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s4-dns: Update serial number for zone on dns updates

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Signed-off-by: Andrew Tridgell <tridge@samba.org>
This commit is contained in:
Amitay Isaacs 2011-10-18 15:20:14 +11:00 committed by Andrew Tridgell
parent 7ca0bed38d
commit 2feb81f659
1 changed files with 84 additions and 4 deletions
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88
source4/rpc_server/dnsserver/dnsdb.c
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@ -104,6 +104,67 @@ failed:
}
static unsigned int dnsserver_update_soa(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct dnsserver_zone *z)
{
const char * const attrs[] = { "dnsRecord", NULL };
struct ldb_result *res;
struct dnsp_DnssrvRpcRecord rec;
struct ldb_message_element *el;
enum ndr_err_code ndr_err;
int ret, i, serial = -1;
NTTIME t;
unix_to_nt_time(&t, time(NULL));
t /= 10*1000*1000; /* convert to seconds (NT time is in 100ns units) */
t /= 3600; /* convert to hours */
ret = ldb_search(samdb, mem_ctx, &res, z->zone_dn, LDB_SCOPE_ONELEVEL, attrs,
"(&(objectClass=dnsNode)(name=@))");
if (ret != LDB_SUCCESS || res->count == 0) {
return -1;
}
el = ldb_msg_find_element(res->msgs[0], "dnsRecord");
if (el == NULL) {
return -1;
}
for (i=0; i<el->num_values; i++) {
ndr_err = ndr_pull_struct_blob(&el->values[i], mem_ctx, &rec,
(ndr_pull_flags_fn_t)ndr_pull_dnsp_DnssrvRpcRecord);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
continue;
}
if (rec.wType == DNS_TYPE_SOA) {
serial = rec.data.soa.serial + 1;
rec.dwSerial = serial;
rec.dwTimeStamp = (uint32_t)t;
rec.data.soa.serial = serial;
ndr_err = ndr_push_struct_blob(&el->values[i], mem_ctx, &rec,
(ndr_push_flags_fn_t)ndr_push_dnsp_DnssrvRpcRecord);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return -1;
}
break;
}
}
if (serial != -1) {
el->flags = LDB_FLAG_MOD_REPLACE;
ret = ldb_modify(samdb, res->msgs[0]);
if (ret != LDB_SUCCESS) {
return -1;
}
}
return serial;
}
static WERROR dnsserver_db_do_add_rec(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct ldb_dn *dn,
@ -191,14 +252,21 @@ WERROR dnsserver_db_add_record(TALLOC_CTX *mem_ctx,
enum ndr_err_code ndr_err;
NTTIME t;
int ret, i;
int serial;
rec = dns_to_dnsp_copy(mem_ctx, add_record);
W_ERROR_HAVE_NO_MEMORY(rec);
unix_to_nt_time(&t, time(NULL));
t /= 10*1000*1000;
serial = dnsserver_update_soa(mem_ctx, samdb, z);
if (serial < 0) {
return WERR_INTERNAL_DB_ERROR;
}
rec->dwSerial = 0; /* FIXME: put soa serial value */
unix_to_nt_time(&t, time(NULL));
t /= 10*1000*1000; /* convert to seconds (NT time is in 100ns units) */
t /= 3600; /* convert to hours */
rec->dwSerial = serial;
rec->dwTimeStamp = t;
ret = ldb_search(samdb, mem_ctx, &res, z->zone_dn, LDB_SCOPE_ONELEVEL, attrs,
@ -274,6 +342,12 @@ WERROR dnsserver_db_update_record(TALLOC_CTX *mem_ctx,
enum ndr_err_code ndr_err;
NTTIME t;
int ret, i;
int serial;
serial = dnsserver_update_soa(mem_ctx, samdb, z);
if (serial < 0) {
return WERR_INTERNAL_DB_ERROR;
}
arec = dns_to_dnsp_copy(mem_ctx, add_record);
W_ERROR_HAVE_NO_MEMORY(arec);
@ -284,7 +358,7 @@ WERROR dnsserver_db_update_record(TALLOC_CTX *mem_ctx,
unix_to_nt_time(&t, time(NULL));
t /= 10*1000*1000;
arec->dwSerial = 0; /* FIXME: put soa serial value */
arec->dwSerial = serial;
arec->dwTimeStamp = t;
ret = ldb_search(samdb, mem_ctx, &res, z->zone_dn, LDB_SCOPE_ONELEVEL, attrs,
@ -364,6 +438,12 @@ WERROR dnsserver_db_delete_record(TALLOC_CTX *mem_ctx,
struct ldb_message_element *el;
enum ndr_err_code ndr_err;
int ret, i;
int serial;
serial = dnsserver_update_soa(mem_ctx, samdb, z);
if (serial < 0) {
return WERR_INTERNAL_DB_ERROR;
}
rec = dns_to_dnsp_copy(mem_ctx, del_record);
W_ERROR_HAVE_NO_MEMORY(rec);