Addition of OSPF-API - Amir Guindehi <nospam.amir@datacore.ch>

11 files changed, 2150 insertions, 0 deletions

diff --git a/ospfclient/AUTHORS b/ospfclient/AUTHORS
new file mode 100644
index 00000000..b865c550
--- /dev/null
+++ b/ospfclient/AUTHORS
@@ -0,0 +1 @@
+Ralph Keller <keller@tik.ee.ethz.ch>
diff --git a/ospfclient/COPYING b/ospfclient/COPYING
new file mode 100644
index 00000000..a43ea212
--- /dev/null
+++ b/ospfclient/COPYING
@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                          675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
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+
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+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
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+    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
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+    (at your option) any later version.
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+    This is free software, and you are welcome to redistribute it
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
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diff --git a/ospfclient/ChangeLog b/ospfclient/ChangeLog
new file mode 100644
index 00000000..275b14ef
--- /dev/null
+++ b/ospfclient/ChangeLog
@@ -0,0 +1,57 @@
+2003-01-10  Ralph Keller <keller@tik.ee.ethz.ch>
+	* New ChangeLog
+	
+2003-01-08  Ralph Keller <keller@tik.ee.ethz.ch>
+	* apiclient message passing bug resolved 
+	* (proposed by Masahiko)
+
+2002-10-09  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Includes patch in OSPFd for ISM, NSM, neighbor
+	
+2002-09-16  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Current patch vs. Zebra-0.93b 
+
+2002-08-22  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Bugfix: LSA updates are now received only once even 
+	* if multiple opaque types are registered 
+
+2002-08-06  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Upgrade of OSPF API to Zebra-0.93a.
+
+2002-06-13  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Opaque LSA origination bug fixed by Masahiko. 
+	* This code is based on 0.93-pre
+
+2002-05-03  Ralph Keller <keller@tik.ee.ethz.ch>
+	* Upgrade to newest Zebra from CVS repository. ospf_flood_through
+	* function did not work after upgrade. Function 
+	* ospf_apiserver_flood_opaque_lsa added. Also byte order problem
+	* with port numbers resolved.
+
+2002-05-02  Ralph Keller <keller@tik.ee.ethz.ch>
+
+	* new autoconf and automake files, now called configure.in
+	* instead of configure.ac
+
+2002-04-24  Ralph Keller <keller@tik.ee.ethz.ch>
+
+	* reverse channel now works (syncport and syncport+1)
+	* ospf_apiclient.c: standard includes removed (not needed)
+	* bzero replaced with memset
+
+2002-04-18  Ralph Keller <keller@tik.ee.ethz.ch>
+
+	* 2-way phase connection setup
+
+2002-04-05  Ralph Keller <keller@tik.ee.ethz.ch>
+
+        * Changes incorporated as proposed by Masahiko
+
+2002-04-05  Ralph Keller <keller@tik.ee.ethz.ch>
+
+        * autoconf and automake-style Makefile
+	
+2002-04-04  Ralph Keller <keller@tik.ee.ethz.ch>
+
+        * 1st public release of OSPF API
+	
diff --git a/ospfclient/INSTALL b/ospfclient/INSTALL
new file mode 100644
index 00000000..b42a17ac
--- /dev/null
+++ b/ospfclient/INSTALL
@@ -0,0 +1,182 @@
+Basic Installation
+==================
+
+   These are generic installation instructions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
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+
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+
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+Compilers and Options
+=====================
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+     CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
+
+Or on systems that have the `env' program, you can do it like this:
+     env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
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+Installation Names
+==================
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+   By default, `make install' will install the package's files in
+`/usr/local/bin', `/usr/local/man', etc.  You can specify an
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+Optional Features
+=================
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+Specifying the System Type
+==========================
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+See the file `config.sub' for the possible values of each field.  If
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+Sharing Defaults
+================
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+   If you want to set default values for `configure' scripts to share,
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+Operation Controls
+==================
+
+   `configure' recognizes the following options to control how it
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+
+`--cache-file=FILE'
+     Use and save the results of the tests in FILE instead of
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+     script, and exit.
+
+`configure' also accepts some other, not widely useful, options.
diff --git a/ospfclient/Makefile.am b/ospfclient/Makefile.am
new file mode 100644
index 00000000..c345d1bd
--- /dev/null
+++ b/ospfclient/Makefile.am
@@ -0,0 +1,19 @@
+## Automake.am for OSPF API client
+
+INCLUDES = -I../lib -I../
+
+noinst_LIBRARIES = libospfapiclient.a
+sbin_PROGRAMS = ospfclient
+
+libospfapiclient_a_SOURCES = \
+	ospf_apiclient.c
+
+noinst_HEADERS = \
+	ospf_apiclient.h
+
+ospfclient_SOURCES = \
+	ospfclient.c $(libospfapiclient_a_SOURCES)
+
+ospfclient_LDADD = ../ospfd/libospf.a ../lib/libzebra.a
+
+
diff --git a/ospfclient/Makefile.in b/ospfclient/Makefile.in
new file mode 100644
index 00000000..4deac874
--- /dev/null
+++ b/ospfclient/Makefile.in
@@ -0,0 +1,374 @@
+# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am
+
+# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+
+SHELL = @SHELL@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+sbindir = @sbindir@
+libexecdir = @libexecdir@
+datadir = @datadir@
+sysconfdir = @sysconfdir@
+sharedstatedir = @sharedstatedir@
+localstatedir = @localstatedir@
+libdir = @libdir@
+infodir = @infodir@
+mandir = @mandir@
+includedir = @includedir@
+oldincludedir = /usr/include
+
+DESTDIR =
+
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+
+top_builddir = ..
+
+ACLOCAL = @ACLOCAL@
+AUTOCONF = @AUTOCONF@
+AUTOMAKE = @AUTOMAKE@
+AUTOHEADER = @AUTOHEADER@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+transform = @program_transform_name@
+
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+host_alias = @host_alias@
+host_triplet = @host@
+AR = @AR@
+BGPD = @BGPD@
+CC = @CC@
+CPP = @CPP@
+CURSES = @CURSES@
+IF_METHOD = @IF_METHOD@
+IF_PROC = @IF_PROC@
+IPFORWARD = @IPFORWARD@
+KERNEL_METHOD = @KERNEL_METHOD@
+LIBPAM = @LIBPAM@
+LIB_IPV6 = @LIB_IPV6@
+LIB_REGEX = @LIB_REGEX@
+MAKEINFO = @MAKEINFO@
+MULTIPATH_NUM = @MULTIPATH_NUM@
+OSPF6D = @OSPF6D@
+OSPFCLIENT = @OSPFCLIENT@
+OSPFD = @OSPFD@
+OTHER_METHOD = @OTHER_METHOD@
+PACKAGE = @PACKAGE@
+RANLIB = @RANLIB@
+RIPD = @RIPD@
+RIPNGD = @RIPNGD@
+RTREAD_METHOD = @RTREAD_METHOD@
+RT_METHOD = @RT_METHOD@
+VERSION = @VERSION@
+VTYSH = @VTYSH@
+ZEBRA = @ZEBRA@
+
+INCLUDES = -I../lib -I../
+
+noinst_LIBRARIES = libospfapiclient.a
+sbin_PROGRAMS = ospfclient
+
+libospfapiclient_a_SOURCES = \
+	ospf_apiclient.c
+
+
+noinst_HEADERS = \
+	ospf_apiclient.h
+
+
+ospfclient_SOURCES = \
+	ospfclient.c $(libospfapiclient_a_SOURCES)
+
+
+ospfclient_LDADD = ../ospfd/libospf.a ../lib/libzebra.a
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = ../config.h
+CONFIG_CLEAN_FILES = 
+LIBRARIES =  $(noinst_LIBRARIES)
+
+
+DEFS = @DEFS@ -I. -I$(srcdir) -I..
