1:
2: /*
3: * log.c
4: *
5: * Written by Toshiharu OHNO <tony-o@iij.ad.jp>
6: * Copyright (c) 1993, Internet Initiative Japan, Inc. All rights reserved.
7: * See ``COPYRIGHT.iij''
8: *
9: * Rewritten by Archie Cobbs <archie@freebsd.org>
10: * Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
11: * See ``COPYRIGHT.whistle''
12: */
13:
14: #include "ppp.h"
15: #ifdef SYSLOG_FACILITY
16: #include <syslog.h>
17: #endif
18:
19: /*
20: * DEFINITIONS
21: */
22:
23: #define DUMP_BYTES_PER_LINE 16
24: #define ROUNDUP(x,r) (((x)%(r))?((x)+((r)-((x)%(r)))):(x))
25: #define MAX_LOG_LINE 500
26:
27: /* Log option descriptor */
28:
29: struct logopt
30: {
31: int mask;
32: const char *name;
33: const char *desc;
34: };
35:
36: /*
37: * GLOBAL VARIABLES
38: */
39:
40: int gLogOptions = LG_DEFAULT_OPT | LG_ALWAYS;
41: #ifdef SYSLOG_FACILITY
42: char gSysLogIdent[32];
43: #endif
44:
45: /*
46: * INTERNAL VARIABLES
47: */
48:
49: #define ADD_OPT(x,d) { LG_ ##x, #x, d },
50:
51: static struct logopt LogOptionList[] =
52: {
53: #ifdef LG_BUND
54: ADD_OPT(BUND, "Bundle events")
55: #endif
56: #ifdef LG_BUND2
57: ADD_OPT(BUND2, "Detailed bundle events")
58: #endif
59: #ifdef LG_LINK
60: ADD_OPT(LINK, "Link events")
61: #endif
62: #ifdef LG_REP
63: ADD_OPT(REP, "Repeater events")
64: #endif
65: #ifdef LG_LCP
66: ADD_OPT(LCP, "LCP negotiation")
67: #endif
68: #ifdef LG_LCP2
69: ADD_OPT(LCP2, "LCP events and debugging")
70: #endif
71: #ifdef LG_AUTH
72: ADD_OPT(AUTH, "Link authentication events")
73: #endif
74: #ifdef LG_AUTH2
75: ADD_OPT(AUTH2, "Link authentication details")
76: #endif
77: #ifdef LG_IPCP
78: ADD_OPT(IPCP, "IPCP negotiation")
79: #endif
80: #ifdef LG_IPCP2
81: ADD_OPT(IPCP2, "IPCP events and debugging")
82: #endif
83: #ifdef LG_IPV6CP
84: ADD_OPT(IPV6CP, "IPV6CP negotiation")
85: #endif
86: #ifdef LG_IPV6CP2
87: ADD_OPT(IPV6CP2, "IPV6CP events and debugging")
88: #endif
89: #ifdef LG_CCP
90: ADD_OPT(CCP, "CCP negotiation")
91: #endif
92: #ifdef LG_CCP2
93: ADD_OPT(CCP2, "CCP events and debugging")
94: #endif
95: #ifdef LG_ECP
96: ADD_OPT(ECP, "ECP negotiation")
97: #endif
98: #ifdef LG_ECP2
99: ADD_OPT(ECP2, "ECP events and debugging")
100: #endif
101: #ifdef LG_FSM
102: ADD_OPT(FSM, "All FSM events (except echo & reset)")
103: #endif
104: #ifdef LG_ECHO
105: ADD_OPT(ECHO, "Echo/reply events for all automata")
106: #endif
107: #ifdef LG_PHYS
108: ADD_OPT(PHYS, "Physical layer events")
109: #endif
110: #ifdef LG_PHYS2
111: ADD_OPT(PHYS2, "Physical layer debug")
112: #endif
113: #ifdef LG_PHYS3
114: ADD_OPT(PHYS3, "Physical layer control packet dump")
115: #endif
116: #ifdef LG_CHAT
117: ADD_OPT(CHAT, "Modem chat script")
118: #endif
119: #ifdef LG_CHAT2
120: ADD_OPT(CHAT2, "Chat script extra debugging output")
121: #endif
122: #ifdef LG_IFACE
123: ADD_OPT(IFACE, "IP interface and route management")
124: #endif
125: #ifdef LG_IFACE2
126: ADD_OPT(IFACE2, "IP interface and route management debug")
127: #endif
128: #ifdef LG_FRAME
129: ADD_OPT(FRAME, "Dump all incoming & outgoing frames")
130: #endif
131: #ifdef LG_RADIUS
132: ADD_OPT(RADIUS, "Radius authentication events")
