Exemplo n.º 1
0
static afs_int32
read_pass(char *passwd, int len, char *prompt, int verify)
{
    afs_int32 code;
    code = read_pw_string(passwd, len, prompt, verify);
    if (code == -1) {
	getpipepass(passwd, len);
	return 0;
    }
    return code;
}
Exemplo n.º 2
0
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;
}
Exemplo n.º 3
0
int
CommandProc(struct cmd_syndesc *as, void *arock)
{
    char name[MAXKTCNAMELEN] = "";
    char instance[MAXKTCNAMELEN] = "";
    char cell[MAXKTCREALMLEN] = "";
    char realm[MAXKTCREALMLEN] = "";
    afs_int32 serverList[MAXSERVERS];
    char *lcell;		/* local cellname */
    int code;
    int i;

    struct ubik_client *conn = 0;
    struct ktc_encryptionKey key;
    struct ktc_encryptionKey mitkey;
    struct ktc_encryptionKey newkey;
    struct ktc_encryptionKey newmitkey;

    struct ktc_token token;

    struct passwd pwent;
    struct passwd *pw = &pwent;

    int insist;			/* insist on good password quality */
    int lexplicit = 0;		/* servers specified explicitly */
    int local;			/* explicit cell is same a local cell */
    int foundPassword = 0;	/*Not yet, anyway */
    int foundNewPassword = 0;	/*Not yet, anyway */
    int foundExplicitCell = 0;	/*Not yet, anyway */
#ifdef DEFAULT_MITV4_STRINGTOKEY
    int dess2k = 1;
#elif DEFAULT_AFS_STRINGTOKEY
    int dess2k = 0;
#else
    int dess2k = -1;
#endif

    /* blow away command line arguments */
    for (i = 1; i < zero_argc; i++)
	memset(zero_argv[i], 0, strlen(zero_argv[i]));
    zero_argc = 0;

    /* first determine quiet flag based on -pipe switch */
    Pipe = (as->parms[aPIPE].items ? 1 : 0);

#if TIMEOUT
    signal(SIGALRM, timedout);
    alarm(30);
#endif

    code = ka_Init(0);
    if (code || !(lcell = ka_LocalCell())) {
#ifndef AFS_FREELANCE_CLIENT
	if (!Pipe)
	    afs_com_err(rn, code, "Can't get local cell name!");
	exit(1);
#endif
    }

    code = rx_Init(0);
    if (code) {
	if (!Pipe)
	    afs_com_err(rn, code, "Failed to initialize Rx");
	exit(1);
    }

    strcpy(instance, "");

    /* Parse our arguments. */

    if (as->parms[aCELL].items) {
	/*
	 * cell name explicitly mentioned; take it in if no other cell name
	 * has already been specified and if the name actually appears.  If
	 * the given cell name differs from our own, we don't do a lookup.
	 */
	foundExplicitCell = 1;
	strncpy(realm, as->parms[aCELL].items->data, sizeof(realm));
    }

    if (as->parms[aSERVERS].items) {
	/* explicit server list */
	int i;
	struct cmd_item *ip;
	char *ap[MAXSERVERS + 2];

	for (ip = as->parms[aSERVERS].items, i = 2; ip; ip = ip->next, i++)
	    ap[i] = ip->data;
	ap[0] = "";
	ap[1] = "-servers";
	code = ubik_ParseClientList(i, ap, serverList);
	if (code) {
	    if (!Pipe)
		afs_com_err(rn, code, "could not parse server list");
	    return code;
	}
	lexplicit = 1;
    }

    if (as->parms[aPRINCIPAL].items) {
	ka_ParseLoginName(as->parms[aPRINCIPAL].items->data, name, instance,
			  cell);
	if (strlen(instance) > 0)
	    if (!Pipe)
		fprintf(stderr,
			"Non-null instance (%s) may cause strange behavior.\n",
			instance);
	if (strlen(cell) > 0) {
	    if (foundExplicitCell) {
		if (!Pipe)
		    fprintf(stderr,
			    "%s: May not specify an explicit cell twice.\n",
			    rn);
		return -1;
	    }
	    foundExplicitCell = 1;
	    strncpy(realm, cell, sizeof(realm));
	}
	pw->pw_name = name;
    } else {
	/* No explicit name provided: use Unix uid. */
#ifdef AFS_NT40_ENV
	userNameLen = 128;
	if (GetUserName(userName, &userNameLen) == 0) {
	    if (!Pipe) {
		fprintf(stderr,
			"Can't figure out your name in local cell %s from your user id.\n",
			lcell);
		fprintf(stderr, "Try providing the user name.\n");
	    }
	    exit(1);
	}
	pw->pw_name = userName;
#else
	pw = getpwuid(getuid());
	if (pw == 0) {
	    if (!Pipe) {
		fprintf(stderr,
			"Can't figure out your name in local cell %s from your user id.\n",
			lcell);
		fprintf(stderr, "Try providing the user name.\n");
	    }
	    exit(1);
	}
#endif
    }

