mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-23 08:47:42 -05:00
302 lines
8.9 KiB
Go
302 lines
8.9 KiB
Go
// Copyright 2023 The forgejo Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package activitypub
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import (
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strings"
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"code.gitea.io/gitea/models/activitypub"
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"code.gitea.io/gitea/models/db"
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api "code.gitea.io/gitea/modules/activitypub"
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"code.gitea.io/gitea/modules/context"
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"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/setting"
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"code.gitea.io/gitea/modules/util"
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"code.gitea.io/gitea/modules/web"
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"github.com/google/uuid"
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user_model "code.gitea.io/gitea/models/user"
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ap "github.com/go-ap/activitypub"
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pwd_gen "github.com/sethvargo/go-password/password"
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//f3 "lab.forgefriends.org/friendlyforgeformat/gof3"
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)
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var actionsUser = user_model.NewActionsUser()
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func generateUUIDMail(person ap.Actor) (string, error) {
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// UUID@remote.host
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id := uuid.New().String()
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//url, err := url.Parse(person.URL.GetID().String())
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//host := url.Host
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return strings.Join([]string{id, "example.com"}, "@"), nil
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}
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func generateRemoteUserName(person ap.Actor) (string, error) {
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u, err := url.Parse(person.URL.GetID().String())
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if err != nil {
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return "", err
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}
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host := strings.Split(u.Host, ":")[0] // no port in username
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if name := person.PreferredUsername.String(); name != "" {
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return strings.Join([]string{name, host}, "_"), nil
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}
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if name := person.Name.String(); name != "" {
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return strings.Join([]string{name, host}, "_"), nil
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}
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return "", fmt.Errorf("empty name, preferredUsername field")
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}
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func generateRandomPassword() (string, error) {
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// Generate a password that is 64 characters long with 10 digits, 10 symbols,
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// allowing upper and lower case letters, disallowing repeat characters.
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res, err := pwd_gen.Generate(32, 10, 10, false, false)
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if err != nil {
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return "", err
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}
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return res, err
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}
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func searchUsersByPerson(actorId string) ([]*user_model.User, error) {
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actionsUser.IsAdmin = true
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options := &user_model.SearchUserOptions{
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LoginName: actorId,
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Actor: actionsUser,
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Type: user_model.UserTypeRemoteUser,
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OrderBy: db.SearchOrderByAlphabetically,
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ListOptions: db.ListOptions{PageSize: 1},
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IsActive: util.OptionalBoolFalse,
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IncludeReserved: true,
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}
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users, _, err := user_model.SearchUsers(db.DefaultContext, options)
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if err != nil {
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return []*user_model.User{}, fmt.Errorf("search failed: %v", err)
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}
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log.Info("local found users: %v", len(users))
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return users, nil
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}
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func getPersonByRest(remoteStargazer, starReceiver string, ctx *context.APIContext) (ap.Person, error) {
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client, err := api.NewClient(ctx, actionsUser, starReceiver) // The star receiver signs the http get request
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if err != nil {
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return ap.Person{}, err
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}
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// get_person_by_rest
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bytes := []byte{0} // no body needed for getting user actor
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response, err := client.Get(bytes, remoteStargazer)
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if err != nil {
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return ap.Person{}, err
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}
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defer response.Body.Close()
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body, err := io.ReadAll(response.Body)
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if err != nil {
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return ap.Person{}, err
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}
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// parse response
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person := ap.Person{}
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err = person.UnmarshalJSON(body)
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if err != nil {
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return ap.Person{}, err
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}
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log.Info("remoteStargazer: %v", remoteStargazer)
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log.Info("http client. %v", client)
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log.Info("response: %v\n error: ", response, err)
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log.Info("Person is: %v", person)
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log.Info("Person Name is: %v", person.PreferredUsername)
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log.Info("Person URL is: %v", person.URL)
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return person, nil
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}
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func createFederatedUserFromPerson(ctx *context.APIContext, person ap.Person, remoteStargazer string) error {
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email, err := generateUUIDMail(person)
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if err != nil {
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return err
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}
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username, err := generateRemoteUserName(person)
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if err != nil {
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return err
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}
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password, err := generateRandomPassword()
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if err != nil {
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return err
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}
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user := &user_model.User{
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LowerName: strings.ToLower(username),
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Name: username,
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Email: email,
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EmailNotificationsPreference: "disabled",
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Passwd: password,
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MustChangePassword: false,
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LoginName: remoteStargazer,
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Type: user_model.UserTypeRemoteUser,
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IsAdmin: false,
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}
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overwriteDefault := &user_model.CreateUserOverwriteOptions{
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IsActive: util.OptionalBoolFalse,
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IsRestricted: util.OptionalBoolFalse,
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}
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if err := user_model.CreateUser(ctx, user, overwriteDefault); err != nil {
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return err
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}
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log.Info("User created!")
