lib/external/client.c

   1 /* client.c --- EXTERNAL mechanism as defined in RFC 2222, client side.
   2  * Copyright (C) 2002, 2003, 2004, 2005  Simon Josefsson
   3  *
   4  * This file is part of GNU SASL Library.
   5  *
   6  * GNU SASL Library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation; either version 2.1 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * GNU SASL Library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with GNU SASL Library; if not, write to the Free
  18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #if HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 /* Get specification. */
  28 #include "external.h"
  29
  30 /* Get strdup, strlen. */
  31 #include <string.h>
  32
  33 int
  34 _gsasl_external_client_step (Gsasl_session * sctx,
  35                              void *mech_data,
  36                              const char *input, size_t input_len,
  37                              char **output, size_t * output_len)
  38 {
  39   const char *p;
  40
  41   p = gsasl_property_get (sctx, GSASL_AUTHZID);
  42   if (!p)
  43     p = "";
  44
  45   *output = strdup (p);
  46   if (!*output)
  47     return GSASL_MALLOC_ERROR;
  48   *output_len = strlen (p);
  49
  50   return GSASL_OK;
  51 }