Annotation of src/usr.bin/ssh/ssh.h, Revision 1.51
1.1 deraadt 1: /*
1.25 deraadt 2: * Author: Tatu Ylonen <ylo@cs.hut.fi>
3: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4: * All rights reserved
1.38 markus 5: *
1.25 deraadt 6: * Generic header file for ssh.
1.38 markus 7: *
1.50 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.25 deraadt 13: */
1.1 deraadt 14:
1.51 ! markus 15: /* RCSID("$OpenBSD: ssh.h,v 1.50 2000/09/07 20:27:54 deraadt Exp $"); */
1.1 deraadt 16:
17: #ifndef SSH_H
18: #define SSH_H
19:
20: #include "rsa.h"
21: #include "cipher.h"
22:
1.26 markus 23: /*
1.45 markus 24: * XXX
1.26 markus 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"
1.40 markus 74: #define SSH_SYSTEM_HOSTFILE2 ETCDIR "/ssh_known_hosts2"
1.1 deraadt 75:
1.26 markus 76: /*
77: * Of these, ssh_host_key must be readable only by root, whereas ssh_config
78: * should be world-readable.
79: */
80: #define HOST_KEY_FILE ETCDIR "/ssh_host_key"
81: #define SERVER_CONFIG_FILE ETCDIR "/sshd_config"
82: #define HOST_CONFIG_FILE ETCDIR "/ssh_config"
1.43 markus 83: #define HOST_DSA_KEY_FILE ETCDIR "/ssh_host_dsa_key"
1.2 deraadt 84:
85: #define SSH_PROGRAM "/usr/bin/ssh"
1.1 deraadt 86:
1.26 markus 87: /*
88: * The process id of the daemon listening for connections is saved here to
89: * make it easier to kill the correct daemon when necessary.
90: */
1.1 deraadt 91: #define SSH_DAEMON_PID_FILE PIDDIR "/sshd.pid"
92:
1.26 markus 93: /*
94: * The directory in user\'s home directory in which the files reside. The
95: * directory should be world-readable (though not all files are).
96: */
1.1 deraadt 97: #define SSH_USER_DIR ".ssh"
98:
1.26 markus 99: /*
100: * Per-user file containing host keys of known hosts. This file need not be
101: * readable by anyone except the user him/herself, though this does not
102: * contain anything particularly secret.
103: */
1.1 deraadt 104: #define SSH_USER_HOSTFILE "~/.ssh/known_hosts"
1.40 markus 105: #define SSH_USER_HOSTFILE2 "~/.ssh/known_hosts2"
1.1 deraadt 106:
1.26 markus 107: /*
108: * Name of the default file containing client-side authentication key. This
109: * file should only be readable by the user him/herself.
110: */
1.1 deraadt 111: #define SSH_CLIENT_IDENTITY ".ssh/identity"
1.42 markus 112: #define SSH_CLIENT_ID_DSA ".ssh/id_dsa"
1.1 deraadt 113:
1.26 markus 114: /*
115: * Configuration file in user\'s home directory. This file need not be
116: * readable by anyone but the user him/herself, but does not contain anything
117: * particularly secret. If the user\'s home directory resides on an NFS
118: * volume where root is mapped to nobody, this may need to be world-readable.
119: */
1.1 deraadt 120: #define SSH_USER_CONFFILE ".ssh/config"
121:
1.26 markus 122: /*
123: * File containing a list of those rsa keys that permit logging in as this
124: * user. This file need not be readable by anyone but the user him/herself,
125: * but does not contain anything particularly secret. If the user\'s home
126: * directory resides on an NFS volume where root is mapped to nobody, this
127: * may need to be world-readable. (This file is read by the daemon which is
128: * running as root.)
129: */
1.1 deraadt 130: #define SSH_USER_PERMITTED_KEYS ".ssh/authorized_keys"
1.40 markus 131: #define SSH_USER_PERMITTED_KEYS2 ".ssh/authorized_keys2"
1.1 deraadt 132:
1.26 markus 133: /*
134: * Per-user and system-wide ssh "rc" files. These files are executed with
135: * /bin/sh before starting the shell or command if they exist. They will be
136: * passed "proto cookie" as arguments if X11 forwarding with spoofing is in
137: * use. xauth will be run if neither of these exists.
