gotosocial/internal/processing/status/create.go

357 lines
12 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// 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/>.
package status
import (
"context"
"errors"
"fmt"
"time"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/text"
"github.com/superseriousbusiness/gotosocial/internal/typeutils"
"github.com/superseriousbusiness/gotosocial/internal/uris"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// Create processes the given form to create a new status, returning the api model representation of that status if it's OK.
//
// Precondition: the form's fields should have already been validated and normalized by the caller.
func (p *Processor) Create(ctx context.Context, requestingAccount *gtsmodel.Account, application *gtsmodel.Application, form *apimodel.AdvancedStatusCreateForm) (*apimodel.Status, gtserror.WithCode) {
// Generate new ID for status.
statusID := id.NewULID()
// Generate necessary URIs for username, to build status URIs.
accountURIs := uris.GenerateURIsForAccount(requestingAccount.Username)
// Get current time.
now := time.Now()
status := &gtsmodel.Status{
ID: statusID,
URI: accountURIs.StatusesURI + "/" + statusID,
URL: accountURIs.StatusesURL + "/" + statusID,
CreatedAt: now,
UpdatedAt: now,
Local: util.Ptr(true),
Account: requestingAccount,
AccountID: requestingAccount.ID,
AccountURI: requestingAccount.URI,
ActivityStreamsType: ap.ObjectNote,
Sensitive: &form.Sensitive,
CreatedWithApplicationID: application.ID,
Text: form.Status,
}
if errWithCode := p.processReplyToID(ctx, form, requestingAccount.ID, status); errWithCode != nil {
return nil, errWithCode
}
if errWithCode := p.processMediaIDs(ctx, form, requestingAccount.ID, status); errWithCode != nil {
return nil, errWithCode
}
if err := processVisibility(form, requestingAccount.Privacy, status); err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if err := processLanguage(form, requestingAccount.Language, status); err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if err := p.processContent(ctx, p.parseMention, form, status); err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
// Insert this new status in the database.
if err := p.state.DB.PutStatus(ctx, status); err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
// send it back to the client API worker for async side-effects.
p.state.Workers.EnqueueClientAPI(ctx, messages.FromClientAPI{
APObjectType: ap.ObjectNote,
APActivityType: ap.ActivityCreate,
GTSModel: status,
OriginAccount: requestingAccount,
})
return p.apiStatus(ctx, status, requestingAccount)
}
func (p *Processor) processReplyToID(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
if form.InReplyToID == "" {
return nil
}
// If this status is a reply to another status, we need to do a bit of work to establish whether or not this status can be posted:
//
// 1. Does the replied status exist in the database?
// 2. Is the replied status marked as replyable?
// 3. Does a block exist between either the current account or the account that posted the status it's replying to?
//
// If this is all OK, then we fetch the repliedStatus and the repliedAccount for later processing.
inReplyTo, err := p.state.DB.GetStatusByID(ctx, form.InReplyToID)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("error fetching status %s from db: %w", form.InReplyToID, err)
return gtserror.NewErrorInternalError(err)
}
if inReplyTo == nil {
const text = "cannot reply to status that does not exist"
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
if !*inReplyTo.Replyable {
text := fmt.Sprintf("status %s is marked as not replyable", form.InReplyToID)
return gtserror.NewErrorForbidden(errors.New(text), text)
}
if blocked, err := p.state.DB.IsEitherBlocked(ctx, thisAccountID, inReplyTo.AccountID); err != nil {
err := gtserror.Newf("error checking block in db: %w", err)
return gtserror.NewErrorInternalError(err)
} else if blocked {
text := fmt.Sprintf("status %s is not replyable", form.InReplyToID)
return gtserror.NewErrorNotFound(errors.New(text), text)
}
// Set status fields from inReplyTo.
status.InReplyToID = inReplyTo.ID
status.InReplyToURI = inReplyTo.URI
status.InReplyToAccountID = inReplyTo.AccountID
return nil
}
func (p *Processor) processMediaIDs(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
if form.MediaIDs == nil {
return nil
}
// Get minimum allowed char descriptions.
minChars := config.GetMediaDescriptionMinChars()
attachments := []*gtsmodel.MediaAttachment{}
attachmentIDs := []string{}
for _, mediaID := range form.MediaIDs {
attachment, err := p.state.DB.GetAttachmentByID(ctx, mediaID)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("error fetching media from db: %w", err)
return gtserror.NewErrorInternalError(err)
}
if attachment == nil {
text := fmt.Sprintf("media %s not found", mediaID)
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
if attachment.AccountID != thisAccountID {
text := fmt.Sprintf("media %s does not belong to account", mediaID)
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
if attachment.StatusID != "" || attachment.ScheduledStatusID != "" {
text := fmt.Sprintf("media %s already attached to status", mediaID)
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
if length := len([]rune(attachment.Description)); length < minChars {
text := fmt.Sprintf("media %s description too short, at least %d required", mediaID, minChars)
return gtserror.NewErrorBadRequest(errors.New(text), text)
}
attachments = append(attachments, attachment)
attachmentIDs = append(attachmentIDs, attachment.ID)
}
status.Attachments = attachments
status.AttachmentIDs = attachmentIDs
return nil
}
func processVisibility(form *apimodel.AdvancedStatusCreateForm, accountDefaultVis gtsmodel.Visibility, status *gtsmodel.Status) error {
// by default all flags are set to true
federated := true
boostable := true
replyable := true
likeable := true
// If visibility isn't set on the form, then just take the account default.
