310376525b
- Use the forked [binding](https://code.forgejo.org/go-chi/binding) library. This library has two benefits, it removes the usage of `github.com/goccy/go-json` (has no benefit as the minimo library is also using it). It adds the `TrimSpace` feature, which will during the binding part trim the spaces around the value it got from the form, this is done before validation.
361 lines
11 KiB
Go
361 lines
11 KiB
Go
// Copyright 2014 The Gogs 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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"context"
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"fmt"
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"html/template"
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"net/http"
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"regexp"
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"strings"
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webhook_model "code.gitea.io/gitea/models/webhook"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/json"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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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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gitea_context "code.gitea.io/gitea/services/context"
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"code.gitea.io/gitea/services/forms"
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"code.gitea.io/gitea/services/webhook/shared"
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"code.forgejo.org/go-chi/binding"
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)
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type slackHandler struct{}
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func (slackHandler) Type() webhook_module.HookType { return webhook_module.SLACK }
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func (slackHandler) Icon(size int) template.HTML { return shared.ImgIcon("slack.png", size) }
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type slackForm struct {
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forms.WebhookCoreForm
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PayloadURL string `binding:"Required;ValidUrl"`
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Channel string `binding:"Required"`
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Username string
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IconURL string
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Color string
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}
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var _ binding.Validator = &slackForm{}
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// Validate implements binding.Validator.
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func (s *slackForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
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ctx := gitea_context.GetWebContext(req)
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if !IsValidSlackChannel(strings.TrimSpace(s.Channel)) {
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errs = append(errs, binding.Error{
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FieldNames: []string{"Channel"},
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Classification: "",
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Message: ctx.Locale.TrString("repo.settings.add_webhook.invalid_channel_name"),
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})
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}
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return errs
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}
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func (slackHandler) UnmarshalForm(bind func(any)) forms.WebhookForm {
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var form slackForm
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bind(&form)
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return forms.WebhookForm{
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WebhookCoreForm: form.WebhookCoreForm,
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URL: form.PayloadURL,
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ContentType: webhook_model.ContentTypeJSON,
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Secret: "",
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HTTPMethod: http.MethodPost,
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Metadata: &SlackMeta{
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Channel: strings.TrimSpace(form.Channel),
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Username: form.Username,
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IconURL: form.IconURL,
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Color: form.Color,
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},
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}
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}
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// SlackMeta contains the slack metadata
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type SlackMeta struct {
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Channel string `json:"channel"`
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Username string `json:"username"`
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IconURL string `json:"icon_url"`
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Color string `json:"color"`
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}
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// Metadata returns slack metadata
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func (slackHandler) Metadata(w *webhook_model.Webhook) any {
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s := &SlackMeta{}
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if err := json.Unmarshal([]byte(w.Meta), s); err != nil {
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log.Error("slackHandler.Metadata(%d): %v", w.ID, err)
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}
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return s
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}
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// SlackPayload contains the information about the slack channel
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type SlackPayload struct {
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Channel string `json:"channel"`
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Text string `json:"text"`
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Username string `json:"username"`
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IconURL string `json:"icon_url"`
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UnfurlLinks int `json:"unfurl_links"`
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LinkNames int `json:"link_names"`
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Attachments []SlackAttachment `json:"attachments"`
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}
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// SlackAttachment contains the slack message
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type SlackAttachment struct {
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Fallback string `json:"fallback"`
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Color string `json:"color"`
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Title string `json:"title"`
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TitleLink string `json:"title_link"`
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Text string `json:"text"`
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}
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// SlackTextFormatter replaces &, <, > with HTML characters
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// see: https://api.slack.com/docs/formatting
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func SlackTextFormatter(s string) string {
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// replace & < >
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s = strings.ReplaceAll(s, "&", "&")
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s = strings.ReplaceAll(s, "<", "<")
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s = strings.ReplaceAll(s, ">", ">")
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return s
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}
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// SlackShortTextFormatter replaces &, <, > with HTML characters
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func SlackShortTextFormatter(s string) string {
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s = strings.Split(s, "\n")[0]
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// replace & < >
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s = strings.ReplaceAll(s, "&", "&")
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s = strings.ReplaceAll(s, "<", "<")
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s = strings.ReplaceAll(s, ">", ">")
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return s
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}
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// SlackLinkFormatter creates a link compatible with slack
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func SlackLinkFormatter(url, text string) string {
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return fmt.Sprintf("<%s|%s>", url, SlackTextFormatter(text))
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}
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// SlackLinkToRef slack-formatter link to a repo ref
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func SlackLinkToRef(repoURL, ref string) string {
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// FIXME: SHA1 hardcoded here
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url := git.RefURL(repoURL, ref)
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refName := git.RefName(ref).ShortName()
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return SlackLinkFormatter(url, refName)
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}
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// Create implements payloadConvertor Create method
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func (s slackConvertor) Create(p *api.CreatePayload) (SlackPayload, error) {
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repoLink := SlackLinkFormatter(p.Repo.HTMLURL, p.Repo.FullName)
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refLink := SlackLinkToRef(p.Repo.HTMLURL, p.Ref)
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text := fmt.Sprintf("[%s:%s] %s created by %s", repoLink, refLink, p.RefType, p.Sender.UserName)
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return s.createPayload(text, nil), nil
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}
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// Delete composes Slack payload for delete a branch or tag.
