1 files changed, 74 insertions, 0 deletions
diff --git a/contrib/opie/libopie/challenge.c b/contrib/opie/libopie/challenge.c
new file mode 100644
index 0000000..d67d495
--- /dev/null
+++ b/contrib/opie/libopie/challenge.c
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+/* challenge.c: The opiechallenge() library function.
+
+%%% portions-copyright-cmetz
+Portions of this software are Copyright 1996 by Craig Metz, All Rights
+Reserved. The Inner Net License Version 2 applies to these portions of
+the software.
+You should have received a copy of the license with this software. If
+you didn't get a copy, you may request one from <license@inner.net>.
+
+Portions of this software are Copyright 1995 by Randall Atkinson and Dan
+McDonald, All Rights Reserved. All Rights under this copyright are assigned
+to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and
+License Agreement applies to this software.
+
+        History:
+
+	Modified by cmetz for OPIE 2.3. Use opie_ prefix. Send debug info to
+		syslog. Add sha plumbing.
+	Modified by cmetz for OPIE 2.2. Use FUNCTION declaration et al.
+        Created at NRL for OPIE 2.2 from opiesubr2.c
+*/
+#include "opie_cfg.h"
+#include <stdio.h>
+#include <string.h>
+#if DEBUG
+#include <syslog.h>
+#endif /* DEBUG */
+#include "opie.h"
+
+/* Return an OTP challenge string for user 'name'. 
+
+   The return values are:
+
+   0  = All good
+   -1 = Low-level error (file, memory, I/O, etc.)
+   1  = High-level error (user not found or locked)
+
+   This function MUST eventually be followed by an opieverify() to release
+   the user lock and file handles.
+
+   This function will give you a blanked-out state block if it returns a
+   nonzero status. Even though it returns a non-zero status and a blank
+   state block, you still MUST call opieverify() to clear the lock and
+   any internal state (the latter condition is not actually used yet).
+*/
+
+static char *algids[] = { NULL, NULL, NULL, "sha1", "md4", "md5" };
+
+int opiechallenge FUNCTION((mp, name, ss), struct opie *mp AND char *name AND char *ss)
+{
+  int rval = -1;
+
+  memset(mp, 0, sizeof(*mp));
+
+  rval = opielookup(mp, name);
+#if DEBUG
+  if (rval) syslog(LOG_DEBUG, "opiechallenge: opielookup(mp, name=%s) returned %d", name, rval);
+#endif /* DEBUG */
+
+  if (!rval) {
+    rval = opielock(name);
+#if DEBUG
+    if (rval) syslog(LOG_DEBUG, "opiechallenge: opielock(name=%s) returned %d", name, rval);
+#endif /* DEBUG */
+  }
+
+  if (rval) {
+    opierandomchallenge(ss);
+    memset(mp, 0, sizeof(*mp));
+  } else
+    sprintf(ss, "otp-%s %d %s", algids[MDX], mp->opie_n - 1, mp->opie_seed);
+
+  return rval;
+}