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Add the possibility to send the Virtual Hub Name to an external DHCP server

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This commit is contained in:
Mykhaylo Yehorov 2015-02-09 23:47:35 +02:00
parent 67fbd56574
commit ffddfe1ad3
6 changed files with 44 additions and 0 deletions
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2
src/Cedar/Hub.c
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@ -601,6 +601,7 @@ void DataToHubOptionStruct(HUB_OPTION *o, RPC_ADMIN_OPTION *ao)
GetHubAdminOptionDataAndSet(ao, "SecureNAT_RandomizeAssignIp", &o->SecureNAT_RandomizeAssignIp);
GetHubAdminOptionDataAndSet(ao, "DetectDormantSessionInterval", &o->DetectDormantSessionInterval);
GetHubAdminOptionDataAndSet(ao, "NoPhysicalIPOnPacketLog", &o->NoPhysicalIPOnPacketLog);
GetHubAdminOptionDataAndSet(ao, "UseHubNameAsDhcpUserClassOption", &o->UseHubNameAsDhcpUserClassOption);
}
// Convert the contents of the HUB_OPTION to data
@ -670,6 +671,7 @@ void HubOptionStructToData(RPC_ADMIN_OPTION *ao, HUB_OPTION *o, char *hub_name)
Add(aol, NewAdminOption("SecureNAT_RandomizeAssignIp", o->SecureNAT_RandomizeAssignIp));
Add(aol, NewAdminOption("DetectDormantSessionInterval", o->DetectDormantSessionInterval));
Add(aol, NewAdminOption("NoPhysicalIPOnPacketLog", o->NoPhysicalIPOnPacketLog));
Add(aol, NewAdminOption("UseHubNameAsDhcpUserClassOption", o->UseHubNameAsDhcpUserClassOption));
Zero(ao, sizeof(RPC_ADMIN_OPTION));

1
src/Cedar/Hub.h
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@ -279,6 +279,7 @@ struct HUB_OPTION
bool SecureNAT_RandomizeAssignIp; // Randomize the assignment IP address for new DHCP client
UINT DetectDormantSessionInterval; // Interval (seconds) threshold to detect a dormant VPN session
bool NoPhysicalIPOnPacketLog; // Disable saving physical IP address on the packet log
bool UseHubNameAsDhcpUserClassOption; // Add HubName to DHCP request as User-Class option
};
// MAC table entry