    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!
	 */
	foundPassword = 1;
	strncpy(passwd, as->parms[aPASSWORD].items->data, sizeof(passwd));
	memset(as->parms[aPASSWORD].items->data, 0,
	       strlen(as->parms[aPASSWORD].items->data));
    }

    if (as->parms[aNEWPASSWORD].items) {
	/*
	 * Current argument is the new password string.  Remember it in
	 * our local buffer, and zero out the argument string - anyone can
	 * see it there with ps!
	 */
	foundNewPassword = 1;
	strncpy(npasswd, as->parms[aNEWPASSWORD].items->data,
		sizeof(npasswd));
	memset(as->parms[aNEWPASSWORD].items->data, 0,
	       strlen(as->parms[aNEWPASSWORD].items->data));
    }
#ifdef AFS_FREELANCE_CLIENT
    if (!foundExplicitCell && !lcell) {
	if (!Pipe)
	    afs_com_err(rn, code, "no cell name provided");
	exit(1);
    }
#else
    if (!foundExplicitCell)
	strcpy(realm, lcell);
#endif /* freelance */

    if ((code = ka_CellToRealm(realm, realm, &local))) {
	if (!Pipe)
	    afs_com_err(rn, code, "Can't convert cell to realm");
	exit(1);
    }
    lcstring(cell, realm, sizeof(cell));

    ka_PrintUserID("Changing password for '", pw->pw_name, instance, "'");
    printf(" in cell '%s'.\n", cell);

    /* Get the password if it wasn't provided. */
    if (!foundPassword) {
	if (Pipe)
	    getpipepass(passwd, sizeof(passwd));
	else {
	    code = read_pass(passwd, sizeof(passwd), "Old password: "******"reading password");
		exit(1);
	    }
	}
    }
    ka_StringToKey(passwd, realm, &key);
    des_string_to_key(passwd, ktc_to_cblockptr(&mitkey));
    give_to_child(passwd);

    /* Get new password if it wasn't provided. */
    insist = 0;
    if (!foundNewPassword) {
	if (Pipe)
	    getpipepass(npasswd, sizeof(npasswd));
	else {
	    do {
		code =
		    read_pass(npasswd, sizeof(npasswd),
			      "New password (RETURN to abort): ", 0);
		if (code || (strlen(npasswd) == 0)) {
		    if (code)
			code = KAREADPW;
		    goto no_change;

		}
	    } while (password_bad(npasswd));

	    code =
		read_pass(verify, sizeof(verify), "Retype new password: "******"Mismatch - ");
		goto no_change;
	    }
	    memset(verify, 0, sizeof(verify));
	}
    }
    if ((code = password_bad(npasswd))) {	/* assmt here! */
	goto no_change_no_msg;
    }
#if TRUNCATEPASSWORD
    if (strlen(npasswd) > 8) {
	npasswd[8] = 0;
	fprintf(stderr,
		"%s: password too long, only the first 8 chars will be used.\n",
		rn);
    } else
	npasswd[8] = 0;		/* in case the password was exactly 8 chars long */
#endif
    ka_StringToKey(npasswd, realm, &newkey);
    des_string_to_key(npasswd, ktc_to_cblockptr(&newmitkey));
    memset(npasswd, 0, sizeof(npasswd));

    if (lexplicit)
	ka_ExplicitCell(realm, serverList);

    /* Get an connection to kaserver's admin service in desired cell.  Set the
     * lifetime above the time uncertainty so that badly skewed clocks are
     * reported when the ticket is decrypted.  Then give us 10 seconds to
     * actually get our work done if the clocks are skewed by only 14:59.
     * NOTE: Kerberos lifetime encoding will round this up to next 5 minute
     * interval, namely 20 minutes. */

