5 * Author: Tatu Ylonen <ylo@cs.hut.fi>
7 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
10 * Created: Fri Mar 17 17:09:37 1995 ylo
12 * Generic header file for ssh.
21 #include <netinet/in.h> /* For struct sockaddr_in */
22 #include <pwd.h> /* For struct pw */
23 #include <stdarg.h> /* For va_list */
29 * The default cipher used if IDEA is not supported by the remote host. It is
30 * recommended that this be one of the mandatory ciphers (DES, 3DES), though
31 * that is not required.
33 #define SSH_FALLBACK_CIPHER SSH_CIPHER_3DES
35 /* Cipher used for encrypting authentication files. */
36 #define SSH_AUTHFILE_CIPHER SSH_CIPHER_3DES
38 /* Default port number. */
39 #define SSH_DEFAULT_PORT 22
41 /* Maximum number of TCP/IP ports forwarded per direction. */
42 #define SSH_MAX_FORWARDS_PER_DIRECTION 100
45 * Maximum number of RSA authentication identity files that can be specified
46 * in configuration files or on the command line.
48 #define SSH_MAX_IDENTITY_FILES 100
51 * Major protocol version. Different version indicates major incompatiblity
52 * that prevents communication.
54 #define PROTOCOL_MAJOR 1
57 * Minor protocol version. Different version indicates minor incompatibility
58 * that does not prevent interoperation.
60 #define PROTOCOL_MINOR 5
63 * Name for the service. The port named by this service overrides the
64 * default port if present.
66 #define SSH_SERVICE_NAME "ssh"
73 #define PIDDIR "/var/run"
77 * System-wide file containing host keys of known hosts. This file should be
80 #define SSH_SYSTEM_HOSTFILE ETCDIR "/ssh_known_hosts"
83 * Of these, ssh_host_key must be readable only by root, whereas ssh_config
84 * should be world-readable.
86 #define HOST_KEY_FILE ETCDIR "/ssh_host_key"
87 #define SERVER_CONFIG_FILE ETCDIR "/sshd_config"
88 #define HOST_CONFIG_FILE ETCDIR "/ssh_config"
91 #define SSH_PROGRAM "/usr/bin/ssh"
92 #endif /* SSH_PROGRAM */
95 #define LOGIN_PROGRAM "/usr/bin/login"
96 #endif /* LOGIN_PROGRAM */
98 #ifndef ASKPASS_PROGRAM
99 #define ASKPASS_PROGRAM "/usr/lib/ssh/ssh-askpass"
100 #endif /* ASKPASS_PROGRAM */
103 * The process id of the daemon listening for connections is saved here to
104 * make it easier to kill the correct daemon when necessary.
106 #define SSH_DAEMON_PID_FILE PIDDIR "/sshd.pid"
109 * The directory in user\'s home directory in which the files reside. The
110 * directory should be world-readable (though not all files are).
112 #define SSH_USER_DIR ".ssh"
115 * Per-user file containing host keys of known hosts. This file need not be
116 * readable by anyone except the user him/herself, though this does not
117 * contain anything particularly secret.
119 #define SSH_USER_HOSTFILE "~/.ssh/known_hosts"
122 * Name of the default file containing client-side authentication key. This
123 * file should only be readable by the user him/herself.
125 #define SSH_CLIENT_IDENTITY ".ssh/identity"
128 * Configuration file in user\'s home directory. This file need not be
129 * readable by anyone but the user him/herself, but does not contain anything
130 * particularly secret. If the user\'s home directory resides on an NFS
131 * volume where root is mapped to nobody, this may need to be world-readable.
133 #define SSH_USER_CONFFILE ".ssh/config"
136 * File containing a list of those rsa keys that permit logging in as this
137 * user. This file need not be readable by anyone but the user him/herself,
138 * but does not contain anything particularly secret. If the user\'s home
139 * directory resides on an NFS volume where root is mapped to nobody, this
140 * may need to be world-readable. (This file is read by the daemon which is
143 #define SSH_USER_PERMITTED_KEYS ".ssh/authorized_keys"
146 * Per-user and system-wide ssh "rc" files. These files are executed with
147 * /bin/sh before starting the shell or command if they exist. They will be
148 * passed "proto cookie" as arguments if X11 forwarding with spoofing is in
149 * use. xauth will be run if neither of these exists.
