| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.nfc.cardemulation; |
| |
| import android.content.ComponentName; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.content.res.XmlResourceParser; |
| import android.graphics.drawable.Drawable; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.util.Xml; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| |
| /** |
| * @hide |
| */ |
| public final class ApduServiceInfo implements Parcelable { |
| static final String TAG = "ApduServiceInfo"; |
| |
| /** |
| * The service that implements this |
| */ |
| final ResolveInfo mService; |
| |
| /** |
| * Description of the service |
| */ |
| final String mDescription; |
| |
| /** |
| * Convenience AID list |
| */ |
| final ArrayList<String> mAids; |
| |
| /** |
| * Whether this service represents AIDs running on the host CPU |
| */ |
| final boolean mOnHost; |
| |
| /** |
| * All AID groups this service handles |
| */ |
| final ArrayList<AidGroup> mAidGroups; |
| |
| /** |
| * Convenience hashmap |
| */ |
| final HashMap<String, AidGroup> mCategoryToGroup; |
| |
| /** |
| * @hide |
| */ |
| public ApduServiceInfo(ResolveInfo info, boolean onHost, String description, |
| ArrayList<AidGroup> aidGroups) { |
| this.mService = info; |
| this.mDescription = description; |
| this.mAidGroups = aidGroups; |
| this.mAids = new ArrayList<String>(); |
| this.mCategoryToGroup = new HashMap<String, AidGroup>(); |
| this.mOnHost = onHost; |
| for (AidGroup aidGroup : aidGroups) { |
| this.mCategoryToGroup.put(aidGroup.category, aidGroup); |
| this.mAids.addAll(aidGroup.aids); |
| } |
| } |
| |
| public ApduServiceInfo(PackageManager pm, ResolveInfo info, boolean onHost) |
| throws XmlPullParserException, IOException { |
| ServiceInfo si = info.serviceInfo; |
| XmlResourceParser parser = null; |
| try { |
| if (onHost) { |
| parser = si.loadXmlMetaData(pm, HostApduService.SERVICE_META_DATA); |
| if (parser == null) { |
| throw new XmlPullParserException("No " + HostApduService.SERVICE_META_DATA + |
| " meta-data"); |
| } |
| } else { |
| parser = si.loadXmlMetaData(pm, OffHostApduService.SERVICE_META_DATA); |
| if (parser == null) { |
| throw new XmlPullParserException("No " + OffHostApduService.SERVICE_META_DATA + |
| " meta-data"); |
| } |
| } |
| |
| int eventType = parser.getEventType(); |
| while (eventType != XmlPullParser.START_TAG && eventType != XmlPullParser.END_DOCUMENT) { |
| eventType = parser.next(); |
| } |
| |
| String tagName = parser.getName(); |
| if (onHost && !"host-apdu-service".equals(tagName)) { |
| throw new XmlPullParserException( |
| "Meta-data does not start with <host-apdu-service> tag"); |
| } else if (!onHost && !"offhost-apdu-service".equals(tagName)) { |
| throw new XmlPullParserException( |
| "Meta-data does not start with <offhost-apdu-service> tag"); |
| } |
| |
| Resources res = pm.getResourcesForApplication(si.applicationInfo); |
| AttributeSet attrs = Xml.asAttributeSet(parser); |
| if (onHost) { |
| TypedArray sa = res.obtainAttributes(attrs, |
| com.android.internal.R.styleable.HostApduService); |
| mService = info; |
| mDescription = sa.getString( |
| com.android.internal.R.styleable.HostApduService_description); |
| } else { |
| TypedArray sa = res.obtainAttributes(attrs, |
| com.android.internal.R.styleable.OffHostApduService); |
| mService = info; |
| mDescription = sa.getString( |
| com.android.internal.R.styleable.OffHostApduService_description); |
| } |
| |
| mAidGroups = new ArrayList<AidGroup>(); |
| mCategoryToGroup = new HashMap<String, AidGroup>(); |
| mAids = new ArrayList<String>(); |
| mOnHost = onHost; |
| final int depth = parser.getDepth(); |
| AidGroup currentGroup = null; |
| |
| // Parsed values for the current AID group |
| while (((eventType = parser.next()) != XmlPullParser.END_TAG || parser.getDepth() > depth) |
| && eventType != XmlPullParser.END_DOCUMENT) { |
| tagName = parser.getName(); |
| if (eventType == XmlPullParser.START_TAG && "aid-group".equals(tagName) && |
| currentGroup == null) { |
| final TypedArray groupAttrs = res.obtainAttributes(attrs, |
| com.android.internal.R.styleable.AidGroup); |
| // Get category of AID group |
| String groupDescription = groupAttrs.getString( |
| com.android.internal.R.styleable.AidGroup_description); |
| String groupCategory = groupAttrs.getString( |
| com.android.internal.R.styleable.AidGroup_category); |
| if (!CardEmulationManager.CATEGORY_PAYMENT.equals(groupCategory)) { |
| groupCategory = CardEmulationManager.CATEGORY_OTHER; |
| } |
| currentGroup = mCategoryToGroup.get(groupCategory); |
| if (currentGroup != null) { |
| if (!CardEmulationManager.CATEGORY_OTHER.equals(groupCategory)) { |
| Log.e(TAG, "Not allowing multiple aid-groups in the " + |
| groupCategory + " category"); |
| currentGroup = null; |
| } |
| } else { |
| currentGroup = new AidGroup(groupCategory, groupDescription); |
| } |
| } else if (eventType == XmlPullParser.END_TAG && "aid-group".equals(tagName) && |
| currentGroup != null) { |
| if (currentGroup.aids.size() > 0) { |
| if (!mCategoryToGroup.containsKey(currentGroup.category)) { |
| mAidGroups.add(currentGroup); |
