mirror of
https://github.com/reactos/reactos.git
synced 2024-11-04 13:52:30 +00:00
455 lines
11 KiB
C
455 lines
11 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/dhcpcapi/dhcpcapi.c
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* PURPOSE: Client API for DHCP
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* COPYRIGHT: Copyright 2005 Art Yerkes <ayerkes@speakeasy.net>
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*/
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#include <rosdhcp.h>
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#include <winsvc.h>
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#define NDEBUG
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#include <debug.h>
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static WCHAR ServiceName[] = L"DHCP";
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SERVICE_STATUS_HANDLE ServiceStatusHandle = 0;
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SERVICE_STATUS ServiceStatus;
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HANDLE hStopEvent = NULL;
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static HANDLE PipeHandle = INVALID_HANDLE_VALUE;
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DWORD APIENTRY
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DhcpCApiInitialize(LPDWORD Version)
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{
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DWORD PipeMode;
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/* Wait for the pipe to be available */
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if (!WaitNamedPipeW(DHCP_PIPE_NAME, NMPWAIT_USE_DEFAULT_WAIT))
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{
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/* No good, we failed */
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return GetLastError();
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}
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/* It's available, let's try to open it */
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PipeHandle = CreateFileW(DHCP_PIPE_NAME,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL,
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OPEN_EXISTING,
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0,
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NULL);
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/* Check if we succeeded in opening the pipe */
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if (PipeHandle == INVALID_HANDLE_VALUE)
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{
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/* We didn't */
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return GetLastError();
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}
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/* Change the pipe into message mode */
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PipeMode = PIPE_READMODE_MESSAGE;
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if (!SetNamedPipeHandleState(PipeHandle, &PipeMode, NULL, NULL))
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{
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/* Mode change failed */
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CloseHandle(PipeHandle);
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PipeHandle = INVALID_HANDLE_VALUE;
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return GetLastError();
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}
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else
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{
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/* We're good to go */
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*Version = 2;
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return NO_ERROR;
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}
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}
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VOID APIENTRY
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DhcpCApiCleanup(VOID)
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{
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CloseHandle(PipeHandle);
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PipeHandle = INVALID_HANDLE_VALUE;
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}
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DWORD APIENTRY
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DhcpQueryHWInfo(DWORD AdapterIndex,
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PDWORD MediaType,
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PDWORD Mtu,
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PDWORD Speed)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqQueryHWInfo;
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Req.AdapterIndex = AdapterIndex;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (!Result)
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{
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/* Pipe transaction failed */
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return 0;
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}
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if (Reply.Reply == 0)
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return 0;
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*MediaType = Reply.QueryHWInfo.MediaType;
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*Mtu = Reply.QueryHWInfo.Mtu;
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*Speed = Reply.QueryHWInfo.Speed;
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return 1;
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}
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DWORD APIENTRY
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DhcpLeaseIpAddress(DWORD AdapterIndex)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqLeaseIpAddress;
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Req.AdapterIndex = AdapterIndex;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (!Result)
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{
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/* Pipe transaction failed */
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return 0;
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}
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return Reply.Reply;
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}
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DWORD APIENTRY
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DhcpReleaseIpAddressLease(DWORD AdapterIndex)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqReleaseIpAddress;
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Req.AdapterIndex = AdapterIndex;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (!Result)
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{
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/* Pipe transaction failed */
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return 0;
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}
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return Reply.Reply;
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}
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DWORD APIENTRY
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DhcpRenewIpAddressLease(DWORD AdapterIndex)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqRenewIpAddress;
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Req.AdapterIndex = AdapterIndex;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (!Result)
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{
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/* Pipe transaction failed */
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return 0;
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}
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return Reply.Reply;
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}
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DWORD APIENTRY
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DhcpStaticRefreshParams(DWORD AdapterIndex,
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DWORD Address,
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DWORD Netmask)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqStaticRefreshParams;
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Req.AdapterIndex = AdapterIndex;
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Req.Body.StaticRefreshParams.IPAddress = Address;
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Req.Body.StaticRefreshParams.Netmask = Netmask;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (!Result)
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{
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/* Pipe transaction failed */
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return 0;
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}
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return Reply.Reply;
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}
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/*!
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* Set new TCP/IP parameters and notify DHCP client service of this
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*
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* \param[in] ServerName
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* NULL for local machine
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*
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* \param[in] AdapterName
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* IPHLPAPI name of adapter to change
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*
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* \param[in] NewIpAddress
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* TRUE if IP address changes
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*
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* \param[in] IpAddress
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* New IP address (network byte order)
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*
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* \param[in] SubnetMask
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* New subnet mask (network byte order)
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*
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* \param[in] DhcpAction
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* 0 - don't modify
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* 1 - enable DHCP
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* 2 - disable DHCP
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*
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* \return non-zero on success
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*
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* \remarks Undocumented by Microsoft
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*/
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DWORD APIENTRY
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DhcpNotifyConfigChange(LPWSTR ServerName,
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LPWSTR AdapterName,
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BOOL NewIpAddress,
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DWORD IpIndex,
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DWORD IpAddress,
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DWORD SubnetMask,
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INT DhcpAction)
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{
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DPRINT1("DHCPCSVC: DhcpNotifyConfigChange not implemented yet\n");
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return 0;
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}
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DWORD APIENTRY
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DhcpRequestParams(DWORD Flags,
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PVOID Reserved,
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LPWSTR AdapterName,
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LPDHCPCAPI_CLASSID ClassId,
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DHCPCAPI_PARAMS_ARRAY SendParams,
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DHCPCAPI_PARAMS_ARRAY RecdParams,
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LPBYTE Buffer,
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LPDWORD pSize,
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LPWSTR RequestIdStr)
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{
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UNIMPLEMENTED;
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return 0;
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}
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/*!
