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Commit Graph

30 Commits

Author SHA1 Message Date
Stefan Metzmacher
40fb810de3 s4:dns_server: Add some more debugging in order to find problems with level 10 logs
We had customer problems where level 10 logs were not good enough in
order to find the reason for failing dns updates.

With the new debug message there's at least a chance to
find out what the problem could be.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-07-19 09:58:37 +00:00
Samuel Cabrero
fcecdfa8e5 s4:dnsserver: Rename dns_name_equal() to samba_dns_name_equal()
This function already exists in bind9 but takes different arguments, so when
the DLZ is loaded and this function is called bind crashes:

  named[1523]: samba_dlz: allowing update of signer=DESKTOP-8BUKMBK\$\@AFOREST.AD name=118.101.168.192.in-addr.arpa tcpaddr=192.168.101.118  type=PTR key=1264-ms-7.1-2ac9.9ef238e1-9747-11ed-9f95-525400dc6981/159/0
  named[1523]: samba_dlz: allowing update of signer=DESKTOP-8BUKMBK\$\@AFOREST.AD name=118.101.168.192.in-addr.arpa tcpaddr=192.168.101.118  type=PTR key=1264-ms-7.1-2ac9.9ef238e1-9747-11ed-9f95-525400dc6981/159/0
  named[1523]: client @0x7f26caa90f68 192.168.101.118#58223/key DESKTOP-8BUKMBK\$\@AFOREST.AD: updating zone '101.168.192.in-addr.arpa/NONE': deleting rrset at '118.101.168.192.in-addr.ar
  named[1523]: name.c:664: REQUIRE(((name1) != ((void *)0) && ((const isc__magic_t *)(name1))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n'))))) failed, back trace

Backtrace:

  #0  0x00007f2716c957ec in __pthread_kill_implementation () from /lib64/libc.so.6
  #1  0x00007f2716c42816 in raise () from /lib64/libc.so.6
  #2  0x00007f2716c2b81c in abort () from /lib64/libc.so.6
  #3  0x000055d4de847995 in assertion_failed (file=<optimized out>, line=<optimized out>,
      type=<optimized out>, cond=<optimized out>) at /usr/src/debug/bind-9.18.10/bin/named/main.c:237
  #4  0x00007f27176388fc in isc_assertion_failed (file=file@entry=0x7f27173b0df6 "name.c",
      line=line@entry=664, type=type@entry=isc_assertiontype_require,
      cond=cond@entry=0x7f27173b0268 "((name1) != ((void *)0) && ((const isc__magic_t *)(name1))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n'))))")
      at /usr/src/debug/bind-9.18.10/lib/isc/assertions.c:48
  #5  0x00007f27172946f9 in dns_name_equal (name1=<optimized out>, name2=<optimized out>)
      at /usr/src/debug/bind-9.18.10/lib/dns/name.c:664

