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Bump gomatrixserverlib (#353)

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* Bump gomatrixserverlib

Mostly because I want to use Erik's go-faster jsoning.

* Update KeyDB for new KeyFetcher API

we now need to implement FetcherName.

* Attempt to fix integ tests

CanonicalJSON doesn't like the empty string, apparently, and anyway
canonicalising it is pointless.

* More integ test fix
This commit is contained in:
Richard van der Hoff 2017-11-27 12:05:14 +00:00 committed by GitHub
parent 9e352e7311
commit 0786318a04
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
27 changed files with 7126 additions and 126 deletions
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4
src/github.com/matrix-org/dendrite/cmd/mediaapi-integration-tests/main.go
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@ -239,7 +239,7 @@ func testDownload(host, origin, mediaID string, wantedStatusCode int, serverCmdC
testReq := &test.Request{
Req: req,
WantedStatusCode: wantedStatusCode,
WantedBody: test.CanonicalJSONInput([]string{""})[0],
WantedBody: "",
}
testReq.Run(fmt.Sprintf("download mxc://%v/%v from %v", origin, mediaID, host), timeout, serverCmdChan)
}
@ -263,7 +263,7 @@ func testThumbnail(width, height int, resizeMethod, host string, serverCmdChan c
testReq := &test.Request{
Req: req,
WantedStatusCode: 200,
WantedBody: test.CanonicalJSONInput([]string{""})[0],
WantedBody: "",
}
testReq.Run(fmt.Sprintf("thumbnail mxc://%v/%v%v from %v", testOrigin, testMediaID, query, host), timeout, serverCmdChan)
}

5
src/github.com/matrix-org/dendrite/common/keydb/keydb.go
View File

@ -44,6 +44,11 @@ func NewDatabase(dataSourceName string) (*Database, error) {
return d, nil
}
// FetcherName implements KeyFetcher
func (d Database) FetcherName() string {
return "KeyDatabase"
}
// FetchKeys implements gomatrixserverlib.KeyDatabase
func (d *Database) FetchKeys(
ctx context.Context,

20
vendor/manifest vendored
View File

@ -135,7 +135,7 @@
{
"importpath": "github.com/matrix-org/gomatrixserverlib",
"repository": "https://github.com/matrix-org/gomatrixserverlib",
"revision": "076933f95312aae3a9476e78d6b4118e1b45d542",
"revision": "8540d3dfc13c797cd3200640bc06e0286ab355aa",
"branch": "master"
},
{
@ -274,6 +274,24 @@
"branch": "master",
"path": "/require"
},
{
"importpath": "github.com/tidwall/gjson",
"repository": "https://github.com/tidwall/gjson",
"revision": "67e2a63ac70d273b6bc7589f12f07180bc9fc189",
"branch": "master"
},
{
"importpath": "github.com/tidwall/match",
"repository": "https://github.com/tidwall/match",
"revision": "1731857f09b1f38450e2c12409748407822dc6be",
"branch": "master"
},
{
"importpath": "github.com/tidwall/sjson",
"repository": "https://github.com/tidwall/sjson",
"revision": "6a22caf2fd45d5e2119bfc3717e984f15a7eb7ee",
"branch": "master"
},
{
"importpath": "github.com/tj/go-debug",
"repository": "https://github.com/tj/go-debug",

24
vendor/src/github.com/matrix-org/gomatrixserverlib/client.go vendored
View File

@ -175,7 +175,29 @@ func (fc *Client) LookupUserInfo(
return
}
// LookupServerKeys lookups up the keys for a matrix server from a matrix server.
// GetServerKeys asks a matrix server for its signing keys and TLS cert
func (fc *Client) GetServerKeys(
ctx context.Context, matrixServer ServerName,
) (ServerKeys, error) {
url := url.URL{
Scheme: "matrix",
Host: string(matrixServer),
Path: "/_matrix/key/v2/server",
}
var body ServerKeys
req, err := http.NewRequest("GET", url.String(), nil)
if err != nil {
return body, err
}
err = fc.DoRequestAndParseResponse(
ctx, req, &body,
)
return body, err
}
// LookupServerKeys looks up the keys for a matrix server from a matrix server.
// The first argument is the name of the matrix server to download the keys from.
// The second argument is a map from (server name, key ID) pairs to timestamps.
// The (server name, key ID) pair identifies the key to download.

73
vendor/src/github.com/matrix-org/gomatrixserverlib/event.go vendored
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@ -16,11 +16,13 @@
package gomatrixserverlib
import (
"bytes"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/tidwall/sjson"
"golang.org/x/crypto/ed25519"
)
@ -183,38 +185,53 @@ func (eb *EventBuilder) Build(eventID string, now time.Time, origin ServerName,
// It also checks the content hashes to ensure the event has not been tampered with.
// This should be used when receiving new events from remote servers.
func NewEventFromUntrustedJSON(eventJSON []byte) (result Event, err error) {
var event map[string]rawJSON
if err = json.Unmarshal(eventJSON, &event); err != nil {
return
}
// Synapse removes these keys from events in case a server accidentally added them.
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/crypto/event_signing.py#L57-L62
delete(event, "outlier")
delete(event, "destinations")
delete(event, "age_ts")
if eventJSON, err = json.Marshal(event); err != nil {
return
}
if err = checkEventContentHash(eventJSON); err != nil {
result.redacted = true
// If the content hash doesn't match then we have to discard all non-essential fields
// because they've been tampered with.
if eventJSON, err = redactEvent(eventJSON); err != nil {
return
}
}
if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
return
}
result.eventJSON = eventJSON
// We parse the JSON early on so that we don't have to check if the JSON
// is valid
if err = json.Unmarshal(eventJSON, &result.fields); err != nil {
return
}
// Synapse removes these keys from events in case a server accidentally added them.
// https://github.com/matrix-org/synapse/blob/v0.18.5/synapse/crypto/event_signing.py#L57-L62
for _, key := range []string{"outlier", "destinations", "age_ts"} {
if eventJSON, err = sjson.DeleteBytes(eventJSON, key); err != nil {
return
}
}
// We know the JSON must be valid here.
eventJSON = CanonicalJSONAssumeValid(eventJSON)
if err = checkEventContentHash(eventJSON); err != nil {
result.redacted = true
// If the content hash doesn't match then we have to discard all non-essential fields
// because they've been tampered with.
var redactedJSON []byte
if redactedJSON, err = redactEvent(eventJSON); err != nil {
return
}
redactedJSON = CanonicalJSONAssumeValid(redactedJSON)
// We need to ensure that `result` is the redacted event.
// If redactedJSON is the same as eventJSON then `result` is already
// correct. If not then we need to reparse.
//
// Yes, this means that for some events we parse twice (which is slow),
// but means that parsing unredacted events is fast.
if !bytes.Equal(redactedJSON, eventJSON) {
result = Event{redacted: true}
if err = json.Unmarshal(redactedJSON, &result.fields); err != nil {
return
}
}
eventJSON = redactedJSON
}
result.eventJSON = eventJSON
if err = result.CheckFields(); err != nil {
return
}

52
vendor/src/github.com/matrix-org/gomatrixserverlib/event_test.go vendored Normal file
View File