+CPPFLAGS = @CPPFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+libospfapiclient_a_LIBADD = 
+libospfapiclient_a_OBJECTS =  ospf_apiclient.o
+PROGRAMS =  $(sbin_PROGRAMS)
+
+ospfclient_OBJECTS =  ospfclient.o ospf_apiclient.o
+ospfclient_DEPENDENCIES =  ../ospfd/libospf.a ../lib/libzebra.a
+ospfclient_LDFLAGS = 
+CFLAGS = @CFLAGS@
+COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
+HEADERS =  $(noinst_HEADERS)
+
+DIST_COMMON =  README AUTHORS COPYING ChangeLog INSTALL Makefile.am \
+Makefile.in NEWS
+
+
+DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
+
+TAR = gtar
+GZIP_ENV = --best
+DEP_FILES =  .deps/ospf_apiclient.P .deps/ospfclient.P
+SOURCES = $(libospfapiclient_a_SOURCES) $(ospfclient_SOURCES)
+OBJECTS = $(libospfapiclient_a_OBJECTS) $(ospfclient_OBJECTS)
+
+all: all-redirect
+.SUFFIXES:
+.SUFFIXES: .S .c .o .s
+$(srcdir)/Makefile.in: Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) 
+	cd $(top_srcdir) && $(AUTOMAKE) --foreign ospfclient/Makefile
+
+Makefile: $(srcdir)/Makefile.in  $(top_builddir)/config.status $(BUILT_SOURCES)
+	cd $(top_builddir) \
+	  && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+
+mostlyclean-noinstLIBRARIES:
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+
+distclean-noinstLIBRARIES:
+
+maintainer-clean-noinstLIBRARIES:
+
+.s.o:
+	$(COMPILE) -c $<
+
+.S.o:
+	$(COMPILE) -c $<
+
+mostlyclean-compile:
+	-rm -f *.o core *.core
+
+clean-compile:
+
+distclean-compile:
+	-rm -f *.tab.c
+
+maintainer-clean-compile:
+
+libospfapiclient.a: $(libospfapiclient_a_OBJECTS) $(libospfapiclient_a_DEPENDENCIES)
+	-rm -f libospfapiclient.a
+	$(AR) cru libospfapiclient.a $(libospfapiclient_a_OBJECTS) $(libospfapiclient_a_LIBADD)
+	$(RANLIB) libospfapiclient.a
+
+mostlyclean-sbinPROGRAMS:
+
+clean-sbinPROGRAMS:
+	-test -z "$(sbin_PROGRAMS)" || rm -f $(sbin_PROGRAMS)
+
+distclean-sbinPROGRAMS:
+
+maintainer-clean-sbinPROGRAMS:
+
+install-sbinPROGRAMS: $(sbin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(sbindir)
+	@list='$(sbin_PROGRAMS)'; for p in $$list; do \
+	  if test -f $$p; then \
+	    echo "  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(sbindir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`"; \
+	     $(INSTALL_PROGRAM) $$p $(DESTDIR)$(sbindir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \
+	  else :; fi; \
+	done
+
+uninstall-sbinPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	list='$(sbin_PROGRAMS)'; for p in $$list; do \
+	  rm -f $(DESTDIR)$(sbindir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \
+	done
+
+ospfclient: $(ospfclient_OBJECTS) $(ospfclient_DEPENDENCIES)
+	@rm -f ospfclient
+	$(LINK) $(ospfclient_LDFLAGS) $(ospfclient_OBJECTS) $(ospfclient_LDADD) $(LIBS)
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES) $(LISP)
+	list='$(SOURCES) $(HEADERS)'; \
+	unique=`for i in $$list; do echo $$i; done | \
+	  awk '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	here=`pwd` && cd $(srcdir) \
+	  && mkid -f$$here/ID $$unique $(LISP)
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)'; \
+	unique=`for i in $$list; do echo $$i; done | \
+	  awk '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
+	  || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags  $$unique $(LISP) -o $$here/TAGS)
+
+mostlyclean-tags:
+
+clean-tags:
+
+distclean-tags:
+	-rm -f TAGS ID
+
+maintainer-clean-tags:
+
+distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
+
+subdir = ospfclient
+
+distdir: $(DISTFILES)
+	here=`cd $(top_builddir) && pwd`; \
+	top_distdir=`cd $(top_distdir) && pwd`; \
+	distdir=`cd $(distdir) && pwd`; \
+	cd $(top_srcdir) \
+	  && $(AUTOMAKE) --include-deps --build-dir=$$here --srcdir-name=$(top_srcdir) --output-dir=$$top_distdir --foreign ospfclient/Makefile
+	@for file in $(DISTFILES); do \
+	  d=$(srcdir); \
+	  if test -d $$d/$$file; then \
+	    cp -pr $$d/$$file $(distdir)/$$file; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || ln $$d/$$file $(distdir)/$$file 2> /dev/null \
+	    || cp -p $$d/$$file $(distdir)/$$file || :; \
+	  fi; \
+	done
+
+DEPS_MAGIC := $(shell mkdir .deps > /dev/null 2>&1 || :)
+
+-include $(DEP_FILES)
+
+mostlyclean-depend:
+
+clean-depend:
+
+distclean-depend:
+	-rm -rf .deps
+
+maintainer-clean-depend:
+
+%.o: %.c
+	@echo '$(COMPILE) -c $<'; \
+	$(COMPILE) -Wp,-MD,.deps/$(*F).pp -c $<
+	@-cp .deps/$(*F).pp .deps/$(*F).P; \
+	tr ' ' '\012' < .deps/$(*F).pp \
+	  | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \
+	    >> .deps/$(*F).P; \
+	rm .deps/$(*F).pp
+
+%.lo: %.c
+	@echo '$(LTCOMPILE) -c $<'; \
+	$(LTCOMPILE) -Wp,-MD,.deps/$(*F).pp -c $<
+	@-sed -e 's/^\([^:]*\)\.o[ 	]*:/\1.lo \1.o :/' \
+	  < .deps/$(*F).pp > .deps/$(*F).P; \
+	tr ' ' '\012' < .deps/$(*F).pp \
+	  | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \
+	    >> .deps/$(*F).P; \
+	rm -f .deps/$(*F).pp
+info-am:
+info: info-am
+dvi-am:
+dvi: dvi-am
+check-am: all-am
+check: check-am
+installcheck-am:
+installcheck: installcheck-am
+install-exec-am: install-sbinPROGRAMS
+install-exec: install-exec-am
+
+install-data-am:
+install-data: install-data-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+install: install-am
