public static List gatherEnterpriseCertsForLocation()

in src/main/java/org/jetbrains/nativecerts/win32/Crypt32ExtUtil.java [87:143]
48 lines of code
10 McCabe index (conditional complexity)

    public static List<X509Certificate> gatherEnterpriseCertsForLocation(int location, String store_name) {
        int flags = location | Crypt32Ext.CERT_STORE_OPEN_EXISTING_FLAG | Crypt32Ext.CERT_STORE_READONLY_FLAG;

        WinCrypt.HCERTSTORE hcertstore =
                Crypt32Ext.INSTANCE.CertOpenStore(
                        new WTypes.LPSTR(new Pointer(Crypt32Ext.CERT_STORE_PROV_SYSTEM_REGISTRY_W)),
                        0,
                        new WinCrypt.HCRYPTPROV_LEGACY(0),
                        flags,
                        new WTypes.LPWSTR(store_name));
        if (hcertstore == null) {
            int errorCode = Native.getLastError();

            if (errorCode == ERROR_NO_MORE_FILES || errorCode == ERROR_FILE_NOT_FOUND) {
                return Collections.emptyList();
            } else {
                throw new Win32Exception(errorCode);
            }
        }

        try {
            List<X509Certificate> result = new ArrayList<>();

            WinCrypt.CERT_CONTEXT.ByReference prev = null;
            while (true) {
                WinCrypt.CERT_CONTEXT.ByReference certificate =
                        Crypt32.INSTANCE.CertEnumCertificatesInStore(
                                hcertstore, prev == null ? null : prev.getPointer());
                if (certificate == null) {
                    int errorCode = Native.getLastError();
                    if (errorCode != CRYPT_E_NOT_FOUND && errorCode != ERROR_NO_MORE_FILES) {
                        throw new Win32Exception(errorCode);
                    }

                    break;
                }

                byte[] bytes = certificate.pbCertEncoded.getByteArray(0, certificate.cbCertEncoded);

                try {
                    X509Certificate x509 = NativeTrustedRootsInternalUtils.parseCertificate(bytes);
                    result.add(x509);
                } catch (Throwable parsingException) {
                    LOGGER.warning(renderExceptionMessage(
                            "Unable to parse one of the certificates" +
                                    "from store '" + store_name + "'",
                            parsingException));
                }

                prev = certificate;
            }

            return result;
        } finally {
            CertCloseStore(hcertstore);
        }
    }