package com.lody.virtual.server.pm;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Build;
import com.lody.virtual.helper.utils.VLog;
import com.lody.virtual.server.pm.parser.VPackage;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
public abstract class IntentResolver<F extends VPackage.IntentInfo, R extends Object> {
private static final String TAG = "IntentResolver";
// Sorts a List of IntentFilter objects into descending priority order.
@SuppressWarnings("rawtypes")
private static final Comparator sResolvePrioritySorter = new Comparator() {
public int compare(Object o1, Object o2) {
int q1;
int q2;
if (o1 instanceof IntentFilter) {
q1 = ((IntentFilter) o1).getPriority();
q2 = ((IntentFilter) o2).getPriority();
} else if (o1 instanceof ResolveInfo) {
ResolveInfo r1 = (ResolveInfo) o1;
ResolveInfo r2 = (ResolveInfo) o2;
q1 = r1.filter == null ? 0 : r1.filter.getPriority();
q2 = r2.filter == null ? 0 : r2.filter.getPriority();
} else {
return 0;
}
return (q1 > q2) ? -1 : ((q1 < q2) ? 1 : 0);
}
};
/**
* All filters that have been registered.
*/
private HashSet<F> mFilters = new HashSet<F>();
/**
* All of the MIME types that have been registered, such as "image/jpeg",
* "image/*", or "{@literal *}/*".
*/
private HashMap<String, F[]> mTypeToFilter = new HashMap<String, F[]>();
/**
* The base names of all of all fully qualified MIME types that have been
* registered, such as "image" or "*". Wild card MIME types such as
* "image/*" will not be here.
*/
private HashMap<String, F[]> mBaseTypeToFilter = new HashMap<String, F[]>();
/**
* The base names of all of the MIME types with a sub-type wildcard that
* have been registered. For example, a filter with "image/*" will be
* included here as "image" but one with "image/jpeg" will not be included
* here. This also includes the "*" for the "{@literal *}/*" MIME type.
*/
private HashMap<String, F[]> mWildTypeToFilter = new HashMap<String, F[]>();
/**
* All of the URI schemes (such as http) that have been registered.
*/
private HashMap<String, F[]> mSchemeToFilter = new HashMap<String, F[]>();
/**
* All of the actions that have been registered, but only those that did not
* specify data.
*/
private HashMap<String, F[]> mActionToFilter = new HashMap<String, F[]>();
/**
* All of the actions that have been registered and specified a MIME type.
*/
private HashMap<String, F[]> mTypedActionToFilter = new HashMap<String, F[]>();
private static FastImmutableArraySet<String> getFastIntentCategories(Intent intent) {
final Set<String> categories = intent.getCategories();
if (categories == null) {
return null;
}
return new FastImmutableArraySet<String>(categories.toArray(new String[categories.size()]));
}
public void addFilter(F f) {
mFilters.add(f);
int numS = register_intent_filter(f, f.filter.schemesIterator(), mSchemeToFilter, " Scheme: ");
int numT = register_mime_types(f, " Type: ");
if (numS == 0 && numT == 0) {
register_intent_filter(f, f.filter.actionsIterator(), mActionToFilter, " Action: ");
}
if (numT != 0) {
register_intent_filter(f, f.filter.actionsIterator(), mTypedActionToFilter, " TypedAction: ");
}
}
private boolean filterEquals(IntentFilter f1, IntentFilter f2) {
int s1 = f1.countActions();
int s2 = f2.countActions();
if (s1 != s2) {
return false;
}
for (int i = 0; i < s1; i++) {
if (!f2.hasAction(f1.getAction(i))) {
return false;
}
}
s1 = f1.countCategories();
s2 = f2.countCategories();
if (s1 != s2) {
return false;
}
for (int i = 0; i < s1; i++) {
if (!f2.hasCategory(f1.getCategory(i))) {
return false;
}
}
s1 = f1.countDataTypes();
s2 = f2.countDataTypes();
if (s1 != s2) {
return false;
}
s1 = f1.countDataSchemes();
s2 = f2.countDataSchemes();
if (s1 != s2) {
return false;
}
for (int i = 0; i < s1; i++) {
if (!f2.hasDataScheme(f1.getDataScheme(i))) {
return false;
}
}
s1 = f1.countDataAuthorities();
s2 = f2.countDataAuthorities();
if (s1 != s2) {
return false;
}
s1 = f1.countDataPaths();
s2 = f2.countDataPaths();
if (s1 != s2) {
return false;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
s1 = f1.countDataSchemeSpecificParts();
s2 = f2.countDataSchemeSpecificParts();
if (s1 != s2) {
return false;
}
}
return true;
}
private ArrayList<F> collectFilters(F[] array, IntentFilter matching) {
ArrayList<F> res = null;
if (array != null) {
for (int i = 0; i < array.length; i++) {
F cur = array[i];
if (cur == null) {
break;
}
if (filterEquals(cur.filter, matching)) {
if (res == null) {
res = new ArrayList<>();
}
res.add(cur);
}
}
}
return res;
}
public ArrayList<F> findFilters(IntentFilter matching) {
if (matching.countDataSchemes() == 1) {
// Fast case.