+uninstall-am: uninstall-sbinPROGRAMS
+uninstall: uninstall-am
+all-am: Makefile $(LIBRARIES) $(PROGRAMS) $(HEADERS)
+all-redirect: all-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install
+installdirs:
+	$(mkinstalldirs)  $(DESTDIR)$(sbindir)
+
+
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-rm -f Makefile $(CONFIG_CLEAN_FILES)
+	-rm -f config.cache config.log stamp-h stamp-h[0-9]*
+
+maintainer-clean-generic:
+mostlyclean-am:  mostlyclean-noinstLIBRARIES mostlyclean-compile \
+		mostlyclean-sbinPROGRAMS mostlyclean-tags \
+		mostlyclean-depend mostlyclean-generic
+
+mostlyclean: mostlyclean-am
+
+clean-am:  clean-noinstLIBRARIES clean-compile clean-sbinPROGRAMS \
+		clean-tags clean-depend clean-generic mostlyclean-am
+
+clean: clean-am
+
+distclean-am:  distclean-noinstLIBRARIES distclean-compile \
+		distclean-sbinPROGRAMS distclean-tags distclean-depend \
+		distclean-generic clean-am
+
+distclean: distclean-am
+
+maintainer-clean-am:  maintainer-clean-noinstLIBRARIES \
+		maintainer-clean-compile maintainer-clean-sbinPROGRAMS \
+		maintainer-clean-tags maintainer-clean-depend \
+		maintainer-clean-generic distclean-am
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+
+maintainer-clean: maintainer-clean-am
+
+.PHONY: mostlyclean-noinstLIBRARIES distclean-noinstLIBRARIES \
+clean-noinstLIBRARIES maintainer-clean-noinstLIBRARIES \
+mostlyclean-compile distclean-compile clean-compile \
+maintainer-clean-compile mostlyclean-sbinPROGRAMS \
+distclean-sbinPROGRAMS clean-sbinPROGRAMS maintainer-clean-sbinPROGRAMS \
+uninstall-sbinPROGRAMS install-sbinPROGRAMS tags mostlyclean-tags \
+distclean-tags clean-tags maintainer-clean-tags distdir \
+mostlyclean-depend distclean-depend clean-depend \
+maintainer-clean-depend info-am info dvi-am dvi check check-am \
+installcheck-am installcheck install-exec-am install-exec \
+install-data-am install-data install-am install uninstall-am uninstall \
+all-redirect all-am all installdirs mostlyclean-generic \
+distclean-generic clean-generic maintainer-clean-generic clean \
+mostlyclean distclean maintainer-clean
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/ospfclient/NEWS b/ospfclient/NEWS
new file mode 100644
index 00000000..5b1ec4fd
--- /dev/null
+++ b/ospfclient/NEWS
@@ -0,0 +1 @@
+This file contains news.
diff --git a/ospfclient/README b/ospfclient/README
new file mode 100644
index 00000000..894cd783
--- /dev/null
+++ b/ospfclient/README
@@ -0,0 +1,4 @@
+For more information about this software check out:
+
+http://www.tik.ee.ethz.ch/~keller/ospfapi/
+
diff --git a/ospfclient/ospf_apiclient.c b/ospfclient/ospf_apiclient.c
new file mode 100644
index 00000000..3a62a423
--- /dev/null
+++ b/ospfclient/ospf_apiclient.c
@@ -0,0 +1,747 @@
+/*
+ * Client side of OSPF API.
+ * Copyright (C) 2001, 2002, 2003 Ralph Keller
+ *
+ * This file is part of GNU Zebra.
+ * 
+ * GNU Zebra 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, or (at your
+ * option) any later version.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+#include "version.h"
+#include "getopt.h"
+#include "thread.h"
+#include "prefix.h"
+#include "linklist.h"
+#include "if.h"
+#include "vector.h"
+#include "vty.h"
+#include "command.h"
+#include "filter.h"
+#include "stream.h"
+#include "log.h"
+#include "memory.h"
+
+#include "ospfd/ospfd.h"
+#include "ospfd/ospf_interface.h"
+#include "ospfd/ospf_asbr.h"
+#include "ospfd/ospf_lsa.h"
+#include "ospfd/ospf_opaque.h"
+#include "ospfd/ospf_lsdb.h"
+#include "ospfd/ospf_neighbor.h"
+#include "ospfd/ospf_dump.h"
+#include "ospfd/ospf_zebra.h"
+#include "ospfd/ospf_api.h"
+
+#include "ospf_apiclient.h"
+
+/* Backlog for listen */
+#define BACKLOG 5
+
+/* -----------------------------------------------------------
+ * Forward declarations
+ * -----------------------------------------------------------
+ */
+
+void ospf_apiclient_handle_reply (struct ospf_apiclient *oclient,
+				  struct msg *msg);
+void ospf_apiclient_handle_update_notify (struct ospf_apiclient *oclient,
+					  struct msg *msg);
+void ospf_apiclient_handle_delete_notify (struct ospf_apiclient *oclient,
+					  struct msg *msg);
+
+/* -----------------------------------------------------------
+ * Initialization
+ * -----------------------------------------------------------
+ */
+
+unsigned short
+ospf_apiclient_getport (void)
+{
+  struct servent *sp = getservbyname ("ospfapi", "tcp");
+
+  return sp ? ntohs (sp->s_port) : OSPF_API_SYNC_PORT;
+}
+
+/* -----------------------------------------------------------
+ * Followings are functions for connection management
+ * -----------------------------------------------------------
+ */
+
+struct ospf_apiclient *
+ospf_apiclient_connect (char *host, int syncport)
+{
+  struct sockaddr_in myaddr_sync;
+  struct sockaddr_in myaddr_async;
+  struct sockaddr_in peeraddr;
+  struct hostent *hp;
+  struct ospf_apiclient *new;
+  int size = 0;
+  int peeraddrlen;
+  int async_server_sock;
+  int fd1, fd2;
+  int ret;
+  int on = 1;
+
+  /* There are two connections between the client and the server.
