libcli/security: Add sids_contains_sid()

[samba.git] / libcli / security / util_sid.c

diff --git a/libcli/security/util_sid.c b/libcli/security/util_sid.c
index b3408b37a4690942b857ba8aaa84363d4f4d235c..8b548199261a87db983552e654a7b9651f712e74 100644 (file)
--- a/libcli/security/util_sid.c
+++ b/libcli/security/util_sid.c
@@ -511,6 +511,28 @@ bool is_null_sid(const struct dom_sid *sid)
        return dom_sid_equal(sid, &null_sid);
 }
 
+/**
+ * Return true if an array of SIDs contains a certain SID.
+ *
+ * @param [in] sids    The SID array.
+ * @param [in] num_sids        The size of the SID array.
+ * @param [in] sid     The SID in question.
+ * @returns true if the array contains the SID.
+ */
+bool sids_contains_sid(const struct dom_sid *sids,
+                      const uint32_t num_sids,
+                      const struct dom_sid *sid)
+{
+       uint32_t i;
+
+       for (i = 0; i < num_sids; i++) {
+               if (dom_sid_equal(&sids[i], sid)) {
+                       return true;
+               }
+       }
+       return false;
+}
+
 /**
  * Return true if an array of auth_SidAttr contains a certain SID with certain
  * attributes.