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Create temp file with limited permissions

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AsamK 2026-05-23 14:30:33 +02:00
parent f34b552054
commit 393e1efcd1
1 changed files with 13 additions and 3 deletions
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16
lib/src/main/java/org/asamk/signal/manager/util/IOUtils.java
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@ -21,9 +21,19 @@ import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
public class IOUtils {
public static File createTempFile() throws IOException {
final var tempFile = File.createTempFile("signal-cli_tmp_", ".tmp");
tempFile.deleteOnExit();
return tempFile;
final var prefix = "signal-cli_tmp_";
final var suffix = ".tmp";
try {
Set<PosixFilePermission> perms = EnumSet.of(OWNER_READ, OWNER_WRITE);
var path = Files.createTempFile(prefix, suffix, PosixFilePermissions.asFileAttribute(perms));
var tempFile = path.toFile();
tempFile.deleteOnExit();
return tempFile;
} catch (UnsupportedOperationException e) {
final var tempFile = File.createTempFile(prefix, suffix);
tempFile.deleteOnExit();
return tempFile;
}
}
public static byte[] readFully(InputStream in) throws IOException {