+     First the client opens a connection for synchronous requests/replies 
+     to the server. The server will accept this connection and
+     as a reaction open a reverse connection channel for 
+     asynchronous messages. */
+
+  async_server_sock = socket (AF_INET, SOCK_STREAM, 0);
+  if (async_server_sock < 0)
+    {
+      fprintf (stderr,
+	       "ospf_apiclient_connect: creating async socket failed\n");
+      return NULL;
+    }
+
+  /* Prepare socket for asynchronous messages */
+  /* Initialize async address structure */
+  memset (&myaddr_async, 0, sizeof (struct sockaddr_in));
+  myaddr_async.sin_family = AF_INET;
+  myaddr_async.sin_addr.s_addr = htonl (INADDR_ANY);
+  myaddr_async.sin_port = htons (syncport+1);
+  size = sizeof (struct sockaddr_in);
+#ifdef HAVE_SIN_LEN
+  myaddr_async.sin_len = size;
+#endif /* HAVE_SIN_LEN */
+
+  /* This is a server socket, reuse addr and port */
+  ret = setsockopt (async_server_sock, SOL_SOCKET,
+		    SO_REUSEADDR, (void *) &on, sizeof (on));
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: SO_REUSEADDR failed\n");
+      close (async_server_sock);
+      return NULL;
+    }
+
+#ifdef SO_REUSEPORT
+  ret = setsockopt (async_server_sock, SOL_SOCKET, SO_REUSEPORT,
+		    (void *) &on, sizeof (on));
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: SO_REUSEPORT failed\n");
+      close (async_server_sock);
+      return NULL;
+    }
+#endif /* SO_REUSEPORT */
+
+  /* Bind socket to address structure */
+  ret = bind (async_server_sock, (struct sockaddr *) &myaddr_async, size);
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: bind async socket failed\n");
+      close (async_server_sock);
+      return NULL;
+    }
+
+  /* Wait for reverse channel connection establishment from server */
+  ret = listen (async_server_sock, BACKLOG);
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: listen: %s\n", strerror (errno));
+      close (async_server_sock);
+      return NULL;
+    }
+
+  /* Make connection for synchronous requests and connect to server */
+  /* Resolve address of server */
+  hp = gethostbyname (host);
+  if (!hp)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: no such host %s\n", host);
+      close (async_server_sock);
+      return NULL;
+    }
+
+  fd1 = socket (AF_INET, SOCK_STREAM, 0);
+  if (fd1 < 0)
+    {
+      fprintf (stderr,
+	       "ospf_apiclient_connect: creating sync socket failed\n");
+      return NULL;
+    }
+
+
+  /* Reuse addr and port */
+  ret = setsockopt (fd1, SOL_SOCKET,
+                    SO_REUSEADDR, (void *) &on, sizeof (on));
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: SO_REUSEADDR failed\n");
+      close (fd1);
+      return NULL;
+    }
+
+#ifdef SO_REUSEPORT
+  ret = setsockopt (fd1, SOL_SOCKET, SO_REUSEPORT,
+                    (void *) &on, sizeof (on));
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: SO_REUSEPORT failed\n");
+      close (fd1);
+      return NULL;
+    }
+#endif /* SO_REUSEPORT */
+
+
+  /* Bind sync socket to address structure. This is needed since we
+     want the sync port number on a fixed port number. The reverse
+     async channel will be at this port+1 */
+
+  memset (&myaddr_sync, 0, sizeof (struct sockaddr_in));
+  myaddr_sync.sin_family = AF_INET;
+  myaddr_sync.sin_port = htons (syncport);
+#ifdef HAVE_SIN_LEN
+  myaddr_sync.sin_len = sizeof (struct sockaddr_in);
+#endif /* HAVE_SIN_LEN */
+
+  ret = bind (fd1, (struct sockaddr *) &myaddr_sync, size);
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: bind sync socket failed\n");
+      close (fd1);
+      return NULL;
+    }
+
+  /* Prepare address structure for connect */
+  memcpy (&myaddr_sync.sin_addr, hp->h_addr, hp->h_length);
+  myaddr_sync.sin_family = AF_INET;
+  myaddr_sync.sin_port = htons(ospf_apiclient_getport ());
+#ifdef HAVE_SIN_LEN
+  myaddr_sync.sin_len = sizeof (struct sockaddr_in);
+#endif /* HAVE_SIN_LEN */
+
+  /* Now establish synchronous channel with OSPF daemon */
+  ret = connect (fd1, (struct sockaddr *) &myaddr_sync,
+		 sizeof (struct sockaddr_in));
+  if (ret < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: sync connect failed\n");
+      close (async_server_sock);
+      close (fd1);
+      return NULL;
+    }
+
+  /* Accept reverse connection */
+  peeraddrlen = sizeof (struct sockaddr_in);
+  memset (&peeraddr, 0, peeraddrlen);
+
+  fd2 =
+    accept (async_server_sock, (struct sockaddr *) &peeraddr, &peeraddrlen);
+  if (fd2 < 0)
+    {
+      fprintf (stderr, "ospf_apiclient_connect: accept async failed\n");
+      close (async_server_sock);
+      close (fd1);
+      return NULL;
+    }
+
+  /* Server socket is not needed anymore since we are not accepting more 
+     connections */
+  close (async_server_sock);
+
+  /* Create new client-side instance */
+  new = XMALLOC (MTYPE_OSPF_APICLIENT, sizeof (struct ospf_apiclient));
+  memset (new, 0, sizeof (struct ospf_apiclient));
+
+  /* Initialize socket descriptors for sync and async channels */
+  new->fd_sync = fd1;
+  new->fd_async = fd2;
+
+  return new;
+}
+
+int
+ospf_apiclient_close (struct ospf_apiclient *oclient)
+{
+
+  if (oclient->fd_sync >= 0)
+    {
+      close (oclient->fd_sync);
+    }
+
+  if (oclient->fd_async >= 0)
+    {
+      close (oclient->fd_async);
+    }
+
+  /* Free client structure */
+  XFREE (MTYPE_OSPF_APICLIENT, oclient);
+  return 0;
+}
+
+/* -----------------------------------------------------------
+ * Followings are functions to send a request to OSPFd
+ * -----------------------------------------------------------
+ */
+
+/* Send synchronous request, wait for reply */
+int
+ospf_apiclient_send_request (struct ospf_apiclient *oclient, struct msg *msg)
+{
+  u_int32_t reqseq;
+  struct msg_reply *msgreply;
+  int rc;
+
+  /* NB: Given "msg" is freed inside this function. */
+
+  /* Remember the sequence number of the request */
+  reqseq = ntohl (msg->hdr.msgseq);
+
+  /* Write message to OSPFd */
+  rc = msg_write (oclient->fd_sync, msg);
+  msg_free (msg);
+
+  if (rc < 0)
+    {
+      return -1;
+    }
+
+  /* Wait for reply *//* NB: New "msg" is allocated by "msg_read()". */
+  msg = msg_read (oclient->fd_sync);
+  if (!msg)
+    return -1;
+
+  assert (msg->hdr.msgtype == MSG_REPLY);
+  assert (ntohl (msg->hdr.msgseq) == reqseq);
+
+  msgreply = (struct msg_reply *) STREAM_DATA (msg->s);
+  rc = msgreply->errcode;
+  msg_free (msg);
+
+  return rc;
+}
+
+
+/* -----------------------------------------------------------
+ * Helper functions
+ * -----------------------------------------------------------
+ */
+
+static u_int32_t
+ospf_apiclient_get_seqnr (void)
+{
+  static u_int32_t seqnr = MIN_SEQ;
+  u_int32_t tmp;
+
+  tmp = seqnr;
+  /* Increment sequence number */
+  if (seqnr < MAX_SEQ)
+    {
+      seqnr++;
+    }
+  else
+    {
+      seqnr = MIN_SEQ;
+    }
+  return tmp;
+}
+
+/* -----------------------------------------------------------
+ * API to access OSPF daemon by client applications.