return collectFilters(mSchemeToFilter.get(matching.getDataScheme(0)), matching);
} else if (matching.countDataTypes() != 0 && matching.countActions() == 1) {
// Another fast case.
return collectFilters(mTypedActionToFilter.get(matching.getAction(0)), matching);
} else if (matching.countDataTypes() == 0 && matching.countDataSchemes() == 0 && matching.countActions() == 1) {
// Last fast case.
return collectFilters(mActionToFilter.get(matching.getAction(0)), matching);
} else {
ArrayList<F> res = null;
for (F cur : mFilters) {
if (filterEquals(cur.filter, matching)) {
if (res == null) {
res = new ArrayList<>();
}
res.add(cur);
}
}
return res;
}
}
public void removeFilter(F f) {
removeFilterInternal(f);
mFilters.remove(f);
}
void removeFilterInternal(F f) {
int numS = unregister_intent_filter(f, f.filter.schemesIterator(), mSchemeToFilter, " Scheme: ");
int numT = unregister_mime_types(f, " Type: ");
if (numS == 0 && numT == 0) {
unregister_intent_filter(f, f.filter.actionsIterator(), mActionToFilter, " Action: ");
}
if (numT != 0) {
unregister_intent_filter(f, f.filter.actionsIterator(), mTypedActionToFilter, " TypedAction: ");
}
}
/**
* Returns an iterator allowing filters to be removed.
*/
public Iterator<F> filterIterator() {
return new IteratorWrapper(mFilters.iterator());
}
/**
* Returns a read-only set of the filters.
*/
public Set<F> filterSet() {
return Collections.unmodifiableSet(mFilters);
}
public List<R> queryIntentFromList(Intent intent, String resolvedType, boolean defaultOnly,
ArrayList<F[]> listCut, int userId) {
ArrayList<R> resultList = new ArrayList<R>();
FastImmutableArraySet<String> categories = getFastIntentCategories(intent);
final String scheme = intent.getScheme();
int N = listCut.size();
for (int i = 0; i < N; ++i) {
buildResolveList(intent, categories, defaultOnly, resolvedType, scheme, listCut.get(i), resultList, userId);
}
sortResults(resultList);
return resultList;
}
public List<R> queryIntent(Intent intent, String resolvedType, boolean defaultOnly, int userId) {
String scheme = intent.getScheme();
ArrayList<R> finalList = new ArrayList<R>();
F[] firstTypeCut = null;
F[] secondTypeCut = null;
F[] thirdTypeCut = null;
F[] schemeCut = null;
// If the intent includes a MIME type, then we want to collect all of
// the filters that match that MIME type.
if (resolvedType != null) {
int slashpos = resolvedType.indexOf('/');
if (slashpos > 0) {
final String baseType = resolvedType.substring(0, slashpos);
if (!baseType.equals("*")) {
if (resolvedType.length() != slashpos + 2 || resolvedType.charAt(slashpos + 1) != '*') {
// Not a wild card, so we can just look for all filters
// that
// completely match or wildcards whose base type
// matches.
