wpa_debug.c
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00001 /*
00002  * wpa_supplicant/hostapd / Debug prints
00003  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #include "includes.h"
00016 
00017 #include "common.h"
00018 
00019 #ifdef CONFIG_DEBUG_SYSLOG
00020 #include <syslog.h>
00021 
00022 static int wpa_debug_syslog = 0;
00023 #endif /* CONFIG_DEBUG_SYSLOG */
00024 
00025 
00026 #ifdef CONFIG_DEBUG_FILE
00027 static FILE *out_file = NULL;
00028 #endif /* CONFIG_DEBUG_FILE */
00029 int wpa_debug_level = MSG_INFO;
00030 int wpa_debug_show_keys = 0;
00031 int wpa_debug_timestamp = 0;
00032 
00033 
00034 #ifndef CONFIG_NO_STDOUT_DEBUG
00035 
00036 void wpa_debug_print_timestamp(void)
00037 {
00038         struct os_time tv;
00039 
00040         if (!wpa_debug_timestamp)
00041                 return;
00042 
00043         os_get_time(&tv);
00044 #ifdef CONFIG_DEBUG_FILE
00045         if (out_file) {
00046                 fprintf(out_file, "%ld.%06u: ", (long) tv.sec,
00047                         (unsigned int) tv.usec);
00048         } else
00049 #endif /* CONFIG_DEBUG_FILE */
00050         printf("%ld.%06u: ", (long) tv.sec, (unsigned int) tv.usec);
00051 }
00052 
00053 
00054 #ifdef CONFIG_DEBUG_SYSLOG
00055 void wpa_debug_open_syslog(void)
00056 {
00057         openlog("wpa_supplicant", LOG_PID | LOG_NDELAY, LOG_DAEMON);
00058         wpa_debug_syslog++;
00059 }
00060 
00061 
00062 void wpa_debug_close_syslog(void)
00063 {
00064         if (wpa_debug_syslog)
00065                 closelog();
00066 }
00067 
00068 
00069 static int syslog_priority(int level)
00070 {
00071         switch (level) {
00072         case MSG_MSGDUMP:
00073         case MSG_DEBUG:
00074                 return LOG_DEBUG;
00075         case MSG_INFO:
00076                 return LOG_NOTICE;
00077         case MSG_WARNING:
00078                 return LOG_WARNING;
00079         case MSG_ERROR:
00080                 return LOG_ERR;
00081         }
00082         return LOG_INFO;
00083 }
00084 #endif /* CONFIG_DEBUG_SYSLOG */
00085 
00086 
00098 void wpa_printf(int level, const char *fmt, ...)
00099 {
00100         va_list ap;
00101 
00102         va_start(ap, fmt);
00103         if (level >= wpa_debug_level) {
00104 #ifdef CONFIG_DEBUG_SYSLOG
00105                 if (wpa_debug_syslog) {
00106                         vsyslog(syslog_priority(level), fmt, ap);
00107                 } else {
00108 #endif /* CONFIG_DEBUG_SYSLOG */
00109                 wpa_debug_print_timestamp();
00110 #ifdef CONFIG_DEBUG_FILE
00111                 if (out_file) {
00112                         vfprintf(out_file, fmt, ap);
00113                         fprintf(out_file, "\n");
00114                 } else {
00115 #endif /* CONFIG_DEBUG_FILE */
00116                 vprintf(fmt, ap);
00117                 printf("\n");
00118 #ifdef CONFIG_DEBUG_FILE
00119                 }
00120 #endif /* CONFIG_DEBUG_FILE */
00121 #ifdef CONFIG_DEBUG_SYSLOG
00122                 }
00123 #endif /* CONFIG_DEBUG_SYSLOG */
00124         }
00125         va_end(ap);
00126 }
00127 
00128 
00129 static void _wpa_hexdump(int level, const char *title, const u8 *buf,
00130                          size_t len, int show)
00131 {
00132         size_t i;
00133         if (level < wpa_debug_level)
00134                 return;
00135         wpa_debug_print_timestamp();
00136 #ifdef CONFIG_DEBUG_FILE
00137         if (out_file) {
00138                 fprintf(out_file, "%s - hexdump(len=%lu):",
00139                         title, (unsigned long) len);
00140                 if (buf == NULL) {
00141                         fprintf(out_file, " [NULL]");
00142                 } else if (show) {
00143                         for (i = 0; i < len; i++)
00144                                 fprintf(out_file, " %02x", buf[i]);
00145                 } else {
00146                         fprintf(out_file, " [REMOVED]");
00147                 }
00148                 fprintf(out_file, "\n");
00149         } else {
00150 #endif /* CONFIG_DEBUG_FILE */
00151         printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
00152         if (buf == NULL) {
00153                 printf(" [NULL]");
00154         } else if (show) {
00155                 for (i = 0; i < len; i++)
00156                         printf(" %02x", buf[i]);
00157         } else {
00158                 printf(" [REMOVED]");
00159         }
00160         printf("\n");
00161 #ifdef CONFIG_DEBUG_FILE
00162         }
00163 #endif /* CONFIG_DEBUG_FILE */
00164 }
00165 
00166 void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len)
00167 {
00168         _wpa_hexdump(level, title, buf, len, 1);
00169 }
00170 
00171 
00172 void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len)
00173 {
00174         _wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
00175 }
00176 
00177 
00178 static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
00179                                size_t len, int show)
00180 {
00181         size_t i, llen;
00182         const u8 *pos = buf;
00183         const size_t line_len = 16;
