dnsmasq: bump to 2.73rc4
Fix crash caused by malformed DNS requests Improved DNSSEC handling Signed-off-by: Steven Barth <steven@midlink.org> SVN-Revision: 45354
This commit is contained in:
Steven Barth
parent
9d6e04a4f1
commit
747c33859b
7 changed files with 49 additions and 351 deletions
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@ -8,12 +8,12 @@
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include $(TOPDIR)/rules.mk
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include $(TOPDIR)/rules.mk
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PKG_NAME:=dnsmasq
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PKG_NAME:=dnsmasq
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PKG_VERSION:=2.72
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PKG_VERSION:=2.73rc4
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PKG_RELEASE:=4
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PKG_RELEASE:=1
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
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PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq
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PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/release-candidates
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PKG_MD5SUM:=cf82f81cf09ad3d47612985012240483
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PKG_MD5SUM:=24569c7605059aee175b1776201afa93
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PKG_LICENSE:=GPL-2.0
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PKG_LICENSE:=GPL-2.0
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PKG_LICENSE_FILES:=COPYING
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PKG_LICENSE_FILES:=COPYING
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@ -205,6 +205,7 @@ dnsmasq() {
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[ "$dnssec" -gt 0 ] && {
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[ "$dnssec" -gt 0 ] && {
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xappend "--conf-file=$TRUSTANCHORSFILE"
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xappend "--conf-file=$TRUSTANCHORSFILE"
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xappend "--dnssec"
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xappend "--dnssec"
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xappend "--dnssec-timestamp=/etc/dnsmasq.time"
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append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
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append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
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}
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}
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@ -555,7 +556,7 @@ start_service() {
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procd_add_jail dnsmasq ubus log
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procd_add_jail dnsmasq ubus log
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procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /dev/urandom /etc/dnsmasq.conf /tmp/dnsmasq.d /tmp/resolv.conf.auto /etc/hosts /etc/ethers
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procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /dev/urandom /etc/dnsmasq.conf /tmp/dnsmasq.d /tmp/resolv.conf.auto /etc/hosts /etc/ethers
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procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases
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procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases /etc/dnsmasq.time
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procd_close_instance
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procd_close_instance
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@ -565,6 +566,10 @@ start_service() {
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mkdir -p /var/lib/misc
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mkdir -p /var/lib/misc
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touch /tmp/dhcp.leases
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touch /tmp/dhcp.leases
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if [ ! -f /etc/dnsmasq.time ]; then
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touch -t 197001010000 /etc/dnsmasq.time
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chmod 0777 /etc/dnsmasq.time
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fi
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echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
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echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
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echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
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echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
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@ -1,83 +0,0 @@
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From 094b5c3d904bae9aeb3206d9f3b8348926b84975 Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Sun, 21 Dec 2014 16:11:52 +0000
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Subject: [PATCH] Fix crash in DNSSEC code when attempting to verify large RRs.
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---
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src/dnssec.c | 27 +++++++++++++++++++--------
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diff --git a/src/dnssec.c b/src/dnssec.c
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index 69bfc29..3208ac7 100644
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--- a/src/dnssec.c
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+++ b/src/dnssec.c
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@@ -456,16 +456,27 @@ static u16 *get_desc(int type)
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/* Return bytes of canonicalised rdata, when the return value is zero, the remaining
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data, pointed to by *p, should be used raw. */
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-static int get_rdata(struct dns_header *header, size_t plen, unsigned char *end, char *buff,
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+static int get_rdata(struct dns_header *header, size_t plen, unsigned char *end, char *buff, int bufflen,
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unsigned char **p, u16 **desc)
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{
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int d = **desc;
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- (*desc)++;
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-
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/* No more data needs mangling */
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if (d == (u16)-1)
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- return 0;
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+ {
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+ /* If there's more data than we have space for, just return what fits,
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+ we'll get called again for more chunks */
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+ if (end - *p > bufflen)
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+ {
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+ memcpy(buff, *p, bufflen);
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+ *p += bufflen;
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+ return bufflen;
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+ }
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+
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+ return 0;
