1098 lines
26 KiB
C
1098 lines
26 KiB
C
/* filesystem.c
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* Filesystem utility routines
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <glib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#include <tchar.h>
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#include "epan/unicode-utils.h"
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#else
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#include <pwd.h>
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#endif
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#include "filesystem.h"
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#include <wiretap/file_util.h>
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/*
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* Given a pathname, return a pointer to the last pathname separator
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* character in the pathname, or NULL if the pathname contains no
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* separators.
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*/
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static char *
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find_last_pathname_separator(const char *path)
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{
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char *separator;
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#ifdef _WIN32
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char c;
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/*
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* We have to scan for '\' or '/'.
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* Get to the end of the string.
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*/
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separator = strchr(path, '\0'); /* points to ending '\0' */
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while (separator > path) {
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c = *--separator;
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if (c == '\\' || c == '/')
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return separator; /* found it */
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}
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/*
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* OK, we didn't find any, so no directories - but there might
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* be a drive letter....
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*/
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return strchr(path, ':');
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#else
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separator = strrchr(path, '/');
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#endif
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return separator;
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}
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/*
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* Given a pathname, return the last component.
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*/
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const char *
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get_basename(const char *path)
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{
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const char *filename;
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g_assert(path != NULL);
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filename = find_last_pathname_separator(path);
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if (filename == NULL) {
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/*
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* There're no directories, drive letters, etc. in the
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* name; the pathname *is* the file name.
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*/
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filename = path;
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} else {
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/*
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* Skip past the pathname or drive letter separator.
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*/
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filename++;
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}
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return filename;
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}
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/*
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* Given a pathname, return a string containing everything but the
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* last component. NOTE: this overwrites the pathname handed into
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* it....
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*/
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char *
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get_dirname(char *path)
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{
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char *separator;
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g_assert(path != NULL);
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separator = find_last_pathname_separator(path);
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if (separator == NULL) {
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/*
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* There're no directories, drive letters, etc. in the
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* name; there is no directory path to return.
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*/
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return NULL;
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}
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/*
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* Get rid of the last pathname separator and the final file
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* name following it.
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*/
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*separator = '\0';
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/*
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* "path" now contains the pathname of the directory containing
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* the file/directory to which it referred.
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*/
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return path;
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}
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/*
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* Given a pathname, return:
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*
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* the errno, if an attempt to "stat()" the file fails;
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*
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* EISDIR, if the attempt succeeded and the file turned out
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* to be a directory;
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*
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* 0, if the attempt succeeded and the file turned out not
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* to be a directory.
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*/
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/*
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* Visual C++ on Win32 systems doesn't define these. (Old UNIX systems don't
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* define them either.)
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*
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* Visual C++ on Win32 systems doesn't define S_IFIFO, it defines _S_IFIFO.
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*/
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#ifndef S_ISREG
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#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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#endif
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#ifndef S_IFIFO
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#define S_IFIFO _S_IFIFO
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#endif
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#ifndef S_ISFIFO
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#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
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#endif
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#ifndef S_ISDIR
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#endif
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int
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test_for_directory(const char *path)
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{
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struct stat statb;
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if (eth_stat(path, &statb) < 0)
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return errno;
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if (S_ISDIR(statb.st_mode))
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return EISDIR;
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else
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return 0;
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}
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int
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test_for_fifo(const char *path)
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{
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struct stat statb;
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if (eth_stat(path, &statb) < 0)
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return errno;
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if (S_ISFIFO(statb.st_mode))
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return ESPIPE;
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else
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return 0;
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}
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static char *progfile_dir;
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/*
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* Get the pathname of the directory from which the executable came,
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* and save it for future use. Returns NULL on success, and a
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* g_mallocated string containing an error on failure.
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*/
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char *
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init_progfile_dir(const char *arg0
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#ifdef _WIN32
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_U_
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#endif
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)
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{
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char *dir_end;
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char *path;
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#ifdef _WIN32
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TCHAR prog_pathname_w[_MAX_PATH+2];
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size_t progfile_dir_len;
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char *prog_pathname;
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DWORD error;
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TCHAR *msg_w;
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guchar *msg;
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size_t msglen;
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/*
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* Attempt to get the full pathname of the currently running
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* program.
