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72b6bc8caf
A more complete fix for #31588 1. Make "generic" code more readable 2. Clarify HTML or Markdown for the payload content
111 lines
4.4 KiB
Go
111 lines
4.4 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package webhook
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import (
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"bytes"
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"fmt"
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"net/http"
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webhook_model "code.gitea.io/gitea/models/webhook"
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"code.gitea.io/gitea/modules/json"
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api "code.gitea.io/gitea/modules/structs"
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webhook_module "code.gitea.io/gitea/modules/webhook"
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)
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// payloadConvertor defines the interface to convert system payload to webhook payload
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type payloadConvertor[T any] interface {
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Create(*api.CreatePayload) (T, error)
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Delete(*api.DeletePayload) (T, error)
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Fork(*api.ForkPayload) (T, error)
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Issue(*api.IssuePayload) (T, error)
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IssueComment(*api.IssueCommentPayload) (T, error)
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Push(*api.PushPayload) (T, error)
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PullRequest(*api.PullRequestPayload) (T, error)
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Review(*api.PullRequestPayload, webhook_module.HookEventType) (T, error)
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Repository(*api.RepositoryPayload) (T, error)
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Release(*api.ReleasePayload) (T, error)
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Wiki(*api.WikiPayload) (T, error)
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Package(*api.PackagePayload) (T, error)
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}
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func convertUnmarshalledJSON[T, P any](convert func(P) (T, error), data []byte) (t T, err error) {
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var p P
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if err = json.Unmarshal(data, &p); err != nil {
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return t, fmt.Errorf("could not unmarshal payload: %w", err)
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}
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return convert(p)
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}
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func newPayload[T any](rc payloadConvertor[T], data []byte, event webhook_module.HookEventType) (t T, err error) {
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switch event {
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case webhook_module.HookEventCreate:
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return convertUnmarshalledJSON(rc.Create, data)
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case webhook_module.HookEventDelete:
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return convertUnmarshalledJSON(rc.Delete, data)
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case webhook_module.HookEventFork:
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return convertUnmarshalledJSON(rc.Fork, data)
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case webhook_module.HookEventIssues, webhook_module.HookEventIssueAssign, webhook_module.HookEventIssueLabel, webhook_module.HookEventIssueMilestone:
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return convertUnmarshalledJSON(rc.Issue, data)
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case webhook_module.HookEventIssueComment, webhook_module.HookEventPullRequestComment:
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// previous code sometimes sent s.PullRequest(p.(*api.PullRequestPayload))
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// however I couldn't find in notifier.go such a payload with an HookEvent***Comment event
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// History (most recent first):
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// - refactored in https://github.com/go-gitea/gitea/pull/12310
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// - assertion added in https://github.com/go-gitea/gitea/pull/12046
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// - issue raised in https://github.com/go-gitea/gitea/issues/11940#issuecomment-645713996
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// > That's because for HookEventPullRequestComment event, some places use IssueCommentPayload and others use PullRequestPayload
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// In modules/actions/workflows.go:183 the type assertion is always payload.(*api.IssueCommentPayload)
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return convertUnmarshalledJSON(rc.IssueComment, data)
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case webhook_module.HookEventPush:
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return convertUnmarshalledJSON(rc.Push, data)
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case webhook_module.HookEventPullRequest, webhook_module.HookEventPullRequestAssign, webhook_module.HookEventPullRequestLabel,
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webhook_module.HookEventPullRequestMilestone, webhook_module.HookEventPullRequestSync, webhook_module.HookEventPullRequestReviewRequest:
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return convertUnmarshalledJSON(rc.PullRequest, data)
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case webhook_module.HookEventPullRequestReviewApproved, webhook_module.HookEventPullRequestReviewRejected, webhook_module.HookEventPullRequestReviewComment:
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return convertUnmarshalledJSON(func(p *api.PullRequestPayload) (T, error) {
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return rc.Review(p, event)
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}, data)
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case webhook_module.HookEventRepository:
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return convertUnmarshalledJSON(rc.Repository, data)
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case webhook_module.HookEventRelease:
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return convertUnmarshalledJSON(rc.Release, data)
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case webhook_module.HookEventWiki:
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return convertUnmarshalledJSON(rc.Wiki, data)
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case webhook_module.HookEventPackage:
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return convertUnmarshalledJSON(rc.Package, data)
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}
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return t, fmt.Errorf("newPayload unsupported event: %s", event)
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}
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func newJSONRequest[T any](pc payloadConvertor[T], w *webhook_model.Webhook, t *webhook_model.HookTask, withDefaultHeaders bool) (*http.Request, []byte, error) {
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payload, err := newPayload(pc, []byte(t.PayloadContent), t.EventType)
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if err != nil {
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return nil, nil, err
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}
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body, err := json.MarshalIndent(payload, "", " ")
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if err != nil {
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return nil, nil, err
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}
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method := w.HTTPMethod
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if method == "" {
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method = http.MethodPost
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}
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req, err := http.NewRequest(method, w.URL, bytes.NewReader(body))
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if err != nil {
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return nil, nil, err
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}
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req.Header.Set("Content-Type", "application/json")
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if withDefaultHeaders {
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return req, body, addDefaultHeaders(req, []byte(w.Secret), t, body)
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}
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return req, body, nil
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}
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