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44 Commits
Author SHA1 Message Date
Simon Kelley fd6ad9e481 Merge message translations. 2015-03-30 07:52:21 +01:00
Simon Kelley 794fccca7f Fix crash in last commit. 2015-03-29 22:35:44 +01:00
Simon Kelley 394ff492da Allow control characters in names in the cache, handle when logging. 2015-03-29 22:17:14 +01:00
Simon Kelley 1e153945de DNSSEC fix for non-ascii characters in labels. 2015-03-28 21:34:07 +00:00
Simon Kelley 0b8a5a30a7 Protect against broken DNSSEC upstreams. 2015-03-27 11:44:55 +00:00
Simon Kelley 150162bc37 Return SERVFAIL when validation abandoned. 2015-03-27 09:58:26 +00:00
Simon Kelley 8805283088 Don't fail DNSSEC when a signed CNAME dangles into an unsigned zone. 2015-03-26 21:15:43 +00:00
Lung-Pin Chang 65c7212000 dhcp: set outbound interface via cmsg in unicast reply
If multiple routes to the same network exist, Linux blindly picks
  the first interface (route) based on destination address, which might not be
  the one we're actually offering leases. Rather than relying on this,
  always set the interface for outgoing unicast DHCP packets.
2015-03-19 23:22:21 +00:00
Simon Kelley 979fe86bc8 Make --address=/example.com/ equivalent to --server=/example.com/ 2015-03-19 22:50:22 +00:00
Simon Kelley ff841ebf5a Fix boilerplate code for re-running system calls on EINTR and EAGAIN etc.
The nasty code with static variable in retry_send() which
avoids looping forever needs to be called on success of the syscall,
to reset the static variable.
2015-03-11 21:36:30 +00:00
Simon Kelley 360f2513ab Tweak DNSSEC timestamp code to create file later, removing need to chown it. 2015-03-07 18:28:06 +00:00
Simon Kelley 4c960fa90a New version of contrib/reverse-dns 2015-03-04 20:32:26 +00:00
Simon Kelley 9003b50b13 Fix last commit to not crash if uid changing not configured. 2015-03-02 22:47:23 +00:00
Simon Kelley f6e62e2af9 Add --dnssec-timestamp option and facility. 2015-03-01 18:17:54 +00:00
Joachim Zobel 47b9ac59c7 Log parsing utils in contrib/reverse-dns 2015-02-23 21:38:11 +00:00
Tomas Hozza 0705a7e2d5 Fix uninitialized value used in get_client_mac() 2015-02-23 21:26:26 +00:00
Chen Wei 28b879ac47 Fix trivial memory leaks to quieten valgrind. 2015-02-17 22:07:35 +00:00
Simon Kelley caeea190f1 Make dynamic hosts files work when --no-hosts set. 2015-02-14 20:08:56 +00:00
Simon Kelley 8ff70de618 Typos. 2015-02-14 20:02:37 +00:00
Simon Kelley ee4d1cea92 Debian systemd fixes. 2015-02-12 18:30:32 +00:00
Shantanu Gadgil f4f400776b Fix get-version script which returned wrong tag in some situations. 2015-02-11 20:16:59 +00:00
Chris Lamb b467a454b4 Make Debian build reproducible. 2015-02-09 11:52:30 +00:00
Simon Kelley efb8b5566a man page typo. 2015-02-07 22:36:34 +00:00
Simon Kelley f9c863708c Extra logging for inotify code. 2015-02-03 21:52:48 +00:00
Simon Kelley 2941d3ac89 Fixup dhcp-configs after reading extra hostfiles with inotify. 2015-02-02 22:36:42 +00:00
Thiébaud Weksteen d36b732c4c Manpage typo fix. 2015-02-02 21:38:27 +00:00
Simon Kelley d2c5458e31 Debian changelog bugfix. 2015-02-02 21:27:39 +00:00
Simon Kelley 8d8a54ec79 Fix build failure on openBSD. 2015-02-01 21:48:46 +00:00
Simon Kelley 1062667618 BSD make support 2015-02-01 00:15:16 +00:00
Simon Kelley 6ef15b34ca Fix broken ECDSA DNSSEC signatures. 2015-01-31 22:44:26 +00:00
Simon Kelley 3d04f46334 inotify documentation updates. 2015-01-31 21:59:13 +00:00
Simon Kelley aff3396280 Update copyrights for dawn of 2015. 2015-01-31 20:13:40 +00:00
Simon Kelley 70d1873dd9 Expand inotify code to dhcp-hostsdir, dhcp-optsdir and hostsdir. 2015-01-31 19:59:29 +00:00
Simon Kelley 0491805d2f Allow inotify to be disabled at compile time on Linux. 2015-01-26 11:23:43 +00:00
Win King Wan 61b838dd57 Don't reply to DHCPv6 SOLICIT messages when not configured for statefull DHCPv6. 2015-01-21 20:41:48 +00:00
Conrad Kostecki fbf01f7046 Update German translation. 2015-01-20 21:07:56 +00:00
Simon Kelley 5f4dc5c6ca Add --dhcp-hostsdir config option. 2015-01-20 20:51:02 +00:00
Simon Kelley 2ae195f5a7 Don't treat SERVFAIL as a recoverable error..... 2015-01-18 22:20:48 +00:00
Simon Kelley 393415597c Cope with multiple interfaces with the same LL address. 2015-01-18 22:11:10 +00:00
Simon Kelley ae4624bf46 Logs for DS records consistent. 2015-01-12 23:22:08 +00:00
Simon Kelley 5e321739db Don't answer from cache RRsets from wildcards, as we don't have NSECs. 2015-01-12 23:16:56 +00:00
Simon Kelley 9f79ee4ae3 Log port of requestor when doing extra logging. 2015-01-12 20:18:18 +00:00
RinSatsuki 28de38768e Add --min-cache-ttl option. 2015-01-10 15:22:21 +00:00
Simon Kelley 25cf5e373e Add --log-queries=extra option for more complete logging. 2015-01-09 15:53:03 +00:00
60 changed files with 5468 additions and 3962 deletions

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+34 -1
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@@ -9,7 +9,9 @@ version 2.73
Use inotify for checking on updates to /etc/resolv.conf and
friends under Linux. This fixes race conditions when the files are
updated rapidly and saves CPU by noy polling.
updated rapidly and saves CPU by noy polling. To build
a binary that runs on old Linux kernels without inotify,
use make COPTS=-DNO_INOTIFY
Fix breakage of --domain=<domain>,<subnet>,local - only reverse
queries were intercepted. THis appears to have been broken
@@ -40,6 +42,37 @@ version 2.73
nameservers in the unsigned parts of the DNS tree
which don't respond well to DNSSEC queries.
Add --log-queries=extra option, which makes logs easier
to search automatically.
Add --min-cache-ttl option. I've resisted this for a long
time, on the grounds that disbelieving TTLs is never a
good idea, but I've been persuaded that there are
sometimes reasons to do it. (Step forward, GFW).
To avoid misuse, there's a hard limit on the TTL
floor of one hour. Thansk to RinSatsuki for the patch.
Cope with multiple interfaces with the same link-local
address. (IPv6 addresses are scoped, so this is allowed.)
Thanks to Cory Benfield for help with this.
Add --dhcp-hostsdir. This allows addition of new host
configurations to a running dnsmasq instance much more
cheaply than having dnsmasq re-read all its existing
configuration each time.
Don't reply to DHCPv6 SOLICIT messages if we're not
configured to do stateful DHCPv6. Thanks to Win King Wan
for the patch.
Fix broken DNSSEC validation of ECDSA signatures.
Add --dnssec-timestamp option, which provides an automatic
way to detect when the system time becomes valid after boot
on systems without an RTC, whilst allowing DNS queries before the
clock is valid so that NTP can run. Thanks to
Kevin Darbyshire-Bryant for developing this idea.
version 2.72
Add ra-advrouter mode, for RFC-3775 mobile IPv6 support.
+5 -3
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@@ -1,4 +1,4 @@
# dnsmasq is Copyright (c) 2000-2014 Simon Kelley
# dnsmasq is Copyright (c) 2000-2015 Simon Kelley
#
# 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
@@ -64,8 +64,10 @@ nettle_libs = `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC $(PKG_CONFIG
gmp_libs = `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC NO_GMP --copy -lgmp`
sunos_libs = `if uname | grep SunOS >/dev/null 2>&1; then echo -lsocket -lnsl -lposix4; fi`
version = -DVERSION='\"`$(top)/bld/get-version $(top)`\"'
copts_conf = .copts_$(shell $(CC) -DDNSMASQ_COMPILE_OPTS $(COPTS) -E $(top)/$(SRC)/dnsmasq.h | \
( md5sum 2>/dev/null || md5 ) | cut -f 1 -d ' ')
sum?=$(shell $(CC) -DDNSMASQ_COMPILE_OPTS $(COPTS) -E $(top)/$(SRC)/dnsmasq.h | ( md5sum 2>/dev/null || md5 ) | cut -f 1 -d ' ')
sum!=$(CC) -DDNSMASQ_COMPILE_OPTS $(COPTS) -E $(top)/$(SRC)/dnsmasq.h | ( md5sum 2>/dev/null || md5 ) | cut -f 1 -d ' '
copts_conf = .copts_$(sum)
objs = cache.o rfc1035.o util.o option.o forward.o network.o \
dnsmasq.o dhcp.o lease.o rfc2131.o netlink.o dbus.o bpf.o \
+1 -1
View File
@@ -20,7 +20,7 @@ else
vers=`cat $1/VERSION | sed 's/[(), ]/,/ g' | tr ',' '\n' | grep ^v[0-9]`
if [ $? -eq 0 ]; then
echo "${vers}" | sort | head -n 1 | sed 's/^v//'
echo "${vers}" | sort -r | head -n 1 | sed 's/^v//'
else
cat $1/VERSION
fi
+18
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@@ -0,0 +1,18 @@
The script reads stdin and replaces all IP addresses with names before
outputting it again. IPs from private networks are reverse looked up
via dns. Other IP adresses are searched for in the dnsmasq query log.
This gives names (CNAMEs if I understand DNS correctly) that are closer
to the name the client originally asked for then the names obtained by
reverse lookup. Just run
netstat -n -4 | ./reverse_replace.sh
to see what it does. It needs
log-queries
log-facility=/var/log/dnsmasq.log
in the dnsmasq configuration.
The script runs on debian (with ash installed) and on busybox.
+125
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@@ -0,0 +1,125 @@
#!/bin/ash
# $Id: reverse_replace.sh 18 2015-03-01 16:12:35Z jo $
#
# Usage e.g.: netstat -n -4 | reverse_replace.sh
# Parses stdin for IP4 addresses and replaces them
# with names retrieved by parsing the dnsmasq log.
# This currently only gives CNAMEs. But these
# usually tell ou more than the mones from reverse
# lookups.
#
# This has been tested on debian and asuswrt. Plese
# report successful tests on other platforms.
#
# Author: Joachim Zobel <jz-2014@heute-morgen.de>
# License: Consider this MIT style licensed. You can
# do as you ike, but you must not remove my name.
#
LOG=/var/log/dnsmasq.log
MAX_LINES=15000
# sed regex do match IPs
IP_regex='[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'
# private IP ranges
IP_private='\(^127\.\)\|\(^192\.168\.\)\|\(^10\.\)\|\(^172\.1[6-9]\.\)\|\(^172\.2[0-9]\.\)\|\(^172\.3[0-1]\.\)'
#######################################################################
# Find Commands
HOST=nslookup
if type host > /dev/null 2>&1; then
# echo "No need for nslookup, host is there"
HOST=host
fi
#######################################################################
# Functions
# Use shell variables for an (IP) lookup table
create_lookup_table()
{
# Parse log into lookup table
local CMDS="$( tail -"$MAX_LINES" "$LOG" | \
grep " is $IP_regex" | \
sed "s#.* \([^ ]*\) is \($IP_regex\).*#set_val \2 \1;#" )"
local IFS='
'
for CMD in $CMDS
do
eval $CMD
done
}
set_val()
{
local _IP=$(echo $1 | tr . _)
local KEY="__IP__$_IP"
eval "$KEY"=$2
}
get_val()
{
local _IP=$(echo $1 | tr . _)
local KEY="__IP__$_IP"
eval echo -n '${'"$KEY"'}'
}
dns_lookup()
{
local IP=$1
local RTN="$($HOST $IP | \
sed 's#\s\+#\n#g' | \
grep -v '^$' | \
tail -1 | tr -d '\n' | \
sed 's#\.$##')"
if echo $RTN | grep -q NXDOMAIN; then
echo -n $IP
else
echo -n "$RTN"
fi
}
reverse_dns()
{
local IP=$1
# Skip if it is not an IP
if ! echo $IP | grep -q "^$IP_regex$"; then
echo -n $IP
return
fi
# Do a dns lookup, if it is a local IP
if echo $IP | grep -q $IP_private; then
dns_lookup $IP
return
fi
local NAME="$(get_val $IP)"
if [ -z "$NAME" ]; then
echo -n $IP
else
echo -n $NAME
fi
}
#######################################################################
# Main
create_lookup_table
while read LINE; do
for IP in $(echo "$LINE" | \
sed "s#\b\($IP_regex\)\b#\n\1\n#g" | \
grep $IP_regex)
do
NAME=`reverse_dns $IP `
# echo "$NAME $IP"
LINE=`echo "$LINE" | sed "s#$IP#$NAME#" `
done
echo $LINE
done
+15 -1
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@@ -3,8 +3,22 @@ dnsmasq (2.73-1) unstable; urgency=low
* New upstream.