+ * -----------------------------------------------------------
+ */
+
+/*
+ * Synchronous request to register opaque type.
+ */
+int
+ospf_apiclient_register_opaque_type (struct ospf_apiclient *cl,
+				     u_char ltype, u_char otype)
+{
+  struct msg *msg;
+  int rc;
+
+  /* just put 1 as a sequence number. */
+  msg = new_msg_register_opaque_type (ospf_apiclient_get_seqnr (),
+				      ltype, otype);
+  if (!msg)
+    {
+      fprintf (stderr, "new_msg_register_opaque_type failed\n");
+      return -1;
+    }
+
+  rc = ospf_apiclient_send_request (cl, msg);
+  return rc;
+}
+
+/* 
+ * Synchronous request to synchronize with OSPF's LSDB.
+ * Two steps required: register_event in order to get
+ * dynamic updates and LSDB_Sync.
+ */
+int
+ospf_apiclient_sync_lsdb (struct ospf_apiclient *oclient)
+{
+  struct msg *msg;
+  int rc;
+  struct lsa_filter_type filter;
+
+  filter.typemask = 0xFFFF;	/* all LSAs */
+  filter.origin = ANY_ORIGIN;
+  filter.num_areas = 0;		/* all Areas. */
+
+  msg = new_msg_register_event (ospf_apiclient_get_seqnr (), &filter);
+  if (!msg)
+    {
+      fprintf (stderr, "new_msg_register_event failed\n");
+      return -1;
+    }
+  rc = ospf_apiclient_send_request (oclient, msg);
+
+  if (rc != 0)
+    goto out;
+
+  msg = new_msg_sync_lsdb (ospf_apiclient_get_seqnr (), &filter);
+  if (!msg)
+    {
+      fprintf (stderr, "new_msg_sync_lsdb failed\n");
+      return -1;
+    }
+  rc = ospf_apiclient_send_request (oclient, msg);
+
+out:
+  return rc;
+}
+
+/* 
+ * Synchronous request to originate or update an LSA.
+ */
+
+int
+ospf_apiclient_lsa_originate (struct ospf_apiclient *oclient,
+			      struct in_addr ifaddr,
+			      struct in_addr area_id,
+			      u_char lsa_type,
+			      u_char opaque_type, u_int32_t opaque_id,
+			      void *opaquedata, int opaquelen)
+{
+  struct msg *msg;
+  int rc;
+  u_char buf[OSPF_MAX_LSA_SIZE];
+  struct lsa_header *lsah;
+  u_int32_t tmp;
+
+
+  /* We can only originate opaque LSAs */
+  if (!IS_OPAQUE_LSA (lsa_type))
+    {
+      fprintf (stderr, "Cannot originate non-opaque LSA type %d\n", lsa_type);
+      return OSPF_API_ILLEGALLSATYPE;
+    }
+
+  /* Make a new LSA from parameters */
+  lsah = (struct lsa_header *) buf;
+  lsah->ls_age = 0;
+  lsah->options = 0;
+  lsah->type = lsa_type;
+
+  tmp = SET_OPAQUE_LSID (opaque_type, opaque_id);
+  lsah->id.s_addr = htonl (tmp);
+  lsah->adv_router.s_addr = 0;
+  lsah->ls_seqnum = 0;
+  lsah->checksum = 0;
+  lsah->length = htons (sizeof (struct lsa_header) + opaquelen);
+
+  memcpy (((u_char *) lsah) + sizeof (struct lsa_header), opaquedata,
+	  opaquelen);
+
+  msg = new_msg_originate_request (ospf_apiclient_get_seqnr (),
+				   ifaddr, area_id, lsah);
+  if (!msg)
+    {
+      fprintf (stderr, "new_msg_originate_request failed\n");
+      return OSPF_API_NOMEMORY;
+    }
+
+  rc = ospf_apiclient_send_request (oclient, msg);
+  return rc;
+}
+
+int
+ospf_apiclient_lsa_delete (struct ospf_apiclient *oclient,
+			   struct in_addr area_id, u_char lsa_type,
+			   u_char opaque_type, u_int32_t opaque_id)
+{
+  struct msg *msg;
+  int rc;
+
+  /* Only opaque LSA can be deleted */
+  if (!IS_OPAQUE_LSA (lsa_type))
+    {
+      fprintf (stderr, "Cannot delete non-opaque LSA type %d\n", lsa_type);
+      return OSPF_API_ILLEGALLSATYPE;
+    }
+
+  /* opaque_id is in host byte order and will be converted
+   * to network byte order by new_msg_delete_request */
+  msg = new_msg_delete_request (ospf_apiclient_get_seqnr (),
+				area_id, lsa_type, opaque_type, opaque_id);
+
+  rc = ospf_apiclient_send_request (oclient, msg);
+  return rc;
+}
+
+/* -----------------------------------------------------------
+ * Followings are handlers for messages from OSPF daemon
+ * -----------------------------------------------------------
+ */
+
+void
+ospf_apiclient_handle_ready (struct ospf_apiclient *oclient, struct msg *msg)
+{
+  struct msg_ready_notify *r;
+  r = (struct msg_ready_notify *) STREAM_DATA (msg->s);
+
+  /* Invoke registered callback function. */
+  if (oclient->ready_notify)
+    {
+      (oclient->ready_notify) (r->lsa_type, r->opaque_type, r->addr);
+    }
+}
+
+void
+ospf_apiclient_handle_new_if (struct ospf_apiclient *oclient, struct msg *msg)
+{
+  struct msg_new_if *n;
+  n = (struct msg_new_if *) STREAM_DATA (msg->s);
+
+  /* Invoke registered callback function. */
+  if (oclient->new_if)
+    {
+      (oclient->new_if) (n->ifaddr, n->area_id);
+    }
+}
+
+void
+ospf_apiclient_handle_del_if (struct ospf_apiclient *oclient, struct msg *msg)
+{
+  struct msg_del_if *d;
+  d = (struct msg_del_if *) STREAM_DATA (msg->s);
+
+  /* Invoke registered callback function. */
+  if (oclient->del_if)
+    {
+      (oclient->del_if) (d->ifaddr);
+    }
+}
+
+void
+ospf_apiclient_handle_ism_change (struct ospf_apiclient *oclient,
+				  struct msg *msg)
+{
+  struct msg_ism_change *m;
+  m = (struct msg_ism_change *) STREAM_DATA (msg->s);
+
+  /* Invoke registered callback function. */
+  if (oclient->ism_change)
+    {
+      (oclient->ism_change) (m->ifaddr, m->area_id, m->status);
+    }
+
+}
+
+void
+ospf_apiclient_handle_nsm_change (struct ospf_apiclient *oclient,
