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forgejo/models/activitypub/actor.go
2024-02-10 15:09:34 +01:00

121 lines
2.5 KiB
Go

package activitypub
import (
"fmt"
"net/url"
"strconv"
"strings"
"code.gitea.io/gitea/modules/forgefed"
)
type Validatable interface { // ToDo: What is the right package for this interface?
validate_is_not_nil() error
validate_is_not_empty() error
Validate() error
IsValid() (bool, error)
PanicIfInvalid()
}
type ActorID struct {
userId string
source forgefed.SourceType
schema string
path string
host string
port string // optional
}
// ToDo: validate_is_not_empty maybe not as an extra method
func (a ActorID) validate_is_not_empty(str string, field string) error {
if str == "" {
return fmt.Errorf("field %v was empty", field)
}
return nil
}
/*
Validate collects error strings, concatenates and returns them
*/
func (a ActorID) Validate() []string {
err := make([]string, 0, 3) // ToDo: Solve this dynamically
if res := a.validate_is_not_empty(a.schema, "schema"); res != nil {
err = append(err, res.Error())
}
if res := a.validate_is_not_empty(a.host, "host"); res != nil {
err = append(err, res.Error())
}
switch a.source {
case "forgejo", "gitea":
if !strings.Contains(a.path, "api/v1/activitypub/user-id") {
err = append(err, fmt.Errorf("the Path to the API was invalid: %v", a.path).Error())
}
default:
err = append(err, fmt.Errorf("currently only forgeo and gitea sources are allowed from actor id").Error())
}
return err
}
func (a ActorID) IsValid() (bool, error) {
if err := a.Validate(); len(err) > 0 {
errString := strings.Join(err, "\n")
return false, fmt.Errorf(errString)
}
return true, nil
}
func (a ActorID) PanicIfInvalid() {
if valid, err := a.IsValid(); !valid {
panic(err)
}
}
func (a ActorID) GetUserId() int {
result, err := strconv.Atoi(a.userId)
if err != nil {
panic(err)
}
return result
}
// Returns the combination of host:port if port exists, host otherwise
func (a ActorID) GetHostAndPort() string {
if a.port != "" {
return strings.Join([]string{a.host, a.port}, ":")
}
return a.host
}
func ParseActorFromStarActivity(star *forgefed.Star) (ActorID, error) {
u, err := url.Parse(star.Actor.GetID().String())
// check if userID IRI is well formed url
if err != nil {
return ActorID{}, fmt.Errorf("the actor ID was not a valid IRI: %v", err)
}
pathWithUserID := strings.Split(u.Path, "/")
userId := pathWithUserID[len(pathWithUserID)-1]
return ActorID{ // ToDo: maybe keep original input to validate against (maybe extra method)
userId: userId,
source: star.Source,
schema: u.Scheme,
host: u.Host,
path: u.Path,
port: u.Port(),
}, nil
}