#define ADMIN_LIFETIME (KTC_TIME_UNCERTAINTY+1)

    code =
	ka_GetAdminToken(pw->pw_name, instance, realm, &key, ADMIN_LIFETIME,
			 &token, /*!new */ 0);
    if (code == KABADREQUEST) {
	code =
	    ka_GetAdminToken(pw->pw_name, instance, realm, &mitkey,
			     ADMIN_LIFETIME, &token, /*!new */ 0);
	if ((code == KABADREQUEST) && (strlen(passwd) > 8)) {
	    /* try with only the first 8 characters incase they set their password
	     * with an old style passwd program. */
	    char pass8[9];
	    strncpy(pass8, passwd, 8);
	    pass8[8] = 0;
	    ka_StringToKey(pass8, realm, &key);
	    memset(pass8, 0, sizeof(pass8));
	    memset(passwd, 0, sizeof(passwd));
	    code = ka_GetAdminToken(pw->pw_name, instance, realm, &key, ADMIN_LIFETIME, &token,	/*!new */
				    0);
#ifdef notdef
	    /* the folks in testing really *hate* this message */
	    if (code == 0) {
		fprintf(stderr,
			"Warning: only the first 8 characters of your old password were significant.\n");
	    }
#endif
	    if (code == 0) {
		if (dess2k == -1)
		    dess2k = 0;
	    }
	} else {
	    if (dess2k == -1)
		dess2k = 1;
	}
    } else {
	if (dess2k == -1)
	    dess2k = 0;
    }

    memset(&mitkey, 0, sizeof(mitkey));
    memset(&key, 0, sizeof(key));
    if (code == KAUBIKCALL)
	afs_com_err(rn, code, "(Authentication Server unavailable, try later)");
    else if (code) {
	if (code == KABADREQUEST)
	    fprintf(stderr, "%s: Incorrect old password.\n", rn);
	else
	    afs_com_err(rn, code, "so couldn't change password");
    } else {
	code =
	    ka_AuthServerConn(realm, KA_MAINTENANCE_SERVICE, &token, &conn);
	if (code)
	    afs_com_err(rn, code, "contacting Admin Server");
	else {
	    if (dess2k == 1)
		code =
		    ka_ChangePassword(pw->pw_name, instance, conn, 0,
				      &newmitkey);
	    else
		code =
		    ka_ChangePassword(pw->pw_name, instance, conn, 0,
				      &newkey);
	    memset(&newkey, 0, sizeof(newkey));
	    memset(&newmitkey, 0, sizeof(newmitkey));
	    if (code) {
		char *reason;
		reason = (char *)afs_error_message(code);
		fprintf(stderr, "%s: Password was not changed because %s\n",
			rn, reason);
	    } else
		printf("Password changed.\n\n");
	}
    }
    memset(&newkey, 0, sizeof(newkey));
    memset(&newmitkey, 0, sizeof(newmitkey));

    /* Might need to close down the ubik_Client connection */
    if (conn) {
	ubik_ClientDestroy(conn);
	conn = 0;
    }
    rx_Finalize();
    terminate_child();
    exit(code);

  no_change:			/* yuck, yuck, yuck */
    if (code)
	afs_com_err(rn, code, "getting new password");
  no_change_no_msg:
    memset(&key, 0, sizeof(key));
    memset(npasswd, 0, sizeof(npasswd));
    printf("Password for '%s' in cell '%s' unchanged.\n\n", pw->pw_name,
	   cell);
    terminate_child();
    exit(code ? code : 1);
}
Exemplo n.º 4
0
afs_int32
InitThisModule(void)
{				/*InitThisModule */
#ifdef USS_KAUTH_DB
    static char rn[] = "uss_kauth:InitThisModule";
#endif
    afs_int32 code;
    char prompt[2 * MAXKTCNAMELEN + 20];
    char *reasonString, longPassBuff[1024], shortPassBuff[9];
    struct ktc_encryptionKey key;
    struct ktc_token token;
    struct ktc_principal Name, tok;

    /*
     * Only call this routine once.
     */
    if (initDone)
	return (0);


