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base64Decode: clearer error message when an invalid character is detected

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Output the offending string in its entirety to provide context.

Closes #8479

(cherry picked from commit dc3ccf02bf)
This commit is contained in:
Brian McGee 2023-07-31 18:40:45 +01:00 committed by Mergify
parent e873d00bda
commit 9d34c6429b
1 changed files with 3 additions and 2 deletions
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5
src/libutil/util.cc
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@ -260,8 +260,9 @@ std::string base64Decode(std::string_view s)
if (c == '\n') continue;
char digit = base64DecodeChars[(unsigned char) c];
if (digit == npos)
throw Error("invalid character in Base64 string: '%c'", c);
if (digit == npos) {
throw Error("invalid character in Base64 string: '%c' in '%s'", c, s.data());
}
bits += 6;
d = d << 6 | digit;