ReactOS 0.4.15-dev-8417-gb6b82fe
nslookup.c File Reference
#include "nslookup.h"
#include <winbase.h>
#include <iphlpapi.h>
Include dependency graph for nslookup.c:

Go to the source code of this file.

Functions

void PrintState ()
 
void PrintUsage ()
 
BOOL PerformInternalLookup (PCHAR pAddr, PCHAR pResult)
 
void PerformLookup (PCHAR pAddr)
 
BOOL ParseCommandLine (int argc, char *argv[])
 
void InteractiveMode ()
 
int main (int argc, char *argv[])
 

Variables

STATE State
 
HANDLE ProcessHeap
 
ULONG RequestID
 

Function Documentation

◆ InteractiveMode()

void InteractiveMode ( )

Definition at line 747 of file nslookup.c.

748{
749 _tprintf( _T("Default Server: %s\n"), State.DefaultServer );
750 _tprintf( _T("Address: %s\n\n"), State.DefaultServerAddress );
751
752 /* TODO: Implement interactive mode. */
753
754 _tprintf( _T("ERROR: Feature not implemented.\n") );
755}
#define _tprintf
Definition: tchar.h:506
#define _T(x)
Definition: vfdio.h:22

Referenced by main().

◆ main()

int main ( int argc  ,
char argv[] 
)

Definition at line 757 of file nslookup.c.

758{
759 int i;
761 PFIXED_INFO pNetInfo = NULL;
762 ULONG NetBufLen = 0;
763 WSADATA wsaData;
764 int ret;
765
767 RequestID = 1;
768
769 /* Set up the initial state. */
770 State.debug = FALSE;
771 State.defname = TRUE;
772 State.search = TRUE;
773 State.recurse = TRUE;
774 State.d2 = FALSE;
775 State.vc = FALSE;
776 State.ignoretc = FALSE;
777 State.port = 53;
778 State.type = TypeBoth;
779 State.Class = ClassIN;
780 State.timeout = 2;
781 State.retry = 1;
782 State.MSxfr = TRUE;
783 State.ixfrver = 1;
784
785 RtlZeroMemory( State.root, 256 );
786 RtlZeroMemory( State.domain, 256 );
787 for( i = 0; i < 6; i += 1 ) RtlZeroMemory( State.srchlist[i], 256 );
788 RtlZeroMemory( State.DefaultServer, 256 );
789 RtlZeroMemory( State.DefaultServerAddress, 16 );
790
791 memcpy( State.root, DEFAULT_ROOT, sizeof(DEFAULT_ROOT) );
792
793 /* We don't know how long of a buffer it will want to return. So we'll
794 pass an empty one now and let it fail only once, instead of guessing. */
795 Status = GetNetworkParams( pNetInfo, &NetBufLen );
796
798 {
799 _tprintf( _T("Error in GetNetworkParams call\n") );
800
801 return -2;
802 }
803
804 pNetInfo = (PFIXED_INFO)HeapAlloc( ProcessHeap, 0, NetBufLen );
805 if( pNetInfo == NULL )
806 {
807 _tprintf( _T("ERROR: Out of memory\n") );
808
809 return -1;
810 }
811
812 /* For real this time. */
813 Status = GetNetworkParams( pNetInfo, &NetBufLen );
814 if( Status != NO_ERROR )
815 {
816 _tprintf( _T("Error in GetNetworkParams call\n") );
817
818 HeapFree( ProcessHeap, 0, pNetInfo );
819
820 return -2;
821 }
822
823 strncpy( State.domain, pNetInfo->DomainName, 255 );
824 strncpy( State.srchlist[0], pNetInfo->DomainName, 255 );
825 strncpy( State.DefaultServerAddress,
827 15 );
828
829 HeapFree( ProcessHeap, 0, pNetInfo );
830
831 ret = WSAStartup( MAKEWORD(2, 2), &wsaData );
832 if (ret != 0)
833 {
834 _tprintf( _T("Winsock initialization failed: %d\n"), ret );
835 return ret;
836 }
837
838 switch( ParseCommandLine( argc, argv ) )
839 {
840 case 0:
841 /* This means that it was a /? parameter. */
842 break;
843
844 default:
845 /* Anything else means we enter interactive mode. The only exception
846 to this is when the host to resolve was provided on the command
847 line. */
849 }
850
851 WSACleanup();
852 return 0;
853}
static int argc
Definition: ServiceArgs.c:12
char * strncpy(char *DstString, const char *SrcString, ACPI_SIZE Count)
Definition: utclib.c:427
#define NO_ERROR
Definition: dderror.h:5
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define GetProcessHeap()
Definition: compat.h:736
#define HeapAlloc
Definition: compat.h:733
#define HeapFree(x, y, z)
Definition: compat.h:735
INT WINAPI WSAStartup(IN WORD wVersionRequested, OUT LPWSADATA lpWSAData)
Definition: startup.c:113
Status
Definition: gdiplustypes.h:25
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
DWORD WINAPI GetNetworkParams(PFIXED_INFO pFixedInfo, PULONG pOutBufLen)
struct FIXED_INFO * PFIXED_INFO
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
#define argv
Definition: mplay32.c:18
HANDLE ProcessHeap
Definition: nslookup.c:15
BOOL ParseCommandLine(int argc, char *argv[])
Definition: nslookup.c:462
ULONG RequestID
Definition: nslookup.c:16
void InteractiveMode()
Definition: nslookup.c:747
#define DEFAULT_ROOT
Definition: nslookup.h:63
#define TypeBoth
Definition: nslookup.h:15
#define ClassIN
Definition: nslookup.h:33
IP_ADDR_STRING DnsServerList
Definition: iptypes.h:84
char DomainName[MAX_DOMAIN_NAME_LEN+4]
Definition: iptypes.h:82
char String[4 *4]
Definition: iptypes.h:42
IP_ADDRESS_STRING IpAddress
Definition: iptypes.h:47
#define MAKEWORD(a, b)
Definition: typedefs.h:248
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
uint32_t ULONG
Definition: typedefs.h:59
int ret
#define ERROR_BUFFER_OVERFLOW
Definition: winerror.h:185
int PASCAL FAR WSACleanup(void)
Definition: startup.c:60

