1 files changed, 23 insertions, 0 deletions
diff --git a/network/in_addr-show.c b/network/in_addr-show.c
new file mode 100644
index 0000000..e8dd01b
--- /dev/null
+++ b/network/in_addr-show.c
@@ -0,0 +1,23 @@
+#include <arpa/inet.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+int main (int argc, char *argv[]) {
+	char ipstr[INET_ADDRSTRLEN];
+	unsigned long ipbin;
+
+	for (int i = 1; i < argc; i++) {
+		if (sscanf (argv[i], "%lx", &ipbin) <= 0) {
+			return 1;
+		}
+		struct in_addr ipaddr = { .s_addr = ipbin };
+		if (inet_ntop (AF_INET, &ipaddr, ipstr, INET_ADDRSTRLEN) == NULL) {
+			return 2;
+		}
+		puts (ipstr);
+	}
+
+	return 0;
+}