151 #define SSH_USER_RC ".ssh/rc"
152 #define SSH_SYSTEM_RC ETCDIR "/sshrc"
155 * Ssh-only version of /etc/hosts.equiv. Additionally, the daemon may use
156 * ~/.rhosts and /etc/hosts.equiv if rhosts authentication is enabled.
158 #define SSH_HOSTS_EQUIV ETCDIR "/shosts.equiv"
161 * Name of the environment variable containing the pathname of the
162 * authentication socket.
164 #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
167 * Name of the environment variable containing the pathname of the
168 * authentication socket.
170 #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID"
173 * Default path to ssh-askpass used by ssh-add,
174 * environment variable for overwriting the default location
176 #define SSH_ASKPASS_DEFAULT "/usr/X11R6/bin/ssh-askpass"
177 #define SSH_ASKPASS_ENV "SSH_ASKPASS"
180 * Force host key length and server key length to differ by at least this
181 * many bits. This is to make double encryption with rsaref work.
183 #define SSH_KEY_BITS_RESERVED 128
186 * Length of the session key in bytes. (Specified as 256 bits in the
189 #define SSH_SESSION_KEY_LENGTH 32
191 /* Name of Kerberos service for SSH to use. */
192 #define KRB4_SERVICE_NAME "rcmd"
195 * Authentication methods. New types can be added, but old types should not
196 * be removed for compatibility. The maximum allowed value is 31.
198 #define SSH_AUTH_RHOSTS 1
199 #define SSH_AUTH_RSA 2
200 #define SSH_AUTH_PASSWORD 3
201 #define SSH_AUTH_RHOSTS_RSA 4
202 #define SSH_AUTH_TIS 5
203 #define SSH_AUTH_KERBEROS 6
204 #define SSH_PASS_KERBEROS_TGT 7
205 /* 8 to 15 are reserved */
206 #define SSH_PASS_AFS_TOKEN 21
208 /* Protocol flags. These are bit masks. */
209 #define SSH_PROTOFLAG_SCREEN_NUMBER 1 /* X11 forwarding includes screen */
210 #define SSH_PROTOFLAG_HOST_IN_FWD_OPEN 2 /* forwarding opens contain host */
213 * Definition of message types. New values can be added, but old values
214 * should not be removed or without careful consideration of the consequences
215 * for compatibility. The maximum value is 254; value 255 is reserved for
218 /* Message name */ /* msg code */ /* arguments */
219 #define SSH_MSG_NONE 0 /* no message */
220 #define SSH_MSG_DISCONNECT 1 /* cause (string) */
221 #define SSH_SMSG_PUBLIC_KEY 2 /* ck,msk,srvk,hostk */
222 #define SSH_CMSG_SESSION_KEY 3 /* key (BIGNUM) */
223 #define SSH_CMSG_USER 4 /* user (string) */
224 #define SSH_CMSG_AUTH_RHOSTS 5 /* user (string) */
225 #define SSH_CMSG_AUTH_RSA 6 /* modulus (BIGNUM) */
226 #define SSH_SMSG_AUTH_RSA_CHALLENGE 7 /* int (BIGNUM) */
227 #define SSH_CMSG_AUTH_RSA_RESPONSE 8 /* int (BIGNUM) */
228 #define SSH_CMSG_AUTH_PASSWORD 9 /* pass (string) */
229 #define SSH_CMSG_REQUEST_PTY 10 /* TERM, tty modes */
230 #define SSH_CMSG_WINDOW_SIZE 11 /* row,col,xpix,ypix */
231 #define SSH_CMSG_EXEC_SHELL 12 /* */
232 #define SSH_CMSG_EXEC_CMD 13 /* cmd (string) */
233 #define SSH_SMSG_SUCCESS 14 /* */
234 #define SSH_SMSG_FAILURE 15 /* */
235 #define SSH_CMSG_STDIN_DATA 16 /* data (string) */
236 #define SSH_SMSG_STDOUT_DATA 17 /* data (string) */
237 #define SSH_SMSG_STDERR_DATA 18 /* data (string) */
238 #define SSH_CMSG_EOF 19 /* */
239 #define SSH_SMSG_EXITSTATUS 20 /* status (int) */
240 #define SSH_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* channel (int) */
241 #define SSH_MSG_CHANNEL_OPEN_FAILURE 22 /* channel (int) */
242 #define SSH_MSG_CHANNEL_DATA 23 /* ch,data (int,str) */
243 #define SSH_MSG_CHANNEL_CLOSE 24 /* channel (int) */
244 #define SSH_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* channel (int) */
245 /* SSH_CMSG_X11_REQUEST_FORWARDING 26 OBSOLETE */
