73 lines
1.8 KiB
Go
73 lines
1.8 KiB
Go
package public
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import (
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"context"
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"errors"
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"net/http"
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"net/url"
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"path"
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"strconv"
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"github.com/lestrrat-go/jwx/v2/jwt"
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"github.com/navidrome/navidrome/consts"
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"github.com/navidrome/navidrome/core/auth"
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"github.com/navidrome/navidrome/model"
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"github.com/navidrome/navidrome/server"
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. "github.com/navidrome/navidrome/utils/gg"
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)
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func ImageURL(r *http.Request, artID model.ArtworkID, size int) string {
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link := encodeArtworkID(artID)
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uri := path.Join(consts.URLPathPublicImages, link)
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params := url.Values{}
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if size > 0 {
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params.Add("size", strconv.Itoa(size))
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}
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return server.AbsoluteURL(r, uri, params)
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}
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func encodeArtworkID(artID model.ArtworkID) string {
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token, _ := auth.CreatePublicToken(map[string]any{"id": artID.String()})
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return token
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}
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func decodeArtworkID(tokenString string) (model.ArtworkID, error) {
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token, err := auth.TokenAuth.Decode(tokenString)
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if err != nil {
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return model.ArtworkID{}, err
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}
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if token == nil {
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return model.ArtworkID{}, errors.New("unauthorized")
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}
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err = jwt.Validate(token, jwt.WithRequiredClaim("id"))
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if err != nil {
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return model.ArtworkID{}, err
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}
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claims, err := token.AsMap(context.Background())
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if err != nil {
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return model.ArtworkID{}, err
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}
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id, ok := claims["id"].(string)
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if !ok {
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return model.ArtworkID{}, errors.New("invalid id type")
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}
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artID, err := model.ParseArtworkID(id)
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if err == nil {
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return artID, nil
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}
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// Try to default to mediafile artworkId (if used with a mediafileShare token)
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return model.ParseArtworkID("mf-" + id)
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}
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func encodeMediafileShare(s model.Share, id string) string {
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claims := map[string]any{"id": id}
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if s.Format != "" {
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claims["f"] = s.Format
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}
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if s.MaxBitRate != 0 {
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claims["b"] = s.MaxBitRate
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}
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token, _ := auth.CreateExpiringPublicToken(V(s.ExpiresAt), claims)
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return token
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}
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