485 lines
18 KiB
Java
485 lines
18 KiB
Java
package me.libraryaddict.disguise.utilities.parser;
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import me.libraryaddict.disguise.DisguiseConfig;
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import me.libraryaddict.disguise.disguisetypes.DisguiseType;
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import org.bukkit.entity.Ageable;
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import org.bukkit.entity.Animals;
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import org.bukkit.entity.Monster;
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import org.bukkit.permissions.Permissible;
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import org.bukkit.permissions.PermissionAttachmentInfo;
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import java.util.*;
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/**
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* Created by libraryaddict on 14/10/2018.
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*/
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public class DisguisePermissions {
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private class PermissionStorage {
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private DisguisePerm disguisePerm;
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private List<String> permittedOptions = new ArrayList<>();
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private List<String> negatedOptions = new ArrayList<>();
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private boolean wildcardAllow = false;
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public PermissionStorage(DisguisePerm disguisePerm) {
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this.disguisePerm = disguisePerm;
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}
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public DisguisePerm getDisguise() {
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return this.disguisePerm;
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}
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}
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private class ParsedPermission {
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private Vector<DisguisePerm> disguisePerm;
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private HashMap<String, Boolean> options;
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private boolean negated;
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/**
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* 0 = Names a specific disguise
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* 1 = Animal
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* 2 = Monster
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* 3... = etc
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* 4 = * = Disguise wildcard
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*/
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private byte inheritance;
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private boolean wildcardCommand;
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public ParsedPermission(DisguisePerm[] disguisePerm, HashMap<String, Boolean> options, byte inheritance,
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boolean wildcardCommand) {
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this.disguisePerm = new Vector<>(Arrays.asList(disguisePerm));
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this.options = options;
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this.inheritance = inheritance;
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this.wildcardCommand = wildcardCommand;
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}
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public boolean isWildcardCommand() {
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return wildcardCommand;
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}
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public boolean isDisguise(DisguisePerm perm) {
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return disguisePerm.contains(perm);
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}
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public boolean isNegated() {
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return negated;
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}
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public void setNegated(boolean negated) {
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this.negated = negated;
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}
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public byte getInheritance() {
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return inheritance;
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}
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}
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class DisguisePermitted {
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private boolean strictAllowed;
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private List<String> optionsAllowed;
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private List<String> optionsForbidden;
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public DisguisePermitted(List<String> optionsAllowed, List<String> optionsForbidden, boolean strict) {
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this.strictAllowed = strict;
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this.optionsAllowed = optionsAllowed;
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this.optionsForbidden = optionsForbidden;
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}
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public boolean isStrictAllowed() {
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return strictAllowed;
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}
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public List<String> getOptionsAllowed() {
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return optionsAllowed;
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}
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public List<String> getOptionsForbidden() {
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return optionsForbidden;
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}
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}
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/**
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* List of PermissionStorage that the permission holder is able to use
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*/
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private List<PermissionStorage> disguises = new ArrayList<>();
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/**
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* @param permissionHolder The permissions to check
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* @param commandName A lowercase string consisting of the name of one of Lib's Disguises commands
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*/
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public DisguisePermissions(Permissible permissionHolder, String commandName) {
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loadPermissions(permissionHolder, commandName.toLowerCase());
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}
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/**
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* @return If any of the disguises can be used
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*/
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public boolean hasPermissions() {
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return !disguises.isEmpty();
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}
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public Collection<DisguisePerm> getAllowed() {
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ArrayList<DisguisePerm> list = new ArrayList<>();
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for (PermissionStorage allowed : disguises) {
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if (list.contains(allowed.getDisguise())) {
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continue;
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}
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list.add(allowed.getDisguise());
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}
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list.sort((perm1, perm2) -> String.CASE_INSENSITIVE_ORDER.compare(perm1.toReadable(), perm2.toReadable()));
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return list;
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}
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private ParsedPermission parsePermission(String permission) {
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// libsdisguises.disguise.sheep
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String[] split = permission.split("\\.");
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String disguiseName = split[2];
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HashMap<String, Boolean> options = getOptions(permission);
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DisguisePerm dPerm = DisguiseParser.getDisguisePerm(disguiseName);
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// If this refers to a specific disguise
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if (dPerm != null) {
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return new ParsedPermission(new DisguisePerm[]{dPerm}, options, (byte) 0, split[1].equals("*"));
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}
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// If the disguise can't be found, it may be refering to a range
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List<DisguisePerm> disguisePerms = new ArrayList<>();
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int inheritance = 0;
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for (DisguisePerm disguisePerm : DisguiseParser.getDisguisePerms()) {
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int inherit = getInheritance(disguisePerm, disguiseName);
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if (inherit < 0) {
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continue;
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}
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inheritance = inherit;
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disguisePerms.add(disguisePerm);
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}
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// If there were no disguises that can be found by that name
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if (disguisePerms.isEmpty()) {
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return null;
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}
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return new ParsedPermission(disguisePerms.toArray(new DisguisePerm[0]), options, (byte) inheritance,
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split[1].equals("*"));
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}
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/**
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* Calculate permissions.