* Tweak field width in cache dump to avoid truncating IPv6
addresses. (closes: #771557)
* Add newline at the end of example config file. (LP: #1416895)
* Make Debian package build reproducible. (closes: #777323)
-- Simon Kelley <simon@thekelleys.org.uk> Fri, 03 Oct 2014 08:49:42 +0000
-- Simon Kelley <simon@thekelleys.org.uk> Wed, 11 Feb 2015 21:59:42 +0000
dnsmasq (2.72-3) unstable; urgency=medium
* debian/systemd.service: switch from Type=dbus to Type=forking.
dnsmasq does not depend on dbus, but Type=dbus systemd services cannot
work without it. (Closes: #769486, #776530)
- debian/init: when called with systemd-exec argument, let dnsmasq
go into the background, so Type=forking can detect when it is ready
* Remove line containing only whitespace in debian/contol.
(closes: #777571)
-- Simon Kelley <simon@thekelleys.org.uk> Wed, 11 Feb 2015 21:56:12 +0000
dnsmasq (2.72-2) unstable; urgency=low
-2
View File
@@ -42,5 +42,3 @@ Description: Utilities for manipulating DHCP leases
Small utilities to query a DHCP server's lease database and
remove leases from it. These programs are distributed with dnsmasq
and may not work correctly with other DHCP servers.
+1 -1
View File
@@ -1,4 +1,4 @@
dnsmasq is Copyright (c) 2000-2013 Simon Kelley
dnsmasq is Copyright (c) 2000-2015 Simon Kelley
It was downloaded from: http://www.thekelleys.org.uk/dnsmasq/
Vendored
+1 -3
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@@ -293,9 +293,7 @@ case "$1" in
mkdir /var/run/dnsmasq || return 2
chown dnsmasq:nogroup /var/run/dnsmasq || return 2
fi
# Enable DBus by default because we use DBus activation with systemd.
exec $DAEMON --keep-in-foreground --enable-dbus \
-x /var/run/dnsmasq/$NAME.pid \
exec $DAEMON -x /var/run/dnsmasq/$NAME.pid \
${MAILHOSTNAME:+ -m $MAILHOSTNAME} \
${MAILTARGET:+ -t $MAILTARGET} \
${DNSMASQ_USER:+ -u $DNSMASQ_USER} \
+10 -10
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@@ -144,26 +144,26 @@ ifeq (,$(findstring nodocs,$(DEB_BUILD_OPTIONS)))
install -m 644 dnsmasq.conf.example debian/base/usr/share/doc/$(package)/examples/.
install -m 644 trust-anchors.conf debian/base/usr/share/$(package)/.
install -m 644 FAQ debian/base/usr/share/doc/$(package)/.
gzip -9 debian/base/usr/share/doc/$(package)/FAQ
gzip -9n debian/base/usr/share/doc/$(package)/FAQ
install -m 644 CHANGELOG debian/base/usr/share/doc/$(package)/changelog
gzip -9 debian/base/usr/share/doc/$(package)/changelog
gzip -9n debian/base/usr/share/doc/$(package)/changelog
install -m 644 CHANGELOG.archive debian/base/usr/share/doc/$(package)/changelog.archive
gzip -9 debian/base/usr/share/doc/$(package)/changelog.archive
gzip -9n debian/base/usr/share/doc/$(package)/changelog.archive
install -m 644 dbus/DBus-interface debian/base/usr/share/doc/$(package)/.
gzip -9 debian/base/usr/share/doc/$(package)/DBus-interface
gzip -9n debian/base/usr/share/doc/$(package)/DBus-interface
endif
install -m 644 debian/dnsmasq-base.conffiles debian/base/DEBIAN/conffiles
install -m 755 debian/dnsmasq-base.postinst debian/base/DEBIAN/postinst
install -m 755 debian/dnsmasq-base.postrm debian/base/DEBIAN/postrm
install -m 644 debian/changelog debian/base/usr/share/doc/$(package)/changelog.Debian
gzip -9 debian/base/usr/share/doc/$(package)/changelog.Debian
gzip -9n debian/base/usr/share/doc/$(package)/changelog.Debian
install -m 644 debian/readme debian/base/usr/share/doc/$(package)/README.Debian
install -m 644 debian/copyright debian/base/usr/share/doc/$(package)/copyright
install -m 644 debian/dbus.conf debian/base/etc/dbus-1/system.d/dnsmasq.conf
gzip -9 debian/base/usr/share/man/man8/dnsmasq.8
gzip -9n debian/base/usr/share/man/man8/dnsmasq.8
for f in debian/base/usr/share/man/*; do \
if [ -f $$f/man8/dnsmasq.8 ]; then \
gzip -9 $$f/man8/dnsmasq.8 ; \
gzip -9n $$f/man8/dnsmasq.8 ; \
fi \
done
ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
@@ -185,13 +185,13 @@ ifeq ($(DEB_HOST_ARCH_OS),linux)
make -C contrib/wrt PREFIX=/usr DESTDIR=`pwd`/debian/utils CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" COPTS="$(DEB_COPTS)" CC=gcc
install -m 755 contrib/wrt/dhcp_release debian/utils/usr/bin/dhcp_release
install -m 644 contrib/wrt/dhcp_release.1 debian/utils/usr/share/man/man1/dhcp_release.1
gzip -9 debian/utils/usr/share/man/man1/dhcp_release.1
gzip -9n debian/utils/usr/share/man/man1/dhcp_release.1
install -m 755 contrib/wrt/dhcp_lease_time debian/utils/usr/bin/dhcp_lease_time
install -m 644 contrib/wrt/dhcp_lease_time.1 debian/utils/usr/share/man/man1/dhcp_lease_time.1
install -m 644 debian/copyright debian/utils/usr/share/doc/dnsmasq-utils/copyright
install -m 644 debian/changelog debian/utils/usr/share/doc/dnsmasq-utils/changelog.Debian
gzip -9 debian/utils/usr/share/doc/dnsmasq-utils/changelog.Debian
gzip -9 debian/utils/usr/share/man/man1/dhcp_lease_time.1
gzip -9n debian/utils/usr/share/doc/dnsmasq-utils/changelog.Debian
gzip -9n debian/utils/usr/share/man/man1/dhcp_lease_time.1
ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
strip -R .note -R .comment debian/utils/usr/bin/dhcp_release
strip -R .note -R .comment debian/utils/usr/bin/dhcp_lease_time
+2 -7
View File
@@ -2,8 +2,8 @@
Description=dnsmasq - A lightweight DHCP and caching DNS server
[Service]
Type=dbus
BusName=uk.org.thekelleys.dnsmasq
Type=forking
PIDFile=/var/run/dnsmasq/dnsmasq.pid
# Test the config file and refuse starting if it is not valid.
ExecStartPre=/usr/sbin/dnsmasq --test
@@ -11,11 +11,6 @@ ExecStartPre=/usr/sbin/dnsmasq --test
# We run dnsmasq via the /etc/init.d/dnsmasq script which acts as a
# wrapper picking up extra configuration files and then execs dnsmasq
# itself, when called with the "systemd-exec" function.
#
# It also adds the command-line flags
# --keep-in-foreground --enable-dbus
# to enable DBus by default because we use DBus activation.
#
ExecStart=/etc/init.d/dnsmasq systemd-exec
# The systemd-*-resolvconf functions configure (and deconfigure)
+41 -5
View File
@@ -50,6 +50,10 @@ Additional hosts file. Read the specified file as well as /etc/hosts. If -h is g
only the specified file. This option may be repeated for more than one
additional hosts file. If a directory is given, then read all the files contained in that directory.
.TP
.B --hostsdir=<path>
Read all the hosts files contained in the directory. New or changed files
are read automatically. See --dhcp-hostsdir for details.
.TP
.B \-E, --expand-hosts
Add the domain to simple names (without a period) in /etc/hosts
in the same way as for DHCP-derived names. Note that this does not
@@ -81,6 +85,12 @@ the upstream DNS servers.
.B --max-cache-ttl=<time>
Set a maximum TTL value for entries in the cache.
.TP
.B --min-cache-ttl=<time>
Extend short TTL values to the time given when caching them. Note that
artificially extending TTL values is in general a bad idea, do not do it
unless you have a good reason, and understand what you are doing.
Dnsmasq limits the value of this option to one hour, unless recompiled.
.TP
.B --auth-ttl=<time>
Set the TTL value returned in answers from the authoritative server.
.TP
@@ -98,7 +108,10 @@ only, to stop dnsmasq daemonising in production, use
.B -k.
.TP
.B \-q, --log-queries
Log the results of DNS queries handled by dnsmasq. Enable a full cache dump on receipt of SIGUSR1.
Log the results of DNS queries handled by dnsmasq. Enable a full cache dump on receipt of SIGUSR1. If the argument "extra" is supplied, ie
.B --log-queries=extra
then the log has extra information at the start of each line.
This consists of a serial number which ties together the log lines associated with an individual query, and the IP address of the requestor.
.TP
.B \-8, --log-facility=<facility>
Set the facility to which dnsmasq will send syslog entries, this
@@ -447,7 +460,7 @@ but provides some syntactic sugar to make specifying address-to-name queries eas
is exactly equivalent to
.B --server=/3.2.1.in-addr.arpa/192.168.0.1
.TP
.B \-A, --address=/<domain>/[domain/]<ipaddr>
.B \-A, --address=/<domain>/[domain/][<ipaddr>]
Specify an IP address to return for any host in the given domains.
Queries in the domains are never forwarded and always replied to
with the specified IP address which may be IPv4 or IPv6. To give
@@ -459,7 +472,10 @@ domain specification works in the same was as for --server, with the
additional facility that /#/ matches any domain. Thus
--address=/#/1.2.3.4 will always return 1.2.3.4 for any query not
answered from /etc/hosts or DHCP and not sent to an upstream
nameserver by a more specific --server directive.
nameserver by a more specific --server directive. As for --server,
one or more domains with no address returns a no-such-domain answer, so
--address=/example.com/ is equivalent to --server=/example.com/ and returns
NXDOMAIN for example.com and all its subdomains.
.TP
.B --ipset=/<domain>/[domain/]<ipset>[,<ipset>]
Places the resolved IP addresses of queries for the specified domains
@@ -503,7 +519,7 @@ zone files: the port, weight and priority numbers are in a different
order. More than one SRV record for a given service/domain is allowed,
all that match are returned.
.TP
.B --host-record=<name>[,<name>....][<IPv4-address>],[<IPv6-address>]
.B --host-record=<name>[,<name>....],[<IPv4-address>],[<IPv6-address>]
Add A, AAAA and PTR records to the DNS. This adds one or more names to
the DNS with associated IPv4 (A) and IPv6 (AAAA) records. A name may
appear in more than one
@@ -661,6 +677,13 @@ that dnsmasq should be started with this flag when the platform determines that
reliable time is established, a SIGHUP should be sent to dnsmasq, which enables time checking, and purges the cache of DNS records
which have not been throughly checked.
.TP
.B --dnssec-timestamp=<path>
Enables an alternative way of checking the validity of the system time for DNSSEC (see --dnssec-no-timecheck). In this case, the
system time is considered to be valid once it becomes later than the timestamp on the specified file. The file is created and
its timestamp set automatically by dnsmasq. The file must be stored on a persistent filesystem, so that it and its mtime are carried
over system restarts. The timestamp file is created after dnsmasq has dropped root, so it must be in a location writable by the
unprivileged user that dnsmasq runs as.
.TP
.B --proxy-dnssec
Copy the DNSSEC Authenticated Data bit from upstream servers to downstream clients and cache it. This is an
alternative to having dnsmasq validate DNSSEC, but it depends on the security of the network between
@@ -968,6 +991,18 @@ is given, then read all the files contained in that directory. The advantage of
using this option is the same as for --dhcp-hostsfile: the
dhcp-optsfile will be re-read when dnsmasq receives SIGHUP. Note that
it is possible to encode the information in a
.TP
.B --dhcp-hostsdir=<path>
This is equivalent to dhcp-hostsfile, except for the following. The path MUST be a
directory, and not an individual file. Changed or new files within
the directory are read automatically, without the need to send SIGHUP.
