mirror of https://github.com/hak5/openwrt.git
dnsmasq: bump to dnsmasq v2.77test3
New test release (since test1) includes 2 LEDE patches that are upstream and may be dropped, along with many spelling fixes. Add forthcoming 2017 root zone trust anchor to trust-anchors.conf. Backport 2 patches that just missed test3: Reduce logspam of those domains handled locally 'local addresses only' Implement RFC-6842 (Client-ids in DHCP replies) Compile & run tested Archer C7 v2 Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>openwrt-18.06
Kevin Darbyshire-Bryant
Hans Dedecker
parent
3ee793f601
commit
0247314f7d
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@ -8,12 +8,12 @@
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include $(TOPDIR)/rules.mk
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PKG_NAME:=dnsmasq
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PKG_VERSION:=2.77test1
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PKG_VERSION:=2.77test3
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PKG_RELEASE:=1
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
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PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/test-releases
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PKG_HASH:=be89f1ab7b5b85dc31a982e73f9e9b8a65da6b9dfbdef30eede5284a8f832105
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PKG_HASH:=a5cd2b78048c0b16a9cbd2486430039c7d91b958c395edf3233cd9ae1a9eb8c1
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PKG_LICENSE:=GPL-2.0
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PKG_LICENSE_FILES:=COPYING
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@ -1,99 +0,0 @@
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From d42d4706bbcce3b5a40ad778a5a356a997db6b34 Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Thu, 2 Feb 2017 16:52:06 +0000
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Subject: [PATCH] Make --localise-queries apply to names from
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--interface-name.
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---
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CHANGELOG | 7 +++++++
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man/dnsmasq.8 | 9 +++++----
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src/rfc1035.c | 21 ++++++++++++++++++++-
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3 files changed, 32 insertions(+), 5 deletions(-)
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -58,6 +58,13 @@ version 2.77
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this is Nominum's. Thanks to Dave Täht for spotting the
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bug and assisting in the fix.
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+ Fix the manpage which lied that only the primary address
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+ of an interface is used by --interface-name.
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+
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+ Make --localise-queries apply to names from --interface-name.
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+ Thanks to Kevin Darbyshire-Bryant and Eric Luehrsen
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+ for pushing this.
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+
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version 2.76
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Include 0.0.0.0/8 in DNS rebind checks. This range
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--- a/man/dnsmasq.8
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+++ b/man/dnsmasq.8
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@@ -289,8 +289,8 @@ option requires non-standard networking
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under Linux. On other platforms it falls-back to --bind-interfaces mode.
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.TP
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.B \-y, --localise-queries
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-Return answers to DNS queries from /etc/hosts which depend on the interface over which the query was
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-received. If a name in /etc/hosts has more than one address associated with
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+Return answers to DNS queries from /etc/hosts and --interface-name which depend on the interface over which the query was
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+received. If a name has more than one address associated with
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it, and at least one of those addresses is on the same subnet as the
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interface to which the query was sent, then return only the
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address(es) on that subnet. This allows for a server to have multiple
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@@ -604,7 +604,7 @@ given by the hex data, which may be of t
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012345 or any mixture of these.
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.TP
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.B --interface-name=<name>,<interface>[/4|/6]
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-Return a DNS record associating the name with the primary address on
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+Return DNS records associating the name with the address(es) of
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the given interface. This flag specifies an A or AAAA record for the given
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name in the same way as an /etc/hosts line, except that the address is
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not constant, but taken from the given interface. The interface may be
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@@ -614,7 +614,8 @@ down, not configured or non-existent, an
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matching PTR record is also created, mapping the interface address to
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the name. More than one name may be associated with an interface
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address by repeating the flag; in that case the first instance is used
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-for the reverse address-to-name mapping.
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+for the reverse address-to-name mapping. Note that a name used in
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+--interface-name may not appear in /etc/hosts.