133: #endif
134: #ifdef LG_RADIUS2
135: ADD_OPT(RADIUS2, "Radius authentication debug")
136: #endif
137: #ifdef LG_CONSOLE
138: ADD_OPT(CONSOLE, "Console events")
139: #endif
140: #ifdef LG_EVENTS
141: ADD_OPT(EVENTS, "Daemon events debug")
142: #endif
143: };
144:
145: #define NUM_LOG_LEVELS (sizeof(LogOptionList) / sizeof(*LogOptionList))
146:
147: /*
148: * LogOpen()
149: */
150:
151: int
152: LogOpen(void)
153: {
154: #ifdef SYSLOG_FACILITY
155: if (!*gSysLogIdent)
156: strcpy(gSysLogIdent, "mpd");
157: openlog(gSysLogIdent, 0, LOG_DAEMON);
158: #endif
159: return(0);
160: }
161:
162: /*
163: * LogClose()
164: */
165:
166: void
167: LogClose(void)
168: {
169: #ifdef SYSLOG_FACILITY
170: closelog();
171: #endif
172: }
173:
174: /*
175: * LogCommand()
176: */
177:
178: int
179: LogCommand(Context ctx, int ac, const char *const av[], const void *arg)
180: {
181: u_int k;
182: int bits, add;
183: const char *s;
184:
185: (void)arg;
186: if (ac == 0) {
187: #define LG_FMT " %-12s %-10s %s\r\n"
188:
189: Printf(LG_FMT, "Log Option", "Enabled", "Description");
190: Printf(LG_FMT, "----------", "-------", "-----------");
191: for (k = 0; k < NUM_LOG_LEVELS; k++) {
192: Printf(" " LG_FMT, LogOptionList[k].name,
193: (gLogOptions & LogOptionList[k].mask) ? "Yes" : "No",
194: LogOptionList[k].desc);
195: }
196: return(0);
197: }
198:
199: while (ac--) {
200: s = *av;
201: switch (*s) {
202: case '+':
203: s++;
204: default:
205: add = TRUE;
206: break;
207: case '-':
208: add = FALSE;
209: s++;
210: break;
211: }
212: for (k = 0;
213: k < NUM_LOG_LEVELS && strcasecmp(s, LogOptionList[k].name);
214: k++);
215: if (k < NUM_LOG_LEVELS)
216: bits = LogOptionList[k].mask;
217: else {
218: if (!strcasecmp(s, "all")) {
219: for (bits = k = 0; k < NUM_LOG_LEVELS; k++)
220: bits |= LogOptionList[k].mask;
221: } else {
222: Printf("\"%s\" is unknown. Enter \"log\" for list.\r\n", s);
223: bits = 0;
224: }
225: }
226: if (add)
227: gLogOptions |= bits;
228: else
229: gLogOptions &= ~bits;
230: av++;
231: }
232: return(0);
233: }
234:
235: /*
236: * LogPrintf()
237: *
238: * The way to print something to the log
239: */
240:
241: void
242: LogPrintf(const char *fmt, ...)
243: {
244: va_list args;
245:
246: va_start(args, fmt);
247: vLogPrintf(fmt, args);
248: va_end(args);
249: }
250:
251: void
252: vLogPrintf(const char *fmt, va_list args) NO_THREAD_SAFETY_ANALYSIS
253: {
254: if (!SLIST_EMPTY(&gConsole.sessions)) {
255: char buf[1000];
256: ConsoleSession s;
257:
258: vsnprintf(buf, sizeof(buf), fmt, args);
259: #ifdef SYSLOG_FACILITY
260: syslog(LOG_INFO, "%s", buf);
261: #endif
262: pthread_cleanup_push(ConsoleCancelCleanup, gConsole.lock);
263: RWLOCK_RDLOCK(gConsole.lock);
264: SLIST_FOREACH(s, &gConsole.sessions, next) {
265: if (Enabled(&s->options, CONSOLE_LOGGING))
266: s->write(s, "%s\r\n", buf);
267: }
268: pthread_cleanup_pop(1);
269: #ifdef SYSLOG_FACILITY
270: } else {
271: vsyslog(LOG_INFO, fmt, args);
272: #endif
273: }
274: }
275:
276: /*
277: * LogPrintf2()
278: *
279: * The way to print something to the log
280: */
281:
282: void
283: LogPrintf2(const char *fmt, ...)
