Correct PPTP server firewall rules chain.
[tomato/davidwu.git] / release / src / router / nfs-utils / utils / gssd / gss_util.c
blob99aceb37714b48bab6a41c03d4e0d57c58532bb5
1 /*
2 * Adapted in part from MIT Kerberos 5-1.2.1 slave/kprop.c and from
3 * http://docs.sun.com/?p=/doc/816-1331/6m7oo9sms&a=view
5 * Copyright (c) 2002 The Regents of the University of Michigan.
6 * All rights reserved.
8 * Andy Adamson <andros@umich.edu>
9 * J. Bruce Fields <bfields@umich.edu>
10 * Marius Aamodt Eriksen <marius@umich.edu>
14 * slave/kprop.c
16 * Copyright 1990,1991 by the Massachusetts Institute of Technology.
17 * All Rights Reserved.
19 * Export of this software from the United States of America may
20 * require a specific license from the United States Government.
21 * It is the responsibility of any person or organization contemplating
22 * export to obtain such a license before exporting.
24 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
25 * distribute this software and its documentation for any purpose and
26 * without fee is hereby granted, provided that the above copyright
27 * notice appear in all copies and that both that copyright notice and
28 * this permission notice appear in supporting documentation, and that
29 * the name of M.I.T. not be used in advertising or publicity pertaining
30 * to distribution of the software without specific, written prior
31 * permission. Furthermore if you modify this software you must label
32 * your software as modified software and not distribute it in such a
33 * fashion that it might be confused with the original M.I.T. software.
34 * M.I.T. makes no representations about the suitability of
35 * this software for any purpose. It is provided "as is" without express
36 * or implied warranty.
40 * Copyright 1994 by OpenVision Technologies, Inc.
42 * Permission to use, copy, modify, distribute, and sell this software
43 * and its documentation for any purpose is hereby granted without fee,
44 * provided that the above copyright notice appears in all copies and
45 * that both that copyright notice and this permission notice appear in
46 * supporting documentation, and that the name of OpenVision not be used
47 * in advertising or publicity pertaining to distribution of the software
48 * without specific, written prior permission. OpenVision makes no
49 * representations about the suitability of this software for any
50 * purpose. It is provided "as is" without express or implied warranty.
52 * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
53 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
54 * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
55 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
56 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
57 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
58 * PERFORMANCE OF THIS SOFTWARE.
61 #ifdef HAVE_CONFIG_H
62 #include <config.h>
63 #endif /* HAVE_CONFIG_H */
65 #include <errno.h>
66 #include <stdio.h>
67 #include <ctype.h>
68 #include <sys/file.h>
69 #include <signal.h>
70 #include <string.h>
71 #include <sys/types.h>
72 #include <sys/time.h>
73 #include <sys/stat.h>
74 #include <sys/socket.h>
75 #include <netinet/in.h>
76 #include <sys/param.h>
77 #include <netdb.h>
78 #include <fcntl.h>
79 #include <gssapi/gssapi.h>
80 #if defined(HAVE_KRB5) && !defined(GSS_C_NT_HOSTBASED_SERVICE)
81 #include <gssapi/gssapi_generic.h>
82 #define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
83 #endif
84 #include "gss_util.h"
85 #include "err_util.h"
86 #include "gssd.h"
87 #ifdef HAVE_UNISTD_H
88 #include <unistd.h>
89 #endif
90 #include <stdlib.h>
91 #ifdef HAVE_COM_ERR_H
92 #include <com_err.h>
93 #endif
95 /* Global gssd_credentials handle */
96 gss_cred_id_t gssd_creds;
98 gss_OID g_mechOid = GSS_C_NULL_OID;;
100 #if 0
101 static void
102 display_status_1(char *m, u_int32_t code, int type, const gss_OID mech)
104 u_int32_t maj_stat, min_stat;
105 gss_buffer_desc msg = GSS_C_EMPTY_BUFFER;
106 u_int32_t msg_ctx = 0;