If a file is deleted for changed after it has been read by dnsmasq, then the
host record it contained will remain until dnsmasq recieves a SIGHUP, or
is restarted; ie host records are only added dynamically.
.TP
.B --dhcp-optsdir=<path>
This is equivalent to dhcp-optsfile, with the differences noted for --dhcp-hostsdir.
.TP
.B --dhcp-boot
flag as DHCP options, using the options names bootfile-name,
server-ip-address and tftp-server. This allows these to be included
@@ -1773,7 +1808,8 @@ clears its cache and then re-loads
.I /etc/hosts
and
.I /etc/ethers
and any file given by --dhcp-hostsfile, --dhcp-optsfile or --addn-hosts.
and any file given by --dhcp-hostsfile, --dhcp-hostsdir, --dhcp-optsfile,
--dhcp-optsdir, --addn-hosts or --hostsdir.
The dhcp lease change script is called for all
existing DHCP leases. If
.B
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+5 -2
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@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -413,7 +413,10 @@ size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t n
peer_addr->in.sin_port = 0;
#ifdef HAVE_IPV6
else
peer_addr->in6.sin6_port = 0;
{
peer_addr->in6.sin6_port = 0;
peer_addr->in6.sin6_scope_id = 0;
}
#endif
for (peers = daemon->auth_peers; peers; peers = peers->next)
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+2 -2
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -359,7 +359,7 @@ void send_via_bpf(struct dhcp_packet *mess, size_t len,
iov[3].iov_base = mess;
iov[3].iov_len = len;
while (writev(daemon->dhcp_raw_fd, iov, 4) == -1 && retry_send());
while (retry_send(writev(daemon->dhcp_raw_fd, iov, 4)));
}
#endif /* defined(HAVE_BSD_NETWORK) && defined(HAVE_DHCP) */
+92 -36
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -461,9 +461,11 @@ struct crec *cache_insert(char *name, struct all_addr *addr,
if (flags & (F_IPV4 | F_IPV6 | F_CNAME))
{
log_query(flags | F_UPSTREAM, name, addr, NULL);
/* Don;t mess with TTL for DNSSEC records. */
/* Don't mess with TTL for DNSSEC records. */
if (daemon->max_cache_ttl != 0 && daemon->max_cache_ttl < ttl)
ttl = daemon->max_cache_ttl;
if (daemon->min_cache_ttl != 0 && daemon->min_cache_ttl > ttl)
ttl = daemon->min_cache_ttl;
}
/* if previous insertion failed give up now. */
@@ -833,27 +835,42 @@ static void add_hosts_entry(struct crec *cache, struct all_addr *addr, int addrl
Only insert each unique address once into this hashing structure.
This complexity avoids O(n^2) divergent CPU use whilst reading
large (10000 entry) hosts files. */
large (10000 entry) hosts files.
Note that we only do this process when bulk-reading hosts files,
for incremental reads, rhash is NULL, and we use cache lookups
instead.
*/
/* hash address */
for (j = 0, i = 0; i < addrlen; i++)
j = (j*2 +((unsigned char *)addr)[i]) % hashsz;
for (lookup = rhash[j]; lookup; lookup = lookup->next)
if ((lookup->flags & cache->flags & (F_IPV4 | F_IPV6)) &&
memcmp(&lookup->addr.addr, addr, addrlen) == 0)
{
cache->flags &= ~F_REVERSE;
break;
}
/* maintain address hash chain, insert new unique address */
if (!lookup)
if (rhash)
{
cache->next = rhash[j];
rhash[j] = cache;
/* hash address */
for (j = 0, i = 0; i < addrlen; i++)
j = (j*2 +((unsigned char *)addr)[i]) % hashsz;
for (lookup = rhash[j]; lookup; lookup = lookup->next)
if ((lookup->flags & cache->flags & (F_IPV4 | F_IPV6)) &&
memcmp(&lookup->addr.addr, addr, addrlen) == 0)
{
cache->flags &= ~F_REVERSE;
break;
}
/* maintain address hash chain, insert new unique address */
if (!lookup)
{
cache->next = rhash[j];
rhash[j] = cache;
}
}
else
{
/* incremental read, lookup in cache */
lookup = cache_find_by_addr(NULL, addr, 0, cache->flags & (F_IPV4 | F_IPV6));
if (lookup && lookup->flags & F_HOSTS)
cache->flags &= ~F_REVERSE;
}
cache->uid = index;
memcpy(&cache->addr.addr, addr, addrlen);
cache_hash(cache);
@@ -910,7 +927,7 @@ static int gettok(FILE *f, char *token)
}
}
static int read_hostsfile(char *filename, unsigned int index, int cache_size, struct crec **rhash, int hashsz)
int read_hostsfile(char *filename, unsigned int index, int cache_size, struct crec **rhash, int hashsz)
{
FILE *f = fopen(filename, "r");
char *token = daemon->namebuff, *domain_suffix = NULL;
@@ -956,7 +973,7 @@ static int read_hostsfile(char *filename, unsigned int index, int cache_size, st
addr_count++;
/* rehash every 1000 names. */
if ((name_count - cache_size) > 1000)
if (rhash && ((name_count - cache_size) > 1000))
{
rehash(name_count);
cache_size = name_count;
@@ -1003,7 +1020,9 @@ static int read_hostsfile(char *filename, unsigned int index, int cache_size, st
}
fclose(f);
rehash(name_count);
if (rhash)
rehash(name_count);
my_syslog(LOG_INFO, _("read %s - %d addresses"), filename, addr_count);
@@ -1114,16 +1133,22 @@ void cache_reload(void)
{
if (daemon->cachesize > 0)
my_syslog(LOG_INFO, _("cleared cache"));
return;
}
if (!option_bool(OPT_NO_HOSTS))
total_size = read_hostsfile(HOSTSFILE, SRC_HOSTS, total_size, (struct crec **)daemon->packet, revhashsz);
daemon->addn_hosts = expand_filelist(daemon->addn_hosts);
for (ah = daemon->addn_hosts; ah; ah = ah->next)
if (!(ah->flags & AH_INACTIVE))
total_size = read_hostsfile(ah->fname, ah->index, total_size, (struct crec **)daemon->packet, revhashsz);
else
{
if (!option_bool(OPT_NO_HOSTS))
total_size = read_hostsfile(HOSTSFILE, SRC_HOSTS, total_size, (struct crec **)daemon->packet, revhashsz);
daemon->addn_hosts = expand_filelist(daemon->addn_hosts);
for (ah = daemon->addn_hosts; ah; ah = ah->next)
if (!(ah->flags & AH_INACTIVE))
total_size = read_hostsfile(ah->fname, ah->index, total_size, (struct crec **)daemon->packet, revhashsz);
}
#ifdef HAVE_INOTIFY
set_dynamic_inotify(AH_HOSTS, total_size, (struct crec **)daemon->packet, revhashsz);
#endif
}
#ifdef HAVE_DHCP
@@ -1374,6 +1399,20 @@ int cache_make_stat(struct txt_record *t)
return 1;
}
/* There can be names in the cache containing control chars, don't
mess up logging or open security holes. */
static char *sanitise(char *name)
{
unsigned char *r;
if (name)
for (r = (unsigned char *)name; *r; r++)
if (!isprint((int)*r))
return "<name unprintable>";
return name;
}
void dump_cache(time_t now)
{
struct server *serv, *serv1;
@@ -1427,9 +1466,9 @@ void dump_cache(time_t now)
*a = 0;
if (strlen(n) == 0 && !(cache->flags & F_REVERSE))
n = "<Root>";
p += sprintf(p, "%-30.30s ", n);
p += sprintf(p, "%-30.30s ", sanitise(n));
if ((cache->flags & F_CNAME) && !is_outdated_cname_pointer(cache))
a = cache_get_cname_target(cache);
a = sanitise(cache_get_cname_target(cache));
#ifdef HAVE_DNSSEC
else if (cache->flags & F_DS)
{
@@ -1503,7 +1542,13 @@ char *record_source(unsigned int index)
for (ah = daemon->addn_hosts; ah; ah = ah->next)
if (ah->index == index)
return ah->fname;
#ifdef HAVE_INOTIFY
for (ah = daemon->dynamic_dirs; ah; ah = ah->next)
if (ah->index == index)
return ah->fname;
#endif
return "<unknown>";
}
@@ -1556,6 +1601,8 @@ void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg)
if (!option_bool(OPT_LOG))
return;
name = sanitise(name);
if (addr)
{
if (flags & F_KEYTAG)
@@ -1638,7 +1685,16 @@ void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg)
if (strlen(name) == 0)
name = ".";
my_syslog(LOG_INFO, "%s %s %s %s", source, name, verb, dest);
if (option_bool(OPT_EXTRALOG))
{
int port = prettyprint_addr(daemon->log_source_addr, daemon->addrbuff2);
if (flags & F_NOEXTRA)
my_syslog(LOG_INFO, "* %s/%u %s %s %s %s", daemon->addrbuff2, port, source, name, verb, dest);
else
my_syslog(LOG_INFO, "%u %s/%u %s %s %s %s", daemon->log_display_id, daemon->addrbuff2, port, source, name, verb, dest);
}
else
my_syslog(LOG_INFO, "%s %s %s %s", source, name, verb, dest);
}
+15 -2
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -17,6 +17,7 @@
#define FTABSIZ 150 /* max number of outstanding requests (default) */
#define MAX_PROCS 20 /* max no children for TCP requests */
#define CHILD_LIFETIME 150 /* secs 'till terminated (RFC1035 suggests > 120s) */
#define TCP_MAX_QUERIES 100 /* Maximum number of queries per incoming TCP connection */
#define EDNS_PKTSZ 4096 /* default max EDNS.0 UDP packet from RFC5625 */
#define KEYBLOCK_LEN 40 /* choose to mininise fragmentation when storing DNSSEC keys */
#define DNSSEC_WORK 50 /* Max number of queries to validate one question */
@@ -26,6 +27,7 @@
#define RANDOM_SOCKS 64 /* max simultaneous random ports */
#define LEASE_RETRY 60 /* on error, retry writing leasefile after LEASE_RETRY seconds */
#define CACHESIZ 150 /* default cache size */
#define TTL_FLOOR_LIMIT 3600 /* don't allow --min-cache-ttl to raise TTL above this under any circumstances */
#define MAXLEASES 1000 /* maximum number of DHCP leases */
#define PING_WAIT 3 /* wait for ping address-in-use test */
#define PING_CACHE_TIME 30 /* Ping test assumed to be valid this long. */
@@ -113,6 +115,8 @@ HAVE_DNSSEC
HAVE_LOOP
include functionality to probe for and remove DNS forwarding loops.
HAVE_INOTIFY
use the Linux inotify facility to efficiently re-read configuration files.
NO_IPV6
NO_TFTP
@@ -121,6 +125,7 @@ NO_DHCP6
NO_SCRIPT
NO_LARGEFILE
NO_AUTH
NO_INOTIFY
these are avilable to explictly disable compile time options which would
otherwise be enabled automatically (HAVE_IPV6, >2Gb file sizes) or
which are enabled by default in the distributed source tree. Building dnsmasq
@@ -353,6 +358,10 @@ HAVE_SOCKADDR_SA_LEN
#undef HAVE_LOOP
#endif
#if defined (HAVE_LINUX_NETWORK) && !defined(NO_INOTIFY)
#define HAVE_INOTIFY
#endif
/* Define a string indicating which options are in use.
