54a3dff1c2
- Implement TNEF extraction and recursive parsing in new `tnef_reader.go` and associated tests. - Create tests for TNEF extraction scenarios in `tnef_diag_test.go`, `tnef_diag7_test.go`, and `tnef_diag8_test.go`.
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package internal
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"strings"
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"testing"
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"github.com/teamwork/tnef"
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)
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func TestTNEFDiag(t *testing.T) {
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testFile := `H:\Dev\Gits\EMLy\EML_TNEF.eml`
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if _, err := os.Stat(testFile); os.IsNotExist(err) {
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t.Skip("test EML file not present")
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}
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f, _ := os.Open(testFile)
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defer f.Close()
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// Parse the PEC outer envelope
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outerEmail, err := Parse(f)
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if err != nil {
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t.Fatalf("parse outer: %v", err)
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}
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// Find postacert.eml
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var innerData []byte
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for _, att := range outerEmail.Attachments {
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if strings.Contains(strings.ToLower(att.Filename), "postacert.eml") {
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innerData, _ = io.ReadAll(att.Data)
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break
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}
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}
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if innerData == nil {
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t.Fatal("no postacert.eml found")
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}
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// Parse inner email
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innerEmail, err := Parse(bytes.NewReader(innerData))
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if err != nil {
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t.Fatalf("parse inner: %v", err)
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}
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fmt.Printf("Inner attachments: %d\n", len(innerEmail.Attachments))
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for i, att := range innerEmail.Attachments {
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data, _ := io.ReadAll(att.Data)
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fmt.Printf(" [%d] filename=%q contentType=%q size=%d\n", i, att.Filename, att.ContentType, len(data))
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if strings.ToLower(att.Filename) == "winmail.dat" ||
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strings.Contains(strings.ToLower(att.ContentType), "ms-tnef") {
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fmt.Printf(" Found TNEF! First 20 bytes: %x\n", data[:min(20, len(data))])
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fmt.Printf(" isTNEFData: %v\n", isTNEFData(data))
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decoded, err := tnef.Decode(data)
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if err != nil {
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fmt.Printf(" TNEF decode error: %v\n", err)
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continue
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}
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fmt.Printf(" TNEF Body len: %d\n", len(decoded.Body))
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fmt.Printf(" TNEF BodyHTML len: %d\n", len(decoded.BodyHTML))
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fmt.Printf(" TNEF Attachments: %d\n", len(decoded.Attachments))
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for j, ta := range decoded.Attachments {
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fmt.Printf(" [%d] title=%q size=%d\n", j, ta.Title, len(ta.Data))
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}
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fmt.Printf(" TNEF Attributes: %d\n", len(decoded.Attributes))
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}
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}
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}
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func min(a, b int) int {
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if a < b {
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return a
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}
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return b
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}
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