mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-11-26 19:56:11 +01:00
275 lines
8.6 KiB
Go
275 lines
8.6 KiB
Go
// Copyright 2024 The Forgejo Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package federation
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/models/forgefed"
|
|
"code.gitea.io/gitea/models/repo"
|
|
"code.gitea.io/gitea/models/user"
|
|
"code.gitea.io/gitea/modules/activitypub"
|
|
"code.gitea.io/gitea/modules/auth/password"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/validation"
|
|
|
|
"github.com/google/uuid"
|
|
)
|
|
|
|
// ProcessLikeActivity receives a ForgeLike activity and does the following:
|
|
// Validation of the activity
|
|
// Creation of a (remote) federationHost if not existing
|
|
// Creation of a forgefed Person if not existing
|
|
// Validation of incoming RepositoryID against Local RepositoryID
|
|
// Star the repo if it wasn't already stared
|
|
// Do some mitigation against out of order attacks
|
|
func ProcessLikeActivity(ctx context.Context, form any, repositoryID int64) (int, string, error) {
|
|
activity := form.(*forgefed.ForgeLike)
|
|
if res, err := validation.IsValid(activity); !res {
|
|
return http.StatusNotAcceptable, "Invalid activity", err
|
|
}
|
|
log.Info("Activity validated:%v", activity)
|
|
|
|
// parse actorID (person)
|
|
actorURI := activity.Actor.GetID().String()
|
|
log.Info("actorURI was: %v", actorURI)
|
|
federationHost, err := GetFederationHostForUri(ctx, actorURI)
|
|
if err != nil {
|
|
return http.StatusInternalServerError, "Wrong FederationHost", err
|
|
}
|
|
if !activity.IsNewer(federationHost.LatestActivity) {
|
|
return http.StatusNotAcceptable, "Activity out of order.", fmt.Errorf("Activity already processed")
|
|
}
|
|
actorID, err := forgefed.NewPersonID(actorURI, string(federationHost.NodeInfo.Source))
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Invalid PersonID", err
|
|
}
|
|
log.Info("Actor accepted:%v", actorID)
|
|
|
|
// parse objectID (repository)
|
|
objectID, err := forgefed.NewRepositoryID(activity.Object.GetID().String(), string(forgefed.ForgejoSourceType))
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Invalid objectId", err
|
|
}
|
|
if objectID.ID != fmt.Sprint(repositoryID) {
|
|
return http.StatusNotAcceptable, "Invalid objectId", err
|
|
}
|
|
log.Info("Object accepted:%v", objectID)
|
|
|
|
// Check if user already exists
|
|
user, _, err := user.FindFederatedUser(ctx, actorID.ID, federationHost.ID)
|
|
if err != nil {
|
|
return http.StatusInternalServerError, "Searching for user failed", err
|
|
}
|
|
if user != nil {
|
|
log.Info("Found local federatedUser: %v", user)
|
|
} else {
|
|
user, _, err = CreateUserFromAP(ctx, actorID, federationHost.ID)
|
|
if err != nil {
|
|
return http.StatusInternalServerError, "Error creating federatedUser", err
|
|
}
|
|
log.Info("Created federatedUser from ap: %v", user)
|
|
}
|
|
log.Info("Got user:%v", user.Name)
|
|
|
|
// execute the activity if the repo was not stared already
|
|
alreadyStared := repo.IsStaring(ctx, user.ID, repositoryID)
|
|
if !alreadyStared {
|
|
err = repo.StarLocalRepo(ctx, user.ID, repositoryID, true)
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Error staring", err
|
|
}
|
|
}
|
|
federationHost.LatestActivity = activity.StartTime
|
|
err = forgefed.UpdateFederationHost(ctx, federationHost)
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Error updating federatedHost", err
|
|
}
|
|
|
|
return 0, "", nil
|
|
}
|
|
|
|
func CreateFederationHostFromAP(ctx context.Context, actorID forgefed.ActorID) (*forgefed.FederationHost, error) {
|
|
actionsUser := user.NewActionsUser()
|
|
client, err := activitypub.NewClient(ctx, actionsUser, "no idea where to get key material.")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
body, err := client.GetBody(actorID.AsWellKnownNodeInfoURI())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
nodeInfoWellKnown, err := forgefed.NewNodeInfoWellKnown(body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
body, err = client.GetBody(nodeInfoWellKnown.Href)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
nodeInfo, err := forgefed.NewNodeInfo(body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result, err := forgefed.NewFederationHost(nodeInfo, actorID.Host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = forgefed.CreateFederationHost(ctx, &result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &result, nil
|
|
}
|
|
|
|
func GetFederationHostForUri(ctx context.Context, actorURI string) (*forgefed.FederationHost, error) {
|
|
// parse actorID (person)
|
|
log.Info("Input was: %v", actorURI)
|
|
rawActorID, err := forgefed.NewActorID(actorURI)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
federationHost, err := forgefed.FindFederationHostByFqdn(ctx, rawActorID.Host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if federationHost == nil {
|
|
result, err := CreateFederationHostFromAP(ctx, rawActorID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
federationHost = result
|
|
}
|
|
return federationHost, nil
|
|
}
|
|
|
|
func CreateUserFromAP(ctx context.Context, personID forgefed.PersonID, federationHostID int64) (*user.User, *user.FederatedUser, error) {
|
|
// ToDo: Do we get a publicKeyId from server, repo or owner or repo?
|
|
actionsUser := user.NewActionsUser()
|
|
client, err := activitypub.NewClient(ctx, actionsUser, "no idea where to get key material.")
