How does it work?

MagNumDB is a database that contains about 350,000 items. These items are constants, names, values all extracted from more than 6,000 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).

 Powered by

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.

 Database Metrics

  • Last update date: Thursday May 13, 2020
  • Items count: 340878
  • Parsed files count: 8447
  • Windows SDK version: 10.0.19041.0
  • NetFx SDK version: 4.8
  • MSVC Tools version: 14.25.28610

 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.

 

 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

MagNumDB  2017-2021 Simon Mourier V1.3.2. All rights reserved.

Profile for Simon Mourier at Stack Overflow, Q&A for professional and enthusiast programmers


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.

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 5.185095 DOMAIN_USER_RID_DEFAULT_ACCOUNT Int32 503 0x000001F7 503 System.Int32
#define DOMAIN_USER_RID_DEFAULT_ACCOUNT      (0x000001F7L)
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\winnt.h(9409,0)
2 5.185095 SHARE_SERVER_PARMNUM Int32 503 0x000001F7 503 System.Int32
#define SHARE_SERVER_PARMNUM        503
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\lmshare.h(314,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM)
3 5.185095 SV_OPENSEARCH_PARMNUM Int32 503 0x000001F7 503 System.Int32
#define SV_OPENSEARCH_PARMNUM               503
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\lmserver.h(1174,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM)
4 5.185095 HttpStatusCode::ServiceUnavailable Int32 503 0x000001F7 503 System.Int32
ServiceUnavailable            = 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\winrt\windows.web.http.idl(356,0)
5 5.185095 __x_ABI_CWindows_CUI_CXaml_CCore_CDirect_CXamlPropertyIndex::XamlPropertyIndex_Border_Background Int32 503 0x000001F7 503 System.Int32
XamlPropertyIndex_Border_Background = 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\winrt\windows.ui.xaml.core.direct.h(3411,0)
  • REVERSE(If defined(__cplusplus) && !defined(CINTERFACE))
  • If WINDOWS_UI_XAML_CORE_DIRECT_XAMLDIRECTCONTRACT_VERSION >= 0x10000
6 5.185095 XamlPropertyIndex::Border_Background Int32 503 0x000001F7 503 System.Int32
Border_Background                                                     = 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\winrt\windows.ui.xaml.core.direct.idl(644,0)
7 5.185095 DBVARENUM::DBTYPE_DBEXPR Int32 503 0x000001F7 503 System.Int32
DBTYPE_DBEXPR = 503,
%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.25.28610\atlmfc\include\ocdb.h(129,0)
  • Ifndef __OCDB_H_
  • Ifdef OLD_DEFS
8 5.185095 MM_MOTU_MXN_MIDIIN_3 Int32 503 0x000001F7 503 System.Int32
#define  MM_MOTU_MXN_MIDIIN_3               503
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\shared\mmreg.h(1222,0)
  • If !defined(__midl)
  • Ifndef _INC_MMREG
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • Ifndef NOMMIDS
9 5.185095 MM_MOTU_MXN_MIDIOUT_3 Int32 503 0x000001F7 503 System.Int32
#define  MM_MOTU_MXN_MIDIOUT_3              503
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\shared\mmreg.h(1223,0)
  • If !defined(__midl)
  • Ifndef _INC_MMREG
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • Ifndef NOMMIDS
10 5.185095 JPOS_FUKUSHI_NANO Int32 503 0x000001F7 503 System.Int32
#define JPOS_FUKUSHI_NANO       503
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\msime.h(583,0)
  • If (NTDDI_VERSION >= NTDDI_WIN8)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
11 5.185095 __x_ABI_CWindows_CWeb_CWebErrorStatus::WebErrorStatus_ServiceUnavailable Int32 503 0x000001F7 503 System.Int32
WebErrorStatus_ServiceUnavailable = 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\winrt\Windows.Web.h(628,0)
  • REVERSE(If defined(__cplusplus) && !defined(CINTERFACE))
  • If WINDOWS_FOUNDATION_UNIVERSALAPICONTRACT_VERSION >= 0x10000
12 5.185095 __x_ABI_CWindows_CWeb_CHttp_CHttpStatusCode::HttpStatusCode_ServiceUnavailable Int32 503 0x000001F7 503 System.Int32
HttpStatusCode_ServiceUnavailable = 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\winrt\Windows.Web.Http.h(8733,0)
  • REVERSE(If defined(__cplusplus) && !defined(CINTERFACE))
  • If WINDOWS_FOUNDATION_UNIVERSALAPICONTRACT_VERSION >= 0x10000
13 5.185095 __MIDL___MIDL_itf_mfobjects_0000_0012_0001::MEWMDRMLicenseRestoreProgress Int32 503 0x000001F7 503 System.Int32
MEWMDRMLicenseRestoreProgress	= 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\mfobjects.h(3734,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP | WINAPI_PARTITION_GAMES)
