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Updated documentation

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This commit is contained in:
Carsten Sonne Larsen
2016-03-05 11:31:07 +01:00
parent 8d0262b446
commit df4531fda7
12 changed files with 204 additions and 355 deletions
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$Id: CHANGES,v 1.26 2004/07/08 08:19:58 mavetju Exp $
Version 1.9:
- With the rollout of IPv6 for a.root-servers.net, it always
took the IPv6 address even if you used the -4 option.
- Fix false lame server issues with domains which have the
higher domain in it (command.com for example).
Version 1.8.1:
- Put back timeout command line parameter, it will be the
maximum time to wait instead of an increasing one.
Version 1.8:
- Better handling of timeout (instead of a static value,
start with five seconds and double it each retry)
- Warnings are printed if you receive a different RR type
than the one you asked for (for example when you ask for
an A record and receive a CNAME)
- Fixed problems when records received in the authority
field are shorter than the domain the nameserver is
authoritative for.
- When compiled without IPv6 support on an IPv6 capable
machine the machine tried to query the IPv6 translated
IPv5 address anyway.
- -C caches hosts which haven't answered too.
Version 1.7.1:
- Fix display of SOA serial number, by Janne Snabb
<snabb@epipe.com>
- Non-IPv6 builds should not use gethostbyname2()
Version 1.7:
- Removed a debug-line while doing PTR requests.
- Now IPv6 servers are traced too. Use -4 to disable it.
- Added -S option for specifying source IP address.
version 1.6:
- Added SOA record tracing
- Fixed a debug duplicate variable printing.
version 1.5:
- Sometimes it happened while tracing a name without
specifying a server it would return immediatly without
printing any information.
- names with a trailing dot are now handled correctly.
- warning from Kris Kennaway <kris@obsecurity.org> regarding
sprintf()'s without format-strings (yes, I feel ashamed).
- On request of Anthony DeRobertis <asd@suespammers.org>,
via Thomas Seyrat <tomasera@debian.org>, support for PTR
records.
version 1.4:
- Added -Wall to Makefile.am so at least I would get warnings
from my C compiler thank you. Removed some stupid unused
variables.
- Fixed big/little endian problem in the structs so that the
flags are looking allright now.
- Answers are displayed as authoritative or normal.
- Digging goes on until we have hit an authorative server.
- Info about which zone is being queried now.
version 1.3:
- added win32 support by Mike Black <mblack@csihq.com>
- fixed bug where the IP addresses in the resource records
wouldn't be used.
- when an authority NS record wouldn't have an additional
A record it can get multiple IP addresses when it resolves
the hostname in the gethostbyname(). This is now handled
correctly.
version 1.2:
- renamed into dnstracer due to clash with DJBDNS's dnstracer.
- dnstracer would segfault if nameserver name couldn't be
resolved (by Vilhelm Bergman <d96v@dtek.chalmers.se>)
- support for /etc/resolv.conf via a patch from Moritz
Barsnick <moritz@barsnick.net>
- -s . will take A.ROOT-SERVERS.NET
- autoconf/automake support... *shudder*
- support for different query-classes.
- Gerd v. Egidy <egidy@deam.de> gave it RPM capabilities
and checked the automake/autoconf construction.
version 1.1:
- fixed problems for big-endian little-endian machines.
- fixed linking problem on Solaris. Use Makefile.sun for them.
version 1.0:
- initial release

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$Id: CONTACT,v 1.1 2002/01/21 00:40:23 mavetju Exp $
HOW TO CONTACT
Via email: edwin@mavetju.org
Via snail-mail: Edwin Groothuis
7 Islington Crescent
Greenacre NSW2190
AUSTRALIA
I have two mailing-lists:
announce@lists.mavetju.org <- low traffic announcements only
questions@lists.mavetju.org <- general questions
See http://www.mavetju.org/contacts.php on how to subscribe to them.