284: {
285: va_list args;
286:
287: va_start(args, fmt);
288: #ifdef SYSLOG_FACILITY
289: vsyslog(LOG_INFO, fmt, args);
290: #endif
291: va_end(args);
292: }
293:
294: /*
295: * LogDumpBp2()
296: *
297: * Dump the contents of an Mbuf to the log
298: */
299:
300: void
301: LogDumpBp2(Mbuf bp, const char *fmt, ...)
302: {
303: int k;
304: unsigned total;
305: u_char bytes[DUMP_BYTES_PER_LINE];
306: char line[128];
307: int linelen;
308: va_list ap;
309:
310: /* Do header */
311: va_start(ap, fmt);
312: vLogPrintf(fmt, ap);
313: va_end(ap);
314:
315: /* Do data */
316: line[0]=' ';
317: line[1]=' ';
318: line[2]=' ';
319: line[3]=0;
320: linelen=3;
321:
322: total = 0;
323: if (bp) {
324: int start, last = 0;
325: unsigned stop;
326:
327: stop = ROUNDUP(total + MBLEN(bp), DUMP_BYTES_PER_LINE);
328: for (start = total; total < stop; ) {
329: u_int const byte = (MBDATAU(bp))[total - start];
330:
331: if (total < start + MBLEN(bp)) {
332: sprintf(line+linelen, " %02x", byte);
333: last = total % DUMP_BYTES_PER_LINE;
334: } else
335: sprintf(line+linelen, " ");
336: linelen+=3;
337:
338: bytes[total % DUMP_BYTES_PER_LINE] = byte;
339: total++;
340:
341: if (total % DUMP_BYTES_PER_LINE == 0) {
342: snprintf(line+linelen, sizeof(line), " ");
343: linelen+=2;
344: for (k = 0; k <= last; k++) {
345: line[linelen++] = isgraph(bytes[k]) ? bytes[k] : '.';
346: line[linelen] = 0;
347: }
348: LogPrintf("%s",line);
349: line[0]=' ';
350: line[1]=' ';
351: line[2]=' ';
352: line[3]=0;
353: linelen=3;
354: }
355: }
356: }
357: }
358:
359: /*
360: * LogDumpBuf2()
361: *
362: * Dump the contents of a buffer to the log
363: */
364:
365: void
366: LogDumpBuf2(const u_char *buf, int count, const char *fmt, ...)
367: {
368: int k, stop, total;
369: char line[128];
370: int linelen;
371: va_list ap;
372:
373: /* Do header */
374: va_start(ap, fmt);
375: vLogPrintf(fmt, ap);
376: va_end(ap);
377:
378: /* Do data */
379: line[0]=' ';
380: line[1]=' ';
381: line[2]=' ';
382: line[3]=0;
383: linelen=3;
384:
385: stop = ROUNDUP(count, DUMP_BYTES_PER_LINE);
386: for (total = 0; total < stop; ) {
387: if (total < count)
388: sprintf(line+linelen, " %02x", buf[total]);
389: else
390: sprintf(line+linelen, " ");
391: linelen+=3;
392: total++;
393: if (total % DUMP_BYTES_PER_LINE == 0) {
394: snprintf(line+linelen, sizeof(line), " ");
395: linelen+=2;
396: for (k = total - DUMP_BYTES_PER_LINE; k < total && k < count; k++) {
397: line[linelen++] = isgraph(buf[k]) ? buf[k] : '.';
398: line[linelen] = 0;
399: }
400: LogPrintf("%s",line);
401: line[0]=' ';
402: line[1]=' ';
403: line[2]=' ';
404: line[3]=0;
405: linelen=3;
406: }
407: }
408: }
409:
410: /*
411: * Perror()
412: */
413:
414: void
415: Perror(const char *fmt, ...)
416: {
417: va_list args;
418: char buf[200];
419:
420: va_start(args, fmt);
421: vsnprintf(buf, sizeof(buf), fmt, args);
422: va_end(args);
423: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
424: ": %s", strerror(errno));
425: Log(LG_ERR, ("%s", buf));
426: }
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