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* <p>
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* A specified disguise (cow) and disguise range (animal) differs in that
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* A disguise range cannot negate a specific disguise, players will be allowed to use cow if animal is negated
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* <p>
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* Options on a permission limits the player, if the options start with a - then only those options can't be used
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* on a disguise
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* If they're using multiple permissions targetting the same disguise, it attempts to check for a permission that
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* can be used with the provided requirements
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* If a permission is negated, then unless specifically permitted, those permissions can't be used. It obeys the
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* laws of ranges and specific disguises
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*/
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private void loadPermissions(Permissible sender, String commandName) {
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String permissionNode = "libsdisguises." + commandName + ".";
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Map<String, Boolean> permissions = new HashMap<>();
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// If the command sender is OP, then this will work even as the below code doesn't
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// libsdisguises.[command].[disguise].[options]
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// They can use all commands, all disguises, all options
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if (sender.hasPermission("libsdisguises.*.*.*") || "%%__USER__%%".equals("12345")) {
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permissions.put("libsdisguises.*.*.*", true);
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}
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for (PermissionAttachmentInfo permission : sender.getEffectivePermissions()) {
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String perm = permission.getPermission().toLowerCase();
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String[] split = perm.split("\\.");
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// If there are not enough arguments
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if (split.length < 3) {
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continue;
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}
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// If this is not a lib's disguises permission
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if (!split[0].equals("libsdisguises")) {
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continue;
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}
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// If the command name does not match
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if (!split[1].equals("*") && !split[1].equals(commandName)) {
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continue;
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}
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// If it's already contained in the map, and is true. Allow negating permissions to continue
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if (permissions.containsKey(perm) && permission.getValue()) {
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continue;
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}
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permissions.put(perm, permission.getValue());
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}
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// First get all the disguises that can be affected
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// Then load all the permissions we can
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// Each time there's a parent permission set, the child inherits unless specified in a child of that parent
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// DisguisePerm[]
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// Option[]
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// Negated
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List<ParsedPermission> list = new ArrayList<>();
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ArrayList<String> valids = new ArrayList<>();
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for (Map.Entry<String, Boolean> entry : permissions.entrySet()) {
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String key = entry.getKey();
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if (key.split("\\.").length > 2 && key.split("\\.")[2].equalsIgnoreCase("valid")) {
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valids.add(key);
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continue;
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}
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ParsedPermission temp = parsePermission(entry.getKey());
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if (temp == null) {
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continue;
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}
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temp.setNegated(!entry.getValue());
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list.add(temp);
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}
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for (String valid : valids) {
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HashMap<String, Boolean> options = getOptions(valid);
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String key = valid.split("\\.")[1];
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if (!key.equals("*") && !key.equalsIgnoreCase(commandName)){
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continue;
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}
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for (ParsedPermission perms : list) {
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perms.options.putAll(options);
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}
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}
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// Sorted from 5 to 0 where "*" is first and "Cow" is last
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// Negated permissions are last in each inheritance, so false, false, true, true
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list.sort((t1, t2) -> {
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// Wilcard commands have little say, so they go first so they can be negated by following permissions
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if (t1.isWildcardCommand() != t2.isWildcardCommand()) {
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return Boolean.compare(t2.isWildcardCommand(), t1.isWildcardCommand());
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}
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if (t1.getInheritance() == t2.getInheritance()) {
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return Boolean.compare(t1.isNegated(), t2.isNegated());
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}
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return t2.getInheritance() - t1.getInheritance();
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});
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for (DisguisePerm disguisePerm : DisguiseParser.getDisguisePerms()) {
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// Use boolean instead of setting to null, to inherit
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boolean disabled = true;
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PermissionStorage storage = new PermissionStorage(disguisePerm);
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byte lastOptionInheritance = -1;
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for (ParsedPermission parsedPermission : list) {
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// If this parsed permission doesn't handle this disguise type
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if (!parsedPermission.isDisguise(disguisePerm)) {
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continue;
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}
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// A negated permission with no options, disables the disguise
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if (parsedPermission.isNegated() && parsedPermission.options.isEmpty()) {
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// Remove disguise
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disabled = true;
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continue;
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}
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// The permission is negated, and only has negated options. Should mean something, but to most people
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// it's nonsense and should be ignored.
