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/*
* Copyright (C) 2022 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "WebKitPermissionStateQuery.h"
#include "APISecurityOrigin.h"
#include "WebKitPermissionStateQueryPrivate.h"
#include "WebKitSecurityOriginPrivate.h"
#include <wtf/glib/WTFGType.h>
/**
* WebKitPermissionStateQuery:
* @See_also: #WebKitWebView
*
* This query represents a user's choice to allow or deny access to "powerful features" of the
* platform, as specified in the [Permissions W3C
* Specification](https://w3c.github.io/permissions/).
*
* When signalled by the #WebKitWebView through the `query-permission-state` signal, the application
* has to eventually respond, via `webkit_permission_state_query_finish()`, whether it grants,
* denies or requests a dedicated permission prompt for the given query.
*
* When a #WebKitPermissionStateQuery is not handled by the user, the user-agent is instructed to
* `prompt` the user for the given permission.
*/
struct _WebKitPermissionStateQuery {
explicit _WebKitPermissionStateQuery(const WTF::String& permissionName, API::SecurityOrigin& origin, CompletionHandler<void(std::optional<WebCore::PermissionState>)>&& completionHandler)
: permissionName(permissionName.utf8())
, securityOrigin(webkitSecurityOriginCreate(origin.securityOrigin().isolatedCopy()))
, completionHandler(WTFMove(completionHandler))
{
}
~_WebKitPermissionStateQuery()
{
// Fallback to Prompt response unless the completion handler was already called.
if (completionHandler)
completionHandler(WebCore::PermissionState::Prompt);
webkit_security_origin_unref(securityOrigin);
}
CString permissionName;
WebKitSecurityOrigin* securityOrigin;
CompletionHandler<void(std::optional<WebCore::PermissionState>)> completionHandler;
int referenceCount { 1 };
};
G_DEFINE_BOXED_TYPE(WebKitPermissionStateQuery, webkit_permission_state_query, webkit_permission_state_query_ref, webkit_permission_state_query_unref)
WebKitPermissionStateQuery* webkitPermissionStateQueryCreate(const WTF::String& permissionName, API::SecurityOrigin& origin, CompletionHandler<void(std::optional<WebCore::PermissionState>)>&& completionHandler)
{
WebKitPermissionStateQuery* query = static_cast<WebKitPermissionStateQuery*>(fastMalloc(sizeof(WebKitPermissionStateQuery)));
new (query) WebKitPermissionStateQuery(permissionName, origin, WTFMove(completionHandler));
return query;
}
/**
* webkit_permission_state_query_ref:
* @query: a #WebKitPermissionStateQuery
*
* Atomically increments the reference count of @query by one.
*
* This function is MT-safe and may be called from any thread.
*
* Returns: The passed #WebKitPermissionStateQuery
*
* Since: 2.40
*/
WebKitPermissionStateQuery* webkit_permission_state_query_ref(WebKitPermissionStateQuery* query)
{
g_return_val_if_fail(query, nullptr);
g_atomic_int_inc(&query->referenceCount);
return query;
}
/**
* webkit_permission_state_query_unref:
* @query: a #WebKitPermissionStateQuery
*
* Atomically decrements the reference count of @query by one.
*
* If the reference count drops to 0, all memory allocated by #WebKitPermissionStateQuery is
* released. This function is MT-safe and may be called from any thread.
*
* Since: 2.40
*/
void webkit_permission_state_query_unref(WebKitPermissionStateQuery* query)
{
g_return_if_fail(query);
if (g_atomic_int_dec_and_test(&query->referenceCount)) {
query->~WebKitPermissionStateQuery();
fastFree(query);
}
}
/**
* webkit_permission_state_query_get_name:
* @query: a #WebKitPermissionStateQuery
*
* Get the permission name for which access is being queried.
*
* Returns: the permission name for @query
*
* Since: 2.40
*/
const gchar*
webkit_permission_state_query_get_name(WebKitPermissionStateQuery* query)
{
g_return_val_if_fail(query, nullptr);
return query->permissionName.data();
}
/**
* webkit_permission_state_query_get_security_origin:
* @query: a #WebKitPermissionStateQuery
*
* Get the permission origin for which access is being queried.
*
* Returns: (transfer none): A #WebKitSecurityOrigin representing the origin from which the
* @query was emitted.
*
* Since: 2.40
*/
WebKitSecurityOrigin *
webkit_permission_state_query_get_security_origin(WebKitPermissionStateQuery* query)
{
g_return_val_if_fail(query, nullptr);
return query->securityOrigin;
}
/**
* webkit_permission_state_query_finish:
* @query: a #WebKitPermissionStateQuery
* @state: a #WebKitPermissionState
*
* Notify the web-engine of the selected permission state for the given query. This function should
* only be called as a response to the `WebKitWebView::query-permission-state` signal.
*
* Since: 2.40
*/
void
webkit_permission_state_query_finish(WebKitPermissionStateQuery* query, WebKitPermissionState state)
{
g_return_if_fail(query);
g_return_if_fail(query->completionHandler);
switch (state) {
case WEBKIT_PERMISSION_STATE_GRANTED:
query->completionHandler(WebCore::PermissionState::Granted);
break;
case WEBKIT_PERMISSION_STATE_DENIED:
query->completionHandler(WebCore::PermissionState::Denied);
break;
case WEBKIT_PERMISSION_STATE_PROMPT:
query->completionHandler(WebCore::PermissionState::Prompt);
break;
}
}
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