Merge "Move default MimeMap implementation to frameworks." (3f1d5d92) · Commits · e / os / android_frameworks_base

Android.bp

+1 −0

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		@@ -177,6 +177,7 @@ java_defaults {
		jarjar_rules: ":framework-jarjar-rules",

		static_libs: [
		"mimemap",
		"apex_aidl_interface-java",
		"suspend_control_aidl_interface-java",
		"framework-protos",

core/java/com/android/internal/os/RuntimeInit.java

+9 −0

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		@@ -20,6 +20,7 @@ import android.annotation.UnsupportedAppUsage;
		import android.app.ActivityManager;
		import android.app.ActivityThread;
		import android.app.ApplicationErrorReport;
		import android.content.type.MimeMapImpl;
		import android.os.Build;
		import android.os.DeadObjectException;
		import android.os.Debug;
		@@ -33,6 +34,9 @@ import com.android.internal.logging.AndroidConfig;
		import com.android.server.NetworkManagementSocketTagger;
		import dalvik.system.RuntimeHooks;
		import dalvik.system.VMRuntime;

		import libcore.net.MimeMap;

		import java.lang.reflect.InvocationTargetException;
		import java.lang.reflect.Method;
		import java.lang.reflect.Modifier;
		@@ -209,6 +213,11 @@ public class RuntimeInit {
		*/
		RuntimeHooks.setTimeZoneIdSupplier(() -> SystemProperties.get("persist.sys.timezone"));

		/*
		* Set a default mapping between MIME types and file extensions.
		*/
		MimeMap.setDefault(MimeMapImpl.createDefaultInstance());

		/*
		* Sets handler for java.util.logging to use Android log facilities.
		* The odd "new instance-and-then-throw-away" is a mirror of how

mime/Android.bp

0 → 100644

+43 −0

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		// Copyright (C) 2019 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.

		java_library {
		name: "mimemap",
		visibility: [
		"//cts/tests/tests/mimemap:__subpackages__",
		"//frameworks/base:__subpackages__",
		],

		srcs: [
		"java/android/content/type/MimeMapImpl.java",
		],

		java_resources: [
		":debian.mime.types",
		":android.mime.types",
		],

		sdk_version: "core_platform",
		}

		filegroup {
		name: "android.mime.types",
		visibility: [
		"//visibility:private",
		],
		path: "java-res/",
		srcs: [
		"java-res/android.mime.types",
		],
		}

mime/java-res/android.mime.types

0 → 100644

+146 −0

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		###############################################################################
		#
		# Android-specific MIME type <-> extension mappings
		#
		# Each line below defines an mapping from one MIME type to the first of the
		# listed extensions, and from listed extension back to the MIME type.
		# A mapping overrides any previous mapping _from_ that same MIME type or
		# extension (put() semantics), unless that MIME type / extension is prefixed with '?'
		# (putIfAbsent() semantics).
		#
		#
		###############################################################################
		#
		# EXAMPLES
		#
		# A line of the form:
		#
		# ?mime ext1 ?ext2 ext3
		#
		# affects the current mappings along the lines of the following pseudo code:
		#
		# mimeToExt.putIfAbsent("mime", "ext1");
		# extToMime.put("ext1", "mime");
		# extToMime.putIfAbsent("ext2", "mime");
		# extToMime.put("ext3", "mime");
		#
		# The line:
		#
		# ?text/plain txt
		#
		# leaves any earlier mapping for "text/plain" untouched, or maps that MIME type
		# to the file extension ".txt" if there is no earlier mapping. The line also
		# sets the mapping from file extension ".txt" to be the MIME type "text/plain",
		# regardless of whether a previous mapping existed.
		#
		###############################################################################


		# File extensions that Android wants to override to point to the given MIME type.
		#
		# After processing a line of the form:
		# ?<mimeType> <extension1> <extension2>
		# If <mimeType> was not already mapped to an extension then it will be
		# mapped to <extension1>.
		# <extension1> and <extension2> are mapped (or remapped) to <mimeType>.