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return nil
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}
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// Repository function returns the Repository actor for a repo
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func Repository(ctx *context.APIContext) {
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// swagger:operation GET /activitypub/repository-id/{repository-id} activitypub activitypubRepository
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// ---
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// summary: Returns the Repository actor for a repo
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// produces:
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// - application/json
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// parameters:
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// - name: repository-id
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// in: path
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// description: repository ID of the repo
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// type: integer
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// required: true
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// responses:
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// "200":
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// "$ref": "#/responses/ActivityPub"
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link := fmt.Sprintf("%s/api/v1/activitypub/repository-id/%d", strings.TrimSuffix(setting.AppURL, "/"), ctx.Repo.Repository.ID)
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repo := forgefed.RepositoryNew(ap.IRI(link))
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repo.Name = ap.NaturalLanguageValuesNew()
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err := repo.Name.Set("en", ap.Content(ctx.Repo.Repository.Name))
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if err != nil {
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ctx.ServerError("Set Name", err)
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return
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}
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response(ctx, repo)
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}
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// PersonInbox function handles the incoming data for a repository inbox
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func RepositoryInbox(ctx *context.APIContext) {
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// swagger:operation POST /activitypub/repository-id/{repository-id}/inbox activitypub activitypubRepository
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// ---
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// summary: Send to the inbox
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// produces:
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// - application/json
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// parameters:
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// - name: repository-id
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// in: path
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// description: repository ID of the repo
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// type: integer
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// required: true
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// - name: body
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// in: body
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// schema:
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// "$ref": "#/definitions/Star"
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// responses:
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// "204":
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// "$ref": "#/responses/empty"
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log.Info("RepositoryInbox: repo %v, %v", ctx.Repo.Repository.OwnerName, ctx.Repo.Repository.Name)
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activity := web.GetForm(ctx).(*forgefed.Star)
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log.Info("RepositoryInbox: Activity.Source %v", activity.Source)
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log.Info("RepositoryInbox: Activity.Actor %v", activity.Actor)
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// assume actor is: "actor": "https://codeberg.org/api/v1/activitypub/user-id/12345" - NB: This might be actually the ID? Maybe check vocabulary.
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// "https://Codeberg.org/api/v1/activitypub/user-id/12345"
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// "https://codeberg.org:443/api/v1/activitypub/user-id/12345"
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// "https://codeberg.org/api/v1/activitypub/../activitypub/user-id/12345"
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// "https://user:password@codeberg.org/api/v1/activitypub/user-id/12345"
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// "https://codeberg.org/api/v1/activitypub//user-id/12345"
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// parse senderActorId
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// senderActorId holds the data to construct the sender of the star
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log.Info("activity.Actor.GetID().String(): %v", activity.Actor.GetID().String())
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senderActorId, err := activitypub.ParseActorID(activity.Actor.GetID().String(), string(activity.Source))
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if err != nil {
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panic(err)
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}
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receivedRepoId, err := activitypub.ParseActorID(activity.Activity.Object.GetID().String(), string(activity.Source))
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if err != nil {
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panic(err)
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}
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// validate receiverActorId against context repo
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repositoryID := ctx.Repo.Repository.ID
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if repositoryID != int64(receivedRepoId.GetUserId()) {
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panic(
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fmt.Errorf("received repo id and repo id were not identical:\nreceived id: %v\nrepo id:%v", receivedRepoId, repositoryID))
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}
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// Is the ActorID Struct valid?
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senderActorId.PanicIfInvalid()
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receivedRepoId.PanicIfInvalid()
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log.Info("RepositoryInbox: Actor parsed. %v", senderActorId)
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log.Info("RepositoryInbox: Actor parsed. %v", receivedRepoId)
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remoteStargazer := senderActorId.GetNormalizedUri() // used as LoginName in newly created user
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starReceiver := receivedRepoId.GetNormalizedUri()
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log.Info("remotStargazer: %v", remoteStargazer)
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log.Info("starReceiver: %v", starReceiver)
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// Check if user already exists
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// TODO: If we where able to search for federated id there would be no need to get the remote person.
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// N.B. We need the username as a display name from the remote host. This requires us to make another request
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// We might extend the Star Activity by the username, then this request would become redundant
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users, err := searchUsersByPerson(remoteStargazer)
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if err != nil {
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panic(fmt.Errorf("searching for user failed: %v", err))
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}
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if len(users) == 0 {
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// ToDo: We need a remote server with federation enabled to properly test this
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person, err := getPersonByRest(remoteStargazer, starReceiver, ctx)
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if err != nil {
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panic(fmt.Errorf("getting user failed: %v", err))
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}
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// create user
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err = createFederatedUserFromPerson(ctx, person, remoteStargazer)
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if err != nil {
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panic(fmt.Errorf("createUser: %w", err))
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}
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} else {
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// use first user
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user := users[0]
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log.Info("%v", user)
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}
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// TODO: handle case of count > 1
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// execute star action
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// wait 15 sec.
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ctx.Status(http.StatusNoContent)
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}
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