246 #define SSH_SMSG_X11_OPEN 27 /* channel (int) */
247 #define SSH_CMSG_PORT_FORWARD_REQUEST 28 /* p,host,hp (i,s,i) */
248 #define SSH_MSG_PORT_OPEN 29 /* ch,h,p (i,s,i) */
249 #define SSH_CMSG_AGENT_REQUEST_FORWARDING 30 /* */
250 #define SSH_SMSG_AGENT_OPEN 31 /* port (int) */
251 #define SSH_MSG_IGNORE 32 /* string */
252 #define SSH_CMSG_EXIT_CONFIRMATION 33 /* */
253 #define SSH_CMSG_X11_REQUEST_FORWARDING 34 /* proto,data (s,s) */
254 #define SSH_CMSG_AUTH_RHOSTS_RSA 35 /* user,mod (s,mpi) */
255 #define SSH_MSG_DEBUG 36 /* string */
256 #define SSH_CMSG_REQUEST_COMPRESSION 37 /* level 1-9 (int) */
257 #define SSH_CMSG_MAX_PACKET_SIZE 38 /* size 4k-1024k (int) */
258 #define SSH_CMSG_AUTH_TIS 39 /* we use this for s/key */
259 #define SSH_SMSG_AUTH_TIS_CHALLENGE 40 /* challenge (string) */
260 #define SSH_CMSG_AUTH_TIS_RESPONSE 41 /* response (string) */
261 #define SSH_CMSG_AUTH_KERBEROS 42 /* (KTEXT) */
262 #define SSH_SMSG_AUTH_KERBEROS_RESPONSE 43 /* (KTEXT) */
263 #define SSH_CMSG_HAVE_KERBEROS_TGT 44 /* credentials (s) */
264 #define SSH_CMSG_HAVE_AFS_TOKEN 65 /* token (s) */
266 /*------------ definitions for login.c -------------*/
269 * Returns the time when the user last logged in. Returns 0 if the
270 * information is not available. This must be called before record_login.
271 * The host from which the user logged in is stored in buf.
274 get_last_login_time(uid_t uid, const char *logname,
275 char *buf, unsigned int bufsize);
278 * Records that the user has logged in. This does many things normally done
282 record_login(int pid, const char *ttyname, const char *user, uid_t uid,
283 const char *host, struct sockaddr_in * addr);
286 * Records that the user has logged out. This does many thigs normally done
287 * by login(1) or init.
289 void record_logout(int pid, const char *ttyname);
291 /*------------ definitions for sshconnect.c ----------*/
294 * Opens a TCP/IP connection to the remote server on the given host. If port
295 * is 0, the default port will be used. If anonymous is zero, a privileged
296 * port will be allocated to make the connection. This requires super-user
297 * privileges if anonymous is false. Connection_attempts specifies the
298 * maximum number of tries, one per second. This returns true on success,
299 * and zero on failure. If the connection is successful, this calls
300 * packet_set_connection for the connection.
303 ssh_connect(const char *host, struct sockaddr_in * hostaddr,
304 u_short port, int connection_attempts,
305 int anonymous, uid_t original_real_uid,
306 const char *proxy_command);
309 * Starts a dialog with the server, and authenticates the current user on the
310 * server. This does not need any extra privileges. The basic connection to
311 * the server must already have been established before this is called. If
312 * login fails, this function prints an error and never returns. This
313 * initializes the random state, and leaves it initialized (it will also have
314 * references from the packet module).
318 ssh_login(int host_key_valid, RSA * host_key, const char *host,
319 struct sockaddr_in * hostaddr, uid_t original_real_uid);
321 /*------------ Definitions for various authentication methods. -------*/
324 * Tries to authenticate the user using the .rhosts file. Returns true if
325 * authentication succeeds. If ignore_rhosts is non-zero, this will not
326 * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
328 int auth_rhosts(struct passwd * pw, const char *client_user);
331 * Tries to authenticate the user using the .rhosts file and the host using
332 * its host key. Returns true if authentication succeeds.
