343 lines
8.1 KiB
C
343 lines
8.1 KiB
C
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#ifndef _NMSMSGF_
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#define _NMSMSGF_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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nmsmsgf.h
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Abstract:
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This is the header file to be used for calling nmsmsgf.c functions
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Functions:
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Portability:
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This header is portable.
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Author:
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Pradeep Bahl (PradeepB) Jan-1993
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Revision History:
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Modification Date Person Description of Modification
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------------------ ------- ---------------------------
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--*/
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/*
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includes
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*/
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#include "wins.h"
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#include "comm.h"
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#include "assoc.h"
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#include "nmsdb.h"
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/*
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defines
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*/
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//
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// Max. length of name in an RFC packet
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//
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#define NMSMSGF_RFC_MAX_NAM_LEN NMSDB_MAX_NAM_LEN
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/*
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macros
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*/
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//
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// Inserts an IP address in an RFC pkt
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//
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#define NMSMSGF_INSERT_IPADD_M(pTmpB, IPAdd) \
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{ \
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*(pTmpB)++ = (BYTE)((IPAdd) >> 24); \
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*(pTmpB)++ = (BYTE)(((IPAdd) >> 16) % 256);\
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*(pTmpB)++ = (BYTE)(((IPAdd) >> 8) % 256); \
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*(pTmpB)++ = (BYTE)((IPAdd) % 256); \
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}
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//
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// Currently IP addresses are same length as ULONG. When that changes
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// change this macro
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//
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FUTURES("Change when sizeof(COMM_IP_ADD_T) != sizeof(ULONG)")
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#define NMSMSGF_INSERT_ULONG_M(pTmpB, x) NMSMSGF_INSERT_IPADD_M(pTmpB, x)
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//
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// Retrieves an IP address from an RFC pkt
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//
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#define NMSMSGF_RETRIEVE_IPADD_M(pTmpB, IPAdd) \
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{ \
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(IPAdd) = *(pTmpB)++ << 24; \
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(IPAdd) |= *(pTmpB)++ << 16; \
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(IPAdd) |= *(pTmpB)++ << 8; \
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(IPAdd) |= *(pTmpB)++; \
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}
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//
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// Currently IP addresses are same length as ULONG. When that changes
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// change this macro
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//
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FUTURES("Change when sizeof(COMM_IP_ADD_T) != sizeof(ULONG)")
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#define NMSMSGF_RETRIEVE_ULONG_M(pTmpB, x) NMSMSGF_RETRIEVE_IPADD_M(pTmpB, x)
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//
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// Max number of multihomed addresses
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//
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#define NMSMSGF_MAX_NO_MULTIH_ADDS NMSDB_MAX_MEMS_IN_GRP
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//
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// Used for swapping bytes (to support the browser)
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//
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#define NMSMSGF_MODIFY_NAME_IF_REQD_M(pName) \
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{ \
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if (*((pName) + 15) == 0x1B) \
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{ \
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WINS_SWAP_BYTES_M((pName), (pName) + 15);\
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} \
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}
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/*
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externs
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*/
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/*
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typedef definitions
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*/
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/*
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NMSMSGF_ERR_CODE_E - The various Rcode values returned in responses to
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the various name requests received.
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Note: CFT_ERR is never returned in a negative name release response.
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ACT_ERR code in a negative name release response means that the
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WINS server will not allow a node to release the name owned by another
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node.o
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*/
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typedef enum _NMSMSGF_ERR_CODE_E {
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NMSMSGF_E_SUCCESS = 0, //Success
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NMSMSGF_E_FMT_ERR = 1, //Format error. Req. was invalidly formatted
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NMSMSGF_E_SRV_ERR = 2, //Server failure. Problem with WINS. Can not
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//service name
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CHECK("Check this one out. Would WINS ever return this ?")
