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Add function to print network interface and IP Address

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This commit is contained in:
Aaron Jense
2019-09-18 19:57:19 +01:00
parent 4ef8f53c9e
commit bdbe0943cf
4 changed files with 100 additions and 44 deletions
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28
IDE/VS-AZURE-SPHERE/client/client.c
View File

@ -31,23 +31,17 @@
#include <netinet/in.h>
#include <unistd.h>
/* utility functions shared between client and server */
#include <shared/util.h>
/* wolfSSL */
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/ssl.h>
#include <wolfssl/certs_test.h>
/* Azure Sphere */
#include <applibs/log.h>
#include <applibs/networking.h>
static void client_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 */
}
int main(int argc, char** argv)
{
bool isNetworkingReady = false;
@ -60,6 +54,8 @@ int main(int argc, char** argv)
WOLFSSL_CTX* ctx = NULL;
WOLFSSL* ssl = NULL;
util_PrintIfAddr();
/* Check if the Azure Sphere Dev Board has network connectivity. */
if ((Networking_IsNetworkingReady(&isNetworkingReady) < 0) || !isNetworkingReady) {
fprintf(stderr, "ERROR: network is not up.\n");
@ -79,7 +75,7 @@ int main(int argc, char** argv)
ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method());
if (ctx == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
@ -87,14 +83,14 @@ int main(int argc, char** argv)
ret = wolfSSL_CTX_load_verify_buffer(ctx, CERT, SIZEOF_CERT, WOLFSSL_FILETYPE_ASN1);
if (ret != SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the buffer.\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
/* Create a WOLFSSL object */
if ((ssl = wolfSSL_new(ctx)) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
@ -104,7 +100,7 @@ int main(int argc, char** argv)
/* Connect to wolfSSL on the server side */
if (wolfSSL_connect(ssl) != SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to connect to wolfSSL\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
@ -115,7 +111,7 @@ int main(int argc, char** argv)
/* Send the message to the server */
if (wolfSSL_write(ssl, msg, (int)len) != len) {
fprintf(stderr, "ERROR: failed to write\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
@ -123,7 +119,7 @@ int main(int argc, char** argv)
memset(buff, 0, sizeof(buff));
if (wolfSSL_read(ssl, buff, sizeof(buff) - 1) == -1) {
fprintf(stderr, "ERROR: failed to read\n");
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return -1;
}
@ -131,6 +127,6 @@ int main(int argc, char** argv)
printf("Server Reply: %s\n", buff);
/* Cleanup and return */
client_Cleanup(sockfd,ctx,ssl);
util_Cleanup(sockfd,ctx,ssl);
return 0; /* Return reporting a success */
}

