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-rw-r--r--demos/ssl/cli.cpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/demos/ssl/cli.cpp b/demos/ssl/cli.cpp
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+++ b/demos/ssl/cli.cpp
@@ -0,0 +1,102 @@
+/* cli.cpp - Minimal ssleay client for Unix
+ 30.9.1996, Sampo Kellomaki <sampo@iki.fi> */
+
+#include <stdio.h>
+#include <memory.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include "rsa.h" /* SSLeay stuff */
+#include "crypto.h"
+#include "x509.h"
+#include "pem.h"
+#include "ssl.h"
+#include "err.h"
+
+#define CHK_NULL(x) if ((x)==NULL) exit (1)
+#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }
+#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(2); }
+
+void main ()
+{
+ int err;
+ int sd;
+ struct sockaddr_in sa;
+ SSL_CTX* ctx;
+ SSL* ssl;
+ X509* server_cert;
+ char* str;
+ char buf [4096];
+
+ SSL_load_error_strings();
+ ctx = SSL_CTX_new (); CHK_NULL(ctx);
+
+ /* ----------------------------------------------- */
+ /* Create a socket and connect to server using normal socket calls. */
+
+ sd = socket (AF_INET, SOCK_STREAM, 0); CHK_ERR(sd, "socket");
+
+ memset (&sa, '\0', sizeof(sa));
+ sa.sin_family = AF_INET;
+ sa.sin_addr.s_addr = inet_addr ("127.0.0.1"); /* Server IP */
+ sa.sin_port = htons (1111); /* Server Port number */
+
+ err = connect(sd, (struct sockaddr*) &sa,
+ sizeof(sa)); CHK_ERR(err, "connect");
+
+ /* ----------------------------------------------- */
+ /* Now we have TCP conncetion. Start SSL negotiation. */
+
+ ssl = SSL_new (ctx); CHK_NULL(ssl);
+ SSL_set_fd (ssl, sd);
+ err = SSL_connect (ssl); CHK_SSL(err);
+
+ /* Following two steps are optional and not required for
+ data exchange to be successful. */
+
+ /* Get the cipher - opt */
+
+ printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
+
+ /* Get server's certificate (note: beware of dynamic allocation) - opt */
+
+ server_cert = SSL_get_peer_certificate (ssl); CHK_NULL(server_cert);
+ printf ("Server certificate:\n");
+
+ str = X509_NAME_oneline (X509_get_subject_name (server_cert));
+ CHK_NULL(str);
+ printf ("\t subject: %s\n", str);
+ Free (str);
+
+ str = X509_NAME_oneline (X509_get_issuer_name (server_cert));
+ CHK_NULL(str);
+ printf ("\t issuer: %s\n", str);
+ Free (str);
+
+ /* We could do all sorts of certificate verification stuff here before
+ deallocating the certificate. */
+
+ X509_free (server_cert);
+
+ /* --------------------------------------------------- */
+ /* DATA EXCHANGE - Send a message and receive a reply. */
+
+ err = SSL_write (ssl, "Hello World!", strlen("Hello World!")); CHK_SSL(err);
+
+ shutdown (sd, 1); /* Half close, send EOF to server. */
+
+ err = SSL_read (ssl, buf, sizeof(buf) - 1); CHK_SSL(err);
+ buf[err] = '\0';
+ printf ("Got %d chars:'%s'\n", err, buf);
+
+ /* Clean up. */
+
+ close (sd);
+ SSL_free (ssl);
+ SSL_CTX_free (ctx);
+}
+/* EOF - cli.cpp */