Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Limit timestamp string length #4382

Merged
merged 2 commits into from
Sep 1, 2023
Merged

Limit timestamp string length #4382

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
da52155
Limit timestamp string length
dagnir Aug 31, 2023
fbad450
Add test
dagnir Sep 1, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 11 additions & 0 deletions utils/src/main/java/software/amazon/awssdk/utils/DateUtils.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -200,6 +200,8 @@ public static Instant parseUnixTimestampInstant(String dateString) throws Number
if (dateString == null) {
return null;
}

validateTimestampLength(dateString);
BigDecimal dateValue = new BigDecimal(dateString);
return Instant.ofEpochMilli(dateValue.scaleByPowerOfTen(MILLI_SECOND_PRECISION).longValue());
}
Expand All @@ -225,4 +227,13 @@ public static String formatUnixTimestampInstant(Instant instant) {
return dateValue.scaleByPowerOfTen(0 - MILLI_SECOND_PRECISION)
.toPlainString();
}

private static void validateTimestampLength(String timestamp) {
// Helps avoid BigDecimal parsing unnecessarily large numbers, since it's unbounded
// Long has a max value of 9,223,372,036,854,775,807, which is 19 digits. Assume that a valid timestamp is no
// no longer than 20 characters long (+1 for decimal)
if (timestamp.length() > 20) {
throw new RuntimeException("Input timestamp string must be no longer than 20 characters");
}
}
}
Loading