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*/
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if (GetModuleFileName(NULL, prog_pathname_w, sizeof prog_pathname_w) != 0) {
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/*
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* XXX - Should we use g_utf16_to_utf8(), as in
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* getenv_utf8()?
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*/
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prog_pathname = utf_16to8(prog_pathname_w);
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/*
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* We got it; strip off the last component, which would be
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* the file name of the executable, giving us the pathname
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* of the directory where the executable resies
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*
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* First, find the last "\" in the directory, as that
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* marks the end of the directory pathname.
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*
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* XXX - Can the pathname be something such as
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* "C:wireshark.exe"? Or is it always a full pathname
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* beginning with "\" after the drive letter?
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*/
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dir_end = strrchr(prog_pathname, '\\');
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if (dir_end != NULL) {
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/*
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* Found it - now figure out how long the program
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* directory pathname will be.
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*/
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progfile_dir_len = (dir_end - prog_pathname);
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/*
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* Allocate a buffer for the program directory
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* pathname, and construct it.
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*/
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path = g_malloc(progfile_dir_len + 1);
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strncpy(path, prog_pathname, progfile_dir_len);
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path[progfile_dir_len] = '\0';
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progfile_dir = path;
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return NULL; /* we succeeded */
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} else {
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/*
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* OK, no \ - what do we do now?
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*/
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return g_strdup_printf("No \\ in executable pathname \"%s\"",
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prog_pathname);
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}
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} else {
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/*
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* Oh, well. Return an indication of the error.
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*/
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error = GetLastError();
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if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, error, 0, (LPTSTR) &msg_w, 0, NULL) == 0) {
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/*
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* Gak. We can't format the message.
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*/
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return g_strdup_printf("GetModuleFileName failed: %u (FormatMessage failed: %u)",
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error, GetLastError());
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}
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msg = utf_16to8(msg_w);
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LocalFree(msg_w);
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/*
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* "FormatMessage()" "helpfully" sticks CR/LF at the
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* end of the message. Get rid of it.
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*/
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msglen = strlen(msg);
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if (msglen >= 2) {
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msg[msglen - 1] = '\0';
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msg[msglen - 2] = '\0';
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}
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return g_strdup_printf("GetModuleFileName failed: %s (%u)",
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msg, error);
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}
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#else
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char *prog_pathname;
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char *curdir;
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long path_max;
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char *pathstr;
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char *path_start, *path_end;
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size_t path_component_len;
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char *retstr;
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/*
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* Try to figure out the directory in which the currently running
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* program resides, given the argv[0] it was started with. That
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* might be the absolute path of the program, or a path relative
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* to the current directory of the process that started it, or
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* just a name for the program if it was started from the command
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* line and was searched for in $PATH. It's not guaranteed to be
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* any of those, however, so there are no guarantees....
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*/
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if (arg0[0] == '/') {
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/*
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* It's an absolute path.
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*/
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prog_pathname = g_strdup(arg0);
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} else if (strchr(arg0, '/') != NULL) {
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/*
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* It's a relative path, with a directory in it.
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* Get the current directory, and combine it
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* with that directory.
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*/
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path_max = pathconf(".", _PC_PATH_MAX);
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if (path_max == -1) {
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/*
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* We have no idea how big a buffer to
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* allocate for the current directory.
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*/
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return g_strdup_printf("pathconf failed: %s\n",
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strerror(errno));
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}
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curdir = g_malloc(path_max);
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if (getcwd(curdir, path_max) == NULL) {
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/*
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* It failed - give up, and just stick
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* with DATAFILE_DIR.
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*/
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g_free(curdir);
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return g_strdup_printf("getcwd failed: %s\n",
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strerror(errno));
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}
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path = g_malloc(strlen(curdir) + 1 + strlen(arg0) + 1);
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strcpy(path, curdir);
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strcat(path, "/");
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strcat(path, arg0);
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g_free(curdir);
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prog_pathname = path;
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} else {
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/*
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* It's just a file name.