◆ ParseCommandLine()

BOOL ParseCommandLine ( int  argc,
char argv[] 
)

Definition at line 462 of file nslookup.c.

463{
464 int i;
465 BOOL NoMoreOptions = FALSE;
467 CHAR AddrToResolve[256];
468 CHAR Server[256];
469
470 RtlZeroMemory( AddrToResolve, 256 );
471 RtlZeroMemory( Server, 256 );
472
473 if( 2 == argc )
474 {
475 /* In the Windows nslookup, usage is only displayed if /? is the only
476 option specified on the command line. */
477 if( !strncmp( "/?", argv[1], 2 ) )
478 {
479 PrintUsage();
480 return 0;
481 }
482 }
483
484 if( argc > 1 )
485 {
486 for( i = 1; i < argc; i += 1 )
487 {
488 if( NoMoreOptions )
489 {
490 strncpy( Server, argv[i], 255 );
491
492 /* Determine which one to resolve. This is based on whether the
493 DNS server provided was an IP or an FQDN. */
494 if( IsValidIP( Server ) )
495 {
496 strncpy( State.DefaultServerAddress, Server, 16 );
497
498 PerformInternalLookup( State.DefaultServerAddress,
499 State.DefaultServer );
500 }
501 else
502 {
503 strncpy( State.DefaultServer, Server, 255 );
504
505 PerformInternalLookup( State.DefaultServer,
506 State.DefaultServerAddress );
507 }
508
509 if( Interactive ) return 1;
510
511 PerformLookup( AddrToResolve );
512
513 return 0;
514 }
515 else
516 {
517 if( !strncmp( "-all", argv[i], 4 ) )
518 {
519 PrintState();
520 }
521 else if( !strncmp( "-type=", argv[i], 6 ) )
522 {
523 if( !strncmp( TypeA, &argv[i][6], strlen( TypeA ) ) )
524 {
525 State.type = TypeA;
526 }
527 else if( !strncmp( TypeAAAA, &argv[i][6], strlen( TypeAAAA ) ) )
528 {
529 State.type = TypeAAAA;
530 }
531 else if( !strncmp( TypeBoth, &argv[i][6], strlen( TypeBoth ) ) )
532 {
533 State.type = TypeBoth;
534 }
535 else if( !strncmp( TypeAny, &argv[i][6], strlen( TypeAny ) ) )
536 {
537 State.type = TypeAny;
538 }
539 else if( !strncmp( TypeCNAME, &argv[i][6], strlen( TypeCNAME ) ) )
540 {
541 State.type = TypeCNAME;
542 }
543 else if( !strncmp( TypeMX, &argv[i][6], strlen( TypeMX ) ) )
544 {
545 State.type = TypeMX;
546 }
547 else if( !strncmp( TypeNS, &argv[i][6], strlen( TypeNS ) ) )
548 {
549 State.type = TypeNS;
550 }
551 else if( !strncmp( TypePTR, &argv[i][6], strlen( TypePTR ) ) )
552 {
553 State.type = TypePTR;
554 }
555 else if( !strncmp( TypeSOA, &argv[i][6], strlen( TypeSOA ) ) )
556 {
557 State.type = TypeSOA;
558 }
559 else if( !strncmp( TypeSRV, &argv[i][6], strlen( TypeSRV ) ) )
560 {
561 State.type = TypeSRV;
562 }
563 else
564 {
565 _tprintf( _T("unknown query type: %s"), &argv[i][6] );
566 }
567 }
568 else if( !strncmp( "-domain=", argv[i], 8 ) )
569 {
570 strcpy( State.domain, &argv[i][8] );
571 }
572 else if( !strncmp( "-srchlist=", argv[i], 10 ) )
573 {
574 }
575 else if( !strncmp( "-root=", argv[i], 6 ) )
576 {
577 strcpy( State.root, &argv[i][6] );
578 }
579 else if( !strncmp( "-retry=", argv[i], 7 ) )
580 {
581 }
582 else if( !strncmp( "-timeout=", argv[i], 9 ) )
583 {
584 }
585 else if( !strncmp( "-querytype=", argv[i], 11 ) )
586 {
587 if( !strncmp( TypeA, &argv[i][11], strlen( TypeA ) ) )
588 {
589 State.type = TypeA;
590 }
591 else if( !strncmp( TypeAAAA, &argv[i][11], strlen( TypeAAAA ) ) )
592 {
593 State.type = TypeAAAA;
594 }
595 else if( !strncmp( TypeBoth, &argv[i][11], strlen( TypeBoth ) ) )
596 {
597 State.type = TypeBoth;
598 }
599 else if( !strncmp( TypeAny, &argv[i][11], strlen( TypeAny ) ) )
600 {
601 State.type = TypeAny;
602 }
603 else if( !strncmp( TypeCNAME, &argv[i][11], strlen( TypeCNAME ) ) )
604 {
605 State.type = TypeCNAME;
606 }
607 else if( !strncmp( TypeMX, &argv[i][11], strlen( TypeMX ) ) )
608 {
609 State.type = TypeMX;
610 }
611 else if( !strncmp( TypeNS, &argv[i][11], strlen( TypeNS ) ) )
612 {
613 State.type = TypeNS;
614 }
615 else if( !strncmp( TypePTR, &argv[i][11], strlen( TypePTR ) ) )
616 {
617 State.type = TypePTR;
618 }
619 else if( !strncmp( TypeSOA, &argv[i][11], strlen( TypeSOA ) ) )
620 {
621 State.type = TypeSOA;