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func (s slackConvertor) Delete(p *api.DeletePayload) (SlackPayload, error) {
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refName := git.RefName(p.Ref).ShortName()
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repoLink := SlackLinkFormatter(p.Repo.HTMLURL, p.Repo.FullName)
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text := fmt.Sprintf("[%s:%s] %s deleted by %s", repoLink, refName, p.RefType, p.Sender.UserName)
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return s.createPayload(text, nil), nil
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}
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// Fork composes Slack payload for forked by a repository.
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func (s slackConvertor) Fork(p *api.ForkPayload) (SlackPayload, error) {
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baseLink := SlackLinkFormatter(p.Forkee.HTMLURL, p.Forkee.FullName)
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forkLink := SlackLinkFormatter(p.Repo.HTMLURL, p.Repo.FullName)
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text := fmt.Sprintf("%s is forked to %s", baseLink, forkLink)
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return s.createPayload(text, nil), nil
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}
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// Issue implements payloadConvertor Issue method
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func (s slackConvertor) Issue(p *api.IssuePayload) (SlackPayload, error) {
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text, issueTitle, attachmentText, color := getIssuesPayloadInfo(p, SlackLinkFormatter, true)
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var attachments []SlackAttachment
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if attachmentText != "" {
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attachmentText = SlackTextFormatter(attachmentText)
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issueTitle = SlackTextFormatter(issueTitle)
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attachments = append(attachments, SlackAttachment{
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Color: fmt.Sprintf("%x", color),
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Title: issueTitle,
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TitleLink: p.Issue.HTMLURL,
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Text: attachmentText,
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})
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}
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return s.createPayload(text, attachments), nil
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}
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// IssueComment implements payloadConvertor IssueComment method
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func (s slackConvertor) IssueComment(p *api.IssueCommentPayload) (SlackPayload, error) {
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text, issueTitle, color := getIssueCommentPayloadInfo(p, SlackLinkFormatter, true)
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return s.createPayload(text, []SlackAttachment{{
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Color: fmt.Sprintf("%x", color),
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Title: issueTitle,
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TitleLink: p.Comment.HTMLURL,
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Text: SlackTextFormatter(p.Comment.Body),
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}}), nil
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}
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// Wiki implements payloadConvertor Wiki method
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func (s slackConvertor) Wiki(p *api.WikiPayload) (SlackPayload, error) {
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text, _, _ := getWikiPayloadInfo(p, SlackLinkFormatter, true)
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return s.createPayload(text, nil), nil
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}
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// Release implements payloadConvertor Release method
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func (s slackConvertor) Release(p *api.ReleasePayload) (SlackPayload, error) {
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text, _ := getReleasePayloadInfo(p, SlackLinkFormatter, true)
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return s.createPayload(text, nil), nil
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}
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func (s slackConvertor) Package(p *api.PackagePayload) (SlackPayload, error) {
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text, _ := getPackagePayloadInfo(p, SlackLinkFormatter, true)
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return s.createPayload(text, nil), nil
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}
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// Push implements payloadConvertor Push method
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func (s slackConvertor) Push(p *api.PushPayload) (SlackPayload, error) {
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// n new commits
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var (
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commitDesc string
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commitString string
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)
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if p.TotalCommits == 1 {
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commitDesc = "1 new commit"
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} else {
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commitDesc = fmt.Sprintf("%d new commits", p.TotalCommits)
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}
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if len(p.CompareURL) > 0 {
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commitString = SlackLinkFormatter(p.CompareURL, commitDesc)
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} else {
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commitString = commitDesc
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}
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repoLink := SlackLinkFormatter(p.Repo.HTMLURL, p.Repo.FullName)
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branchLink := SlackLinkToRef(p.Repo.HTMLURL, p.Ref)
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text := fmt.Sprintf("[%s:%s] %s pushed by %s", repoLink, branchLink, commitString, p.Pusher.UserName)
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var attachmentText string
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// for each commit, generate attachment text
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for i, commit := range p.Commits {
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attachmentText += fmt.Sprintf("%s: %s - %s", SlackLinkFormatter(commit.URL, commit.ID[:7]), SlackShortTextFormatter(commit.Message), SlackTextFormatter(commit.Author.Name))
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// add linebreak to each commit but the last
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if i < len(p.Commits)-1 {
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attachmentText += "\n"
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}
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}
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return s.createPayload(text, []SlackAttachment{{
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Color: s.Color,
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Title: p.Repo.HTMLURL,
