From ce877b8e97ddd4e778762cb638191cd71057146e Mon Sep 17 00:00:00 2001 From: Samuel Cabrero Date: Wed, 18 Jan 2023 17:25:29 +0100 Subject: [PATCH] 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=, line=, type=, cond=) 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=, name2=) 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=, driverarg=, dbdata=0x7f270430f680, version=) 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 , options=) 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=, name=, 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=, rr=0x7f2706ff8ee0) at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1427 #16 0x00007f2717d10ccd in foreach_rr (db=0x7f2704291740, ver=, name=0x7f26caa61d00, type=, covers=, rr_action=rr_action@entry=0x7f2717d10f60 , 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 , db=, ver=, name=, type=, covers=, update_rr=0x7f2706ff94b0, diff=0x7f2706ff9400) at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1454 #18 0x00007f2717d1bccd in update_action (task=, event=) 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=, events=) at src/unix/async.c:163 #27 0x00007f2717c6825d in uv__io_poll (loop=0x7f2716236570, timeout=) at src/unix/epoll.c:374 #28 0x00007f2717c5247a in uv__io_poll (timeout=, 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 Reviewed-by: Douglas Bagnall Autobuild-User(master): Samuel Cabrero Autobuild-Date(master): Thu Jan 19 10:20:27 UTC 2023 on atb-devel-224 (cherry picked from commit fcecdfa8e5c651d4a27f8fcd5df6e9bce37ed8a7) --- source4/dns_server/dns_crypto.c | 2 +- source4/dns_server/dns_update.c | 4 ++-- source4/dns_server/dnsserver_common.c | 21 +++++++++++++-------- source4/dns_server/dnsserver_common.h | 2 +- source4/rpc_server/dnsserver/dnsutils.c | 2 +- source4/torture/dns/dlz_bind9.c | 8 ++++---- 6 files changed, 22 insertions(+), 17 deletions(-) diff --git a/source4/dns_server/dns_crypto.c b/source4/dns_server/dns_crypto.c index 6d2b8648757..b38eb8b13bb 100644 --- a/source4/dns_server/dns_crypto.c +++ b/source4/dns_server/dns_crypto.c @@ -81,7 +81,7 @@ struct dns_server_tkey *dns_find_tkey(struct dns_server_tkey_store *store, if (tmp_key == NULL) { continue; } - if (dns_name_equal(name, tmp_key->name)) { + if (samba_dns_name_equal(name, tmp_key->name)) { tkey = tmp_key; break; } diff --git a/source4/dns_server/dns_update.c b/source4/dns_server/dns_update.c index 2d5f353671e..7b87dc6c6e3 100644 --- a/source4/dns_server/dns_update.c +++ b/source4/dns_server/dns_update.c @@ -593,7 +593,7 @@ static WERROR handle_one_update(struct dns_server *dns, * work out if the node as a whole needs tombstoning. */ if (update->rr_type == DNS_QTYPE_ALL) { - if (dns_name_equal(update->name, zone->name)) { + if (samba_dns_name_equal(update->name, zone->name)) { for (i = first; i < rcount; i++) { if (recs[i].wType == DNS_TYPE_SOA) { @@ -617,7 +617,7 @@ static WERROR handle_one_update(struct dns_server *dns, } } - } else if (dns_name_equal(update->name, zone->name)) { + } else if (samba_dns_name_equal(update->name, zone->name)) { if (update->rr_type == DNS_QTYPE_SOA) { return WERR_OK; diff --git a/source4/dns_server/dnsserver_common.c b/source4/dns_server/dnsserver_common.c index 03f76d4a871..0481b0715c7 100644 --- a/source4/dns_server/dnsserver_common.c +++ b/source4/dns_server/dnsserver_common.c @@ -1331,7 +1331,8 @@ bool dns_record_match(struct dnsp_DnssrvRpcRecord *rec1, return memcmp(&rec1_in_addr6, &rec2_in_addr6, sizeof(rec1_in_addr6)) == 0; } case DNS_TYPE_CNAME: - return dns_name_equal(rec1->data.cname, rec2->data.cname); + return samba_dns_name_equal(rec1->data.cname, + rec2->data.cname); case DNS_TYPE_TXT: if (rec1->data.txt.count != rec2->data.txt.count) { return false; @@ -1343,23 +1344,27 @@ bool dns_record_match(struct dnsp_DnssrvRpcRecord *rec1, } return true; case DNS_TYPE_PTR: - return dns_name_equal(rec1->data.ptr, rec2->data.ptr); + return samba_dns_name_equal(rec1->data.ptr, rec2->data.ptr); case DNS_TYPE_NS: - return dns_name_equal(rec1->data.ns, rec2->data.ns); + return samba_dns_name_equal(rec1->data.ns, rec2->data.ns); case DNS_TYPE_SRV: return rec1->data.srv.wPriority == rec2->data.srv.wPriority && rec1->data.srv.wWeight == rec2->data.srv.wWeight && rec1->data.srv.wPort == rec2->data.srv.wPort && - dns_name_equal(rec1->data.srv.nameTarget, rec2->data.srv.nameTarget); + samba_dns_name_equal(rec1->data.srv.nameTarget, + rec2->data.srv.nameTarget); case DNS_TYPE_MX: return rec1->data.mx.wPriority == rec2->data.mx.wPriority && - dns_name_equal(rec1->data.mx.nameTarget, rec2->data.mx.nameTarget); + samba_dns_name_equal(rec1->data.mx.nameTarget, + rec2->data.mx.nameTarget); case DNS_TYPE_SOA: - return dns_name_equal(rec1->data.soa.mname, rec2->data.soa.mname) && - dns_name_equal(rec1->data.soa.rname, rec2->data.soa.rname) && + return samba_dns_name_equal(rec1->data.soa.mname, + rec2->data.soa.mname) && + samba_dns_name_equal(rec1->data.soa.rname, + rec2->data.soa.rname) && rec1->data.soa.serial == rec2->data.soa.serial && rec1->data.soa.refresh == rec2->data.soa.refresh && rec1->data.soa.retry == rec2->data.soa.retry && @@ -1485,7 +1490,7 @@ exit: /* see if two DNS names are the same */ -bool dns_name_equal(const char *name1, const char *name2) +bool samba_dns_name_equal(const char *name1, const char *name2) { size_t len1 = strlen(name1); size_t len2 = strlen(name2); diff --git a/source4/dns_server/dnsserver_common.h b/source4/dns_server/dnsserver_common.h index c3ba369e3bf..a0c1065ae58 100644 --- a/source4/dns_server/dnsserver_common.h +++ b/source4/dns_server/dnsserver_common.h @@ -76,7 +76,7 @@ WERROR dns_common_name2dn(struct ldb_context *samdb, TALLOC_CTX *mem_ctx, const char *name, struct ldb_dn **_dn); -bool dns_name_equal(const char *name1, const char *name2); +bool samba_dns_name_equal(const char *name1, const char *name2); bool dns_record_match(struct dnsp_DnssrvRpcRecord *rec1, struct dnsp_DnssrvRpcRecord *rec2); diff --git a/source4/rpc_server/dnsserver/dnsutils.c b/source4/rpc_server/dnsserver/dnsutils.c index 56b2690aa95..2c56946b0f6 100644 --- a/source4/rpc_server/dnsserver/dnsutils.c +++ b/source4/rpc_server/dnsserver/dnsutils.c @@ -311,7 +311,7 @@ struct dnsserver_zone *dnsserver_find_zone(struct dnsserver_zone *zones, const c struct dnsserver_zone *z = NULL; for (z = zones; z; z = z->next) { - if (dns_name_equal(zone_name, z->name)) { + if (samba_dns_name_equal(zone_name, z->name)) { break; } } diff --git a/source4/torture/dns/dlz_bind9.c b/source4/torture/dns/dlz_bind9.c index 1f330106a98..f15671e370c 100644 --- a/source4/torture/dns/dlz_bind9.c +++ b/source4/torture/dns/dlz_bind9.c @@ -414,18 +414,18 @@ static bool dlz_bind9_putnamedrr_torture_hook(struct test_expected_rr *expected, } else if (strcmp(type, "cname") == 0 || strcmp(type, "ptr") == 0 || strcmp(type, "ns") == 0) { - if (! dns_name_equal(data, data2)) { + if (!samba_dns_name_equal(data, data2)) { continue; } } else if (strcmp(type, "mx") == 0) { /* - * dns_name_equal works for MX records because - * the space in "10 example.com." is + * samba_dns_name_equal works for MX records + * because the space in "10 example.com." is * theoretically OK as a DNS character. And we * need it because dlz will add the trailing * dot. */ - if (! dns_name_equal(data, data2)) { + if (!samba_dns_name_equal(data, data2)) { continue; } } else if (strcmp(data, data2) != 0) { -- 2.39.0