1 files changed, 138 insertions, 0 deletions
diff --git a/openssl/demos/bio/server-conf.c b/openssl/demos/bio/server-conf.c
new file mode 100644
index 0000000..a09bc93
--- /dev/null
+++ b/openssl/demos/bio/server-conf.c
@@ -0,0 +1,138 @@
+/* NOCW */
+/* demos/bio/saccept-conf.c */
+
+/*
+ * A minimal program to serve an SSL connection. It uses blocking. It uses
+ * the SSL_CONF API with a configuration file. cc -I../../include saccept.c
+ * -L../.. -lssl -lcrypto -ldl
+ */
+
+#include <stdio.h>
+#include <signal.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+#include <openssl/conf.h>
+
+int main(int argc, char *argv[])
+{
+    char *port = "*:4433";
+    BIO *in = NULL;
+    BIO *ssl_bio, *tmp;
+    SSL_CTX *ctx;
+    SSL_CONF_CTX *cctx = NULL;
+    CONF *conf = NULL;
+    STACK_OF(CONF_VALUE) *sect = NULL;
+    CONF_VALUE *cnf;
+    long errline = -1;
+    char buf[512];
+    int ret = 1, i;
+
+    SSL_load_error_strings();
+
+    /* Add ciphers and message digests */
+    OpenSSL_add_ssl_algorithms();
+
+    conf = NCONF_new(NULL);
+
+    if (NCONF_load(conf, "accept.cnf", &errline) <= 0) {
+        if (errline <= 0)
+            fprintf(stderr, "Error processing config file\n");
+        else
+            fprintf(stderr, "Error on line %ld\n", errline);
+        goto err;
+    }
+
+    sect = NCONF_get_section(conf, "default");
+
+    if (sect == NULL) {
+        fprintf(stderr, "Error retrieving default section\n");
+        goto err;
+    }
+
+    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_flags(cctx, SSL_CONF_FLAG_FILE);
+    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
+    for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
+        int rv;
+        cnf = sk_CONF_VALUE_value(sect, i);
+        rv = SSL_CONF_cmd(cctx, cnf->name, cnf->value);
+        if (rv > 0)
+            continue;
+        if (rv != -2) {
+            fprintf(stderr, "Error processing %s = %s\n",
+                    cnf->name, cnf->value);
+            ERR_print_errors_fp(stderr);
+            goto err;
+        }
+        if (!strcmp(cnf->name, "Port")) {
+            port = cnf->value;
+        } else {
+            fprintf(stderr, "Unknown configuration option %s\n", cnf->name);
+            goto err;
+        }
+    }
+
+    if (!SSL_CONF_CTX_finish(cctx)) {
+        fprintf(stderr, "Finish error\n");
+        ERR_print_errors_fp(stderr);
+        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);
+
+ 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) {
+            if (BIO_should_retry(in))
+                continue;
+            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);
+}