mit_dump.c revision 178825
172445Sassar/* 272445Sassar * Copyright (c) 2000 Kungliga Tekniska H�gskolan 372445Sassar * (Royal Institute of Technology, Stockholm, Sweden). 472445Sassar * All rights reserved. 572445Sassar * 672445Sassar * Redistribution and use in source and binary forms, with or without 772445Sassar * modification, are permitted provided that the following conditions 872445Sassar * are met: 972445Sassar * 1072445Sassar * 1. Redistributions of source code must retain the above copyright 1172445Sassar * notice, this list of conditions and the following disclaimer. 1272445Sassar * 1372445Sassar * 2. Redistributions in binary form must reproduce the above copyright 1472445Sassar * notice, this list of conditions and the following disclaimer in the 1572445Sassar * documentation and/or other materials provided with the distribution. 1672445Sassar * 1772445Sassar * 3. Neither the name of the Institute nor the names of its contributors 1872445Sassar * may be used to endorse or promote products derived from this software 1972445Sassar * without specific prior written permission. 2072445Sassar * 2172445Sassar * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2272445Sassar * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2372445Sassar * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2472445Sassar * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2572445Sassar * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2672445Sassar * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2772445Sassar * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2872445Sassar * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2972445Sassar * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3072445Sassar * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3172445Sassar * SUCH DAMAGE. 3272445Sassar */ 3372445Sassar 3472445Sassar#include "hprop.h" 3572445Sassar 36178825SdfrRCSID("$Id: mit_dump.c 21745 2007-07-31 16:11:25Z lha $"); 3772445Sassar 3872445Sassar/* 3972445Sassarcan have any number of princ stanzas. 4072445Sassarformat is as follows (only \n indicates newlines) 4172445Sassarprinc\t%d\t (%d is KRB5_KDB_V1_BASE_LENGTH, always 38) 4272445Sassar%d\t (strlen of principal e.g. shadow/foo@ANDREW.CMU.EDU) 4372445Sassar%d\t (number of tl_data) 4472445Sassar%d\t (number of key data, e.g. how many keys for this user) 4572445Sassar%d\t (extra data length) 4672445Sassar%s\t (principal name) 4772445Sassar%d\t (attributes) 4872445Sassar%d\t (max lifetime, seconds) 4972445Sassar%d\t (max renewable life, seconds) 5072445Sassar%d\t (expiration, seconds since epoch or 2145830400 for never) 5172445Sassar%d\t (password expiration, seconds, 0 for never) 5272445Sassar%d\t (last successful auth, seconds since epoch) 5372445Sassar%d\t (last failed auth, per above) 5472445Sassar%d\t (failed auth count) 5572445Sassarforeach tl_data 0 to number of tl_data - 1 as above 5672445Sassar %d\t%d\t (data type, data length) 5772445Sassar foreach tl_data 0 to length-1 5872445Sassar %02x (tl data contents[element n]) 5972445Sassar except if tl_data length is 0 6072445Sassar %d (always -1) 6172445Sassar \t 6272445Sassarforeach key 0 to number of keys - 1 as above 6372445Sassar %d\t%d\t (key data version, kvno) 6472445Sassar foreach version 0 to key data version - 1 (a key or a salt) 6572445Sassar %d\t%d\t(data type for this key, data length for this key) 6672445Sassar foreach key data length 0 to length-1 6772445Sassar %02x (key data contents[element n]) 6872445Sassar except if key_data length is 0 6972445Sassar %d (always -1) 7072445Sassar \t 7172445Sassarforeach extra data length 0 to length - 1 7272445Sassar %02x (extra data part) 7372445Sassarunless no extra data 7472445Sassar %d (always -1) 7572445Sassar;\n 7672445Sassar 