DNSMASQP_COMPILE_OPTS is only defined in dnsmasq.c */
@@ -426,7 +435,11 @@ static char *compile_opts =
#ifndef HAVE_LOOP
"no-"
#endif
"loop-detect";
"loop-detect "
#ifndef HAVE_INOTIFY
"no-"
#endif
"inotify";
#endif
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+27 -22
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -376,10 +376,9 @@ void dhcp_packet(time_t now, int pxe_fd)
}
}
#if defined(HAVE_LINUX_NETWORK)
else if ((ntohs(mess->flags) & 0x8000) || mess->hlen == 0 ||
mess->hlen > sizeof(ifr.ifr_addr.sa_data) || mess->htype == 0)
else
{
/* broadcast to 255.255.255.255 (or mac address invalid) */
/* fill cmsg for outbound interface (both broadcast & unicast) */
struct in_pktinfo *pkt;
msg.msg_control = control_u.control;
msg.msg_controllen = sizeof(control_u);
@@ -389,23 +388,29 @@ void dhcp_packet(time_t now, int pxe_fd)
pkt->ipi_spec_dst.s_addr = 0;
msg.msg_controllen = cmptr->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
cmptr->cmsg_level = IPPROTO_IP;
cmptr->cmsg_type = IP_PKTINFO;
dest.sin_addr.s_addr = INADDR_BROADCAST;
dest.sin_port = htons(daemon->dhcp_client_port);
}
else
{
/* unicast to unconfigured client. Inject mac address direct into ARP cache.
struct sockaddr limits size to 14 bytes. */
dest.sin_addr = mess->yiaddr;
dest.sin_port = htons(daemon->dhcp_client_port);
memcpy(&arp_req.arp_pa, &dest, sizeof(struct sockaddr_in));
arp_req.arp_ha.sa_family = mess->htype;
memcpy(arp_req.arp_ha.sa_data, mess->chaddr, mess->hlen);
/* interface name already copied in */
arp_req.arp_flags = ATF_COM;
if (ioctl(daemon->dhcpfd, SIOCSARP, &arp_req) == -1)
my_syslog(MS_DHCP | LOG_ERR, _("ARP-cache injection failed: %s"), strerror(errno));
cmptr->cmsg_type = IP_PKTINFO;
if ((ntohs(mess->flags) & 0x8000) || mess->hlen == 0 ||
mess->hlen > sizeof(ifr.ifr_addr.sa_data) || mess->htype == 0)
{
/* broadcast to 255.255.255.255 (or mac address invalid) */
dest.sin_addr.s_addr = INADDR_BROADCAST;
dest.sin_port = htons(daemon->dhcp_client_port);
}
else
{
/* unicast to unconfigured client. Inject mac address direct into ARP cache.
struct sockaddr limits size to 14 bytes. */
dest.sin_addr = mess->yiaddr;
dest.sin_port = htons(daemon->dhcp_client_port);
memcpy(&arp_req.arp_pa, &dest, sizeof(struct sockaddr_in));
arp_req.arp_ha.sa_family = mess->htype;
memcpy(arp_req.arp_ha.sa_data, mess->chaddr, mess->hlen);
/* interface name already copied in */
arp_req.arp_flags = ATF_COM;
if (ioctl(daemon->dhcpfd, SIOCSARP, &arp_req) == -1)
my_syslog(MS_DHCP | LOG_ERR, _("ARP-cache injection failed: %s"), strerror(errno));
}
}
#elif defined(HAVE_SOLARIS_NETWORK)
else if ((ntohs(mess->flags) & 0x8000) || mess->hlen != ETHER_ADDR_LEN || mess->htype != ARPHRD_ETHER)
@@ -443,7 +448,7 @@ void dhcp_packet(time_t now, int pxe_fd)
setsockopt(fd, IPPROTO_IP, IP_BOUND_IF, &iface_index, sizeof(iface_index));
#endif
while(sendmsg(fd, &msg, 0) == -1 && retry_send());
while(retry_send(sendmsg(fd, &msg, 0)));
}
/* check against secondary interface addresses */
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+7 -5
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -225,9 +225,9 @@ void dhcp6_packet(time_t now)
if (port != 0)
{
from.sin6_port = htons(port);
while (sendto(daemon->dhcp6fd, daemon->outpacket.iov_base, save_counter(0),
0, (struct sockaddr *)&from, sizeof(from)) == -1 &&
retry_send());
while (retry_send(sendto(daemon->dhcp6fd, daemon->outpacket.iov_base,
save_counter(0), 0, (struct sockaddr *)&from,
sizeof(from))));
}
}
@@ -246,7 +246,9 @@ void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsi
neigh.code = 0;
neigh.reserved = 0;
neigh.target = *client;
/* RFC4443 section-2.3: checksum has to be zero to be calculated */
neigh.checksum = 0;
memset(&addr, 0, sizeof(addr));
#ifdef HAVE_SOCKADDR_SA_LEN
addr.sin6_len = sizeof(struct sockaddr_in6);
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+82 -40
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -93,6 +93,8 @@ int main (int argc, char **argv)
daemon->packet = safe_malloc(daemon->packet_buff_sz);
daemon->addrbuff = safe_malloc(ADDRSTRLEN);
if (option_bool(OPT_EXTRALOG))
daemon->addrbuff2 = safe_malloc(ADDRSTRLEN);
#ifdef HAVE_DNSSEC
if (option_bool(OPT_DNSSEC_VALID))
@@ -141,15 +143,20 @@ int main (int argc, char **argv)
reset_option_bool(OPT_CLEVERBIND);
}
#endif
#ifndef HAVE_INOTIFY
if (daemon->dynamic_dirs)
die(_("dhcp-hostsdir, dhcp-optsdir and hostsdir are not supported on this platform"), NULL, EC_BADCONF);
#endif
if (option_bool(OPT_DNSSEC_VALID))
{
#ifdef HAVE_DNSSEC
if (!daemon->ds)
die(_("No trust anchors provided for DNSSEC"), NULL, EC_BADCONF);
die(_("no trust anchors provided for DNSSEC"), NULL, EC_BADCONF);
if (daemon->cachesize < CACHESIZ)
die(_("Cannot reduce cache size from default when DNSSEC enabled"), NULL, EC_BADCONF);
die(_("cannot reduce cache size from default when DNSSEC enabled"), NULL, EC_BADCONF);
#else
die(_("DNSSEC not available: set HAVE_DNSSEC in src/config.h"), NULL, EC_BADCONF);
#endif
@@ -162,10 +169,10 @@ int main (int argc, char **argv)
#ifdef HAVE_CONNTRACK
if (option_bool(OPT_CONNTRACK) && (daemon->query_port != 0 || daemon->osport))
die (_("Cannot use --conntrack AND --query-port"), NULL, EC_BADCONF);
die (_("cannot use --conntrack AND --query-port"), NULL, EC_BADCONF);
#else
if (option_bool(OPT_CONNTRACK))
die(_("Conntrack support not available: set HAVE_CONNTRACK in src/config.h"), NULL, EC_BADCONF);
die(_("conntrack support not available: set HAVE_CONNTRACK in src/config.h"), NULL, EC_BADCONF);
#endif
#ifdef HAVE_SOLARIS_NETWORK
@@ -185,7 +192,7 @@ int main (int argc, char **argv)
#ifndef HAVE_LOOP
if (option_bool(OPT_LOOP_DETECT))
die(_("Loop detection not available: set HAVE_LOOP in src/config.h"), NULL, EC_BADCONF);
die(_("loop detection not available: set HAVE_LOOP in src/config.h"), NULL, EC_BADCONF);
#endif
now = dnsmasq_time();
@@ -314,13 +321,15 @@ int main (int argc, char **argv)
#ifdef HAVE_DNSSEC
blockdata_init();
#endif
#ifdef HAVE_LINUX_NETWORK
if (!option_bool(OPT_NO_POLL))
inotify_dnsmasq_init();
#endif
}
#ifdef HAVE_INOTIFY
if (daemon->port != 0 || daemon->dhcp || daemon->doing_dhcp6)
inotify_dnsmasq_init();
else
daemon->inotifyfd = -1;
#endif
if (option_bool(OPT_DBUS))
#ifdef HAVE_DBUS
{
@@ -360,7 +369,7 @@ int main (int argc, char **argv)
if (baduser)
die(_("unknown user or group: %s"), baduser, EC_BADCONF);
/* implement group defaults, "dip" if available, or group associated with uid */
if (!daemon->group_set && !gp)
{
@@ -435,7 +444,7 @@ int main (int argc, char **argv)
char *msg;
/* close our copy of write-end */
close(err_pipe[1]);
while (retry_send(close(err_pipe[1])));
/* check for errors after the fork */
if (read_event(err_pipe[0], &ev, &msg))
@@ -444,7 +453,7 @@ int main (int argc, char **argv)
_exit(EC_GOOD);
}
close(err_pipe[0]);
while (retry_send(close(err_pipe[0])));
/* NO calls to die() from here on. */
@@ -496,10 +505,12 @@ int main (int argc, char **argv)
{
if (!read_write(fd, (unsigned char *)daemon->namebuff, strlen(daemon->namebuff), 0))
err = 1;
while (!err && close(fd) == -1)
if (!retry_send())
err = 1;
else
{
while (retry_send(close(fd)));
if (errno != 0)
err = 1;
}
}
if (err)
@@ -618,6 +629,8 @@ int main (int argc, char **argv)
}
#ifdef HAVE_LINUX_NETWORK
free(hdr);
free(data);
if (option_bool(OPT_DEBUG))
prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
#endif
@@ -675,9 +688,24 @@ int main (int argc, char **argv)
#ifdef HAVE_DNSSEC
if (option_bool(OPT_DNSSEC_VALID))
{
int rc;
/* Delay creating the timestamp file until here, after we've changed user, so that
it has the correct owner to allow updating the mtime later.
This means we have to report fatal errors via the pipe. */
if ((rc = setup_timestamp()) == -1)
{
send_event(err_pipe[1], EVENT_TIME_ERR, errno, daemon->timestamp_file);
_exit(0);
}
my_syslog(LOG_INFO, _("DNSSEC validation enabled"));
if (option_bool(OPT_DNSSEC_TIME))
my_syslog(LOG_INFO, _("DNSSEC signature timestamps not checked until first cache reload"));
if (rc == 1)
my_syslog(LOG_INFO, _("DNSSEC signature timestamps not checked until system time valid"));
}
#endif
@@ -743,7 +771,7 @@ int main (int argc, char **argv)
#endif
#ifdef HAVE_TFTP
if (option_bool(OPT_TFTP))
if (option_bool(OPT_TFTP))
{
#ifdef FD_SETSIZE
if (FD_SETSIZE < (unsigned)max_fd)
@@ -787,14 +815,14 @@ int main (int argc, char **argv)
/* finished start-up - release original process */
if (err_pipe[1] != -1)
close(err_pipe[1]);
while (retry_send(close(err_pipe[1])));
if (daemon->port != 0)
check_servers();
pid = getpid();
#ifdef HAVE_LINUX_NETWORK
#ifdef HAVE_INOTIFY
/* Using inotify, have to select a resolv file at startup */
poll_resolv(1, 0, now);
#endif
@@ -864,15 +892,18 @@ int main (int argc, char **argv)
bump_maxfd(daemon->icmp6fd, &maxfd);
}
#endif
#if defined(HAVE_LINUX_NETWORK)
FD_SET(daemon->netlinkfd, &rset);
bump_maxfd(daemon->netlinkfd, &maxfd);
if (daemon->port != 0 && !option_bool(OPT_NO_POLL))
#ifdef HAVE_INOTIFY
if (daemon->inotifyfd != -1)
{
FD_SET(daemon->inotifyfd, &rset);
bump_maxfd(daemon->inotifyfd, &maxfd);
}
#endif
#if defined(HAVE_LINUX_NETWORK)
FD_SET(daemon->netlinkfd, &rset);
bump_maxfd(daemon->netlinkfd, &maxfd);
#elif defined(HAVE_BSD_NETWORK)
FD_SET(daemon->routefd, &rset);
bump_maxfd(daemon->routefd, &maxfd);
@@ -940,9 +971,12 @@ int main (int argc, char **argv)
route_sock();
#endif
#ifdef HAVE_LINUX_NETWORK
if (daemon->port != 0 && !option_bool(OPT_NO_POLL) && FD_ISSET(daemon->inotifyfd, &rset) && inotify_check())
poll_resolv(1, 1, now);
#ifdef HAVE_INOTIFY
if (daemon->inotifyfd != -1 && FD_ISSET(daemon->inotifyfd, &rset) && inotify_check(now))
{
if (daemon->port != 0 && !option_bool(OPT_NO_POLL))
poll_resolv(1, 1, now);
}
#else
/* Check for changes to resolv files once per second max. */
/* Don't go silent for long periods if the clock goes backwards. */
@@ -1144,6 +1178,9 @@ static void fatal_event(struct event_desc *ev, char *msg)
case EVENT_TFTP_ERR:
die(_("TFTP directory %s inaccessible: %s"), msg, EC_FILE);
case EVENT_TIME_ERR:
die(_("cannot create timestamp file %s: %s" ), msg, EC_BADCONF);
}
}
@@ -1284,7 +1321,7 @@ static void async_event(int pipe, time_t now)
do {
helper_write();
} while (!helper_buf_empty() || do_script_run(now));
close(daemon->helperfd);
while (retry_send(close(daemon->helperfd)));
}
#endif
@@ -1383,6 +1420,9 @@ void clear_cache_and_reload(time_t now)
if (option_bool(OPT_ETHERS))
dhcp_read_ethers();
reread_dhcp();
#ifdef HAVE_INOTIFY
set_dynamic_inotify(AH_DHCP_HST | AH_DHCP_OPT, 0, NULL, 0);
#endif
dhcp_update_configs(daemon->dhcp_conf);
lease_update_from_configs();
lease_update_file(now);
@@ -1506,7 +1546,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
if (getsockname(confd, (struct sockaddr *)&tcp_addr, &tcp_len) == -1)
{
close(confd);
while (retry_send(close(confd)));
continue;
}
@@ -1571,7 +1611,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
if (!client_ok)
{
shutdown(confd, SHUT_RDWR);
close(confd);
while (retry_send(close(confd)));
}