622 }
623 else if( !strncmp( TypeSRV, &argv[i][11], strlen( TypeSRV ) ) )
624 {
625 State.type = TypeSRV;
626 }
627 else
628 {
629 _tprintf( _T("unknown query type: %s"), &argv[i][6] );
630 }
631 }
632 else if( !strncmp( "-class=", argv[i], 7 ) )
633 {
634 if( !strncmp( ClassIN, &argv[i][7], strlen( ClassIN ) ) )
635 {
636 State.Class = ClassIN;
637 }
638 else if( !strncmp( ClassAny, &argv[i][7], strlen( ClassAny ) ) )
639 {
640 State.Class = ClassAny;
641 }
642 else
643 {
644 _tprintf( _T("unknown query class: %s"), &argv[i][7] );
645 }
646 }
647 else if( !strncmp( "-ixfrver=", argv[i], 9 ) )
648 {
649 }
650 else if( !strncmp( "-debug", argv[i], 6 ) )
651 {
652 State.debug = TRUE;
653 }
654 else if( !strncmp( "-nodebug", argv[i], 8 ) )
655 {
656 State.debug = FALSE;
657 State.d2 = FALSE;
658 }
659 else if( !strncmp( "-d2", argv[i], 3 ) )
660 {
661 State.d2 = TRUE;
662 State.debug = TRUE;
663 }
664 else if( !strncmp( "-nod2", argv[i], 5 ) )
665 {
666 if( State.debug ) _tprintf( _T("d2 mode disabled; still in debug mode\n") );
667
668 State.d2 = FALSE;
669 }
670 else if( !strncmp( "-defname", argv[i], 8 ) )
671 {
672 State.defname = TRUE;
673 }
674 else if( !strncmp( "-noddefname", argv[i], 10 ) )
675 {
676 State.defname = FALSE;
677 }
678 else if( !strncmp( "-recurse", argv[i], 8 ) )
679 {
680 State.recurse = TRUE;
681 }
682 else if( !strncmp( "-norecurse", argv[i], 10 ) )
683 {
684 State.recurse = FALSE;
685 }
686 else if( !strncmp( "-search", argv[i], 7 ) )
687 {
688 State.search = TRUE;
689 }
690 else if( !strncmp( "-nosearch", argv[i], 9 ) )
691 {
692 State.search = FALSE;
693 }
694 else if( !strncmp( "-vc", argv[i], 3 ) )
695 {
696 State.vc = TRUE;
697 }
698 else if( !strncmp( "-novc", argv[i], 5 ) )
699 {
700 State.vc = FALSE;
701 }
702 else if( !strncmp( "-msxfr", argv[i], 6 ) )
703 {
704 State.MSxfr = TRUE;
705 }
706 else if( !strncmp( "-nomsxfr", argv[i], 8 ) )
707 {
708 State.MSxfr = FALSE;
709 }
710 else if( !strncmp( "-", argv[i], 1 ) && (strlen( argv[i] ) == 1) )
711 {
712 /* Since we received just the plain - switch, we are going
713 to be entering interactive mode. We also will not be
714 parsing any more options. */
715 NoMoreOptions = TRUE;
717 }
718 else
719 {
720 /* Grab the address to resolve. No more options accepted
721 past this point. */
722 strncpy( AddrToResolve, argv[i], 255 );
723 NoMoreOptions = TRUE;
724 }
725 }
726 }
727
728 if( NoMoreOptions && !Interactive )
729 {
730 /* Get the FQDN of the DNS server. */
731 PerformInternalLookup( State.DefaultServerAddress,
732 State.DefaultServer );
733
734 PerformLookup( AddrToResolve );
735
736 return 0;
737 }
738 }
739
740 /* Get the FQDN of the DNS server. */
741 PerformInternalLookup( State.DefaultServerAddress,
742 State.DefaultServer );
743
744 return 1;
745}
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
int strncmp(const char *String1, const char *String2, ACPI_SIZE Count)
Definition: utclib.c:534
char * strcpy(char *DstString, const char *SrcString)
Definition: utclib.c:388
unsigned int BOOL
Definition: ntddk_ex.h:94
void PrintState()
Definition: nslookup.c:18
void PrintUsage()
Definition: nslookup.c:68
BOOL PerformInternalLookup(PCHAR pAddr, PCHAR pResult)
Definition: nslookup.c:79
void PerformLookup(PCHAR pAddr)
Definition: nslookup.c:236
#define TypeMX
Definition: nslookup.h:18
#define TypePTR
Definition: nslookup.h:20
#define TypeAAAA
Definition: nslookup.h:14
#define ClassAny
Definition: nslookup.h:34
#define TypeSRV
Definition: nslookup.h:22
#define TypeNS
Definition: nslookup.h:19
#define TypeAny
Definition: nslookup.h:16
BOOL IsValidIP(PCHAR pInput)
Definition: utility.c:306
#define TypeCNAME
Definition: nslookup.h:17
#define TypeA
Definition: nslookup.h:13
#define TypeSOA
Definition: nslookup.h:21
@ Interactive
Definition: ntsecapi.h:289
static void Server(int port)
Definition: srltest.c:69
char CHAR
Definition: xmlstorage.h:175

