11 files changed, 12 insertions, 172 deletions

diff --git a/ChangeLog b/ChangeLog
index be302d9b6..ae2cf5119 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+20090308
+ - (dtucker) [auth-passwd.c auth1.c auth2-kbdint.c auth2-none.c auth2-passwd.c
+   auth2-pubkey.c session.c openbsd-compat/bsd-cygwin_util.{c,h}
+   openbsd-compat/daemon.c] Remove support for Windows 95/98/ME and very old
+   version of Cygwin.  Patch from vinschen at redhat com.
+
 20090307
  - (dtucker) [contrib/aix/buildbff.sh] Only try to rename ssh_prng_cmds if it
    exists (it's not created if OpenSSL's PRNG is self-seeded, eg if the OS
diff --git a/auth-passwd.c b/auth-passwd.c
index bdfced023..b1c6ce092 100644
--- a/auth-passwd.c
+++ b/auth-passwd.c
@@ -102,7 +102,7 @@ auth_password(Authctxt *authctxt, const char *password)
         }
 #endif
 #ifdef HAVE_CYGWIN
-        if (is_winnt) {
+        {
                 HANDLE hToken = cygwin_logon_user(pw, password);
 
                 if (hToken == INVALID_HANDLE_VALUE)
diff --git a/auth1.c b/auth1.c
index b8a255872..1801661fd 100644
--- a/auth1.c
+++ b/auth1.c
@@ -318,15 +318,7 @@ do_authloop(Authctxt *authctxt)
                 }
 #endif /* _UNICOS */
 
-#ifdef HAVE_CYGWIN
-                if (authenticated &&
-                    !check_nt_auth(type == SSH_CMSG_AUTH_PASSWORD,
-                    authctxt->pw)) {
-                        packet_disconnect("Authentication rejected for uid %d.",
-                            authctxt->pw == NULL ? -1 : authctxt->pw->pw_uid);
-                        authenticated = 0;
-                }
-#else
+#ifndef HAVE_CYGWIN
                 /* Special handling for root */
                 if (authenticated && authctxt->pw->pw_uid == 0 &&
                     !auth_root_allowed(meth->name)) {
diff --git a/auth2-kbdint.c b/auth2-kbdint.c
index a4fc9e6f7..fae67da6e 100644
--- a/auth2-kbdint.c
+++ b/auth2-kbdint.c
@@ -58,10 +58,6 @@ userauth_kbdint(Authctxt *authctxt)
 
         xfree(devs);
         xfree(lang);
-#ifdef HAVE_CYGWIN
-        if (check_nt_auth(0, authctxt->pw) == 0)
-                authenticated = 0;
-#endif
         return authenticated;
 }
 
diff --git a/auth2-none.c b/auth2-none.c
index 10accfe55..08f2f935f 100644
--- a/auth2-none.c
+++ b/auth2-none.c
@@ -61,10 +61,6 @@ userauth_none(Authctxt *authctxt)
 {
         none_enabled = 0;
         packet_check_eom();
-#ifdef HAVE_CYGWIN
-        if (check_nt_auth(1, authctxt->pw) == 0)
-                return (0);
-#endif
         if (options.password_authentication)
                 return (PRIVSEP(auth_password(authctxt, "")));
         return (0);
diff --git a/auth2-passwd.c b/auth2-passwd.c
index 421c5c25d..5f1f3635f 100644
--- a/auth2-passwd.c
+++ b/auth2-passwd.c
@@ -68,10 +68,6 @@ userauth_passwd(Authctxt *authctxt)
                 logit("password change not supported");
         else if (PRIVSEP(auth_password(authctxt, password)) == 1)
                 authenticated = 1;
-#ifdef HAVE_CYGWIN
-        if (check_nt_auth(1, authctxt->pw) == 0)
-                authenticated = 0;
-#endif
         memset(password, 0, len);
         xfree(password);
         return authenticated;
diff --git a/auth2-pubkey.c b/auth2-pubkey.c
index b1e38e5f5..2886f1275 100644
--- a/auth2-pubkey.c
+++ b/auth2-pubkey.c
@@ -170,10 +170,6 @@ done:
                 key_free(key);
         xfree(pkalg);
         xfree(pkblob);
-#ifdef HAVE_CYGWIN
-        if (check_nt_auth(0, authctxt->pw) == 0)
-                authenticated = 0;
-#endif
         return authenticated;
 }
 
diff --git a/openbsd-compat/bsd-cygwin_util.c b/openbsd-compat/bsd-cygwin_util.c
index 38be7e350..e90c1597f 100644
--- a/openbsd-compat/bsd-cygwin_util.c
+++ b/openbsd-compat/bsd-cygwin_util.c
@@ -39,9 +39,6 @@
 #endif
 