00184 
00185         if (level < wpa_debug_level)
00186                 return;
00187         wpa_debug_print_timestamp();
00188 #ifdef CONFIG_DEBUG_FILE
00189         if (out_file) {
00190                 if (!show) {
00191                         fprintf(out_file,
00192                                 "%s - hexdump_ascii(len=%lu): [REMOVED]\n",
00193                                 title, (unsigned long) len);
00194                         return;
00195                 }
00196                 if (buf == NULL) {
00197                         fprintf(out_file,
00198                                 "%s - hexdump_ascii(len=%lu): [NULL]\n",
00199                                 title, (unsigned long) len);
00200                         return;
00201                 }
00202                 fprintf(out_file, "%s - hexdump_ascii(len=%lu):\n",
00203                         title, (unsigned long) len);
00204                 while (len) {
00205                         llen = len > line_len ? line_len : len;
00206                         fprintf(out_file, "    ");
00207                         for (i = 0; i < llen; i++)
00208                                 fprintf(out_file, " %02x", pos[i]);
00209                         for (i = llen; i < line_len; i++)
00210                                 fprintf(out_file, "   ");
00211                         fprintf(out_file, "   ");
00212                         for (i = 0; i < llen; i++) {
00213                                 if (isprint(pos[i]))
00214                                         fprintf(out_file, "%c", pos[i]);
00215                                 else
00216                                         fprintf(out_file, "_");
00217                         }
00218                         for (i = llen; i < line_len; i++)
00219                                 fprintf(out_file, " ");
00220                         fprintf(out_file, "\n");
00221                         pos += llen;
00222                         len -= llen;
00223                 }
00224         } else {
00225 #endif /* CONFIG_DEBUG_FILE */
00226         if (!show) {
00227                 printf("%s - hexdump_ascii(len=%lu): [REMOVED]\n",
00228                        title, (unsigned long) len);
00229                 return;
00230         }
00231         if (buf == NULL) {
00232                 printf("%s - hexdump_ascii(len=%lu): [NULL]\n",
00233                        title, (unsigned long) len);
00234                 return;
00235         }
00236         printf("%s - hexdump_ascii(len=%lu):\n", title, (unsigned long) len);
00237         while (len) {
00238                 llen = len > line_len ? line_len : len;
00239                 printf("    ");
00240                 for (i = 0; i < llen; i++)
00241                         printf(" %02x", pos[i]);
00242                 for (i = llen; i < line_len; i++)
00243                         printf("   ");
00244                 printf("   ");
00245                 for (i = 0; i < llen; i++) {
00246                         if (isprint(pos[i]))
00247                                 printf("%c", pos[i]);
00248                         else
00249                                 printf("_");
00250                 }
00251                 for (i = llen; i < line_len; i++)
00252                         printf(" ");
00253                 printf("\n");
00254                 pos += llen;
00255                 len -= llen;
00256         }
00257 #ifdef CONFIG_DEBUG_FILE
00258         }
00259 #endif /* CONFIG_DEBUG_FILE */
00260 }
00261 
00262 
00263 void wpa_hexdump_ascii(int level, const char *title, const u8 *buf, size_t len)
00264 {
00265         _wpa_hexdump_ascii(level, title, buf, len, 1);
00266 }
00267 
00268 
00269 void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
00270                            size_t len)
00271 {
00272         _wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
00273 }
00274 
00275 
00276 int wpa_debug_open_file(const char *path)
00277 {
00278 #ifdef CONFIG_DEBUG_FILE
00279         if (!path)
00280                 return 0;
00281         out_file = fopen(path, "a");
00282         if (out_file == NULL) {
00283                 wpa_printf(MSG_ERROR, "wpa_debug_open_file: Failed to open "
00284                            "output file, using standard output");
00285                 return -1;
00286         }
00287 #ifndef _WIN32
00288         setvbuf(out_file, NULL, _IOLBF, 0);
00289 #endif /* _WIN32 */
00290 #endif /* CONFIG_DEBUG_FILE */
00291         return 0;
00292 }
00293 
00294 
00295 void wpa_debug_close_file(void)
00296 {
00297 #ifdef CONFIG_DEBUG_FILE
00298         if (!out_file)
00299                 return;
00300         fclose(out_file);
00301         out_file = NULL;
00302 #endif /* CONFIG_DEBUG_FILE */
00303 }
00304 
00305 #endif /* CONFIG_NO_STDOUT_DEBUG */
00306 
00307 
00308 #ifndef CONFIG_NO_WPA_MSG
00309 static wpa_msg_cb_func wpa_msg_cb = NULL;
00310 
00311 void wpa_msg_register_cb(wpa_msg_cb_func func)
00312 {
00313         wpa_msg_cb = func;
00314 }
00315 
00316 
00317 void wpa_msg(void *ctx, int level, const char *fmt, ...)