7772445Sassar*/ 7872445Sassar 7972445Sassarstatic int 8072445Sassarhex_to_octet_string(const char *ptr, krb5_data *data) 8172445Sassar{ 8272445Sassar int i; 8372445Sassar unsigned int v; 8472445Sassar for(i = 0; i < data->length; i++) { 8572445Sassar if(sscanf(ptr + 2 * i, "%02x", &v) != 1) 8672445Sassar return -1; 8772445Sassar ((unsigned char*)data->data)[i] = v; 8872445Sassar } 8972445Sassar return 2 * i; 9072445Sassar} 9172445Sassar 9272445Sassarstatic char * 9372445Sassarnexttoken(char **p) 9472445Sassar{ 9572445Sassar char *q; 9672445Sassar do { 9772445Sassar q = strsep(p, " \t"); 9872445Sassar } while(q && *q == '\0'); 9972445Sassar return q; 10072445Sassar} 10172445Sassar 10272445Sassarstatic size_t 10372445Sassargetdata(char **p, unsigned char *buf, size_t len) 10472445Sassar{ 10572445Sassar size_t i; 10672445Sassar int v; 10772445Sassar char *q = nexttoken(p); 10872445Sassar i = 0; 10972445Sassar while(*q && i < len) { 11072445Sassar if(sscanf(q, "%02x", &v) != 1) 11172445Sassar break; 11272445Sassar buf[i++] = v; 11372445Sassar q += 2; 11472445Sassar } 11572445Sassar return i; 11672445Sassar} 11772445Sassar 11872445Sassarstatic int 11972445Sassargetint(char **p) 12072445Sassar{ 12172445Sassar int val; 12272445Sassar char *q = nexttoken(p); 12372445Sassar sscanf(q, "%d", &val); 12472445Sassar return val; 12572445Sassar} 12672445Sassar 12772445Sassar#include <kadm5/admin.h> 12872445Sassar 12972445Sassarstatic void 13072445Sassarattr_to_flags(unsigned attr, HDBFlags *flags) 13172445Sassar{ 13272445Sassar flags->postdate = !(attr & KRB5_KDB_DISALLOW_POSTDATED); 13372445Sassar flags->forwardable = !(attr & KRB5_KDB_DISALLOW_FORWARDABLE); 13472445Sassar flags->initial = !!(attr & KRB5_KDB_DISALLOW_TGT_BASED); 13572445Sassar flags->renewable = !(attr & KRB5_KDB_DISALLOW_RENEWABLE); 13672445Sassar flags->proxiable = !(attr & KRB5_KDB_DISALLOW_PROXIABLE); 13772445Sassar /* DUP_SKEY */ 13872445Sassar flags->invalid = !!(attr & KRB5_KDB_DISALLOW_ALL_TIX); 13972445Sassar flags->require_preauth = !!(attr & KRB5_KDB_REQUIRES_PRE_AUTH); 14072445Sassar /* HW_AUTH */ 14172445Sassar flags->server = !(attr & KRB5_KDB_DISALLOW_SVR); 14272445Sassar flags->change_pw = !!(attr & KRB5_KDB_PWCHANGE_SERVICE); 14372445Sassar flags->client = 1; /* XXX */ 14472445Sassar} 14572445Sassar 14672445Sassar#define KRB5_KDB_SALTTYPE_NORMAL 0 14772445Sassar#define KRB5_KDB_SALTTYPE_V4 1 14872445Sassar#define KRB5_KDB_SALTTYPE_NOREALM 2 14972445Sassar#define KRB5_KDB_SALTTYPE_ONLYREALM 3 15072445Sassar#define KRB5_KDB_SALTTYPE_SPECIAL 4 15172445Sassar#define KRB5_KDB_SALTTYPE_AFS3 5 15272445Sassar 15372445Sassarstatic krb5_error_code 15472445Sassarfix_salt(krb5_context context, hdb_entry *ent, int key_num) 15572445Sassar{ 15672445Sassar krb5_error_code ret; 15772445Sassar Salt *salt = ent->keys.val[key_num].salt; 15872445Sassar /* fix salt type */ 15972445Sassar switch((int)salt->type) { 16072445Sassar case KRB5_KDB_SALTTYPE_NORMAL: 16172445Sassar salt->type = KRB5_PADATA_PW_SALT; 16272445Sassar break; 16372445Sassar case KRB5_KDB_SALTTYPE_V4: 16472445Sassar krb5_data_free(&salt->salt); 16572445Sassar salt->type = KRB5_PADATA_PW_SALT; 16672445Sassar break; 16772445Sassar case KRB5_KDB_SALTTYPE_NOREALM: 16872445Sassar { 16972445Sassar size_t len; 17072445Sassar int i; 17172445Sassar char *p; 17272445Sassar 17372445Sassar len = 0; 17472445Sassar for (i = 0; i < ent->principal->name.name_string.len; ++i) 17572445Sassar len += strlen(ent->principal->name.name_string.val[i]); 17672445Sassar ret = krb5_data_alloc (&salt->salt, len); 17772445Sassar if (ret) 17872445Sassar return ret; 17972445Sassar p = salt->salt.data; 18072445Sassar for (i = 0; i < ent->principal->name.name_string.len; ++i) { 18172445Sassar memcpy (p, 18272445Sassar