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-rw-r--r--source3/libads/ldap.c138
-rw-r--r--source3/nsswitch/winbindd_ads.c94
2 files changed, 202 insertions, 30 deletions
diff --git a/source3/libads/ldap.c b/source3/libads/ldap.c
index ce0341b72c..f9c7820275 100644
--- a/source3/libads/ldap.c
+++ b/source3/libads/ldap.c
@@ -1579,27 +1579,26 @@ char *ads_pull_string(ADS_STRUCT *ads,
* @return Result strings in talloc context
**/
char **ads_pull_strings(ADS_STRUCT *ads,
- TALLOC_CTX *mem_ctx, void *msg, const char *field)
+ TALLOC_CTX *mem_ctx, void *msg, const char *field,
+ size_t *num_values)
{
char **values;
char **ret = NULL;
- int i, n;
+ int i;
values = ldap_get_values(ads->ld, msg, field);
if (!values)
return NULL;
- for (i=0;values[i];i++)
- /* noop */ ;
- n = i;
+ *num_values = ldap_count_values(values);
- ret = talloc(mem_ctx, sizeof(char *) * (n+1));
+ ret = talloc(mem_ctx, sizeof(char *) * (*num_values+1));
if (!ret) {
ldap_value_free(values);
return NULL;
}
- for (i=0;i<n;i++) {
+ for (i=0;i<*num_values;i++) {
if (pull_utf8_talloc(mem_ctx, &ret[i], values[i]) == -1) {
ldap_value_free(values);
return NULL;
@@ -1611,6 +1610,127 @@ char **ads_pull_strings(ADS_STRUCT *ads,
return ret;
}
+/**
+ * pull an array of strings from a ADS result
+ * (handle large multivalue attributes with range retrieval)
+ * @param ads connection to ads server
+ * @param mem_ctx TALLOC_CTX to use for allocating result string
+ * @param msg Results of search
+ * @param field Attribute to retrieve
+ * @param current_strings strings returned by a previous call to this function
+ * @param next_attribute The next query should ask for this attribute
+ * @param num_values How many values did we get this time?
+ * @param more_values Are there more values to get?
+ * @return Result strings in talloc context
+ **/
+char **ads_pull_strings_range(ADS_STRUCT *ads,
+ TALLOC_CTX *mem_ctx,
+ void *msg, const char *field,
+ char **current_strings,
+ const char **next_attribute,
+ size_t *num_strings,
+ BOOL *more_strings)
+{
+ char *attr;
+ char *expected_range_attrib, *range_attr;
+ BerElement *ptr = NULL;
+ char **strings;
+ char **new_strings;
+ size_t num_new_strings;
+ unsigned long int range_start;
+ unsigned long int range_end;
+
+ /* we might have been given the whole lot anyway */
+ if ((strings = ads_pull_strings(ads, mem_ctx, msg, field, num_strings))) {
+ *more_strings = False;
+ return strings;
+ }
+
+ expected_range_attrib = talloc_asprintf(mem_ctx, "%s;Range=", field);
+
+ /* look for Range result */
+ for (attr = ldap_first_attribute(ads->ld, (LDAPMessage *)msg, &ptr);
+ attr;
+ attr = ldap_next_attribute(ads->ld, (LDAPMessage *)msg, ptr)) {
+ /* we ignore the fact that this is utf8, as all attributes are ascii... */
+ if (strnequal(attr, expected_range_attrib, strlen(expected_range_attrib))) {
+ range_attr = attr;
+ break;
+ }
+ ldap_memfree(attr);
+ }
+ if (!attr) {
+ ber_free(ptr, 0);
+ /* nothing here - this feild is just empty */
+ *more_strings = False;
+ return NULL;
+ }
+
+ if (sscanf(&range_attr[strlen(expected_range_attrib)], "%lu-%lu",
+ &range_start, &range_end) == 2) {
+ *more_strings = True;
+ } else {
+ if (sscanf(&range_attr[strlen(expected_range_attrib)], "%lu-*",
+ &range_start) == 1) {
+ *more_strings = False;
+ } else {
+ DEBUG(1, ("ads_pull_strings_range: Cannot parse Range attriubte (%s)\n", range_attr));
+ ldap_memfree(range_attr);
+ *more_strings = False;
+ return NULL;
+ }
+ }
+
+ if ((*num_strings) != range_start) {
+ DEBUG(1, ("ads_pull_strings_range: Range attribute (%s) doesn't start at %u, but at %lu - aborting range retreival\n",
+ range_attr, *num_strings + 1, range_start));
+ ldap_memfree(range_attr);
+ *more_strings = False;
+ return NULL;
+ }
+
+ new_strings = ads_pull_strings(ads, mem_ctx, msg, range_attr, &num_new_strings);
+
+ if (*more_strings && ((*num_strings + num_new_strings) != (range_end + 1))) {
+ DEBUG(1, ("ads_pull_strings_range: Range attribute (%s) tells us we have %lu strings in this bunch, but we only got %lu - aborting range retreival\n",
+ range_attr, (unsigned long int)range_end - range_start + 1, (unsigned long int)num_new_strings));
+ ldap_memfree(range_attr);
+ *more_strings = False;
+ return NULL;
+ }
+
+ strings = talloc_realloc(mem_ctx, current_strings,
+ sizeof(*current_strings) *
+ (*num_strings + num_new_strings));
+
+ if (strings == NULL) {
+ ldap_memfree(range_attr);
+ *more_strings = False;
+ return NULL;
+ }
+
+ memcpy(&strings[*num_strings], new_strings,
+ sizeof(*new_strings) * num_new_strings);
+
+ (*num_strings) += num_new_strings;
+
+ if (*more_strings) {
+ *next_attribute = talloc_asprintf(mem_ctx,
