| /* | |
| * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package java.net; | |
| import java.io.IOException; | |
| import java.io.ObjectInputStream; | |
| import java.io.ObjectOutputStream; | |
| import java.io.ObjectStreamField; | |
| import java.io.Serializable; | |
| import java.security.Permission; | |
| import java.security.PermissionCollection; | |
| import java.util.Collections; | |
| import java.util.Enumeration; | |
| import java.util.Locale; | |
| import java.util.Map; | |
| import java.util.StringJoiner; | |
| import java.util.StringTokenizer; | |
| import java.util.Vector; | |
| import java.util.concurrent.ConcurrentHashMap; | |
| import sun.net.util.IPAddressUtil; | |
| import sun.net.PortConfig; | |
| import sun.security.util.RegisteredDomain; | |
| import sun.security.util.SecurityConstants; | |
| import sun.security.util.Debug; | |
| import static jdk.internal.util.Exceptions.filterNonSocketInfo; | |
| import static jdk.internal.util.Exceptions.formatMsg; | |
| /** | |
| * This class represents access to a network via sockets. | |
| * A SocketPermission consists of a | |
| * host specification and a set of "actions" specifying ways to | |
| * connect to that host. The host is specified as | |
| * <pre> | |
| * host = (hostname | IPv4address | iPv6reference) [:portrange] | |
| * portrange = portnumber | -portnumber | portnumber-[portnumber] | |
| * </pre> | |
| * The host is expressed as a DNS name, as a numerical IP address, | |
| * or as "localhost" (for the local machine). | |
| * The wildcard "*" may be included once in a DNS name host | |
| * specification. If it is included, it must be in the leftmost | |
| * position, as in "*.example.com". | |
| * <p> | |
| * The format of the IPv6reference should follow that specified in <a | |
| * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format | |
| * for Literal IPv6 Addresses in URLs</i></a>: | |
| * <pre> | |
| * ipv6reference = "[" IPv6address "]" | |
| *</pre> | |
| * For example, you can construct a SocketPermission instance | |
| * as the following: | |
| * <pre> | |
| * String hostAddress = inetaddress.getHostAddress(); | |
| * if (inetaddress instanceof Inet6Address) { | |
| * sp = new SocketPermission("[" + hostAddress + "]:" + port, action); | |
| * } else { | |
| * sp = new SocketPermission(hostAddress + ":" + port, action); | |
| * } | |
| * </pre> | |
| * or | |
| * <pre> | |
| * String host = url.getHost(); | |
| * sp = new SocketPermission(host + ":" + port, action); | |
| * </pre> | |
| * <p> | |
| * The <A HREF="Inet6Address.html#lform">full uncompressed form</A> of | |
| * an IPv6 literal address is also valid. | |
| * <p> | |
| * The port or portrange is optional. A port specification of the | |
| * form "N-", where <i>N</i> is a port number, signifies all ports | |
| * numbered <i>N</i> and above, while a specification of the | |
| * form "-N" indicates all ports numbered <i>N</i> and below. | |
| * The special port value {@code 0} refers to the entire <i>ephemeral</i> | |
| * port range. This is a fixed range of ports a system may use to | |
| * allocate dynamic ports from. The actual range may be system dependent. | |
| * <p> | |
| * The possible ways to connect to the host are | |
| * <pre> | |
| * accept | |
| * connect | |
| * listen | |
| * resolve | |
| * </pre> | |
| * The "listen" action is only meaningful when used with "localhost" and | |
| * means the ability to bind to a specified port. | |
| * The "resolve" action is implied when any of the other actions are present. | |
| * The action "resolve" refers to host/ip name service lookups. | |
| * <P> | |
| * The actions string is converted to lowercase before processing. | |
| * | |
| * @apiNote | |
| * This permission cannot be used for controlling access to resources | |
| * as the Security Manager is no longer supported. | |
| * | |
| * @spec https://www.rfc-editor.org/info/rfc2732 | |
| * RFC 2732: Format for Literal IPv6 Addresses in URL's | |
| * @see java.security.Permissions | |
| * @see SocketPermission | |
| * | |
| * | |
| * @author Marianne Mueller | |
| * @author Roland Schemers | |
| * @since 1.2 | |
| * | |
| * @serial exclude | |
| */ | |
| public final class SocketPermission extends Permission | |
| implements java.io.Serializable | |
| { | |
| @java.io.Serial | |
| private static final long serialVersionUID = -7204263841984476862L; | |
| /** | |
| * Connect to host:port | |
| */ | |
| private static final int CONNECT = 0x1; | |
| /** | |
| * Listen on host:port | |
| */ | |
| private static final int LISTEN = 0x2; | |
| /** | |
| * Accept a connection from host:port | |
| */ | |
| private static final int ACCEPT = 0x4; | |
| /** | |
| * Resolve DNS queries | |
| */ | |
| private static final int RESOLVE = 0x8; | |
| /** | |
| * No actions | |
| */ | |
| private static final int NONE = 0x0; | |
| /** | |
| * All actions | |
| */ | |
| private static final int ALL = CONNECT|LISTEN|ACCEPT|RESOLVE; | |
| // various port constants | |
| private static final int PORT_MIN = 0; | |
| private static final int PORT_MAX = 65535; | |
| // the actions mask | |
| private transient int mask; | |
| /** | |
| * the actions string. | |
| * | |
| * @serial | |
| */ | |
| private String actions; // Left null as long as possible, then | |
| // created and re-used in the getAction function. | |
| // hostname part as it is passed | |
| private transient String hostname; | |
| // the canonical name of the host | |
| // in the case of "*.foo.com", cname is ".foo.com". | |
| private transient String cname; | |
| // all the IP addresses of the host | |
| private transient InetAddress[] addresses; | |
| // true if the hostname is a wildcard (e.g. "*.example.com") | |
