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/*
* Copyright (C) 2022 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebKitOverridingResolver.h"
#include <wtf/HashSet.h>
#include <wtf/glib/GUniquePtr.h>
#include <wtf/glib/WTFGType.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
typedef struct {
GRefPtr<GResolver> wrappedResolver;
HashSet<String> localhostAliases;
GRefPtr<GInetAddress> ipv4LoopbackAddress;
GRefPtr<GInetAddress> ipv6LoopbackAddress;
} WebKitOverridingResolverPrivate;
struct _WebKitOverridingResolver {
GResolver parentInstance;
WebKitOverridingResolverPrivate* priv;
};
struct _WebKitOverridingResolverClass {
GResolverClass parentClass;
};
WEBKIT_DEFINE_TYPE(WebKitOverridingResolver, webkit_overriding_resolver, G_TYPE_RESOLVER)
static GList* createLoobackAddressList(WebKitOverridingResolver* resolver)
{
GList* list = nullptr;
list = g_list_append(list, g_object_ref(resolver->priv->ipv4LoopbackAddress.get()));
list = g_list_append(list, g_object_ref(resolver->priv->ipv6LoopbackAddress.get()));
return list;
}
static GList* webkitOverridingResolverLookupByName(GResolver* resolver, const char* hostname, GCancellable* cancellable, GError** error)
{
auto* self = WEBKIT_OVERRIDING_RESOLVER(resolver);
if (self->priv->localhostAliases.contains(String::fromUTF8(hostname)))
return createLoobackAddressList(self);
return g_resolver_lookup_by_name(self->priv->wrappedResolver.get(), hostname, cancellable, error);
}
static void webkitOverridingResolverLookupByNameAsync(GResolver* resolver, const char* hostname, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer userData)
{
auto* self = WEBKIT_OVERRIDING_RESOLVER(resolver);
if (self->priv->localhostAliases.contains(String::fromUTF8(hostname))) {
GRefPtr<GTask> task = adoptGRef(g_task_new(resolver, cancellable, callback, userData));
g_task_return_pointer(task.get(), createLoobackAddressList(self), reinterpret_cast<GDestroyNotify>(g_resolver_free_addresses));
return;
}
return g_resolver_lookup_by_name_async(self->priv->wrappedResolver.get(), hostname, cancellable, callback, userData);
}
static GList* webkitOverridingResolverLookupByNameFinish(GResolver* resolver, GAsyncResult* result, GError** error)
{
g_return_val_if_fail(g_task_is_valid(result, resolver), nullptr);
return static_cast<GList*>(g_task_propagate_pointer(G_TASK(result), error));
}
static GList* createLoobackAddressList(WebKitOverridingResolver* resolver, GResolverNameLookupFlags flags)
{
GList* list = nullptr;
if (!(flags & G_RESOLVER_NAME_LOOKUP_FLAGS_IPV6_ONLY))
list = g_list_append(list, g_object_ref(resolver->priv->ipv4LoopbackAddress.get()));
if (!(flags & G_RESOLVER_NAME_LOOKUP_FLAGS_IPV4_ONLY))
list = g_list_append(list, g_object_ref(resolver->priv->ipv4LoopbackAddress.get()));
return list;
}
static GList* webkitOverridingResolverLookupByNameWithFlags(GResolver* resolver, const char* hostname, GResolverNameLookupFlags flags, GCancellable* cancellable, GError** error)
{
auto* self = WEBKIT_OVERRIDING_RESOLVER(resolver);
if (self->priv->localhostAliases.contains(String::fromUTF8(hostname)))
return createLoobackAddressList(self, flags);
return g_resolver_lookup_by_name_with_flags(self->priv->wrappedResolver.get(), hostname, flags, cancellable, error);
}
static void webkitOverridingResolverLookupByNameWithFlagsAsync(GResolver* resolver, const gchar* hostname, GResolverNameLookupFlags flags, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer userData)
{
auto* self = WEBKIT_OVERRIDING_RESOLVER(resolver);
if (self->priv->localhostAliases.contains(String::fromUTF8(hostname))) {
GRefPtr<GTask> task = adoptGRef(g_task_new(resolver, cancellable, callback, userData));
g_task_return_pointer(task.get(), createLoobackAddressList(self, flags), reinterpret_cast<GDestroyNotify>(g_resolver_free_addresses));
return;
}
