Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / utils / wpa_debug.c
CommitLineData
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1/*
2 * wpa_supplicant/hostapd / Debug prints
4781064b 3 * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
a875087d 4 *
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5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
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7 */
8
9#include "includes.h"
10
11#include "common.h"
12
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13#ifdef CONFIG_DEBUG_SYSLOG
14#include <syslog.h>
15
16static int wpa_debug_syslog = 0;
17#endif /* CONFIG_DEBUG_SYSLOG */
18
19#ifdef CONFIG_DEBUG_LINUX_TRACING
20#include <sys/types.h>
21#include <sys/stat.h>
22#include <fcntl.h>
23#include <string.h>
24#include <stdio.h>
25
26static FILE *wpa_debug_tracing_file = NULL;
27
28#define WPAS_TRACE_PFX "wpas <%d>: "
29#endif /* CONFIG_DEBUG_LINUX_TRACING */
30
a875087d 31
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32int wpa_debug_level = MSG_INFO;
33int wpa_debug_show_keys = 0;
34int wpa_debug_timestamp = 0;
35
36
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37#ifdef CONFIG_ANDROID_LOG
38
39#include <android/log.h>
40
41#ifndef ANDROID_LOG_NAME
42#define ANDROID_LOG_NAME "wpa_supplicant"
43#endif /* ANDROID_LOG_NAME */
44
45static int wpa_to_android_level(int level)
46{
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;
54}
55
56#endif /* CONFIG_ANDROID_LOG */
57
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58#ifndef CONFIG_NO_STDOUT_DEBUG
59
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60#ifdef CONFIG_DEBUG_FILE
61static FILE *out_file = NULL;
62#endif /* CONFIG_DEBUG_FILE */
63
64
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65void wpa_debug_print_timestamp(void)
66{
4781064b 67#ifndef CONFIG_ANDROID_LOG
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68 struct os_time tv;
69
70 if (!wpa_debug_timestamp)
71 return;
72
73 os_get_time(&tv);
74#ifdef CONFIG_DEBUG_FILE
75 if (out_file) {
76 fprintf(out_file, "%ld.%06u: ", (long) tv.sec,
77 (unsigned int) tv.usec);
78 } else
79#endif /* CONFIG_DEBUG_FILE */
80 printf("%ld.%06u: ", (long) tv.sec, (unsigned int) tv.usec);
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81#endif /* CONFIG_ANDROID_LOG */
82}
83
84
85#ifdef CONFIG_DEBUG_SYSLOG
86#ifndef LOG_HOSTAPD
87#define LOG_HOSTAPD LOG_DAEMON
88#endif /* LOG_HOSTAPD */
89
90void wpa_debug_open_syslog(void)
91{
92 openlog("wpa_supplicant", LOG_PID | LOG_NDELAY, LOG_HOSTAPD);
93 wpa_debug_syslog++;
94}
95
96
97void wpa_debug_close_syslog(void)
98{
99 if (wpa_debug_syslog)
100 closelog();
101}
102
103
104static int syslog_priority(int level)
105{
106 switch (level) {
107 case MSG_MSGDUMP:
108 case MSG_DEBUG:
109 return LOG_DEBUG;
110 case MSG_INFO:
111 return LOG_NOTICE;
112 case MSG_WARNING:
113 return LOG_WARNING;
114 case MSG_ERROR:
115 return LOG_ERR;
116 }
117 return LOG_INFO;
118}
119#endif /* CONFIG_DEBUG_SYSLOG */
120
121
122#ifdef CONFIG_DEBUG_LINUX_TRACING
123
124int wpa_debug_open_linux_tracing(void)
125{
126 int mounts, trace_fd;
127 char buf[4096] = {};
128 ssize_t buflen;
129 char *line, *tmp1, *path = NULL;
130
131 mounts = open("/proc/mounts", O_RDONLY);
132 if (mounts < 0) {
133 printf("no /proc/mounts\n");
134 return -1;
135 }
136
137 buflen = read(mounts, buf, sizeof(buf) - 1);
138 close(mounts);
139 if (buflen < 0) {
140 printf("failed to read /proc/mounts\n");
141 return -1;
142 }
143
144 line = strtok_r(buf, "\n", &tmp1);
145 while (line) {
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) {
152 path = tmp_path;
153 break;
154 }
155
156 line = strtok_r(NULL, "\n", &tmp1);
157 }
158
159 if (path == NULL) {
160 printf("debugfs mountpoint not found\n");
161 return -1;
162 }
163
164 snprintf(buf, sizeof(buf) - 1, "%s/tracing/trace_marker", path);
165
166 trace_fd = open(buf, O_WRONLY);
167 if (trace_fd < 0) {
168 printf("failed to open trace_marker file\n");
169 return -1;
170 }
171 wpa_debug_tracing_file = fdopen(trace_fd, "w");
172 if (wpa_debug_tracing_file == NULL) {
173 close(trace_fd);
174 printf("failed to fdopen()\n");
175 return -1;
176 }
177
178 return 0;
179}
180
181
182void wpa_debug_close_linux_tracing(void)
183{
184 if (wpa_debug_tracing_file == NULL)
185 return;
186 fclose(wpa_debug_tracing_file);
187 wpa_debug_tracing_file = NULL;
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188}
189
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190#endif /* CONFIG_DEBUG_LINUX_TRACING */
191
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192
193/**
194 * wpa_printf - conditional printf
195 * @level: priority level (MSG_*) of the message
196 * @fmt: printf format string, followed by optional arguments
197 *
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
200 * configuration.
