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// Copyright 2015 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 "mojo/fetcher/local_fetcher.h"
#include "base/bind.h"
#include "base/files/file_util.h"
#include "base/format_macros.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/trace_event.h"
#include "mojo/common/common_type_converters.h"
#include "mojo/common/data_pipe_utils.h"
#include "mojo/common/url_type_converters.h"
#include "mojo/services/network/public/interfaces/network_service.mojom.h"
#include "mojo/util/filename_util.h"
#include "url/url_util.h"
namespace mojo {
namespace fetcher {
namespace {
void IgnoreResult(bool result) {
}
} // namespace
// A loader for local files.
LocalFetcher::LocalFetcher(NetworkService* network_service,
const GURL& url,
const GURL& url_without_query,
const FetchCallback& loader_callback)
: Fetcher(loader_callback),
url_(url),
path_(util::UrlToFilePath(url_without_query)) {
TRACE_EVENT1("mojo_shell", "LocalFetcher::LocalFetcher", "url", url.spec());
const std::string ext(base::FilePath(path_.Extension()).AsUTF8Unsafe());
if (network_service && !base::EqualsCaseInsensitiveASCII(ext, ".mojo")) {
network_service->GetMimeTypeFromFile(
path_.AsUTF8Unsafe(),
base::Bind(&LocalFetcher::GetMimeTypeFromFileCallback,
base::Unretained(this)));
} else {
loader_callback_.Run(make_scoped_ptr(this));
}
}
void LocalFetcher::GetMimeTypeFromFileCallback(const mojo::String& mime_type) {
mime_type_ = mime_type.To<std::string>();
loader_callback_.Run(make_scoped_ptr(this));
}
const GURL& LocalFetcher::GetURL() const {
return url_;
}
GURL LocalFetcher::GetRedirectURL() const {
return GURL::EmptyGURL();
}
GURL LocalFetcher::GetRedirectReferer() const {
return GURL::EmptyGURL();
}
URLResponsePtr LocalFetcher::AsURLResponse(base::TaskRunner* task_runner,
uint32_t skip) {
URLResponsePtr response(URLResponse::New());
response->url = String::From(url_);
DataPipe data_pipe;
response->body = data_pipe.consumer_handle.Pass();
int64 file_size;
if (base::GetFileSize(path_, &file_size)) {
response->headers = Array<HttpHeaderPtr>(1);
HttpHeaderPtr header = HttpHeader::New();
header->name = "Content-Length";
header->value = base::StringPrintf("%" PRId64, file_size);
response->headers[0] = header.Pass();
}
response->mime_type = String::From(MimeType());
common::CopyFromFile(path_, data_pipe.producer_handle.Pass(), skip,
task_runner, base::Bind(&IgnoreResult));
return response.Pass();
}
void LocalFetcher::AsPath(
base::TaskRunner* task_runner,
base::Callback<void(const base::FilePath&, bool)> callback) {
// Async for consistency with network case.
base::MessageLoop::current()->PostTask(
FROM_HERE, base::Bind(callback, path_, base::PathExists(path_)));
}
std::string LocalFetcher::MimeType() {
return mime_type_;
}
bool LocalFetcher::HasMojoMagic() {
std::string magic;
ReadFileToString(path_, &magic, strlen(kMojoMagic));
return magic == kMojoMagic;
}
bool LocalFetcher::PeekFirstLine(std::string* line) {
std::string start_of_file;
ReadFileToString(path_, &start_of_file, kMaxShebangLength);
size_t return_position = start_of_file.find('\n');
if (return_position == std::string::npos)
return false;
*line = start_of_file.substr(0, return_position + 1);
return true;
}
} // namespace fetcher
} // namespace mojo
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