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+ }
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+
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+ (*desc)++;
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if (d == 0 && extract_name(header, plen, p, buff, 1, 0))
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/* domain-name, canonicalise */
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@@ -560,7 +571,7 @@ static void sort_rrset(struct dns_header *header, size_t plen, u16 *rr_desc, int
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if (left1 != 0)
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memmove(buff1, buff1 + len1 - left1, left1);
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- if ((len1 = get_rdata(header, plen, end1, buff1 + left1, &p1, &dp1)) == 0)
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+ if ((len1 = get_rdata(header, plen, end1, buff1 + left1, MAXDNAME - left1, &p1, &dp1)) == 0)
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{
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quit = 1;
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len1 = end1 - p1;
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@@ -571,7 +582,7 @@ static void sort_rrset(struct dns_header *header, size_t plen, u16 *rr_desc, int
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if (left2 != 0)
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memmove(buff2, buff2 + len2 - left2, left2);
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- if ((len2 = get_rdata(header, plen, end2, buff2 + left2, &p2, &dp2)) == 0)
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+ if ((len2 = get_rdata(header, plen, end2, buff2 + left2, MAXDNAME - left2, &p2, &dp2)) == 0)
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{
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quit = 1;
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len2 = end2 - p2;
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@@ -808,7 +819,7 @@ static int validate_rrset(time_t now, struct dns_header *header, size_t plen, in
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/* canonicalise rdata and calculate length of same, use name buffer as workspace */
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cp = p;
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dp = rr_desc;
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- for (len = 0; (seg = get_rdata(header, plen, end, name, &cp, &dp)) != 0; len += seg);
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+ for (len = 0; (seg = get_rdata(header, plen, end, name, MAXDNAME, &cp, &dp)) != 0; len += seg);
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len += end - cp;
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len = htons(len);
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hash->update(ctx, 2, (unsigned char *)&len);
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@@ -816,7 +827,7 @@ static int validate_rrset(time_t now, struct dns_header *header, size_t plen, in
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/* Now canonicalise again and digest. */
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cp = p;
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dp = rr_desc;
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- while ((seg = get_rdata(header, plen, end, name, &cp, &dp)))
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+ while ((seg = get_rdata(header, plen, end, name, MAXDNAME, &cp, &dp)))
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hash->update(ctx, seg, (unsigned char *)name);
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if (cp != end)
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hash->update(ctx, end - cp, cp);
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--
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2.1.3
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@ -1,27 +0,0 @@
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From 800c5cc1e7438818fd80f08c2d472df249a6942d Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Mon, 15 Dec 2014 17:50:15 +0000
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Subject: [PATCH] Remove floor on EDNS0 packet size with DNSSEC.
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---
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src/dnsmasq.c | 5 -----
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diff --git a/src/dnsmasq.c b/src/dnsmasq.c
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index bf2e25a..5c7750d 100644
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--- a/src/dnsmasq.c
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+++ b/src/dnsmasq.c
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@@ -87,11 +87,6 @@ int main (int argc, char **argv)
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if (daemon->edns_pktsz < PACKETSZ)
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daemon->edns_pktsz = PACKETSZ;
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-#ifdef HAVE_DNSSEC
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- /* Enforce min packet big enough for DNSSEC */
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- if (option_bool(OPT_DNSSEC_VALID) && daemon->edns_pktsz < EDNS_PKTSZ)
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- daemon->edns_pktsz = EDNS_PKTSZ;
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-#endif
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daemon->packet_buff_sz = daemon->edns_pktsz > DNSMASQ_PACKETSZ ?
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daemon->edns_pktsz : DNSMASQ_PACKETSZ;
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--
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2.1.3
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@ -1,193 +0,0 @@
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From 56920681eaf2c5eb08fc75baee4939d15d03b0ea Mon Sep 17 00:00:00 2001
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From: Stefan Tomanek <stefan.tomanek+dnsmasq@wertarbyte.de>
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Date: Tue, 31 Mar 2015 22:32:11 +0100
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Subject: [PATCH] add --tftp-no-fail to ignore missing tftp root
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(cherry picked from commit 30d0879ed55cb67b1b735beab3d93f3bb3ef1dd2)
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Conflicts:
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CHANGELOG
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src/dnsmasq.c
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src/dnsmasq.h
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src/option.c
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---
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dnsmasq.conf.example | 3 +++
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man/dnsmasq.8 | 3 +++
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src/dnsmasq.c | 42 +++++++++++++++++++++++++++++++-----------
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src/dnsmasq.h | 4 +++-
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src/option.c | 3 +++
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5 files changed, 43 insertions(+), 12 deletions(-)
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diff --git a/dnsmasq.conf.example b/dnsmasq.conf.example
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index 1bd305d..67be99a 100644
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--- a/dnsmasq.conf.example
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+++ b/dnsmasq.conf.example
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@@ -486,6 +486,9 @@
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# Set the root directory for files available via FTP.
