mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 01:52:46 +00:00
a156188b3e
* update dependencies, bump Go version to 1.19 * bump test image Go version * update golangci-lint * update gotosocial-drone-build * sign * linting, go fmt * update swagger docs * update swagger docs * whitespace * update contributing.md * fuckin whoopsie doopsie * linterino, linteroni * fix followrequest test not starting processor * fix other api/client tests not starting processor * fix remaining tests where processor not started * bump go-runners version * don't check last-webfingered-at, processor may have updated this * update swagger command * update bun to latest version * fix embed to work the same as before with new bun Signed-off-by: kim <grufwub@gmail.com> Co-authored-by: tsmethurst <tobi.smethurst@protonmail.com>
552 lines
13 KiB
Go
552 lines
13 KiB
Go
// 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.
|
|
|
|
// Package protowire parses and formats the raw wire encoding.
|
|
// See https://developers.google.com/protocol-buffers/docs/encoding.
|
|
//
|
|
// For marshaling and unmarshaling entire protobuf messages,
|
|
// use the "google.golang.org/protobuf/proto" package instead.
|
|
package protowire
|
|
|
|
import (
|
|
"io"
|
|
"math"
|
|
"math/bits"
|
|
|
|
"google.golang.org/protobuf/internal/errors"
|
|
)
|
|
|
|
// Number represents the field number.
|
|
type Number int32
|
|
|
|
const (
|
|
MinValidNumber Number = 1
|
|
FirstReservedNumber Number = 19000
|
|
LastReservedNumber Number = 19999
|
|
MaxValidNumber Number = 1<<29 - 1
|
|
DefaultRecursionLimit = 10000
|
|
)
|
|
|
|
// IsValid reports whether the field number is semantically valid.
|
|
//
|
|
// Note that while numbers within the reserved range are semantically invalid,
|
|
// they are syntactically valid in the wire format.
|
|
// Implementations may treat records with reserved field numbers as unknown.
|
|
func (n Number) IsValid() bool {
|
|
return MinValidNumber <= n && n < FirstReservedNumber || LastReservedNumber < n && n <= MaxValidNumber
|
|
}
|
|
|
|
// Type represents the wire type.
|
|
type Type int8
|
|
|
|
const (
|
|
VarintType Type = 0
|
|
Fixed32Type Type = 5
|
|
Fixed64Type Type = 1
|
|
BytesType Type = 2
|
|
StartGroupType Type = 3
|
|
EndGroupType Type = 4
|
|
)
|
|
|
|
const (
|
|
_ = -iota
|
|
errCodeTruncated
|
|
errCodeFieldNumber
|
|
errCodeOverflow
|
|
errCodeReserved
|
|
errCodeEndGroup
|
|
errCodeRecursionDepth
|
|
)
|
|
|
|
var (
|
|
errFieldNumber = errors.New("invalid field number")
|
|
errOverflow = errors.New("variable length integer overflow")
|
|
errReserved = errors.New("cannot parse reserved wire type")
|
|
errEndGroup = errors.New("mismatching end group marker")
|
|
errParse = errors.New("parse error")
|
|
)
|
|
|
|
// ParseError converts an error code into an error value.
|
|
// This returns nil if n is a non-negative number.
|
|
func ParseError(n int) error {
|
|
if n >= 0 {
|
|
return nil
|
|
}
|
|
switch n {
|
|
case errCodeTruncated:
|
|
return io.ErrUnexpectedEOF
|
|
case errCodeFieldNumber:
|
|
return errFieldNumber
|
|
case errCodeOverflow:
|
|
return errOverflow
|
|
case errCodeReserved:
|
|
return errReserved
|
|
case errCodeEndGroup:
|
|
return errEndGroup
|
|
default:
|
|
return errParse
|
|
}
|
|
}
|
|
|
|
// ConsumeField parses an entire field record (both tag and value) and returns
|
|
// the field number, the wire type, and the total length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
//
|
|
// The total length includes the tag header and the end group marker (if the
|
|
// field is a group).
|
|
func ConsumeField(b []byte) (Number, Type, int) {
|
|
num, typ, n := ConsumeTag(b)
|
|
if n < 0 {
|
|
return 0, 0, n // forward error code
|
|
}
|
|
m := ConsumeFieldValue(num, typ, b[n:])
|
|
if m < 0 {
|
|
return 0, 0, m // forward error code
|
|
}
|
|
return num, typ, n + m
|
|
}
|
|
|
|
// ConsumeFieldValue parses a field value and returns its length.
|
|
// This assumes that the field Number and wire Type have already been parsed.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
//
|
|
// When parsing a group, the length includes the end group marker and
|
|
// the end group is verified to match the starting field number.
