/* WARNING: Globals starting with '_' overlap smaller symbols at the same address */

undefined4 FUN_0040e430(int param_1,byte *param_2,undefined4 param_3,undefined4 param_4)

{

  undefined4 uVar1;

  uint uVar2;

  size_t sVar3;

  byte *pbVar4;

  int iVar5;

  uint uVar6;

  byte *pbVar7;

  byte *pbVar8;

  byte *local_240;

  int local_23c;

  char *local_238;

  char local_234 [256];

  char acStack_134 [260];

  byte **local_30;

  int *local_2c;

  local_2c = &local_23c;

  local_30 = &local_240;

  pbVar8 = param_2 + param_1;

  local_240 = param_2;

  while( true ) {

    if (pbVar8 <= local_240) {

      return 0;

    }

    local_234[0] = '\0';

    pbVar7 = *local_30;

    if (pbVar8 <= *local_30) break;

    do {

      uVar6 = (uint)*pbVar7;

      if ((uVar6 == 0) || (pbVar7 != *local_30)) {

        uVar2 = strlcat(local_234,".",0x100)   //possible issue identified - semgrep

        if (0xff < uVar2) goto LAB_0040e4d0;

        pbVar4 = pbVar7;

        if (uVar6 == 0) goto LAB_0040e6a8;

      }

      pbVar4 = pbVar7 + 1;

      if ((0x3f < uVar6) || ((int)pbVar8 - (int)pbVar4 < (int)uVar6)) goto LAB_0040e4d0;

      iVar5 = uVar6 - 1;

      if (uVar6 != 0) {

        if (pbVar8 <= pbVar4) break;

        if ((*(ushort *)(___ctype_b + (uint)*pbVar4 * 2) & 0x40) == 0) goto LAB_0040e4d0;

        while( true ) {

          uVar2 = snprintf(acStack_134,0x100,"%c")   //possible issue identified - semgrep

          pbVar4 = pbVar4 + 1;

          if (0xff < uVar2) goto LAB_0040e4d0;

          uVar2 = strlcat(local_234,acStack_134,0x100)   //possible issue identified - semgrep

          if (0xff < uVar2) goto LAB_0040e4d0;

          iVar5 = iVar5 + -1;

          if ((int)(pbVar7 + ((uVar6 + 1) - (int)pbVar4)) < 1) break;

          if (pbVar8 <= pbVar4) goto LAB_0040e694;

          if ((*(ushort *)(___ctype_b + (uint)*pbVar4 * 2) & 0x40) == 0) goto LAB_0040e4d0;

        }

      }

      pbVar7 = pbVar4;

    } while (pbVar4 < pbVar8);

LAB_0040e694:

    if (iVar5 != 0) break;

LAB_0040e6a8:

    *local_30 = pbVar4 + 1;

    sVar3 = strlen(local_234);

    local_23c = sVar3 + 1   //possible issue identified - semgrep

    local_238 = local_234;

    iVar5 = dhcp6_add_listval(param_4,8,local_2c,0);

    if (iVar5 == 0) {

      uVar1 = dhcp6optstr(param_3);

      dprintf(3,"dhcp6_get_domain","failed to copy a %s domain name",uVar1);

      return 0xffffffff;

    }

  }

LAB_0040e4d0:

  uVar1 = dhcp6optstr(param_3);

  dprintf(6,"dhcp6_get_domain","failed to decode a %s domain name",uVar1);

  dprintf(6,"dhcp6_get_domain","malformed DHCP option: type %d, len %d",param_3,param_1);

  return 0xffffffff;

}