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// cmdline.cpp
/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#include "mongo/util/cmdline_utils/censor_cmdline.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
namespace cmdline_utils {
static bool _isPasswordArgument(char const* argumentName);
static bool _isPasswordSwitch(char const* switchName);
static bool _isPasswordArgument(const char* argumentName) {
static const char* const passwordArguments[] = {
"net.tls.PEMKeyPassword",
"net.ssl.PEMKeyPassword",
"net.tls.clusterPassword",
"net.ssl.clusterPassword",
"processManagement.windowsService.servicePassword",
"security.kmip.clientCertificatePassword",
"security.ldap.bind.queryPassword",
NULL // Last entry sentinel.
};
for (const char* const* current = passwordArguments; *current; ++current) {
if (mongoutils::str::equals(argumentName, *current))
return true;
}
return false;
}
static bool _isPasswordSwitch(const char* switchName) {
static const char* const passwordSwitches[] = {
"tlsPEMKeyPassword",
"sslPEMKeyPassword",
"tlsClusterPassword",
"sslClusterPassword",
"servicePassword",
"kmipClientCertificatePassword",
"ldapQueryPassword",
NULL // Last entry sentinel.
};
if (switchName[0] != '-')
return false;
size_t i = 1;
if (switchName[1] == '-')
i = 2;
switchName += i;
for (const char* const* current = passwordSwitches; *current; ++current) {
if (mongoutils::str::equals(switchName, *current))
return true;
}
return false;
}
static void _redact(char* arg) {
for (; *arg; ++arg)
*arg = 'x';
}
void censorBSONObjRecursive(const BSONObj& params, // Object we are censoring
const std::string& parentPath, // Set if this is a sub object
bool isArray,
BSONObjBuilder* result) {
BSONObjIterator paramsIterator(params);
while (paramsIterator.more()) {
BSONElement param = paramsIterator.next();
std::string dottedName =
(parentPath.empty() ? param.fieldName()
: isArray ? parentPath : parentPath + '.' + param.fieldName());
if (param.type() == Array) {
BSONObjBuilder subArray(result->subarrayStart(param.fieldName()));
censorBSONObjRecursive(param.Obj(), dottedName, true, &subArray);
subArray.done();
} else if (param.type() == Object) {
BSONObjBuilder subObj(result->subobjStart(param.fieldName()));
censorBSONObjRecursive(param.Obj(), dottedName, false, &subObj);
subObj.done();
} else if (param.type() == String) {
if (_isPasswordArgument(dottedName.c_str())) {
result->append(param.fieldName(), "<password>");
} else {
result->append(param);
}
} else {
result->append(param);
}
}
}
void censorBSONObj(BSONObj* params) {
BSONObjBuilder builder;
censorBSONObjRecursive(*params, "", false, &builder);
*params = builder.obj();
}
void censorArgsVector(std::vector<std::string>* args) {
for (size_t i = 0; i < args->size(); ++i) {
std::string& arg = args->at(i);
const std::string::iterator endSwitch = std::find(arg.begin(), arg.end(), '=');
std::string switchName(arg.begin(), endSwitch);
if (_isPasswordSwitch(switchName.c_str())) {
if (endSwitch == arg.end()) {
if (i + 1 < args->size()) {
args->at(i + 1) = "<password>";
}
} else {
arg = switchName + "=<password>";
}
}
}
}
void censorArgvArray(int argc, char** argv) {
// Algorithm: For each arg in argv:
// Look for an equal sign in arg; if there is one, temporarily nul it out.
// check to see if arg is a password switch. If so, overwrite the value
// component with xs.
// restore the nul'd out equal sign, if any.
for (int i = 0; i < argc; ++i) {
char* const arg = argv[i];
char* const firstEqSign = strchr(arg, '=');
if (NULL != firstEqSign) {
*firstEqSign = '\0';
}
if (_isPasswordSwitch(arg)) {
if (NULL == firstEqSign) {
if (i + 1 < argc) {
_redact(argv[i + 1]);
}
} else {
_redact(firstEqSign + 1);
}
}
if (NULL != firstEqSign) {
*firstEqSign = '=';
}
}
}
} // namespace cmdline_utils
}
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