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.TP
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.B --synth-domain=<domain>,<address range>[,<prefix>]
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Create artificial A/AAAA and PTR records for an address range. The
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--- a/src/rfc1035.c
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+++ b/src/rfc1035.c
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@@ -1516,9 +1516,24 @@ size_t answer_request(struct dns_header
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if (intr)
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{
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struct addrlist *addrlist;
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- int gotit = 0;
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+ int gotit = 0, localise = 0;
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enumerate_interfaces(0);
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+
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+ /* See if a putative address is on the network from which we recieved
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+ the query, is so we'll filter other answers. */
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+ if (local_addr.s_addr != 0 && option_bool(OPT_LOCALISE) && type == T_A)
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+ for (intr = daemon->int_names; intr; intr = intr->next)
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+ if (hostname_isequal(name, intr->name))
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+ for (addrlist = intr->addr; addrlist; addrlist = addrlist->next)
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+#ifdef HAVE_IPV6
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+ if (!(addrlist->flags & ADDRLIST_IPV6))
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+#endif
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+ if (is_same_net(*((struct in_addr *)&addrlist->addr), local_addr, local_netmask))
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+ {
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+ localise = 1;
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+ break;
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+ }
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for (intr = daemon->int_names; intr; intr = intr->next)
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if (hostname_isequal(name, intr->name))
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@@ -1528,6 +1543,10 @@ size_t answer_request(struct dns_header
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if (((addrlist->flags & ADDRLIST_IPV6) ? T_AAAA : T_A) == type)
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#endif
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{
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+ if (localise &&
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+ !is_same_net(*((struct in_addr *)&addrlist->addr), local_addr, local_netmask))
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+ continue;
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+
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#ifdef HAVE_IPV6
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if (addrlist->flags & ADDRLIST_REVONLY)
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continue;
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@ -0,0 +1,83 @@
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From 3e2496fb16fb78cb95fffdac80f967310a34b1fa Mon Sep 17 00:00:00 2001
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From: Hannu Nyman <hannu.nyman@iki.fi>
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Date: Sat, 11 Feb 2017 13:44:08 +0000
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Subject: [PATCH] Decrease the number of individual sites listed in log.
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By default 30 first servers are listed individually to system log, and
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then a count of the remaining items. With e.g. a NXDOMAIN based adblock
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service, dnsmasq lists 30 unnecessary ad sites every time when dnsmasq
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evaluates the list. But the actual nameservers in use are evaluated last
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and are not displayed as they get included in the "remaining items" total.
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Handle the "local addresses only" separately and list only a few of them.
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Remove the "local addresses only" from the general count.
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---
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CHANGELOG | 4 ++++
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src/config.h | 1 +
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src/network.c | 9 ++++++++-
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3 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/CHANGELOG b/CHANGELOG
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index 788aaf9..f7f5125 100644
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -69,6 +69,10 @@ version 2.77
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servers. Specifically, be prepared to open a new TCP
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connection when we want to make multiple queries
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but the upstream server accepts fewer queries per connection.
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+
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+ Improve logging of upstream servers when there are a lot
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+ of "local addresses only" entries. Thanks to Hannu Nyman for
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+ the patch.