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$Id: FILES,v 1.1 2002/01/25 01:40:09 mavetju Exp $
General
-------
CHANGES - Change log
CONTACT - How to contact me
FILES - This file
LICENSE - License under which this software is distributed
README - Small manual
Auto-configuration
------------------
Makefile.am - My Makefile-template
configure.in - My configure-template
Makefile.in - (Created by automake)
aclocal.m4 - (Needed by autoconf)
config.guess - (Needed by configure)
config.sub - (Needed by configure)
configure - Configure-file
depcomp - (Needed by configure)
install-sh - (Needed by configure)
missing - (Needed by configure)
mkinstalldirs - (Needed by configure)
Source-file
-----------
dnstracer.8 - Man-page, obtained from dnstracer.pod
dnstracer.c - The source-file
dnstracer.pod - The original man-file
dnstracer.spec - Needed for RPM creation
dnstracer_broken.h - Contains values for enumerations in case they
are not defined in arpa/nameser.h
WIN32 compatibility
-------------------
MSVC.BAT - Microsoft Visual C++ mini-makefile
getopt.c - Visual C++ doesn't provide these routines
getopt.h - Visual C++ doesn't provide these routines
(between brackets: not important, part of autoconfigure)

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LICENSE → LICENCE
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@ -22,3 +22,5 @@ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE. SUCH DAMAGE.
Detailed license info can be found in supplied source files.

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README
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$Id: README,v 1.8 2003/01/06 22:40:31 mavetju Exp $
WHAT IS DNSTRACER?
Dnstracer determines where a given Domain Name Server (DNS) gets
its information from, and follows the chain of DNS servers back to
the servers which know the data.
Its behaviour is similair to ntptrace(8), which does it for the
NTP protocol.
HOW TO INSTALL?
In theory, run 'configure', 'make' and 'make install' should be
enough to install the binary and the man-page. I've developed it
under FreeBSD 4.4 and tested it on Debian, SunOS and Solaris. Due
to the nature of autoconf and friends, you need GNU Make.
If you don't want to have IPv6 support in it, run configure with
the --disable-ipv6 option.
Windows users with Microsoft Visual C++ please use MSVB.BAT (supplied
by Mike Black <mblack@csihq.com>)
LICENSE
BSD license. See the file LICENSE for more information.
CONTACT
My email address is edwin@mavetju.org
My website is http://www.mavetju.org
Mailing-lists are available: http://www.mavetju.org/contacts.php

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##WHAT IS DNSTRACER ?
Dnstracer determines where a given Domain Name Server (DNS) gets
its information from, and follows the chain of DNS servers back to
the servers which know the data.
##EXAMPLE OF USAGE
Show trace of DNS for google.com using A.ROOT-SERVERS.NET
> dnstrace google.com
##FURTHER INFORMATION
The 13 root name servers are operated by 12 independent organisations.
More information is available from: http://www.root-servers.org/
Google also operates 2 public DNS servers:
https://developers.google.com/speed/public-dns/

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DNSTRACER(8) General Commands Manual DNSTRACER(8)
NAME
dnstracer - trace a chain of DNS servers to the source
SYNOPSIS
dnstracer [options] name
DESCRIPTION
dnstracer determines where a given Domain Name Server (DNS) gets its
information from, and follows the chain of DNS servers back to the
servers which know the data.
Options are:
-c Disable local caching.
-C Enable negative caching.
-o Enable overview of received answers at the end.
-q queryclass
Change the query-class, default is A. You can either specify a
number of the type (if you're brave) or one of the following
strings: a, aaaa, a6, soa, cname, hinfo, mx, ns, txt and ptr.
-r retries
Number of retries for DNS requests, default 3.
-s server
DNS server to use for the initial request, default is aquired
from the system. If a dot is specified (.), A.ROOT-SERVERS.NET
will be used.
-v Be verbose on what sent or received.
-4 Use only IPv4 servers, don't query IPv6 servers (only available
when IPv6 support hasn't been disabled)
-S sourceaddress
Use this as source-address for the outgoing packets.
HOW IT WORKS
It sends the specified name-server a non-recursive request for the
name.
Non-recursive means: if the name-server knows it, it will return the
data requested. If the name-server doesn't know it, it will return
pointers to name-servers that are authoritive for the domain part in
the name or it will return the addresses of the root name-servers.
If the name server does returns an authoritative answer for the name,
the next server is queried. If it returns an non-authoritative answer
for the name, the name servers in the authority records will be
queried.
The program stops if all name-servers are queried.
Make sure the server you're querying doesn't do forwarding towards
other servers, as dnstracer is not able to detect this for you.
It detects so called lame servers, which are name-servers which has
been told to have information about a certain domain, but don't have
this information.
EXAMPLES
Search for the A record of www.mavetju.org on your local nameserver:
dnstracer www.mavetju.org
Search for the MX record of mavetju.org on the root-nameservers:
dnstracer "-s" . "-q" mx mavetju.org
Search for the PTR record (hostname) of 212.204.230.141:
dnstracer "-q" ptr 141.230.204.212.in-addr.arpa
And for IPv6 addresses:
dnstracer "-q" ptr "-s" . "-o"
2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.4.0.2.0.0.0.0.8.b.0.e.f.f.3.ip6.int
SEE ALSO
ntptrace(8), traceroute(8), dig(1)
AUTHOR
Edwin Groothuis, edwin@mavetju.org (http://www.mavetju.org)
See http://www.mavetju.org/contacts.php for mailing-lists.
February 10, 2008 February 10, 2008 DNSTRACER(8)