|
|
func ConsumeFieldValue(num Number, typ Type, b []byte) (n int) {
|
|
return consumeFieldValueD(num, typ, b, DefaultRecursionLimit)
|
|
}
|
|
|
|
func consumeFieldValueD(num Number, typ Type, b []byte, depth int) (n int) {
|
|
switch typ {
|
|
case VarintType:
|
|
_, n = ConsumeVarint(b)
|
|
return n
|
|
case Fixed32Type:
|
|
_, n = ConsumeFixed32(b)
|
|
return n
|
|
case Fixed64Type:
|
|
_, n = ConsumeFixed64(b)
|
|
return n
|
|
case BytesType:
|
|
_, n = ConsumeBytes(b)
|
|
return n
|
|
case StartGroupType:
|
|
if depth < 0 {
|
|
return errCodeRecursionDepth
|
|
}
|
|
n0 := len(b)
|
|
for {
|
|
num2, typ2, n := ConsumeTag(b)
|
|
if n < 0 {
|
|
return n // forward error code
|
|
}
|
|
b = b[n:]
|
|
if typ2 == EndGroupType {
|
|
if num != num2 {
|
|
return errCodeEndGroup
|
|
}
|
|
return n0 - len(b)
|
|
}
|
|
|
|
n = consumeFieldValueD(num2, typ2, b, depth-1)
|
|
if n < 0 {
|
|
return n // forward error code
|
|
}
|
|
b = b[n:]
|
|
}
|
|
case EndGroupType:
|
|
return errCodeEndGroup
|
|
default:
|
|
return errCodeReserved
|
|
}
|
|
}
|
|
|
|
// AppendTag encodes num and typ as a varint-encoded tag and appends it to b.
|
|
func AppendTag(b []byte, num Number, typ Type) []byte {
|
|
return AppendVarint(b, EncodeTag(num, typ))
|
|
}
|
|
|
|
// ConsumeTag parses b as a varint-encoded tag, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeTag(b []byte) (Number, Type, int) {
|
|
v, n := ConsumeVarint(b)
|
|
if n < 0 {
|
|
return 0, 0, n // forward error code
|
|
}
|
|
num, typ := DecodeTag(v)
|
|
if num < MinValidNumber {
|
|
return 0, 0, errCodeFieldNumber
|
|
}
|
|
return num, typ, n
|
|
}
|
|
|
|
func SizeTag(num Number) int {
|
|
return SizeVarint(EncodeTag(num, 0)) // wire type has no effect on size
|
|
}
|
|
|
|
// AppendVarint appends v to b as a varint-encoded uint64.
|
|
func AppendVarint(b []byte, v uint64) []byte {
|
|
switch {
|
|
case v < 1<<7:
|
|
b = append(b, byte(v))
|
|
case v < 1<<14:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte(v>>7))
|
|
case v < 1<<21:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte(v>>14))
|
|
case v < 1<<28:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte(v>>21))
|
|
case v < 1<<35:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte(v>>28))
|
|
case v < 1<<42:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte((v>>28)&0x7f|0x80),
|
|
byte(v>>35))
|
|
case v < 1<<49:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte((v>>28)&0x7f|0x80),
|
|
byte((v>>35)&0x7f|0x80),
|
|
byte(v>>42))
|
|
case v < 1<<56:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte((v>>28)&0x7f|0x80),
|
|
byte((v>>35)&0x7f|0x80),
|
|
byte((v>>42)&0x7f|0x80),
|
|
byte(v>>49))
|
|
case v < 1<<63:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte((v>>28)&0x7f|0x80),
|
|
byte((v>>35)&0x7f|0x80),
|
|
byte((v>>42)&0x7f|0x80),
|
|
byte((v>>49)&0x7f|0x80),
|
|
byte(v>>56))
|
|
default:
|
|
b = append(b,
|
|
byte((v>>0)&0x7f|0x80),
|
|
byte((v>>7)&0x7f|0x80),
|
|
byte((v>>14)&0x7f|0x80),
|
|
byte((v>>21)&0x7f|0x80),
|
|
byte((v>>28)&0x7f|0x80),
|
|
byte((v>>35)&0x7f|0x80),
|
|
byte((v>>42)&0x7f|0x80),
|
|
byte((v>>49)&0x7f|0x80),
|
|
byte((v>>56)&0x7f|0x80),
|
|
1)
|
|
}
|
|
return b
|
|
}
|
|
|
|
// ConsumeVarint parses b as a varint-encoded uint64, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeVarint(b []byte) (v uint64, n int) {
|
|
var y uint64
|
|
if len(b) <= 0 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