| private transient boolean wildcard; | |
| // true if we were initialized with a single numeric IP address | |
| private transient boolean init_with_ip; | |
| // true if this SocketPermission represents an invalid/unknown host | |
| // used for implies when the delayed lookup has already failed | |
| private transient boolean invalid; | |
| // port range on host | |
| private transient int[] portrange; | |
| private transient boolean defaultDeny = false; | |
| // true if this SocketPermission represents a hostname | |
| // that failed our reverse mapping heuristic test | |
| private transient boolean untrusted; | |
| private transient boolean trusted; | |
| // true if the sun.net.trustNameService system property is set | |
| private static final boolean trustNameService = | |
| Boolean.getBoolean("sun.net.trustNameService"); | |
| private static Debug debug = null; | |
| private static boolean debugInit = false; | |
| // lazy initializer | |
| private static class EphemeralRange { | |
| static final int low = initEphemeralPorts("low"); | |
| static final int high = initEphemeralPorts("high"); | |
| } | |
| private static synchronized Debug getDebug() { | |
| if (!debugInit) { | |
| debug = Debug.getInstance("access"); | |
| debugInit = true; | |
| } | |
| return debug; | |
| } | |
| /** | |
| * Creates a new SocketPermission object with the specified actions. | |
| * The host is expressed as a DNS name, or as a numerical IP address. | |
| * Optionally, a port or a portrange may be supplied (separated | |
| * from the DNS name or IP address by a colon). | |
| * <p> | |
| * To specify the local machine, use "localhost" as the <i>host</i>. | |
| * Also note: An empty <i>host</i> String ("") is equivalent to "localhost". | |
| * <p> | |
| * The <i>actions</i> parameter contains a comma-separated list of the | |
| * actions granted for the specified host (and port(s)). Possible actions are | |
| * "connect", "listen", "accept", "resolve", or | |
| * any combination of those. "resolve" is automatically added | |
| * when any of the other three are specified. | |
| * <p> | |
| * Examples of SocketPermission instantiation are the following: | |
| * <pre> | |
| * nr = new SocketPermission("www.example.com", "connect"); | |
| * nr = new SocketPermission("www.example.com:80", "connect"); | |
| * nr = new SocketPermission("*.example.com", "connect"); | |
| * nr = new SocketPermission("*.edu", "resolve"); | |
| * nr = new SocketPermission("204.160.241.0", "connect"); | |
| * nr = new SocketPermission("localhost:1024-65535", "listen"); | |
| * nr = new SocketPermission("204.160.241.0:1024-65535", "connect"); | |
| * </pre> | |
| * | |
| * @param host the hostname or IP address of the computer, optionally | |
| * including a colon followed by a port or port range. | |
| * @param action the action string. | |
| * | |
| * @throws NullPointerException if any parameters are null | |
| * @throws IllegalArgumentException if the format of {@code host} is | |
| * invalid, or if the {@code action} string is empty, malformed, or | |
| * contains an action other than the specified possible actions | |
| */ | |
| public SocketPermission(String host, String action) { | |
| super(getHost(host)); | |
| // name initialized to getHost(host); NPE detected in getHost() | |
| init(getName(), getMask(action)); | |
| } | |
| SocketPermission(String host, int mask) { | |
| super(getHost(host)); | |
| // name initialized to getHost(host); NPE detected in getHost() | |
| init(getName(), mask); | |
| } | |
| private void setDeny() { | |
| defaultDeny = true; | |
| } | |
| private static String getHost(String host) { | |
| if (host.isEmpty()) { | |
| return "localhost"; | |
| } else { | |
| /* IPv6 literal address used in this context should follow | |
| * the format specified in RFC 2732; | |
| * if not, we try to solve the unambiguous case | |
| */ | |
| int ind; | |
| if (host.charAt(0) != '[') { | |
| if ((ind = host.indexOf(':')) != host.lastIndexOf(':')) { | |
| /* More than one ":", meaning IPv6 address is not | |
| * in RFC 2732 format; | |
| * We will rectify user errors for all unambiguous cases | |
| */ | |
| StringTokenizer st = new StringTokenizer(host, ":"); | |
| int tokens = st.countTokens(); | |
| if (tokens == 9) { | |
| // IPv6 address followed by port | |
| ind = host.lastIndexOf(':'); | |
| host = "[" + host.substring(0, ind) + "]" + | |
| host.substring(ind); | |
| } else if (tokens == 8 && !host.contains("::")) { | |
| // IPv6 address only, not followed by port | |
| host = "[" + host + "]"; | |
| } else { | |
| // could be ambiguous | |
| throw new IllegalArgumentException("Ambiguous"+ | |
| " hostport part"); | |
| } | |
| } | |
| } | |
| return host; | |
| } | |
| } | |
| private int[] parsePort(String port) { | |
| if (port == null || port.isEmpty() || port.equals("*")) { | |
| return new int[] {PORT_MIN, PORT_MAX}; | |
| } | |
| int dash = port.indexOf('-'); | |
| if (dash == -1) { | |
| int p = Integer.parseInt(port); | |
| return new int[] {p, p}; | |
| } else { | |
| String low = port.substring(0, dash); | |
| String high = port.substring(dash+1); | |
| int l,h; | |
| if (low.isEmpty()) { | |
| l = PORT_MIN; | |
| } else { | |
| l = Integer.parseInt(low); | |
| } | |
| if (high.isEmpty()) { | |
| h = PORT_MAX; | |
| } else { | |
| h = Integer.parseInt(high); | |
| } | |
| if (l < 0 || h < 0 || h<l) | |
| throw new IllegalArgumentException("invalid port range"); | |
| return new int[] {l, h}; | |
| } | |
| } | |
| /** | |
| * Returns true if the permission has specified zero | |
| * as its value (or lower bound) signifying the ephemeral range | |
| */ | |
| private boolean includesEphemerals() { | |
| return portrange[0] == 0; | |
| } | |
| /** | |