201 *
202 * Note: New line '\n' is added to the end of the text when printing to stdout.
203 */
204void wpa_printf(int level, const char *fmt, ...)
205{
206 va_list ap;
207
208 va_start(ap, fmt);
209 if (level >= wpa_debug_level) {
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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);
217 } else {
218#endif /* CONFIG_DEBUG_SYSLOG */
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219 wpa_debug_print_timestamp();
220#ifdef CONFIG_DEBUG_FILE
221 if (out_file) {
222 vfprintf(out_file, fmt, ap);
223 fprintf(out_file, "\n");
224 } else {
225#endif /* CONFIG_DEBUG_FILE */
226 vprintf(fmt, ap);
227 printf("\n");
228#ifdef CONFIG_DEBUG_FILE
229 }
230#endif /* CONFIG_DEBUG_FILE */
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231#ifdef CONFIG_DEBUG_SYSLOG
232 }
233#endif /* CONFIG_DEBUG_SYSLOG */
234#endif /* CONFIG_ANDROID_LOG */
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235 }
236 va_end(ap);
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237
238#ifdef CONFIG_DEBUG_LINUX_TRACING
239 if (wpa_debug_tracing_file != NULL) {
240 va_start(ap, fmt);
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);
245 va_end(ap);
246 }
247#endif /* CONFIG_DEBUG_LINUX_TRACING */
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248}
249
250
251static void _wpa_hexdump(int level, const char *title, const u8 *buf,
252 size_t len, int show)
253{
254 size_t i;
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255
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);
261 if (buf == NULL) {
262 fprintf(wpa_debug_tracing_file, " [NULL]\n");
263 } else if (!show) {
264 fprintf(wpa_debug_tracing_file, " [REMOVED]\n");
265 } else {
266 for (i = 0; i < len; i++)
267 fprintf(wpa_debug_tracing_file,
268 " %02x", buf[i]);
269 }
270 fflush(wpa_debug_tracing_file);
271 }
272#endif /* CONFIG_DEBUG_LINUX_TRACING */
273
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274 if (level < wpa_debug_level)
275 return;
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276#ifdef CONFIG_ANDROID_LOG
277 {
278 const char *display;
279 char *strbuf = NULL;
280 size_t slen = len;
281 if (buf == NULL) {
282 display = " [NULL]";
283 } else if (len == 0) {
284 display = "";
285 } else if (show && len) {
286 /* Limit debug message length for Android log */
287 if (slen > 32)
288 slen = 32;
289 strbuf = os_malloc(1 + 3 * slen);
290 if (strbuf == NULL) {
291 wpa_printf(MSG_ERROR, "wpa_hexdump: Failed to "
292 "allocate message buffer");
293 return;
294 }
295
296 for (i = 0; i < slen; i++)
297 os_snprintf(&strbuf[i * 3], 4, " %02x",
298 buf[i]);
299
300 display = strbuf;
301 } else {
302 display = " [REMOVED]";
303 }
304
305 __android_log_print(wpa_to_android_level(level),
306 ANDROID_LOG_NAME,
307 "%s - hexdump(len=%lu):%s%s",
308 title, (long unsigned int) len, display,
309 len > slen ? " ..." : "");
310 os_free(strbuf);
311 return;
312 }
313#else /* CONFIG_ANDROID_LOG */
314#ifdef CONFIG_DEBUG_SYSLOG
315 if (wpa_debug_syslog) {
316 const char *display;
317 char *strbuf = NULL;
318
319 if (buf == NULL) {
320 display = " [NULL]";
321 } else if (len == 0) {
322 display = "";
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");
328 return;
329 }
330
331 for (i = 0; i < len; i++)
332 os_snprintf(&strbuf[i * 3], 4, " %02x",
333 buf[i]);
334
335 display = strbuf;
336 } else {
337 display = " [REMOVED]";
338 }
339
340 syslog(syslog_priority(level), "%s - hexdump(len=%lu):%s",
341 title, (unsigned long) len, display);
