:-'Generic Commit'

dropshell-tool/openssl-1.1.1w/demos/bio/client-arg.c

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2013-2021 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
+ */
+
+#include <string.h>
+#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;
+
+    ctx = SSL_CTX_new(TLS_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") == 0) {
+            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;
+        }
+    }
+
+    if (!SSL_CONF_CTX_finish(cctx)) {
+        fprintf(stderr, "Finish error\n");
+        ERR_print_errors_fp(stderr);
+        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;
+    }
+
+    /* 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;
+}