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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 "chrome/browser/chromeos/system_logs/lsb_release_log_source.h"
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/string_split.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace {
const char kInvalidLogEntry[] = "<invalid characters in log entry>";
const char kEmptyLogEntry[] = "<no value>";
typedef std::pair<std::string, std::string> KeyValuePair;
} // namespace
namespace chromeos {
void LsbReleaseLogSource::Fetch(const SysLogsSourceCallback& callback) {
DCHECK(!callback.is_null());
SystemLogsResponse* response = new SystemLogsResponse;
BrowserThread::PostBlockingPoolTaskAndReply(
FROM_HERE,
base::Bind(&LsbReleaseLogSource::ReadLSBRelease, response),
base::Bind(callback,
base::Owned(response)));
}
void LsbReleaseLogSource::ReadLSBRelease(SystemLogsResponse* response) {
DCHECK(response);
const FilePath lsb_release_file("/etc/lsb-release");
std::string lsb_data;
bool read_success = file_util::ReadFileToString(lsb_release_file, &lsb_data);
// if we were using an internal temp file, the user does not need the
// logs to stay past the ReadFile call - delete the file
if (!read_success) {
LOG(ERROR) << "Can't access /etc/lsb-release file.";
return;
}
ParseLSBRelease(lsb_data, response);
}
void LsbReleaseLogSource::ParseLSBRelease(const std::string& lsb_data,
SystemLogsResponse* response) {
std::vector<KeyValuePair> pairs;
base::SplitStringIntoKeyValuePairs(lsb_data, '=', '\n', &pairs);
for (size_t i = 0; i < pairs.size(); ++i) {
std::string key, value;
TrimWhitespaceASCII(pairs[i].first, TRIM_ALL, &key);
TrimWhitespaceASCII(pairs[i].second, TRIM_ALL, &value);
if (key.empty())
continue;
if (!IsStringUTF8(value) || !IsStringUTF8(key)) {
LOG(WARNING) << "Invalid characters in system log entry: " << key;
(*response)[key] = kInvalidLogEntry;
continue;
}
if (value.empty())
(*response)[key] = kEmptyLogEntry;
else
(*response)[key] = value;
}
}
} // namespace chromeos
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