Openssl 1.1.0h

2018-04-02 22:33:38 +09:00
commit 1fd4faa81c
2471 changed files with 719220 additions and 0 deletions
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+/*
+ * Copyright 1995-2016 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
+ */
+
+#include "apps.h"
+#include <openssl/bio.h>
+#include <openssl/rand.h>
+
+static int seeded = 0;
+static int egdsocket = 0;
+
+int app_RAND_load_file(const char *file, int dont_warn)
+{
+    int consider_randfile = (file == NULL);
+    char buffer[200];
+
+    if (file == NULL)
+        file = RAND_file_name(buffer, sizeof(buffer));
+#ifndef OPENSSL_NO_EGD
+    else if (RAND_egd(file) > 0) {
+        /*
+         * we try if the given filename is an EGD socket. if it is, we don't
+         * write anything back to the file.
+         */
+        egdsocket = 1;
+        return 1;
+    }
+#endif
+    if (file == NULL || !RAND_load_file(file, -1)) {
+        if (RAND_status() == 0) {
+            if (!dont_warn) {
+                BIO_printf(bio_err, "unable to load 'random state'\n");
+                BIO_printf(bio_err,
+                           "This means that the random number generator has not been seeded\n");
+                BIO_printf(bio_err, "with much random data.\n");
+                if (consider_randfile) { /* explanation does not apply when a
+                                          * file is explicitly named */
+                    BIO_printf(bio_err,
+                               "Consider setting the RANDFILE environment variable to point at a file that\n");
+                    BIO_printf(bio_err,
+                               "'random' data can be kept in (the file will be overwritten).\n");
+                }
+            }
+            return 0;
+        }
+    }
+    seeded = 1;
+    return 1;
+}
+
+long app_RAND_load_files(char *name)
+{
+    char *p, *n;
+    int last;
+    long tot = 0;
+#ifndef OPENSSL_NO_EGD
+    int egd;
+#endif
+
+    for (;;) {
+        last = 0;
+        for (p = name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++) ;
+        if (*p == '\0')
+            last = 1;
+        *p = '\0';
+        n = name;
+        name = p + 1;
+        if (*n == '\0')
+            break;
+
+#ifndef OPENSSL_NO_EGD
+        egd = RAND_egd(n);
+        if (egd > 0)
+            tot += egd;
+        else
+#endif
+            tot += RAND_load_file(n, -1);
+        if (last)
+            break;
+    }
+    if (tot > 512)
+        app_RAND_allow_write_file();
+    return (tot);
+}
+
+int app_RAND_write_file(const char *file)
+{
+    char buffer[200];
+
+    if (egdsocket || !seeded)
+        /*
+         * If we did not manage to read the seed file, we should not write a
+         * low-entropy seed file back -- it would suppress a crucial warning
+         * the next time we want to use it.
+         */
+        return 0;
+
+    if (file == NULL)
+        file = RAND_file_name(buffer, sizeof(buffer));
+    if (file == NULL || !RAND_write_file(file)) {
+        BIO_printf(bio_err, "unable to write 'random state'\n");
+        return 0;
+    }
+    return 1;
+}
+
+void app_RAND_allow_write_file(void)
+{
+    seeded = 1;
+}