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
body, err := client.GetBody(personID.AsURI())
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
person := forgefed.ForgePerson{}
|
|
err = person.UnmarshalJSON(body)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if res, err := validation.IsValid(person); !res {
|
|
return nil, nil, err
|
|
}
|
|
log.Info("Fetched valid person:%q", person)
|
|
|
|
localFqdn, err := url.ParseRequestURI(setting.AppURL)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
email := fmt.Sprintf("f%v@%v", uuid.New().String(), localFqdn.Hostname())
|
|
loginName := personID.AsLoginName()
|
|
name := fmt.Sprintf("%v%v", person.PreferredUsername.String(), personID.HostSuffix())
|
|
fullName := person.Name.String()
|
|
if len(person.Name) == 0 {
|
|
fullName = name
|
|
}
|
|
password, err := password.Generate(32)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
newUser := user.User{
|
|
LowerName: strings.ToLower(person.PreferredUsername.String()),
|
|
Name: name,
|
|
FullName: fullName,
|
|
Email: email,
|
|
EmailNotificationsPreference: "disabled",
|
|
Passwd: password,
|
|
MustChangePassword: false,
|
|
LoginName: loginName,
|
|
Type: user.UserTypeRemoteUser,
|
|
IsAdmin: false,
|
|
}
|
|
federatedUser := user.FederatedUser{
|
|
ExternalID: personID.ID,
|
|
FederationHostID: federationHostID,
|
|
}
|
|
err = user.CreateFederatedUser(ctx, &newUser, &federatedUser)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
log.Info("Created federatedUser:%q", federatedUser)
|
|
|
|
return &newUser, &federatedUser, nil
|
|
}
|
|
|
|
// Create or update a list of FederatedRepo structs
|
|
func StoreFederatedRepoList(ctx context.Context, localRepoId int64, federatedRepoList []string) (int, string, error) {
|
|
federatedRepos := make([]*repo.FederatedRepo, 0, len(federatedRepoList))
|
|
for _, uri := range federatedRepoList {
|
|
federationHost, err := GetFederationHostForUri(ctx, uri)
|
|
if err != nil {
|
|
return http.StatusInternalServerError, "Wrong FederationHost", err
|
|
}
|
|
federatedRepoID, err := forgefed.NewRepositoryID(uri, string(federationHost.NodeInfo.Source))
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Invalid federated repo", err
|
|
}
|
|
federatedRepo, err := repo.NewFederatedRepo(localRepoId, federatedRepoID.ID, federationHost.ID, uri)
|
|
if err != nil {
|
|
return http.StatusNotAcceptable, "Invalid federated repo", err
|
|
}
|
|
federatedRepos = append(federatedRepos, &federatedRepo)
|
|
}
|
|
|
|
repo.StoreFederatedRepos(ctx, localRepoId, federatedRepos)
|
|
|
|
return 0, "", nil
|
|
}
|
|
|
|
func SendLikeActivities(ctx context.Context, doer user.User, repoID int64) error {
|
|
|
|
federatedRepos, err := repo.FindFederatedReposByRepoID(ctx, repoID)
|
|
log.Info("Federated Repos is: %v", federatedRepos)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
/*apclient, err := activitypub.NewClient(ctx, &doer, doer.APAPIURL())
|
|
if err != nil {
|
|
return err
|
|
}*/
|
|
|
|
for _, federatedRepo := range federatedRepos {
|
|
target := federatedRepo.Uri + "/inbox/" // A like goes to the inbox of the federated repo
|
|
log.Info("Federated Repo URI is: %v", target)
|
|
likeActivity, err := forgefed.NewForgeLike(doer.APAPIURL(), target, time.Now())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Info("Like Activity: %v", likeActivity)
|
|
/*json, err := likeActivity.MarshalJSON()
|
|
if err != nil {
|
|
return err
|
|
}*/
|
|
|
|
// TODO: decouple loading & creating activities from sending them - use two loops.
|
|
// TODO: set timeouts for outgoing request in oder to mitigate DOS by slow lories
|
|
// TODO: Check if we need to respect rate limits
|
|
// ToDo: Change this to the standalone table of FederatedRepos
|
|
//apclient.Post([]byte(json), target)
|
|
}
|
|
|
|
return nil
|
|
}
|