v = uint64(b[0])
|
|
if v < 0x80 {
|
|
return v, 1
|
|
}
|
|
v -= 0x80
|
|
|
|
if len(b) <= 1 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[1])
|
|
v += y << 7
|
|
if y < 0x80 {
|
|
return v, 2
|
|
}
|
|
v -= 0x80 << 7
|
|
|
|
if len(b) <= 2 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[2])
|
|
v += y << 14
|
|
if y < 0x80 {
|
|
return v, 3
|
|
}
|
|
v -= 0x80 << 14
|
|
|
|
if len(b) <= 3 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[3])
|
|
v += y << 21
|
|
if y < 0x80 {
|
|
return v, 4
|
|
}
|
|
v -= 0x80 << 21
|
|
|
|
if len(b) <= 4 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[4])
|
|
v += y << 28
|
|
if y < 0x80 {
|
|
return v, 5
|
|
}
|
|
v -= 0x80 << 28
|
|
|
|
if len(b) <= 5 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[5])
|
|
v += y << 35
|
|
if y < 0x80 {
|
|
return v, 6
|
|
}
|
|
v -= 0x80 << 35
|
|
|
|
if len(b) <= 6 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[6])
|
|
v += y << 42
|
|
if y < 0x80 {
|
|
return v, 7
|
|
}
|
|
v -= 0x80 << 42
|
|
|
|
if len(b) <= 7 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[7])
|
|
v += y << 49
|
|
if y < 0x80 {
|
|
return v, 8
|
|
}
|
|
v -= 0x80 << 49
|
|
|
|
if len(b) <= 8 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[8])
|
|
v += y << 56
|
|
if y < 0x80 {
|
|
return v, 9
|
|
}
|
|
v -= 0x80 << 56
|
|
|
|
if len(b) <= 9 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
y = uint64(b[9])
|
|
v += y << 63
|
|
if y < 2 {
|
|
return v, 10
|
|
}
|
|
return 0, errCodeOverflow
|
|
}
|
|
|
|
// SizeVarint returns the encoded size of a varint.
|
|
// The size is guaranteed to be within 1 and 10, inclusive.
|
|
func SizeVarint(v uint64) int {
|
|
// This computes 1 + (bits.Len64(v)-1)/7.
|
|
// 9/64 is a good enough approximation of 1/7
|
|
return int(9*uint32(bits.Len64(v))+64) / 64
|
|
}
|
|
|
|
// AppendFixed32 appends v to b as a little-endian uint32.
|
|
func AppendFixed32(b []byte, v uint32) []byte {
|
|
return append(b,
|
|
byte(v>>0),
|
|
byte(v>>8),
|
|
byte(v>>16),
|
|
byte(v>>24))
|
|
}
|
|
|
|
// ConsumeFixed32 parses b as a little-endian uint32, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeFixed32(b []byte) (v uint32, n int) {
|
|
if len(b) < 4 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
v = uint32(b[0])<<0 | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
return v, 4
|
|
}
|
|
|
|
// SizeFixed32 returns the encoded size of a fixed32; which is always 4.
|
|
func SizeFixed32() int {
|
|
return 4
|
|
}
|
|
|
|
// AppendFixed64 appends v to b as a little-endian uint64.
|
|
func AppendFixed64(b []byte, v uint64) []byte {
|
|
return append(b,
|
|
byte(v>>0),
|
|
byte(v>>8),
|
|
byte(v>>16),
|
|
byte(v>>24),
|
|
byte(v>>32),
|
|
byte(v>>40),
|
|
byte(v>>48),
|
|
byte(v>>56))
|
|
}
|
|
|
|
// ConsumeFixed64 parses b as a little-endian uint64, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeFixed64(b []byte) (v uint64, n int) {
|
|
if len(b) < 8 {
|
|
return 0, errCodeTruncated
|
|
}
|
|
v = uint64(b[0])<<0 | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
return v, 8
|
|
}
|
|
|
|
// SizeFixed64 returns the encoded size of a fixed64; which is always 8.
|
|
func SizeFixed64() int {
|
|
return 8
|
|
}
|
|
|
|
// AppendBytes appends v to b as a length-prefixed bytes value.
|
|
func AppendBytes(b []byte, v []byte) []byte {
|
|
return append(AppendVarint(b, uint64(len(v))), v...)
