Annotation of src/usr.bin/ssh/ssh.h, Revision 1.38
1.1 deraadt 1: /*
1.38 ! markus 2: *
1.25 deraadt 3: * ssh.h
1.38 ! markus 4: *
1.25 deraadt 5: * Author: Tatu Ylonen <ylo@cs.hut.fi>
1.38 ! markus 6: *
1.25 deraadt 7: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
8: * All rights reserved
1.38 ! markus 9: *
1.25 deraadt 10: * Created: Fri Mar 17 17:09:37 1995 ylo
1.38 ! markus 11: *
1.25 deraadt 12: * Generic header file for ssh.
1.38 ! markus 13: *
1.25 deraadt 14: */
1.1 deraadt 15:
1.38 ! markus 16: /* RCSID("$Id: ssh.h,v 1.37 2000/04/12 07:45:44 markus Exp $"); */
1.1 deraadt 17:
18: #ifndef SSH_H
19: #define SSH_H
20:
21: #include "rsa.h"
22: #include "cipher.h"
23:
1.26 markus 24: /*
25: * The default cipher used if IDEA is not supported by the remote host. It is
26: * recommended that this be one of the mandatory ciphers (DES, 3DES), though
27: * that is not required.
28: */
1.1 deraadt 29: #define SSH_FALLBACK_CIPHER SSH_CIPHER_3DES
30:
31: /* Cipher used for encrypting authentication files. */
32: #define SSH_AUTHFILE_CIPHER SSH_CIPHER_3DES
33:
34: /* Default port number. */
35: #define SSH_DEFAULT_PORT 22
36:
37: /* Maximum number of TCP/IP ports forwarded per direction. */
38: #define SSH_MAX_FORWARDS_PER_DIRECTION 100
39:
1.26 markus 40: /*
41: * Maximum number of RSA authentication identity files that can be specified
42: * in configuration files or on the command line.
43: */
1.1 deraadt 44: #define SSH_MAX_IDENTITY_FILES 100
45:
1.26 markus 46: /*
47: * Major protocol version. Different version indicates major incompatiblity
48: * that prevents communication.
1.37 markus 49: *
1.26 markus 50: * Minor protocol version. Different version indicates minor incompatibility
51: * that does not prevent interoperation.
52: */
1.37 markus 53: #define PROTOCOL_MAJOR_1 1
54: #define PROTOCOL_MINOR_1 5
55:
56: /* We support both SSH1 and SSH2 */
57: #define PROTOCOL_MAJOR_2 2
58: #define PROTOCOL_MINOR_2 0
1.1 deraadt 59:
1.26 markus 60: /*
61: * Name for the service. The port named by this service overrides the
62: * default port if present.
63: */
1.1 deraadt 64: #define SSH_SERVICE_NAME "ssh"
65:
1.2 deraadt 66: #define ETCDIR "/etc"
67: #define PIDDIR "/var/run"
68:
1.26 markus 69: /*
70: * System-wide file containing host keys of known hosts. This file should be
71: * world-readable.
72: */
1.1 deraadt 73: #define SSH_SYSTEM_HOSTFILE ETCDIR "/ssh_known_hosts"
74:
1.26 markus 75: /*
76: * Of these, ssh_host_key must be readable only by root, whereas ssh_config
77: * should be world-readable.
78: */
79: #define HOST_KEY_FILE ETCDIR "/ssh_host_key"
80: #define SERVER_CONFIG_FILE ETCDIR "/sshd_config"
81: #define HOST_CONFIG_FILE ETCDIR "/ssh_config"
1.36 markus 82: #define DSA_KEY_FILE ETCDIR "/ssh_dsa_key"
1.2 deraadt 83:
84: #define SSH_PROGRAM "/usr/bin/ssh"
1.1 deraadt 85:
1.26 markus 86: /*
87: * The process id of the daemon listening for connections is saved here to
88: * make it easier to kill the correct daemon when necessary.
89: */
1.1 deraadt 90: #define SSH_DAEMON_PID_FILE PIDDIR "/sshd.pid"
91:
1.26 markus 92: /*
93: * The directory in user\'s home directory in which the files reside. The
94: * directory should be world-readable (though not all files are).
95: */
1.1 deraadt 96: #define SSH_USER_DIR ".ssh"
97:
1.26 markus 98: /*
99: * Per-user file containing host keys of known hosts. This file need not be
100: * readable by anyone except the user him/herself, though this does not
101: * contain anything particularly secret.
