2 * wpa_supplicant/hostapd / Debug prints
3 * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
13 #ifdef CONFIG_DEBUG_SYSLOG
16 static int wpa_debug_syslog = 0;
17 #endif /* CONFIG_DEBUG_SYSLOG */
19 #ifdef CONFIG_DEBUG_LINUX_TRACING
20 #include <sys/types.h>
26 static FILE *wpa_debug_tracing_file = NULL;
28 #define WPAS_TRACE_PFX "wpas <%d>: "
29 #endif /* CONFIG_DEBUG_LINUX_TRACING */
32 int wpa_debug_level = MSG_INFO;
33 int wpa_debug_show_keys = 0;
34 int wpa_debug_timestamp = 0;
37 #ifdef CONFIG_ANDROID_LOG
39 #include <android/log.h>
41 #ifndef ANDROID_LOG_NAME
42 #define ANDROID_LOG_NAME "wpa_supplicant"
43 #endif /* ANDROID_LOG_NAME */
45 static int wpa_to_android_level(int level)
47 if (level == MSG_ERROR)
48 return ANDROID_LOG_ERROR;
49 if (level == MSG_WARNING)
50 return ANDROID_LOG_WARN;
51 if (level == MSG_INFO)
52 return ANDROID_LOG_INFO;
53 return ANDROID_LOG_DEBUG;
56 #endif /* CONFIG_ANDROID_LOG */
58 #ifndef CONFIG_NO_STDOUT_DEBUG
60 #ifdef CONFIG_DEBUG_FILE
61 static FILE *out_file = NULL;
62 #endif /* CONFIG_DEBUG_FILE */
65 void wpa_debug_print_timestamp(void)
67 #ifndef CONFIG_ANDROID_LOG
70 if (!wpa_debug_timestamp)
74 #ifdef CONFIG_DEBUG_FILE
76 fprintf(out_file, "%ld.%06u: ", (long) tv.sec,
77 (unsigned int) tv.usec);
79 #endif /* CONFIG_DEBUG_FILE */
80 printf("%ld.%06u: ", (long) tv.sec, (unsigned int) tv.usec);
81 #endif /* CONFIG_ANDROID_LOG */
85 #ifdef CONFIG_DEBUG_SYSLOG
87 #define LOG_HOSTAPD LOG_DAEMON
88 #endif /* LOG_HOSTAPD */
90 void wpa_debug_open_syslog(void)
92 openlog("wpa_supplicant", LOG_PID | LOG_NDELAY, LOG_HOSTAPD);
97 void wpa_debug_close_syslog(void)
104 static int syslog_priority(int level)
119 #endif /* CONFIG_DEBUG_SYSLOG */
122 #ifdef CONFIG_DEBUG_LINUX_TRACING
124 int wpa_debug_open_linux_tracing(void)
126 int mounts, trace_fd;
129 char *line, *tmp1, *path = NULL;
131 mounts = open("/proc/mounts", O_RDONLY);
133 printf("no /proc/mounts\n");
137 buflen = read(mounts, buf, sizeof(buf) - 1);
140 printf("failed to read /proc/mounts\n");
144 line = strtok_r(buf, "\n", &tmp1);
146 char *tmp2, *tmp_path, *fstype;
147 /* "<dev> <mountpoint> <fs type> ..." */
148 strtok_r(line, " ", &tmp2);
149 tmp_path = strtok_r(NULL, " ", &tmp2);
150 fstype = strtok_r(NULL, " ", &tmp2);
151 if (strcmp(fstype, "debugfs") == 0) {
156 line = strtok_r(NULL, "\n", &tmp1);
160 printf("debugfs mountpoint not found\n");
164 snprintf(buf, sizeof(buf) - 1, "%s/tracing/trace_marker", path);
166 trace_fd = open(buf, O_WRONLY);
168 printf("failed to open trace_marker file\n");
171 wpa_debug_tracing_file = fdopen(trace_fd, "w");
172 if (wpa_debug_tracing_file == NULL) {
174 printf("failed to fdopen()\n");
182 void wpa_debug_close_linux_tracing(void)
184 if (wpa_debug_tracing_file == NULL)
186 fclose(wpa_debug_tracing_file);
187 wpa_debug_tracing_file = NULL;
190 #endif /* CONFIG_DEBUG_LINUX_TRACING */
194 * wpa_printf - conditional printf
195 * @level: priority level (MSG_*) of the message
196 * @fmt: printf format string, followed by optional arguments
198 * This function is used to print conditional debugging and error messages. The
199 * output may be directed to stdout, stderr, and/or syslog based on
202 * Note: New line '\n' is added to the end of the text when printing to stdout.
