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package requests
import (
"fmt"
"io"
"strconv"
"strings"
"git.sigsum.org/sigsum-go/pkg/ascii"
"git.sigsum.org/sigsum-go/pkg/hex"
"git.sigsum.org/sigsum-go/pkg/types"
)
type Leaf struct {
ShardHint uint64 `ascii:"shard_hint"`
Preimage types.Hash `ascii:"preimage"`
Signature types.Signature `ascii:"signature"`
VerificationKey types.PublicKey `ascii:"verification_key"`
DomainHint string `ascii:"domain_hint"`
}
type Leaves struct {
StartSize uint64
EndSize uint64
}
type InclusionProof struct {
TreeSize uint64
LeafHash types.Hash
}
type ConsistencyProof struct {
OldSize uint64
NewSize uint64
}
type Cosignature struct {
Cosignature types.Signature `ascii:"cosignature"`
KeyHash types.Hash `ascii:"key_hash"`
}
func (req *Leaf) ToASCII(w io.Writer) error {
return ascii.StdEncoding.Serialize(w, req)
}
// ToURL encodes request parameters at the end of a slash-terminated URL
func (req *Leaves) ToURL(url string) string {
return url + fmt.Sprintf("%d/%d", req.StartSize, req.EndSize)
}
// ToURL encodes request parameters at the end of a slash-terminated URL
func (req *InclusionProof) ToURL(url string) string {
return url + fmt.Sprintf("%d/%s", req.TreeSize, hex.Serialize(req.LeafHash[:]))
}
// ToURL encodes request parameters at the end of a slash-terminated URL
func (req *ConsistencyProof) ToURL(url string) string {
return url + fmt.Sprintf("%d/%d", req.OldSize, req.NewSize)
}
func (req *Cosignature) ToASCII(w io.Writer) error {
return ascii.StdEncoding.Serialize(w, req)
}
func (req *Leaf) FromASCII(r io.Reader) error {
return ascii.StdEncoding.Deserialize(r, req)
}
// FromURL parses request parameters from a URL that is not slash-terminated
func (req *Leaves) FromURL(url string) (err error) {
split := strings.Split(url, "/")
if len(split) < 2 {
return fmt.Errorf("not enough input")
}
startSize := split[len(split)-2]
if req.StartSize, err = strconv.ParseUint(startSize, 10, 64); err != nil {
return err
}
endSize := split[len(split)-1]
if req.EndSize, err = strconv.ParseUint(endSize, 10, 64); err != nil {
return err
}
return nil
}
// FromURL parses request parameters from a URL that is not slash-terminated
func (req *InclusionProof) FromURL(url string) (err error) {
split := strings.Split(url, "/")
if len(split) < 2 {
return fmt.Errorf("not enough input")
}
treeSize := split[len(split)-2]
if req.TreeSize, err = strconv.ParseUint(treeSize, 10, 64); err != nil {
return err
}
b, err := hex.Deserialize(split[len(split)-1])
if err != nil {
return err
}
if n := len(b); n != types.HashSize {
return fmt.Errorf("invalid hash size %d", n)
}
copy(req.LeafHash[:], b)
return nil
}
// FromURL parses request parameters from a URL that is not slash-terminated
func (req *ConsistencyProof) FromURL(url string) (err error) {
split := strings.Split(url, "/")
if len(split) < 2 {
return fmt.Errorf("not enough input")
}
oldSize := split[len(split)-2]
if req.OldSize, err = strconv.ParseUint(oldSize, 10, 64); err != nil {
return err
}
newSize := split[len(split)-1]
if req.NewSize, err = strconv.ParseUint(newSize, 10, 64); err != nil {
return err
}
return nil
}
func (req *Cosignature) FromASCII(r io.Reader) error {
return ascii.StdEncoding.Deserialize(r, req)
}
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