--- /dev/null
+README
+.deps
+.libs
+*.cache
+configure
+Makefile
+stamp-*
+*.la
+*.lo
+*.log
+*.so.2
+Makefile.in
+aclocal.m4
+config.guess
+config.h
+config.h.in
+config.rpath
+config.status
+config.sub
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing
--- /dev/null
+
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+ This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it. You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations
+below.
+
+ When we speak of free software, we are referring to freedom of use,
+not price. Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+ To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights. These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
+ For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you. You must make sure that they, too, receive or can get the source
+code. If you link other code with the library, you must provide
+complete object files to the recipients, so that they can relink them
+with the library after making changes to the library and recompiling
+it. And you must show them these terms so they know their rights.
+
+ We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+ To protect each distributor, we want to make it very clear that
+there is no warranty for the free library. Also, if the library is
+modified by someone else and passed on, the recipients should know
+that what they have is not the original version, so that the original
+author's reputation will not be affected by problems that might be
+introduced by others.
+\f
+ Finally, software patents pose a constant threat to the existence of
+any free program. We wish to make sure that a company cannot
+effectively restrict the users of a free program by obtaining a
+restrictive license from a patent holder. Therefore, we insist that
+any patent license obtained for a version of the library must be
+consistent with the full freedom of use specified in this license.
+
+ Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License. This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License. We use
+this license for certain libraries in order to permit linking those
+libraries into non-free programs.
+
+ When a program is linked with a library, whether statically or using
+a shared library, the combination of the two is legally speaking a
+combined work, a derivative of the original library. The ordinary
+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom. The Lesser General
+Public License permits more lax criteria for linking other code with
+the library.
+
+ We call this license the "Lesser" General Public License because it
+does Less to protect the user's freedom than the ordinary General
+Public License. It also provides other free software developers Less
+of an advantage over competing non-free programs. These disadvantages
+are the reason we use the ordinary General Public License for many
+libraries. However, the Lesser license provides advantages in certain
+special circumstances.
+
+ For example, on rare occasions, there may be a special need to
+encourage the widest possible use of a certain library, so that it
+becomes a de-facto standard. To achieve this, non-free programs must
+be allowed to use the library. A more frequent case is that a free
+library does the same job as widely used non-free libraries. In this
+case, there is little to gain by limiting the free library to free
+software only, so we use the Lesser General Public License.
+
+ In other cases, permission to use a particular library in non-free
+programs enables a greater number of people to use a large body of
+free software. For example, permission to use the GNU C Library in
+non-free programs enables many more people to use the whole GNU
+operating system, as well as its variant, the GNU/Linux operating
+system.
+
+ Although the Lesser General Public License is Less protective of the
+users' freedom, it does ensure that the user of a program that is
+linked with the Library has the freedom and the wherewithal to run
+that program using a modified version of the Library.
+
+ The precise terms and conditions for copying, distribution and
+modification follow. Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library". The
+former contains code derived from the library, whereas the latter must
+be combined with the library in order to run.
+\f
+ GNU LESSER GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
+other authorized party saying it may be distributed under the terms of
+this Lesser General Public License (also called "this License").
+Each licensee is addressed as "you".
+
+ A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+ The "Library", below, refers to any such software library or work
+which has been distributed under these terms. A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language. (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+ "Source code" for a work means the preferred form of the work for
+making modifications to it. For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control
+compilation and installation of the library.
+
+ Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it). Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+
+ 1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+ You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+\f
+ 2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) The modified work must itself be a software library.
+
+ b) You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ c) You must cause the whole of the work to be licensed at no
+ charge to all third parties under the terms of this License.
+
+ d) If a facility in the modified Library refers to a function or a
+ table of data to be supplied by an application program that uses
+ the facility, other than as an argument passed when the facility
+ is invoked, then you must make a good faith effort to ensure that,
+ in the event an application does not supply such function or
+ table, the facility still operates, and performs whatever part of
+ its purpose remains meaningful.
+
+ (For example, a function in a library to compute square roots has
+ a purpose that is entirely well-defined independent of the
+ application. Therefore, Subsection 2d requires that any
+ application-supplied function or table used by this function must
+ be optional: if the application does not supply it, the square
+ root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library. To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License. (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.) Do not make any other change in
+these notices.
+\f
+ Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+ This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+ 4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
+under the terms of Sections 1 and 2 above provided that you accompany
+it with the complete corresponding machine-readable source code, which
+must be distributed under the terms of Sections 1 and 2 above on a
+medium customarily used for software interchange.
+
+ If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 5. A program that contains no derivative of any portion of the
+Library, but is designed to work with the Library by being compiled or
+linked with it, is called a "work that uses the Library". Such a
+work, in isolation, is not a derivative work of the Library, and
+therefore falls outside the scope of this License.
+
+ However, linking a "work that uses the Library" with the Library
+creates an executable that is a derivative of the Library (because it
+contains portions of the Library), rather than a "work that uses the
+library". The executable is therefore covered by this License.
+Section 6 states terms for distribution of such executables.
+
+ When a "work that uses the Library" uses material from a header file
+that is part of the Library, the object code for the work may be a
+derivative work of the Library even though the source code is not.
+Whether this is true is especially significant if the work can be
+linked without the Library, or if the work is itself a library. The
+threshold for this to be true is not precisely defined by law.
+
+ If such an object file uses only numerical parameters, data
+structure layouts and accessors, and small macros and small inline
+functions (ten lines or less in length), then the use of the object
+file is unrestricted, regardless of whether it is legally a derivative
+work. (Executables containing this object code plus portions of the
+Library will still fall under Section 6.)
+
+ Otherwise, if the work is a derivative of the Library, you may
+distribute the object code for the work under the terms of Section 6.
+Any executables containing that work also fall under Section 6,
+whether or not they are linked directly with the Library itself.
+\f
+ 6. As an exception to the Sections above, you may also combine or
+link a "work that uses the Library" with the Library to produce a
+work containing portions of the Library, and distribute that work
+under terms of your choice, provided that the terms permit
+modification of the work for the customer's own use and reverse
+engineering for debugging such modifications.
+
+ You must give prominent notice with each copy of the work that the
+Library is used in it and that the Library and its use are covered by
+this License. You must supply a copy of this License. If the work
+during execution displays copyright notices, you must include the
+copyright notice for the Library among them, as well as a reference
+directing the user to the copy of this License. Also, you must do one
+of these things:
+
+ a) Accompany the work with the complete corresponding
+ machine-readable source code for the Library including whatever
+ changes were used in the work (which must be distributed under
+ Sections 1 and 2 above); and, if the work is an executable linked
+ with the Library, with the complete machine-readable "work that
+ uses the Library", as object code and/or source code, so that the
+ user can modify the Library and then relink to produce a modified
+ executable containing the modified Library. (It is understood
+ that the user who changes the contents of definitions files in the
+ Library will not necessarily be able to recompile the application
+ to use the modified definitions.)
