340 lines
9.9 KiB
Go
340 lines
9.9 KiB
Go
// Copyright 2023 The forgejo Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package activitypub
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/models/db"
|
|
"code.gitea.io/gitea/models/forgefed"
|
|
repo_model "code.gitea.io/gitea/models/repo"
|
|
user_model "code.gitea.io/gitea/models/user"
|
|
api "code.gitea.io/gitea/modules/activitypub"
|
|
"code.gitea.io/gitea/modules/context"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/util"
|
|
"code.gitea.io/gitea/modules/web"
|
|
"github.com/google/uuid"
|
|
|
|
ap "github.com/go-ap/activitypub"
|
|
pwd_gen "github.com/sethvargo/go-password/password"
|
|
)
|
|
|
|
// TODO: remove this global var!
|
|
var actionsUser = user_model.NewActionsUser()
|
|
|
|
func generateUUIDMail(person ap.Actor) (string, error) {
|
|
// UUID@remote.host
|
|
id := uuid.New().String()
|
|
|
|
//url, err := url.Parse(person.URL.GetID().String())
|
|
|
|
//host := url.Host
|
|
|
|
return strings.Join([]string{id, "example.com"}, "@"), nil
|
|
}
|
|
|
|
func generateRemoteUserName(person ap.Actor) (string, error) {
|
|
u, err := url.Parse(person.URL.GetID().String())
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
host := strings.Split(u.Host, ":")[0] // no port in username
|
|
|
|
if name := person.PreferredUsername.String(); name != "" {
|
|
return strings.Join([]string{name, host}, "_"), nil
|
|
}
|
|
if name := person.Name.String(); name != "" {
|
|
return strings.Join([]string{name, host}, "_"), nil
|
|
}
|
|
|
|
return "", fmt.Errorf("empty name, preferredUsername field")
|
|
}
|
|
|
|
func generateRandomPassword() (string, error) {
|
|
// Generate a password that is 64 characters long with 10 digits, 10 symbols,
|
|
// allowing upper and lower case letters, disallowing repeat characters.
|
|
res, err := pwd_gen.Generate(32, 10, 10, false, false)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return res, err
|
|
}
|
|
|
|
// TODO: Move this to model.user.search ? or to model.user.externalLoginUser ?
|
|
func SearchUsersByLoginName(loginName string) ([]*user_model.User, error) {
|
|
|
|
actionsUser.IsAdmin = true
|
|
|
|
options := &user_model.SearchUserOptions{
|
|
LoginName: loginName,
|
|
Actor: actionsUser,
|
|
Type: user_model.UserTypeRemoteUser,
|
|
OrderBy: db.SearchOrderByAlphabetically,
|
|
ListOptions: db.ListOptions{PageSize: 1},
|
|
IsActive: util.OptionalBoolFalse,
|
|
IncludeReserved: true,
|
|
}
|
|
users, _, err := user_model.SearchUsers(db.DefaultContext, options)
|
|
if err != nil {
|
|
return []*user_model.User{}, fmt.Errorf("search failed: %v", err)
|
|
}
|
|
|
|
log.Info("local found users: %v", len(users))
|
|
|
|
return users, nil
|
|
|
|
}
|
|
|
|
// TODO: Move most of this fkt to http client
|
|
func getBody(remoteStargazer, starReceiver string, ctx *context.APIContext) ([]byte, error) { // ToDo: We could split this: move body reading to unmarshall
|
|
|
|
// TODO: The star receiver signs the http get request will maybe not work.
|
|
// The remote repo has probably diferent keys as the local one.
|
|
// > The local user signs the request with their private key, the public key is publicly available to anyone. I do not see an issue here.
|
|
// Why should we use a signed request here at all?
|
|
// > To provide an extra layer of security against in flight tampering: https://github.com/go-fed/httpsig/blob/55836744818e/httpsig.go#L116
|
|
|
|
client, err := api.NewClient(ctx, actionsUser, starReceiver) // ToDo: Do we get a publicKeyId of owner or repo?
