The Magic Number Database

How does it work?

MagNumDB is a database that contains about 360,000 items. These items are constants, names, values all extracted from more than 9,000 header files (.h, .hxx, .hpp, .idl, etc.) provided by standard Windows and Visual Studio SDKs and WDKs.

Some values have been extracted from the very special uuid.lib file that contains the value of thousands of guids and property keys, not present anywhere else in header files. This can explain some duplicates (because names in uuid.lib are not always exactly the same as names in .h parsed files...).

It also contains around 36,0000 undocumented guids that we found ... meeeeep ...

"C2P5"

To build this database, we have tried many existing parsers, things like CLANG or other fine tools, but they just don't suit our needs. They can't handle thousands of files that don't compile together, they can't handle some specific (or just very old) Microsoft constructs or annotations, they don't remember the stack of #define directives that led to a definition, they only give you a final AST, not a partial one, etc.

So, in the end, we have written a C/C++ parser named C2P5 (for C/CPP/PreProcessor/Parser), tailored specifically for computing constants. C2P5 is capable of preprocessing, parsing and partially evaluating all header files as if they were included in a one big virtual project (that of course, does not compile) on a 32G RAM machine. It currently supports the following preprocessor and C/C++ constructs:

#define preprocessor that define constants
#define preprocessor that define expression to compute constants
C and C++ constants, strings and enum definitions, and some level of pointerness
Special GUID constructs like DECLSPEC_UUID, DEFINE_GUIDSTRUCT, MIDL_INTERFACE, you name it
PROPERTYKEY constructs
Some IDL constructs
Etc.

The parser remembers dynamic preprocessor definitions (#if, #ifdef, etc.) that are conditions for constants definitions and expression computation. All parsed items are saved in the database, as well as the associated conditions. There may be more than one item corresponding to a given name, if there are differences in their associated conditions stack.

C2P5 supports the following types of constants, regardless of the way they are defined in source files:

integer, signed or unsigned, from 8-bit to 128-bit
floating point number, single (32-bit) or double (64-bit)
globally unique identifier, or guid, uuid, CLSID, IID, etc.
string, in narrow, wide, or utf-8/16/32 formats
character, in narrow, wide, or utf-8/16/32 formats
pointer, a constant cast as a pointer
property key, or PROPERTYKEY, or PKEY, a combination of a guid (fmtid) and a 32-bit integer (id).

C2P5 and this MagNumDB web site are written in C# and use a Lucene database as a full-text search engine. C2P5 uses a custom ANTLR4cs C grammar for expression parsing, not for preprocessor parsing.

Frequently Asked Questions

Q: Can I run custom queries?
A: Yes. You can use Lucene's query syntax. Note the Database is case insensitive. Check out the list of columns with their corresponding database column names:
- Index: the item's index.
- Name: the item's name, or title. For enum values, it's prefixed with the enum's name.
  Corresponding database field: title.
- Type: the item's type, expressed in a specific, universal system.
  Corresponding database's field: valuetype, but use the value of the Storage type column for queries on items type.
- Value: the item's value. For string values, it's displayed as is w/o quotes nor escaping.
  Corresponding database field: value. There is also a typedvalue field that can contain database's Int32, Int64, Float, Double or String typed values.
- Hex Value: the item's hexadecimal value, only valid for integer types.
  There is no corresponding database field.
- Signed Value: the item's signed value, only valid for integer and double types. Useful when you found a unsigned number and want to get the corresponding signed value (uint -> int for example).
  There is no corresponding database field.
- Source lines(s): the source lines from which the item was extracted. Comments and characters such as TAB, CR are preserved.
  Corresponding database field: source.
- File path: the file path from which the item was extracted, terminated by the line index.
  Corresponding database field: filepath. There are also directory and filename fields. filename is useful to query for values in a given file.
- Score: Database's score value. Items are returned sorted by score.
- Guid formats: a utility columns that proposes all possible guid formats. Only valid for guid types.
  There is no corresponding database field
- Char type: the character encoding (narrow, wide, etc.). Only valid for char and string values.
  Corresponding database field: chartype.
- Storage type: the exact storage type in the database. Only used for specific queries.
  Corresponding database field: valuetype.
- Conditions: the list of preprocessor conditions for a given item. If a condition is surrounded with a REVERSE function, it means the reverse condition of what's surrounded was the condition.
  Corresponding database field: conditions. There may be multiple conditions fields for one item.
Some important points to note:
- If you search for a negative number (like error codes expressed using signed integers), you can surround the search with double quotes, for example searching for "-2147009290" is equivalent to searching for 0x80073CF6, 80073CF6 (or even 3CF6 in this specific case). If you don't surround negative numbers with double quotes, the system will search for signed and unsigned corresponding values.
- The full-text search uses items' name, value, hex value, guid formats, source lines, etc. so refine your search if you get back too many items.
- You can search for guid binary values using just a part of their full definition. For example, if you search for '79eac9c5', it will get you 3 guid entries
- Leading wild card search (*whatever) is allowed, but it may slow down the search significantly.
Here are some example or custom queries:

title:wm_user returns the WM_USER Windows message item, not all items that reference the WM_USER token.

title:wm_u* returns all items (Windows messages probably) whose name starts with WM_U*.

value:1024 AND title:wm_* returns all items (Windows messages probably) whose name starts with WM_U* and value is 1024. Note AND must be UPPERCASE for database to understand it as an AND operator.

value:"00000002-0000-0000-C000-000000000046" returns the IMalloc IID guid value.
Q: I always get back 400 items at most. Why?
A: The MagNumDb site currently limits the number of returned items to this value by design. This should be enough for most real search scenarios (like enums with a big list of values).
Q: Some values are empty. Why?
A: The expression evaluator cannot always compute the final value, because it sometimes require contextual information (custom defines, compiler architecture, etc.) that the parser doesn't have at parsing time. You can enable the Source line(s) column to check what's the corresponding source and try to work it out by yourself. The origin file path and line number is also included.
Q: Can I get all values for a given enum?
A: Sure. For example, __VSHPROPID is the name of an enum, and a query like this: parent:__VSHPROPID will get all the enum's values (66 entries).
Q: I sometimes get back items whose name starts with "__magnumdb__enum_". Why?
A: C allows unnamed enums. The MagNumDb parser just gives them a name, using the defining file name and a counter.
Q: I sometimes get back the same item/name twice or more with different values. For example: TARGET_IS_NT60_OR_LATER. Why?
A: This can be the case with defines. Their value may be different if they were surrounded by # directives (#if, #else, etc.) in the original source code. You can enable the Condition(s) column to check what are the corresponding conditions for a given item.
Note: if a condition is surrounded with a funny REVERSE function token, it means the reverse condition of what's surrounded.
Q: I can't connect from an IP address but from another one, it works. Why?
A: The server is constantly monitored for excessive usage. It's possible your IP address has been banned because massive sets of queries where observed. If you think this is an error, send us an email.

Database Details

Last update date: Monday May 30, 2022
Items count: 368054
Parsed files count: 9521
Windows SDK version: 10.0.22621.0
NetFx SDK version: 4.8
MSVC Tools version: 14.32.31326
KMDF version: 1.33
UMDF version: 2.33

Rest API

There is a JSON version API (you will have to figure out the schema, it's pretty obvious) that you can call here (the search query is the 'q' parameter):

https://www.magnumdb.com/api.aspx?q=0xC000000D&key=you-api-key-goes-here

Note this API also has a 400 items maximum limit and the server is monitored for excessive usage (the key can be removed without notice). If you want to get a key, send us an email.

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Disclaimer

All product names, logos, and brands are property of their respective owners. All company, product and service names used in this website are for identification purposes only.

All values, names, source code fragments displayed here have been extracted from files that are property of their respective owners.

THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND OTHER THAN AS SPECIFICALLY SET FORTH IN THE LICENSE AGREEMENT, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Contact

We welcome feedback.
Seen anything missing? A bug? A wrong value? Do you have any suggestion for improvements? Do you have an idea for a cool new feature?

