1 /* 2 * Copyright (c) 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 "hprop.h" 35 36 RCSID("$Id: mit_dump.c,v 1.3 2000/08/09 09:57:37 joda Exp $"); 37 38 /* 39 can have any number of princ stanzas. 40 format is as follows (only \n indicates newlines) 41 princ\t%d\t (%d is KRB5_KDB_V1_BASE_LENGTH, always 38) 42 %d\t (strlen of principal e.g. shadow/foo@ANDREW.CMU.EDU) 43 %d\t (number of tl_data) 44 %d\t (number of key data, e.g. how many keys for this user) 45 %d\t (extra data length) 46 %s\t (principal name) 47 %d\t (attributes) 48 %d\t (max lifetime, seconds) 49 %d\t (max renewable life, seconds) 50 %d\t (expiration, seconds since epoch or 2145830400 for never) 51 %d\t (password expiration, seconds, 0 for never) 52 %d\t (last successful auth, seconds since epoch) 53 %d\t (last failed auth, per above) 54 %d\t (failed auth count) 55 foreach tl_data 0 to number of tl_data - 1 as above 56 %d\t%d\t (data type, data length) 57 foreach tl_data 0 to length-1 58 %02x (tl data contents[element n]) 59 except if tl_data length is 0 60 %d (always -1) 61 \t 62 foreach key 0 to number of keys - 1 as above 63 %d\t%d\t (key data version, kvno) 64 foreach version 0 to key data version - 1 (a key or a salt) 65 %d\t%d\t(data type for this key, data length for this key) 66 foreach key data length 0 to length-1 67 %02x (key data contents[element n]) 68 except if key_data length is 0 69 %d (always -1) 70 \t 71 foreach extra data length 0 to length - 1 72 %02x (extra data part) 73 unless no extra data 74 %d (always -1) 75 ;\n 76 77 */ 78 79 static int 80 hex_to_octet_string(const char *ptr, krb5_data *data) 81 { 82 int i; 83 unsigned int v; 84 for(i = 0; i < data->length; i++) { 85 if(sscanf(ptr + 2 * i, "%02x", &v) != 1) 86 return -1; 87 ((unsigned char*)data->data)[i] = v; 88 } 89 return 2 * i; 90 } 91 92 static char * 93 nexttoken(char **p) 94 { 95 char *q; 96 do { 97 q = strsep(p, " \t"); 98 } while(q && *q == '\0'); 99 return q; 100 } 101 102 static size_t 103 getdata(char **p, unsigned char *buf, size_t len) 104 { 105 size_t i; 106 int v; 107 char *q = nexttoken(p); 108 i = 0; 109 while(*q && i < len) { 110 if(sscanf(q, "%02x", &v) != 1) 111 break; 112 buf[i++] = v; 113 q += 2; 114 } 115 return i; 116 } 117 118 static int 119 getint(char **p) 120 { 121 int val; 122 char *q = nexttoken(p); 123 sscanf(q, "%d", &val); 124 return val; 125 } 126 127 #include <kadm5/admin.h> 128 129 static void 130 attr_to_flags(unsigned attr, HDBFlags *flags) 131 { 132 flags->postdate = !(attr & KRB5_KDB_DISALLOW_POSTDATED); 133 flags->forwardable = !(attr & KRB5_KDB_DISALLOW_FORWARDABLE); 134 flags->initial = !!(attr & KRB5_KDB_DISALLOW_TGT_BASED); 135 flags->renewable = !(attr & KRB5_KDB_DISALLOW_RENEWABLE); 136 flags->proxiable = !(attr & KRB5_KDB_DISALLOW_PROXIABLE); 137 /* DUP_SKEY */ 138 flags->invalid = !!(attr & KRB5_KDB_DISALLOW_ALL_TIX); 139 flags->require_preauth = !!(attr & KRB5_KDB_REQUIRES_PRE_AUTH); 140 /* HW_AUTH */ 141 flags->server = !(attr & KRB5_KDB_DISALLOW_SVR); 142 flags->change_pw = !!