138: */
1.1 deraadt 139: #define SSH_USER_RC ".ssh/rc"
140: #define SSH_SYSTEM_RC ETCDIR "/sshrc"
141:
1.26 markus 142: /*
143: * Ssh-only version of /etc/hosts.equiv. Additionally, the daemon may use
144: * ~/.rhosts and /etc/hosts.equiv if rhosts authentication is enabled.
145: */
1.1 deraadt 146: #define SSH_HOSTS_EQUIV ETCDIR "/shosts.equiv"
147:
1.26 markus 148: /*
149: * Name of the environment variable containing the pathname of the
150: * authentication socket.
151: */
1.13 markus 152: #define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
1.15 markus 153:
1.26 markus 154: /*
155: * Name of the environment variable containing the pathname of the
156: * authentication socket.
157: */
1.15 markus 158: #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID"
1.29 markus 159:
160: /*
161: * Default path to ssh-askpass used by ssh-add,
162: * environment variable for overwriting the default location
163: */
164: #define SSH_ASKPASS_DEFAULT "/usr/X11R6/bin/ssh-askpass"
165: #define SSH_ASKPASS_ENV "SSH_ASKPASS"
1.1 deraadt 166:
1.26 markus 167: /*
168: * Force host key length and server key length to differ by at least this
169: * many bits. This is to make double encryption with rsaref work.
170: */
1.1 deraadt 171: #define SSH_KEY_BITS_RESERVED 128
172:
1.26 markus 173: /*
174: * Length of the session key in bytes. (Specified as 256 bits in the
175: * protocol.)
176: */
1.1 deraadt 177: #define SSH_SESSION_KEY_LENGTH 32
178:
179: /* Name of Kerberos service for SSH to use. */
180: #define KRB4_SERVICE_NAME "rcmd"
181:
1.26 markus 182: /*
183: * Authentication methods. New types can be added, but old types should not
184: * be removed for compatibility. The maximum allowed value is 31.
185: */
1.1 deraadt 186: #define SSH_AUTH_RHOSTS 1
187: #define SSH_AUTH_RSA 2
188: #define SSH_AUTH_PASSWORD 3
189: #define SSH_AUTH_RHOSTS_RSA 4
1.24 markus 190: #define SSH_AUTH_TIS 5
1.1 deraadt 191: #define SSH_AUTH_KERBEROS 6
192: #define SSH_PASS_KERBEROS_TGT 7
1.26 markus 193: /* 8 to 15 are reserved */
1.1 deraadt 194: #define SSH_PASS_AFS_TOKEN 21
195:
196: /* Protocol flags. These are bit masks. */
1.26 markus 197: #define SSH_PROTOFLAG_SCREEN_NUMBER 1 /* X11 forwarding includes screen */
198: #define SSH_PROTOFLAG_HOST_IN_FWD_OPEN 2 /* forwarding opens contain host */
199:
200: /*
201: * Definition of message types. New values can be added, but old values
202: * should not be removed or without careful consideration of the consequences
203: * for compatibility. The maximum value is 254; value 255 is reserved for
204: * future extension.
