/*
+ * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com>
*
- * cygwin_util.c
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
*
- * Author: Corinna Vinschen <vinschen@cygnus.com>
- *
- * Copyright (c) 2000 Corinna Vinschen <vinschen@cygnus.com>, Duisburg, Germany
- * All rights reserved
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Created: Sat Sep 02 12:17:00 2000 cv
*
#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"))
#if defined(open) && open == binary_open
# undef pipe
#endif
-int binary_open(const char *filename, int flags, ...)
+int
+binary_open(const char *filename, int flags, ...)
{
va_list ap;
mode_t mode;
va_start(ap, flags);
mode = va_arg(ap, mode_t);
va_end(ap);
- return open(filename, flags | O_BINARY, mode);
+ return (open(filename, flags | O_BINARY, mode));
}
-int binary_pipe(int fd[2])
+int
+binary_pipe(int fd[2])
{
int ret = pipe(fd);
if (!ret) {
- setmode (fd[0], O_BINARY);
- setmode (fd[1], O_BINARY);
+ setmode(fd[0], O_BINARY);
+ setmode(fd[1], O_BINARY);
}
- return ret;
+ return (ret);
}
-int check_nt_auth(int pwd_authenticated, uid_t uid)
+#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;
+ char *c;
+
+ 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
*/
static int has_create_token = -1;
+ if (pw == NULL)
+ return 0;
if (is_winnt) {
if (has_create_token < 0) {
- struct utsname uts;
- int major_high = 0, major_low = 0, minor = 0;
char *cygwin = getenv("CYGWIN");
has_create_token = 0;
- if (ntsec_on(cygwin) && !uname(&uts)) {
- sscanf(uts.release, "%d.%d.%d",
- &major_high, &major_low, &minor);
- if (major_high > 1 ||
- (major_high == 1 && (major_low > 3 ||
- (major_low == 3 && minor >= 2))))
- has_create_token = 1;
- }
+ 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() != uid)
- return 0;
+ !pwd_authenticated && geteuid() != pw->pw_uid)
+ return (0);
}
- return 1;
+ return (1);
}
-int check_ntsec(const char *filename)
+int
+check_ntsec(const char *filename)
{
char *cygwin;
- int allow_ntea = 0;
- int allow_ntsec = 0;
+ int allow_ntea = 0, allow_ntsec = 0;
struct statfs fsstat;
/* Windows 95/98/ME don't support file system security at all. */
if (!is_winnt)
- return 0;
+ return (0);
/* Evaluate current CYGWIN settings. */
cygwin = getenv("CYGWIN");
allow_ntea = ntea_on(cygwin);
- allow_ntsec = ntsec_on(cygwin);
+ allow_ntsec = ntsec_on(cygwin) ||
+ (has_capability(HAS_NTSEC_BY_DEFAULT) && !ntsec_off(cygwin));
/*
* `ntea' is an emulation of POSIX attributes. It doesn't support
* for security checks.
*/
if (allow_ntea)
- return 1;
+ return (1);
/*
* Retrieve file system flags. In Cygwin, file system flags are
* copied to f_type which has no meaning in Win32 itself.
*/
if (statfs(filename, &fsstat))
- return 1;
+ return (1);
/*
* Only file systems supporting ACLs are able to set permissions.
* ACLs to support POSIX permissions on files.
*/
if (fsstat.f_type & FS_PERSISTENT_ACLS)
- return allow_ntsec;
+ return (allow_ntsec);
- return 0;
+ return (0);
+}
+
+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);
}
#endif /* HAVE_CYGWIN */
andersk / gssapi-openssh.git / blobdiff