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
32namespace WebCore {
33
34static inline void initializeWithUserDefault(WTFLogChannel& channel)
35{
36    DWORD length = GetEnvironmentVariableA(channel.defaultName, 0, 0);
37    if (!length)
38        return;
39
40    OwnArrayPtr<char> buffer(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
70void 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(LogTextConversion);
84    initializeWithUserDefault(LogIconDatabase);
85    initializeWithUserDefault(LogSQLDatabase);
86    initializeWithUserDefault(LogSpellingAndGrammar);
87    initializeWithUserDefault(LogBackForward);
88    initializeWithUserDefault(LogHistory);
89    initializeWithUserDefault(LogPageCache);
90    initializeWithUserDefault(LogPlatformLeaks);
91    initializeWithUserDefault(LogNetwork);
92    initializeWithUserDefault(LogFTP);
93    initializeWithUserDefault(LogThreading);
94    initializeWithUserDefault(LogStorageAPI);
95    initializeWithUserDefault(LogMedia);
96    initializeWithUserDefault(LogPlugins);
97    initializeWithUserDefault(LogArchives);
98}
99
100} // namespace WebCore
101