Before this commit, if uci option "dnssec" was set, we pass "--dnssec"
and friends to dnsmasq, let it start and decide whether to quit and
whether to emit message for diagnosis
# dnsmasq --dnssec; echo $?
dnsmasq: DNSSEC not available: set HAVE_DNSSEC in src/config.h
1
DNSSEC as a feature is different from others like dhcp, tftp in that
it's a security feature. Better be explicit. With this change
committed, we make it so by not allowing it in the first in the
initscript, should dnsmasq later decides to not quit (not likely) or
quit without above explicit error (unlikely but less so ;)
So this is just being proactive. on/off choices with uci option
"dnssec" are still available like before
Link: https://github.com/openwrt/openwrt/pull/3265#issuecomment-667795302
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
This fixes a nasty problem introduced in 2.81 which causes random
crashes on systems where there's significant DNS activity over TCP. It
also fixes DNSSEC validation problems with zero-TTL DNSKEY and DS
records.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Hotplug scripts are sourced so the #!/bin/sh is superfluous/deceptive.
Re-arrange script to only source 'procd' if we get to the stage of
needing to signal the process, reduce hotplug processing load a little.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Bump to 2.81rc5 and re-work ipset-remove-old-kernel-support.
More runtime kernel version checking is done in 2.81rc5 in various parts
of the code, so expand the ipset patch' scope to inlude those new areas
and rename to something a bit more generic.:wq
Upstream changes from rc4
532246f Tweak to DNSSEC logging.
8caf3d7 Fix rare problem allocating frec for DNSSEC.
d162bee Allow overriding of ubus service name.
b43585c Fix nameserver list in auth mode.
3f60ecd Fixed resource leak on ubus_init failure.
0506a5e Handle old kernels that don't do NETLINK_NO_ENOBUFS.
e7ee1aa Extend stop-dns-rebind to reject IPv6 LL and ULA addresses. We also reject the loopback address if rebind-localhost-ok is NOT set.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Fix the test for an enabled sysntp initscript in dnsmasq.init, and get
rid of "test -o" while at it.
Issue reproduced on openwrt-19.07 with the help of pool.ntp.br and an
RTC-less ath79 router. dnssec-no-timecheck would be clearly missing
from /var/etc/dnsmasq.conf.* while the router was still a few days in
the past due to non-working DNSSEC + DNS-based NTP server config.
The fix was tested with the router in the "DNSSEC broken state": it
properly started dnsmasq in dnssec-no-timecheck mode, and eventually ntp
was able to resolve the server name to an IP address, and set the system
time. DNSSEC was then enabled by SIGINT through the ntp hotplug hook,
as expected.
A missing system.ntp.enabled UCI node is required for the bug to show
up. The reasons for why it would be missing in the first place were not
investigated.
Signed-off-by: Henrique de Moraes Holschuh <henrique@nic.br>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
Add option 'scriptarp' to uci dnsmasq config to enable --script-arp functions.
The default setting is false, meaning any scripts in `/etc/hotplug.d/neigh` intended
to be triggered by `/usr/lib/dnsmasq/dhcp-script.sh` will fail to execute.
Also enable --script-arp if has_handlers returns true.
Signed-off-by: Jordan Sokolic <oofnik@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
Bump to latest release candidate and drop 2 local patches that have been
upstreamed.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Bump to dnsmasq 2.81rc2. In the process discovered several compiler
warnings one with a logical error.
2 relevant patches sent upstream, added as 2 local patches for OpenWrt
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
1st release candidate for v2.81 after 18 months.
Refresh patches & remove all upstreamed leaving:
110-ipset-remove-old-kernel-support.patch
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This activates PIE ASLR support by default when the regular option is
selected.
This increases the binary size by 37% uncompressed and 18% compressed
on MIPS BE.
old:
146,933 /usr/sbin/dnsmasq
101,837 dnsmasq_2.80-14_mips_24kc.ipk
new:
202,020 /usr/sbin/dnsmasq
120,577 dnsmasq_2.80-14_mips_24kc.ipk
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Petr Štetiar <ynezz@true.cz>
When running sysupgrade from an existing configuration, UCI option
dhcp.@dnsmasq[0].resolvfile needs to be modified in case it has not
been changed from it's original value.
Accomplish that using a uci-defaults script.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Previous commit should have bumped PKG_RELEASE, but git add was
forgotten... Add it now.
Fixes: cd48d8d342 ("dnsmasq: switch to /tmp/resolv.conf.d/resolv.conf.auto")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This is a backport from the dnsmasq master which should fix a bug which
could cause a crash in dnsmasq.