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* Search the path for a file with that name
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* that's executable.
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*/
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prog_pathname = NULL; /* haven't found it yet */
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pathstr = getenv("PATH");
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path_start = pathstr;
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if (path_start != NULL) {
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while (*path_start != '\0') {
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path_end = strchr(path_start, ':');
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if (path_end == NULL)
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path_end = path_start + strlen(path_start);
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path_component_len = path_end - path_start;
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path = g_malloc(path_component_len + 1
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+ strlen(arg0) + 1);
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memcpy(path, path_start, path_component_len);
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path[path_component_len] = '\0';
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strcat(path, "/");
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strcat(path, arg0);
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if (access(path, X_OK) == 0) {
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/*
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* Found it!
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*/
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prog_pathname = path;
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break;
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}
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/*
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* That's not it. If there are more
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* path components to test, try them.
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*/
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if (*path_end == '\0') {
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/*
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* There's nothing more to try.
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*/
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break;
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}
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if (*path_end == ':')
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path_end++;
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path_start = path_end;
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g_free(path);
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}
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if (prog_pathname == NULL) {
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/*
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* Program not found in path.
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*/
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return g_strdup_printf("\"%s\" not found in \"%s\"",
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arg0, pathstr);
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}
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} else {
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/*
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* PATH isn't set.
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* XXX - should we pick a default?
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*/
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return g_strdup("PATH isn't set");
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}
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}
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/*
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* OK, we have what we think is the pathname
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* of the program.
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*
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* First, find the last "/" in the directory,
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* as that marks the end of the directory pathname.
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*/
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dir_end = strrchr(prog_pathname, '/');
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if (dir_end != NULL) {
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/*
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* Found it. Strip off the last component,
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* as that's the path of the program.
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*/
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*dir_end = '\0';
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/*
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* Is there a "/.libs" at the end?
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*/
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dir_end = strrchr(prog_pathname, '/');
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if (dir_end != NULL) {
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if (strcmp(dir_end, "/.libs") == 0) {
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/*
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* Yup, it's ".libs".
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* Strip that off; it's an
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* artifact of libtool.
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*/
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*dir_end = '\0';
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}
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}
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|
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/*
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* OK, we have the path we want.
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*/
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progfile_dir = prog_pathname;
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return NULL;
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} else {
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/*
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* This "shouldn't happen"; we apparently
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* have no "/" in the pathname.
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* Just free up prog_pathname.
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*/
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retstr = g_strdup_printf("No / found in \"%s\"", prog_pathname);
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g_free(prog_pathname);
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return retstr;
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}
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#endif
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}
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|
|
/*
|
|
* Get the directory in which the program resides.
|
|
*/
|
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const char *
|
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get_progfile_dir(void)
|
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{
|
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return progfile_dir;
|
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}
|
|
|
|
/*
|
|
* Get the directory in which the global configuration and data files are
|
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* stored.
|
|
*
|
|
* XXX - if we ever make libwireshark a real library, used by multiple
|
|
* applications (more than just TShark and versions of Wireshark with
|
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* various UIs), should the configuration files belong to the library
|
|
* (and be shared by all those applications) or to the applications?
|
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*
|
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* If they belong to the library, that could be done on UNIX by the
|
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* configure script, but it's trickier on Windows, as you can't just
|
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* use the pathname of the executable.
|
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*
|
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* If they belong to the application, that could be done on Windows
|
|
* by using the pathname of the executable, but we'd have to have it
|
|
* passed in as an argument, in some call, on UNIX.
|
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*
|
|
* Note that some of those configuration files might be used by code in
|
|
* libwireshark, some of them might be used by dissectors (would they
|
|
* belong to libwireshark, the application, or a separate library?),
|
|
* and some of them might be used by other code (the Wireshark preferences
|
|
* file includes resolver preferences that control the behavior of code
|
|
* in libwireshark, dissector preferences, and UI preferences, for
|
|
* example).