		?application/epub+zip epub
		?application/pkix-cert cer
		?application/rss+xml rss
		?application/vnd.android.ota ota
		?application/vnd.apple.mpegurl m3u8
		?application/vnd.ms-pki.stl stl
		?application/vnd.ms-powerpoint pot
		?application/vnd.ms-wpl wpl
		?application/vnd.stardivision.impress sdp
		?application/vnd.stardivision.writer vor
		?application/vnd.youtube.yt yt
		?application/x-android-drm-fl fl
		?application/x-flac flac
		?application/x-font pcf
		?application/x-mpegurl m3u m3u8
		?application/x-pem-file pem
		?application/x-pkcs12 p12 pfx
		?application/x-webarchive webarchive
		?application/x-webarchive-xml webarchivexml
		?application/x-x509-server-cert crt
		?application/x-x509-user-cert crt

		?audio/3gpp 3gpp
		?audio/aac-adts aac
		?audio/imelody imy
		?audio/midi rtttl xmf
		?audio/mobile-xmf mxmf
		?audio/mp4 m4a
		?audio/mpegurl m3u
		?audio/sp-midi smf
		?audio/x-matroska mka
		?audio/x-pn-realaudio ra

		?image/bmp bmp
		?image/heic heic
		?image/heic-sequence heics
		?image/heif heif hif
		?image/heif-sequence heifs
		?image/ico cur
		?image/webp webp
		?image/x-adobe-dng dng
		?image/x-fuji-raf raf
		?image/x-icon ico
		?image/x-nikon-nrw nrw
		?image/x-panasonic-rw2 rw2
		?image/x-pentax-pef pef
		?image/x-samsung-srw srw
		?image/x-sony-arw arw

		?text/comma-separated-values csv
		?text/plain diff po
		?text/rtf rtf
		?text/text phps
		?text/xml xml
		?text/x-vcard vcf

		?video/3gpp2 3gpp2 3g2
		?video/3gpp 3gpp
		?video/avi avi
		?video/m4v m4v
		?video/mp2p mpeg
		?video/mp2t m2ts mts
		?video/mp2ts ts
		?video/vnd.youtube.yt yt
		?video/x-webex wrf

		# Optional additions that should not override any previous mapping.

		?application/x-wifi-config ?xml

		# Special cases where Android has a strong opinion about mappings, so we
		# define them very last and make them override in both directions (no "?").
		#
		# Lines here are of the form:
		# <mimeType> <extension1> <extension2> ...
		#
		# After processing each line,
		# <mimeType> is mapped to <extension1>
		# <extension1>, <extension2>, ... are all mapped to <mimeType>
		# This overrides any mappings for this <mimeType> / for these extensions
		# that may have been defined earlier.

		application/pgp-signature pgp
		application/x-x509-ca-cert crt
		audio/aac aac
		audio/basic snd
		audio/flac flac
		audio/midi rtx
		audio/mpeg mp3 m4a m4r
		audio/x-mpegurl m3u m3u8
		image/jpeg jpg
		image/x-ms-bmp bmp
		text/plain txt
		text/x-c++hdr hpp
		text/x-c++src cpp
		video/3gpp 3gpp
		video/mpeg mpeg
		video/quicktime mov
		video/x-matroska mkv

mime/java/android/content/type/MimeMapImpl.java

0 → 100644

+194 −0

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		/*
		* Copyright (C) 2019 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.content.type;

		import libcore.net.MimeMap;

		import java.io.BufferedReader;
		import java.io.IOException;
		import java.io.InputStreamReader;
		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.List;
		import java.util.Map;
		import java.util.regex.Pattern;

		/**
		* Default implementation of {@link MimeMap}, a bidirectional mapping between
		* MIME types and file extensions.
		*
		* This default mapping is loaded from data files that start with some mappings
		* recognized by IANA plus some custom extensions and overrides.
		*
		* @hide
		*/
		public class MimeMapImpl extends MimeMap {

		/**
		* Creates and returns a new {@link MimeMapImpl} instance that implements.
		* Android's default mapping between MIME types and extensions.
		*/
		public static MimeMapImpl createDefaultInstance() {
		return parseFromResources("/mime.types", "/android.mime.types");
		}

		private static final Pattern SPLIT_PATTERN = Pattern.compile("\\s+");

		/**
		* Note: These maps only contain lowercase keys/values, regarded as the
		* {@link #toLowerCase(String) canonical form}.
		*
		* <p>This is the case for both extensions and MIME types. The mime.types
		* data file contains examples of mixed-case MIME types, but some applications
		* use the lowercase version of these same types. RFC 2045 section 2 states
		* that MIME types are case insensitive.
		*/
		private final Map<String, String> mMimeTypeToExtension;
		private final Map<String, String> mExtensionToMimeType;

		public MimeMapImpl(Map<String, String> mimeTypeToExtension,
		Map<String, String> extensionToMimeType) {
		this.mMimeTypeToExtension = new HashMap<>(mimeTypeToExtension);
		for (Map.Entry<String, String> entry : mimeTypeToExtension.entrySet()) {
		checkValidMimeType(entry.getKey());
		checkValidExtension(entry.getValue());
		}
		this.mExtensionToMimeType = new HashMap<>(extensionToMimeType);
		for (Map.Entry<String, String> entry : extensionToMimeType.entrySet()) {
		checkValidExtension(entry.getKey());
		checkValidMimeType(entry.getValue());
		}
		}

