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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 "plugin/cross/archive_request_static_glue.h"
#include "base/basictypes.h"
#include "plugin/cross/stream_manager.h"
#include "plugin/cross/o3d_glue.h"
#include "import/cross/archive_request.h"
namespace glue {
namespace namespace_o3d {
namespace class_ArchiveRequest {
using _o3d::PluginObject;
using o3d::Pack;
using o3d::ArchiveRequest;
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Callbacks
//
// TODO : get rid of these horrible callback objects which end up just
// dispatching to the ArchiveRequest object.
// Need to change the StreamManager class to implement an interface:
// WriteReadyCallback
// WriteCallback
// FinishedCallback
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveNewStreamCallback : public StreamManager::NewStreamCallback {
public:
explicit ArchiveNewStreamCallback(ArchiveRequest *request)
: request_(request) { }
virtual void Run(DownloadStream *stream) {
request_->NewStreamCallback(stream);
}
private:
ArchiveRequest::Ref request_;
DISALLOW_COPY_AND_ASSIGN(ArchiveNewStreamCallback);
};
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveWriteReadyCallback : public StreamManager::WriteReadyCallback {
public:
explicit ArchiveWriteReadyCallback(ArchiveRequest *request)
: request_(request) { }
virtual int32 Run(DownloadStream *stream) {
return request_->WriteReadyCallback(stream);
}
private:
ArchiveRequest::Ref request_;
DISALLOW_COPY_AND_ASSIGN(ArchiveWriteReadyCallback);
};
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveWriteCallback : public StreamManager::WriteCallback {
public:
explicit ArchiveWriteCallback(ArchiveRequest *request) : request_(request) {
}
virtual int32 Run(DownloadStream *stream,
int32 offset,
int32 length,
void *data) {
return request_->WriteCallback(stream, offset, length, data);
}
private:
ArchiveRequest::Ref request_;
DISALLOW_COPY_AND_ASSIGN(ArchiveWriteCallback);
};
class ArchiveFinishedCallback : public StreamManager::FinishedCallback {
public:
explicit ArchiveFinishedCallback(ArchiveRequest *request)
: request_(request) {
}
virtual ~ArchiveFinishedCallback() {
// If the file request was interrupted (for example we moved to a new page
// before the file transfer was completed) then we tell the FileRequest
// object that the request failed. It's important to call this here since
// set_success() will release the pack reference that the FileRequest holds
// which will allow the pack to be garbage collected.
if (!request_->done()) {
request_->set_success(false);
}
}
// Loads the Archive file, calls the JS callback to notify success.
virtual void Run(DownloadStream *stream,
bool success,
const std::string &filename,
const std::string &mime_type) {
request_->FinishedCallback(stream, success, filename, mime_type);
}
private:
ArchiveRequest::Ref request_;
DISALLOW_COPY_AND_ASSIGN(ArchiveFinishedCallback);
};
// Sets up the parameters required for all ArchiveRequests.
void userglue_method_open(void *plugin_data,
ArchiveRequest *request,
const String &method,
const String &uri) {
if (request->done()) {
request->set_success(false);
request->set_ready_state(ArchiveRequest::STATE_INIT); // not ready
return; // We don't yet support reusing ArchiveRequests.
}
String method_lower(method);
std::transform(method.begin(), method.end(), method_lower.begin(), ::tolower);
if (method_lower != "get") {
request->set_success(false);
return; // We don't yet support fetching files via POST.
}
request->set_uri(uri);
request->set_ready_state(ArchiveRequest::STATE_OPEN);
}
// Starts progressively downloading the requested file
// The ArchiveRequest object will get callbacks as bytes stream in
void userglue_method_send(void *plugin_data,
ArchiveRequest *request) {
PluginObject *plugin_object = static_cast<PluginObject *>(plugin_data);
StreamManager *stream_manager = plugin_object->stream_manager();
bool result = false;
if (request->done()) {
request->set_success(false);
return; // ArchiveRequests can't be reused.
}
if (request->ready_state() != 1) { // Forgot to call open, or other error.
request->set_success(false);
return;
}
CHECK(request->pack());
ArchiveNewStreamCallback *new_stream_callback =
new ArchiveNewStreamCallback(request);
ArchiveWriteReadyCallback *writeready_callback =
new ArchiveWriteReadyCallback(request);
ArchiveWriteCallback *write_callback =
new ArchiveWriteCallback(request);
ArchiveFinishedCallback *finished_callback =
new ArchiveFinishedCallback(request);
if (finished_callback) {
DownloadStream *stream = stream_manager->LoadURL(request->uri(),
new_stream_callback,
writeready_callback,
write_callback,
finished_callback,
NP_NORMAL);
if (!stream) {
// We don't call O3D_ERROR here because the URI may be user set
// so we don't want to cause an error callback when the developer
// may not be able to know the URI is correct.
request->set_error("could not create download stream");
// We need to call the callback to report failure. Because it's async, the
// code making the request can't know that once it has called send() that
// the request still exists since send() may have called the callback and
// the callback may have deleted the request.
request->FinishedCallback(NULL, false, request->uri(), std::string(""));
}
// If stream is not NULL request may not exist as LoadURL may already have
// completed and therefore called the callback which may have freed the
// request so we can't set anything on the request here.
}
}
} // namespace class_ArchiveRequest
} // namespace namespace_o3d
} // namespace glue
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