+
+ b) Use a suitable shared library mechanism for linking with the
+ Library. A suitable mechanism is one that (1) uses at run time a
+ copy of the library already present on the user's computer system,
+ rather than copying library functions into the executable, and (2)
+ will operate properly with a modified version of the library, if
+ the user installs one, as long as the modified version is
+ interface-compatible with the version that the work was made with.
+
+ c) Accompany the work with a written offer, valid for at least
+ three years, to give the same user the materials specified in
+ Subsection 6a, above, for a charge no more than the cost of
+ performing this distribution.
+
+ d) If distribution of the work is made by offering access to copy
+ from a designated place, offer equivalent access to copy the above
+ specified materials from the same place.
+
+ e) Verify that the user has already received a copy of these
+ materials or that you have already sent this user a copy.
+
+ For an executable, the required form of the "work that uses the
+Library" must include any data and utility programs needed for
+reproducing the executable from it. However, as a special exception,
+the materials to be distributed need not include anything that is
+normally distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies
+the executable.
+
+ It may happen that this requirement contradicts the license
+restrictions of other proprietary libraries that do not normally
+accompany the operating system. Such a contradiction means you cannot
+use both them and the Library together in an executable that you
+distribute.
+\f
+ 7. You may place library facilities that are a work based on the
+Library side-by-side in a single library together with other library
+facilities not covered by this License, and distribute such a combined
+library, provided that the separate distribution of the work based on
+the Library and of the other library facilities is otherwise
+permitted, and provided that you do these two things:
+
+ a) Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library
+ facilities. This must be distributed under the terms of the
+ Sections above.
+
+ b) Give prominent notice with the combined library of the fact
+ that part of it is a work based on the Library, and explaining
+ where to find the accompanying uncombined form of the same work.
+
+ 8. You may not copy, modify, sublicense, link with, or distribute
+the Library except as expressly provided under this License. Any
+attempt otherwise to copy, modify, sublicense, link with, or
+distribute the Library is void, and will automatically terminate your
+rights under this License. However, parties who have received copies,
+or rights, from you under this License will not have their licenses
+terminated so long as such parties remain in full compliance.
+
+ 9. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Library or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Library (or any work based on the
+Library), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Library or works based on it.
+
+ 10. Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the
+original licensor to copy, distribute, link with or modify the Library
+subject to these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties with
+this License.
+\f
+ 11. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Library at all. For example, if a patent
+license would not permit royalty-free redistribution of the Library by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply, and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License
+may add an explicit geographical distribution limitation excluding those
+countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 13. The Free Software Foundation may publish revised and/or new
+versions of the Lesser General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation. If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+\f
+ 14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission. For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this. Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+ NO WARRANTY
+
+ 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+\f
+ How to Apply These Terms to Your New Libraries
+
+ If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change. You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms
+of the ordinary General Public License).
+
+ To apply these terms, attach the following notices to the library.
+It is safest to attach them to the start of each source file to most
+effectively convey the exclusion of warranty; and each file should
+have at least the "copyright" line and a pointer to where the full
+notice is found.
+
+
+ <one line to give the library's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or
+your school, if any, to sign a "copyright disclaimer" for the library,
+if necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the
+ library `Frob' (a library for tweaking knobs) written by James
+ Random Hacker.
+
+ <signature of Ty Coon>, 1 April 1990
+ Ty Coon, President of Vice
+
+That's all there is to it!
+
+
--- /dev/null
+# This file is part of nss-myhostname.
+#
+# Copyright 2008 Lennart Poettering
+#
+# nss-myhostname is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation, either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# nss-myhostname 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with nss-myhostname. If not, If not, see
+# <http://www.gnu.org/licenses/>.
+
+ACLOCAL_AMFLAGS = -I m4
+
+lib_LTLIBRARIES = libnss_myhostname.la
+
+EXTRA_DIST=bootstrap.sh README LICENSE
+SUBDIRS=doc
+
+AM_CPPFLAGS = -include $(top_builddir)/config.h
+
+MAINTAINERCLEANFILES=README
+noinst_DATA = README
+
+README:
+ rm -f README
+ $(MAKE) -C doc README
+ cd $(srcdir) && ln -s doc/README README
+
+homepage: all dist
+ test -d $$HOME/homepage/private
+ mkdir -p $$HOME/homepage/private/projects/nss-myhostname
+ cp nss-myhostname-@PACKAGE_VERSION@.tar.gz doc/README.html doc/style.css $$HOME/homepage/private/projects/nss-myhostname
+ ln -sf README.html $$HOME/homepage/private/projects/nss-myhostname/index.html
+
+.PHONY: homepage
+
+libnss_myhostname_la_SOURCES = \
+ nss-myhostname.c \
+ ifconf.h
+
+if LEGACY
+libnss_myhostname_la_SOURCES += legacy.c
+else
+libnss_myhostname_la_SOURCES += netlink.c
+endif
+
+libnss_myhostname_la_LDFLAGS = \
+ -avoid-version \
+ -module \
+ -export-dynamic \
+ -shrext .so.2
+
+install-exec-hook:
+ rm -f $(DESTDIR)$(libdir)/libnss_myhostname.la
+ rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.la
+
+uninstall-hook:
+ rm -f $(DESTDIR)$(libdir)/libnss_myhostname.so.2
+ rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.so.2
--- /dev/null
+#!/bin/bash
+
+# This file is part of nss-myhostname.
+#
+# Copyright 2008 Lennart Poettering
+#
+# nss-myhostname is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation, either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# nss-myhostname 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with nss-myhostname. If not, If not, see
+# <http://www.gnu.org/licenses/>.
