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@@ -0,0 +1,57 @@ |
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package koushinviewhtml |
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import ( |
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"bytes" |
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"fmt" |
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"html/template" |
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"io/ioutil" |
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"strings" |
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"git.sr.ht/~emersion/koushin" |
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koushinbase "git.sr.ht/~emersion/koushin/plugins/base" |
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"github.com/emersion/go-message" |
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) |
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const tpl = ` |
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<!-- allow-same-origin is required to resize the frame with its content --> |
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<!-- allow-popups is required for target="_blank" links --> |
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<iframe id="email-frame" srcdoc="{{.}}" sandbox="allow-same-origin allow-popups"></iframe> |
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<script src="/plugins/viewhtml/assets/script.js"></script> |
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<link rel="stylesheet" href="/plugins/viewhtml/assets/style.css"> |
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` |
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type viewer struct{} |
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func (viewer) ViewMessagePart(ctx *koushin.Context, msg *koushinbase.IMAPMessage, part *message.Entity) (interface{}, error) { |
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mimeType, _, err := part.Header.ContentType() |
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if err != nil { |
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return nil, err |
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} |
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if !strings.EqualFold(mimeType, "text/html") { |
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return nil, koushinbase.ErrViewUnsupported |
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} |
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body, err := ioutil.ReadAll(part.Body) |
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if err != nil { |
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return nil, fmt.Errorf("failed to read part body: %v", err) |
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} |
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body, err = sanitizeHTML(body) |
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if err != nil { |
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return nil, fmt.Errorf("failed to sanitize HTML part: %v", err) |
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} |
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t := template.Must(template.New("view-html.html").Parse(tpl)) |
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var buf bytes.Buffer |
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err = t.Execute(&buf, string(body)) |
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if err != nil { |
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return nil, err |
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} |
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return template.HTML(buf.String()), nil |
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} |
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func init() { |
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koushinbase.RegisterViewer(viewer{}) |
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} |