|
|
*/
|
|
const char *
|
|
get_datafile_dir(void)
|
|
{
|
|
#ifdef _WIN32
|
|
char *u3deviceexecpath;
|
|
#endif
|
|
static char *datafile_dir = NULL;
|
|
|
|
if (datafile_dir != NULL)
|
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return datafile_dir;
|
|
|
|
#ifdef _WIN32
|
|
|
|
u3deviceexecpath = getenv_utf8("U3_DEVICE_EXEC_PATH");
|
|
|
|
if (u3deviceexecpath != NULL) {
|
|
datafile_dir = u3deviceexecpath;
|
|
} else {
|
|
/*
|
|
* Do we have the pathname of the program? If so, assume we're
|
|
* running an installed version of the program. If we fail,
|
|
* we don't change "datafile_dir", and thus end up using the
|
|
* default.
|
|
*
|
|
* XXX - does NSIS put the installation directory into
|
|
* "\HKEY_LOCAL_MACHINE\SOFTWARE\Wireshark\InstallDir"?
|
|
* If so, perhaps we should read that from the registry,
|
|
* instead.
|
|
*/
|
|
if (progfile_dir != NULL) {
|
|
/*
|
|
* Yes, we do; use that.
|
|
*/
|
|
datafile_dir = progfile_dir;
|
|
} else {
|
|
/*
|
|
* No, we don't.
|
|
* Fall back on the default installation directory.
|
|
*/
|
|
datafile_dir = "C:\\Program Files\\Wireshark\\";
|
|
}
|
|
}
|
|
#else
|
|
/*
|
|
* Just use DATAFILE_DIR, as that's what the configure script
|
|
* set it to be.
|
|
*/
|
|
datafile_dir = DATAFILE_DIR;
|
|
#endif
|
|
return datafile_dir;
|
|
}
|
|
|
|
/*
|
|
* Get the directory in which files that, at least on UNIX, are
|
|
* system files (such as "/etc/ethers") are stored; on Windows,
|
|
* there's no "/etc" directory, so we get them from the global
|
|
* configuration and data file directory.
|
|
*/
|
|
const char *
|
|
get_systemfile_dir(void)
|
|
{
|
|
#ifdef _WIN32
|
|
return get_datafile_dir();
|
|
#else
|
|
return "/etc";
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Name of directory, under the user's home directory, in which
|
|
* personal configuration files are stored.
|
|
*/
|
|
#ifdef _WIN32
|
|
#define PF_DIR "Wireshark"
|
|
#else
|
|
/*
|
|
* XXX - should this be ".libepan"? For backwards-compatibility, I'll keep
|
|
* it ".wireshark" for now.
|
|
*/
|
|
#define PF_DIR ".wireshark"
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
/* utf8 version of getenv, needed to get win32 filename paths */
|
|
char *getenv_utf8(const char *varname)
|
|
{
|
|
char *envvar;
|
|
wchar_t *envvarw;
|
|
wchar_t *varnamew;
|
|
|
|
envvar = getenv(varname);
|
|
|
|
/* since GLib 2.6 we need an utf8 version of the filename */
|
|
#if GLIB_MAJOR_VERSION > 2 || (GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION >= 6)
|
|
if (!G_WIN32_HAVE_WIDECHAR_API ()) {
|
|
/* Windows OT (9x, ME), convert from current code page to utf8 */
|
|
/* it's the best we can do here ... */
|
|
envvar = g_locale_to_utf8(envvar, -1, NULL, NULL, NULL);
|
|
/* XXX - memleak */
|
|
return envvar;
|
|
}
|
|
|
|
/* Windows NT, 2000, XP, ... */
|
|
/* using the wide char version of getenv should work under all circumstances */
|
|
|
|
/* convert given varname to utf16, needed by _wgetenv */
|
|
varnamew = g_utf8_to_utf16(varname, -1, NULL, NULL, NULL);
|
|
if (varnamew == NULL) {
|
|
return envvar;
|
|
}
|
|
|
|
/* use wide char version of getenv */
|
|
envvarw = _wgetenv(varnamew);
|
|
g_free(varnamew);
|
|
if (envvarw == NULL) {
|
|
return envvar;
|
|
}
|
|
|
|
/* convert value to utf8 */
|
|
envvar = g_utf16_to_utf8(envvarw, -1, NULL, NULL, NULL);
|
|
/* XXX - memleak */
|
|
#endif
|
|
|
|
return envvar;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Get the directory in which personal configuration files reside;
|
|
* in UNIX-compatible systems, it's ".wireshark", under the user's home
|
|
* directory, and on Windows systems, it's "Wireshark", under %APPDATA%
|
|
* or, if %APPDATA% isn't set, it's "%USERPROFILE%\Application Data"
|
|
* (which is what %APPDATA% normally is on Windows 2000).