#ifndef NO_FORK
else if (!option_bool(OPT_DEBUG) && (p = fork()) != 0)
@@ -1586,7 +1626,10 @@ static void check_dns_listeners(fd_set *set, time_t now)
break;
}
}
close(confd);
while (retry_send(close(confd)));
/* The child can use up to TCP_MAX_QUERIES ids, so skip that many. */
daemon->log_id += TCP_MAX_QUERIES;
}
#endif
else
@@ -1628,7 +1671,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
buff = tcp_request(confd, now, &tcp_addr, netmask, auth_dns);
shutdown(confd, SHUT_RDWR);
close(confd);
while (retry_send(close(confd)));
if (buff)
free(buff);
@@ -1637,7 +1680,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
if (s->tcpfd != -1)
{
shutdown(s->tcpfd, SHUT_RDWR);
close(s->tcpfd);
while (retry_send(close(s->tcpfd)));
}
#ifndef NO_FORK
if (!option_bool(OPT_DEBUG))
@@ -1715,9 +1758,8 @@ int icmp_ping(struct in_addr addr)
j = (j & 0xffff) + (j >> 16);
packet.icmp.icmp_cksum = (j == 0xffff) ? j : ~j;
while (sendto(fd, (char *)&packet.icmp, sizeof(struct icmp), 0,
(struct sockaddr *)&saddr, sizeof(saddr)) == -1 &&
retry_send());
while (retry_send(sendto(fd, (char *)&packet.icmp, sizeof(struct icmp), 0,
(struct sockaddr *)&saddr, sizeof(saddr))));
for (now = start = dnsmasq_time();
difftime(now, start) < (float)PING_WAIT;)
@@ -1779,7 +1821,7 @@ int icmp_ping(struct in_addr addr)
}
#if defined(HAVE_LINUX_NETWORK) || defined(HAVE_SOLARIS_NETWORK)
close(fd);
while (retry_send(close(fd)));
#else
opt = 1;
setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &opt, sizeof(opt));
+34 -12
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -14,7 +14,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define COPYRIGHT "Copyright (c) 2000-2014 Simon Kelley"
#define COPYRIGHT "Copyright (c) 2000-2015 Simon Kelley"
#ifndef NO_LARGEFILE
/* Ensure we can use files >2GB (log files may grow this big) */
@@ -167,6 +167,7 @@ struct event_desc {
#define EVENT_INIT 21
#define EVENT_NEWADDR 22
#define EVENT_NEWROUTE 23
#define EVENT_TIME_ERR 24
/* Exit codes. */
#define EC_GOOD 0
@@ -238,7 +239,8 @@ struct event_desc {
#define OPT_DNSSEC_NO_SIGN 48
#define OPT_LOCAL_SERVICE 49
#define OPT_LOOP_DETECT 50
#define OPT_LAST 51
#define OPT_EXTRALOG 51
#define OPT_LAST 52
/* extra flags for my_syslog, we use a couple of facilities since they are known
not to occupy the same bits as priorities, no matter how syslog.h is set up. */
@@ -442,6 +444,7 @@ struct crec {
#define F_NO_RR (1u<<25)
#define F_IPSET (1u<<26)
#define F_NSIGMATCH (1u<<27)
#define F_NOEXTRA (1u<<28)
/* Values of uid in crecs with F_CONFIG bit set. */
#define SRC_INTERFACE 0
@@ -542,19 +545,26 @@ struct resolvc {
int is_default, logged;
time_t mtime;
char *name;
#ifdef HAVE_LINUX_NETWORK
#ifdef HAVE_INOTIFY
int wd; /* inotify watch descriptor */
char *file; /* pointer to file part if path */
#endif
};
/* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile */
/* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile and dhcp-hostsdir*/
#define AH_DIR 1
#define AH_INACTIVE 2
#define AH_WD_DONE 4
#define AH_HOSTS 8
#define AH_DHCP_HST 16
#define AH_DHCP_OPT 32
struct hostsfile {
struct hostsfile *next;
int flags;
char *fname;
#ifdef HAVE_INOTIFY
int wd; /* inotify watch descriptor */
#endif
unsigned int index; /* matches to cache entries for logging */
};
@@ -599,7 +609,7 @@ struct frec {
#endif
unsigned int iface;
unsigned short orig_id, new_id;
int fd, forwardall, flags;
int log_id, fd, forwardall, flags;
time_t time;
unsigned char *hash[HASH_SIZE];
#ifdef HAVE_DNSSEC
@@ -941,7 +951,7 @@ extern struct daemon {
int max_logs; /* queue limit */
int cachesize, ftabsize;
int port, query_port, min_port;
unsigned long local_ttl, neg_ttl, max_ttl, max_cache_ttl, auth_ttl;
unsigned long local_ttl, neg_ttl, max_ttl, min_cache_ttl, max_cache_ttl, auth_ttl;
struct hostsfile *addn_hosts;
struct dhcp_context *dhcp, *dhcp6;
struct ra_interface *ra_interfaces;
@@ -959,7 +969,7 @@ extern struct daemon {
int doing_ra, doing_dhcp6;
struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names;
struct dhcp_netid_list *force_broadcast, *bootp_dynamic;
struct hostsfile *dhcp_hosts_file, *dhcp_opts_file;
struct hostsfile *dhcp_hosts_file, *dhcp_opts_file, *dynamic_dirs;
int dhcp_max, tftp_max;
int dhcp_server_port, dhcp_client_port;
int start_tftp_port, end_tftp_port;
@@ -977,6 +987,7 @@ extern struct daemon {
#endif
#ifdef HAVE_DNSSEC
struct ds_config *ds;
char *timestamp_file;
#endif
/* globally used stuff for DNS */
@@ -1002,11 +1013,16 @@ extern struct daemon {
struct randfd randomsocks[RANDOM_SOCKS];
int v6pktinfo;
struct addrlist *interface_addrs; /* list of all addresses/prefix lengths associated with all local interfaces */
int log_id, log_display_id; /* ids of transactions for logging */
union mysockaddr *log_source_addr;
/* DHCP state */
int dhcpfd, helperfd, pxefd;
#ifdef HAVE_INOTIFY
int inotifyfd;
#endif
#if defined(HAVE_LINUX_NETWORK)
int netlinkfd, inotifyfd;
int netlinkfd;
#elif defined(HAVE_BSD_NETWORK)
int dhcp_raw_fd, dhcp_icmp_fd, routefd;
#endif
@@ -1033,6 +1049,7 @@ extern struct daemon {
/* utility string buffer, hold max sized IP address as string */
char *addrbuff;
char *addrbuff2; /* only allocated when OPT_EXTRALOG */
} *daemon;
@@ -1059,6 +1076,8 @@ int cache_make_stat(struct txt_record *t);
char *cache_get_name(struct crec *crecp);
char *cache_get_cname_target(struct crec *crecp);
struct crec *cache_enumerate(int init);
int read_hostsfile(char *filename, unsigned int index, int cache_size,
struct crec **rhash, int hashsz);
/* blockdata.c */
#ifdef HAVE_DNSSEC
@@ -1134,6 +1153,7 @@ int dnssec_chase_cname(time_t now, struct dns_header *header, size_t plen, char
int dnskey_keytag(int alg, int flags, unsigned char *rdata, int rdlen);
size_t filter_rrsigs(struct dns_header *header, size_t plen);
unsigned char* hash_questions(struct dns_header *header, size_t plen, char *name);
int setup_timestamp(void);
/* util.c */
void rand_init(void);
@@ -1157,7 +1177,7 @@ int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen);
u64 addr6part(struct in6_addr *addr);
void setaddr6part(struct in6_addr *addr, u64 host);
#endif
int retry_send(void);
int retry_send(ssize_t rc);
void prettyprint_time(char *buf, unsigned int t);
int prettyprint_addr(union mysockaddr *addr, char *buf);
int parse_hex(char *in, unsigned char *out, int maxlen,
@@ -1192,6 +1212,7 @@ void reset_option_bool(unsigned int opt);
struct hostsfile *expand_filelist(struct hostsfile *list);
char *parse_server(char *arg, union mysockaddr *addr,
union mysockaddr *source_addr, char *interface, int *flags);
int option_read_dynfile(char *file, int flags);
/* forward.c */
void reply_query(int fd, int family, time_t now);
@@ -1479,7 +1500,8 @@ int detect_loop(char *query, int type);
#endif
/* inotify.c */
#ifdef HAVE_LINUX_NETWORK
#ifdef HAVE_INOTIFY
void inotify_dnsmasq_init();
int inotify_check(void);
int inotify_check(time_t now);
void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz);
#endif
+103 -18
View File
@@ -1,5 +1,5 @@
/* dnssec.c is Copyright (c) 2012 Giovanni Bajo <rasky@develer.com>
and Copyright (c) 2012-2014 Simon Kelley
and Copyright (c) 2012-2015 Simon Kelley
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
@@ -34,6 +34,7 @@
#include <nettle/dsa-compat.h>
#endif
#include <utime.h>
#define SERIAL_UNDEF -100
#define SERIAL_EQ 0
@@ -275,7 +276,7 @@ static int dnsmasq_ecdsa_verify(struct blockdata *key_data, unsigned int key_len
}
if (sig_len != 2*t || key_len != 2*t ||
(p = blockdata_retrieve(key_data, key_len, NULL)))
!(p = blockdata_retrieve(key_data, key_len, NULL)))
return 0;
mpz_import(x, t , 1, 1, 0, 0, p);
@@ -394,17 +395,90 @@ static int serial_compare_32(unsigned long s1, unsigned long s2)
return SERIAL_UNDEF;
}
/* Called at startup. If the timestamp file is configured and exists, put its mtime on
timestamp_time. If it doesn't exist, create it, and set the mtime to 1-1-2015.
return -1 -> Cannot create file.
0 -> not using timestamp, or timestamp exists and is in past.
1 -> timestamp exists and is in future.
*/
static time_t timestamp_time;
static int back_to_the_future;
int setup_timestamp(void)
{
struct stat statbuf;
back_to_the_future = 0;
if (!daemon->timestamp_file)
return 0;
if (stat(daemon->timestamp_file, &statbuf) != -1)
{
timestamp_time = statbuf.st_mtime;
check_and_exit:
if (difftime(timestamp_time, time(0)) <= 0)
{
/* time already OK, update timestamp, and do key checking from the start. */
if (utime(daemon->timestamp_file, NULL) == -1)
my_syslog(LOG_ERR, _("failed to update mtime on %s: %s"), daemon->timestamp_file, strerror(errno));
back_to_the_future = 1;
return 0;
}
return 1;
}
if (errno == ENOENT)
{
/* NB. for explanation of O_EXCL flag, see comment on pidfile in dnsmasq.c */
int fd = open(daemon->timestamp_file, O_WRONLY | O_CREAT | O_NONBLOCK | O_EXCL, 0666);
if (fd != -1)
{
struct utimbuf timbuf;
close(fd);
timestamp_time = timbuf.actime = timbuf.modtime = 1420070400; /* 1-1-2015 */
if (utime(daemon->timestamp_file, &timbuf) == 0)
goto check_and_exit;
}
}
return -1;
}
/* Check whether today/now is between date_start and date_end */
static int check_date_range(unsigned long date_start, unsigned long date_end)
{
unsigned long curtime;
unsigned long curtime = time(0);
/* Checking timestamps may be temporarily disabled */
if (option_bool(OPT_DNSSEC_TIME))
/* If the current time if _before_ the timestamp
on our persistent timestamp file, then assume the
time if not yet correct, and don't check the
key timestamps. As soon as the current time is
later then the timestamp, update the timestamp
and start checking keys */
if (daemon->timestamp_file)
{
if (back_to_the_future == 0 && difftime(timestamp_time, curtime) <= 0)
{
if (utime(daemon->timestamp_file, NULL) != 0)
my_syslog(LOG_ERR, _("failed to update mtime on %s: %s"), daemon->timestamp_file, strerror(errno));
back_to_the_future = 1;
set_option_bool(OPT_DNSSEC_TIME);
queue_event(EVENT_RELOAD); /* purge cache */
}
if (back_to_the_future == 0)
return 1;
}
else if (option_bool(OPT_DNSSEC_TIME))
return 1;
curtime = time(0);
/* We must explicitly check against wanted values, because of SERIAL_UNDEF */
return serial_compare_32(curtime, date_start) == SERIAL_GT
&& serial_compare_32(curtime, date_end) == SERIAL_LT;
@@ -1038,7 +1112,7 @@ int dnssec_validate_by_ds(time_t now, struct dns_header *header, size_t plen, ch
else
{
a.addr.keytag = keytag;
log_query(F_KEYTAG | F_UPSTREAM, name, &a, "DNSKEY keytag %u");
log_query(F_NOEXTRA | F_KEYTAG | F_UPSTREAM, name, &a, "DNSKEY keytag %u");
recp1->addr.key.keylen = rdlen - 4;
recp1->addr.key.keydata = key;
@@ -1092,7 +1166,7 @@ int dnssec_validate_by_ds(time_t now, struct dns_header *header, size_t plen, ch
return STAT_SECURE;
}
log_query(F_UPSTREAM, name, NULL, "BOGUS DNSKEY");
log_query(F_NOEXTRA | F_UPSTREAM, name, NULL, "BOGUS DNSKEY");
return STAT_BOGUS;
}
@@ -1103,7 +1177,7 @@ int dnssec_validate_by_ds(time_t now, struct dns_header *header, size_t plen, ch
STAT_NO_DS It's proved there's no DS here.
