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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package util
import (
"fmt"
"net/url"
"strings"
)
const (
// UsersPath is for serving users info
UsersPath = "users"
// ActorsPath is for serving actors info
ActorsPath = "actors"
// StatusesPath is for serving statuses
StatusesPath = "statuses"
// InboxPath represents the webfinger inbox location
InboxPath = "inbox"
// OutboxPath represents the webfinger outbox location
OutboxPath = "outbox"
// FollowersPath represents the webfinger followers location
FollowersPath = "followers"
// FollowingPath represents the webfinger following location
FollowingPath = "following"
// LikedPath represents the webfinger liked location
LikedPath = "liked"
// CollectionsPath represents the webfinger collections location
CollectionsPath = "collections"
// FeaturedPath represents the webfinger featured location
FeaturedPath = "featured"
// PublicKeyPath is for serving an account's public key
PublicKeyPath = "publickey"
)
// APContextKey is a type used specifically for settings values on contexts within go-fed AP request chains
type APContextKey string
const (
// APActivity can be used to set and retrieve the actual go-fed pub.Activity within a context.
APActivity APContextKey = "activity"
// APAccount can be used the set and retrieve the account being interacted with
APAccount APContextKey = "account"
// APRequestingAccount can be used to set and retrieve the account of an incoming federation request.
APRequestingAccount APContextKey = "requestingAccount"
// APRequestingPublicKeyID can be used to set and retrieve the public key ID of an incoming federation request.
APRequestingPublicKeyID APContextKey = "requestingPublicKeyID"
)
type ginContextKey struct{}
// GinContextKey is used solely for setting and retrieving the gin context from a context.Context
var GinContextKey = &ginContextKey{}
// UserURIs contains a bunch of UserURIs and URLs for a user, host, account, etc.
type UserURIs struct {
// The web URL of the instance host, eg https://example.org
HostURL string
// The web URL of the user, eg., https://example.org/@example_user
UserURL string
// The web URL for statuses of this user, eg., https://example.org/@example_user/statuses
StatusesURL string
// The webfinger URI of this user, eg., https://example.org/users/example_user
UserURI string
// The webfinger URI for this user's statuses, eg., https://example.org/users/example_user/statuses
StatusesURI string
// The webfinger URI for this user's activitypub inbox, eg., https://example.org/users/example_user/inbox
InboxURI string
// The webfinger URI for this user's activitypub outbox, eg., https://example.org/users/example_user/outbox
OutboxURI string
// The webfinger URI for this user's followers, eg., https://example.org/users/example_user/followers
FollowersURI string
// The webfinger URI for this user's following, eg., https://example.org/users/example_user/following
FollowingURI string
// The webfinger URI for this user's liked posts eg., https://example.org/users/example_user/liked
LikedURI string
// The webfinger URI for this user's featured collections, eg., https://example.org/users/example_user/collections/featured
CollectionURI string
// The URI for this user's public key, eg., https://example.org/users/example_user/publickey
PublicKeyURI string
}
// GenerateURIsForAccount throws together a bunch of URIs for the given username, with the given protocol and host.
func GenerateURIsForAccount(username string, protocol string, host string) *UserURIs {
// The below URLs are used for serving web requests
hostURL := fmt.Sprintf("%s://%s", protocol, host)
userURL := fmt.Sprintf("%s/@%s", hostURL, username)
statusesURL := fmt.Sprintf("%s/%s", userURL, StatusesPath)
// the below URIs are used in ActivityPub and Webfinger
userURI := fmt.Sprintf("%s/%s/%s", hostURL, UsersPath, username)
statusesURI := fmt.Sprintf("%s/%s", userURI, StatusesPath)
inboxURI := fmt.Sprintf("%s/%s", userURI, InboxPath)
outboxURI := fmt.Sprintf("%s/%s", userURI, OutboxPath)
followersURI := fmt.Sprintf("%s/%s", userURI, FollowersPath)
followingURI := fmt.Sprintf("%s/%s", userURI, FollowingPath)
likedURI := fmt.Sprintf("%s/%s", userURI, LikedPath)
collectionURI := fmt.Sprintf("%s/%s/%s", userURI, CollectionsPath, FeaturedPath)
publicKeyURI := fmt.Sprintf("%s/%s", userURI, PublicKeyPath)
return &UserURIs{
HostURL: hostURL,
UserURL: userURL,
StatusesURL: statusesURL,
UserURI: userURI,
StatusesURI: statusesURI,
InboxURI: inboxURI,
OutboxURI: outboxURI,
FollowersURI: followersURI,
FollowingURI: followingURI,
LikedURI: likedURI,
CollectionURI: collectionURI,
PublicKeyURI: publicKeyURI,
}
}
// IsUserPath returns true if the given URL path corresponds to eg /users/example_username
func IsUserPath(id *url.URL) bool {
return userPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsInboxPath returns true if the given URL path corresponds to eg /users/example_username/inbox
func IsInboxPath(id *url.URL) bool {
return inboxPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsOutboxPath returns true if the given URL path corresponds to eg /users/example_username/outbox
func IsOutboxPath(id *url.URL) bool {
return outboxPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsInstanceActorPath returns true if the given URL path corresponds to eg /actors/example_username
func IsInstanceActorPath(id *url.URL) bool {
return actorPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsFollowersPath returns true if the given URL path corresponds to eg /users/example_username/followers
func IsFollowersPath(id *url.URL) bool {
return followersPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsFollowingPath returns true if the given URL path corresponds to eg /users/example_username/following
func IsFollowingPath(id *url.URL) bool {
return followingPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsLikedPath returns true if the given URL path corresponds to eg /users/example_username/liked
func IsLikedPath(id *url.URL) bool {
return likedPathRegex.MatchString(strings.ToLower(id.Path))
}
// IsStatusesPath returns true if the given URL path corresponds to eg /users/example_username/statuses/SOME_UUID_OF_A_STATUS
func IsStatusesPath(id *url.URL) bool {
return statusesPathRegex.MatchString(strings.ToLower(id.Path))
}
// ParseStatusesPath returns the username and uuid from a path such as /users/example_username/statuses/SOME_UUID_OF_A_STATUS
func ParseStatusesPath(id *url.URL) (username string, uuid string, err error) {
matches := statusesPathRegex.FindStringSubmatch(id.Path)
if len(matches) != 3 {
err = fmt.Errorf("expected 3 matches but matches length was %d", len(matches))
return
}
username = matches[1]
uuid = matches[2]
return
}
// ParseUserPath returns the username from a path such as /users/example_username
func ParseUserPath(id *url.URL) (username string, err error) {
matches := userPathRegex.FindStringSubmatch(id.Path)
if len(matches) != 2 {
err = fmt.Errorf("expected 2 matches but matches length was %d", len(matches))
return
}
username = matches[1]
return
}
// ParseInboxPath returns the username from a path such as /users/example_username/inbox
func ParseInboxPath(id *url.URL) (username string, err error) {
matches := inboxPathRegex.FindStringSubmatch(id.Path)
if len(matches) != 2 {
err = fmt.Errorf("expected 2 matches but matches length was %d", len(matches))
return
}
username = matches[1]
return
}
// ParseOutboxPath returns the username from a path such as /users/example_username/outbox
func ParseOutboxPath(id *url.URL) (username string, err error) {
matches := outboxPathRegex.FindStringSubmatch(id.Path)
if len(matches) != 2 {
err = fmt.Errorf("expected 2 matches but matches length was %d", len(matches))
return
}
username = matches[1]
return
}
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