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TitleLink: p.Repo.HTMLURL,
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Text: attachmentText,
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}}), nil
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}
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// PullRequest implements payloadConvertor PullRequest method
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func (s slackConvertor) PullRequest(p *api.PullRequestPayload) (SlackPayload, error) {
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text, issueTitle, attachmentText, color := getPullRequestPayloadInfo(p, SlackLinkFormatter, true)
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var attachments []SlackAttachment
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if attachmentText != "" {
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attachmentText = SlackTextFormatter(p.PullRequest.Body)
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issueTitle = SlackTextFormatter(issueTitle)
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attachments = append(attachments, SlackAttachment{
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Color: fmt.Sprintf("%x", color),
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Title: issueTitle,
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TitleLink: p.PullRequest.HTMLURL,
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Text: attachmentText,
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})
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}
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return s.createPayload(text, attachments), nil
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}
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// Review implements payloadConvertor Review method
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func (s slackConvertor) Review(p *api.PullRequestPayload, event webhook_module.HookEventType) (SlackPayload, error) {
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senderLink := SlackLinkFormatter(setting.AppURL+p.Sender.UserName, p.Sender.UserName)
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title := fmt.Sprintf("#%d %s", p.Index, p.PullRequest.Title)
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titleLink := fmt.Sprintf("%s/pulls/%d", p.Repository.HTMLURL, p.Index)
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repoLink := SlackLinkFormatter(p.Repository.HTMLURL, p.Repository.FullName)
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var text string
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if p.Action == api.HookIssueReviewed {
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action, err := parseHookPullRequestEventType(event)
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if err != nil {
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return SlackPayload{}, err
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}
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text = fmt.Sprintf("[%s] Pull request review %s: [%s](%s) by %s", repoLink, action, title, titleLink, senderLink)
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}
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return s.createPayload(text, nil), nil
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}
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// Repository implements payloadConvertor Repository method
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func (s slackConvertor) Repository(p *api.RepositoryPayload) (SlackPayload, error) {
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senderLink := SlackLinkFormatter(setting.AppURL+p.Sender.UserName, p.Sender.UserName)
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repoLink := SlackLinkFormatter(p.Repository.HTMLURL, p.Repository.FullName)
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var text string
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switch p.Action {
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case api.HookRepoCreated:
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text = fmt.Sprintf("[%s] Repository created by %s", repoLink, senderLink)
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case api.HookRepoDeleted:
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text = fmt.Sprintf("[%s] Repository deleted by %s", repoLink, senderLink)
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}
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return s.createPayload(text, nil), nil
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}
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func (s slackConvertor) createPayload(text string, attachments []SlackAttachment) SlackPayload {
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return SlackPayload{
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Channel: s.Channel,
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Text: text,
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Username: s.Username,
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IconURL: s.IconURL,
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Attachments: attachments,
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}
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}
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type slackConvertor struct {
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Channel string
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Username string
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IconURL string
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Color string
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}
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var _ shared.PayloadConvertor[SlackPayload] = slackConvertor{}
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func (slackHandler) NewRequest(ctx context.Context, w *webhook_model.Webhook, t *webhook_model.HookTask) (*http.Request, []byte, error) {
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meta := &SlackMeta{}
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if err := json.Unmarshal([]byte(w.Meta), meta); err != nil {
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return nil, nil, fmt.Errorf("slackHandler.NewRequest meta json: %w", err)
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}
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sc := slackConvertor{
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Channel: meta.Channel,
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Username: meta.Username,
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IconURL: meta.IconURL,
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Color: meta.Color,
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}
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return shared.NewJSONRequest(sc, w, t, true)
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}
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var slackChannel = regexp.MustCompile(`^#?[a-z0-9_-]{1,80}$`)
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// IsValidSlackChannel validates a channel name conforms to what slack expects:
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// https://api.slack.com/methods/conversations.rename#naming
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// Conversation names can only contain lowercase letters, numbers, hyphens, and underscores, and must be 80 characters or less.
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// Forgejo accepts if it starts with a #.
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func IsValidSlackChannel(name string) bool {
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return slackChannel.MatchString(name)
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}
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