hostent.c File Reference

#include "precomp.h"

Include dependency graph for hostent.c:

Go to the source code of this file.

Functions
PHOSTENT WINAPI	Hostent_Init (IN PVOID *Buffer, IN WORD AddressFamily, IN ULONG AddressSize, IN ULONG AddressCount, IN ULONG AliasCount)
VOID WINAPI	Dns_PtrArrayToOffsetArray (PCHAR *List, ULONG_PTR Base)
VOID WINAPI	Hostent_ConvertToOffsets (IN PHOSTENT Hostent)

Function Documentation

Dns_PtrArrayToOffsetArray()

VOID WINAPI Dns_PtrArrayToOffsetArray	(	PCHAR *	List,
		ULONG_PTR	Base
	)

Definition at line 58 of file hostent.c.

{
    /* Loop every pointer in the list */
    do
    {
        /* Update the pointer */
        *List = (PCHAR)((ULONG_PTR)*List - Base);
    } while(*List++);
}

Referenced by Hostent_ConvertToOffsets().

Hostent_ConvertToOffsets()

VOID WINAPI Hostent_ConvertToOffsets

(

IN PHOSTENT

Hostent

)

Definition at line 71 of file hostent.c.

{
    /* Do we have a name? */
    if (Hostent->h_name)
    {
        /* Update it */
        Hostent->h_name -= (ULONG_PTR)Hostent;
    }
 
    /* Do we have aliases? */
    if (Hostent->h_aliases)
    {
        /* Update the pointer */
        Hostent->h_aliases -= (ULONG_PTR)Hostent;
 
        /* Fix them up */
        Dns_PtrArrayToOffsetArray(Hostent->h_aliases, (ULONG_PTR)Hostent);
    }
 
    /* Do we have addresses? */
    if (Hostent->h_addr_list)
    {
        /* Fix them up */
        Dns_PtrArrayToOffsetArray(Hostent->h_addr_list, (ULONG_PTR)Hostent);
    }
}

Referenced by SaBlob_CreateHostent().

Hostent_Init()

PHOSTENT WINAPI Hostent_Init	(	IN PVOID *	Buffer,
		IN WORD	AddressFamily,
		IN ULONG	AddressSize,
		IN ULONG	AddressCount,
		IN ULONG	AliasCount
	)

Definition at line 17 of file hostent.c.

{
    PHOSTENT Hostent;
    ULONG_PTR BufferPosition = (ULONG_PTR)*Buffer;
 
    /* Align the hostent on the buffer's 4 byte boundary */
    BufferPosition += 3 & ~3;
 
    /* Set up the basic data */
    Hostent = (PHOSTENT)BufferPosition;
    Hostent->h_length = (WORD)AddressSize;
    Hostent->h_addrtype = AddressFamily;
 
    /* Put aliases after Hostent */
    Hostent->h_aliases = (PCHAR*)((ULONG_PTR)(Hostent + 1) & ~3);
 
    /* Zero it out */
    RtlZeroMemory(Hostent->h_aliases, AliasCount * sizeof(PCHAR));
 
    /* Put addresses after aliases */
    Hostent->h_addr_list = (PCHAR*)
                           ((ULONG_PTR)Hostent->h_aliases +
                            (AliasCount * sizeof(PCHAR)) + sizeof(PCHAR));
 
    /* Update the location */
    BufferPosition = (ULONG_PTR)Hostent->h_addr_list +
                     ((AddressCount * sizeof(PCHAR)) + sizeof(PCHAR));
 
    /* Send it back */
    *Buffer = (PVOID)BufferPosition;
 
    /* Return the hostent */
    return Hostent;
}

Referenced by SaBlob_CreateHostent().