29
src/Cedar/IPsec_IPC.c
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@ -663,6 +663,24 @@ void FreeIPC(IPC *ipc)
Free(ipc);
}
// Set User Class option if corresponding Virtual Hub optin is set
void IPCDhcpSetConditionalUserClass(IPC *ipc, DHCP_OPTION_LIST *req)
{
HUB *hub;
hub = GetHub(ipc->Cedar, ipc->HubName);
if (hub == NULL)
{
return;
}
if (hub->Option && hub->Option->UseHubNameAsDhcpUserClassOption == true)
{
StrCpy(req->UserClass, sizeof(req->UserClass), ipc->HubName);
}
ReleaseHub(hub);
}
// Release the IP address from the DHCP server
void IPCDhcpFreeIP(IPC *ipc, IP *dhcp_server)
{
@ -677,6 +695,7 @@ void IPCDhcpFreeIP(IPC *ipc, IP *dhcp_server)
Zero(&req, sizeof(req));
req.Opcode = DHCP_RELEASE;
req.ServerAddress = IPToUINT(dhcp_server);
IPCDhcpSetConditionalUserClass(ipc, &req);
FreeDHCPv4Data(IPCSendDhcpRequest(ipc, NULL, tran_id, &req, 0, 0, NULL));
}
@ -697,6 +716,7 @@ void IPCDhcpRenewIP(IPC *ipc, IP *dhcp_server)
req.Opcode = DHCP_REQUEST;
StrCpy(req.Hostname, sizeof(req.Hostname), ipc->ClientHostname);
req.RequestedIp = IPToUINT(&ipc->ClientIPAddress);
IPCDhcpSetConditionalUserClass(ipc, &req);
FreeDHCPv4Data(IPCSendDhcpRequest(ipc, dhcp_server, tran_id, &req, 0, 0, NULL));
}
@ -719,6 +739,7 @@ bool IPCDhcpRequestInformIP(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_t
req.Opcode = DHCP_INFORM;
req.ClientAddress = IPToUINT(client_ip);
StrCpy(req.Hostname, sizeof(req.Hostname), ipc->ClientHostname);
IPCDhcpSetConditionalUserClass(ipc, &req);
d = IPCSendDhcpRequest(ipc, NULL, tran_id, &req, DHCP_ACK, IPC_DHCP_TIMEOUT, discon_poll_tube);
if (d == NULL)
@ -783,6 +804,7 @@ LABEL_RETRY_FOR_OPENVPN:
req.RequestedIp = request_ip;
req.Opcode = DHCP_DISCOVER;
StrCpy(req.Hostname, sizeof(req.Hostname), ipc->ClientHostname);
IPCDhcpSetConditionalUserClass(ipc, &req);
d = IPCSendDhcpRequest(ipc, NULL, tran_id, &req, DHCP_OFFER, IPC_DHCP_TIMEOUT, discon_poll_tube);
if (d == NULL)
@ -893,6 +915,7 @@ LABEL_RETRY_FOR_OPENVPN:
StrCpy(req.Hostname, sizeof(req.Hostname), ipc->ClientHostname);
req.ServerAddress = d->ParsedOptionList->ServerAddress;
req.RequestedIp = d->ParsedOptionList->ClientAddress;
IPCDhcpSetConditionalUserClass(ipc, &req);
d2 = IPCSendDhcpRequest(ipc, NULL, tran_id, &req, DHCP_ACK, IPC_DHCP_TIMEOUT, discon_poll_tube);
if (d2 == NULL)
@ -1227,6 +1250,12 @@ BUF *IPCBuildDhcpRequestOptions(IPC *ipc, DHCP_OPTION_LIST *opt)
Add(o, NewDhcpOption(DHCP_ID_HOST_NAME, opt->Hostname, StrLen(opt->Hostname)));
}
// User Class
if (IsEmptyStr(opt->UserClass) == false)
{
Add(o, NewDhcpOption(DHCP_ID_USER_CLASS, opt->UserClass, StrLen(opt->UserClass)));
}
// Vendor
Add(o, NewDhcpOption(DHCP_ID_VENDOR_ID, IPC_DHCP_VENDOR_ID, StrLen(IPC_DHCP_VENDOR_ID)));

4
src/Cedar/Server.c
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@ -4106,6 +4106,7 @@ void SiLoadHubOptionCfg(FOLDER *f, HUB_OPTION *o)
o->SecureNAT_RandomizeAssignIp = CfgGetBool(f, "SecureNAT_RandomizeAssignIp");
o->DetectDormantSessionInterval = CfgGetInt(f, "DetectDormantSessionInterval");
o->NoPhysicalIPOnPacketLog = CfgGetBool(f, "NoPhysicalIPOnPacketLog");
o->UseHubNameAsDhcpUserClassOption = CfgGetBool(f, "UseHubNameAsDhcpUserClassOption");
// Enabled by default
if (CfgIsItem(f, "ManageOnlyPrivateIP"))
@ -4204,6 +4205,7 @@ void SiWriteHubOptionCfg(FOLDER *f, HUB_OPTION *o)
CfgAddBool(f, "DisableUserModeSecureNAT", o->DisableUserModeSecureNAT);
CfgAddBool(f, "DisableCheckMacOnLocalBridge", o->DisableCheckMacOnLocalBridge);
CfgAddBool(f, "DisableCorrectIpOffloadChecksum", o->DisableCorrectIpOffloadChecksum);
CfgAddBool(f, "UseHubNameAsDhcpUserClassOption", o->UseHubNameAsDhcpUserClassOption);
}
// Write the user
@ -7530,6 +7532,7 @@ void SiCalledUpdateHub(SERVER *s, PACK *p)
o.DisableUserModeSecureNAT = PackGetBool(p, "DisableUserModeSecureNAT");
o.DisableCheckMacOnLocalBridge = PackGetBool(p, "DisableCheckMacOnLocalBridge");
o.DisableCorrectIpOffloadChecksum = PackGetBool(p, "DisableCorrectIpOffloadChecksum");
o.UseHubNameAsDhcpUserClassOption = PackGetBool(p, "UseHubNameAsDhcpUserClassOption");
save_packet_log = PackGetInt(p, "SavePacketLog");
packet_log_switch_type = PackGetInt(p, "PacketLogSwitchType");
@ -9380,6 +9383,7 @@ void SiPackAddCreateHub(PACK *p, HUB *h)
PackAddInt(p, "SecurityLogSwitchType", h->LogSetting.SecurityLogSwitchType);
PackAddData(p, "HashedPassword", h->HashedPassword, SHA1_SIZE);
PackAddData(p, "SecurePassword", h->SecurePassword, SHA1_SIZE);
PackAddBool(p, "UseHubNameAsDhcpUserClassOption", h->Option->UseHubNameAsDhcpUserClassOption);
SiAccessListToPack(p, h->AccessList);

