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// Copyright 2014 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 "components/update_client/ping_manager.h"
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/compiler_specific.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/sequenced_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_checker.h"
#include "components/update_client/configurator.h"
#include "components/update_client/crx_update_item.h"
#include "components/update_client/request_sender.h"
#include "components/update_client/utils.h"
#include "net/url_request/url_fetcher.h"
#include "url/gurl.h"
namespace update_client {
namespace {
// Returns a string literal corresponding to the value of the downloader |d|.
const char* DownloaderToString(CrxDownloader::DownloadMetrics::Downloader d) {
switch (d) {
case CrxDownloader::DownloadMetrics::kUrlFetcher:
return "direct";
case CrxDownloader::DownloadMetrics::kBits:
return "bits";
default:
return "unknown";
}
}
// Returns a string representing a sequence of download complete events
// corresponding to each download metrics in |item|.
std::string BuildDownloadCompleteEventElements(const CrxUpdateItem* item) {
using base::StringAppendF;
std::string download_events;
for (size_t i = 0; i != item->download_metrics.size(); ++i) {
const CrxDownloader::DownloadMetrics& metrics = item->download_metrics[i];
std::string event("<event eventtype=\"14\"");
StringAppendF(&event, " eventresult=\"%d\"", metrics.error == 0);
StringAppendF(&event, " downloader=\"%s\"",
DownloaderToString(metrics.downloader));
if (metrics.error) {
StringAppendF(&event, " errorcode=\"%d\"", metrics.error);
}
StringAppendF(&event, " url=\"%s\"", metrics.url.spec().c_str());
// -1 means that the byte counts are not known.
if (metrics.downloaded_bytes != -1) {
StringAppendF(&event, " downloaded=\"%s\"",
base::Int64ToString(metrics.downloaded_bytes).c_str());
}
if (metrics.total_bytes != -1) {
StringAppendF(&event, " total=\"%s\"",
base::Int64ToString(metrics.total_bytes).c_str());
}
if (metrics.download_time_ms) {
StringAppendF(&event, " download_time_ms=\"%s\"",
base::Uint64ToString(metrics.download_time_ms).c_str());
}
StringAppendF(&event, "/>");
download_events += event;
}
return download_events;
}
// Returns a string representing one ping event xml element for an update item.
std::string BuildUpdateCompleteEventElement(const CrxUpdateItem* item) {
DCHECK(item->status == CrxUpdateItem::kNoUpdate ||
item->status == CrxUpdateItem::kUpdated);
using base::StringAppendF;
std::string ping_event("<event eventtype=\"3\"");
const int event_result = item->status == CrxUpdateItem::kUpdated;
StringAppendF(&ping_event, " eventresult=\"%d\"", event_result);
if (item->error_category)
StringAppendF(&ping_event, " errorcat=\"%d\"", item->error_category);
if (item->error_code)
StringAppendF(&ping_event, " errorcode=\"%d\"", item->error_code);
if (item->extra_code1)
StringAppendF(&ping_event, " extracode1=\"%d\"", item->extra_code1);
if (HasDiffUpdate(item))
StringAppendF(&ping_event, " diffresult=\"%d\"", !item->diff_update_failed);
if (item->diff_error_category) {
StringAppendF(&ping_event, " differrorcat=\"%d\"",
item->diff_error_category);
}
if (item->diff_error_code)
StringAppendF(&ping_event, " differrorcode=\"%d\"", item->diff_error_code);
if (item->diff_extra_code1) {
StringAppendF(&ping_event, " diffextracode1=\"%d\"",
item->diff_extra_code1);
}
if (!item->previous_fp.empty())
StringAppendF(&ping_event, " previousfp=\"%s\"", item->previous_fp.c_str());
if (!item->next_fp.empty())
StringAppendF(&ping_event, " nextfp=\"%s\"", item->next_fp.c_str());
StringAppendF(&ping_event, "/>");
return ping_event;
}
// Builds a ping message for the specified update item.
std::string BuildPing(const Configurator& config, const CrxUpdateItem* item) {
const char app_element_format[] =
"<app appid=\"%s\" version=\"%s\" nextversion=\"%s\">"
"%s"
"%s"
"</app>";
const std::string app_element(base::StringPrintf(
app_element_format,
item->id.c_str(), // "appid"
item->previous_version.GetString().c_str(), // "version"
item->next_version.GetString().c_str(), // "nextversion"
BuildUpdateCompleteEventElement(item).c_str(), // update event
BuildDownloadCompleteEventElements(item).c_str())); // download events
return BuildProtocolRequest(config.GetBrowserVersion().GetString(),
config.GetChannel(), config.GetLang(),
config.GetOSLongName(), app_element, "");
}
// Sends a fire and forget ping. The instances of this class have no
// ownership and they self-delete upon completion. One instance of this class
// can send only one ping.
class PingSender {
public:
explicit PingSender(const Configurator& config);
~PingSender();
bool SendPing(const CrxUpdateItem* item);
private:
void OnRequestSenderComplete(const net::URLFetcher* source);
const Configurator& config_;
scoped_ptr<RequestSender> request_sender_;
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(PingSender);
};
PingSender::PingSender(const Configurator& config) : config_(config) {
}
PingSender::~PingSender() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void PingSender::OnRequestSenderComplete(const net::URLFetcher* source) {
DCHECK(thread_checker_.CalledOnValidThread());
delete this;
}
bool PingSender::SendPing(const CrxUpdateItem* item) {
DCHECK(item);
DCHECK(thread_checker_.CalledOnValidThread());
std::vector<GURL> urls(config_.PingUrl());
if (urls.empty())
return false;
request_sender_.reset(new RequestSender(config_));
request_sender_->Send(
BuildPing(config_, item), urls,
base::Bind(&PingSender::OnRequestSenderComplete, base::Unretained(this)));
return true;
}
} // namespace
PingManager::PingManager(const Configurator& config) : config_(config) {
}
PingManager::~PingManager() {
}
// Sends a fire and forget ping when the updates are complete. The ping
// sender object self-deletes after sending the ping has completed asynchrously.
void PingManager::OnUpdateComplete(const CrxUpdateItem* item) {
PingSender* ping_sender(new PingSender(config_));
if (!ping_sender->SendPing(item))
delete ping_sender;
}
} // namespace update_client
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