1 /* client.c --- Example SASL client.
2 * Copyright (C) 2004, 2005, 2007 Simon Josefsson
4 * This file is part of GNU SASL.
6 * This program 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 3 of the License, or
9 * (at your option) any later version.
11 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
29 client_authenticate (Gsasl
* ctx
, Gsasl_session
* session
)
31 char buf
[BUFSIZ
] = "";
35 /* This loop mimic a protocol where the client send data first. */
39 /* Generate client output. */
40 rc
= gsasl_step64 (session
, buf
, &p
);
42 if (rc
== GSASL_NEEDS_MORE
|| rc
== GSASL_OK
)
44 /* If sucessful, print it. */
45 printf ("Output:\n%s\n", p
);
49 if (rc
== GSASL_NEEDS_MORE
)
51 /* If the client need more data from server, get it here. */
52 printf ("Input base64 encoded data from server:\n");
53 fgets (buf
, sizeof (buf
) - 1, stdin
);
54 if (buf
[strlen (buf
) - 1] == '\n')
55 buf
[strlen (buf
) - 1] = '\0';
58 while (rc
== GSASL_NEEDS_MORE
);
64 printf ("Authentication error (%d): %s\n", rc
, gsasl_strerror (rc
));
68 /* The client is done. Here you would typically check if the server
69 let the client in. If not, you could try again. */
71 printf ("If server accepted us, we're done.\n");
77 Gsasl_session
*session
;
78 const char *mech
= "PLAIN";
81 /* Create new authentication session. */
82 if ((rc
= gsasl_client_start (ctx
, mech
, &session
)) != GSASL_OK
)
84 printf ("Cannot initialize client (%d): %s\n", rc
, gsasl_strerror (rc
));
88 /* Set username and password in session handle. This info will be
89 lost when this session is deallocated below. */
90 gsasl_property_set (session
, GSASL_AUTHID
, "jas");
91 gsasl_property_set (session
, GSASL_PASSWORD
, "secret");
94 client_authenticate (ctx
, session
);
97 gsasl_finish (session
);
101 main (int argc
, char *argv
[])
106 /* Initialize library. */
107 if ((rc
= gsasl_init (&ctx
)) != GSASL_OK
)
109 printf ("Cannot initialize libgsasl (%d): %s", rc
, gsasl_strerror (rc
));