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[samsungtv] fix NPE (#8991)

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Signed-off-by: Jan N. Klug <jan.n.klug@rub.de>
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J-N-K 2020-11-10 08:41:04 +01:00 committed by GitHub
parent afe711994a
commit 643c4059ab
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1 changed files with 8 additions and 7 deletions
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bundles/org.openhab.binding.samsungtv/src/main/java/org/openhab/binding/samsungtv/internal/WakeOnLanUtility.java
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@ -77,18 +77,19 @@ public class WakeOnLanUtility {
String[] cmds = Stream.of(COMMAND.split(" ")).map(arg -> String.format(arg, hostName)).toArray(String[]::new); String[] cmds = Stream.of(COMMAND.split(" ")).map(arg -> String.format(arg, hostName)).toArray(String[]::new);
String response = ExecUtil.executeCommandLineAndWaitResponse(Duration.ofMillis(CMD_TIMEOUT_MS), cmds); String response = ExecUtil.executeCommandLineAndWaitResponse(Duration.ofMillis(CMD_TIMEOUT_MS), cmds);
Matcher matcher = MAC_REGEX.matcher(response);
String macAddress = null; String macAddress = null;
while (matcher.find()) { if (response != null) {
String group = matcher.group(); Matcher matcher = MAC_REGEX.matcher(response);
while (matcher.find()) {
String group = matcher.group();
if (group.length() == 17) { if (group.length() == 17) {
macAddress = group; macAddress = group;
break; break;
}
} }
} }
if (macAddress != null) { if (macAddress != null) {
LOGGER.debug("MAC address of host {} is {}", hostName, macAddress); LOGGER.debug("MAC address of host {} is {}", hostName, macAddress);
} else { } else {