version 1.71, 2001/09/27 15:31:17 |
version 1.71.2.4, 2002/06/22 07:23:16 |
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#include "includes.h" |
#include "includes.h" |
RCSID("$OpenBSD$"); |
RCSID("$OpenBSD$"); |
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#include <openssl/evp.h> |
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|
|
#include "ssh2.h" |
#include "ssh2.h" |
#include "xmalloc.h" |
#include "xmalloc.h" |
#include "rsa.h" |
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#include "sshpty.h" |
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#include "packet.h" |
#include "packet.h" |
#include "buffer.h" |
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#include "log.h" |
#include "log.h" |
#include "servconf.h" |
#include "servconf.h" |
#include "compat.h" |
#include "compat.h" |
#include "channels.h" |
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#include "bufaux.h" |
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#include "auth.h" |
#include "auth.h" |
#include "session.h" |
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#include "dispatch.h" |
#include "dispatch.h" |
#include "key.h" |
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#include "cipher.h" |
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#include "kex.h" |
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#include "pathnames.h" |
#include "pathnames.h" |
#include "uidswap.h" |
#include "monitor_wrap.h" |
#include "auth-options.h" |
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#include "misc.h" |
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#include "hostfile.h" |
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#include "canohost.h" |
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#include "tildexpand.h" |
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#include "match.h" |
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|
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/* import */ |
/* import */ |
extern ServerOptions options; |
extern ServerOptions options; |
extern u_char *session_id2; |
extern u_char *session_id2; |
extern int session_id2_len; |
extern int session_id2_len; |
|
|
static Authctxt *x_authctxt = NULL; |
Authctxt *x_authctxt = NULL; |
static int one = 1; |
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|
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typedef struct Authmethod Authmethod; |
/* methods */ |
struct Authmethod { |
|
char *name; |
extern Authmethod method_none; |
int (*userauth)(Authctxt *authctxt); |
extern Authmethod method_pubkey; |
int *enabled; |
extern Authmethod method_passwd; |
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extern Authmethod method_kbdint; |
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extern Authmethod method_hostbased; |
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|
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Authmethod *authmethods[] = { |
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&method_none, |
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&method_pubkey, |
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&method_passwd, |
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&method_kbdint, |
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&method_hostbased, |
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NULL |
}; |
}; |
|
|
/* protocol */ |
/* protocol */ |
|
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static void input_service_request(int, int, void *); |
static void input_service_request(int, u_int32_t, void *); |
static void input_userauth_request(int, int, void *); |
static void input_userauth_request(int, u_int32_t, void *); |
static void protocol_error(int, int, void *); |
|
|
|
/* helper */ |
/* helper */ |
static Authmethod *authmethod_lookup(const char *); |
static Authmethod *authmethod_lookup(const char *); |
static char *authmethods_get(void); |
static char *authmethods_get(void); |
static int user_key_allowed(struct passwd *, Key *); |
int user_key_allowed(struct passwd *, Key *); |
static int hostbased_key_allowed(struct passwd *, const char *, char *, Key *); |
int hostbased_key_allowed(struct passwd *, const char *, char *, Key *); |
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|
/* auth */ |
|
static void userauth_banner(void); |
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static int userauth_none(Authctxt *); |
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static int userauth_passwd(Authctxt *); |
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static int userauth_pubkey(Authctxt *); |
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static int userauth_hostbased(Authctxt *); |
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static int userauth_kbdint(Authctxt *); |
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|
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Authmethod authmethods[] = { |
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{"none", |
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userauth_none, |
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&one}, |
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{"publickey", |
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userauth_pubkey, |
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&options.pubkey_authentication}, |
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{"password", |
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userauth_passwd, |
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&options.password_authentication}, |
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{"keyboard-interactive", |
