Demo code for SSL_CONF API

Two example programs one for command line argument processing and
one for configuration file processing.

1 files changed, 115 insertions, 0 deletions

diff --git a/demos/bio/client-arg.c b/demos/bio/client-arg.c
new file mode 100644
index 0000000000..f0cb9aba90
--- /dev/null
+++ b/demos/bio/client-arg.c
@@ -0,0 +1,115 @@
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+int main(int argc, char **argv)
+	{
+	BIO *sbio = NULL, *out = NULL;
+	int len;
+	char tmpbuf[1024];
+	SSL_CTX *ctx;
+	SSL_CONF_CTX *cctx;
+	SSL *ssl;
+	char **args = argv + 1;
+	const char *connect_str = "localhost:4433";
+	int nargs = argc - 1;
+
+	ERR_load_crypto_strings();
+	ERR_load_SSL_strings();
+	SSL_library_init();
+
+	ctx = SSL_CTX_new(SSLv23_client_method());
+	cctx = SSL_CONF_CTX_new();
+	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
+	SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
+	while(*args && **args == '-')
+		{
+		int rv;
+		/* Parse standard arguments */
+		rv = SSL_CONF_cmd_argv(cctx, &nargs, &args);
+		if (rv == -3)
+			{
+			fprintf(stderr, "Missing argument for %s\n", *args);
+			goto end;
+			}
+		if (rv < 0)
+			{
+			fprintf(stderr, "Error in command %s\n", *args);
+			ERR_print_errors_fp(stderr);
+			goto end;
+			}
+		/* If rv > 0 we processed something so proceed to next arg */
+		if (rv > 0)
+			continue;
+		/* Otherwise application specific argument processing */
+		if (!strcmp(*args, "-connect"))
+			{
+			connect_str = args[1];
+			if (connect_str == NULL)
+				{
+				fprintf(stderr, "Missing -connect argument\n");
+				goto end;
+				}
+			args += 2;
+			nargs -= 2;
+			continue;
+			}
+		else
+			{
+			fprintf(stderr, "Unknown argument %s\n", *args);
+			goto end;
+			}
+		}
+
+	/* We'd normally set some stuff like the verify paths and
+	* mode here because as things stand this will connect to
+	* any server whose certificate is signed by any CA.
+	 */
+
+	sbio = BIO_new_ssl_connect(ctx);
+
+	BIO_get_ssl(sbio, &ssl);
+
+	if(!ssl)
+		{
+		fprintf(stderr, "Can't locate SSL pointer\n");
+	  	goto end;
+		}
+
+	/* Don't want any retries */
+	SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
+
+	/* We might want to do other things with ssl here */
+
+	BIO_set_conn_hostname(sbio, connect_str);
+
+	out = BIO_new_fp(stdout, BIO_NOCLOSE);
+	if(BIO_do_connect(sbio) <= 0)
+		{
+		fprintf(stderr, "Error connecting to server\n");
+		ERR_print_errors_fp(stderr);
+		goto end;
+		}
+
+	if(BIO_do_handshake(sbio) <= 0)
+		{
+		fprintf(stderr, "Error establishing SSL connection\n");
+		ERR_print_errors_fp(stderr);
+		goto end;
+		}
+
+	/* Could examine ssl here to get connection info */
+
+	BIO_puts(sbio, "GET / HTTP/1.0\n\n");
+	for(;;)
+		{	
+		len = BIO_read(sbio, tmpbuf, 1024);
+		if(len <= 0) break;
+		BIO_write(out, tmpbuf, len);
+		}
+	end:
+	SSL_CONF_CTX_free(cctx);
+	BIO_free_all(sbio);
+	BIO_free(out);
+	return 0;
+	}
+