ent->principal->name.name_string.val[i], 18372445Sassar strlen(ent->principal->name.name_string.val[i])); 18472445Sassar p += strlen(ent->principal->name.name_string.val[i]); 18572445Sassar } 18672445Sassar 18772445Sassar salt->type = KRB5_PADATA_PW_SALT; 18872445Sassar break; 18972445Sassar } 19072445Sassar case KRB5_KDB_SALTTYPE_ONLYREALM: 19172445Sassar krb5_data_free(&salt->salt); 19272445Sassar ret = krb5_data_copy(&salt->salt, 19372445Sassar ent->principal->realm, 19472445Sassar strlen(ent->principal->realm)); 19572445Sassar if(ret) 19672445Sassar return ret; 19772445Sassar salt->type = KRB5_PADATA_PW_SALT; 19872445Sassar break; 19972445Sassar case KRB5_KDB_SALTTYPE_SPECIAL: 20072445Sassar salt->type = KRB5_PADATA_PW_SALT; 20172445Sassar break; 20272445Sassar case KRB5_KDB_SALTTYPE_AFS3: 20372445Sassar krb5_data_free(&salt->salt); 20472445Sassar ret = krb5_data_copy(&salt->salt, 20572445Sassar ent->principal->realm, 20672445Sassar strlen(ent->principal->realm)); 20772445Sassar if(ret) 20872445Sassar return ret; 20972445Sassar salt->type = KRB5_PADATA_AFS3_SALT; 21072445Sassar break; 21172445Sassar default: 21272445Sassar abort(); 21372445Sassar } 21472445Sassar return 0; 21572445Sassar} 21672445Sassar 21772445Sassarint 21872445Sassarmit_prop_dump(void *arg, const char *file) 21972445Sassar{ 22072445Sassar krb5_error_code ret; 221178825Sdfr char line [2048]; 22272445Sassar FILE *f; 22372445Sassar int lineno = 0; 224178825Sdfr struct hdb_entry_ex ent; 22572445Sassar 22672445Sassar struct prop_data *pd = arg; 22772445Sassar 22872445Sassar f = fopen(file, "r"); 22972445Sassar if(f == NULL) 23072445Sassar return errno; 23172445Sassar 232178825Sdfr while(fgets(line, sizeof(line), f)) { 233178825Sdfr char *p = line, *q; 23472445Sassar 23572445Sassar int i; 23672445Sassar 23772445Sassar int num_tl_data; 23872445Sassar int num_key_data; 23972445Sassar int extra_data_length; 24072445Sassar int attributes; 24172445Sassar 24272445Sassar int tmp; 24372445Sassar 24472445Sassar lineno++; 24572445Sassar 24672445Sassar memset(&ent, 0, sizeof(ent)); 24772445Sassar 24872445Sassar q = nexttoken(&p); 24972445Sassar if(strcmp(q, "kdb5_util") == 0) { 25072445Sassar int major; 25172445Sassar q = nexttoken(&p); /* load_dump */ 25272445Sassar if(strcmp(q, "load_dump")) 25372445Sassar errx(1, "line %d: unknown version", lineno); 25472445Sassar q = nexttoken(&p); /* load_dump */ 25572445Sassar if(strcmp(q, "version")) 25672445Sassar errx(1, "line %d: unknown version", lineno); 25772445Sassar q = nexttoken(&p); /* x.0 */ 25872445Sassar if(sscanf(q, "%d", &major) != 1) 25972445Sassar errx(1, "line %d: unknown version", lineno); 26072445Sassar if(major != 4) 26172445Sassar errx(1, "unknown dump file format, got %d, expected 4", major); 26272445Sassar continue; 26372445Sassar } else if(strcmp(q, "princ") != 0) { 26472445Sassar warnx("line %d: not a principal", lineno); 26572445Sassar continue; 26672445Sassar } 26772445Sassar tmp = getint(&p); 26872445Sassar if(tmp != 38) { 26972445Sassar warnx("line %d: bad base length %d != 38", lineno, tmp); 27072445Sassar continue; 27172445Sassar } 27272445Sassar q = nexttoken(&p); /* length of principal */ 27372445Sassar num_tl_data = getint(&p); /* number of tl-data */ 27472445Sassar num_key_data = getint(&p); /* number of key-data */ 27572445Sassar extra_data_length = getint(&p); /* length of extra data */ 27672445Sassar q = nexttoken(&p); /* principal name */ 277178825Sdfr krb5_parse_name(pd->context, q, &ent.entry.principal); 27872445Sassar attributes = getint(&p); /* attributes */ 279178825Sdfr attr_to_flags(attributes, &ent.entry.flags); 28072445Sassar tmp = getint(&p); /* max life */ 28172445Sassar if(tmp != 0) { 282178825Sdfr ALLOC(ent.entry.max_life); 283178825Sdfr *ent.entry.max_life = tmp; 