102: */
1.1 deraadt 103: #define SSH_USER_HOSTFILE "~/.ssh/known_hosts"
104:
1.26 markus 105: /*
106: * Name of the default file containing client-side authentication key. This
107: * file should only be readable by the user him/herself.
108: */
1.1 deraadt 109: #define SSH_CLIENT_IDENTITY ".ssh/identity"
110:
1.26 markus 111: /*
112: * Configuration file in user\'s home directory. This file need not be
113: * readable by anyone but the user him/herself, but does not contain anything
114: * particularly secret. If the user\'s home directory resides on an NFS
115: * volume where root is mapped to nobody, this may need to be world-readable.
116: */
1.1 deraadt 117: #define SSH_USER_CONFFILE ".ssh/config"
118:
1.26 markus 119: /*
120: * File containing a list of those rsa keys that permit logging in as this
121: * user. This file need not be readable by anyone but the user him/herself,
122: * but does not contain anything particularly secret. If the user\'s home
123: * directory resides on an NFS volume where root is mapped to nobody, this
124: * may need to be world-readable. (This file is read by the daemon which is
125: * running as root.)
126: */
1.1 deraadt 127: #define SSH_USER_PERMITTED_KEYS ".ssh/authorized_keys"
128:
1.26 markus 129: /*
130: * Per-user and system-wide ssh "rc" files. These files are executed with
131: * /bin/sh before starting the shell or command if they exist. They will be
132: * passed "proto cookie" as arguments if X11 forwarding with spoofing is in
133: * use. xauth will be run if neither of these exists.
134: */
1.1 deraadt 135: #define SSH_USER_RC ".ssh/rc"
136: #define SSH_SYSTEM_RC ETCDIR "/sshrc"
137:
1.26 markus 138: /*
139: * Ssh-only version of /etc/hosts.equiv. Additionally, the daemon may use
140: * ~/.rhosts and /etc/hosts.equiv if rhosts authentication is enabled.
141: */
1.1 deraadt 142: #define SSH_HOSTS_EQUIV ETCDIR "/shosts.equiv"
143:
1.26 markus 144: /*
145: * Name of the environment variable containing the pathname of the
146: * authentication socket.
147: */
1.13 markus 148: #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
1.15 markus 149:
1.26 markus 150: /*
151: * Name of the environment variable containing the pathname of the
152: * authentication socket.
153: */
1.15 markus 154: #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID"
1.29 markus 155:
156: /*
157: * Default path to ssh-askpass used by ssh-add,
158: * environment variable for overwriting the default location
159: */
160: #define SSH_ASKPASS_DEFAULT "/usr/X11R6/bin/ssh-askpass"
161: #define SSH_ASKPASS_ENV "SSH_ASKPASS"
1.1 deraadt 162:
1.26 markus 163: /*
164: * Force host key length and server key length to differ by at least this
165: * many bits. This is to make double encryption with rsaref work.
166: */
1.1 deraadt 167: #define SSH_KEY_BITS_RESERVED 128
168:
1.26 markus 169: /*
170: * Length of the session key in bytes. (Specified as 256 bits in the
171: * protocol.)
172: */
1.1 deraadt 173: #define SSH_SESSION_KEY_LENGTH 32
174:
175: /* Name of Kerberos service for SSH to use. */
176: #define KRB4_SERVICE_NAME "rcmd"
177:
1.26 markus 178: /*
179: * Authentication methods. New types can be added, but old types should not
180: * be removed for compatibility. The maximum allowed value is 31.
181: */
1.1 deraadt 182: #define SSH_AUTH_RHOSTS 1
183: #define SSH_AUTH_RSA 2
184: #define SSH_AUTH_PASSWORD 3
185: #define SSH_AUTH_RHOSTS_RSA 4
1.24 markus 186: #define SSH_AUTH_TIS 5
1.1 deraadt 187: #define SSH_AUTH_KERBEROS 6
188: #define SSH_PASS_KERBEROS_TGT 7
1.26 markus 189: /* 8 to 15 are reserved */
1.1 deraadt 190: #define SSH_PASS_AFS_TOKEN 21
191:
192: /* Protocol flags. These are bit masks. */
1.26 markus 193: #define SSH_PROTOFLAG_SCREEN_NUMBER 1 /* X11 forwarding includes screen */
194: #define SSH_PROTOFLAG_HOST_IN_FWD_OPEN 2 /* forwarding opens contain host */
195:
196: /*
197: * Definition of message types. New values can be added, but old values
198: * should not be removed or without careful consideration of the consequences
199: * for compatibility. The maximum value is 254; value 255 is reserved for
200: * future extension.
