Set or clear chat input text

monday · Aug 22, 2019

Hi, does anyone know of a simple way to do that?

Parazitas · Aug 22, 2019

I tried find pointer of this a lot times , but not successfully.
Idk how many params should be called to samp.dll - same as this one:

PHP:

:SET_CHAT_INPUT_ENABLED
{
    0.3.DL
    0AB1: @SET_CHAT_INPUT_ENABLED 1 STATUS 0 // 1 = ENABLED , 0 = DISABLED
}
IF 0AA2: 10@ = "samp.dll"
THEN
    0A8E: 11@ = 10@ + 0x2ACA14 // SAMP_CHAT_INPUT_INFO_OFFSET
    0A8D: 12@ = readMem 11@ sz 4 vp 0
    0A8E: 11@ = 10@ + 0xA0530 //SAMP_CHAT_INPUT_CLOSE
    0AA8: call_function_method 11@ struct 12@ num_params 2 pop 0 0@ retn_val 1@
END
0AB2: 0

@springfield I think you have much more experience to do that.

monday · Aug 23, 2019

I tried to find it too, here's the "CInput->ProcessInput()" function peudocode (0.3.7 R1 samp version):

C++:

void __fastcall CInput->ProcessInput_10065d30(int iParm1)

{
  char cVar1;
  undefined4 uVar2;
  code *pcVar3;
  char *pcVar4;
  char *pcVar5;
  char local_84 [132];
  char *szInputBuffer;
  char *2ndCharPointer;
  
  if (*(int *)(iParm1 + 8) == 0) {
    return;
  }
                    /* 0x14e4 = CInput->szInputBuffer[129] */
  szInputBuffer = (char *)(iParm1 + 0x14e4);
  uVar2 = FUN_10081030(0x80);
  FUN_100b6090(szInputBuffer,uVar2);
                    /* 0x1564 = last char of CInput->szInputBuffer[129] */
  *(undefined *)(iParm1 + 0x1564) = 0;
  2ndCharPointer = szInputBuffer;
  do {
    cVar1 = *2ndCharPointer;
    2ndCharPointer = 2ndCharPointer + 1;
  } while (cVar1 != '\0');
                    /* 0x14e4 = CInput->szInputBuffer[129]
                       so it's 2nd character */
  if (2ndCharPointer == (char *)(iParm1 + 0x14e5)) goto LAB_10065e74;
  CInput->AddRecall_10065930(szInputBuffer);
                    /* 0x1af0 = CInput->iCurrentRecall */
  *(undefined4 *)(iParm1 + 0x1af0) = 0xffffffff;
  if (*szInputBuffer != '/') {
                    /* 0x1af8 = CMDPROC CInput->pszDefaultCMD */
    if (*(code **)(iParm1 + 0x1af8) != (code *)0x0) {
      (**(code **)(iParm1 + 0x1af8))(szInputBuffer);
    }
    goto LAB_10065e62;
  }
                    /* 0x14e4 = CInput->szInputBuffer[129]
                       so it's 2nd character */
  2ndCharPointer = (char *)(iParm1 + 0x14e5);
  pcVar5 = 2ndCharPointer;
  if (*2ndCharPointer == '\0') {
LAB_10065dd4:
    pcVar3 = (code *)CInput->GetCommandHandler_10065a70(2ndCharPointer);
    if (pcVar3 == (code *)0x0) {
      if (DAT_1021a0f8 == 0) goto LAB_10065e58;
      SendCommandToServer_10065c60(szInputBuffer);
    }
    else {
      (*pcVar3)(&DAT_100d39c5);
    }
  }
  else {
    do {
      if (*pcVar5 == ' ') break;
      pcVar4 = pcVar5 + 1;
      pcVar5 = pcVar5 + 1;
    } while (*pcVar4 != '\0');
    if (*pcVar5 == '\0') goto LAB_10065dd4;
    pcVar4 = szInputBuffer;
    do {
      cVar1 = *pcVar4;
      pcVar4[(int)(local_84 + -(int)szInputBuffer)] = cVar1;
      pcVar4 = pcVar4 + 1;
    } while (cVar1 != '\0');
    *pcVar5 = '\0';
    pcVar3 = (code *)CInput->GetCommandHandler_10065a70(2ndCharPointer);
    if (pcVar3 == (code *)0x0) {
      if (DAT_1021a0f8 != 0) {
        SendCommandToServer_10065c60(local_84);
        goto LAB_10065e62;
      }
LAB_10065e58:
      FUN_10064520(DAT_1021a0e4,"I don\'t know that command.");
    }
    else {
      (*pcVar3)(pcVar5 + 1);
    }
  }
LAB_10065e62:
  *szInputBuffer = '\0';
  FUN_10080f60(&DAT_100d39c5,0);
LAB_10065e74:
                    /* 0x14e0 = CInput->iInputEnabled */
  if (*(int *)(iParm1 + 0x14e0) != 0) {
    if (DAT_1021a0e4 != 0) {
      CChat->ScrollToBottom_100637c0();
    }
    CInput->Close_100658e0();
  }
  return;
}

