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-rw-r--r--src/db/sysdb.c102
-rw-r--r--src/db/sysdb.h4
2 files changed, 106 insertions, 0 deletions
diff --git a/src/db/sysdb.c b/src/db/sysdb.c
index 34c65dfab..ef9d0a237 100644
--- a/src/db/sysdb.c
+++ b/src/db/sysdb.c
@@ -2154,3 +2154,105 @@ done:
talloc_free(tmp_ctx);
return ret;
}
+
+errno_t sysdb_attrs_primary_name(struct sysdb_ctx *sysdb,
+ struct sysdb_attrs *attrs,
+ const char *ldap_attr,
+ const char **_primary)
+{
+ errno_t ret;
+ char *rdn_attr = NULL;
+ char *rdn_val = NULL;
+ struct ldb_message_element *sysdb_name_el;
+ struct ldb_message_element *orig_dn_el;
+ size_t i;
+ TALLOC_CTX *tmpctx = NULL;
+
+ tmpctx = talloc_new(NULL);
+ if (!tmpctx) {
+ return ENOMEM;
+ }
+
+ ret = sysdb_attrs_get_el(attrs,
+ SYSDB_NAME,
+ &sysdb_name_el);
+ if (sysdb_name_el->num_values == 0) {
+ ret = EINVAL;
+ goto done;
+ }
+
+ if (sysdb_name_el->num_values == 1) {
+ /* Entry contains only one name. Just return that */
+ *_primary = (const char *)sysdb_name_el->values[0].data;
+ ret = EOK;
+ goto done;
+ }
+
+ /* Multiple values for name. Check whether one matches the RDN */
+
+ ret = sysdb_attrs_get_el(attrs, SYSDB_ORIG_DN, &orig_dn_el);
+ if (ret) {
+ goto done;
+ }
+ if (orig_dn_el->num_values == 0) {
+ DEBUG(7, ("Original DN is not available.\n"));
+ } else if (orig_dn_el->num_values == 1) {
+ ret = sysdb_get_rdn(sysdb, tmpctx,
+ (const char *) orig_dn_el->values[0].data,
+ &rdn_attr,
+ &rdn_val);
+ if (ret != EOK) {
+ DEBUG(1, ("Could not get rdn from [%s]\n",
+ (const char *) orig_dn_el->values[0].data));
+ goto done;
+ }
+ } else {
+ DEBUG(1, ("Should not have more than one origDN\n"));
+ ret = EINVAL;
+ goto done;
+ }
+
+ /* First check whether the attribute name matches */
+ DEBUG(8, ("Comparing attribute names [%s] and [%s]\n",
+ rdn_attr, ldap_attr));
+ if (strcasecmp(rdn_attr, ldap_attr) != 0) {
+ /* Multiple entries, and the RDN attribute doesn't match.
+ * We have no way of resolving this deterministically,
+ * so we'll punt.
+ */
+ DEBUG(1, ("Cannot save entry. It has multiple names and the RDN "
+ "attribute does not match\n"));
+ ret = EINVAL;
+ goto done;
+ }
+
+ for (i = 0; i < sysdb_name_el->num_values; i++) {
+ if (strcasecmp(rdn_val,
+ (const char *)sysdb_name_el->values[i].data) == 0) {
+ /* This name matches the RDN. Use it */
+ break;
+ }
+ }
+ if (i < sysdb_name_el->num_values) {
+ /* Match was found */
+ *_primary = (const char *)sysdb_name_el->values[i].data;
+ } else {
+ /* If we can't match the name to the RDN, we just have to
+ * throw up our hands. There's no deterministic way to
+ * decide which name is correct.
+ */
+ DEBUG(1, ("Cannot save entry. Unable to determine groupname\n"));
+ ret = EINVAL;
+ goto done;
+ }
+
+ ret = EOK;
+
+done:
+ if (ret != EOK) {
+ DEBUG(1, ("Could not determine primary name: [%d][%s]\n",
+ ret, strerror(ret)));
+ }
+ talloc_free(tmpctx);
+ return ret;
+}
diff --git a/src/db/sysdb.h b/src/db/sysdb.h
index caef6163e..e98426551 100644
--- a/src/db/sysdb.h
+++ b/src/db/sysdb.h
@@ -215,6 +215,10 @@ int sysdb_attrs_users_from_ldb_vals(struct sysdb_attrs *attrs,
const char *domain,
struct ldb_val *values,
int num_values);
+errno_t sysdb_attrs_primary_name(struct sysdb_ctx *sysdb,
+ struct sysdb_attrs *attrs,
+ const char *ldap_attr,
+ const char **_primary);
/* convert an ldb error into an errno error */
int sysdb_error_to_errno(int ldberr);