Printing Structure Question

[georgek01]

Good day,

Kindly assist me with converting these C structures to ASM. I think I may have the first two down, but the last one is above me...

C - PRINTER_NOTIFY_OPTIONS

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typedef struct _PRINTER_NOTIFY_OPTIONS { 
    DWORD  Version;
    DWORD  Flags;
    DWORD  Count;
    PPRINTER_NOTIFY_OPTIONS_TYPE  pTypes;
} PRINTER_NOTIFY_OPTIONS;


ASM - PRINTER_NOTIFY_OPTIONS

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PRINTER_NOTIFY_OPTIONS struct

Version dword ?
Flags dword ?
Count dword ?
pTypes PPRINTER_NOTIFY_OPTIONS_TYPE <> 

PRINTER_NOTIFY_OPTIONS EndS


MSDN says that pTypes above "Points to an array of PRINTER_NOTIFY_OPTIONS_TYPE structures." Did I define this member correctly?

C - PRINTER_NOTIFY_OPTIONS_TYPE

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typedef struct _PRINTER_NOTIFY_OPTIONS_TYPE { 
    WORD   Type;
    WORD   Reserved0;
    DWORD  Reserved1;
    DWORD  Reserved2;
    DWORD  Count;
    PWORD  pFields;
} PRINTER_NOTIFY_OPTIONS_TYPE;


ASM - PRINTER_NOTIFY_OPTIONS_TYPE

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PPRINTER_NOTIFY_OPTIONS_TYPE struct

pType word ?
Reserved0 word ?
Reserved1 dword ?
Reserved2 dword ?
Count dword ?
pFields dword PRINTER_NOTIFY_INFO_DATA dup(<>)

PPRINTER_NOTIFY_OPTIONS_TYPE EndS


MSDN says that pFields above "Points to a 16-bit array of values." Did I define this member correctly?

This one I'm not sure about though.

C - PRINTER_NOTIFY_INFO_DATA

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typedef struct _PRINTER_NOTIFY_INFO_DATA { 
    WORD   Type;
    WORD   Field;
    DWORD  Reserved;
    DWORD  Id;
    union {
        DWORD  adwData[2];
        struct {
            DWORD  cbBuf;
            LPVOID pBuf;
        } Data;
    } NotifyData;
} PRINTER_NOTIFY_INFO_DATA;


ASM - PRINTER_NOTIFY_INFO_DATA

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PRINTER_NOTIFY_INFO_DATA struct
pType word ?
Field word ?
Reserved dword ?
Id dword ?
union
awdData dword 2 dup (?)
struct
cbBuf dword ?
pBuf dword ?
ends
ends
PRINTER_NOTIFY_INFO_DATA EndS


Your assistance will be greatly appreciated!

[drizz]

http://www.japheth.de/h2incX.html

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;--- include file created by h2incx v0.99.19 (copyright 2005-2006 japheth)

PRINTER_NOTIFY_OPTIONS struct
Version DWORD ?
Flags DWORD ?
Count DWORD ?
pTypes PPRINTER_NOTIFY_OPTIONS_TYPE ?
PRINTER_NOTIFY_OPTIONS ends

PRINTER_NOTIFY_OPTIONS_TYPE struct
Type_ WORD ?
Reserved0 WORD ?
Reserved1 DWORD ?
Reserved2 DWORD ?
Count DWORD ?
pFields PWORD ?
PRINTER_NOTIFY_OPTIONS_TYPE ends

PRINTER_NOTIFY_INFO_DATA struct
Type_ WORD ?
Field WORD ?
Reserved DWORD ?
Id DWORD ?
union NotifyData
adwData DWORD 2 dup (?)
struct Data
cbBuf DWORD ?
pBuf LPVOID ?
ends
ends
PRINTER_NOTIFY_INFO_DATA ends


;--- errors: 0
;--- end of file ---


[georgek01]

drizz, thank you!!

My code now works fine, but how do I access the Data strcuture in PRINTER_NOTIFY_INFO_DATA?

I access the print job ID successfully, but how do I get the job name (that's in the Data array)?

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mov eax,pointer

assume eax: PTR PRINTER_NOTIFY_INFO

mov ecx,[eax].aData.Id ; print job ID

invoke wsprintf,addr szBuffer,addr szNum,ecx
invoke InsertListItem,hList,addr szBuffer,0,0,0,0

assume eax:nothing



[drizz]

My advice to you would be to stop using masm32 includes and start using win32inc.

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.686
.model flat,c
option casemap:none
include WINDOWS.INC ;; www.japheth.de/WinInc.html
include WINSPOOL.INC

.code
main proc argc,argv

assume esi:PPRINTER_NOTIFY_INFO, edi:PPRINTER_NOTIFY_INFO_DATA
xor ebx,ebx
lea edi,[esi].aData; or [esi].aData[ebx*sizeof PRINTER_NOTIFY_INFO_DATA]

.while ebx < [esi].Count

; id
mov edx,[edi].Id

; buffer and length
mov ecx,[edi].NotifyData.Data.cbBuf
mov eax,[edi].NotifyData.Data.pBuf

add edi, sizeof PRINTER_NOTIFY_INFO_DATA

inc ebx
.endw
assume esi:nothing, edi:nothing
ret
main endp

end



[georgek01]

drizz, thank you! My printer monitor is up and running and I can now report on print jobs going through the server.

The only problem I now have is that SAP print jobs does not for some reason report on the number of pages printed. Any reason why that is?

I use the following to get the number of pages for the print jobs. All types of documents works fine except for SAP related...

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.elseif field == JOB_NOTIFY_FIELD_TOTAL_PAGES

mov eax,[edi].NotifyData.adwData[0]
.if eax != 0
invoke wsprintf,addr szBuffer,addr szNum,eax
invoke InsertListSubItem,hList,addr szBuffer,item,6
invoke InsertListSubItem,hList,addr szYes,item,7
.else
mov eax,[edi].NotifyData.adwData[1]
.if eax != 0
invoke wsprintf,addr szBuffer,addr szNum,eax
invoke InsertListSubItem,hList,addr szBuffer,item,6
invoke InsertListSubItem,hList,addr szYes,item,7
.else
invoke wsprintf,addr szBuffer,addr szNum,eax
invoke InsertListSubItem,hList,addr szBuffer,item,6
invoke InsertListSubItem,hList,addr szNo,item,7
.endif
.endif


[drizz]

Always remember that square brackets in asm DO NOT have the same meaning as [] in high level languages.

[anything inside evaluates to BYTE OFFSET]

mov eax,[edi].NotifyData.adwData[1]  ; This does not access the second dword but adwData+1 BYTE OFFSET

correct (choose one):
mov eax,[edi].NotifyData.adwData[1*DWORD]
mov ecx,[edi].NotifyData.adwData[1*SIZEOF DWORD]
mov ecx,[edi].NotifyData.adwData[1*TYPE [edi].NotifyData.adwData]


That's the only error I can find...

[georgek01]

drizz for President!  :U