Java tutorial
/** * ownCloud Android client application * * Copyright (C) 2015 ownCloud Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package com.synox.android.operations; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.NameValuePair; import org.json.JSONException; import org.json.JSONObject; import com.synox.android.authentication.OAuth2Constants; import com.synox.android.lib.common.OwnCloudClient; import com.synox.android.lib.common.operations.RemoteOperation; import com.synox.android.lib.common.operations.RemoteOperationResult; import com.synox.android.lib.common.operations.RemoteOperationResult.ResultCode; import com.synox.android.lib.common.utils.Log_OC; public class OAuth2GetAccessToken extends RemoteOperation { private static final String TAG = OAuth2GetAccessToken.class.getSimpleName(); private String mClientId; private String mRedirectUri; private String mGrantType; private String mOAuth2AuthorizationResponse; private Map<String, String> mOAuth2ParsedAuthorizationResponse; private Map<String, String> mResultTokenMap; public OAuth2GetAccessToken(String clientId, String redirectUri, String grantType, String oAuth2AuthorizationResponse) { mClientId = clientId; mRedirectUri = redirectUri; mGrantType = grantType; mOAuth2AuthorizationResponse = oAuth2AuthorizationResponse; mOAuth2ParsedAuthorizationResponse = new HashMap<>(); mResultTokenMap = null; } /* public Map<String, String> getResultTokenMap() { return mResultTokenMap; } */ @Override protected RemoteOperationResult run(OwnCloudClient client) { RemoteOperationResult result = null; PostMethod postMethod = null; try { parseAuthorizationResponse(); if (mOAuth2ParsedAuthorizationResponse.keySet().contains(OAuth2Constants.KEY_ERROR)) { if (OAuth2Constants.VALUE_ERROR_ACCESS_DENIED .equals(mOAuth2ParsedAuthorizationResponse.get(OAuth2Constants.KEY_ERROR))) { result = new RemoteOperationResult(ResultCode.OAUTH2_ERROR_ACCESS_DENIED); } else { result = new RemoteOperationResult(ResultCode.OAUTH2_ERROR); } } if (result == null) { NameValuePair[] nameValuePairs = new NameValuePair[4]; nameValuePairs[0] = new NameValuePair(OAuth2Constants.KEY_GRANT_TYPE, mGrantType); nameValuePairs[1] = new NameValuePair(OAuth2Constants.KEY_CODE, mOAuth2ParsedAuthorizationResponse.get(OAuth2Constants.KEY_CODE)); nameValuePairs[2] = new NameValuePair(OAuth2Constants.KEY_REDIRECT_URI, mRedirectUri); nameValuePairs[3] = new NameValuePair(OAuth2Constants.KEY_CLIENT_ID, mClientId); //nameValuePairs[4] = new NameValuePair(OAuth2Constants.KEY_SCOPE, mOAuth2ParsedAuthorizationResponse.get(OAuth2Constants.KEY_SCOPE)); postMethod = new PostMethod(client.getWebdavUri().toString()); postMethod.setRequestBody(nameValuePairs); int status = client.executeMethod(postMethod); String response = postMethod.getResponseBodyAsString(); if (response != null && response.length() > 0) { JSONObject tokenJson = new JSONObject(response); parseAccessTokenResult(tokenJson); if (mResultTokenMap.get(OAuth2Constants.KEY_ERROR) != null || mResultTokenMap.get(OAuth2Constants.KEY_ACCESS_TOKEN) == null) { result = new RemoteOperationResult(ResultCode.OAUTH2_ERROR); } else { result = new RemoteOperationResult(true, status, postMethod.getResponseHeaders()); ArrayList<Object> data = new