335 auth_rhosts_rsa(struct passwd * pw, const char *client_user,
336 BIGNUM * client_host_key_e, BIGNUM * client_host_key_n);
339 * Tries to authenticate the user using password. Returns true if
340 * authentication succeeds.
342 int auth_password(struct passwd * pw, const char *password);
345 * Performs the RSA authentication dialog with the client. This returns 0 if
346 * the client could not be authenticated, and 1 if authentication was
347 * successful. This may exit if there is a serious protocol violation.
349 int auth_rsa(struct passwd * pw, BIGNUM * client_n);
352 * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
353 * over the key. Skips any whitespace at the beginning and at end.
355 int auth_rsa_read_key(char **cpp, unsigned int *bitsp, BIGNUM * e, BIGNUM * n);
358 * Returns the name of the machine at the other end of the socket. The
359 * returned string should be freed by the caller.
361 char *get_remote_hostname(int socket);
364 * Return the canonical name of the host in the other side of the current
365 * connection (as returned by packet_get_connection). The host name is
366 * cached, so it is efficient to call this several times.
368 const char *get_canonical_hostname(void);
371 * Returns the remote IP address as an ascii string. The value need not be
372 * freed by the caller.
374 const char *get_remote_ipaddr(void);
376 /* Returns the port number of the peer of the socket. */
377 int get_peer_port(int sock);
379 /* Returns the port number of the remote host. */
380 int get_remote_port(void);
383 * Tries to match the host name (which must be in all lowercase) against the
384 * comma-separated sequence of subpatterns (each possibly preceded by ! to
385 * indicate negation). Returns true if there is a positive match; zero
388 int match_hostname(const char *host, const char *pattern, unsigned int len);
391 * Checks whether the given host is already in the list of our known hosts.
392 * Returns HOST_OK if the host is known and has the specified key, HOST_NEW
393 * if the host is not known, and HOST_CHANGED if the host is known but used
394 * to have a different host key. The host must be in all lowercase.
397 HOST_OK, HOST_NEW, HOST_CHANGED
400 check_host_in_hostfile(const char *filename, const char *host,
401 BIGNUM * e, BIGNUM * n, BIGNUM * ke, BIGNUM * kn);
404 * Appends an entry to the host file. Returns false if the entry could not
408 add_host_to_hostfile(const char *filename, const char *host,
409 BIGNUM * e, BIGNUM * n);
412 * Performs the RSA authentication challenge-response dialog with the client,
413 * and returns true (non-zero) if the client gave the correct answer to our
414 * challenge; returns zero if the client gives a wrong answer.
416 int auth_rsa_challenge_dialog(BIGNUM * e, BIGNUM * n);
419 * Reads a passphrase from /dev/tty with echo turned off. Returns the
420 * passphrase (allocated with xmalloc). Exits if EOF is encountered. If
421 * from_stdin is true, the passphrase will be read from stdin instead.
423 char *read_passphrase(const char *prompt, int from_stdin);
426 * Saves the authentication (private) key in a file, encrypting it with
427 * passphrase. The identification of the file (lowest 64 bits of n) will
428 * precede the key to provide identification of the key without needing a
432 save_private_key(const char *filename, const char *passphrase,
433 RSA * private_key, const char *comment);
436 * Loads the public part of the key file (public key and comment). Returns 0
437 * if an error occurred; zero if the public key was successfully read. The
438 * comment of the key is returned in comment_return if it is non-NULL; the
439 * caller must free the value with xfree.