  **** Here bind's dns_name_equal() is called instead of samba's dns_name_equal() ****

  #6  0x00007f27077ad6f2 in dns_record_match (rec1=0x7f26f8042d70, rec2=0x7f26f8044d10)
      at ../../source4/dns_server/dnsserver_common.c:1346
  #7  0x00007f271404732c in b9_record_match (rec1=0x7f26f8042d70, rec2=0x7f26f8044d10)
      at ../../source4/dns_server/dlz_bind9.c:1830
  #8  0x00007f2714047daa in dlz_subrdataset (name=0x7f2706ff82f0 "118.101.168.192.in-addr.arpa",
      rdatastr=0x7f26c9c10000 "118.101.168.192.in-addr.arpa.\t1200\tIN\tPTR\tDESKTOP-8BUKMBK.aforest.ad.",
      dbdata=0x7f271003d300, version=0x7f26f8044b20) at ../../source4/dns_server/dlz_bind9.c:2077
  #9  0x000055d4de84afb4 in dlopen_dlz_subrdataset (name=0x7f2706ff82f0 "118.101.168.192.in-addr.arpa",
      rdatastr=<optimized out>, driverarg=<optimized out>, dbdata=0x7f270430f680, version=<optimized out>)
      at /usr/src/debug/bind-9.18.10/bin/named/dlz_dlopen_driver.c:483
  #10 0x00007f271738e734 in modrdataset.constprop.0 (db=0x7f2704291740, node=0x7f26c9c006e0,
      version=0x7f26f8044b20, rdataset=0x7f2706ff8830,
      mod_function=0x55d4de84af80 <dlopen_dlz_subrdataset>, options=<optimized out>)
      at /usr/src/debug/bind-9.18.10/lib/dns/sdlz.c:1107
  #11 0x00007f2717251855 in diff_apply (diff=diff@entry=0x7f2706ff8df0, db=db@entry=0x7f2704291740,
      ver=ver@entry=0x7f26f8044b20, warn=warn@entry=true) at /usr/src/debug/bind-9.18.10/lib/dns/diff.c:370
  #12 0x00007f2717251c8a in dns_diff_apply (diff=diff@entry=0x7f2706ff8df0, db=db@entry=0x7f2704291740,
      ver=ver@entry=0x7f26f8044b20) at /usr/src/debug/bind-9.18.10/lib/dns/diff.c:465
  #13 0x00007f2717d105aa in do_one_tuple (tuple=tuple@entry=0x7f2706ff8e50, db=db@entry=0x7f2704291740,
      ver=ver@entry=0x7f26f8044b20, diff=diff@entry=0x7f2706ff9400)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:454
  #14 0x00007f2717d10fff in update_one_rr (rdata=0x7f2706ff8ee8, ttl=<optimized out>,
      name=<optimized out>, op=DNS_DIFFOP_DEL, diff=0x7f2706ff9400, ver=0x7f26f8044b20, db=0x7f2704291740)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:505
  #15 delete_if_action (data=<optimized out>, rr=0x7f2706ff8ee0)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1427
  #16 0x00007f2717d10ccd in foreach_rr (db=0x7f2704291740, ver=<optimized out>, name=0x7f26caa61d00,
      type=<optimized out>, covers=<optimized out>,
      rr_action=rr_action@entry=0x7f2717d10f60 <delete_if_action>, rr_action_data=0x7f2706ff9280)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:736
  #17 0x00007f2717d10e76 in delete_if (predicate=predicate@entry=0x7f2717d0fb10 <true_p>,
      db=<optimized out>, ver=<optimized out>, name=<optimized out>, type=<optimized out>,
      covers=<optimized out>, update_rr=0x7f2706ff94b0, diff=0x7f2706ff9400)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1454
  #18 0x00007f2717d1bccd in update_action (task=<optimized out>, event=<optimized out>)
      at /usr/src/debug/bind-9.18.10/lib/ns/update.c:3299
  #19 0x00007f271765eb4c in task_run (task=0x7f27155ccf00)
      at /usr/src/debug/bind-9.18.10/lib/isc/task.c:823
  #20 isc_task_run (task=0x7f27155ccf00) at /usr/src/debug/bind-9.18.10/lib/isc/task.c:904
  #21 0x00007f271762cb12 in isc__nm_async_task (worker=0x7f2716236560, ev0=0x7f26caa07000)
      at netmgr/netmgr.c:840
  #22 process_netievent (worker=worker@entry=0x7f2716236560, ievent=0x7f26caa07000) at netmgr/netmgr.c:918
  #23 0x00007f271762d197 in process_queue (worker=worker@entry=0x7f2716236560,
      type=type@entry=NETIEVENT_TASK) at netmgr/netmgr.c:1011
  #24 0x00007f271762d3b3 in process_all_queues (worker=0x7f2716236560) at netmgr/netmgr.c:765
  #25 async_cb (handle=0x7f27162368c0) at netmgr/netmgr.c:794
  #26 0x00007f2717c4cb0d in uv__async_io (loop=0x7f2716236570, w=<optimized out>, events=<optimized out>)
      at src/unix/async.c:163
  #27 0x00007f2717c6825d in uv__io_poll (loop=0x7f2716236570, timeout=<optimized out>)
      at src/unix/epoll.c:374
  #28 0x00007f2717c5247a in uv__io_poll (timeout=<optimized out>, loop=0x7f2716236570)
      at src/unix/udp.c:122
  #29 uv_run (loop=loop@entry=0x7f2716236570, mode=mode@entry=UV_RUN_DEFAULT) at src/unix/core.c:406
  #30 0x00007f271762d834 in nm_thread (worker0=0x7f2716236560) at netmgr/netmgr.c:696
  #31 0x00007f27176627f5 in isc__trampoline_run (arg=0x55d4dfe3ad70)
      at /usr/src/debug/bind-9.18.10/lib/isc/trampoline.c:189
  #32 0x00007f2716c9398d in start_thread () from /lib64/libc.so.6
  #33 0x00007f2716d19344 in clone () from /lib64/libc.so.6

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14030

Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

Autobuild-User(master): Samuel Cabrero <scabrero@samba.org>
Autobuild-Date(master): Thu Jan 19 10:20:27 UTC 2023 on atb-devel-224
2023-01-19 10:20:27 +00:00
Andreas Schneider
121af4c3fc s4:dns_crypto: Remove unused include of hmac_md5.h
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-02-22 21:48:11 +01:00
Volker Lendecke
f1ff407524 dns: Do NULL checks in dns_sign_tsig
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-01-10 02:41:29 +01:00
Volker Lendecke
d8acbe73d9 dns: Simplify logic a bit
We don't need a separate boolean variable