@ -0,0 +1,52 @@
/* Copyright 2017 New Vector Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gomatrixserverlib
import (
"encoding/json"
"testing"
)
func benchmarkParse(b *testing.B, eventJSON string) {
var event Event
// run the Unparse function b.N times
for n := 0; n < b.N; n++ {
if err := json.Unmarshal([]byte(eventJSON), &event); err != nil {
b.Error("Failed to parse event")
}
}
}
// Benchmark a more complicated event, in this case a power levels event.
func BenchmarkParseLargerEvent(b *testing.B) {
benchmarkParse(b, `{"auth_events":[["$Stdin0028C5qBjz5:localhost",{"sha256":"PvTyW+Mfb0aCajkIlBk1XlQE+1uVco3to8C2+/1J7iQ"}],["$klXtjBwwDQIGglax:localhost",{"sha256":"hLoiSkcGLZJr5wkIDA8+bujNJPsYX1SOCCXIErHEcgM"}]],"content":{"ban":50,"events":{"m.room.avatar":50,"m.room.canonical_alias":50,"m.room.history_visibility":100,"m.room.name":50,"m.room.power_levels":100},"events_default":0,"invite":0,"kick":50,"redact":50,"state_default":50,"users":{"@test:localhost":100},"users_default":0},"depth":3,"event_id":"$7gPR7SLdkfDsMvJL:localhost","hashes":{"sha256":"/kQnrzO5vhbnwyGvKso4CVMRyyryiyanq6t27mt5kSw"},"origin":"localhost","origin_server_ts":1510854446548,"prev_events":[["$klXtjBwwDQIGglax:localhost",{"sha256":"hLoiSkcGLZJr5wkIDA8+bujNJPsYX1SOCCXIErHEcgM"}]],"prev_state":[],"room_id":"!pUjJbIC8V32G0FLt:localhost","sender":"@test:localhost","signatures":{"localhost":{"ed25519:u9kP":"NOxjrcci7AIRhcTVmJ6nrsslLsaOJzB0iusDZ6cOFrv2OXkDY7mrBM3cQQS3DhGWltEtu3OC0nsvkfeYtwr9DQ"}},"state_key":"","type":"m.room.power_levels"}`)
}
// Lets now test parsing a smaller name event, first one that is valid, then wrong hash, and then the redacted one
func BenchmarkParseSmallerEvent(b *testing.B) {
benchmarkParse(b, `{"auth_events":[["$oXL79cT7fFxR7dPH:localhost",{"sha256":"abjkiDSg1RkuZrbj2jZoGMlQaaj1Ue3Jhi7I7NlKfXY"}],["$IVUsaSkm1LBAZYYh:localhost",{"sha256":"X7RUj46hM/8sUHNBIFkStbOauPvbDzjSdH4NibYWnko"}],["$VS2QT0EeArZYi8wf:localhost",{"sha256":"k9eM6utkCH8vhLW9/oRsH74jOBS/6RVK42iGDFbylno"}]],"content":{"name":"test3"},"depth":7,"event_id":"$yvN1b43rlmcOs5fY:localhost","hashes":{"sha256":"Oh1mwI1jEqZ3tgJ+V1Dmu5nOEGpCE4RFUqyJv2gQXKs"},"origin":"localhost","origin_server_ts":1510854416361,"prev_events":[["$FqI6TVvWpcbcnJ97:localhost",{"sha256":"upCsBqUhNUgT2/+zkzg8TbqdQpWWKQnZpGJc6KcbUC4"}]],"prev_state":[],"room_id":"!19Mp0U9hjajeIiw1:localhost","sender":"@test:localhost","signatures":{"localhost":{"ed25519:u9kP":"5IzSuRXkxvbTp0vZhhXYZeOe+619iG3AybJXr7zfNn/4vHz4TH7qSJVQXSaHHvcTcDodAKHnTG1WDulgO5okAQ"}},"state_key":"","type":"m.room.name"}`)
}
func BenchmarkParseSmallerEventFailedHash(b *testing.B) {
benchmarkParse(b, `{"auth_events":[["$oXL79cT7fFxR7dPH:localhost",{"sha256":"abjkiDSg1RkuZrbj2jZoGMlQaaj1Ue3Jhi7I7NlKfXY"}],["$IVUsaSkm1LBAZYYh:localhost",{"sha256":"X7RUj46hM/8sUHNBIFkStbOauPvbDzjSdH4NibYWnko"}],["$VS2QT0EeArZYi8wf:localhost",{"sha256":"k9eM6utkCH8vhLW9/oRsH74jOBS/6RVK42iGDFbylno"}]],"content":{"name":"test4"},"depth":7,"event_id":"$yvN1b43rlmcOs5fY:localhost","hashes":{"sha256":"Oh1mwI1jEqZ3tgJ+V1Dmu5nOEGpCE4RFUqyJv2gQXKs"},"origin":"localhost","origin_server_ts":1510854416361,"prev_events":[["$FqI6TVvWpcbcnJ97:localhost",{"sha256":"upCsBqUhNUgT2/+zkzg8TbqdQpWWKQnZpGJc6KcbUC4"}]],"prev_state":[],"room_id":"!19Mp0U9hjajeIiw1:localhost","sender":"@test:localhost","signatures":{"localhost":{"ed25519:u9kP":"5IzSuRXkxvbTp0vZhhXYZeOe+619iG3AybJXr7zfNn/4vHz4TH7qSJVQXSaHHvcTcDodAKHnTG1WDulgO5okAQ"}},"state_key":"","type":"m.room.name"}`)
}
func BenchmarkParseSmallerEventRedacted(b *testing.B) {
benchmarkParse(b, `{"event_id":"$yvN1b43rlmcOs5fY:localhost","sender":"@test:localhost","room_id":"!19Mp0U9hjajeIiw1:localhost","hashes":{"sha256":"Oh1mwI1jEqZ3tgJ+V1Dmu5nOEGpCE4RFUqyJv2gQXKs"},"signatures":{"localhost":{"ed25519:u9kP":"5IzSuRXkxvbTp0vZhhXYZeOe+619iG3AybJXr7zfNn/4vHz4TH7qSJVQXSaHHvcTcDodAKHnTG1WDulgO5okAQ"}},"content":{},"type":"m.room.name","state_key":"","depth":7,"prev_events":[["$FqI6TVvWpcbcnJ97:localhost",{"sha256":"upCsBqUhNUgT2/+zkzg8TbqdQpWWKQnZpGJc6KcbUC4"}]],"prev_state":[],"auth_events":[["$oXL79cT7fFxR7dPH:localhost",{"sha256":"abjkiDSg1RkuZrbj2jZoGMlQaaj1Ue3Jhi7I7NlKfXY"}],["$IVUsaSkm1LBAZYYh:localhost",{"sha256":"X7RUj46hM/8sUHNBIFkStbOauPvbDzjSdH4NibYWnko"}],["$VS2QT0EeArZYi8wf:localhost",{"sha256":"k9eM6utkCH8vhLW9/oRsH74jOBS/6RVK42iGDFbylno"}]],"origin":"localhost","origin_server_ts":1510854416361}`)
}

34
vendor/src/github.com/matrix-org/gomatrixserverlib/eventcrypto.go vendored
View File

@ -22,6 +22,8 @@ import (
"encoding/json"
"fmt"
"github.com/tidwall/gjson"
"github.com/tidwall/sjson"
"golang.org/x/crypto/ed25519"
)
@ -68,40 +70,28 @@ func addContentHashesToEvent(eventJSON []byte) ([]byte, error) {
}
// checkEventContentHash checks if the unredacted content of the event matches the SHA-256 hash under the "hashes" key.
// Assumes that eventJSON has been canonicalised already.
func checkEventContentHash(eventJSON []byte) error {
var event map[string]rawJSON
var err error
if err := json.Unmarshal(eventJSON, &event); err != nil {
result := gjson.GetBytes(eventJSON, "hashes.sha256")
var hash Base64String
if err = hash.Decode(result.Str); err != nil {
return err
}
hashesJSON := event["hashes"]
hashableEventJSON := eventJSON
delete(event, "signatures")
delete(event, "unsigned")
delete(event, "hashes")
var hashes struct {
Sha256 Base64String `json:"sha256"`
}
if err := json.Unmarshal(hashesJSON, &hashes); err != nil {
for _, key := range []string{"signatures", "unsigned", "hashes"} {
if hashableEventJSON, err = sjson.DeleteBytes(hashableEventJSON, key); err != nil {
return err
}
hashableEventJSON, err := json.Marshal(event)
if err != nil {
return err
}
hashableEventJSON, err = CanonicalJSON(hashableEventJSON)
if err != nil {
return err
}
sha256Hash := sha256.Sum256(hashableEventJSON)
if !bytes.Equal(sha256Hash[:], []byte(hashes.Sha256)) {
return fmt.Errorf("Invalid Sha256 content hash: %v != %v", sha256Hash[:], []byte(hashes.Sha256))
if !bytes.Equal(sha256Hash[:], []byte(hash)) {
return fmt.Errorf("Invalid Sha256 content hash: %v != %v", sha256Hash[:], []byte(hash))
}
return nil

6
vendor/src/github.com/matrix-org/gomatrixserverlib/federationtypes.go vendored
View File

@ -4,6 +4,8 @@ import (
"context"
"encoding/json"
"fmt"
"github.com/matrix-org/util"
)
// A RespSend is the content of a response to PUT /_matrix/federation/v1/send/{txnID}/
@ -109,6 +111,7 @@ func (r RespState) Events() ([]Event, error) {
// Check that a response to /state is valid.
func (r RespState) Check(ctx context.Context, keyRing JSONVerifier) error {
logger := util.GetLogger(ctx)
var allEvents []Event
for _, event := range r.AuthEvents {
if event.StateKey() == nil {
@ -134,8 +137,9 @@ func (r RespState) Check(ctx context.Context, keyRing JSONVerifier) error {
}
// Check if the events pass signature checks.
logger.Infof("Checking event signatures for %d events of room state", len(allEvents))
if err := VerifyEventSignatures(ctx, allEvents, keyRing); err != nil {
return nil
return err
}
eventsByID := map[string]*Event{}

19
vendor/src/github.com/matrix-org/gomatrixserverlib/hooks/pre-commit vendored
View File

@ -2,6 +2,25 @@
set -eu
# make the GIT_DIR and GIT_INDEX_FILE absolute, before we change dir
export GIT_DIR=$(readlink -f `git rev-parse --git-dir`)
if [ -n "${GIT_INDEX_FILE:+x}" ]; then
export GIT_INDEX_FILE=$(readlink -f "$GIT_INDEX_FILE")
fi
wd=`pwd`
# create a temp dir. The `trap` incantation will ensure that it is removed
# again when this script completes.
tmpdir=`mktemp -d`
trap 'rm -rf "$tmpdir"' EXIT
cd "$tmpdir"
# get a clean copy of the index (ie, what has been `git add`ed), so that we can
# run the checks against what we are about to commit, rather than what is in
# the working copy.
git checkout-index -a
echo "Installing lint search engine..."
go get github.com/alecthomas/gometalinter/
gometalinter --config=linter.json --install --update

155
vendor/src/github.com/matrix-org/gomatrixserverlib/json.go vendored
View File