Referenced by main().

◆ PerformInternalLookup()

BOOL PerformInternalLookup ( PCHAR  pAddr,
PCHAR  pResult 
)

Definition at line 79 of file nslookup.c.

80{
81 /* Needed to issue DNS packets and parse them. */
82 PCHAR Buffer = NULL, RecBuffer = NULL;
83 CHAR pResolve[256];
84 ULONG BufferLength = 0, RecBufferLength = 512;
85 int i = 0, j = 0, k = 0, d = 0;
86 BOOL bOk = FALSE;
87
88 /* Makes things easier when parsing the response packet. */
89 USHORT NumQuestions;
91
92 if( (strlen( pAddr ) + 1) > 255 ) return FALSE;
93
94 Type = TYPE_A;
95 if( IsValidIP( pAddr ) ) Type = TYPE_PTR;
96
97 /* If it's a PTR lookup then append the ARPA sig to the end. */
98 if( Type == TYPE_PTR )
99 {
100 ReverseIP( pAddr, pResolve );
101 strcat( pResolve, ARPA_SIG );
102 }
103 else
104 {
105 strcpy( pResolve, pAddr );
106 }
107
108 /* Base header length + length of QNAME + length of QTYPE and QCLASS */
109 BufferLength = 12 + (strlen( pResolve ) + 2) + 4;
110
111 /* Allocate memory for the buffer. */
113 if( !Buffer )
114 {
115 _tprintf( _T("ERROR: Out of memory\n") );
116 goto cleanup;
117 }
118
119 /* Allocate the receiving buffer. */
120 RecBuffer = HeapAlloc( ProcessHeap, 0, RecBufferLength );
121 if( !RecBuffer )
122 {
123 _tprintf( _T("ERROR: Out of memory\n") );
124 goto cleanup;
125 }
126
127 /* Insert the ID field. */
128 ((PSHORT)&Buffer[i])[0] = htons( RequestID );
129 i += 2;
130
131 /* Bits 0-7 of the second 16 are all 0, except for when recursion is
132 desired. */
133 Buffer[i] = 0x00;
134 if( State.recurse) Buffer[i] |= 0x01;
135 i += 1;
136
137 /* Bits 8-15 of the second 16 are 0 for a query. */
138 Buffer[i] = 0x00;
139 i += 1;
140
141 /* Only 1 question. */
142 ((PSHORT)&Buffer[i])[0] = htons( 1 );
143 i += 2;
144
145 /* We aren't sending a response, so 0 out the rest of the header. */
146 Buffer[i] = 0x00;
147 Buffer[i + 1] = 0x00;
148 Buffer[i + 2] = 0x00;
149 Buffer[i + 3] = 0x00;
150 Buffer[i + 4] = 0x00;
151 Buffer[i + 5] = 0x00;
152 i += 6;
153
154 /* Walk through the query address. Split each section delimited by '.'.
155 Format of the QNAME section is length|data, etc. Last one is null */
156 j = i;
157 i += 1;
158
159 for( k = 0; k < strlen( pResolve ); k += 1 )
160 {
161 if( pResolve[k] != '.' )
162 {
163 Buffer[i] = pResolve[k];
164 i += 1;
165 }
166 else
167 {
168 Buffer[j] = (i - j) - 1;
169 j = i;
170 i += 1;
171 }
172 }
173
174 Buffer[j] = (i - j) - 1;
175 Buffer[i] = 0x00;
176 i += 1;
177
178 /* QTYPE */
179 ((PSHORT)&Buffer[i])[0] = htons( Type );
