NetBSD-5.0.2/dist/wpa/src/utils/wpa_debug.c
/*
* wpa_supplicant/hostapd / Debug prints
* Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include "common.h"
#ifdef CONFIG_DEBUG_FILE
static FILE *out_file = NULL;
#endif /* CONFIG_DEBUG_FILE */
int wpa_debug_level = MSG_INFO;
int wpa_debug_show_keys = 0;
int wpa_debug_timestamp = 0;
#ifndef CONFIG_NO_STDOUT_DEBUG
void wpa_debug_print_timestamp(void)
{
struct os_time tv;
if (!wpa_debug_timestamp)
return;
os_get_time(&tv);
#ifdef CONFIG_DEBUG_FILE
if (out_file) {
fprintf(out_file, "%ld.%06u: ", (long) tv.sec,
(unsigned int) tv.usec);
} else
#endif /* CONFIG_DEBUG_FILE */
printf("%ld.%06u: ", (long) tv.sec, (unsigned int) tv.usec);
}
/**
* wpa_printf - conditional printf
* @level: priority level (MSG_*) of the message
* @fmt: printf format string, followed by optional arguments
*
* This function is used to print conditional debugging and error messages. The
* output may be directed to stdout, stderr, and/or syslog based on
* configuration.
*
* Note: New line '\n' is added to the end of the text when printing to stdout.
*/
void wpa_printf(int level, char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (level >= wpa_debug_level) {
wpa_debug_print_timestamp();
#ifdef CONFIG_DEBUG_FILE
if (out_file) {
vfprintf(out_file, fmt, ap);
fprintf(out_file, "\n");
} else {
#endif /* CONFIG_DEBUG_FILE */
vprintf(fmt, ap);
printf("\n");
#ifdef CONFIG_DEBUG_FILE
}
#endif /* CONFIG_DEBUG_FILE */
}
va_end(ap);
}
static void _wpa_hexdump(int level, const char *title, const u8 *buf,
size_t len, int show)
{
size_t i;
if (level < wpa_debug_level)
return;
wpa_debug_print_timestamp();
#ifdef CONFIG_DEBUG_FILE
if (out_file) {
fprintf(out_file, "%s - hexdump(len=%lu):",
title, (unsigned long) len);
if (buf == NULL) {
fprintf(out_file, " [NULL]");
} else if (show) {
for (i = 0; i < len; i++)
fprintf(out_file, " %02x", buf[i]);
} else {
fprintf(out_file, " [REMOVED]");
}
fprintf(out_file, "\n");
} else {
#endif /* CONFIG_DEBUG_FILE */
printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
if (buf == NULL) {
printf(" [NULL]");
} else if (show) {
for (i = 0; i < len; i++)
printf(" %02x", buf[i]);
} else {
printf(" [REMOVED]");
}
printf("\n");
#ifdef CONFIG_DEBUG_FILE
}
#endif /* CONFIG_DEBUG_FILE */
}
void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len)
{
_wpa_hexdump(level, title, buf, len, 1);
}
void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len)
{
_wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
}
static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
size_t len, int show)
{
size_t i, llen;
const u8 *pos = buf;
const size_t line_len = 16;
if (level < wpa_debug_level)
return;
wpa_debug_print_timestamp();
#ifdef CONFIG_DEBUG_FILE
if (out_file) {
if (!show) {
fprintf(out_file,
"%s - hexdump_ascii(len=%lu): [REMOVED]\n",
title, (unsigned long) len);
return;
}
if (buf == NULL) {
fprintf(out_file,
"%s - hexdump_ascii(len=%lu): [NULL]\n",
title, (unsigned long) len);
return;
}
fprintf(out_file, "%s - hexdump_ascii(len=%lu):\n",
title, (unsigned long) len);
while (len) {
llen = len > line_len ? line_len : len;
fprintf(out_file, " ");
for (i = 0; i < llen; i++)
