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/*
* Copyright (C) 2010 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/>.
*/
#include "mongo/db/auth/security_key.h"
#include <sys/stat.h>
#include <string>
#include <vector>
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/client/sasl_client_authenticate.h"
static bool authParamsSet = false;
namespace mongo {
bool isInternalAuthSet() {
return authParamsSet;
}
bool setInternalUserAuthParams(BSONObj authParams) {
if (!isInternalAuthSet()) {
internalSecurity.authParams = authParams.copy();
authParamsSet = true;
return true;
}
else {
log() << "Internal auth params have already been set" << endl;
return false;
}
}
bool authenticateInternalUser(DBClientWithCommands* conn){
if (!isInternalAuthSet()) {
log() << "ERROR: No authentication params set for internal user" << endl;
return false;
}
try {
conn->auth(internalSecurity.authParams);
return true;
} catch(const UserException& ex) {
log() << "can't authenticate to " << conn->toString() << " as internal user, error: "
<< ex.what() << endl;
return false;
}
}
bool setUpSecurityKey(const string& filename) {
struct stat stats;
// check obvious file errors
if (stat(filename.c_str(), &stats) == -1) {
log() << "error getting file " << filename << ": " << strerror(errno) << endl;
return false;
}
#if !defined(_WIN32)
// check permissions: must be X00, where X is >= 4
if ((stats.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
log() << "permissions on " << filename << " are too open" << endl;
return false;
}
#endif
const unsigned long long fileLength = stats.st_size;
if (fileLength < 6 || fileLength > 1024) {
log() << " key file " << filename << " has length " << stats.st_size
<< ", must be between 6 and 1024 chars" << endl;
return false;
}
FILE* file = fopen( filename.c_str(), "rb" );
if (!file) {
log() << "error opening file: " << filename << ": " << strerror(errno) << endl;
return false;
}
string str = "";
// strip key file
unsigned long long read = 0;
while (read < fileLength) {
char buf;
int readLength = fread(&buf, 1, 1, file);
if (readLength < 1) {
log() << "error reading file " << filename << endl;
fclose( file );
return false;
}
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 != '/') {
log() << "invalid char in key file " << filename << ": " << buf << endl;
fclose( file );
return false;
}
str += buf;
}
fclose( file );
if (str.size() < 6) {
log() << "security key must be at least 6 characters" << endl;
return false;
}
LOG(1) << "security key: " << str << endl;
internalSecurity.pwd = DBClientWithCommands::createPasswordDigest(
internalSecurity.user.getUser().toString(), str);
if (cmdLine.clusterAuthMode == "keyfile" || cmdLine.clusterAuthMode == "sendKeyfile") {
setInternalUserAuthParams(BSON(saslCommandMechanismFieldName << "MONGODB-CR" <<
saslCommandUserSourceFieldName <<
internalSecurity.user.getDB() <<
saslCommandUserFieldName << internalSecurity.user.getUser() <<
saslCommandPasswordFieldName << internalSecurity.pwd <<
saslCommandDigestPasswordFieldName << false));
}
return true;
}
} // namespace mongo
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