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Stricter unicode space check in email regex (with tests) #1316

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Stricter unicode space check in email regex (with tests) #1316

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75a418b
Stricter unicode space check in email regex (with tests)
Sep 3, 2024
7357d74
Add comment about space
Sep 3, 2024
5cdcd60
Do not allow Line Separator U+2028 in email
Sep 13, 2024
71b5c77
Merge branch 'go-playground:master' into stricter-unicode-space-check…
vesquen Jun 20, 2025
8bb1494
Make test string contents clear and unambiguous
vesquen Jun 20, 2025
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2 changes: 1 addition & 1 deletion regexes.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ const (
rgbaRegexString = "^rgba\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
hslRegexString = "^hsl\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*\\)$"
hslaRegexString = "^hsla\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
emailRegexString = "^(?:(?:(?:(?:[a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(?:\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|(?:(?:\\x22)(?:(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(?:\\x20|\\x09)+)?(?:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(\\x20|\\x09)+)?(?:\\x22))))@(?:(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
emailRegexString = "^(?:(?:(?:(?:[a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(?:\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|(?:(?:\\x22)(?:(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(?:\\x20|\\x09)+)?(?:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(\\x20|\\x09)+)?(?:\\x22))))@(?:(?:(?:[a-zA-Z]|\\d|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|\\d|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|\\d|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(?:(?:[a-zA-Z]|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|[\\x{00A1}-\\x{167F}\\x{1681}-\\x{1FFF}\\x{200B}-\\x{2027}\\x{2029}-\\x{202E}\\x{2030}-\\x{205E}\\x{2060}-\\x{2FFF}\\x{3001}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
e164RegexString = "^\\+[1-9]?[0-9]{7,14}$"
base32RegexString = "^(?:[A-Z2-7]{8})*(?:[A-Z2-7]{2}={6}|[A-Z2-7]{4}={4}|[A-Z2-7]{5}={3}|[A-Z2-7]{7}=|[A-Z2-7]{8})$"
base64RegexString = "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"
Expand Down
94 changes: 94 additions & 0 deletions validator_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8728,11 +8728,105 @@ func TestEmail(t *testing.T) {
errs = validate.Var(s, "email")
Equal(t, errs, nil)

s = `"test\u00A0test"@email.com` // U+00A0 No-Break Space between quotes
errs = validate.Var(s, "email")
Equal(t, errs, nil)

s = `"@email.com`
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u0020test@example.com" // U+0020 regular space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u00A0test@example.com" // U+00A0 No-Break Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u1680test@example.com" // U+1680 Ogham Space Mark
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2000test@example.com" // U+2000 En Quad
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2001test@example.com" // U+2001 Em Quad
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2002test@example.com" // U+2002 En Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2003test@example.com" // U+2003 Em Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2004test@example.com" // U+2004 Three-Per-Em Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2005test@example.com" // U+2005 Four-Per-Em Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2006test@example.com" // U+2006 Six-Per-Em Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2007test@example.com" // U+2007 Figure Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2008test@example.com" // U+2008 Punctuation Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2009test@example.com" // U+2009 Thin Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u200Atest@example.com" // U+200A Hair Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u2028test@example.com" // U+2028 Line Separator
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u202Ftest@example.com" // U+202F Narrow No-Break Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u205Ftest@example.com" // U+205F Medium Mathematical Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

s = "\u3000test@example.com" // U+3000 Ideographic Space
errs = validate.Var(s, "email")
NotEqual(t, errs, nil)
AssertError(t, errs, "", "", "", "", "email")

i := true
errs = validate.Var(i, "email")
NotEqual(t, errs, nil)
Expand Down