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1 | package ro.ieval.fonbot; | |
2 | ||
3 | import static ro.ieval.fonbot.R.string.*; | |
4 | import static ro.ieval.fonbot.Utils.toNonNull; | |
5 | ||
6 | import java.io.InputStream; | |
7 | import java.io.OutputStream; | |
8 | import java.net.URL; | |
9 | import java.util.Collection; | |
10 | ||
11 | import javax.net.ssl.HttpsURLConnection; | |
12 | import org.eclipse.jdt.annotation.Nullable; | |
13 | ||
14 | import android.content.Context; | |
15 | import android.preference.PreferenceManager; | |
16 | import android.util.Base64; | |
17 | import android.util.Log; | |
18 | ||
19 | import com.google.android.gcm.GCMRegistrar; | |
20 | ||
21 | /* | |
22 | * Copyright © 2013 Marius Gavrilescu | |
23 | * | |
24 | * This file is part of FonBot. | |
25 | * | |
26 | * FonBot is free software: you can redistribute it and/or modify | |
27 | * it under the terms of the GNU General Public License as published by | |
28 | * the Free Software Foundation, either version 3 of the License, or | |
29 | * (at your option) any later version. | |
30 | * | |
31 | * FonBot is distributed in the hope that it will be useful, | |
32 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
33 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
34 | * GNU General Public License for more details. | |
35 | * | |
36 | * You should have received a copy of the GNU General Public License | |
37 | * along with FonBot. If not, see <http://www.gnu.org/licenses/>. | |
38 | */ | |
39 | ||
40 | /** | |
41 | * ExecutableRunnable that makes a HTTPS call to the server and hands the response to a callback | |
42 | * | |
43 | * @author Marius Gavrilescu <marius@ieval.ro> | |
44 | */ | |
45 | public final class HttpCallExecutableRunnable extends ExecutableRunnable{ | |
46 | ||
47 | /** | |
48 | * Callback which is run after a HTTP call. | |
49 | * | |
50 | * @author Marius Gavrilescu | |
51 | */ | |
52 | public interface ResultCallback{ | |
53 | /** | |
54 | * Callback invoked if the HTTP call is successful. | |
55 | * | |
56 | * @param responseCode HTTP response code | |
57 | * @param responseMessage HTTP response message | |
58 | * @param inputStream HTTP content InputStream | |
59 | */ | |
60 | void onResult(final int responseCode, final String responseMessage, final InputStream inputStream); | |
61 | /** | |
62 | * Callback invoked if the HTTP call is unsuccessful. | |
63 | * | |
64 | * @param error localized error message | |
65 | */ | |
66 | void onError(final String error); | |
67 | } | |
68 | ||
69 | /** | |
70 | * List of extra request headers. | |
71 | */ | |
72 | private final Collection<Header> headers; | |
73 | /** | |
74 | * Context instance used by this class | |
75 | */ | |
76 | private final Context context; | |
77 | /** | |
78 | * Data to send to the server | |
79 | */ | |
80 | private final byte[] data; | |
81 | /** | |
82 | * Server URL path | |
83 | */ | |
84 | private final String path; | |
85 | /** | |
86 | * Callback to run after the request returns | |
87 | */ | |
88 | private final ResultCallback callback; | |
89 | /** If true, the task should be retried if it fails */ | |
90 | private final boolean mustRetryTask; | |
91 | ||
92 | /** | |
93 | * Constructs a SendHttpMessageAsyncTask which sends a binary message. | |
94 | * | |
95 | * @param path URL path | |
96 | * @param headers the extra headers | |
97 | * @param context the context instance | |
98 | * @param resultCallback {@link ResultCallback} instance | |
99 | * @param mustRetryTask true if this task should be retried if it fails | |
100 | * @param data the message to send | |
101 | */ | |
102 | public HttpCallExecutableRunnable(final String path, final @Nullable Collection<Header> headers, final Context context, final @Nullable ResultCallback resultCallback, final boolean mustRetryTask, final byte[] data){//NOPMD array is supposed to be immutable. | |
103 | this.path=path; | |
104 | this.headers=headers; | |
105 | this.context=context; | |
106 | this.callback=resultCallback; | |
107 | this.mustRetryTask=mustRetryTask; | |
108 | this.data=data; | |
109 | } | |
110 | ||
111 | /** | |
112 | * Constructs a SendHttpMessageAsyncTask which sends a text message. | |
113 | * | |
114 | * @param path URL path | |
115 | * @param headers the extra headers | |
116 | * @param context the context instance | |
117 | * @param resultCallback {@link ResultCallback} instance | |
118 | * @param mustRetryTask true if this task should be retried if it fails | |
119 | * @param message message to send | |
120 | */ | |
121 | public HttpCallExecutableRunnable(final String path, final @Nullable Collection<Header> headers, final Context context, final @Nullable ResultCallback resultCallback, final boolean mustRetryTask, final String... message){ | |
122 | this.path=path; | |
123 | this.headers=headers; | |
124 | this.context=context; | |
125 | this.callback=resultCallback; | |
126 | this.mustRetryTask=mustRetryTask; | |
127 | if(message.length == 0) | |
128 | this.data=null;//NOPMD final field | |
129 | else | |
130 | this.data=Utils.join(" ", message).getBytes(); | |
131 | } | |
132 | ||
133 | @Override | |
134 | public void run() { | |
135 | try { | |
136 | final URL url=Utils.getServerURL(toNonNull(context),toNonNull(path)); | |
137 | final HttpsURLConnection conn=(HttpsURLConnection) url.openConnection(); | |
138 | if(data!=null){ | |
139 | conn.setDoOutput(true); | |
140 | conn.setFixedLengthStreamingMode(data.length); | |
141 | } | |
142 | conn.setRequestProperty("X-ID", GCMRegistrar.getRegistrationId(context)); | |
143 | final String user=PreferenceManager.getDefaultSharedPreferences(context).getString("username", null); | |
144 | final String password=PreferenceManager.getDefaultSharedPreferences(context).getString("password", null); | |
145 | if(user == null || password == null){ | |
146 | if(callback!=null) | |
147 | callback.onError(toNonNull(context.getString(user_or_password_not_set))); | |
148 | return; | |
149 | } | |
150 | ||
151 | conn.setRequestProperty("Authorization", "Basic "+Base64.encodeToString( | |
152 | (user+':'+password).getBytes(), Base64.NO_WRAP)); | |
153 | if(headers != null) | |
154 | for (final Header header : headers) | |
155 | conn.setRequestProperty(header.name, header.value); | |
156 | conn.connect(); | |
157 | if(data!=null){ | |
158 | final OutputStream stream=conn.getOutputStream(); | |
159 | stream.write(data); | |
160 | stream.close(); | |
161 | } | |
162 | Log.d(getClass().getName(),"HTTP Response: "+conn.getResponseCode()+" "+conn.getResponseMessage()); | |
163 | final String message=conn.getResponseMessage(); | |
164 | if(message==null && callback != null) | |
165 | callback.onError(toNonNull(context.getString(no_response_returned_from_server))); | |
166 | else if(message != null && callback != null) | |
167 | callback.onResult(conn.getResponseCode(), message, | |
168 | toNonNull(conn.getInputStream())); | |
169 | conn.disconnect(); | |
170 | } catch (Exception e) { | |
171 | e.printStackTrace(); | |
172 | if(callback != null) | |
173 | callback.onError(toNonNull(context.getString(connection_error))); | |
174 | if(mustRetryTask) | |
175 | retry(); | |
176 | } | |
177 | } | |
178 | } |