| mCategoryToGroup.put(currentGroup.category, currentGroup); |
| } |
| } else { |
| Log.e(TAG, "Not adding <aid-group> with empty or invalid AIDs"); |
| } |
| currentGroup = null; |
| } else if (eventType == XmlPullParser.START_TAG && "aid-filter".equals(tagName) && |
| currentGroup != null) { |
| final TypedArray a = res.obtainAttributes(attrs, |
| com.android.internal.R.styleable.AidFilter); |
| String aid = a.getString(com.android.internal.R.styleable.AidFilter_name); |
| if (isValidAid(aid) && !currentGroup.aids.contains(aid)) { |
| currentGroup.aids.add(aid); |
| mAids.add(aid); |
| } else { |
| Log.e(TAG, "Ignoring invalid or duplicate aid: " + aid); |
| } |
| } |
| } |
| } catch (NameNotFoundException e) { |
| throw new XmlPullParserException("Unable to create context for: " + si.packageName); |
| } finally { |
| if (parser != null) parser.close(); |
| } |
| } |
| |
| public ComponentName getComponent() { |
| return new ComponentName(mService.serviceInfo.packageName, |
| mService.serviceInfo.name); |
| } |
| |
| public ArrayList<String> getAids() { |
| return mAids; |
| } |
| |
| public ArrayList<AidGroup> getAidGroups() { |
| return mAidGroups; |
| } |
| |
| public boolean hasCategory(String category) { |
| return mCategoryToGroup.containsKey(category); |
| } |
| |
| public boolean isOnHost() { |
| return mOnHost; |
| } |
| |
| public CharSequence loadLabel(PackageManager pm) { |
| return mService.loadLabel(pm); |
| } |
| |
| public Drawable loadIcon(PackageManager pm) { |
| return mService.loadIcon(pm); |
| } |
| |
| static boolean isValidAid(String aid) { |
| if (aid == null) |
| return false; |
| |
| int aidLength = aid.length(); |
| if (aidLength == 0 || (aidLength % 2) != 0) { |
| Log.e(TAG, "AID " + aid + " is not correctly formatted."); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder out = new StringBuilder("ApduService: "); |
| out.append(getComponent()); |
| out.append(", description: " + mDescription); |
| out.append(", AID Groups: "); |
| for (AidGroup aidGroup : mAidGroups) { |
| out.append(aidGroup.toString()); |
| } |
| return out.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof ApduServiceInfo)) return false; |
| ApduServiceInfo thatService = (ApduServiceInfo) o; |
| |
| return thatService.getComponent().equals(this.getComponent()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return getComponent().hashCode(); |
| } |
| |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| mService.writeToParcel(dest, flags); |
| dest.writeString(mDescription); |
| dest.writeInt(mOnHost ? 1 : 0); |
| dest.writeInt(mAidGroups.size()); |
| if (mAidGroups.size() > 0) { |
| dest.writeTypedList(mAidGroups); |
| } |
| }; |
| |
| public static final Parcelable.Creator<ApduServiceInfo> CREATOR = |
| new Parcelable.Creator<ApduServiceInfo>() { |
| @Override |
| public ApduServiceInfo createFromParcel(Parcel source) { |
| ResolveInfo info = ResolveInfo.CREATOR.createFromParcel(source); |
| String description = source.readString(); |
| boolean onHost = (source.readInt() != 0) ? true : false; |
| ArrayList<AidGroup> aidGroups = new ArrayList<AidGroup>(); |
| int numGroups = source.readInt(); |
| if (numGroups > 0) { |
| source.readTypedList(aidGroups, AidGroup.CREATOR); |
| } |
| return new ApduServiceInfo(info, onHost, description, aidGroups); |
| } |
| |
| @Override |
| public ApduServiceInfo[] newArray(int size) { |
| return new ApduServiceInfo[size]; |
| } |
| }; |
| |
| public static class AidGroup implements Parcelable { |
| final ArrayList<String> aids; |
| final String category; |
| final String description; |
| |
| AidGroup(ArrayList<String> aids, String category, String description) { |
| this.aids = aids; |
| this.category = category; |
| this.description = description; |
| } |
| |
| AidGroup(String category, String description) { |
| this.aids = new ArrayList<String>(); |
| this.category = category; |
| this.description = description; |
| } |
| |
| public String getCategory() { |
| return category; |
| } |
| |
| public ArrayList<String> getAids() { |
| return aids; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder out = new StringBuilder("Category: " + category + |
| ", description: " + description + ", AIDs:"); |
| for (String aid : aids) { |
| out.append(aid); |
| out.append(", "); |
| } |
| return out.toString(); |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeString(category); |
| dest.writeString(description); |
| dest.writeInt(aids.size()); |
| if (aids.size() > 0) { |
| dest.writeStringList(aids); |
| } |
| } |
| |
| public static final Parcelable.Creator<ApduServiceInfo.AidGroup> CREATOR = |
| new Parcelable.Creator<ApduServiceInfo.AidGroup>() { |
| |
| @Override |
| public AidGroup createFromParcel(Parcel source) { |
| String category = source.readString(); |
| String description = source.readString(); |
| int listSize = source.readInt(); |
| ArrayList<String> aidList = new ArrayList<String>(); |
| if (listSize > 0) { |
| source.readStringList(aidList); |
| } |
| return new AidGroup(aidList, category, description); |
| } |
| |
| @Override |
| public AidGroup[] newArray(int size) { |
| return new AidGroup[size]; |
| } |
| }; |
| } |
| } |