| * Initialize the SocketPermission object. We don't do any DNS lookups | |
| * as this point, instead we hold off until the implies method is | |
| * called. | |
| */ | |
| private void init(String host, int mask) { | |
| // Set the integer mask that represents the actions | |
| if ((mask & ALL) != mask) | |
| throw new IllegalArgumentException("invalid actions mask"); | |
| // always OR in RESOLVE if we allow any of the others | |
| this.mask = mask | RESOLVE; | |
| // Parse the host name. A name has up to three components, the | |
| // hostname, a port number, or two numbers representing a port | |
| // range. "www.example.com:8080-9090" is a valid host name. | |
| // With IPv6 an address can be 2010:836B:4179::836B:4179 | |
| // An IPv6 address needs to be enclose in [] | |
| // For ex: [2010:836B:4179::836B:4179]:8080-9090 | |
| // Refer to RFC 2732 for more information. | |
| int rb = 0 ; | |
| int start = 0, end = 0; | |
| int sep = -1; | |
| String hostport = host; | |
| if (host.charAt(0) == '[') { | |
| start = 1; | |
| rb = host.indexOf(']'); | |
| if (rb != -1) { | |
| host = host.substring(start, rb); | |
| } else { | |
| throw new IllegalArgumentException( | |
| formatMsg("invalid host/port%s", filterNonSocketInfo(host).prefixWith(": "))); | |
| } | |
| sep = hostport.indexOf(':', rb+1); | |
| } else { | |
| start = 0; | |
| sep = host.indexOf(':', rb); | |
| end = sep; | |
| if (sep != -1) { | |
| host = host.substring(start, end); | |
| } | |
| } | |
| if (sep != -1) { | |
| String port = hostport.substring(sep+1); | |
| try { | |
| portrange = parsePort(port); | |
| } catch (Exception e) { | |
| throw new IllegalArgumentException( | |
| formatMsg("invalid port range%s", filterNonSocketInfo(port).prefixWith(": "))); | |
| } | |
| } else { | |
| portrange = new int[] { PORT_MIN, PORT_MAX }; | |
| } | |
| hostname = host; | |
| // is this a domain wildcard specification | |
| if (host.lastIndexOf('*') > 0) { | |
| throw new | |
| IllegalArgumentException("invalid host wildcard specification"); | |
| } else if (host.startsWith("*")) { | |
| wildcard = true; | |
| if (host.equals("*")) { | |
| cname = ""; | |
| } else if (host.startsWith("*.")) { | |
| cname = host.substring(1).toLowerCase(Locale.ROOT); | |
| } else { | |
| throw new | |
| IllegalArgumentException("invalid host wildcard specification"); | |
| } | |
| return; | |
| } else { | |
| if (!host.isEmpty()) { | |
| // see if we are being initialized with an IP address. | |
| char ch = host.charAt(0); | |
| if (ch == ':' || IPAddressUtil.digit(ch, 16) != -1) { | |
| byte[] ip = IPAddressUtil.textToNumericFormatV4(host); | |
| if (ip == null) { | |
| ip = IPAddressUtil.textToNumericFormatV6(host); | |
| } | |
| if (ip != null) { | |
| try { | |
| addresses = | |
| new InetAddress[] | |
| {InetAddress.getByAddress(ip) }; | |
| init_with_ip = true; | |
| } catch (UnknownHostException uhe) { | |
| // this shouldn't happen | |
| invalid = true; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| /** | |
| * Convert an action string to an integer actions mask. | |
| * | |
| * @param action the action string | |
| * @return the action mask | |
| */ | |
| private static int getMask(String action) { | |
| if (action == null) { | |
| throw new NullPointerException("action can't be null"); | |
| } | |
| if (action.isEmpty()) { | |
| throw new IllegalArgumentException("action can't be empty"); | |
| } | |
| int mask = NONE; | |
| // Use object identity comparison against known-interned strings for | |
| // performance benefit (these values are used heavily within the JDK). | |
| if (action == SecurityConstants.SOCKET_RESOLVE_ACTION) { | |
| return RESOLVE; | |
| } else if (action == SecurityConstants.SOCKET_CONNECT_ACTION) { | |
| return CONNECT; | |
| } else if (action == SecurityConstants.SOCKET_LISTEN_ACTION) { | |
| return LISTEN; | |
| } else if (action == SecurityConstants.SOCKET_ACCEPT_ACTION) { | |
| return ACCEPT; | |
| } else if (action == SecurityConstants.SOCKET_CONNECT_ACCEPT_ACTION) { | |
| return CONNECT|ACCEPT; | |
| } | |
| char[] a = action.toCharArray(); | |
| int i = a.length - 1; | |
| while (i != -1) { | |
| char c; | |
| // skip whitespace | |
| while ((i!=-1) && ((c = a[i]) == ' ' || | |
| c == '\r' || | |
| c == '\n' || | |
| c == '\f' || | |
| c == '\t')) | |
| i--; | |
| // check for the known strings | |
| int matchlen; | |
| if (i >= 6 && (a[i-6] == 'c' || a[i-6] == 'C') && | |
| (a[i-5] == 'o' || a[i-5] == 'O') && | |
| (a[i-4] == 'n' || a[i-4] == 'N') && | |
| (a[i-3] == 'n' || a[i-3] == 'N') && | |
| (a[i-2] == 'e' || a[i-2] == 'E') && | |
| (a[i-1] == 'c' || a[i-1] == 'C') && | |
| (a[i] == 't' || a[i] == 'T')) | |
| { | |
| matchlen = 7; | |
| mask |= CONNECT; | |
| } else if (i >= 6 && (a[i-6] == 'r' || a[i-6] == 'R') && | |
| (a[i-5] == 'e' || a[i-5] == 'E') && | |
| (a[i-4] == 's' || a[i-4] == 'S') && | |
| (a[i-3] == 'o' || a[i-3] == 'O') && | |
| (a[i-2] == 'l' || a[i-2] == 'L') && | |
| (a[i-1] == 'v' || a[i-1] == 'V') && | |
| (a[i] == 'e' || a[i] == 'E')) | |
| { | |
| matchlen = 7; | |
| mask |= RESOLVE; | |
| } else if (i >= 5 && (a[i-5] == 'l' || a[i-5] == 'L') && | |
| (a[i-4] == 'i' || a[i-4] == 'I') && | |
| (a[i-3] == 's' || a[i-3] == 'S') && | |
| (a[i-2] == 't' || a[i-2] == 'T') && | |
| (a[i-1] == 'e' || a[i-1] == 'E') && | |
| (a[i] == 'n' || a[i] == 'N')) | |
| { | |
| matchlen = 6; | |
| mask |= LISTEN; | |
| } else if (i >= 5 && (a[i-5] == 'a' || a[i-5] == 'A') && | |
| (a[i-4] == 'c' || a[i-4] == 'C') && | |
| (a[i-3] == 'c' || a[i-3] == 'C') && | |
| (a[i-2] == 'e' || a[i-2] == 'E') && | |
| (a[i-1] == 'p' || a[i-1] == 'P') && | |
| (a[i] == 't' || a[i] == 'T')) | |
| { | |
| matchlen = 6; | |
| mask |= ACCEPT; | |