@ -16,66 +16,73 @@
package gomatrixserverlib
import (
"bytes"
"encoding/binary"
"encoding/json"
"sort"
"unicode/utf8"
"github.com/pkg/errors"
"github.com/tidwall/gjson"
)
// CanonicalJSON re-encodes the JSON in a canonical encoding. The encoding is
// the shortest possible encoding using integer values with sorted object keys.
// https://matrix.org/docs/spec/server_server/unstable.html#canonical-json
func CanonicalJSON(input []byte) ([]byte, error) {
sorted, err := SortJSON(input, make([]byte, 0, len(input)))
if err != nil {
return nil, err
if !gjson.Valid(string(input)) {
return nil, errors.Errorf("invalid json")
}
return CompactJSON(sorted, make([]byte, 0, len(sorted))), nil
return CanonicalJSONAssumeValid(input), nil
}
// CanonicalJSONAssumeValid is the same as CanonicalJSON, but assumes the
// input is valid JSON
func CanonicalJSONAssumeValid(input []byte) []byte {
input = CompactJSON(input, make([]byte, 0, len(input)))
return SortJSON(input, make([]byte, 0, len(input)))
}
// SortJSON reencodes the JSON with the object keys sorted by lexicographically
// by codepoint. The input must be valid JSON.
func SortJSON(input, output []byte) ([]byte, error) {
// Skip to the first character that isn't whitespace.
var decoded interface{}
func SortJSON(input, output []byte) []byte {
result := gjson.ParseBytes(input)
decoder := json.NewDecoder(bytes.NewReader(input))
decoder.UseNumber()
if err := decoder.Decode(&decoded); err != nil {
return nil, err
}
return sortJSONValue(decoded, output)
rawJSON := rawJSONFromResult(result, input)
return sortJSONValue(result, rawJSON, output)
}
func sortJSONValue(input interface{}, output []byte) ([]byte, error) {
switch value := input.(type) {
case []interface{}:
// If the JSON is an array then we need to sort the keys of its children.
return sortJSONArray(value, output)
case map[string]interface{}:
// If the JSON is an object then we need to sort its keys and the keys of its children.
return sortJSONObject(value, output)
default:
// Otherwise the JSON is a value and can be encoded without any further sorting.
bytes, err := json.Marshal(value)
if err != nil {
return nil, err
}
return append(output, bytes...), nil
}
// sortJSONValue takes a gjson.Result and sorts it. inputJSON must be the
// raw JSON bytes that gjson.Result points to.
func sortJSONValue(input gjson.Result, inputJSON, output []byte) []byte {
if input.IsArray() {
return sortJSONArray(input, inputJSON, output)
}
func sortJSONArray(input []interface{}, output []byte) ([]byte, error) {
var err error
if input.IsObject() {
return sortJSONObject(input, inputJSON, output)
}
// If its neither an object nor an array then there is no sub structure
// to sort, so just append the raw bytes.
return append(output, inputJSON...)
}
// sortJSONArray takes a gjson.Result and sorts it, assuming its an array.
// inputJSON must be the raw JSON bytes that gjson.Result points to.
func sortJSONArray(input gjson.Result, inputJSON, output []byte) []byte {
sep := byte('[')
for _, value := range input {
// Iterate over each value in the array and sort it.
input.ForEach(func(_, value gjson.Result) bool {
output = append(output, sep)
sep = ','
if output, err = sortJSONValue(value, output); err != nil {
return nil, err
}
}
rawJSON := rawJSONFromResult(value, inputJSON)
output = sortJSONValue(value, rawJSON, output)
return true // keep iterating
})
if sep == '[' {
// If sep is still '[' then the array was empty and we never wrote the
// initial '[', so we write it now along with the closing ']'.
@ -84,31 +91,49 @@ func sortJSONArray(input []interface{}, output []byte) ([]byte, error) {
// Otherwise we end the array by writing a single ']'
output = append(output, ']')
}
return output, nil
return output
}
func sortJSONObject(input map[string]interface{}, output []byte) ([]byte, error) {
var err error
keys := make([]string, len(input))
var j int
for key := range input {
keys[j] = key
j++
// sortJSONObject takes a gjson.Result and sorts it, assuming its an object.
// inputJSON must be the raw JSON bytes that gjson.Result points to.
func sortJSONObject(input gjson.Result, inputJSON, output []byte) []byte {
type entry struct {
key string // The parsed key string
rawKey []byte // The raw, unparsed key JSON string
value gjson.Result
}
sort.Strings(keys)
var entries []entry
// Iterate over each key/value pair and add it to a slice
// that we can sort
input.ForEach(func(key, value gjson.Result) bool {
entries = append(entries, entry{
key: key.String(),
rawKey: rawJSONFromResult(key, inputJSON),
value: value,
})
return true // keep iterating
})
// Sort the slice based on the *parsed* key
sort.Slice(entries, func(a, b int) bool {
return entries[a].key < entries[b].key
})
sep := byte('{')
for _, key := range keys {
for _, entry := range entries {
output = append(output, sep)
sep = ','
var encoded []byte
if encoded, err = json.Marshal(key); err != nil {
return nil, err
}
output = append(output, encoded...)
// Append the raw unparsed JSON key, *not* the parsed key
output = append(output, entry.rawKey...)
output = append(output, ':')
if output, err = sortJSONValue(input[key], output); err != nil {
return nil, err
}
rawJSON := rawJSONFromResult(entry.value, inputJSON)
output = sortJSONValue(entry.value, rawJSON, output)
}
if sep == '{' {
// If sep is still '{' then the object was empty and we never wrote the
@ -118,7 +143,7 @@ func sortJSONObject(input map[string]interface{}, output []byte) ([]byte, error)
// Otherwise we end the object by writing a single '}'
output = append(output, '}')
}
return output, nil
return output
}
// CompactJSON makes the encoded JSON as small as possible by removing
@ -237,3 +262,19 @@ func readHexDigits(input []byte) uint32 {
hex |= hex >> 8
return hex & 0xFFFF
}
// rawJSONFromResult extracts the raw JSON bytes pointed to by result.
// input must be the json bytes that were used to generate result
func rawJSONFromResult(result gjson.Result, input []byte) (rawJSON []byte) {
// This is lifted from gjson README. Basically, result.Raw is a copy of
// the bytes we want, but its more efficient to take a slice.
// If Index is 0 then for some reason we can't extract it from the original
// JSON bytes.
if result.Index > 0 {
rawJSON = input[result.Index : result.Index+len(result.Raw)]
} else {
rawJSON = []byte(result.Raw)
}
return
}

7
vendor/src/github.com/matrix-org/gomatrixserverlib/json_test.go vendored
View File

@ -20,10 +20,8 @@ import (
)
func testSortJSON(t *testing.T, input, want string) {
got, err := SortJSON([]byte(input), nil)
if err != nil {
t.Error(err)
}
got := SortJSON([]byte(input), nil)
// Squash out the whitespace before comparing the JSON in case SortJSON had inserted whitespace.
if string(CompactJSON(got, nil)) != want {
t.Errorf("SortJSON(%q): want %q got %q", input, want, got)
@ -36,6 +34,7 @@ func TestSortJSON(t *testing.T) {
`{"A":{"1":1,"2":2},"B":{"3":3,"4":4}}`)
testSortJSON(t, `[true,false,null]`, `[true,false,null]`)
testSortJSON(t, `[9007199254740991]`, `[9007199254740991]`)
testSortJSON(t, "\t\n[9007199254740991]", `[9007199254740991]`)
}
func testCompactJSON(t *testing.T, input, want string) {

51
vendor/src/github.com/matrix-org/gomatrixserverlib/keyring.go vendored
View File

@ -6,6 +6,7 @@ import (
"strings"
"time"
"github.com/matrix-org/util"
"golang.org/x/crypto/ed25519"
)
@ -60,6 +61,10 @@ type KeyFetcher interface {
// The result may have more (server name, key ID) pairs than were in the request.
// Returns an error if there was a problem fetching the keys.
FetchKeys(ctx context.Context, requests map[PublicKeyRequest]Timestamp) (map[PublicKeyRequest]PublicKeyLookupResult, error)
// FetcherName returns the name of this fetcher, which can then be used for
// logging errors etc.
FetcherName() string
}
// A KeyDatabase is a store for caching public keys.
@ -113,6 +118,7 @@ type JSONVerifier interface {
// VerifyJSONs implements JSONVerifier.
func (k KeyRing) VerifyJSONs(ctx context.Context, requests []VerifyJSONRequest) ([]VerifyJSONResult, error) { // nolint: gocyclo
logger := util.GetLogger(ctx)
results := make([]VerifyJSONResult, len(requests))
keyIDs := make([][]KeyID, len(requests))
@ -154,7 +160,7 @@ func (k KeyRing) VerifyJSONs(ctx context.Context, requests []VerifyJSONRequest)
}
k.checkUsingKeys(requests, results, keyIDs, keysFromDatabase)
for i := range k.KeyFetchers {
for _, fetcher := range k.KeyFetchers {
// TODO: we should distinguish here between expired keys, and those we don't have.
// If the key has expired, it's no use re-requesting it.
keyRequests := k.publicKeyRequests(requests, results, keyIDs)
@ -163,12 +169,22 @@ func (k KeyRing) VerifyJSONs(ctx context.Context, requests []VerifyJSONRequest)
// This means that we've checked every JSON object we can check.
return results, nil
}
fetcherLogger := logger.WithField("fetcher", fetcher.FetcherName())
// TODO: Coalesce in-flight requests for the same keys.
// Otherwise we risk spamming the servers we query the keys from.
keysFetched, err := k.KeyFetchers[i].FetchKeys(ctx, keyRequests)
fetcherLogger.WithField("num_key_requests", len(keyRequests)).
Info("Requesting keys from fetcher")
keysFetched, err := fetcher.FetchKeys(ctx, keyRequests)
if err != nil {
return nil, err
}
fetcherLogger.WithField("num_keys_fetched", len(keysFetched)).
Info("Got keys from fetcher")
k.checkUsingKeys(requests, results, keyIDs, keysFetched)
// Add the keys to the database so that we won't need to fetch them again.
@ -259,6 +275,11 @@ type PerspectiveKeyFetcher struct {
Client Client
}
// FetcherName implements KeyFetcher
func (p PerspectiveKeyFetcher) FetcherName() string {
return fmt.Sprintf("perspective server %s", p.PerspectiveServerName)
}
// FetchKeys implements KeyFetcher
func (p *PerspectiveKeyFetcher) FetchKeys(
ctx context.Context, requests map[PublicKeyRequest]Timestamp,
@ -303,7 +324,8 @@ func (p *PerspectiveKeyFetcher) FetchKeys(
return nil, fmt.Errorf("gomatrixserverlib: key response from perspective server failed checks")
}
// TODO: What happens if the same key ID appears in multiple responses?
// TODO (matrix-org/dendrite#345): What happens if the same key ID
// appears in multiple responses?
// We should probably take the response with the highest valid_until_ts.
mapServerKeysToPublicKeyLookupResult(keys, results)
}
@ -318,6 +340,11 @@ type DirectKeyFetcher struct {
Client Client
}
// FetcherName implements KeyFetcher
func (d DirectKeyFetcher) FetcherName() string {
return "DirectKeyFetcher"
}
// FetchKeys implements KeyFetcher
func (d *DirectKeyFetcher) FetchKeys(
ctx context.Context, requests map[PublicKeyRequest]Timestamp,
@ -333,9 +360,9 @@ func (d *DirectKeyFetcher) FetchKeys(
}
results := map[PublicKeyRequest]PublicKeyLookupResult{}
for server, reqs := range byServer {
for server := range byServer {
// TODO: make these requests in parallel
serverResults, err := d.fetchKeysForServer(ctx, server, reqs)
serverResults, err := d.fetchKeysForServer(ctx, server)
if err != nil {
// TODO: Should we actually be erroring here? or should we just drop those keys from the result map?
return nil, err
@ -348,25 +375,23 @@ func (d *DirectKeyFetcher) FetchKeys(
}
func (d *DirectKeyFetcher) fetchKeysForServer(
ctx context.Context, serverName ServerName, requests map[PublicKeyRequest]Timestamp,
ctx context.Context, serverName ServerName,
) (map[PublicKeyRequest]PublicKeyLookupResult, error) {
serverKeys, err := d.Client.LookupServerKeys(ctx, serverName, requests)
keys, err := d.Client.GetServerKeys(ctx, serverName)
if err != nil {
return nil, err
}
results := map[PublicKeyRequest]PublicKeyLookupResult{}
for _, keys := range serverKeys {
// Check that the keys are valid for the server.
checks, _, _ := CheckKeys(serverName, time.Unix(0, 0), keys, nil)
if !checks.AllChecksOK {
return nil, fmt.Errorf("gomatrixserverlib: key response direct from %q failed checks", serverName)
}
// TODO: What happens if the same key ID appears in multiple responses?
// We should probably take the response with the highest valid_until_ts.
results := map[PublicKeyRequest]PublicKeyLookupResult{}
// TODO (matrix-org/dendrite#345): What happens if the same key ID
// appears in multiple responses? We should probably reject the response.
mapServerKeysToPublicKeyLookupResult(keys, results)
}
return results, nil
}