107 char *typestr;
109 switch (type) {
110 case GSS_C_GSS_CODE:
111 typestr = "GSS";
112 break;
113 case GSS_C_MECH_CODE:
114 typestr = "mechanism";
115 break;
116 default:
117 return;
118 /* NOTREACHED */
121 for (;;) {
122 maj_stat = gss_display_status(&min_stat, code,
123 type, mech, &msg_ctx, &msg);
124 if (maj_stat != GSS_S_COMPLETE) {
125 printerr(0, "ERROR: in call to "
126 "gss_display_status called from %s\n", m);
127 break;
128 } else {
129 printerr(0, "ERROR: GSS-API: (%s) error in %s(): %s\n",
130 typestr, m, (char *)msg.value);
133 if (msg.length != 0)
134 (void) gss_release_buffer(&min_stat, &msg);
136 if (msg_ctx == 0)
137 break;
140 #endif
142 static void
143 display_status_2(char *m, u_int32_t major, u_int32_t minor, const gss_OID mech)
145 u_int32_t maj_stat1, min_stat1;
146 u_int32_t maj_stat2, min_stat2;
147 gss_buffer_desc maj_gss_buf = GSS_C_EMPTY_BUFFER;
148 gss_buffer_desc min_gss_buf = GSS_C_EMPTY_BUFFER;
149 char maj_buf[30], min_buf[30];
150 char *maj, *min;
151 u_int32_t msg_ctx = 0;
152 int msg_verbosity = 0;
154 /* Get major status message */
155 maj_stat1 = gss_display_status(&min_stat1, major,
156 GSS_C_GSS_CODE, mech, &msg_ctx, &maj_gss_buf);
158 if (maj_stat1 != GSS_S_COMPLETE) {
159 snprintf(maj_buf, sizeof(maj_buf), "(0x%08x)", major);
160 maj = &maj_buf[0];
161 } else {
162 maj = maj_gss_buf.value;
165 /* Get minor status message */
166 maj_stat2 = gss_display_status(&min_stat2, minor,
167 GSS_C_MECH_CODE, mech, &msg_ctx, &min_gss_buf);
169 if (maj_stat2 != GSS_S_COMPLETE) {
170 snprintf(min_buf, sizeof(min_buf), "(0x%08x)", minor);
171 min = &min_buf[0];
172 } else {
173 min = min_gss_buf.value;
176 if (major == GSS_S_CREDENTIALS_EXPIRED)
177 msg_verbosity = 1;
178 printerr(msg_verbosity, "ERROR: GSS-API: error in %s(): %s - %s\n",
179 m, maj, min);
181 if (maj_gss_buf.length != 0)
182 (void) gss_release_buffer(&min_stat1, &maj_gss_buf);
183 if (min_gss_buf.length != 0)
184 (void) gss_release_buffer(&min_stat2, &min_gss_buf);
187 void
188 pgsserr(char *msg, u_int32_t maj_stat, u_int32_t min_stat, const gss_OID mech)
190 display_status_2(msg, maj_stat, min_stat, mech);
194 gssd_acquire_cred(char *server_name)
196 gss_buffer_desc name;
197 gss_name_t target_name;
198 u_int32_t maj_stat, min_stat;
199 u_int32_t ignore_maj_stat, ignore_min_stat;
200 gss_buffer_desc pbuf;
202 name.value = (void *)server_name;
203 name.length = strlen(server_name);
205 maj_stat = gss_import_name(&min_stat, &name,
206 (const gss_OID) GSS_C_NT_HOSTBASED_SERVICE,
207 &target_name);
209 if (maj_stat != GSS_S_COMPLETE) {
210 pgsserr("gss_import_name", maj_stat, min_stat, g_mechOid);
211 return (FALSE);
214 maj_stat = gss_acquire_cred(&min_stat, target_name, 0,
215 GSS_C_NULL_OID_SET, GSS_C_ACCEPT,
216 &gssd_creds, NULL, NULL);
218 if (maj_stat != GSS_S_COMPLETE) {
219 pgsserr("gss_acquire_cred", maj_stat, min_stat, g_mechOid);
220 ignore_maj_stat = gss_display_name(&ignore_min_stat,
221 target_name, &pbuf, NULL);
222 if (ignore_maj_stat == GSS_S_COMPLETE) {
223 printerr(1, "Unable to obtain credentials for '%.*s'\n",
224 pbuf.length, pbuf.value);
225 ignore_maj_stat = gss_release_buffer(&ignore_min_stat,
226 &pbuf);
230 ignore_maj_stat = gss_release_name(&ignore_min_stat, &target_name);
232 return (maj_stat == GSS_S_COMPLETE);
235 int gssd_check_mechs(void)
237 u_int32_t maj_stat, min_stat;
238 gss_OID_set supported_mechs = GSS_C_NO_OID_SET;
239 int retval = -1;
241 maj_stat = gss_indicate_mechs(&min_stat, &supported_mechs);
242 if (maj_stat != GSS_S_COMPLETE) {
243 printerr(0, "Unable to obtain list of supported mechanisms. "
244 "Check that gss library is properly configured.\n");
245 goto out;
247 if (supported_mechs == GSS_C_NO_OID_SET ||
248 supported_mechs->count == 0) {
249 printerr(0, "Unable to obtain list of supported mechanisms. "
250 "Check that gss library is properly configured.\n");
251 goto out;
253 maj_stat = gss_release_oid_set(&min_stat, &supported_mechs);
254 retval = 0;
255 out:
256 return retval;