		private static void checkValidMimeType(String s) {
		if (MimeMap.isNullOrEmpty(s) \|\| !s.equals(MimeMap.toLowerCase(s))) {
		throw new IllegalArgumentException("Invalid MIME type: " + s);
		}
		}

		private static void checkValidExtension(String s) {
		if (MimeMap.isNullOrEmpty(s) \|\| !s.equals(MimeMap.toLowerCase(s))) {
		throw new IllegalArgumentException("Invalid extension: " + s);
		}
		}

		static MimeMapImpl parseFromResources(String... resourceNames) {
		Map<String, String> mimeTypeToExtension = new HashMap<>();
		Map<String, String> extensionToMimeType = new HashMap<>();
		for (String resourceName : resourceNames) {
		parseTypes(mimeTypeToExtension, extensionToMimeType, resourceName);
		}
		return new MimeMapImpl(mimeTypeToExtension, extensionToMimeType);
		}

		/**
		* An element of a *mime.types file: A MIME type or an extension, with an optional
		* prefix of "?" (if not overriding an earlier value).
		*/
		private static class Element {
		public final boolean keepExisting;
		public final String s;

		Element(boolean keepExisting, String value) {
		this.keepExisting = keepExisting;
		this.s = toLowerCase(value);
		if (value.isEmpty()) {
		throw new IllegalArgumentException();
		}
		}

		public String toString() {
		return keepExisting ? ("?" + s) : s;
		}
		}

		private static String maybePut(Map<String, String> map, Element keyElement, String value) {
		if (keyElement.keepExisting) {
		return map.putIfAbsent(keyElement.s, value);
		} else {
		return map.put(keyElement.s, value);
		}
		}

		private static void parseTypes(Map<String, String> mimeTypeToExtension,
		Map<String, String> extensionToMimeType, String resource) {
		try (BufferedReader r = new BufferedReader(
		new InputStreamReader(MimeMapImpl.class.getResourceAsStream(resource)))) {
		String line;
		while ((line = r.readLine()) != null) {
		int commentPos = line.indexOf('#');
		if (commentPos >= 0) {
		line = line.substring(0, commentPos);
		}
		line = line.trim();
		// The first time a MIME type is encountered it is mapped to the first extension
		// listed in its line. The first time an extension is encountered it is mapped
		// to the MIME type.
		//
		// When encountering a previously seen MIME type or extension, then by default
		// the later ones override earlier mappings (put() semantics); however if a MIME
		// type or extension is prefixed with '?' then any earlier mapping _from_ that
		// MIME type / extension is kept (putIfAbsent() semantics).
		final String[] split = SPLIT_PATTERN.split(line);
		if (split.length <= 1) {
		// Need mimeType + at least one extension to make a mapping.
		// "mime.types" files may also contain lines with just a mimeType without
		// an extension but we skip them as they provide no mapping info.
		continue;
		}
		List<Element> lineElements = new ArrayList<>(split.length);
		for (String s : split) {
		boolean keepExisting = s.startsWith("?");
		if (keepExisting) {
		s = s.substring(1);
		}
		if (s.isEmpty()) {
		throw new IllegalArgumentException("Invalid entry in '" + line + "'");
		}
		lineElements.add(new Element(keepExisting, s));
		}

		// MIME type -> first extension (one mapping)
		// This will override any earlier mapping from this MIME type to another
		// extension, unless this MIME type was prefixed with '?'.
		Element mimeElement = lineElements.get(0);
		List<Element> extensionElements = lineElements.subList(1, lineElements.size());
		String firstExtension = extensionElements.get(0).s;
		maybePut(mimeTypeToExtension, mimeElement, firstExtension);

		// extension -> MIME type (one or more mappings).
		// This will override any earlier mapping from this extension to another
		// MIME type, unless this extension was prefixed with '?'.
		for (Element extensionElement : extensionElements) {
		maybePut(extensionToMimeType, extensionElement, mimeElement.s);
		}
		}
		} catch (IOException \| RuntimeException e) {
		throw new RuntimeException("Failed to parse " + resource, e);
		}
		}

		@Override
		protected String guessExtensionFromLowerCaseMimeType(String mimeType) {
		return mMimeTypeToExtension.get(mimeType);
		}

		@Override
		protected String guessMimeTypeFromLowerCaseExtension(String extension) {
		return mExtensionToMimeType.get(extension);
		}
		}