(attr & KRB5_KDB_PWCHANGE_SERVICE); 143 flags->client = 1; /* XXX */ 144 } 145 146 #define KRB5_KDB_SALTTYPE_NORMAL 0 147 #define KRB5_KDB_SALTTYPE_V4 1 148 #define KRB5_KDB_SALTTYPE_NOREALM 2 149 #define KRB5_KDB_SALTTYPE_ONLYREALM 3 150 #define KRB5_KDB_SALTTYPE_SPECIAL 4 151 #define KRB5_KDB_SALTTYPE_AFS3 5 152 153 static krb5_error_code 154 fix_salt(krb5_context context, hdb_entry *ent, int key_num) 155 { 156 krb5_error_code ret; 157 Salt *salt = ent->keys.val[key_num].salt; 158 /* fix salt type */ 159 switch((int)salt->type) { 160 case KRB5_KDB_SALTTYPE_NORMAL: 161 salt->type = KRB5_PADATA_PW_SALT; 162 break; 163 case KRB5_KDB_SALTTYPE_V4: 164 krb5_data_free(&salt->salt); 165 salt->type = KRB5_PADATA_PW_SALT; 166 break; 167 case KRB5_KDB_SALTTYPE_NOREALM: 168 { 169 size_t len; 170 int i; 171 krb5_error_code ret; 172 char *p; 173 174 len = 0; 175 for (i = 0; i < ent->principal->name.name_string.len; ++i) 176 len += strlen(ent->principal->name.name_string.val[i]); 177 ret = krb5_data_alloc (&salt->salt, len); 178 if (ret) 179 return ret; 180 p = salt->salt.data; 181 for (i = 0; i < ent->principal->name.name_string.len; ++i) { 182 memcpy (p, 183 ent->principal->name.name_string.val[i], 184 strlen(ent->principal->name.name_string.val[i])); 185 p += strlen(ent->principal->name.name_string.val[i]); 186 } 187 188 salt->type = KRB5_PADATA_PW_SALT; 189 break; 190 } 191 case KRB5_KDB_SALTTYPE_ONLYREALM: 192 krb5_data_free(&salt->salt); 193 ret = krb5_data_copy(&salt->salt, 194 ent->principal->realm, 195 strlen(ent->principal->realm)); 196 if(ret) 197 return ret; 198 salt->type = KRB5_PADATA_PW_SALT; 199 break; 200 case KRB5_KDB_SALTTYPE_SPECIAL: 201 salt->type = KRB5_PADATA_PW_SALT; 202 break; 203 case KRB5_KDB_SALTTYPE_AFS3: 204 krb5_data_free(&salt->salt); 205 ret = krb5_data_copy(&salt->salt, 206 ent->principal->realm, 207 strlen(ent->principal->realm)); 208 if(ret) 209 return ret; 210 salt->type = KRB5_PADATA_AFS3_SALT; 211 break; 212 default: 213 abort(); 214 } 215 return 0; 216 } 217 218 int 219 mit_prop_dump(void *arg, const char *file) 220 { 221 krb5_error_code ret; 222 char buf [1024]; 223 FILE *f; 224 int lineno = 0; 225 struct hdb_entry ent; 226 227 struct prop_data *pd = arg; 228 229 f = fopen(file, "r"); 230 if(f == NULL) 231 return errno; 232 233 while(fgets(buf, sizeof(buf), f)) { 234 char *p = buf, *q; 235 236 int i; 237 238 int num_tl_data; 239 int num_key_data; 240 int extra_data_length; 241 int attributes; 242 243 int tmp; 244 245 lineno++; 246 247 memset(&ent, 0, sizeof(ent)); 248 249 q = nexttoken(&p); 250 if(strcmp(q, "kdb5_util") == 0) { 251 int major; 252 q = nexttoken(&p); /* load_dump */ 253 if(strcmp(q, "load_dump")) 254 errx(1, "line %d: unknown version", lineno); 255 q = nexttoken(&p); /* load_dump */ 256 if(strcmp(q, "version")) 257 errx(1, "line %d: unknown version", lineno); 258 q = nexttoken(&p); /* x.0 */ 259 if(sscanf(q, "%d", &major) != 1) 260 errx(1, "line %d: unknown version", lineno); 261 if(major != 4) 262 errx(1, "unknown dump file format, got %d, expected 4", major); 263 continue; 264 } else if(strcmp(q, "princ") != 0) { 265 warnx("line %d: not a principal", lineno); 266 continue; 267 } 268 tmp = getint(&p); 269 if(tmp != 38) { 270 warnx("line %d: bad base length %d != 