tor

path.c (23799B)

---

/* Copyright (c) 2003, Roger Dingledine
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2021, The Tor Project, Inc. */
/* See LICENSE for licensing information */

/**
* \file path.c
*
* \brief Manipulate strings that contain filesystem paths.
**/

#include "lib/fs/path.h"
#include "lib/malloc/malloc.h"
#include "lib/log/log.h"
#include "lib/log/util_bug.h"
#include "lib/container/smartlist.h"
#include "lib/sandbox/sandbox.h"
#include "lib/string/printf.h"
#include "lib/string/util_string.h"
#include "lib/string/compat_ctype.h"
#include "lib/string/compat_string.h"
#include "lib/fs/files.h"
#include "lib/fs/dir.h"
#include "lib/fs/userdb.h"

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef _WIN32
#include <windows.h>
#include <shlwapi.h>
#else /* !(defined(_WIN32)) */
#include <dirent.h>
#include <glob.h>
#endif /* defined(_WIN32) */

#include <errno.h>
#include <string.h>

/** Removes enclosing quotes from <b>path</b> and unescapes quotes between the
* enclosing quotes. Backslashes are not unescaped. Return the unquoted
* <b>path</b> on success or 0 if <b>path</b> is not quoted correctly. */
char *
get_unquoted_path(const char *path)
{
 size_t len = strlen(path);

 if (len == 0) {
   return tor_strdup("");
 }

 int has_start_quote = (path[0] == '\"');
 int has_end_quote = (len > 0 && path[len-1] == '\"');
 if (has_start_quote != has_end_quote || (len == 1 && has_start_quote)) {
   return NULL;
 }

 char *unquoted_path = tor_malloc(len - has_start_quote - has_end_quote + 1);
 char *s = unquoted_path;
 size_t i;
 for (i = has_start_quote; i < len - has_end_quote; i++) {
   if (path[i] == '\"' && (i > 0 && path[i-1] == '\\')) {
     *(s-1) = path[i];
   } else if (path[i] != '\"') {
     *s++ = path[i];
   } else {  /* unescaped quote */
     tor_free(unquoted_path);
     return NULL;
   }
 }
 *s = '\0';
 return unquoted_path;
}

/** Expand any homedir prefix on <b>filename</b>; return a newly allocated
* string. */
char *
expand_filename(const char *filename)
{
 tor_assert(filename);
#ifdef _WIN32
 /* Might consider using GetFullPathName() as described here:
  * http://etutorials.org/Programming/secure+programming/
  *     Chapter+3.+Input+Validation/3.7+Validating+Filenames+and+Paths/
  */
 return tor_strdup(filename);
#else /* !defined(_WIN32) */
 if (*filename == '~') {
   char *home, *result=NULL;
   const char *rest;

   if (filename[1] == '/' || filename[1] == '\0') {
     home = getenv("HOME");
     if (!home) {
       log_warn(LD_CONFIG, "Couldn't find $HOME environment variable while "
                "expanding \"%s\"; defaulting to \"\".", filename);
       home = tor_strdup("");
     } else {
       home = tor_strdup(home);
     }
     rest = strlen(filename)>=2?(filename+2):"";
   } else {
#ifdef HAVE_PWD_H
     char *username;
     const char *slash;
     slash = strchr(filename, '/');
     if (slash)
       username = tor_strndup(filename+1,slash-filename-1);
     else
       username = tor_strdup(filename+1);
     if (!(home = get_user_homedir(username))) {
       log_warn(LD_CONFIG,"Couldn't get homedir for \"%s\"",username);
       tor_free(username);
       return NULL;
     }
     tor_free(username);
     rest = slash ? (slash+1) : "";
#else /* !defined(HAVE_PWD_H) */
     log_warn(LD_CONFIG, "Couldn't expand homedir on system without pwd.h");
     return tor_strdup(filename);
#endif /* defined(HAVE_PWD_H) */
   }
   tor_assert(home);
   /* Remove trailing slash. */
   if (strlen(home)>1 && !strcmpend(home,PATH_SEPARATOR)) {
     home[strlen(home)-1] = '\0';
   }
   tor_asprintf(&result,"%s"PATH_SEPARATOR"%s",home,rest);
   tor_free(home);
   return result;
 } else {
   return tor_strdup(filename);
 }
#endif /* defined(_WIN32) */
}