+
+VERSION=1.9
+
+run_versioned() {
+ local P
+ local V
+
+ V=$(echo "$2" | sed -e 's,\.,,g')
+
+ if [ -e "`which $1$V 2> /dev/null`" ] ; then
+ P="$1$V"
+ else
+ if [ -e "`which $1-$2 2> /dev/null`" ] ; then
+ P="$1-$2"
+ else
+ P="$1"
+ fi
+ fi
+
+ shift 2
+ "$P" "$@"
+}
+
+set -ex
+
+if [ "x$1" = "xam" ] ; then
+ run_versioned automake "$VERSION" -a -c --foreign
+ ./config.status
+else
+ rm -rf autom4te.cache
+ rm -f config.cache
+
+ touch config.rpath
+ test "x$LIBTOOLIZE" = "x" && LIBTOOLIZE=libtoolize
+
+ mkdir -p m4
+ "$LIBTOOLIZE" -c --force
+ run_versioned aclocal "$VERSION" -I m4
+ run_versioned autoconf 2.59 -Wall
+ run_versioned autoheader 2.59
+ run_versioned automake "$VERSION" --copy --foreign --add-missing
+
+ if test "x$NOCONFIGURE" = "x"; then
+ CFLAGS="-g -O0" ./configure --sysconfdir=/etc --localstatedir=/var "$@"
+ make clean
+ fi
+fi
--- /dev/null
+# -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+# This file is part of nss-myhostname.
+#
+# Copyright 2008 Lennart Poettering
+#
+# nss-myhostname is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation, either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# nss-myhostname 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with nss-myhostname. If not, If not, see
+# <http://www.gnu.org/licenses/>.
+
+AC_PREREQ(2.62)
+AC_INIT([nss-myhostname],[0.3],[mzzlubfganzr (at) 0pointer (dot) de])
+AC_CONFIG_SRCDIR([nss-myhostname.c])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR(m4)
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
+
+AM_INIT_AUTOMAKE([foreign 1.9 -Wall -Wno-portability silent-rules tar-pax subdir-objects dist-bzip2])
+
+AC_SUBST(PACKAGE_URL, [http://0pointer.de/lennart/projects/nss-myhostname/])
+
+ac_default_prefix="/"
+
+AC_CANONICAL_HOST
+case "$host_os" in
+ linux*) legacy=false ;;
+ *) legacy=true ;;
+esac
+AM_CONDITIONAL([LEGACY], [test x$legacy = xtrue])
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_CC_C99
+AC_PROG_CPP
+
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+
+# GCC flags
+
+DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math -fvisibility=hidden -fdiagnostics-show-option"
+
+for flag in $DESIRED_FLAGS ; do
+ CC_CHECK_CFLAGS([$flag], [CFLAGS="$CFLAGS $flag"])
+done
+
+# libtool stuff
+AC_DISABLE_STATIC
+LT_PREREQ(2.2)
+LT_INIT
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h unistd.h nss.h sys/ioctl.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_SIZE_T
+AC_HEADER_TIME
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_FUNC_SELECT_ARGTYPES
+AC_CHECK_FUNCS([gethostbyaddr gethostbyname gettimeofday inet_ntoa memset select socket strcspn strdup strerror strncasecmp strcasecmp strspn])
+
+# LYNX documentation generation
+ZP_LYNX_DOC
+
+AC_CONFIG_FILES([Makefile doc/Makefile doc/README.html ])
+
+AC_OUTPUT
--- /dev/null
+README
+README.html
--- /dev/null
+# This file is part of nss-myhostname.
+#
+# Copyright 2008 Lennart Poettering
+#
+# nss-myhostname is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation, either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# nss-myhostname 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with nss-myhostname. If not, If not, see
+# <http://www.gnu.org/licenses/>.
+
+dist_html_DATA = README.html style.css
+EXTRA_DIST = README.html.in
+
+MAINTAINERCLEANFILES = README.html
+CLEANFILES =
+
+if USE_LYNX
+dist_doc_DATA = README
+MAINTAINERCLEANFILES += README
+
+README: README.html
+ lynx --dump $^ | sed 's,file://localhost/.*/doc/README.html,README,' > $@
+
+CLEANFILES += README
+endif
+
+tidy: README.html
+ tidy -qe < README.html ; true
+
+.PHONY: tidy
--- /dev/null
+<?xml version="1.0" encoding="iso-8859-1"?> <!-- -*-html-helper-*- -->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+<title>nss-myhostname @PACKAGE_VERSION@</title>
+<link rel="stylesheet" type="text/css" href="style.css" />
+</head>
+
+<body>
+<h1><a name="top">nss-myhostname @PACKAGE_VERSION@</a></h1>
+
+<p><i>Copyright 2005-2011 Lennart Poettering <@PACKAGE_BUGREPORT@></i></p>
+
+<ul class="toc">
+ <li><a href="#license">License</a></li>
+ <li><a href="#news">News</a></li>
+ <li><a href="#overview">Overview</a></li>
+ <li><a href="#status">Current Status</a></li>
+ <li><a href="#documentation">Documentation</a></li>
+ <li><a href="#requirements">Requirements</a></li>
+ <li><a href="#installation">Installation</a></li>
+ <li><a href="#acks">Acknowledgements</a></li>
+ <li><a href="#download">Download</a></li>
+</ul>
+
+<h2><a name="license">License</a></h2>
+
+<p>This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public License as
+published by the Free Software Foundation, either version 2.1 of the
+License, or (at your option) any later version.</p>
+
+<p>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
+Lesser General Public License for more details.</p>
+
+<h2><a name="news">News</a></h2>
+
+<div class="news-date">Mon May 9 2011: </div>
+
+<p class="news-text"><a href="@PACKAGE_URL@nss-myhostname-0.3.tar.gz">Version
+0.3</a> released. Changes include: Always return locally configured IP
+addresses first, use 127.0.0.2/::1 only as fallback if no addresses
+are configured.</p>
+
+<div class="news-date">Mon Oct 27 2008: </div>
+
+<p class="news-text"><a
+href="@PACKAGE_URL@nss-myhostname-0.2.tar.gz">Version 0.2</a>
+released. Changes include: Update for IPv6 and newest glibc NSS interfaces</p>
+
+<div class="news-date">Sat Nov 19 2005: </div>
+
+<p class="news-text"><a
+href="@PACKAGE_URL@nss-myhostname-0.1.tar.gz">Version 0.1</a>
+released. Initial release.</p>
+
+<h2><a name="overview">Overview</a></h2>
+
+<p><tt>nss-myhostname</tt> is a plugin for the GNU Name Service Switch
+(NSS) functionality of the GNU C Library (<tt>glibc</tt>) providing
+host name resolution for the locally configured system hostname as
+returned by <tt>gethostname(2)</tt>. Various software relies on an
+always resolvable local host name. When using dynamic hostnames this
+is usually achieved by patching <tt>/etc/hosts</tt> at the same time
+as changing the host name. This however is not ideal since it requires
+a writable <tt>/etc</tt> file system and is fragile because the file
+might be edited by the administrator at the same
+time. <tt>nss-myhostname</tt> simply returns all locally configure
+public IP addresses, or -- if none are configured -- the IPv4
+address <tt>127.0.0.2</tt> (wich is on the local loopback) and the
+IPv6 address <tt>::1</tt> (which is the local host) for whatever