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NMSMSGF_E_NAM_ERR = 3, //Name does not exist in the directory
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NMSMSGF_E_IMP_ERR = 4, //Unsupported req. error. Allowable only for
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//challenging NBNS when gets an Update type
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//registration request
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NMSMSGF_E_RFS_ERR = 5, //Refused error. For policy reasons WINS
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//will not register this namei from this host
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NMSMSGF_E_ACT_ERR = 6, //Active error. Name is owned by another node
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NMSMSGF_E_CFT_ERR = 7 //Name in conflict error. A unique name is
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//owned by more than one node
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} NMSMSGF_ERR_CODE_E, *PNMSMSGF_ERR_CODE_E;
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/*
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NMSMSGF_NODE_TYP_E -- Node type of node that sent the name registration
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message
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Values assigned to the enumrators are those specified in RFC 1002
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Bnode value will be set by Proxy
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NOTE NOTE NOTE
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WINS will never get a registration from a B node since we decided
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that B node registrations will not be passed to WINS by the
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proxy.
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*/
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typedef enum _NMSMSGF_NODE_TYP_E {
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NMSMSGF_E_BNODE = 0, //RFC 1002 specified value
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NMSMSGF_E_PNODE = 1, // RFC 1002 specified value
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NMSMSGF_E_MODE = 2 //RFC 1002 specified value
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} NMSMSGF_NODE_TYP_E, *PNMSMSGF_NODE_TYP_E;
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//
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// Information required to send a response to an NBT node
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//
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typedef struct _NMSMSGF_RSP_INFO_T {
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NMSMSGF_ERR_CODE_E Rcode_e;
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MSG_T pMsg;
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MSG_LEN_T MsgLen;
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PNMSDB_NODE_ADDS_T pNodeAdds;
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DWORD QuesNamSecLen;
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NMSMSGF_NODE_TYP_E NodeTyp_e;
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BYTE EntTyp;
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DWORD RefreshInterval;
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} NMSMSGF_RSP_INFO_T, *PNMSMSGF_RSP_INFO_T;
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/*
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NMSMSGF_NAM_REQ_TYP_E
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Type of name request that the WINS deals with
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Values assigned to the enumrators are those specified in RFC 1002
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Used by NmsProcNbtReq and NmsNmhNamRegRsp.
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*/
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CHECK("RFC 1002 is inconsistent in its specification of the opcode for ")
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CHECK("Name Refresh. AT one place it specifies 8 and at another 9")
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CHECK("8 seems more likely since it follows in sequeence to the value")
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CHECK("for WACK")
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typedef enum _NMSMSGF_NAM_REQ_TYP_E {
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NMSMSGF_E_NAM_QUERY = 0,
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NMSMSGF_E_NAM_REG = 5,
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NMSMSGF_E_NAM_REL = 6,
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NMSMSGF_E_NAM_WACK = 7,
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NMSMSGF_E_NAM_REF = 8, /*RFC 1002 specifies 8 and 9.Which one is
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*correct (page 9 and page 15)?
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*/
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NMSMSGF_E_NAM_REF_UB = 9, //Netbt in Daytona release will use 9 for
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//compatibility with UB NBNS. So, I
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//need to support this too
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NMSMSGF_E_MULTIH_REG = 0xF, //not in RFC. For supporting multi-homed
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//hosts
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NMSMSGF_E_INV_REQ = 10 // invalid name request
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} NMSMSGF_NAM_REQ_TYP_E, *PNMSMSGF_NAM_REQ_TYP_E;
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//
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// Counted array of addresses. The array size is big enough to hold the
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// max. number of addresses that can be sent in a UDP packet.
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//
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// We need to get all the addresses when a query response is received
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// by WINS (to a challenge). This is so that it can handle mh nodes
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// with > 25 addresses.
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//
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// Since a UDP packet can not be > 512, assuming a name size of 16 (32 bytes
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// encoded), the packet size apart from Ip address is around 60. So the
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// max. number of addresses there can be is (512-60 - 2)/4 = around 112.
