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Handle base64 decoding correctly to avoid panic (#26483)

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Fix the panic if the "base64 secret" is too long.
This commit is contained in:
wxiaoguang
2023-08-14 18:30:16 +08:00
committed by GitHub
parent cafce3b4b5
commit ed1be4ca68
8 changed files with 43 additions and 30 deletions
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14
modules/util/util_test.go
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@ -4,6 +4,7 @@
package util
import (
"encoding/base64"
"regexp"
"strings"
"testing"
@ -233,3 +234,16 @@ func TestToPointer(t *testing.T) {
val123 := 123
assert.False(t, &val123 == ToPointer(val123))
}
func TestBase64FixedDecode(t *testing.T) {
_, err := Base64FixedDecode(base64.RawURLEncoding, []byte("abcd"), 32)
assert.ErrorContains(t, err, "invalid base64 decoded length")
_, err = Base64FixedDecode(base64.RawURLEncoding, []byte(strings.Repeat("a", 64)), 32)
assert.ErrorContains(t, err, "invalid base64 decoded length")
str32 := strings.Repeat("x", 32)
encoded32 := base64.RawURLEncoding.EncodeToString([]byte(str32))
decoded32, err := Base64FixedDecode(base64.RawURLEncoding, []byte(encoded32), 32)
assert.NoError(t, err)
assert.Equal(t, str32, string(decoded32))
}