205: */
206: /* Message name */ /* msg code */ /* arguments */
1.1 deraadt 207: #define SSH_MSG_NONE 0 /* no message */
208: #define SSH_MSG_DISCONNECT 1 /* cause (string) */
209: #define SSH_SMSG_PUBLIC_KEY 2 /* ck,msk,srvk,hostk */
1.3 provos 210: #define SSH_CMSG_SESSION_KEY 3 /* key (BIGNUM) */
1.1 deraadt 211: #define SSH_CMSG_USER 4 /* user (string) */
212: #define SSH_CMSG_AUTH_RHOSTS 5 /* user (string) */
1.3 provos 213: #define SSH_CMSG_AUTH_RSA 6 /* modulus (BIGNUM) */
214: #define SSH_SMSG_AUTH_RSA_CHALLENGE 7 /* int (BIGNUM) */
215: #define SSH_CMSG_AUTH_RSA_RESPONSE 8 /* int (BIGNUM) */
1.1 deraadt 216: #define SSH_CMSG_AUTH_PASSWORD 9 /* pass (string) */
217: #define SSH_CMSG_REQUEST_PTY 10 /* TERM, tty modes */
218: #define SSH_CMSG_WINDOW_SIZE 11 /* row,col,xpix,ypix */
219: #define SSH_CMSG_EXEC_SHELL 12 /* */
220: #define SSH_CMSG_EXEC_CMD 13 /* cmd (string) */
221: #define SSH_SMSG_SUCCESS 14 /* */
222: #define SSH_SMSG_FAILURE 15 /* */
223: #define SSH_CMSG_STDIN_DATA 16 /* data (string) */
224: #define SSH_SMSG_STDOUT_DATA 17 /* data (string) */
225: #define SSH_SMSG_STDERR_DATA 18 /* data (string) */
226: #define SSH_CMSG_EOF 19 /* */
227: #define SSH_SMSG_EXITSTATUS 20 /* status (int) */
228: #define SSH_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* channel (int) */
229: #define SSH_MSG_CHANNEL_OPEN_FAILURE 22 /* channel (int) */
230: #define SSH_MSG_CHANNEL_DATA 23 /* ch,data (int,str) */
231: #define SSH_MSG_CHANNEL_CLOSE 24 /* channel (int) */
232: #define SSH_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* channel (int) */
233: /* SSH_CMSG_X11_REQUEST_FORWARDING 26 OBSOLETE */
234: #define SSH_SMSG_X11_OPEN 27 /* channel (int) */
235: #define SSH_CMSG_PORT_FORWARD_REQUEST 28 /* p,host,hp (i,s,i) */
236: #define SSH_MSG_PORT_OPEN 29 /* ch,h,p (i,s,i) */
237: #define SSH_CMSG_AGENT_REQUEST_FORWARDING 30 /* */
238: #define SSH_SMSG_AGENT_OPEN 31 /* port (int) */
239: #define SSH_MSG_IGNORE 32 /* string */
240: #define SSH_CMSG_EXIT_CONFIRMATION 33 /* */
241: #define SSH_CMSG_X11_REQUEST_FORWARDING 34 /* proto,data (s,s) */
242: #define SSH_CMSG_AUTH_RHOSTS_RSA 35 /* user,mod (s,mpi) */
243: #define SSH_MSG_DEBUG 36 /* string */
244: #define SSH_CMSG_REQUEST_COMPRESSION 37 /* level 1-9 (int) */
1.13 markus 245: #define SSH_CMSG_MAX_PACKET_SIZE 38 /* size 4k-1024k (int) */
1.24 markus 246: #define SSH_CMSG_AUTH_TIS 39 /* we use this for s/key */
247: #define SSH_SMSG_AUTH_TIS_CHALLENGE 40 /* challenge (string) */
248: #define SSH_CMSG_AUTH_TIS_RESPONSE 41 /* response (string) */
1.1 deraadt 249: #define SSH_CMSG_AUTH_KERBEROS 42 /* (KTEXT) */
250: #define SSH_SMSG_AUTH_KERBEROS_RESPONSE 43 /* (KTEXT) */
251: #define SSH_CMSG_HAVE_KERBEROS_TGT 44 /* credentials (s) */
252: #define SSH_CMSG_HAVE_AFS_TOKEN 65 /* token (s) */
253:
254: /*------------ definitions for login.c -------------*/
255:
1.26 markus 256: /*
257: * Returns the time when the user last logged in. Returns 0 if the
258: * information is not available. This must be called before record_login.
259: * The host from which the user logged in is stored in buf.
