copy_cred_cache.c revision 178825
1/* 2 * Copyright (c) 2004 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#ifdef HAVE_CONFIG_H 35#include <config.h> 36RCSID("$Id: copy_cred_cache.c 15542 2005-07-01 07:20:54Z lha $"); 37#endif 38 39#include <stdlib.h> 40#include <krb5.h> 41#include <roken.h> 42#include <getarg.h> 43#include <parse_units.h> 44#include <parse_time.h> 45 46static int krbtgt_only_flag; 47static char *service_string; 48static char *enctype_string; 49static char *flags_string; 50static char *valid_string; 51static int fcache_version; 52static int help_flag; 53static int version_flag; 54 55static struct getargs args[] = { 56 { "krbtgt-only", 0, arg_flag, &krbtgt_only_flag, 57 "only copy local krbtgt" }, 58 { "service", 0, arg_string, &service_string, 59 "limit to this service", "principal" }, 60 { "enctype", 0, arg_string, &enctype_string, 61 "limit to this enctype", "enctype" }, 62 { "flags", 0, arg_string, &flags_string, 63 "limit to these flags", "ticketflags" }, 64 { "valid-for", 0, arg_string, &valid_string, 65 "limit to creds valid for at least this long", "time" }, 66 { "fcache-version", 0, arg_integer, &fcache_version, 67 "file cache version to create" }, 68 { "version", 0, arg_flag, &version_flag }, 69 { "help", 'h', arg_flag, &help_flag } 70}; 71 72static void 73usage(int ret) 74{ 75 arg_printusage(args, 76 sizeof(args) / sizeof(*args), 77 NULL, 78 "[from-cache] to-cache"); 79 exit(ret); 80} 81 82static int32_t 83bitswap32(int32_t b) 84{ 85 int32_t r = 0; 86 int i; 87 for (i = 0; i < 32; i++) { 88 r = r << 1 | (b & 1); 89 b = b >> 1; 90 } 91 return r; 92} 93 94static void 95parse_ticket_flags(krb5_context context, 96 const char *string, krb5_ticket_flags *ret_flags) 97{ 98 TicketFlags ff; 99 int flags = parse_flags(string, asn1_TicketFlags_units(), 0); 100 if (flags == -1) /* XXX */ 101 krb5_errx(context, 1, "bad flags specified: \"%s\"", string); 102 103 memset(&ff, 0, sizeof(ff)); 104 ff.proxy = 1; 105 if (parse_flags("proxy", asn1_TicketFlags_units(), 0) == TicketFlags2int(ff)) 106 ret_flags->i = flags; 107 else 108 ret_flags->i = bitswap32(flags); 109} 110 111int 112main(int argc, char **argv) 113{ 114 krb5_error_code ret; 115 krb5_context context; 116 int optidx = 0; 117 const char *from_name, *to_name; 118 krb5_ccache from_ccache, to_ccache; 119 krb5_flags whichfields = 0; 120 krb5_creds mcreds; 121 unsigned int matched; 122 123 setprogname(argv[0]); 124 125 memset(&mcreds, 0, sizeof(mcreds)); 126 127 if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx)) 128 usage(1); 129 130 if (help_flag) 131 usage(0); 132 133 if (version_flag) { 134 print_version(NULL); 135 exit(0); 136 } 137 argc -= optidx; 138 argv += optidx; 139 140 if (argc < 1 || argc > 2) 141 usage(1); 142 143 if (krb5_init_context(&context)) 144 errx(1, "krb5_init_context failed"); 145 146 if (service_string) { 147 ret = krb5_parse_name(context, service_string, &mcreds.server); 148 if (ret) 149 krb5_err(context, 1, ret, "%s", service_string); 150 } 151 if (enctype_string) { 152 krb5_enctype enctype; 153 ret = krb5_string_to_enctype(context, enctype_string, &enctype); 154 if (ret) 155 krb5_err(context, 1, ret, "%s", enctype_string); 156 whichfields |= KRB5_TC_MATCH_KEYTYPE; 157 mcreds.session.keytype = enctype; 158 } 159 if (flags_string) { 160 parse_ticket_flags(context, flags_string, &mcreds.flags); 161 whichfields |= KRB5_TC_MATCH_FLAGS; 162 } 163 if (valid_string) { 164 time_t t = parse_time(valid_string, "s"); 165 if(t < 0) 166 errx(1, "unknown time \"%s\"", valid_string); 167 mcreds.times.endtime = time(NULL) + t; 168 whichfields |= KRB5_TC_MATCH_TIMES; 169 } 170 if (fcache_version) 171 krb5_set_fcache_version(context, fcache_version); 172 173 if (argc == 1) { 174 from_name = krb5_cc_default_name(context); 175 to_name = argv[0]; 176 } else { 177 from_name = argv[0]; 178 to_name = argv[1]; 179 } 180 181 ret = krb5_cc_resolve(context, from_name, &from_ccache); 182 if (ret) 183 krb5_err(context, 1, ret, "%s", from_name); 184 185 if (krbtgt_only_flag) { 186 krb5_principal client; 187 ret = krb5_cc_get_principal(context, from_ccache, &client); 188 if (ret) 189 krb5_err(context, 1, ret, "getting default principal"); 190 ret = krb5_make_principal(context, &mcreds.server, 191 krb5_principal_get_realm(context, client), 192 KRB5_TGS_NAME, 193 krb5_principal_get_realm(context, client), 194 NULL); 195 if (ret) 196 krb5_err(context, 1, ret, "constructing krbtgt principal"); 197 krb5_free_principal(context, client); 198 } 199 ret = krb5_cc_resolve(context, to_name, &to_ccache); 200 if (ret) 201 krb5_err(context, 1, ret, "%s", to_name); 202 203 ret = krb5_cc_copy_cache_match(context, from_ccache, to_ccache, 204 whichfields, &mcreds, &matched); 205 if (ret) 206 krb5_err(context, 1, ret, "copying cred cache"); 207 208 krb5_cc_close(context, from_ccache); 209 if(matched == 0) 210 krb5_cc_destroy(context, to_ccache); 211 else 212 krb5_cc_close(context, to_ccache); 213 krb5_free_context(context); 214 return matched == 0; 215} 216