Annotation of src/usr.bin/ssh/auth.h, Revision 1.3.2.3
1.3.2.2 jason 1: /*
2: * Copyright (c) 2000 Markus Friedl. All rights reserved.
3: *
4: * Redistribution and use in source and binary forms, with or without
5: * modification, are permitted provided that the following conditions
6: * are met:
7: * 1. Redistributions of source code must retain the above copyright
8: * notice, this list of conditions and the following disclaimer.
9: * 2. Redistributions in binary form must reproduce the above copyright
10: * notice, this list of conditions and the following disclaimer in the
11: * documentation and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
1.3.2.3 ! jason 24: * $OpenBSD: auth.h,v 1.11 2001/02/12 16:16:23 markus Exp $
1.3.2.2 jason 25: */
1.1 markus 26: #ifndef AUTH_H
27: #define AUTH_H
28:
1.3.2.3 ! jason 29: #include <openssl/rsa.h>
! 30:
1.3.2.2 jason 31: typedef struct Authctxt Authctxt;
32: struct Authctxt {
33: int success;
1.3.2.3 ! jason 34: int postponed;
1.3.2.2 jason 35: int valid;
36: int attempt;
1.3.2.3 ! jason 37: int failures;
1.3.2.2 jason 38: char *user;
39: char *service;
40: struct passwd *pw;
1.3.2.3 ! jason 41: char *style;
1.3.2.2 jason 42: };
43:
1.3.2.3 ! jason 44: /*
! 45: * Tries to authenticate the user using the .rhosts file. Returns true if
! 46: * authentication succeeds. If ignore_rhosts is non-zero, this will not
! 47: * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
! 48: */
! 49: int auth_rhosts(struct passwd * pw, const char *client_user);
! 50:
! 51: /*
! 52: * Tries to authenticate the user using the .rhosts file and the host using
! 53: * its host key. Returns true if authentication succeeds.
! 54: */
! 55: int
! 56: auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
! 57:
! 58: /*
! 59: * Tries to authenticate the user using password. Returns true if
! 60: * authentication succeeds.
! 61: */
! 62: int auth_password(struct passwd * pw, const char *password);
! 63:
! 64: /*
! 65: * Performs the RSA authentication dialog with the client. This returns 0 if
! 66: * the client could not be authenticated, and 1 if authentication was
! 67: * successful. This may exit if there is a serious protocol violation.
! 68: */
! 69: int auth_rsa(struct passwd * pw, BIGNUM * client_n);
! 70:
! 71: /*
! 72: * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
! 73: * over the key. Skips any whitespace at the beginning and at end.
! 74: */
! 75: int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n);
! 76:
! 77: /*
! 78: * Performs the RSA authentication challenge-response dialog with the client,
! 79: * and returns true (non-zero) if the client gave the correct answer to our
! 80: * challenge; returns zero if the client gives a wrong answer.
! 81: */
! 82: int auth_rsa_challenge_dialog(RSA *pk);
! 83:
! 84: #ifdef KRB4
! 85: #include <krb.h>
! 86: /*
! 87: * Performs Kerberos v4 mutual authentication with the client. This returns 0
! 88: * if the client could not be authenticated, and 1 if authentication was
! 89: * successful. This may exit if there is a serious protocol violation.
! 90: */
! 91: int auth_krb4(const char *server_user, KTEXT auth, char **client);
! 92: int krb4_init(uid_t uid);
! 93: void krb4_cleanup_proc(void *ignore);
! 94: int auth_krb4_password(struct passwd * pw, const char *password);
! 95:
! 96: #ifdef AFS
! 97: #include <kafs.h>
! 98:
! 99: /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
! 100: int auth_kerberos_tgt(struct passwd * pw, const char *string);
! 101: int auth_afs_token(struct passwd * pw, const char *token_string);
! 102: #endif /* AFS */
! 103:
! 104: #endif /* KRB4 */
! 105:
1.1 markus 106: void do_authentication(void);
1.2 markus 107: void do_authentication2(void);
108:
1.3.2.3 ! jason 109: Authctxt *authctxt_new(void);
! 110: void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
1.3.2.2 jason 111: void userauth_reply(Authctxt *authctxt, int authenticated);
1.3.2.3 ! jason 112: int auth_root_allowed(char *method);
1.3.2.2 jason 113:
1.3.2.3 ! jason 114: int auth2_challenge(Authctxt *authctxt, char *devs);
1.1 markus 115:
1.3.2.2 jason 116: int allowed_user(struct passwd * pw);
1.3.2.3 ! jason 117:
! 118: char *get_challenge(Authctxt *authctxt, char *devs);
! 119: int verify_response(Authctxt *authctxt, char *response);
! 120:
1.3.2.2 jason 121: struct passwd * auth_get_user(void);
1.3.2.3 ! jason 122: struct passwd * pwcopy(struct passwd *pw);
1.3 markus 123:
124: #define AUTH_FAIL_MAX 6
125: #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
126: #define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
127:
1.1 markus 128: #endif
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