Ciao, ho bisogno di modificare questo codice facendo in modo di non utilizzare l'attributo static per implementare i metodi e le classi. Dopo avere eliminato dal codice le Keywords static dal codice, che devo fare? Grazie mille in anticipo
codice:using System; using System.Net;namespace NetCalc { /// <summary> /// Summary description for IPTool. /// </summary> public class IPTool { // first (0x00) only for fill - so array starts with bit 1 static byte [] bit = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, (byte)0x80 }; protected string ip = null; protected byte [] ipBytes = null; //protected byte a,b,c,d; protected int networkPrefix; // z.b. 24 for /24 protected bool firstSubNetBit = false; public IPTool(string ip) { this.setIp(ip); } public static byte getBit(int bit) { byte r = 0; if(bit >= 1 && bit <= 8) r = IPTool.bit[bit]; return r; } public static byte setBit(byte b, int bit) { if(bit >= 1 && bit <= 8) return (byte) (b | IPTool.bit[bit]); else return 0; } public static bool isBitSet(byte b, int bit) { bool r = false; if(bit >= 1 && bit <= 8) r = ((b & IPTool.bit[bit]) != 0); return r; } /* * return true if domainName is an IP */ static public bool isIP (String domainName) { //if (domainName.matches("[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}")) if (domainName.Equals("[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}")) return true; else return false; } /* * Converts (unsigned)byte to int */ public static int byte2int (byte b) { int i = b; if (b < 0) i = b & 0x7f + 128; return i; } // return first byte of IP public byte get1Byte () { return this.ipBytes[0]; } // return second byte of IP public byte get2Byte () { return this.ipBytes[1]; } // return third byte of IP public byte get3Byte () { return this.ipBytes[2]; } // return fourth byte of IP public byte get4Byte () { return this.ipBytes[3]; } // return array with all bytes of IP public byte [] getBytes() { //return InetAddress.getByName(this.ip).getAddress(); //return Dns.GetHostByName(this.ip).AddressList; return IPAddress.Parse(this.ip).GetAddressBytes(); } public String getIp() { return this.ip; } public void setIp(String ip) { this.ip = ip; this.ipBytes = getBytes(); this.setPrefix2NetworkClassPrefix(); } public void setPrefix2NetworkClassPrefix () { this.setNetworkPrefix(this.getNetworkClassPrefix()); } public int getNetworkClassPrefix () { // set network-prefix with Class-Type int netClass = getNetworkClass(); switch (netClass) { case 0: return 8; // Class A case 1: return 16; // Class B case 2: return 24; // Class C //default: setNetworkPrefix(-1); // other Classes have no default Prefix } return -1; } /* * return -1 if out of range (0-255) or other error */ private int convertIPByte(String ipByte) { //int res = Integer.valueOf(ipByte).intValue(); int res = Int32.Parse(ipByte); if (res < 0 || res > 255) { res = -1; this.ip = null; } return res; } /** * @return */ public int getNetworkPrefix() { return this.networkPrefix; } /** * @param prefix */ public void setNetworkPrefix(int prefix) { this.networkPrefix = prefix; } public String getNetworkClassName () { switch (this.getNetworkClass()) { case 0: return "Class A"; case 1: return "Class B"; case 2: return "Class C"; case 3: return "Class D/Multicast"; case 4: return "Class E/not used"; default: return "error"; } } /* * 0=Class A * 1=Class B * 2=Class C * 3=Class D * 4=Class E * -1=error */ public int getNetworkClass () { // Test Class A: first bit=0 if (!IPTool.isBitSet(this.get1Byte(),8)) return 0; // Test Class B: first 2bit=10 else if (!IPTool.isBitSet(this.get1Byte(),7)) return 1; // Test Class C: first 3bit=110 else if (!IPTool.isBitSet(this.get1Byte(),6)) return 2; // Test Class D: first 4bit=1110 else if (!IPTool.isBitSet(this.get1Byte(),5)) return 3; // Test Class E: first 4bit=1111 ( = all other) // else if (!IPTool.isBitSet(this.get1Byte(),8)) return 4; else return 4; /* // Test Class A: first