Land https://codereview.chromium.org/889083003/ to update libsrtp to upstream 1.5.0

srtp/crypto/test/rand_gen_soak.c

+/*
+ * Soak test the RNG for exhaustion failures
+ */
+
+/*
+ *      
+ * Copyright (c) 2001-2006, Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <stdio.h>           /* for printf() */
+#include <unistd.h>          /* for getopt() */
+#include "crypto_kernel.h"
+
+#define BUF_LEN (MAX_PRINT_STRING_LEN/2)
+
+int main(int argc, char *argv[])
+{
+    int q;
+    extern char *optarg;
+    int num_octets = 0;
+    err_status_t status;
+    uint32_t iterations = 0;
+    int print_values = 0;
+
+    if (argc == 1) {
+        exit(255);
+    }
+
+    status = crypto_kernel_init();
+    if (status) {
+        printf("error: crypto_kernel init failed\n");
+        exit(1);
+    }
+
+    while (1) {
+        q = getopt(argc, argv, "pvn:");
+        if (q == -1) {
+            break;
+        }
+        switch (q) {
+        case 'p':
+            print_values = 1;
+            break;
+        case 'n':
+            num_octets = atoi(optarg);
+            if (num_octets < 0 || num_octets > BUF_LEN) {
+                exit(255);
+            }
+            break;
+        case 'v':
+            num_octets = 30;
+            print_values = 0;
+            break;
+        default:
+            exit(255);
+        }
+    }
+
+    if (num_octets > 0) {
+        while (iterations < 300000) {
+            uint8_t buffer[BUF_LEN];
+
+            status = crypto_get_random(buffer, num_octets);
+            if (status) {
+                printf("iteration %d error: failure in random source\n", iterations);
+                exit(255);
+            } else if (print_values) {
+                printf("%s\n", octet_string_hex_string(buffer, num_octets));
+            }
+            iterations++;
+        }
+    }
+
+    status = crypto_kernel_shutdown();
+    if (status) {
+        printf("error: crypto_kernel shutdown failed\n");
+        exit(1);
+    }
+
+    return 0;
+}
+