342 os_free(strbuf);
343 return;
344 }
345#endif /* CONFIG_DEBUG_SYSLOG */
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346 wpa_debug_print_timestamp();
347#ifdef CONFIG_DEBUG_FILE
348 if (out_file) {
349 fprintf(out_file, "%s - hexdump(len=%lu):",
350 title, (unsigned long) len);
351 if (buf == NULL) {
352 fprintf(out_file, " [NULL]");
353 } else if (show) {
354 for (i = 0; i < len; i++)
355 fprintf(out_file, " %02x", buf[i]);
356 } else {
357 fprintf(out_file, " [REMOVED]");
358 }
359 fprintf(out_file, "\n");
360 } else {
361#endif /* CONFIG_DEBUG_FILE */
362 printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
363 if (buf == NULL) {
364 printf(" [NULL]");
365 } else if (show) {
366 for (i = 0; i < len; i++)
367 printf(" %02x", buf[i]);
368 } else {
369 printf(" [REMOVED]");
370 }
371 printf("\n");
372#ifdef CONFIG_DEBUG_FILE
373 }
374#endif /* CONFIG_DEBUG_FILE */
4781064b 375#endif /* CONFIG_ANDROID_LOG */
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376}
377
4781064b 378void wpa_hexdump(int level, const char *title, const void *buf, size_t len)
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379{
380 _wpa_hexdump(level, title, buf, len, 1);
381}
382
383
4781064b 384void wpa_hexdump_key(int level, const char *title, const void *buf, size_t len)
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385{
386 _wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
387}
388
389
4781064b 390static void _wpa_hexdump_ascii(int level, const char *title, const void *buf,
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391 size_t len, int show)
392{
393 size_t i, llen;
394 const u8 *pos = buf;
395 const size_t line_len = 16;
396
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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);
402 if (buf == NULL) {
403 fprintf(wpa_debug_tracing_file, " [NULL]\n");
404 } else if (!show) {
405 fprintf(wpa_debug_tracing_file, " [REMOVED]\n");
406 } else {
407 /* can do ascii processing in userspace */
408 for (i = 0; i < len; i++)
409 fprintf(wpa_debug_tracing_file,
410 " %02x", pos[i]);
411 }
412 fflush(wpa_debug_tracing_file);
413 }
414#endif /* CONFIG_DEBUG_LINUX_TRACING */
415
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416 if (level < wpa_debug_level)
417 return;
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418#ifdef CONFIG_ANDROID_LOG
419 _wpa_hexdump(level, title, buf, len, show);
420#else /* CONFIG_ANDROID_LOG */
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421 wpa_debug_print_timestamp();
422#ifdef CONFIG_DEBUG_FILE
423 if (out_file) {
424 if (!show) {
425 fprintf(out_file,
426 "%s - hexdump_ascii(len=%lu): [REMOVED]\n",
427 title, (unsigned long) len);
428 return;
429 }
430 if (buf == NULL) {
431 fprintf(out_file,
432 "%s - hexdump_ascii(len=%lu): [NULL]\n",
433 title, (unsigned long) len);
434 return;
435 }
436 fprintf(out_file, "%s - hexdump_ascii(len=%lu):\n",
437 title, (unsigned long) len);
438 while (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++) {
447 if (isprint(pos[i]))
448 fprintf(out_file, "%c", pos[i]);
449 else
450 fprintf(out_file, "_");
451 }
452 for (i = llen; i < line_len; i++)
453 fprintf(out_file, " ");
454 fprintf(out_file, "\n");
455 pos += llen;
456 len -= llen;
457 }
458 } else {
459#endif /* CONFIG_DEBUG_FILE */
460 if (!show) {
461 printf("%s - hexdump_ascii(len=%lu): [REMOVED]\n",
462 title, (unsigned long) len);
463 return;
464 }
465 if (buf == NULL) {
466 printf("%s - hexdump_ascii(len=%lu): [NULL]\n",