I found out that nop'ing samp+0x80f60 function results in the chat input box not being cleared (despite processing the command/text itself), so I assume it has something to do with it. I noticed the same behaviour when noping the first function that is called within 0x80f60:

Code:

        10080f6b 50              PUSH       EAX
        10080f6c 8b cf           MOV        ECX,EDI
        10080f6e e8 bd 69        CALL       FUN_10097930                                 
                 01 00

But I didn't have much luck trying to call 0x80f60 "remotely"...

Edit: It certainly looks like some kind of "cleanup" function for the input box:

C++:

void __thiscall FUN_10080f60(int iParm1,undefined4 param_1)

{
  undefined4 uVar1;
 
  FUN_10097930(param_1);
                    /* 0x122 = CInput->szInputBox->horizontalScrollOffset (a.k.a. how many
                       characters are hidden on the left side) */
  *(undefined4 *)(iParm1 + 0x122) = 0;
  uVar1 = (*(code *)0xeacf4)(*(undefined4 *)(iParm1 + 0x4d));
  FUN_10080e50(uVar1);
  if ((char)param_1 != '\0') {
                    /* Set cursor pos to the begining */
    *(undefined4 *)(iParm1 + 0x11e) = 0;
    return;
  }
                    /* 0x119 = CInput->stInputBox->markedTextEndOffset */
                    /* 0x11e = CInput->szInputBox->textCursorPos */
  *(undefined4 *)(iParm1 + 0x11e) = *(undefined4 *)(iParm1 + 0x119);
  return;
}

Parazitas · Aug 23, 2019

Do you know chat input editbox offset?

monday · Aug 23, 2019

it's there:
https://github.com/BlastHackNet/mod_s0beit_sa-1/blob/master/src/samp.h
SAMP_CHAT_INPUT_INFO_OFFSET + 8 = stInputBox

Btw I found it

It is stored as "wide string" so each character has 2 bytes (and it ends with 2 zero bytes as far as I know). Changing the values at that address actually affect the input box text

Parazitas · Aug 23, 2019

Soon you will be pro 100% xD

Parazitas · Aug 23, 2019

monday said:
it's there:
https://github.com/BlastHackNet/mod_s0beit_sa-1/blob/master/src/samp.h
SAMP_CHAT_INPUT_INFO_OFFSET + 8 = stInputBox

I can't find it

monday · Aug 23, 2019

do you have 0.3.7 R1 version?

Parazitas · Aug 23, 2019

monday said:
do you have 0.3.7 R1 version?

I mean where you see +8 offset

monday · Aug 23, 2019

C++:

struct stInputInfo {     
    void                *pD3DDevice;     // stInputInfo  + 0
    void                *pDXUTDialog;     // stInputInfo  + 4
    stInputBox            *pDXUTEditBox; // stInputInfo + 8

springfield · Aug 23, 2019

In the same way as this ; http://ugbase.eu/index.php?threads/dll-call.20643/#post-120459
0x80F60 is CDXUTEditBox::SetText (0.3.7 R1), call it like this

C++:

((void(__thiscall *)(void*, const char*, bool))samp.dll+0x80F60)(CInput->szInputBox, "hello", false);

Use the function, since it's a dynamic buffer, so writing in the buffer without updating the 'size' member, or trying to free/allocate memory(to expand string) from another heap might result in errors.

Parazitas · Aug 23, 2019

Ty..., thx.

