From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/demos/bio/saccept.c | 122 +++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 openssl-1.1.0h/demos/bio/saccept.c

(limited to 'openssl-1.1.0h/demos/bio/saccept.c')

diff --git a/openssl-1.1.0h/demos/bio/saccept.c b/openssl-1.1.0h/demos/bio/saccept.c
new file mode 100644
index 0000000..66c5c61
--- /dev/null
+++ b/openssl-1.1.0h/demos/bio/saccept.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*-
+ * A minimal program to serve an SSL connection.
+ * It uses blocking.
+ * saccept host:port
+ * host is the interface IP to use.  If any interface, use *:port
+ * The default it *:4433
+ *
+ * cc -I../../include saccept.c -L../.. -lssl -lcrypto -ldl
+ */
+
+#include <stdio.h>
+#include <signal.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+#define CERT_FILE       "server.pem"
+
+static int done = 0;
+
+void interrupt(int sig)
+{
+    done = 1;
+}
+
+void sigsetup(void)
+{
+    struct sigaction sa;
+
+    /*
+     * Catch at most once, and don't restart the accept system call.
+     */
+    sa.sa_flags = SA_RESETHAND;
+    sa.sa_handler = interrupt;
+    sigemptyset(&sa.sa_mask);
+    sigaction(SIGINT, &sa, NULL);
+}
+
+int main(int argc, char *argv[])
+{
+    char *port = NULL;
+    BIO *in = NULL;
+    BIO *ssl_bio, *tmp;
+    SSL_CTX *ctx;
+    char buf[512];
+    int ret = 1, i;
+
+    if (argc <= 1)
+        port = "*:4433";
+    else
+        port = argv[1];
+
+    ctx = SSL_CTX_new(TLS_server_method());
+    if (!SSL_CTX_use_certificate_chain_file(ctx, CERT_FILE))
+        goto err;
+    if (!SSL_CTX_use_PrivateKey_file(ctx, CERT_FILE, SSL_FILETYPE_PEM))
+        goto err;
+    if (!SSL_CTX_check_private_key(ctx))
+        goto err;
+
+    /* Setup server side SSL bio */
+    ssl_bio = BIO_new_ssl(ctx, 0);
+
+    if ((in = BIO_new_accept(port)) == NULL)
+        goto err;
+
+    /*
+     * This means that when a new connection is accepted on 'in', The ssl_bio
+     * will be 'duplicated' and have the new socket BIO push into it.
+     * Basically it means the SSL BIO will be automatically setup
+     */
+    BIO_set_accept_bios(in, ssl_bio);
+
+    /* Arrange to leave server loop on interrupt */
+    sigsetup();
+
+ again:
+    /*
+     * The first call will setup the accept socket, and the second will get a
+     * socket.  In this loop, the first actual accept will occur in the
+     * BIO_read() function.
+     */
+
+    if (BIO_do_accept(in) <= 0)
+        goto err;
+
+    while (!done) {
+        i = BIO_read(in, buf, 512);
+        if (i == 0) {
+            /*
+             * If we have finished, remove the underlying BIO stack so the
+             * next time we call any function for this BIO, it will attempt
+             * to do an accept
+             */
+            printf("Done\n");
+            tmp = BIO_pop(in);
+            BIO_free_all(tmp);
+            goto again;
+        }
+        if (i < 0)
+            goto err;
+        fwrite(buf, 1, i, stdout);
+        fflush(stdout);
+    }
+
+    ret = 0;
+ err:
+    if (ret) {
+        ERR_print_errors_fp(stderr);
+    }
+    BIO_free(in);
+    exit(ret);
+    return (!ret);
+}
-- 
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