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2018-06-01 11:28:22 +02:00
Volker Lendecke
d3c82e686b dns: Simplify logic a bit
We've done an early return if (!found_tsig) a few lines before.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2018-06-01 11:28:22 +02:00
Günther Deschner
8416a97b30 werror: replace WERR_INVALID_PARAM with WERR_INVALID_PARAMETER in source4/dns_server/
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-09-28 00:04:23 +02:00
Günther Deschner
c1c079cf3d werror: replace WERR_NOMEM with WERR_NOT_ENOUGH_MEMORY in source4/dns_server/
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-09-28 00:04:19 +02:00
Jeremy Allison
c3dfeb3aa6 s4: dns: Correctly check for talloc failure.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Jun 16 16:55:15 CEST 2016 on sn-devel-144
2016-06-16 16:55:15 +02:00
Ralph Boehme
8f46bf2102 s4/dns_server: don't compute TSIG MAC in TSIG error records
See RFC 2845 "4.3. TSIG on TSIG Error returns".

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:28 +02:00
Ralph Boehme
8b4a2dcf38 s4/dns_server: error codes for failing MAC verification in TSIG requests
According to RFC 2845 "4.5.3. MAC check and error handling" we must
return NOTAUTH and DNS_RCODE_BADSIG when MAC verification fails.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Ralph Boehme
77c5bfdce4 s4/dns_server: ensure we store the key name in error code paths
We need the TKEY name when adding TSIG records to error responses.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Ralph Boehme
c1fca8fa39 s4/dns_server: not finding the key here is a fatal error
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Ralph Boehme
830316ce84 s4/dns_server: split out function that does the MAC computation
Split out function that does the MAC computation from the TSIG record
creating function. This will later simplify the code when creating error
responsed to TSIG requests with bad MACs where we have to add the TSIG
record with an empty MAC.

No functional behaviour change besides hard coding "gss-tsig" algorithm
name: later when sending a TSIG error response for a TKEY request with a
bad keyname, we won't have a tkey to fetch the algorithm name from.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Ralph Boehme
8ed125e8bb s4/dns_server: include request MAC in TSIG response MAC calculation
According to RFC 2845 "4.2 TSIG on Answers", when the request is signed,
the request MAC must be included in the response MAC calculation.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Ralph Boehme
bea4aec521 librpc/dns: remove original_id from dns_fake_tsig_rec
Cf RFC2845, 3.4.2. "TSIG Variables", the request id (original_id) is not
used in the MAC calculation. This also explains the mysterious 2 bytes
padding.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-16 00:06:27 +02:00
Stefan Metzmacher
0062a2f5fb s4:dns_server: allocate substructures of struct dns_request_state on the correct TALLOC_CTX
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2014-11-18 04:17:09 +01:00
Kai Blin
f31bda6715 dns: Use new DNS debugclass in DNS server
Signed-off-by: Kai Blin <kai@samba.org>
Reviewed-By: Amitay Isaacs <amitay@gmail.com>
2013-05-16 21:40:15 +10:00
Kai Blin
8ba8020586 s4 dns: Make debug output less noisy
Autobuild-User(master): Kai Blin <kai@samba.org>
Autobuild-Date(master): Fri Sep  7 00:31:56 CEST 2012 on sn-devel-104
2012-09-07 00:31:56 +02:00
Kai Blin
2b17566e89 s4 dns: Make sure to remember incoming tkey name 2012-09-05 19:08:33 +02:00
Kai Blin
53f602c374 s4 dns: Verify incoming TSIG signatures 2012-09-05 19:02:17 +02:00
Kai Blin
7fe5e2cdcb s4 dns: Handle GSS-TSIG signature creation 2012-09-05 19:02:17 +02:00
Kai Blin
c0e6a4b1b0 s4 dns: Move dns_find_tkey to an extra file 2012-09-05 19:02:16 +02:00
Kai Blin
558fa4c45a s4 dns: Revert erroneous push from wrong branch
I've pushed the wrong branch for this, sorry about that.

Autobuild-User(master): Kai Blin <kai@samba.org>
Autobuild-Date(master): Wed Sep  5 14:10:54 CEST 2012 on sn-devel-104
2012-09-05 14:10:54 +02:00
Kai Blin
b5dd26cc69 s4 dns: Make sure to remember incoming tkey name 2012-09-05 08:41:24 +02:00
Kai Blin
140a8d86ac more tsig_verify stuff 2012-09-05 08:41:24 +02:00
Kai Blin
cf4333b0cd hack: dns_sign_tsig correct memcpy 2012-09-05 08:41:23 +02:00
Kai Blin
a0c2453405 HACK remove debug statement 2012-09-05 08:41:23 +02:00
Kai Blin
f3e44c390c s4 dns: Verify incoming TSIG signatures 2012-09-05 08:41:23 +02:00
Kai Blin
fc9de26497 s4 dns: Handle GSS-TSIG signatures 2012-09-05 08:41:23 +02:00