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forgejo/routers/api/v1/activitypub/repository.go

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// Copyright 2023 The forgejo Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
package activitypub
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// ToDo: Fix linting
// ToDo: Maybe do a request for the node info
// Then maybe save the node info in a DB table - this could be useful for validation
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import (
"fmt"
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"io"
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"net/http"
"strings"
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"time"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/models/forgefed"
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repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
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api "code.gitea.io/gitea/modules/activitypub"
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"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/log"
"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"
ap "github.com/go-ap/activitypub"
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pwd_gen "github.com/sethvargo/go-password/password"
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)
// 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":
// "$ref": "#/responses/ActivityPub"
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link := fmt.Sprintf("%s/api/v1/activitypub/repository-id/%d", strings.TrimSuffix(setting.AppURL, "/"), ctx.Repo.Repository.ID)
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repo := forgefed.RepositoryNew(ap.IRI(link))
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repo.Name = ap.NaturalLanguageValuesNew()
err := repo.Name.Set("en", ap.Content(ctx.Repo.Repository.Name))
if err != nil {
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ctx.ServerError("Set Name", err)
return
}
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response(ctx, repo)
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}
// PersonInbox function handles the incoming data for a repository inbox
func RepositoryInbox(ctx *context.APIContext) {
// swagger:operation POST /activitypub/repository-id/{repository-id}/inbox activitypub activitypubRepository
// ---
// summary: Send to the inbox
// produces:
// - application/json
// parameters:
// - name: repository-id
// in: path
// description: repository ID of the repo
// type: integer
// required: true
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// - name: body
// in: body
// schema:
// "$ref": "#/definitions/Star"
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// responses:
// "204":
// "$ref": "#/responses/empty"
var user *user_model.User
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repository := ctx.Repo.Repository
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log.Info("RepositoryInbox: repo: %v", repository)
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activity := web.GetForm(ctx).(*forgefed.Star)
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log.Info("RepositoryInbox: activity:%v", activity)
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// parse actorId (person)
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actorId, err := forgefed.NewPersonId(activity.Actor.GetID().String(), string(activity.Source))
if err != nil {
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ctx.ServerError("Validate actorId", err)
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return
}
log.Info("RepositoryInbox: actorId validated: %v", actorId)
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// parse objectId (repository)
objectId, err := forgefed.NewRepositoryId(activity.Object.GetID().String(), string(activity.Source))
if err != nil {
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ctx.ServerError("Validate objectId", err)
return
}
if objectId.Id != fmt.Sprint(repository.ID) {
ctx.ServerError("Validate objectId", err)
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return
}
log.Info("RepositoryInbox: objectId validated: %v", objectId)
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actorAsLoginId := actorId.AsLoginName() // used as LoginName in newly created user
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log.Info("RepositoryInbox: remoteStargazer: %v", actorAsLoginId)
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// Check if user already exists
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users, err := SearchUsersByLoginName(actorAsLoginId)
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if err != nil {
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ctx.ServerError("Searching for user failed", err)
return
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}
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log.Info("RepositoryInbox: local found users: %v", len(users))
switch len(users) {
case 0:
{
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user, err = createUserFromAP(ctx, actorId)
if err != nil {
ctx.ServerError("Creating user failed", err)
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return
}
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log.Info("RepositoryInbox: created user from ap: %v", user)
}
case 1:
{
user = users[0]
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log.Info("RepositoryInbox: found user: %v", user)
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}
default:
{
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ctx.Error(http.StatusInternalServerError, "StarRepo",
fmt.Errorf("found more than one matches for federated users"))
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return
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}
}
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// execute the activity if the repo was not stared already
alreadyStared := repo_model.IsStaring(ctx, user.ID, repository.ID)
if !alreadyStared {
err = repo_model.StarRepo(ctx, user.ID, repository.ID, true)
if err != nil {
ctx.Error(http.StatusInternalServerError, "StarRepo", err)
return
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}
}
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// wait 5 sec.
time.Sleep(5 * time.Second)
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ctx.Status(http.StatusNoContent)
}
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// TODO: Move this to model.user.search ? or to model.user.externalLoginUser ?
func SearchUsersByLoginName(loginName string) ([]*user_model.User, error) {
var actionsUser = user_model.NewActionsUser()
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)
}
return users, nil
}
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// ToDo: Maybe use externalLoginUser
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func createUserFromAP(ctx *context.APIContext, personId forgefed.PersonId) (*user_model.User, error) {
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// ToDo: Do we get a publicKeyId from server, repo or owner or repo?
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var actionsUser = user_model.NewActionsUser()
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client, err := api.NewClient(ctx, actionsUser, "no idea where to get key material.")
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if err != nil {
return &user_model.User{}, err
}
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response, err := client.Get(personId.AsUri())
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if err != nil {
return &user_model.User{}, err
}
// validate response; ToDo: Should we widen the restrictions here?
if response.StatusCode != 200 {
err = fmt.Errorf("got non 200 status code for id: %v", personId.Id)
return &user_model.User{}, err
}
log.Info("RepositoryInbox: got status: %v", response.Status)
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defer response.Body.Close()
body, err := io.ReadAll(response.Body)
if err != nil {
return &user_model.User{}, err
}
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log.Info("RepositoryInbox: got body: %v", string(body))
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person := ap.Person{}
if strings.Contains(string(body), "user does not exist") {
err = fmt.Errorf("the requested user id did not exist on the remote server: %v", personId.Id)
} else {
err = person.UnmarshalJSON(body)
}
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if err != nil {
return &user_model.User{}, err
}
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log.Info("RepositoryInbox: got person by ap: %v", person)
email := fmt.Sprintf("%v@%v", uuid.New().String(), personId.Host)
loginName := personId.AsLoginName()
name := fmt.Sprintf("%v%v", person.PreferredUsername.String(), personId.HostSuffix())
log.Info("RepositoryInbox: person.Name: %v", person.Name)
fullName := person.Name.String()
if len(person.Name) == 0 {
fullName = name
}
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password, err := pwd_gen.Generate(32, 10, 10, false, true)
if err != nil {
return &user_model.User{}, err
}
user := &user_model.User{
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LowerName: strings.ToLower(person.PreferredUsername.String()),
Name: name,
FullName: fullName,
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Email: email,
EmailNotificationsPreference: "disabled",
Passwd: password,
MustChangePassword: false,
LoginName: loginName,
Type: user_model.UserTypeRemoteUser,
IsAdmin: false,
}
overwrite := &user_model.CreateUserOverwriteOptions{
IsActive: util.OptionalBoolFalse,
IsRestricted: util.OptionalBoolFalse,
}
if err := user_model.CreateUser(ctx, user, overwrite); err != nil {
return &user_model.User{}, err
}
return user, nil
}