1 /* client.c --- Example SASL client.
2 * Copyright (C) 2004, 2005 Simon Josefsson
4 * This file is part of GNU SASL.
6 * GNU SASL is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * GNU SASL 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU SASL; if not, write to the Free Software
18 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30 client_authenticate (Gsasl
* ctx
, Gsasl_session
* session
)
32 char buf
[BUFSIZ
] = "";
36 /* This loop mimic a protocol where the client send data first. */
40 /* Generate client output. */
41 rc
= gsasl_step64 (session
, buf
, &p
);
43 if (rc
== GSASL_NEEDS_MORE
|| rc
== GSASL_OK
)
45 /* If sucessful, print it. */
46 printf ("Output:\n%s\n", p
);
50 if (rc
== GSASL_NEEDS_MORE
)
52 /* If the client need more data from server, get it here. */
53 printf ("Input base64 encoded data from server:\n");
54 fgets (buf
, sizeof (buf
) - 1, stdin
);
55 if (buf
[strlen (buf
) - 1] == '\n')
56 buf
[strlen (buf
) - 1] = '\0';
59 while (rc
== GSASL_NEEDS_MORE
);
65 printf ("Authentication error (%d): %s\n", rc
, gsasl_strerror (rc
));
69 /* The client is done. Here you would typically check if the server
70 let the client in. If not, you could try again. */
72 printf ("If server accepted us, we're done.\n");
78 Gsasl_session
*session
;
79 const char *mech
= "PLAIN";
82 /* Create new authentication session. */
83 if ((rc
= gsasl_client_start (ctx
, mech
, &session
)) != GSASL_OK
)
85 printf ("Cannot initialize client (%d): %s\n", rc
, gsasl_strerror (rc
));
89 /* Set username and password in session handle. This info will be
90 lost when this session is deallocated below. */
91 gsasl_property_set (session
, GSASL_AUTHID
, "jas");
92 gsasl_property_set (session
, GSASL_PASSWORD
, "secret");
95 client_authenticate (ctx
, session
);
98 gsasl_finish (session
);
102 main (int argc
, char *argv
[])
107 /* Initialize library. */
108 if ((rc
= gsasl_init (&ctx
)) != GSASL_OK
)
110 printf ("Cannot initialize libgsasl (%d): %s", rc
, gsasl_strerror (rc
));