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1 /*
2  * Copyright 2008, The Android Open Source Project
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *  * Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  *  * Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #define LOG_TAG "wds"
27 #include "config.h"
28 
29 #include "Command.h"
30 #include "Connection.h"
31 #include "DebugServer.h"
32 #include "wtf/MainThread.h"
33 #include "wtf/Threading.h"
34 #include <arpa/inet.h>
35 #include <cutils/properties.h>
36 #include <errno.h>
37 #include <string.h>
38 #include <sys/socket.h>
39 #include <sys/types.h>
40 #include <utils/Log.h>
41 
42 #if ENABLE(WDS)
43 
44 #define DEFAULT_PORT 9999
45 #define log_errno(x) ALOGE("%s: %d", x, strerror(errno))
46 
47 namespace android {
48 
49 namespace WDS {
50 
51 static DebugServer* s_server = NULL;
52 
53 // Main thread function for createThread
mainThread(void * v)54 static void* mainThread(void* v) {
55     DebugServer* server = static_cast<DebugServer*>(v);
56     server->start();
57     delete server;
58     s_server = NULL;
59     return NULL;
60 }
61 
server()62 DebugServer* server() {
63     if (s_server == NULL)
64         s_server = new DebugServer();
65     return s_server;
66 }
67 
DebugServer()68 DebugServer::DebugServer() {
69     // Read webcore.wds.enable to determine if the debug server should run
70     char buf[PROPERTY_VALUE_MAX];
71     int ret = property_get("webcore.wds.enable", buf, NULL);
72     if (ret != -1 && strcmp(buf, "1") == 0) {
73         ALOGD("WDS Enabled");
74         m_threadId = createThread(mainThread, this, "WDS");
75     }
76     // Initialize the available commands.
77     Command::Init();
78 }
79 
start()80 void DebugServer::start() {
81     ALOGD("DebugServer thread started");
82 
83     ConnectionServer cs;
84     if (!cs.connect(DEFAULT_PORT)) {
85         ALOGE("Failed to start the server socket connection");
86         return;
87     }
88 
89     while (true ) {
90         ALOGD("Waiting for incoming connections...");
91         Connection* conn = cs.accept();
92         if (!conn) {
93             log_errno("Failed to accept new connections");
94             return;
95         }
96         ALOGD("...Connection established");
97 
98         Command* c = Command::Find(conn);
99         if (!c) {
100             ALOGE("Could not find matching command");
101             delete conn;
102         } else {
103             // Dispatch the command, it will handle cleaning up the connection
104             // when finished.
105             c->dispatch();
106         }
107     }
108 
109     ALOGD("DebugServer thread finished");
110 }
111 
112 } // end namespace WDS
113 
114 } // end namespace android
115 
116 #endif
117