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hush/vendor/google.golang.org/protobuf/proto/decode_gen.go
jx12n 4d9a26498e hush: one-time secret links the server cannot read 
Paste a secret, get a link, send it. The first person to open it and press
Reveal sees the secret; the link dies at that moment. The recipient needs a
browser and nothing else — no account, no client, no installed tooling.

The server cannot read what it stores. AES-256-GCM happens in the browser and
the key lives in the URL fragment, which browsers never transmit, so hushd
holds ciphertext and no key material. That is a property of where the key sits
rather than a promise about our conduct, which is why there is deliberately no
endpoint accepting a plaintext secret and no server-side-encryption fallback:
two guarantees behind one URL would be worse than one honest guarantee.

Three decisions carry the design:

  * GET /s/{id} touches NO storage, not even to check existence. Slack, Teams,
    WhatsApp, iMessage and Outlook Safe Links all fetch a URL before a human
    sees it, so destroying on GET would destroy most secrets in transit and the
    recipient's "already used" would be indistinguishable from interception.
    Only POST /reveal consumes. Bot user-agent detection is an arms race;
    removing the side effect from GET is not. Pinned by
    TestGettingTheRevealPageNeverConsumesTheSecret.
  * Destruction is one Redis GETDEL, which is atomic. GET-then-DEL has a window
    where two simultaneous readers both win, and for a one-time secret that
    window is the product. The store contract demands atomicity and the same
    concurrency test runs against both implementations.
  * Missing, already-revealed, expired and evicted are ONE indistinguishable
    410. Separating them would confirm to a prober that a given link was real.

The secret id IS the capability, so secret.ID is a struct whose every
accidental path — %v, %s, String(), slog, json.Marshal — emits a redacted
handle or refuses, and the raw value needs an explicit Value(). The first
version tried to prevent leaks by implementing no String() at all; its own test
caught that Go's fmt prints unexported fields anyway, so forbidding the method
had removed the control rather than the leak.

Operationally: structured JSON on stdout in the fleet's wire format, which
Vector already collects with no annotation; six hush_* metrics on the chassis
registry with no id, IP or path in any label; five alert rules wired into
vmalert. The public Ingress enumerates /, /s/ and /api/ so /metrics, /healthz
and /readyz share the port but are unreachable from the internet — no
basic-auth middleware to maintain and get wrong.

Dependencies are vendored because go-chassis is private: the Woodpecker test
step and the in-cluster Kaniko build both run -mod=vendor with GOPROXY=off and
hold no git credential.

cmd/hush-mcp is a stdio MCP server doing the same client-side crypto locally,
so using hush from an agent preserves the same guarantee as using it from a
browser.
2026-09-03 00:08:38 -06:00