PHP:

:SetChatInputEditBoxText
{
0AB1: @SetChatInputEditBoxText 2 => text 0@ selected 0
}
if 0AA2: 2@ = "samp.dll"
then
    0A8E: 3@ = 2@ + 0x21A0E8            // SAMP_CHAT_INPUT_INFO_OFFSET (R1)
    0A8D: 3@ = readMem 3@ sz 4 vp 0     // pChatInput;
    0A8E: 4@ = 3@ + 0x8                // pChatInput->pEditBox;
    0A8D: 4@ = readMem 4@ sz 4 vp 0     // pEditBox;
   
    0A8E: 5@ = 2@ + 0x80F60 // CDXUTEditBox::SetText (offset for 0.3.7 R1)
   
    // CDXUTEditBox::SetText takes 2 params
    // 1 - pointer to zero terminated string
    // 2 - bool, if text is to be selected or not
   
    0AA8: call_function_method 5@ struct 4@ num_params 2 pop 0 _bSelected 1@ _pszText 0@ _retVal 6@
end
0AB2: 0

Parazitas · Aug 23, 2019

monday said:

C++:

struct stInputInfo {   
    void                *pD3DDevice;     // stInputInfo  + 0
    void                *pDXUTDialog;     // stInputInfo  + 4
    stInputBox            *pDXUTEditBox; // stInputInfo + 8

Please explain it.

IF every second need add +4 , so how dialog editbox have 24 offset?
Because if i add every time +4 it should be 36 offset.
I trying understand.

C++:

struct stDialogInfo
{
    IDirect3DDevice9    *m_pD3DDevice;      //  + 0
    int    iTextPoxX;     //  + 4
    int    iTextPoxY;     // + 8
    uint32_t    uiDialogSizeX;     // + 12
    uint32_t    uiDialogSizeY;     // + 16
    int    iBtnOffsetX;     // + 20
    int    iBtnOffsetY;     // + 24
    class _CDXUTDialog                        *pDialog;     // + 28
    class _CDXUTListBox                        *pList;     // + 32
    class _CDXUTIMEEditBox                        *pEditBox;     // + 36
    int    iIsActive;
    int    iType;
    uint32_t    DialogID;
    char        *pText;
    uint32_t    uiTextWidth;
    uint32_t    uiTextHeight;
    char        szCaption[65];
    int        bServerside;
};

monday · Aug 23, 2019

36 equals 0x24 in hexadecimal so maybe that's the source of confusion

@springfield
Thanks a lot

Parazitas · Aug 23, 2019

monday said:
36 equals 0x24 in hexadecimal so maybe that's the source of confusion

@springfield
Thanks a lot

Oh that make sense.
Thanks a lot guys.

Parazitas · Aug 23, 2019

ETC.
@springfield
@monday

I made and tested this snippet - working , but also i get one error , maybe you know why?

PHP:

:SET_CHAT_INPUT_ENABLED
{
    0.3.7 - R1
    0AB1: @SET_CHAT_INPUT_ENABLED 1 Status 0 // 1 = Enable, 0 = Disable
}
IF 0AA2: 10@ = "samp.dll"
THEN
    0A8E: 11@ = 10@ + 0x21A0E8 // SAMP_CHAT_INPUT_INFO_OFFSET
    0A8D: 12@ = readMem 11@ sz 4 vp 0
    0A8E: 11@ = 10@ + 0x657E0 //SAMP_CHAT_INPUT_CLOSE
    0AA8: call_function_method 11@ struct 12@ num_params 1 pop 0 _Status 0@ _retVal 6@
END
0AB2: 0

Edit solved.:

PHP:

:SET_CHAT_INPUT_ENABLED
{
    0.3.7 - R1
    0AB1: @SET_CHAT_INPUT_ENABLED 1 Status 0 // 1 = Enable, 0 = Disable
}
IF 0AA2: 10@ = "samp.dll"
THEN
    0A8E: 11@ = 10@ + 0x21A0E8 // SAMP_CHAT_INPUT_INFO_OFFSET
    0A8D: 12@ = readMem 11@ sz 4 vp 0
    if
    0@ == 1
    then
        0A8E: 11@ = 10@ + 0x657E0 //SAMP_CHAT_INPUT_OPEN
    else
        0A8E: 11@ = 10@ + 0x658E0 //SAMP_CHAT_INPUT_CLOSE
    end
    0AA8: call_function_method 11@ struct 12@ num_params 0 pop 0 _retVal 6@
END
0AB2: 0

Parazitas · Aug 24, 2019

I just saw now , but looks like - Dialog editbox and chat inputbox set text pointers are same.
So i tested and works perfect.

Set or clear chat input text

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