return g_resolver_lookup_by_name_with_flags_async(self->priv->wrappedResolver.get(), hostname, flags, cancellable, callback, userData);
}
static GList* webkitOverridingResolverLookupByNameWithFlagsFinish(GResolver* resolver, GAsyncResult* result, GError** error)
{
g_return_val_if_fail(g_task_is_valid(result, resolver), nullptr);
return static_cast<GList*>(g_task_propagate_pointer(G_TASK(result), error));
}
static char* webkitOverridingResolverLookupByAddress(GResolver* resolver, GInetAddress* address, GCancellable* cancellable, GError** error)
{
return g_resolver_lookup_by_address(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), address, cancellable, error);
}
static void webkitOverridingResolverLookupByAddressAsync(GResolver* resolver, GInetAddress* address, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer userData)
{
g_resolver_lookup_by_address_async(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), address, cancellable, callback, userData);
}
static char* webkitOverridingResolverLookupByAddressFinish(GResolver* resolver, GAsyncResult* result, GError** error)
{
return g_resolver_lookup_by_address_finish(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), result, error);
}
static GList* webkitOverridingResolverLookupRecords(GResolver* resolver, const char* rrname, GResolverRecordType recordType, GCancellable* cancellable, GError** error)
{
return g_resolver_lookup_records(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), rrname, recordType, cancellable, error);
}
static void webkitOverridingResolverLookupRecordsAsync(GResolver* resolver, const char* rrname, GResolverRecordType recordType, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer userData)
{
g_resolver_lookup_records_async(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), rrname, recordType, cancellable, callback, userData);
}
static GList* webkitOverridingResolverLookupRecordsFinish(GResolver* resolver, GAsyncResult* result, GError** error)
{
return g_resolver_lookup_records_finish(WEBKIT_OVERRIDING_RESOLVER(resolver)->priv->wrappedResolver.get(), result, error);
}
static void webkit_overriding_resolver_class_init(WebKitOverridingResolverClass* klass)
{
GResolverClass* resolverClass = G_RESOLVER_CLASS(klass);
resolverClass->lookup_by_name = webkitOverridingResolverLookupByName;
resolverClass->lookup_by_name_async = webkitOverridingResolverLookupByNameAsync;
resolverClass->lookup_by_name_finish = webkitOverridingResolverLookupByNameFinish;
resolverClass->lookup_by_name_with_flags = webkitOverridingResolverLookupByNameWithFlags;
resolverClass->lookup_by_name_with_flags_async = webkitOverridingResolverLookupByNameWithFlagsAsync;
resolverClass->lookup_by_name_with_flags_finish = webkitOverridingResolverLookupByNameWithFlagsFinish;
resolverClass->lookup_by_address = webkitOverridingResolverLookupByAddress;
resolverClass->lookup_by_address_async = webkitOverridingResolverLookupByAddressAsync;
resolverClass->lookup_by_address_finish = webkitOverridingResolverLookupByAddressFinish;
resolverClass->lookup_records = webkitOverridingResolverLookupRecords;
resolverClass->lookup_records_async = webkitOverridingResolverLookupRecordsAsync;
resolverClass->lookup_records_finish = webkitOverridingResolverLookupRecordsFinish;
}
GResolver* webkitOverridingResolverNew(GRefPtr<GResolver>&& wrappedResolver, const HashSet<String>& localhostAliases)
{
g_return_val_if_fail(wrappedResolver, nullptr);
auto* resolver = WEBKIT_OVERRIDING_RESOLVER(g_object_new(WEBKIT_TYPE_OVERRIDING_RESOLVER, nullptr));
resolver->priv->ipv4LoopbackAddress = adoptGRef(g_inet_address_new_loopback(G_SOCKET_FAMILY_IPV4));
resolver->priv->ipv6LoopbackAddress = adoptGRef(g_inet_address_new_loopback(G_SOCKET_FAMILY_IPV6));
resolver->priv->wrappedResolver = WTFMove(wrappedResolver);
resolver->priv->localhostAliases = localhostAliases;
return G_RESOLVER(resolver);
}
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