260: */
1.38 markus 261: unsigned long
1.25 deraadt 262: get_last_login_time(uid_t uid, const char *logname,
263: char *buf, unsigned int bufsize);
1.1 deraadt 264:
1.26 markus 265: /*
266: * Records that the user has logged in. This does many things normally done
267: * by login(1).
268: */
1.38 markus 269: void
1.39 deraadt 270: record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
1.32 markus 271: const char *host, struct sockaddr *addr);
1.1 deraadt 272:
1.26 markus 273: /*
274: * Records that the user has logged out. This does many thigs normally done
275: * by login(1) or init.
276: */
1.39 deraadt 277: void record_logout(pid_t pid, const char *ttyname);
1.1 deraadt 278:
279: /*------------ definitions for sshconnect.c ----------*/
280:
1.26 markus 281: /*
282: * Opens a TCP/IP connection to the remote server on the given host. If port
283: * is 0, the default port will be used. If anonymous is zero, a privileged
284: * port will be allocated to make the connection. This requires super-user
285: * privileges if anonymous is false. Connection_attempts specifies the
286: * maximum number of tries, one per second. This returns true on success,
287: * and zero on failure. If the connection is successful, this calls
288: * packet_set_connection for the connection.
289: */
1.38 markus 290: int
1.32 markus 291: ssh_connect(const char *host, struct sockaddr_storage * hostaddr,
1.27 markus 292: u_short port, int connection_attempts,
1.25 deraadt 293: int anonymous, uid_t original_real_uid,
294: const char *proxy_command);
1.1 deraadt 295:
1.26 markus 296: /*
297: * Starts a dialog with the server, and authenticates the current user on the
298: * server. This does not need any extra privileges. The basic connection to
299: * the server must already have been established before this is called. If
300: * login fails, this function prints an error and never returns. This
301: * initializes the random state, and leaves it initialized (it will also have
302: * references from the packet module).
303: */
1.18 markus 304:
1.38 markus 305: void
1.25 deraadt 306: ssh_login(int host_key_valid, RSA * host_key, const char *host,
1.32 markus 307: struct sockaddr * hostaddr, uid_t original_real_uid);
1.1 deraadt 308:
309: /*------------ Definitions for various authentication methods. -------*/
310:
1.26 markus 311: /*
312: * Tries to authenticate the user using the .rhosts file. Returns true if
313: * authentication succeeds. If ignore_rhosts is non-zero, this will not
314: * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
315: */
1.25 deraadt 316: int auth_rhosts(struct passwd * pw, const char *client_user);
1.1 deraadt 317:
1.26 markus 318: /*
319: * Tries to authenticate the user using the .rhosts file and the host using
320: * its host key. Returns true if authentication succeeds.
321: */
1.38 markus 322: int
1.34 markus 323: auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
1.1 deraadt 324:
1.26 markus 325: /*
326: * Tries to authenticate the user using password. Returns true if
327: * authentication succeeds.
328: */
1.25 deraadt 329: int auth_password(struct passwd * pw, const char *password);
1.1 deraadt 330:
1.26 markus 331: /*
332: * Performs the RSA authentication dialog with the client. This returns 0 if
333: * the client could not be authenticated, and 1 if authentication was
334: * successful. This may exit if there is a serious protocol violation.
335: */
1.25 deraadt 336: int auth_rsa(struct passwd * pw, BIGNUM * client_n);
1.1 deraadt 337:
1.26 markus 338: /*
339: * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
340: * over the key. Skips any whitespace at the beginning and at end.
341: */
1.25 deraadt 342: int auth_rsa_read_key(char **cpp, unsigned int *bitsp, BIGNUM * e, BIGNUM * n);
1.1 deraadt 343:
1.26 markus 344: /*
345: * Returns the name of the machine at the other end of the socket. The
346: * returned string should be freed by the caller.
347: */
1.25 deraadt 348: char *get_remote_hostname(int socket);
1.1 deraadt 349:
1.26 markus 350: /*
351: * Return the canonical name of the host in the other side of the current
352: * connection (as returned by packet_get_connection). The host name is
353: * cached, so it is efficient to call this several times.
