85 lines
2 KiB
Go
85 lines
2 KiB
Go
|
package wellknown
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"net/http"
|
||
|
|
"net/url"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"git.sleepycat.moe/sam/mercury/internal/database/sql"
|
||
|
|
"git.sleepycat.moe/sam/mercury/web/api"
|
||
|
|
"github.com/rs/zerolog/log"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (app *App) WebFinger(w http.ResponseWriter, r *http.Request) (any, error) {
|
||
|
|
ctx := r.Context()
|
||
|
|
validDomains := app.AppConfig.Web.WebFingerDomains()
|
||
|
|
|
||
|
|
resource, err := url.QueryUnescape(r.FormValue("resource"))
|
||
|
|
if err != nil {
|
||
|
|
return nil, api.Error{Code: api.ErrBadRequest}
|
||
|
|
}
|
||
|
|
|
||
|
|
if !strings.HasPrefix(resource, "acct:") {
|
||
|
|
return nil, api.Error{Code: api.ErrBadRequest, Details: "WebFinger only supports `acct:` queries"}
|
||
|
|
}
|
||
|
|
resource = strings.TrimPrefix(resource, "acct:")
|
||
|
|
username, domain, ok := strings.Cut(resource, "@")
|
||
|
|
if !ok {
|
||
|
|
return nil, api.Error{Code: api.ErrBadRequest}
|
||
|
|
}
|
||
|
|
if !anyMatches(validDomains, domain) {
|
||
|
|
return nil, api.Error{Code: api.ErrBadRequest, Details: "Not a local user on this instance"}
|
||
|
|
}
|
||
|
|
|
||
|
|
blog, err := app.Blog().ByName(ctx, username, "")
|
||
|
|
if err != nil {
|
||
|
|
if err == sql.ErrNotFound {
|
||
|
|
return nil, api.Error{Code: api.ErrNotFound}
|
||
|
|
}
|
||
|
|
|
||
|
|
log.Err(err).Str("username", username).Msg("looking up user for webfinger request")
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
webFingerHref := fmt.Sprintf("%s/@%s", app.AppConfig.Web.Domain, blog.Name)
|
||
|
|
|
||
|
|
return WebFinger{
|
||
|
|
Subject: fmt.Sprintf("acct:%s@%s", blog.Name, validDomains[0]),
|
||
|
|
Aliases: []string{webFingerHref},
|
||
|
|
Links: []WebFingerLink{
|
||
|
|
{
|
||
|
|
Rel: "http://webfinger.net/rel/profile-page",
|
||
|
|
Type: "text/html",
|
||
|
|
Href: webFingerHref,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Rel: "self",
|
||
|
|
Type: "application/activity+json",
|
||
|
|
Href: webFingerHref,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
type WebFinger struct {
|
||
|
|
Subject string `json:"subject"`
|
||
|
|
Aliases []string `json:"aliases"`
|
||
|
|
Links []WebFingerLink `json:"links"`
|
||
|
|
}
|
||
|
|
|
||
|
|
type WebFingerLink struct {
|
||
|
|
Rel string `json:"rel"`
|
||
|
|
Type string `json:"type"`
|
||
|
|
Href string `json:"href"`
|
||
|
|
}
|
||
|
|
|
||
|
|
func anyMatches[T comparable](slice []T, t T) bool {
|
||
|
|
for _, entry := range slice {
|
||
|
|
if entry == t {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
}
|