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userauth_kbdint, |
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&options.kbd_interactive_authentication}, |
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{"hostbased", |
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userauth_hostbased, |
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&options.hostbased_authentication}, |
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{NULL, NULL, NULL} |
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}; |
|
|
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/* |
/* |
* loop until authctxt->success == TRUE |
* loop until authctxt->success == TRUE |
*/ |
*/ |
|
|
void |
Authctxt * |
do_authentication2() |
do_authentication2(void) |
{ |
{ |
Authctxt *authctxt = authctxt_new(); |
Authctxt *authctxt = authctxt_new(); |
|
|
|
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if (options.challenge_response_authentication) |
if (options.challenge_response_authentication) |
options.kbd_interactive_authentication = 1; |
options.kbd_interactive_authentication = 1; |
|
|
dispatch_init(&protocol_error); |
dispatch_init(&dispatch_protocol_error); |
dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request); |
dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request); |
dispatch_run(DISPATCH_BLOCK, &authctxt->success, authctxt); |
dispatch_run(DISPATCH_BLOCK, &authctxt->success, authctxt); |
do_authenticated(authctxt); |
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} |
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|
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static void |
return (authctxt); |
protocol_error(int type, int plen, void *ctxt) |
|
{ |
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log("auth: protocol error: type %d plen %d", type, plen); |
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packet_start(SSH2_MSG_UNIMPLEMENTED); |
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packet_put_int(0); |
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packet_send(); |
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packet_write_wait(); |
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} |
} |
|
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static void |
static void |
input_service_request(int type, int plen, void *ctxt) |
input_service_request(int type, u_int32_t seq, void *ctxt) |
{ |
{ |
Authctxt *authctxt = ctxt; |
Authctxt *authctxt = ctxt; |
u_int len; |
u_int len; |
int accept = 0; |
int accept = 0; |
char *service = packet_get_string(&len); |
char *service = packet_get_string(&len); |
packet_done(); |
packet_check_eom(); |
|
|
if (authctxt == NULL) |
if (authctxt == NULL) |
fatal("input_service_request: no authctxt"); |
fatal("input_service_request: no authctxt"); |
|
|
} |
} |
|
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static void |
static void |
input_userauth_request(int type, int plen, void *ctxt) |
input_userauth_request(int type, u_int32_t seq, void *ctxt) |
{ |
{ |
Authctxt *authctxt = ctxt; |
Authctxt *authctxt = ctxt; |
Authmethod *m = NULL; |
Authmethod *m = NULL; |
|
|
|
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if (authctxt->attempt++ == 0) { |
if (authctxt->attempt++ == 0) { |
/* setup auth context */ |
/* setup auth context */ |
struct passwd *pw = NULL; |
authctxt->pw = PRIVSEP(getpwnamallow(user)); |
pw = getpwnam(user); |
if (authctxt->pw && strcmp(service, "ssh-connection")==0) { |
if (pw && allowed_user(pw) && strcmp(service, "ssh-connection")==0) { |
|
authctxt->pw = pwcopy(pw); |
|
authctxt->valid = 1; |
authctxt->valid = 1; |
debug2("input_userauth_request: setting up authctxt for %s", user); |
debug2("input_userauth_request: setting up authctxt for %s", user); |
} else { |
} else { |
log("input_userauth_request: illegal user %s", user); |
log("input_userauth_request: illegal user %s", user); |
} |
} |
setproctitle("%s", pw ? user : "unknown"); |
setproctitle("%s%s", authctxt->pw ? user : "unknown", |
|
use_privsep ? " [net]" : ""); |
authctxt->user = xstrdup(user); |
authctxt->user = xstrdup(user); |
authctxt->service = xstrdup(service); |
authctxt->service = xstrdup(service); |
authctxt->style = style ? xstrdup(style) : NULL; |
authctxt->style = style ? xstrdup(style) : NULL; |
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if (use_privsep) |
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mm_inform_authserv(service, style); |
} else if (strcmp(user, authctxt->user) != 0 || |
} else if (strcmp(user, authctxt->user) != 0 || |
strcmp(service, authctxt->service) != 0) { |
strcmp(service, authctxt->service) != 0) { |
packet_disconnect("Change of username or service not allowed: " |
packet_disconnect("Change of username or service not allowed: " |
|
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authctxt->user, authctxt->service, user, service); |
authctxt->user, authctxt->service, user, service); |
} |
} |
/* reset state */ |
/* reset state */ |
dispatch_set(SSH2_MSG_USERAUTH_INFO_RESPONSE, &protocol_error); |
auth2_challenge_stop(authctxt); |
authctxt->postponed = 0; |
authctxt->postponed = 0; |
#ifdef BSD_AUTH |
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if (authctxt->as) { |
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auth_close(authctxt->as); |
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authctxt->as = NULL; |
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} |
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#endif |
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/* try to authenticate user */ |
/* try to authenticate user */ |
m = authmethod_lookup(method); |
m = authmethod_lookup(method); |
|
