/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x1400fac80 FUN_1400fac80
 * Pseudocode, not original source. */

undefined8 FUN_1400fac80(longlong *param_1,void *param_2,uint param_3)

{
  undefined8 uVar1;
  uint uVar2;
  
  if (((param_1 != (longlong *)0x0) && (param_2 != (void *)0x0)) &&
     (*(uint *)((longlong)param_1 + 0x1c) < 0x41)) {
    while( true ) {
      while( true ) {
        if (param_3 == 0) {
          return 0;
        }
        if ((*(int *)((longlong)param_1 + 0x1c) == 0) && (0x3f < param_3)) break;
        uVar2 = 0x40 - *(int *)((longlong)param_1 + 0x1c);
        if (param_3 < uVar2) {
          uVar2 = param_3;
        }
        memcpy((void *)((ulonglong)*(uint *)((longlong)param_1 + 0x1c) + 0x20 + (longlong)param_1),
               param_2,(ulonglong)uVar2);
        *(int *)((longlong)param_1 + 0x1c) = *(int *)((longlong)param_1 + 0x1c) + uVar2;
        param_2 = (void *)((longlong)param_2 + (ulonglong)uVar2);
        param_3 = param_3 - uVar2;
        if (*(int *)((longlong)param_1 + 0x1c) == 0x40) {
          uVar1 = FUN_1400fa770((longlong)param_1,(longlong)(param_1 + 4));
          if ((int)uVar1 != 0) {
            return uVar1;
          }
          *param_1 = *param_1 + 0x200;
          *(undefined4 *)((longlong)param_1 + 0x1c) = 0;
        }
      }
      uVar1 = FUN_1400fa770((longlong)param_1,(longlong)param_2);
      if ((int)uVar1 != 0) break;
      *param_1 = *param_1 + 0x200;
      param_2 = (void *)((longlong)param_2 + 0x40);
      param_3 = param_3 - 0x40;
    }
    return uVar1;
  }
  return 0x10;
}