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version 2.76
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diff --git a/src/config.h b/src/config.h
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index be9cf05..cf527b3 100644
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--- a/src/config.h
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+++ b/src/config.h
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@@ -27,6 +27,7 @@
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#define FORWARD_TEST 50 /* try all servers every 50 queries */
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#define FORWARD_TIME 20 /* or 20 seconds */
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#define SERVERS_LOGGED 30 /* Only log this many servers when logging state */
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+#define LOCALS_LOGGED 8 /* Only log this many local addresses when logging state */
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#define RANDOM_SOCKS 64 /* max simultaneous random ports */
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#define LEASE_RETRY 60 /* on error, retry writing leasefile after LEASE_RETRY seconds */
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#define CACHESIZ 150 /* default cache size */
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diff --git a/src/network.c b/src/network.c
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index 770558a..eb41624 100644
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--- a/src/network.c
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+++ b/src/network.c
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@@ -1438,6 +1438,7 @@ void check_servers(void)
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struct server *serv;
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struct serverfd *sfd, *tmp, **up;
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int port = 0, count;
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+ int locals = 0;
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/* interface may be new since startup */
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if (!option_bool(OPT_NOWILD))
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@@ -1541,7 +1542,11 @@ void check_servers(void)
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s1 = _("domain"), s2 = serv->domain;
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if (serv->flags & SERV_NO_ADDR)
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- my_syslog(LOG_INFO, _("using local addresses only for %s %s"), s1, s2);
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+ {
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+ count--;
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+ if (++locals <= LOCALS_LOGGED)
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+ my_syslog(LOG_INFO, _("using local addresses only for %s %s"), s1, s2);
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+ }
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else if (serv->flags & SERV_USE_RESOLV)
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my_syslog(LOG_INFO, _("using standard nameservers for %s %s"), s1, s2);
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else
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@@ -1558,6 +1563,8 @@ void check_servers(void)
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}
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}
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+ if (locals > LOCALS_LOGGED)
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+ my_syslog(LOG_INFO, _("using %d more local addresses"), locals - LOCALS_LOGGED);
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if (count - 1 > SERVERS_LOGGED)
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my_syslog(LOG_INFO, _("using %d more nameservers"), count - SERVERS_LOGGED - 1);
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--
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1.7.10.4
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@ -0,0 +1,132 @@
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From 88a77a78ad27adc3ed87b7ee603643d26cb896ee Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Sat, 11 Feb 2017 17:02:02 +0000
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Subject: [PATCH] Implement RFC-6842 (Client-ids in DHCP replies.)
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---
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CHANGELOG | 5 ++++-
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src/rfc2131.c | 33 ++++++++++++++++++++++-----------
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2 files changed, 26 insertions(+), 12 deletions(-)
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diff --git a/CHANGELOG b/CHANGELOG
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index f7f5125..a4ee280 100644
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--- a/CHANGELOG
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+++ b/CHANGELOG
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@@ -74,7 +74,10 @@ version 2.77
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of "local addresses only" entries. Thanks to Hannu Nyman for
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the patch.
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-
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+ Implement RFC 6842. Thanks to Reddeiah Raju Konduru for
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+ pointing out that this was missing.
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+
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+
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version 2.76
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Include 0.0.0.0/8 in DNS rebind checks. This range
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translates to hosts on the local network, or, at
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diff --git a/src/rfc2131.c b/src/rfc2131.c
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index 978c8dc..3e97402 100644
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--- a/src/rfc2131.c
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+++ b/src/rfc2131.c
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@@ -38,7 +38,7 @@ static void log_packet(char *type, void *addr, unsigned char *ext_mac,
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static unsigned char *option_find(struct dhcp_packet *mess, size_t size, int opt_type, int minsize);
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static unsigned char *option_find1(unsigned char *p, unsigned char *end, int opt, int minsize);
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static size_t dhcp_packet_size(struct dhcp_packet *mess, unsigned char *agent_id, unsigned char *real_end);
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-static void clear_packet(struct dhcp_packet *mess, unsigned char *end);
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+static void clear_packet(struct dhcp_packet *mess, unsigned char *end, unsigned int sz);
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static int in_list(unsigned char *list, int opt);
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static void do_options(struct dhcp_context *context,
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struct dhcp_packet *mess,
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@@ -611,7 +611,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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now);
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lease_set_interface(lease, int_index, now);
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- clear_packet(mess, end);
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+ clear_packet(mess, end, 0);
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do_options(context, mess, end, NULL, hostname, get_domain(mess->yiaddr),
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netid, subnet_addr, 0, 0, -1, NULL, vendor_class_len, now, 0xffffffff, 0);
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}
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@@ -814,7 +814,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (!service || !service->basename || !context)
