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// Copyright 2024 The Forgejo Authors c/o Codeberg e.V.. All rights reserved.
// SPDX-License-Identifier: MIT
package webhook
import (
"context"
"fmt"
"html/template"
"net/http"
"net/url"
"strings"
webhook_model "code.gitea.io/gitea/models/webhook"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/svg"
webhook_module "code.gitea.io/gitea/modules/webhook"
"code.gitea.io/gitea/services/forms"
"code.gitea.io/gitea/services/webhook/shared"
)
var _ Handler = defaultHandler{}
type defaultHandler struct {
forgejo bool
}
func (dh defaultHandler) Type() webhook_module.HookType {
if dh.forgejo {
return webhook_module.FORGEJO
}
return webhook_module.GITEA
}
func (dh defaultHandler) Icon(size int) template.HTML {
if dh.forgejo {
// forgejo.svg is not in web_src/svg/, so svg.RenderHTML does not work
return shared.ImgIcon("forgejo.svg", size)
}
return svg.RenderHTML("gitea-gitea", size, "img")
}
func (defaultHandler) Metadata(*webhook_model.Webhook) any { return nil }
func (defaultHandler) UnmarshalForm(bind func(any)) forms.WebhookForm {
var form struct {
forms.WebhookCoreForm
PayloadURL string `binding:"Required;ValidUrl"`
HTTPMethod string `binding:"Required;In(POST,GET)"`
ContentType int `binding:"Required"`
Secret string
}
bind(&form)
contentType := webhook_model.ContentTypeJSON
if webhook_model.HookContentType(form.ContentType) == webhook_model.ContentTypeForm {
contentType = webhook_model.ContentTypeForm
}
return forms.WebhookForm{
WebhookCoreForm: form.WebhookCoreForm,
URL: form.PayloadURL,
ContentType: contentType,
Secret: form.Secret,
HTTPMethod: form.HTTPMethod,
Metadata: nil,
}
}
func (defaultHandler) NewRequest(ctx context.Context, w *webhook_model.Webhook, t *webhook_model.HookTask) (req *http.Request, body []byte, err error) {
payloadContent := t.PayloadContent
if w.Type == webhook_module.GITEA &&
(t.EventType == webhook_module.HookEventCreate || t.EventType == webhook_module.HookEventDelete) {
// Woodpecker expects the ref to be short on tag creation only
// https://github.com/woodpecker-ci/woodpecker/blob/00ccec078cdced80cf309cd4da460a5041d7991a/server/forge/gitea/helper.go#L134
// see https://codeberg.org/codeberg/community/issues/1556
payloadContent, err = substituteRefShortName(payloadContent)
if err != nil {
return nil, nil, fmt.Errorf("could not substitute ref: %w", err)
}
}
switch w.HTTPMethod {
case "":
log.Info("HTTP Method for %s webhook %s [ID: %d] is not set, defaulting to POST", w.Type, w.URL, w.ID)
fallthrough
case http.MethodPost:
switch w.ContentType {
case webhook_model.ContentTypeJSON:
req, err = http.NewRequest("POST", w.URL, strings.NewReader(payloadContent))
if err != nil {
return nil, nil, err
}
req.Header.Set("Content-Type", "application/json")
case webhook_model.ContentTypeForm:
forms := url.Values{
"payload": []string{payloadContent},
}
req, err = http.NewRequest("POST", w.URL, strings.NewReader(forms.Encode()))
if err != nil {
return nil, nil, err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
default:
return nil, nil, fmt.Errorf("invalid content type: %v", w.ContentType)
}
case http.MethodGet:
u, err := url.Parse(w.URL)
if err != nil {
return nil, nil, fmt.Errorf("invalid URL: %w", err)
}
vals := u.Query()
vals["payload"] = []string{payloadContent}
u.RawQuery = vals.Encode()
req, err = http.NewRequest("GET", u.String(), nil)
if err != nil {
return nil, nil, err
}
case http.MethodPut:
switch w.Type {
case webhook_module.MATRIX: // used when t.Version == 1
txnID, err := getMatrixTxnID([]byte(payloadContent))
if err != nil {
return nil, nil, err
}
url := fmt.Sprintf("%s/%s", w.URL, url.PathEscape(txnID))
req, err = http.NewRequest("PUT", url, strings.NewReader(payloadContent))
if err != nil {
return nil, nil, err
}
default:
return nil, nil, fmt.Errorf("invalid http method: %v", w.HTTPMethod)
}
default:
return nil, nil, fmt.Errorf("invalid http method: %v", w.HTTPMethod)
}
body = []byte(payloadContent)
return req, body, shared.AddDefaultHeaders(req, []byte(w.Secret), t, body)
}
func substituteRefShortName(body string) (string, error) {
var m map[string]any
if err := json.Unmarshal([]byte(body), &m); err != nil {
return body, err
}
ref, ok := m["ref"].(string)
if !ok {
return body, fmt.Errorf("expected string 'ref', got %T", m["ref"])
}
m["ref"] = git.RefName(ref).ShortName()
buf, err := json.Marshal(m)
return string(buf), err
}
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