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* Build userland libalias using src/sys/netinet/libalias.glebius2005-05-041-675/+0
| | | | | Reviewed by: ru Repocopy by: peter
* Introduce inline {ip,udp,tcp}_next() functions which take a pointer to andes2004-07-061-2/+2
| | | | | | | {ip,udp,tcp} header and return a void * pointing to the payload (i.e. the first byte past the end of the header and any required padding). Use them consistently throughout libalias to a) reduce code duplication, b) improve code legibility, c) get rid of a bunch of alignment warnings.
* Make libalias WARNS?=6-clean. This mostly involves renaming variablesdes2004-07-051-14/+14
| | | | | | | | | named link, foo_link or link_foo to lnk, foo_lnk or lnk_foo, fixing signed / unsigned comparisons, and shoving unused function arguments under the carpet. I was hoping WARNS?=6 might reveal more serious problems, and perhaps the source of the -O2 breakage, but found no smoking gun.
* Parenthesize return values.des2004-07-051-42/+42
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* Mechanical whitespace cleanup.des2004-07-051-8/+8
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* Run through indent(1) so I can read the code without getting a headache.des2004-03-161-404/+498
| | | | | The result isn't quite knf, but it's knfer than the original, and far more consistent.
* Mostly mechanical rework of libalias:phk2004-01-171-30/+28
| | | | | | | | | | | | Makes it possible to have multiple packet aliasing instances in a single process by moving all static and global variables into an instance structure called "struct libalias". Redefine a new API based on s/PacketAlias/LibAlias/g Add new "instance" argument to all functions in the new API. Implement old API in terms of the new API.
* When servicing an internal FTP server, punch ipfirewall(4) holesru2001-11-271-5/+2
| | | | | | | | | for passive mode data connections (PASV/EPSV -> 227/229). Well, the actual punching happens a bit later, when the aliasing link becomes fully specified. Prodded by: Danny Carroll <dannycarroll@hotmail.com> MFC after: 1 week
* cmott@scientech.com -> cm@linktel.netbrian2001-11-031-1/+1
| | | | Requested by: Charles Mott <cmott@scientech.com>
* Add __FBSDID's to libaliasdillon2001-09-301-2/+3
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* Fixed the bug that prevented communication with FTP servers behindru2001-09-211-3/+4
| | | | | | | | | | | | | | | NAT in extended passive mode if the server's public IP address was different from the main NAT address. This caused a wrong aliasing link to be created that did not route the incoming packets back to the original IP address of the server. natd -v -n pub0 -redirect_address localFTP publicFTP Note that even if localFTP == publicFTP, one still needs to supply the -redirect_address directive. It is needed as a helper because extended passive mode's 229 reply does not contain the IP address. MFC after: 1 week
* Make the copyright consistent.brian2001-08-201-3/+0
| | | | Previously approved by: Charles Mott <cmott@scientech.com>
* Fixed the brain-o in rev. 1.10: the logic check was reversed.ru2001-06-271-1/+1
| | | | Reported by: Bernd Fuerwitt <bf@fuerwitt.de>
* Add BSD-style copyright headersbrian2001-06-041-2/+28
| | | | Approved by: Charles Mott <cmott@scientech.com>
* Add an integer field to keep protocol-specific flags with links.ru2001-05-301-4/+11
| | | | | | | | | | For FTP control connection, keep the CRLF end-of-line termination status in there. Fixed the bug when the first FTP command in a session was ignored. PR: 24048 MFC after: 1 week
* Added boolean argument to link searching functions, indicatingru2000-10-301-1/+1
| | | | whether they should create a link if lookup has failed or not.
* - Improved passive mode FTP support by aliasing 229 replies.ru2000-06-161-312/+337
| | | | | - Stricter checking of PORT/EPRT/227/229 messages format. - Moved all security checks into one place.
* - Added support for passive mode FTP by aliasing 227 replies.ru2000-06-141-15/+207
| | | | | | | | | | | | | | | It does mean that it is now possible to run passive-mode FTP server behind NAT. - SECURITY: FTP aliasing engine now ensures that: o the segment preceding a PORT/227 segment terminates with a \r\n; o the IP address in the PORT/227 matches the source IP address of the packet; o the port number in the PORT command or 277 reply is greater than or equal to 1024. Submitted by: Erik Salander <erik@whistle.com> Reviewed by: ru
* - Add support for FTP EPRT (RFC 2428) command.ru2000-04-061-63/+169
| | | | | | | | | - Minor optimizations. - Minor spelling fixes. PR: 14305 Submitted by: ume Rewritten by: ru
* Add $FreeBSD$ and spell Eklund properly.billf1999-08-291-0/+2
| | | | Approved by: brian (well, he approved adding $Id$)
* Remove all diagnostics to stdout/stderr with #ifdef DEBUGbrian1999-03-091-0/+2
| | | | Statify functions in alias_nbt.c
* Don't call PunchFWHole() ifdef NO_FW_PUNCHbrian1998-06-061-0/+2
| | | | Pointed out by: "Steve Sims" <SimsS@IBM.Net>
* Teach libalias to work with IPFW firewalls (controlled by a flag).eivind1998-01-091-1/+6
| | | | | Obtained from: Yes development tree (+ 10 lines of patches from Charles Mott, original libalias author)
* Create the alias library. This is currently only used bybrian1997-05-231-0/+220
ppp (or will be shortly). Natd can now be updated to use this library rather than carrying its own version of the code. Submitted by: Charles Mott <cmott@srv.net>
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