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/* XXX todo: check if multiple auth methods are needed */ |
/* XXX todo: check if multiple auth methods are needed */ |
if (authenticated == 1) { |
if (authenticated == 1) { |
/* turn off userauth */ |
/* turn off userauth */ |
dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &protocol_error); |
dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &dispatch_protocol_ignore); |
packet_start(SSH2_MSG_USERAUTH_SUCCESS); |
packet_start(SSH2_MSG_USERAUTH_SUCCESS); |
packet_send(); |
packet_send(); |
packet_write_wait(); |
packet_write_wait(); |
|
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} |
} |
} |
} |
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static void |
|
userauth_banner(void) |
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{ |
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struct stat st; |
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char *banner = NULL; |
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off_t len, n; |
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int fd; |
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|
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if (options.banner == NULL || (datafellows & SSH_BUG_BANNER)) |
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return; |
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if ((fd = open(options.banner, O_RDONLY)) < 0) |
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return; |
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if (fstat(fd, &st) < 0) |
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goto done; |
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len = st.st_size; |
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banner = xmalloc(len + 1); |
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if ((n = read(fd, banner, len)) < 0) |
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goto done; |
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banner[n] = '\0'; |
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packet_start(SSH2_MSG_USERAUTH_BANNER); |
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packet_put_cstring(banner); |
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packet_put_cstring(""); /* language, unused */ |
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packet_send(); |
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debug("userauth_banner: sent"); |
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done: |
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if (banner) |
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xfree(banner); |
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close(fd); |
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return; |
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} |
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static int |
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userauth_none(Authctxt *authctxt) |
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{ |
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/* disable method "none", only allowed one time */ |
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Authmethod *m = authmethod_lookup("none"); |
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if (m != NULL) |
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m->enabled = NULL; |
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packet_done(); |
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userauth_banner(); |
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return authctxt->valid ? auth_password(authctxt, "") : 0; |
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} |
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static int |
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userauth_passwd(Authctxt *authctxt) |
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{ |
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char *password; |
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int authenticated = 0; |
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int change; |
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u_int len; |
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change = packet_get_char(); |
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if (change) |
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log("password change not supported"); |
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password = packet_get_string(&len); |
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packet_done(); |
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if (authctxt->valid && |
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auth_password(authctxt, password) == 1) |
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authenticated = 1; |
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memset(password, 0, len); |
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xfree(password); |
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return authenticated; |
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} |
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static int |
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userauth_kbdint(Authctxt *authctxt) |
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{ |
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int authenticated = 0; |
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char *lang, *devs; |
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|
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lang = packet_get_string(NULL); |
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devs = packet_get_string(NULL); |