|
|
*/
|
|
static const char *
|
|
get_persconffile_dir(void)
|
|
{
|
|
#ifdef _WIN32
|
|
char *appdatadir;
|
|
char *userprofiledir;
|
|
char *u3appdatapath;
|
|
#else
|
|
const char *homedir;
|
|
struct passwd *pwd;
|
|
#endif
|
|
static char *pf_dir = NULL;
|
|
|
|
/* Return the cached value, if available */
|
|
if (pf_dir != NULL)
|
|
return pf_dir;
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* See if we are running in a U3 environment.
|
|
*/
|
|
u3appdatapath = getenv_utf8("U3_APP_DATA_PATH");
|
|
if (u3appdatapath != NULL) {
|
|
/*
|
|
* We are; use the U3 application data path.
|
|
*/
|
|
pf_dir = u3appdatapath;
|
|
} else {
|
|
/*
|
|
* Use %APPDATA% or %USERPROFILE%, so that configuration
|
|
* files are stored in the user profile, rather than in
|
|
* the home directory. The Windows convention is to store
|
|
* configuration information in the user profile, and doing
|
|
* so means you can use Wireshark even if the home directory
|
|
* is an inaccessible network drive.
|
|
*/
|
|
appdatadir = getenv_utf8("APPDATA");
|
|
if (appdatadir != NULL) {
|
|
/*
|
|
* Concatenate %APPDATA% with "\Wireshark".
|
|
*/
|
|
pf_dir = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
|
|
appdatadir, PF_DIR);
|
|
} else {
|
|
/*
|
|
* OK, %APPDATA% wasn't set, so use
|
|
* %USERPROFILE%\Application Data.
|
|
*/
|
|
userprofiledir = getenv_utf8("USERPROFILE");
|
|
if (userprofiledir != NULL) {
|
|
pf_dir = g_strdup_printf(
|
|
"%s" G_DIR_SEPARATOR_S "Application Data" G_DIR_SEPARATOR_S "%s",
|
|
userprofiledir, PF_DIR);
|
|
} else {
|
|
/*
|
|
* Give up and use "C:".
|
|
*/
|
|
pf_dir = g_strdup_printf("C:" G_DIR_SEPARATOR_S "%s", PF_DIR);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
/*
|
|
* If $HOME is set, use that.
|
|
*/
|
|
homedir = getenv("HOME");
|
|
if (homedir == NULL) {
|
|
/*
|
|
* Get their home directory from the password file.
|
|
* If we can't even find a password file entry for them,
|
|
* use "/tmp".
|
|
*/
|
|
pwd = getpwuid(getuid());
|
|
if (pwd != NULL) {
|
|
/*
|
|
* This is cached, so we don't need to worry
|
|
* about allocating multiple ones of them.
|
|
*/
|
|
homedir = g_strdup(pwd->pw_dir);
|
|
} else
|
|
homedir = "/tmp";
|
|
}
|
|
pf_dir = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", homedir, PF_DIR);
|
|
#endif
|
|
|
|
return pf_dir;
|
|
}
|
|
|
|
/*
|
|
* Create the directory that holds personal configuration files, if
|
|
* necessary. If we attempted to create it, and failed, return -1 and
|
|
* set "*pf_dir_path_return" to the pathname of the directory we failed
|
|
* to create (it's g_mallocated, so our caller should free it); otherwise,
|
|
* return 0.