 #include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/utsname.h>
-#include <sys/vfs.h>
 
 #include <fcntl.h>
 #include <stdlib.h>
@@ -49,11 +46,6 @@
 #include <windows.h>
 
 #include "xmalloc.h"
-#define is_winnt       (GetVersion() < 0x80000000)
-
-#define ntsec_on(c)     ((c) && strstr((c),"ntsec") && !strstr((c),"nontsec"))
-#define ntsec_off(c)    ((c) && strstr((c),"nontsec"))
-#define ntea_on(c)      ((c) && strstr((c),"ntea") && !strstr((c),"nontea"))
 
 int 
 binary_open(const char *filename, int flags, ...)
@@ -79,128 +71,12 @@ binary_pipe(int fd[2])
         return (ret);
 }
 
-#define HAS_CREATE_TOKEN 1
-#define HAS_NTSEC_BY_DEFAULT 2
-#define HAS_CREATE_TOKEN_WO_NTSEC 3
-
-static int 
-has_capability(int what)
-{
-        static int inited;
-        static int has_create_token;
-        static int has_ntsec_by_default;
-        static int has_create_token_wo_ntsec;
-
-        /* 
-         * has_capability() basically calls uname() and checks if
-         * specific capabilities of Cygwin can be evaluated from that.
-         * This simplifies the calling functions which only have to ask
-         * for a capability using has_capability() instead of having
-         * to figure that out by themselves.
-         */
-        if (!inited) {
-                struct utsname uts;
-                
-                if (!uname(&uts)) {
-                        int major_high = 0, major_low = 0, minor = 0;
-                        int api_major_version = 0, api_minor_version = 0;
-                        char *c;
-
-                        sscanf(uts.release, "%d.%d.%d", &major_high,
-                            &major_low, &minor);
-                        if ((c = strchr(uts.release, '(')) != NULL) {
-                                sscanf(c + 1, "%d.%d", &api_major_version,
-                                    &api_minor_version);
-                        }
-                        if (major_high > 1 ||
-                            (major_high == 1 && (major_low > 3 ||
-                            (major_low == 3 && minor >= 2))))
-                                has_create_token = 1;
-                        if (api_major_version > 0 || api_minor_version >= 56)
-                                has_ntsec_by_default = 1;
-                        if (major_high > 1 ||
-                            (major_high == 1 && major_low >= 5))
-                                has_create_token_wo_ntsec = 1;
-                        inited = 1;
-                }
-        }
-        switch (what) {
-        case HAS_CREATE_TOKEN:
-                return (has_create_token);
-        case HAS_NTSEC_BY_DEFAULT:
-                return (has_ntsec_by_default);
-        case HAS_CREATE_TOKEN_WO_NTSEC:
-                return (has_create_token_wo_ntsec);
-        }
-        return (0);
-}
-
-int
-check_nt_auth(int pwd_authenticated, struct passwd *pw)
-{
-        /*
-        * The only authentication which is able to change the user
-        * context on NT systems is the password authentication. So
-        * we deny all requsts for changing the user context if another
-        * authentication method is used.
-        *
-        * This doesn't apply to Cygwin versions >= 1.3.2 anymore which
-        * uses the undocumented NtCreateToken() call to create a user
-        * token if the process has the appropriate privileges and if
-        * CYGWIN ntsec setting is on.
-        */
-        static int has_create_token = -1;
-
-        if (pw == NULL)
-                return 0;
-        if (is_winnt) {
-                if (has_create_token < 0) {
-                        char *cygwin = getenv("CYGWIN");
-
-                        has_create_token = 0;
-                        if (has_capability(HAS_CREATE_TOKEN) &&
-                            (ntsec_on(cygwin) ||
-                            (has_capability(HAS_NTSEC_BY_DEFAULT) &&
-                             !ntsec_off(cygwin)) ||
-                             has_capability(HAS_CREATE_TOKEN_WO_NTSEC)))
-                                has_create_token = 1;
-                }
-                if (has_create_token < 1 &&
-                    !pwd_authenticated && geteuid() != pw->pw_uid)
-                        return (0);
-        }
-        return (1);
-}
-
 int
 check_ntsec(const char *filename)
 {
         return (pathconf(filename, _PC_POSIX_PERMISSIONS));
 }
 
