static int CommandProc(struct cmd_syndesc *as, void *arock) { krb5_principal princ = 0; char *cell, *pname, **hrealms, *service; char service_temp[MAXKTCREALMLEN + 20]; krb5_creds incred[1], mcred[1], *outcred = 0, *afscred; krb5_ccache cc = 0; #ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC krb5_get_init_creds_opt *gic_opts; #else krb5_get_init_creds_opt gic_opts[1]; #endif char *tofree = NULL, *outname; int code; char *what; int i, dosetpag, evil, noprdb, id; #ifdef AFS_RXK5 int authtype; #endif krb5_data enc_part[1]; krb5_prompter_fct pf = NULL; char *pass = 0; void *pa = 0; struct kp_arg klog_arg[1]; char passwd[BUFSIZ]; struct afsconf_cell cellconfig[1]; static char rn[] = "klog"; /*Routine name */ static int Pipe = 0; /* reading from a pipe */ static int Silent = 0; /* Don't want error messages */ int writeTicketFile = 0; /* write ticket file to /tmp */ service = 0; memset(incred, 0, sizeof *incred); /* blow away command line arguments */ for (i = 1; i < zero_argc; i++) memset(zero_argv[i], 0, strlen(zero_argv[i])); zero_argc = 0; memset(klog_arg, 0, sizeof *klog_arg); /* first determine quiet flag based on -silent switch */ Silent = (as->parms[aSILENT].items ? 1 : 0); if (Silent) { afs_set_com_err_hook(silent_errors); } if ((code = krb5_init_context(&k5context))) { afs_com_err(rn, code, "while initializing Kerberos 5 library"); KLOGEXIT(code); } if ((code = rx_Init(0))) { afs_com_err(rn, code, "while initializing rx"); KLOGEXIT(code); } initialize_U_error_table(); /*initialize_krb5_error_table();*/ initialize_RXK_error_table(); initialize_KTC_error_table(); initialize_ACFG_error_table(); /* initialize_rx_error_table(); */ if (!(tdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) { afs_com_err(rn, 0, "can't get afs configuration (afsconf_Open(%s))", AFSDIR_CLIENT_ETC_DIRPATH); KLOGEXIT(1); } /* * Enable DES enctypes, which are currently still required for AFS. * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is * Heimdal. */ #if defined(HAVE_KRB5_ENCTYPE_ENABLE) i = krb5_enctype_valid(k5context, ETYPE_DES_CBC_CRC); if (i) krb5_enctype_enable(k5context, ETYPE_DES_CBC_CRC); #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO) krb5_allow_weak_crypto(k5context, 1); #endif /* Parse remaining arguments. */ dosetpag = !! as->parms[aSETPAG].items; Pipe = !! as->parms[aPIPE].items; writeTicketFile = !! as->parms[aTMP].items; noprdb = !! as->parms[aNOPRDB].items; evil = (always_evil&1) || !! as->parms[aUNWRAP].items; #ifdef AFS_RXK5 authtype = 0; if (as->parms[aK5].items) authtype |= FORCE_RXK5; if (as->parms[aK4].items) authtype |= FORCE_RXKAD; if (!authtype) authtype |= env_afs_rxk5_default(); #endif cell = as->parms[aCELL].items ? as->parms[aCELL].items->data : 0; if ((code = afsconf_GetCellInfo(tdir, cell, "afsprot", cellconfig))) { if (cell) afs_com_err(rn, code, "Can't get cell information for '%s'", cell); else afs_com_err(rn, code, "Can't get determine local cell!"); KLOGEXIT(code); } if (as->parms[aKRBREALM].items) { code = krb5_set_default_realm(k5context, as->parms[aKRBREALM].items->data); if (code) { afs_com_err(rn, code, "Can't make <%s> the default realm", as->parms[aKRBREALM].items->data); KLOGEXIT(code); } } else if ((code = krb5_get_host_realm(k5context, cellconfig->hostName[0], &hrealms))) { afs_com_err(rn, code, "Can't get realm for host <%s> in cell <%s>\n", cellconfig->hostName[0], cellconfig->name); KLOGEXIT(code); } else { if (hrealms && *hrealms) { code = krb5_set_default_realm(k5context, *hrealms); if (code) { afs_com_err(rn, code, "Can't make <%s> the default realm", *hrealms); KLOGEXIT(code); } } if (hrealms) krb5_free_host_realm(k5context, hrealms); } id = getuid(); if (as->parms[aPRINCIPAL].items) { pname = as->parms[aPRINCIPAL].items->data; } else { /* No explicit name provided: use Unix uid. */ struct passwd *pw; pw = getpwuid(id); if (pw == 0) { afs_com_err(rn, 0, "Can't figure out your name from your user id (%d).", id); if (!Silent) fprintf(stderr, "%s: Try providing the user name.\n", rn); KLOGEXIT(1); } pname = pw->pw_name; } code = krb5_parse_name(k5context, pname, &princ); if (code) { afs_com_err(rn, code, "Can't parse principal <%s>", pname); KLOGEXIT(code); } if (as->parms[aPASSWORD].items) { /* * Current argument is the desired password string. Remember it in * our local buffer, and zero out the argument string - anyone can * see it there with ps! */ strncpy(passwd, as->parms[aPASSWORD].items->data, sizeof(passwd)); memset(as->parms[aPASSWORD].items->data, 0, strlen(as->parms[aPASSWORD].items->data)); pass = passwd; } /* Get the password if it wasn't provided. */ if (!pass) { if (Pipe) { strncpy(passwd, getpipepass(), sizeof(passwd)); pass = passwd; } else { pf = klog_prompter; pa = klog_arg; } } service = 0; #ifdef AFS_RXK5 if (authtype & FORCE_RXK5) { tofree = get_afs_krb5_svc_princ(cellconfig); snprintf(service_temp, sizeof service_temp, "%s", tofree); } else #endif snprintf (service_temp, sizeof service_temp, "afs/%s", cellconfig->name); klog_arg->pp = &pass; klog_arg->pstore = passwd; klog_arg->allocated = sizeof(passwd); /* XXX should allow k5 to prompt in most cases -- what about expired pw?*/ #ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC code = krb5_get_init_creds_opt_alloc(k5context, &gic_opts); if (code) { afs_com_err(rn, code, "Can't allocate get_init_creds options"); KLOGEXIT(code); } #else krb5_get_init_creds_opt_init(gic_opts); #endif for (;;) { code = krb5_get_init_creds_password(k5context, incred, princ, pass, pf, /* prompter */ pa, /* data */ 0, /* start_time */ 0, /* in_tkt_service */ gic_opts); if (code != KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN) break; } memset(passwd, 0, sizeof(passwd)); if (code) { char *r = 0; if (krb5_get_default_realm(k5context, &r)) r = 0; if (r) afs_com_err(rn, code, "Unable to authenticate in realm %s", r); else afs_com_err(rn, code, "Unable to authenticate to use cell %s", cellconfig->name); if (r) free(r); KLOGEXIT(code); } for (;;writeTicketFile = 0) { if (writeTicketFile) { what = "getting default ccache"; code = krb5_cc_default(k5context, &cc); } else { what = "krb5_cc_resolve"; code = krb5_cc_resolve(k5context, "MEMORY:core", &cc); if (code) goto Failed; } what = "initializing ccache"; code = krb5_cc_initialize(k5context, cc, princ); if (code) goto Failed; what = "writing Kerberos ticket file"; code = krb5_cc_store_cred(k5context, cc, incred); if (code) goto Failed; if (writeTicketFile) fprintf(stderr, "Wrote ticket file to %s\n", krb5_cc_get_name(k5context, cc)); break; Failed: if (code) afs_com_err(rn, code, "%s", what); if (writeTicketFile) { if (cc) { krb5_cc_close(k5context, cc); cc = 0; } continue; } KLOGEXIT(code); } for (service = service_temp;;service = "afs") { memset(mcred, 0, sizeof *mcred); mcred->client = princ; code = krb5_parse_name(k5context, service, &mcred->server); if (code) { afs_com_err(rn, code, "Unable to parse service <%s>\n", service); KLOGEXIT(code); } if (tofree) { free(tofree); tofree = 0; } if (!