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packet_done(); |
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debug("keyboard-interactive devs %s", devs); |
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|
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if (options.challenge_response_authentication) |
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authenticated = auth2_challenge(authctxt, devs); |
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|
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xfree(devs); |
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xfree(lang); |
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return authenticated; |
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} |
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static int |
|
userauth_pubkey(Authctxt *authctxt) |
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{ |
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Buffer b; |
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Key *key; |
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char *pkalg, *pkblob, *sig; |
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u_int alen, blen, slen; |
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int have_sig, pktype; |
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int authenticated = 0; |
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|
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if (!authctxt->valid) { |
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debug2("userauth_pubkey: disabled because of invalid user"); |
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return 0; |
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} |
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have_sig = packet_get_char(); |
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if (datafellows & SSH_BUG_PKAUTH) { |
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debug2("userauth_pubkey: SSH_BUG_PKAUTH"); |
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/* no explicit pkalg given */ |
|
pkblob = packet_get_string(&blen); |
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buffer_init(&b); |
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buffer_append(&b, pkblob, blen); |
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/* so we have to extract the pkalg from the pkblob */ |
|
pkalg = buffer_get_string(&b, &alen); |
|
buffer_free(&b); |
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} else { |
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pkalg = packet_get_string(&alen); |
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pkblob = packet_get_string(&blen); |
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} |
|
pktype = key_type_from_name(pkalg); |
|
if (pktype == KEY_UNSPEC) { |
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/* this is perfectly legal */ |
|
log("userauth_pubkey: unsupported public key algorithm: %s", pkalg); |
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xfree(pkalg); |
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xfree(pkblob); |
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return 0; |
|
} |
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key = key_from_blob(pkblob, blen); |
|
if (key != NULL) { |
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if (have_sig) { |
|
sig = packet_get_string(&slen); |
|
packet_done(); |
|
buffer_init(&b); |
|
if (datafellows & SSH_OLD_SESSIONID) { |
|
buffer_append(&b, session_id2, session_id2_len); |
|
} else { |
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buffer_put_string(&b, session_id2, session_id2_len); |
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} |
|
/* reconstruct packet */ |
|
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST); |
|
buffer_put_cstring(&b, authctxt->user); |
|
buffer_put_cstring(&b, |
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datafellows & SSH_BUG_PKSERVICE ? |
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"ssh-userauth" : |
|
authctxt->service); |
|
if (datafellows & SSH_BUG_PKAUTH) { |
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buffer_put_char(&b, have_sig); |
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} else { |
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buffer_put_cstring(&b, "publickey"); |
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buffer_put_char(&b, have_sig); |
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buffer_put_cstring(&b, pkalg); |
|
} |
|
buffer_put_string(&b, pkblob, blen); |
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#ifdef DEBUG_PK |
|
buffer_dump(&b); |
|
#endif |
|
/* test for correct signature */ |
|
if (user_key_allowed(authctxt->pw, key) && |
|
key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1) |
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authenticated = 1; |
|
buffer_clear(&b); |
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xfree(sig); |
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} else { |
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debug("test whether pkalg/pkblob are acceptable"); |
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packet_done(); |
|
|
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/* XXX fake reply and always send PK_OK ? */ |
|
/* |
|
* XXX this allows testing whether a user is allowed |
|
* to login: if you happen to have a valid pubkey this |
|
* message is sent. the message is NEVER sent at all |
|
* if a user is not allowed to login. is this an |
|
* issue? -markus |
|
*/ |
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if (user_key_allowed(authctxt->pw, key)) { |