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#tftp-root=/var/ftpd
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+# Do not abort if the tftp-root is unavailable
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+#tftp-no-fail
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+
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# Make the TFTP server more secure: with this set, only files owned by
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# the user dnsmasq is running as will be send over the net.
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#tftp-secure
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diff --git a/man/dnsmasq.8 b/man/dnsmasq.8
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index 0b8e04f..2ff4b96 100644
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--- a/man/dnsmasq.8
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+++ b/man/dnsmasq.8
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@@ -1670,6 +1670,9 @@ Absolute paths (starting with /) are allowed, but they must be within
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the tftp-root. If the optional interface argument is given, the
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directory is only used for TFTP requests via that interface.
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.TP
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+.B --tftp-no-fail
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+Do not abort startup if specified tftp root directories are inaccessible.
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+.TP
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.B --tftp-unique-root
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Add the IP address of the TFTP client as a path component on the end
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of the TFTP-root (in standard dotted-quad format). Only valid if a
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diff --git a/src/dnsmasq.c b/src/dnsmasq.c
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index 5c7750d..b6fa285 100644
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--- a/src/dnsmasq.c
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+++ b/src/dnsmasq.c
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@@ -58,6 +58,9 @@ int main (int argc, char **argv)
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struct dhcp_context *context;
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struct dhcp_relay *relay;
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#endif
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+#ifdef HAVE_TFTP
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+ int tftp_prefix_missing = 0;
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+#endif
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#ifdef LOCALEDIR
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setlocale(LC_ALL, "");
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@@ -623,7 +626,7 @@ int main (int argc, char **argv)
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#endif
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#ifdef HAVE_TFTP
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- if (option_bool(OPT_TFTP))
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+ if (option_bool(OPT_TFTP))
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{
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DIR *dir;
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struct tftp_prefix *p;
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@@ -632,24 +635,33 @@ int main (int argc, char **argv)
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{
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if (!((dir = opendir(daemon->tftp_prefix))))
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{
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- send_event(err_pipe[1], EVENT_TFTP_ERR, errno, daemon->tftp_prefix);
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- _exit(0);
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+ tftp_prefix_missing = 1;
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+ if (!option_bool(OPT_TFTP_NO_FAIL))
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+ {
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+ send_event(err_pipe[1], EVENT_TFTP_ERR, errno, daemon->tftp_prefix);
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+ _exit(0);
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+ }
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}
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closedir(dir);
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}
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-
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+
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for (p = daemon->if_prefix; p; p = p->next)
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{
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+ p->missing = 0;
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if (!((dir = opendir(p->prefix))))
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- {
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- send_event(err_pipe[1], EVENT_TFTP_ERR, errno, p->prefix);
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- _exit(0);
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- }
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+ {
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+ p->missing = 1;
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+ if (!option_bool(OPT_TFTP_NO_FAIL))
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+ {
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+ send_event(err_pipe[1], EVENT_TFTP_ERR, errno, p->prefix);
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+ _exit(0);
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+ }
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+ }
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closedir(dir);
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}
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}
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#endif
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-
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+
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if (daemon->port == 0)
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my_syslog(LOG_INFO, _("started, version %s DNS disabled"), VERSION);
