDRESS:
- return inet_ntoa (ADDRESS_IPV4_IN_ADDR (addr));
#ifdef ENABLE_IPV6
- case IPV6_ADDRESS:
- {
- static char buf[64];
- if (!inet_ntop (AF_INET6, &ADDRESS_IPV6_IN6_ADDR (addr),
- buf, sizeof (buf)))
- snprintf (buf, sizeof buf, "[error: %s]", strerror (errno));
- buf[sizeof (buf) - 1] = '\0';
- return buf;
- }
+ static char buf[64];
+ if (!inet_ntop (addr->family, IP_INADDR_DATA (addr), buf, sizeof buf))
+ snprintf (buf, sizeof buf, "<error: %s>", strerror (errno));
+ return buf;
+#else
+ return inet_ntoa (addr->data.d4);
#endif
- }
- abort ();
}
-/* The following two functions were adapted from glibc. */
+/* The following two functions were adapted from glibc's
+ implementation of inet_pton, written by Paul Vixie. */
static bool
is_valid_ipv4_address (const char *str, const char *end)
int ch = *str++;
if (ch >= '0' && ch <= '9')
- {
- val = val * 10 + (ch - '0');
-
- if (val > 255)
- return false;
- if (!saw_digit)
- {
- if (++octets > 4)
- return false;
- saw_digit = true;
- }
- }
+ {
+ val = val * 10 + (ch - '0');
+
+ if (val > 255)
+ return false;
+ if (!saw_digit)
+ {
+ if (++octets > 4)
+ return false;
+ saw_digit = true;
+ }
+ }
else if (ch == '.' && saw_digit)
- {
- if (octets == 4)
- return false;
- val = 0;
- saw_digit = false;
- }
+ {
+ if (octets == 4)
+ return false;
+ val = 0;
+ saw_digit = false;
+ }
else
- return false;
+ return false;
}
if (octets < 4)
return false;
{
++str;
if (str == end || *str != ':')
- return false;
+ return false;
}
curtok = str;
int ch = *str++;
/* if ch is a number, add it to val. */
- if (ISXDIGIT (ch))
- {
- val <<= 4;
- val |= XDIGIT_TO_NUM (ch);
- if (val > 0xffff)
- return false;
- saw_xdigit = true;
- continue;
- }
+ if (c_isxdigit (ch))
+ {
+ val <<= 4;
+ val |= XDIGIT_TO_NUM (ch);
+ if (val > 0xffff)
+ return false;
+ saw_xdigit = true;
+ continue;
+ }
/* if ch is a colon ... */
if (ch == ':')
- {
- curtok = str;
- if (!saw_xdigit)
- {
- if (colonp != NULL)
- return false;
- colonp = str + tp;
- continue;
- }
- else if (str == end)
- return false;
- if (tp > ns_in6addrsz - ns_int16sz)
- return false;
- tp += ns_int16sz;
- saw_xdigit = false;
- val = 0;
- continue;
- }
+ {
+ curtok = str;
+ if (!saw_xdigit)
+ {
+ if (colonp != NULL)
+ return false;
+ colonp = str + tp;
+ continue;
+ }
+ else if (str == end)
+ return false;
+ if (tp > ns_in6addrsz - ns_int16sz)
+ return false;
+ tp += ns_int16sz;
+ saw_xdigit = false;
+ val = 0;
+ continue;
+ }
/* if ch is a dot ... */
if (ch == '.' && (tp <= ns_in6addrsz - ns_inaddrsz)
- && is_valid_ipv4_address (curtok, end) == 1)
- {
- tp += ns_inaddrsz;
- saw_xdigit = false;
- break;
- }
+ && is_valid_ipv4_address (curtok, end) == 1)
+ {
+ tp += ns_inaddrsz;
+ saw_xdigit = false;
+ break;
+ }
return false;
}
if (saw_xdigit)
{
if (tp > ns_in6addrsz - ns_int16sz)
- return false;
+ return false;
tp += ns_int16sz;
}
if (colonp != NULL)
{
if (tp == ns_in6addrsz)
- return false;
+ return false;
tp = ns_in6addrsz;
}
int i;
debug_logprintf ("Caching %s =>", host);
for (i = 0; i < al->count; i++)
- debug_logprintf (" %s", pretty_print_address (al->addresses + i));
+ debug_logprintf (" %s", print_address (al->addresses + i));
debug_logprintf ("\n");
}
}
LH_SILENT - don't print the "resolving ... done" messages.
LH_BIND - resolve addresses for use with bind, which under
IPv6 means to use AI_PASSIVE flag to getaddrinfo.
- Passive lookups are not cached under IPv6.
+ Passive lookups are not cached under IPv6.
