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// Copyright (c) 2009 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 "net/url_request/url_request_new_ftp_job.h"
#include "base/file_version_info.h"
#include "base/message_loop.h"
#include "net/base/escape.h"
#include "net/base/net_util.h"
#include "net/ftp/ftp_directory_parser.h"
#include "net/ftp/ftp_response_info.h"
#include "net/ftp/ftp_transaction_factory.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_error_job.h"
URLRequestNewFtpJob::URLRequestNewFtpJob(URLRequest* request)
: URLRequestJob(request),
server_auth_state_(net::AUTH_STATE_DONT_NEED_AUTH),
ALLOW_THIS_IN_INITIALIZER_LIST(
start_callback_(this, &URLRequestNewFtpJob::OnStartCompleted)),
ALLOW_THIS_IN_INITIALIZER_LIST(
read_callback_(this, &URLRequestNewFtpJob::OnReadCompleted)),
read_in_progress_(false),
context_(request->context()) {
}
URLRequestNewFtpJob::~URLRequestNewFtpJob() {
}
// static
URLRequestJob* URLRequestNewFtpJob::Factory(URLRequest* request,
const std::string& scheme) {
DCHECK(scheme == "ftp");
if (request->url().has_port() &&
!net::IsPortAllowedByFtp(request->url().IntPort()))
return new URLRequestErrorJob(request, net::ERR_UNSAFE_PORT);
DCHECK(request->context());
DCHECK(request->context()->ftp_transaction_factory());
return new URLRequestNewFtpJob(request);
}
void URLRequestNewFtpJob::Start() {
DCHECK(!transaction_.get());
request_info_.url = request_->url();
StartTransaction();
}
void URLRequestNewFtpJob::Kill() {
if (!transaction_.get())
return;
DestroyTransaction();
URLRequestJob::Kill();
}
bool URLRequestNewFtpJob::ReadRawData(net::IOBuffer* buf,
int buf_size,
int *bytes_read) {
DCHECK_NE(buf_size, 0);
DCHECK(bytes_read);
DCHECK(!read_in_progress_);
if (response_info_ == NULL) {
response_info_ = transaction_->GetResponseInfo();
if (response_info_->is_directory_listing) {
// Unescape the URL path and pass the raw 8bit directly to the browser.
directory_html_ = net::GetDirectoryListingHeader(
UnescapeURLComponent(request_->url().path(),
UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS));
// If this isn't top level directory (i.e. the path isn't "/",)
// add a link to the parent directory.
if (request_->url().path().length() > 1)
directory_html_.append(net::GetDirectoryListingEntry("..",
false,
0,
base::Time()));
}
}
if (!directory_html_.empty()) {
size_t bytes_to_copy = std::min(static_cast<size_t>(buf_size),
directory_html_.size());
memcpy(buf->data(), directory_html_.c_str(), bytes_to_copy);
*bytes_read = bytes_to_copy;
directory_html_.erase(0, bytes_to_copy);
return true;
}
int rv = transaction_->Read(buf, buf_size, &read_callback_);
if (response_info_->is_directory_listing) {
std::string file_entry;
if (rv > 0) {
std::string line;
buf->data()[rv] = 0;
std::istringstream iss(buf->data());
while (getline(iss, line)) {
struct net::ListState state;
struct net::ListResult result;
// TODO(ibrar): Use a more descriptive variable name than 'lt', which
// looks like 'it'.
net::LineType lt = ParseFTPLine(line.c_str(), &state, &result);
switch (lt) {
case net::FTP_TYPE_DIRECTORY:
file_entry.append(net::GetDirectoryListingEntry(result.fe_fname,
true,
rv,
base::Time()));
break;
case net::FTP_TYPE_FILE:
file_entry.append(net::GetDirectoryListingEntry(result.fe_fname,
false,
rv,
base::Time()));
break;
case net::FTP_TYPE_SYMLINK:
case net::FTP_TYPE_JUNK:
case net::FTP_TYPE_COMMENT:
break;
default:
break;
}
}
memcpy(buf->data(), file_entry.c_str(), file_entry.length());
*bytes_read = file_entry.length();
return true;
}
} else {
rv = transaction_->Read(buf, buf_size, &read_callback_);
}
if (rv >= 0) {
*bytes_read = rv;
return true;
}
if (rv == net::ERR_IO_PENDING) {
read_in_progress_ = true;
SetStatus(URLRequestStatus(URLRequestStatus::IO_PENDING, 0));
} else {
NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, rv));
}
return false;
}
void URLRequestNewFtpJob::OnStartCompleted(int result) {
// If the request was destroyed, then there is no more work to do.
if (!request_ || !request_->delegate())
return;
// If the transaction was destroyed, then the job was cancelled, and
// we can just ignore this notification.
if (!transaction_.get())
return;
// Clear the IO_PENDING status
SetStatus(URLRequestStatus());
if (result == net::OK) {
URLRequestJob::NotifyHeadersComplete();
} else {
NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, result));
}
}
void URLRequestNewFtpJob::OnReadCompleted(int result) {
read_in_progress_ = false;
if (result == 0) {
NotifyDone(URLRequestStatus());
} else if (result < 0) {
NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result));
} else {
// Clear the IO_PENDING status
SetStatus(URLRequestStatus());
}
NotifyReadComplete(result);
}
void URLRequestNewFtpJob::StartTransaction() {
// Create a transaction.
DCHECK(!transaction_.get());
DCHECK(request_->context());
DCHECK(request_->context()->ftp_transaction_factory());
transaction_.reset(
request_->context()->ftp_transaction_factory()->CreateTransaction());
// No matter what, we want to report our status as IO pending since we will
// be notifying our consumer asynchronously via OnStartCompleted.
SetStatus(URLRequestStatus(URLRequestStatus::IO_PENDING, 0));
int rv;
if (transaction_.get()) {
rv = transaction_->Start(&request_info_, &start_callback_);
if (rv == net::ERR_IO_PENDING)
return;
} else {
rv = net::ERR_FAILED;
}
// The transaction started synchronously, but we need to notify the
// URLRequest delegate via the message loop.
MessageLoop::current()->PostTask(FROM_HERE, NewRunnableMethod(
this, &URLRequestNewFtpJob::OnStartCompleted, rv));
}
void URLRequestNewFtpJob::DestroyTransaction() {
DCHECK(transaction_.get());
transaction_.reset();
response_info_ = NULL;
}
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