2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/types.h>
44 #include "descriptor.h"
47 static const char *const LogNames[] = {
56 "Filter", /* Log discarded packets */
75 #define MSK(n) (1<<((n)-1))
77 static u_long LogMask = MSK(LogPHASE);
78 static u_long LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
79 static int LogTunno = -1;
80 static const char *LogIfaceName;
81 static struct prompt *promptlist; /* Where to log local stuff */
82 struct prompt *log_PromptContext;
83 int log_PromptListChanged;
92 log_RegisterPrompt(struct prompt *prompt)
94 prompt->next = promptlist;
97 log_DiscardAllLocal(&prompt->logmask);
101 log_ActivatePrompt(struct prompt *prompt)
104 LogMaskLocal |= prompt->logmask;
108 LogSetMaskLocal(void)
112 LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
113 for (p = promptlist; p; p = p->next)
114 LogMaskLocal |= p->logmask;
118 log_DeactivatePrompt(struct prompt *prompt)
120 if (prompt->active) {
127 log_UnRegisterPrompt(struct prompt *prompt)
132 for (p = &promptlist; *p; p = &(*p)->next)
139 log_PromptListChanged++;
144 log_DestroyPrompts(struct server *s)
146 struct prompt *p, *pn, *pl;
152 if (s && p->owner == s) {
156 promptlist = p->next;
158 prompt_Destroy(p, 1);
170 for (p = promptlist; p; p = p->next)
175 log_WritePrompts(struct datalink *dl, const char *fmt,...)
181 for (p = promptlist; p; p = p->next)
182 if (prompt_IsTermMode(p, dl))
183 prompt_vPrintf(p, fmt, ap);
188 log_SetTtyCommandMode(struct datalink *dl)
192 for (p = promptlist; p; p = p->next)
193 if (prompt_IsTermMode(p, dl))
194 prompt_TtyCommandMode(p);
213 return lev >= LogMIN && lev <= LogMAX ? LOG_INFO : 0;
221 return id < LogMIN || id > LogMAX ? "Unknown" : LogNames[id - 1];
227 if (id >= LogMIN && id <= LogMAXCONF)
232 log_KeepLocal(int id, u_long *mask)
234 if (id >= LogMIN && id <= LogMAXCONF) {
235 LogMaskLocal |= MSK(id);
243 if (id >= LogMIN && id <= LogMAXCONF)
248 log_DiscardLocal(int id, u_long *mask)
250 if (id >= LogMIN && id <= LogMAXCONF) {
263 log_DiscardAllLocal(u_long *mask)
265 *mask = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
273 return LOG_KEPT_SYSLOG;
274 if (id < LogMIN || id > LogMAX)
277 return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG;
279 return ((LogMaskLocal & MSK(id)) ? LOG_KEPT_LOCAL : 0) |
280 ((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0);
284 log_IsKeptLocal(int id, u_long mask)
286 if (id < LogMIN || id > LogMAX)
289 return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG;
291 return ((mask & MSK(id)) ? LOG_KEPT_LOCAL : 0) |
292 ((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0);
296 log_Open(const char *Name)
298 openlog(Name, LOG_PID, LOG_DAEMON);
302 log_SetTun(int tunno, const char *ifaceName)
305 LogIfaceName = ifaceName;
317 log_Printf(int lev, const char *fmt,...)
