39 lines
936 B
Go
39 lines
936 B
Go
package va
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import (
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"strings"
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"unicode/utf8"
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"github.com/letsencrypt/boulder/probs"
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)
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// replaceInvalidUTF8 replaces all invalid UTF-8 encodings with
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// Unicode REPLACEMENT CHARACTER.
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func replaceInvalidUTF8(input []byte) string {
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if utf8.Valid(input) {
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return string(input)
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}
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var b strings.Builder
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// Ranging over a string in Go produces runes. When the range keyword
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// encounters an invalid UTF-8 encoding, it returns REPLACEMENT CHARACTER.
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for _, v := range string(input) {
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b.WriteRune(v)
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}
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return b.String()
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}
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// Call replaceInvalidUTF8 on all string fields of a ProblemDetails
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// and return the result.
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func filterProblemDetails(prob *probs.ProblemDetails) *probs.ProblemDetails {
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if prob == nil {
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return nil
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}
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return &probs.ProblemDetails{
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Type: probs.ProblemType(replaceInvalidUTF8([]byte(prob.Type))),
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Detail: replaceInvalidUTF8([]byte(prob.Detail)),
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HTTPStatus: prob.HTTPStatus,
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}
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}
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