1 files changed, 117 insertions, 0 deletions
diff --git a/imap/src/c-client/auth_log.c b/imap/src/c-client/auth_log.c
new file mode 100644
index 00000000..1e1b1b5c
--- /dev/null
+++ b/imap/src/c-client/auth_log.c
@@ -0,0 +1,117 @@
+/* ========================================================================
+ * 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:	Login 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:	5 December 1995
+ * Last Edited:	30 August 2006
+ */
+
+long auth_login_client (authchallenge_t challenger,authrespond_t responder,
+			char *service,NETMBX *mb,void *stream,
+			unsigned long *trial,char *user);
+char *auth_login_server (authresponse_t responder,int argc,char *argv[]);
+
+AUTHENTICATOR auth_log = {
+  AU_HIDE,			/* hidden */
+  "LOGIN",			/* authenticator name */
+  NIL,				/* always valid */
+  auth_login_client,		/* client method */
+  auth_login_server,		/* server method */
+  NIL				/* next authenticator */
+};
+
+#define PWD_USER "User Name"
+#define PWD_PWD "Password"
+
+/* 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_login_client (authchallenge_t challenger,authrespond_t responder,
+			char *service,NETMBX *mb,void *stream,
+			unsigned long *trial,char *user)
+{
+  char pwd[MAILTMPLEN];
+  void *challenge;
+  unsigned long clen;
+  long ret = NIL;
+				/* get user name prompt */
+  if (challenge = (*challenger) (stream,&clen)) {
+    fs_give ((void **) &challenge);
+    pwd[0] = NIL;		/* prompt user */
+    mm_login (mb,user,pwd,*trial);
+    if (!pwd[0]) {		/* user requested abort */
+      (*responder) (stream,NIL,0);
+      *trial = 0;		/* cancel subsequent attempts */
+      ret = LONGT;		/* will get a BAD response back */
+    }
+				/* send user name */
+    else if ((*responder) (stream,user,strlen (user)) &&
+	     (challenge = (*challenger) (stream,&clen))) {
+      fs_give ((void **) &challenge);
+				/* send password */
+      if ((*responder) (stream,pwd,strlen (pwd))) {
+	if (challenge = (*challenger) (stream,&clen))
+	  fs_give ((void **) &challenge);
+	else {
+	  ++*trial;		/* can try again if necessary */
+	  ret = LONGT;		/* check the authentication */
+	}
+      }
+    }
+  }
+  memset (pwd,0,MAILTMPLEN);	/* erase password */
+  if (!ret) *trial = 65535;	/* don't retry if bad protocol */
+  return ret;
+}
+
+
+/* Server authenticator
+ * Accepts: responder function
+ *	    argument count
+ *	    argument vector
+ * Returns: authenticated user name or NIL
+ */
+
+char *auth_login_server (authresponse_t responder,int argc,char *argv[])
+{
+  char *ret = NIL;
+  char *user,*pass,*authuser;
+  if (user = (*responder) (PWD_USER,sizeof (PWD_USER),NIL)) {
+    if (pass = (*responder) (PWD_PWD,sizeof (PWD_PWD),NIL)) {
+				/* delimit user from possible admin */
+      if (authuser = strchr (user,'*')) *authuser++ = '\0';
+      if (server_login (user,pass,authuser,argc,argv)) ret = myusername ();
+      fs_give ((void **) &pass);
+    }
+    fs_give ((void **) &user);
+  }
+  return ret;
+}