14 5.185095 IDG_VS_CTXT_BW1 Int32 503 0x000001F7 503 System.Int32
#define IDG_VS_CTXT_BW1             0x01F7
%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Professional\VSSDK\VisualStudioIntegration\Common\Inc\vsshlids.h(1289,0)
15 5.185095 CV_HREG_e::CV_AMD64_YMM0F7 Int32 503 0x000001F7 503 System.Int32
CV_AMD64_YMM0F7    =  503,
%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Professional\DIA SDK\include\cvconst.h(3645,0)
16 4.942018 CTRY_EL_SALVADOR Int32 503 0x000001F7 503 System.Int32
#define CTRY_EL_SALVADOR          503         // El Salvador
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\winnls.h(441,0)
  • Ifndef NONLS
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP | WINAPI_PARTITION_SYSTEM | WINAPI_PARTITION_GAMES)
17 4.942018 LINE_CREATEDIALOGINSTANCE Int32 503 0x000001F7 503 System.Int32
#define LINE_CREATEDIALOGINSTANCE               ((long) TSPI_MESSAGE_BASE + 3)
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\TSPI.h(197,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • If (TAPI_CURRENT_VERSION >= 0x00020000)
18 4.942018 TSPI_LINEBLINDTRANSFER Int32 503 0x000001F7 503 System.Int32
#define TSPI_LINEBLINDTRANSFER              (TSPI_PROC_BASE + 3)
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\TSPI.h(1600,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • If (TAPI_CURRENT_VERSION < 0x00020000)
19 4.942018 HTTP_STATUS_SERVICE_UNAVAIL Int32 503 0x000001F7 503 System.Int32
#define HTTP_STATUS_SERVICE_UNAVAIL     503 // temporarily overloaded
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\winhttp.h(1062,0)
  • If !defined(_WINHTTPX_)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM | WINAPI_PARTITION_GAMES)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • If !defined(_WININET_)
20 4.942018 DISPID_IPRINTMANAGERTEMPLATEPRINTER_SETPAGECOUNT Int32 503 0x000001F7 503 System.Int32
#define DISPID_IPRINTMANAGERTEMPLATEPRINTER_SETPAGECOUNT          DISPID_PRINTMANAGER_TEMPLATE_PRINTER+2
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\MsHtmdid.h(7304,0)
21 4.942018 IDC_PS_PASTELIST Int32 503 0x000001F7 503 System.Int32
#define IDC_PS_PASTELIST                503     //{{NOHELP}}
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\OleDlg.h(97,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
22 4.942018 CloudRefresh Int32 503 0x000001F7 503 System.Int32
static const int CloudRefresh = 503;
%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Professional\VSSDK\VisualStudioIntegration\Common\Inc\KnownImageIds.h(574,0)
23 4.455863 IDS_CAP_STAT_CAP_FINI Int32 503 0x000001F7 503 System.Int32
#define IDS_CAP_STAT_CAP_FINI       503  /* "Finished capture, now writing frame %ld" */
#define IDS_CAP_STAT_CAP_FINI       503  /* "Finished capture, now writing frame %ld" */
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\Vfw.h(3744,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
  • Ifndef NOAVICAP
24 1.863315 DISPID_BORDERCOLOR Int32 -503 0xFFFFFE09 -503 System.Int32
#define DISPID_BORDERCOLOR              (-503)
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\olectl.h(483,0)
25 1.863315 JET_errNoBackupDirectory Int32 -503 0xFFFFFE09 -503 System.Int32
#define JET_errNoBackupDirectory            -503  /* No backup directory given */
#define JET_errNoBackupDirectory            -503  /* No backup directory given */
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.19041.0\um\esent.h(3108,0)
  • If !defined(_JET_INCLUDED)
26 1.863315 __VSSYSCOLOREX3::VSCOLOR_VIZSURFACE_STRONGBLUE_DARK Int32 -503 0xFFFFFE09 -503 System.Int32
VSCOLOR_VIZSURFACE_STRONGBLUE_DARK	= -503,
%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Professional\VSSDK\VisualStudioIntegration\Common\Inc\vsshell100.h(1932,0)
27 1.863315 RILIMSSIPCAUSECODE::RIL_IMSSIPCAUSE_SERVICE_UNAVAILABLE 503 0x000001F7 503 System.String
RIL_IMSSIPCAUSE_SERVICE_UNAVAILABLE	= 503,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.17763.0\um\RilAPITypes.h(1309,0)
28 1.863315 D3D12_MESSAGE_ID::D3D12_MESSAGE_ID_CHECKMULTISAMPLEQUALITYLEVELS_INVALIDFLAGS 503 0x000001F7 503 System.String
D3D12_MESSAGE_ID_CHECKMULTISAMPLEQUALITYLEVELS_INVALIDFLAGS	= ( D3D12_MESSAGE_ID_TILE_MAPPINGS_SHARED_BETWEEN_INPUT_AND_OUTPUT + 1 ) ,
%ProgramFiles(x86)%\Windows Kits\10\Include\10.0.17763.0\um\d3d12sdklayers.h(2018,0)
  • If WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
29 0.698743 PKEY_LayoutPattern_TilesViewMode PropertyKey {c9944a21-a406-48fe-8225-aec7e24c211b} 503 System.PropertyKey

