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https://github.com/reactos/reactos.git
synced 2026-05-30 23:33:24 +08:00
[DHCPCSVC] Implement alternate configuration
- Set the ip address, subnet mask and default gateway when an alternate configuration has been configured. - Set registry values for the alternate configuration and APIPA.
This commit is contained in:
Eric Kohl
@@ -1213,53 +1213,187 @@ send_discover(void *ipp)
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void
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state_panic(void *ipp)
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{
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struct interface_info *ip = ipp;
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uint16_t address_low;
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int i;
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CHAR szKeyNameBuffer[200] = "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\";
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CHAR Server[] = "255.255.255.255";
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CHAR SubnetMask[] = "255.255.0.0";
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CHAR AddressBuffer[32];
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struct interface_info *ip = ipp;
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uint16_t address_low;
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int i;
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IPAddr IpAddress;
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ULONG Buffer[20];
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ULONG BufferSize;
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DWORD ret;
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HKEY hKey = NULL;
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PDHCP_ADAPTER Adapter = AdapterFindInfo(ip);
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NTSTATUS Status;
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DWORD lease = 0;
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time_t cur_time, never_time = 0x7FFFFFFF;
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struct in_addr addr;
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note("No DHCPOFFERS received.");
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note("No DHCPOFFERS received.");
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time(&cur_time);
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strcat(szKeyNameBuffer, Adapter->DhclientInfo.name);
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if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, szKeyNameBuffer, 0, KEY_WRITE, &hKey) != ERROR_SUCCESS)
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hKey = NULL;
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if (Adapter && !Adapter->NteContext)
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{
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/* Generate an automatic private address */
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DbgPrint("DHCPCSVC: Failed to receive a response from a DHCP server. An automatic private address will be assigned.\n");
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/* FIXME: The address generation code sucks */
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srand(0);
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for (;;)
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: Failed to receive a response from a DHCP server\n"));
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if ((Adapter->AlternateConfiguration != NULL) &&
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(Adapter->AlternateConfiguration->IpAddress != 0))
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{
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address_low = rand();
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for (i = 0; i < ip->hw_address.hlen; i++)
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address_low += ip->hw_address.haddr[i];
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/* Use the alternate configuration */
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: The alternate configuration will be used.\n"));
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IpAddress = htonl(0xA9FE0000 | address_low); // 169.254.X.X
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/* IPAddress & SubnetMask */
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Status = AddIPAddress(htonl(Adapter->AlternateConfiguration->IpAddress),
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htonl(Adapter->AlternateConfiguration->SubnetMask),
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Adapter->IfMib.dwIndex,
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&Adapter->NteContext,
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&Adapter->NteInstance);
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if (!NT_SUCCESS(Status))
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DH_DbgPrint(MID_TRACE,("AddIPAddress: %lx\n", Status));
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/* Send an ARP request to check if the IP address is already in use */
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BufferSize = sizeof(Buffer);
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ret = SendARP(IpAddress,
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IpAddress,
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Buffer,
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&BufferSize);
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: SendARP returned %lu\n", ret));
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if (ret != 0)
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/* DefaultGateway */
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if (Adapter->AlternateConfiguration->DefaultGateway != 0)
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{
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/* The IP address is not in use */
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: Using automatic private address\n"));
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AddIPAddress(IpAddress,
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htonl(0xFFFF0000), // 255.255.0.0
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Adapter->IfMib.dwIndex,
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&Adapter->NteContext,
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&Adapter->NteInstance);
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return;
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Adapter->RouterMib.dwForwardDest = 0; /* Default route */
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Adapter->RouterMib.dwForwardMask = 0;
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Adapter->RouterMib.dwForwardMetric1 = 1;
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Adapter->RouterMib.dwForwardIfIndex = Adapter->IfMib.dwIndex;
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if (Adapter->RouterMib.dwForwardNextHop)
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{
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/* If we set a default route before, delete it before continuing */
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DeleteIpForwardEntry(&Adapter->RouterMib);
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}
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Adapter->RouterMib.dwForwardNextHop = htonl(Adapter->AlternateConfiguration->DefaultGateway);
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Status = CreateIpForwardEntry(&Adapter->RouterMib);
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if (!NT_SUCCESS(Status))
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DH_DbgPrint(MID_TRACE,("CreateIpForwardEntry: %lx\n", Status));
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}
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if (hKey)
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{
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addr.S_un.S_addr = htonl(Adapter->AlternateConfiguration->IpAddress);
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RtlIpv4AddressToStringA(&addr, AddressBuffer);
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RegSetValueExA(hKey, "DhcpIPAddress", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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addr.S_un.S_addr = htonl(Adapter->AlternateConfiguration->SubnetMask);
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RtlIpv4AddressToStringA(&addr, AddressBuffer);