|
|
*/
|
|
int
|
|
create_persconffile_dir(char **pf_dir_path_return)
|
|
{
|
|
const char *pf_dir_path;
|
|
#ifdef _WIN32
|
|
char *pf_dir_path_copy, *pf_dir_parent_path;
|
|
size_t pf_dir_parent_path_len;
|
|
#endif
|
|
struct stat s_buf;
|
|
int ret;
|
|
|
|
pf_dir_path = get_persconffile_dir();
|
|
if (eth_stat(pf_dir_path, &s_buf) != 0 && errno == ENOENT) {
|
|
#ifdef _WIN32
|
|
/*
|
|
* Does the parent directory of that directory
|
|
* exist? %APPDATA% may not exist even though
|
|
* %USERPROFILE% does.
|
|
*
|
|
* We check for the existence of the directory
|
|
* by first checking whether the parent directory
|
|
* is just a drive letter and, if it's not, by
|
|
* doing a "stat()" on it. If it's a drive letter,
|
|
* or if the "stat()" succeeds, we assume it exists.
|
|
*/
|
|
pf_dir_path_copy = g_strdup(pf_dir_path);
|
|
pf_dir_parent_path = get_dirname(pf_dir_path_copy);
|
|
pf_dir_parent_path_len = strlen(pf_dir_parent_path);
|
|
if (pf_dir_parent_path_len > 0
|
|
&& pf_dir_parent_path[pf_dir_parent_path_len - 1] != ':'
|
|
&& eth_stat(pf_dir_parent_path, &s_buf) != 0) {
|
|
/*
|
|
* No, it doesn't exist - make it first.
|
|
*/
|
|
ret = eth_mkdir(pf_dir_parent_path, 0755);
|
|
if (ret == -1) {
|
|
*pf_dir_path_return = pf_dir_parent_path;
|
|
return -1;
|
|
}
|
|
}
|
|
g_free(pf_dir_path_copy);
|
|
ret = eth_mkdir(pf_dir_path, 0755);
|
|
#else
|
|
ret = eth_mkdir(pf_dir_path, 0755);
|
|
#endif
|
|
} else {
|
|
/*
|
|
* Something with that pathname exists; if it's not
|
|
* a directory, we'll get an error if we try to put
|
|
* something in it, so we don't fail here, we wait
|
|
* for that attempt fo fail.
|
|
*/
|
|
ret = 0;
|
|
}
|
|
if (ret == -1)
|
|
*pf_dir_path_return = g_strdup(pf_dir_path);
|
|
return ret;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* Returns the user's home directory on Win32.
|
|
*/
|
|
static const char *
|
|
get_home_dir(void)
|
|
{
|
|
static const char *home = NULL;
|
|
char *homedrive, *homepath;
|
|
char *homestring;
|
|
char *lastsep;
|
|
|
|
/* Return the cached value, if available */
|
|
if (home)
|
|
return home;
|
|
|
|
/*
|
|
* XXX - should we use USERPROFILE anywhere in this process?
|
|
* Is there a chance that it might be set but one or more of
|
|
* HOMEDRIVE or HOMEPATH isn't set?
|
|
*/
|
|
homedrive = getenv_utf8("HOMEDRIVE");
|
|
if (homedrive != NULL) {
|
|
homepath = getenv_utf8("HOMEPATH");
|
|
if (homepath != NULL) {
|
|
/*
|
|
* This is cached, so we don't need to worry about
|
|
* allocating multiple ones of them.
|
|
*/
|
|
homestring =
|
|
g_malloc(strlen(homedrive) + strlen(homepath) + 1);
|
|
strcpy(homestring, homedrive);
|
|
strcat(homestring, homepath);
|
|
|
|
/*
|
|
* Trim off any trailing slash or backslash.
