ip addr helpers

src/net.c

@@ -0,0 +1,41 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#include <errno.h>
+#include <arpa/inet.h>
+
+#include "export.h"
+#include "public/net.h"
+
+EXPORT int tlsl_ip_addr_parse(const char *s, struct tlsl_ip_addr *out) {
+  if (inet_pton(AF_INET, s, &out->v4) == 1) {
+    out->l3proto = TLSL_L3PROTO_IPV4;
+    return 0;
+  }
+  if (inet_pton(AF_INET6, s, &out->v6) == 1) {
+    out->l3proto = TLSL_L3PROTO_IPV6;
+    return 0;
+  }
+  return 1;
+}
+
+EXPORT str_buf_t tlsl_ip_addr_fmt(const struct tlsl_ip_addr *a) {
+  char buf[INET6_ADDRSTRLEN] = { 0 };
+  const char *res;
+
+  switch (a->l3proto) {
+  case TLSL_L3PROTO_IPV4:
+    res = inet_ntop(AF_INET, &a->v4, buf, sizeof(buf));
+    break;
+  case TLSL_L3PROTO_IPV6:
+    res = inet_ntop(AF_INET6, &a->v6, buf, sizeof(buf));
+    break;
+  default:
+    errno = EINVAL;
+    return SBUF_NULL;
+  }
+  if (!res)
+    return SBUF_NULL;
+  return sbuf_from_sview(sview_from_cstr_unbounded(buf));
+}