+system hostname is configured locally. Patching <tt>/etc/hosts</tt>
+is thus no longer necessary.</p>
+
+<h2><a name="status">Current Status</a></h2>
+
+<p>It works!</p>
+
+<h2><a name="documentation">Documentation</a></h2>
+
+<p>After compiling and installing <tt>nss-myhostname</tt> you'll find a
+new NSS modules in <tt>/lib</tt>:</p>
+<ul>
+<li><tt>libnss_myhostname.so.2</tt></li>
+</ul>
+
+<p>To activate the NSS modules you have to edit
+<tt>/etc/nsswitch.conf</tt> and add <tt>myhostname</tt> to the
+line starting with "<tt>hosts:</tt>". On Debian this looks like
+this:</p>
+
+<pre># /etc/nsswitch.conf
+
+passwd: compat
+group: compat
+shadow: compat
+
+hosts: files dns <b>myhostname</b>
+networks: files
+
+protocols: db files
+services: db files
+ethers: db files
+rpc: db files
+
+netgroup: nis</pre>
+
+<p>That's it. You should now always be able to resolve your local
+system hostname. For a quick check
+use <tt>glibc</tt>'s <tt>getent</tt> tool:
+
+<pre>$ getent ahosts `hostname`
+::1 STREAM omega
+::1 DGRAM
+::1 RAW
+127.0.0.2 STREAM
+127.0.0.2 DGRAM
+127.0.0.2 RAW
+</pre>
+
+<p>In this case the local host name is <i>omega</i>.</p>
+
+<p>It is recommended to put <tt>myhostname</tt> last in
+the <tt>nsswitch.conf</tt> line to make sure that this mapping is only
+used as fallback, and any DNS or <tt>/etc/hosts</tt> based mapping takes
+precedence.</p>
+
+<h2><a name="requirements">Requirements</a></h2>
+
+<p><tt>nss-myhostname</tt> uses NSS interfaces that are specific to modern <tt>glibc</tt>'s.</p>
+
+<p><tt>nss-myhostname</tt> was developed and tested on Fedora 15 from
+May 2011, it should work on most other Linux distributions since it
+uses GNU autoconf and GNU libtool for source code configuration and
+shared library management.</p>
+
+<h2><a name="installation">Installation</a></h2>
+
+<p>As this package is made with the GNU autotools you should run
+<tt>./configure</tt> inside the distribution directory for configuring
+the source tree. After that you should run <tt>make</tt> for
+compilation and <tt>make install</tt> (as root) for installation of
+<tt>nss-myhostname</tt>.</p>
+
+<h2><a name="acks">Acknowledgements</a></h2>
+
+<p>None so far.</p>
+
+<h2><a name="download">Download</a></h2>
+
+<p>The newest release is always available from <a href="@PACKAGE_URL@">@PACKAGE_URL@</a></p>
+
+<p>The current release is <a href="@PACKAGE_URL@nss-myhostname-@PACKAGE_VERSION@.tar.gz">@PACKAGE_VERSION@</a></p>
+
+<p>Get <tt>nss-myhostname</tt>'s development sources from the <a href="http://git.or.cz/">GIT</a> <a href="git://git.0pointer.de/nss-myhostname">repository</a> (<a href="http://git.0pointer.de/?p=nss-myhostname.git">gitweb</a>): </p>
+
+<pre>git clone git://git.0pointer.de/nss-myhostname</pre>
+
+<hr/>
+<address class="grey">Lennart Poettering <@PACKAGE_BUGREPORT@>, May 2011</address>
+
+</body>
+</html>
--- /dev/null
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008 Lennart Poettering
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation, either version 2.1
+ of the License, or (at your option) any later version.
+
+ nss-myhostname 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname. If not, If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+body { color: black; background-color: white; }
+a:link, a:visited { color: #900000; }
+div.news-date { font-size: 80%; font-style: italic; }
+pre { background-color: #f0f0f0; padding: 0.4cm; }
+.grey { color: #8f8f8f; font-size: 80%; }
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef fooifconfhfoo
+#define fooifconfhfoo
+
+#include <sys/socket.h>
+
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008-2011 Lennart Poettering
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ nss-myhostname 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname; If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <inttypes.h>
+#include <sys/types.h>
+#include <assert.h>
+
+struct address {
+ unsigned char family;
+ uint8_t address[16];
+ unsigned char scope;
+ int ifindex;
+};
+
+#define _public_ __attribute__ ((visibility("default")))
+#define _hidden_ __attribute__ ((visibility("hidden")))
+
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
+
+static inline size_t PROTO_ADDRESS_SIZE(int proto) {
+ assert(proto == AF_INET || proto == AF_INET6);
+
+ return proto == AF_INET6 ? 16 : 4;
+}
+
+static inline int address_compare(const void *_a, const void *_b) {
+ const struct address *a = _a, *b = _b;
+
+ /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
+
+ if (a->scope < b->scope)
+ return -1;
+ if (a->scope > b->scope)
+ return 1;
+
+ if (a->family == AF_INET && b->family == AF_INET6)
+ return -1;
+ if (a->family == AF_INET6 && b->family == AF_INET)
+ return 1;
+
+ if (a->ifindex < b->ifindex)
+ return -1;
+ if (a->ifindex > b->ifindex)
+ return 1;
+
+ return 0;
+}
+
+
+#endif
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008-2011 Lennart Poettering
+ Copyright 2011 Robert millan
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ nss-myhostname 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname; If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+#include <errno.h>
+#include <ifaddrs.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netinet/in.h>
+
+#include "ifconf.h"
+
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
+ struct address *list = NULL;
+ unsigned n_list = 0;
+ struct ifaddrs *ifa = NULL;
+ int r = 1;
+ struct ifaddrs *i;
+ int ifindex = 0;
+
+ if (getifaddrs(&ifa) == -1) {
+ r = -errno;
+ goto finish;
+ }
+
+ for (i = ifa; i != NULL; i = i->ifa_next) {
+ int af;
+ const void *cp;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) i->ifa_addr;
+ struct sockaddr_in *in = (struct sockaddr_in *) i->ifa_addr;
+
+ if (! i->ifa_addr)
+ continue;
+
+ af = i->ifa_addr->sa_family;
+
+ if (af != AF_INET && af != AF_INET6)
+ continue;
+
+ list = realloc(list, (n_list+1) * sizeof(struct address));
+ if (!list) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (af == AF_INET6)
+ cp = &in6->sin6_addr;
+ else
+ cp = &in->sin_addr;
+
+ list[n_list].family = af;
+ list[n_list].scope = 0;
+ memcpy(list[n_list].address, cp, PROTO_ADDRESS_SIZE(af));
+ list[n_list].ifindex = ifindex++;
+ n_list++;
+ }
+
+finish:
+ if (ifa)
+ freeifaddrs(ifa);
+
+ if (r < 0)
+ free(list);
+ else {
+ qsort(list, n_list, sizeof(struct address), address_compare);
+
+ *_list = list;
+ *_n_list = n_list;
+ }
+
+ return r;
+}
--- /dev/null
+dnl Macros to check the presence of generic (non-typed) symbols.