9
vendor/src/github.com/matrix-org/gomatrixserverlib/keyring_test.go vendored
View File

@ -36,6 +36,10 @@ var testKeys = `{
type testKeyDatabase struct{}
func (db testKeyDatabase) FetcherName() string {
return "testKeyDatabase"
}
func (db *testKeyDatabase) FetchKeys(
ctx context.Context, requests map[PublicKeyRequest]Timestamp,
) (map[PublicKeyRequest]PublicKeyLookupResult, error) {
@ -151,6 +155,11 @@ func (e *erroringKeyDatabaseError) Error() string { return "An error with the ke
var testErrorFetch = erroringKeyDatabaseError(1)
var testErrorStore = erroringKeyDatabaseError(2)
// FetcherName implements KeyFetcher
func (e erroringKeyDatabase) FetcherName() string {
return "ErroringKeyDatabase"
}
func (e *erroringKeyDatabase) FetchKeys(
ctx context.Context, requests map[PublicKeyRequest]Timestamp,
) (map[PublicKeyRequest]PublicKeyLookupResult, error) {

20
vendor/src/github.com/tidwall/gjson/LICENSE vendored Normal file
View File

@ -0,0 +1,20 @@
The MIT License (MIT)
Copyright (c) 2016 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

373
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@ -0,0 +1,373 @@
<p align="center">
<img
src="logo.png"
width="240" height="78" border="0" alt="GJSON">
<br>
<a href="https://travis-ci.org/tidwall/gjson"><img src="https://img.shields.io/travis/tidwall/gjson.svg?style=flat-square" alt="Build Status"></a>
<a href="https://godoc.org/github.com/tidwall/gjson"><img src="https://img.shields.io/badge/api-reference-blue.svg?style=flat-square" alt="GoDoc"></a>
<a href="http://tidwall.com/gjson-play"><img src="https://img.shields.io/badge/play-ground-orange.svg?style=flat-square" alt="GJSON Playground"></a>
</p>
<p align="center">get a json value quickly</a></p>
GJSON is a Go package that provides a [fast](#performance) and [simple](#get-a-value) way to get values from a json document.
It has features such as [one line retrieval](#get-a-value), [dot notation paths](#path-syntax), [iteration](#iterate-through-an-object-or-array).
Getting Started
===============
## Installing
To start using GJSON, install Go and run `go get`:
```sh
$ go get -u github.com/tidwall/gjson
```
This will retrieve the library.
## Get a value
Get searches json for the specified path. A path is in dot syntax, such as "name.last" or "age". This function expects that the json is well-formed. Bad json will not panic, but it may return back unexpected results. When the value is found it's returned immediately.
```go
package main
import "github.com/tidwall/gjson"
const json = `{"name":{"first":"Janet","last":"Prichard"},"age":47}`
func main() {
value := gjson.Get(json, "name.last")
println(value.String())
}
```
This will print:
```
Prichard
```
*There's also the [GetMany](#get-multiple-values-at-once) function to get multiple values at once, and [GetBytes](#working-with-bytes) for working with JSON byte slices.*
## Path Syntax
A path is a series of keys separated by a dot.
A key may contain special wildcard characters '\*' and '?'.
To access an array value use the index as the key.
To get the number of elements in an array or to access a child path, use the '#' character.
The dot and wildcard characters can be escaped with '\\'.
```json
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"first": "Dale", "last": "Murphy", "age": 44},
{"first": "Roger", "last": "Craig", "age": 68},
{"first": "Jane", "last": "Murphy", "age": 47}
]
}
```
```
"name.last" >> "Anderson"
"age" >> 37
"children" >> ["Sara","Alex","Jack"]
"children.#" >> 3
"children.1" >> "Alex"
"child*.2" >> "Jack"
"c?ildren.0" >> "Sara"
"fav\.movie" >> "Deer Hunter"
"friends.#.first" >> ["Dale","Roger","Jane"]
"friends.1.last" >> "Craig"
```
You can also query an array for the first match by using `#[...]`, or find all matches with `#[...]#`.
Queries support the `==`, `!=`, `<`, `<=`, `>`, `>=` comparison operators and the simple pattern matching `%` operator.
```
friends.#[last=="Murphy"].first >> "Dale"
friends.#[last=="Murphy"]#.first >> ["Dale","Jane"]
friends.#[age>45]#.last >> ["Craig","Murphy"]
friends.#[first%"D*"].last >> "Murphy"
```
## Result Type
GJSON supports the json types `string`, `number`, `bool`, and `null`.
Arrays and Objects are returned as their raw json types.
The `Result` type holds one of these:
```
bool, for JSON booleans
float64, for JSON numbers
string, for JSON string literals
nil, for JSON null
```
To directly access the value:
```go
result.Type // can be String, Number, True, False, Null, or JSON
result.Str // holds the string
result.Num // holds the float64 number
result.Raw // holds the raw json
result.Index // index of raw value in original json, zero means index unknown
```
There are a variety of handy functions that work on a result:
```go
result.Exists() bool
result.Value() interface{}
result.Int() int64
result.Uint() uint64
result.Float() float64
result.String() string
result.Bool() bool
result.Time() time.Time
result.Array() []gjson.Result
result.Map() map[string]gjson.Result
result.Get(path string) Result
result.ForEach(iterator func(key, value Result) bool)
result.Less(token Result, caseSensitive bool) bool
```
The `result.Value()` function returns an `interface{}` which requires type assertion and is one of the following Go types:
The `result.Array()` function returns back an array of values.
If the result represents a non-existent value, then an empty array will be returned.
If the result is not a JSON array, the return value will be an array containing one result.
```go
boolean >> bool
number >> float64
string >> string
null >> nil
array >> []interface{}
object >> map[string]interface{}
```
## Get nested array values
Suppose you want all the last names from the following json:
```json
{
"programmers": [
{
"firstName": "Janet",
"lastName": "McLaughlin",
}, {
"firstName": "Elliotte",
"lastName": "Hunter",
}, {
"firstName": "Jason",
"lastName": "Harold",
}
]
}
```
You would use the path "programmers.#.lastName" like such:
```go
result := gjson.Get(json, "programmers.#.lastName")
for _, name := range result.Array() {
println(name.String())
}
```
You can also query an object inside an array:
```go
name := gjson.Get(json, `programmers.#[lastName="Hunter"].firstName`)
println(name.String()) // prints "Elliotte"
```
## Iterate through an object or array
The `ForEach` function allows for quickly iterating through an object or array.
The key and value are passed to the iterator function for objects.
Only the value is passed for arrays.
Returning `false` from an iterator will stop iteration.
```go
result := gjson.Get(json, "programmers")
result.ForEach(func(key, value gjson.Result) bool {
println(value.String())
return true // keep iterating
})
```
## Simple Parse and Get
There's a `Parse(json)` function that will do a simple parse, and `result.Get(path)` that will search a result.
For example, all of these will return the same result:
```go
gjson.Parse(json).Get("name").Get("last")
gjson.Get(json, "name").Get("last")
gjson.Get(json, "name.last")
```
## Check for the existence of a value
Sometimes you just want to know if a value exists.
```go
value := gjson.Get(json, "name.last")
if !value.Exists() {
println("no last name")
} else {
println(value.String())
}
// Or as one step
if gjson.Get(json, "name.last").Exists() {
println("has a last name")
}
```
## Unmarshal to a map
To unmarshal to a `map[string]interface{}`:
```go
m, ok := gjson.Parse(json).Value().(map[string]interface{})
if !ok {
// not a map
}
```
## Working with Bytes
If your JSON is contained in a `[]byte` slice, there's the [GetBytes](https://godoc.org/github.com/tidwall/gjson#GetBytes) function. This is preferred over `Get(string(data), path)`.
```go
var json []byte = ...
result := gjson.GetBytes(json, path)
```
If you are using the `gjson.GetBytes(json, path)` function and you want to avoid converting `result.Raw` to a `[]byte`, then you can use this pattern:
```go
var json []byte = ...
result := gjson.GetBytes(json, path)
var raw []byte
if result.Index > 0 {
raw = json[result.Index:result.Index+len(result.Raw)]
} else {
raw = []byte(result.Raw)
}
```
This is a best-effort no allocation sub slice of the original json. This method utilizes the `result.Index` field, which is the position of the raw data in the original json. It's possible that the value of `result.Index` equals zero, in which case the `result.Raw` is converted to a `[]byte`.
## Get multiple values at once
The `GetMany` function can be used to get multiple values at the same time, and is optimized to scan over a JSON payload once.
```go
results := gjson.GetMany(json, "name.first", "name.last", "age")
```
The return value is a `[]Result`, which will always contain exactly the same number of items as the input paths.
## Performance
Benchmarks of GJSON alongside [encoding/json](https://golang.org/pkg/encoding/json/),
[ffjson](https://github.com/pquerna/ffjson),
[EasyJSON](https://github.com/mailru/easyjson),
[jsonparser](https://github.com/buger/jsonparser),
and [json-iterator](https://github.com/json-iterator/go)
```
BenchmarkGJSONGet-8 3000000 372 ns/op 0 B/op 0 allocs/op
BenchmarkGJSONUnmarshalMap-8 900000 4154 ns/op 1920 B/op 26 allocs/op
BenchmarkJSONUnmarshalMap-8 600000 9019 ns/op 3048 B/op 69 allocs/op
BenchmarkJSONDecoder-8 300000 14120 ns/op 4224 B/op 184 allocs/op
BenchmarkFFJSONLexer-8 1500000 3111 ns/op 896 B/op 8 allocs/op
BenchmarkEasyJSONLexer-8 3000000 887 ns/op 613 B/op 6 allocs/op
BenchmarkJSONParserGet-8 3000000 499 ns/op 21 B/op 0 allocs/op
BenchmarkJSONIterator-8 3000000 812 ns/op 544 B/op 9 allocs/op
```
Benchmarks for the `GetMany` function:
```
BenchmarkGJSONGetMany4Paths-8 4000000 303 ns/op 112 B/op 0 allocs/op
BenchmarkGJSONGetMany8Paths-8 8000000 208 ns/op 56 B/op 0 allocs/op
BenchmarkGJSONGetMany16Paths-8 16000000 156 ns/op 56 B/op 0 allocs/op
BenchmarkGJSONGetMany32Paths-8 32000000 127 ns/op 64 B/op 0 allocs/op
BenchmarkGJSONGetMany64Paths-8 64000000 117 ns/op 64 B/op 0 allocs/op
BenchmarkGJSONGetMany128Paths-8 128000000 109 ns/op 64 B/op 0 allocs/op
```
JSON document used:
```json
{
"widget": {
"debug": "on",
"window": {
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500
},
"image": {
"src": "Images/Sun.png",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
},
"text": {
"data": "Click Here",
"size": 36,
"style": "bold",
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}
}
}
```
Each operation was rotated though one of the following search paths:
```
widget.window.name
widget.image.hOffset
widget.text.onMouseUp
```
For the `GetMany` benchmarks these paths are used:
```
widget.window.name
widget.image.hOffset
widget.text.onMouseUp
widget.window.title
widget.image.alignment
widget.text.style
widget.window.height
widget.image.src
widget.text.data
widget.text.size
```
*These benchmarks were run on a MacBook Pro 15" 2.8 GHz Intel Core i7 using Go 1.8 and can be be found [here](https://github.com/tidwall/gjson-benchmarks).*
## Contact
Josh Baker [@tidwall](http://twitter.com/tidwall)
## License
GJSON source code is available under the MIT [License](/LICENSE).