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else if (daemon->cachesize != 0)
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@@ -743,8 +755,9 @@ int main (int argc, char **argv)
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#endif
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#ifdef HAVE_TFTP
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- if (option_bool(OPT_TFTP))
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- {
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+ if (option_bool(OPT_TFTP))
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+ {
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+ struct tftp_prefix *p;
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#ifdef FD_SETSIZE
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if (FD_SETSIZE < (unsigned)max_fd)
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max_fd = FD_SETSIZE;
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@@ -754,7 +767,14 @@ int main (int argc, char **argv)
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daemon->tftp_prefix ? _("root is ") : _("enabled"),
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daemon->tftp_prefix ? daemon->tftp_prefix: "",
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option_bool(OPT_TFTP_SECURE) ? _("secure mode") : "");
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+
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|
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+ if (tftp_prefix_missing)
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|
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+ my_syslog(MS_TFTP | LOG_WARNING, _("warning: %s inaccessible"), daemon->tftp_prefix);
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|
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|
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+ for (p = daemon->if_prefix; p; p = p->next)
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|
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+ if (p->missing)
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+ my_syslog(MS_TFTP | LOG_WARNING, _("warning: TFTP directory %s inaccessible"), p->prefix);
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+
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/* This is a guess, it assumes that for small limits,
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disjoint files might be served, but for large limits,
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a single file will be sent to may clients (the file only needs
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diff --git a/src/dnsmasq.h b/src/dnsmasq.h
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index 1dd61c5..086cb67 100644
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--- a/src/dnsmasq.h
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+++ b/src/dnsmasq.h
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@@ -238,7 +238,8 @@ struct event_desc {
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#define OPT_DNSSEC_NO_SIGN 48
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#define OPT_LOCAL_SERVICE 49
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#define OPT_LOOP_DETECT 50
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-#define OPT_LAST 51
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+#define OPT_TFTP_NO_FAIL 51
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+#define OPT_LAST 52
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/* extra flags for my_syslog, we use a couple of facilities since they are known
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not to occupy the same bits as priorities, no matter how syslog.h is set up. */
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@@ -888,6 +889,7 @@ struct addr_list {
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struct tftp_prefix {
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char *interface;
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char *prefix;
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+ int missing;
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struct tftp_prefix *next;
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};
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diff --git a/src/option.c b/src/option.c
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index 209fa69..fa5e4d3 100644
|
|
||||||
--- a/src/option.c
|
|
||||||
+++ b/src/option.c
|
|
||||||
@@ -147,6 +147,7 @@ struct myoption {
|
|
||||||
#define LOPT_LOCAL_SERVICE 335
|
|
||||||
#define LOPT_DNSSEC_TIME 336
|
|
||||||
#define LOPT_LOOP_DETECT 337
|
|
||||||
+#define LOPT_TFTP_NO_FAIL 338
|
|
||||||
|
|
||||||
#ifdef HAVE_GETOPT_LONG
|
|
||||||
static const struct option opts[] =
|
|
||||||
@@ -227,6 +228,7 @@ static const struct myoption opts[] =
|
|
||||||
{ "dhcp-ignore-names", 2, 0, LOPT_NO_NAMES },
|
|
||||||
{ "enable-tftp", 2, 0, LOPT_TFTP },
|
|
||||||
{ "tftp-secure", 0, 0, LOPT_SECURE },
|
|
||||||
+ { "tftp-no-fail", 0, 0, LOPT_TFTP_NO_FAIL },
|
|
||||||
{ "tftp-unique-root", 0, 0, LOPT_APREF },
|
|
||||||
{ "tftp-root", 1, 0, LOPT_PREFIX },
|
|
||||||
{ "tftp-max", 1, 0, LOPT_TFTP_MAX },
|
|
||||||
@@ -402,6 +404,7 @@ static struct {
|
|
||||||
{ LOPT_PREFIX, ARG_DUP, "<dir>[,<iface>]", gettext_noop("Export files by TFTP only from the specified subtree."), NULL },
|
|
||||||
{ LOPT_APREF, OPT_TFTP_APREF, NULL, gettext_noop("Add client IP address to tftp-root."), NULL },
|
|
||||||
{ LOPT_SECURE, OPT_TFTP_SECURE, NULL, gettext_noop("Allow access only to files owned by the user running dnsmasq."), NULL },
|
|
||||||
+ { LOPT_TFTP_NO_FAIL, OPT_TFTP_NO_FAIL, NULL, gettext_noop("Do not terminate the service if TFTP directories are inaccessible."), NULL },
|
|
||||||
{ LOPT_TFTP_MAX, ARG_ONE, "<integer>", gettext_noop("Maximum number of conncurrent TFTP transfers (defaults to %s)."), "#" },
|
|
||||||
{ LOPT_NOBLOCK, OPT_TFTP_NOBLOCK, NULL, gettext_noop("Disable the TFTP blocksize extension."), NULL },
|
|
||||||
{ LOPT_TFTP_LC, OPT_TFTP_LC, NULL, gettext_noop("Convert TFTP filenames to lowercase"), NULL },
|
|
||||||
--
|
|
||||||
2.1.4
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,38 @@
|
||||||
|
From 35042c3ef61b3bc07f0f9418dff6be6ed78f4aa1 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Steven Barth <steven@midlink.org>
|
||||||
|
Date: Fri, 10 Apr 2015 10:46:57 +0200
|
||||||
|
Subject: [PATCH] Revert "Don't reply to DHCPv6 SOLICIT messages when not
|
||||||
|
configured for statefull DHCPv6."
