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Refactor expiration date extraction logic in certificate utility to improve handling of ASN.1 date formats. Update to correctly identify and parse "not after" dates for both UTCTime and GeneralizedTime formats.

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This commit is contained in:
Mauricio Siu 2025-04-26 23:37:49 -06:00
parent dc03ba73b3
commit d6daa5677a
1 changed files with 56 additions and 44 deletions
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32
apps/dokploy/components/dashboard/settings/certificates/utils.ts
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@ -13,22 +13,31 @@ export const extractExpirationDate = (certData: string): Date | null => {
bytes[i] = binaryStr.charCodeAt(i);
}
let dateFound = 0;
// ASN.1 tag for UTCTime is 0x17, GeneralizedTime is 0x18
// We need to find the second occurrence of either tag as it's the "not after" (expiration) date
let dateFound = false;
for (let i = 0; i < bytes.length - 2; i++) {
if (bytes[i] === 0x17 || bytes[i] === 0x18) {
const dateType = bytes[i];
const dateLength = bytes[i + 1];
if (typeof dateLength === "undefined") continue;
// Look for sequence containing validity period (0x30)
if (bytes[i] === 0x30) {
// Check next bytes for UTCTime or GeneralizedTime
let j = i + 1;
while (j < bytes.length - 2) {
if (bytes[j] === 0x17 || bytes[j] === 0x18) {
const dateType = bytes[j];
const dateLength = bytes[j + 1];
if (typeof dateLength === "undefined") break;
if (dateFound === 0) {
dateFound++;
i += dateLength + 1;
if (!dateFound) {
// Skip "not before" date
dateFound = true;
j += dateLength + 2;
continue;
}
// Found "not after" date
let dateStr = "";
for (let j = 0; j < dateLength; j++) {
const charCode = bytes[i + 2 + j];
for (let k = 0; k < dateLength; k++) {
const charCode = bytes[j + 2 + k];
if (typeof charCode === "undefined") continue;
dateStr += String.fromCharCode(charCode);
}
@ -61,6 +70,9 @@ export const extractExpirationDate = (certData: string): Date | null => {
),
);
}
j++;
}
}
}
return null;
} catch (error) {