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@ -0,0 +1,20 @@
The MIT License (MIT)
Copyright (c) 2016 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

32
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@ -0,0 +1,32 @@
Match
=====
<a href="https://travis-ci.org/tidwall/match"><img src="https://img.shields.io/travis/tidwall/match.svg?style=flat-square" alt="Build Status"></a>
<a href="https://godoc.org/github.com/tidwall/match"><img src="https://img.shields.io/badge/api-reference-blue.svg?style=flat-square" alt="GoDoc"></a>
Match is a very simple pattern matcher where '*' matches on any
number characters and '?' matches on any one character.
Installing
----------
```
go get -u github.com/tidwall/match
```
Example
-------
```go
match.Match("hello", "*llo")
match.Match("jello", "?ello")
match.Match("hello", "h*o")
```
Contact
-------
Josh Baker [@tidwall](http://twitter.com/tidwall)
License
-------
Redcon source code is available under the MIT [License](/LICENSE).

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@ -0,0 +1,192 @@
// Match provides a simple pattern matcher with unicode support.
package match
import "unicode/utf8"
// Match returns true if str matches pattern. This is a very
// simple wildcard match where '*' matches on any number characters
// and '?' matches on any one character.
// pattern:
// { term }
// term:
// '*' matches any sequence of non-Separator characters
// '?' matches any single non-Separator character
// c matches character c (c != '*', '?', '\\')
// '\\' c matches character c
//
func Match(str, pattern string) bool {
if pattern == "*" {
return true
}
return deepMatch(str, pattern)
}
func deepMatch(str, pattern string) bool {
for len(pattern) > 0 {
if pattern[0] > 0x7f {
return deepMatchRune(str, pattern)
}
switch pattern[0] {
default:
if len(str) == 0 {
return false
}
if str[0] > 0x7f {
return deepMatchRune(str, pattern)
}
if str[0] != pattern[0] {
return false
}
case '?':
if len(str) == 0 {
return false
}
case '*':
return deepMatch(str, pattern[1:]) ||
(len(str) > 0 && deepMatch(str[1:], pattern))
}
str = str[1:]
pattern = pattern[1:]
}
return len(str) == 0 && len(pattern) == 0
}
func deepMatchRune(str, pattern string) bool {
var sr, pr rune
var srsz, prsz int
// read the first rune ahead of time
if len(str) > 0 {
if str[0] > 0x7f {
sr, srsz = utf8.DecodeRuneInString(str)
} else {
sr, srsz = rune(str[0]), 1
}
} else {
sr, srsz = utf8.RuneError, 0
}
if len(pattern) > 0 {
if pattern[0] > 0x7f {
pr, prsz = utf8.DecodeRuneInString(pattern)
} else {
pr, prsz = rune(pattern[0]), 1
}
} else {
pr, prsz = utf8.RuneError, 0
}
// done reading
for pr != utf8.RuneError {
switch pr {
default:
if srsz == utf8.RuneError {
return false
}
if sr != pr {
return false
}
case '?':
if srsz == utf8.RuneError {
return false
}
case '*':
return deepMatchRune(str, pattern[prsz:]) ||
(srsz > 0 && deepMatchRune(str[srsz:], pattern))
}
str = str[srsz:]
pattern = pattern[prsz:]
// read the next runes
if len(str) > 0 {
if str[0] > 0x7f {
sr, srsz = utf8.DecodeRuneInString(str)
} else {
sr, srsz = rune(str[0]), 1
}
} else {
sr, srsz = utf8.RuneError, 0
}
if len(pattern) > 0 {
if pattern[0] > 0x7f {
pr, prsz = utf8.DecodeRuneInString(pattern)
} else {
pr, prsz = rune(pattern[0]), 1
}
} else {
pr, prsz = utf8.RuneError, 0
}
// done reading
}
return srsz == 0 && prsz == 0
}
var maxRuneBytes = func() []byte {
b := make([]byte, 4)
if utf8.EncodeRune(b, '\U0010FFFF') != 4 {
panic("invalid rune encoding")
}
return b
}()
// Allowable parses the pattern and determines the minimum and maximum allowable
// values that the pattern can represent.
// When the max cannot be determined, 'true' will be returned
// for infinite.
func Allowable(pattern string) (min, max string) {
if pattern == "" || pattern[0] == '*' {
return "", ""
}
minb := make([]byte, 0, len(pattern))
maxb := make([]byte, 0, len(pattern))
var wild bool
for i := 0; i < len(pattern); i++ {
if pattern[i] == '*' {
wild = true
break
}
if pattern[i] == '?' {
minb = append(minb, 0)
maxb = append(maxb, maxRuneBytes...)
} else {
minb = append(minb, pattern[i])
maxb = append(maxb, pattern[i])
}
}
if wild {
r, n := utf8.DecodeLastRune(maxb)
if r != utf8.RuneError {
if r < utf8.MaxRune {
r++
if r > 0x7f {
b := make([]byte, 4)
nn := utf8.EncodeRune(b, r)
maxb = append(maxb[:len(maxb)-n], b[:nn]...)
} else {
maxb = append(maxb[:len(maxb)-n], byte(r))
}
}
}
}
return string(minb), string(maxb)
/*
return
if wild {
r, n := utf8.DecodeLastRune(maxb)
if r != utf8.RuneError {
if r < utf8.MaxRune {
infinite = true
} else {
r++
if r > 0x7f {
b := make([]byte, 4)
nn := utf8.EncodeRune(b, r)
maxb = append(maxb[:len(maxb)-n], b[:nn]...)
} else {
maxb = append(maxb[:len(maxb)-n], byte(r))
}
}
}
}
return string(minb), string(maxb), infinite
*/
}