+dnl Copyright (c) 2006-2007 Diego Pettenò <flameeyes@gmail.com>
+dnl Copyright (c) 2006-2007 xine project
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2, or (at your option)
+dnl any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+dnl 02110-1301, USA.
+dnl
+dnl As a special exception, the copyright owners of the
+dnl macro gives unlimited permission to copy, distribute and modify the
+dnl configure scripts that are the output of Autoconf when processing the
+dnl Macro. You need not follow the terms of the GNU General Public
+dnl License when using or distributing such scripts, even though portions
+dnl of the text of the Macro appear in them. The GNU General Public
+dnl License (GPL) does govern all other use of the material that
+dnl constitutes the Autoconf Macro.
+dnl
+dnl This special exception to the GPL applies to versions of the
+dnl Autoconf Macro released by this project. When you make and
+dnl distribute a modified version of the Autoconf Macro, you may extend
+dnl this special exception to the GPL to apply to your modified version as
+dnl well.
+
+AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [
+ AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]),
+ [ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $1"
+ AC_COMPILE_IFELSE([int a;],
+ [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"],
+ [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"])
+ CFLAGS="$ac_save_CFLAGS"
+ ])
+
+ AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
+ [$2], [$3])
+])
+
+AC_DEFUN([CC_CHECK_CFLAGS], [
+ AC_CACHE_CHECK([if $CC supports $1 flag],
+ AS_TR_SH([cc_cv_cflags_$1]),
+ CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here!
+ )
+
+ AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
+ [$2], [$3])
+])
+
+AC_DEFUN([CC_CHECK_LDFLAGS], [
+ AC_CACHE_CHECK([if $CC supports $1 flag],
+ AS_TR_SH([cc_cv_ldflags_$1]),
+ [ac_save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $1"
+ AC_LINK_IFELSE([int main() { return 1; }],
+ [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"],
+ [eval "AS_TR_SH([cc_cv_ldflags_$1])="])
+ LDFLAGS="$ac_save_LDFLAGS"
+ ])
+
+ AS_IF([eval test x$]AS_TR_SH([cc_cv_ldflags_$1])[ = xyes],
+ [$2], [$3])
+])
+
+dnl Check for a -Werror flag or equivalent. -Werror is the GCC
+dnl and ICC flag that tells the compiler to treat all the warnings
+dnl as fatal. We usually need this option to make sure that some
+dnl constructs (like attributes) are not simply ignored.
+dnl
+dnl Other compilers don't support -Werror per se, but they support
+dnl an equivalent flag:
+dnl - Sun Studio compiler supports -errwarn=%all
+AC_DEFUN([CC_CHECK_WERROR], [
+ AC_CACHE_CHECK(
+ [for $CC way to treat warnings as errors],
+ [cc_cv_werror],
+ [CC_CHECK_CFLAGS_SILENT([-Werror], [cc_cv_werror=-Werror],
+ [CC_CHECK_CFLAGS_SILENT([-errwarn=%all], [cc_cv_werror=-errwarn=%all])])
+ ])
+])
+
+AC_DEFUN([CC_CHECK_ATTRIBUTE], [
+ AC_REQUIRE([CC_CHECK_WERROR])
+ AC_CACHE_CHECK([if $CC supports __attribute__(( ifelse([$2], , [$1], [$2]) ))],
+ AS_TR_SH([cc_cv_attribute_$1]),
+ [ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $cc_cv_werror"
+ AC_COMPILE_IFELSE([$3],
+ [eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"],
+ [eval "AS_TR_SH([cc_cv_attribute_$1])='no'"])
+ CFLAGS="$ac_save_CFLAGS"
+ ])
+
+ AS_IF([eval test x$]AS_TR_SH([cc_cv_attribute_$1])[ = xyes],
+ [AC_DEFINE(
+ AS_TR_CPP([SUPPORT_ATTRIBUTE_$1]), 1,
+ [Define this if the compiler supports __attribute__(( ifelse([$2], , [$1], [$2]) ))]
+ )
+ $4],
+ [$5])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_CONSTRUCTOR], [
+ CC_CHECK_ATTRIBUTE(
+ [constructor],,
+ [void __attribute__((constructor)) ctor() { int a; }],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_FORMAT], [
+ CC_CHECK_ATTRIBUTE(
+ [format], [format(printf, n, n)],
+ [void __attribute__((format(printf, 1, 2))) printflike(const char *fmt, ...) { fmt = (void *)0; }],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_FORMAT_ARG], [
+ CC_CHECK_ATTRIBUTE(
+ [format_arg], [format_arg(printf)],
+ [char *__attribute__((format_arg(1))) gettextlike(const char *fmt) { fmt = (void *)0; }],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_VISIBILITY], [
+ CC_CHECK_ATTRIBUTE(
+ [visibility_$1], [visibility("$1")],
+ [void __attribute__((visibility("$1"))) $1_function() { }],
+ [$2], [$3])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_NONNULL], [
+ CC_CHECK_ATTRIBUTE(
+ [nonnull], [nonnull()],
+ [void __attribute__((nonnull())) some_function(void *foo, void *bar) { foo = (void*)0; bar = (void*)0; }],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_UNUSED], [
+ CC_CHECK_ATTRIBUTE(
+ [unused], ,
+ [void some_function(void *foo, __attribute__((unused)) void *bar);],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_SENTINEL], [
+ CC_CHECK_ATTRIBUTE(
+ [sentinel], ,
+ [void some_function(void *foo, ...) __attribute__((sentinel));],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_DEPRECATED], [
+ CC_CHECK_ATTRIBUTE(
+ [deprecated], ,
+ [void some_function(void *foo, ...) __attribute__((deprecated));],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_ALIAS], [
+ CC_CHECK_ATTRIBUTE(
+ [alias], [weak, alias],
+ [void other_function(void *foo) { }
+ void some_function(void *foo) __attribute__((weak, alias("other_function")));],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_MALLOC], [
