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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kAccessControl
#include "mongo/platform/basic.h"
#include "mongo/db/auth/security_key.h"
#include <string>
#include <sys/stat.h>
#include "mongo/base/status_with.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
using std::string;
StatusWith<std::string> readSecurityFile(const std::string& filename) {
struct stat stats;
// check obvious file errors
if (stat(filename.c_str(), &stats) == -1) {
return StatusWith<std::string>(ErrorCodes::InvalidPath,
str::stream() << "Error reading file " << filename << ": "
<< strerror(errno));
}
#if !defined(_WIN32)
// check permissions: must be X00, where X is >= 4
if ((stats.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
return StatusWith<std::string>(ErrorCodes::InvalidPath,
str::stream() << "permissions on " << filename
<< " are too open");
}
#endif
FILE* file = fopen(filename.c_str(), "rb");
if (!file) {
return StatusWith<std::string>(ErrorCodes::InvalidPath,
str::stream() << "error opening file: " << filename << ": "
<< strerror(errno));
}
string str = "";
// strip key file
const unsigned long long fileLength = stats.st_size;
unsigned long long read = 0;
while (read < fileLength) {
char buf;
int readLength = fread(&buf, 1, 1, file);
if (readLength < 1) {
fclose(file);
return StatusWith<std::string>(ErrorCodes::UnsupportedFormat,
str::stream() << "error reading file: " << filename);
}
read++;
// check for whitespace
if ((buf >= '\x09' && buf <= '\x0D') || buf == ' ') {
continue;
}
// check valid base64
if ((buf < 'A' || buf > 'Z') && (buf < 'a' || buf > 'z') && (buf < '0' || buf > '9') &&
buf != '+' && buf != '/' && buf != '=') {
fclose(file);
return StatusWith<std::string>(
ErrorCodes::UnsupportedFormat,
str::stream() << "invalid char in key file " << filename << ": " << buf);
}
str += buf;
}
fclose(file);
return StatusWith<std::string>(str);
}
} // namespace mongo
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