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//
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//#define NMSMSGF_MAX_ADDRESSES_IN_UDP_PKT 100
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//
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// We will never take more than 25 addresses from a packet. Netbt will also
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// never send more than 25. Even if it does, we will stop at the 26th address
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// The count is being kept at 25 so as to avoid a buffer overflow problem
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// in NmsMsgfUfmNamRsp.
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//
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// If the max name size is used - 255 and using 60 bytes for the other contents\// of the packet, we have (512-315 -2 = 195 bytes for the ip address). This
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// will accept 195/4 = around 48 addresses. No chance for overflow when we
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// use a limit of 25.
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//
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#define NMSMSGF_MAX_ADDRESSES_IN_UDP_PKT 25
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FUTURES("when we start supportng tcp connections. this array size may not")
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FUTURES("be sufficient")
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typedef struct _NMSMSGF_CNT_ADD_T {
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DWORD NoOfAdds;
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COMM_ADD_T Add[NMSMSGF_MAX_ADDRESSES_IN_UDP_PKT];
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} NMSMSGF_CNT_ADD_T, *PNMSMSGF_CNT_ADD_T;
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/*
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function definitions
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*/
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extern
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STATUS
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NmsMsgfProcNbtReq(
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PCOMM_HDL_T pDlgHdl,
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MSG_T pMsg,
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MSG_LEN_T MsgLen
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);
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extern
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STATUS
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NmsMsgfFrmNamRspMsg(
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PCOMM_HDL_T pDlgHdl,
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NMSMSGF_NAM_REQ_TYP_E NamRspTyp_e,
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PNMSMSGF_RSP_INFO_T pRspInfo
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);
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extern
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VOID
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NmsMsgfFrmNamQueryReq(
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IN DWORD TransId,
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IN MSG_T pMsg,
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OUT PMSG_LEN_T pMsgLen,
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IN LPBYTE pNameToFormat,
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IN DWORD NameLen
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);
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extern
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VOID
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NmsMsgfFrmNamRelReq(
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IN DWORD TransId,
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IN MSG_T pMsg,
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OUT PMSG_LEN_T pMsgLen,
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IN LPBYTE pNameToFormat,
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IN DWORD NameLen,
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IN NMSMSGF_NODE_TYP_E NodeTyp_e,
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IN PCOMM_ADD_T pNodeAdd
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);
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extern
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STATUS
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NmsMsgfFrmNamRegReq(
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IN DWORD TransId,
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IN MSG_T pMsg,
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OUT PMSG_LEN_T pMsgLen,
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IN LPBYTE pNameToFormat,
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IN DWORD NameLen,
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IN NMSMSGF_NODE_TYP_E NodeTyp_e,
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IN PCOMM_ADD_T pNodeAdd
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);
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extern
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VOID
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NmsMsgfFrmWACK(
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IN LPBYTE Buff,
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OUT LPDWORD pBuffLen,
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IN MSG_T pMsg,
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IN DWORD QuesSecNamLen,
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IN DWORD TTL
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);
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extern
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STATUS
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NmsMsgfUfmNamRsp(
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IN LPBYTE pMsg,
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OUT PNMSMSGF_NAM_REQ_TYP_E pOpcode_e,
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OUT LPDWORD pTransId,
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OUT LPBYTE pName,
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OUT LPDWORD pNameLen,
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OUT PNMSMSGF_CNT_ADD_T pCntAdd,
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OUT PNMSMSGF_ERR_CODE_E pRcode_e,
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OUT PBOOL fGroup
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);
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extern
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VOID
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NmsMsgfSndNamRsp(
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PCOMM_HDL_T pDlgHdl,
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LPBYTE pMsg,
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DWORD MsgLen,
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DWORD BlockOfReq
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);
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#ifdef __cplusplus
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}
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#endif
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#endif //_NMSMSGF_
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