442 load_public_key(const char *filename, RSA * pub,
443 char **comment_return);
446 * Loads the private key from the file. Returns 0 if an error is encountered
447 * (file does not exist or is not readable, or passphrase is bad). This
448 * initializes the private key. The comment of the key is returned in
449 * comment_return if it is non-NULL; the caller must free the value with
453 load_private_key(const char *filename, const char *passphrase,
454 RSA * private_key, char **comment_return);
456 /*------------ Definitions for logging. -----------------------*/
458 /* Supported syslog facilities and levels. */
460 SYSLOG_FACILITY_DAEMON,
461 SYSLOG_FACILITY_USER,
462 SYSLOG_FACILITY_AUTH,
463 SYSLOG_FACILITY_LOCAL0,
464 SYSLOG_FACILITY_LOCAL1,
465 SYSLOG_FACILITY_LOCAL2,
466 SYSLOG_FACILITY_LOCAL3,
467 SYSLOG_FACILITY_LOCAL4,
468 SYSLOG_FACILITY_LOCAL5,
469 SYSLOG_FACILITY_LOCAL6,
470 SYSLOG_FACILITY_LOCAL7
478 SYSLOG_LEVEL_VERBOSE,
481 /* Initializes logging. */
482 void log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr);
484 /* Logging implementation, depending on server or client */
485 void do_log(LogLevel level, const char *fmt, va_list args);
487 /* name to facility/level */
488 SyslogFacility log_facility_number(char *name);
489 LogLevel log_level_number(char *name);
491 /* Output a message to syslog or stderr */
492 void fatal(const char *fmt,...) __attribute__((format(printf, 1, 2)));
493 void error(const char *fmt,...) __attribute__((format(printf, 1, 2)));
494 void log(const char *fmt,...) __attribute__((format(printf, 1, 2)));
495 void verbose(const char *fmt,...) __attribute__((format(printf, 1, 2)));
496 void debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
498 /* same as fatal() but w/o logging */
499 void fatal_cleanup(void);
502 * Registers a cleanup function to be called by fatal()/fatal_cleanup()
503 * before exiting. It is permissible to call fatal_remove_cleanup for the
504 * function itself from the function.
506 void fatal_add_cleanup(void (*proc) (void *context), void *context);
508 /* Removes a cleanup function to be called at fatal(). */
509 void fatal_remove_cleanup(void (*proc) (void *context), void *context);
511 /*---------------- definitions for channels ------------------*/
513 /* Sets specific protocol options. */
514 void channel_set_options(int hostname_in_open);
517 * Allocate a new channel object and set its type and socket. Remote_name
518 * must have been allocated with xmalloc; this will free it when the channel
521 int channel_allocate(int type, int sock, char *remote_name);
523 /* Free the channel and close its socket. */
524 void channel_free(int channel);
526 /* Add any bits relevant to channels in select bitmasks. */
527 void channel_prepare_select(fd_set * readset, fd_set * writeset);
530 * After select, perform any appropriate operations for channels which have
533 void channel_after_select(fd_set * readset, fd_set * writeset);
535 /* If there is data to send to the connection, send some of it now. */
536 void channel_output_poll(void);
539 * This is called when a packet of type CHANNEL_DATA has just been received.
540 * The message type has already been consumed, but channel number and data is
543 void channel_input_data(int payload_len);
545 /* Returns true if no channel has too much buffered data. */
546 int channel_not_very_much_buffered_data(void);
548 /* This is called after receiving CHANNEL_CLOSE. */
549 void channel_input_close(void);
551 /* This is called after receiving CHANNEL_CLOSE_CONFIRMATION. */
552 void channel_input_close_confirmation(void);
554 /* This is called after receiving CHANNEL_OPEN_CONFIRMATION. */
555 void channel_input_open_confirmation(void);
557 /* This is called after receiving CHANNEL_OPEN_FAILURE from the other side. */
558 void channel_input_open_failure(void);
560 /* This closes any sockets that are listening for connections; this removes
561 any unix domain sockets. */
562 void channel_stop_listening(void);
565 * Closes the sockets of all channels. This is used to close extra file
566 * descriptors after a fork.
568 void channel_close_all(void);
570 /* Returns the maximum file descriptor number used by the channels. */
571 int channel_max_fd(void);
573 /* Returns true if there is still an open channel over the connection. */
574 int channel_still_open(void);
577 * Returns a string containing a list of all open channels. The list is
578 * suitable for displaying to the user. It uses crlf instead of newlines.
579 * The caller should free the string with xfree.
