+/* $OpenBSD: auth.h,v 1.39 2002/05/31 11:35:15 markus Exp $ */
+
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
*
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
- * $OpenBSD: auth.h,v 1.21 2001/06/26 16:15:23 dugsong Exp $
*/
+
#ifndef AUTH_H
#define AUTH_H
#endif
typedef struct Authctxt Authctxt;
+typedef struct Authmethod Authmethod;
typedef struct KbdintDevice KbdintDevice;
struct Authctxt {
#endif
};
+struct Authmethod {
+ char *name;
+ int (*userauth)(Authctxt *authctxt);
+ int *enabled;
+};
+
/*
* Keyboard interactive device:
- * init_ctx returns: non NULL upon success
- * query returns: 0 - success, otherwise failure
+ * init_ctx returns: non NULL upon success
+ * query returns: 0 - success, otherwise failure
* respond returns: 0 - success, 1 - need further interaction,
* otherwise - failure
*/
struct KbdintDevice
{
const char *name;
- void* (*init_ctx) __P((Authctxt*));
- int (*query) __P((void *ctx, char **name, char **infotxt,
- u_int *numprompts, char ***prompts,
- u_int **echo_on));
- int (*respond) __P((void *ctx, u_int numresp, char **responses));
- void (*free_ctx) __P((void *ctx));
+ void* (*init_ctx)(Authctxt*);
+ int (*query)(void *ctx, char **name, char **infotxt,
+ u_int *numprompts, char ***prompts, u_int **echo_on);
+ int (*respond)(void *ctx, u_int numresp, char **responses);
+ void (*free_ctx)(void *ctx);
};
-/*
- * Tries to authenticate the user using the .rhosts file. Returns true if
- * authentication succeeds. If ignore_rhosts is non-zero, this will not
- * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
- */
-int auth_rhosts(struct passwd *, const char *);
-
-/* extended interface similar to auth_rhosts() */
+int auth_rhosts(struct passwd *, const char *);
int
auth_rhosts2(struct passwd *, const char *, const char *, const char *);
-/*
- * Tries to authenticate the user using the .rhosts file and the host using
- * its host key. Returns true if authentication succeeds.
- */
-int
-auth_rhosts_rsa(struct passwd *, const char *, RSA *);
-
-/*
- * Tries to authenticate the user using password. Returns true if
- * authentication succeeds.
- */
-int auth_password(Authctxt *, const char *);
-
-/*
- * Performs the RSA authentication dialog with the client. This returns 0 if
- * the client could not be authenticated, and 1 if authentication was
- * successful. This may exit if there is a serious protocol violation.
- */
-int auth_rsa(struct passwd *, BIGNUM *);
+int auth_rhosts_rsa(struct passwd *, char *, Key *);
+int auth_password(Authctxt *, const char *);
+int auth_rsa(struct passwd *, BIGNUM *);
+int auth_rsa_challenge_dialog(Key *);
+BIGNUM *auth_rsa_generate_challenge(Key *);
+int auth_rsa_verify_response(Key *, BIGNUM *, u_char[]);
+int auth_rsa_key_allowed(struct passwd *, BIGNUM *, Key **);
-/*
- * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
- * over the key. Skips any whitespace at the beginning and at end.
- */
-int auth_rsa_read_key(char **, u_int *, BIGNUM *, BIGNUM *);
-
-/*
- * Performs the RSA authentication challenge-response dialog with the client,
- * and returns true (non-zero) if the client gave the correct answer to our
- * challenge; returns zero if the client gives a wrong answer.
- */
-int auth_rsa_challenge_dialog(RSA *);
+int auth_rhosts_rsa_key_allowed(struct passwd *, char *, char *, Key *);
+int hostbased_key_allowed(struct passwd *, const char *, char *, Key *);
+int user_key_allowed(struct passwd *, Key *);
#ifdef KRB4
#include <krb.h>
-/*
- * Performs Kerberos v4 mutual authentication with the client. This returns 0
- * if the client could not be authenticated, and 1 if authentication was
- * successful. This may exit if there is a serious protocol violation.
- */
int auth_krb4(Authctxt *, KTEXT, char **);
int auth_krb4_password(Authctxt *, const char *);
void krb4_cleanup_proc(void *);
#ifdef AFS
#include <kafs.h>
-
-/* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
int auth_krb4_tgt(Authctxt *, const char *);
int auth_afs_token(Authctxt *, const char *);
-#endif /* AFS */
+#endif /* AFS */
-#endif /* KRB4 */
+#endif /* KRB4 */
#ifdef KRB5
int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client);
#include "auth-pam.h"
#include "auth2-pam.h"
-void do_authentication(void);
-void do_authentication2(void);
+Authctxt *do_authentication(void);
+Authctxt *do_authentication2(void);
Authctxt *authctxt_new(void);
void auth_log(Authctxt *, int, char *, char *);
void userauth_finish(Authctxt *, int, char *);
int auth_root_allowed(char *);
+char *auth2_read_banner(void);
+
+void privsep_challenge_enable(void);
+
int auth2_challenge(Authctxt *, char *);
+void auth2_challenge_stop(Authctxt *);
+int bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **);
+int bsdauth_respond(void *, u_int, char **);
+int skey_query(void *, char **, char **, u_int *, char ***, u_int **);
+int skey_respond(void *, u_int, char **);
int allowed_user(struct passwd *);
+struct passwd * getpwnamallow(const char *user);
char *get_challenge(Authctxt *);
int verify_response(Authctxt *, const char *);
struct passwd * auth_get_user(void);
-/* expand a filename - return buffer is allocated by xmalloc */
char *expand_filename(const char *, struct passwd *);
char *authorized_keys_file(struct passwd *);
char *authorized_keys_file2(struct passwd *);
-/* check a file and the path to it */
int
secure_filename(FILE *, const char *, struct passwd *, char *, size_t);
-/* helper for hostbased auth */
HostStatus
check_key_in_hostfiles(struct passwd *, Key *, const char *,
const char *, const char *);
+/* hostkey handling */
+Key *get_hostkey_by_index(int);
+Key *get_hostkey_by_type(int);
+int get_hostkey_index(Key *);
+int ssh1_session_key(BIGNUM *);
+
+/* debug messages during authentication */
+void auth_debug_add(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void auth_debug_send(void);
+void auth_debug_reset(void);
+
#define AUTH_FAIL_MAX 6
#define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
#define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
+#define SKEY_PROMPT "\nS/Key Password: "
#endif