diff options
Diffstat (limited to 'crypto/openssh/openbsd-compat/realpath.c')
| -rw-r--r-- | crypto/openssh/openbsd-compat/realpath.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/crypto/openssh/openbsd-compat/realpath.c b/crypto/openssh/openbsd-compat/realpath.c deleted file mode 100644 index b6120d0..0000000 --- a/crypto/openssh/openbsd-compat/realpath.c +++ /dev/null @@ -1,197 +0,0 @@ -/* $OpenBSD: realpath.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */ -/* - * Copyright (c) 2003 Constantin S. Svintsoff <kostik@iclub.nsu.ru> - * - * 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. - * 3. The names of the authors may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. - */ - -/* OPENBSD ORIGINAL: lib/libc/stdlib/realpath.c */ - -#include "includes.h" - -#if !defined(HAVE_REALPATH) || defined(BROKEN_REALPATH) - -#include <sys/param.h> -#include <sys/stat.h> - -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -/* - * char *realpath(const char *path, char resolved[PATH_MAX]); - * - * Find the real name of path, by removing all ".", ".." and symlink - * components. Returns (resolved) on success, or (NULL) on failure, - * in which case the path which caused trouble is left in (resolved). - */ -char * -realpath(const char *path, char resolved[PATH_MAX]) -{ - struct stat sb; - char *p, *q, *s; - size_t left_len, resolved_len; - unsigned symlinks; - int serrno, slen; - char left[PATH_MAX], next_token[PATH_MAX], symlink[PATH_MAX]; - - serrno = errno; - symlinks = 0; - if (path[0] == '/') { - resolved[0] = '/'; - resolved[1] = '\0'; - if (path[1] == '\0') - return (resolved); - resolved_len = 1; - left_len = strlcpy(left, path + 1, sizeof(left)); - } else { - if (getcwd(resolved, PATH_MAX) == NULL) { - strlcpy(resolved, ".", PATH_MAX); - return (NULL); - } - resolved_len = strlen(resolved); - left_len = strlcpy(left, path, sizeof(left)); - } - if (left_len >= sizeof(left) || resolved_len >= PATH_MAX) { - errno = ENAMETOOLONG; - return (NULL); - } - - /* - * Iterate over path components in `left'. - */ - while (left_len != 0) { - /* - * Extract the next path component and adjust `left' - * and its length. - */ - p = strchr(left, '/'); - s = p ? p : left + left_len; - if (s - left >= sizeof(next_token)) { - errno = ENAMETOOLONG; - return (NULL); - } - memcpy(next_token, left, s - left); - next_token[s - left] = '\0'; - left_len -= s - left; - if (p != NULL) - memmove(left, s + 1, left_len + 1); - if (resolved[resolved_len - 1] != '/') { - if (resolved_len + 1 >= PATH_MAX) { - errno = ENAMETOOLONG; - return (NULL); - } - resolved[resolved_len++] = '/'; - resolved[resolved_len] = '\0'; - } - if (next_token[0] == '\0') - continue; - else if (strcmp(next_token, ".") == 0) - continue; - else if (strcmp(next_token, "..") == 0) { - /* - * Strip the last path component except when we have - * single "/" - */ - if (resolved_len > 1) { - resolved[resolved_len - 1] = '\0'; - q = strrchr(resolved, '/') + 1; - *q = '\0'; - resolved_len = q - resolved; - } - continue; - } - - /* - * Append the next path component and lstat() it. If - * lstat() fails we still can return successfully if - * there are no more path components left. - */ - resolved_len = strlcat(resolved, next_token, PATH_MAX); - if (resolved_len >= PATH_MAX) { - errno = ENAMETOOLONG; - return (NULL); - } - if (lstat(resolved, &sb) != 0) { - if (errno == ENOENT && p == NULL) { - errno = serrno; - return (resolved); - } - return (NULL); - } - if (S_ISLNK(sb.st_mode)) { - if (symlinks++ > MAXSYMLINKS) { - errno = ELOOP; - return (NULL); - } - slen = readlink(resolved, symlink, sizeof(symlink) - 1); - if (slen < 0) - return (NULL); - symlink[slen] = '\0'; - if (symlink[0] == '/') { - resolved[1] = 0; - resolved_len = 1; - } else if (resolved_len > 1) { - /* Strip the last path component. */ - resolved[resolved_len - 1] = '\0'; - q = strrchr(resolved, '/') + 1; - *q = '\0'; - resolved_len = q - resolved; - } - - /* - * If there are any path components left, then - * append them to symlink. The result is placed - * in `left'. - */ - if (p != NULL) { - if (symlink[slen - 1] != '/') { - if (slen + 1 >= sizeof(symlink)) { - errno = ENAMETOOLONG; - return (NULL); - } - symlink[slen] = '/'; - symlink[slen + 1] = 0; - } - left_len = strlcat(symlink, left, sizeof(left)); - if (left_len >= sizeof(left)) { - errno = ENAMETOOLONG; - return (NULL); - } - } - left_len = strlcpy(left, symlink, sizeof(left)); - } - } - - /* - * Remove trailing slash except when the resolved pathname - * is a single "/". - */ - if (resolved_len > 1 && resolved[resolved_len - 1] == '/') - resolved[resolved_len - 1] = '\0'; - return (resolved); -} -#endif /* !defined(HAVE_REALPATH) || defined(BROKEN_REALPATH) */ |
