diff options
Diffstat (limited to 'crypto/openssh/openbsd-compat/bsd-cygwin_util.c')
| -rw-r--r-- | crypto/openssh/openbsd-compat/bsd-cygwin_util.c | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/crypto/openssh/openbsd-compat/bsd-cygwin_util.c b/crypto/openssh/openbsd-compat/bsd-cygwin_util.c deleted file mode 100644 index dbf8176..0000000 --- a/crypto/openssh/openbsd-compat/bsd-cygwin_util.c +++ /dev/null @@ -1,293 +0,0 @@ -/* - * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com> - * - * 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. - * - * 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 - * - * This file contains functions for forcing opened file descriptors to - * binary mode on Windows systems. - */ - -#include "includes.h" - -#ifdef HAVE_CYGWIN - -#if defined(open) && open == binary_open -# undef open -#endif -#if defined(pipe) && open == binary_pipe -# undef pipe -#endif - -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/utsname.h> -#include <sys/vfs.h> - -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> -#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, ...) -{ - 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)); -} - -int -binary_pipe(int fd[2]) -{ - int ret = pipe(fd); - - if (!ret) { - setmode(fd[0], O_BINARY); - setmode(fd[1], O_BINARY); - } - 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) -{ - char *cygwin; - 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); - - /* Evaluate current CYGWIN settings. */ - cygwin = getenv("CYGWIN"); - allow_ntea = ntea_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 - * real file level security as ntsec on NTFS file systems does - * but it supports FAT filesystems. `ntea' is minimum requirement - * for security checks. - */ - if (allow_ntea) - 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); - - /* - * Only file systems supporting ACLs are able to set permissions. - * `ntsec' is the setting in Cygwin which switches using of NTFS - * ACLs to support POSIX permissions on files. - */ - if (fsstat.f_type & FS_PERSISTENT_ACLS) - return (allow_ntsec); - - 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); -} - -#define NL(x) x, (sizeof (x) - 1) -#define WENV_SIZ (sizeof (wenv_arr) / sizeof (wenv_arr[0])) - -static struct wenv { - const char *name; - size_t namelen; -} wenv_arr[] = { - { NL("ALLUSERSPROFILE=") }, - { NL("COMMONPROGRAMFILES=") }, - { NL("COMPUTERNAME=") }, - { NL("COMSPEC=") }, - { NL("CYGWIN=") }, - { NL("NUMBER_OF_PROCESSORS=") }, - { NL("OS=") }, - { NL("PATH=") }, - { NL("PATHEXT=") }, - { NL("PROCESSOR_ARCHITECTURE=") }, - { NL("PROCESSOR_IDENTIFIER=") }, - { NL("PROCESSOR_LEVEL=") }, - { NL("PROCESSOR_REVISION=") }, - { NL("PROGRAMFILES=") }, - { NL("SYSTEMDRIVE=") }, - { NL("SYSTEMROOT=") }, - { NL("TMP=") }, - { NL("TEMP=") }, - { NL("WINDIR=") } -}; - -char ** -fetch_windows_environment(void) -{ - char **e, **p; - unsigned int i, idx = 0; - - p = xcalloc(WENV_SIZ + 1, sizeof(char *)); - for (e = environ; *e != NULL; ++e) { - for (i = 0; i < WENV_SIZ; ++i) { - if (!strncmp(*e, wenv_arr[i].name, wenv_arr[i].namelen)) - p[idx++] = *e; - } - } - p[idx] = NULL; - return p; -} - -void -free_windows_environment(char **p) -{ - xfree(p); -} - -#endif /* HAVE_CYGWIN */ |