|
packet_start(SSH2_MSG_USERAUTH_PK_OK); |
|
packet_put_string(pkalg, alen); |
|
packet_put_string(pkblob, blen); |
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packet_send(); |
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packet_write_wait(); |
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authctxt->postponed = 1; |
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} |
|
} |
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if (authenticated != 1) |
|
auth_clear_options(); |
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key_free(key); |
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} |
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debug2("userauth_pubkey: authenticated %d pkalg %s", authenticated, pkalg); |
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xfree(pkalg); |
|
xfree(pkblob); |
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return authenticated; |
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} |
|
|
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static int |
|
userauth_hostbased(Authctxt *authctxt) |
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{ |
|
Buffer b; |
|
Key *key; |
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char *pkalg, *pkblob, *sig, *cuser, *chost, *service; |
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u_int alen, blen, slen; |
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int pktype; |
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int authenticated = 0; |
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|
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if (!authctxt->valid) { |
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debug2("userauth_hostbased: disabled because of invalid user"); |
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return 0; |
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} |
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pkalg = packet_get_string(&alen); |
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pkblob = packet_get_string(&blen); |
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chost = packet_get_string(NULL); |
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cuser = packet_get_string(NULL); |
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sig = packet_get_string(&slen); |
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|
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debug("userauth_hostbased: cuser %s chost %s pkalg %s slen %d", |
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cuser, chost, pkalg, slen); |
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#ifdef DEBUG_PK |
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debug("signature:"); |
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buffer_init(&b); |
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buffer_append(&b, sig, slen); |
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buffer_dump(&b); |
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buffer_free(&b); |
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#endif |
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pktype = key_type_from_name(pkalg); |
|
if (pktype == KEY_UNSPEC) { |
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/* this is perfectly legal */ |
|
log("userauth_hostbased: unsupported " |
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"public key algorithm: %s", pkalg); |
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goto done; |
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} |
|
key = key_from_blob(pkblob, blen); |
|
if (key == NULL) { |
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debug("userauth_hostbased: cannot decode key: %s", pkalg); |
|
goto done; |
|
} |
|
service = datafellows & SSH_BUG_HBSERVICE ? "ssh-userauth" : |
|
authctxt->service; |
|
buffer_init(&b); |
|
buffer_put_string(&b, session_id2, session_id2_len); |
|
/* reconstruct packet */ |
|
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST); |
|
buffer_put_cstring(&b, authctxt->user); |
|
buffer_put_cstring(&b, service); |
|
buffer_put_cstring(&b, "hostbased"); |
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buffer_put_string(&b, pkalg, alen); |
|
buffer_put_string(&b, pkblob, blen); |
|
buffer_put_cstring(&b, chost); |
|
buffer_put_cstring(&b, cuser); |
|
#ifdef DEBUG_PK |
|
buffer_dump(&b); |
|
#endif |
|
/* test for allowed key and correct signature */ |
|
if (hostbased_key_allowed(authctxt->pw, cuser, chost, key) && |
|
key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1) |
|
authenticated = 1; |
|
|
|
buffer_clear(&b); |
|
key_free(key); |
|
|
|
done: |
|
debug2("userauth_hostbased: authenticated %d", authenticated); |
|
xfree(pkalg); |
|
xfree(pkblob); |
|
xfree(cuser); |
|
xfree(chost); |
|
xfree(sig); |
|
return authenticated; |
|
} |
|
|
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/* get current user */ |
/* get current user */ |
|
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struct passwd* |
struct passwd* |
|
|
static char * |
static char * |
authmethods_get(void) |
authmethods_get(void) |
{ |
{ |
Authmethod *method = NULL; |
Buffer b; |
u_int size = 0; |
|
char *list; |
char *list; |
|
int i; |
|
|
for (method = authmethods; method->name != NULL; method++) { |
buffer_init(&b); |
if (strcmp(method->name, "none") == 0) |
for (i = 0; authmethods[i] != NULL; i++) { |
|
if (strcmp(authmethods[i]->name, "none") == 0) |
continue; |
continue; |
if (method->enabled != NULL && *(method->enabled) != 0) { |
if (authmethods[i]->enabled != NULL && |
if (size != 0) |
*(authmethods[i]->enabled) != 0) { |
size += strlen(DELIM); |
if (buffer_len(&b) > 0) |
