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--- auth1.c.orig Wed Jun 19 02:27:55 2002
+++ auth1.c Fri Jun 28 06:45:24 2002
@@ -26,6 +26,15 @@
#include "session.h"
#include "uidswap.h"
#include "monitor_wrap.h"
+#include "canohost.h"
+
+#ifdef HAVE_LOGIN_CAP
+#include <login_cap.h>
+#endif /* HAVE_LOGIN_CAP */
+#ifdef USE_PAM
+#include "auth-pam.h"
+#include <security/pam_appl.h>
+#endif /* USE_PAM */
/* import */
extern ServerOptions options;
@@ -75,6 +84,16 @@
u_int ulen;
int type = 0;
struct passwd *pw = authctxt->pw;
+#ifdef HAVE_LOGIN_CAP
+ login_cap_t *lc;
+#endif /* HAVE_LOGIN_CAP */
+#ifdef USE_PAM
+ struct inverted_pam_cookie *pam_cookie;
+#endif /* USE_PAM */
+ const char *from_host, *from_ip;
+
+ from_host = get_canonical_hostname(options.verify_reverse_mapping);
+ from_ip = get_remote_ipaddr();
debug("Attempting authentication for %s%.100s.",
authctxt->valid ? "" : "illegal user ", authctxt->user);
@@ -84,7 +103,11 @@
#if defined(KRB4) || defined(KRB5)
(!options.kerberos_authentication || options.kerberos_or_local_passwd) &&
#endif
- PRIVSEP(auth_password(authctxt, ""))) {
+#ifdef USE_PAM
+ PRIVSEP(auth_pam_password(authctxt, ""))) {
+#else
+ PRIVSEP(auth_password(authctxt, ""))) {
+#endif /* USE_PAM */
auth_log(authctxt, 1, "without authentication", "");
return;
}
@@ -94,6 +117,8 @@
packet_send();
packet_write_wait();
+ client_user = NULL;
+
for (;;) {
/* default to fail */
authenticated = 0;
@@ -243,12 +268,48 @@
packet_check_eom();
/* Try authentication with the password. */
- authenticated = PRIVSEP(auth_password(authctxt, password));
+ authenticated =
+#ifdef USE_PAM
+ PRIVSEP(auth_pam_password(authctxt, password));
+#else
+ PRIVSEP(auth_password(authctxt, password));
+#endif /* USE_PAM */
memset(password, 0, strlen(password));
xfree(password);
break;
+#ifdef USE_PAM
+ case SSH_CMSG_AUTH_TIS:
+ debug("rcvd SSH_CMSG_AUTH_TIS: Trying PAM");
+ pam_cookie = ipam_start_auth("sshd", pw->pw_name);
+ /* We now have data available to send as a challenge */
+ if (pam_cookie->num_msg != 1 ||
+ (pam_cookie->msg[0]->msg_style != PAM_PROMPT_ECHO_OFF &&
+ pam_cookie->msg[0]->msg_style != PAM_PROMPT_ECHO_ON)) {
+ /* We got several challenges or an unknown challenge type */
+ ipam_free_cookie(pam_cookie);
+ pam_cookie = NULL;
+ break;
+ }
+ packet_start(SSH_SMSG_AUTH_TIS_CHALLENGE);
+ packet_put_string(pam_cookie->msg[0]->msg, strlen(pam_cookie->msg[0]->msg));
+ packet_send();
+ packet_write_wait();
+ continue;
+ case SSH_CMSG_AUTH_TIS_RESPONSE:
+ debug("rcvd SSH_CMSG_AUTH_TIS_RESPONSE");
+ if (pam_cookie != NULL) {
+ char *response = packet_get_string(&dlen);
+
+ pam_cookie->resp[0]->resp = strdup(response);
+ xfree(response);
+ authenticated = ipam_complete_auth(pam_cookie);
+ ipam_free_cookie(pam_cookie);
+ pam_cookie = NULL;
+ }
+ break;
+#elif defined(SKEY)
case SSH_CMSG_AUTH_TIS:
debug("rcvd SSH_CMSG_AUTH_TIS");
if (options.challenge_response_authentication == 1) {
@@ -275,6 +336,12 @@
xfree(response);
}
break;
+#else
+ case SSH_CMSG_AUTH_TIS:
+ /* TIS Authentication is unsupported */
+ log("TIS authentication unsupported.");
+ break;
+#endif
default:
/*
@@ -284,6 +351,34 @@
log("Unknown message during authentication: type %d", type);
break;
}
+
+#ifdef HAVE_LOGIN_CAP
+ if (pw != NULL) {
+ lc = login_getpwclass(pw);
+ if (lc == NULL)
+ lc = login_getclassbyname(NULL, pw);
+ if (!auth_hostok(lc, from_host, from_ip)) {
+ log("Denied connection for %.200s from %.200s [%.200s].",
+ pw->pw_name, from_host, from_ip);
+ packet_disconnect("Sorry, you are not allowed to connect.");
+ }
+ if (!auth_timeok(lc, time(NULL))) {
+ log("LOGIN %.200s REFUSED (TIME) FROM %.200s",
+ pw->pw_name, from_host);
+ packet_disconnect("Logins not available right now.");
+ }
+ login_close(lc);
+ lc = NULL;
+ }
+#endif /* HAVE_LOGIN_CAP */
+#ifdef LOGIN_ACCESS
+ if (pw != NULL && !login_access(pw->pw_name, from_host)) {
+ log("Denied connection for %.200s from %.200s [%.200s].",
+ pw->pw_name, from_host, from_ip);
+ packet_disconnect("Sorry, you are not allowed to connect.");
+ }
+#endif /* LOGIN_ACCESS */
+
#ifdef BSD_AUTH
if (authctxt->as) {
auth_close(authctxt->as);
@@ -299,9 +394,23 @@
!auth_root_allowed(get_authname(type)))
authenticated = 0;
+ if (pw != NULL && pw->pw_uid == 0)
+ log("ROOT LOGIN as '%.100s' from %.100s",
+ pw->pw_name, from_host);
+
/* Log before sending the reply */
auth_log(authctxt, authenticated, get_authname(type), info);
+#ifdef USE_PAM
+ if (authenticated && !do_pam_account(pw->pw_name, client_user))
+ authenticated = 0;
+#endif
+
+ if (client_user != NULL) {
+ xfree(client_user);
+ client_user = NULL;
+ }
+
if (authenticated)
return;
@@ -354,6 +463,11 @@
authctxt->valid = 1;
else
debug("do_authentication: illegal user %s", user);
+
+#ifdef USE_PAM
+ if (authctxt->pw != NULL)
+ start_pam(authctxt->pw);
+#endif
setproctitle("%s%s", authctxt->pw ? user : "unknown",
use_privsep ? " [net]" : "");
|