/** Return true iff <b>filename</b> is a relative path. */
int
path_is_relative(const char *filename)
{
 if (filename && filename[0] == '/')
   return 0;
#ifdef _WIN32
 else if (filename && filename[0] == '\\')
   return 0;
 else if (filename && strlen(filename)>3 && TOR_ISALPHA(filename[0]) &&
          filename[1] == ':' && filename[2] == '\\')
   return 0;
#endif /* defined(_WIN32) */
 else
   return 1;
}

/** Clean up <b>name</b> so that we can use it in a call to "stat".  On Unix,
* we do nothing.  On Windows, we remove a trailing slash, unless the path is
* the root of a disk. */
void
clean_fname_for_stat(char *name)
{
#ifdef _WIN32
 size_t len = strlen(name);
 if (!len)
   return;
 if (name[len-1]=='\\' || name[len-1]=='/') {
   if (len == 1 || (len==3 && name[1]==':'))
     return;
   name[len-1]='\0';
 }
#else /* !defined(_WIN32) */
 (void)name;
#endif /* defined(_WIN32) */
}

/** Modify <b>fname</b> to contain the name of its parent directory.  Doesn't
* actually examine the filesystem; does a purely syntactic modification.
*
* The parent of the root director is considered to be itself.
*
* Path separators are the forward slash (/) everywhere and additionally
* the backslash (\) on Win32.
*
* Cuts off any number of trailing path separators but otherwise ignores
* them for purposes of finding the parent directory.
*
* Returns 0 if a parent directory was successfully found, -1 otherwise (fname
* did not have any path separators or only had them at the end).
* */
int
get_parent_directory(char *fname)
{
 char *cp;
 int at_end = 1;
 tor_assert(fname);
#ifdef _WIN32
 /* If we start with, say, c:, then don't consider that the start of the path
  */
 if (fname[0] && fname[1] == ':') {
   fname += 2;
 }
#endif /* defined(_WIN32) */
 /* Now we want to remove all path-separators at the end of the string,
  * and to remove the end of the string starting with the path separator
  * before the last non-path-separator.  In perl, this would be
  *   s#[/]*$##; s#/[^/]*$##;
  * on a unixy platform.
  */
 cp = fname + strlen(fname);
 at_end = 1;
 while (--cp >= fname) {
   int is_sep = (*cp == '/'
#ifdef _WIN32
                 || *cp == '\\'
#endif
                 );
   if (is_sep) {
     if (cp == fname) {
       /* This is the first separator in the file name; don't remove it! */
       cp[1] = '\0';
       return 0;
     }
     *cp = '\0';
     if (! at_end)
       return 0;
   } else {
     at_end = 0;
   }
 }
 return -1;
}

#ifndef _WIN32
/** Return a newly allocated string containing the output of getcwd(). Return
* NULL on failure. (We can't just use getcwd() into a PATH_MAX buffer, since
* Hurd hasn't got a PATH_MAX.)
*/
static char *
alloc_getcwd(void)
{
#ifdef HAVE_GET_CURRENT_DIR_NAME
 /* Glibc makes this nice and simple for us. */
 char *cwd = get_current_dir_name();
 char *result = NULL;
 if (cwd) {
   /* We make a copy here, in case tor_malloc() is not malloc(). */
   result = tor_strdup(cwd);
   raw_free(cwd); // alias for free to avoid tripping check-spaces.
 }
 return result;
#else /* !defined(HAVE_GET_CURRENT_DIR_NAME) */
 size_t size = 1024;
 char *buf = NULL;
 char *ptr = NULL;

 while (ptr == NULL) {
   buf = tor_realloc(buf, size);
   ptr = getcwd(buf, size);

   if (ptr == NULL && errno != ERANGE) {
     tor_free(buf);
     return NULL;
   }

   size *= 2;
 }
 return buf;
#endif /* defined(HAVE_GET_CURRENT_DIR_NAME) */
}
#endif /* !defined(_WIN32) */

/** Expand possibly relative path <b>fname</b> to an absolute path.
* Return a newly allocated string, which may be a duplicate of <b>fname</b>.
*/
char *
make_path_absolute(const char *fname)
{
#ifdef _WIN32
 char *absfname_malloced = _fullpath(NULL, fname, 1);