201: */
202: /* Message name */ /* msg code */ /* arguments */
1.1 deraadt 203: #define SSH_MSG_NONE 0 /* no message */
204: #define SSH_MSG_DISCONNECT 1 /* cause (string) */
205: #define SSH_SMSG_PUBLIC_KEY 2 /* ck,msk,srvk,hostk */
1.3 provos 206: #define SSH_CMSG_SESSION_KEY 3 /* key (BIGNUM) */
1.1 deraadt 207: #define SSH_CMSG_USER 4 /* user (string) */
208: #define SSH_CMSG_AUTH_RHOSTS 5 /* user (string) */
1.3 provos 209: #define SSH_CMSG_AUTH_RSA 6 /* modulus (BIGNUM) */
210: #define SSH_SMSG_AUTH_RSA_CHALLENGE 7 /* int (BIGNUM) */
211: #define SSH_CMSG_AUTH_RSA_RESPONSE 8 /* int (BIGNUM) */
1.1 deraadt 212: #define SSH_CMSG_AUTH_PASSWORD 9 /* pass (string) */
213: #define SSH_CMSG_REQUEST_PTY 10 /* TERM, tty modes */
214: #define SSH_CMSG_WINDOW_SIZE 11 /* row,col,xpix,ypix */
215: #define SSH_CMSG_EXEC_SHELL 12 /* */
216: #define SSH_CMSG_EXEC_CMD 13 /* cmd (string) */
217: #define SSH_SMSG_SUCCESS 14 /* */
218: #define SSH_SMSG_FAILURE 15 /* */
219: #define SSH_CMSG_STDIN_DATA 16 /* data (string) */
220: #define SSH_SMSG_STDOUT_DATA 17 /* data (string) */
221: #define SSH_SMSG_STDERR_DATA 18 /* data (string) */
222: #define SSH_CMSG_EOF 19 /* */
223: #define SSH_SMSG_EXITSTATUS 20 /* status (int) */
224: #define SSH_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* channel (int) */
225: #define SSH_MSG_CHANNEL_OPEN_FAILURE 22 /* channel (int) */
226: #define SSH_MSG_CHANNEL_DATA 23 /* ch,data (int,str) */
227: #define SSH_MSG_CHANNEL_CLOSE 24 /* channel (int) */
228: #define SSH_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* channel (int) */
229: /* SSH_CMSG_X11_REQUEST_FORWARDING 26 OBSOLETE */
230: #define SSH_SMSG_X11_OPEN 27 /* channel (int) */
231: #define SSH_CMSG_PORT_FORWARD_REQUEST 28 /* p,host,hp (i,s,i) */
232: #define SSH_MSG_PORT_OPEN 29 /* ch,h,p (i,s,i) */
233: #define SSH_CMSG_AGENT_REQUEST_FORWARDING 30 /* */
234: #define SSH_SMSG_AGENT_OPEN 31 /* port (int) */
235: #define SSH_MSG_IGNORE 32 /* string */
236: #define SSH_CMSG_EXIT_CONFIRMATION 33 /* */
237: #define SSH_CMSG_X11_REQUEST_FORWARDING 34 /* proto,data (s,s) */
238: #define SSH_CMSG_AUTH_RHOSTS_RSA 35 /* user,mod (s,mpi) */
239: #define SSH_MSG_DEBUG 36 /* string */
240: #define SSH_CMSG_REQUEST_COMPRESSION 37 /* level 1-9 (int) */
1.13 markus 241: #define SSH_CMSG_MAX_PACKET_SIZE 38 /* size 4k-1024k (int) */
1.24 markus 242: #define SSH_CMSG_AUTH_TIS 39 /* we use this for s/key */
243: #define SSH_SMSG_AUTH_TIS_CHALLENGE 40 /* challenge (string) */
244: #define SSH_CMSG_AUTH_TIS_RESPONSE 41 /* response (string) */
1.1 deraadt 245: #define SSH_CMSG_AUTH_KERBEROS 42 /* (KTEXT) */
246: #define SSH_SMSG_AUTH_KERBEROS_RESPONSE 43 /* (KTEXT) */
247: #define SSH_CMSG_HAVE_KERBEROS_TGT 44 /* credentials (s) */
248: #define SSH_CMSG_HAVE_AFS_TOKEN 65 /* token (s) */
249:
250: /*------------ definitions for login.c -------------*/
251:
1.26 markus 252: /*
253: * Returns the time when the user last logged in. Returns 0 if the
254: * information is not available. This must be called before record_login.
