1/* client.c --- SASL mechanism PLAIN as defined in RFC 2595, client side.
2 * Copyright (C) 2002-2012 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#ifdef HAVE_CONFIG_H
24#include "config.h"
25#endif
26
27/* Get specification. */
28#include "plain.h"
29
30/* Get memcpy, strdup, strlen. */
31#include <string.h>
32
33/* Get malloc, free. */
34#include <stdlib.h>
35
36int
37_gsasl_plain_client_step (Gsasl_session * sctx,
38 void *mech_data,
39 const char *input, size_t input_len,
40 char **output, size_t * output_len)
41{
42 const char *authzid = gsasl_property_get (sctx, GSASL_AUTHZID);
43 const char *authid = gsasl_property_get (sctx, GSASL_AUTHID);
44 const char *password = gsasl_property_get (sctx, GSASL_PASSWORD);
45 size_t authzidlen = 0, authidlen = 0, passwordlen = 0;
46 char *out;
47
48 if (authzid)
49 authzidlen = strlen (authzid);
50
51 if (authid)
52 authidlen = strlen (authid);
53 else
54 return GSASL_NO_AUTHID;
55
56 if (password)
57 passwordlen = strlen (password);
58 else
59 return GSASL_NO_PASSWORD;
60
61 *output_len = authzidlen + 1 + authidlen + 1 + passwordlen;
62 *output = out = malloc (*output_len);
63 if (!out)
64 return GSASL_MALLOC_ERROR;
65
66 if (authzid)
67 {
68 memcpy (out, authzid, authzidlen);
69 out += authzidlen;
70 }
71
72 *out++ = '\0';
73
74 memcpy (out, authid, authidlen);
75 out += authidlen;
76
77 *out++ = '\0';
78
79 memcpy (out, password, passwordlen);
80
81 return GSASL_OK;
82}
83