| } else { | |
| // parse error | |
| throw new IllegalArgumentException( | |
| "invalid permission: " + action); | |
| } | |
| // make sure we didn't just match the tail of a word | |
| // like "ackbarfaccept". Also, skip to the comma. | |
| boolean seencomma = false; | |
| while (i >= matchlen && !seencomma) { | |
| switch (c = a[i-matchlen]) { | |
| case ' ': case '\r': case '\n': | |
| case '\f': case '\t': | |
| break; | |
| default: | |
| if (c == ',' && i > matchlen) { | |
| seencomma = true; | |
| break; | |
| } | |
| throw new IllegalArgumentException( | |
| "invalid permission: " + action); | |
| } | |
| i--; | |
| } | |
| // point i at the location of the comma minus one (or -1). | |
| i -= matchlen; | |
| } | |
| return mask; | |
| } | |
| private boolean isUntrusted() | |
| throws UnknownHostException | |
| { | |
| if (trusted) return false; | |
| if (invalid || untrusted) return true; | |
| try { | |
| if (!trustNameService && (defaultDeny || | |
| sun.net.www.URLConnection.isProxiedHost(hostname))) { | |
| if (this.cname == null) { | |
| this.getCanonName(); | |
| } | |
| if (!match(cname, hostname)) { | |
| // Last chance | |
| if (!authorized(addresses[0].getAddress())) { | |
| untrusted = true; | |
| Debug debug = getDebug(); | |
| if (debug != null && Debug.isOn("failure")) { | |
| debug.println("socket access restriction: proxied host " + "(" + addresses[0] + ")" + " does not match " + cname + " from reverse lookup"); | |
| } | |
| return true; | |
| } | |
| } | |
| trusted = true; | |
| } | |
| } catch (UnknownHostException uhe) { | |
| invalid = true; | |
| throw uhe; | |
| } | |
| return false; | |
| } | |
| /** | |
| * attempt to get the fully qualified domain name | |
| * | |
| */ | |
| void getCanonName() | |
| throws UnknownHostException | |
| { | |
| if (cname != null || invalid || untrusted) return; | |
| // attempt to get the canonical name | |
| try { | |
| // first get the IP addresses if we don't have them yet | |
| // this is because we need the IP address to then get | |
| // FQDN. | |
| if (addresses == null) { | |
| getIP(); | |
| } | |
| // we have to do this check, otherwise we might not | |
| // get the fully qualified domain name | |
| if (init_with_ip) { | |
| cname = addresses[0].getHostName().toLowerCase(Locale.ROOT); | |
| } else { | |
| cname = InetAddress.getByName(addresses[0].getHostAddress()). | |
| getHostName().toLowerCase(Locale.ROOT); | |
| } | |
| } catch (UnknownHostException uhe) { | |
| invalid = true; | |
| throw uhe; | |
| } | |
| } | |
| private transient String cdomain, hdomain; | |
| /** | |
| * previously we allowed domain names to be specified in IDN ACE form | |
| * Need to check for that and convert to Unicode | |
| */ | |
| private static String checkForIDN(String name) { | |
| if (name.startsWith("xn--") || name.contains(".xn--")) { | |
| return IDN.toUnicode(name); | |
| } else { | |
| return name; | |
| } | |
| } | |
| private boolean match(String cname, String hname) { | |
| String a = checkForIDN(cname.toLowerCase(Locale.ROOT)); | |
| String b = checkForIDN(hname.toLowerCase(Locale.ROOT)); | |
| if (a.startsWith(b) && | |
| ((a.length() == b.length()) || (a.charAt(b.length()) == '.'))) { | |
| return true; | |
| } | |
| if (cdomain == null) { | |
| cdomain = RegisteredDomain.from(a) | |
| .map(RegisteredDomain::name) | |
| .orElse(a); | |
| } | |
| if (hdomain == null) { | |
| hdomain = RegisteredDomain.from(b) | |
| .map(RegisteredDomain::name) | |
| .orElse(b); | |
| } | |
| return !cdomain.isEmpty() && !hdomain.isEmpty() && cdomain.equals(hdomain); | |
| } | |
| private boolean authorized(byte[] addr) { | |
| if (addr.length == 4) | |
| return authorizedIPv4(addr); | |
| else if (addr.length == 16) | |
| return authorizedIPv6(addr); | |
| else | |
| return false; | |
| } | |
| private boolean authorizedIPv4(byte[] addr) { | |
| String authHost = ""; | |
| InetAddress auth; | |
| try { | |
| authHost = "auth." + | |
| (addr[3] & 0xff) + "." + (addr[2] & 0xff) + "." + | |
| (addr[1] & 0xff) + "." + (addr[0] & 0xff) + | |
| ".in-addr.arpa"; | |
| // Following check seems unnecessary | |
| // auth = InetAddress.getAllByName0(authHost, false)[0]; | |
| authHost = hostname + '.' + authHost; | |
| auth = InetAddress.getAllByName0(authHost)[0]; | |
| if (auth.equals(InetAddress.getByAddress(addr))) { | |
| return true; | |
| } | |
| Debug debug = getDebug(); | |
| if (debug != null && Debug.isOn("failure")) { | |
| debug.println("socket access restriction: IP address of " + auth + " != " + InetAddress.getByAddress(addr)); | |
| } | |
| } catch (UnknownHostException uhe) { | |
| Debug debug = getDebug(); | |
| if (debug != null && Debug.isOn("failure")) { | |
| debug.println("socket access restriction: forward lookup failed for " + authHost); | |
| } | |
| } | |
| return false; | |
| } | |
| private boolean authorizedIPv6(byte[] addr) { | |
| String authHost = ""; | |
| InetAddress auth; | |
| try { | |
| StringBuilder sb = new StringBuilder(39); | |
| for (int i = 15; i >= 0; i--) { | |
| sb.append(Integer.toHexString(((addr[i]) & 0x0f))); | |
| sb.append('.'); | |
| sb.append(Integer.toHexString(((addr[i] >> 4) & 0x0f))); | |
| sb.append('.'); | |
| } | |
| authHost = "auth." + sb.toString() + "IP6.ARPA"; | |
| authHost = hostname + '.' + authHost; | |
| auth = InetAddress.getAllByName0(authHost)[0]; | |
| if (auth.equals(InetAddress.getByAddress(addr))) | |
| return true; | |
| Debug debug = getDebug(); | |
| if (debug != null && Debug.isOn("failure")) { | |
| debug.println("socket access restriction: IP address of " + auth + " != " + InetAddress.getByAddress(addr)); | |
| } | |
| } catch (UnknownHostException uhe) { | |
| Debug debug = getDebug(); | |