|
|
*/
|
|
lastsep = find_last_pathname_separator(homestring);
|
|
if (lastsep != NULL && *(lastsep + 1) == '\0') {
|
|
/*
|
|
* Last separator is the last character
|
|
* in the string. Nuke it.
|
|
*/
|
|
*lastsep = '\0';
|
|
}
|
|
home = homestring;
|
|
} else
|
|
home = homedrive;
|
|
} else {
|
|
/*
|
|
* Give up and use C:.
|
|
*/
|
|
home = "C:";
|
|
}
|
|
|
|
return home;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Construct the path name of a personal configuration file, given the
|
|
* file name.
|
|
*
|
|
* On Win32, if "for_writing" is FALSE, we check whether the file exists
|
|
* and, if not, construct a path name relative to the ".wireshark"
|
|
* subdirectory of the user's home directory, and check whether that
|
|
* exists; if it does, we return that, so that configuration files
|
|
* from earlier versions can be read.
|
|
*/
|
|
char *
|
|
get_persconffile_path(const char *filename, gboolean for_writing
|
|
#ifndef _WIN32
|
|
_U_
|
|
#endif
|
|
)
|
|
{
|
|
char *path;
|
|
#ifdef _WIN32
|
|
struct stat s_buf;
|
|
char *old_path;
|
|
#endif
|
|
|
|
path = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", get_persconffile_dir(),
|
|
filename);
|
|
#ifdef _WIN32
|
|
if (!for_writing) {
|
|
if (eth_stat(path, &s_buf) != 0 && errno == ENOENT) {
|
|
/*
|
|
* OK, it's not in the personal configuration file
|
|
* directory; is it in the ".wireshark" subdirectory
|
|
* of their home directory?
|
|
*/
|
|
old_path = g_strdup_printf(
|
|
"%s" G_DIR_SEPARATOR_S ".wireshark" G_DIR_SEPARATOR_S "%s",
|
|
get_home_dir(), filename);
|
|
if (eth_stat(old_path, &s_buf) == 0) {
|
|
/*
|
|
* OK, it exists; return it instead.
|
|
*/
|
|
g_free(path);
|
|
path = old_path;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* Construct the path name of a global configuration file, given the
|
|
* file name.
|
|
*/
|
|
char *
|
|
get_datafile_path(const char *filename)
|
|
{
|
|
|
|
return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", get_datafile_dir(),
|
|
filename);
|
|
}
|
|
|
|
/* Delete a file */
|
|
gboolean
|
|
deletefile(const char *path)
|
|
{
|
|
return eth_unlink(path) == 0;
|
|
}
|
|
|
|
/*
|
|
* Construct and return the path name of a file in the
|
|
* appropriate temporary file directory.
|
|
*/
|
|
char *get_tempfile_path(const char *filename)
|
|
{
|
|
|
|
return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", g_get_tmp_dir(), filename);
|
|
}
|
|
|
|
/*
|
|
* Return an error message for UNIX-style errno indications on open or
|
|
* create operations.
|
|
*/
|
|
const char *
|
|
file_open_error_message(int err, gboolean for_writing)
|
|
{
|
|
const char *errmsg;
|
|
static char errmsg_errno[1024+1];
|
|
|
|
switch (err) {
|
|
|
|
case ENOENT:
|
|
if (for_writing)
|
|
errmsg = "The path to the file \"%s\" doesn't exist.";
|
|
else
|
|
errmsg = "The file \"%s\" doesn't exist.";
|
|
break;
|
|
|
|
case EACCES:
|
|
if (for_writing)
|
|
errmsg = "You don't have permission to create or write to the file \"%s\".";
|
|
else
|
|
errmsg = "You don't have permission to read the file \"%s\".";
|
|
break;
|
|
|
|
case EISDIR:
|
|
errmsg = "\"%s\" is a directory (folder), not a file.";
|
|
break;
|
|
|
|
case ENOSPC:
|
|
errmsg = "The file \"%s\" could not be created because there is no space left on the file system.";
|
|
break;
|
|
|
|
#ifdef EDQUOT
|
|
case EDQUOT:
|
|
errmsg = "The file \"%s\" could not be created because you are too close to, or over, your disk quota.";
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The file \"%%s\" could not be %s: %s.",
|
|
for_writing ? "created" : "opened",
|
|
strerror(err));
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
}
|
|
return errmsg;
|
|
}
|
|
|
|
/*
|
|
* Return an error message for UNIX-style errno indications on write
|
|
* operations.