|
|
}
|
|
|
|
// ConsumeBytes parses b as a length-prefixed bytes value, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeBytes(b []byte) (v []byte, n int) {
|
|
m, n := ConsumeVarint(b)
|
|
if n < 0 {
|
|
return nil, n // forward error code
|
|
}
|
|
if m > uint64(len(b[n:])) {
|
|
return nil, errCodeTruncated
|
|
}
|
|
return b[n:][:m], n + int(m)
|
|
}
|
|
|
|
// SizeBytes returns the encoded size of a length-prefixed bytes value,
|
|
// given only the length.
|
|
func SizeBytes(n int) int {
|
|
return SizeVarint(uint64(n)) + n
|
|
}
|
|
|
|
// AppendString appends v to b as a length-prefixed bytes value.
|
|
func AppendString(b []byte, v string) []byte {
|
|
return append(AppendVarint(b, uint64(len(v))), v...)
|
|
}
|
|
|
|
// ConsumeString parses b as a length-prefixed bytes value, reporting its length.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeString(b []byte) (v string, n int) {
|
|
bb, n := ConsumeBytes(b)
|
|
return string(bb), n
|
|
}
|
|
|
|
// AppendGroup appends v to b as group value, with a trailing end group marker.
|
|
// The value v must not contain the end marker.
|
|
func AppendGroup(b []byte, num Number, v []byte) []byte {
|
|
return AppendVarint(append(b, v...), EncodeTag(num, EndGroupType))
|
|
}
|
|
|
|
// ConsumeGroup parses b as a group value until the trailing end group marker,
|
|
// and verifies that the end marker matches the provided num. The value v
|
|
// does not contain the end marker, while the length does contain the end marker.
|
|
// This returns a negative length upon an error (see ParseError).
|
|
func ConsumeGroup(num Number, b []byte) (v []byte, n int) {
|
|
n = ConsumeFieldValue(num, StartGroupType, b)
|
|
if n < 0 {
|
|
return nil, n // forward error code
|
|
}
|
|
b = b[:n]
|
|
|
|
// Truncate off end group marker, but need to handle denormalized varints.
|
|
// Assuming end marker is never 0 (which is always the case since
|
|
// EndGroupType is non-zero), we can truncate all trailing bytes where the
|
|
// lower 7 bits are all zero (implying that the varint is denormalized).
|
|
for len(b) > 0 && b[len(b)-1]&0x7f == 0 {
|
|
b = b[:len(b)-1]
|
|
}
|
|
b = b[:len(b)-SizeTag(num)]
|
|
return b, n
|
|
}
|
|
|
|
// SizeGroup returns the encoded size of a group, given only the length.
|
|
func SizeGroup(num Number, n int) int {
|
|
return n + SizeTag(num)
|
|
}
|
|
|
|
// DecodeTag decodes the field Number and wire Type from its unified form.
|
|
// The Number is -1 if the decoded field number overflows int32.
|
|
// Other than overflow, this does not check for field number validity.
|
|
func DecodeTag(x uint64) (Number, Type) {
|
|
// NOTE: MessageSet allows for larger field numbers than normal.
|
|
if x>>3 > uint64(math.MaxInt32) {
|
|
return -1, 0
|
|
}
|
|
return Number(x >> 3), Type(x & 7)
|
|
}
|
|
|
|
// EncodeTag encodes the field Number and wire Type into its unified form.
|
|
func EncodeTag(num Number, typ Type) uint64 {
|
|
return uint64(num)<<3 | uint64(typ&7)
|
|
}
|
|
|
|
// DecodeZigZag decodes a zig-zag-encoded uint64 as an int64.
|
|
//
|
|
// Input: {…, 5, 3, 1, 0, 2, 4, 6, …}
|
|
// Output: {…, -3, -2, -1, 0, +1, +2, +3, …}
|
|
func DecodeZigZag(x uint64) int64 {
|
|
return int64(x>>1) ^ int64(x)<<63>>63
|
|
}
|
|
|
|
// EncodeZigZag encodes an int64 as a zig-zag-encoded uint64.
|
|
//
|
|
// Input: {…, -3, -2, -1, 0, +1, +2, +3, …}
|
|
// Output: {…, 5, 3, 1, 0, 2, 4, 6, …}
|
|
func EncodeZigZag(x int64) uint64 {
|
|
return uint64(x<<1) ^ uint64(x>>63)
|
|
}
|
|
|
|
// DecodeBool decodes a uint64 as a bool.
|
|
//
|
|
// Input: { 0, 1, 2, …}
|
|
// Output: {false, true, true, …}
|
|
func DecodeBool(x uint64) bool {
|
|
return x != 0
|
|
}
|
|
|
|
// EncodeBool encodes a bool as a uint64.
|
|
//
|
|
// Input: {false, true}
|
|
// Output: { 0, 1}
|
|
func EncodeBool(x bool) uint64 {
|
|
if x {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|