firstTypeCut = mTypeToFilter.get(resolvedType);
secondTypeCut = mWildTypeToFilter.get(baseType);
} else {
// We can match anything with our base type.
firstTypeCut = mBaseTypeToFilter.get(baseType);
secondTypeCut = mWildTypeToFilter.get(baseType);
}
// Any */* types always apply, but we only need to do this
// if the intent type was not already */*.
thirdTypeCut = mWildTypeToFilter.get("*");
} else if (intent.getAction() != null) {
// The intent specified any type ({@literal *}/*). This
// can be a whole heck of a lot of things, so as a first
// cut let's use the action instead.
firstTypeCut = mTypedActionToFilter.get(intent.getAction());
}
}
}
// If the intent includes a data URI, then we want to collect all of
// the filters that match its scheme (we will further refine matches
// on the authority and path by directly matching each resulting
// filter).
if (scheme != null) {
schemeCut = mSchemeToFilter.get(scheme);
}
// If the intent does not specify any data -- either a MIME type or
// a URI -- then we will only be looking for matches against empty
// data.
if (resolvedType == null && scheme == null && intent.getAction() != null) {
firstTypeCut = mActionToFilter.get(intent.getAction());
}
FastImmutableArraySet<String> categories = getFastIntentCategories(intent);
if (firstTypeCut != null) {
buildResolveList(intent, categories, defaultOnly, resolvedType, scheme, firstTypeCut, finalList, userId);
}
if (secondTypeCut != null) {
buildResolveList(intent, categories, defaultOnly, resolvedType, scheme, secondTypeCut, finalList, userId);
}
if (thirdTypeCut != null) {
buildResolveList(intent, categories, defaultOnly, resolvedType, scheme, thirdTypeCut, finalList, userId);
}
if (schemeCut != null) {
buildResolveList(intent, categories, defaultOnly, resolvedType, scheme, schemeCut, finalList, userId);
}
sortResults(finalList);
return finalList;
}
/**
* Control whether the given filter is allowed to go into the result list.
* Mainly intended to prevent adding multiple filters for the same target
* object.
*/
protected boolean allowFilterResult(F filter, List<R> dest) {
return true;
}
/**
* Returns whether the object associated with the given filter is "stopped",
* that is whether it should not be included in the result if the intent
* requests to excluded stopped objects.
*/
protected boolean isFilterStopped(F filter) {
return false;
}
/**
* Returns whether this filter is owned by this package. This must be
* implemented to provide correct filtering of Intents that have specified a
* package name they are to be delivered to.
*/
protected abstract boolean isPackageForFilter(String packageName, F filter);
protected abstract F[] newArray(int size);
@SuppressWarnings("unchecked")
protected R newResult(F filter, int match, int userId) {
return (R) filter;
}
@SuppressWarnings("unchecked")
protected void sortResults(List<R> results) {
Collections.sort(results, sResolvePrioritySorter);
}
protected void dumpFilter(PrintWriter out, String prefix, F filter) {
out.print(prefix);
out.println(filter);
}
protected Object filterToLabel(F filter) {
return "IntentFilter";
}
protected void dumpFilterLabel(PrintWriter out, String prefix, Object label, int count) {
out.print(prefix);
out.print(label);
out.print(": ");
out.println(count);
}
private void addFilter(HashMap<String, F[]> map, String name, F filter) {
F[] array = map.get(name);
if (array == null) {
array = newArray(2);
map.put(name, array);
array[0] = filter;
} else {
final int N = array.length;
int i = N;
while (i > 0 && array[i - 1] == null) {
i--;
}
if (i < N) {
array[i] = filter;
} else {
F[] newa = newArray((N * 3) / 2);
System.arraycopy(array, 0, newa, 0, N);
newa[N] = filter;
map.put(name, newa);
}
}
}
private int register_mime_types(F filter, String prefix) {
