1 files changed, 135 insertions, 0 deletions
diff --git a/login/client-login.c b/login/client-login.c
new file mode 100644
index 0000000..a8b6601
--- /dev/null
+++ b/login/client-login.c
@@ -0,0 +1,135 @@
+/*
+ *  This file is part of libESMTP, a library for submission of RFC 2822
+ *  formatted electronic mail messages using the SMTP protocol described
+ *  in RFC 2821.
+ *
+ *  Copyright (C) 2001,2002  Brian Stafford  <brian@stafford.uklinux.net>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "auth-client.h"
+#include "auth-plugin.h"
+
+#define NELT(x)		(sizeof x / sizeof x[0])
+
+static int login_init (void *pctx);
+static void login_destroy (void *ctx);
+static const char *login_response (void *ctx,
+				   const char *challenge, int *len,
+				   auth_interact_t interact, void *arg);
+
+const struct auth_client_plugin sasl_client =
+  {
+  /* Plugin information */
+    "LOGIN",
+    "Non-standard LOGIN mechanism",
+  /* Plugin instance */
+    login_init,
+    login_destroy,
+  /* Authentication */
+    login_response,
+    AUTH_PLUGIN_PLAIN,
+  /* Security Layer */
+    0,
+    NULL,
+    NULL,
+  };
+
+static const struct auth_client_request client_request[] =
+  {
+    { "user",		AUTH_CLEARTEXT | AUTH_USER,	"User Name",	0, },
+    { "passphrase",	AUTH_CLEARTEXT | AUTH_PASS,	"Password",	0, },
+  };
+
+struct login_context
+  {
+    int state;
+    char *user;
+    int user_len;
+    char *pass;
+    int pass_len;
+  };
+ 
+static int 
+login_init (void *pctx)
+{
+  struct login_context *login;
+
+  login = malloc (sizeof (struct login_context));
+  memset (login, 0, sizeof (struct login_context));
+
+  *(void **) pctx = login;
+  return 1;
+}
+
+static void
+login_destroy (void *ctx)
+{
+  struct login_context *login = ctx;
+
+  if (login->user != NULL)
+    {
+      memset (login->user, '\0', login->user_len);
+      free (login->user);
+    }
+  if (login->pass != NULL)
+    {
+      memset (login->pass, '\0', login->pass_len);
+      free (login->pass);
+    }
+  free (login);
+}
+
+static const char *
+login_response (void *ctx, const char *challenge __attribute__ ((unused)),
+                int *len, auth_interact_t interact, void *arg)
+{
+  struct login_context *login = ctx;
+  char *result[NELT (client_request)];
+
+  switch (login->state)
+    {
+    case 0:
+      /* Challenge is ignored (probably "Username:") */
+      if (!(*interact) (client_request, result, NELT (client_request), arg))
+        break;
+      login->user = strdup (result[0]);
+      login->user_len = strlen (login->user);
+      login->pass = strdup (result[1]);
+      login->pass_len = strlen (login->pass);
+      login->state = 1;
+      *len = login->user_len;
+      return login->user;
+
+    case 1:
+      /* Challenge is ignored (probably "Password:") */
+      login->state = -1;
+      *len = login->pass_len;
+      return login->pass;
+    }
+  *len = 0;
+  return NULL;
+}
+