204 void wpa_printf(int level, const char *fmt, ...)
209 if (level >= wpa_debug_level) {
210 #ifdef CONFIG_ANDROID_LOG
211 __android_log_vprint(wpa_to_android_level(level),
212 ANDROID_LOG_NAME, fmt, ap);
213 #else /* CONFIG_ANDROID_LOG */
214 #ifdef CONFIG_DEBUG_SYSLOG
215 if (wpa_debug_syslog) {
216 vsyslog(syslog_priority(level), fmt, ap);
218 #endif /* CONFIG_DEBUG_SYSLOG */
219 wpa_debug_print_timestamp();
220 #ifdef CONFIG_DEBUG_FILE
222 vfprintf(out_file, fmt, ap);
223 fprintf(out_file, "\n");
225 #endif /* CONFIG_DEBUG_FILE */
228 #ifdef CONFIG_DEBUG_FILE
230 #endif /* CONFIG_DEBUG_FILE */
231 #ifdef CONFIG_DEBUG_SYSLOG
233 #endif /* CONFIG_DEBUG_SYSLOG */
234 #endif /* CONFIG_ANDROID_LOG */
238 #ifdef CONFIG_DEBUG_LINUX_TRACING
239 if (wpa_debug_tracing_file != NULL) {
241 fprintf(wpa_debug_tracing_file, WPAS_TRACE_PFX, level);
242 vfprintf(wpa_debug_tracing_file, fmt, ap);
243 fprintf(wpa_debug_tracing_file, "\n");
244 fflush(wpa_debug_tracing_file);
247 #endif /* CONFIG_DEBUG_LINUX_TRACING */
251 static void _wpa_hexdump(int level, const char *title, const u8 *buf,
252 size_t len, int show)
256 #ifdef CONFIG_DEBUG_LINUX_TRACING
257 if (wpa_debug_tracing_file != NULL) {
258 fprintf(wpa_debug_tracing_file,
259 WPAS_TRACE_PFX "%s - hexdump(len=%lu):",
260 level, title, (unsigned long) len);
262 fprintf(wpa_debug_tracing_file, " [NULL]\n");
264 fprintf(wpa_debug_tracing_file, " [REMOVED]\n");
266 for (i = 0; i < len; i++)
267 fprintf(wpa_debug_tracing_file,
270 fflush(wpa_debug_tracing_file);
272 #endif /* CONFIG_DEBUG_LINUX_TRACING */
274 if (level < wpa_debug_level)
276 #ifdef CONFIG_ANDROID_LOG
283 } else if (len == 0) {
285 } else if (show && len) {
286 /* Limit debug message length for Android log */
289 strbuf = os_malloc(1 + 3 * slen);
290 if (strbuf == NULL) {
291 wpa_printf(MSG_ERROR, "wpa_hexdump: Failed to "
292 "allocate message buffer");
296 for (i = 0; i < slen; i++)
297 os_snprintf(&strbuf[i * 3], 4, " %02x",
302 display = " [REMOVED]";
305 __android_log_print(wpa_to_android_level(level),
307 "%s - hexdump(len=%lu):%s%s",
308 title, (long unsigned int) len, display,
309 len > slen ? " ..." : "");
313 #else /* CONFIG_ANDROID_LOG */
314 #ifdef CONFIG_DEBUG_SYSLOG
315 if (wpa_debug_syslog) {
321 } else if (len == 0) {
323 } else if (show && len) {
324 strbuf = os_malloc(1 + 3 * len);
325 if (strbuf == NULL) {
326 wpa_printf(MSG_ERROR, "wpa_hexdump: Failed to "
327 "allocate message buffer");
331 for (i = 0; i < len; i++)
332 os_snprintf(&strbuf[i * 3], 4, " %02x",
337 display = " [REMOVED]";
340 syslog(syslog_priority(level), "%s - hexdump(len=%lu):%s",
341 title, (unsigned long) len, display);
345 #endif /* CONFIG_DEBUG_SYSLOG */
346 wpa_debug_print_timestamp();
347 #ifdef CONFIG_DEBUG_FILE
349 fprintf(out_file, "%s - hexdump(len=%lu):",
350 title, (unsigned long) len);
352 fprintf(out_file, " [NULL]");
354 for (i = 0; i < len; i++)