180 i += 2;
181
182 /* QCLASS */
183 ((PSHORT)&Buffer[i])[0] = htons( CLASS_IN );
184
185 /* Ship the request off to the DNS server. */
186 bOk = SendRequest( Buffer,
188 RecBuffer,
189 &RecBufferLength );
190 if( !bOk ) goto cleanup;
191
192 /* Start parsing the received packet. */
193 NumQuestions = ntohs( ((PSHORT)&RecBuffer[4])[0] );
194
195 k = 12;
196
197 /* We don't care about the questions section, blow through it. */
198 if( NumQuestions )
199 {
200 for( i = 0; i < NumQuestions; i += 1 )
201 {
202 /* Quick way to skip the domain name section. */
203 k += ExtractName( RecBuffer, pResult, k, 0 );
204 k += 4;
205 }
206 }
207
208 /* Skip the answer name. */
209 k += ExtractName( RecBuffer, pResult, k, 0 );
210
211 Type = ntohs( ((PUSHORT)&RecBuffer[k])[0] );
212 k += 8;
213
214 d = ntohs( ((PUSHORT)&RecBuffer[k])[0] );
215 k += 2;
216
217 if( TYPE_PTR == Type )
218 {
219 k += ExtractName( RecBuffer, pResult, k, d );
220 }
221 else if( TYPE_A == Type )
222 {
223 k += ExtractIP( RecBuffer, pResult, k );
224 }
225
226cleanup:
227 /* Free memory. */
228 if( Buffer ) HeapFree( ProcessHeap, 0, Buffer );
229 if( RecBuffer ) HeapFree( ProcessHeap, 0, RecBuffer );
230
231 RequestID += 1;
232
233 return bOk;
234}
Type
Definition: Type.h:7
char * strcat(char *DstString, const char *SrcString)
Definition: utclib.c:568
Definition: bufpool.h:45
static void cleanup(void)
Definition: main.c:1335
#define TYPE_A
Definition: ftp_var.h:36
PWDF_CHILD_ADDRESS_DESCRIPTION_HEADER pAddr
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
#define d
Definition: ke_i.h:81
#define htons(x)
Definition: module.h:215
#define ntohs(x)
Definition: module.h:210
int k
Definition: mpi.c:3369
#define TYPE_PTR
Definition: nslookup.h:29
int ExtractIP(PCHAR pBuffer, PCHAR pOutput, USHORT Offset)
Definition: utility.c:397
#define CLASS_IN
Definition: nslookup.h:36
BOOL SendRequest(PCHAR pInBuffer, ULONG InBufferLength, PCHAR pOutBuffer, PULONG pOutBufferLength)
Definition: utility.c:11
void ReverseIP(PCHAR pIP, PCHAR pReturn)
Definition: utility.c:249
int ExtractName(PCHAR pBuffer, PCHAR pOutput, USHORT Offset, UCHAR Limit)
Definition: utility.c:343
#define ARPA_SIG
Definition: nslookup.h:64
unsigned short USHORT
Definition: pedump.c:61
int16_t * PSHORT
Definition: typedefs.h:55
uint16_t * PUSHORT
Definition: typedefs.h:56
char * PCHAR
Definition: typedefs.h:51
_Must_inspect_result_ _In_ WDFDEVICE _In_ DEVICE_REGISTRY_PROPERTY _In_ ULONG BufferLength
Definition: wdfdevice.h:3771