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DNSTRACER(8) General Commands Manual DNSTRACER(8)
NAME
dnstracer - trace a chain of DNS servers to the source
SYNOPSIS
dnstracer [options] name
DESCRIPTION
dnstracer determines where a given Domain Name Server (DNS) gets its
information from, and follows the chain of DNS servers back to the
servers which know the data.
Options are:
-c Disable local caching.
-C Enable negative caching.
-o Enable overview of received answers at the end.
-q queryclass
Change the query-class, default is A. You can either specify a
number of the type (if you're brave) or one of the following
strings: a, aaaa, a6, soa, cname, hinfo, mx, ns, txt and ptr.
-r retries
Number of retries for DNS requests, default 3.
-s server
DNS server to use for the initial request, default is aquired
from the system. If a dot is specified (.), A.ROOT-SERVERS.NET
will be used.
-v Be verbose on what sent or received.
-4 Use only IPv4 servers, don't query IPv6 servers (only available
when IPv6 support hasn't been disabled)
-S sourceaddress
Use this as source-address for the outgoing packets.
HOW IT WORKS
It sends the specified name-server a non-recursive request for the
name.
Non-recursive means: if the name-server knows it, it will return the
data requested. If the name-server doesn't know it, it will return
pointers to name-servers that are authoritive for the domain part in
the name or it will return the addresses of the root name-servers.
If the name server does returns an authoritative answer for the name,
the next server is queried. If it returns an non-authoritative answer
for the name, the name servers in the authority records will be
queried.
The program stops if all name-servers are queried.
Make sure the server you're querying doesn't do forwarding towards
other servers, as dnstracer is not able to detect this for you.
It detects so called lame servers, which are name-servers which has
been told to have information about a certain domain, but don't have
this information.
EXAMPLES
Search for the A record of www.mavetju.org on your local nameserver:
dnstracer www.mavetju.org
Search for the MX record of mavetju.org on the root-nameservers:
dnstracer "-s" . "-q" mx mavetju.org
Search for the PTR record (hostname) of 212.204.230.141:
dnstracer "-q" ptr 141.230.204.212.in-addr.arpa
And for IPv6 addresses:
dnstracer "-q" ptr "-s" . "-o"
2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.4.0.2.0.0.0.0.8.b.0.e.f.f.3.ip6.int
SEE ALSO
ntptrace(8), traceroute(8), dig(1)
AUTHOR
Edwin Groothuis, edwin@mavetju.org (http://www.mavetju.org)
See http://www.mavetju.org/contacts.php for mailing-lists.
February 10, 2008 February 10, 2008 DNSTRACER(8)