355 fprintf(out_file, " %02x", buf[i]);
357 fprintf(out_file, " [REMOVED]");
359 fprintf(out_file, "\n");
361 #endif /* CONFIG_DEBUG_FILE */
362 printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
366 for (i = 0; i < len; i++)
367 printf(" %02x", buf[i]);
369 printf(" [REMOVED]");
372 #ifdef CONFIG_DEBUG_FILE
374 #endif /* CONFIG_DEBUG_FILE */
375 #endif /* CONFIG_ANDROID_LOG */
378 void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len)
380 _wpa_hexdump(level, title, buf, len, 1);
384 void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len)
386 _wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
390 static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
391 size_t len, int show)
395 const size_t line_len = 16;
397 #ifdef CONFIG_DEBUG_LINUX_TRACING
398 if (wpa_debug_tracing_file != NULL) {
399 fprintf(wpa_debug_tracing_file,
400 WPAS_TRACE_PFX "%s - hexdump_ascii(len=%lu):",
401 level, title, (unsigned long) len);
403 fprintf(wpa_debug_tracing_file, " [NULL]\n");
405 fprintf(wpa_debug_tracing_file, " [REMOVED]\n");
407 /* can do ascii processing in userspace */
408 for (i = 0; i < len; i++)
409 fprintf(wpa_debug_tracing_file,
412 fflush(wpa_debug_tracing_file);
414 #endif /* CONFIG_DEBUG_LINUX_TRACING */
416 if (level < wpa_debug_level)
418 #ifdef CONFIG_ANDROID_LOG
419 _wpa_hexdump(level, title, buf, len, show);
420 #else /* CONFIG_ANDROID_LOG */
421 wpa_debug_print_timestamp();
422 #ifdef CONFIG_DEBUG_FILE
426 "%s - hexdump_ascii(len=%lu): [REMOVED]\n",
427 title, (unsigned long) len);
432 "%s - hexdump_ascii(len=%lu): [NULL]\n",
433 title, (unsigned long) len);
436 fprintf(out_file, "%s - hexdump_ascii(len=%lu):\n",
437 title, (unsigned long) len);
439 llen = len > line_len ? line_len : len;
440 fprintf(out_file, " ");
441 for (i = 0; i < llen; i++)
442 fprintf(out_file, " %02x", pos[i]);
443 for (i = llen; i < line_len; i++)
444 fprintf(out_file, " ");
445 fprintf(out_file, " ");
446 for (i = 0; i < llen; i++) {
448 fprintf(out_file, "%c", pos[i]);
450 fprintf(out_file, "_");
452 for (i = llen; i < line_len; i++)
453 fprintf(out_file, " ");
454 fprintf(out_file, "\n");
459 #endif /* CONFIG_DEBUG_FILE */
461 printf("%s - hexdump_ascii(len=%lu): [REMOVED]\n",
462 title, (unsigned long) len);
466 printf("%s - hexdump_ascii(len=%lu): [NULL]\n",
467 title, (unsigned long) len);
470 printf("%s - hexdump_ascii(len=%lu):\n", title, (unsigned long) len);
472 llen = len > line_len ? line_len : len;
474 for (i = 0; i < llen; i++)
475 printf(" %02x", pos[i]);
476 for (i = llen; i < line_len; i++)
479 for (i = 0; i < llen; i++) {
481 printf("%c", pos[i]);
485 for (i = llen; i < line_len; i++)
491 #ifdef CONFIG_DEBUG_FILE
493 #endif /* CONFIG_DEBUG_FILE */
494 #endif /* CONFIG_ANDROID_LOG */
498 void wpa_hexdump_ascii(int level, const char *title, const u8 *buf, size_t len)
500 _wpa_hexdump_ascii(level, title, buf, len, 1);
