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e8bc64e308
The bgpmask literals can include expressions. This is OK but they have to be interpreted as soon as the code is run, not in the time the code is used as value. This led to strange behavior like rewriting bgpmasks when they shan't be rewritten: function mask_generator(int as) { return [= * as * =]; } function another() bgpmask m1; bgpmask m2; { m1 = mask_generator(10); m2 = mask_generator(20); if (m1 == m2) { print("strange"); # this would happen } } Moreover, sending this to CLI would cause stack overflow and knock down the whole BIRD, as soon as there is at least one route to execute the given filter on. show route filter bgpmask mmm; bgppath ppp; { ppp = +empty+; mmm = [= (ppp ~ mmm) =]; print(mmm); accept; } The magic match operator (~) inside the bgpmask literal would try to resolve mmm, which points to the same bgpmask so it would resolve itself, call the magic match operator and vice versa. After this patch, the bgpmask literal will get resolved as soon as it's assigned to mmm and it also will return a type error as bool is not convertible to ASN in BIRD. |
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client | ||
conf | ||
doc | ||
filter | ||
lib | ||
misc | ||
nest | ||
proto | ||
sysdep | ||
tools | ||
.gitignore | ||
.gitlab-ci.yml | ||
aclocal.m4 | ||
bird.conf | ||
configure.ac | ||
Doc | ||
INSTALL | ||
NEWS | ||
README |
BIRD Internet Routing Daemon Home page http://bird.network.cz/ Mailing list bird-users@network.cz (c) 1998--2008 Martin Mares <mj@ucw.cz> (c) 1998--2000 Pavel Machek <pavel@ucw.cz> (c) 1998--2008 Ondrej Filip <feela@network.cz> (c) 2009--2016 CZ.NIC z.s.p.o. ================================================================================ The BIRD project aims to develop a dynamic IP routing daemon with full support of all modern routing protocols, easy to use configuration interface and powerful route filtering language, primarily targeted on (but not limited to) Linux and other UNIX-like systems and distributed under the GNU General Public License. What do we support ================== o Both IPv4 and IPv6 (use --enable-ipv6 when configuring) o Multiple routing tables o Border Gateway Protocol (BGPv4) o Routing Information Protocol (RIPv2, RIPng) o Open Shortest Path First protocol (OSPFv2, OSPFv3) o Babel Routing Protocol (Babel) o Bidirectional Forwarding Detection (BFD) o IPv6 router advertisements o Static routes o Inter-table protocol o Command-line interface allowing on-line control and inspection of status of the daemon o Soft reconfiguration, no need to use complex online commands to change the configuration, just edit the configuration file and notify BIRD to re-read it and it will smoothly switch itself to the new configuration, not disturbing routing protocols unless they are affected by the configuration changes o Powerful language for route filtering, see doc/bird.conf.example o Linux, FreeBSD, NetBSD and OpenBSD ports How to install BIRD =================== o From standard distribution package of your OS (recommended) o From official binary packages for Debian and Red Hat Linux ftp://bird.network.cz/pub/bird/debian/ ftp://bird.network.cz/pub/bird/redhat/ o From source code of the latest stable release version ftp://bird.network.cz/pub/bird/ o From source code of the actual development version git://git.nic.cz/bird.git https://gitlab.labs.nic.cz/labs/bird/ How to install BIRD from source code ------------------------------------ $ ./configure $ make $ su # make install # vi /usr/local/etc/bird.conf See the file INSTALL for more information about installation from source code. Documentation ============= Online documentation is available at http://bird.network.cz/?get_doc or as HTML files in the doc directory, you can install it by `make install-docs' and rebuild it by `make docs', but you'll need SGMLtools and LaTeX to be installed on your machine. You can also download a neatly formatted PostScript version as a separate archive (bird-doc-*.tar.gz) from ftp://bird.network.cz/pub/bird/ User support ============ If you want to help us debugging, enhancing and porting BIRD or just lurk around to see what's going to develop, feel free to subscribe to the BIRD users mailing list bird-users@network.cz, just send `subscribe' to bird-request@network.cz. Bug reports, suggestions, feature requests and code are welcome! We don't use gitlab issues for reporting, sorry. Subscribe: http://bird.network.cz/mailman/listinfo/bird-users/ Archive: http://bird.network.cz/pipermail/bird-users/ Licence ======= This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA History ======= BIRD development started as a student project at the Faculty of Math and Physics, Charles University, Prague, Czech Republic under supervision of RNDr. Libor Forst <forst@cuni.cz>. BIRD has been developed and supported by CZ.NIC z.s.p.o. http://www.nic.cz/ since 2009. Good Luck and enjoy the BIRD :) The BIRD Team