320 struct prompt *prompt;
322 if (log_IsKept(lev)) {
326 if (promptlist && (log_IsKept(lev) & LOG_KEPT_LOCAL)) {
327 if ((log_IsKept(LogTUN) & LOG_KEPT_LOCAL) && LogTunno != -1) {
329 snprintf(nfmt, sizeof nfmt, "%s%d(%s): %s: %s", TUN_NAME,
330 LogTunno, LogIfaceName, log_Name(lev), fmt);
332 snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME,
333 LogTunno, log_Name(lev), fmt);
335 snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt);
337 if (log_PromptContext && lev == LogWARN)
338 /* Warnings just go to the current prompt */
339 prompt_vPrintf(log_PromptContext, nfmt, ap);
340 else for (prompt = promptlist; prompt; prompt = prompt->next)
341 if (lev > LogMAXCONF || (prompt->logmask & MSK(lev)))
342 prompt_vPrintf(prompt, nfmt, ap);
347 if ((log_IsKept(lev) & LOG_KEPT_SYSLOG) &&
348 (lev != LogWARN || !log_PromptContext)) {
349 if ((log_IsKept(LogTUN) & LOG_KEPT_SYSLOG) && LogTunno != -1) {
351 snprintf(nfmt, sizeof nfmt, "%s%d(%s): %s: %s", TUN_NAME,
352 LogTunno, LogIfaceName, log_Name(lev), fmt);
354 snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME,
355 LogTunno, log_Name(lev), fmt);
357 snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt);
358 vsyslog(syslogLevel(lev), nfmt, ap);
365 log_DumpBp(int lev, const char *hdr, const struct mbuf *bp)
367 if (log_IsKept(lev)) {
374 log_Printf(lev, "%s\n", hdr);
380 ptr = CONST_MBUF_CTOP(bp);
382 sprintf(b, " %02x", (int) *ptr);
383 *c++ = isprint(*ptr) ? *ptr : '.';
389 log_Printf(lev, "%s\n", buf);
394 } while ((bp = bp->m_next) != NULL);
397 memset(b, ' ', 50 - (b - buf));
399 log_Printf(lev, "%s\n", buf);
405 log_DumpBuff(int lev, const char *hdr, const u_char *ptr, int n)
407 if (log_IsKept(lev)) {
412 log_Printf(lev, "%s\n", hdr);
416 for (b = buf; b != buf + 48 && n--; b += 3, ptr++) {
417 sprintf(b, " %02x", (int) *ptr);
418 *c++ = isprint(*ptr) ? *ptr : '.';
420 memset(b, ' ', 50 - (b - buf));
422 log_Printf(lev, "%s\n", buf);
428 log_ShowLevel(struct cmdargs const *arg)
432 prompt_Printf(arg->prompt, "Log: ");
433 for (i = LogMIN; i <= LogMAX; i++)
434 if (log_IsKept(i) & LOG_KEPT_SYSLOG)
435 prompt_Printf(arg->prompt, " %s", log_Name(i));
437 prompt_Printf(arg->prompt, "\nLocal:");
438 for (i = LogMIN; i <= LogMAX; i++)
439 if (log_IsKeptLocal(i, arg->prompt->logmask) & LOG_KEPT_LOCAL)
440 prompt_Printf(arg->prompt, " %s", log_Name(i));
442 prompt_Printf(arg->prompt, "\n");
448 log_SetLevel(struct cmdargs const *arg)
450 int i, res, argc, local;
451 char const *const *argv, *argp;
453 argc = arg->argc - arg->argn;
454 argv = arg->argv + arg->argn;
457 if (argc == 0 || strcasecmp(argv[0], "local"))
460 if (arg->prompt == NULL) {
461 log_Printf(LogWARN, "set log local: Only available on the"
470 if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-')) {
472 log_DiscardAllLocal(&arg->prompt->logmask);
478 argp = **argv == '+' || **argv == '-' ? *argv + 1 : *argv;
479 /* Special case 'all' */
480 if (strcasecmp(argp, "all") == 0) {
483 for (i = LogMIN; i <= LogMAX; i++)
484 log_DiscardLocal(i, &arg->prompt->logmask);
486 for (i = LogMIN; i <= LogMAX; i++)
489 for (i = LogMIN; i <= LogMAX; i++)
490 log_KeepLocal(i, &arg->prompt->logmask);
492 for (i = LogMIN; i <= LogMAX; i++)
497 for (i = LogMIN; i <= LogMAX; i++)
498 if (strcasecmp(argp, log_Name(i)) == 0) {
501 log_DiscardLocal(i, &arg->prompt->logmask);
505 log_KeepLocal(i, &arg->prompt->logmask);
511 log_Printf(LogWARN, "%s: Invalid log value\n", argp);
520 log_ShowWho(struct cmdargs const *arg)
524 for (p = promptlist; p; p = p->next) {
525 prompt_Printf(arg->prompt, "%s (%s)", p->src.type, p->src.from);
526 if (p == arg->prompt)
527 prompt_Printf(arg->prompt, " *");
529 prompt_Printf(arg->prompt, " ^Z");
530 prompt_Printf(arg->prompt, "\n");