1/*
2 * Copyright (c) 1997 - 2000 Kungliga Tekniska H�gskolan
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.h>
36#include "gss_common.h"
37RCSID("$Id: gss_common.c 19937 2007-01-16 21:56:01Z lha $");
38
39void
40write_token (int sock, gss_buffer_t buf)
41{
42    uint32_t len, net_len;
43    OM_uint32 min_stat;
44
45    len = buf->length;
46
47    net_len = htonl(len);
48
49    if (net_write (sock, &net_len, 4) != 4)
50	err (1, "write");
51    if (net_write (sock, buf->value, len) != len)
52	err (1, "write");
53
54    gss_release_buffer (&min_stat, buf);
55}
56
57static void
58enet_read(int fd, void *buf, size_t len)
59{
60    ssize_t ret;
61
62    ret = net_read (fd, buf, len);
63    if (ret == 0)
64	errx (1, "EOF in read");
65    else if (ret < 0)
66	errx (1, "read");
67}
68
69void
70read_token (int sock, gss_buffer_t buf)
71{
72    uint32_t len, net_len;
73
74    enet_read (sock, &net_len, 4);
75    len = ntohl(net_len);
76    buf->length = len;
77    buf->value  = emalloc(len);
78    enet_read (sock, buf->value, len);
79}
80
81void
82gss_print_errors (int min_stat)
83{
84    OM_uint32 new_stat;
85    OM_uint32 msg_ctx = 0;
86    gss_buffer_desc status_string;
87    OM_uint32 ret;
88
89    do {
90	ret = gss_display_status (&new_stat,
91				  min_stat,
92				  GSS_C_MECH_CODE,
93				  GSS_C_NO_OID,
94				  &msg_ctx,
95				  &status_string);
96	fprintf (stderr, "%.*s\n", (int)status_string.length,
97		 (char *)status_string.value);
98	gss_release_buffer (&new_stat, &status_string);
99    } while (!GSS_ERROR(ret) && msg_ctx != 0);
100}
101
102void
103gss_verr(int exitval, int status, const char *fmt, va_list ap)
104{
105    vwarnx (fmt, ap);
106    gss_print_errors (status);
107    exit (exitval);
108}
109
110void
111gss_err(int exitval, int status, const char *fmt, ...)
112{
113    va_list args;
114
115    va_start(args, fmt);
116    gss_verr (exitval, status, fmt, args);
117    va_end(args);
118}
119
120gss_OID
121select_mech(const char *mech)
122{
123    if (strcasecmp(mech, "krb5") == 0)
124	return GSS_KRB5_MECHANISM;
125    else if (strcasecmp(mech, "spnego") == 0)
126	return GSS_SPNEGO_MECHANISM;
127    else if (strcasecmp(mech, "no-oid") == 0)
128	return GSS_C_NO_OID;
129    else
130	errx (1, "Unknown mechanism '%s' (spnego, krb5, no-oid)", mech);
131}
132
133void
134print_gss_name(const char *prefix, gss_name_t name)
135{
136    OM_uint32 maj_stat, min_stat;
137    gss_buffer_desc name_token;
138
139    maj_stat = gss_display_name (&min_stat,
140				 name,
141				 &name_token,
142				 NULL);
143    if (GSS_ERROR(maj_stat))
144	gss_err (1, min_stat, "gss_display_name");
145
146    fprintf (stderr, "%s `%.*s'\n", prefix,
147	     (int)name_token.length,
148	     (char *)name_token.value);
149
150    gss_release_buffer (&min_stat, &name_token);
151
152}
153