/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x140002c70 FUN_140002c70
 * Pseudocode, not original source. */

longlong * FUN_140002c70(longlong *param_1,undefined8 *param_2,ulonglong param_3,ulonglong param_4)

{
  code *pcVar1;
  char cVar2;
  longlong *plVar3;
  ulonglong uVar4;
  
  if ((ulonglong)param_2[2] < param_3) {
    std::_Xout_of_range("invalid string position");
    pcVar1 = (code *)swi(3);
    plVar3 = (longlong *)(*pcVar1)();
    return plVar3;
  }
  uVar4 = param_2[2] - param_3;
  if (uVar4 < param_4) {
    param_4 = uVar4;
  }
  if (param_4 < -param_1[2] - 1U) {
    if (param_4 != 0) {
      uVar4 = param_1[2] + param_4;
      cVar2 = FUN_1400019c0(param_1,uVar4);
      if (cVar2 != '\0') {
        if (7 < (ulonglong)param_2[3]) {
          param_2 = (undefined8 *)*param_2;
        }
        plVar3 = param_1;
        if (7 < (ulonglong)param_1[3]) {
          plVar3 = (longlong *)*param_1;
        }
        memcpy((void *)((longlong)plVar3 + param_1[2] * 2),(void *)((longlong)param_2 + param_3 * 2)
               ,param_4 * 2);
        param_1[2] = uVar4;
        plVar3 = param_1;
        if (7 < (ulonglong)param_1[3]) {
          plVar3 = (longlong *)*param_1;
        }
        *(undefined2 *)((longlong)plVar3 + uVar4 * 2) = 0;
      }
    }
    return param_1;
  }
  std::_Xlength_error("string too long");
  pcVar1 = (code *)swi(3);
  plVar3 = (longlong *)(*pcVar1)();
  return plVar3;
}