| if (debug != null && Debug.isOn("failure")) { | |
| debug.println("socket access restriction: forward lookup failed for " + authHost); | |
| } | |
| } | |
| return false; | |
| } | |
| /** | |
| * get IP addresses. Sets invalid to true if we can't get them. | |
| * | |
| */ | |
| void getIP() | |
| throws UnknownHostException | |
| { | |
| if (addresses != null || wildcard || invalid) return; | |
| try { | |
| // now get all the IP addresses | |
| String host; | |
| if (getName().charAt(0) == '[') { | |
| // Literal IPv6 address | |
| host = getName().substring(1, getName().indexOf(']')); | |
| } else { | |
| int i = getName().indexOf(':'); | |
| if (i == -1) | |
| host = getName(); | |
| else { | |
| host = getName().substring(0,i); | |
| } | |
| } | |
| addresses = | |
| new InetAddress[] {InetAddress.getAllByName0(host)[0]}; | |
| } catch (UnknownHostException uhe) { | |
| invalid = true; | |
| throw uhe; | |
| } catch (IndexOutOfBoundsException iobe) { | |
| invalid = true; | |
| throw new UnknownHostException(formatMsg("%s", filterNonSocketInfo(getName()))); | |
| } | |
| } | |
| /** | |
| * Checks if this socket permission object "implies" the | |
| * specified permission. | |
| * <P> | |
| * More specifically, this method first ensures that all of the following | |
| * are true (and returns false if any of them are not): | |
| * <ul> | |
| * <li> <i>p</i> is an instanceof SocketPermission, | |
| * <li> <i>p</i>'s actions are a proper subset of this | |
| * object's actions, and | |
| * <li> <i>p</i>'s port range is included in this port range. Note: | |
| * port range is ignored when p only contains the action, 'resolve'. | |
| * </ul> | |
| * | |
| * Then {@code implies} checks each of the following, in order, | |
| * and for each returns true if the stated condition is true: | |
| * <ul> | |
| * <li> If this object was initialized with a single IP address and one of <i>p</i>'s | |
| * IP addresses is equal to this object's IP address. | |
| * <li>If this object is a wildcard domain (such as *.example.com), and | |
| * <i>p</i>'s canonical name (the name without any preceding *) | |
| * ends with this object's canonical host name. For example, *.example.com | |
| * implies *.foo.example.com. | |
| * <li>If this object was not initialized with a single IP address, and one of this | |
| * object's IP addresses equals one of <i>p</i>'s IP addresses. | |
| * <li>If this canonical name equals <i>p</i>'s canonical name. | |
| * </ul> | |
| * | |
| * If none of the above are true, {@code implies} returns false. | |
| * @param p the permission to check against. | |
| * | |
| * @return true if the specified permission is implied by this object, | |
| * false if not. | |
| */ | |
| @Override | |
| public boolean implies(Permission p) { | |
| if (!(p instanceof SocketPermission that)) | |
| return false; | |
| if (p == this) | |
| return true; | |
| return ((this.mask & that.mask) == that.mask) && | |
| impliesIgnoreMask(that); | |
| } | |
| /** | |
| * Checks if the incoming Permission's action are a proper subset of | |
| * this object's actions. | |
| * <P> | |
| * Check, in the following order: | |
| * <ul> | |
| * <li> Checks that "p" is an instanceof a SocketPermission | |
| * <li> Checks that "p"'s actions are a proper subset of the | |
| * current object's actions. | |
| * <li> Checks that "p"'s port range is included in this port range | |
| * <li> If this object was initialized with an IP address, checks that | |
| * one of "p"'s IP addresses is equal to this object's IP address. | |
| * <li> If either object is a wildcard domain (i.e., "*.example.com"), | |
| * attempt to match based on the wildcard. | |
| * <li> If this object was not initialized with an IP address, attempt | |
| * to find a match based on the IP addresses in both objects. | |
| * <li> Attempt to match on the canonical hostnames of both objects. | |
| * </ul> | |
| * @param that the incoming permission request | |
| * | |
| * @return true if "permission" is a proper subset of the current object, | |
| * false if not. | |
| */ | |
| boolean impliesIgnoreMask(SocketPermission that) { | |
| int i,j; | |
| if ((that.mask & RESOLVE) != that.mask) { | |
| // check simple port range | |
| if ((that.portrange[0] < this.portrange[0]) || | |
| (that.portrange[1] > this.portrange[1])) { | |
| // if either includes the ephemeral range, do full check | |
| if (this.includesEphemerals() || that.includesEphemerals()) { | |
| if (!inRange(this.portrange[0], this.portrange[1], | |
| that.portrange[0], that.portrange[1])) | |
| { | |
| return false; | |
| } | |
| } else { | |
| return false; | |
| } | |
| } | |
| } | |
| // allow a "*" wildcard to always match anything | |
| if (this.wildcard && "".equals(this.cname)) | |
| return true; | |
| // return if either one of these NetPerm objects are invalid... | |
| if (this.invalid || that.invalid) { | |
| return compareHostnames(that); | |
| } | |
| try { | |
| if (this.init_with_ip) { // we only check IP addresses | |
| if (that.wildcard) | |
| return false; | |
| if (that.init_with_ip) { | |
| return (this.addresses[0].equals(that.addresses[0])); | |
| } else { | |
| if (that.addresses == null) { | |
| that.getIP(); | |
| } | |
| for (i=0; i < that.addresses.length; i++) { | |
| if (this.addresses[0].equals(that.addresses[i])) | |
| return true; | |
| } | |
| } | |
| // since "this" was initialized with an IP address, we | |
| // don't check any other cases | |
| return false; | |
| } | |
| // check and see if we have any wildcards... | |
| if (this.wildcard || that.wildcard) { | |
| // if they are both wildcards, return true iff | |
| // that's cname ends with this cname (i.e., *.example.com | |
| // implies *.foo.example.com) | |