|
||||||
|
|
||||||
|
This reverts commit 61b838dd574c51d96fef100285a0d225824534f9.
|
||||||
|
---
|
||||||
|
src/rfc3315.c | 13 -------------
|
||||||
|
1 file changed, 13 deletions(-)
|
||||||
|
|
||||||
|
diff --git a/src/rfc3315.c b/src/rfc3315.c
|
||||||
|
index c1ddc80..50131d8 100644
|
||||||
|
--- a/src/rfc3315.c
|
||||||
|
+++ b/src/rfc3315.c
|
||||||
|
@@ -824,19 +824,6 @@ 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);
|
||||||
|
--
|
||||||
|
2.1.4
|
||||||
|
|
||||||
|
|
@ -1,42 +0,0 @@
|
||||||
Index: dnsmasq-2.72/Makefile
|
|
||||||
===================================================================
|
|
||||||
--- dnsmasq-2.72.orig/Makefile 2014-12-30 19:46:10.484921940 +0800
|
|
||||||
+++ dnsmasq-2.72/Makefile 2014-12-30 19:56:39.712926794 +0800
|
|
||||||
@@ -74,6 +74,10 @@
|
|
||||||
hdrs = dnsmasq.h config.h dhcp-protocol.h dhcp6-protocol.h \
|
|
||||||
dns-protocol.h radv-protocol.h ip6addr.h
|
|
||||||
|
|
||||||
+COPT_CONF = $(top)/.copt_$(shell $(CC) -DDNSMASQ_COMPILE_OPTS $(COPTS) -E $(top)/$(SRC)/config.h | \
|
|
||||||
+ ( md5sum 2>/dev/null || md5 ) | cut -f 1 -d ' ')
|
|
||||||
+COPT_CONF_WILD = $(top)/.copt_*
|
|
||||||
+
|
|
||||||
all : $(BUILDDIR)
|
|
||||||
@cd $(BUILDDIR) && $(MAKE) \
|
|
||||||
top="$(top)" \
|
|
||||||
@@ -83,7 +87,7 @@
|
|
||||||
|
|
||||||
mostly_clean :
|
|
||||||
rm -f $(BUILDDIR)/*.mo $(BUILDDIR)/*.pot
|
|
||||||
- rm -f $(BUILDDIR)/.configured $(BUILDDIR)/*.o $(BUILDDIR)/dnsmasq.a $(BUILDDIR)/dnsmasq
|
|
||||||
+ rm -f $(BUILDDIR)/$(COPT_CONF_WILD) $(BUILDDIR)/*.o $(BUILDDIR)/dnsmasq.a $(BUILDDIR)/dnsmasq
|
|
||||||
|
|
||||||
clean : mostly_clean
|
|
||||||
rm -f $(BUILDDIR)/dnsmasq_baseline
|
|
||||||
@@ -139,7 +143,7 @@
|
|
||||||
|
|
||||||
# rules below are targets in recusive makes with cwd=$(BUILDDIR)
|
|
||||||
|
|
||||||
-.configured: $(hdrs)
|
|
||||||
+$(COPT_CONF): $(hdrs)
|
|
||||||
@rm -f *.o
|
|
||||||
@touch $@
|
|
||||||
|
|
||||||
@@ -149,7 +153,7 @@
|
|
||||||
.c.o:
|
|
||||||
$(CC) $(CFLAGS) $(COPTS) $(i18n) $(build_cflags) $(RPM_OPT_FLAGS) -c $<
|
|
||||||
|
|
||||||
-dnsmasq : .configured $(hdrs) $(objs)
|
|
||||||
+dnsmasq : $(COPT_CONF) $(hdrs) $(objs)
|
|
||||||
$(CC) $(LDFLAGS) -o $@ $(objs) $(build_libs) $(LIBS)
|
|
||||||
|
|
||||||
dnsmasq.pot : $(objs:.o=.c) $(hdrs)
|
|
||||||
Loading…
Reference in a new issue