mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-27 13:39:19 -05:00
98 lines
2.8 KiB
Go
98 lines
2.8 KiB
Go
// Copyright 2024 The Forgejo Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package federation
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import (
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"context"
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"fmt"
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"net/http"
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"code.gitea.io/gitea/models/forgefed"
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"code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/activitypub"
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fm "code.gitea.io/gitea/modules/forgefed"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/validation"
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)
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// ProcessLikeActivity receives a ForgeLike activity and does the following:
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// Validation of the activity
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// Creation of a (remote) federationHost if not existing
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// Creation of a forgefed Person if not existing
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// Validation of incoming RepositoryID against Local RepositoryID
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// Star the repo if it wasn't already stared
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// Do some mitigation against out of order attacks
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func ProcessLikeActivity(ctx context.Context, form any, repositoryID int64) (int, string, error) {
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activity := form.(*fm.ForgeLike)
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if res, err := validation.IsValid(activity); !res {
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return http.StatusNotAcceptable, "Invalid activity", err
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}
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log.Info("Activity validated:%v", activity)
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// parse actorID (person)
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actorURI := activity.Actor.GetID().String()
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log.Info("actorURI was: %v", actorURI)
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federationHost, err := GetFederationHostForURI(ctx, actorURI)
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if err != nil {
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return http.StatusInternalServerError, "Wrong FederationHost", err
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}
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if !activity.IsNewer(federationHost.LatestActivity) {
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return http.StatusNotAcceptable, "Activity out of order.", fmt.Errorf("Activity already processed")
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}
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return 0, "", nil
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}
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func CreateFederationHostFromAP(ctx context.Context, actorID fm.ActorID) (*forgefed.FederationHost, error) {
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actionsUser := user.NewActionsUser()
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client, err := activitypub.NewClient(ctx, actionsUser, "no idea where to get key material.")
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if err != nil {
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return nil, err
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}
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body, err := client.GetBody(actorID.AsWellKnownNodeInfoURI())
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if err != nil {
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return nil, err
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}
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nodeInfoWellKnown, err := forgefed.NewNodeInfoWellKnown(body)
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if err != nil {
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return nil, err
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}
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body, err = client.GetBody(nodeInfoWellKnown.Href)
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if err != nil {
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return nil, err
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}
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nodeInfo, err := forgefed.NewNodeInfo(body)
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if err != nil {
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return nil, err
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}
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result, err := forgefed.NewFederationHost(nodeInfo, actorID.Host)
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if err != nil {
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return nil, err
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}
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err = forgefed.CreateFederationHost(ctx, &result)
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if err != nil {
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return nil, err
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}
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return &result, nil
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}
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func GetFederationHostForURI(ctx context.Context, actorURI string) (*forgefed.FederationHost, error) {
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log.Info("Input was: %v", actorURI)
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rawActorID, err := fm.NewActorID(actorURI)
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if err != nil {
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return nil, err
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}
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federationHost, err := forgefed.FindFederationHostByFqdn(ctx, rawActorID.Host)
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if err != nil {
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return nil, err
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}
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if federationHost == nil {
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result, err := CreateFederationHostFromAP(ctx, rawActorID)
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if err != nil {
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return nil, err
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}
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federationHost = result
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}
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return federationHost, nil
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}
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