+				  struct msg *msg)
+{
+  struct msg_nsm_change *m;
+  m = (struct msg_nsm_change *) STREAM_DATA (msg->s);
+
+  /* Invoke registered callback function. */
+  if (oclient->nsm_change)
+    {
+      (oclient->nsm_change) (m->ifaddr, m->nbraddr, m->router_id, m->status);
+    }
+}
+
+void
+ospf_apiclient_handle_lsa_update (struct ospf_apiclient *oclient,
+				  struct msg *msg)
+{
+  struct msg_lsa_change_notify *cn;
+  struct lsa_header *lsa;
+  int lsalen;
+
+  cn = (struct msg_lsa_change_notify *) STREAM_DATA (msg->s);
+
+  /* Extract LSA from message */
+  lsalen = ntohs (cn->data.length);
+  lsa = XMALLOC (MTYPE_OSPF_APICLIENT, lsalen);
+  if (!lsa)
+    {
+      fprintf (stderr, "LSA update: Cannot allocate memory for LSA\n");
+      return;
+    }
+  memcpy (lsa, &(cn->data), lsalen);
+
+  /* Invoke registered update callback function */
+  if (oclient->update_notify)
+    {
+      (oclient->update_notify) (cn->ifaddr, cn->area_id, 
+				cn->is_self_originated, lsa);
+    }
+
+  /* free memory allocated by ospf apiclient library */
+  XFREE (MTYPE_OSPF_APICLIENT, lsa);
+}
+
+void
+ospf_apiclient_handle_lsa_delete (struct ospf_apiclient *oclient,
+				  struct msg *msg)
+{
+  struct msg_lsa_change_notify *cn;
+  struct lsa_header *lsa;
+  int lsalen;
+
+  cn = (struct msg_lsa_change_notify *) STREAM_DATA (msg->s);
+
+  /* Extract LSA from message */
+  lsalen = ntohs (cn->data.length);
+  lsa = XMALLOC (MTYPE_OSPF_APICLIENT, lsalen);
+  if (!lsa)
+    {
+      fprintf (stderr, "LSA delete: Cannot allocate memory for LSA\n");
+      return;
+    }
+  memcpy (lsa, &(cn->data), lsalen);
+
+  /* Invoke registered update callback function */
+  if (oclient->delete_notify)
+    {
+      (oclient->delete_notify) (cn->ifaddr, cn->area_id, 
+				cn->is_self_originated, lsa);
+    }
+
+  /* free memory allocated by ospf apiclient library */
+  XFREE (MTYPE_OSPF_APICLIENT, lsa);
+}
+
+void
+ospf_apiclient_msghandle (struct ospf_apiclient *oclient, struct msg *msg)
+{
+  /* Call message handler function. */
+  switch (msg->hdr.msgtype)
+    {
+    case MSG_READY_NOTIFY:
+      ospf_apiclient_handle_ready (oclient, msg);
+      break;
+    case MSG_NEW_IF:
+      ospf_apiclient_handle_new_if (oclient, msg);
+      break;
+    case MSG_DEL_IF:
+      ospf_apiclient_handle_del_if (oclient, msg);
+      break;
+    case MSG_ISM_CHANGE:
+      ospf_apiclient_handle_ism_change (oclient, msg);
+      break;
+    case MSG_NSM_CHANGE:
+      ospf_apiclient_handle_nsm_change (oclient, msg);
+      break;
+    case MSG_LSA_UPDATE_NOTIFY:
+      ospf_apiclient_handle_lsa_update (oclient, msg);
+      break;
+    case MSG_LSA_DELETE_NOTIFY:
+      ospf_apiclient_handle_lsa_delete (oclient, msg);
+      break;
+    default:
+      fprintf (stderr, "ospf_apiclient_read: Unknown message type: %d\n",
+	       msg->hdr.msgtype);
+      break;
+    }
+}
+
+/* -----------------------------------------------------------
+ * Callback handler registration
+ * -----------------------------------------------------------
+ */
+
+void
+ospf_apiclient_register_callback (struct ospf_apiclient *oclient,
+				  void (*ready_notify) (u_char lsa_type,
+							u_char opaque_type,
+							struct in_addr addr),
+				  void (*new_if) (struct in_addr ifaddr,
+						  struct in_addr area_id),
+				  void (*del_if) (struct in_addr ifaddr),
+				  void (*ism_change) (struct in_addr ifaddr,
+						      struct in_addr area_id,
+						      u_char status),
+				  void (*nsm_change) (struct in_addr ifaddr,
+						      struct in_addr nbraddr,
+						      struct in_addr
+						      router_id,
+						      u_char status),
+				  void (*update_notify) (struct in_addr
+							 ifaddr,
+							 struct in_addr
+							 area_id,
+							 u_char self_origin,
+							 struct lsa_header *
+							 lsa),
+				  void (*delete_notify) (struct in_addr
+							 ifaddr,
+							 struct in_addr
+							 area_id,
+							 u_char self_origin,
+							 struct lsa_header *
+							 lsa))
+{
+  assert (oclient);
+  assert (update_notify);
+
+  /* Register callback function */
+  oclient->ready_notify = ready_notify;
+  oclient->new_if = new_if;
+  oclient->del_if = del_if;
+  oclient->ism_change = ism_change;
+  oclient->nsm_change = nsm_change;
+  oclient->update_notify = update_notify;
+  oclient->delete_notify = delete_notify;
+}
+
+/* -----------------------------------------------------------
+ * Asynchronous message handling
+ * -----------------------------------------------------------
+ */
+
+int
+ospf_apiclient_handle_async (struct ospf_apiclient *oclient)
+{
+  struct msg *msg;
+
+  /* Get a message */
+  msg = msg_read (oclient->fd_async);
+
+  if (!msg)
+    {
+      /* Connection broke down */
+      return -1;
+    }
+
+  /* Handle message */
+  ospf_apiclient_msghandle (oclient, msg);
+
+  /* Don't forget to free this message */
+  msg_free (msg);
+
+  return 0;
+}
diff --git a/ospfclient/ospf_apiclient.h b/ospfclient/ospf_apiclient.h
new file mode 100644
index 00000000..0e74787a
--- /dev/null
+++ b/ospfclient/ospf_apiclient.h
@@ -0,0 +1,135 @@
+/*
+ * Client side of OSPF API.