 /* We don't want to assume that tor_free can free a string allocated
  * with malloc.  On failure, return fname (it's better than nothing). */
 char *absfname = tor_strdup(absfname_malloced ? absfname_malloced : fname);
 if (absfname_malloced) raw_free(absfname_malloced);

 return absfname;
#else /* !defined(_WIN32) */
 char *absfname = NULL, *path = NULL;

 tor_assert(fname);

 if (fname[0] == '/') {
   absfname = tor_strdup(fname);
 } else {
   path = alloc_getcwd();
   if (path) {
     tor_asprintf(&absfname, "%s/%s", path, fname);
     tor_free(path);
   } else {
     /* LCOV_EXCL_START Can't make getcwd fail. */
     /* If getcwd failed, the best we can do here is keep using the
      * relative path.  (Perhaps / isn't readable by this UID/GID.) */
     log_warn(LD_GENERAL, "Unable to find current working directory: %s",
              strerror(errno));
     absfname = tor_strdup(fname);
     /* LCOV_EXCL_STOP */
   }
 }
 return absfname;
#endif /* defined(_WIN32) */
}

/* The code below implements tor_glob and get_glob_opened_files. Because it is
* not easy to understand it by looking at individual functions, the big
* picture explanation here should be read first.
*
* Purpose of the functions:
* - tor_glob - receives a pattern and returns all the paths that result from
*   its glob expansion, globs can be present on all path components.
* - get_glob_opened_files - receives a pattern and returns all the paths that
*   are opened during its expansion (the paths before any path fragment that
*   contains a glob as they have to be opened to check for glob matches). This
*   is used to get the paths that have to be added to the seccomp sandbox
*   allowed list.
*
* Due to OS API differences explained below, the implementation of tor_glob is
* completely different for Windows and POSIX systems, so we ended up with
* three different implementations:
* - tor_glob for POSIX - as POSIX glob does everything we need, we simply call
*   it and process the results. This is completely implemented in tor_glob.
* - tor_glob for WIN32 - because the WIN32 API only supports expanding globs
*   in the last path fragment, we need to expand the globs in each path
*   fragment manually and call recursively to get the same behaviour as POSIX
*   glob. When there are no globs in pattern, we know we are on the last path
*   fragment and collect the full path.
* - get_glob_opened_files - because the paths before any path fragment with a
*   glob will be opened to check for matches, we need to collect them and we
*   need to expand the globs in each path fragments and call recursively until
*   we find no more globs.
*
* As seen from the description above, both tor_glob for WIN32 and
* get_glob_opened_files receive a pattern and return a list of paths and have
* to expand all path fragments that contain globs and call themselves
* recursively. The differences are:
* - get_glob_opened_files collects paths before path fragments with globs
*   while tor_glob for WIN32 collects full paths resulting from the expansion
*   of all globs.
* - get_glob_opened_files can call tor_glob to expand path fragments with
*   globs while tor_glob for WIN32 cannot because it IS tor_glob. For tor_glob
*   for WIN32, an auxiliary function has to be used for this purpose.
*
* To avoid code duplication, the logic of tor_glob for WIN32 and
* get_glob_opened_files is implemented in get_glob_paths. The differences are
* configured by the extra function parameters:
* - final - if true, returns a list of paths obtained from expanding pattern
*   (implements tor_glob). Otherwise, returns the paths before path fragments
*   with globs (implements get_glob_opened_files).
* - unglob - function used to expand a path fragment. The function signature
*   is defined by the unglob_fn typedef. Two implementations are available:
*   - unglob_win32 - uses tor_listdir and PathMatchSpec (for tor_glob WIN32)
*   - unglob_opened_files - uses tor_glob (for get_glob_opened_files)
*/

/** Returns true if the character at position <b>pos</b> in <b>pattern</b> is
* considered a glob. Returns false otherwise. Takes escaping into account on
* systems where escaping globs is supported. */
static inline bool
is_glob_char(const char *pattern, int pos)
{
 bool is_glob = pattern[pos] == '*' || pattern[pos] == '?';
#ifdef _WIN32
 return is_glob;
#else /* !defined(_WIN32) */
 bool is_escaped = pos > 0 && pattern[pos-1] == '\\';
 return is_glob && !is_escaped;
#endif /* defined(_WIN32) */
}

