1 files changed, 144 insertions, 0 deletions
diff --git a/openssl/demos/bio/server-arg.c b/openssl/demos/bio/server-arg.c
new file mode 100755
index 000000000..1d0e1db23
--- /dev/null
+++ b/openssl/demos/bio/server-arg.c
@@ -0,0 +1,144 @@
+/* NOCW */
+/* demos/bio/server-arg.c */
+
+/*
+ * A minimal program to serve an SSL connection. It uses blocking. It use the
+ * SSL_CONF API with the command line. cc -I../../include server-arg.c
+ * -L../.. -lssl -lcrypto -ldl
+ */
+
+#include <stdio.h>
+#include <signal.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+int main(int argc, char *argv[])
+{
+    char *port = "*:4433";
+    BIO *ssl_bio, *tmp;
+    SSL_CTX *ctx;
+    SSL_CONF_CTX *cctx;
+    char buf[512];
+    BIO *in = NULL;
+    int ret = 1, i;
+    char **args = argv + 1;
+    int nargs = argc - 1;
+
+    SSL_load_error_strings();
+
+    /* Add ciphers and message digests */
+    OpenSSL_add_ssl_algorithms();
+
+    ctx = SSL_CTX_new(SSLv23_server_method());
+
+    cctx = SSL_CONF_CTX_new();
+    SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
+    SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);
+    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 err;
+        }
+        if (rv < 0) {
+            fprintf(stderr, "Error in command %s\n", *args);
+            ERR_print_errors_fp(stderr);
+            goto err;
+        }
+        /* If rv > 0 we processed something so proceed to next arg */
+        if (rv > 0)
+            continue;
+        /* Otherwise application specific argument processing */
+        if (!strcmp(*args, "-port")) {
+            port = args[1];
+            if (port == NULL) {
+                fprintf(stderr, "Missing -port argument\n");
+                goto err;
+            }
+            args += 2;
+            nargs -= 2;
+            continue;
+        } else {
+            fprintf(stderr, "Unknown argument %s\n", *args);
+            goto err;
+        }
+    }
+
+    if (!SSL_CONF_CTX_finish(cctx)) {
+        fprintf(stderr, "Finish error\n");
+        ERR_print_errors_fp(stderr);
+        goto err;
+    }
+#if 0
+    /*
+     * Demo of how to iterate over all certificates in an SSL_CTX structure.
+     */
+    {
+        X509 *x;
+        int rv;
+        rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_FIRST);
+        while (rv) {
+            X509 *x = SSL_CTX_get0_certificate(ctx);
+            X509_NAME_print_ex_fp(stdout, X509_get_subject_name(x), 0,
+                                  XN_FLAG_ONELINE);
+            printf("\n");
+            rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_NEXT);
+        }
+        fflush(stdout);
+    }
+#endif
+    /* 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);
+
+ 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;
+
+    for (;;) {
+        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);
+    }
+    if (in != NULL)
+        BIO_free(in);
+    exit(ret);
+    return (!ret);
+}