+ "member;range=%d-*",
+ *num_strings);
+
+ if (!*next_attribute) {
+ DEBUG(1, ("talloc_asprintf for next attribute failed!\n"));
+ ldap_memfree(range_attr);
+ *more_strings = False;
+ return NULL;
+ }
+ }
+
+ ldap_memfree(range_attr);
+
+ return strings;
+}
/**
* pull a single uint32 from a ADS result
@@ -1960,6 +2080,7 @@ ADS_STATUS ads_workgroup_name(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, const char *
int i;
void *res;
const char *attrs[] = {"servicePrincipalName", NULL};
+ int num_principals;
(*workgroup) = NULL;
@@ -1972,7 +2093,8 @@ ADS_STATUS ads_workgroup_name(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, const char *
return rc;
}
- principles = ads_pull_strings(ads, mem_ctx, res, "servicePrincipalName");
+ principles = ads_pull_strings(ads, mem_ctx, res,
+ "servicePrincipalName", &num_principals);
ads_msgfree(ads, res);
diff --git a/source3/nsswitch/winbindd_ads.c b/source3/nsswitch/winbindd_ads.c
index 82d0afd03b..e66706c444 100644
--- a/source3/nsswitch/winbindd_ads.c
+++ b/source3/nsswitch/winbindd_ads.c
@@ -688,10 +688,14 @@ static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
char *ldap_exp;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
char *sidstr;
- const char *attrs[] = {"member", NULL};
char **members;
int i, num_members;
fstring sid_string;
+ BOOL more_values;
+ const char **attrs;
+ uint32 first_usn;
+ uint32 current_usn;
+ int num_retries = 0;
DEBUG(10,("ads: lookup_groupmem %s sid=%s\n", domain->name, sid_string_static(group_sid)));
@@ -707,34 +711,80 @@ static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
sidstr = sid_binstring(group_sid);
/* search for all members of the group */
- asprintf(&ldap_exp, "(objectSid=%s)",sidstr);
- rc = ads_search_retry(ads, &res, ldap_exp, attrs);
- free(ldap_exp);
- free(sidstr);
-
- if (!ADS_ERR_OK(rc) || !res) {
- DEBUG(1,("query_user_list ads_search: %s\n", ads_errstr(rc)));
+ if (!(ldap_exp = talloc_asprintf(mem_ctx, "(objectSid=%s)",sidstr))) {
+ SAFE_FREE(sidstr);
+ DEBUG(1, ("ads: lookup_groupmem: tallloc_asprintf for ldap_exp failed!\n"));
+ status = NT_STATUS_NO_MEMORY;
goto done;
}
+ SAFE_FREE(sidstr);
- count = ads_count_replies(ads, res);
- if (count == 0) {
- status = NT_STATUS_OK;
- goto done;
- }
+ members = NULL;
+ num_members = 0;
- members = ads_pull_strings(ads, mem_ctx, res, "member");
- if (!members) {
- /* no members? ok ... */
- status = NT_STATUS_OK;
- goto done;
- }
+ attrs = talloc(mem_ctx, 3 * sizeof(*attrs));
+ attrs[1] = talloc_strdup(mem_ctx, "usnChanged");
+ attrs[2] = NULL;
+
+ do {
+ if (num_members == 0)
+ attrs[0] = talloc_strdup(mem_ctx, "member");
+ DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs[0], attrs[1]));
+
+ rc = ads_search_retry(ads, &res, ldap_exp, attrs);
+
+ if (!ADS_ERR_OK(rc) || !res) {
+ DEBUG(1,("ads: lookup_groupmem ads_search: %s\n",
+ ads_errstr(rc)));
+ status = ads_ntstatus(rc);
+ goto done;
+ }
+
+ count = ads_count_replies(ads, res);
+ if (count == 0)
+ break;
+
+ if (num_members == 0) {
+ if (!ads_pull_uint32(ads, res, "usnChanged", &first_usn)) {
+ DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
+ goto done;
+ }
+ }
+
+ if (!ads_pull_uint32(ads, res, "usnChanged", &current_usn)) {
+ DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
+ goto done;
+ }
+
+ if (first_usn != current_usn) {
+ DEBUG(5, ("ads: lookup_groupmem USN on this record changed - restarting search\n"));
+ if (num_retries < 5) {
+ num_retries++;
+ num_members = 0;
+ continue;
+ } else {
+ DEBUG(5, ("ads: lookup_groupmem USN on this record changed - restarted search too many times, aborting!\n"));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
+ }
+
+ members = ads_pull_strings_range(ads, mem_ctx, res,
+ "member",
+ members,
+ &attrs[0],
+ &num_members,
+ &more_values);
+
+ if ((members == NULL) || (num_members == 0))
+ break;
+
+ } while (more_values);
+
/* now we need to turn a list of members into rids, names and name types
the problem is that the members are in the form of distinguised names
*/
- for (i=0;members[i];i++) /* noop */ ;
- num_members = i;
(*sid_mem) = talloc_zero(mem_ctx, sizeof(**sid_mem) * num_members);
(*name_types) = talloc_zero(mem_ctx, sizeof(**name_types) * num_members);
@@ -761,13 +811,13 @@ static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
status = NT_STATUS_OK;
DEBUG(3,("ads lookup_groupmem for sid=%s\n", sid_to_string(sid_string, group_sid)));
done:
+
if (res)
ads_msgfree(ads, res);
return status;
}
-
/* find the sequence number for a domain */
static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
{
generated by cgit (git 2.34.1) at 2024-07-03 04:30:34 +0000