Please contact us here

About MagNumDB

All product names, logos, and brands are property of their respective owners. All company, product and service names used in this website are for identification purposes only.

All values, names, source code fragments displayed here have been extracted from files that are property of their respective owners.



#define CRED_TARGETNAME_ATTRIBUTE_BATCH_A "batch"
Batch,                // Started via a batch queue
Batch      = 1,
#define CRED_TARGETNAME_ATTRIBUTE_BATCH_W L"batch"
#define CRED_TARGETNAME_ATTRIBUTE_BATCH CRED_TARGETNAME_ATTRIBUTE_BATCH_W
#define CRED_TARGETNAME_ATTRIBUTE_BATCH CRED_TARGETNAME_ATTRIBUTE_BATCH_A
msodcGdiNoBatch = 8,	/* don't batch GDI calls */
	msodcGdiNoBatch = 8,	/* don't batch GDI calls */
enum BluetoothEventTriggeringMode
                {
                    Serial     = 0,
                    Batch      = 1,
                    KeepLatest = 2
                };
#define JET_paramBatchIOBufferMax               22  //  maximum batch I/O buffers in pages
#define SUF_BATCHINF    0x00000004L // Setup using batch file (MSBATCH.INF).
#define BCPBATCH		4	// Sets input batch size
typedef enum _SECURITY_LOGON_TYPE {
    UndefinedLogonType = 0, // This is used to specify an undefied logon type
    Interactive = 2,      // Interactively logged on (locally or remotely)
    Network,              // Accessing system via network
    Batch,                // Started via a batch queue
    Service,              // Service started by service controller
    Proxy,                // Proxy logon
    Unlock,               // Unlock workstation
    NetworkCleartext,     // Network logon with cleartext credentials
    NewCredentials,       // Clone caller, new default credentials
    RemoteInteractive,  // Remote, yet interactive. Terminal server
    CachedInteractive,  // Try cached credentials without hitting the net.
    CachedRemoteInteractive, // Same as RemoteInteractive, this is used internally for auditing purpose
    CachedUnlock        // Cached Unlock workstation
} SECURITY_LOGON_TYPE, *PSECURITY_LOGON_TYPE;
enum
{
	msodcAsserts = 0,	/* asserts enabled */
	msodcAsserts = 0,	/* asserts enabled */
	msodcPushAsserts = 1, /* push asserts enabled */
	msodcPushAsserts = 1, /* push asserts enabled */
	msodcMemoryFill = 2,	/* memory fills enabled */
	msodcMemoryFill = 2,	/* memory fills enabled */
	msodcMemoryFillCheck = 3,	/* check memory fills */
	msodcMemoryFillCheck = 3,	/* check memory fills */
	msodcTrace = 4,	/* trace output */
	msodcTrace = 4,	/* trace output */
	msodcHeap = 5,	/* heap checking */
	msodcHeap = 5,	/* heap checking */
	msodcMemLeakCheck = 6,
	msodcMemTrace = 7,	/* memory allocation trace */
	msodcMemTrace = 7,	/* memory allocation trace */
	msodcGdiNoBatch = 8,	/* don't batch GDI calls */
	msodcGdiNoBatch = 8,	/* don't batch GDI calls */
	msodcShakeMem = 9,	/* shake memory on allocations */
	msodcShakeMem = 9,	/* shake memory on allocations */
	msodcReports = 10,	/* report output enabled */
	msodcReports = 10,	/* report output enabled */
	msodcMsgTrace = 11,	/* WLM message trace - MAC only */
	msodcMsgTrace = 11,	/* WLM message trace - MAC only */
	msodcWlmValidate = 12,	/* WLM parameter validation - MAC only */
	msodcWlmValidate = 12,	/* WLM parameter validation - MAC only */
	msodcGdiNoExcep = 13,  /* Don't call GetObjectType for debug */
	msodcGdiNoExcep = 13,  /* Don't call GetObjectType for debug */
	msodcDisplaySlowTests = 14, /* Do slow (O(n^2) and worse) Drawing debug checks */
	msodcDisplaySlowTests = 14, /* Do slow (O(n^2) and worse) Drawing debug checks */
	msodcDisplayAbortOften = 15, /* Check for aborting redraw really often. */
	msodcDisplayAbortOften = 15, /* Check for aborting redraw really often. */
	msodcDisplayAbortNever = 16, /* Don't abort redraw */
	msodcDisplayAbortNever = 16, /* Don't abort redraw */
	msodcPurgedMaxSmall = 17,
	msodcMarkMemLeakCheck = 18,
	msodcSpare19 = 19, /* USE ME */
	msodcSpare19 = 19, /* USE ME */
	msodcSpare20 = 20, /* USE ME */
	msodcSpare20 = 20, /* USE ME */
	msodcSpare21 = 21, /* USE ME */
	msodcSpare21 = 21, /* USE ME */
	msodcSpare22 = 22, /* USE ME */
	msodcSpare22 = 22, /* USE ME */
	msodcMax = 23,
};