+ * Copyright (C) 2001, 2002, 2003 Ralph Keller
+ *
+ * This file is part of GNU Zebra.
+ * 
+ * GNU Zebra 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, or (at your
+ * option) any later version.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _OSPF_APICLIENT_H
+#define _OSPF_APICLIENT_H
+
+#define MTYPE_OSPF_APICLIENT 0
+
+/* Structure for the OSPF API client */
+struct ospf_apiclient
+{
+
+  /* Sockets for sync requests and async notifications */
+  int fd_sync;
+  int fd_async;
+
+  /* Pointer to callback functions */
+  void (*ready_notify) (u_char lsa_type, u_char opaque_type,
+			struct in_addr addr);
+  void (*new_if) (struct in_addr ifaddr, struct in_addr area_id);
+  void (*del_if) (struct in_addr ifaddr);
+  void (*ism_change) (struct in_addr ifaddr, struct in_addr area_id,
+		      u_char status);
+  void (*nsm_change) (struct in_addr ifaddr, struct in_addr nbraddr,
+		      struct in_addr router_id, u_char status);
+  void (*update_notify) (struct in_addr ifaddr, struct in_addr area_id,
+			 u_char self_origin,
+			 struct lsa_header * lsa);
+  void (*delete_notify) (struct in_addr ifaddr, struct in_addr area_id,
+			 u_char self_origin,
+			 struct lsa_header * lsa);
+};
+
+
+/* ---------------------------------------------------------
+ * API function prototypes.
+ * --------------------------------------------------------- */
+
+/* Open connection to OSPF daemon. Two ports will be allocated on
+   client, sync channel at syncport and reverse channel at syncport+1 */
+struct ospf_apiclient *ospf_apiclient_connect (char *host, int syncport);
+
+/* Shutdown connection to OSPF daemon. */
+int ospf_apiclient_close (struct ospf_apiclient *oclient);
+
+/* Synchronous request to register opaque type. */
+int ospf_apiclient_register_opaque_type (struct ospf_apiclient *oclient,
+					 u_char ltype, u_char otype);
+
+/* Synchronous request to register event mask. */
+int ospf_apiclient_register_events (struct ospf_apiclient *oclient,
+				    u_int32_t mask);
+
+/* Register callback functions.*/
+void ospf_apiclient_register_callback (struct ospf_apiclient *oclient,
+				       void (*ready_notify) (u_char lsa_type,
+							     u_char
+							     opaque_type,
+							     struct in_addr
+							     addr),
+				       void (*new_if) (struct in_addr ifaddr,
+						       struct in_addr
+						       area_id),
+				       void (*del_if) (struct in_addr ifaddr),
+				       void (*ism_change) (struct in_addr
+							   ifaddr,
+							   struct in_addr
+							   area_id,
+							   u_char status),
+				       void (*nsm_change) (struct in_addr
+							   ifaddr,
+							   struct in_addr
+							   nbraddr,
+							   struct in_addr
+							   router_id,
+							   u_char status),
+				       void (*update_notify) (struct in_addr
+							      ifaddr,
+							      struct in_addr
+							      area_id,
+							      u_char selforig,
+							      struct
+							      lsa_header *
+							      lsa),
+				       void (*delete_notify) (struct in_addr
+							      ifaddr,
+							      struct in_addr
+							      area_id,
+							      u_char selforig,
+							      struct
+							      lsa_header *
+							      lsa));
+
+/* Synchronous request to synchronize LSDB. */
+int ospf_apiclient_sync_lsdb (struct ospf_apiclient *oclient);
+
+/* Synchronous request to originate or update opaque LSA. */
+int
+ospf_apiclient_lsa_originate(struct ospf_apiclient *oclient,
+                             struct in_addr ifaddr,
+                             struct in_addr area_id,
+                             u_char lsa_type,
+                             u_char opaque_type, u_int32_t opaque_id,
+                             void *opaquedata, int opaquelen);
+
+
+/* Synchronous request to delete opaque LSA. Parameter opaque_id is in
+   host byte order */
+int ospf_apiclient_lsa_delete (struct ospf_apiclient *oclient,
+			       struct in_addr area_id, u_char lsa_type,
+			       u_char opaque_type, u_int32_t opaque_id);
+
+/* Fetch async message and handle it  */
+int ospf_apiclient_handle_async (struct ospf_apiclient *oclient);
+
+#endif /* _OSPF_APICLIENT_H */
diff --git a/ospfclient/ospfclient.c b/ospfclient/ospfclient.c
new file mode 100644
index 00000000..7321bf68
--- /dev/null
+++ b/ospfclient/ospfclient.c
@@ -0,0 +1,291 @@
+/* 
+ * Simple main program to demonstrate how OSPF API can be used.  
+ */
+
+/* The following includes are needed in all OSPF API client
+   applications */
+
+#include <zebra.h>
+#include "prefix.h" /* for ospf_asbr.h */
+
+#include "ospfd/ospfd.h"
+#include "ospfd/ospf_asbr.h"
+#include "ospfd/ospf_lsa.h"
+#include "ospfd/ospf_opaque.h"
+#include "ospfd/ospf_lsdb.h"
+#include "ospfd/ospf_dump.h"
+#include "ospfd/ospf_api.h"
+#include "ospf_apiclient.h"
+
+/* The following includes are specific to this main application. Here
+   main uses the thread functionality from libzebra (however an
+   application can use any thread library like pthreads) */
+
+#include "thread.h"
+#include "log.h"
+
+/* local portnumber for async channel */
+#define ASYNCPORT 4000
+
+/* Master thread */
+struct thread_master *master;
+
+/* Global variables */
+struct ospf_apiclient *oclient;
+char **args;
+
+/* Our opaque LSAs have the following format */
+struct my_opaque_lsa
+{
+  struct lsa_header hdr;
+  u_char data[4];
+};
+
+
+/* ---------------------------------------------------------
+ * Threads for asynchronous messages and LSA update/delete 
+ * ---------------------------------------------------------
+ */
+
+int
+lsa_delete (struct thread *t)
+{
+  struct ospf_apiclient *oclient;
+  struct in_addr area_id;
+  int rc;
+
+  oclient = THREAD_ARG (t);
+
+  inet_aton (args[6], &area_id);
+
+  printf ("Deleting LSA... ");
+  rc = ospf_apiclient_lsa_delete (oclient, 
+				  area_id, 
+				  atoi (args[2]),       /* lsa type */
+				  atoi (args[3]),	/* opaque type */