581 char *channel_open_message(void);
584 * Initiate forwarding of connections to local port "port" through the secure
585 * channel to host:port from remote side. This never returns if there was an
589 channel_request_local_forwarding(u_short port, const char *host,
590 u_short remote_port);
593 * Initiate forwarding of connections to port "port" on remote host through
594 * the secure channel to host:port from local side. This never returns if
595 * there was an error. This registers that open requests for that port are
599 channel_request_remote_forwarding(u_short port, const char *host,
600 u_short remote_port);
603 * Permits opening to any host/port in SSH_MSG_PORT_OPEN. This is usually
604 * called by the server, because the user could connect to any port anyway,
605 * and the server has no way to know but to trust the client anyway.
607 void channel_permit_all_opens(void);
610 * This is called after receiving CHANNEL_FORWARDING_REQUEST. This initates
611 * listening for the port, and sends back a success reply (or disconnect
612 * message if there was an error). This never returns if there was an error.
614 void channel_input_port_forward_request(int is_root);
617 * This is called after receiving PORT_OPEN message. This attempts to
618 * connect to the given host:port, and sends back CHANNEL_OPEN_CONFIRMATION
619 * or CHANNEL_OPEN_FAILURE.
621 void channel_input_port_open(int payload_len);
624 * Creates a port for X11 connections, and starts listening for it. Returns
625 * the display name, or NULL if an error was encountered.
627 char *x11_create_display(int screen);
630 * Creates an internet domain socket for listening for X11 connections.
631 * Returns a suitable value for the DISPLAY variable, or NULL if an error
634 char *x11_create_display_inet(int screen);
637 * This is called when SSH_SMSG_X11_OPEN is received. The packet contains
638 * the remote channel number. We should do whatever we want, and respond
639 * with either SSH_MSG_OPEN_CONFIRMATION or SSH_MSG_OPEN_FAILURE.
641 void x11_input_open(int payload_len);
644 * Requests forwarding of X11 connections. This should be called on the
647 void x11_request_forwarding(void);
650 * Requests forwarding for X11 connections, with authentication spoofing.
651 * This should be called in the client only.
653 void x11_request_forwarding_with_spoofing(const char *proto, const char *data);
655 /* Sends a message to the server to request authentication fd forwarding. */
656 void auth_request_forwarding(void);
659 * Returns the name of the forwarded authentication socket. Returns NULL if
660 * there is no forwarded authentication socket. The returned value points to
663 char *auth_get_socket_name(void);
666 * This if called to process SSH_CMSG_AGENT_REQUEST_FORWARDING on the server.
667 * This starts forwarding authentication requests.
669 void auth_input_request_forwarding(struct passwd * pw);
671 /* This is called to process an SSH_SMSG_AGENT_OPEN message. */
672 void auth_input_open_request(void);
675 * Returns true if the given string matches the pattern (which may contain ?
676 * and * as wildcards), and zero if it does not match.
678 int match_pattern(const char *s, const char *pattern);
681 * Expands tildes in the file name. Returns data allocated by xmalloc.
682 * Warning: this calls getpw*.
684 char *tilde_expand_filename(const char *filename, uid_t my_uid);
687 * Performs the interactive session. This handles data transmission between
688 * the client and the program. Note that the notion of stdin, stdout, and
689 * stderr in this function is sort of reversed: this function writes to stdin
690 * (of the child program), and reads from stdout and stderr (of the child
693 void server_loop(int pid, int fdin, int fdout, int fderr);
695 /* Client side main loop for the interactive session. */
696 int client_loop(int have_pty, int escape_char);
698 /* Linked list of custom environment strings (see auth-rsa.c). */
700 struct envstring *next;
707 * Performs Kerberos v4 mutual authentication with the client. This returns 0
708 * if the client could not be authenticated, and 1 if authentication was
709 * successful. This may exit if there is a serious protocol violation.
711 int auth_krb4(const char *server_user, KTEXT auth, char **client);
712 int krb4_init(uid_t uid);
713 void krb4_cleanup_proc(void *ignore);
714 int auth_krb4_password(struct passwd * pw, const char *password);
719 /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
720 int auth_kerberos_tgt(struct passwd * pw, const char *string);
721 int auth_afs_token(struct passwd * pw, const char *token_string);
723 int creds_to_radix(CREDENTIALS * creds, unsigned char *buf);
724 int radix_to_creds(const char *buf, CREDENTIALS * creds);
731 char *skey_fake_keyinfo(char *username);
732 int auth_skey_password(struct passwd * pw, const char *password);