    /*
     * Pull out the caller's administrator token if they have one.
     */
    code =
	ka_GetAdminToken(0, 0, uss_Cell, 0, 10 * 60 * 60, &token,
			 0 /*new */ );
    if (code) {
	if (Pipe) {
	    strncpy(longPassBuff, getpipepass(), sizeof(longPassBuff));
	} else {
	    /*
	     * Nope, no admin tokens available.  Get the key based on the
	     * full password and try again.
	     */
	    sprintf(prompt, "Password for '%s", uss_AccountCreator);
	    if (CreatorInstance[0])
		sprintf(prompt + strlen(prompt), ".%s", CreatorInstance);
	    strcat(prompt, "': ");
	    code = ka_UserReadPassword(prompt,	/*Prompt to use */
				       longPassBuff,	/*Long pwd buffer */
				       sizeof(longPassBuff),	/*Size of above */
				       &reasonString);
	    if (code) {
		afs_com_err(uss_whoami, code, "while getting password ");
#ifdef USS_KAUTH_DB
		printf("%s: Error code from ka_UserReadPassword(): %d\n", rn,
		       code);
#endif /* USS_KAUTH_DB */
		return (code);
	    }
	}
	ka_StringToKey(longPassBuff, uss_Cell, &key);
	code =
	    ka_GetAdminToken(uss_AccountCreator, CreatorInstance, uss_Cell,
			     &key, 24 * 60 * 60, &token, 0 /*new */ );
	if (code) {
	    if ((code == KABADREQUEST) && (strlen(longPassBuff) > 8)) {
		/*
		 * The key we provided just doesn't work, yet we
		 * suspect that since the password is greater than 8
		 * chars, it might be the case that we really need
		 * to truncate the password to generate the appropriate
		 * key.
		 */
		afs_com_err(uss_whoami, code,
			"while getting administrator token (trying shortened password next...)");
#ifdef USS_KAUTH_DB
		printf("%s: Error code from ka_GetAdminToken: %d\n", rn,
		       code);
#endif /* USS_KAUTH_DB */
		strncpy(shortPassBuff, longPassBuff, 8);
		shortPassBuff[8] = 0;
		ka_StringToKey(shortPassBuff, uss_Cell, &key);
		code =
		    ka_GetAdminToken(uss_AccountCreator, CreatorInstance,
				     uss_Cell, &key, 24 * 60 * 60, &token,
				     0 /*new */ );
		if (code) {
		    afs_com_err(uss_whoami, code,
			    "while getting administrator token (possibly wrong password, or not an administrative account)");
#ifdef USS_KAUTH_DB
		    printf("%s: Error code from ka_GetAdminToken: %d\n", rn,
			   code);
#endif /* USS_KAUTH_DB */
		    return (code);
		} else {
		    /*
		     * The silly administrator has a long password!  Tell
		     * him or her off in a polite way.
		     */
		    printf
			("%s: Shortened password accepted by the Authentication Server\n",
			 uss_whoami);
		}
	    } /*Try a shorter password */
	    else {
		/*
		 * We failed to get an admin token, but the password is
		 * of a reasonable length, so we're just hosed.
		 */
		afs_com_err(uss_whoami, code,
			"while getting administrator token (possibly wrong password, or not an administrative account)");
#ifdef USS_KAUTH_DB
		printf("%s: Error code from ka_GetAdminToken: %d\n", rn,
		       code);
#endif /* USS_KAUTH_DB */
		return (code);
	    }			/*Even the shorter password didn't work */
	}			/*Key from given password didn't work */
    }

    /*First attempt to get admin token failed */
    /*
     * At this point, we have acquired an administrator token.  Let's
     * proceed to set up a connection to the AuthServer.
     */
#ifdef USS_KAUTH_DB_INSTANCE
    fprintf(stderr,
	    "%s: CreatorInstance after ka_GetAdminToken(): '%s', %d bytes\n",
	    rn, CreatorInstance, strlen(CreatorInstance));
#endif /* USS_KAUTH_DB_INSTANCE */

    /*
     * Set up the connection to the AuthServer read/write site.
     */
    code =
	ka_AuthServerConn(uss_Cell, KA_MAINTENANCE_SERVICE, &token,
			  &uconn_kauthP);
    if (code) {
	afs_com_err(uss_whoami, code,
		"while establishing Authentication Server connection");
#ifdef USS_KAUTH_DB
	printf("%s: Error code from ka_AuthServerConn: %d\n", rn, code);
#endif /* USS_KAUTH_DB */
	return (code);
    }

    if (uss_Administrator[0]) {
	/*
	 * We must check to see if we have local tokens for admin since he'll may do
	 * various pioctl or calls to protection server that require tokens. Remember
	 * to remove this tokens at the end of the program...
	 */
	strcpy(Name.name, "afs");
	Name.instance[0] = '\0';
	strncpy(Name.cell, uss_Cell, sizeof(Name.cell));
	if ((code =
	    ktc_GetToken(&Name, &token, sizeof(struct ktc_token), &tok))) {
	    code =
		ka_UserAuthenticateLife(0, uss_AccountCreator,
					CreatorInstance, uss_Cell,
					longPassBuff, 10 * 60 * 60,
					&reasonString);
	    if (!code)
		doUnlog = 1;
	}
    }

    /*
     * Declare our success.
     */
    initDone = 1;
    return (0);

}				/*InitThisModule */