startHEADmaster

1 files changed, 39 insertions, 0 deletions

diff --git a/ip.c b/ip.c
new file mode 100644
index 0000000..da99afd
--- /dev/null
+++ b/ip.c
@@ -0,0 +1,39 @@
+#include <sys/types.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include "ip.h"
+#define HNAME "rskrf.ru"
+static struct addrinfo hints;
+static struct addrinfo *result, *rp;
+static char ip[INET_ADDRSTRLEN];
+static int s;
+char *get_ip(size_t len)
+{
+	if (len != INET_ADDRSTRLEN) {
+		fprintf(stderr, "get_ip: len must be %d\n", INET_ADDRSTRLEN);
+		exit(EXIT_FAILURE);
+	}
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_INET;
+	hints.ai_flags = AI_ADDRCONFIG;	/* ret IPv4 only if system has IPv4 addr */
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_protocol = IPPROTO_TCP;
+	s = getaddrinfo(HNAME, "https", &hints, &result);
+	if (s != 0) {
+		fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
+		exit(EXIT_FAILURE);
+	}
+	for (rp = result; rp != NULL; rp = rp->ai_next) {
+		inet_ntop(AF_INET,
+			  &((struct sockaddr_in *)(rp->ai_addr))->sin_addr,
+			  ip, INET_ADDRSTRLEN);
+	}
+	freeaddrinfo(result);
+	return ip;
+}