| if (this.wildcard && that.wildcard) | |
| return (that.cname.endsWith(this.cname)); | |
| // a non-wildcard can't imply a wildcard | |
| if (that.wildcard) | |
| return false; | |
| // this is a wildcard, lets see if that's cname ends with | |
| // it... | |
| if (that.cname == null) { | |
| that.getCanonName(); | |
| } | |
| return (that.cname.endsWith(this.cname)); | |
| } | |
| // compare IP addresses | |
| if (this.addresses == null) { | |
| this.getIP(); | |
| } | |
| if (that.addresses == null) { | |
| that.getIP(); | |
| } | |
| if (!(that.init_with_ip && this.isUntrusted())) { | |
| for (j = 0; j < this.addresses.length; j++) { | |
| for (i=0; i < that.addresses.length; i++) { | |
| if (this.addresses[j].equals(that.addresses[i])) | |
| return true; | |
| } | |
| } | |
| // XXX: if all else fails, compare hostnames? | |
| // Do we really want this? | |
| if (this.cname == null) { | |
| this.getCanonName(); | |
| } | |
| if (that.cname == null) { | |
| that.getCanonName(); | |
| } | |
| return (this.cname.equalsIgnoreCase(that.cname)); | |
| } | |
| } catch (UnknownHostException uhe) { | |
| return compareHostnames(that); | |
| } | |
| // make sure the first thing that is done here is to return | |
| // false. If not, uncomment the return false in the above catch. | |
| return false; | |
| } | |
| private boolean compareHostnames(SocketPermission that) { | |
| // we see if the original names/IPs passed in were equal. | |
| String thisHost = hostname; | |
| String thatHost = that.hostname; | |
| if (thisHost == null) { | |
| return false; | |
| } else if (this.wildcard) { | |
| final int cnameLength = this.cname.length(); | |
| return thatHost.regionMatches(true, | |
| (thatHost.length() - cnameLength), | |
| this.cname, 0, cnameLength); | |
| } else { | |
| return thisHost.equalsIgnoreCase(thatHost); | |
| } | |
| } | |
| /** | |
| * Checks two SocketPermission objects for equality. | |
| * | |
| * @param obj the object to test for equality with this object. | |
| * | |
| * @return true if <i>obj</i> is a SocketPermission, and has the | |
| * same hostname, port range, and actions as this | |
| * SocketPermission object. However, port range will be ignored | |
| * in the comparison if <i>obj</i> only contains the action, 'resolve'. | |
| */ | |
| @Override | |
| public boolean equals(Object obj) { | |
| if (obj == this) | |
| return true; | |
| if (! (obj instanceof SocketPermission that)) | |
| return false; | |
| //this is (overly?) complex!!! | |
| // check the mask first | |
| if (this.mask != that.mask) return false; | |
| if ((that.mask & RESOLVE) != that.mask) { | |
| // now check the port range... | |
| if ((this.portrange[0] != that.portrange[0]) || | |
| (this.portrange[1] != that.portrange[1])) { | |
| return false; | |
| } | |
| } | |
| // short cut. This catches: | |
| // "crypto" equal to "crypto", or | |
| // "1.2.3.4" equal to "1.2.3.4.", or | |
| // "*.edu" equal to "*.edu", but it | |
| // does not catch "crypto" equal to | |
| // "crypto.foo.example.com". | |
| if (this.getName().equalsIgnoreCase(that.getName())) { | |
| return true; | |
| } | |
| // we now attempt to get the Canonical (FQDN) name and | |
| // compare that. If this fails, about all we can do is return | |
| // false. | |
| try { | |
| this.getCanonName(); | |
| that.getCanonName(); | |
| } catch (UnknownHostException uhe) { | |
| return false; | |
| } | |
| if (this.invalid || that.invalid) | |
| return false; | |
| if (this.cname != null) { | |
| return this.cname.equalsIgnoreCase(that.cname); | |
| } | |
| return false; | |
| } | |
| /** | |
| * Returns the hash code value for this object. | |
| * | |
| * @return a hash code value for this object. | |
| */ | |
| @Override | |
| public int hashCode() { | |
| /* | |
| * If this SocketPermission was initialized with an IP address | |
| * or a wildcard, use getName().hashCode(), otherwise use | |
| * the hashCode() of the host name returned from | |
| * java.net.InetAddress.getHostName method. | |
| */ | |
| if (init_with_ip || wildcard) { | |
| return this.getName().hashCode(); | |
| } | |
| try { | |
| getCanonName(); | |
| } catch (UnknownHostException uhe) { | |
| } | |
| if (invalid || cname == null) | |
| return this.getName().hashCode(); | |
| else | |
| return this.cname.hashCode(); | |
| } | |
| /** | |
| * Return the current action mask. | |
| * | |
| * @return the actions mask. | |
| */ | |
| int getMask() { | |
| return mask; | |
| } | |
| /** | |
| * Returns the "canonical string representation" of the actions in the | |
| * specified mask. | |
| * Always returns present actions in the following order: | |
| * connect, listen, accept, resolve. | |
| * | |
| * @param mask a specific integer action mask to translate into a string | |
| * @return the canonical string representation of the actions | |
| */ | |
| private static String getActions(int mask) { | |
| StringJoiner sj = new StringJoiner(","); | |
| if ((mask & CONNECT) == CONNECT) { | |
| sj.add("connect"); | |
| } | |
| if ((mask & LISTEN) == LISTEN) { | |
| sj.add("listen"); | |
| } | |
| if ((mask & ACCEPT) == ACCEPT) { | |
| sj.add("accept"); | |
| } | |
| if ((mask & RESOLVE) == RESOLVE) { | |
| sj.add("resolve"); | |
| } | |
| return sj.toString(); | |
| } | |
| /** | |
| * Returns the canonical string representation of the actions. | |
| * Always returns present actions in the following order: | |
| * connect, listen, accept, resolve. | |
| * | |
| * @return the canonical string representation of the actions. | |
| */ | |
| @Override | |
| public String getActions() | |
| { | |
| if (actions == null) | |
| actions = getActions(this.mask); | |
| return actions; | |
| } | |
| /** | |