bit=0 if ((this.get1Byte() | (byte)0x7f) == (byte)0x7f) return 0; // Test Class B: first 2bit=10 if ((this.get1Byte() | 0xbf) == 0xbf) return 1; // Test Class C: first 3bit=110 if ((this.get1Byte() | 0xdf) == 0xdf) return 2; // Test Class D: first 4bit=1110 if ((this.get1Byte() | 0xef) == 0xef) return 3; // Test Class E: first 4bit=1111 if ((this.get1Byte() & 0xf0) == 0xf0) return 4; return -1; */ } public String getNetworkMask () { return getNetworkMaskByPrefix (this.networkPrefix); } public String getNetworkMaskByPrefix (int prefix) { switch (prefix) { case 8: return "255.0.0.0"; case 9: return "255.128.0.0"; case 10: return "255.192.0.0"; case 11: return "255.224.0.0"; case 12: return "255.240.0.0"; case 13: return "255.248.0.0"; case 14: return "255.252.0.0"; case 15: return "255.254.0.0"; case 16: return "255.255.0.0"; case 17: return "255.255.128.0"; case 18: return "255.255.192.0"; case 19: return "255.255.224.0"; case 20: return "255.255.240.0"; case 21: return "255.255.248.0"; case 22: return "255.255.252.0"; case 23: return "255.255.254.0"; case 24: return "255.255.255.0"; case 25: return "255.255.255.128"; case 26: return "255.255.255.192"; case 27: return "255.255.255.224"; case 28: return "255.255.255.240"; case 29: return "255.255.255.248"; case 30: return "255.255.255.252"; default: return ""; } } public int getMaxNetworkHosts () { // 2^(32-networkprefix) // -2 ... because .0 and .255 return ((int)Math.Pow(2,(32-this.networkPrefix)))-2; } public int getMaxSubNets () { // Bits from Subnet = prefix-class_prefix int count = (int)Math.Pow(2, this.networkPrefix - this.getNetworkClassPrefix()); // -2 because 1 bit for routing if (!this.isFirstSubNetBit() || this.getNetworkClassPrefix()==this.networkPrefix) count-=2; if (count < 0 ) count = 0; return count; } public long getNetworkLong () { long mask = (long)Math.Pow (2, this.networkPrefix)-1; mask = mask << (32-this.networkPrefix); return (mask & ip2Long()); } public String getNetwork () { return long2String(getNetworkLong()); } public long getBroadCastLong () { long netMask = (long)Math.Pow (2, this.networkPrefix)-1; netMask = netMask << (32-this.networkPrefix); long hostMask = (long) Math.Pow(2, 32-this.networkPrefix)-1; return (netMask = (ip2Long() & netMask) | hostMask); } public String getBroadCast () { return long2String(getBroadCastLong()); } public String[] getNetworkIPRange () { String [] result = new String [2]; //String from, to; /** * Start * +1 because first = network */ result [0] = long2String (getNetworkLong() + 1); /** * End * -1 because last = broadcast */ result [1] = long2String(getBroadCastLong() -1); return result; } public long ip2Long () { return ((long)(IPTool.byte2int(this.get1Byte()) * 256 + IPTool.byte2int(this.get2Byte())) * 256 + IPTool.byte2int(this.get3Byte())) * 256 + IPTool.byte2int(this.get4Byte()); } public String long2String (long ip) { long a = (long)(ip & 0xff000000) >> 24; long b = (long)(ip & 0x00ff0000) >> 16; long c = (long)(ip & 0x0000ff00) >> 8; long d = (long)(ip & 0xff); return a+"."+b+"."+c+"."+d; } public bool isFirstSubNetBit() { return firstSubNetBit; } public void setFirstSubNetBit(bool b) { firstSubNetBit = b; } public static IPTool getNextIP (String ip) { IPTool nextIp = new IPTool (ip); nextIp.setIp(nextIp.long2String(nextIp.ip2Long()+(long)1)); return nextIp; } public IPTool getNextSubNet (long numberOfHosts) { IPTool ip = IPTool.getNextIP(this.getBroadCast()); ip.setIp(this.long2String(ip.ip2Long()+(long)1)); ip.setFirstSubNetBit(this.isFirstSubNetBit()); int lastPrefix = ip.getNetworkClassPrefix(); int prefix = 30; do { if (prefix < ip.getNetworkClassPrefix()) return null; // no subnet found ip.setNetworkPrefix(prefix); prefix--; // ignore subnetbit? if (!ip.isFirstSubNetBit() && prefix == lastPrefix+1) prefix--; } while (ip.getMaxNetworkHosts() < numberOfHosts); return ip; } } }
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