Index	Score	Name	Type	Value	Hex value	Signed value	Guid formats	Char type	Storage type	Source line(s)	File path	Condition(s)
Index	Score	Name	Type	Value	Hex value	Signed value	Guid formats	Char type	Storage type	Source line(s)	File path	Condition(s)
1	6.880398	CRED_TARGETNAME_ATTRIBUTE_BATCH_A	String	batch				Narrow	System.TypedString	#define CRED_TARGETNAME_ATTRIBUTE_BATCH_A "batch"	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\wincred.h(329,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM)
2	6.019094	SECURITY_LOGON_TYPE::Batch	Int32	4	0x00000004	4			System.Int32	Batch, // Started via a batch queue	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\ntlsa.h(142,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) Ifndef _NTLSA_IFS_ If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM)
3	5.897484	BluetoothEventTriggeringMode::Batch	Int32	1	0x00000001	1			System.Int32	Batch = 1,	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\winrt\windows.devices.bluetooth.background.idl(198,0)
4	5.897484	CRED_TARGETNAME_ATTRIBUTE_BATCH_W	String	batch				Wide	System.TypedString	#define CRED_TARGETNAME_ATTRIBUTE_BATCH_W L"batch"	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\wincred.h(328,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM)
5	4.865176	CRED_TARGETNAME_ATTRIBUTE_BATCH	String	batch				Wide	System.TypedString	#define CRED_TARGETNAME_ATTRIBUTE_BATCH CRED_TARGETNAME_ATTRIBUTE_BATCH_W	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\wincred.h(358,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM) Ifdef UNICODE
6	4.865176	CRED_TARGETNAME_ATTRIBUTE_BATCH	String	batch				Narrow	System.TypedString	#define CRED_TARGETNAME_ATTRIBUTE_BATCH CRED_TARGETNAME_ATTRIBUTE_BATCH_A	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\wincred.h(374,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM) REVERSE(Ifdef UNICODE)
7	3.931656	__magnumdb__enum_msodebug_h_4::msodcGdiNoBatch	Int32	8	0x00000008	8			System.Int32	msodcGdiNoBatch = 8, /* don't batch GDI calls / msodcGdiNoBatch = 8, / don't batch GDI calls */	%ProgramFiles%\Microsoft Visual Studio\2022\Professional\VSSDK\VisualStudioIntegration\Common\Inc\office10\msodebug.h(157,0)	If !defined(MSODEBUG_H)
8	3.475126	BluetoothEventTriggeringMode	Enum							enum BluetoothEventTriggeringMode { Serial = 0, Batch = 1, KeepLatest = 2 };	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\winrt\windows.devices.bluetooth.background.idl(195,0)
9	2.780101	JET_paramBatchIOBufferMax	Int32	22	0x00000016	22			System.Int32	#define JET_paramBatchIOBufferMax 22 // maximum batch I/O buffers in pages	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\esent.h(1868,0)	If !defined(_JET_INCLUDED)
10	2.780101	SUF_BATCHINF	Int32	4	0x00000004	4			System.Int32	#define SUF_BATCHINF 0x00000004L // Setup using batch file (MSBATCH.INF).	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\RegStr.h(363,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
11	2.780101	BCPBATCH	Int32	4	0x00000004	4			System.Int32	#define BCPBATCH 4 // Sets input batch size	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\odbcss.h(600,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