43
IDE/VS-AZURE-SPHERE/server/server.c
View File

@ -31,6 +31,9 @@
#include <netinet/in.h>
#include <unistd.h>
/* <shared/util.h> includes */
#include <shared/util.h>
/* wolfSSL */
#include <wolfssl/ssl.h>
#include <wolfssl/certs_test.h>
@ -39,20 +42,12 @@
#include <applibs/log.h>
#include <applibs/networking.h>
#define DEFAULT_PORT 11111
#define BIND_PORT 11111
#define CERT_BUF server_cert_der_2048
#define SIZEOF_CERT_BUF sizeof_server_cert_der_2048
#define KEY_BUF server_key_der_2048
#define SIZEOF_KEY_BUF sizeof_server_key_der_2048
static void server_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 socket listening for clients */
}
int main(void)
{
bool isNetworkingReady = false;
@ -71,9 +66,11 @@ int main(void)
WOLFSSL_CTX* ctx = NULL;
WOLFSSL* ssl = NULL;
util_PrintIfAddr();
/* Check if the Azure Sphere Dev Board has network connectivity. */
if ((Networking_IsNetworkingReady(&isNetworkingReady) < 0) || !isNetworkingReady) {
Log_Debug("\nNetwork is not up.\n");
fprintf(stderr,"Error: Network is not up.\n");
return -1;
}
@ -85,14 +82,14 @@ int main(void)
* 0 means choose the default protocol. */
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "ERROR: failed to create the socket\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
/* Create and initialize WOLFSSL_CTX */
if ((ctx = wolfSSL_CTX_new(wolfTLSv1_2_server_method())) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -101,7 +98,7 @@ int main(void)
!= SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
CERT_BUF);
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -110,7 +107,7 @@ int main(void)
!= SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
KEY_BUF);
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -119,20 +116,20 @@ int main(void)
/* Fill in the server address */
servAddr.sin_family = AF_INET; /* using IPv4 */
servAddr.sin_port = htons(DEFAULT_PORT); /* on DEFAULT_PORT */
servAddr.sin_port = htons(BIND_PORT); /* on BIND_PORT */
servAddr.sin_addr.s_addr = INADDR_ANY; /* from anywhere */
/* Bind the server socket to our port */
if (bind(sockfd, (struct sockaddr*)&servAddr, sizeof(servAddr)) == -1) {
fprintf(stderr, "ERROR: failed to bind\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
/* Listen for a new connection, allow 5 pending connections */
if (listen(sockfd, 5) == -1) {
fprintf(stderr, "ERROR: failed to listen\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -144,14 +141,14 @@ int main(void)
if ((connd = accept(sockfd, (struct sockaddr*)&clientAddr, &size))
== -1) {
fprintf(stderr, "ERROR: failed to accept the connection\n\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
/* Create a WOLFSSL object */
if ((ssl = wolfSSL_new(ctx)) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -163,7 +160,7 @@ int main(void)
if (ret != SSL_SUCCESS) {
fprintf(stderr, "wolfSSL_accept error = %d\n",
wolfSSL_get_error(ssl, ret));
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -173,7 +170,7 @@ int main(void)
memset(buff, 0, sizeof(buff));
if (wolfSSL_read(ssl, buff, sizeof(buff)-1) == -1) {
fprintf(stderr, "ERROR: failed to read\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -194,7 +191,7 @@ int main(void)
/* Reply back to the client */
if (wolfSSL_write(ssl, buff, (int)len) != len) {
fprintf(stderr, "ERROR: failed to write\n");
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return -1;
}
@ -206,6 +203,6 @@ int main(void)
printf("Shutdown complete\n");
/* Cleanup and return */
server_Cleanup(sockfd, ctx, ssl);
util_Cleanup(sockfd, ctx, ssl);
return 0; /* Return reporting a success */
}

61
IDE/VS-AZURE-SPHERE/shared/util.h Normal file
View File

@ -0,0 +1,61 @@
#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

12
IDE/VS-AZURE-SPHERE/user_settings.h
View File

@ -7,17 +7,21 @@
#ifndef SERVER_IP
#define SERVER_IP "192.168.1.200" /* Local Test Server IP */
#endif
#ifndef DEFAULT_PORT
#define DEFAULT_PORT 11111
#endif
#define CERT ca_cert_der_2048
#define SIZEOF_CERT sizeof_ca_cert_der_2048
#define DEFAULT_PORT 11111
static const char msg[] = "Are you listening wolfSSL Server?";
#else
#ifndef SERVER_IP
#define SERVER_IP "www.wolfssl.com"
#endif
#ifndef DEFAULT_PORT
#define DEFAULT_PORT 443
#endif
#define CERT wolfssl_website_root_ca
#define SIZEOF_CERT sizeof_wolfssl_website_root_ca
#define DEFAULT_PORT 443
static const char msg[] = "GET /index.html HTTP/1.1\r\n\r\n";
#endif
@ -53,9 +57,6 @@
#define USE_CERT_BUFFERS_2048
#define USE_CERT_BUFFERS_256
/* Redirect printf to Log_Debug */
#define printf Log_Debug
/* OS */
#define SINGLE_THREADED
@ -63,6 +64,7 @@
#define NO_FILESYSTEM
/* Debug */
#define printf Log_Debug
#define WOLFIO_DEBUG
#endif /* _USER_SETTINGS_H_ */