|
|
*/
|
|
const char *
|
|
file_write_error_message(int err)
|
|
{
|
|
const char *errmsg;
|
|
static char errmsg_errno[1024+1];
|
|
|
|
switch (err) {
|
|
|
|
case ENOSPC:
|
|
errmsg = "The file \"%s\" could not be saved because there is no space left on the file system.";
|
|
break;
|
|
|
|
#ifdef EDQUOT
|
|
case EDQUOT:
|
|
errmsg = "The file \"%s\" could not be saved because you are too close to, or over, your disk quota.";
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"An error occurred while writing to the file \"%%s\": %s.",
|
|
strerror(err));
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
}
|
|
return errmsg;
|
|
}
|
|
|
|
|
|
gboolean
|
|
file_exists(const char *fname)
|
|
{
|
|
struct stat file_stat;
|
|
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* This is a bit tricky on win32. The st_ino field is documented as:
|
|
* "The inode, and therefore st_ino, has no meaning in the FAT, ..."
|
|
* but it *is* set to zero if stat() returns without an error,
|
|
* so this is working, but maybe not quite the way expected. ULFL
|
|
*/
|
|
file_stat.st_ino = 1; /* this will make things work if an error occured */
|
|
eth_stat(fname, &file_stat);
|
|
if (file_stat.st_ino == 0) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
#else
|
|
if (eth_stat(fname, &file_stat) != 0 && errno == ENOENT) {
|
|
return FALSE;
|
|
} else {
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
/*
|
|
* Check that the from file is not the same as to file
|
|
* We do it here so we catch all cases ...
|
|
* Unfortunately, the file requester gives us an absolute file
|
|
* name and the read file name may be relative (if supplied on
|
|
* the command line), so we can't just compare paths. From Joerg Mayer.
|
|
*/
|
|
gboolean
|
|
files_identical(const char *fname1, const char *fname2)
|
|
{
|
|
/* Two different implementations, because:
|
|
*
|
|
* - _fullpath is not available on UN*X, so we can't get full
|
|
* paths and compare them (which wouldn't work with hard links
|
|
* in any case);
|
|
*
|
|
* - st_ino isn't filled in with a meaningful value on Windows.
|
|
*/
|
|
#ifdef _WIN32
|
|
char full1[MAX_PATH], full2[MAX_PATH];
|
|
|
|
/*
|
|
* Get the absolute full paths of the file and compare them.
|
|
* That won't work if you have hard links, but those aren't
|
|
* much used on Windows, even though NTFS supports them.
|
|
*
|
|
* XXX - will _fullpath work with UNC?
|
|
*/
|
|
if( _fullpath( full1, fname1, MAX_PATH ) == NULL ) {
|
|
return FALSE;
|
|
}
|
|
|
|
if( _fullpath( full2, fname2, MAX_PATH ) == NULL ) {
|
|
return FALSE;
|
|
}
|
|
|
|
if(strcmp(full1, full2) == 0) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
#else
|
|
struct stat filestat1, filestat2;
|
|
|
|
/*
|
|
* Compare st_dev and st_ino.
|
|
*/
|
|
if (eth_stat(fname1, &filestat1) == -1)
|
|
return FALSE; /* can't get info about the first file */
|
|
if (eth_stat(fname2, &filestat2) == -1)
|
|
return FALSE; /* can't get info about the second file */
|
|
return (filestat1.st_dev == filestat2.st_dev &&
|
|
filestat1.st_ino == filestat2.st_ino);
|
|
#endif
|
|
}
|
|
|