undefined4 FUN_00406618(FILE *param_1)

{

  bool bVar1;

  int *piVar2;

  char cVar3;

  int iVar4;

  size_t sVar5;

  uint uVar6;

  undefined4 uVar7;

  char *pcVar8;

  iVar4 = fseek(param_1,DAT_00422a6c,0);

  uVar7 = 0xffffffff;

  if (-1 < iVar4) {

    sVar5 = fread(DAT_00422a60,DAT_00422160,1,param_1)   //possible issue identified - semgrep

    piVar2 = DAT_00422a60;

    uVar7 = 0xfffffffe;

    if (sVar5 == 1) {

      uVar7 = 0xfffffffd;

      if ((*DAT_00422a60 == -0x21300313) &&

         (uVar7 = 0xfffffffc, (uint)DAT_00422a60[2] <= DAT_00422160 - 0x10)) {

        iVar4 = DAT_00422a60[3];

        *(undefined1 *)(DAT_00422a60 + 3) = 0;

        uVar6 = 0;

        cVar3 = '\0';

        while( true ) {

          bVar1 = piVar2[2] + 0x10U <= uVar6;

          pcVar8 = (char *)((int)piVar2 + uVar6);

          uVar6 = uVar6 + 1;

          if (bVar1) break;

          cVar3 = cVar3 + *pcVar8;

        }

        *(char *)(piVar2 + 3) = cVar3;

        FUN_00406550("read checksum = 0x%02x\n",(char)iVar4);

        uVar7 = 0xfffffffb;

        if ((char)piVar2[3] == (char)iVar4) {

          uVar7 = 0;

        }

      }

    }

  }

  return uVar7;

}