I saw the following crashes in my log:
[522413.117215] do_page_fault(): sending SIGSEGV to dnsmasq for invalid read access from 2a001450
[522413.124464] epc = 004197f1 in dnsmasq[400000+23000]
[522413.129459] ra = 004197ef in dnsmasq[400000+23000]
This is happening in blockdata_write() when block->next is
dereferenced, but I am not sure if this is related to this problem or if
this is a different problem. I am unable to reproduce this problem.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
dnsmasq v2.80 made 'dnssec-check-unsigned' the default, thus the uci
option was rendered ineffectual: we checked unsigned zones no matter the
setting.
Disabling the checking of unsigned zones is now achieve with the
"--dnssec-check-unsigned=no" dnsmasq option.
Update init script to pass required option in the disabled case.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This decreases the binary size when PIE ASLR is activated by 8% on MIPS BE.
old:
202,020 /usr/sbin/dnsmasq
new:
185,676 /usr/sbin/dnsmasq
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Backport upstream patches pre 2.81rc for testing purposes.
Let's see what falls out!
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This is to make life easier for users with customized build of
dnsmasq-full variant. Currently dnsmasq config generated by current
service script will be rejected by dnsmasq build lacking DHCP feature
- Options like --dhcp-leasefile have default values. Deleting them
from uci config or setting them to empty value will make them take on
default value in the end
- Options like --dhcp-broadcast are output unconditionally
Tackle this by
- Check availablility of features from output of "dnsmasq --version"
- Make a list of options guarded by HAVE_xx macros in src/options.c of
dnsmasq source code
- Ignore these options in xappend()
Two things to note in this implementation
- The option list is not exhaustive. Supposedly only those options that
may cause dnsmasq to reject with "unsupported option (check that
dnsmasq was compiled with DHCP/TFTP/DNSSEC/DBus support)" are taken
into account here
- This provides a way out but users' cooperation is still needed. E.g.
option dnssec needs to be turned off, otherwise the service script
will try to add --conf-file pointing to dnssec specific anchor file
which dnsmasq lacking dnssec support will reject
Resolves FS#2281
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
max_ttl - limit the ttl in the dns answer if greater as $max_ttl
min_cache_ttl - force caching of dns answers even the ttl in the answer
is lower than the $min_cache_ttl
max_cache_ttl - cache only dns answer for $max_cache_ttl.
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
This makes it clear that localuse when explicitly specified in the
config will have its final say on whether or not the initscript should
touch /etc/resolv.conf, no matter whatever the result of previous
guesswork would be
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Currently it seems impossible to configure /etc/config/dhcp to achieve
the following use case
- run dnsmasq with no-resolv
- re-generate /etc/resolv.conf with "nameserver 127.0.0.1"
Before this change, we have to set resolvfile to /tmp/resolv.conf.auto
to achive the 2nd effect above, but setting resolvfile requires noresolv
being false.
A new boolean option "localuse" is added to indicate that we intend to
use dnsmasq as the local dns resolver. It's false by default and to
align with old behaviour it will be true automatically if resolvfile is
set to /tmp/resolv.conf.auto
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Acked-by: Hans Dedecker <dedeckeh@gmail.com>
Opkg treats text after a version number as higher than without:
~# opkg compare-versions "2.80rc1" "<<" "2.80"; echo $?
1
~# opkg compare-versions "2.80rc1" ">>" "2.80"; echo $?
0
This causes opkg not offering final release as upgradable version, and
even refusing to update, since it thinks the installed version is
higher.
This can be mitigated by adding ~ between the version and the text, as ~
will order as less than everything except itself. Since 'r' < 't', to
make sure that test will be treated as lower than rc we add a second ~
before the test tag. That way, the ordering becomes
2.80~~test < 2.80~rc < 2.80
which then makes opkg properly treat prerelease versions as lower.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
f52bb5b fix previous commit
18eac67 Fix entries in /etc/hosts disabling static leases.
f8c77ed Fix removal of DHCP_CLIENT_MAC options from DHCPv6 relay replies.
4bf62f6 Tidy cache_blockdata_free()
9c0d445 Fix e7bfd556c079c8b5e7425aed44abc35925b24043 to actually work.
2896e24 Check for not(DS or DNSKEY) in is_outdated_cname_pointer()
a90f09d Fix crash freeing negative SRV cache entries.
5b99eae Cache SRV records.
2daca52 Fix typo in ra-param man page section.
2c59473 File logic bug in cache-marshalling code. Introduced a couple of commits back.
cc921df Remove nested struct/union in cache records and all_addr.
ab194ed Futher address union tidying.