354: */
1.1 deraadt 355: const char *get_canonical_hostname(void);
356:
1.26 markus 357: /*
358: * Returns the remote IP address as an ascii string. The value need not be
359: * freed by the caller.
360: */
1.1 deraadt 361: const char *get_remote_ipaddr(void);
362:
363: /* Returns the port number of the peer of the socket. */
1.25 deraadt 364: int get_peer_port(int sock);
1.1 deraadt 365:
1.32 markus 366: /* Returns the port number of the remote/local host. */
1.25 deraadt 367: int get_remote_port(void);
1.32 markus 368: int get_local_port(void);
369:
1.1 deraadt 370:
1.26 markus 371: /*
372: * Performs the RSA authentication challenge-response dialog with the client,
373: * and returns true (non-zero) if the client gave the correct answer to our
374: * challenge; returns zero if the client gives a wrong answer.
375: */
1.34 markus 376: int auth_rsa_challenge_dialog(RSA *pk);
1.1 deraadt 377:
1.26 markus 378: /*
379: * Reads a passphrase from /dev/tty with echo turned off. Returns the
380: * passphrase (allocated with xmalloc). Exits if EOF is encountered. If
381: * from_stdin is true, the passphrase will be read from stdin instead.
382: */
1.25 deraadt 383: char *read_passphrase(const char *prompt, int from_stdin);
1.1 deraadt 384:
1.20 markus 385:
386: /*------------ Definitions for logging. -----------------------*/
387:
388: /* Supported syslog facilities and levels. */
1.25 deraadt 389: typedef enum {
390: SYSLOG_FACILITY_DAEMON,
391: SYSLOG_FACILITY_USER,
392: SYSLOG_FACILITY_AUTH,
393: SYSLOG_FACILITY_LOCAL0,
394: SYSLOG_FACILITY_LOCAL1,
395: SYSLOG_FACILITY_LOCAL2,
396: SYSLOG_FACILITY_LOCAL3,
397: SYSLOG_FACILITY_LOCAL4,
398: SYSLOG_FACILITY_LOCAL5,
399: SYSLOG_FACILITY_LOCAL6,
400: SYSLOG_FACILITY_LOCAL7
401: } SyslogFacility;
402:
403: typedef enum {
404: SYSLOG_LEVEL_QUIET,
405: SYSLOG_LEVEL_FATAL,
406: SYSLOG_LEVEL_ERROR,
407: SYSLOG_LEVEL_INFO,
408: SYSLOG_LEVEL_VERBOSE,
1.51 ! markus 409: SYSLOG_LEVEL_DEBUG1,
! 410: SYSLOG_LEVEL_DEBUG2,
! 411: SYSLOG_LEVEL_DEBUG3
1.25 deraadt 412: } LogLevel;
1.20 markus 413: /* Initializes logging. */
1.25 deraadt 414: void log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr);
1.20 markus 415:
416: /* Logging implementation, depending on server or client */
1.25 deraadt 417: void do_log(LogLevel level, const char *fmt, va_list args);
1.22 markus 418:
419: /* name to facility/level */
420: SyslogFacility log_facility_number(char *name);
421: LogLevel log_level_number(char *name);
1.20 markus 422:
423: /* Output a message to syslog or stderr */
1.25 deraadt 424: void fatal(const char *fmt,...) __attribute__((format(printf, 1, 2)));
425: void error(const char *fmt,...) __attribute__((format(printf, 1, 2)));
426: void log(const char *fmt,...) __attribute__((format(printf, 1, 2)));
427: void verbose(const char *fmt,...) __attribute__((format(printf, 1, 2)));
428: void debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
1.51 ! markus 429: void debug2(const char *fmt,...) __attribute__((format(printf, 1, 2)));
! 430: void debug3(const char *fmt,...) __attribute__((format(printf, 1, 2)));
1.25 deraadt 431:
1.20 markus 432: /* same as fatal() but w/o logging */
1.25 deraadt 433: void fatal_cleanup(void);
1.20 markus 434:
1.26 markus 435: /*
436: * Registers a cleanup function to be called by fatal()/fatal_cleanup()
437: * before exiting. It is permissible to call fatal_remove_cleanup for the
438: * function itself from the function.