+ CC_CHECK_ATTRIBUTE(
+ [malloc], ,
+ [void * __attribute__((malloc)) my_alloc(int n);],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_PACKED], [
+ CC_CHECK_ATTRIBUTE(
+ [packed], ,
+ [struct astructure { char a; int b; long c; void *d; } __attribute__((packed));],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_CONST], [
+ CC_CHECK_ATTRIBUTE(
+ [const], ,
+ [int __attribute__((const)) twopow(int n) { return 1 << n; } ],
+ [$1], [$2])
+])
+
+AC_DEFUN([CC_FLAG_VISIBILITY], [
+ AC_REQUIRE([CC_CHECK_WERROR])
+ AC_CACHE_CHECK([if $CC supports -fvisibility=hidden],
+ [cc_cv_flag_visibility],
+ [cc_flag_visibility_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $cc_cv_werror"
+ CC_CHECK_CFLAGS_SILENT([-fvisibility=hidden],
+ cc_cv_flag_visibility='yes',
+ cc_cv_flag_visibility='no')
+ CFLAGS="$cc_flag_visibility_save_CFLAGS"])
+
+ AS_IF([test "x$cc_cv_flag_visibility" = "xyes"],
+ [AC_DEFINE([SUPPORT_FLAG_VISIBILITY], 1,
+ [Define this if the compiler supports the -fvisibility flag])
+ $1],
+ [$2])
+])
+
+AC_DEFUN([CC_FUNC_EXPECT], [
+ AC_REQUIRE([CC_CHECK_WERROR])
+ AC_CACHE_CHECK([if compiler has __builtin_expect function],
+ [cc_cv_func_expect],
+ [ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $cc_cv_werror"
+ AC_COMPILE_IFELSE(
+ [int some_function() {
+ int a = 3;
+ return (int)__builtin_expect(a, 3);
+ }],
+ [cc_cv_func_expect=yes],
+ [cc_cv_func_expect=no])
+ CFLAGS="$ac_save_CFLAGS"
+ ])
+
+ AS_IF([test "x$cc_cv_func_expect" = "xyes"],
+ [AC_DEFINE([SUPPORT__BUILTIN_EXPECT], 1,
+ [Define this if the compiler supports __builtin_expect() function])
+ $1],
+ [$2])
+])
+
+AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [
+ AC_REQUIRE([CC_CHECK_WERROR])
+ AC_CACHE_CHECK([highest __attribute__ ((aligned ())) supported],
+ [cc_cv_attribute_aligned],
+ [ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $cc_cv_werror"
+ for cc_attribute_align_try in 64 32 16 8 4 2; do
+ AC_COMPILE_IFELSE([
+ int main() {
+ static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0;
+ return c;
+ }], [cc_cv_attribute_aligned=$cc_attribute_align_try; break])
+ done
+ CFLAGS="$ac_save_CFLAGS"
+ ])
+
+ if test "x$cc_cv_attribute_aligned" != "x"; then
+ AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX], [$cc_cv_attribute_aligned],
+ [Define the highest alignment supported])
+ fi
+])
--- /dev/null
+dnl Macro for enabling LYNX-based documentation generation
+
+AC_DEFUN([ZP_LYNX_DOC], [
+ AC_ARG_ENABLE(lynx,
+ AS_HELP_STRING([--disable-lynx],
+ [Turn off lynx usage for documentation generation]),,
+ [enable_lynx=yes])
+
+ case "${enable_lynx}" in
+ yes)
+ AC_CHECK_PROG(have_lynx, lynx, yes, no)
+
+ if test x$have_lynx = xno ; then
+ AC_MSG_WARN([*** lynx not found, plain text README will not be built ***])
+ fi
+ ;;
+ no)
+ have_lynx=no ;;
+ *)
+ AC_MSG_ERROR(bad value ${enableval} for --disable-lynx) ;;
+ esac
+
+ AM_CONDITIONAL([USE_LYNX], [test "x$have_lynx" = xyes])
+])
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008-2011 Lennart Poettering
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ nss-myhostname 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname; If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <asm/types.h>
+#include <inttypes.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <stdlib.h>
+
+#include "ifconf.h"
+
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
+
+ struct {
+ struct nlmsghdr hdr;
+ struct rtgenmsg gen;
+ } req;
+ struct rtgenmsg *gen;
+ int fd, r, on = 1;
+ uint32_t seq = 4711;
+ struct address *list = NULL;
+ unsigned n_list = 0;
+
+ fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
+ if (fd < 0)
+ return -errno;
+
+ if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ memset(&req, 0, sizeof(req));
+ req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg));
+ req.hdr.nlmsg_type = RTM_GETADDR;
+ req.hdr.nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP|NLM_F_ACK;
+ req.hdr.nlmsg_seq = seq;
+ req.hdr.nlmsg_pid = 0;
+
+ gen = NLMSG_DATA(&req.hdr);
+ gen->rtgen_family = AF_UNSPEC;
+
+ if (send(fd, &req, req.hdr.nlmsg_len, 0) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ for (;;) {
+ ssize_t bytes;
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ struct ucred *ucred;
+ struct iovec iov;
+ struct nlmsghdr *p;
+ uint8_t cred_buffer[CMSG_SPACE(sizeof(struct ucred))];
+ struct {
+ struct nlmsghdr hdr;
+ struct ifaddrmsg ifaddrmsg;
+ uint8_t payload[16*1024];
+ } resp;
+
+ memset(&iov, 0, sizeof(iov));
+ iov.iov_base = &resp;
+ iov.iov_len = sizeof(resp);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.msg_name = NULL;
+ msg.msg_namelen = 0;
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = cred_buffer;
+ msg.msg_controllen = sizeof(cred_buffer);
+ msg.msg_flags = 0;
+
+ bytes = recvmsg(fd, &msg, 0);
+ if (bytes < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ if (!cmsg || cmsg->cmsg_type != SCM_CREDENTIALS) {
+ r = -EIO;
+ goto finish;
+ }
+
+ ucred = (struct ucred*) CMSG_DATA(cmsg);
+ if (ucred->uid != 0 || ucred->pid != 0)
+ continue;
+
+ for (p = &resp.hdr; bytes > 0; p = NLMSG_NEXT(p, bytes)) {
+ struct ifaddrmsg *ifaddrmsg;
+ struct rtattr *a;
+ size_t l;
+ void *local = NULL, *address = NULL;
+
+ if (!NLMSG_OK(p, (size_t) bytes)) {
+ r = -EIO;
+ goto finish;
+ }
+
+ if (p->nlmsg_seq != seq)
+ continue;
