source: trunk/server/source4/heimdal/lib/krb5/log.c

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 12.4 KB
Line 
1/*
2 * Copyright (c) 1997-2006 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include "krb5_locl.h"
37#include <vis.h>
38
39struct facility {
40 int min;
41 int max;
42 krb5_log_log_func_t log_func;
43 krb5_log_close_func_t close_func;
44 void *data;
45};
46
47static struct facility*
48log_realloc(krb5_log_facility *f)
49{
50 struct facility *fp;
51 fp = realloc(f->val, (f->len + 1) * sizeof(*f->val));
52 if(fp == NULL)
53 return NULL;
54 f->len++;
55 f->val = fp;
56 fp += f->len - 1;
57 return fp;
58}
59
60struct s2i {
61 const char *s;
62 int val;
63};
64
65#define L(X) { #X, LOG_ ## X }
66
67static struct s2i syslogvals[] = {
68 L(EMERG),
69 L(ALERT),
70 L(CRIT),
71 L(ERR),
72 L(WARNING),
73 L(NOTICE),
74 L(INFO),
75 L(DEBUG),
76
77 L(AUTH),
78#ifdef LOG_AUTHPRIV
79 L(AUTHPRIV),
80#endif
81#ifdef LOG_CRON
82 L(CRON),
83#endif
84 L(DAEMON),
85#ifdef LOG_FTP
86 L(FTP),
87#endif
88 L(KERN),
89 L(LPR),
90 L(MAIL),
91#ifdef LOG_NEWS
92 L(NEWS),
93#endif
94 L(SYSLOG),
95 L(USER),
96#ifdef LOG_UUCP
97 L(UUCP),
98#endif
99 L(LOCAL0),
100 L(LOCAL1),
101 L(LOCAL2),
102 L(LOCAL3),
103 L(LOCAL4),
104 L(LOCAL5),
105 L(LOCAL6),
106 L(LOCAL7),
107 { NULL, -1 }
108};
109
110static int
111find_value(const char *s, struct s2i *table)
112{
113 while(table->s && strcasecmp(table->s, s))
114 table++;
115 return table->val;
116}
117
118KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
119krb5_initlog(krb5_context context,
120 const char *program,
121 krb5_log_facility **fac)
122{
123 krb5_log_facility *f = calloc(1, sizeof(*f));
124 if(f == NULL) {
125 krb5_set_error_message(context, ENOMEM,
126 N_("malloc: out of memory", ""));
127 return ENOMEM;
128 }
129 f->program = strdup(program);
130 if(f->program == NULL){
131 free(f);
132 krb5_set_error_message(context, ENOMEM,
133 N_("malloc: out of memory", ""));
134 return ENOMEM;
135 }
136 *fac = f;
137 return 0;
138}
139
140KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
141krb5_addlog_func(krb5_context context,
142 krb5_log_facility *fac,
143 int min,
144 int max,
145 krb5_log_log_func_t log_func,
146 krb5_log_close_func_t close_func,
147 void *data)
148{
149 struct facility *fp = log_realloc(fac);
150 if(fp == NULL) {
151 krb5_set_error_message(context, ENOMEM,
152 N_("malloc: out of memory", ""));
153 return ENOMEM;
154 }
155 fp->min = min;
156 fp->max = max;
157 fp->log_func = log_func;
158 fp->close_func = close_func;
159 fp->data = data;
160 return 0;
161}
162
163
164struct _heimdal_syslog_data{
165 int priority;
166};
167
168static void KRB5_CALLCONV
169log_syslog(const char *timestr,
170 const char *msg,
171 void *data)
172
173{
174 struct _heimdal_syslog_data *s = data;
175 syslog(s->priority, "%s", msg);
176}
177
178static void KRB5_CALLCONV
179close_syslog(void *data)
180{
181 free(data);
182 closelog();
183}
184
185static krb5_error_code
186open_syslog(krb5_context context,
187 krb5_log_facility *facility, int min, int max,
188 const char *sev, const char *fac)
189{
190 struct _heimdal_syslog_data *sd = malloc(sizeof(*sd));
191 int i;
192
193 if(sd == NULL) {
194 krb5_set_error_message(context, ENOMEM,
195 N_("malloc: out of memory", ""));
196 return ENOMEM;
197 }
198 i = find_value(sev, syslogvals);
199 if(i == -1)
200 i = LOG_ERR;
201 sd->priority = i;
202 i = find_value(fac, syslogvals);
203 if(i == -1)
204 i = LOG_AUTH;
205 sd->priority |= i;
206 roken_openlog(facility->program, LOG_PID | LOG_NDELAY, i);
207 return krb5_addlog_func(context, facility, min, max,
208 log_syslog, close_syslog, sd);
209}
210
211struct file_data{
212 const char *filename;
213 const char *mode;
214 FILE *fd;
215 int keep_open;
216};
217
218static void KRB5_CALLCONV
219log_file(const char *timestr,
220 const char *msg,
221 void *data)
222{
223 struct file_data *f = data;
224 char *msgclean;
225 size_t len = strlen(msg);
226 if(f->keep_open == 0)
227 f->fd = fopen(f->filename, f->mode);
228 if(f->fd == NULL)
229 return;
230 /* make sure the log doesn't contain special chars */
231 msgclean = malloc((len + 1) * 4);
232 if (msgclean == NULL)
233 goto out;
234 strvisx(msgclean, rk_UNCONST(msg), len, VIS_OCTAL);
235 fprintf(f->fd, "%s %s\n", timestr, msgclean);
