1 files changed, 77 insertions, 0 deletions
diff --git a/src/crypt16.c b/src/crypt16.c
new file mode 100644
index 0000000..56353c3
--- /dev/null
+++ b/src/crypt16.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2000-2002
+ *   Chris Adams <cmadams@iruntheinter.net>
+ *   written for HiWAAY Internet Services
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ */
+
+/*
+ * Adapted for Exim by Tamas TEVESZ <ice@extreme.hu>
+ * Further adapted by Philip Hazel to cut out this function for operating
+ *   systems that have a built-in version.
+ */
+
+/* The OS has a built-in crypt16(). Some compilers don't like compiling empty
+modules, so keep them happy with a dummy when skipping the rest. */
+
+#include "config.h"
+
+#ifdef HAVE_CRYPT16
+static void dummy(int x) { dummy(x-1); }
+#else
+
+/* The OS doesn't have a built-in crypt16(). Compile this one. */
+
+#include <unistd.h>
+#include <string.h>
+#include "os.h"
+
+#ifdef CRYPT_H
+#include <crypt.h>
+#endif
+
+char *
+crypt16(char *key, char *salt)
+{
+static char res[25];	/* Not threadsafe; like crypt() */
+static char s2[3];
+char *p;
+
+/* Clear the string of any previous data */
+memset (res, 0, sizeof (res));
+
+/* crypt the first part */
+if (!(p = crypt (key, salt))) return NULL;
+strncpy (res, p, 13);
+
+if (strlen (key) > 8)
+  {
+  /* crypt the rest
+   * the first two characters of the first block (not counting
+   * the salt) make up the new salt */
+
+  strncpy (s2, res+2, 2);
+  p = crypt (key+8, s2);
+  strncpy (res+13, p+2, 11);
+  memset (s2, 0, sizeof(s2));
+  }
+
+return (res);
+}
+#endif
+
+/* End of crypt16.c */