408
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@ -0,0 +1,408 @@
package match
import (
"fmt"
"math/rand"
"testing"
"time"
"unicode/utf8"
)
func TestMatch(t *testing.T) {
if !Match("hello world", "hello world") {
t.Fatal("fail")
}
if Match("hello world", "jello world") {
t.Fatal("fail")
}
if !Match("hello world", "hello*") {
t.Fatal("fail")
}
if Match("hello world", "jello*") {
t.Fatal("fail")
}
if !Match("hello world", "hello?world") {
t.Fatal("fail")
}
if Match("hello world", "jello?world") {
t.Fatal("fail")
}
if !Match("hello world", "he*o?world") {
t.Fatal("fail")
}
if !Match("hello world", "he*o?wor*") {
t.Fatal("fail")
}
if !Match("hello world", "he*o?*r*") {
t.Fatal("fail")
}
if !Match("的情况下解析一个", "*") {
t.Fatal("fail")
}
if !Match("的情况下解析一个", "*况下*") {
t.Fatal("fail")
}
if !Match("的情况下解析一个", "*况?*") {
t.Fatal("fail")
}
if !Match("的情况下解析一个", "的情况?解析一个") {
t.Fatal("fail")
}
}
// TestWildcardMatch - Tests validate the logic of wild card matching.
// `WildcardMatch` supports '*' and '?' wildcards.
// Sample usage: In resource matching for folder policy validation.
func TestWildcardMatch(t *testing.T) {
testCases := []struct {
pattern string
text string
matched bool
}{
// Test case - 1.
// Test case with pattern containing key name with a prefix. Should accept the same text without a "*".
{
pattern: "my-folder/oo*",
text: "my-folder/oo",
matched: true,
},
// Test case - 2.
// Test case with "*" at the end of the pattern.
{
pattern: "my-folder/In*",
text: "my-folder/India/Karnataka/",
matched: true,
},
// Test case - 3.
// Test case with prefixes shuffled.
// This should fail.
{
pattern: "my-folder/In*",
text: "my-folder/Karnataka/India/",
matched: false,
},
// Test case - 4.
// Test case with text expanded to the wildcards in the pattern.
{
pattern: "my-folder/In*/Ka*/Ban",
text: "my-folder/India/Karnataka/Ban",
matched: true,
},
// Test case - 5.
// Test case with the keyname part is repeated as prefix several times.
// This is valid.
{
pattern: "my-folder/In*/Ka*/Ban",
text: "my-folder/India/Karnataka/Ban/Ban/Ban/Ban/Ban",
matched: true,
},
// Test case - 6.
// Test case to validate that `*` can be expanded into multiple prefixes.
{
pattern: "my-folder/In*/Ka*/Ban",
text: "my-folder/India/Karnataka/Area1/Area2/Area3/Ban",
matched: true,
},
// Test case - 7.
// Test case to validate that `*` can be expanded into multiple prefixes.
{
pattern: "my-folder/In*/Ka*/Ban",
text: "my-folder/India/State1/State2/Karnataka/Area1/Area2/Area3/Ban",
matched: true,
},
// Test case - 8.
// Test case where the keyname part of the pattern is expanded in the text.
{
pattern: "my-folder/In*/Ka*/Ban",
text: "my-folder/India/Karnataka/Bangalore",
matched: false,
},
// Test case - 9.
// Test case with prefixes and wildcard expanded for all "*".
{
pattern: "my-folder/In*/Ka*/Ban*",
text: "my-folder/India/Karnataka/Bangalore",
matched: true,
},
// Test case - 10.
// Test case with keyname part being a wildcard in the pattern.
{pattern: "my-folder/*",
text: "my-folder/India",
matched: true,
},
// Test case - 11.
{
pattern: "my-folder/oo*",
text: "my-folder/odo",
matched: false,
},
// Test case with pattern containing wildcard '?'.
// Test case - 12.
// "my-folder?/" matches "my-folder1/", "my-folder2/", "my-folder3" etc...
// doesn't match "myfolder/".
{
pattern: "my-folder?/abc*",
text: "myfolder/abc",
matched: false,
},
// Test case - 13.
{
pattern: "my-folder?/abc*",
text: "my-folder1/abc",
matched: true,
},
// Test case - 14.
{
pattern: "my-?-folder/abc*",
text: "my--folder/abc",
matched: false,
},
// Test case - 15.
{
pattern: "my-?-folder/abc*",
text: "my-1-folder/abc",
matched: true,
},
// Test case - 16.
{
pattern: "my-?-folder/abc*",
text: "my-k-folder/abc",
matched: true,
},
// Test case - 17.
{
pattern: "my??folder/abc*",
text: "myfolder/abc",
matched: false,
},
// Test case - 18.
{
pattern: "my??folder/abc*",
text: "my4afolder/abc",
matched: true,
},
// Test case - 19.
{
pattern: "my-folder?abc*",
text: "my-folder/abc",
matched: true,
},
// Test case 20-21.
// '?' matches '/' too. (works with s3).
// This is because the namespace is considered flat.
// "abc?efg" matches both "abcdefg" and "abc/efg".
{
pattern: "my-folder/abc?efg",
text: "my-folder/abcdefg",
matched: true,
},
{
pattern: "my-folder/abc?efg",
text: "my-folder/abc/efg",
matched: true,
},
// Test case - 22.
{
pattern: "my-folder/abc????",
text: "my-folder/abc",
matched: false,
},
// Test case - 23.
{
pattern: "my-folder/abc????",
text: "my-folder/abcde",
matched: false,
},
// Test case - 24.
{
pattern: "my-folder/abc????",
text: "my-folder/abcdefg",
matched: true,
},
// Test case 25-26.
// test case with no '*'.
{
pattern: "my-folder/abc?",
text: "my-folder/abc",
matched: false,
},
{
pattern: "my-folder/abc?",
text: "my-folder/abcd",
matched: true,
},
{
pattern: "my-folder/abc?",
text: "my-folder/abcde",
matched: false,
},
// Test case 27.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnop",
matched: false,
},
// Test case 28.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnopqrst/mnopqr",
matched: true,
},
// Test case 29.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnopqrst/mnopqrs",
matched: true,
},
// Test case 30.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnop",
matched: false,
},
// Test case 31.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnopq",
matched: true,
},
// Test case 32.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnopqr",
matched: true,
},
// Test case 33.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopqand",
matched: true,
},
// Test case 34.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopand",
matched: false,
},
// Test case 35.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopqand",
matched: true,
},
// Test case 36.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mn",
matched: false,
},
// Test case 37.
{
pattern: "my-folder/mnop*?",
text: "my-folder/mnopqrst/mnopqrs",
matched: true,
},
// Test case 38.
{
pattern: "my-folder/mnop*??",
text: "my-folder/mnopqrst",
matched: true,
},
// Test case 39.
{
pattern: "my-folder/mnop*qrst",
text: "my-folder/mnopabcdegqrst",
matched: true,
},
// Test case 40.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopqand",
matched: true,
},
// Test case 41.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopand",
matched: false,
},
// Test case 42.
{
pattern: "my-folder/mnop*?and?",
text: "my-folder/mnopqanda",
matched: true,
},
// Test case 43.
{
pattern: "my-folder/mnop*?and",
text: "my-folder/mnopqanda",
matched: false,
},
// Test case 44.
{
pattern: "my-?-folder/abc*",
text: "my-folder/mnopqanda",
matched: false,
},
}
// Iterating over the test cases, call the function under test and asert the output.
for i, testCase := range testCases {
actualResult := Match(testCase.text, testCase.pattern)
if testCase.matched != actualResult {
t.Errorf("Test %d: Expected the result to be `%v`, but instead found it to be `%v`", i+1, testCase.matched, actualResult)
}
}
}
func TestRandomInput(t *testing.T) {
rand.Seed(time.Now().UnixNano())
b1 := make([]byte, 100)
b2 := make([]byte, 100)
for i := 0; i < 1000000; i++ {
if _, err := rand.Read(b1); err != nil {
t.Fatal(err)
}
if _, err := rand.Read(b2); err != nil {
t.Fatal(err)
}
Match(string(b1), string(b2))
}
}
func testAllowable(pattern, exmin, exmax string) error {
min, max := Allowable(pattern)
if min != exmin || max != exmax {
return fmt.Errorf("expected '%v'/'%v', got '%v'/'%v'",
exmin, exmax, min, max)
}
return nil
}
func TestAllowable(t *testing.T) {
if err := testAllowable("hell*", "hell", "helm"); err != nil {
t.Fatal(err)
}
if err := testAllowable("hell?", "hell"+string(0), "hell"+string(utf8.MaxRune)); err != nil {
t.Fatal(err)
}
if err := testAllowable("h解析ell*", "h解析ell", "h解析elm"); err != nil {
t.Fatal(err)
}
if err := testAllowable("h解*ell*", "h解", "h觤"); err != nil {
t.Fatal(err)
}
}
func BenchmarkAscii(t *testing.B) {
for i := 0; i < t.N; i++ {
if !Match("hello", "hello") {
t.Fatal("fail")
}
}
}
func BenchmarkUnicode(t *testing.B) {
for i := 0; i < t.N; i++ {
if !Match("h情llo", "h情llo") {
t.Fatal("fail")
}
}
}

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The MIT License (MIT)
Copyright (c) 2016 Josh Baker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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<p align="center">
<img
src="logo.png"
width="240" height="78" border="0" alt="SJSON">
<br>
<a href="https://travis-ci.org/tidwall/sjson"><img src="https://img.shields.io/travis/tidwall/sjson.svg?style=flat-square" alt="Build Status"></a>
<a href="https://godoc.org/github.com/tidwall/sjson"><img src="https://img.shields.io/badge/api-reference-blue.svg?style=flat-square" alt="GoDoc"></a>
</p>
<p align="center">set a json value quickly</a></p>
SJSON is a Go package that provides a [very fast](#performance) and simple way to set a value in a json document. The purpose for this library is to provide efficient json updating for the [SummitDB](https://github.com/tidwall/summitdb) project.
For quickly retrieving json values check out [GJSON](https://github.com/tidwall/gjson).
For a command line interface check out [JSONed](https://github.com/tidwall/jsoned).
Getting Started
===============
Installing
----------
To start using SJSON, install Go and run `go get`:
```sh
$ go get -u github.com/tidwall/sjson
```
This will retrieve the library.
Set a value
-----------
Set sets the value for the specified path.
A path is in dot syntax, such as "name.last" or "age".
This function expects that the json is well-formed and validated.
Invalid json will not panic, but it may return back unexpected results.
Invalid paths may return an error.
```go
package main
import "github.com/tidwall/sjson"
const json = `{"name":{"first":"Janet","last":"Prichard"},"age":47}`
func main() {
value, _ := sjson.Set(json, "name.last", "Anderson")
println(value)
}
```
This will print:
```json
{"name":{"first":"Janet","last":"Anderson"},"age":47}
```
Path syntax
-----------
A path is a series of keys separated by a dot.
The dot and colon characters can be escaped with '\'.
```json
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"first": "James", "last": "Murphy"},
{"first": "Roger", "last": "Craig"}
]
}
```
```
"name.last" >> "Anderson"
"age" >> 37
"children.1" >> "Alex"
"friends.1.last" >> "Craig"
```
The `-1` key can be used to append a value to an existing array:
```
"children.-1" >> appends a new value to the end of the children array
```
Normally number keys are used to modify arrays, but it's possible to force a numeric object key by using the colon character:
```json
{
"users":{
"2313":{"name":"Sara"},
"7839":{"name":"Andy"}
}
}
```
A colon path would look like:
```
"users.:2313.name" >> "Sara"
```
Supported types
---------------
Pretty much any type is supported:
```go
sjson.Set(`{"key":true}`, "key", nil)
sjson.Set(`{"key":true}`, "key", false)
sjson.Set(`{"key":true}`, "key", 1)
sjson.Set(`{"key":true}`, "key", 10.5)
sjson.Set(`{"key":true}`, "key", "hello")
sjson.Set(`{"key":true}`, "key", map[string]interface{}{"hello":"world"})
```
When a type is not recognized, SJSON will fallback to the `encoding/json` Marshaller.
Examples
--------
Set a value from empty document:
```go
value, _ := sjson.Set("", "name", "Tom")
println(value)
// Output:
// {"name":"Tom"}
```
Set a nested value from empty document:
```go
value, _ := sjson.Set("", "name.last", "Anderson")
println(value)
// Output:
// {"name":{"last":"Anderson"}}
```
Set a new value:
```go
value, _ := sjson.Set(`{"name":{"last":"Anderson"}}`, "name.first", "Sara")
println(value)
// Output:
// {"name":{"first":"Sara","last":"Anderson"}}
```
Update an existing value:
```go
value, _ := sjson.Set(`{"name":{"last":"Anderson"}}`, "name.last", "Smith")
println(value)
// Output:
// {"name":{"last":"Smith"}}
```
Set a new array value:
```go
value, _ := sjson.Set(`{"friends":["Andy","Carol"]}`, "friends.2", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol","Sara"]
```
Append an array value by using the `-1` key in a path:
```go
value, _ := sjson.Set(`{"friends":["Andy","Carol"]}`, "friends.-1", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol","Sara"]
```
Append an array value that is past the end:
```go
value, _ := sjson.Set(`{"friends":["Andy","Carol"]}`, "friends.4", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol",null,null,"Sara"]
```
Delete a value:
```go
value, _ := sjson.Delete(`{"name":{"first":"Sara","last":"Anderson"}}`, "name.first")
println(value)
// Output:
// {"name":{"last":"Anderson"}}
```
Delete an array value:
```go
value, _ := sjson.Delete(`{"friends":["Andy","Carol"]}`, "friends.1")
println(value)
// Output:
// {"friends":["Andy"]}
```
Delete the last array value:
```go
value, _ := sjson.Delete(`{"friends":["Andy","Carol"]}`, "friends.-1")
println(value)
// Output:
// {"friends":["Andy"]}
```
## Performance
Benchmarks of SJSON alongside [encoding/json](https://golang.org/pkg/encoding/json/),
[ffjson](https://github.com/pquerna/ffjson),
[EasyJSON](https://github.com/mailru/easyjson),
and [Gabs](https://github.com/Jeffail/gabs)
```
Benchmark_SJSON-8 3000000 805 ns/op 1077 B/op 3 allocs/op
Benchmark_SJSON_ReplaceInPlace-8 3000000 449 ns/op 0 B/op 0 allocs/op
Benchmark_JSON_Map-8 300000 21236 ns/op 6392 B/op 150 allocs/op
Benchmark_JSON_Struct-8 300000 14691 ns/op 1789 B/op 24 allocs/op
Benchmark_Gabs-8 300000 21311 ns/op 6752 B/op 150 allocs/op
Benchmark_FFJSON-8 300000 17673 ns/op 3589 B/op 47 allocs/op
Benchmark_EasyJSON-8 1500000 3119 ns/op 1061 B/op 13 allocs/op
```
JSON document used:
```json
{
"widget": {
"debug": "on",
"window": {
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500
},
"image": {
"src": "Images/Sun.png",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
},
"text": {
"data": "Click Here",
"size": 36,
"style": "bold",
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}
}
}
```
Each operation was rotated though one of the following search paths:
```
widget.window.name
widget.image.hOffset
widget.text.onMouseUp
```
*These benchmarks were run on a MacBook Pro 15" 2.8 GHz Intel Core i7 using Go 1.7.*
## Contact
Josh Baker [@tidwall](http://twitter.com/tidwall)
## License
SJSON source code is available under the MIT [License](/LICENSE).