467 title, (unsigned long) len);
468 return;
469 }
470 printf("%s - hexdump_ascii(len=%lu):\n", title, (unsigned long) len);
471 while (len) {
472 llen = len > line_len ? line_len : len;
473 printf(" ");
474 for (i = 0; i < llen; i++)
475 printf(" %02x", pos[i]);
476 for (i = llen; i < line_len; i++)
477 printf(" ");
478 printf(" ");
479 for (i = 0; i < llen; i++) {
480 if (isprint(pos[i]))
481 printf("%c", pos[i]);
482 else
483 printf("_");
484 }
485 for (i = llen; i < line_len; i++)
486 printf(" ");
487 printf("\n");
488 pos += llen;
489 len -= llen;
490 }
491#ifdef CONFIG_DEBUG_FILE
492 }
493#endif /* CONFIG_DEBUG_FILE */
4781064b 494#endif /* CONFIG_ANDROID_LOG */
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495}
496
497
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498void wpa_hexdump_ascii(int level, const char *title, const void *buf,
499 size_t len)
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500{
501 _wpa_hexdump_ascii(level, title, buf, len, 1);
502}
503
504
4781064b 505void wpa_hexdump_ascii_key(int level, const char *title, const void *buf,
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506 size_t len)
507{
508 _wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
509}
510
511
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512#ifdef CONFIG_DEBUG_FILE
513static char *last_path = NULL;
514#endif /* CONFIG_DEBUG_FILE */
515
516int wpa_debug_reopen_file(void)
517{
518#ifdef CONFIG_DEBUG_FILE
519 int rv;
520 if (last_path) {
521 char *tmp = os_strdup(last_path);
522 wpa_debug_close_file();
523 rv = wpa_debug_open_file(tmp);
524 os_free(tmp);
525 } else {
526 wpa_printf(MSG_ERROR, "Last-path was not set, cannot "
527 "re-open log file.");
528 rv = -1;
529 }
530 return rv;
531#else /* CONFIG_DEBUG_FILE */
532 return 0;
533#endif /* CONFIG_DEBUG_FILE */
534}
535
536
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537int wpa_debug_open_file(const char *path)
538{
539#ifdef CONFIG_DEBUG_FILE
540 if (!path)
541 return 0;
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542
543 if (last_path == NULL || os_strcmp(last_path, path) != 0) {
544 /* Save our path to enable re-open */
545 os_free(last_path);
546 last_path = os_strdup(path);
547 }
548
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549 out_file = fopen(path, "a");
550 if (out_file == NULL) {
551 wpa_printf(MSG_ERROR, "wpa_debug_open_file: Failed to open "
552 "output file, using standard output");
553 return -1;
554 }
555#ifndef _WIN32
556 setvbuf(out_file, NULL, _IOLBF, 0);
557#endif /* _WIN32 */
558#endif /* CONFIG_DEBUG_FILE */
559 return 0;
560}
561
562
563void wpa_debug_close_file(void)
564{
565#ifdef CONFIG_DEBUG_FILE
566 if (!out_file)
567 return;
568 fclose(out_file);
569 out_file = NULL;
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570 os_free(last_path);
571 last_path = NULL;
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572#endif /* CONFIG_DEBUG_FILE */
573}
574
575#endif /* CONFIG_NO_STDOUT_DEBUG */
576
577
578#ifndef CONFIG_NO_WPA_MSG
579static wpa_msg_cb_func wpa_msg_cb = NULL;
580
581void wpa_msg_register_cb(wpa_msg_cb_func func)
582{
583 wpa_msg_cb = func;
584}
585
586
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587static wpa_msg_get_ifname_func wpa_msg_ifname_cb = NULL;
588
589void wpa_msg_register_ifname_cb(wpa_msg_get_ifname_func func)
590{
591 wpa_msg_ifname_cb = func;
592}
593
594
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595void wpa_msg(void *ctx, int level, const char *fmt, ...)