65a01b7 Tidy address-union handling: move class into explicit argument.
bde4647 Tidy all_addr union, merge log and rcode fields.
e7bfd55 Alter DHCP address selection after DECLINE in consec-addr mode. Avoid offering the same address after a recieving a DECLINE message to stop an infinite protocol loop. This has long been done in default address allocation mode: this adds similar behaviour when allocaing addresses consecutively.
The most relevant fix for openwrt is 18eac67 (& my own local f52bb5b
which fixes a missing bracket silly) To quote the patch:
It is possible for a config entry to have one address family specified by a
dhcp-host directive and the other added from /etc/hosts. This is especially
common on OpenWrt because it uses odhcpd for DHCPv6 and IPv6 leases are
imported into dnsmasq via a hosts file.
To handle this case there need to be separate *_HOSTS flags for IPv4 and IPv6.
Otherwise when the hosts file is reloaded it will clear the CONFIG_ADDR(6) flag
which was set by the dhcp-host directive.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
The above options were incorrectly changed to required tags. Make them
optional again.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
During upstream removal of conditional ipv6 support an order swap error
was made in a ternary operator usage.
This patch sent upstream.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Backport upstream commits. Most interesting 122392e which changes how
SERVFAIL is handled especially in event of genuine server down/failure
scenarios with multiple servers. a799ca0 also interesting in that
answered received via TCP are now cached, DNSSEC typically using TCP
meant until now answers weren't cached, hence reducing performance.
59e4703 Free config file values on parsing errors.
48d12f1 Remove the NO_FORK compile-time option, and support for uclinux.
122392e Revert 68f6312d4bae30b78daafcd6f51dc441b8685b1e
3a5a84c Fix Makefile lines generating UBUS linker config.
24b8760 Do not rely on dead code elimination, use array instead. Make options bits derived from size and count. Use size of option bits and last supported bit in computation. No new change would be required when new options are added. Just change OPT_LAST constant.
6f7812d Fix spurious AD flags in some DNS replies from local config.
cbb5b17 Fix logging in cf5984367bc6a949e3803a576512c5a7bc48ebab
cf59843 Don't forward *.bind/*.server queries upstream
ee87504 Remove ability to compile without IPv6 support.
a220545 Ensure that AD bit is reset on answers from --address=/<domain>/<address>.
a799ca0 Impove cache behaviour for TCP connections.
Along with an additional patch to fix compilation without DHCPv6, sent
upstream.
I've been running this for aaaages without obvious issue hence brave
step of opening to wider openwrt community.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This reverts commit a6a8fe0be5.
buildbot found an error
option.c: In function 'dhcp_context_free':
option.c:1042:15: error: 'struct dhcp_context' has no member named 'template_interface'
free(ctx->template_interface);
revert for the moment
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Backport upstream commits. Most interesting 122392e which changes how
SERVFAIL is handled especially in event of genuine server down/failure
scenarios with multiple servers. a799ca0 also interesting in that
answered received via TCP are now cached, DNSSEC typically using TCP
meant until now answers weren't cached, hence reducing performance.
59e4703 Free config file values on parsing errors.
48d12f1 Remove the NO_FORK compile-time option, and support for uclinux.
122392e Revert 68f6312d4bae30b78daafcd6f51dc441b8685b1e
3a5a84c Fix Makefile lines generating UBUS linker config.
24b8760 Do not rely on dead code elimination, use array instead. Make options bits derived from size and count. Use size of option bits and last supported bit in computation. No new change would be required when new options are added. Just change OPT_LAST constant.
6f7812d Fix spurious AD flags in some DNS replies from local config.
cbb5b17 Fix logging in cf5984367bc6a949e3803a576512c5a7bc48ebab
cf59843 Don't forward *.bind/*.server queries upstream
ee87504 Remove ability to compile without IPv6 support.
a220545 Ensure that AD bit is reset on answers from --address=/<domain>/<address>.
a799ca0 Impove cache behaviour for TCP connections.
I've been running this for aaaages without obvious issue hence brave
step of opening to wider openwrt community.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Openwrt no longer uses and has not used since 5acfe55d71 Jun 2016 the
timestamp file (/etc/dnsmasq.time) method of resolving the dnssec/ntp
dnslookup chicken/egg problem, having used signals from ntp since that
change.