(code = krb5_unparse_name(k5context, mcred->server, &outname))) tofree = outname; else outname = service; code = krb5_get_credentials(k5context, 0, cc, mcred, &outcred); krb5_free_principal(k5context, mcred->server); if (code != KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || service != service_temp) break; #ifdef AFS_RXK5 if (authtype & FORCE_RXK5) break; #endif } afscred = outcred; if (code) { afs_com_err(rn, code, "Unable to get credentials to use %s", outname); KLOGEXIT(code); } #ifdef AFS_RXK5 if (authtype & FORCE_RXK5) { struct ktc_principal aserver[1]; int viceid = 555; memset(aserver, 0, sizeof *aserver); strncpy(aserver->cell, cellconfig->name, MAXKTCREALMLEN-1); code = ktc_SetK5Token(k5context, aserver, afscred, viceid, dosetpag); if (code) { afs_com_err(rn, code, "Unable to store tokens for cell %s\n", cellconfig->name); KLOGEXIT(1); } } else #endif { struct ktc_principal aserver[1], aclient[1]; struct ktc_token atoken[1]; memset(atoken, 0, sizeof *atoken); if (evil) { size_t elen = enc_part->length; atoken->kvno = RXKAD_TKT_TYPE_KERBEROS_V5_ENCPART_ONLY; if (afs_krb5_skip_ticket_wrapper(afscred->ticket.data, afscred->ticket.length, (char **) &enc_part->data, &elen)) { afs_com_err(rn, 0, "Can't unwrap %s AFS credential", cellconfig->name); KLOGEXIT(1); } } else { atoken->kvno = RXKAD_TKT_TYPE_KERBEROS_V5; *enc_part = afscred->ticket; } atoken->startTime = afscred->times.starttime; atoken->endTime = afscred->times.endtime; if (tkt_DeriveDesKey(get_creds_enctype(afscred), get_cred_keydata(afscred), get_cred_keylen(afscred), &atoken->sessionKey)) { afs_com_err(rn, 0, "Cannot derive DES key from enctype %i of length %u", get_creds_enctype(afscred), (unsigned)get_cred_keylen(afscred)); KLOGEXIT(1); } memcpy(atoken->ticket, enc_part->data, atoken->ticketLen = enc_part->length); memset(aserver, 0, sizeof *aserver); strncpy(aserver->name, "afs", 4); strncpy(aserver->cell, cellconfig->name, MAXKTCREALMLEN-1); memset(aclient, 0, sizeof *aclient); i = realm_len(k5context, afscred->client); if (i > MAXKTCREALMLEN-1) i = MAXKTCREALMLEN-1; memcpy(aclient->cell, realm_data(k5context, afscred->client), i); if (!noprdb) { int viceid = 0; k5_to_k4_name(k5context, afscred->client, aclient); code = whoami(atoken, cellconfig, aclient, &viceid); if (code) { afs_com_err(rn, code, "Can't get your viceid for cell %s", cellconfig->name); *aclient->name = 0; } else snprintf(aclient->name, MAXKTCNAMELEN-1, "AFS ID %d", viceid); } if (!*aclient->name) k5_to_k4_name(k5context, afscred->client, aclient); code = ktc_SetToken(aserver, atoken, aclient, dosetpag); if (code) { afs_com_err(rn, code, "Unable to store tokens for cell %s\n", cellconfig->name); KLOGEXIT(1); } } krb5_free_principal(k5context, princ); krb5_free_cred_contents(k5context, incred); if (outcred) krb5_free_creds(k5context, outcred); if (cc) krb5_cc_close(k5context, cc); if (tofree) free(tofree); return 0; }
int main(int argc, char **argv) { krb5_error_code ret; krb5_context context; krb5_ccache ccache = NULL; HDB *db = NULL; int optidx = 0; int type, exit_code; setprogname(argv[0]); if(getarg(args, num_args, argc, argv, &optidx)) usage(1); if(help_flag) usage(0); if(version_flag){ print_version(NULL); exit(0); } ret = krb5_init_context(&context); if(ret) exit(1); /* We may be reading an old database encrypted with a DES master key. */ ret = krb5_allow_weak_crypto(context, 1); if(ret) krb5_err(context, 