|
|
if err != nil {
|
|
return []byte{0}, err
|
|
}
|
|
// get_person_by_rest
|
|
response, err := client.Get([]byte{0}, remoteStargazer)
|
|
if err != nil {
|
|
return []byte{0}, err
|
|
}
|
|
defer response.Body.Close()
|
|
body, err := io.ReadAll(response.Body)
|
|
if err != nil {
|
|
return []byte{0}, err
|
|
}
|
|
|
|
log.Info("remoteStargazer: %v", remoteStargazer)
|
|
log.Info("http client. %v", client)
|
|
log.Info("response: %v\n error: ", response, err)
|
|
|
|
return body, nil
|
|
}
|
|
|
|
// TODO: move this to Person or actor
|
|
func unmarshallPersonJSON(body []byte) (ap.Person, error) {
|
|
|
|
// parse response
|
|
person := ap.Person{}
|
|
err := person.UnmarshalJSON(body)
|
|
if err != nil {
|
|
return ap.Person{}, err
|
|
}
|
|
|
|
log.Info("Person is: %v", person)
|
|
log.Info("Person Name is: %v", person.PreferredUsername)
|
|
log.Info("Person URL is: %v", person.URL)
|
|
|
|
return person, nil
|
|
|
|
}
|
|
|
|
// TODO: move this to model.user somwhere ?
|
|
func createFederatedUserFromPerson(person ap.Person, remoteStargazer string) (*user_model.User, error) {
|
|
email, err := generateUUIDMail(person)
|
|
if err != nil {
|
|
return &user_model.User{}, err
|
|
}
|
|
username, err := generateRemoteUserName(person)
|
|
if err != nil {
|
|
return &user_model.User{}, err
|
|
}
|
|
password, err := generateRandomPassword()
|
|
if err != nil {
|
|
return &user_model.User{}, err
|
|
}
|
|
user := &user_model.User{
|
|
LowerName: strings.ToLower(username),
|
|
Name: username,
|
|
Email: email,
|
|
EmailNotificationsPreference: "disabled",
|
|
Passwd: password,
|
|
MustChangePassword: false,
|
|
LoginName: remoteStargazer,
|
|
Type: user_model.UserTypeRemoteUser,
|
|
IsAdmin: false,
|
|
}
|
|
return user, nil
|
|
}
|
|
|
|
// TODO: move this to model.user somwhere ?
|
|
func saveFederatedUserRecord(ctx *context.APIContext, user *user_model.User) error {
|
|
overwriteDefault := &user_model.CreateUserOverwriteOptions{
|
|
IsActive: util.OptionalBoolFalse,
|
|
IsRestricted: util.OptionalBoolFalse,
|
|
}
|
|
if err := user_model.CreateUser(ctx, user, overwriteDefault); err != nil {
|
|
return err
|
|
}
|
|
log.Info("User created!")
|
|
return nil
|
|
}
|
|
|
|
// Repository function returns the Repository actor for a repo
|
|
func Repository(ctx *context.APIContext) {
|
|
// swagger:operation GET /activitypub/repository-id/{repository-id} activitypub activitypubRepository
|
|
// ---
|
|
// summary: Returns the Repository actor for a repo
|
|
// produces:
|
|
// - application/json
|
|
// parameters:
|
|
// - name: repository-id
|
|
// in: path
|
|
// description: repository ID of the repo
|
|
// type: integer
|
|
// required: true
|
|
// responses:
|
|
// "200":
|
|
// "$ref": "#/responses/ActivityPub"
|
|
|
|
link := fmt.Sprintf("%s/api/v1/activitypub/repository-id/%d", strings.TrimSuffix(setting.AppURL, "/"), ctx.Repo.Repository.ID)
|
|
repo := forgefed.RepositoryNew(ap.IRI(link))
|
|
|
|
repo.Name = ap.NaturalLanguageValuesNew()
|
|
err := repo.Name.Set("en", ap.Content(ctx.Repo.Repository.Name))
|
|
if err != nil {
|
|
ctx.ServerError("Set Name", err)
|
|
return
|
|
}
|
|
|
|
response(ctx, repo)
|
|
}
|
|
|
|
// PersonInbox function handles the incoming data for a repository inbox
|
|
func RepositoryInbox(ctx *context.APIContext) {
|
|
// swagger:operation POST /activitypub/repository-id/{repository-id}/inbox activitypub activitypubRepository
|
|
// ---
|
|
// summary: Send to the inbox
|
|
// produces:
|
|
// - application/json
|
|
// parameters:
|
|
// - name: repository-id
|
|
// in: path
|
|
