1 files changed, 32 insertions, 0 deletions
diff --git a/Semestr 4/sieci/pracownia2/router/router_addr.c b/Semestr 4/sieci/pracownia2/router/router_addr.c
new file mode 100644
index 0000000..1e4c086
--- /dev/null
+++ b/Semestr 4/sieci/pracownia2/router/router_addr.c
@@ -0,0 +1,32 @@
+#include "router_addr.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+struct in_addr get_broadcast_address(struct router_addr ra) {
+  struct in_addr result = ra.addr;
+  /* bitshift by more than 31 is UB */
+  if (ra.netmask < 32) {
+    result.s_addr |= ~((1<<ra.netmask) - 1);
+  }
+  return result;
+}
+
+void pretty_print(struct router_addr ra) {
+  char ip_addr[20];
+  inet_ntop(AF_INET, &ra.addr, ip_addr, sizeof(ip_addr));
+  printf("%s/%d distance %d\n", ip_addr, ra.netmask, ra.distance);
+}
+
+/* converts string of IP with netmask in CIDR notation to router_addr */
+struct router_addr stora(char *str) {
+  struct router_addr  result;
+  char                addr[20];
+  size_t              ip_preffix = strcspn(str, "/");
+  
+  strncpy(addr, str, strlen(str));
+  addr[ip_preffix] = 0;
+  inet_pton(AF_INET, addr, &(result.addr));
+  result.netmask = atoi(str + ip_preffix + 1);
+  return result;
+}
+\ No newline at end of file