255: * The host from which the user logged in is stored in buf.
256: */
1.38 ! markus 257: unsigned long
1.25 deraadt 258: get_last_login_time(uid_t uid, const char *logname,
259: char *buf, unsigned int bufsize);
1.1 deraadt 260:
1.26 markus 261: /*
262: * Records that the user has logged in. This does many things normally done
263: * by login(1).
264: */
1.38 ! markus 265: void
1.25 deraadt 266: record_login(int pid, const char *ttyname, const char *user, uid_t uid,
1.32 markus 267: const char *host, struct sockaddr *addr);
1.1 deraadt 268:
1.26 markus 269: /*
270: * Records that the user has logged out. This does many thigs normally done
271: * by login(1) or init.
272: */
1.25 deraadt 273: void record_logout(int pid, const char *ttyname);
1.1 deraadt 274:
275: /*------------ definitions for sshconnect.c ----------*/
276:
1.26 markus 277: /*
278: * Opens a TCP/IP connection to the remote server on the given host. If port
279: * is 0, the default port will be used. If anonymous is zero, a privileged
280: * port will be allocated to make the connection. This requires super-user
281: * privileges if anonymous is false. Connection_attempts specifies the
282: * maximum number of tries, one per second. This returns true on success,
283: * and zero on failure. If the connection is successful, this calls
284: * packet_set_connection for the connection.
285: */
1.38 ! markus 286: int
1.32 markus 287: ssh_connect(const char *host, struct sockaddr_storage * hostaddr,
1.27 markus 288: u_short port, int connection_attempts,
1.25 deraadt 289: int anonymous, uid_t original_real_uid,
290: const char *proxy_command);
1.1 deraadt 291:
1.26 markus 292: /*
293: * Starts a dialog with the server, and authenticates the current user on the
294: * server. This does not need any extra privileges. The basic connection to
295: * the server must already have been established before this is called. If
296: * login fails, this function prints an error and never returns. This
297: * initializes the random state, and leaves it initialized (it will also have
298: * references from the packet module).
299: */
1.18 markus 300:
1.38 ! markus 301: void
1.25 deraadt 302: ssh_login(int host_key_valid, RSA * host_key, const char *host,
1.32 markus 303: struct sockaddr * hostaddr, uid_t original_real_uid);
1.1 deraadt 304:
305: /*------------ Definitions for various authentication methods. -------*/
306:
1.26 markus 307: /*
308: * Tries to authenticate the user using the .rhosts file. Returns true if
309: * authentication succeeds. If ignore_rhosts is non-zero, this will not
310: * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
311: */
1.25 deraadt 312: int auth_rhosts(struct passwd * pw, const char *client_user);
1.1 deraadt 313:
1.26 markus 314: /*
315: * Tries to authenticate the user using the .rhosts file and the host using
316: * its host key. Returns true if authentication succeeds.
317: */
1.38 ! markus 318: int
1.34 markus 319: auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
1.1 deraadt 320:
1.26 markus 321: /*
322: * Tries to authenticate the user using password. Returns true if
323: * authentication succeeds.
324: */
1.25 deraadt 325: int auth_password(struct passwd * pw, const char *password);
1.1 deraadt 326:
1.26 markus 327: /*
328: * Performs the RSA authentication dialog with the client. This returns 0 if
329: * the client could not be authenticated, and 1 if authentication was
330: * successful. This may exit if there is a serious protocol violation.
331: */
1.25 deraadt 332: int auth_rsa(struct passwd * pw, BIGNUM * client_n);
1.1 deraadt 333:
1.26 markus 334: /*
335: * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
336: * over the key. Skips any whitespace at the beginning and at end.
337: */
1.25 deraadt 338: int auth_rsa_read_key(char **cpp, unsigned int *bitsp, BIGNUM * e, BIGNUM * n);
1.1 deraadt 339:
1.26 markus 340: /*
341: * Returns the name of the machine at the other end of the socket. The
342: * returned string should be freed by the caller.
