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Diffstat (limited to 'src/get_ipv6_addr.c')
-rw-r--r--src/get_ipv6_addr.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/src/get_ipv6_addr.c b/src/get_ipv6_addr.c
deleted file mode 100644
index 341b5ba..0000000
--- a/src/get_ipv6_addr.c
+++ /dev/null
@@ -1,79 +0,0 @@
-// vim:ts=8:expandtab
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <string.h>
-#include <arpa/inet.h>
-
-/*
- * Returns the IPv6 address with which you have connectivity at the moment.
- *
- */
-const char *get_ipv6_addr() {
- static char buf[INET6_ADDRSTRLEN+1];
- struct addrinfo hints;
- struct addrinfo *result, *resp;
- int fd;
-
- memset(&hints, 0, sizeof(struct addrinfo));
- hints.ai_family = AF_INET6;
-
- /* We resolve the K root server to get a public IPv6 address. You can
- * replace this with any other host which has an AAAA record, but the
- * K root server is a pretty safe bet. */
- if (getaddrinfo("k.root-servers.net", "domain", &hints, &result) != 0) {
- /* We don’t display the error here because most
- * likely, there just is no connectivity.
- * Thus, don’t spam the user’s console. */
- return "no IPv6";
- }
-
- for (resp = result; resp != NULL; resp = resp->ai_next) {
- if ((fd = socket(resp->ai_family, SOCK_DGRAM, 0)) == -1) {
- perror("socket()");
- continue;
- }
-
- /* Since the socket was created with SOCK_DGRAM, this is
- * actually not establishing a connection or generating
- * any other network traffic. Instead, as a side-effect,
- * it saves the local address with which packets would
- * be sent to the destination. */
- if (connect(fd, resp->ai_addr, resp->ai_addrlen) == -1) {
- /* We don’t display the error here because most
- * likely, there just is no IPv6 connectivity.
- * Thus, don’t spam the user’s console but just
- * try the next address. */
- (void)close(fd);
- continue;
- }
-
- struct sockaddr_storage local;
- socklen_t local_len = sizeof(struct sockaddr_storage);
- if (getsockname(fd, (struct sockaddr*)&local, &local_len) == -1) {
- perror("getsockname()");
- (void)close(fd);
- return "no IPv6";
- }
-
- (void)close(fd);
-
- memset(buf, 0, INET6_ADDRSTRLEN + 1);
- int ret;
- if ((ret = getnameinfo((struct sockaddr*)&local, local_len,
- buf, sizeof(buf), NULL, 0,
- NI_NUMERICHOST)) != 0) {
- fprintf(stderr, "getnameinfo(): %s\n", gai_strerror(ret));
- return "no IPv6";
- }
-
- free(result);
- return buf;
- }
-
- free(result);
- return "no IPv6";
-}