Update to 2.81 (#1823139)
This commit is contained in:
Petr Menšík
parent
8cb7aff90a
commit
e8e451a80c
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@ -30,3 +30,5 @@ dnsmasq-2.52.tar.lzma
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/dnsmasq-2.80.tar.xz
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/dnsmasq-2.81rc3.tar.xz
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/dnsmasq-2.81rc3.tar.xz.asc
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/dnsmasq-2.81.tar.xz
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/dnsmasq-2.81.tar.xz.asc
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@ -1,91 +0,0 @@
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From bb7adef44c20e4271b0b8a6e55dac4e986c02fef Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Fri, 12 Apr 2019 15:29:00 +0200
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Subject: [PATCH] Restore ability to answer non-recursive requests
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Instead, check only local configured entries are answered without
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rdbit set. All cached replies are still denied, but locally configured
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names are available with both recursion and without it.
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Fixes commit 4139298d287eb5c57f4aa53c459cb02fc5be2495 unintended
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behaviour.
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(cherry-picked from 29ae3083981ea82f535f77ea54bbd538f1224a9e)
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---
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src/rfc1035.c | 23 ++++++++++++++---------
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1 file changed, 14 insertions(+), 9 deletions(-)
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diff --git a/src/rfc1035.c b/src/rfc1035.c
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index a943ecb..74befef 100644
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--- a/src/rfc1035.c
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+++ b/src/rfc1035.c
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@@ -1273,7 +1273,11 @@ static unsigned long crec_ttl(struct crec *crecp, time_t now)
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else
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return daemon->max_ttl;
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}
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-
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+
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+static int cache_validated(const struct crec *crecp)
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+{
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+ return (option_bool(OPT_DNSSEC_VALID) && !(crecp->flags & F_DNSSECOK));
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+}
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/* return zero if we can't answer from cache, or packet size if we can */
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size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
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@@ -1292,17 +1296,20 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
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int nxdomain = 0, auth = 1, trunc = 0, sec_data = 1;
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struct mx_srv_record *rec;
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size_t len;
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+ int rd_bit;
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+
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// Make sure we do not underflow here too.
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if (qlen > (limit - ((char *)header))) return 0;
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/* never answer queries with RD unset, to avoid cache snooping. */
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- if (!(header->hb3 & HB3_RD) ||
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- ntohs(header->ancount) != 0 ||
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+ if (ntohs(header->ancount) != 0 ||
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ntohs(header->nscount) != 0 ||
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ntohs(header->qdcount) == 0 ||
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OPCODE(header) != QUERY )
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return 0;
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+ rd_bit = (header->hb3 & HB3_RD);
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+
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/* Don't return AD set if checking disabled. */
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if (header->hb4 & HB4_CD)
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sec_data = 0;
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@@ -1467,9 +1474,8 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
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/* Don't use cache when DNSSEC data required, unless we know that
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the zone is unsigned, which implies that we're doing
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validation. */
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- if ((crecp->flags & (F_HOSTS | F_DHCP | F_CONFIG)) ||
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- !do_bit ||
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- (option_bool(OPT_DNSSEC_VALID) && !(crecp->flags & F_DNSSECOK)))
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+ if ((crecp->flags & (F_HOSTS | F_DHCP | F_CONFIG)) ||
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+ (rd_bit && (!do_bit || cache_validated(crecp)) ))
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{
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do
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{
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@@ -1666,8 +1672,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
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/* If the client asked for DNSSEC don't use cached data. */
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if ((crecp->flags & (F_HOSTS | F_DHCP | F_CONFIG)) ||
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- !do_bit ||
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- (option_bool(OPT_DNSSEC_VALID) && !(crecp->flags & F_DNSSECOK)))
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+ (rd_bit && (!do_bit || cache_validated(crecp)) ))
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do
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{
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/* don't answer wildcard queries with data not from /etc/hosts
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@@ -1751,7 +1756,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
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{
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if ((crecp = cache_find_by_name(NULL, name, now, F_CNAME | (dryrun ? F_NO_RR : 0))) &&
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(qtype == T_CNAME || (crecp->flags & F_CONFIG)) &&
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- ((crecp->flags & F_CONFIG) || !do_bit || (option_bool(OPT_DNSSEC_VALID) && !(crecp->flags & F_DNSSECOK))))
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+ ((crecp->flags & F_CONFIG) || (rd_bit && (!do_bit || (option_bool(OPT_DNSSEC_VALID) && !(crecp->flags & F_DNSSECOK))))))
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{
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if (!(crecp->flags & F_DNSSECOK))
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sec_data = 0;
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--
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2.21.1
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11
dnsmasq.spec
11
dnsmasq.spec
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@ -1,5 +1,5 @@
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%define testrelease 0
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%define releasecandidate 3
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%define releasecandidate 0
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%if 0%{testrelease}
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%define extrapath test-releases/
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%define extraversion test%{testrelease}
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@ -13,7 +13,7 @@
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Name: dnsmasq
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Version: 2.81
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Release: 1%{?extraversion:.%{extraversion}}%{?dist}
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Release: 2%{?extraversion:.%{extraversion}}%{?dist}
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Summary: A lightweight DHCP/caching DNS server
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License: GPLv2 or GPLv3
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@ -35,9 +35,6 @@ Patch3: dnsmasq-2.78-fips.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=1728701
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Patch7: dnsmasq-2.80-rh1728701.patch
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Patch9: dnsmasq-2.80-SIOCGSTAMP.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=1647464
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# http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=29ae3083981ea82f535f77ea54bbd538f1224a9e
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Patch15: dnsmasq-2.81-restore-ability-to-answer-non-recursive-requests.patch
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# This is workaround to nettle bug #1549190
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# https://bugzilla.redhat.com/show_bug.cgi?id=1549190
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@ -174,8 +171,12 @@ install -Dpm 644 %{SOURCE2} %{buildroot}%{_sysusersdir}/%{name}.conf
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%{_mandir}/man1/dhcp_*
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%changelog
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* Thu Apr 16 2020 Petr Menšík <pemensik@redhat.com> - 2.81-2
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- Update to 2.81 (#1823139)
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* Mon Mar 23 2020 Petr Menšík <pemensik@redhat.com> - 2.81-1.rc3
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- Update to 2.81rc3
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* Mon Mar 23 2020 Petr Menšík <pemensik@redhat.com> - 2.80-14
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- Fix last build breakage of DNS (#1814468)
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4
sources
4
sources
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@ -1,2 +1,2 @@
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SHA512 (dnsmasq-2.81rc3.tar.xz) = 2bac2e01550c58f86c5f4be772eaeea59cc0c88531d425797efeedf146991d8d9ed0fe53977e6e6263b63f7441aafd90ccc3e64057e9a0959d7af15850bb05f1
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SHA512 (dnsmasq-2.81rc3.tar.xz.asc) = 9835b94f919d8750b667dc92584b5634e5dbd5e672f3337946d4ed5541a26358cbabf04dff4ae6f5ba380d4170889252587dbc704b9b40f56c86440e8b157264
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SHA512 (dnsmasq-2.81.tar.xz) = 85550c9782fef9b0710d0e233523ed1fe26e877a8bc53fcea3f7cf1fb17c3a79c46f284a99dab2bdaf6a107ea3f1a71cec476ab6d4e1b936da6591aaef42c88e
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SHA512 (dnsmasq-2.81.tar.xz.asc) = 8f102efb3f9ccf5509db60e81ef9fe2515cd4813dafdc7bb24a8f3246a3ededd62ca37171abbba3ef5b547313d344778d922ab8fd91bacd6351f4ab73ced74ef
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