final Iterator<String> i = filter.filter.typesIterator();
if (i == null) {
return 0;
}
int num = 0;
while (i.hasNext()) {
String name = i.next();
num++;
String baseName = name;
final int slashpos = name.indexOf('/');
if (slashpos > 0) {
baseName = name.substring(0, slashpos).intern();
} else {
name = name + "/*";
}
addFilter(mTypeToFilter, name, filter);
if (slashpos > 0) {
addFilter(mBaseTypeToFilter, baseName, filter);
} else {
addFilter(mWildTypeToFilter, baseName, filter);
}
}
return num;
}
private int unregister_mime_types(F filter, String prefix) {
final Iterator<String> i = filter.filter.typesIterator();
if (i == null) {
return 0;
}
int num = 0;
while (i.hasNext()) {
String name = i.next();
num++;
String baseName = name;
final int slashpos = name.indexOf('/');
if (slashpos > 0) {
baseName = name.substring(0, slashpos).intern();
} else {
name = name + "/*";
}
remove_all_objects(mTypeToFilter, name, filter);
if (slashpos > 0) {
remove_all_objects(mBaseTypeToFilter, baseName, filter);
} else {
remove_all_objects(mWildTypeToFilter, baseName, filter);
}
}
return num;
}
private int register_intent_filter(F filter, Iterator<String> i, HashMap<String, F[]> dest, String prefix) {
if (i == null) {
return 0;
}
int num = 0;
while (i.hasNext()) {
String name = i.next();
num++;
addFilter(dest, name, filter);
}
return num;
}
private int unregister_intent_filter(F filter, Iterator<String> i, HashMap<String, F[]> dest, String prefix) {
if (i == null) {
return 0;
}
int num = 0;
while (i.hasNext()) {
String name = i.next();
num++;
remove_all_objects(dest, name, filter);
}
return num;
}
private void remove_all_objects(HashMap<String, F[]> map, String name, Object object) {
F[] array = map.get(name);
if (array != null) {
int LAST = array.length - 1;
while (LAST >= 0 && array[LAST] == null) {
LAST--;
}
for (int idx = LAST; idx >= 0; idx--) {
if (array[idx] == object) {
final int remain = LAST - idx;
if (remain > 0) {
System.arraycopy(array, idx + 1, array, idx, remain);
}
array[LAST] = null;
LAST--;
}
}
if (LAST < 0) {
map.remove(name);
} else if (LAST < (array.length / 2)) {
F[] newa = newArray(LAST + 2);
System.arraycopy(array, 0, newa, 0, LAST + 1);
map.put(name, newa);
}
}
}
private void buildResolveList(Intent intent, FastImmutableArraySet<String> categories,
boolean defaultOnly, String resolvedType, String scheme, F[] src, List<R> dest, int userId) {
final String action = intent.getAction();
final Uri data = intent.getData();
final String packageName = intent.getPackage();
final int N = src != null ? src.length : 0;
boolean hasNonDefaults = false;
int i;
F filter;
for (i = 0; i < N && (filter = src[i]) != null; i++) {
int match;
// Is delivery being limited to filters owned by a particular
// package?
if (packageName != null && !isPackageForFilter(packageName, filter)) {
continue;
}
// Do we already have this one?
if (!allowFilterResult(filter, dest)) {
continue;
}
match = filter.filter.match(action, resolvedType, scheme, data, categories, TAG);
if (match >= 0) {
if (!defaultOnly || filter.filter.hasCategory(Intent.CATEGORY_DEFAULT)) {
final R oneResult = newResult(filter, match, userId);
if (oneResult != null) {
dest.add(oneResult);
}
} else {
hasNonDefaults = true;
}
}
}
if (hasNonDefaults) {
if (dest.size() == 0) {
VLog.w(TAG, "resolveIntent failed: found match, but none with CATEGORY_DEFAULT");
} else if (dest.size() > 1) {
VLog.w(TAG, "resolveIntent: multiple matches, only some with CATEGORY_DEFAULT");
}
}
}
private class IteratorWrapper implements Iterator<F> {
private Iterator<F> mI;
private F mCur;
IteratorWrapper(Iterator<F> it) {
mI = it;
}
public boolean hasNext() {
return mI.hasNext();
}
public F next() {
return (mCur = mI.next());
}
public void remove() {
if (mCur != null) {
removeFilterInternal(mCur);
}
mI.remove();
}
}
}