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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/flash_clipboard_resource.h"
#include <stddef.h>
#include "base/numerics/safe_conversions.h"
#include "ipc/ipc_message.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/shared_impl/var_tracker.h"
namespace ppapi {
namespace proxy {
namespace {
// Returns whether the given clipboard type is valid.
bool IsValidClipboardType(PP_Flash_Clipboard_Type type) {
return type == PP_FLASH_CLIPBOARD_TYPE_STANDARD ||
type == PP_FLASH_CLIPBOARD_TYPE_SELECTION;
}
// Convert a PP_Var to/from a string which is transmitted to the pepper host.
// These functions assume the format is valid.
bool PPVarToClipboardString(int32_t format,
const PP_Var& var,
std::string* string_out) {
if (format == PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT ||
format == PP_FLASH_CLIPBOARD_FORMAT_HTML) {
StringVar* string_var = StringVar::FromPPVar(var);
if (!string_var)
return false;
*string_out = string_var->value();
return true;
} else {
// All other formats are expected to be array buffers.
ArrayBufferVar* array_buffer_var = ArrayBufferVar::FromPPVar(var);
if (!array_buffer_var)
return false;
*string_out = std::string(static_cast<const char*>(array_buffer_var->Map()),
array_buffer_var->ByteLength());
return true;
}
}
PP_Var ClipboardStringToPPVar(int32_t format,
const std::string& string) {
if (format == PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT ||
format == PP_FLASH_CLIPBOARD_FORMAT_HTML) {
return StringVar::StringToPPVar(string);
} else {
// All other formats are expected to be array buffers.
return PpapiGlobals::Get()->GetVarTracker()->MakeArrayBufferPPVar(
base::checked_cast<uint32_t>(string.size()), string.data());
}
}
} // namespace
FlashClipboardResource::FlashClipboardResource(
Connection connection, PP_Instance instance)
: PluginResource(connection, instance) {
SendCreate(BROWSER, PpapiHostMsg_FlashClipboard_Create());
}
FlashClipboardResource::~FlashClipboardResource() {
}
thunk::PPB_Flash_Clipboard_API*
FlashClipboardResource::AsPPB_Flash_Clipboard_API() {
return this;
}
uint32_t FlashClipboardResource::RegisterCustomFormat(
PP_Instance instance,
const char* format_name) {
// Check to see if the format has already been registered.
uint32_t format = clipboard_formats_.GetFormatID(format_name);
if (format != PP_FLASH_CLIPBOARD_FORMAT_INVALID)
return format;
int32_t result =
SyncCall<PpapiPluginMsg_FlashClipboard_RegisterCustomFormatReply>(
BROWSER,
PpapiHostMsg_FlashClipboard_RegisterCustomFormat(format_name),
&format);
if (result != PP_OK || format == PP_FLASH_CLIPBOARD_FORMAT_INVALID)
return PP_FLASH_CLIPBOARD_FORMAT_INVALID;
clipboard_formats_.SetRegisteredFormat(format_name, format);
return format;
}
PP_Bool FlashClipboardResource::IsFormatAvailable(
PP_Instance instance,
PP_Flash_Clipboard_Type clipboard_type,
uint32_t format) {
if (IsValidClipboardType(clipboard_type) &&
(FlashClipboardFormatRegistry::IsValidPredefinedFormat(format) ||
clipboard_formats_.IsFormatRegistered(format))) {
int32_t result = SyncCall<IPC::Message>(BROWSER,
PpapiHostMsg_FlashClipboard_IsFormatAvailable(clipboard_type, format));
return result == PP_OK ? PP_TRUE : PP_FALSE;
}
return PP_FALSE;
}
PP_Var FlashClipboardResource::ReadData(
PP_Instance instance,
PP_Flash_Clipboard_Type clipboard_type,
uint32_t format) {
std::string value;
int32_t result =
SyncCall<PpapiPluginMsg_FlashClipboard_ReadDataReply>(
BROWSER,
PpapiHostMsg_FlashClipboard_ReadData(clipboard_type, format),
&value);
if (result != PP_OK)
return PP_MakeUndefined();
return ClipboardStringToPPVar(format, value);
}
int32_t FlashClipboardResource::WriteData(
PP_Instance instance,
PP_Flash_Clipboard_Type clipboard_type,
uint32_t data_item_count,
const uint32_t formats[],
const PP_Var data_items[]) {
if (!IsValidClipboardType(clipboard_type))
return PP_ERROR_BADARGUMENT;
std::vector<uint32_t> formats_vector;
std::vector<std::string> data_items_vector;
for (size_t i = 0; i < data_item_count; ++i) {
if (!clipboard_formats_.IsFormatRegistered(formats[i]) &&
!FlashClipboardFormatRegistry::IsValidPredefinedFormat(formats[i])) {
return PP_ERROR_BADARGUMENT;
}
formats_vector.push_back(formats[i]);
std::string string;
if (!PPVarToClipboardString(formats[i], data_items[i], &string))
return PP_ERROR_BADARGUMENT;
data_items_vector.push_back(string);
}
Post(BROWSER,
PpapiHostMsg_FlashClipboard_WriteData(
static_cast<uint32_t>(clipboard_type),
formats_vector,
data_items_vector));
// Assume success, since it allows us to avoid a sync IPC.
return PP_OK;
}
PP_Bool FlashClipboardResource::GetSequenceNumber(
PP_Instance instance,
PP_Flash_Clipboard_Type clipboard_type,
uint64_t* sequence_number) {
int32_t result =
SyncCall<PpapiPluginMsg_FlashClipboard_GetSequenceNumberReply>(
BROWSER,
PpapiHostMsg_FlashClipboard_GetSequenceNumber(clipboard_type),
sequence_number);
return PP_FromBool(result == PP_OK);
}
} // namespace proxy
} // namespace ppapi
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