// description: repository ID of the repo
|
|
// type: integer
|
|
// required: true
|
|
// - name: body
|
|
// in: body
|
|
// schema:
|
|
// "$ref": "#/definitions/Star"
|
|
// responses:
|
|
// "204":
|
|
// "$ref": "#/responses/empty"
|
|
|
|
var user *user_model.User
|
|
|
|
repository := ctx.Repo.Repository
|
|
log.Info("RepositoryInbox: repo: %v, owned by: %v", repository.Name, repository.OwnerName)
|
|
|
|
activity := web.GetForm(ctx).(*forgefed.Star)
|
|
log.Info("RepositoryInbox: Activity.Source: %v, Activity.Actor %v, Activity.Actor.Id %v", activity.Source, activity.Actor, activity.Actor.GetID().String())
|
|
|
|
// parse actorId (person)
|
|
actorId, err := forgefed.NewPersonId(activity.Actor.GetID().String(), string(activity.Source))
|
|
if err != nil {
|
|
ctx.ServerError("Validate actorId", err)
|
|
return
|
|
}
|
|
log.Info("RepositoryInbox: actorId parsed: %v", actorId)
|
|
// parse objectId (repository)
|
|
objectId, err := forgefed.NewRepositoryId(activity.Object.GetID().String(), string(activity.Source))
|
|
if err != nil {
|
|
ctx.ServerError("Validate objectId", err)
|
|
return
|
|
}
|
|
if objectId.Id != fmt.Sprint(repository.ID) {
|
|
ctx.ServerError("Validate objectId", err)
|
|
return
|
|
}
|
|
log.Info("RepositoryInbox: objectId parsed: %v", objectId)
|
|
|
|
adctorAsWebfinger := actorId.AsWebfinger() // used as LoginName in newly created user
|
|
log.Info("remotStargazer: %v", adctorAsWebfinger)
|
|
|
|
// Check if user already exists
|
|
users, err := SearchUsersByLoginName(adctorAsWebfinger)
|
|
if err != nil {
|
|
panic(fmt.Errorf("searching for user failed: %v", err))
|
|
}
|
|
|
|
switch len(users) {
|
|
case 0:
|
|
{
|
|
body, err := getBody(adctorAsWebfinger, "does not exist yet", ctx) // ToDo: We would need to insert the repo or its owners key here
|
|
if err != nil {
|
|
panic(fmt.Errorf("http get failed: %v", err))
|
|
}
|
|
person, err := unmarshallPersonJSON(body)
|
|
if err != nil {
|
|
panic(fmt.Errorf("getting user failed: %v", err))
|
|
}
|
|
user, err = createFederatedUserFromPerson(person, adctorAsWebfinger)
|
|
if err != nil {
|
|
panic(fmt.Errorf("create federated user: %w", err))
|
|
}
|
|
err = saveFederatedUserRecord(ctx, user)
|
|
if err != nil {
|
|
panic(fmt.Errorf("save user: %w", err))
|
|
}
|
|
}
|
|
case 1:
|
|
{
|
|
user = users[0]
|
|
log.Info("Found user full name was: %v", user.FullName)
|
|
log.Info("Found user name was: %v", user.Name)
|
|
log.Info("Found user loginname was: %v", user.LoginName)
|
|
log.Info("%v", user)
|
|
}
|
|
default:
|
|
{
|
|
panic(fmt.Errorf("found more than one matches for federated users"))
|
|
}
|
|
}
|
|
|
|
// TODO: why should we search user for a second time from db?
|
|
remoteUser, err := user_model.GetUserByEmail(ctx, user.Email)
|
|
if err != nil {
|
|
ctx.Error(http.StatusInternalServerError, "StarRepo", err)
|
|
return
|
|
}
|
|
|
|
// check if already starred by this user
|
|
alreadyStared := repo_model.IsStaring(ctx, remoteUser.ID, repository.ID)
|
|
switch alreadyStared {
|
|
case true: // execute unstar action
|
|
{
|
|
err = repo_model.StarRepo(ctx, remoteUser.ID, repository.ID, false)
|
|
if err != nil {
|
|
ctx.Error(http.StatusInternalServerError, "StarRepo", err)
|
|
return
|
|
}
|
|
}
|
|
case false: // execute star action
|
|
{
|
|
err = repo_model.StarRepo(ctx, remoteUser.ID, repository.ID, true)
|
|
if err != nil {
|
|
ctx.Error(http.StatusInternalServerError, "StarRepo", err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// wait 5 sec.
|
|
time.Sleep(5 * time.Second)
|
|
|
|
ctx.Status(http.StatusNoContent)
|
|
}
|