Referenced by ParseCommandLine().

◆ PerformLookup()

void PerformLookup ( PCHAR  pAddr)

Definition at line 236 of file nslookup.c.

237{
238 /* Needed to issue DNS packets and parse them. */
239 PCHAR Buffer = NULL, RecBuffer = NULL;
240 CHAR pResolve[256];
241 CHAR pResult[256];
242 ULONG BufferLength = 0, RecBufferLength = 512;
243 int i = 0, j = 0, k = 0, d = 0;
244 BOOL bOk = FALSE;
245
246 /* Makes things easier when parsing the response packet. */
247 UCHAR Header2;
248 USHORT NumQuestions;
249 USHORT NumAnswers;
250 USHORT NumAuthority;
251 USHORT Type;
252
253 if( (strlen( pAddr ) + 1) > 255 ) return;
254
255 _tprintf( _T("Server: %s\n"), State.DefaultServer );
256 _tprintf( _T("Address: %s\n\n"), State.DefaultServerAddress );
257
258 if( !strcmp( TypeA, State.type )
259 || !strcmp( TypeAAAA, State.type )
260 || !strcmp( TypeBoth, State.type ) )
261 {
262 Type = TYPE_A;
263 if( IsValidIP( pAddr ) ) Type = TYPE_PTR;
264 }
265 else
266 Type = TypeNametoTypeID( State.type );
267
268 /* If it's a PTR lookup then append the ARPA sig to the end. */
269 if( (Type == TYPE_PTR) && IsValidIP( pAddr ) )
270 {
271 ReverseIP( pAddr, pResolve );
272 strcat( pResolve, ARPA_SIG );
273 }
274 else
275 {
276 strcpy( pResolve, pAddr );
277 }
278
279 /* Base header length + length of QNAME + length of QTYPE and QCLASS */
280 BufferLength = 12 + (strlen( pResolve ) + 2) + 4;
281
282 /* Allocate memory for the buffer. */
284 if( !Buffer )
285 {
286 _tprintf( _T("ERROR: Out of memory\n") );
287 goto cleanup;
288 }
289
290 /* Allocate memory for the return buffer. */
291 RecBuffer = HeapAlloc( ProcessHeap, 0, RecBufferLength );
292 if( !RecBuffer )
293 {
294 _tprintf( _T("ERROR: Out of memory\n") );
295 goto cleanup;
296 }
297
298 /* Insert the ID field. */
299 ((PSHORT)&Buffer[i])[0] = htons( RequestID );
300 i += 2;
301
302 /* Bits 0-7 of the second 16 are all 0, except for when recursion is
303 desired. */
304 Buffer[i] = 0x00;
305 if( State.recurse) Buffer[i] |= 0x01;
306 i += 1;
307
308 /* Bits 8-15 of the second 16 are 0 for a query. */
309 Buffer[i] = 0x00;
310 i += 1;
311
312 /* Only 1 question. */
313 ((PSHORT)&Buffer[i])[0] = htons( 1 );
314 i += 2;
315
316 /* We aren't sending a response, so 0 out the rest of the header. */
317 Buffer[i] = 0x00;
318 Buffer[i + 1] = 0x00;
319 Buffer[i + 2] = 0x00;
320 Buffer[i + 3] = 0x00;
321 Buffer[i + 4] = 0x00;
322 Buffer[i + 5] = 0x00;
323 i += 6;
324
325 /* Walk through the query address. Split each section delimited by '.'.
326 Format of the QNAME section is length|data, etc. Last one is null */
327 j = i;
328 i += 1;
329
330 for( k = 0; k < strlen( pResolve ); k += 1 )
331 {
332 if( pResolve[k] != '.' )
333 {
334 Buffer[i] = pResolve[k];
335 i += 1;
336 }
337 else
338 {
339 Buffer[j] = (i - j) - 1;
340 j = i;
341 i += 1;
342 }
343 }
344
345 Buffer[j] = (i - j) - 1;
346 Buffer[i] = 0x00;
347 i += 1;
348
349 /* QTYPE */
350 ((PSHORT)&Buffer[i])[0] = htons( Type );
351 i += 2;
352
353 /* QCLASS */
