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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "capability_set.h"
#include <vespa/vespalib/stllike/string.h>
#include <memory>
#include <vector>
#include <iosfwd>
namespace vespalib::net::tls {
struct CredentialMatchPattern {
virtual ~CredentialMatchPattern() = default;
[[nodiscard]] virtual bool matches(vespalib::stringref str) const noexcept = 0;
static std::shared_ptr<const CredentialMatchPattern> create_from_dns_glob(vespalib::stringref glob_pattern);
static std::shared_ptr<const CredentialMatchPattern> create_from_uri_glob(vespalib::stringref glob_pattern);
static std::shared_ptr<const CredentialMatchPattern> create_exact_match(vespalib::stringref pattern);
};
class RequiredPeerCredential {
public:
enum class Field {
CN, SAN_DNS, SAN_URI
};
private:
Field _field = Field::SAN_DNS;
vespalib::string _original_pattern;
std::shared_ptr<const CredentialMatchPattern> _match_pattern;
public:
RequiredPeerCredential() = default;
RequiredPeerCredential(Field field, vespalib::string must_match_pattern);
RequiredPeerCredential(const RequiredPeerCredential &) noexcept;
RequiredPeerCredential & operator=(const RequiredPeerCredential &) = delete;
RequiredPeerCredential(RequiredPeerCredential &&) noexcept;
RequiredPeerCredential & operator=(RequiredPeerCredential &&) noexcept;
~RequiredPeerCredential();
bool operator==(const RequiredPeerCredential& rhs) const {
// We assume (opaque) _match_pattern matches rhs._match_pattern if the pattern
// strings they were created from are equal. This should be fully deterministic.
return ((_field == rhs._field)
&& (_original_pattern == rhs._original_pattern));
}
[[nodiscard]] bool matches(vespalib::stringref str) const noexcept {
return (_match_pattern && _match_pattern->matches(str));
}
[[nodiscard]] Field field() const noexcept { return _field; }
[[nodiscard]] const vespalib::string& original_pattern() const noexcept { return _original_pattern; }
};
class PeerPolicy {
// _All_ credentials must match for the policy itself to match.
std::vector<RequiredPeerCredential> _required_peer_credentials;
CapabilitySet _granted_capabilities;
public:
PeerPolicy();
// This policy is created with a full capability set, i.e. unrestricted access.
explicit PeerPolicy(std::vector<RequiredPeerCredential> required_peer_credentials);
PeerPolicy(std::vector<RequiredPeerCredential> required_peer_credentials,
CapabilitySet granted_capabilities);
~PeerPolicy();
bool operator==(const PeerPolicy& rhs) const noexcept {
return ((_required_peer_credentials == rhs._required_peer_credentials) &&
(_granted_capabilities == rhs._granted_capabilities));
}
[[nodiscard]] const std::vector<RequiredPeerCredential>& required_peer_credentials() const noexcept {
return _required_peer_credentials;
}
[[nodiscard]] const CapabilitySet& granted_capabilities() const noexcept {
return _granted_capabilities;
}
};
class AuthorizedPeers {
// A peer will be authorized iff it matches _one or more_ policies.
std::vector<PeerPolicy> _peer_policies;
bool _allow_all_if_empty;
explicit AuthorizedPeers(bool allow_all_if_empty)
: _peer_policies(),
_allow_all_if_empty(allow_all_if_empty)
{}
public:
AuthorizedPeers() : _peer_policies(), _allow_all_if_empty(false) {}
explicit AuthorizedPeers(std::vector<PeerPolicy> peer_policies_)
: _peer_policies(std::move(peer_policies_)),
_allow_all_if_empty(false)
{}
AuthorizedPeers(const AuthorizedPeers&);
AuthorizedPeers& operator=(const AuthorizedPeers&) = delete;
AuthorizedPeers(AuthorizedPeers&&) noexcept;
AuthorizedPeers& operator=(AuthorizedPeers&&) noexcept;
~AuthorizedPeers();
static AuthorizedPeers allow_all_authenticated() {
return AuthorizedPeers(true);
}
bool operator==(const AuthorizedPeers& rhs) const {
return (_peer_policies == rhs._peer_policies);
}
[[nodiscard]] bool allows_all_authenticated() const noexcept {
return _allow_all_if_empty;
}
[[nodiscard]] const std::vector<PeerPolicy>& peer_policies() const noexcept { return _peer_policies; }
};
std::ostream& operator<<(std::ostream&, const RequiredPeerCredential&);
std::ostream& operator<<(std::ostream&, const PeerPolicy&);
std::ostream& operator<<(std::ostream&, const AuthorizedPeers&);
} // vespalib::net::tls
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