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-rw-r--r--openbsd-compat/bsd-cygwin_util.c269
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diff --git a/openbsd-compat/bsd-cygwin_util.c b/openbsd-compat/bsd-cygwin_util.c
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+++ b/openbsd-compat/bsd-cygwin_util.c
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+/*
+ * Copyright (c) 2000, 2001, 2011, 2013 Corinna Vinschen <vinschen@redhat.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.
+ */
+
+#define NO_BINARY_OPEN /* Avoid redefining open to binary_open for this file */
+#include "includes.h"
+
+#ifdef HAVE_CYGWIN
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include "xmalloc.h"
+
+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
+check_ntsec(const char *filename)
+{
+ return (pathconf(filename, _PC_POSIX_PERMISSIONS));
+}
+
+const char *
+cygwin_ssh_privsep_user()
+{
+ static char cyg_privsep_user[DNLEN + UNLEN + 2];
+
+ if (!cyg_privsep_user[0])
+ {
+#ifdef CW_CYGNAME_FROM_WINNAME
+ if (cygwin_internal (CW_CYGNAME_FROM_WINNAME, "sshd", cyg_privsep_user,
+ sizeof cyg_privsep_user) != 0)
+#endif
+ strlcpy(cyg_privsep_user, "sshd", sizeof(cyg_privsep_user));
+ }
+ return cyg_privsep_user;
+}
+
+#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("COMPUTERNAME=") },
+ { NL("COMSPEC=") },
+ { NL("CYGWIN=") },
+ { NL("OS=") },
+ { NL("PATH=") },
+ { NL("PATHEXT=") },
+ { NL("PROGRAMFILES=") },
+ { NL("SYSTEMDRIVE=") },
+ { NL("SYSTEMROOT=") },
+ { 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)
+{
+ free(p);
+}
+
+/*
+ * Returns true if the given string matches the pattern (which may contain ?
+ * and * as wildcards), and zero if it does not match.
+ *
+ * The Cygwin version of this function must be case-insensitive and take
+ * Unicode characters into account.
+ */
+
+static int
+__match_pattern (const wchar_t *s, const wchar_t *pattern)
+{
+ for (;;) {
+ /* If at end of pattern, accept if also at end of string. */
+ if (!*pattern)
+ return !*s;
+
+ if (*pattern == '*') {
+ /* Skip the asterisk. */
+ pattern++;
+
+ /* If at end of pattern, accept immediately. */
+ if (!*pattern)
+ return 1;
+
+ /* If next character in pattern is known, optimize. */
+ if (*pattern != '?' && *pattern != '*') {
+ /*
+ * Look instances of the next character in
+ * pattern, and try to match starting from
+ * those.
+ */
+ for (; *s; s++)
+ if (*s == *pattern &&
+ __match_pattern(s + 1, pattern + 1))
+ return 1;
+ /* Failed. */
+ return 0;
+ }
+ /*
+ * Move ahead one character at a time and try to
+ * match at each position.
+ */
+ for (; *s; s++)
+ if (__match_pattern(s, pattern))
+ return 1;
+ /* Failed. */
+ return 0;
+ }
+ /*
+ * There must be at least one more character in the string.
+ * If we are at the end, fail.
+ */
+ if (!*s)
+ return 0;
+
+ /* Check if the next character of the string is acceptable. */
+ if (*pattern != '?' && towlower(*pattern) != towlower(*s))
+ return 0;
+
+ /* Move to the next character, both in string and in pattern. */
+ s++;
+ pattern++;
+ }
+ /* NOTREACHED */
+}
+
+static int
+_match_pattern(const char *s, const char *pattern)
+{
+ wchar_t *ws;
+ wchar_t *wpattern;
+ size_t len;
+ int ret;
+
+ if ((len = mbstowcs(NULL, s, 0)) == (size_t) -1)
+ return 0;
+ ws = (wchar_t *) xcalloc(len + 1, sizeof (wchar_t));
+ mbstowcs(ws, s, len + 1);
+ if ((len = mbstowcs(NULL, pattern, 0)) == (size_t) -1)
+ return 0;
+ wpattern = (wchar_t *) xcalloc(len + 1, sizeof (wchar_t));
+ mbstowcs(wpattern, pattern, len + 1);
+ ret = __match_pattern (ws, wpattern);
+ free(ws);
+ free(wpattern);
+ return ret;
+}
+
+/*
+ * Tries to match the string against the
+ * comma-separated sequence of subpatterns (each possibly preceded by ! to
+ * indicate negation). Returns -1 if negation matches, 1 if there is
+ * a positive match, 0 if there is no match at all.
+ */
+int
+cygwin_ug_match_pattern_list(const char *string, const char *pattern)
+{
+ char sub[1024];
+ int negated;
+ int got_positive;
+ u_int i, subi, len = strlen(pattern);
+
+ got_positive = 0;
+ for (i = 0; i < len;) {
+ /* Check if the subpattern is negated. */
+ if (pattern[i] == '!') {
+ negated = 1;
+ i++;
+ } else
+ negated = 0;
+
+ /*
+ * Extract the subpattern up to a comma or end. Convert the
+ * subpattern to lowercase.
+ */
+ for (subi = 0;
+ i < len && subi < sizeof(sub) - 1 && pattern[i] != ',';
+ subi++, i++)
+ sub[subi] = pattern[i];
+ /* If subpattern too long, return failure (no match). */
+ if (subi >= sizeof(sub) - 1)
+ return 0;
+
+ /* If the subpattern was terminated by a comma, then skip it. */
+ if (i < len && pattern[i] == ',')
+ i++;
+
+ /* Null-terminate the subpattern. */
+ sub[subi] = '\0';
+
+ /* Try to match the subpattern against the string. */
+ if (_match_pattern(string, sub)) {
+ if (negated)
+ return -1; /* Negative */
+ else
+ got_positive = 1; /* Positive */
+ }
+ }
+
+ /*
+ * Return success if got a positive match. If there was a negative
+ * match, we have already returned -1 and never get here.
+ */
+ return got_positive;
+}
+
+#endif /* HAVE_CYGWIN */