/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x1400bc6c0 FUN_1400bc6c0
 * Pseudocode, not original source. */

longlong FUN_1400bc6c0(int *param_1,undefined8 *param_2,undefined8 param_3,undefined8 param_4)

{
  uint uVar1;
  longlong lVar2;
  undefined8 uVar3;
  uint uVar4;
  int iVar5;
  uint uVar6;
  exception local_58 [80];
  ulonglong uVar7;
  
  lVar2 = *(longlong *)(param_1 + 2);
  iVar5 = (int)param_3;
  if ((lVar2 == 0) && (*(longlong *)(param_1 + 4) == 0)) {
    FUN_14006ba50(local_58,L"Cannot read from Null pointer message!",param_3,param_4);
                    /* WARNING: Subroutine does not return */
    _CxxThrowException(local_58,(ThrowInfo *)&DAT_1401a93e8);
  }
  uVar4 = *param_1 >> 0x1f & 7;
  uVar1 = *param_1 + uVar4;
  uVar6 = (int)uVar1 >> 3;
  uVar7 = (ulonglong)uVar6;
  if ((uVar1 & 7) != uVar4) {
    FUN_14006ba50(local_58,L"Read offset is not byte aligned!",param_3,uVar7);
                    /* WARNING: Subroutine does not return */
    _CxxThrowException(local_58,(ThrowInfo *)&DAT_1401a93e8);
  }
  if (lVar2 == 0) {
    if (*(longlong *)(param_1 + 4) == 0) {
                    /* WARNING: Subroutine does not return */
      FUN_1400d1900(0,(ulonglong)uVar4,param_3,uVar7);
    }
    uVar1 = param_1[6];
  }
  else {
    uVar1 = *(uint *)(lVar2 + 0x18);
  }
  if ((int)uVar1 < (int)(uVar6 + iVar5)) {
    return (ulonglong)(uint3)(uVar6 + iVar5 >> 8) << 8;
  }
  if (*(longlong *)(param_1 + 4) == 0) {
    if (lVar2 == 0) {
                    /* WARNING: Subroutine does not return */
      FUN_1400d1900(0,(ulonglong)uVar1,param_3,uVar7);
    }
    if (*(int *)(lVar2 + 0x18) == 0) {
      lVar2 = 0;
    }
    else {
      lVar2 = *(longlong *)(lVar2 + 0x10);
    }
  }
  else {
    lVar2 = *(longlong *)(param_1 + 4);
    if (lVar2 == 0) {
      FUN_14006ba50(local_58,(wchar_t *)PTR_u_ArrayWithExternalBuffer_is_unini_1401ad9a0,param_3,
                    uVar7);
                    /* WARNING: Subroutine does not return */
      _CxxThrowException(local_58,(ThrowInfo *)&DAT_1401a93e8);
    }
  }
  uVar3 = FUN_140006500(param_2,(undefined8 *)((int)uVar6 + lVar2),(longlong)iVar5);
  *param_1 = *param_1 + iVar5 * 8;
  return CONCAT71((int7)((ulonglong)uVar3 >> 8),1);
}