/** Expands the first path fragment of <b>pattern</b> that contains globs. The
* path fragment is between <b>prev_sep</b> and <b>next_sep</b>. If the path
* fragment is the last fragment of <b>pattern</b>, <b>next_sep</b> will be the
* index of the last char. Returns a list of paths resulting from the glob
* expansion of the path fragment. Anything after <b>next_sep</b> is not
* included in the returned list. Returns NULL on failure. */
typedef struct smartlist_t * unglob_fn(const char *pattern, int prev_sep,
                                      int next_sep);

/** Adds <b>path</b> to <b>result</b> if it exists and is a file type we can
* handle. Returns false if <b>path</b> is a file type we cannot handle,
* returns true otherwise. Used on tor_glob for WIN32. */
static bool
add_non_glob_path(const char *path, struct smartlist_t *result)
{
 file_status_t file_type = file_status(path);
 if (file_type == FN_ERROR) {
   return false;
 } else if (file_type != FN_NOENT) {
   char *to_add = tor_strdup(path);
   clean_fname_for_stat(to_add);
   smartlist_add(result, to_add);
 }
 /* If WIN32 tor_glob is called with a non-existing path, we want it to
  * return an empty list instead of error to match the regular version */
 return true;
}

/** Auxiliary function used by get_glob_opened_files and WIN32 tor_glob.
* Returns a list of paths obtained from <b>pattern</b> using <b>unglob</b> to
* expand each path fragment. If <b>final</b> is true, the paths are the result
* of the glob expansion of <b>pattern</b> (implements tor_glob). Otherwise,
* the paths are the paths opened by glob while expanding <b>pattern</b>
* (implements get_glob_opened_files). Returns NULL on failure. */
static struct smartlist_t *
get_glob_paths(const char *pattern, unglob_fn unglob, bool final)
{
 smartlist_t *result = smartlist_new();
 int i, prev_sep = -1, next_sep = -1;
 bool is_glob = false, error_found = false, is_sep = false, is_last = false;

 // find first path fragment with globs
 for (i = 0; pattern[i]; i++) {
   is_glob = is_glob || is_glob_char(pattern, i);
   is_last = !pattern[i+1];
   is_sep = pattern[i] == *PATH_SEPARATOR || pattern[i] == '/';
   if (is_sep || is_last) {
     prev_sep = next_sep;
     next_sep = i; // next_sep+1 is start of next fragment or end of string
     if (is_glob) {
       break;
     }
   }
 }

 if (!is_glob) { // pattern fully expanded or no glob in pattern
   if (final && !add_non_glob_path(pattern, result)) {
     error_found = true;
     goto end;
   }
   return result;
 }

 if (!final) {
   // add path before the glob to result
   int len = prev_sep < 1 ? prev_sep + 1 : prev_sep; // handle /*
   char *path_until_glob = tor_strndup(pattern, len);
   smartlist_add(result, path_until_glob);
 }

 smartlist_t *unglobbed_paths = unglob(pattern, prev_sep, next_sep);
 if (!unglobbed_paths) {
   error_found = true;
 } else {
   // for each path for current fragment, add the rest of the pattern
   // and call recursively to get all expanded paths
   SMARTLIST_FOREACH_BEGIN(unglobbed_paths, char *, current_path) {
     char *next_path;
     tor_asprintf(&next_path, "%s"PATH_SEPARATOR"%s", current_path,
                  &pattern[next_sep+1]);
     smartlist_t *opened_next = get_glob_paths(next_path, unglob, final);
     tor_free(next_path);
     if (!opened_next) {
       error_found = true;
       break;
     }
     smartlist_add_all(result, opened_next);
     smartlist_free(opened_next);
   } SMARTLIST_FOREACH_END(current_path);
   SMARTLIST_FOREACH(unglobbed_paths, char *, p, tor_free(p));
   smartlist_free(unglobbed_paths);
 }

end:
 if (error_found) {
   SMARTLIST_FOREACH(result, char *, p, tor_free(p));
   smartlist_free(result);
   result = NULL;
 }
 return result;
}