| * Returns a new PermissionCollection object for storing SocketPermission | |
| * objects. | |
| * <p> | |
| * SocketPermission objects must be stored in a manner that allows them | |
| * to be inserted into the collection in any order, but that also enables the | |
| * PermissionCollection {@code implies} | |
| * method to be implemented in an efficient (and consistent) manner. | |
| * | |
| * @return a new PermissionCollection object suitable for storing SocketPermissions. | |
| */ | |
| @Override | |
| public PermissionCollection newPermissionCollection() { | |
| return new SocketPermissionCollection(); | |
| } | |
| /** | |
| * {@code writeObject} is called to save the state of the | |
| * {@code SocketPermission} to a stream. The actions are serialized, | |
| * and the superclass takes care of the name. | |
| * | |
| * @param s the {@code ObjectOutputStream} to which data is written | |
| * @throws IOException if an I/O error occurs | |
| */ | |
| @java.io.Serial | |
| private synchronized void writeObject(java.io.ObjectOutputStream s) | |
| throws IOException | |
| { | |
| // Write out the actions. The superclass takes care of the name | |
| // call getActions to make sure actions field is initialized | |
| if (actions == null) | |
| getActions(); | |
| s.defaultWriteObject(); | |
| } | |
| /** | |
| * {@code readObject} is called to restore the state of the | |
| * {@code SocketPermission} from a stream. | |
| * | |
| * @param s the {@code ObjectInputStream} from which data is read | |
| * @throws IOException if an I/O error occurs | |
| * @throws ClassNotFoundException if a serialized class cannot be loaded | |
| */ | |
| @java.io.Serial | |
| private synchronized void readObject(java.io.ObjectInputStream s) | |
| throws IOException, ClassNotFoundException | |
| { | |
| // Read in the action, then initialize the rest | |
| s.defaultReadObject(); | |
| init(getName(),getMask(actions)); | |
| } | |
| /** | |
| * Check the system/security property for the ephemeral port range | |
| * for this system. The suffix is either "high" or "low" | |
| */ | |
| private static int initEphemeralPorts(String suffix) { | |
| int val = Integer.getInteger( | |
| "jdk.net.ephemeralPortRange." + suffix, -1); | |
| if (val != -1) { | |
| return val; | |
| } else { | |
| return suffix.equals("low") ? | |
| PortConfig.getLower() : PortConfig.getUpper(); | |
| } | |
| } | |
| /** | |
| * Check if the target range is within the policy range | |
| * together with the ephemeral range for this platform | |
| * (if policy includes ephemeral range) | |
| */ | |
| private static boolean inRange( | |
| int policyLow, int policyHigh, int targetLow, int targetHigh | |
| ) | |
| { | |
| final int ephemeralLow = EphemeralRange.low; | |
| final int ephemeralHigh = EphemeralRange.high; | |
| if (targetLow == 0) { | |
| // check policy includes ephemeral range | |
| if (!inRange(policyLow, policyHigh, ephemeralLow, ephemeralHigh)) { | |
| return false; | |
| } | |
| if (targetHigh == 0) { | |
| // nothing left to do | |
| return true; | |
| } | |
| // continue check with first real port number | |
| targetLow = 1; | |
| } | |
| if (policyLow == 0 && policyHigh == 0) { | |
| // ephemeral range only | |
| return targetLow >= ephemeralLow && targetHigh <= ephemeralHigh; | |
| } | |
| if (policyLow != 0) { | |
| // simple check of policy only | |
| return targetLow >= policyLow && targetHigh <= policyHigh; | |
| } | |
| // policyLow == 0 which means possibly two ranges to check | |
| // first check if policy and ephem range overlap/contiguous | |
| if (policyHigh >= ephemeralLow - 1) { | |
| return targetHigh <= ephemeralHigh; | |
| } | |
| // policy and ephem range do not overlap | |
| // target range must lie entirely inside policy range or eph range | |
| return (targetLow <= policyHigh && targetHigh <= policyHigh) || | |
| (targetLow >= ephemeralLow && targetHigh <= ephemeralHigh); | |
| } | |
| /* | |
| public String toString() | |
| { | |
| StringBuilder s = new StringBuilder(super.toString() + "\n" + | |
| "cname = " + cname + "\n" + | |
| "wildcard = " + wildcard + "\n" + | |
| "invalid = " + invalid + "\n" + | |
| "portrange = " + portrange[0] + "," + portrange[1] + "\n"); | |
| if (addresses != null) for (int i=0; i<addresses.length; i++) { | |
| s.append( addresses[i].getHostAddress()); | |
| s.append("\n"); | |
| } else { | |
| s.append("(no addresses)\n"); | |
| } | |
| return s.toString(); | |
| } | |
| public static void main(String args[]) throws Exception { | |
| SocketPermission this_ = new SocketPermission(args[0], "connect"); | |
| SocketPermission that_ = new SocketPermission(args[1], "connect"); | |
| System.out.println("-----\n"); | |
| System.out.println("this.implies(that) = " + this_.implies(that_)); | |
| System.out.println("-----\n"); | |
| System.out.println("this = "+this_); | |
| System.out.println("-----\n"); | |
| System.out.println("that = "+that_); | |
| System.out.println("-----\n"); | |
| SocketPermissionCollection nps = new SocketPermissionCollection(); | |
| nps.add(this_); | |
| nps.add(new SocketPermission("www-leland.stanford.edu","connect")); | |
| nps.add(new SocketPermission("www-example.com","connect")); | |
| System.out.println("nps.implies(that) = " + nps.implies(that_)); | |
| System.out.println("-----\n"); | |
| } | |
| */ | |
| } | |
| /** | |
| if (init'd with IP, key is IP as string) | |
| if wildcard, its the wild card | |
| else its the cname? | |
| * | |
| * @see java.security.Permission | |
| * @see java.security.Permissions | |
| * @see java.security.PermissionCollection | |
| * | |
| * | |
| * @author Roland Schemers | |
| * | |
| * @serial include | |
| */ | |
| final class SocketPermissionCollection extends PermissionCollection | |