38", lineno, tmp); 271 continue; 272 } 273 q = nexttoken(&p); /* length of principal */ 274 num_tl_data = getint(&p); /* number of tl-data */ 275 num_key_data = getint(&p); /* number of key-data */ 276 extra_data_length = getint(&p); /* length of extra data */ 277 q = nexttoken(&p); /* principal name */ 278 krb5_parse_name(pd->context, q, &ent.principal); 279 attributes = getint(&p); /* attributes */ 280 attr_to_flags(attributes, &ent.flags); 281 tmp = getint(&p); /* max life */ 282 if(tmp != 0) { 283 ALLOC(ent.max_life); 284 *ent.max_life = tmp; 285 } 286 tmp = getint(&p); /* max renewable life */ 287 if(tmp != 0) { 288 ALLOC(ent.max_renew); 289 *ent.max_renew = tmp; 290 } 291 tmp = getint(&p); /* expiration */ 292 if(tmp != 0 && tmp != 2145830400) { 293 ALLOC(ent.valid_end); 294 *ent.valid_end = tmp; 295 } 296 tmp = getint(&p); /* pw expiration */ 297 if(tmp != 0) { 298 ALLOC(ent.pw_end); 299 *ent.pw_end = tmp; 300 } 301 q = nexttoken(&p); /* last auth */ 302 q = nexttoken(&p); /* last failed auth */ 303 q = nexttoken(&p); /* fail auth count */ 304 for(i = 0; i < num_tl_data; i++) { 305 unsigned long val; 306 int tl_type, tl_length; 307 unsigned char *buf; 308 krb5_principal princ; 309 310 tl_type = getint(&p); /* data type */ 311 tl_length = getint(&p); /* data length */ 312 313 #define KRB5_TL_LAST_PWD_CHANGE 1 314 #define KRB5_TL_MOD_PRINC 2 315 switch(tl_type) { 316 case KRB5_TL_MOD_PRINC: 317 buf = malloc(tl_length); 318 getdata(&p, buf, tl_length); /* data itself */ 319 val = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24); 320 ret = krb5_parse_name(pd->context, buf + 4, &princ); 321 free(buf); 322 ALLOC(ent.modified_by); 323 ent.modified_by->time = val; 324 ent.modified_by->principal = princ; 325 break; 326 default: 327 nexttoken(&p); 328 break; 329 } 330 } 331 ALLOC_SEQ(&ent.keys, num_key_data); 332 for(i = 0; i < num_key_data; i++) { 333 int key_versions; 334 key_versions = getint(&p); /* key data version */ 335 ent.kvno = getint(&p); /* XXX kvno */ 336 337 ALLOC(ent.keys.val[i].mkvno); 338 *ent.keys.val[i].mkvno = 0; 339 340 /* key version 0 -- actual key */ 341 ent.keys.val[i].key.keytype = getint(&p); /* key type */ 342 tmp = getint(&p); /* key length */ 343 /* the first two bytes of the key is the key length -- 344 skip it */ 345 krb5_data_alloc(&ent.keys.val[i].key.keyvalue, tmp - 2); 346 q = nexttoken(&p); /* key itself */ 347 hex_to_octet_string(q + 4, &ent.keys.val[i].key.keyvalue); 348 349 if(key_versions > 1) { 350 /* key version 1 -- optional salt */ 351 ALLOC(ent.keys.val[i].salt); 352 ent.keys.val[i].salt->type = getint(&p); /* salt type */ 353 tmp = getint(&p); /* salt length */ 354 if(tmp > 0) { 355 krb5_data_alloc(&ent.keys.val[i].salt->salt, tmp - 2); 356 q = nexttoken(&p); /* salt itself */ 357 hex_to_octet_string(q + 4, &ent.keys.val[i].salt->salt); 358 } else { 359 ent.keys.val[i].salt->salt.length = 0; 360 ent.keys.val[i].salt->salt.data = NULL; 361 tmp = getint(&p); /* -1, if no data. */ 362 } 363 fix_salt(pd->context, &ent, i); 364 } 365 } 366 q = nexttoken(&p); /* extra data */ 367 v5_prop(pd->context, NULL, &ent, arg); 368 } 369 return 0; 370 } 371