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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
      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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. 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 APPLE INC. ``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 APPLE INC. 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 #include "config.h"
     27 #include "Logging.h"
     28 
     29 #include "PlatformString.h"
     30 #include <wtf/OwnArrayPtr.h>
     31 
     32 namespace WebCore {
     33 
     34 static inline void initializeWithUserDefault(WTFLogChannel& channel)
     35 {
     36     DWORD length = GetEnvironmentVariableA(channel.defaultName, 0, 0);
     37     if (!length)
     38         return;
     39 
     40     OwnArrayPtr<char> buffer = adoptArrayPtr(new char[length]);
     41 
     42     if (!GetEnvironmentVariableA(channel.defaultName, buffer.get(), length))
     43         return;
     44 
     45     String variableValue(buffer.get());
     46 
     47     static const String& hexadecimalPrefix = *new String("0x");
     48     if (variableValue.length() < 3 || !variableValue.startsWith(hexadecimalPrefix, false)) {
     49         LOG_ERROR("Unable to parse hex value for %s (%s), logging is off", channel.defaultName, buffer.get());
     50         return;
     51     }
     52 
     53     String unprefixedValue = variableValue.substring(2);
     54 
     55     // Now parse the unprefixed string as a hexadecimal number.
     56     bool parsedSuccessfully = false;
     57     unsigned logLevel = unprefixedValue.toUIntStrict(&parsedSuccessfully, 16);
     58 
     59     if (!parsedSuccessfully) {
     60         LOG_ERROR("Unable to parse hex value for %s (%s), logging is off", channel.defaultName, buffer.get());
     61         return;
     62     }
     63 
     64     if ((logLevel & channel.mask) == channel.mask)
     65         channel.state = WTFLogChannelOn;
     66     else
     67         channel.state = WTFLogChannelOff;
     68 }
     69 
     70 void InitializeLoggingChannelsIfNecessary()
     71 {
     72     static bool haveInitializedLoggingChannels = false;
     73     if (haveInitializedLoggingChannels)
     74         return;
     75     haveInitializedLoggingChannels = true;
     76 
     77     initializeWithUserDefault(LogNotYetImplemented);
     78     initializeWithUserDefault(LogFrames);
     79     initializeWithUserDefault(LogLoading);
     80     initializeWithUserDefault(LogPopupBlocking);
     81     initializeWithUserDefault(LogEvents);
     82     initializeWithUserDefault(LogEditing);
     83     initializeWithUserDefault(LogLiveConnect);
     84     initializeWithUserDefault(LogIconDatabase);
     85     initializeWithUserDefault(LogSQLDatabase);
     86     initializeWithUserDefault(LogSpellingAndGrammar);
     87     initializeWithUserDefault(LogBackForward);
     88     initializeWithUserDefault(LogHistory);
     89     initializeWithUserDefault(LogPageCache);
     90     initializeWithUserDefault(LogPlatformLeaks);
     91     initializeWithUserDefault(LogResourceLoading);
     92     initializeWithUserDefault(LogNetwork);
     93     initializeWithUserDefault(LogFTP);
     94     initializeWithUserDefault(LogThreading);
     95     initializeWithUserDefault(LogStorageAPI);
     96     initializeWithUserDefault(LogMedia);
     97     initializeWithUserDefault(LogPlugins);
     98     initializeWithUserDefault(LogArchives);
     99     initializeWithUserDefault(LogProgress);
    100     initializeWithUserDefault(LogFileAPI);
    101 }
    102 
    103 } // namespace WebCore
    104