Drop the 'dnssec-improve-timestamp-heuristic' patch since it is neither
used nor sent upstream. One less thing to refresh & maintain.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Install following as config files (600) perms instead of as data (644)
/usr/share/dnsmasq/dhcpbogushostname.conf
/usr/share/dnsmasq/trust-anchors.conf
/usr/share/dnsmasq/rfc6761.conf
/etc/hotplug.d/ntp/25-dnsmasqsec
/etc/config/dhcp
/etc/dnsmasq.conf
dnsmasq reads relevant config files before dropping root privilege and
running as dnsmasq:dnsmasq
ntpd runs as root so the hotplug script is still accessible
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This patch fixes jailed dnsmasq running into the following issue:
|dnsmasq[1]: cannot read /usr/share/dnsmasq/dhcpbogushostname.conf: No such file or directory
|dnsmasq[1]: FAILED to start up
|procd: Instance dnsmasq::cfg01411c s in a crash loop 6 crashes, 0 seconds since last crash
Fixes: a45f4f50e1 ("dnsmasq: add dhcp-ignore-names support - CERT VU#598349")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[bump package release]
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
53792c9 fix typo
df07182 Update German translation.
Remove local patch 001-fix-typo which is a backport of the above 53792c9
There is no practical difference between our test8 release and this rc
release, but this does at least say 'release candidate'
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
dnsmasq v2.80test8 adds the ability to ignore dhcp client's requests for
specific hostnames. Clients claiming certain hostnames and thus
claiming DNS namespace represent a potential security risk. e.g. a
malicious host could claim 'wpad' for itself and redirect other web
client requests to it for nefarious purpose. See CERT VU#598349 for more
details.
Some Samsung TVs are claiming the hostname 'localhost', it is believed
not (yet) for nefarious purposes.
/usr/share/dnsmasq/dhcpbogushostname.conf contains a list of hostnames
in correct syntax to be excluded. e.g.
dhcp-name-match=set:dhcp_bogus_hostname,localhost
Inclusion of this file is controlled by uci option dhcpbogushostname
which is enabled by default.
To be absolutely clear, DHCP leases to these requesting hosts are still
permitted, but they do NOT get to claim ownership of the hostname
itself and hence put into DNS for other hosts to be confused/manipulate by.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
e1791f3 Fix logging of DNSSEC queries in TCP mode. Destination server address was misleading.
0fdf3c1 Fix dhcp-match-name to match hostname, not complete FQDN.
ee1df06 Tweak strategy for confirming SLAAC addresses.
1e87eba Clarify manpage for --auth-sec-servers
0893347 Make interface spec optional in --auth-server.
7cbf497 Example config file fix for CERT Vulnerability VU#598349.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Bump to latest test release:
3a610a0 Finesse allocation of memory for "struct crec" cache entries.
48b090c Fix b6f926fbefcd2471699599e44f32b8d25b87b471 to not SEGV on startup (rarely).
4139298 Change behavior when RD bit unset in queries.
51cc10f Add warning about 0.0.0.0 and :: addresses to man page.
ea6cc33 Handle memory allocation failure in make_non_terminals()
ad03967 Add debian/tmpfiles.conf
f4fd07d Debian bugfix.
e3c08a3 Debian packaging fix. (restorecon)
118011f Debian packaging fix. (tmpfiles.d)
Delete our own backports of ea6cc33 & 4139298, so the only real changes
here, since we don't care about the Debian stuff are 48b090c & 3a610a0
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Backport upstream commit
Change anti cache-snooping behaviour with queries with the
recursion-desired bit unset. Instead to returning SERVFAIL, we
now always forward, and never answer from the cache. This
allows "dig +trace" command to work.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Refresh patches
Changes since latest bump:
af3bd07 Man page typo.
d682099 Picky changes to 47b45b2967c931fed3c89a2e6a8df9f9183a5789
47b45b2 Fix lengths of interface names
2b38e38 Minor improvements in lease-tools
282eab7 Mark die function as never returning
c346f61 Handle ANY queries in context of da8b6517decdac593e7ce24bde2824dd841725c8
03212e5 Manpage typo.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
The dnsmasq variants should provide dnsmasq, otherwise it is impossible
to include them in the image.
This change allows one to have CONFIG_PACKAGE_dnsmasq=m and
CONFIG_PACKAGE_dnsmasq-full=y, e.g. because you want DNSSEC support, or
IPSETs suport on your 3000-devices fleet ;-)
Signed-off-by: Henrique de Moraes Holschuh <henrique@nic.br>
Yousong Zhou
Kevin Darbyshire-Bryant
Sven Roederer
Henrique de Moraes Holschuh
Jordan Sokolic
Hauke Mehrtens
Daniel Golle
Hans Dedecker
Alexander Couzens
Jonas Gorski
Rosy Song
Christian Lamparter