misc: Add ssh_match_group().

src/misc.c

@@ -952,6 +952,33 @@ int ssh_timeout_update(struct ssh_timestamp *ts, int timeout){
   ret = timeout - ms;
   return ret >= 0 ? ret: 0;
 }
+
+
+int ssh_match_group(const char *group, const char *object)
+{
+    const char *a;
+    const char *z;
+
+    z = group;
+    do {
+        a = strchr(z, ',');
+        if (a == NULL) {
+            if (strcmp(z, object) == 0) {
+                return 1;
+            }
+            return 0;
+        } else {
+            if (strncmp(z, object, a - z) == 0) {
+                return 1;
+            }
+        }
+        z = a + 1;
+    } while(1);
+
+    /* not reached */
+    return 0;
+}
+
 /** @} */
 
 /* vim: set ts=4 sw=4 et cindent: */