-void
-register_9x_service(void)
-{
-        HINSTANCE kerneldll;
-        DWORD (*RegisterServiceProcess)(DWORD, DWORD);
-
-        /* The service register mechanism in 9x/Me is pretty different from
-         * NT/2K/XP.  In NT/2K/XP we're using a special service starter
-         * application to register and control sshd as service.  This method
-         * doesn't play nicely with 9x/Me.  For that reason we register here
-         * as service when running under 9x/Me.  This function is only called
-         * by the child sshd when it's going to daemonize.
-         */
-        if (is_winnt)
-                return;
-        if (!(kerneldll = LoadLibrary("KERNEL32.DLL")))
-                return;
-        if (!(RegisterServiceProcess = (DWORD (*)(DWORD, DWORD))
-                GetProcAddress(kerneldll, "RegisterServiceProcess")))
-                return;
-        RegisterServiceProcess(0, 1);
-}
-
 #define NL(x) x, (sizeof (x) - 1)
 #define WENV_SIZ (sizeof (wenv_arr) / sizeof (wenv_arr[0]))
 
diff --git a/openbsd-compat/bsd-cygwin_util.h b/openbsd-compat/bsd-cygwin_util.h
index 6719b8a49..39b8eb788 100644
--- a/openbsd-compat/bsd-cygwin_util.h
+++ b/openbsd-compat/bsd-cygwin_util.h
@@ -1,4 +1,4 @@
-/* $Id: bsd-cygwin_util.h,v 1.11 2004/08/30 10:42:08 dtucker Exp $ */
+/* $Id: bsd-cygwin_util.h,v 1.12 2009/03/08 00:40:28 dtucker Exp $ */
 
 /*
  * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com>
@@ -35,7 +35,6 @@
 #ifdef HAVE_CYGWIN
 
 #undef ERROR
-#define is_winnt       (GetVersion() < 0x80000000)
 
 #include <windows.h>
 #include <sys/cygwin.h>
@@ -43,9 +42,7 @@
 
 int binary_open(const char *, int , ...);
 int binary_pipe(int fd[2]);
-int check_nt_auth(int, struct passwd *);
 int check_ntsec(const char *);
-void register_9x_service(void);
 char **fetch_windows_environment(void);
 void free_windows_environment(char **);
 
diff --git a/openbsd-compat/daemon.c b/openbsd-compat/daemon.c
index e3a6886bd..3efe14c68 100644
--- a/openbsd-compat/daemon.c
+++ b/openbsd-compat/daemon.c
@@ -57,18 +57,8 @@ daemon(int nochdir, int noclose)
         case -1:
                 return (-1);
         case 0:
-#ifdef HAVE_CYGWIN
-                register_9x_service();
-#endif
                 break;
         default:
-#ifdef HAVE_CYGWIN
-                /*
-                 * This sleep avoids a race condition which kills the
-                 * child process if parent is started by a NT/W2K service.
-                 */
-                sleep(1);
-#endif
                 _exit(0);
         }
 
diff --git a/session.c b/session.c
index f2549e0cd..8e0c54faa 100644
--- a/session.c
+++ b/session.c
@@ -571,8 +571,7 @@ do_exec_no_pty(Session *s, const char *command)
         signal(WJSIGNAL, cray_job_termination_handler);
 #endif /* _UNICOS */
 #ifdef HAVE_CYGWIN
-        if (is_winnt)
-                cygwin_set_impersonation_token(INVALID_HANDLE_VALUE);
+        cygwin_set_impersonation_token(INVALID_HANDLE_VALUE);
 #endif
 
         s->pid = pid;
@@ -726,8 +725,7 @@ do_exec_pty(Session *s, const char *command)
         signal(WJSIGNAL, cray_job_termination_handler);
 #endif /* _UNICOS */
 #ifdef HAVE_CYGWIN
-        if (is_winnt)
-                cygwin_set_impersonation_token(INVALID_HANDLE_VALUE);
+        cygwin_set_impersonation_token(INVALID_HANDLE_VALUE);
 #endif
 
         s->pid = pid;
@@ -1116,7 +1114,7 @@ do_setup_env(Session *s, const char *shell)
         u_int i, envsize;
         char **env, *laddr;
         struct passwd *pw = s->pw;
-#ifndef HAVE_LOGIN_CAP
+#if !defined (HAVE_LOGIN_CAP) && !defined (HAVE_CYGWIN)
         char *path = NULL;
 #endif
 
@@ -1551,9 +1549,6 @@ do_setusercontext(struct passwd *pw)
 #endif
         }
 
-#ifdef HAVE_CYGWIN
-        if (is_winnt)
-#endif
         if (getuid() != pw->pw_uid || geteuid() != pw->pw_uid)
                 fatal("Failed to set uids to %u.", (u_int) pw->pw_uid);