fprintf(out_file, " %02x", pos[i]);
for (i = llen; i < line_len; i++)
fprintf(out_file, " ");
fprintf(out_file, " ");
for (i = 0; i < llen; i++) {
if (isprint(pos[i]))
fprintf(out_file, "%c", pos[i]);
else
fprintf(out_file, "_");
}
for (i = llen; i < line_len; i++)
fprintf(out_file, " ");
fprintf(out_file, "\n");
pos += llen;
len -= llen;
}
} else {
#endif /* CONFIG_DEBUG_FILE */
if (!show) {
printf("%s - hexdump_ascii(len=%lu): [REMOVED]\n",
title, (unsigned long) len);
return;
}
if (buf == NULL) {
printf("%s - hexdump_ascii(len=%lu): [NULL]\n",
title, (unsigned long) len);
return;
}
printf("%s - hexdump_ascii(len=%lu):\n", title, (unsigned long) len);
while (len) {
llen = len > line_len ? line_len : len;
printf(" ");
for (i = 0; i < llen; i++)
printf(" %02x", pos[i]);
for (i = llen; i < line_len; i++)
printf(" ");
printf(" ");
for (i = 0; i < llen; i++) {
if (isprint(pos[i]))
printf("%c", pos[i]);
else
printf("_");
}
for (i = llen; i < line_len; i++)
printf(" ");
printf("\n");
pos += llen;
len -= llen;
}
#ifdef CONFIG_DEBUG_FILE
}
#endif /* CONFIG_DEBUG_FILE */
}
void wpa_hexdump_ascii(int level, const char *title, const u8 *buf, size_t len)
{
_wpa_hexdump_ascii(level, title, buf, len, 1);
}
void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
size_t len)
{
_wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
}
int wpa_debug_open_file(const char *path)
{
#ifdef CONFIG_DEBUG_FILE
if (!path)
return 0;
out_file = fopen(path, "a");
if (out_file == NULL) {
wpa_printf(MSG_ERROR, "wpa_debug_open_file: Failed to open "
"output file, using standard output");
return -1;
}
#ifndef _WIN32
setvbuf(out_file, NULL, _IOLBF, 0);
#endif /* _WIN32 */
#endif /* CONFIG_DEBUG_FILE */
return 0;
}
void wpa_debug_close_file(void)
{
#ifdef CONFIG_DEBUG_FILE
if (!out_file)
return;
fclose(out_file);
out_file = NULL;
#endif /* CONFIG_DEBUG_FILE */
}
#endif /* CONFIG_NO_STDOUT_DEBUG */
#ifndef CONFIG_NO_WPA_MSG
static wpa_msg_cb_func wpa_msg_cb = NULL;
void wpa_msg_register_cb(wpa_msg_cb_func func)
{
wpa_msg_cb = func;
}
void wpa_msg(void *ctx, int level, char *fmt, ...)
{
va_list ap;
char *buf;
const int buflen = 2048;
int len;
buf = os_malloc(buflen);
if (buf == NULL) {
wpa_printf(MSG_ERROR, "wpa_msg: Failed to allocate message "
"buffer");
return;
}
va_start(ap, fmt);
len = vsnprintf(buf, buflen, fmt, ap);
va_end(ap);
wpa_printf(level, "%s", buf);
if (wpa_msg_cb)
wpa_msg_cb(ctx, level, buf, len);
os_free(buf);
}
#endif /* CONFIG_NO_WPA_MSG */
#ifndef CONFIG_NO_HOSTAPD_LOGGER
static hostapd_logger_cb_func hostapd_logger_cb = NULL;
void hostapd_logger_register_cb(hostapd_logger_cb_func func)
{
hostapd_logger_cb = func;
}
void hostapd_logger(void *ctx, const u8 *addr, unsigned int module, int level,
const char *fmt, ...)
{
va_list ap;
char *buf;
const int buflen = 2048;
int len;
buf = os_malloc(buflen);
if (buf == NULL) {
wpa_printf(MSG_ERROR, "hostapd_logger: Failed to allocate "
"message buffer");
return;
}
va_start(ap, fmt);
len = vsnprintf(buf, buflen, fmt, ap);
va_end(ap);
if (hostapd_logger_cb)
hostapd_logger_cb(ctx, addr, module, level, buf, len);
else
wpa_printf(MSG_DEBUG, "hostapd_logger: %s", buf);
os_free(buf);
}
#endif /* CONFIG_NO_HOSTAPD_LOGGER */