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GenerateNextAvailableIP fixed

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This commit is contained in:
feodor_fitsner 2012-10-05 11:08:18 -07:00
parent f3ece2fafc
commit b199054bcf
2 changed files with 42 additions and 23 deletions
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34
WebsitePanel/Sources/WebsitePanel.EnterpriseServer/Code/Common/IPAddress.cs
View file

@ -5,7 +5,7 @@ using System.Web;
namespace WebsitePanel.EnterpriseServer {
public struct IPAddress {
public struct IPAddress : IComparable {
public Int128 Address;
public bool V6 { get; private set; }
public bool V4 { get { return !V6 || Null; } }
@ -68,10 +68,19 @@ namespace WebsitePanel.EnterpriseServer {
if (Null)
return "";
var s = new System.Text.StringBuilder();
if (!V6) {
var ipl = Address;
s.Append(String.Format("{0}.{1}.{2}.{3}", (ipl >> 24) & 0xFFL, (ipl >> 16) & 0xFFL, (ipl >> 8) & 0xFFL, (ipl & 0xFFL)));
} else if (!IsMask) {
if (!V6)
{
var ipl = Address;
if (IsMask)
{
int digits = 32 - Cidr;
ipl = (Int128.MaxValue << 1) | 0x1; // remove left sign bit
ipl = ipl << digits;
}
s.Append(String.Format("{0}.{1}.{2}.{3}", (ipl >> 24) & 0xFFL, (ipl >> 16) & 0xFFL, (ipl >> 8) & 0xFFL, (ipl & 0xFFL)));
}
else if (!IsMask)
{
var vals = new List<int>();
int i;
@ -181,7 +190,20 @@ namespace WebsitePanel.EnterpriseServer {
}
public static implicit operator IPAddress(NullIPAddress a) { return new IPAddress { Null = true, Address = 0, Cidr = -1 }; }
}
public int CompareTo(object obj)
{
var a = this.Address;
var b = ((IPAddress)obj).Address;
if (a < b)
return 1;
else if (a > b)
return -1;
else
return 0;
}
}
public class NullIPAddress { }

31
WebsitePanel/Sources/WebsitePanel.EnterpriseServer/Code/Virtualization/VirtualizationServerController.cs
View file

@ -3235,40 +3235,31 @@ namespace WebsitePanel.EnterpriseServer
Trace.TraceInformation("Param - subnetMask: {0}", subnetMask);
// start IP address
var startIp = IPAddress.Parse(startIPAddress);
var mask = IPAddress.Parse(subnetMask);
Trace.TraceInformation("Calculate initial value for lastAddress");
var lastAddress = (startIp & ~mask) - 1;
Trace.TraceInformation("Initial lastAddress: {0}", lastAddress.ToString());
var ip = IPAddress.Parse(startIPAddress) - 1;
Trace.TraceInformation("Start looking for next available IP");
foreach (var addr in ips.Keys)
{
if ((addr - lastAddress) > 1)
if ((addr - ip) > 1)
{
// it is a gap
Trace.TraceInformation("Gap");
break;
}
else
{
lastAddress = addr;
Trace.TraceInformation("New lastAddress: {0}", lastAddress.ToString());
ip = addr;
}
}
var genAddr = lastAddress + 1;
Trace.TraceInformation("Generated address: {0}", genAddr.ToString());
// final IP found
ip = ip + 1;
// convert to IP address
var ip = startIp & mask | genAddr;
string genIP = ip.ToString();
Trace.TraceInformation("Generated IP: {0}", genIP);
// store in cache
Trace.TraceInformation("Adding to sorted list");
ips.Add(genAddr, genIP);
ips.Add(ip, genIP);
Trace.TraceInformation("Leaving GenerateNextAvailablePrivateIP()");
return genIP;
@ -3292,8 +3283,14 @@ namespace WebsitePanel.EnterpriseServer
}
private static string GetPrivateNetworkSubnetMask(string cidr, bool v6) {
if (v6) return "/" + cidr;
else return IPAddress.Parse("/" + cidr).ToV4MaskString();
if (v6)
{
return "/" + cidr;
}
else
{
return IPAddress.Parse("/" + cidr).ToV4MaskString();
}
}
private static string GetSubnetMaskCidr(string subnetMask) {