+				  atoi (args[4]));	/* opaque ID */
+  printf ("done, return code is = %d\n", rc);
+  return rc;
+}
+
+int
+lsa_inject (struct thread *t)
+{
+  struct ospf_apiclient *cl;
+  struct in_addr ifaddr;
+  struct in_addr area_id;
+  u_char lsa_type;
+  u_char opaque_type;
+  u_int32_t opaque_id;
+  void *opaquedata;
+  int opaquelen;
+
+  static u_int32_t counter = 1;	/* Incremented each time */
+  int rc;
+
+  cl = THREAD_ARG (t);
+
+  inet_aton (args[5], &ifaddr);
+  inet_aton (args[6], &area_id);
+  lsa_type = atoi (args[2]);
+  opaque_type = atoi (args[3]);
+  opaque_id = atoi (args[4]);
+  opaquedata = &counter;
+  opaquelen = sizeof (u_int32_t);
+
+  printf ("Originating/updating LSA with counter=%d... ", counter);
+  rc = ospf_apiclient_lsa_originate(cl, ifaddr, area_id,
+				    lsa_type,
+				    opaque_type, opaque_id,
+				    opaquedata, opaquelen);
+
+  printf ("done, return code is %d\n", rc);
+
+  counter++;
+
+  return 0;
+};
+
+
+/* This thread handles asynchronous messages coming in from the OSPF
+   API server */
+int
+lsa_read (struct thread *thread)
+{
+  struct ospf_apiclient *oclient;
+  int fd;
+  int ret;
+
+  printf ("lsa_read called\n");
+
+  oclient = THREAD_ARG (thread);
+  fd = THREAD_FD (thread);
+
+  /* Handle asynchronous message */
+  ret = ospf_apiclient_handle_async (oclient);
+  if (ret < 0) {
+    printf ("Connection closed, exiting...");
+    exit(0);
+  }
+
+  /* Reschedule read thread */
+  thread_add_read (master, lsa_read, oclient, fd);
+
+  return 0;
+}
+
+
+
+/* ---------------------------------------------------------
+ * Callback functions for asynchronous events 
+ * ---------------------------------------------------------
+ */
+
+void
+lsa_update_callback (struct in_addr ifaddr, struct in_addr area_id,
+		     u_char is_self_originated,
+		     struct lsa_header *lsa)
+{
+  printf ("lsa_update_callback: ");
+  printf ("ifaddr: %s ", inet_ntoa (ifaddr));
+  printf ("area: %s\n", inet_ntoa (area_id));
+  printf ("is_self_origin: %u\n", is_self_originated);
+
+  ospf_lsa_header_dump (lsa);
+}
+
+void
+lsa_delete_callback (struct in_addr ifaddr, struct in_addr area_id,
+		     u_char is_self_originated,
+		     struct lsa_header *lsa)
+{
+  printf ("lsa_delete_callback: ");
+  printf ("ifaddr: %s ", inet_ntoa (ifaddr));
+  printf ("area: %s\n", inet_ntoa (area_id));
+  printf ("is_self_origin: %u\n", is_self_originated);
+
+  ospf_lsa_header_dump (lsa);
+}
+
+void
+ready_callback (u_char lsa_type, u_char opaque_type, struct in_addr addr)
+{
+  printf ("ready_callback: lsa_type: %d opaque_type: %d addr=%s\n",
+	  lsa_type, opaque_type, inet_ntoa (addr));
+
+  /* Schedule opaque LSA originate in 5 secs */
+  thread_add_timer (master, lsa_inject, oclient, 5);
+
+  /* Schedule opaque LSA update with new value */
+  thread_add_timer (master, lsa_inject, oclient, 10);
+
+  /* Schedule delete */
+  thread_add_timer (master, lsa_delete, oclient, 30);
+}
+
+void
+new_if_callback (struct in_addr ifaddr, struct in_addr area_id)
+{
+  printf ("new_if_callback: ifaddr: %s ", inet_ntoa (ifaddr));
+  printf ("area_id: %s\n", inet_ntoa (area_id));
+}
+
+void
+del_if_callback (struct in_addr ifaddr)
+{
+  printf ("new_if_callback: ifaddr: %s\n ", inet_ntoa (ifaddr));
+}
+
+void
+ism_change_callback (struct in_addr ifaddr, struct in_addr area_id,
+		     u_char state)
+{
+  printf ("ism_change: ifaddr: %s ", inet_ntoa (ifaddr));
+  printf ("area_id: %s\n", inet_ntoa (area_id));
+  printf ("state: %d [%s]\n", state, LOOKUP (ospf_ism_state_msg, state));
+}
+
+void
+nsm_change_callback (struct in_addr ifaddr, struct in_addr nbraddr,
+		     struct in_addr router_id, u_char state)
+{
+  printf ("nsm_change: ifaddr: %s ", inet_ntoa (ifaddr));
+  printf ("nbraddr: %s\n", inet_ntoa (nbraddr));
+  printf ("router_id: %s\n", inet_ntoa (router_id));
+  printf ("state: %d [%s]\n", state, LOOKUP (ospf_nsm_state_msg, state));
+}
+
+
+/* ---------------------------------------------------------
+ * Main program 
+ * ---------------------------------------------------------
+ */
+
+int
+main (int argc, char *argv[])
+{
+  struct thread thread;
+
+  args = argv;
+
+  /* Main should be started with the following arguments:
+   * 
+   * (1) host (2) lsa_type (3) opaque_type (4) opaque_id (5) if_addr 
+   * (6) area_id
+   * 
+   * host: name or IP of host where ospfd is running
+   * lsa_type: 9, 10, or 11
+   * opaque_type: 0-255 (e.g., 140 for experimental Active Networking)
+   * opaque_id: arbitrary application instance (24 bits)
+   * if_addr: interface IP address (for type 9) otherwise ignored
+   * area_id: area in IP address format (for type 10) otherwise ignored
+   */
+
+  if (argc != 7)
+    {
+      printf ("main: wrong number of arguments!\n");
+      exit (1);
+    }
+
+  /* Initialization */
+  master = thread_master_create ();
+
+  /* Open connection to OSPF daemon */
+  oclient = ospf_apiclient_connect (args[1], ASYNCPORT);
+  if (!oclient)
+    {
+      printf ("main: connect failed!\n");
+      exit (1);
+    }
+
+  /* Register callback functions. */
+  ospf_apiclient_register_callback (oclient,
+				    ready_callback,
+				    new_if_callback,
+				    del_if_callback,
+				    ism_change_callback,
+				    nsm_change_callback,
+				    lsa_update_callback, 
+				    lsa_delete_callback);
+
+  /* Register LSA type and opaque type. */
+  ospf_apiclient_register_opaque_type (oclient, atoi (args[2]),
+				       atoi (args[3]));
+
+  /* Synchronize database with OSPF daemon. */
+  ospf_apiclient_sync_lsdb (oclient);
+
+  /* Schedule thread that handles asynchronous messages */
+  thread_add_read (master, lsa_read, oclient, oclient->fd_async);
+
+  /* Now connection is established, run loop */
+  while (1)
+    {
+      thread_fetch (master, &thread);
+      thread_call (&thread);
+    }
+
+  /* Never reached */
+  return 0;
+}
+