[bugfix] boost and account recursion (#2982)

* fix possible infinite recursion if moved accounts are self-referential

* adds a defensive check for a boost being a boost of a boost wrapper

* add checks on input for a boost of a boost

* remove unnecessary check

* add protections on account move to prevent move recursion loops

* separate status conversion without boost logic into separate function to remove risk of recursion

* move boost check to boost function itself

* formatting

* use error 422 instead of 500

* use gtserror not standard errors package for error creation
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kim 2024-06-10 18:42:41 +00:00 committed by GitHub
commit fd6637df4a
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7 changed files with 244 additions and 127 deletions

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@ -22,7 +22,6 @@ import (
"errors"
"net/url"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@ -56,25 +55,17 @@ func (d *Dereferencer) EnrichAnnounce(
)
}
// Fetch/deref status being boosted.
var target *gtsmodel.Status
if targetURIObj.Host == config.GetHost() {
// This is a local status, fetch from the database
target, err = d.state.DB.GetStatusByURI(ctx, targetURI)
} else {
// This is a remote status, we need to dereference it.
//
// d.GetStatusByURI will handle domain block checking for us,
// so we don't try to deref an announce target on a blocked host.
target, _, err = d.GetStatusByURI(ctx, requestUser, targetURIObj)
// Fetch and dereference status being boosted, noting that
// d.GetStatusByURI handles domain blocks and local statuses.
target, _, err := d.GetStatusByURI(ctx, requestUser, targetURIObj)
if err != nil {
return nil, gtserror.Newf("error fetching boost target %s: %w", targetURI, err)
}
if err != nil {
return nil, gtserror.Newf(
"error getting boost target status %s: %w",
targetURI, err,
)
if target.BoostOfID != "" {
// Ensure that the target is not a boost (should not be possible).
err := gtserror.Newf("target status %s is a boost", targetURI)
return nil, err
}
// Generate an ID for the boost wrapper status.