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package secondary
// This file implements internal HTTP handler callbacks for secondary nodes.
import (
"context"
"crypto/ed25519"
"fmt"
"net/http"
"git.sigsum.org/log-go/internal/node/handler"
"git.sigsum.org/sigsum-go/pkg/log"
"git.sigsum.org/sigsum-go/pkg/merkle"
"git.sigsum.org/sigsum-go/pkg/types"
)
func getTreeHeadToCosign(ctx context.Context, c handler.Config, w http.ResponseWriter, _ *http.Request) (int, error) {
s := c.(Secondary)
log.Debug("handling get-tree-head-to-cosign request")
signedTreeHead := func() (*types.SignedTreeHead, error) {
tctx, cancel := context.WithTimeout(ctx, s.Config.Deadline)
defer cancel()
th, err := treeHeadFromTrillian(tctx, s.TrillianClient)
if err != nil {
return nil, fmt.Errorf("getting tree head: %w", err)
}
namespace := merkle.HashFn(s.Signer.Public().(ed25519.PublicKey))
sth, err := th.Sign(s.Signer, namespace)
if err != nil {
return nil, fmt.Errorf("signing tree head: %w", err)
}
return sth, nil
}
sth, err := signedTreeHead()
if err != nil {
return http.StatusInternalServerError, err
}
if err := sth.ToASCII(w); err != nil {
return http.StatusInternalServerError, err
}
return http.StatusOK, nil
}
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