+
+ if (p->nlmsg_type == NLMSG_DONE) {
+ r = 0;
+ goto finish;
+ }
+
+ if (p->nlmsg_type == NLMSG_ERROR) {
+ struct nlmsgerr *nlmsgerr;
+
+ nlmsgerr = NLMSG_DATA(p);
+ r = -nlmsgerr->error;
+ goto finish;
+ }
+
+ if (p->nlmsg_type != RTM_NEWADDR)
+ continue;
+
+ ifaddrmsg = NLMSG_DATA(p);
+
+ if (ifaddrmsg->ifa_family != AF_INET &&
+ ifaddrmsg->ifa_family != AF_INET6)
+ continue;
+
+ if (ifaddrmsg->ifa_scope == RT_SCOPE_HOST ||
+ ifaddrmsg->ifa_scope == RT_SCOPE_NOWHERE)
+ continue;
+
+ if (ifaddrmsg->ifa_flags & IFA_F_DEPRECATED)
+ continue;
+
+ l = NLMSG_PAYLOAD(p, sizeof(struct ifaddrmsg));
+ a = IFA_RTA(ifaddrmsg);
+
+ while (RTA_OK(a, l)) {
+
+ if (a->rta_type == IFA_ADDRESS)
+ address = RTA_DATA(a);
+ else if (a->rta_type == IFA_LOCAL)
+ local = RTA_DATA(a);
+
+ a = RTA_NEXT(a, l);
+ }
+
+ if (local)
+ address = local;
+
+ if (!address)
+ continue;
+
+ list = realloc(list, (n_list+1) * sizeof(struct address));
+ if (!list) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ list[n_list].family = ifaddrmsg->ifa_family;
+ list[n_list].scope = ifaddrmsg->ifa_scope;
+ memcpy(list[n_list].address, address, ifaddrmsg->ifa_family == AF_INET ? 4 : 16);
+ list[n_list].ifindex = ifaddrmsg->ifa_index;
+
+ n_list++;
+ }
+ }
+
+finish:
+ close(fd);
+
+ if (r < 0)
+ free(list);
+ else {
+ qsort(list, n_list, sizeof(struct address), address_compare);
+
+ *_list = list;
+ *_n_list = n_list;
+ }
+
+ return r;
+}
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008-2011 Lennart Poettering
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ nss-myhostname 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname; If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <limits.h>
+#include <nss.h>
+#include <sys/types.h>
+#include <netdb.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <net/if.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+
+#include "ifconf.h"
+
+/* We use 127.0.0.2 as IPv4 address. This has the advantage over
+ * 127.0.0.1 that it can be translated back to the local hostname. For
+ * IPv6 we use ::1 which unfortunately will not translate back to the
+ * hostname but instead something like "localhost6" or so. */
+
+#define LOCALADDRESS_IPV4 (htonl(0x7F000002))
+#define LOCALADDRESS_IPV6 &in6addr_loopback
+#define LOOPBACK_INTERFACE "lo"
+
+#define ALIGN(a) (((a+sizeof(void*)-1)/sizeof(void*))*sizeof(void*))
+
+enum nss_status _nss_myhostname_gethostbyname4_r(
+ const char *name,
+ struct gaih_addrtuple **pat,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp) _public_;
+
+enum nss_status _nss_myhostname_gethostbyname3_r(
+ const char *name,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp,
+ char **canonp) _public_;
+
+enum nss_status _nss_myhostname_gethostbyname2_r(
+ const char *name,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) _public_;
+
+enum nss_status _nss_myhostname_gethostbyname_r(
+ const char *name,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) _public_;
+
+enum nss_status _nss_myhostname_gethostbyaddr2_r(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp) _public_;
+
+enum nss_status _nss_myhostname_gethostbyaddr_r(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) _public_;
+
+enum nss_status _nss_myhostname_gethostbyname4_r(
+ const char *name,
+ struct gaih_addrtuple **pat,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp) {
+
+ unsigned lo_ifi;
+ char hn[HOST_NAME_MAX+1];
+ size_t l, idx, ms;
+ char *r_name;
+ struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL;
+ struct address *addresses = NULL, *a;
+ unsigned n_addresses = 0, n;
+
+ memset(hn, 0, sizeof(hn));
+ if (gethostname(hn, sizeof(hn)-1) < 0) {
+ *errnop = errno;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if (strcasecmp(name, hn) != 0) {
+ *errnop = ENOENT;
+ *h_errnop = HOST_NOT_FOUND;
+ return NSS_STATUS_NOTFOUND;
+ }
+
+ /* If this fails, n_addresses is 0. Which is fine */
+ ifconf_acquire_addresses(&addresses, &n_addresses);
+
+ /* If this call fails we fill in 0 as scope. Which is fine */
+ lo_ifi = if_nametoindex(LOOPBACK_INTERFACE);
+
+ l = strlen(hn);
+ ms = ALIGN(l+1)+ALIGN(sizeof(struct gaih_addrtuple))*(n_addresses > 0 ? n_addresses : 2);
+ if (buflen < ms) {
+ *errnop = ENOMEM;
+ *h_errnop = NO_RECOVERY;
+ free(addresses);
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* First, fill in hostname */
+ r_name = buffer;
+ memcpy(r_name, hn, l+1);
+ idx = ALIGN(l+1);
+
+ if (n_addresses <= 0) {
+ /* Second, fill in IPv6 tuple */
+ r_tuple = (struct gaih_addrtuple*) (buffer + idx);
+ r_tuple->next = r_tuple_prev;
+ r_tuple->name = r_name;
+ r_tuple->family = AF_INET6;
+ memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16);
+ r_tuple->scopeid = (uint32_t) lo_ifi;
+
+ idx += ALIGN(sizeof(struct gaih_addrtuple));
+ r_tuple_prev = r_tuple;
+
+ /* Third, fill in IPv4 tuple */
+ r_tuple = (struct gaih_addrtuple*) (buffer + idx);
+ r_tuple->next = r_tuple_prev;
+ r_tuple->name = r_name;
+ r_tuple->family = AF_INET;
+ *(uint32_t*) r_tuple->addr = LOCALADDRESS_IPV4;
+ r_tuple->scopeid = (uint32_t) lo_ifi;
+
+ idx += ALIGN(sizeof(struct gaih_addrtuple));
+ r_tuple_prev = r_tuple;
+ }
+
+ /* Fourth, fill actual addresses in, but in backwards order */
+ for (a = addresses + n_addresses - 1, n = 0; n < n_addresses; n++, a--) {
+ r_tuple = (struct gaih_addrtuple*) (buffer + idx);
