forgejo/modules/forgefed/federation_service.go
Michael Jerger 3b244d673b small fixes
2024-02-10 15:21:17 +01:00

195 lines
5.9 KiB
Go

// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package forgefed
import (
"fmt"
"net/http"
"net/url"
"strings"
"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/context"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/validation"
"github.com/google/uuid"
)
func LikeActivity(ctx *context.APIContext, form any, repositoryId int64) (error, int, string) {
activity := form.(*forgefed.ForgeLike)
if res, err := validation.IsValid(activity); !res {
return err, http.StatusNotAcceptable, "Invalid activity"
}
log.Info("Activity validated:%v", activity)
// parse actorID (person)
actorURI := activity.Actor.GetID().String()
rawActorID, err := forgefed.NewActorID(actorURI)
if err != nil {
return err, http.StatusInternalServerError, "Invalid ActorID"
}
federationHost, err := forgefed.FindFederationHostByFqdn(ctx, rawActorID.Host)
if err != nil {
return err, http.StatusInternalServerError, "Could not loading FederationHost"
}
if federationHost == nil {
result, err := CreateFederationHostFromAP(ctx, rawActorID)
if err != nil {
return err, http.StatusNotAcceptable, "Invalid FederationHost"
}
federationHost = result
}
if !activity.IsNewer(federationHost.LatestActivity) {
return fmt.Errorf("Activity already processed"), http.StatusNotAcceptable, "Activity out of order."
}
actorID, err := forgefed.NewPersonID(actorURI, string(federationHost.NodeInfo.Source))
if err != nil {
return err, http.StatusNotAcceptable, "Invalid PersonID"
}
log.Info("Actor accepted:%v", actorID)
// parse objectID (repository)
objectID, err := forgefed.NewRepositoryID(activity.Object.GetID().String(), string(forgefed.ForgejoSourceType))
if err != nil {
return err, http.StatusNotAcceptable, "Invalid objectId"
}
if objectID.ID != fmt.Sprint(repositoryId) {
return err, http.StatusNotAcceptable, "Invalid objectId"
}
log.Info("Object accepted:%v", objectID)
// Check if user already exists
user, _, err := user.FindFederatedUser(ctx, actorID.ID, federationHost.ID)
if err != nil {
return err, http.StatusInternalServerError, "Searching for user failed"
}
if user != nil {
log.Info("Found local federatedUser: %v", user)
} else {
user, _, err = CreateUserFromAP(ctx, actorID, federationHost.ID)
if err != nil {
return err, http.StatusInternalServerError, "Error creating federatedUser"
}
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.StarRepo(ctx, user.ID, repositoryId, true)
if err != nil {
return err, http.StatusNotAcceptable, "Error staring"
}
}
federationHost.LatestActivity = activity.StartTime
err = forgefed.UpdateFederationHost(ctx, federationHost)
if err != nil {
return err, http.StatusNotAcceptable, "Error updating federatedHost"
}
return nil, 0, ""
}
func CreateFederationHostFromAP(ctx *context.APIContext, 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 CreateUserFromAP(ctx *context.APIContext, 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
}