> From [EMAIL PROTECTED] Tue Oct 2 12:07:04 2001
> Date: Tue, 02 Oct 2001 13:56:47 -0400
> To: [EMAIL PROTECTED]
> From: Rick Cochran <[EMAIL PROTECTED]>
> Subject: LPRng: Need real client IP address in filter
>
> I _desperately_ need for my print filter to know the REAL ip address of the
> lpr client (from the socket connection, not from the data which it sends in
> the control file). Trust me. I do. Really.
>
> force_fqdn_hostname simply does not supply anything useful for that
> purpose. That does not appear to be its purpose.
>
> My next solution was to patch linelist.c to stick the request IP in an
> environment variable which could be picked up by the filter. This appeared
> to work, but really did not. The filter would get an IP address, but it
> would not necessarily be the correct one. I understand how this happens.
>
> I have now mercilessly hacked more code than I wanted to the effect that
> the 'H' line in the control file ends up with "IPnnn.nnn.nnn.nnn" appended
> to whatever seems to insist on being there no matter what I do. This is
> good enough for now, but is not what I would call an esthetically pleasing
> solution.
>
> Any suggestions would be appreciated.
>
> -Rick
>
>
> |Rick Cochran phone: 607-255-7618|
> |Network and Computing Systems, Cornell CIT FAX: 607-255-8521|
> |730 Rhodes Hall, Ithaca, N.Y. 14853 email: [EMAIL PROTECTED]|
1. modify common/gethostinfo.c:
h110: {129} % rcsdiff -c common/gethostinfo.c
===================================================================
RCS file: common/RCS/gethostinfo.c,v
retrieving revision 1.23
diff -c -r1.23 common/gethostinfo.c
*** common/gethostinfo.c 2001/09/29 22:28:46 1.23
--- common/gethostinfo.c 2001/10/08 18:57:59
***************
*** 372,381 ****
}
char *Get_remote_hostbyaddr( struct host_information *info,
! struct sockaddr *sinaddr )
{
char *fqdn;
! fqdn = Get_hostinfo_byaddr( info, sinaddr, 0 );
DEBUG3("Get_remote_hostbyaddr: %s", fqdn );
Set_DYN( &FQDNRemote_FQDN, info->fqdn );
Set_DYN( &ShortRemote_FQDN, info->shorthost );
--- 372,381 ----
}
char *Get_remote_hostbyaddr( struct host_information *info,
! struct sockaddr *sinaddr, int force_ip_addr_use )
{
char *fqdn;
! fqdn = Get_hostinfo_byaddr( info, sinaddr, force_ip_addr_use );
DEBUG3("Get_remote_hostbyaddr: %s", fqdn );
Set_DYN( &ShortRemote_FQDN, info->shorthost );
Set_DYN( &ShortRemote_FQDN, info->shorthost );
2. Modify common/lpd.c:
*** common/lpd.c 2001/09/29 22:28:49 1.23
--- common/lpd.c 2001/10/08 19:47:36
***************
*** 595,601 ****
/* get the remote name and set up the various checks */
Perm_check.addr = &sinaddr;
! Get_remote_hostbyaddr( &RemoteHost_IP, &sinaddr );
Perm_check.remotehost = &RemoteHost_IP;
Perm_check.host = &RemoteHost_IP;
Perm_check.port = ntohs(port);
--- 595,601 ----
/* get the remote name and set up the various checks */
Perm_check.addr = &sinaddr;
! Get_remote_hostbyaddr( &RemoteHost_IP, &sinaddr, 0 );
Perm_check.remotehost = &RemoteHost_IP;
Perm_check.host = &RemoteHost_IP;
Perm_check.port = ntohs(port);
3. For your use, set:
Get_remote_hostbyaddr( &RemoteHost_IP, &sinaddr, 1 );
4. Modify common/getqueue.c:
*** common/getqueue.c 2001/09/29 22:28:46 1.23
--- common/getqueue.c 2001/10/08 19:48:54
***************
*** 2085,2091 ****
if( auth_id ){
Set_str_value(&job->info,AUTHINFO,auth_id);
}
! if( !(s = Find_str_value(&job->info,FROMHOST,Value_sep)) || Is_clean_name(s) ){
Set_str_value(&job->info,FROMHOST,FQDNRemote_FQDN);
s = Find_str_value(&job->info,FROMHOST,Value_sep);
}
--- 2085,2091 ----
if( auth_id ){
Set_str_value(&job->info,AUTHINFO,auth_id);
}
! if( 1 || !(s = Find_str_value(&job->info,FROMHOST,Value_sep)) ||
Is_clean_name(s) ){
Set_str_value(&job->info,FROMHOST,FQDNRemote_FQDN);
s = Find_str_value(&job->info,FROMHOST,Value_sep);
}
5. Compile, etc. Now you will have IP addresses instead of host names
used.
Patrick Powell
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