439: */
1.25 deraadt 440: void fatal_add_cleanup(void (*proc) (void *context), void *context);
1.20 markus 441:
442: /* Removes a cleanup function to be called at fatal(). */
1.25 deraadt 443: void fatal_remove_cleanup(void (*proc) (void *context), void *context);
1.1 deraadt 444:
1.36 markus 445: /* ---- misc */
446:
1.26 markus 447: /*
448: * Expands tildes in the file name. Returns data allocated by xmalloc.
449: * Warning: this calls getpw*.
450: */
1.25 deraadt 451: char *tilde_expand_filename(const char *filename, uid_t my_uid);
1.46 markus 452:
453: /* remove newline at end of string */
454: char *chop(char *s);
1.48 provos 455:
456: /* return next token in configuration line */
457: char *strdelim(char **s);
1.46 markus 458:
459: /* set filedescriptor to non-blocking */
460: void set_nonblock(int fd);
1.1 deraadt 461:
1.26 markus 462: /*
463: * Performs the interactive session. This handles data transmission between
464: * the client and the program. Note that the notion of stdin, stdout, and
465: * stderr in this function is sort of reversed: this function writes to stdin
466: * (of the child program), and reads from stdout and stderr (of the child
467: * program).
468: */
1.39 deraadt 469: void server_loop(pid_t pid, int fdin, int fdout, int fderr);
1.36 markus 470: void server_loop2(void);
1.1 deraadt 471:
472: /* Client side main loop for the interactive session. */
1.49 markus 473: int client_loop(int have_pty, int escape_char, int id);
1.1 deraadt 474:
475: /* Linked list of custom environment strings (see auth-rsa.c). */
476: struct envstring {
1.25 deraadt 477: struct envstring *next;
478: char *s;
1.1 deraadt 479: };
1.30 deraadt 480:
481: /*
482: * Ensure all of data on socket comes through. f==read || f==write
483: */
1.33 d 484: ssize_t atomicio(ssize_t (*f)(), int fd, void *s, size_t n);
1.30 deraadt 485:
1.1 deraadt 486: #ifdef KRB4
487: #include <krb.h>
1.26 markus 488: /*
489: * Performs Kerberos v4 mutual authentication with the client. This returns 0
490: * if the client could not be authenticated, and 1 if authentication was
491: * successful. This may exit if there is a serious protocol violation.
492: */
1.25 deraadt 493: int auth_krb4(const char *server_user, KTEXT auth, char **client);
494: int krb4_init(uid_t uid);
495: void krb4_cleanup_proc(void *ignore);
1.28 markus 496: int auth_krb4_password(struct passwd * pw, const char *password);
1.4 dugsong 497:
498: #ifdef AFS
499: #include <kafs.h>
500:
501: /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
1.25 deraadt 502: int auth_kerberos_tgt(struct passwd * pw, const char *string);
503: int auth_afs_token(struct passwd * pw, const char *token_string);
1.1 deraadt 504:
1.44 markus 505: int creds_to_radix(CREDENTIALS * creds, unsigned char *buf, size_t buflen);
1.25 deraadt 506: int radix_to_creds(const char *buf, CREDENTIALS * creds);
507: #endif /* AFS */
1.1 deraadt 508:
1.25 deraadt 509: #endif /* KRB4 */
1.9 markus 510:
511: #ifdef SKEY
512: #include <skey.h>
1.25 deraadt 513: char *skey_fake_keyinfo(char *username);
1.28 markus 514: int auth_skey_password(struct passwd * pw, const char *password);
1.25 deraadt 515: #endif /* SKEY */
1.32 markus 516:
517: /* AF_UNSPEC or AF_INET or AF_INET6 */
518: extern int IPv4or6;
1.1 deraadt 519:
1.25 deraadt 520: #endif /* SSH_H */
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