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fping_amiga.c
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/*
* Written by Carsten Larsen.
* Public domain.
*/
#include <stdio.h>
#include <stdlib.h>
#include <clib/exec_protos.h>
#include <clib/timer_protos.h>
#include <clib/utility_protos.h>
#include <clib/alib_protos.h>
#include <devices/timer.h>
#define OPEN_ERROR "Cannot open %s.\n"
#define OPEN_VER_ERROR "Cannot open %s (%d.0)\n"
#define DOSLIB_NAME "dos.library"
#define DOSLIB_REV 37L
#define BSDLIB_NAME "bsdsocket.library"
#define BSDLIB_REV 03L
#define UTILLIB_NAME "utility.library"
#define UTILLIB_REV 37L
#define TIMER_NAME TIMERNAME
#define LIB_ERROR 4
#include "config.h"
const char *vers = "\0$VER: " PACKAGE_NAME " " PACKAGE_VERSION " (21.02.2016)";
#include <unistd.h>
#ifdef AOS3
uid_t getuid () {
return 1;
}
int setuid (uid_t id) {
return 1;
}
int h_errno;
#endif
struct Library* DOSBase = NULL;
struct Library* SocketBase = NULL;
struct Library* UtilityBase = NULL;
struct Device* TimerBase = NULL;
struct timerequest* TimeRequest = NULL;
int create_timer();
void delete_timer();
void amiga_open_error(char *name)
{
printf(OPEN_ERROR, name);
}
void amiga_open_lib_error(char *name, int version)
{
printf(OPEN_VER_ERROR, name, version);
}
void close_libs()
{
close_ping_socket();
cleanup_ping_buffer();
if (TimerBase != NULL) {
delete_timer();
}
if (UtilityBase != NULL) {
CloseLibrary(UtilityBase);
UtilityBase = NULL;
}
if (SocketBase != NULL) {
CloseLibrary(SocketBase);
SocketBase = NULL;
}
if (DOSBase != NULL) {
CloseLibrary(DOSBase);
DOSBase = NULL;
}
freeall();
}
int open_libs()
{
struct timeval tv;
atexit(close_libs);
InitSemaphore(&GetaddrinfoSemaphore);
if(!(DOSBase = OpenLibrary((STRPTR)DOSLIB_NAME, DOSLIB_REV))) {
amiga_open_lib_error(DOSLIB_NAME, DOSLIB_REV);
return LIB_ERROR;
}
if(!(SocketBase = OpenLibrary((STRPTR)BSDLIB_NAME, BSDLIB_REV))) {
amiga_open_lib_error(BSDLIB_NAME, BSDLIB_REV);
return LIB_ERROR;
} else {
SocketBaseTags(
SBTM_SETVAL(SBTC_ERRNOPTR(sizeof(errno))), (IPTR) &errno,
SBTM_SETVAL(SBTC_HERRNOLONGPTR), (IPTR) &h_errno,
SBTM_SETVAL(SBTC_LOGTAGPTR), (IPTR) &prog,
TAG_DONE );
}
if(!(UtilityBase = OpenLibrary((STRPTR)UTILLIB_NAME, UTILLIB_REV))) {
amiga_open_lib_error(UTILLIB_NAME, UTILLIB_REV);
return LIB_ERROR;
}
if (create_timer() != 0) {
amiga_open_error(TIMER_NAME);
return LIB_ERROR;
}
getsystime(&tv);
srand(tv.tv_usec);
return 0;
}
int create_timer()
{
LONG error;
struct MsgPort *port = CreatePort(0, 0);
if (port == NULL)
return 1;
TimeRequest = (struct timerequest*)CreateExtIO(port, sizeof(struct timerequest));
if (TimeRequest == NULL)
{
DeletePort(port);
return 1;
}
error = OpenDevice(
(STRPTR)TIMER_NAME, UNIT_MICROHZ,
(struct IORequest*)TimeRequest, 0L
);
if (error != 0)
{
delete_timer(TimeRequest);
return 1;
}
TimerBase = (struct Device*)TimeRequest->tr_node.io_Device;
return 0;
}
void delete_timer()
{
struct MsgPort *port;
if (TimeRequest == NULL)
return;
port = TimeRequest->tr_node.io_Message.mn_ReplyPort;
if (port != 0)
DeletePort(port);
CloseDevice((struct IORequest*)TimeRequest);
DeleteExtIO((struct IORequest*)TimeRequest);
}
int getsystime(struct timeval *tv)
{
struct timeval tv1;
GetSysTime(&tv1);
*tv = tv1;
return 0;
}