mirror of
https://github.com/superseriousbusiness/gotosocial.git
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754b7be9cf
~~Still WIP!~~ This PR allows v0.20.0 of GtS to be forward-compatible with the interaction request / authorization flow that will fully replace the current flow in v0.21.0. Basically, this means we need to recognize LikeRequest, ReplyRequest, and AnnounceRequest, and in response to those requests, deliver either a Reject or an Accept, with the latter pointing towards a LikeAuthorization, ReplyAuthorization, or AnnounceAuthorization, respectively. This can then be used by the remote instance to prove to third parties that the interaction has been accepted by the interactee. These Authorization types need to be dereferencable to third parties, so we need to serve them. As well as recognizing the above "polite" interaction request types, we also need to still serve appropriate responses to "impolite" interaction request types, where an instance that's unaware of interaction policies tries to interact with a post by sending a reply, like, or boost directly, without wrapping it in a WhateverRequest type. Doesn't fully close https://codeberg.org/superseriousbusiness/gotosocial/issues/4026 but gets damn near (just gotta update the federating with GtS documentation). Migrations tested on both Postgres and SQLite. Co-authored-by: kim <grufwub@gmail.com> Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4394 Co-authored-by: tobi <tobi.smethurst@protonmail.com> Co-committed-by: tobi <tobi.smethurst@protonmail.com>
104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package id
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import (
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"crypto/rand"
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"math/big"
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"time"
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"code.superseriousbusiness.org/gotosocial/internal/gtserror"
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"code.superseriousbusiness.org/gotosocial/internal/log"
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"codeberg.org/gruf/go-kv/v2"
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"github.com/oklog/ulid"
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)
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const (
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Highest = "ZZZZZZZZZZZZZZZZZZZZZZZZZZ" // Highest is the highest possible ULID
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Lowest = "00000000000000000000000000" // Lowest is the lowest possible ULID
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randomRange = 631152381 // ~20 years in seconds
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)
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// bigRandomRange contains randomRange as big.Int.
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var bigRandomRange = big.NewInt(randomRange)
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// ULID represents a Universally Unique Lexicographically Sortable Identifier of 26 characters. See https://github.com/oklog/ulid
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type ULID string
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// newAt returns a new ulid.ULID from timestamp,
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// else panics with caller's caller information.
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func newAt(ts uint64) string {
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ulid, err := ulid.New(ts, rand.Reader)
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if err != nil {
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panic(gtserror.NewfAt(4, "error generating ulid: %w", err))
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}
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return ulid.String()
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}
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// NewULID returns a new ULID
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// string using the current time.
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func NewULID() string {
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return newAt(ulid.Now())
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}
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// NewULIDFromTime returns a new ULID string using
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// given time, or from current time on any error.
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func NewULIDFromTime(t time.Time) string {
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ts := ulid.Timestamp(t)
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if ts > ulid.MaxTime() {
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log.WarnKVs(nil, kv.Fields{
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{K: "caller", V: log.Caller(3)},
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{K: "value", V: t},
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{K: "msg", V: "invalid ulid time"},
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}...)
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ts = ulid.Now()
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}
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return newAt(ts)
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}
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// NewRandomULID returns a new ULID string using a random
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// time in an ~80 year range around the current datetime.
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func NewRandomULID() string {
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n1, err := rand.Int(rand.Reader, bigRandomRange)
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if err != nil {
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panic(gtserror.NewfAt(3, "error reading rand: %w", err))
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}
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n2, err := rand.Int(rand.Reader, bigRandomRange)
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if err != nil {
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panic(gtserror.NewfAt(3, "error reading rand: %w", err))
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}
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// Random addition and decrement durations.
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add := time.Duration(n1.Int64()) * time.Second
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dec := -time.Duration(n2.Int64()) * time.Second
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// Return new ULID string from now.
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t := time.Now().Add(add).Add(dec)
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return newAt(ulid.Timestamp(t))
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}
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// TimeFromULID parses a ULID string and returns the
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// encoded time.Time{}, or error with caller prefix.
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func TimeFromULID(id string) (time.Time, error) {
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parsed, err := ulid.ParseStrict(id)
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if err != nil {
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return time.Time{}, gtserror.NewfAt(3, "could not extract time (malformed ulid): %w", err)
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}
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return ulid.Time(parsed.Time()), nil
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}
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