FreeBSD-5.3/usr.sbin/ppp/log.c
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/ppp/log.c,v 1.53 2004/07/17 01:07:52 brian Exp $
*/
#include <sys/types.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <termios.h>
#include "defs.h"
#include "command.h"
#include "mbuf.h"
#include "log.h"
#include "descriptor.h"
#include "prompt.h"
static const char *const LogNames[] = {
"Async",
"CBCP",
"CCP",
"Chat",
"Command",
"Connect",
"Debug",
"DNS",
"Filter", /* Log discarded packets */
"HDLC",
"ID0",
"IPCP",
"IPV6CP",
"LCP",
"LQM",
"Phase",
"Physical",
"Radius",
"Sync",
"TCP/IP",
"Timer",
"Tun",
"Warning",
"Error",
"Alert"
};
#define MSK(n) (1<<((n)-1))
static u_long LogMask = MSK(LogPHASE);
static u_long LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
static int LogTunno = -1;
static struct prompt *promptlist; /* Where to log local stuff */
struct prompt *log_PromptContext;
int log_PromptListChanged;
struct prompt *
log_PromptList()
{
return promptlist;
}
void
log_RegisterPrompt(struct prompt *prompt)
{
prompt->next = promptlist;
promptlist = prompt;
prompt->active = 1;
log_DiscardAllLocal(&prompt->logmask);
}
void
log_ActivatePrompt(struct prompt *prompt)
{
prompt->active = 1;
LogMaskLocal |= prompt->logmask;
}
static void
LogSetMaskLocal(void)
{
struct prompt *p;
LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
for (p = promptlist; p; p = p->next)
LogMaskLocal |= p->logmask;
}
void
log_DeactivatePrompt(struct prompt *prompt)
{
if (prompt->active) {
prompt->active = 0;
LogSetMaskLocal();
}
}
void
log_UnRegisterPrompt(struct prompt *prompt)
{
if (prompt) {
struct prompt **p;
for (p = &promptlist; *p; p = &(*p)->next)
if (*p == prompt) {
*p = prompt->next;
prompt->next = NULL;
break;
}
LogSetMaskLocal();
log_PromptListChanged++;
}
}
void
log_DestroyPrompts(struct server *s)
{
struct prompt *p, *pn, *pl;
p = promptlist;
pl = NULL;
while (p) {
pn = p->next;
if (s && p->owner == s) {
if (pl)
pl->next = p->next;
else
promptlist = p->next;
p->next = NULL;
prompt_Destroy(p, 1);
} else
pl = p;
p = pn;
}
}
void
log_DisplayPrompts()
{
struct prompt *p;
for (p = promptlist; p; p = p->next)
prompt_Required(p);
}
void
log_WritePrompts(struct datalink *dl, const char *fmt,...)
{
va_list ap;
struct prompt *p;
va_start(ap, fmt);
for (p = promptlist; p; p = p->next)
if (prompt_IsTermMode(p, dl))
prompt_vPrintf(p, fmt, ap);
va_end(ap);
}
void
log_SetTtyCommandMode(struct datalink *dl)
{
struct prompt *p;
for (p = promptlist; p; p = p->next)
if (prompt_IsTermMode(p, dl))
prompt_TtyCommandMode(p);
}
static int
syslogLevel(int lev)
{
switch (lev) {
case LogLOG:
return LOG_INFO;
case LogDEBUG:
case LogTIMER:
return LOG_DEBUG;
case LogWARN:
return LOG_WARNING;
case LogERROR:
return LOG_ERR;
case LogALERT:
return LOG_ALERT;
}
return lev >= LogMIN && lev <= LogMAX ? LOG_INFO : 0;
}
const char *
log_Name(int id)
{
if (id == LogLOG)
return "LOG";
return id < LogMIN || id > LogMAX ? "Unknown" : LogNames[id - 1];
}
void
log_Keep(int id)
{
if (id >= LogMIN && id <= LogMAXCONF)
LogMask |= MSK(id);
}
void
log_KeepLocal(int id, u_long *mask)
{
if (id >= LogMIN && id <= LogMAXCONF) {
LogMaskLocal |= MSK(id);
*mask |= MSK(id);
}
}
void
log_Discard(int id)
{
if (id >= LogMIN && id <= LogMAXCONF)
LogMask &= ~MSK(id);
}
void
log_DiscardLocal(int id, u_long *mask)
{
if (id >= LogMIN && id <= LogMAXCONF) {
*mask &= ~MSK(id);
LogSetMaskLocal();
}
}
void
log_DiscardAll()
{
LogMask = 0;
}
void
log_DiscardAllLocal(u_long *mask)
{
*mask = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN);
LogSetMaskLocal();
}
int
log_IsKept(int id)
{
if (id == LogLOG)
return LOG_KEPT_SYSLOG;
if (id < LogMIN || id > LogMAX)
return 0;
if (id > LogMAXCONF)
return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG;
return ((LogMaskLocal & MSK(id)) ? LOG_KEPT_LOCAL : 0) |
((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0);
}
int
log_IsKeptLocal(int id, u_long mask)
{
if (id < LogMIN || id > LogMAX)
return 0;
if (id > LogMAXCONF)
return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG;
return ((mask & MSK(id)) ? LOG_KEPT_LOCAL : 0) |
((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0);
}
void
log_Open(const char *Name)
{
openlog(Name, LOG_PID, LOG_DAEMON);
}
void
log_SetTun(int tunno)
{
LogTunno = tunno;
}
void
log_Close()
{
closelog();
LogTunno = -1;
}
void
log_Printf(int lev, const char *fmt,...)
