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Merged
merged 5 commits into from
Jan 15, 2021
Merged

Kd/fix allow svg doctype #14344

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2ec15d9
make svg regex case-insensitive & use strict word boundary
kdumontnu Jan 14, 2021
eefd258
allow doctype svg
kdumontnu Jan 14, 2021
5683c0c
add doctype tests
kdumontnu Jan 15, 2021
8a0ad92
allow <!DOCTYPE svg> and <svg/>
kdumontnu Jan 15, 2021
8a0c612
Merge branch 'master' into kd/fix-allow_svg__doctype
kdumontnu Jan 15, 2021
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4 changes: 2 additions & 2 deletions modules/base/tool.go
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Original file line number Diff line number Diff line change
Expand Up @@ -35,8 +35,8 @@ const sniffLen = 512
// SVGMimeType MIME type of SVG images.
const SVGMimeType = "image/svg+xml"

var svgTagRegex = regexp.MustCompile(`(?s)\A\s*(?:<!--.*?-->\s*)*<svg\b`)
var svgTagInXMLRegex = regexp.MustCompile(`(?s)\A<\?xml\b.*?\?>\s*(?:<!--.*?-->\s*)*<svg\b`)
var svgTagRegex = regexp.MustCompile(`(?si)\A\s*(?:(<!--.*?-->|<!DOCTYPE\s+svg([\s:]+.*?>|>))\s*)*<svg[\s>\/]`)
var svgTagInXMLRegex = regexp.MustCompile(`(?si)\A<\?xml\b.*?\?>\s*(?:(<!--.*?-->|<!DOCTYPE\s+svg([\s:]+.*?>|>))\s*)*<svg[\s>\/]`)

// EncodeMD5 encodes string to md5 hex value.
func EncodeMD5(str string) string {
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8 changes: 8 additions & 0 deletions modules/base/tool_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,9 @@ func TestIsSVGImageFile(t *testing.T) {
assert.True(t, IsSVGImageFile([]byte(`<!-- Multiline
Comment -->
<svg></svg>`)))
assert.True(t, IsSVGImageFile([]byte(`<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">
<svg></svg>`)))
assert.True(t, IsSVGImageFile([]byte(`<?xml version="1.0" encoding="UTF-8"?>
<!-- Comment -->
<svg></svg>`)))
Expand All @@ -227,6 +230,11 @@ func TestIsSVGImageFile(t *testing.T) {
<!-- Multline
Comment -->
<svg></svg>`)))
assert.True(t, IsSVGImageFile([]byte(`<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Multline
Comment -->
<svg></svg>`)))
assert.False(t, IsSVGImageFile([]byte{}))
assert.False(t, IsSVGImageFile([]byte("svg")))
assert.False(t, IsSVGImageFile([]byte("<svgfoo></svgfoo>")))
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