X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/2f293d43d35185df935c5f4e39fa4a246129ecd9..cc365543c473fc49be6e02687ce43d16ef918e67:/auth.h diff --git a/auth.h b/auth.h index 30a635d7..bebfb672 100644 --- a/auth.h +++ b/auth.h @@ -1,3 +1,5 @@ +/* $OpenBSD: auth.h,v 1.63 2009/08/15 18:56:34 fgsch Exp $ */ + /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * @@ -21,13 +23,13 @@ * (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 1.23 2001/12/09 18:45:56 markus Exp $ */ + #ifndef AUTH_H #define AUTH_H -#include "key.h" -#include "hostfile.h" +#include + #include #ifdef HAVE_LOGIN_CAP @@ -41,117 +43,160 @@ #endif typedef struct Authctxt Authctxt; +typedef struct Authmethod Authmethod; typedef struct KbdintDevice KbdintDevice; struct Authctxt { - int success; - int postponed; - int valid; + sig_atomic_t success; + int authenticated; /* authenticated and alarms cancelled */ + int postponed; /* authentication needs another step */ + int valid; /* user exists and is allowed to login */ int attempt; int failures; - char *user; + int force_pwchange; + char *user; /* username sent by the client */ char *service; - struct passwd *pw; + struct passwd *pw; /* set if 'valid' */ char *style; void *kbdintctxt; + void *jpake_ctx; #ifdef BSD_AUTH auth_session_t *as; #endif -#ifdef KRB4 - char *krb4_ticket_file; -#endif #ifdef KRB5 krb5_context krb5_ctx; - krb5_auth_context krb5_auth_ctx; krb5_ccache krb5_fwd_ccache; krb5_principal krb5_user; char *krb5_ticket_file; + char *krb5_ccname; #endif + Buffer *loginmsg; + void *methoddata; +}; +/* + * Every authentication method has to handle authentication requests for + * non-existing users, or for users that are not allowed to login. In this + * case 'valid' is set to 0, but 'user' points to the username requested by + * the client. + */ + +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); }; -int auth_rhosts(struct passwd *, const char *); +int auth_rhosts(struct passwd *, const char *); int auth_rhosts2(struct passwd *, const char *, const char *, const char *); -int auth_rhosts_rsa(struct passwd *, const char *, RSA *); +int auth_rhosts_rsa(Authctxt *, char *, Key *); int auth_password(Authctxt *, const char *); -int auth_rsa(struct passwd *, BIGNUM *); -int auth_rsa_read_key(char **, u_int *, BIGNUM *, BIGNUM *); -int auth_rsa_challenge_dialog(RSA *); - -#ifdef KRB4 -#include -int auth_krb4(Authctxt *, KTEXT, char **); -int auth_krb4_password(Authctxt *, const char *); -void krb4_cleanup_proc(void *); - -#ifdef AFS -#include -int auth_krb4_tgt(Authctxt *, const char *); -int auth_afs_token(Authctxt *, const char *); -#endif /* AFS */ +int auth_rsa(Authctxt *, 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 **); -#endif /* KRB4 */ +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 KRB5 -int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client); +int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client, krb5_data *); int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt); int auth_krb5_password(Authctxt *authctxt, const char *password); -void krb5_cleanup_proc(void *authctxt); +void krb5_cleanup_proc(Authctxt *authctxt); #endif /* KRB5 */ +#if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE) +#include +int auth_shadow_acctexpired(struct spwd *); +int auth_shadow_pwexpired(Authctxt *); +#endif + #include "auth-pam.h" -#include "auth2-pam.h" +#include "audit.h" +void remove_kbdint_device(const char *); + +void disable_forwarding(void); -void do_authentication(void); -void do_authentication2(void); +void do_authentication(Authctxt *); +void do_authentication2(Authctxt *); -Authctxt *authctxt_new(void); void auth_log(Authctxt *, int, char *, char *); void userauth_finish(Authctxt *, int, char *); +void userauth_send_banner(const 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 **); + +void auth2_jpake_get_pwdata(Authctxt *, BIGNUM **, char **, char **); +void auth2_jpake_stop(Authctxt *); int allowed_user(struct passwd *); +struct passwd * getpwnamallow(const char *user); char *get_challenge(Authctxt *); int verify_response(Authctxt *, const char *); +void abandon_challenge_response(Authctxt *); -struct passwd * auth_get_user(void); - -char *expand_filename(const char *, struct passwd *); char *authorized_keys_file(struct passwd *); char *authorized_keys_file2(struct passwd *); -int -secure_filename(FILE *, const char *, struct passwd *, char *, size_t); +FILE *auth_openkeyfile(const char *, struct passwd *, int); HostStatus check_key_in_hostfiles(struct passwd *, Key *, const char *, const char *, const char *); -#define AUTH_FAIL_MAX 6 -#define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2) +/* 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); + +struct passwd *fakepw(void); + +int sys_auth_passwd(Authctxt *, const char *); + #define AUTH_FAIL_MSG "Too many authentication failures for %.100s" +#define SKEY_PROMPT "\nS/Key Password: " + +#if defined(KRB5) && !defined(HEIMDAL) +#include +krb5_error_code ssh_krb5_cc_gen(krb5_context, krb5_ccache *); +#endif #endif