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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 "AndroidLog.h"
     30 #include "Command.h"
     31 #include "Connection.h"
     32 #include "DebugServer.h"
     33 #include "Frame.h"
     34 #include "RenderTreeAsText.h"
     35 #include "RenderView.h"
     36 #include "WebViewCore.h"
     37 #include <utils/Log.h>
     38 #include <wtf/text/CString.h>
     39 
     40 #if ENABLE(WDS)
     41 
     42 using namespace WebCore;
     43 
     44 namespace android {
     45 
     46 namespace WDS {
     47 
     48 //------------------------------------------------------------------------------
     49 // Actual commands -- XXX should be moved somewhere else
     50 //------------------------------------------------------------------------------
     51 static bool callDumpRenderTree(const Frame* frame, const Connection* conn) {
     52     CString str = externalRepresentation(frame->contentRenderer()).latin1();
     53     conn->write(str.data(), str.length());
     54     return true;
     55 }
     56 
     57 static bool callDumpDomTree(const Frame* frame, const Connection* conn) {
     58     WebViewCore::getWebViewCore(frame->view())->dumpDomTree(true);
     59 
     60     FILE* f = fopen(DOM_TREE_LOG_FILE, "r");
     61     if (!f) {
     62         conn->write("Dom tree written to logcat\n");
     63     } else {
     64         char buf[512];
     65         while (true) {
     66             int nread = fread(buf, 1, sizeof(buf), f);
     67             if (nread <= 0)
     68                 break;
     69             conn->write(buf, nread);
     70         }
     71         fclose(f);
     72     }
     73     return true;
     74 }
     75 
     76 class WebCoreHandler : public Handler {
     77 public:
     78     virtual void post(TargetThreadFunction func, void* v) const {
     79         callOnMainThread(func, v);
     80     }
     81 };
     82 static WebCoreHandler s_webcoreHandler;
     83 
     84 //------------------------------------------------------------------------------
     85 // End command section
     86 //------------------------------------------------------------------------------
     87 
     88 class InternalCommand : public Command {
     89 public:
     90     InternalCommand(const Command* comm, const Frame* frame,
     91             const Connection* connection)
     92         : Command(*comm)
     93         , m_frame(frame)
     94         , m_connection(connection) {}
     95     virtual ~InternalCommand() { delete m_connection; }
     96 
     97     void doCommand() const {
     98         ALOGD("Executing command '%s' (%s)", m_name, m_description);
     99         if (!m_dispatch(m_frame, m_connection))
    100             // XXX: Have useful failure messages
    101             m_connection->write("EPIC FAIL!\n", 11);
    102     }
    103 
    104 private:
    105     const Frame* m_frame;
    106     const Connection* m_connection;
    107 };
    108 
    109 static void commandDispatcher(void* v) {
    110     InternalCommand* c = static_cast<InternalCommand*>(v);
    111     c->doCommand();
    112     delete c;
    113 }
    114 
    115 void Command::dispatch() {
    116     m_handler.post(commandDispatcher, this);
    117 }
    118 
    119 Vector<const Command*>* Command::s_commands;
    120 
    121 void Command::Init() {
    122     // Do not initialize twice.
    123     if (s_commands)
    124         return;
    125     // XXX: Move this somewhere else.
    126     s_commands = new Vector<const Command*>();
    127     s_commands->append(new Command("DDOM", "Dump Dom Tree",
    128                 callDumpDomTree, s_webcoreHandler));
    129     s_commands->append(new Command("DDRT", "Dump Render Tree",
    130                 callDumpRenderTree, s_webcoreHandler));
    131 }
    132 
    133 Command* Command::Find(const Connection* conn) {
    134     char buf[COMMAND_LENGTH];
    135     if (conn->read(buf, sizeof(buf)) != COMMAND_LENGTH)
    136         return NULL;
    137 
    138     // Linear search of commands. TODO: binary search when more commands are
    139     // added.
    140     Vector<const Command*>::const_iterator i = s_commands->begin();
    141     Vector<const Command*>::const_iterator end = s_commands->end();
    142     while (i != end) {
    143         if (strncmp(buf, (*i)->name(), sizeof(buf)) == 0)
    144             return new InternalCommand(*i, server()->getFrame(0), conn);
    145         i++;
    146     }
    147     return NULL;
    148 }
    149 
    150 } // end namespace WDS
    151 
    152 } // end namespace android
    153 
    154 #endif
    155