glib-aux: add nm_strv_is_same_unordered() helper

src/libnm-glib-aux/nm-shared-utils.c

@@ -2336,6 +2336,52 @@ nm_strv_has_duplicate(const char *const *strv, gssize len, gboolean is_sorted)
     return FALSE;
 }
 
+gboolean
+nm_strv_is_same_unordered(const char *const *strv1,
+                          gssize             len1,
+                          const char *const *strv2,
+                          gssize             len2)
+{
+    gs_free const char **ss1_free = NULL;
+    gs_free const char **ss2_free = NULL;
+    gsize                l2;
+    gsize                l;
+    gsize                i;
+
+    if (len1 < 0)
+        l = NM_PTRARRAY_LEN(strv1);
+    else
+        l = (gsize) len1;
+
+    if (len2 < 0)
+        l2 = NM_PTRARRAY_LEN(strv2);
+    else
+        l2 = (gsize) len2;
+
+    if (l != l2)
+        return FALSE;
+
+    if (l == 0) {
+        /* An empty array. We treat (NULL, -1), (NULL, 0) and ([...], 0)
+         * all the same. */
+        return TRUE;
+    }
+
+    if (l > 1) {
+        strv1 = nm_memdup_maybe_a(300, strv1, sizeof(char *) * l, &ss1_free);
+        strv2 = nm_memdup_maybe_a(300, strv2, sizeof(char *) * l2, &ss2_free);
+        _nm_utils_strv_sort((const char **) strv1, l);
+        _nm_utils_strv_sort((const char **) strv2, l);
+    }
+
+    for (i = 0; i < l; i++) {
+        if (!nm_streq0(strv1[i], strv2[i]))
+            return FALSE;
+    }
+
+    return TRUE;
+}
+
 char **
 _nm_utils_strv_cleanup(char **  strv,
                        gboolean strip_whitespace,

src/libnm-glib-aux/nm-shared-utils.h

@@ -746,6 +746,11 @@ char **_nm_utils_strv_cleanup(char **  strv,
                               gboolean skip_empty,
                               gboolean skip_repeated);
 
+gboolean nm_strv_is_same_unordered(const char *const *strv1,
+                                   gssize             len1,
+                                   const char *const *strv2,
+                                   gssize             len2);
+
 /*****************************************************************************/
 
 static inline gpointer