604 lines
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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Code generated by generate-types. DO NOT EDIT.
package proto
import (
"math"
"unicode/utf8"
"google.golang.org/protobuf/encoding/protowire"
"google.golang.org/protobuf/internal/errors"
"google.golang.org/protobuf/internal/strs"
"google.golang.org/protobuf/reflect/protoreflect"
)
// unmarshalScalar decodes a value of the given kind.
//
// Message values are decoded into a []byte which aliases the input data.
func (o UnmarshalOptions) unmarshalScalar(b []byte, wtyp protowire.Type, fd protoreflect.FieldDescriptor) (val protoreflect.Value, n int, err error) {
switch fd.Kind() {
case protoreflect.BoolKind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfBool(protowire.DecodeBool(v)), n, nil
case protoreflect.EnumKind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfEnum(protoreflect.EnumNumber(v)), n, nil
case protoreflect.Int32Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt32(int32(v)), n, nil
case protoreflect.Sint32Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt32(int32(protowire.DecodeZigZag(v & math.MaxUint32))), n, nil
case protoreflect.Uint32Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfUint32(uint32(v)), n, nil
case protoreflect.Int64Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt64(int64(v)), n, nil
case protoreflect.Sint64Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt64(protowire.DecodeZigZag(v)), n, nil
case protoreflect.Uint64Kind:
if wtyp != protowire.VarintType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfUint64(v), n, nil
case protoreflect.Sfixed32Kind:
if wtyp != protowire.Fixed32Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt32(int32(v)), n, nil
case protoreflect.Fixed32Kind:
if wtyp != protowire.Fixed32Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfUint32(uint32(v)), n, nil
case protoreflect.FloatKind:
if wtyp != protowire.Fixed32Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfFloat32(math.Float32frombits(uint32(v))), n, nil
case protoreflect.Sfixed64Kind:
if wtyp != protowire.Fixed64Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfInt64(int64(v)), n, nil
case protoreflect.Fixed64Kind:
if wtyp != protowire.Fixed64Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfUint64(v), n, nil
case protoreflect.DoubleKind:
if wtyp != protowire.Fixed64Type {
return val, 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfFloat64(math.Float64frombits(v)), n, nil
case protoreflect.StringKind:
if wtyp != protowire.BytesType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return val, 0, errDecode
}
if strs.EnforceUTF8(fd) && !utf8.Valid(v) {
return protoreflect.Value{}, 0, errors.InvalidUTF8(string(fd.FullName()))
}
return protoreflect.ValueOfString(string(v)), n, nil
case protoreflect.BytesKind:
if wtyp != protowire.BytesType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfBytes(append(emptyBuf[:], v...)), n, nil
case protoreflect.MessageKind:
if wtyp != protowire.BytesType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfBytes(v), n, nil
case protoreflect.GroupKind:
if wtyp != protowire.StartGroupType {
return val, 0, errUnknown
}
v, n := protowire.ConsumeGroup(fd.Number(), b)
if n < 0 {
return val, 0, errDecode
}
return protoreflect.ValueOfBytes(v), n, nil
default:
return val, 0, errUnknown
}
}
func (o UnmarshalOptions) unmarshalList(b []byte, wtyp protowire.Type, list protoreflect.List, fd protoreflect.FieldDescriptor) (n int, err error) {
switch fd.Kind() {
case protoreflect.BoolKind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfBool(protowire.DecodeBool(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfBool(protowire.DecodeBool(v)))
return n, nil
case protoreflect.EnumKind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfEnum(protoreflect.EnumNumber(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfEnum(protoreflect.EnumNumber(v)))
return n, nil
case protoreflect.Int32Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt32(int32(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt32(int32(v)))
return n, nil
case protoreflect.Sint32Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt32(int32(protowire.DecodeZigZag(v & math.MaxUint32))))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt32(int32(protowire.DecodeZigZag(v & math.MaxUint32))))
return n, nil
case protoreflect.Uint32Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfUint32(uint32(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfUint32(uint32(v)))
return n, nil
case protoreflect.Int64Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt64(int64(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt64(int64(v)))
return n, nil
case protoreflect.Sint64Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt64(protowire.DecodeZigZag(v)))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt64(protowire.DecodeZigZag(v)))
return n, nil
case protoreflect.Uint64Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeVarint(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfUint64(v))
}
return n, nil
}
if wtyp != protowire.VarintType {
return 0, errUnknown
}
v, n := protowire.ConsumeVarint(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfUint64(v))
return n, nil
case protoreflect.Sfixed32Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed32(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt32(int32(v)))
}
return n, nil
}
if wtyp != protowire.Fixed32Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt32(int32(v)))
return n, nil
case protoreflect.Fixed32Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed32(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfUint32(uint32(v)))
}
return n, nil
}
if wtyp != protowire.Fixed32Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfUint32(uint32(v)))
return n, nil
case protoreflect.FloatKind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed32(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfFloat32(math.Float32frombits(uint32(v))))
}
return n, nil
}
if wtyp != protowire.Fixed32Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed32(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfFloat32(math.Float32frombits(uint32(v))))
return n, nil
case protoreflect.Sfixed64Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed64(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfInt64(int64(v)))
}
return n, nil
}
if wtyp != protowire.Fixed64Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfInt64(int64(v)))
return n, nil
case protoreflect.Fixed64Kind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed64(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfUint64(v))
}
return n, nil
}
if wtyp != protowire.Fixed64Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfUint64(v))
return n, nil
case protoreflect.DoubleKind:
if wtyp == protowire.BytesType {
buf, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
for len(buf) > 0 {
v, n := protowire.ConsumeFixed64(buf)
if n < 0 {
return 0, errDecode
}
buf = buf[n:]
list.Append(protoreflect.ValueOfFloat64(math.Float64frombits(v)))
}
return n, nil
}
if wtyp != protowire.Fixed64Type {
return 0, errUnknown
}
v, n := protowire.ConsumeFixed64(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfFloat64(math.Float64frombits(v)))
return n, nil
case protoreflect.StringKind:
if wtyp != protowire.BytesType {
return 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
if strs.EnforceUTF8(fd) && !utf8.Valid(v) {
return 0, errors.InvalidUTF8(string(fd.FullName()))
}
list.Append(protoreflect.ValueOfString(string(v)))
return n, nil
case protoreflect.BytesKind:
if wtyp != protowire.BytesType {
return 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
list.Append(protoreflect.ValueOfBytes(append(emptyBuf[:], v...)))
return n, nil
case protoreflect.MessageKind:
if wtyp != protowire.BytesType {
return 0, errUnknown
}
v, n := protowire.ConsumeBytes(b)
if n < 0 {
return 0, errDecode
}
m := list.NewElement()
if err := o.unmarshalMessage(v, m.Message()); err != nil {
return 0, err
}
list.Append(m)
return n, nil
case protoreflect.GroupKind:
if wtyp != protowire.StartGroupType {
return 0, errUnknown
}
v, n := protowire.ConsumeGroup(fd.Number(), b)
if n < 0 {
return 0, errDecode
}
m := list.NewElement()
if err := o.unmarshalMessage(v, m.Message()); err != nil {
return 0, err
}
list.Append(m)
return n, nil
default:
return 0, errUnknown
}
}
// We append to an empty array rather than a nil []byte to get non-nil zero-length byte slices.
var emptyBuf [0]byte
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