add files for 2006-08-30T23:37:06Z

diff --git a/src/c-client/auth_ext.c b/src/c-client/auth_ext.c
new file mode 100644 (file)
index 0000000..61dfc1b
--- /dev/null
+++ b/src/c-client/auth_ext.c
@@ -0,0 +1,96 @@
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:    EXTERNAL authenticator
+ *
+ * Author:     Mark Crispin
+ *             Networks and Distributed Computing
+ *             Computing & Communications
+ *             University of Washington
+ *             Administration Building, AG-44
+ *             Seattle, WA  98195
+ *             Internet: MRC@CAC.Washington.EDU
+ *
+ * Date:       6 April 2005
+ * Last Edited:        30 August 2006
+ */
+
+long auth_external_client (authchallenge_t challenger,authrespond_t responder,
+                         char *service,NETMBX *mb,void *stream,
+                         unsigned long *trial,char *user);
+char *auth_external_server (authresponse_t responder,int argc,char *argv[]);
+
+AUTHENTICATOR auth_ext = {     /* secure, has full auth, hidden */
+  AU_SECURE | AU_AUTHUSER | AU_HIDE,
+  "EXTERNAL",                  /* authenticator name */
+  NIL,                         /* always valid */
+  auth_external_client,                /* client method */
+  auth_external_server,                /* server method */
+  NIL                          /* next authenticator */
+};
+\f
+/* Client authenticator
+ * Accepts: challenger function
+ *        responder function
+ *        SASL service name
+ *        parsed network mailbox structure
+ *        stream argument for functions
+ *        pointer to current trial count
+ *        returned user name
+ * Returns: T if success, NIL otherwise, number of trials incremented if retry
+ */
+
+long auth_external_client (authchallenge_t challenger,authrespond_t responder,
+                         char *service,NETMBX *mb,void *stream,
+                         unsigned long *trial,char *user)
+{
+  void *challenge;
+  unsigned long clen;
+  long ret = NIL;
+  *trial = 65535;              /* never retry */
+  if (challenge = (*challenger) (stream,&clen)) {
+    fs_give ((void **) &challenge);
+                               /* send authorization id (empty string OK) */
+    if ((*responder) (stream,strcpy (user,mb->user),strlen (mb->user))) {
+      if (challenge = (*challenger) (stream,&clen))
+       fs_give ((void **) &challenge);
+      else ret = LONGT;                /* check the authentication */
+    }
+  }
+  return ret;
+}
+
+
+/* Server authenticator
+ * Accepts: responder function
+ *         argument count
+ *         argument vector
+ * Returns: authenticated user name or NIL
+ */
+
+char *auth_external_server (authresponse_t responder,int argc,char *argv[])
+{
+  unsigned long len;
+  char *authid;
+  char *authenid = (char *) mail_parameters (NIL,GET_EXTERNALAUTHID,NIL);
+  char *ret = NIL;
+                               /* get authorization identity */
+  if (authenid && (authid = (*responder) ("",0,&len))) {
+                               /* note: responders null-terminate */
+    if (*authid ? authserver_login (authid,authenid,argc,argv) :
+       authserver_login (authenid,NIL,argc,argv)) ret = myusername ();
+    fs_give ((void **) &authid);
+  }
+  return ret;
+}