7
src/Mayaqua/TcpIp.h
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@ -623,6 +623,7 @@ struct ICMPV6_HEADER_INFO
#define DHCP_ID_CLIENT_ID 0x3d
#define DHCP_ID_VENDOR_ID 0x3c
#define DHCP_ID_REQ_PARAM_LIST 0x37
#define DHCP_ID_USER_CLASS 0x4d
#define DHCP_ID_CLASSLESS_ROUTE 0x79
#define DHCP_ID_MS_CLASSLESS_ROUTE 0xF9
#define DHCP_ID_PRIVATE 0xFA
@ -794,6 +795,8 @@ struct DHCP_CLASSLESS_ROUTE_TABLE
DHCP_CLASSLESS_ROUTE Entries[MAX_DHCP_CLASSLESS_ROUTE_ENTRIES]; // Entries
};
#define MAX_USER_CLASS_LEN 255
// DHCP option list
struct DHCP_OPTION_LIST
{
@ -803,6 +806,10 @@ struct DHCP_OPTION_LIST
// Client request
UINT RequestedIp; // Requested IP address
char Hostname[MAX_HOST_NAME_LEN + 1]; // Host name
char UserClass[MAX_USER_CLASS_LEN + 1]; // User class
// RFC3003 defines that User Class option is array of text strings,
// but the most popular DHCP clients and servers,
// i.e. ISC DHCP and Microsoft DHCP Server, consider it a text string
// Server response
UINT ClientAddress; // Client address

1
src/bin/hamcore/strtable_en.stb
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@ -555,6 +555,7 @@ HUB_AO_AssignVLanIdByRadiusAttribute Enable the VLAN ID dynamic assignment func
HUB_AO_SecureNAT_RandomizeAssignIp If you set this option to non-zero value, then the Virtual DHCP Server of the SecureNAT function will choose an unused IP address randomly from the DHCP pool while the default behavior is to choose the first unused IP address.
HUB_AO_DetectDormantSessionInterval If you set this option to non-zero value, then the Virtual Hub will treat the VPN sessions, which have transmitted no packets for the last specified intervals (in seconds), as Dormant Sessions. The Virtual Hub will not flood packets, which should be flood, to any Dormant Sessions.
HUB_AO_NoPhysicalIPOnPacketLog If you set this option to non-zero value, then the physical IP addresses of VPN clients of either the source VPN session or the destination VPN session will not be recorded on the packet log file.
HUB_AO_UseHubNameAsDhcpUserClassOption If you set this option to non-zero value, then the Virtual Hub Name will be added to a DHCP request to an external DHCP server as the "User-Class" option. This allows to use separate pools of IP addresses for each Virtual Hub.
# Concerning failed connection dialogs