343: */
1.25 deraadt 344: char *get_remote_hostname(int socket);
1.1 deraadt 345:
1.26 markus 346: /*
347: * Return the canonical name of the host in the other side of the current
348: * connection (as returned by packet_get_connection). The host name is
349: * cached, so it is efficient to call this several times.
350: */
1.1 deraadt 351: const char *get_canonical_hostname(void);
352:
1.26 markus 353: /*
354: * Returns the remote IP address as an ascii string. The value need not be
355: * freed by the caller.
356: */
1.1 deraadt 357: const char *get_remote_ipaddr(void);
358:
359: /* Returns the port number of the peer of the socket. */
1.25 deraadt 360: int get_peer_port(int sock);
1.1 deraadt 361:
1.32 markus 362: /* Returns the port number of the remote/local host. */
1.25 deraadt 363: int get_remote_port(void);
1.32 markus 364: int get_local_port(void);
365:
1.1 deraadt 366:
1.26 markus 367: /*
368: * Performs the RSA authentication challenge-response dialog with the client,
369: * and returns true (non-zero) if the client gave the correct answer to our
370: * challenge; returns zero if the client gives a wrong answer.
371: */
1.34 markus 372: int auth_rsa_challenge_dialog(RSA *pk);
1.1 deraadt 373:
1.26 markus 374: /*
375: * Reads a passphrase from /dev/tty with echo turned off. Returns the
376: * passphrase (allocated with xmalloc). Exits if EOF is encountered. If
377: * from_stdin is true, the passphrase will be read from stdin instead.
378: */
1.25 deraadt 379: char *read_passphrase(const char *prompt, int from_stdin);
1.1 deraadt 380:
1.26 markus 381: /*
382: * Saves the authentication (private) key in a file, encrypting it with
383: * passphrase. The identification of the file (lowest 64 bits of n) will
384: * precede the key to provide identification of the key without needing a
385: * passphrase.
386: */
1.38 ! markus 387: int
1.25 deraadt 388: save_private_key(const char *filename, const char *passphrase,
389: RSA * private_key, const char *comment);
1.1 deraadt 390:
1.26 markus 391: /*
392: * Loads the public part of the key file (public key and comment). Returns 0
393: * if an error occurred; zero if the public key was successfully read. The
394: * comment of the key is returned in comment_return if it is non-NULL; the
395: * caller must free the value with xfree.
396: */
1.38 ! markus 397: int
1.25 deraadt 398: load_public_key(const char *filename, RSA * pub,
399: char **comment_return);
1.1 deraadt 400:
1.26 markus 401: /*
402: * Loads the private key from the file. Returns 0 if an error is encountered
403: * (file does not exist or is not readable, or passphrase is bad). This
404: * initializes the private key. The comment of the key is returned in
405: * comment_return if it is non-NULL; the caller must free the value with
406: * xfree.
407: */
1.38 ! markus 408: int
1.25 deraadt 409: load_private_key(const char *filename, const char *passphrase,
410: RSA * private_key, char **comment_return);
1.20 markus 411:
412: /*------------ Definitions for logging. -----------------------*/
413:
414: /* Supported syslog facilities and levels. */
1.25 deraadt 415: typedef enum {
416: SYSLOG_FACILITY_DAEMON,
417: SYSLOG_FACILITY_USER,
418: SYSLOG_FACILITY_AUTH,
419: SYSLOG_FACILITY_LOCAL0,
420: SYSLOG_FACILITY_LOCAL1,
421: SYSLOG_FACILITY_LOCAL2,
422: SYSLOG_FACILITY_LOCAL3,
423: SYSLOG_FACILITY_LOCAL4,
424: SYSLOG_FACILITY_LOCAL5,
425: SYSLOG_FACILITY_LOCAL6,
426: SYSLOG_FACILITY_LOCAL7
427: } SyslogFacility;
428:
429: typedef enum {
430: SYSLOG_LEVEL_QUIET,
431: SYSLOG_LEVEL_FATAL,
432: SYSLOG_LEVEL_ERROR,
433: SYSLOG_LEVEL_INFO,
434: SYSLOG_LEVEL_VERBOSE,
435: SYSLOG_LEVEL_DEBUG
436: } LogLevel;
1.20 markus 437: /* Initializes logging. */
1.25 deraadt 438: void log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr);
1.20 markus 439:
440: /* Logging implementation, depending on server or client */
1.25 deraadt 441: void do_log(LogLevel level, const char *fmt, va_list args);
1.22 markus 442:
443: /* name to facility/level */
444: SyslogFacility log_facility_number(char *name);
445: LogLevel log_level_number(char *name);
1.20 markus 446:
447: /* Output a message to syslog or stderr */
1.25 deraadt 448: void fatal(const char *fmt,...) __attribute__((format(printf, 1, 2)));
449: void error(const char *fmt,...) __attribute__((format(printf, 1, 2)));
450: void log(const char *fmt,...) __attribute__((format(printf, 1, 2)));
451: void verbose(const char *fmt,...) __attribute__((format(printf, 1, 2)));
452: void debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
453:
1.20 markus 454: /* same as fatal() but w/o logging */
1.25 deraadt 455: void fatal_cleanup(void);
1.20 markus 456:
1.26 markus 457: /*
458: * Registers a cleanup function to be called by fatal()/fatal_cleanup()
459: * before exiting. It is permissible to call fatal_remove_cleanup for the
460: * function itself from the function.
