source: heimdal/trunk/kuser/kgetcred.c

Last change on this file was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 7.1 KB
Line 
1/*
2 * Copyright (c) 1997 - 2008 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 "kuser_locl.h"
35
36static char *cache_str;
37static char *out_cache_str;
38static char *delegation_cred_str;
39static char *etype_str;
40static int transit_flag = 1;
41static int forwardable_flag;
42static int canonicalize_flag;
43static char *impersonate_str;
44static char *nametype_str;
45static int version_flag;
46static int help_flag;
47
48struct getargs args[] = {
49 { "cache", 'c', arg_string, &cache_str,
50 NP_("credential cache to use", ""), "cache"},
51 { "out-cache", 0, arg_string, &out_cache_str,
52 NP_("credential cache to store credential in", ""), "cache"},
53 { "delegation-credential-cache",0,arg_string, &delegation_cred_str,
54 NP_("where to find the ticket use for delegation", ""), "cache"},
55 { "canonicalize", 0, arg_flag, &canonicalize_flag,
56 NP_("canonicalize the principal", ""), NULL },
57 { "forwardable", 0, arg_flag, &forwardable_flag,
58 NP_("forwardable ticket requested", ""), NULL},
59 { "transit-check", 0, arg_negative_flag, &transit_flag, NULL, NULL },
60 { "enctype", 'e', arg_string, &etype_str,
61 NP_("encryption type to use", ""), "enctype"},
62 { "impersonate", 0, arg_string, &impersonate_str,
63 NP_("client to impersonate", ""), "principal"},
64 { "name-type", 0, arg_string, &nametype_str, NULL, NULL },
65 { "version", 0, arg_flag, &version_flag, NULL, NULL },
66 { "help", 0, arg_flag, &help_flag, NULL, NULL }
67};
68
69static void
70usage (int ret)
71{
72 arg_printusage (args,
73 sizeof(args)/sizeof(*args),
74 NULL,
75 "service");
76 exit (ret);
77}
78
79int
80main(int argc, char **argv)
81{
82 krb5_error_code ret;
83 krb5_context context;
84 krb5_ccache cache;
85 krb5_creds *out;
86 int optidx = 0;
87 krb5_get_creds_opt opt;
88 krb5_principal server;
89 krb5_principal impersonate = NULL;
90
91 setprogname (argv[0]);
92
93 ret = krb5_init_context (&context);
94 if (ret)
95 errx(1, "krb5_init_context failed: %d", ret);
96
97 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
98 usage(1);
99
100 if (help_flag)
101 usage (0);
102
103 if(version_flag) {
104 print_version(NULL);
105 exit(0);
106 }
107
108 argc -= optidx;
109 argv += optidx;
110
111 if (argc != 1)
112 usage (1);
113
114 if(cache_str) {
115 ret = krb5_cc_resolve(context, cache_str, &cache);
116 if (ret)
117 krb5_err (context, 1, ret, "%s", cache_str);
118 } else {
119 ret = krb5_cc_default (context, &cache);
120 if (ret)
121 krb5_err (context, 1, ret, "krb5_cc_resolve");
122 }
123
124 ret = krb5_get_creds_opt_alloc(context, &opt);
125 if (ret)
126 krb5_err (context, 1, ret, "krb5_get_creds_opt_alloc");
127
128 if (etype_str) {
129 krb5_enctype enctype;
130
131 ret = krb5_string_to_enctype(context, etype_str, &enctype);
132 if (ret)
133 krb5_errx (context, 1, N_("unrecognized enctype: %s", ""),
134 etype_str);
135 krb5_get_creds_opt_set_enctype(context, opt, enctype);
136 }
137
138 if (impersonate_str) {
139 ret = krb5_parse_name(context, impersonate_str, &impersonate);
140 if (ret)
141 krb5_err (context, 1, ret, "krb5_parse_name %s", impersonate_str);
142 krb5_get_creds_opt_set_impersonate(context, opt, impersonate);
143 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE);
144 }
145
146 if (out_cache_str)
147 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE);
148
149 if (forwardable_flag)
150 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_FORWARDABLE);
151 if (!transit_flag)
152 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_TRANSIT_CHECK);
153 if (canonicalize_flag)
154 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_CANONICALIZE);
155
156 if (delegation_cred_str) {
157 krb5_ccache id;
158 krb5_creds c, mc;
159 Ticket ticket;
160
161 krb5_cc_clear_mcred(&mc);
162 ret = krb5_cc_get_principal(context, cache, &mc.server);
163 if (ret)
164 krb5_err (context, 1, ret, "krb5_cc_get_principal");
165
166 ret = krb5_cc_resolve(context, delegation_cred_str, &id);
167 if(ret)
168 krb5_err (context, 1, ret, "krb5_cc_resolve");
169
170 ret = krb5_cc_retrieve_cred(context, id, 0, &mc, &c);
171 if(ret)
172 krb5_err (context, 1, ret, "krb5_cc_retrieve_cred");
173
174 ret = decode_Ticket(c.ticket.data, c.ticket.length, &ticket, NULL);
175 if (ret) {
176 krb5_clear_error_message(context);
177 krb5_err (context, 1, ret, "decode_Ticket");
178 }
179 krb5_free_cred_contents(context, &c);
180
181 ret = krb5_get_creds_opt_set_ticket(context, opt, &ticket);
182 if(ret)
183 krb5_err (context, 1, ret, "krb5_get_creds_opt_set_ticket");
184 free_Ticket(&ticket);
185
186 krb5_cc_close (context, id);
187 krb5_free_principal(context, mc.server);
188
189 krb5_get_creds_opt_add_options(context, opt,
190 KRB5_GC_CONSTRAINED_DELEGATION);
191 }
192
193 ret = krb5_parse_name(context, argv[0], &server);
194 if (ret)
195 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);
196
197 if (nametype_str) {
198 int32_t nametype;
199
200 ret = krb5_parse_nametype(context, nametype_str, &nametype);
201 if (ret)
202 krb5_err(context, 1, ret, "krb5_parse_nametype");
203
204 server->name.name_type = (NAME_TYPE)nametype;
205 }
206
207 ret = krb5_get_creds(context, opt, cache, server, &out);
208 if (ret)
209 krb5_err (context, 1, ret, "krb5_get_creds");
210
211 if (out_cache_str) {
212 krb5_ccache id;
213
214 ret = krb5_cc_resolve(context, out_cache_str, &id);
215 if(ret)
216 krb5_err (context, 1, ret, "krb5_cc_resolve");
217
218 ret = krb5_cc_initialize(context, id, out->client);
219 if(ret)
220 krb5_err (context, 1, ret, "krb5_cc_initialize");
221
222 ret = krb5_cc_store_cred(context, id, out);
223 if(ret)
224 krb5_err (context, 1, ret, "krb5_cc_store_cred");
225 krb5_cc_close (context, id);
226 }
227
228 krb5_free_creds(context, out);
229 krb5_free_principal(context, server);
230 krb5_get_creds_opt_free(context, opt);
231 krb5_cc_close (context, cache);
232 krb5_free_context (context);
233
234 return 0;
235}
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