Java tutorial
/* * Copyright (C) 2014 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 com.android.mms.service; import com.android.mms.service.exception.MmsHttpException; import com.android.mms.service.http.NameResolver; import com.android.mms.service.http.NetworkAwareHttpClient; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpHost; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.StatusLine; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.conn.params.ConnRouteParams; import org.apache.http.entity.ByteArrayEntity; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.apache.http.params.HttpProtocolParams; import android.content.Context; import android.net.http.AndroidHttpClient; import android.text.TextUtils; import com.klinker.android.logger.Log; import java.io.DataInputStream; import java.io.IOException; import java.net.URI; import java.net.URISyntaxException; import java.util.Locale; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * HTTP utils to make HTTP request to MMSC */ public class HttpUtils { private static final String TAG = "HttpUtils"; public static final int HTTP_POST_METHOD = 1; public static final int HTTP_GET_METHOD = 2; // Definition for necessary HTTP headers. private static final String HDR_KEY_ACCEPT = "Accept"; private static final String HDR_KEY_ACCEPT_LANGUAGE = "Accept-Language"; private static final String HDR_VALUE_ACCEPT = "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic"; private HttpUtils() { // To forbidden instantiate this class. } /** * A helper method to send or retrieve data through HTTP protocol. * * @param url The URL used in a GET request. Null when the method is * HTTP_POST_METHOD. * @param pdu The data to be POST. Null when the method is HTTP_GET_METHOD. * @param method HTTP_POST_METHOD or HTTP_GET_METHOD. * @param isProxySet If proxy is set * @param proxyHost The host of the proxy * @param proxyPort The port of the proxy * @param resolver The custom name resolver to use * @param useIpv6 If we should use IPv6 address when the HTTP client resolves the host name * @param mmsConfig The MmsConfig to use * @return A byte array which contains the response data. * If an HTTP error code is returned, an IOException will be thrown. * @throws com.android.mms.service.exception.MmsHttpException if HTTP request gets error response (>=400) */ public static byte[] httpConnection(Context context, String url, byte[] pdu, int method, boolean isProxySet, String proxyHost, int proxyPort, NameResolver resolver, boolean useIpv6, MmsConfig.Overridden mmsConfig) throws MmsHttpException { final String methodString = getMethodString(method); Log.v(TAG, "HttpUtils: request param list\n" + "url=" + url + "\n" + "method=" + methodString + "\n" + "isProxySet=" + isProxySet + "\n" + "proxyHost=" + proxyHost + "\n" + "proxyPort=" + proxyPort + "\n" + "size=" + (pdu != null ? pdu.length : 0)); NetworkAwareHttpClient client = null; try { // Make sure to use a proxy which supports CONNECT. URI hostUrl = new URI(url); HttpHost target = new HttpHost(hostUrl.getHost(), hostUrl.getPort(), HttpHost.DEFAULT_SCHEME_NAME); client = createHttpClient(context, resolver, useIpv6, mmsConfig); HttpRequest req = null; switch (method) { case HTTP_POST_METHOD: ByteArrayEntity entity = new ByteArrayEntity(pdu); // Set request content type. entity.setContentType("application/vnd.wap.mms-message"); HttpPost post = new HttpPost(url); post.setEntity(entity); req = post; break; case HTTP_GET_METHOD: req = new HttpGet(url); break; } // Set route parameters for the request. HttpParams params = client.getParams(); if (isProxySet) { ConnRouteParams.setDefaultProxy(params, new HttpHost(proxyHost, proxyPort)); } req.setParams(params); // Set necessary HTTP headers for MMS transmission. req.addHeader(HDR_KEY_ACCEPT, HDR_VALUE_ACCEPT); // UA Profile URL header String xWapProfileTagName = mmsConfig.getUaProfTagName(); String xWapProfileUrl = mmsConfig.getUaProfUrl(); if (xWapProfileUrl != null) { Log.v(TAG, "HttpUtils: xWapProfUrl=" + xWapProfileUrl); req.addHeader(xWapProfileTagName, xWapProfileUrl); } // Extra http parameters. Split by '|' to get a list of value pairs. // Separate each pair by the first occurrence of ':' to obtain a name and // value. Replace the occurrence of the string returned by // MmsConfig.getHttpParamsLine1Key() with the users telephone number inside // the value. And replace the occurrence of the string returned by // MmsConfig.getHttpParamsNaiKey() with the users NAI(Network Access Identifier) // inside the value. String extraHttpParams = mmsConfig.getHttpParams(); if (!TextUtils.isEmpty(extraHttpParams)) { // Parse the parameter list String paramList[] = extraHttpParams.split("\\|"); for (String paramPair : paramList) { String splitPair[] = paramPair.split(":", 2); if (splitPair.length == 2) { final String name = splitPair[0].trim(); final String value = resolveMacro(context, splitPair[1].trim(), mmsConfig); if (!TextUtils.isEmpty(name) && !TextUtils.isEmpty(value)) { req.addHeader(name, value); } } } } req.addHeader(HDR_KEY_ACCEPT_LANGUAGE, getCurrentAcceptLanguage(Locale.getDefault())); final HttpResponse response = client.execute(target, req); final StatusLine status = response.getStatusLine(); final HttpEntity entity = response.getEntity(); Log.d(TAG, "HttpUtils: status=" + status + " size=" + (entity != null ? entity.getContentLength() : -1)); for (Header header : req.getAllHeaders()) { if (header != null) { Log.v(TAG, "HttpUtils: header " + header.getName() + "=" + header.getValue()); } } byte[] body = null; if (entity != null) { try { if (entity.getContentLength() > 0) { body = new byte[(int) entity.getContentLength()]; DataInputStream dis = new DataInputStream(entity.getContent()); try { dis.readFully(body); } finally { try { dis.close(); } catch (IOException e) { Log.e(TAG, "HttpUtils: Error closing input stream: " + e.getMessage()); } } } if (entity.isChunked()) { Log.d(TAG, "HttpUtils: transfer encoding is chunked"); int bytesTobeRead = mmsConfig.getMaxMessageSize(); byte[] tempBody = new byte[bytesTobeRead]; DataInputStream dis = new DataInputStream(entity.getContent()); try { int bytesRead = 0; int offset = 0; boolean readError = false; do { try { bytesRead = dis.read(tempBody, offset, bytesTobeRead); } catch (IOException e) { readError = true; Log.e(TAG, "HttpUtils: error reading input stream", e); break; } if (bytesRead > 0) { bytesTobeRead -= bytesRead; offset += bytesRead; } } while (bytesRead >= 0 && bytesTobeRead > 0); if (bytesRead == -1 && offset > 0 && !readError) { // offset is same as total number of bytes read // bytesRead will be -1 if the data was read till the eof body = new byte[offset]; System.arraycopy(tempBody, 0, body, 0, offset); Log.d(TAG, "HttpUtils: Chunked response length " + offset); } else { Log.e(TAG, "HttpUtils: Response entity too large or empty"); } } finally { try { dis.close(); } catch (IOException e) { Log.e(TAG, "HttpUtils: Error closing input stream", e); } } } } finally { if (entity != null) { entity.consumeContent(); } } } if (status.getStatusCode() != 200) { // HTTP 200 is success. StringBuilder sb = new StringBuilder(); if (body != null) { sb.append("response: text=").append(new String(body)).append('\n'); } for (Header header : req.getAllHeaders()) { if (header != null) { sb.append("req header: ").append(header.getName()).append('=').append(header.getValue()) .append('\n'); } } for (Header header : response.getAllHeaders()) { if (header != null) { sb.append("resp header: ").append(header.getName()).append('=').append(header.getValue()) .append('\n'); } } Log.e(TAG, "HttpUtils: error response -- \n" + "mStatusCode=" + status.getStatusCode() + "\n" + "reason=" + status.getReasonPhrase() + "\n" + "url=" + url + "\n" + "method=" + methodString + "\n" + "isProxySet=" + isProxySet + "\n" + "proxyHost=" + proxyHost + "\n" + "proxyPort=" + proxyPort + (sb != null ? "\n" + sb.toString() : "")); throw new MmsHttpException(status.getReasonPhrase()); } return body; } catch (IOException e) { Log.e(TAG, "HttpUtils: IO failure", e); throw new MmsHttpException(e); } catch (URISyntaxException e) { Log.e(TAG, "HttpUtils: invalid url " + url); throw new MmsHttpException("Invalid url " + url); } finally { if (client != null) { client.close(); } } } private static String getMethodString(int method) { return ((method == HTTP_POST_METHOD) ? "POST" : ((method == HTTP_GET_METHOD) ? "GET" : "UNKNOWN")); } /** * Create an HTTP client * * @param context * @return {@link android.net.http.AndroidHttpClient} */ private static NetworkAwareHttpClient createHttpClient(Context context, NameResolver resolver, boolean useIpv6, MmsConfig.Overridden mmsConfig) { final String userAgent = mmsConfig.getUserAgent(); final NetworkAwareHttpClient client = NetworkAwareHttpClient.newInstance(userAgent, context, resolver, useIpv6); final HttpParams params = client.getParams(); HttpProtocolParams.setContentCharset(params, "UTF-8"); // set the socket timeout int soTimeout = mmsConfig.getHttpSocketTimeout(); Log.v(TAG, "HttpUtils: createHttpClient w/ socket timeout " + soTimeout + " ms, UA=" + userAgent); HttpConnectionParams.setSoTimeout(params, soTimeout); return client; } private static final String ACCEPT_LANG_FOR_US_LOCALE = "en-US"; /** * Return the Accept-Language header. Use the current locale plus * US if we are in a different locale than US. * This code copied from the browser's WebSettings.java * * @return Current AcceptLanguage String. */ public static String getCurrentAcceptLanguage(Locale locale) { final StringBuilder buffer = new StringBuilder(); addLocaleToHttpAcceptLanguage(buffer, locale); if (!Locale.US.equals(locale)) { if (buffer.length() > 0) { buffer.append(", "); } buffer.append(ACCEPT_LANG_FOR_US_LOCALE); } return buffer.toString(); } /** * Convert obsolete language codes, including Hebrew/Indonesian/Yiddish, * to new standard. */ private static String convertObsoleteLanguageCodeToNew(String langCode) { if (langCode == null) { return null; } if ("iw".equals(langCode)) { // Hebrew return "he"; } else if ("in".equals(langCode)) { // Indonesian return "id"; } else if ("ji".equals(langCode)) { // Yiddish return "yi"; } return langCode; } private static void addLocaleToHttpAcceptLanguage(StringBuilder builder, Locale locale) { final String language = convertObsoleteLanguageCodeToNew(locale.getLanguage()); if (language != null) { builder.append(language); final String country = locale.getCountry(); if (country != null) { builder.append("-"); builder.append(country); } } } private static final Pattern MACRO_P = Pattern.compile("##(\\S+)##"); /** * Resolve the macro in HTTP param value text * For example, "something##LINE1##something" is resolved to "something9139531419something" * * @param value The HTTP param value possibly containing macros * @return The HTTP param with macro resolved to real value */ private static String resolveMacro(Context context, String value, MmsConfig.Overridden mmsConfig) { if (TextUtils.isEmpty(value)) { return value; } final Matcher matcher = MACRO_P.matcher(value); int nextStart = 0; StringBuilder replaced = null; while (matcher.find()) { if (replaced == null) { replaced = new StringBuilder(); } final int matchedStart = matcher.start(); if (matchedStart > nextStart) { replaced.append(value.substring(nextStart, matchedStart)); } final String macro = matcher.group(1); final String macroValue = mmsConfig.getHttpParamMacro(context, macro); if (macroValue != null) { replaced.append(macroValue); } else { Log.w(TAG, "HttpUtils: invalid macro " + macro); } nextStart = matcher.end(); } if (replaced != null && nextStart < value.length()) { replaced.append(value.substring(nextStart)); } return replaced == null ? value : replaced.toString(); } }