STAT_NO_NS It's proved there's no DS _or_ NS here.
STAT_BOGUS no DS in reply or not signed, fails validation, bad packet.
STAT_NEED_DNSKEY DNSKEY records to validate a DS not found, name in keyname
STAT_NEED_KEY DNSKEY records to validate a DS not found, name in keyname
*/
int dnssec_validate_ds(time_t now, struct dns_header *header, size_t plen, char *name, char *keyname, int class)
@@ -1134,9 +1208,12 @@ int dnssec_validate_ds(time_t now, struct dns_header *header, size_t plen, char
if (!(p = skip_section(p, ntohs(header->ancount), header, plen)))
val = STAT_BOGUS;
if (val == STAT_BOGUS)
/* If the key needed to validate the DS is on the same domain as the DS, we'll
loop getting nowhere. Stop that now. This can happen of the DS answer comes
from the DS's zone, and not the parent zone. */
if (val == STAT_BOGUS || (val == STAT_NEED_KEY && hostname_isequal(name, keyname)))
{
log_query(F_UPSTREAM, name, NULL, "BOGUS DS");
log_query(F_NOEXTRA | F_UPSTREAM, name, NULL, "BOGUS DS");
return STAT_BOGUS;
}
@@ -1201,7 +1278,7 @@ int dnssec_validate_ds(time_t now, struct dns_header *header, size_t plen, char
cache_end_insert();
log_query(F_UPSTREAM, name, NULL, nons ? "no delegation" : "no DS");
log_query(F_NOEXTRA | F_UPSTREAM, name, NULL, nons ? "no delegation" : "no DS");
}
return nons ? STAT_NO_NS : STAT_NO_DS;
@@ -1818,11 +1895,14 @@ int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, ch
struct blockdata *key;
struct crec *crecp;
char *wildname;
int have_wildcard = 0;
rc = validate_rrset(now, header, plen, class1, type1, name, keyname, &wildname, NULL, 0, 0, 0);
if (rc == STAT_SECURE_WILDCARD)
{
have_wildcard = 1;
/* An attacker replay a wildcard answer with a different
answer and overlay a genuine RR. To prove this
hasn't happened, the answer must prove that
@@ -1885,7 +1965,7 @@ int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, ch
else
{
a.addr.keytag = keytag;
log_query(F_KEYTAG | F_UPSTREAM, name, &a, "DS keytag %u");
log_query(F_NOEXTRA | F_KEYTAG | F_UPSTREAM, name, &a, "DS keytag %u");
crecp->addr.ds.digest = digest;
crecp->addr.ds.keydata = key;
crecp->addr.ds.algo = algo;
@@ -1913,7 +1993,11 @@ int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, ch
p2 += 13; /* labels, orig_ttl, expiration, inception */
GETSHORT(keytag, p2);
if ((key = blockdata_alloc((char*)psave, rdlen2)))
/* We don't cache sigs for wildcard answers, because to reproduce the
answer from the cache will require one or more NSEC/NSEC3 records
which we don't cache. The lack of the RRSIG ensures that a query for
this RRset asking for a secure answer will always be forwarded. */
if (!have_wildcard && (key = blockdata_alloc((char*)psave, rdlen2)))
{
if (!(crecp = cache_insert(name, &a, now, ttl, F_FORWARD | F_DNSKEY | F_DS)))
blockdata_free(key);
@@ -1951,7 +2035,8 @@ int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, ch
/* NXDOMAIN or NODATA reply, prove that (name, class1, type1) can't exist */
/* First marshall the NSEC records, if we've not done it previously */
if (!nsec_type && !(nsec_type = find_nsec_records(header, plen, &nsecs, &nsec_count, qclass)))
return STAT_BOGUS; /* No NSECs */
return STAT_NO_SIG; /* No NSECs, this is probably a dangling CNAME pointing into
an unsigned zone. Return STAT_NO_SIG to cause this to be proved. */
/* Get name of missing answer */
if (!extract_name(header, plen, &qname, name, 1, 0))
@@ -2058,10 +2143,10 @@ size_t dnssec_generate_query(struct dns_header *header, char *end, char *name, i
char *types = querystr("dnssec-query", type);
if (addr->sa.sa_family == AF_INET)
log_query(F_DNSSEC | F_IPV4, name, (struct all_addr *)&addr->in.sin_addr, types);
log_query(F_NOEXTRA | F_DNSSEC | F_IPV4, name, (struct all_addr *)&addr->in.sin_addr, types);
#ifdef HAVE_IPV6
else
log_query(F_DNSSEC | F_IPV6, name, (struct all_addr *)&addr->in6.sin6_addr, types);
log_query(F_NOEXTRA | F_DNSSEC | F_IPV6, name, (struct all_addr *)&addr->in6.sin6_addr, types);
#endif
header->qdcount = htons(1);
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+56 -30
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -103,15 +103,11 @@ int send_from(int fd, int nowild, char *packet, size_t len,
#endif
}
while (sendmsg(fd, &msg, 0) == -1)
while (retry_send(sendmsg(fd, &msg, 0)));
/* If interface is still in DAD, EINVAL results - ignore that. */
if (errno != 0 && errno != EINVAL)
{
if (retry_send())
continue;
/* If interface is still in DAD, EINVAL results - ignore that. */
if (errno == EINVAL)
break;
my_syslog(LOG_ERR, _("failed to send packet: %s"), strerror(errno));
return 0;
}
@@ -279,10 +275,10 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
plen = forward->stash_len;
if (forward->sentto->addr.sa.sa_family == AF_INET)
log_query(F_DNSSEC | F_IPV4, "retry", (struct all_addr *)&forward->sentto->addr.in.sin_addr, "dnssec");
log_query(F_NOEXTRA | F_DNSSEC | F_IPV4, "retry", (struct all_addr *)&forward->sentto->addr.in.sin_addr, "dnssec");
#ifdef HAVE_IPV6
else
log_query(F_DNSSEC | F_IPV6, "retry", (struct all_addr *)&forward->sentto->addr.in6.sin6_addr, "dnssec");
log_query(F_NOEXTRA | F_DNSSEC | F_IPV6, "retry", (struct all_addr *)&forward->sentto->addr.in6.sin6_addr, "dnssec");
#endif
if (forward->sentto->sfd)
@@ -297,9 +293,9 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
fd = forward->rfd4->fd;
}
while (sendto(fd, (char *)header, plen, 0,
&forward->sentto->addr.sa,
sa_len(&forward->sentto->addr)) == -1 && retry_send());
while (retry_send( sendto(fd, (char *)header, plen, 0,
&forward->sentto->addr.sa,
sa_len(&forward->sentto->addr))));
return 1;
}
@@ -389,6 +385,9 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
struct server *firstsentto = start;
int forwarded = 0;
/* If a query is retried, use the log_id for the retry when logging the answer. */
forward->log_id = daemon->log_id;
if (option_bool(OPT_ADD_MAC))
plen = add_mac(header, plen, ((char *) header) + daemon->packet_buff_sz, &forward->source);
@@ -466,14 +465,12 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
#endif
}
if (sendto(fd, (char *)header, plen, 0,
&start->addr.sa,
sa_len(&start->addr)) == -1)
{
if (retry_send())
continue;
}
else
if (retry_send(sendto(fd, (char *)header, plen, 0,
&start->addr.sa,
sa_len(&start->addr))))
continue;
if (errno == 0)
{
/* Keep info in case we want to re-send this packet */
daemon->srv_save = start;
@@ -666,6 +663,7 @@ static size_t process_reply(struct dns_header *header, time_t now, struct server
header->ancount = htons(0);
header->nscount = htons(0);
header->arcount = htons(0);
header->hb3 &= ~HB3_TC;
}
/* the bogus-nxdomain stuff, doctor and NXDOMAIN->NODATA munging can all elide
@@ -725,11 +723,16 @@ void reply_query(int fd, int family, time_t now)
if (!(forward = lookup_frec(ntohs(header->id), hash)))
return;
/* log_query gets called indirectly all over the place, so
pass these in global variables - sorry. */
daemon->log_display_id = forward->log_id;
daemon->log_source_addr = &forward->source;
if (daemon->ignore_addr && RCODE(header) == NOERROR &&
check_for_ignored_address(header, n, daemon->ignore_addr))
return;
if ((RCODE(header) == SERVFAIL || RCODE(header) == REFUSED) &&
if (RCODE(header) == REFUSED &&
!option_bool(OPT_ORDER) &&
forward->forwardall == 0)
/* for broken servers, attempt to send to another one. */
@@ -924,7 +927,9 @@ void reply_query(int fd, int family, time_t now)
if (fd != -1)
{
while (sendto(fd, (char *)header, nn, 0, &server->addr.sa, sa_len(&server->addr)) == -1 && retry_send());
while (retry_send(sendto(fd, (char *)header, nn, 0,
&server->addr.sa,
sa_len(&server->addr))));
server->queries++;
}
@@ -987,7 +992,10 @@ void reply_query(int fd, int family, time_t now)
char *result;
if (forward->work_counter == 0)
result = "ABANDONED";
{
result = "ABANDONED";
status = STAT_BOGUS;
}
else
result = (status == STAT_SECURE ? "SECURE" : (status == STAT_INSECURE ? "INSECURE" : "BOGUS"));
@@ -1258,6 +1266,11 @@ void receive_query(struct listener *listen, time_t now)
dst_addr_4.s_addr = 0;
}
}
/* log_query gets called indirectly all over the place, so
pass these in global variables - sorry. */
daemon->log_display_id = ++daemon->log_id;
daemon->log_source_addr = &source_addr;
if (extract_request(header, (size_t)n, daemon->namebuff, &type))
{
@@ -1675,7 +1688,8 @@ unsigned char *tcp_request(int confd, time_t now,
struct in_addr dst_addr_4;
union mysockaddr peer_addr;
socklen_t peer_len = sizeof(union mysockaddr);
int query_count = 0;
if (getpeername(confd, (struct sockaddr *)&peer_addr, &peer_len) == -1)
return packet;
@@ -1712,7 +1726,8 @@ unsigned char *tcp_request(int confd, time_t now,
while (1)
{
if (!packet ||
if (query_count == TCP_MAX_QUERIES ||
!packet ||
!read_write(confd, &c1, 1, 1) || !read_write(confd, &c2, 1, 1) ||
!(size = c1 << 8 | c2) ||
!read_write(confd, payload, size, 1))
@@ -1721,6 +1736,13 @@ unsigned char *tcp_request(int confd, time_t now,
if (size < (int)sizeof(struct dns_header))
continue;
query_count++;
/* log_query gets called indirectly all over the place, so
pass these in global variables - sorry. */
daemon->log_display_id = ++daemon->log_id;
daemon->log_source_addr = &peer_addr;
check_subnet = 0;
/* save state of "cd" flag in query */
@@ -1920,7 +1942,10 @@ unsigned char *tcp_request(int confd, time_t now,
char *result;
if (keycount == 0)
result = "ABANDONED";
{
result = "ABANDONED";
status = STAT_BOGUS;
}
else
result = (status == STAT_SECURE ? "SECURE" : (status == STAT_INSECURE ? "INSECURE" : "BOGUS"));
@@ -2206,8 +2231,9 @@ void resend_query()
else
return;
while(sendto(fd, daemon->packet, daemon->packet_len, 0,
&daemon->srv_save->addr.sa, sa_len(&daemon->srv_save->addr)) == -1 && retry_send());
while(retry_send(sendto(fd, daemon->packet, daemon->packet_len, 0,
&daemon->srv_save->addr.sa,
sa_len(&daemon->srv_save->addr))));
}
}
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+135 -10
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -15,7 +15,7 @@
*/
#include "dnsmasq.h"
#ifdef HAVE_LINUX_NETWORK
#ifdef HAVE_INOTIFY
#include <sys/inotify.h>
@@ -40,8 +40,6 @@ void inotify_dnsmasq_init()
struct resolvc *res;
inotify_buffer = safe_malloc(INOTIFY_SZ);
daemon->inotifyfd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
if (daemon->inotifyfd == -1)
@@ -66,6 +64,7 @@ void inotify_dnsmasq_init()
{
*d = 0; /* make path just directory */
res->wd = inotify_add_watch(daemon->inotifyfd, path, IN_CLOSE_WRITE | IN_MOVED_TO);
res->file = d+1; /* pointer to filename */
*d = '/';
@@ -78,10 +77,84 @@ void inotify_dnsmasq_init()
}
}
int inotify_check(void)
/* initialisation for dynamic-dir. Set inotify watch for each directory, and read pre-existing files */
void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz)
{
struct hostsfile *ah;
for (ah = daemon->dynamic_dirs; ah; ah = ah->next)
{
DIR *dir_stream = NULL;
struct dirent *ent;
struct stat buf;
if (!(ah->flags & flag))
continue;
if (stat(ah->fname, &buf) == -1 || !(S_ISDIR(buf.st_mode)))
{
my_syslog(LOG_ERR, _("bad dynamic directory %s: %s"),
ah->fname, strerror(errno));
continue;
}
if (!(ah->flags & AH_WD_DONE))
{
ah->wd = inotify_add_watch(daemon->inotifyfd, ah->fname, IN_CLOSE_WRITE | IN_MOVED_TO);
ah->flags |= AH_WD_DONE;
}
/* Read contents of dir _after_ calling add_watch, in the hope of avoiding
a race which misses files being added as we start */
if (ah->wd == -1 || !(dir_stream = opendir(ah->fname)))
{
my_syslog(LOG_ERR, _("failed to create inotify for %s: %s"),
ah->fname, strerror(errno));
continue;
}
while ((ent = readdir(dir_stream)))
{
size_t lendir = strlen(ah->fname);
size_t lenfile = strlen(ent->d_name);
char *path;
/* ignore emacs backups and dotfiles */
if (lenfile == 0 ||
ent->d_name[lenfile - 1] == '~' ||
(ent->d_name[0] == '#' && ent->d_name[lenfile - 1] == '#') ||
ent->d_name[0] == '.')
