The 'madvise', syscall is missing.
Found with 'utrace /usr/sbin/umdns' on an R7800 and RT3200.
Signed-off-by: Michael Peleshenko <mpeleshenko@gmail.com>
Looks like 'openat', 'pipe2' and 'ppoll' are now needed, possibly due
to changes on libraries used by umdns now using slightly different
calls.
Found using
/etc/init.d/umdns trace
now use umdns, ie. cover all ubus call etc., then
/etc/init.d/umdns stop
find list of syscalls traced in /tmp/umdns.*.json
Fixes: FS#3355 ("UMDNS: does not start on master with seccomp")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Now that ujail supports seccomp also on Aarch64, add missing syscall
'fstat' to the list of allowed syscalls.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This should fix an issue when user have a router with enabled seccomp
and tries to run umdns package which was build with SDK with disabled
seccomp support.
Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>
procd-seccomp switched to OCI-compliant seccomp parser instead of our
(legacy, OpenWrt-specific) format. Convert ruleset to new format.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
59e4fc98162d cache: cache_answer: fix off by one
4cece9cc7db4 cache: cache_record_find: fix buffer overflow
be687257ee0b cmake: tests: provide umdns-san binary
bf01f2dd0089 tests: add dns_handle_packet_file tool
134afc728846 tests: add libFuzzer based fuzzing
de08a2c71ca8 cmake: create static library
cdc18fbb3ea8 interface: fix possible null pointer dereference
1fa034c65cb6 interface: fix value stored to 'fd' is never read
3a67ebe3fc66 Add initial GitLab CI support
50caea125517 cmake: fix include dirs and libs lookup
Signed-off-by: Petr Štetiar <ynezz@true.cz>
d13290b Fix advertised IPv6 addresses
Don't just serve link-local addresses via mdns, offer all.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
cdac046 dns.c: fix input validation fix
Due to a slight foobar typo, failing to de-reference a pointer, previous
fix not quite as complete as it should have been.
Improve CVE-2020-11750 fix
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
ab7a39a umdns: fix unused error
45c4953 dns: explicitly endian-convert all fields in header and question
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
gcc 8 & 9 appear to be more picky with regards access alignment to
packed structures, leading to this warning in dns.c:
dns.c:261:2: error: converting a packed ‘struct dns_question’ pointer
(alignment 1) to a ‘uint16_t’ {aka ‘short unsigned int’} pointer
(alignment 2) may result in an unaligned pointer value
[-Werror=address-of-packed-member]
261 | uint16_t *swap = (uint16_t *) q;
Work around what I think is a false positive by turning the warning off.
Not ideal, but not quite as not ideal as build failure.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
b84fdac Add debug output for service_timeout
8f7e3bc Remove incorrect comma in http service json config
9f40133 Remove ttl==255 restriction for queries
Signed-off-by: John Crispin <john@phrozen.org>
The umdns init script includes function/network.sh globally, outside of any
service procedure. This causes init script activation to fail in buildroot
and IB context if umdns is set to builtin.
Additionally, the network.sh helper is not actually used.
Drop the entire include in order to repair init script activation in build
host context. Fixes FS#658.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This includes following changes:
0e8b948 Support specifying instance name in JSON file
49fdb9f Support PTR queries for a specific service
26ce7dc Allow filtering with instance name in service_reply
920c62a Store instance name in the struct service
ff09d9a Rename service_name function to the service_instance_name
64f78f1 Rename mdns_hostname variable to the umdns_host_label
Previous package update pulled commit 70c66fbbcde86 ("Fix sending
replies to PTR questions") which introduced a regression which this
update fixes.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This includes following changes:
480d7bc Fix sending unicast questions on cache expire
a0403cd Keep source sockaddr for every cached DNS record
1478293 Fix code freeing cached non-A(AAA) records too early
9f1cc22 Fix replying to "QU" questions received on unicast interface
943bedb Fix reading port of incoming packets
c725494 Use MCAST_PORT define for port 5353
ce7e9e9 Use one define for DNS-Based Service Discovery service name
e1bacef Drop entries cached for interface we're going to delete
496aeba Fix comment typo in cache_gc_timer
f89986b Fix refreshing cached A(AAA) records that expire
Previous updates made umdns work as expected on startup but there were
still many bugs. They were mostly related to runtime - cache management
and requests + responses. E.g. umdns was never able to send question on
DNS record expire. It was also ignoring all incoming unicast questions.
Since these issues are quite serious it makes sense to backport this
update to the stable branch.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This includes 3 cleanups:
fd5a160 Don't cache hosts as services
80dd246 Refresh DNS records A and AAAA directly
6515101 Access cached records (instead of services) to read list of hosts
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This fixes crash in interface_start caused by freeing interface in
interface_free without stopping a timeout.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This update includes numerous small fixes for:
1) Interfaces setup
2) Packets parsing
3) Sending replies
Without this there were multiple problems with exchanging information
between (u)mdns and other implementations (including (u)mdns as well).
This also follows project rename to umdns which was required to avoid
confusion with Apple's mdnsd from mDNSResponder project.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