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// Package sjson provides setting json values.
package sjson
import (
jsongo "encoding/json"
"reflect"
"strconv"
"unsafe"
"github.com/tidwall/gjson"
)
type errorType struct {
msg string
}
func (err *errorType) Error() string {
return err.msg
}
// Options represents additional options for the Set and Delete functions.
type Options struct {
// Optimistic is a hint that the value likely exists which
// allows for the sjson to perform a fast-track search and replace.
Optimistic bool
// ReplaceInPlace is a hint to replace the input json rather than
// allocate a new json byte slice. When this field is specified
// the input json will not longer be valid and it should not be used
// In the case when the destination slice doesn't have enough free
// bytes to replace the data in place, a new bytes slice will be
// created under the hood.
// The Optimistic flag must be set to true and the input must be a
// byte slice in order to use this field.
ReplaceInPlace bool
}
type pathResult struct {
part string // current key part
path string // remaining path
force bool // force a string key
more bool // there is more path to parse
}
func parsePath(path string) (pathResult, error) {
var r pathResult
if len(path) > 0 && path[0] == ':' {
r.force = true
path = path[1:]
}
for i := 0; i < len(path); i++ {
if path[i] == '.' {
r.part = path[:i]
r.path = path[i+1:]
r.more = true
return r, nil
}
if path[i] == '*' || path[i] == '?' {
return r, &errorType{"wildcard characters not allowed in path"}
} else if path[i] == '#' {
return r, &errorType{"array access character not allowed in path"}
}
if path[i] == '\\' {
// go into escape mode. this is a slower path that
// strips off the escape character from the part.
epart := []byte(path[:i])
i++
if i < len(path) {
epart = append(epart, path[i])
i++
for ; i < len(path); i++ {
if path[i] == '\\' {
i++
if i < len(path) {
epart = append(epart, path[i])
}
continue
} else if path[i] == '.' {
r.part = string(epart)
r.path = path[i+1:]
r.more = true
return r, nil
} else if path[i] == '*' || path[i] == '?' {
return r, &errorType{
"wildcard characters not allowed in path"}
} else if path[i] == '#' {
return r, &errorType{
"array access character not allowed in path"}
}
epart = append(epart, path[i])
}
}
// append the last part
r.part = string(epart)
return r, nil
}
}
r.part = path
return r, nil
}
func mustMarshalString(s string) bool {
for i := 0; i < len(s); i++ {
if s[i] < ' ' || s[i] > 0x7f || s[i] == '"' {
return true
}
}
return false
}
// appendStringify makes a json string and appends to buf.
func appendStringify(buf []byte, s string) []byte {
if mustMarshalString(s) {
b, _ := jsongo.Marshal(s)
return append(buf, b...)
}
buf = append(buf, '"')
buf = append(buf, s...)
buf = append(buf, '"')
return buf
}
// appendBuild builds a json block from a json path.
func appendBuild(buf []byte, array bool, paths []pathResult, raw string,
stringify bool) []byte {
if !array {
buf = appendStringify(buf, paths[0].part)
buf = append(buf, ':')
}
if len(paths) > 1 {
n, numeric := atoui(paths[1])
if numeric || (!paths[1].force && paths[1].part == "-1") {
buf = append(buf, '[')
buf = appendRepeat(buf, "null,", n)
buf = appendBuild(buf, true, paths[1:], raw, stringify)
buf = append(buf, ']')
} else {
buf = append(buf, '{')
buf = appendBuild(buf, false, paths[1:], raw, stringify)
buf = append(buf, '}')
}
} else {
if stringify {
buf = appendStringify(buf, raw)
} else {
buf = append(buf, raw...)
}
}
return buf
}
// atoui does a rip conversion of string -> unigned int.
func atoui(r pathResult) (n int, ok bool) {
if r.force {
return 0, false
}
for i := 0; i < len(r.part); i++ {
if r.part[i] < '0' || r.part[i] > '9' {
return 0, false
}
n = n*10 + int(r.part[i]-'0')
}
return n, true
}
// appendRepeat repeats string "n" times and appends to buf.
func appendRepeat(buf []byte, s string, n int) []byte {
for i := 0; i < n; i++ {
buf = append(buf, s...)
}
return buf
}
// trim does a rip trim
func trim(s string) string {
for len(s) > 0 {
if s[0] <= ' ' {
s = s[1:]
continue
}
break
}
for len(s) > 0 {
if s[len(s)-1] <= ' ' {
s = s[:len(s)-1]
continue
}
break
}
return s
}
// deleteTailItem deletes the previous key or comma.
func deleteTailItem(buf []byte) ([]byte, bool) {
loop:
for i := len(buf) - 1; i >= 0; i-- {
// look for either a ',',':','['
switch buf[i] {
case '[':
return buf, true
case ',':
return buf[:i], false
case ':':
// delete tail string
i--
for ; i >= 0; i-- {
if buf[i] == '"' {
i--
for ; i >= 0; i-- {
if buf[i] == '"' {
i--
if i >= 0 && i == '\\' {
i--
continue
}
for ; i >= 0; i-- {
// look for either a ',','{'
switch buf[i] {
case '{':
return buf[:i+1], true
case ',':
return buf[:i], false
}
}
}
}
break
}
}
break loop
}
}
return buf, false
}
var errNoChange = &errorType{"no change"}
func appendRawPaths(buf []byte, jstr string, paths []pathResult, raw string,
stringify, del bool) ([]byte, error) {
var err error
var res gjson.Result
var found bool
if del {
if paths[0].part == "-1" && !paths[0].force {
res = gjson.Get(jstr, "#")
if res.Int() > 0 {
res = gjson.Get(jstr, strconv.FormatInt(int64(res.Int()-1), 10))
found = true
}
}
}
if !found {
res = gjson.Get(jstr, paths[0].part)
}
if res.Index > 0 {
if len(paths) > 1 {
buf = append(buf, jstr[:res.Index]...)
buf, err = appendRawPaths(buf, res.Raw, paths[1:], raw,
stringify, del)
if err != nil {
return nil, err
}
buf = append(buf, jstr[res.Index+len(res.Raw):]...)
return buf, nil
}
buf = append(buf, jstr[:res.Index]...)
var exidx int // additional forward stripping
if del {
var delNextComma bool
buf, delNextComma = deleteTailItem(buf)
if delNextComma {
i, j := res.Index+len(res.Raw), 0
for ; i < len(jstr); i, j = i+1, j+1 {
if jstr[i] <= ' ' {
continue
}
if jstr[i] == ',' {
exidx = j + 1
}
break
}
}
} else {
if stringify {
buf = appendStringify(buf, raw)
} else {
buf = append(buf, raw...)
}
}
buf = append(buf, jstr[res.Index+len(res.Raw)+exidx:]...)
return buf, nil
}
if del {
return nil, errNoChange
}
n, numeric := atoui(paths[0])
isempty := true
for i := 0; i < len(jstr); i++ {
if jstr[i] > ' ' {
isempty = false
break
}
}
if isempty {
if numeric {
jstr = "[]"
} else {
jstr = "{}"
}
}
jsres := gjson.Parse(jstr)
if jsres.Type != gjson.JSON {
if numeric {
jstr = "[]"
} else {
jstr = "{}"
}
jsres = gjson.Parse(jstr)
}
var comma bool
for i := 1; i < len(jsres.Raw); i++ {
if jsres.Raw[i] <= ' ' {
continue
}
if jsres.Raw[i] == '}' || jsres.Raw[i] == ']' {
break
}
comma = true
break
}
switch jsres.Raw[0] {
default:
return nil, &errorType{"json must be an object or array"}
case '{':
buf = append(buf, '{')
buf = appendBuild(buf, false, paths, raw, stringify)
if comma {
buf = append(buf, ',')
}
buf = append(buf, jsres.Raw[1:]...)
return buf, nil
case '[':
var appendit bool
if !numeric {
if paths[0].part == "-1" && !paths[0].force {
appendit = true
} else {
return nil, &errorType{
"cannot set array element for non-numeric key '" +
paths[0].part + "'"}
}
}
if appendit {
njson := trim(jsres.Raw)
if njson[len(njson)-1] == ']' {
njson = njson[:len(njson)-1]
}
buf = append(buf, njson...)
if comma {
buf = append(buf, ',')
}
buf = appendBuild(buf, true, paths, raw, stringify)
buf = append(buf, ']')
return buf, nil
}
buf = append(buf, '[')
ress := jsres.Array()
for i := 0; i < len(ress); i++ {
if i > 0 {
buf = append(buf, ',')
}
buf = append(buf, ress[i].Raw...)
}
if len(ress) == 0 {
buf = appendRepeat(buf, "null,", n-len(ress))
} else {
buf = appendRepeat(buf, ",null", n-len(ress))
if comma {
buf = append(buf, ',')
}
}
buf = appendBuild(buf, true, paths, raw, stringify)
buf = append(buf, ']')
return buf, nil
}
}
func isOptimisticPath(path string) bool {
for i := 0; i < len(path); i++ {
if path[i] < '.' || path[i] > 'z' {
return false
}
if path[i] > '9' && path[i] < 'A' {
return false
}
if path[i] > 'z' {
return false
}
}
return true
}
func set(jstr, path, raw string,
stringify, del, optimistic, inplace bool) ([]byte, error) {
