wolfssl-w32/IDE/VS-AZURE-SPHERE/shared/util.h

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#ifndef _UTIL_H_
#define _UTIL_H_
#include <stdio.h>
#include <wolfssl/ssl.h>
#include <ifaddrs.h>
#include <applibs/log.h>
#define _GNU_SOURCE /* defines NI_NUMERICHOST */
#ifndef NI_MAXHOST
#define NI_MAXHOST 256
#endif
static void util_Cleanup(int sockfd, WOLFSSL_CTX* ctx, WOLFSSL* ssl)
{
wolfSSL_free(ssl); /* Free the wolfSSL object */
wolfSSL_CTX_free(ctx); /* Free the wolfSSL context object */
wolfSSL_Cleanup(); /* Cleanup the wolfSSL environment */
close(sockfd); /* Close the connection to the server */
}
/* Displays each AF_INET interface and it's IP Address
* Return: WOLFSSL_SUCCESS if print is successful else WOLFSSL_FAILURE
*/
static int util_PrintIfAddr(void)
{
char host[NI_MAXHOST];
struct ifaddrs* ifaddr, * nxt;
int family, info, n;
/* Get a linked list of 'struct ifaddrs*' */
if (getifaddrs(&ifaddr) != 0) {
fprintf(stderr, "ERROR: Getting network interface and IP address");
return WOLFSSL_FAILURE;
}
printf("\nInterface IP Address\n");
/* Traverse ifaddr linked list using nxt */
for (nxt = ifaddr; nxt != NULL; nxt = nxt->ifa_next) {
if (nxt->ifa_addr == NULL)
continue;
family = nxt->ifa_addr->sa_family;
/* Display the address of each AF_INET* interface */
if (family == AF_INET) {
info = getnameinfo(nxt->ifa_addr, sizeof(struct sockaddr_in),
host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (info != 0) {
fprintf(stderr, "Failed to getnameinfo");
freeifaddrs(ifaddr);
return WOLFSSL_FAILURE;
}
/* Determine amount of space, n, to justify IP Address */
n = (int)strlen("Interface ") - (int)strlen(nxt->ifa_name);
n = (n > 0) ? n : 1; /* Set space to 1 if n is negative */
printf("%s %*c%s>\n", nxt->ifa_name, n, '<', host);
}
}
printf("\n");
freeifaddrs(ifaddr);
return WOLFSSL_SUCCESS;
}
#endif