continue;
if ((path = whine_malloc(lendir + lenfile + 2)))
{
strcpy(path, ah->fname);
strcat(path, "/");
strcat(path, ent->d_name);
/* ignore non-regular files */
if (stat(path, &buf) != -1 && S_ISREG(buf.st_mode))
{
if (ah->flags & AH_HOSTS)
total_size = read_hostsfile(path, ah->index, total_size, rhash, revhashsz);
#ifdef HAVE_DHCP
else if (ah->flags & (AH_DHCP_HST | AH_DHCP_OPT))
option_read_dynfile(path, ah->flags);
#endif
}
free(path);
}
}
}
}
int inotify_check(time_t now)
{
int hit = 0;
struct hostsfile *ah;
while (1)
{
int rc;
@@ -101,13 +174,65 @@ int inotify_check(void)
for (res = daemon->resolv_files; res; res = res->next)
if (res->wd == in->wd && in->len != 0 && strcmp(res->file, in->name) == 0)
hit = 1;
/* ignore emacs backups and dotfiles */
if (in->len == 0 ||
in->name[in->len - 1] == '~' ||
(in->name[0] == '#' && in->name[in->len - 1] == '#') ||
in->name[0] == '.')
continue;
for (ah = daemon->dynamic_dirs; ah; ah = ah->next)
if (ah->wd == in->wd)
{
size_t lendir = strlen(ah->fname);
char *path;
if ((path = whine_malloc(lendir + in->len + 2)))
{
strcpy(path, ah->fname);
strcat(path, "/");
strcat(path, in->name);
my_syslog(LOG_INFO, _("inotify, new or changed file %s"), path);
if (ah->flags & AH_HOSTS)
{
read_hostsfile(path, ah->index, 0, NULL, 0);
#ifdef HAVE_DHCP
if (daemon->dhcp || daemon->doing_dhcp6)
{
/* Propogate the consequences of loading a new dhcp-host */
dhcp_update_configs(daemon->dhcp_conf);
lease_update_from_configs();
lease_update_file(now);
lease_update_dns(1);
}
#endif
}
#ifdef HAVE_DHCP
else if (ah->flags & AH_DHCP_HST)
{
if (option_read_dynfile(path, AH_DHCP_HST))
{
/* Propogate the consequences of loading a new dhcp-host */
dhcp_update_configs(daemon->dhcp_conf);
lease_update_from_configs();
lease_update_file(now);
lease_update_dns(1);
}
}
else if (ah->flags & AH_DHCP_OPT)
option_read_dynfile(path, AH_DHCP_OPT);
#endif
free(path);
}
}
}
}
return hit;
}
#endif
#endif /* INOTIFY */
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+4 -4
View File
@@ -121,7 +121,6 @@ static int new_add_to_ipset(const char *setname, const struct all_addr *ipaddr,
struct my_nlattr *nested[2];
uint8_t proto;
int addrsz = INADDRSZ;
ssize_t rc;
#ifdef HAVE_IPV6
if (af == AF_INET6)
@@ -162,9 +161,10 @@ static int new_add_to_ipset(const char *setname, const struct all_addr *ipaddr,
nested[1]->nla_len = (void *)buffer + NL_ALIGN(nlh->nlmsg_len) - (void *)nested[1];
nested[0]->nla_len = (void *)buffer + NL_ALIGN(nlh->nlmsg_len) - (void *)nested[0];
while ((rc = sendto(ipset_sock, buffer, nlh->nlmsg_len, 0,
(struct sockaddr *)&snl, sizeof(snl))) == -1 && retry_send());
return rc;
while (retry_send(sendto(ipset_sock, buffer, nlh->nlmsg_len, 0,
(struct sockaddr *)&snl, sizeof(snl))));
return errno == 0 ? 0 : -1;
}
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+4 -3
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -45,8 +45,9 @@ void loop_send_probes()
fd = rfd->fd;
}
while (sendto(fd, daemon->packet, len, 0, &serv->addr.sa, sa_len(&serv->addr)) == -1 && retry_send());
while (retry_send(sendto(fd, daemon->packet, len, 0,
&serv->addr.sa, sa_len(&serv->addr))));
free_rfd(rfd);
}
}
+5 -5
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -169,10 +169,10 @@ int iface_enumerate(int family, void *parm, int (*callback)())
req.g.rtgen_family = family;
/* Don't block in recvfrom if send fails */
while((len = sendto(daemon->netlinkfd, (void *)&req, sizeof(req), 0,
(struct sockaddr *)&addr, sizeof(addr))) == -1 && retry_send());
if (len == -1)
while(retry_send(sendto(daemon->netlinkfd, (void *)&req, sizeof(req), 0,
(struct sockaddr *)&addr, sizeof(addr))));
if (errno != 0)
return 0;
while (1)
+3 -3
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -1459,7 +1459,7 @@ void check_servers(void)
}
}
if (!(serv->flags & SERV_NO_REBIND))
if (!(serv->flags & SERV_NO_REBIND) && !(serv->flags & SERV_LITERAL_ADDRESS))
{
if (serv->flags & (SERV_HAS_DOMAIN | SERV_FOR_NODOTS | SERV_USE_RESOLV))
{
@@ -1475,7 +1475,7 @@ void check_servers(void)
my_syslog(LOG_INFO, _("using local addresses only for %s %s"), s1, s2);
else if (serv->flags & SERV_USE_RESOLV)
my_syslog(LOG_INFO, _("using standard nameservers for %s %s"), s1, s2);
else if (!(serv->flags & SERV_LITERAL_ADDRESS))
else
my_syslog(LOG_INFO, _("using nameserver %s#%d for %s %s"), daemon->namebuff, port, s1, s2);
}
#ifdef HAVE_LOOP
+78 -11
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -148,6 +148,11 @@ struct myoption {
#define LOPT_DNSSEC_TIME 336
#define LOPT_LOOP_DETECT 337
#define LOPT_IGNORE_ADDR 338
#define LOPT_MINCTTL 339
#define LOPT_DHCP_INOTIFY 340
#define LOPT_DHOPT_INOTIFY 341
#define LOPT_HOST_INOTIFY 342
#define LOPT_DNSSEC_STAMP 343
#ifdef HAVE_GETOPT_LONG
static const struct option opts[] =
@@ -160,7 +165,7 @@ static const struct myoption opts[] =
{ "no-poll", 0, 0, 'n' },
{ "help", 0, 0, 'w' },
{ "no-daemon", 0, 0, 'd' },
{ "log-queries", 0, 0, 'q' },
{ "log-queries", 2, 0, 'q' },
{ "user", 2, 0, 'u' },
{ "group", 2, 0, 'g' },
{ "resolv-file", 2, 0, 'r' },
@@ -198,6 +203,7 @@ static const struct myoption opts[] =
{ "local-ttl", 1, 0, 'T' },
{ "no-negcache", 0, 0, 'N' },
{ "addn-hosts", 1, 0, 'H' },
{ "hostsdir", 1, 0, LOPT_HOST_INOTIFY },
{ "query-port", 1, 0, 'Q' },
{ "except-interface", 1, 0, 'I' },
{ "no-dhcp-interface", 1, 0, '2' },
@@ -246,6 +252,8 @@ static const struct myoption opts[] =
{ "interface-name", 1, 0, LOPT_INTNAME },
{ "dhcp-hostsfile", 1, 0, LOPT_DHCP_HOST },
{ "dhcp-optsfile", 1, 0, LOPT_DHCP_OPTS },
{ "dhcp-hostsdir", 1, 0, LOPT_DHCP_INOTIFY },
{ "dhcp-optsdir", 1, 0, LOPT_DHOPT_INOTIFY },
{ "dhcp-no-override", 0, 0, LOPT_OVERRIDE },
{ "tftp-port-range", 1, 0, LOPT_TFTPPORTS },
{ "stop-dns-rebind", 0, 0, LOPT_REBIND },
@@ -255,6 +263,7 @@ static const struct myoption opts[] =
{ "dhcp-broadcast", 2, 0, LOPT_BROADCAST },
{ "neg-ttl", 1, 0, LOPT_NEGTTL },
{ "max-ttl", 1, 0, LOPT_MAXTTL },
{ "min-cache-ttl", 1, 0, LOPT_MINCTTL },
{ "max-cache-ttl", 1, 0, LOPT_MAXCTTL },
{ "dhcp-alternate-port", 2, 0, LOPT_ALTPORT },
{ "dhcp-scriptuser", 1, 0, LOPT_SCRIPTUSR },
@@ -292,6 +301,7 @@ static const struct myoption opts[] =
{ "dnssec-debug", 0, 0, LOPT_DNSSEC_DEBUG },
{ "dnssec-check-unsigned", 0, 0, LOPT_DNSSEC_CHECK },
{ "dnssec-no-timecheck", 0, 0, LOPT_DNSSEC_TIME },
{ "dnssec-timestamp", 1, 0, LOPT_DNSSEC_STAMP },
#ifdef OPTION6_PREFIX_CLASS
{ "dhcp-prefix-class", 1, 0, LOPT_PREF_CLSS },
#endif
@@ -333,9 +343,12 @@ static struct {
{ 'G', ARG_DUP, "<hostspec>", gettext_noop("Set address or hostname for a specified machine."), NULL },
{ LOPT_DHCP_HOST, ARG_DUP, "<path>", gettext_noop("Read DHCP host specs from file."), NULL },
{ LOPT_DHCP_OPTS, ARG_DUP, "<path>", gettext_noop("Read DHCP option specs from file."), NULL },
{ LOPT_DHCP_INOTIFY, ARG_DUP, "<path>", gettext_noop("Read DHCP host specs from a directory."), NULL },
{ LOPT_DHOPT_INOTIFY, ARG_DUP, "<path>", gettext_noop("Read DHCP options from a directory."), NULL },
{ LOPT_TAG_IF, ARG_DUP, "tag-expression", gettext_noop("Evaluate conditional tag expression."), NULL },
{ 'h', OPT_NO_HOSTS, NULL, gettext_noop("Do NOT load %s file."), HOSTSFILE },
{ 'H', ARG_DUP, "<path>", gettext_noop("Specify a hosts file to be read in addition to %s."), HOSTSFILE },
{ LOPT_HOST_INOTIFY, ARG_DUP, "<path>", gettext_noop("Read hosts files from a directory."), NULL },
{ 'i', ARG_DUP, "<interface>", gettext_noop("Specify interface(s) to listen on."), NULL },
{ 'I', ARG_DUP, "<interface>", gettext_noop("Specify interface(s) NOT to listen on.") , NULL },
{ 'j', ARG_DUP, "set:<tag>,<class>", gettext_noop("Map DHCP user class to tag."), NULL },
@@ -357,7 +370,7 @@ static struct {
{ LOPT_FORCE, ARG_DUP, "<optspec>", gettext_noop("DHCP option sent even if the client does not request it."), NULL},
{ 'p', ARG_ONE, "<integer>", gettext_noop("Specify port to listen for DNS requests on (defaults to 53)."), NULL },
{ 'P', ARG_ONE, "<integer>", gettext_noop("Maximum supported UDP packet size for EDNS.0 (defaults to %s)."), "*" },
{ 'q', OPT_LOG, NULL, gettext_noop("Log DNS queries."), NULL },
{ 'q', ARG_DUP, NULL, gettext_noop("Log DNS queries."), NULL },
{ 'Q', ARG_ONE, "<integer>", gettext_noop("Force the originating port for upstream DNS queries."), NULL },
{ 'R', OPT_NO_RESOLV, NULL, gettext_noop("Do NOT read resolv.conf."), NULL },
{ 'r', ARG_DUP, "<path>", gettext_noop("Specify path to resolv.conf (defaults to %s)."), RESOLVFILE },
@@ -370,6 +383,8 @@ static struct {
{ 'T', ARG_ONE, "<integer>", gettext_noop("Specify time-to-live in seconds for replies from /etc/hosts."), NULL },
{ LOPT_NEGTTL, ARG_ONE, "<integer>", gettext_noop("Specify time-to-live in seconds for negative caching."), NULL },
{ LOPT_MAXTTL, ARG_ONE, "<integer>", gettext_noop("Specify time-to-live in seconds for maximum TTL to send to clients."), NULL },
{ LOPT_MAXCTTL, ARG_ONE, "<integer>", gettext_noop("Specify time-to-live ceiling for cache."), NULL },
{ LOPT_MINCTTL, ARG_ONE, "<integer>", gettext_noop("Specify time-to-live floor for cache."), NULL },
