1 files changed, 103 insertions, 0 deletions
diff --git a/src/endpoint.c b/src/endpoint.c
new file mode 100644
index 0000000..da37fe3
--- /dev/null
+++ b/src/endpoint.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2016-2021, OARC, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "endpoint.h"
+#include "args.h"
+#include "iaddr.h"
+
+void endpoint_arg(endpoint_list* list, const char* arg)
+{
+    struct addrinfo* ai;
+    iaddr            ia;
+    void*            p;
+
+    if (inet_pton(AF_INET6, arg, &ia.u.a6) > 0) {
+        ia.af = AF_INET6;
+        endpoint_add(list, ia);
+    } else if (inet_pton(AF_INET, arg, &ia.u.a4) > 0) {
+        ia.af = AF_INET;
+        endpoint_add(list, ia);
+    } else if (getaddrinfo(arg, NULL, NULL, &ai) == 0) {
+        struct addrinfo* a;
+
+        for (a = ai; a != NULL; a = a->ai_next) {
+            if (a->ai_socktype != SOCK_DGRAM)
+                continue;
+            switch (a->ai_family) {
+            case PF_INET:
+                ia.af = AF_INET;
+                p     = &((struct sockaddr_in*)a->ai_addr)
+                         ->sin_addr;
+                memcpy(&ia.u.a4, p, sizeof ia.u.a4);
+                break;
+            case PF_INET6:
+                ia.af = AF_INET6;
+                p     = &((struct sockaddr_in6*)a->ai_addr)
+                         ->sin6_addr;
+                memcpy(&ia.u.a6, p, sizeof ia.u.a6);
+                break;
+            default:
+                continue;
+            }
+            endpoint_add(list, ia);
+        }
+        freeaddrinfo(ai);
+    } else
+        usage("invalid host address");
+}
+
+void endpoint_add(endpoint_list* list, iaddr ia)
+{
+    endpoint_ptr ep;
+
+    ep = calloc(1, sizeof *ep);
+    assert(ep != NULL);
+    INIT_LINK(ep, link);
+    ep->ia = ia;
+    APPEND(*list, ep, link);
+}
+
+int ep_present(const endpoint_list* list, iaddr ia)
+{
+    endpoint_ptr ep;
+
+    for (ep = HEAD(*list);
+         ep != NULL;
+         ep = NEXT(ep, link))
+        if (ia_equal(ia, ep->ia))
+            return TRUE;
+    return (FALSE);
+}