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RegSetValueExA(hKey, "DhcpSubnetMask", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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if (Adapter->AlternateConfiguration->DefaultGateway != 0)
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{
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addr.S_un.S_addr = htonl(Adapter->AlternateConfiguration->DefaultGateway);
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RtlIpv4AddressToStringA(&addr, AddressBuffer);
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RegSetValueExA(hKey, "DhcpDefaultGateway", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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}
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else
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{
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RegDeleteValueA(hKey, "DhcpDefaultGateway");
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}
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RegSetValueExA(hKey, "DhcpServer", 0, REG_SZ, (LPBYTE)Server, strlen(Server) + 1);
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RegDeleteValueA(hKey, "DhcpDomain");
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if (Adapter->AlternateConfiguration->DnsServer1 != 0)
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{
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char *pPtr;
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addr.S_un.S_addr = htonl(Adapter->AlternateConfiguration->DnsServer1);
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pPtr = RtlIpv4AddressToStringA(&addr, AddressBuffer);
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if (Adapter->AlternateConfiguration->DnsServer2 != 0)
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{
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*pPtr = ' ';
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pPtr++;
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addr.S_un.S_addr = htonl(Adapter->AlternateConfiguration->DnsServer2);
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RtlIpv4AddressToStringA(&addr, pPtr);
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}
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RegSetValueExA(hKey, "DhcpNameServer", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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}
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else
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{
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RegDeleteValueA(hKey, "DhcpNameServer");
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}
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RegDeleteValueA(hKey, "IPAutoconfigurationAddress");
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RegDeleteValueA(hKey, "IPAutoconfigurationMask");
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RegSetValueExA(hKey, "Lease", 0, REG_DWORD, (LPBYTE)&lease, sizeof(DWORD));
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RegSetValueExA(hKey, "LeaseObtainedTime", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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RegSetValueExA(hKey, "LeaseTerminatesTime", 0, REG_DWORD, (LPBYTE)&never_time, sizeof(DWORD));
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RegSetValueExA(hKey, "T1", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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RegSetValueExA(hKey, "T2", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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}
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}
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else
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{
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/* Generate an automatic private address */
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: An automatic private address will be assigned.\n"));
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/* FIXME: The address generation code sucks */
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srand(0);
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for (;;)
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{
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address_low = rand();
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for (i = 0; i < ip->hw_address.hlen; i++)
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address_low += ip->hw_address.haddr[i];
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IpAddress = htonl(0xA9FE0000 | address_low); // 169.254.X.X
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/* Send an ARP request to check if the IP address is already in use */
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BufferSize = sizeof(Buffer);
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ret = SendARP(IpAddress,
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IpAddress,
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Buffer,
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&BufferSize);
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: SendARP returned %lu\n", ret));
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if (ret != 0)
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{
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/* The IP address is not in use */
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: Using automatic private address\n"));
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Status = AddIPAddress(IpAddress,
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htonl(0xFFFF0000), // 255.255.0.0
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Adapter->IfMib.dwIndex,
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&Adapter->NteContext,
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&Adapter->NteInstance);
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if (!NT_SUCCESS(Status))
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DH_DbgPrint(MID_TRACE,("AddIPAddress: %lx\n", Status));
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if (hKey)
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{
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addr.S_un.S_addr = IpAddress;
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RtlIpv4AddressToStringA(&addr, AddressBuffer);
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RegSetValueExA(hKey, "DhcpIPAddress", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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RegSetValueExA(hKey, "DhcpSubnetMask", 0, REG_SZ, (LPBYTE)SubnetMask, strlen(SubnetMask) + 1);
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RegSetValueExA(hKey, "DhcpServer", 0, REG_SZ, (LPBYTE)Server, strlen(Server) + 1);
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RegDeleteValueA(hKey, "DhcpDefaultGateway");
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RegDeleteValueA(hKey, "DhcpDomain");
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RegDeleteValueA(hKey, "DhcpNameServer");
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RegSetValueExA(hKey, "IPAutoconfigurationAddress", 0, REG_SZ, (LPBYTE)AddressBuffer, strlen(AddressBuffer) + 1);
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RegSetValueExA(hKey, "IPAutoconfigurationMask", 0, REG_SZ, (LPBYTE)SubnetMask, strlen(SubnetMask) + 1);
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RegSetValueExA(hKey, "Lease", 0, REG_DWORD, (LPBYTE)&lease, sizeof(DWORD));
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RegSetValueExA(hKey, "LeaseObtainedTime", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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RegSetValueExA(hKey, "LeaseTerminatesTime", 0, REG_DWORD, (LPBYTE)&never_time, sizeof(DWORD));
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RegSetValueExA(hKey, "T1", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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RegSetValueExA(hKey, "T2", 0, REG_DWORD, (LPBYTE)&cur_time, sizeof(DWORD));
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}
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goto done;
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}
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}
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}
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}
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done:
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if (hKey)
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RegCloseKey(hKey);
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}
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void
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