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authorGünther Deschner <gd@samba.org>2007-08-28 14:27:48 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:30:16 -0500
commit22cf5a3f8086b8f823fa5c45bce4432df825b92c (patch)
tree581b844de5185a1692a127e7e16a566cf4769995 /source3/libads
parentc7489a5d96b20c0d9437560978de03e8ff38abd7 (diff)
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r24739: With resolve_ads() allow to query for PDCs as well.
Also add dns query functions to find GCs and DCs by GUID. Guenther (This used to be commit cc469157f6684ec507bf1c3a659fc36a53d304a1)
Diffstat (limited to 'source3/libads')
-rw-r--r--source3/libads/dns.c137
1 files changed, 109 insertions, 28 deletions
diff --git a/source3/libads/dns.c b/source3/libads/dns.c
index 96cd54af06..02baec78fb 100644
--- a/source3/libads/dns.c
+++ b/source3/libads/dns.c
@@ -740,21 +740,23 @@ BOOL stored_sitename_changed(const char *realm, const char *sitename)
Query with optional sitename.
********************************************************************/
-NTSTATUS ads_dns_query_internal(TALLOC_CTX *ctx,
- const char *servicename,
- const char *realm,
- const char *sitename,
- struct dns_rr_srv **dclist,
- int *numdcs )
+static NTSTATUS ads_dns_query_internal(TALLOC_CTX *ctx,
+ const char *servicename,
+ const char *dc_pdc_gc_domains,
+ const char *realm,
+ const char *sitename,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
{
char *name;
if (sitename) {
- name = talloc_asprintf(ctx, "%s._tcp.%s._sites.dc._msdcs.%s",
- servicename, sitename, realm );
- } else {
- name = talloc_asprintf(ctx, "%s._tcp.dc._msdcs.%s",
- servicename, realm );
- }
+ name = talloc_asprintf(ctx, "%s._tcp.%s._sites.%s._msdcs.%s",
+ servicename, sitename,
+ dc_pdc_gc_domains, realm);
+ } else {
+ name = talloc_asprintf(ctx, "%s._tcp.%s._msdcs.%s",
+ servicename, dc_pdc_gc_domains, realm);
+ }
if (!name) {
return NT_STATUS_NO_MEMORY;
}
@@ -766,14 +768,14 @@ NTSTATUS ads_dns_query_internal(TALLOC_CTX *ctx,
********************************************************************/
NTSTATUS ads_dns_query_dcs(TALLOC_CTX *ctx,
- const char *realm,
- const char *sitename,
- struct dns_rr_srv **dclist,
- int *numdcs )
+ const char *realm,
+ const char *sitename,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
{
NTSTATUS status;
- status = ads_dns_query_internal(ctx, "_ldap", realm, sitename,
+ status = ads_dns_query_internal(ctx, "_ldap", "dc", realm, sitename,
dclist, numdcs);
if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
@@ -781,10 +783,42 @@ NTSTATUS ads_dns_query_dcs(TALLOC_CTX *ctx,
return status;
}
- if (sitename && !NT_STATUS_IS_OK(status)) {
+ if (sitename &&
+ ((!NT_STATUS_IS_OK(status)) ||
+ (NT_STATUS_IS_OK(status) && (numdcs == 0)))) {
/* Sitename DNS query may have failed. Try without. */
- status = ads_dns_query_internal(ctx, "_ldap", realm, NULL,
- dclist, numdcs);
+ status = ads_dns_query_internal(ctx, "_ldap", "dc", realm,
+ NULL, dclist, numdcs);
+ }
+ return status;
+}
+
+/********************************************************************
+ Query for AD GC's.
+********************************************************************/
+
+NTSTATUS ads_dns_query_gcs(TALLOC_CTX *ctx,
+ const char *realm,
+ const char *sitename,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
+{
+ NTSTATUS status;
+
+ status = ads_dns_query_internal(ctx, "_ldap", "gc", realm, sitename,
+ dclist, numdcs);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_CONNECTION_REFUSED)) {
+ return status;
+ }
+
+ if (sitename &&
+ ((!NT_STATUS_IS_OK(status)) ||
+ (NT_STATUS_IS_OK(status) && (numdcs == 0)))) {
+ /* Sitename DNS query may have failed. Try without. */
+ status = ads_dns_query_internal(ctx, "_ldap", "gc", realm,
+ NULL, dclist, numdcs);
}
return status;
}
@@ -796,25 +830,72 @@ NTSTATUS ads_dns_query_dcs(TALLOC_CTX *ctx,
********************************************************************/
NTSTATUS ads_dns_query_kdcs(TALLOC_CTX *ctx,
- const char *realm,
- const char *sitename,
- struct dns_rr_srv **dclist,
- int *numdcs )
+ const char *dns_forest_name,
+ const char *sitename,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
{
NTSTATUS status;
- status = ads_dns_query_internal(ctx, "_kerberos", realm, sitename,
- dclist, numdcs);
+ status = ads_dns_query_internal(ctx, "_kerberos", "dc",
+ dns_forest_name, sitename, dclist,
+ numdcs);
if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
NT_STATUS_EQUAL(status, NT_STATUS_CONNECTION_REFUSED)) {
return status;
}
- if (sitename && !NT_STATUS_IS_OK(status)) {
+ if (sitename &&
+ ((!NT_STATUS_IS_OK(status)) ||
+ (NT_STATUS_IS_OK(status) && (numdcs == 0)))) {
/* Sitename DNS query may have failed. Try without. */
- status = ads_dns_query_internal(ctx, "_kerberos", realm, NULL,
+ status = ads_dns_query_internal(ctx, "_kerberos", "dc",
+ dns_forest_name, NULL,
dclist, numdcs);
}
return status;
}
+
+/********************************************************************
+ Query for AD PDC. Sitename is obsolete here.
+********************************************************************/
+
+NTSTATUS ads_dns_query_pdc(TALLOC_CTX *ctx,
+ const char *dns_domain_name,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
+{
+ return ads_dns_query_internal(ctx, "_ldap", "pdc", dns_domain_name,
+ NULL, dclist, numdcs);
+}
+
+/********************************************************************
+ Query for AD DC by guid. Sitename is obsolete here.
+********************************************************************/
+
+NTSTATUS ads_dns_query_dcs_guid(TALLOC_CTX *ctx,
+ const char *dns_forest_name,
+ const struct GUID *domain_guid,
+ struct dns_rr_srv **dclist,
+ int *numdcs )
+{
+ /*_ldap._tcp.DomainGuid.domains._msdcs.DnsForestName */
+
+ const char *domains;
+ const char *guid_string;
+
+ guid_string = GUID_string(ctx, domain_guid);
+ if (!guid_string) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* little hack */
+ domains = talloc_asprintf(ctx, "%s.domains", guid_string);
+ if (!domains) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return ads_dns_query_internal(ctx, "_ldap", domains, dns_forest_name,
+ NULL, dclist, numdcs);
+}