if path == "" {
return nil, &errorType{"path cannot be empty"}
}
if !del && optimistic && isOptimisticPath(path) {
res := gjson.Get(jstr, path)
if res.Exists() && res.Index > 0 {
sz := len(jstr) - len(res.Raw) + len(raw)
if stringify {
sz += 2
}
if inplace && sz <= len(jstr) {
if !stringify || !mustMarshalString(raw) {
jsonh := *(*reflect.StringHeader)(unsafe.Pointer(&jstr))
jsonbh := reflect.SliceHeader{
Data: jsonh.Data, Len: jsonh.Len, Cap: jsonh.Len}
jbytes := *(*[]byte)(unsafe.Pointer(&jsonbh))
if stringify {
jbytes[res.Index] = '"'
copy(jbytes[res.Index+1:], []byte(raw))
jbytes[res.Index+1+len(raw)] = '"'
copy(jbytes[res.Index+1+len(raw)+1:],
jbytes[res.Index+len(res.Raw):])
} else {
copy(jbytes[res.Index:], []byte(raw))
copy(jbytes[res.Index+len(raw):],
jbytes[res.Index+len(res.Raw):])
}
return jbytes[:sz], nil
}
return nil, nil
}
buf := make([]byte, 0, sz)
buf = append(buf, jstr[:res.Index]...)
if stringify {
buf = appendStringify(buf, raw)
} else {
buf = append(buf, raw...)
}
buf = append(buf, jstr[res.Index+len(res.Raw):]...)
return buf, nil
}
}
// parse the path, make sure that it does not contain invalid characters
// such as '#', '?', '*'
paths := make([]pathResult, 0, 4)
r, err := parsePath(path)
if err != nil {
return nil, err
}
paths = append(paths, r)
for r.more {
if r, err = parsePath(r.path); err != nil {
return nil, err
}
paths = append(paths, r)
}
njson, err := appendRawPaths(nil, jstr, paths, raw, stringify, del)
if err != nil {
return nil, err
}
return njson, nil
}
// Set sets a json value for the specified path.
// A path is in dot syntax, such as "name.last" or "age".
// This function expects that the json is well-formed, and does not validate.
// Invalid json will not panic, but it may return back unexpected results.
// An error is returned if the path is not valid.
//
// A path is a series of keys separated by a dot.
//
// {
// "name": {"first": "Tom", "last": "Anderson"},
// "age":37,
// "children": ["Sara","Alex","Jack"],
// "friends": [
// {"first": "James", "last": "Murphy"},
// {"first": "Roger", "last": "Craig"}
// ]
// }
// "name.last" >> "Anderson"
// "age" >> 37
// "children.1" >> "Alex"
//
func Set(json, path string, value interface{}) (string, error) {
return SetOptions(json, path, value, nil)
}
// SetOptions sets a json value for the specified path with options.
// A path is in dot syntax, such as "name.last" or "age".
// This function expects that the json is well-formed, and does not validate.
// Invalid json will not panic, but it may return back unexpected results.
// An error is returned if the path is not valid.
func SetOptions(json, path string, value interface{},
opts *Options) (string, error) {
if opts != nil {
if opts.ReplaceInPlace {
// it's not safe to replace bytes in-place for strings
// copy the Options and set options.ReplaceInPlace to false.
nopts := *opts
opts = &nopts
opts.ReplaceInPlace = false
}
}
jsonh := *(*reflect.StringHeader)(unsafe.Pointer(&json))
jsonbh := reflect.SliceHeader{Data: jsonh.Data, Len: jsonh.Len}
jsonb := *(*[]byte)(unsafe.Pointer(&jsonbh))
res, err := SetBytesOptions(jsonb, path, value, opts)
return string(res), err
}
// SetBytes sets a json value for the specified path.
// If working with bytes, this method preferred over
// Set(string(data), path, value)
func SetBytes(json []byte, path string, value interface{}) ([]byte, error) {
return SetBytesOptions(json, path, value, nil)
}
// SetBytesOptions sets a json value for the specified path with options.
// If working with bytes, this method preferred over
// SetOptions(string(data), path, value)
func SetBytesOptions(json []byte, path string, value interface{},
opts *Options) ([]byte, error) {
var optimistic, inplace bool
if opts != nil {
optimistic = opts.Optimistic
inplace = opts.ReplaceInPlace
}
jstr := *(*string)(unsafe.Pointer(&json))
var res []byte
var err error
switch v := value.(type) {
default:
b, err := jsongo.Marshal(value)
if err != nil {
return nil, err
}
raw := *(*string)(unsafe.Pointer(&b))
res, err = set(jstr, path, raw, false, false, optimistic, inplace)
case dtype:
res, err = set(jstr, path, "", false, true, optimistic, inplace)
case string:
res, err = set(jstr, path, v, true, false, optimistic, inplace)
case []byte:
raw := *(*string)(unsafe.Pointer(&v))
res, err = set(jstr, path, raw, true, false, optimistic, inplace)
case bool:
if v {
res, err = set(jstr, path, "true", false, false, optimistic, inplace)
} else {
res, err = set(jstr, path, "false", false, false, optimistic, inplace)
}
case int8:
res, err = set(jstr, path, strconv.FormatInt(int64(v), 10),
false, false, optimistic, inplace)
case int16:
res, err = set(jstr, path, strconv.FormatInt(int64(v), 10),
false, false, optimistic, inplace)
case int32:
res, err = set(jstr, path, strconv.FormatInt(int64(v), 10),
false, false, optimistic, inplace)
case int64:
res, err = set(jstr, path, strconv.FormatInt(int64(v), 10),
false, false, optimistic, inplace)
case uint8:
res, err = set(jstr, path, strconv.FormatUint(uint64(v), 10),
false, false, optimistic, inplace)
case uint16:
res, err = set(jstr, path, strconv.FormatUint(uint64(v), 10),
false, false, optimistic, inplace)
case uint32:
res, err = set(jstr, path, strconv.FormatUint(uint64(v), 10),
false, false, optimistic, inplace)
case uint64:
res, err = set(jstr, path, strconv.FormatUint(uint64(v), 10),
false, false, optimistic, inplace)
case float32:
res, err = set(jstr, path, strconv.FormatFloat(float64(v), 'f', -1, 64),
false, false, optimistic, inplace)
case float64:
res, err = set(jstr, path, strconv.FormatFloat(float64(v), 'f', -1, 64),
false, false, optimistic, inplace)
}
if err == errNoChange {
return json, nil
}
return res, err
}
// SetRaw sets a raw json value for the specified path.
// This function works the same as Set except that the value is set as a
// raw block of json. This allows for setting premarshalled json objects.
func SetRaw(json, path, value string) (string, error) {
return SetRawOptions(json, path, value, nil)
}
// SetRawOptions sets a raw json value for the specified path with options.
// This furnction works the same as SetOptions except that the value is set
// as a raw block of json. This allows for setting premarshalled json objects.
func SetRawOptions(json, path, value string, opts *Options) (string, error) {
var optimistic bool
if opts != nil {
optimistic = opts.Optimistic
}
res, err := set(json, path, value, false, false, optimistic, false)
if err == errNoChange {
return json, nil
}
return string(res), err
}
// SetRawBytes sets a raw json value for the specified path.
// If working with bytes, this method preferred over
// SetRaw(string(data), path, value)
func SetRawBytes(json []byte, path string, value []byte) ([]byte, error) {
return SetRawBytesOptions(json, path, value, nil)
}
// SetRawBytesOptions sets a raw json value for the specified path with options.
// If working with bytes, this method preferred over
// SetRawOptions(string(data), path, value, opts)
func SetRawBytesOptions(json []byte, path string, value []byte,
opts *Options) ([]byte, error) {
jstr := *(*string)(unsafe.Pointer(&json))
vstr := *(*string)(unsafe.Pointer(&value))
var optimistic, inplace bool
if opts != nil {
optimistic = opts.Optimistic
inplace = opts.ReplaceInPlace
}
res, err := set(jstr, path, vstr, false, false, optimistic, inplace)
if err == errNoChange {
return json, nil
}
return res, err
}
type dtype struct{}
// Delete deletes a value from json for the specified path.
func Delete(json, path string) (string, error) {
return Set(json, path, dtype{})
}
// DeleteBytes deletes a value from json for the specified path.
func DeleteBytes(json []byte, path string) ([]byte, error) {
return SetBytes(json, path, dtype{})
}

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vendor/src/github.com/tidwall/sjson/sjson_test.go vendored Normal file
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