mirror of
https://codeberg.org/forgejo/forgejo.git
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132 lines
3.4 KiB
Go
132 lines
3.4 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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"net/url"
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"strings"
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"code.gitea.io/gitea/modules/validation"
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)
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type PersonId struct {
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userId string
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source string
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schema string
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path string
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host string
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port string
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unvalidatedInput string
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}
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func NewPersonId(uri string, source string) (PersonId, error) {
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if !validation.IsValidExternalURL(uri) {
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return PersonId{}, fmt.Errorf("uri %s is not a valid external url", uri)
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}
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validatedUri, _ := url.Parse(uri)
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pathWithUserID := strings.Split(validatedUri.Path, "/")
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if containsEmptyString(pathWithUserID) {
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pathWithUserID = removeEmptyStrings(pathWithUserID)
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}
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length := len(pathWithUserID)
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pathWithoutUserID := strings.Join(pathWithUserID[0:length-1], "/")
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userId := pathWithUserID[length-1]
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actorId := PersonId{
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userId: userId,
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source: source,
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schema: validatedUri.Scheme,
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host: validatedUri.Hostname(),
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path: pathWithoutUserID,
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port: validatedUri.Port(),
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unvalidatedInput: uri,
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}
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if valid, err := actorId.IsValid(); !valid {
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return PersonId{}, err
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}
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return actorId, nil
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}
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func (id PersonId) AsUri() string {
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result := ""
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if id.port == "" {
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result = fmt.Sprintf("%s://%s/%s/%s", id.schema, id.host, id.path, id.userId)
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} else {
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result = fmt.Sprintf("%s://%s:%s/%s/%s", id.schema, id.host, id.port, id.path, id.userId)
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}
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return result
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}
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func (id PersonId) AsWebfinger() string {
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result := fmt.Sprintf("@%s@%s", strings.ToLower(id.userId), strings.ToLower(id.host))
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return result
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}
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/*
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Validate collects error strings in a slice and returns this
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*/
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func (value PersonId) Validate() []string {
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var result = []string{}
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result = append(result, validation.ValidateNotEmpty(value.userId, "userId")...)
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result = append(result, validation.ValidateNotEmpty(value.source, "source")...)
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result = append(result, validation.ValidateNotEmpty(value.schema, "schema")...)
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result = append(result, validation.ValidateNotEmpty(value.path, "path")...)
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result = append(result, validation.ValidateNotEmpty(value.host, "host")...)
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result = append(result, validation.ValidateNotEmpty(value.unvalidatedInput, "unvalidatedInput")...)
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result = append(result, validation.ValidateOneOf(value.source, []string{"forgejo", "gitea"})...)
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switch value.source {
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case "forgejo", "gitea":
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if strings.ToLower(value.path) != "api/v1/activitypub/user-id" {
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result = append(result, fmt.Sprintf("path has to be a api path"))
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}
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}
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if value.unvalidatedInput != value.AsUri() {
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result = append(result, fmt.Sprintf("not all input: %q was parsed: %q", value.unvalidatedInput, value.AsUri()))
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}
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return result
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}
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/*
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IsValid concatenates the error messages with newlines and returns them if there are any
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*/
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func (a PersonId) IsValid() (bool, error) {
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if err := a.Validate(); len(err) > 0 {
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errString := strings.Join(err, "\n")
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return false, fmt.Errorf(errString)
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}
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return true, nil
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}
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func (a PersonId) PanicIfInvalid() {
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if valid, err := a.IsValid(); !valid {
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panic(err)
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}
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}
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func containsEmptyString(ar []string) bool {
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for _, elem := range ar {
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if elem == "" {
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return true
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}
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}
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return false
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}
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func removeEmptyStrings(ls []string) []string {
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var rs []string
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for _, str := range ls {
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if str != "" {
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rs = append(rs, str)
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}
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}
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return rs
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}
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