| implements Serializable | |
| { | |
| // Not serialized; see serialization section at end of class | |
| private transient Map<String, SocketPermission> perms; | |
| /** | |
| * Create an empty SocketPermissionCollection object. | |
| */ | |
| public SocketPermissionCollection() { | |
| perms = new ConcurrentHashMap<>(); | |
| } | |
| /** | |
| * Adds a permission to the SocketPermissions. The key for the hash is | |
| * the name in the case of wildcards, or all the IP addresses. | |
| * | |
| * @param permission the Permission object to add. | |
| * | |
| * @throws IllegalArgumentException if the permission is not a | |
| * SocketPermission | |
| * | |
| * @throws SecurityException if this SocketPermissionCollection object | |
| * has been marked readonly | |
| */ | |
| @Override | |
| public void add(Permission permission) { | |
| if (! (permission instanceof SocketPermission sp)) | |
| throw new IllegalArgumentException("invalid permission: "+ | |
| permission); | |
| if (isReadOnly()) | |
| throw new SecurityException( | |
| "attempt to add a Permission to a readonly PermissionCollection"); | |
| // Add permission to map if it is absent, or replace with new | |
| // permission if applicable. | |
| perms.merge(sp.getName(), sp, (existingVal, newVal) -> { | |
| int oldMask = existingVal.getMask(); | |
| int newMask = newVal.getMask(); | |
| if (oldMask != newMask) { | |
| int effective = oldMask | newMask; | |
| if (effective == newMask) { | |
| return newVal; | |
| } | |
| if (effective != oldMask) { | |
| return new SocketPermission(sp.getName(), effective); | |
| } | |
| } | |
| return existingVal; | |
| } | |
| ); | |
| } | |
| /** | |
| * Check and see if this collection of permissions implies the permissions | |
| * expressed in "permission". | |
| * | |
| * @param permission the Permission object to compare | |
| * | |
| * @return true if "permission" is a proper subset of a permission in | |
| * the collection, false if not. | |
| */ | |
| @Override | |
| public boolean implies(Permission permission) | |
| { | |
| if (! (permission instanceof SocketPermission np)) | |
| return false; | |
| int desired = np.getMask(); | |
| int effective = 0; | |
| int needed = desired; | |
| var hit = perms.get(np.getName()); | |
| if (hit != null) { | |
| // fastpath, if the host was explicitly listed | |
| if (((needed & hit.getMask()) != 0) && hit.impliesIgnoreMask(np)) { | |
| effective |= hit.getMask(); | |
| if ((effective & desired) == desired) { | |
| return true; | |
| } | |
| needed = (desired & ~effective); | |
| } | |
| } | |
| //System.out.println("implies "+np); | |
| for (SocketPermission x : perms.values()) { | |
| //System.out.println(" trying "+x); | |
| if (((needed & x.getMask()) != 0) && x.impliesIgnoreMask(np)) { | |
| effective |= x.getMask(); | |
| if ((effective & desired) == desired) { | |
| return true; | |
| } | |
| needed = (desired & ~effective); | |
| } | |
| } | |
| return false; | |
| } | |
| /** | |
| * Returns an enumeration of all the SocketPermission objects in the | |
| * container. | |
| * | |
| * @return an enumeration of all the SocketPermission objects. | |
| */ | |
| @Override | |
| @SuppressWarnings("unchecked") | |
| public Enumeration<Permission> elements() { | |
| return (Enumeration)Collections.enumeration(perms.values()); | |
| } | |
| @java.io.Serial | |
| private static final long serialVersionUID = 2787186408602843674L; | |
| // Need to maintain serialization interoperability with earlier releases, | |
| // which had the serializable field: | |
| // | |
| // The SocketPermissions for this set. | |
| // @serial | |
| // | |
| // private Vector permissions; | |
| /** | |
| * @serialField permissions java.util.Vector | |
| * A list of the SocketPermissions for this set. | |
| */ | |
| @java.io.Serial | |
| private static final ObjectStreamField[] serialPersistentFields = { | |
| new ObjectStreamField("permissions", Vector.class), | |
| }; | |
| /** | |
| * Writes the state of this object to the stream. | |
| * @serialData "permissions" field (a Vector containing the SocketPermissions). | |
| * | |
| * @param out the {@code ObjectOutputStream} to which data is written | |
| * @throws IOException if an I/O error occurs | |
| */ | |
| /* | |
| * Writes the contents of the perms field out as a Vector for | |
| * serialization compatibility with earlier releases. | |
| */ | |
| @java.io.Serial | |
| private void writeObject(ObjectOutputStream out) throws IOException { | |
| // Don't call out.defaultWriteObject() | |
| // Write out Vector | |
| Vector<SocketPermission> permissions = new Vector<>(perms.values()); | |
| ObjectOutputStream.PutField pfields = out.putFields(); | |
| pfields.put("permissions", permissions); | |
| out.writeFields(); | |
| } | |
| /** | |
| * Reads in a {@code Vector} of {@code SocketPermission} and saves | |
| * them in the perms field. | |
| * | |
| * @param in the {@code ObjectInputStream} from which data is read | |
| * @throws IOException if an I/O error occurs | |
| * @throws ClassNotFoundException if a serialized class cannot be loaded | |
| */ | |
| @java.io.Serial | |
| private void readObject(ObjectInputStream in) | |
| throws IOException, ClassNotFoundException | |
| { | |
| // Don't call in.defaultReadObject() | |
| // Read in serialized fields | |
| ObjectInputStream.GetField gfields = in.readFields(); | |
| // Get the one we want | |
| @SuppressWarnings("unchecked") | |
| Vector<SocketPermission> permissions = (Vector<SocketPermission>)gfields.get("permissions", null); | |
| perms = new ConcurrentHashMap<>(permissions.size()); | |
| for (SocketPermission sp : permissions) { | |
| perms.put(sp.getName(), sp); | |
| } | |
| } | |
| } |