#ifdef _WIN32
/** Expands globs in <b>pattern</b> for the path fragment between
* <b>prev_sep</b> and <b>next_sep</b> using the WIN32 API. Returns NULL on
* failure. Used by the WIN32 implementation of tor_glob. Implements unglob_fn,
* see its description for more details. */
static struct smartlist_t *
unglob_win32(const char *pattern, int prev_sep, int next_sep)
{
 smartlist_t *result = smartlist_new();
 int len = prev_sep < 1 ? prev_sep + 1 : prev_sep; // handle /*
 char *path_until_glob = tor_strndup(pattern, len);

 if (!is_file(file_status(path_until_glob))) {
   smartlist_t *filenames = tor_listdir(path_until_glob);
   if (!filenames) {
     smartlist_free(result);
     result = NULL;
   } else {
     SMARTLIST_FOREACH_BEGIN(filenames, char *, filename) {
       TCHAR tpattern[MAX_PATH] = {0};
       TCHAR tfile[MAX_PATH] = {0};
       char *full_path;
       tor_asprintf(&full_path, "%s"PATH_SEPARATOR"%s",
                    path_until_glob, filename);
       char *path_curr_glob = tor_strndup(pattern, next_sep + 1);
       // *\ must return only dirs, remove \ from the pattern so it matches
       if (is_dir(file_status(full_path))) {
         clean_fname_for_stat(path_curr_glob);
       }
#ifdef UNICODE
       mbstowcs(tpattern, path_curr_glob, MAX_PATH);
       mbstowcs(tfile, full_path, MAX_PATH);
#else /* !defined(UNICODE) */
       strlcpy(tpattern, path_curr_glob, MAX_PATH);
       strlcpy(tfile, full_path, MAX_PATH);
#endif /* defined(UNICODE) */
       if (PathMatchSpec(tfile, tpattern)) {
         smartlist_add(result, full_path);
       } else {
         tor_free(full_path);
       }
       tor_free(path_curr_glob);
     } SMARTLIST_FOREACH_END(filename);
     SMARTLIST_FOREACH(filenames, char *, p, tor_free(p));
     smartlist_free(filenames);
   }
 }
 tor_free(path_until_glob);
 return result;
}
#elif HAVE_GLOB
#ifdef GLOB_ALTDIRFUNC  // prevent warning about unused functions
/** Same as opendir but calls sandbox_intern_string before */
static DIR *
prot_opendir(const char *name)
{
 if (sandbox_interned_string_is_missing(name)) {
   errno = EPERM;
   return NULL;
 }
 return opendir(sandbox_intern_string(name));
}

/** Same as stat but calls sandbox_intern_string before */
static int
prot_stat(const char *pathname, struct stat *buf)
{
 if (sandbox_interned_string_is_missing(pathname)) {
   errno = EPERM;
   return -1;
 }
 return stat(sandbox_intern_string(pathname), buf);
}

/** Same as lstat but calls sandbox_intern_string before */
static int
prot_lstat(const char *pathname, struct stat *buf)
{
 if (sandbox_interned_string_is_missing(pathname)) {
   errno = EPERM;
   return -1;
 }
 return lstat(sandbox_intern_string(pathname), buf);
}
/** As closedir, but has the right type for gl_closedir */
static void
wrap_closedir(void *arg)
{
 closedir(arg);
}
#endif /* defined(GLOB_ALTDIRFUNC) */

/** Function passed to glob to handle processing errors. <b>epath</b> is the
* path that caused the error and <b>eerrno</b> is the errno set by the
* function that failed. We want to ignore ENOENT and ENOTDIR because, in BSD
* systems, these are not ignored automatically, which makes glob fail when
* globs expand to non-existing paths and GLOB_ERR is set.
*/
static int
glob_errfunc(const char *epath, int eerrno)
{
   (void)epath;
   return eerrno == ENOENT || eerrno == ENOTDIR ? 0 : -1;
}
#endif /* defined(HAVE_GLOB) */

/** Return a new list containing the paths that match the pattern
* <b>pattern</b>. Return NULL on error. On POSIX systems, errno is set by the
* glob function or is set to EPERM if glob tried to access a file not allowed
* by the seccomp sandbox.
*/
struct smartlist_t *
tor_glob(const char *pattern)
{
 smartlist_t *result = NULL;