                            
%ProgramFiles(x86)%\Windows Kits\10\Lib\10.0.19041.0\um\x86\uuid.lib
30 0.641293 AE_COMPATIBILITY_MSI_OS Guid 000001f7-0004-0000-0002-000000000000 N: 000001f7000400000002000000000000
B: {000001f7-0004-0000-0002-000000000000}
P: (000001f7-0004-0000-0002-000000000000)
X: {0x000001f7,0x0004,0x0000,{0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00}}
A: F7010000040000000002000000000000
System.Guid
static GUID AE_COMPATIBILITY_MSI_OS = {0x000001f7,0x0004,0x0000,{0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00}};
Undocumented\undocguids.h(1076,0)
31 0.641293 IID_IInterfaceInfo Guid 000001f7-0000-0000-c000-000000000046 N: 000001f700000000c000000000000046
B: {000001f7-0000-0000-c000-000000000046}
P: (000001f7-0000-0000-c000-000000000046)
X: {0x000001f7,0x0000,0x0000,{0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}}
A: F701000000000000C000000000000046
System.Guid
static GUID IID_IInterfaceInfo = {0x000001f7,0x0000,0x0000,{0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}};
Undocumented\undocguids.h(2544,0)
32 0.641293 EmptyTab_Conversion_Cancel Guid 000001f7-0004-01d8-0001-000000000000 N: 000001f7000401d80001000000000000
B: {000001f7-0004-01d8-0001-000000000000}
P: (000001f7-0004-01d8-0001-000000000000)
X: {0x000001f7,0x0004,0x01d8,{0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00}}
A: F70100000400D8010001000000000000
System.Guid
static GUID EmptyTab_Conversion_Cancel = {0x000001f7,0x0004,0x01d8,{0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00}};
Undocumented\undocguids.h(13840,0)
33 0.641293 MSHTML_COMPOSITION_TRIM_SBLAYER Guid 000001f7-0000-012c-0000-001000000000 N: 000001f70000012c0000001000000000
B: {000001f7-0000-012c-0000-001000000000}
P: (000001f7-0000-012c-0000-001000000000)
X: {0x000001f7,0x0000,0x012c,{0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00}}
A: F701000000002C010000001000000000
System.Guid
static GUID MSHTML_COMPOSITION_TRIM_SBLAYER = {0x000001f7,0x0000,0x012c,{0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00}};
Undocumented\undocguids.h(52749,0)