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|
package magic
import (
"archive/zip"
"bytes"
"fmt"
"io"
"testing"
)
func createZip(files []string) (*bytes.Buffer, error) {
buf := bytes.NewBuffer(nil)
w := zip.NewWriter(buf)
for _, f := range files {
_, err := w.Create(f)
if err != nil {
return nil, err
}
}
return buf, w.Close()
}
func createZipUncompressed(content *bytes.Buffer) (*bytes.Buffer, error) {
buf := bytes.NewBuffer(nil)
w := zip.NewWriter(buf)
for i := 0; i < 5; i++ {
file, err := w.CreateHeader(&zip.FileHeader{
Name: fmt.Sprintf("file%d", i),
Method: zip.Store, // Store means 0 compression.
})
if err != nil {
return nil, err
}
if _, err := io.Copy(file, content); err != nil {
return nil, err
}
}
return buf, w.Close()
}
func TestZeroZip(t *testing.T) {
tcases := []struct {
name string
files []string
xlsx bool
docx bool
pptx bool
jar bool
}{{
name: "empty zip",
files: nil,
}, {
name: "no customXml",
files: []string{"foo", "word/"},
}, {
name: "customXml, but no word/",
files: []string{"customXml"},
}, {
name: "customXml, and other files, but no word/",
files: []string{"customXml", "1", "2", "3"},
}, {
name: "customXml, and other files, but word/ is the 7th file", // we only check until 6th file
files: []string{"customXml", "1", "2", "3", "4", "5", "word/"},
}, {
name: "customXml, word/ xl/ pptx/ after 5 files",
files: []string{"1", "2", "3", "4", "5", "customXml", "word/", "xl/", "ppt/"},
}, {
name: "customXml, word/",
files: []string{"customXml", "word/"},
docx: true,
}, {
name: "customXml, word/with_suffix",
files: []string{"customXml", "word/with_suffix"},
docx: true,
}, {
name: "customXml, word/",
files: []string{"customXml", "word/media"},
docx: true,
}, {
name: "customXml, xl/",
files: []string{"customXml", "xl/media"},
xlsx: true,
}, {
name: "customXml, ppt/",
files: []string{"customXml", "ppt/media"},
pptx: true,
}, {
name: "META-INF",
files: []string{"META-INF/MANIFEST.MF"},
jar: true,
}, {
name: "1 2 3 4 5 6 META-INF", // we only check first 6 files
files: []string{"1", "2", "3", "4", "5", "6", "META-INF/MANIFEST.MF"},
jar: false,
}}
for _, tc := range tcases {
t.Run(tc.name, func(t *testing.T) {
buf, err := createZip(tc.files)
if err != nil {
t.Fatal(err)
}
docx := Docx(buf.Bytes(), 0)
xlsx := Xlsx(buf.Bytes(), 0)
pptx := Pptx(buf.Bytes(), 0)
jar := Jar(buf.Bytes(), 0)
if tc.docx != docx || tc.xlsx != xlsx || tc.pptx != pptx || tc.jar != jar {
t.Errorf(`expected %t %t %t %t;
got %t %t %t %t`, tc.docx, tc.xlsx, tc.pptx, tc.jar, docx, xlsx, pptx, jar)
}
// #400 - xlsx, docx, pptx put as is (compression lvl 0) inside a zip
// It should continue to get detected as regular zip, not xlsx or docx or pptx.
uncompressedZip, err := createZipUncompressed(buf)
if err != nil {
t.Fatal(err)
}
docx = Docx(uncompressedZip.Bytes(), 0)
xlsx = Xlsx(uncompressedZip.Bytes(), 0)
pptx = Pptx(uncompressedZip.Bytes(), 0)
jar = Jar(uncompressedZip.Bytes(), 0)
if docx || xlsx || pptx || jar {
t.Errorf(`uncompressedZip: expected false, false, false;
got %t %t %t %t`, docx, xlsx, pptx, jar)
}
})
}
}
|