1, ret, "krb5_allow_weak_crypto"); if(local_realm) krb5_set_default_realm(context, local_realm); if(encrypt_flag && decrypt_flag) krb5_errx(context, 1, "only one of `--encrypt' and `--decrypt' is meaningful"); if(source_type != NULL) { type = parse_source_type(source_type); if(type == 0) krb5_errx(context, 1, "unknown source type `%s'", source_type); } else type = HPROP_HEIMDAL; if(!to_stdout) get_creds(context, &ccache); if(decrypt_flag || encrypt_flag) { ret = hdb_read_master_key(context, mkeyfile, &mkey5); if(ret && ret != ENOENT) krb5_err(context, 1, ret, "hdb_read_master_key"); if(ret) krb5_errx(context, 1, "No master key file found"); } switch(type) { case HPROP_MIT_DUMP: if (database == NULL) krb5_errx(context, 1, "no dump file specified"); break; case HPROP_HEIMDAL: ret = hdb_create (context, &db, database); if(ret) krb5_err(context, 1, ret, "hdb_create: %s", database); ret = db->hdb_open(context, db, O_RDONLY, 0); if(ret) krb5_err(context, 1, ret, "db->hdb_open"); break; default: krb5_errx(context, 1, "unknown dump type `%d'", type); break; } if (to_stdout) exit_code = dump_database (context, type, database, db); else exit_code = propagate_database (context, type, database, db, ccache, optidx, argc, argv); if(ccache != NULL) krb5_cc_destroy(context, ccache); if(db != NULL) (*db->hdb_destroy)(context, db); krb5_free_context(context); return exit_code; }
static void test_cf2(krb5_context context) { krb5_error_code ret; krb5_data pw, p1, p2; krb5_salt salt; krb5_keyblock k1, k2, k3; krb5_crypto c1, c2; unsigned int i; unsigned int errors = 0; ret = krb5_allow_weak_crypto(context, 1); if (ret) krb5_err(context, 1, ret, "krb5_allow_weak_crypto"); for (i = 0; i < sizeof(cf2)/sizeof(cf2[0]); i++) { pw.data = cf2[i].p1; pw.length = strlen(cf2[i].p1); salt.salttype = (krb5_salttype)KRB5_PADATA_PW_SALT; salt.saltvalue.data = cf2[i].p1; salt.saltvalue.length = strlen(cf2[i].p1); ret = krb5_string_to_key_data_salt(context, cf2[i].e1, pw, salt, &k1); if (ret) krb5_err(context, 1, ret, "krb5_string_to_key_data_salt"); ret = krb5_crypto_init(context, &k1, 0, &c1); if (ret) krb5_err(context, 1, ret, "krb5_crypto_init"); pw.data = cf2[i].p2; pw.length = strlen(cf2[i].p2); salt.saltvalue.data = cf2[i].p2; salt.saltvalue.length = strlen(cf2[i].p2); ret = krb5_string_to_key_data_salt(context, cf2[i].e2, pw, salt, &k2); if (ret) krb5_err(context, 1, ret, "krb5_string_to_key_data_salt"); ret = krb5_crypto_init(context, &k2, 0, &c2); if (ret) krb5_err(context, 1, ret, "krb5_crypto_init"); p1.data = cf2[i].pepper1; p1.length = strlen(cf2[i].pepper1); p2.data = cf2[i].pepper2; p2.length = strlen(cf2[i].pepper2); ret = krb5_crypto_fx_cf2(context, c1, c2, &p1, &p2, cf2[i].e3, &k3); if (ret == KRB5_PROG_ETYPE_NOSUPP) { krb5_warn(context, ret, "KRB-FX-CF2 not supported for enctype %d", cf2[i].e1); continue; } else if (ret) { krb5_err(context, 1, ret, "krb5_crypto_fx_cf2"); } if (k3.keytype != cf2[i].e3) { errors++; krb5_warnx(context, "length not right for enctype %d", cf2[i].e3); continue; } if (k3.keyvalue.length != cf2[i].len || memcmp(k3.keyvalue.data, cf2[i].key, cf2[i].len) != 0) { errors++; krb5_warnx(context, "key not same for enctypes %d %d %d", cf2[i].e1, cf2[i].e2, cf2[i].e3); continue; } krb5_crypto_destroy(context, c1); krb5_crypto_destroy(context, c2); krb5_free_keyblock_contents(context, &k1); krb5_free_keyblock_contents(context, &k2); krb5_free_keyblock_contents(context, &k3); } if (errors) krb5_errx(context, 1, "%u KRB-FX-CF2 vectors failed", errors); }