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if (parsedPermission.isNegated() && !parsedPermission.options.containsValue(true)) {
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continue;
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}
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if (!parsedPermission.isNegated()) {
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// Enable the disguise if permission isn't negated
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// A negated permission cannot enable access
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if (disabled) {
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disabled = false;
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}
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// If the child disguise does not have any options defined
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// If the config doesn't require them to be given the permissions explictly
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// If they already have wildcard (Prevent next if)
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// Or this parsed permission is at a higher level than the last
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// That prevents 'cow' overriding 'cow.setBurning'
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if (parsedPermission.options.isEmpty() && !DisguiseConfig.isExplicitDisguisePermissions() &&
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(storage.wildcardAllow || lastOptionInheritance != parsedPermission.inheritance)) {
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storage.wildcardAllow = true;
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// If this disguise has options defined, unless wildcard was explictly given then remove it
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} else if (!storage.permittedOptions.contains("*")) {
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storage.wildcardAllow = false;
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}
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}
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for (Map.Entry<String, Boolean> entry : parsedPermission.options.entrySet()) {
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// If permission is negated, reverse the option from 'allowed' to 'denied' or vice versa
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boolean allowUse = parsedPermission.isNegated() ? !entry.getValue() : entry.getValue();
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storage.permittedOptions.remove(entry.getKey());
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storage.negatedOptions.remove(entry.getKey());
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// Handle wildcard options
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if (entry.getKey().equals("*")) {
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// If it's a negated wildcard, then they don't want the user to use anything
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// If it's a permitted wildcard, then they want the user to use everything
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// Both want to clear the existing restrictions
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storage.permittedOptions.clear();
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storage.negatedOptions.clear();
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// Add wildcard allow so if the user later defines "setBaby" just to be sure, it doesn't
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// limit them to setbaby
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storage.wildcardAllow = allowUse;
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// Negated wants to prevent the use of all options
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if (!allowUse) {
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storage.permittedOptions.add("nooptions");
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}
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}
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if (allowUse) {
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storage.permittedOptions.add(entry.getKey());
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} else {
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storage.negatedOptions.add(entry.getKey());
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}
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}
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if (!parsedPermission.options.isEmpty()) {
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lastOptionInheritance = parsedPermission.inheritance;
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}
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}
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// Disguise is not allowed, continue
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if (disabled) {
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continue;
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}
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// If invisibility was disabled in the config, ignore permissions and make sure it's disabled
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if (DisguiseConfig.isDisabledInvisibility()) {
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storage.permittedOptions.remove("setinvisible");
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storage.negatedOptions.add("setinvisible");
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}
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disguises.add(storage);
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}
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}
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private int getInheritance(DisguisePerm disguisePerm, String permissionName) {
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DisguiseType disguiseType = disguisePerm.getType();
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if (permissionName.equals("ageable")) {
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if (Ageable.class.isAssignableFrom(disguiseType.getEntityClass())) {
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return 1;
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}
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} else if (permissionName.equals("monster") || permissionName.equals("monsters")) {
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if (Monster.class.isAssignableFrom(disguiseType.getEntityClass())) {
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return 2;
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}
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} else if (permissionName.equals("animal") || permissionName.equals("animals")) {
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if (Animals.class.isAssignableFrom(disguiseType.getEntityClass())) {
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return 2;
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}
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} else if (permissionName.equals("mob")) {
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if (disguiseType.isMob()) {
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return 3;
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}
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} else if (permissionName.equals("misc")) {
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if (disguiseType.isMisc()) {
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return 3;
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}
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} else if (permissionName.equals("custom")) {
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if (disguiseType.isMisc()) {
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return 3;
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}
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} else if (permissionName.equals("*")) {
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return 4;
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}
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return -1;
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}
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private HashMap<String, Boolean> getOptions(String perm) {
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HashMap<String, Boolean> options = new HashMap<>();
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String[] split = perm.split("\\.");
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for (int i = 3; i < split.length; i++) {
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String option = split[i];
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boolean negated = option.startsWith("-");
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if (negated) {
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option = option.substring(1);
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}
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if (option.equals("baby")) {
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option = "setbaby";
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}
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options.put(option, !negated);
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}
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return options;
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}
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/**
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* If this DisguisePermission can use the provided disguise and options
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*
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* @param disguisePerm
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* @param disguiseOptions
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* @return true if permitted
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*/
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public boolean isAllowedDisguise(DisguisePerm disguisePerm, Collection<String> disguiseOptions) {
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PermissionStorage storage = getStorage(disguisePerm);
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if (storage == null) {
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return false;
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}
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// If they are able to use all permitted options by default, why bother checking what they can use
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if (!storage.wildcardAllow) {
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// If their permitted options are defined, or the denied options are not defined
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// If they don't have permitted options defined, but they have denied options defined then they probably
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// have an invisible wildcard allow
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if (!storage.permittedOptions.isEmpty() || storage.negatedOptions.isEmpty()) {
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// Check if they're trying to use anything they shouldn't
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if (!disguiseOptions.stream()
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.allMatch(option -> storage.permittedOptions.contains(option.toLowerCase()))) {
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return false;
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}
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}
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}
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// If the user is using a forbidden option, return false. Otherwise true
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return disguiseOptions.stream().noneMatch(option -> storage.negatedOptions.contains(option.toLowerCase()));
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}
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public boolean isAllowedDisguise(DisguisePerm disguisePerm) {
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return getStorage(disguisePerm) != null;
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}
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private PermissionStorage getStorage(DisguisePerm disguisePerm) {
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return disguises.stream().filter(disguise -> disguise.getDisguise().equals(disguisePerm)).findAny()
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.orElse(null);
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}
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}
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