354 ((PSHORT)&Buffer[i])[0] = htons( ClassNametoClassID( State.Class ) );
355
356 /* Ship off the request to the DNS server. */
357 bOk = SendRequest( Buffer,
359 RecBuffer,
360 &RecBufferLength );
361 if( !bOk ) goto cleanup;
362
363 /* Start parsing the received packet. */
364 Header2 = RecBuffer[3];
365 NumQuestions = ntohs( ((PSHORT)&RecBuffer[4])[0] );
366 NumAnswers = ntohs( ((PSHORT)&RecBuffer[6])[0] );
367 NumAuthority = ntohs( ((PUSHORT)&RecBuffer[8])[0] );
368 Type = 0;
369
370 /* Check the RCODE for failure. */
371 d = Header2 & 0x0F;
372 if( d != RCODE_NOERROR )
373 {
374 switch( d )
375 {
376 case RCODE_NXDOMAIN:
377 _tprintf( _T("*** %s can't find %s: Non-existant domain\n"), State.DefaultServer, pAddr );
378 break;
379
380 case RCODE_REFUSED:
381 _tprintf( _T("*** %s can't find %s: Query refused\n"), State.DefaultServer, pAddr );
382 break;
383
384 default:
385 _tprintf( _T("*** %s can't find %s: Unknown RCODE\n"), State.DefaultServer, pAddr );
386 }
387
388 goto cleanup;
389 }
390
391 k = 12;
392
393 if( NumQuestions )
394 {
395 /* Blow through the questions section since we don't care about it. */
396 for( i = 0; i < NumQuestions; i += 1 )
397 {
398 k += ExtractName( RecBuffer, pResult, k, 0 );
399 k += 4;
400 }
401 }
402
403 if( NumAnswers )
404 {
405 /* Skip the name. */
406 k += ExtractName( RecBuffer, pResult, k, 0 );
407
408 Type = ntohs( ((PUSHORT)&RecBuffer[k])[0] );
409 k += 8;
410
411 d = ntohs( ((PUSHORT)&RecBuffer[k])[0] );
412 k += 2;
413
414 if( TYPE_PTR == Type )
415 {
416 k += ExtractName( RecBuffer, pResult, k, d );
417 }
418 else if( TYPE_A == Type )
419 {
420 k += ExtractIP( RecBuffer, pResult, k );
421 }
422 }
423
424 /* FIXME: This'll need to support more than PTR and A at some point. */
425 if( !strcmp( State.type, TypePTR ) )
426 {
427 if( TYPE_PTR == Type )
428 {
429 _tprintf( _T("%s name = %s\n"), pResolve, pResult );
430 }
431 else
432 {
433 }
434 }
435 else if( !strcmp( State.type, TypeA )
436 || !strcmp( State.type, TypeAAAA )
437 || !strcmp( State.type, TypeBoth ) )
438 {
439 if( (TYPE_A == Type) /*|| (TYPE_AAAA == Type)*/ )
440 {
441 if( 0 == NumAuthority )
442 _tprintf( _T("Non-authoritative answer:\n") );
443
444 _tprintf( _T("Name: %s\n"), pAddr );
445 _tprintf( _T("Address: %s\n\n"), pResult );
446 }
447 else
448 {
449 _tprintf( _T("Name: %s\n"), pResult );
450 _tprintf( _T("Address: %s\n\n"), pAddr );
451 }
452 }
453
454cleanup:
455 /* Free memory. */
456 if( Buffer ) HeapFree( ProcessHeap, 0, Buffer );
457 if( RecBuffer ) HeapFree( ProcessHeap, 0, RecBuffer );
458
459 RequestID += 1;
460}
int strcmp(const char *String1, const char *String2)
Definition: utclib.c:469
USHORT ClassNametoClassID(PCHAR ClassName)
Definition: utility.c:848
#define RCODE_NOERROR
Definition: nslookup.h:48
#define RCODE_REFUSED
Definition: nslookup.h:53
USHORT TypeNametoTypeID(PCHAR TypeName)
Definition: utility.c:819
#define RCODE_NXDOMAIN
Definition: nslookup.h:51
unsigned char UCHAR
Definition: xmlstorage.h:181

