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/* u3.c
* u3 2006 Graeme Lunt
*
* $Id: u3.c 37216 2011-05-17 22:18:32Z guy $
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Indentation logic: 2-space
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef _WIN32
#include <process.h> /* getpid */
#endif
#include <wsutil/file_util.h>
#include <epan/filesystem.h>
#include "u3.h"
#define U3_DEVICE_PATH_VAR "$U3_DEVICE_PATH"
static char *pid_file = NULL;
static char *u3devicepath = (char*)-1;
static gchar *newpath = NULL;
static char *u3_change_path(char *path, const char *old, const char *new);
gboolean u3_active(void)
{
return (
#ifdef _WIN32
getenv_utf8
#else
getenv
#endif
("U3_HOST_EXEC_PATH") != NULL);
}
void u3_runtime_info(GString *str)
{
char *u3devicepath_lcl = NULL;
char *u3deviceproduct = NULL;
if((u3deviceproduct =
#ifdef _WIN32
getenv_utf8
#else
getenv
#endif
("U3_DEVICE_PRODUCT")) != NULL) {
g_string_append(str, " from the ");
g_string_append(str, u3deviceproduct);
} else {
g_string_append(str, " from a ");
}
g_string_append(str, " U3 device");
if((u3devicepath_lcl =
#ifdef _WIN32
getenv_utf8
#else
getenv
#endif
("U3_DEVICE_PATH")) != NULL) {
g_string_append(str, " in drive ");
g_string_append(str, u3devicepath_lcl);
}
}
void u3_register_pid(void)
{
int pid;
int pid_fd;
char *u3hostexecpath;
int pf_size;
if((u3hostexecpath =
#ifdef _WIN32
getenv_utf8
#else
getenv
#endif
("U3_HOST_EXEC_PATH")) != NULL) {
pid = getpid();
pf_size = (int) strlen(u3hostexecpath) + 32;
pid_file = g_malloc(pf_size);
g_snprintf(pid_file, pf_size, "%s\\%d.pid", u3hostexecpath, pid);
pid_fd = ws_open(pid_file, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
if(pid_fd != -1)
ws_close(pid_fd);
else {
g_free(pid_file);
pid_file = NULL;
}
}
}
void u3_deregister_pid(void)
{
if(pid_file) {
/* we don't care if we succeed or fail - u3utils may have deleted the file */
ws_unlink(pid_file);
g_free(pid_file);
pid_file = NULL;
}
}
char *u3_expand_device_path(char *path)
{
return u3_change_path(path, U3_DEVICE_PATH_VAR, NULL);
}
char *u3_contract_device_path(char *path)
{
return u3_change_path(path, NULL, U3_DEVICE_PATH_VAR);
}
static char *u3_change_path(char *path, const char *old, const char *new)
{
if(u3devicepath == (char*)-1) {
/* cache the device path */
u3devicepath =
#ifdef _WIN32
getenv_utf8
#else
getenv
#endif
("U3_DEVICE_PATH");
}
if(new == NULL)
new = u3devicepath;
if(old == NULL)
old = u3devicepath;
if(newpath != NULL) {
g_free(newpath);
newpath = NULL;
}
if((path != NULL) && (u3devicepath != NULL) && (strncmp(path, old, strlen(old)) == 0)) {
newpath = g_strconcat(new, path + strlen(old), NULL);
return newpath;
}
return path;
}
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