1 /* $NetBSD: copy_cred_cache.c,v 1.1.1.1 2011/04/13 18:14:38 elric Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "kuser_locl.h" 37 #include <config.h> 38 #include <krb5/parse_units.h> 39 #include <krb5/parse_time.h> 40 #include "kcc-commands.h" 41 42 static int32_t 43 bitswap32(int32_t b) 44 { 45 int32_t r = 0; 46 int i; 47 for (i = 0; i < 32; i++) { 48 r = r << 1 | (b & 1); 49 b = b >> 1; 50 } 51 return r; 52 } 53 54 static void 55 parse_ticket_flags(krb5_context context, 56 const char *string, krb5_ticket_flags *ret_flags) 57 { 58 TicketFlags ff; 59 int flags = parse_flags(string, asn1_TicketFlags_units(), 0); 60 if (flags == -1) /* XXX */ 61 krb5_errx(context, 1, "bad flags specified: \"%s\"", string); 62 63 memset(&ff, 0, sizeof(ff)); 64 ff.proxy = 1; 65 if (parse_flags("proxy", asn1_TicketFlags_units(), 0) == TicketFlags2int(ff)) 66 ret_flags->i = flags; 67 else 68 ret_flags->i = bitswap32(flags); 69 } 70 71 struct ctx { 72 krb5_flags whichfields; 73 krb5_creds mcreds; 74 }; 75 76 static krb5_boolean 77 matchfunc(krb5_context context, void *ptr, const krb5_creds *creds) 78 { 79 struct ctx *ctx = ptr; 80 if (krb5_compare_creds(context, ctx->whichfields, &ctx->mcreds, creds)) 81 return TRUE; 82 return FALSE; 83 } 84 85 int 86 copy_cred_cache(struct copy_cred_cache_options *opt, int argc, char **argv) 87 { 88 krb5_error_code ret; 89 const char *from_name, *to_name; 90 krb5_ccache from_ccache, to_ccache; 91 unsigned int matched; 92 struct ctx ctx; 93 94 memset(&ctx, 0, sizeof(ctx)); 95 96 if (opt->service_string) { 97 ret = krb5_parse_name(kcc_context, opt->service_string, &ctx.mcreds.server); 98 if (ret) 99 krb5_err(kcc_context, 1, ret, "%s", opt->service_string); 100 } 101 if (opt->enctype_string) { 102 krb5_enctype enctype; 103 ret = krb5_string_to_enctype(kcc_context, opt->enctype_string, &enctype); 104 if (ret) 105 krb5_err(kcc_context, 1, ret, "%s", opt->enctype_string); 106 ctx.whichfields |= KRB5_TC_MATCH_KEYTYPE; 107 ctx.mcreds.session.keytype = enctype; 108 } 109 if (opt->flags_string) { 110 parse_ticket_flags(kcc_context, opt->flags_string, &ctx.mcreds.flags); 111 ctx.whichfields |= KRB5_TC_MATCH_FLAGS; 112 } 113 if (opt->valid_for_string) { 114 time_t t = parse_time(opt->valid_for_string, "s"); 115 if(t < 0) 116 errx(1, "unknown time \"%s\"", opt->valid_for_string); 117 ctx.mcreds.times.endtime = time(NULL) + t; 118 ctx.whichfields |= KRB5_TC_MATCH_TIMES; 119 } 120 if (opt->fcache_version_integer) 121 krb5_set_fcache_version(kcc_context, opt->fcache_version_integer); 122 123 if (argc == 1) { 124 from_name = krb5_cc_default_name(kcc_context); 125 to_name = argv[0]; 126 } else { 127 from_name = argv[0]; 128 to_name = argv[1]; 129 } 130 131 ret = krb5_cc_resolve(kcc_context, from_name, &from_ccache); 132 if (ret) 133 krb5_err(kcc_context, 1, ret, "%s", from_name); 134 135 if (opt->krbtgt_only_flag) { 136 krb5_principal client; 137 ret = krb5_cc_get_principal(kcc_context, from_ccache, &client); 138 if (ret) 139 krb5_err(kcc_context, 1, ret, "getting default principal"); 140 ret = krb5_make_principal(kcc_context, &ctx.mcreds.server, 141 krb5_principal_get_realm(kcc_context, client), 142 KRB5_TGS_NAME, 143 krb5_principal_get_realm(kcc_context, client), 144 NULL); 145 if (ret) 146 krb5_err(kcc_context, 1, ret, "constructing krbtgt principal"); 147 krb5_free_principal(kcc_context, client); 148 } 149 ret = krb5_cc_resolve(kcc_context, to_name, &to_ccache); 150 if (ret) 151 krb5_err(kcc_context, 1, ret, "%s", to_name); 152 153 ret = krb5_cc_copy_match_f(kcc_context, from_ccache, to_ccache, 154 matchfunc, &ctx, &matched); 155 if (ret) 156 krb5_err(kcc_context, 1, ret, "copying cred cache"); 157 158 krb5_cc_close(kcc_context, from_ccache); 159 if(matched == 0) 160 krb5_cc_destroy(kcc_context, to_ccache); 161 else 162 krb5_cc_close(kcc_context, to_ccache); 163 164 return matched == 0; 165 } 166