#ifdef _WIN32
 // PathMatchSpec does not support forward slashes, change them to backslashes
 char *pattern_normalized = tor_strdup(pattern);
 tor_strreplacechar(pattern_normalized, '/', *PATH_SEPARATOR);
 result = get_glob_paths(pattern_normalized, unglob_win32, true);
 tor_free(pattern_normalized);
#elif HAVE_GLOB /* !(defined(_WIN32)) */
 glob_t matches;
 int flags = GLOB_NOSORT;
#ifdef GLOB_ALTDIRFUNC
 /* use functions that call sandbox_intern_string */
 flags |= GLOB_ALTDIRFUNC;
 typedef void *(*gl_opendir)(const char * name);
 typedef struct dirent *(*gl_readdir)(void *);
 typedef void (*gl_closedir)(void *);
 matches.gl_opendir = (gl_opendir) &prot_opendir;
 matches.gl_readdir = (gl_readdir) &readdir;
 matches.gl_closedir = (gl_closedir) &wrap_closedir;
 matches.gl_stat = &prot_stat;
 matches.gl_lstat = &prot_lstat;
#endif /* defined(GLOB_ALTDIRFUNC) */
 // use custom error handler to workaround BSD quirks and do not set GLOB_ERR
 // because it would make glob fail on error even if the error handler ignores
 // the error
 int ret = glob(pattern, flags, glob_errfunc, &matches);
 if (ret == GLOB_NOMATCH) {
   return smartlist_new();
 } else if (ret != 0) {
   return NULL;
 }

 // #40141, !249: workaround for glibc bug where patterns ending in path
 // separator match files and folders instead of folders only.
 // this could be in #ifdef __GLIBC__ but: 1. it might affect other libcs too,
 // and 2. it doesn't cost much to stat each match again since libc is already
 // supposed to do it (otherwise the file may be on slow NFS or something)
 size_t pattern_len = strlen(pattern);
 bool dir_only = pattern_len > 0 && pattern[pattern_len-1] == *PATH_SEPARATOR;

 result = smartlist_new();
 size_t i;
 for (i = 0; i < matches.gl_pathc; i++) {
   char *match = tor_strdup(matches.gl_pathv[i]);
   size_t len = strlen(match);
   if (len > 0 && match[len-1] == *PATH_SEPARATOR) {
     match[len-1] = '\0';
   }

   if (!dir_only || (dir_only && is_dir(file_status(match)))) {
     smartlist_add(result, match);
   } else {
     tor_free(match);
   }
 }
 globfree(&matches);
#else
 (void)pattern;
 return result;
#endif /* defined(_WIN32) || ... */

 return result;
}

/** Returns true if <b>s</b> contains characters that can be globbed.
* Returns false otherwise. */
bool
has_glob(const char *s)
{
 int i;
 for (i = 0; s[i]; i++) {
   if (is_glob_char(s, i)) {
     return true;
   }
 }
 return false;
}

/** Expands globs in <b>pattern</b> for the path fragment between
* <b>prev_sep</b> and <b>next_sep</b> using tor_glob. Returns NULL on
* failure. Used by get_glob_opened_files. Implements unglob_fn, see its
* description for more details. */
static struct smartlist_t *
unglob_opened_files(const char *pattern, int prev_sep, int next_sep)
{
 (void)prev_sep;
 smartlist_t *result = smartlist_new();
 // if the following fragments have no globs, we're done
 if (has_glob(&pattern[next_sep+1])) {
   // if there is a glob after next_sep, we know next_sep is a separator and
   // not the last char and glob_path will have the path without the separator
   char *glob_path = tor_strndup(pattern, next_sep);
   smartlist_t *child_paths = tor_glob(glob_path);
   tor_free(glob_path);
   if (!child_paths) {
     smartlist_free(result);
     result = NULL;
   } else {
     smartlist_add_all(result, child_paths);
     smartlist_free(child_paths);
   }
 }
 return result;
}

/** Returns a list of files that are opened by the tor_glob function when
* called with <b>pattern</b>. Returns NULL on error. The purpose of this
* function is to create a list of files to be added to the sandbox white list
* before the sandbox is enabled. */
struct smartlist_t *
get_glob_opened_files(const char *pattern)
{
 return get_glob_paths(pattern, unglob_opened_files, false);
}