12	1.7201	SECURITY_LOGON_TYPE	Enum							typedef enum _SECURITY_LOGON_TYPE { UndefinedLogonType = 0, // This is used to specify an undefied logon type Interactive = 2, // Interactively logged on (locally or remotely) Network, // Accessing system via network Batch, // Started via a batch queue Service, // Service started by service controller Proxy, // Proxy logon Unlock, // Unlock workstation NetworkCleartext, // Network logon with cleartext credentials NewCredentials, // Clone caller, new default credentials RemoteInteractive, // Remote, yet interactive. Terminal server CachedInteractive, // Try cached credentials without hitting the net. CachedRemoteInteractive, // Same as RemoteInteractive, this is used internally for auditing purpose CachedUnlock // Cached Unlock workstation } SECURITY_LOGON_TYPE, *PSECURITY_LOGON_TYPE;	%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.22621.0\um\ntlsa.h(138,0)	If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) Ifndef _NTLSA_IFS_ If (_WIN32_WINNT >= 0x0501) If (_WIN32_WINNT >= 0x0502) If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP \| WINAPI_PARTITION_SYSTEM)
13	0.982914	__magnumdb__enum_msodebug_h_4	Enum							enum { msodcAsserts = 0, /* asserts enabled / msodcAsserts = 0, / asserts enabled / msodcPushAsserts = 1, / push asserts enabled / msodcPushAsserts = 1, / push asserts enabled / msodcMemoryFill = 2, / memory fills enabled / msodcMemoryFill = 2, / memory fills enabled / msodcMemoryFillCheck = 3, / check memory fills / msodcMemoryFillCheck = 3, / check memory fills / msodcTrace = 4, / trace output / msodcTrace = 4, / trace output / msodcHeap = 5, / heap checking / msodcHeap = 5, / heap checking / msodcMemLeakCheck = 6, msodcMemTrace = 7, / memory allocation trace / msodcMemTrace = 7, / memory allocation trace / msodcGdiNoBatch = 8, / don't batch GDI calls / msodcGdiNoBatch = 8, / don't batch GDI calls / msodcShakeMem = 9, / shake memory on allocations / msodcShakeMem = 9, / shake memory on allocations / msodcReports = 10, / report output enabled / msodcReports = 10, / report output enabled / msodcMsgTrace = 11, / WLM message trace - MAC only / msodcMsgTrace = 11, / WLM message trace - MAC only / msodcWlmValidate = 12, / WLM parameter validation - MAC only / msodcWlmValidate = 12, / WLM parameter validation - MAC only / msodcGdiNoExcep = 13, / Don't call GetObjectType for debug / msodcGdiNoExcep = 13, / Don't call GetObjectType for debug / msodcDisplaySlowTests = 14, / Do slow (O(n^2) and worse) Drawing debug checks / msodcDisplaySlowTests = 14, / Do slow (O(n^2) and worse) Drawing debug checks / msodcDisplayAbortOften = 15, / Check for aborting redraw really often. / msodcDisplayAbortOften = 15, / Check for aborting redraw really often. / msodcDisplayAbortNever = 16, / Don't abort redraw / msodcDisplayAbortNever = 16, / Don't abort redraw / msodcPurgedMaxSmall = 17, msodcMarkMemLeakCheck = 18, msodcSpare19 = 19, / USE ME / msodcSpare19 = 19, / USE ME / msodcSpare20 = 20, / USE ME / msodcSpare20 = 20, / USE ME / msodcSpare21 = 21, / USE ME / msodcSpare21 = 21, / USE ME / msodcSpare22 = 22, / USE ME / msodcSpare22 = 22, / USE ME */ msodcMax = 23, };	%ProgramFiles%\Microsoft Visual Studio\2022\Professional\VSSDK\VisualStudioIntegration\Common\Inc\office10\msodebug.h(147,0)	If !defined(MSODEBUG_H)