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construct/include/ircd/m/event/conforms.h

92 lines
4 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_M_EVENT_CONFORMS_H
/// Device to evaluate the conformity of an event object. This is an 'in vitro'
/// or 'pure' evaluation: it determines if the event is reasonably sane enough
/// to be evaluated further using only the information in the event itself. It
/// requires nothing external and conducts no IO etc..
///
/// This evaluation does not throw or stop when a check fails: instead it
/// collects the failures allowing the user to further determine how to proceed
/// at their own discretion.
///
struct ircd::m::event::conforms
{
enum code :uint;
uint64_t report {0};
bool clean() const;
operator bool() const;
bool operator!() const;
bool has(const uint &code) const;
bool has(const code &code) const;
string_view string(const mutable_buffer &out) const;
void set(const code &code);
void del(const code &code);
void operator|=(const code &) &;
conforms() = default;
conforms(const event &);
conforms(const event &, const uint64_t &skip);
static code reflect(const string_view &);
};
namespace ircd::m
{
string_view reflect(const event::conforms::code &);
std::ostream &operator<<(std::ostream &, const event::conforms &);
}
/// Report codes corresponding to the checks conducted by event::conforms.
/// Developers: If you add a code here you must also add a string reflection
/// in the definition file.
///
enum ircd::m::event::conforms::code
:uint
{
INVALID_OR_MISSING_EVENT_ID, ///< event_id empty or failed mxid grammar check
INVALID_OR_MISSING_ROOM_ID, ///< room_id empty or failed mxid grammar check
INVALID_OR_MISSING_SENDER_ID, ///< sender empty or failed mxid grammar check
MISSING_TYPE, ///< type empty
INVALID_TYPE, ///< type field invalid or too long
MISSING_ORIGIN, ///< origin empty
INVALID_ORIGIN, ///< origin not a proper domain
INVALID_STATE_KEY, ///< state_key invalid or too long
INVALID_OR_MISSING_REDACTS_ID, ///< for m.room.redaction
MISSING_CONTENT_MEMBERSHIP, ///< for m.room.member, content.membership
INVALID_CONTENT_MEMBERSHIP, ///< for m.room.member, content.membership
MISSING_MEMBER_STATE_KEY, ///< for m.room.member, !empty(state_key)
INVALID_MEMBER_STATE_KEY, ///< for m.room.member, !user::id(state_key)
MISSING_PREV_EVENTS, ///< for non-m.room.create, empty prev_events
MISSING_AUTH_EVENTS, ///< for non-m.room.create, empty auth_events
DEPTH_NEGATIVE, ///< depth < 0
DEPTH_ZERO, ///< for non-m.room.create, depth=0
MISSING_SIGNATURES, ///< no signatures
MISSING_ORIGIN_SIGNATURE, ///< no signature for origin
MISMATCH_ORIGIN_SENDER, ///< sender mxid host not from origin
MISMATCH_CREATE_SENDER, ///< m.room.create room_id host != sender host
MISMATCH_ALIASES_STATE_KEY, ///< m.room.aliases has no state_key
SELF_REDACTS, ///< event redacts itself
SELF_PREV_EVENT, ///< event_id self-referenced in prev_events
SELF_AUTH_EVENT, ///< event_id self-referenced in auth_events
DUP_PREV_EVENT, ///< duplicate references in prev_events
DUP_AUTH_EVENT, ///< duplicate references in auth_events
MISMATCH_EVENT_ID, ///< event.event_id isn't the right hash.
MISSING_HASHES, ///< no hashes or recognized algorithm
MISMATCH_HASHES, ///< hashes don't match expected
_NUM_
};