504 void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
507 _wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
511 #ifdef CONFIG_DEBUG_FILE
512 static char *last_path = NULL;
513 #endif /* CONFIG_DEBUG_FILE */
515 int wpa_debug_reopen_file(void)
517 #ifdef CONFIG_DEBUG_FILE
520 char *tmp = os_strdup(last_path);
521 wpa_debug_close_file();
522 rv = wpa_debug_open_file(tmp);
525 wpa_printf(MSG_ERROR, "Last-path was not set, cannot "
526 "re-open log file.");
530 #else /* CONFIG_DEBUG_FILE */
532 #endif /* CONFIG_DEBUG_FILE */
536 int wpa_debug_open_file(const char *path)
538 #ifdef CONFIG_DEBUG_FILE
542 if (last_path == NULL || os_strcmp(last_path, path) != 0) {
543 /* Save our path to enable re-open */
545 last_path = os_strdup(path);
548 out_file = fopen(path, "a");
549 if (out_file == NULL) {
550 wpa_printf(MSG_ERROR, "wpa_debug_open_file: Failed to open "
551 "output file, using standard output");
555 setvbuf(out_file, NULL, _IOLBF, 0);
557 #endif /* CONFIG_DEBUG_FILE */
562 void wpa_debug_close_file(void)
564 #ifdef CONFIG_DEBUG_FILE
571 #endif /* CONFIG_DEBUG_FILE */
574 #endif /* CONFIG_NO_STDOUT_DEBUG */
577 #ifndef CONFIG_NO_WPA_MSG
578 static wpa_msg_cb_func wpa_msg_cb = NULL;
580 void wpa_msg_register_cb(wpa_msg_cb_func func)
586 static wpa_msg_get_ifname_func wpa_msg_ifname_cb = NULL;
588 void wpa_msg_register_ifname_cb(wpa_msg_get_ifname_func func)
590 wpa_msg_ifname_cb = func;
594 void wpa_msg(void *ctx, int level, const char *fmt, ...)
598 const int buflen = 2048;
602 buf = os_malloc(buflen);
604 wpa_printf(MSG_ERROR, "wpa_msg: Failed to allocate message "
610 if (wpa_msg_ifname_cb) {
611 const char *ifname = wpa_msg_ifname_cb(ctx);
613 int res = os_snprintf(prefix, sizeof(prefix), "%s: ",
615 if (res < 0 || res >= (int) sizeof(prefix))
619 len = vsnprintf(buf, buflen, fmt, ap);
621 wpa_printf(level, "%s%s", prefix, buf);
623 wpa_msg_cb(ctx, level, buf, len);
628 void wpa_msg_ctrl(void *ctx, int level, const char *fmt, ...)
632 const int buflen = 2048;
638 buf = os_malloc(buflen);
640 wpa_printf(MSG_ERROR, "wpa_msg_ctrl: Failed to allocate "
645 len = vsnprintf(buf, buflen, fmt, ap);
647 wpa_msg_cb(ctx, level, buf, len);
650 #endif /* CONFIG_NO_WPA_MSG */
653 #ifndef CONFIG_NO_HOSTAPD_LOGGER
654 static hostapd_logger_cb_func hostapd_logger_cb = NULL;
656 void hostapd_logger_register_cb(hostapd_logger_cb_func func)
658 hostapd_logger_cb = func;
662 void hostapd_logger(void *ctx, const u8 *addr, unsigned int module, int level,
663 const char *fmt, ...)
667 const int buflen = 2048;
670 buf = os_malloc(buflen);
672 wpa_printf(MSG_ERROR, "hostapd_logger: Failed to allocate "
677 len = vsnprintf(buf, buflen, fmt, ap);
679 if (hostapd_logger_cb)
680 hostapd_logger_cb(ctx, addr, module, level, buf, len);
682 wpa_printf(MSG_DEBUG, "hostapd_logger: STA " MACSTR " - %s",
685 wpa_printf(MSG_DEBUG, "hostapd_logger: %s", buf);
688 #endif /* CONFIG_NO_HOSTAPD_LOGGER */