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return 0;
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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mess->yiaddr = mess->ciaddr;
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mess->ciaddr.s_addr = 0;
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@@ -882,7 +882,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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mess->flags |= htons(0x8000); /* broadcast */
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}
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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/* Redirect EFI clients to port 4011 */
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if (pxearch >= 6)
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@@ -1062,7 +1062,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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log_packet("DHCPOFFER" , &mess->yiaddr, emac, emac_len, iface_name, NULL, NULL, mess->xid);
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time = calc_time(context, config, option_find(mess, sz, OPTION_LEASE_TIME, 4));
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPOFFER);
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option_put(mess, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(server_id(context, override, fallback).s_addr));
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option_put(mess, end, OPTION_LEASE_TIME, 4, time);
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@@ -1245,7 +1245,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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log_packet("DHCPNAK", &mess->yiaddr, emac, emac_len, iface_name, NULL, message, mess->xid);
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mess->yiaddr.s_addr = 0;
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPNAK);
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option_put(mess, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(server_id(context, override, fallback).s_addr));
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option_put_string(mess, end, OPTION_MESSAGE, message, borken_opt);
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@@ -1401,7 +1401,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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log_packet("DHCPACK", &mess->yiaddr, emac, emac_len, iface_name, hostname, NULL, mess->xid);
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);
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option_put(mess, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(server_id(context, override, fallback).s_addr));
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option_put(mess, end, OPTION_LEASE_TIME, 4, time);
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@@ -1452,7 +1452,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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override = lease->override;
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}
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- clear_packet(mess, end);
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+ clear_packet(mess, end, sz);
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option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);
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option_put(mess, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(server_id(context, override, fallback).s_addr));
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@@ -2180,12 +2180,23 @@ static struct dhcp_opt *pxe_opts(int pxe_arch, struct dhcp_netid *netid, struct
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return ret;
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}
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-
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-static void clear_packet(struct dhcp_packet *mess, unsigned char *end)
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+
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+static void clear_packet(struct dhcp_packet *mess, unsigned char *end, unsigned int sz)
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{
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+ unsigned char *opt;
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+ unsigned int clid_tot = 0;
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+
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+ /* If sz is non-zero, save any client-id option by copying it as the first
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+ option in the new packet */
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+ if (sz != 0 && (opt = option_find(mess, sz, OPTION_CLIENT_ID, 1)))
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+ {
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+ clid_tot = option_len(opt) + 2u;
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+ memmove(&mess->options[0] + sizeof(u32), opt, clid_tot);
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+ }
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+
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memset(mess->sname, 0, sizeof(mess->sname));
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memset(mess->file, 0, sizeof(mess->file));
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- memset(&mess->options[0] + sizeof(u32), 0, end - (&mess->options[0] + sizeof(u32)));
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+ memset(&mess->options[0] + sizeof(u32) + clid_tot, 0, end - (&mess->options[0] + sizeof(u32) + clid_tot));
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mess->siaddr.s_addr = 0;
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}
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--
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1.7.10.4
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@ -1,30 +0,0 @@
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From 94a8815892f538b334d640012eebcafc2c7fa284 Mon Sep 17 00:00:00 2001
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From: Martin Wetterwald <martin.wetterwald@corp.ovh.com>
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Date: Thu, 27 Oct 2016 12:17:03 +0200
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Subject: [PATCH] Consider SERVFAIL as a non-successful response
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Treat Servfail as a recoverable error instead of a hard error.
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A misconfigured dns forwarder upstream can return a Servfail faster than
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a correctly configured one.
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In the case of a dnssec misbehaving, it will misbehave on all correctly
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configured upstreams. In the case of a normal DNS query, the original
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behavior of dnsmasq here was more robust.
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---
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src/forward.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/src/forward.c
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+++ b/src/forward.c
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@@ -853,7 +853,8 @@ void reply_query(int fd, int family, tim
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we get a good reply from another server. Kill it when we've
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had replies from all to avoid filling the forwarding table when
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everything is broken */
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- if (forward->forwardall == 0 || --forward->forwardall == 1 || RCODE(header) != REFUSED)
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+ if (forward->forwardall == 0 || --forward->forwardall == 1
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+ || (RCODE(header) != REFUSED && RCODE(header) != SERVFAIL))
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{
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int check_rebind = 0, no_cache_dnssec = 0, cache_secure = 0, bogusanswer = 0;
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