1/*
2 * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "test_locl.h"
35#include <gssapi/gssapi.h>
36#include <gssapi/gssapi_krb5.h>
37#include <gssapi/gssapi_spnego.h>
38#include "gss_common.h"
39RCSID("$Id$");
40
41void
42write_token (int sock, gss_buffer_t buf)
43{
44    uint32_t len, net_len;
45    OM_uint32 min_stat;
46
47    len = buf->length;
48
49    net_len = htonl(len);
50
51    if (net_write (sock, &net_len, 4) != 4)
52	err (1, "write");
53    if (net_write (sock, buf->value, len) != len)
54	err (1, "write");
55
56    gss_release_buffer (&min_stat, buf);
57}
58
59static void
60enet_read(int fd, void *buf, size_t len)
61{
62    ssize_t ret;
63
64    ret = net_read (fd, buf, len);
65    if (ret == 0)
66	errx (1, "EOF in read");
67    else if (ret < 0)
68	errx (1, "read");
69}
70
71void
72read_token (int sock, gss_buffer_t buf)
73{
74    uint32_t len, net_len;
75
76    enet_read (sock, &net_len, 4);
77    len = ntohl(net_len);
78    buf->length = len;
79    buf->value  = emalloc(len);
80    enet_read (sock, buf->value, len);
81}
82
83void
84gss_print_errors (int min_stat)
85{
86    OM_uint32 new_stat;
87    OM_uint32 msg_ctx = 0;
88    gss_buffer_desc status_string;
89    OM_uint32 ret;
90
91    do {
92	ret = gss_display_status (&new_stat,
93				  min_stat,
94				  GSS_C_MECH_CODE,
95				  GSS_C_NO_OID,
96				  &msg_ctx,
97				  &status_string);
98	fprintf (stderr, "%.*s\n", (int)status_string.length,
99		 (char *)status_string.value);
100	gss_release_buffer (&new_stat, &status_string);
101    } while (!GSS_ERROR(ret) && msg_ctx != 0);
102}
103
104void
105gss_verr(int exitval, int status, const char *fmt, va_list ap)
106{
107    vwarnx (fmt, ap);
108    gss_print_errors (status);
109    exit (exitval);
110}
111
112void
113gss_err(int exitval, int status, const char *fmt, ...)
114{
115    va_list args;
116
117    va_start(args, fmt);
118    gss_verr (exitval, status, fmt, args);
119    va_end(args);
120}
121
122gss_OID
123select_mech(const char *mech)
124{
125    if (strcasecmp(mech, "krb5") == 0)
126	return GSS_KRB5_MECHANISM;
127    else if (strcasecmp(mech, "spnego") == 0)
128	return GSS_SPNEGO_MECHANISM;
129    else if (strcasecmp(mech, "no-oid") == 0)
130	return GSS_C_NO_OID;
131    else
132	errx (1, "Unknown mechanism '%s' (spnego, krb5, no-oid)", mech);
133}
134
135void
136print_gss_name(const char *prefix, gss_name_t name)
137{
138    OM_uint32 maj_stat, min_stat;
139    gss_buffer_desc name_token;
140
141    maj_stat = gss_display_name (&min_stat,
142				 name,
143				 &name_token,
144				 NULL);
145    if (GSS_ERROR(maj_stat))
146	gss_err (1, min_stat, "gss_display_name");
147
148    fprintf (stderr, "%s `%.*s'\n", prefix,
149	     (int)name_token.length,
150	     (char *)name_token.value);
151
152    gss_release_buffer (&min_stat, &name_token);
153
154}
155