ArrayList<>(); data.add(mResultTokenMap); result.setData(data); } } else { client.exhaustResponse(postMethod.getResponseBodyAsStream()); result = new RemoteOperationResult(false, status, postMethod.getResponseHeaders()); } } } catch (Exception e) { result = new RemoteOperationResult(e); } finally { if (postMethod != null) postMethod.releaseConnection(); // let the connection available for other methods if (result.isSuccess()) { Log_OC.i(TAG, "OAuth2 TOKEN REQUEST with auth code " + mOAuth2ParsedAuthorizationResponse.get("code") + " to " + client.getWebdavUri() + ": " + result.getLogMessage()); } else if (result.getException() != null) { Log_OC.e(TAG, "OAuth2 TOKEN REQUEST with auth code " + mOAuth2ParsedAuthorizationResponse.get("code") + " to " + client.getWebdavUri() + ": " + result.getLogMessage(), result.getException()); } else if (result.getCode() == ResultCode.OAUTH2_ERROR) { Log_OC.e(TAG, "OAuth2 TOKEN REQUEST with auth code " + mOAuth2ParsedAuthorizationResponse.get("code") + " to " + client.getWebdavUri() + ": " + ((mResultTokenMap != null) ? mResultTokenMap.get(OAuth2Constants.KEY_ERROR) : "NULL")); } else { Log_OC.e(TAG, "OAuth2 TOKEN REQUEST with auth code " + mOAuth2ParsedAuthorizationResponse.get("code") + " to " + client.getWebdavUri() + ": " + result.getLogMessage()); } } return result; } private void parseAuthorizationResponse() { String[] pairs = mOAuth2AuthorizationResponse.split("&"); int i = 0; String key = ""; String value = ""; StringBuilder sb = new StringBuilder(); while (pairs.length > i) { int j = 0; String[] part = pairs[i].split("="); while (part.length > j) { String p = part[j]; if (j == 0) { key = p; sb.append(key).append(" = "); } else if (j == 1) { value = p; mOAuth2ParsedAuthorizationResponse.put(key, value); sb.append(value).append("\n"); } Log_OC.v(TAG, "[" + i + "," + j + "] = " + p); j++; } i++; } } private void parseAccessTokenResult(JSONObject tokenJson) throws JSONException { mResultTokenMap = new HashMap<>(); if (tokenJson.has(OAuth2Constants.KEY_ACCESS_TOKEN)) { mResultTokenMap.put(OAuth2Constants.KEY_ACCESS_TOKEN, tokenJson.getString(OAuth2Constants.KEY_ACCESS_TOKEN)); } if (tokenJson.has(OAuth2Constants.KEY_TOKEN_TYPE)) { mResultTokenMap.put(OAuth2Constants.KEY_TOKEN_TYPE, tokenJson.getString(OAuth2Constants.KEY_TOKEN_TYPE)); } if (tokenJson.has(OAuth2Constants.KEY_EXPIRES_IN)) { mResultTokenMap.put(OAuth2Constants.KEY_EXPIRES_IN, tokenJson.getString(OAuth2Constants.KEY_EXPIRES_IN)); } if (tokenJson.has(OAuth2Constants.KEY_REFRESH_TOKEN)) { mResultTokenMap.put(OAuth2Constants.KEY_REFRESH_TOKEN, tokenJson.getString(OAuth2Constants.KEY_REFRESH_TOKEN)); } if (tokenJson.has(OAuth2Constants.KEY_SCOPE)) { mResultTokenMap.put(OAuth2Constants.KEY_SCOPE, tokenJson.getString(OAuth2Constants.KEY_SCOPE)); } if (tokenJson.has(OAuth2Constants.KEY_ERROR)) { mResultTokenMap.put(OAuth2Constants.KEY_ERROR, tokenJson.getString(OAuth2Constants.KEY_ERROR)); } if (tokenJson.has(OAuth2Constants.KEY_ERROR_DESCRIPTION)) { mResultTokenMap.put(OAuth2Constants.KEY_ERROR_DESCRIPTION, tokenJson.getString(OAuth2Constants.KEY_ERROR_DESCRIPTION)); } if (tokenJson.has(OAuth2Constants.KEY_ERROR_URI)) { mResultTokenMap.put(OAuth2Constants.KEY_ERROR_URI, tokenJson.getString(OAuth2Constants.KEY_ERROR_URI)); } } }