00318 {
00319         va_list ap;
00320         char *buf;
00321         const int buflen = 2048;
00322         int len;
00323 
00324         buf = os_malloc(buflen);
00325         if (buf == NULL) {
00326                 wpa_printf(MSG_ERROR, "wpa_msg: Failed to allocate message "
00327                            "buffer");
00328                 return;
00329         }
00330         va_start(ap, fmt);
00331         len = vsnprintf(buf, buflen, fmt, ap);
00332         va_end(ap);
00333         wpa_printf(level, "%s", buf);
00334         if (wpa_msg_cb)
00335                 wpa_msg_cb(ctx, level, buf, len);
00336         os_free(buf);
00337 }
00338 
00339 
00340 void wpa_msg_ctrl(void *ctx, int level, const char *fmt, ...)
00341 {
00342         va_list ap;
00343         char *buf;
00344         const int buflen = 2048;
00345         int len;
00346 
00347         if (!wpa_msg_cb)
00348                 return;
00349 
00350         buf = os_malloc(buflen);
00351         if (buf == NULL) {
00352                 wpa_printf(MSG_ERROR, "wpa_msg_ctrl: Failed to allocate "
00353                            "message buffer");
00354                 return;
00355         }
00356         va_start(ap, fmt);
00357         len = vsnprintf(buf, buflen, fmt, ap);
00358         va_end(ap);
00359         wpa_msg_cb(ctx, level, buf, len);
00360         os_free(buf);
00361 }
00362 #endif /* CONFIG_NO_WPA_MSG */
00363 
00364 
00365 #ifndef CONFIG_NO_HOSTAPD_LOGGER
00366 static hostapd_logger_cb_func hostapd_logger_cb = NULL;
00367 
00368 void hostapd_logger_register_cb(hostapd_logger_cb_func func)
00369 {
00370         hostapd_logger_cb = func;
00371 }
00372 
00373 
00374 void hostapd_logger(void *ctx, const u8 *addr, unsigned int module, int level,
00375                     const char *fmt, ...)
00376 {
00377         va_list ap;
00378         char *buf;
00379         const int buflen = 2048;
00380         int len;
00381 
00382         buf = os_malloc(buflen);
00383         if (buf == NULL) {
00384                 wpa_printf(MSG_ERROR, "hostapd_logger: Failed to allocate "
00385                            "message buffer");
00386                 return;
00387         }
00388         va_start(ap, fmt);
00389         len = vsnprintf(buf, buflen, fmt, ap);
00390         va_end(ap);
00391         if (hostapd_logger_cb)
00392                 hostapd_logger_cb(ctx, addr, module, level, buf, len);
00393         else if (addr)
00394                 wpa_printf(MSG_DEBUG, "hostapd_logger: STA " MACSTR " - %s",
00395                            MAC2STR(addr), buf);
00396         else
00397                 wpa_printf(MSG_DEBUG, "hostapd_logger: %s", buf);
00398         os_free(buf);
00399 }
00400 #endif /* CONFIG_NO_HOSTAPD_LOGGER */


wpa_supplicant_node
Author(s): Package maintained by Blaise Gassend
autogenerated on Thu Apr 24 2014 15:33:21