596{
597 va_list ap;
598 char *buf;
599 const int buflen = 2048;
600 int len;
4781064b 601 char prefix[130];
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602
603 buf = os_malloc(buflen);
604 if (buf == NULL) {
605 wpa_printf(MSG_ERROR, "wpa_msg: Failed to allocate message "
606 "buffer");
607 return;
608 }
609 va_start(ap, fmt);
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610 prefix[0] = '\0';
611 if (wpa_msg_ifname_cb) {
612 const char *ifname = wpa_msg_ifname_cb(ctx);
613 if (ifname) {
614 int res = os_snprintf(prefix, sizeof(prefix), "%s: ",
615 ifname);
616 if (res < 0 || res >= (int) sizeof(prefix))
617 prefix[0] = '\0';
618 }
619 }
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620 len = vsnprintf(buf, buflen, fmt, ap);
621 va_end(ap);
4781064b 622 wpa_printf(level, "%s%s", prefix, buf);
a875087d 623 if (wpa_msg_cb)
4781064b 624 wpa_msg_cb(ctx, level, 0, buf, len);
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625 os_free(buf);
626}
627
628
629void wpa_msg_ctrl(void *ctx, int level, const char *fmt, ...)
630{
631 va_list ap;
632 char *buf;
633 const int buflen = 2048;
634 int len;
635
636 if (!wpa_msg_cb)
637 return;
638
639 buf = os_malloc(buflen);
640 if (buf == NULL) {
641 wpa_printf(MSG_ERROR, "wpa_msg_ctrl: Failed to allocate "
642 "message buffer");
643 return;
644 }
645 va_start(ap, fmt);
646 len = vsnprintf(buf, buflen, fmt, ap);
647 va_end(ap);
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648 wpa_msg_cb(ctx, level, 0, buf, len);
649 os_free(buf);
650}
651
652
653void wpa_msg_global(void *ctx, int level, const char *fmt, ...)
654{
655 va_list ap;
656 char *buf;
657 const int buflen = 2048;
658 int len;
659
660 buf = os_malloc(buflen);
661 if (buf == NULL) {
662 wpa_printf(MSG_ERROR, "wpa_msg_global: Failed to allocate "
663 "message buffer");
664 return;
665 }
666 va_start(ap, fmt);
667 len = vsnprintf(buf, buflen, fmt, ap);
668 va_end(ap);
669 wpa_printf(level, "%s", buf);
670 if (wpa_msg_cb)
671 wpa_msg_cb(ctx, level, 1, buf, len);
672 os_free(buf);
673}
674
675
676void wpa_msg_no_global(void *ctx, int level, const char *fmt, ...)
677{
678 va_list ap;
679 char *buf;
680 const int buflen = 2048;
681 int len;
682
683 buf = os_malloc(buflen);
684 if (buf == NULL) {
685 wpa_printf(MSG_ERROR, "wpa_msg_no_global: Failed to allocate "
686 "message buffer");
687 return;
688 }
689 va_start(ap, fmt);
690 len = vsnprintf(buf, buflen, fmt, ap);
691 va_end(ap);
692 wpa_printf(level, "%s", buf);
693 if (wpa_msg_cb)
694 wpa_msg_cb(ctx, level, 2, buf, len);
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695 os_free(buf);
696}
4781064b 697
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698#endif /* CONFIG_NO_WPA_MSG */
699
700
701#ifndef CONFIG_NO_HOSTAPD_LOGGER
702static hostapd_logger_cb_func hostapd_logger_cb = NULL;
703
704void hostapd_logger_register_cb(hostapd_logger_cb_func func)
705{
706 hostapd_logger_cb = func;
707}
708
709
710void hostapd_logger(void *ctx, const u8 *addr, unsigned int module, int level,
711 const char *fmt, ...)
712{
713 va_list ap;
714 char *buf;
715 const int buflen = 2048;
716 int len;
717
718 buf = os_malloc(buflen);
719 if (buf == NULL) {
720 wpa_printf(MSG_ERROR, "hostapd_logger: Failed to allocate "
721 "message buffer");
722 return;
723 }
724 va_start(ap, fmt);
725 len = vsnprintf(buf, buflen, fmt, ap);
726 va_end(ap);
727 if (hostapd_logger_cb)
728 hostapd_logger_cb(ctx, addr, module, level, buf, len);
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JM
729 else if (addr)
730 wpa_printf(MSG_DEBUG, "hostapd_logger: STA " MACSTR " - %s",
731 MAC2STR(addr), buf);
a875087d
JL
732 else
733 wpa_printf(MSG_DEBUG, "hostapd_logger: %s", buf);
734 os_free(buf);
735}
736#endif /* CONFIG_NO_HOSTAPD_LOGGER */