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Don't use legacy method to send Matrix Webhook (#12348)
* Don't use legacy send for messages * Add migrations to ensure Matrix webhooks use PUT * Set HTTP method to PUT as default * Fix sql condition.. Signed-off-by: Till Faelligen <tfaelligen@gmail.com> * Rename getTxnID -> getMatrixTxnID * Use local variable instead of constant value Co-authored-by: techknowlogick <techknowlogick@gitea.io>
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@ -220,6 +220,8 @@ var migrations = []Migration{
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NewMigration("Ensure Repository.IsArchived is not null", setIsArchivedToFalse),
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// v143 -> v144
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NewMigration("recalculate Stars number for all user", recalculateStars),
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// v144 -> v145
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NewMigration("update Matrix Webhook http method to 'PUT'", updateMatrixWebhookHTTPMethod),
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}
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// GetCurrentDBVersion returns the current db version
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25
models/migrations/v144.go
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25
models/migrations/v144.go
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@ -0,0 +1,25 @@
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"code.gitea.io/gitea/modules/log"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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func updateMatrixWebhookHTTPMethod(x *xorm.Engine) error {
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var matrixHookTaskType = 9 // value comes from the models package
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type Webhook struct {
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HTTPMethod string
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}
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cond := builder.Eq{"hook_task_type": matrixHookTaskType}.And(builder.Neq{"http_method": "PUT"})
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count, err := x.Where(cond).Cols("http_method").Update(&Webhook{HTTPMethod: "PUT"})
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if err == nil {
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log.Debug("Updated %d Matrix webhooks with http_method 'PUT'", count)
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}
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return err
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}
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@ -77,17 +77,20 @@ func Deliver(t *models.HookTask) error {
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if err != nil {
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return err
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}
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case http.MethodPut:
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switch t.Type {
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case models.MATRIX:
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req, err = getMatrixHookRequest(t)
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if err != nil {
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return err
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}
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default:
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return fmt.Errorf("Invalid http method for webhook: [%d] %v", t.ID, t.HTTPMethod)
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}
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default:
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return fmt.Errorf("Invalid http method for webhook: [%d] %v", t.ID, t.HTTPMethod)
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}
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if t.Type == models.MATRIX {
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req, err = getMatrixHookRequest(t)
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if err != nil {
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return err
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}
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}
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req.Header.Add("X-Gitea-Delivery", t.UUID)
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req.Header.Add("X-Gitea-Event", t.EventType.Event())
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req.Header.Add("X-Gitea-Signature", t.Signature)
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@ -5,6 +5,7 @@
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package webhook
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import (
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"crypto/sha1"
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"encoding/json"
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"errors"
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"fmt"
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@ -291,7 +292,14 @@ func getMatrixHookRequest(t *models.HookTask) (*http.Request, error) {
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}
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t.PayloadContent = string(payload)
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req, err := http.NewRequest("POST", t.URL, strings.NewReader(string(payload)))
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txnID, err := getMatrixTxnID(payload)
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if err != nil {
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return nil, fmt.Errorf("getMatrixHookRequest: unable to hash payload: %+v", err)
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}
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t.URL = fmt.Sprintf("%s/%s", t.URL, txnID)
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req, err := http.NewRequest(t.HTTPMethod, t.URL, strings.NewReader(string(payload)))
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if err != nil {
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return nil, err
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}
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@ -301,3 +309,14 @@ func getMatrixHookRequest(t *models.HookTask) (*http.Request, error) {
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return req, nil
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}
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// getMatrixTxnID creates a txnID based on the payload to ensure idempotency
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func getMatrixTxnID(payload []byte) (string, error) {
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h := sha1.New()
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_, err := h.Write(payload)
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if err != nil {
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return "", err
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}
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return fmt.Sprintf("%x", h.Sum(nil)), nil
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}
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@ -154,3 +154,32 @@ func TestMatrixHookRequest(t *testing.T) {
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assert.Equal(t, "Bearer dummy_access_token", req.Header.Get("Authorization"))
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assert.Equal(t, wantPayloadContent, h.PayloadContent)
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}
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func Test_getTxnID(t *testing.T) {
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type args struct {
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payload []byte
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}
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tests := []struct {
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name string
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args args
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want string
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wantErr bool
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}{
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{
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name: "dummy payload",
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args: args{payload: []byte("Hello World")},
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want: "0a4d55a8d778e5022fab701977c5d840bbc486d0",
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wantErr: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, err := getMatrixTxnID(tt.args.payload)
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if (err != nil) != tt.wantErr {
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t.Errorf("getMatrixTxnID() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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assert.Equal(t, tt.want, got)
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})
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}
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}
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@ -454,6 +454,7 @@ func MatrixHooksNewPost(ctx *context.Context, form auth.NewMatrixHookForm) {
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RepoID: orCtx.RepoID,
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URL: fmt.Sprintf("%s/_matrix/client/r0/rooms/%s/send/m.room.message", form.HomeserverURL, form.RoomID),
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ContentType: models.ContentTypeJSON,
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HTTPMethod: "PUT",
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HookEvent: ParseHookEvent(form.WebhookForm),
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IsActive: form.Active,
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HookTaskType: models.MATRIX,
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