Referenced by ParseCommandLine().

◆ PrintState()

void PrintState ( )

Definition at line 18 of file nslookup.c.

19{
20 _tprintf( _T("Default Server: (null)\n\n") );
21 _tprintf( _T("Set options:\n") );
22
23 _tprintf( _T(" ") );
24 if( !State.debug ) _tprintf( _T("no") );
25 _tprintf( _T("debug\n") );
26
27 _tprintf( _T(" ") );
28 if( !State.defname ) _tprintf( _T("no") );
29 _tprintf( _T("defname\n") );
30
31 _tprintf( _T(" ") );
32 if( !State.search ) _tprintf( _T("no") );
33 _tprintf( _T("search\n") );
34
35 _tprintf( _T(" ") );
36 if( !State.recurse ) _tprintf( _T("no") );
37 _tprintf( _T("recurse\n") );
38
39 _tprintf( _T(" ") );
40 if( !State.d2 ) _tprintf( _T("no") );
41 _tprintf( _T("d2\n") );
42
43 _tprintf( _T(" ") );
44 if( !State.vc ) _tprintf( _T("no") );
45 _tprintf( _T("vc\n") );
46
47 _tprintf( _T(" ") );
48 if( !State.ignoretc ) _tprintf( _T("no") );
49 _tprintf( _T("ignoretc\n") );
50
51 _tprintf( _T(" port=%d\n"), State.port );
52 _tprintf( _T(" type=%s\n"), State.type );
53 _tprintf( _T(" class=%s\n"), State.Class );
54 _tprintf( _T(" timeout=%d\n"), (int)State.timeout );
55 _tprintf( _T(" retry=%d\n"), (int)State.retry );
56 _tprintf( _T(" root=%s\n"), State.root );
57 _tprintf( _T(" domain=%s\n"), State.domain );
58
59 _tprintf( _T(" ") );
60 if( !State.MSxfr ) _tprintf( _T("no") );
61 _tprintf( _T("MSxfr\n") );
62
63 _tprintf( _T(" IXFRversion=%d\n"), (int)State.ixfrver );
64
65 _tprintf( _T(" srchlist=%s\n\n"), State.srchlist[0] );
66}

Referenced by ParseCommandLine().

◆ PrintUsage()

void PrintUsage ( void  )

Definition at line 68 of file nslookup.c.

69{
70 _tprintf( _T("Usage:\n"
71 " nslookup [-opt ...] # interactive mode using"
72 " default server\n nslookup [-opt ...] - server #"
73 " interactive mode using 'server'\n nslookup [-opt ...]"
74 " host # just look up 'host' using default server\n"
75 " nslookup [-opt ...] host server # just look up 'host'"
76 " using 'server'\n") );
77}

Referenced by _tmain(), DirtyMain(), FsInfoMain(), HardLinkMain(), main(), ParseCommandLine(), and VolumeMain().

Variable Documentation

◆ ProcessHeap

HANDLE ProcessHeap
  • Internal Headers *‍/

Definition at line 15 of file nslookup.c.

Referenced by main(), PerformInternalLookup(), and PerformLookup().

◆ RequestID

ULONG RequestID

Definition at line 16 of file nslookup.c.

Referenced by main(), PerformInternalLookup(), PerformLookup(), PrintD2(), and SendRequest().

◆ State

Definition at line 14 of file nslookup.c.