+ r_tuple->next = r_tuple_prev;
+ r_tuple->name = r_name;
+ r_tuple->family = a->family;
+ r_tuple->scopeid = a->ifindex;
+ memcpy(r_tuple->addr, a->address, 16);
+
+ idx += ALIGN(sizeof(struct gaih_addrtuple));
+ r_tuple_prev = r_tuple;
+ }
+
+ /* Verify the size matches */
+ assert(idx == ms);
+
+ *pat = r_tuple_prev;
+
+ if (ttlp)
+ *ttlp = 0;
+
+ free(addresses);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status fill_in_hostent(
+ const char *hn,
+ int af,
+ struct hostent *result,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp,
+ char **canonp) {
+
+ size_t l, idx, ms;
+ char *r_addr, *r_name, *r_aliases, *r_addr_list;
+ size_t alen;
+ struct address *addresses = NULL, *a;
+ unsigned n_addresses = 0, n, c;
+
+ alen = PROTO_ADDRESS_SIZE(af);
+
+ ifconf_acquire_addresses(&addresses, &n_addresses);
+
+ for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++)
+ if (af == a->family)
+ c++;
+
+ l = strlen(hn);
+ ms = ALIGN(l+1)+
+ sizeof(char*)+
+ (c > 0 ? c : 1)*ALIGN(alen)+
+ (c > 0 ? c+1 : 2)*sizeof(char*);
+
+ if (buflen < ms) {
+ *errnop = ENOMEM;
+ *h_errnop = NO_RECOVERY;
+ free(addresses);
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* First, fill in hostname */
+ r_name = buffer;
+ memcpy(r_name, hn, l+1);
+ idx = ALIGN(l+1);
+
+ /* Second, create (empty) aliases array */
+ r_aliases = buffer + idx;
+ *(char**) r_aliases = NULL;
+ idx += sizeof(char*);
+
+ /* Third, add addresses */
+ r_addr = buffer + idx;
+ if (c > 0) {
+ unsigned i = 0;
+
+ for (a = addresses, n = 0; n < n_addresses; a++, n++) {
+ if (af != a->family)
+ continue;
+
+ memcpy(r_addr + i*ALIGN(alen), a->address, alen);
+ i++;
+ }
+
+ assert(i == c);
+ idx += c*ALIGN(alen);
+ } else {
+ if (af == AF_INET)
+ *(uint32_t*) r_addr = LOCALADDRESS_IPV4;
+ else
+ memcpy(r_addr, LOCALADDRESS_IPV6, 16);
+
+ idx += ALIGN(alen);
+ }
+
+ /* Fourth, add address pointer array */
+ r_addr_list = buffer + idx;
+ if (c > 0) {
+ unsigned i = 0;
+
+ for (a = addresses, n = 0; n < n_addresses; a++, n++) {
+ if (af != a->family)
+ continue;
+
+ ((char**) r_addr_list)[i] = (r_addr + i*ALIGN(alen));
+ i++;
+ }
+
+ assert(i == c);
+ ((char**) r_addr_list)[c] = NULL;
+ idx += (c+1)*sizeof(char*);
+
+ } else {
+ ((char**) r_addr_list)[0] = r_addr;
+ ((char**) r_addr_list)[1] = NULL;
+ idx += 2*sizeof(char*);
+ }
+
+ /* Verify the size matches */
+ assert(idx == ms);
+
+ result->h_name = r_name;
+ result->h_aliases = (char**) r_aliases;
+ result->h_addrtype = af;
+ result->h_length = alen;
+ result->h_addr_list = (char**) r_addr_list;
+
+ if (ttlp)
+ *ttlp = 0;
+
+ if (canonp)
+ *canonp = r_name;
+
+ free(addresses);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status _nss_myhostname_gethostbyname3_r(
+ const char *name,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp,
+ char **canonp) {
+
+ char hn[HOST_NAME_MAX+1];
+
+ if (af == AF_UNSPEC)
+ af = AF_INET;
+
+ if (af != AF_INET && af != AF_INET6) {
+ *errnop = EAFNOSUPPORT;
+ *h_errnop = NO_DATA;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ memset(hn, 0, sizeof(hn));
+ if (gethostname(hn, sizeof(hn)-1) < 0) {
+ *errnop = errno;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if (strcasecmp(name, hn) != 0) {
+ *errnop = ENOENT;
+ *h_errnop = HOST_NOT_FOUND;
+ return NSS_STATUS_NOTFOUND;
+ }
+
+ return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, canonp);
+}
+
+enum nss_status _nss_myhostname_gethostbyname2_r(
+ const char *name,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) {
+
+ return _nss_myhostname_gethostbyname3_r(
+ name,
+ af,
+ host,
+ buffer, buflen,
+ errnop, h_errnop,
+ NULL,
+ NULL);
+}
+
+enum nss_status _nss_myhostname_gethostbyname_r(
+ const char *name,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) {
+
+ return _nss_myhostname_gethostbyname3_r(
+ name,
+ AF_UNSPEC,
+ host,
+ buffer, buflen,
+ errnop, h_errnop,
+ NULL,
+ NULL);
+}
+
+enum nss_status _nss_myhostname_gethostbyaddr2_r(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp) {
+
+ char hn[HOST_NAME_MAX+1];
+ struct address *addresses = NULL, *a;
+ unsigned n_addresses = 0, n;
+
+ if (len != PROTO_ADDRESS_SIZE(af)) {
+ *errnop = EINVAL;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if (af == AF_INET) {
+
+ if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4)
+ goto found;
+
+ } else if (af == AF_INET6) {
+
+ if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0)
+ goto found;
+
+ } else {
+ *errnop = EAFNOSUPPORT;
+ *h_errnop = NO_DATA;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ ifconf_acquire_addresses(&addresses, &n_addresses);
+
+ for (a = addresses, n = 0; n < n_addresses; n++, a++) {
+ if (af != a->family)
+ continue;
+
+ if (memcmp(addr, a->address, PROTO_ADDRESS_SIZE(af)) == 0)
+ goto found;
+ }
+
+ *errnop = ENOENT;
+ *h_errnop = HOST_NOT_FOUND;
+
+ free(addresses);
+ return NSS_STATUS_NOTFOUND;
+
+found:
+ free(addresses);
+
+ memset(hn, 0, sizeof(hn));
+ if (gethostname(hn, sizeof(hn)-1) < 0) {
+ *errnop = errno;
+ *h_errnop = NO_RECOVERY;
+
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, NULL);
+
+}
+
+enum nss_status _nss_myhostname_gethostbyaddr_r(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop) {
+
+ return _nss_myhostname_gethostbyaddr2_r(
+ addr, len,
+ af,
+ host,
+ buffer, buflen,
+ errnop, h_errnop,
+ NULL);
+}
~ianmdlvl / elogind.git / commitdiff