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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2009 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_AUTHTYPES_H
#define CEPH_AUTHTYPES_H
#include "Crypto.h"
#include "msg/msg_types.h"
#include "common/config.h"
#include "common/entity_name.h"
class Cond;
struct EntityAuth {
uint64_t auid;
CryptoKey key;
map<string, bufferlist> caps;
EntityAuth() : auid(CEPH_AUTH_UID_DEFAULT) {}
void encode(bufferlist& bl) const {
__u8 struct_v = 2;
::encode(struct_v, bl);
::encode(auid, bl);
::encode(key, bl);
::encode(caps, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 struct_v;
::decode(struct_v, bl);
if (struct_v >= 2)
::decode(auid, bl);
else auid = CEPH_AUTH_UID_DEFAULT;
::decode(key, bl);
::decode(caps, bl);
}
};
WRITE_CLASS_ENCODER(EntityAuth)
static inline ostream& operator<<(ostream& out, const EntityAuth& a) {
return out << "auth(auid = " << a.auid << " key=" << a.key << " with " << a.caps.size() << " caps)";
}
struct AuthCapsInfo {
bool allow_all;
bufferlist caps;
AuthCapsInfo() : allow_all(false) {}
void encode(bufferlist& bl) const {
__u8 struct_v = 1;
::encode(struct_v, bl);
__u8 a = (__u8)allow_all;
::encode(a, bl);
::encode(caps, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 struct_v;
::decode(struct_v, bl);
__u8 a;
::decode(a, bl);
allow_all = (bool)a;
::decode(caps, bl);
}
};
WRITE_CLASS_ENCODER(AuthCapsInfo)
/*
* The ticket (if properly validated) authorizes the principal use
* services as described by 'caps' during the specified validity
* period.
*/
struct AuthTicket {
EntityName name;
uint64_t global_id; /* global instance id */
uint64_t auid;
utime_t created, renew_after, expires;
AuthCapsInfo caps;
__u32 flags;
AuthTicket() : global_id(0), auid(CEPH_AUTH_UID_DEFAULT), flags(0){}
void init_timestamps(utime_t now, double ttl) {
created = now;
expires = now;
expires += ttl;
renew_after = now;
renew_after += ttl / 2.0;
}
void encode(bufferlist& bl) const {
__u8 struct_v = 2;
::encode(struct_v, bl);
::encode(name, bl);
::encode(global_id, bl);
::encode(auid, bl);
::encode(created, bl);
::encode(expires, bl);
::encode(caps, bl);
::encode(flags, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 struct_v;
::decode(struct_v, bl);
::decode(name, bl);
::decode(global_id, bl);
if (struct_v >= 2)
::decode(auid, bl);
else auid = CEPH_AUTH_UID_DEFAULT;
::decode(created, bl);
::decode(expires, bl);
::decode(caps, bl);
::decode(flags, bl);
}
};
WRITE_CLASS_ENCODER(AuthTicket)
/*
* abstract authorizer class
*/
struct AuthAuthorizer {
__u32 protocol;
bufferlist bl;
AuthAuthorizer(__u32 p) : protocol(p) {}
virtual ~AuthAuthorizer() {}
virtual bool verify_reply(bufferlist::iterator& reply) = 0;
};
/*
* Key management
*/
#define KEY_ROTATE_NUM 3 /* prev, current, next */
struct ExpiringCryptoKey {
CryptoKey key;
utime_t expiration;
void encode(bufferlist& bl) const {
__u8 struct_v = 1;
::encode(struct_v, bl);
::encode(key, bl);
::encode(expiration, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 struct_v;
::decode(struct_v, bl);
::decode(key, bl);
::decode(expiration, bl);
}
};
WRITE_CLASS_ENCODER(ExpiringCryptoKey);
static inline ostream& operator<<(ostream& out, const ExpiringCryptoKey& c)
{
return out << c.key << " expires " << c.expiration;
}
struct RotatingSecrets {
map<uint64_t, ExpiringCryptoKey> secrets;
version_t max_ver;
RotatingSecrets() : max_ver(0) {}
void encode(bufferlist& bl) const {
__u8 struct_v = 1;
::encode(struct_v, bl);
::encode(secrets, bl);
::encode(max_ver, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 struct_v;
::decode(struct_v, bl);
::decode(secrets, bl);
::decode(max_ver, bl);
}
uint64_t add(ExpiringCryptoKey& key) {
secrets[++max_ver] = key;
while (secrets.size() > KEY_ROTATE_NUM)
secrets.erase(secrets.begin());
return max_ver;
}
bool need_new_secrets() const {
return secrets.size() < KEY_ROTATE_NUM;
}
bool need_new_secrets(utime_t now) const {
return secrets.size() < KEY_ROTATE_NUM || current().expiration <= now;
}
ExpiringCryptoKey& previous() {
return secrets.begin()->second;
}
ExpiringCryptoKey& current() {
map<uint64_t, ExpiringCryptoKey>::iterator p = secrets.begin();
p++;
return p->second;
}
const ExpiringCryptoKey& current() const {
map<uint64_t, ExpiringCryptoKey>::const_iterator p = secrets.begin();
p++;
return p->second;
}
ExpiringCryptoKey& next() {
return secrets.rbegin()->second;
}
bool empty() {
return secrets.empty();
}
void dump();
};
WRITE_CLASS_ENCODER(RotatingSecrets);
class KeyStore {
public:
virtual ~KeyStore() {}
virtual bool get_secret(const EntityName& name, CryptoKey& secret) const = 0;
virtual bool get_service_secret(uint32_t service_id, uint64_t secret_id,
CryptoKey& secret) const = 0;
};
static inline bool auth_principal_needs_rotating_keys(EntityName& name)
{
uint32_t ty(name.get_type());
return ((ty == CEPH_ENTITY_TYPE_OSD) || (ty == CEPH_ENTITY_TYPE_MDS));
}
#endif
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