461: */
1.25 deraadt 462: void fatal_add_cleanup(void (*proc) (void *context), void *context);
1.20 markus 463:
464: /* Removes a cleanup function to be called at fatal(). */
1.25 deraadt 465: void fatal_remove_cleanup(void (*proc) (void *context), void *context);
1.1 deraadt 466:
1.36 markus 467: /* ---- misc */
468:
1.26 markus 469: /*
470: * Expands tildes in the file name. Returns data allocated by xmalloc.
471: * Warning: this calls getpw*.
472: */
1.25 deraadt 473: char *tilde_expand_filename(const char *filename, uid_t my_uid);
1.1 deraadt 474:
1.26 markus 475: /*
476: * Performs the interactive session. This handles data transmission between
477: * the client and the program. Note that the notion of stdin, stdout, and
478: * stderr in this function is sort of reversed: this function writes to stdin
479: * (of the child program), and reads from stdout and stderr (of the child
480: * program).
481: */
1.25 deraadt 482: void server_loop(int pid, int fdin, int fdout, int fderr);
1.36 markus 483: void server_loop2(void);
1.1 deraadt 484:
485: /* Client side main loop for the interactive session. */
1.25 deraadt 486: int client_loop(int have_pty, int escape_char);
1.1 deraadt 487:
488: /* Linked list of custom environment strings (see auth-rsa.c). */
489: struct envstring {
1.25 deraadt 490: struct envstring *next;
491: char *s;
1.1 deraadt 492: };
1.30 deraadt 493:
494: /*
495: * Ensure all of data on socket comes through. f==read || f==write
496: */
1.33 d 497: ssize_t atomicio(ssize_t (*f)(), int fd, void *s, size_t n);
1.30 deraadt 498:
1.1 deraadt 499: #ifdef KRB4
500: #include <krb.h>
1.26 markus 501: /*
502: * Performs Kerberos v4 mutual authentication with the client. This returns 0
503: * if the client could not be authenticated, and 1 if authentication was
504: * successful. This may exit if there is a serious protocol violation.
505: */
1.25 deraadt 506: int auth_krb4(const char *server_user, KTEXT auth, char **client);
507: int krb4_init(uid_t uid);
508: void krb4_cleanup_proc(void *ignore);
1.28 markus 509: int auth_krb4_password(struct passwd * pw, const char *password);
1.4 dugsong 510:
511: #ifdef AFS
512: #include <kafs.h>
513:
514: /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
1.25 deraadt 515: int auth_kerberos_tgt(struct passwd * pw, const char *string);
516: int auth_afs_token(struct passwd * pw, const char *token_string);
1.1 deraadt 517:
1.25 deraadt 518: int creds_to_radix(CREDENTIALS * creds, unsigned char *buf);
519: int radix_to_creds(const char *buf, CREDENTIALS * creds);
520: #endif /* AFS */
1.1 deraadt 521:
1.25 deraadt 522: #endif /* KRB4 */
1.9 markus 523:
524: #ifdef SKEY
525: #include <skey.h>
1.25 deraadt 526: char *skey_fake_keyinfo(char *username);
1.28 markus 527: int auth_skey_password(struct passwd * pw, const char *password);
1.25 deraadt 528: #endif /* SKEY */
1.32 markus 529:
530: /* AF_UNSPEC or AF_INET or AF_INET6 */
531: extern int IPv4or6;
1.1 deraadt 532:
1.25 deraadt 533: #endif /* SSH_H */
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