28472445Sassar } 28572445Sassar tmp = getint(&p); /* max renewable life */ 28672445Sassar if(tmp != 0) { 287178825Sdfr ALLOC(ent.entry.max_renew); 288178825Sdfr *ent.entry.max_renew = tmp; 28972445Sassar } 29072445Sassar tmp = getint(&p); /* expiration */ 29172445Sassar if(tmp != 0 && tmp != 2145830400) { 292178825Sdfr ALLOC(ent.entry.valid_end); 293178825Sdfr *ent.entry.valid_end = tmp; 29472445Sassar } 29572445Sassar tmp = getint(&p); /* pw expiration */ 29672445Sassar if(tmp != 0) { 297178825Sdfr ALLOC(ent.entry.pw_end); 298178825Sdfr *ent.entry.pw_end = tmp; 29972445Sassar } 30072445Sassar q = nexttoken(&p); /* last auth */ 30172445Sassar q = nexttoken(&p); /* last failed auth */ 30272445Sassar q = nexttoken(&p); /* fail auth count */ 30372445Sassar for(i = 0; i < num_tl_data; i++) { 30472445Sassar unsigned long val; 30572445Sassar int tl_type, tl_length; 30672445Sassar unsigned char *buf; 30772445Sassar krb5_principal princ; 30872445Sassar 30972445Sassar tl_type = getint(&p); /* data type */ 31072445Sassar tl_length = getint(&p); /* data length */ 31172445Sassar 312178825Sdfr#define mit_KRB5_TL_LAST_PWD_CHANGE 1 313178825Sdfr#define mit_KRB5_TL_MOD_PRINC 2 31472445Sassar switch(tl_type) { 315178825Sdfr case mit_KRB5_TL_MOD_PRINC: 31672445Sassar buf = malloc(tl_length); 317178825Sdfr if (buf == NULL) 318178825Sdfr errx(ENOMEM, "malloc"); 31972445Sassar getdata(&p, buf, tl_length); /* data itself */ 32072445Sassar val = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24); 321178825Sdfr ret = krb5_parse_name(pd->context, (char *)buf + 4, &princ); 32272445Sassar free(buf); 323178825Sdfr ALLOC(ent.entry.modified_by); 324178825Sdfr ent.entry.modified_by->time = val; 325178825Sdfr ent.entry.modified_by->principal = princ; 32672445Sassar break; 32772445Sassar default: 32872445Sassar nexttoken(&p); 32972445Sassar break; 33072445Sassar } 33172445Sassar } 332178825Sdfr ALLOC_SEQ(&ent.entry.keys, num_key_data); 33372445Sassar for(i = 0; i < num_key_data; i++) { 33472445Sassar int key_versions; 33572445Sassar key_versions = getint(&p); /* key data version */ 336178825Sdfr ent.entry.kvno = getint(&p); /* XXX kvno */ 33772445Sassar 338178825Sdfr ALLOC(ent.entry.keys.val[i].mkvno); 339178825Sdfr *ent.entry.keys.val[i].mkvno = 0; 34072445Sassar 34172445Sassar /* key version 0 -- actual key */ 342178825Sdfr ent.entry.keys.val[i].key.keytype = getint(&p); /* key type */ 34372445Sassar tmp = getint(&p); /* key length */ 34472445Sassar /* the first two bytes of the key is the key length -- 34572445Sassar skip it */ 346178825Sdfr krb5_data_alloc(&ent.entry.keys.val[i].key.keyvalue, tmp - 2); 34772445Sassar q = nexttoken(&p); /* key itself */ 348178825Sdfr hex_to_octet_string(q + 4, &ent.entry.keys.val[i].key.keyvalue); 34972445Sassar 35072445Sassar if(key_versions > 1) { 35172445Sassar /* key version 1 -- optional salt */ 352178825Sdfr ALLOC(ent.entry.keys.val[i].salt); 353178825Sdfr ent.entry.keys.val[i].salt->type = getint(&p); /* salt type */ 35472445Sassar tmp = getint(&p); /* salt length */ 35572445Sassar if(tmp > 0) { 356178825Sdfr krb5_data_alloc(&ent.entry.keys.val[i].salt->salt, tmp - 2); 35772445Sassar q = nexttoken(&p); /* salt itself */ 358178825Sdfr hex_to_octet_string(q + 4, 359178825Sdfr &ent.entry.keys.val[i].salt->salt); 36072445Sassar } else { 361178825Sdfr ent.entry.keys.val[i].salt->salt.length = 0; 362178825Sdfr ent.entry.keys.val[i].salt->salt.data = NULL; 36372445Sassar tmp = getint(&p); /* -1, if no data. */ 36472445Sassar } 365178825Sdfr fix_salt(pd->context, &ent.entry, i); 36672445Sassar } 36772445Sassar } 36872445Sassar q = nexttoken(&p); /* extra data */ 36972445Sassar v5_prop(pd->context, NULL, &ent, arg); 37072445Sassar } 371178825Sdfr fclose(f); 37272445Sassar return 0; 37372445Sassar} 374