// If that's also not set, take the default for the whole instance.
var vis gtsmodel.Visibility
switch {
case form.Visibility != "":
vis = typeutils.APIVisToVis(form.Visibility)
case accountDefaultVis != "":
vis = accountDefaultVis
default:
vis = gtsmodel.VisibilityDefault
}
switch vis {
case gtsmodel.VisibilityPublic:
// for public, there's no need to change any of the advanced flags from true regardless of what the user filled out
break
case gtsmodel.VisibilityUnlocked:
// for unlocked the user can set any combination of flags they like so look at them all to see if they're set and then apply them
if form.Federated != nil {
federated = *form.Federated
}
if form.Boostable != nil {
boostable = *form.Boostable
}
if form.Replyable != nil {
replyable = *form.Replyable
}
if form.Likeable != nil {
likeable = *form.Likeable
}
case gtsmodel.VisibilityFollowersOnly, gtsmodel.VisibilityMutualsOnly:
// for followers or mutuals only, boostable will *always* be false, but the other fields can be set so check and apply them
boostable = false
if form.Federated != nil {
federated = *form.Federated
}
if form.Replyable != nil {
replyable = *form.Replyable
}
if form.Likeable != nil {
likeable = *form.Likeable
}
case gtsmodel.VisibilityDirect:
// direct is pretty easy: there's only one possible setting so return it
federated = true
boostable = false
replyable = true
likeable = true
}
status.Visibility = vis
status.Federated = &federated
status.Boostable = &boostable
status.Replyable = &replyable
status.Likeable = &likeable
return nil
}
func processLanguage(form *apimodel.AdvancedStatusCreateForm, accountDefaultLanguage string, status *gtsmodel.Status) error {
if form.Language != "" {
status.Language = form.Language
} else {
status.Language = accountDefaultLanguage
}
if status.Language == "" {
return errors.New("no language given either in status create form or account default")
}
return nil
}
func (p *Processor) processContent(ctx context.Context, parseMention gtsmodel.ParseMentionFunc, form *apimodel.AdvancedStatusCreateForm, status *gtsmodel.Status) error {
if form.ContentType == "" {
// If content type wasn't specified, use the author's preferred content-type.
contentType := apimodel.StatusContentType(status.Account.StatusContentType)
form.ContentType = contentType
}
// format is the currently set text formatting
// function, according to the provided content-type.
var format text.FormatFunc
// formatInput is a shorthand function to format the given input string with the
// currently set 'formatFunc', passing in all required args and returning result.
formatInput := func(formatFunc text.FormatFunc, input string) *text.FormatResult {
return formatFunc(ctx, parseMention, status.AccountID, status.ID, input)
}
switch form.ContentType {
// None given / set,
// use default (plain).
case "":
fallthrough
// Format status according to text/plain.
case apimodel.StatusContentTypePlain:
format = p.formatter.FromPlain
// Format status according to text/markdown.
case apimodel.StatusContentTypeMarkdown:
format = p.formatter.FromMarkdown
// Unknown.
default:
return fmt.Errorf("invalid status format: %q", form.ContentType)
}
// Sanitize status text and format.
contentRes := formatInput(format, form.Status)
// Collect formatted results.
status.Content = contentRes.HTML
status.Mentions = append(status.Mentions, contentRes.Mentions...)
status.Emojis = append(status.Emojis, contentRes.Emojis...)
status.Tags = append(status.Tags, contentRes.Tags...)
// From here-on-out just use emoji-only
// plain-text formatting as the FormatFunc.
format = p.formatter.FromPlainEmojiOnly
// Sanitize content warning and format.
spoiler := text.SanitizeToPlaintext(form.SpoilerText)
warningRes := formatInput(format, spoiler)
// Collect formatted results.
status.ContentWarning = warningRes.HTML
status.Emojis = append(status.Emojis, warningRes.Emojis...)
// Gather all the database IDs from each of the gathered status mentions, tags, and emojis.
status.MentionIDs = gatherIDs(status.Mentions, func(mention *gtsmodel.Mention) string { return mention.ID })
status.TagIDs = gatherIDs(status.Tags, func(tag *gtsmodel.Tag) string { return tag.ID })
status.EmojiIDs = gatherIDs(status.Emojis, func(emoji *gtsmodel.Emoji) string { return emoji.ID })
return nil
}
// gatherIDs is a small utility function to gather IDs from a slice of type T.
func gatherIDs[T any](in []T, getID func(T) string) []string {
if getID == nil {
// move nil check out loop.
panic("nil getID function")
}
ids := make([]string, len(in))
for i, t := range in {
ids[i] = getID(t)
}
return ids
}