LH_REFRESH - if HOST is cached, remove the entry from the cache
and resolve it anew. */
uint32_t addr_ipv4 = (uint32_t)inet_addr (host);
if (addr_ipv4 != (uint32_t) -1)
{
- /* No need to cache host->addr relation, just return the
- address. */
- char *vec[2];
- vec[0] = (char *)&addr_ipv4;
- vec[1] = NULL;
- return address_list_from_ipv4_addresses (vec);
+ /* No need to cache host->addr relation, just return the
+ address. */
+ char *vec[2];
+ vec[0] = (char *)&addr_ipv4;
+ vec[1] = NULL;
+ return address_list_from_ipv4_addresses (vec);
}
}
#else /* ENABLE_IPV6 */
if (use_cache)
{
if (!(flags & LH_REFRESH))
- {
- al = cache_query (host);
- if (al)
- return al;
- }
+ {
+ al = cache_query (host);
+ if (al)
+ return al;
+ }
else
- cache_remove (host);
+ cache_remove (host);
}
/* No luck with the cache; resolve HOST. */
hints.ai_family = AF_INET6;
else
/* We tried using AI_ADDRCONFIG, but removed it because: it
- misinterprets IPv6 loopbacks, it is broken on AIX 5.1, and
- it's unneeded since we sort the addresses anyway. */
- hints.ai_family = AF_UNSPEC;
+ misinterprets IPv6 loopbacks, it is broken on AIX 5.1, and
+ it's unneeded since we sort the addresses anyway. */
+ hints.ai_family = AF_UNSPEC;
if (flags & LH_BIND)
hints.ai_flags |= AI_PASSIVE;
#ifdef AI_NUMERICHOST
if (numeric_address)
{
- /* Where available, the AI_NUMERICHOST hint can prevent costly
- access to DNS servers. */
- hints.ai_flags |= AI_NUMERICHOST;
- timeout = 0; /* no timeout needed when "resolving"
- numeric hosts -- avoid setting up
- signal handlers and such. */
+ /* Where available, the AI_NUMERICHOST hint can prevent costly
+ access to DNS servers. */
+ hints.ai_flags |= AI_NUMERICHOST;
+ timeout = 0; /* no timeout needed when "resolving"
+ numeric hosts -- avoid setting up
+ signal handlers and such. */
}
#endif
err = getaddrinfo_with_timeout (host, NULL, &hints, &res, timeout);
if (err != 0 || res == NULL)
{
- if (!silent)
- logprintf (LOG_VERBOSE, _("failed: %s.\n"),
- err != EAI_SYSTEM ? gai_strerror (err) : strerror (errno));
- return NULL;
+ if (!silent)
+ logprintf (LOG_VERBOSE, _("failed: %s.\n"),
+ err != EAI_SYSTEM ? gai_strerror (err) : strerror (errno));
+ return NULL;
}
al = address_list_from_addrinfo (res);
freeaddrinfo (res);
if (!al)
{
- logprintf (LOG_VERBOSE,
- _("failed: No IPv4/IPv6 addresses for host.\n"));
- return NULL;
+ logprintf (LOG_VERBOSE,
+ _("failed: No IPv4/IPv6 addresses for host.\n"));
+ return NULL;
}
/* Reorder addresses so that IPv4 ones (or IPv6 ones, as per
the addresses with the same family is undisturbed. */
if (al->count > 1 && opt.prefer_family != prefer_none)
stable_sort (al->addresses, al->count, sizeof (ip_address),
- opt.prefer_family == prefer_ipv4
- ? cmp_prefer_ipv4 : cmp_prefer_ipv6);
+ opt.prefer_family == prefer_ipv4
+ ? cmp_prefer_ipv4 : cmp_prefer_ipv6);
}
#else /* not ENABLE_IPV6 */
{
struct hostent *hptr = gethostbyname_with_timeout (host, timeout);
if (!hptr)
{
- if (!silent)
- {
- if (errno != ETIMEDOUT)
- logprintf (LOG_VERBOSE, _("failed: %s.\n"),
- host_errstr (h_errno));
- else
- logputs (LOG_VERBOSE, _("failed: timed out.\n"));
- }
- return NULL;
+ if (!silent)
+ {
+ if (errno != ETIMEDOUT)
+ logprintf (LOG_VERBOSE, _("failed: %s.\n"),
+ host_errstr (h_errno));
+ else
+ logputs (LOG_VERBOSE, _("failed: timed out.\n"));
+ }
+ return NULL;
}
/* Do older systems have h_addr_list? */
al = address_list_from_ipv4_addresses (hptr->h_addr_list);
int i;
int printmax = al->count <= 3 ? al->count : 3;
for (i = 0; i < printmax; i++)
- {
- logprintf (LOG_VERBOSE, "%s",
- pretty_print_address (al->addresses + i));
- if (i < printmax - 1)
- logputs (LOG_VERBOSE, ", ");
- }
+ {
+ logputs (LOG_VERBOSE, print_address (al->addresses + i));
+ if (i < printmax - 1)
+ logputs (LOG_VERBOSE, ", ");
+ }
if (printmax != al->count)
- logputs (LOG_VERBOSE, ", ...");
+ logputs (LOG_VERBOSE, ", ...");
logputs (LOG_VERBOSE, "\n");
}
if (opt.domains)
{
if (!sufmatch ((const char **)opt.domains, u->host))
- return false;
+ return false;
}
if (opt.exclude_domains)
{
if (sufmatch ((const char **)opt.exclude_domains, u->host))
- return false;
+ return false;
}
return true;
}
for (i = 0; list[i]; i++)
{
for (j = strlen (list[i]), k = lw; j >= 0 && k >= 0; j--, k--)
- if (TOLOWER (list[i][j]) != TOLOWER (what[k]))
- break;
+ if (c_tolower (list[i][j]) != c_tolower (what[k]))
+ break;
/* The domain must be first to reach to beginning. */
if (j == -1)
- return true;
+ return true;
}
return false;
}
-static int
-host_cleanup_mapper (void *key, void *value, void *arg_ignored)
-{
- struct address_list *al;
-
- xfree (key); /* host */
-
- al = (struct address_list *)value;
- assert (al->refcount == 1);
- address_list_delete (al);
-
- return 0;
-}
-
void
host_cleanup (void)
{
if (host_name_addresses_map)
{
- hash_table_map (host_name_addresses_map, host_cleanup_mapper, NULL);
+ hash_table_iterator iter;
+ for (hash_table_iterate (host_name_addresses_map, &iter);
+ hash_table_iter_next (&iter);
+ )
+ {
+ char *host = iter.key;
+ struct address_list *al = iter.value;
+ xfree (host);
+ assert (al->refcount == 1);
+ address_list_delete (al);
+ }
hash_table_destroy (host_name_addresses_map);
host_name_addresses_map = NULL;
}
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