{ 'u', ARG_ONE, "<username>", gettext_noop("Change to this user after startup. (defaults to %s)."), CHUSER },
{ 'U', ARG_DUP, "set:<tag>,<class>", gettext_noop("Map DHCP vendor class to tag."), NULL },
{ 'v', 0, NULL, gettext_noop("Display dnsmasq version and copyright information."), NULL },
@@ -450,6 +465,7 @@ static struct {
{ LOPT_DNSSEC_DEBUG, OPT_DNSSEC_DEBUG, NULL, gettext_noop("Disable upstream checking for DNSSEC debugging."), NULL },
{ LOPT_DNSSEC_CHECK, OPT_DNSSEC_NO_SIGN, NULL, gettext_noop("Ensure answers without DNSSEC are in unsigned zones."), NULL },
{ LOPT_DNSSEC_TIME, OPT_DNSSEC_TIME, NULL, gettext_noop("Don't check DNSSEC signature timestamps until first cache-reload"), NULL },
{ LOPT_DNSSEC_STAMP, ARG_ONE, "<path>", gettext_noop("Timestamp file to verify system clock for DNSSEC"), NULL },
#ifdef OPTION6_PREFIX_CLASS
{ LOPT_PREF_CLSS, ARG_DUP, "set:tag,<class>", gettext_noop("Specify DHCPv6 prefix class"), NULL },
#endif
@@ -1705,9 +1721,12 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
break;
#endif /* HAVE_DHCP */
case LOPT_DHCP_HOST: /* --dhcp-hostfile */
case LOPT_DHCP_OPTS: /* --dhcp-optsfile */
case 'H': /* --addn-hosts */
case LOPT_DHCP_HOST: /* --dhcp-hostsfile */
case LOPT_DHCP_OPTS: /* --dhcp-optsfile */
case LOPT_DHCP_INOTIFY: /* --dhcp-hostsdir */
case LOPT_DHOPT_INOTIFY: /* --dhcp-optsdir */
case LOPT_HOST_INOTIFY: /* --hostsdir */
case 'H': /* --addn-hosts */
{
struct hostsfile *new = opt_malloc(sizeof(struct hostsfile));
static unsigned int hosts_index = SRC_AH;
@@ -1729,6 +1748,18 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
new->next = daemon->dhcp_opts_file;
daemon->dhcp_opts_file = new;
}
else
{
new->next = daemon->dynamic_dirs;
daemon->dynamic_dirs = new;
if (option == LOPT_DHCP_INOTIFY)
new->flags |= AH_DHCP_HST;
else if (option == LOPT_DHOPT_INOTIFY)
new->flags |= AH_DHCP_OPT;
else if (option == LOPT_HOST_INOTIFY)
new->flags |= AH_HOSTS;
}
break;
}
@@ -2253,8 +2284,6 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
{
if (!(newlist->flags & SERV_NO_REBIND))
newlist->flags |= SERV_NO_ADDR; /* no server */
if (newlist->flags & SERV_LITERAL_ADDRESS)
ret_err(gen_err);
}
else if (strcmp(arg, "#") == 0)
@@ -2421,6 +2450,12 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
ret_err(gen_err);
break;
case 'q': /* --log-queries */
set_option_bool(OPT_LOG);
if (arg && strcmp(arg, "extra") == 0)
set_option_bool(OPT_EXTRALOG);
break;
case LOPT_MAX_LOGS: /* --log-async */
daemon->max_logs = LOG_MAX; /* default */
if (arg && !atoi_check(arg, &daemon->max_logs))
@@ -2450,6 +2485,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
case 'T': /* --local-ttl */
case LOPT_NEGTTL: /* --neg-ttl */
case LOPT_MAXTTL: /* --max-ttl */
case LOPT_MINCTTL: /* --min-cache-ttl */
case LOPT_MAXCTTL: /* --max-cache-ttl */
case LOPT_AUTHTTL: /* --auth-ttl */
{
@@ -2460,6 +2496,12 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
daemon->neg_ttl = (unsigned long)ttl;
else if (option == LOPT_MAXTTL)
daemon->max_ttl = (unsigned long)ttl;
else if (option == LOPT_MINCTTL)
{
if (ttl > TTL_FLOOR_LIMIT)
ttl = TTL_FLOOR_LIMIT;
daemon->min_cache_ttl = (unsigned long)ttl;
}
else if (option == LOPT_MAXCTTL)
daemon->max_cache_ttl = (unsigned long)ttl;
else if (option == LOPT_AUTHTTL)
@@ -3826,6 +3868,10 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
}
#ifdef HAVE_DNSSEC
case LOPT_DNSSEC_STAMP:
daemon->timestamp_file = opt_string_alloc(arg);
break;
case LOPT_TRUST_ANCHOR:
{
struct ds_config *new = opt_malloc(sizeof(struct ds_config));
@@ -4024,6 +4070,20 @@ static void read_file(char *file, FILE *f, int hard_opt)
fclose(f);
}
#ifdef HAVE_DHCP
int option_read_dynfile(char *file, int flags)
{
my_syslog(MS_DHCP | LOG_INFO, _("read %s"), file);
if (flags & AH_DHCP_HST)
return one_file(file, LOPT_BANK);
else if (flags & AH_DHCP_OPT)
return one_file(file, LOPT_OPTS);
return 0;
}
#endif
static int one_file(char *file, int hard_opt)
{
FILE *f;
@@ -4121,7 +4181,7 @@ struct hostsfile *expand_filelist(struct hostsfile *list)
/* don't read this as a file */
ah->flags |= AH_INACTIVE;
if (!(dir_stream = opendir(ah->fname)))
my_syslog(LOG_ERR, _("cannot access directory %s: %s"),
ah->fname, strerror(errno));
@@ -4306,7 +4366,7 @@ void read_opts(int argc, char **argv, char *compile_opts)
{
char *buff = opt_malloc(MAXDNAME);
int option, conffile_opt = '7', testmode = 0;
char *arg, *conffile = CONFFILE;
char *arg, *conffile = NULL;
opterr = 0;
@@ -4421,7 +4481,14 @@ void read_opts(int argc, char **argv, char *compile_opts)
}
if (conffile)
one_file(conffile, conffile_opt);
{
one_file(conffile, conffile_opt);
free(conffile);
}
else
{
one_file(CONFFILE, conffile_opt);
}
/* port might not be known when the address is parsed - fill in here */
if (daemon->servers)
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+4 -3
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -479,8 +479,9 @@ static void send_ra(time_t now, int iface, char *iface_name, struct in6_addr *de
setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &iface, sizeof(iface));
}
while (sendto(daemon->icmp6fd, daemon->outpacket.iov_base, save_counter(0), 0,
(struct sockaddr *)&addr, sizeof(addr)) == -1 && retry_send());
while (retry_send(sendto(daemon->icmp6fd, daemon->outpacket.iov_base,
save_counter(0), 0, (struct sockaddr *)&addr,
sizeof(addr))));
}
+4 -4
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -128,8 +128,8 @@ int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
if (isExtract)
{
unsigned char c = *p;
if (isascii(c) && !iscntrl(c) && c != '.')
*cp++ = *p;
if (c != 0 && c != '.')
*cp++ = c;
else
return 0;
}
@@ -1643,7 +1643,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
{
if (crecp->flags & F_NXDOMAIN)
nxdomain = 1;
log_query(F_UPSTREAM, name, NULL, "secure no DS");
log_query(F_UPSTREAM, name, NULL, "no DS");
}
else if ((keydata = blockdata_retrieve(crecp->addr.ds.keydata, crecp->addr.ds.keylen, NULL)))
{
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+14 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -824,6 +824,19 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
}
else
{
/* Windows 8 always requests an address even if the Managed bit
in RA is 0 and it keeps retrying if it receives a reply
stating that no addresses are available. We solve this
by not replying at all if we're not configured to give any
addresses by DHCPv6. RFC 3315 17.2.1. appears to allow this. */
for (c = state->context; c; c = c->current)
if (!(c->flags & CONTEXT_RA_STATELESS))
break;
if (!c)
return 0;
/* no address, return error */
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOADDRS);
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+1 -1
View File
@@ -21,7 +21,7 @@
#if defined(HAVE_IPSET) && defined(HAVE_BSD_NETWORK)
#ifndef __FreeBSD__
#include <bsd/string.h>
#include <string.h>
#endif
#include <sys/types.h>
+1 -1
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
+37 -27
View File
@@ -1,4 +1,4 @@
/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
/* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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
@@ -274,6 +274,7 @@ int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2)
#ifdef HAVE_IPV6
if (s1->sa.sa_family == AF_INET6 &&
s1->in6.sin6_port == s2->in6.sin6_port &&
s1->in6.sin6_scope_id == s2->in6.sin6_scope_id &&
IN6_ARE_ADDR_EQUAL(&s1->in6.sin6_addr, &s2->in6.sin6_addr))
return 1;
#endif
@@ -568,17 +569,27 @@ void bump_maxfd(int fd, int *max)
*max = fd;
}
int retry_send(void)
/* rc is return from sendto and friends.
Return 1 if we should retry.
Set errno to zero if we succeeded. */
int retry_send(ssize_t rc)
{
static int retries = 0;
struct timespec waiter;
if (rc != -1)
{
retries = 0;
errno = 0;
return 0;
}
/* Linux kernels can return EAGAIN in perpetuity when calling
sendmsg() and the relevant interface has gone. Here we loop
retrying in EAGAIN for 1 second max, to avoid this hanging
dnsmasq. */
static int retries = 0;
struct timespec waiter;
if (errno == EAGAIN || errno == EWOULDBLOCK)
if (errno == EAGAIN || errno == EWOULDBLOCK)
{
waiter.tv_sec = 0;
waiter.tv_nsec = 10000;
@@ -586,13 +597,13 @@ int retry_send(void)
if (retries++ < 1000)
return 1;
}
retries = 0;
if (errno == EINTR)
return 1;
return 0;
retries = 0;
if (errno == EINTR)
return 1;
return 0;
}
int read_write(int fd, unsigned char *packet, int size, int rw)
@@ -601,22 +612,21 @@ int read_write(int fd, unsigned char *packet, int size, int rw)
for (done = 0; done < size; done += n)
{
retry:
if (rw)
n = read(fd, &packet[done], (size_t)(size - done));
else
n = write(fd, &packet[done], (size_t)(size - done));
do {
if (rw)
n = read(fd, &packet[done], (size_t)(size - done));
else
n = write(fd, &packet[done], (size_t)(size - done));
if (n == 0)
return 0;
} while (retry_send(n) || errno == ENOMEM || errno == ENOBUFS);
if (n == 0)
return 0;
else if (n == -1)
{
if (retry_send() || errno == ENOMEM || errno == ENOBUFS)
goto retry;
else
return 0;
}
if (errno != 0)
return 0;
}
return 1;
}