size += strlen(method->name); |
buffer_append(&b, ",", 1); |
|
buffer_append(&b, authmethods[i]->name, |
|
strlen(authmethods[i]->name)); |
} |
} |
} |
} |
size++; /* trailing '\0' */ |
buffer_append(&b, "\0", 1); |
list = xmalloc(size); |
list = xstrdup(buffer_ptr(&b)); |
list[0] = '\0'; |
buffer_free(&b); |
|
|
for (method = authmethods; method->name != NULL; method++) { |
|
if (strcmp(method->name, "none") == 0) |
|
continue; |
|
if (method->enabled != NULL && *(method->enabled) != 0) { |
|
if (list[0] != '\0') |
|
strlcat(list, DELIM, size); |
|
strlcat(list, method->name, size); |
|
} |
|
} |
|
return list; |
return list; |
} |
} |
|
|
static Authmethod * |
static Authmethod * |
authmethod_lookup(const char *name) |
authmethod_lookup(const char *name) |
{ |
{ |
Authmethod *method = NULL; |
int i; |
|
|
if (name != NULL) |
if (name != NULL) |
for (method = authmethods; method->name != NULL; method++) |
for (i = 0; authmethods[i] != NULL; i++) |
if (method->enabled != NULL && |
if (authmethods[i]->enabled != NULL && |
*(method->enabled) != 0 && |
*(authmethods[i]->enabled) != 0 && |
strcmp(name, method->name) == 0) |
strcmp(name, authmethods[i]->name) == 0) |
return method; |
return authmethods[i]; |
debug2("Unrecognized authentication method name: %s", name ? name : "NULL"); |
debug2("Unrecognized authentication method name: %s", |
|
name ? name : "NULL"); |
return NULL; |
return NULL; |
} |
} |
|
|
/* return 1 if user allows given key */ |
|
static int |
|
user_key_allowed2(struct passwd *pw, Key *key, char *file) |
|
{ |
|
char line[8192]; |
|
int found_key = 0; |
|
FILE *f; |
|
u_long linenum = 0; |
|
struct stat st; |
|
Key *found; |
|
|
|
if (pw == NULL) |
|
return 0; |
|
|
|
/* Temporarily use the user's uid. */ |
|
temporarily_use_uid(pw); |
|
|
|
debug("trying public key file %s", file); |
|
|
|
/* Fail quietly if file does not exist */ |
|
if (stat(file, &st) < 0) { |
|
/* Restore the privileged uid. */ |
|
restore_uid(); |
|
return 0; |
|
} |
|
/* Open the file containing the authorized keys. */ |
|
f = fopen(file, "r"); |
|
if (!f) { |
|
/* Restore the privileged uid. */ |
|
restore_uid(); |
|
return 0; |
|
} |
|
if (options.strict_modes && |
|
secure_filename(f, file, pw, line, sizeof(line)) != 0) { |
|
fclose(f); |
|
log("Authentication refused: %s", line); |
|
restore_uid(); |
|
return 0; |
|
} |
|
|
|
found_key = 0; |
|
found = key_new(key->type); |
|
|
|
while (fgets(line, sizeof(line), f)) { |
|
char *cp, *options = NULL; |
|
linenum++; |
|
/* Skip leading whitespace, empty and comment lines. */ |
|
for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
|
; |
|
if (!*cp || *cp == '\n' || *cp == '#') |
|
continue; |
|
|
|
if (key_read(found, &cp) != 1) { |
|
/* no key? check if there are options for this key */ |
|
int quoted = 0; |
|
debug2("user_key_allowed: check options: '%s'", cp); |
|
options = cp; |
|
for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) { |
|
if (*cp == '\\' && cp[1] == '"') |
|
cp++; /* Skip both */ |
|
else if (*cp == '"') |
|
quoted = !quoted; |
|
} |
|
/* Skip remaining whitespace. */ |
|
for (; *cp == ' ' || *cp == '\t'; cp++) |
|
; |
|
if (key_read(found, &cp) != 1) { |
|
debug2("user_key_allowed: advance: '%s'", cp); |
|
/* still no key? advance to next line*/ |
|
continue; |
|
} |
|
} |
|
if (key_equal(found, key) && |
|
auth_parse_options(pw, options, file, linenum) == 1) { |
|
found_key = 1; |
|
debug("matching key found: file %s, line %lu", |
|
file, linenum); |
|
break; |
|
} |
|
} |
|
restore_uid(); |
|
fclose(f); |
|
key_free(found); |
|
if (!found_key) |
|
debug2("key not found"); |
|
return found_key; |
|
} |
|
|
|
/* check whether given key is in .ssh/authorized_keys* */ |
|
static int |
|
user_key_allowed(struct passwd *pw, Key *key) |
|
{ |
|
int success; |
|
char *file; |
|
|
|
file = authorized_keys_file(pw); |
|
success = user_key_allowed2(pw, key, file); |
|
xfree(file); |
|
if (success) |
|
return success; |
|
|
|
/* try suffix "2" for backward compat, too */ |
|
file = authorized_keys_file2(pw); |
|
success = user_key_allowed2(pw, key, file); |
|
xfree(file); |
|
return success; |
|
} |
|
|
|
/* return 1 if given hostkey is allowed */ |
|
static int |
|
hostbased_key_allowed(struct passwd *pw, const char *cuser, char *chost, |
|
Key *key) |
|
{ |
|
const char *resolvedname, *ipaddr, *lookup; |
|
int host_status, len; |
|
|
|
resolvedname = get_canonical_hostname(options.reverse_mapping_check); |
|
ipaddr = get_remote_ipaddr(); |
|
|
|
debug2("userauth_hostbased: chost %s resolvedname %s ipaddr %s", |
|
chost, resolvedname, ipaddr); |
|
|
|
if (options.hostbased_uses_name_from_packet_only) { |
|
if (auth_rhosts2(pw, cuser, chost, chost) == 0) |
|
return 0; |
|
lookup = chost; |
|
} else { |
|
if (((len = strlen(chost)) > 0) && chost[len - 1] == '.') { |
|
debug2("stripping trailing dot from chost %s", chost); |
|
chost[len - 1] = '\0'; |
|
} |
|
if (strcasecmp(resolvedname, chost) != 0) |
|
log("userauth_hostbased mismatch: " |
|
"client sends %s, but we resolve %s to %s", |
|
chost, ipaddr, resolvedname); |
|
if (auth_rhosts2(pw, cuser, resolvedname, ipaddr) == 0) |
|
return 0; |
|
lookup = resolvedname; |
|
} |
|
debug2("userauth_hostbased: access allowed by auth_rhosts2"); |
|
|
|
host_status = check_key_in_hostfiles(pw, key, lookup, |
|
_PATH_SSH_SYSTEM_HOSTFILE, |
|
options.ignore_user_known_hosts ? NULL : _PATH_SSH_USER_HOSTFILE); |
|
|
|
/* backward compat if no key has been found. */ |
|
if (host_status == HOST_NEW) |
|
host_status = check_key_in_hostfiles(pw, key, lookup, |
|
_PATH_SSH_SYSTEM_HOSTFILE2, |
|
options.ignore_user_known_hosts ? NULL : |
|
_PATH_SSH_USER_HOSTFILE2); |
|
|
|
return (host_status == HOST_OK); |
|
} |
|
|
|