{
va_list ap;
struct prompt *prompt;
if (log_IsKept(lev)) {
char nfmt[200];
va_start(ap, fmt);
if (promptlist && (log_IsKept(lev) & LOG_KEPT_LOCAL)) {
if ((log_IsKept(LogTUN) & LOG_KEPT_LOCAL) && LogTunno != -1)
snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME,
LogTunno, log_Name(lev), fmt);
else
snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt);
if (log_PromptContext && lev == LogWARN)
/* Warnings just go to the current prompt */
prompt_vPrintf(log_PromptContext, nfmt, ap);
else for (prompt = promptlist; prompt; prompt = prompt->next)
if (lev > LogMAXCONF || (prompt->logmask & MSK(lev)))
prompt_vPrintf(prompt, nfmt, ap);
}
va_end(ap);
va_start(ap, fmt);
if ((log_IsKept(lev) & LOG_KEPT_SYSLOG) &&
(lev != LogWARN || !log_PromptContext)) {
if ((log_IsKept(LogTUN) & LOG_KEPT_SYSLOG) && LogTunno != -1)
snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME,
LogTunno, log_Name(lev), fmt);
else
snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt);
vsyslog(syslogLevel(lev), nfmt, ap);
}
va_end(ap);
}
}
void
log_DumpBp(int lev, const char *hdr, const struct mbuf *bp)
{
if (log_IsKept(lev)) {
char buf[68];
char *b, *c;
const u_char *ptr;
int f;
if (hdr && *hdr)
log_Printf(lev, "%s\n", hdr);
b = buf;
c = b + 50;
do {
f = bp->m_len;
ptr = CONST_MBUF_CTOP(bp);
while (f--) {
sprintf(b, " %02x", (int) *ptr);
*c++ = isprint(*ptr) ? *ptr : '.';
ptr++;
b += 3;
if (b == buf + 48) {
memset(b, ' ', 2);
*c = '\0';
log_Printf(lev, "%s\n", buf);
b = buf;
c = b + 50;
}
}
} while ((bp = bp->m_next) != NULL);
if (b > buf) {
memset(b, ' ', 50 - (b - buf));
*c = '\0';
log_Printf(lev, "%s\n", buf);
}
}
}
void
log_DumpBuff(int lev, const char *hdr, const u_char *ptr, int n)
{
if (log_IsKept(lev)) {
char buf[68];
char *b, *c;
if (hdr && *hdr)
log_Printf(lev, "%s\n", hdr);
while (n > 0) {
b = buf;
c = b + 50;
for (b = buf; b != buf + 48 && n--; b += 3, ptr++) {
sprintf(b, " %02x", (int) *ptr);
*c++ = isprint(*ptr) ? *ptr : '.';
}
memset(b, ' ', 50 - (b - buf));
*c = '\0';
log_Printf(lev, "%s\n", buf);
}
}
}
int
log_ShowLevel(struct cmdargs const *arg)
{
int i;
prompt_Printf(arg->prompt, "Log: ");
for (i = LogMIN; i <= LogMAX; i++)
if (log_IsKept(i) & LOG_KEPT_SYSLOG)
prompt_Printf(arg->prompt, " %s", log_Name(i));
prompt_Printf(arg->prompt, "\nLocal:");
for (i = LogMIN; i <= LogMAX; i++)
if (log_IsKeptLocal(i, arg->prompt->logmask) & LOG_KEPT_LOCAL)
prompt_Printf(arg->prompt, " %s", log_Name(i));
prompt_Printf(arg->prompt, "\n");
return 0;
}
int
log_SetLevel(struct cmdargs const *arg)
{
int i, res, argc, local;
char const *const *argv, *argp;
argc = arg->argc - arg->argn;
argv = arg->argv + arg->argn;
res = 0;
if (argc == 0 || strcasecmp(argv[0], "local"))
local = 0;
else {
if (arg->prompt == NULL) {
log_Printf(LogWARN, "set log local: Only available on the"
" command line\n");
return 1;
}
argc--;
argv++;
local = 1;
}
if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-')) {
if (local)
log_DiscardAllLocal(&arg->prompt->logmask);
else
log_DiscardAll();
}
while (argc--) {
argp = **argv == '+' || **argv == '-' ? *argv + 1 : *argv;
/* Special case 'all' */
if (strcasecmp(argp, "all") == 0) {
if (**argv == '-') {
if (local)
for (i = LogMIN; i <= LogMAX; i++)
log_DiscardLocal(i, &arg->prompt->logmask);
else
for (i = LogMIN; i <= LogMAX; i++)
log_Discard(i);
} else if (local)
for (i = LogMIN; i <= LogMAX; i++)
log_KeepLocal(i, &arg->prompt->logmask);
else
for (i = LogMIN; i <= LogMAX; i++)
log_Keep(i);
argv++;
continue;
}
for (i = LogMIN; i <= LogMAX; i++)
if (strcasecmp(argp, log_Name(i)) == 0) {
if (**argv == '-') {
if (local)
log_DiscardLocal(i, &arg->prompt->logmask);
else
log_Discard(i);
} else if (local)
log_KeepLocal(i, &arg->prompt->logmask);
else
log_Keep(i);
break;
}
if (i > LogMAX) {
log_Printf(LogWARN, "%s: Invalid log value\n", argp);
res = -1;
}
argv++;
}
return res;
}
int
log_ShowWho(struct cmdargs const *arg)
{
struct prompt *p;
for (p = promptlist; p; p = p->next) {
prompt_Printf(arg->prompt, "%s (%s)", p->src.type, p->src.from);
if (p == arg->prompt)
prompt_Printf(arg->prompt, " *");
if (!p->active)
prompt_Printf(arg->prompt, " ^Z");
prompt_Printf(arg->prompt, "\n");
}
return 0;
}