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* Get DHCP info for an adapter
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*
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* \param[in] AdapterIndex
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* Index of the adapter (iphlpapi-style) for which info is
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* requested
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*
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* \param[out] DhcpEnabled
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* Returns whether DHCP is enabled for the adapter
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*
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* \param[out] DhcpServer
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* Returns DHCP server IP address (255.255.255.255 if no
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* server reached yet), in network byte order
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*
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* \param[out] LeaseObtained
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* Returns time at which the lease was obtained
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*
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* \param[out] LeaseExpires
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* Returns time at which the lease will expire
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*
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* \return non-zero on success
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*
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* \remarks This is a ReactOS-only routine
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*/
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DWORD APIENTRY
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DhcpRosGetAdapterInfo(DWORD AdapterIndex,
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PBOOL DhcpEnabled,
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PDWORD DhcpServer,
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time_t* LeaseObtained,
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time_t* LeaseExpires)
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{
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COMM_DHCP_REQ Req;
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COMM_DHCP_REPLY Reply;
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DWORD BytesRead;
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BOOL Result;
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ASSERT(PipeHandle != INVALID_HANDLE_VALUE);
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Req.Type = DhcpReqGetAdapterInfo;
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Req.AdapterIndex = AdapterIndex;
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Result = TransactNamedPipe(PipeHandle,
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&Req, sizeof(Req),
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&Reply, sizeof(Reply),
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&BytesRead, NULL);
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if (Result && Reply.Reply != 0)
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*DhcpEnabled = Reply.GetAdapterInfo.DhcpEnabled;
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else
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*DhcpEnabled = FALSE;
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if (*DhcpEnabled)
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{
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*DhcpServer = Reply.GetAdapterInfo.DhcpServer;
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*LeaseObtained = Reply.GetAdapterInfo.LeaseObtained;
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*LeaseExpires = Reply.GetAdapterInfo.LeaseExpires;
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}
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else
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{
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*DhcpServer = INADDR_NONE;
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*LeaseObtained = 0;
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*LeaseExpires = 0;
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}
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return Reply.Reply;
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}
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static VOID
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UpdateServiceStatus(DWORD dwState)
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{
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ServiceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
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ServiceStatus.dwCurrentState = dwState;
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if (dwState == SERVICE_RUNNING)
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ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_STOP;
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else
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ServiceStatus.dwControlsAccepted = 0;
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ServiceStatus.dwWin32ExitCode = 0;
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ServiceStatus.dwServiceSpecificExitCode = 0;
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ServiceStatus.dwCheckPoint = 0;
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if (dwState == SERVICE_START_PENDING ||
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dwState == SERVICE_STOP_PENDING)
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ServiceStatus.dwWaitHint = 1000;
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else
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ServiceStatus.dwWaitHint = 0;
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SetServiceStatus(ServiceStatusHandle,
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&ServiceStatus);
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}
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static DWORD WINAPI
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ServiceControlHandler(DWORD dwControl,
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DWORD dwEventType,
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LPVOID lpEventData,
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LPVOID lpContext)
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{
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switch (dwControl)
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{
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case SERVICE_CONTROL_STOP:
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case SERVICE_CONTROL_SHUTDOWN:
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UpdateServiceStatus(SERVICE_STOP_PENDING);
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if (hStopEvent != NULL)
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SetEvent(hStopEvent);
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return ERROR_SUCCESS;
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case SERVICE_CONTROL_INTERROGATE:
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SetServiceStatus(ServiceStatusHandle,
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&ServiceStatus);
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return ERROR_SUCCESS;
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default:
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return ERROR_CALL_NOT_IMPLEMENTED;
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}
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}
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VOID WINAPI
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ServiceMain(DWORD argc, LPWSTR* argv)
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{
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ServiceStatusHandle = RegisterServiceCtrlHandlerExW(ServiceName,
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ServiceControlHandler,
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NULL);
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if (!ServiceStatusHandle)
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{
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DPRINT1("DHCPCSVC: Unable to register service control handler (%lx)\n", GetLastError());
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return;
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}
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UpdateServiceStatus(SERVICE_START_PENDING);
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/* Create the stop event */
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hStopEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
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if (hStopEvent == NULL)
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{
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UpdateServiceStatus(SERVICE_STOPPED);
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return;
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}
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UpdateServiceStatus(SERVICE_START_PENDING);
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if (!init_client())
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{
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DPRINT1("DHCPCSVC: init_client() failed!\n");
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UpdateServiceStatus(SERVICE_STOPPED);
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return;
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}
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DH_DbgPrint(MID_TRACE,("DHCP Service Started\n"));
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UpdateServiceStatus(SERVICE_RUNNING);
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DH_DbgPrint(MID_TRACE,("Going into dispatch()\n"));
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: DHCP service is starting up\n"));
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dispatch(hStopEvent);
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DH_DbgPrint(MID_TRACE,("DHCPCSVC: DHCP service is shutting down\n"));
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stop_client();
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UpdateServiceStatus(SERVICE_STOPPED);
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}
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BOOL WINAPI
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DllMain(HINSTANCE hinstDLL,
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DWORD fdwReason,
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LPVOID lpvReserved)
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{
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switch (fdwReason)
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{
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case DLL_PROCESS_ATTACH:
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DisableThreadLibraryCalls(hinstDLL);
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break;
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case DLL_PROCESS_DETACH:
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break;
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}
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return TRUE;
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}
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/* EOF */
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