Changeset 745 for trunk/server/lib/util/genrand.c

Timestamp:

Nov 27, 2012, 4:43:17 PM (13 years ago)

Author:

Silvan Scherrer

Message:

Samba Server: updated trunk to 3.6.0

Location:

trunk/server

Files:

• . (modified) (1 prop)
• lib/util/genrand.c (modified) (1 diff)

trunk/server/lib/util/genrand.c

@@ -369 +369 @@
 
 /**
+ * Generate a random text password.
+ */
+
+_PUBLIC_ char *generate_random_password(TALLOC_CTX *mem_ctx, size_t min, size_t max)
+{
+        char *retstr;
+        /* This list does not include { or } because they cause
+         * problems for our provision (it can create a substring
+         * ${...}, and for Fedora DS (which treats {...} at the start
+         * of a stored password as special 
+         *  -- Andrew Bartlett 2010-03-11
+         */
+        const char *c_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_-#.,@$%&!?:;<=>()[]~";
+        size_t len = max;
+        size_t diff;
+
+        if (min > max) {
+                errno = EINVAL;
+                return NULL;
+        }
+
+        diff = max - min;
+
+        if (diff > 0 ) {
+                size_t tmp;
+
+                generate_random_buffer((uint8_t *)&tmp, sizeof(tmp));
+
+                tmp %= diff;
+
+                len = min + tmp;
+        }
+
+again:
+        retstr = generate_random_str_list(mem_ctx, len, c_list);
+        if (!retstr) return NULL;
+
+        /* we need to make sure the random string passes basic quality tests
+           or it might be rejected by windows as a password */
+        if (len >= 7 && !check_password_quality(retstr)) {
+                talloc_free(retstr);
+                goto again;
+        }
+
+        return retstr;
+}
+
+/**
  * Generate an array of unique text strings all of the same length.
  * The returned string will be allocated.