236 free(msgclean);
237 out:
238 if(f->keep_open == 0) {
239 fclose(f->fd);
240 f->fd = NULL;
241 }
242}
243
244static void KRB5_CALLCONV
245close_file(void *data)
246{
247 struct file_data *f = data;
248 if(f->keep_open && f->filename)
249 fclose(f->fd);
250 free(data);
251}
252
253static krb5_error_code
254open_file(krb5_context context, krb5_log_facility *fac, int min, int max,
255 const char *filename, const char *mode, FILE *f, int keep_open)
256{
257 struct file_data *fd = malloc(sizeof(*fd));
258 if(fd == NULL) {
259 krb5_set_error_message(context, ENOMEM,
260 N_("malloc: out of memory", ""));
261 return ENOMEM;
262 }
263 fd->filename = filename;
264 fd->mode = mode;
265 fd->fd = f;
266 fd->keep_open = keep_open;
267
268 return krb5_addlog_func(context, fac, min, max, log_file, close_file, fd);
269}
270
271
272
273KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
274krb5_addlog_dest(krb5_context context, krb5_log_facility *f, const char *orig)
275{
276 krb5_error_code ret = 0;
277 int min = 0, max = -1, n;
278 char c;
279 const char *p = orig;
280
281 n = sscanf(p, "%d%c%d/", &min, &c, &max);
282 if(n == 2){
283 if(c == '/') {
284 if(min < 0){
285 max = -min;
286 min = 0;
287 }else{
288 max = min;
289 }
290 }
291 }
292 if(n){
293 p = strchr(p, '/');
294 if(p == NULL) {
295 krb5_set_error_message(context, HEIM_ERR_LOG_PARSE,
296 N_("failed to parse \"%s\"", ""), orig);
297 return HEIM_ERR_LOG_PARSE;
298 }
299 p++;
300 }
301 if(strcmp(p, "STDERR") == 0){
302 ret = open_file(context, f, min, max, NULL, NULL, stderr, 1);
303 }else if(strcmp(p, "CONSOLE") == 0){
304 ret = open_file(context, f, min, max, "/dev/console", "w", NULL, 0);
305 }else if(strncmp(p, "FILE", 4) == 0 && (p[4] == ':' || p[4] == '=')){
306 char *fn;
307 FILE *file = NULL;
308 int keep_open = 0;
309 fn = strdup(p + 5);
310 if(fn == NULL) {
311 krb5_set_error_message(context, ENOMEM,
312 N_("malloc: out of memory", ""));
313 return ENOMEM;
314 }
315 if(p[4] == '='){
316 int i = open(fn, O_WRONLY | O_CREAT |
317 O_TRUNC | O_APPEND, 0666);
318 if(i < 0) {
319 ret = errno;
320 krb5_set_error_message(context, ret,
321 N_("open(%s) logile: %s", ""), fn,
322 strerror(ret));
323 free(fn);
324 return ret;
325 }
326 rk_cloexec(i);
327 file = fdopen(i, "a");
328 if(file == NULL){
329 ret = errno;
330 close(i);
331 krb5_set_error_message(context, ret,
332 N_("fdopen(%s) logfile: %s", ""),
333 fn, strerror(ret));
334 free(fn);
335 return ret;
336 }
337 keep_open = 1;
338 }
339 ret = open_file(context, f, min, max, fn, "a", file, keep_open);
340 }else if(strncmp(p, "DEVICE", 6) == 0 && (p[6] == ':' || p[6] == '=')){
341 ret = open_file(context, f, min, max, strdup(p + 7), "w", NULL, 0);
342 }else if(strncmp(p, "SYSLOG", 6) == 0 && (p[6] == '\0' || p[6] == ':')){
343 char severity[128] = "";
344 char facility[128] = "";
345 p += 6;
346 if(*p != '\0')
347 p++;
348 if(strsep_copy(&p, ":", severity, sizeof(severity)) != -1)
349 strsep_copy(&p, ":", facility, sizeof(facility));
350 if(*severity == '\0')
351 strlcpy(severity, "ERR", sizeof(severity));
352 if(*facility == '\0')
353 strlcpy(facility, "AUTH", sizeof(facility));
354 ret = open_syslog(context, f, min, max, severity, facility);
355 }else{
356 ret = HEIM_ERR_LOG_PARSE; /* XXX */
357 krb5_set_error_message (context, ret,
358 N_("unknown log type: %s", ""), p);
359 }
360 return ret;
361}
362
363
364KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
365krb5_openlog(krb5_context context,
366 const char *program,
367 krb5_log_facility **fac)
368{
369 krb5_error_code ret;
370 char **p, **q;
371
372 ret = krb5_initlog(context, program, fac);
373 if(ret)
374 return ret;
375
376 p = krb5_config_get_strings(context, NULL, "logging", program, NULL);
377 if(p == NULL)
378 p = krb5_config_get_strings(context, NULL, "logging", "default", NULL);
379 if(p){
380 for(q = p; *q && ret == 0; q++)
381 ret = krb5_addlog_dest(context, *fac, *q);
382 krb5_config_free_strings(p);
383 }else
384 ret = krb5_addlog_dest(context, *fac, "SYSLOG");
385 return ret;
386}
387
388KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
389krb5_closelog(krb5_context context,
390 krb5_log_facility *fac)
391{
392 int i;
393 for(i = 0; i < fac->len; i++)
394 (*fac->val[i].close_func)(fac->val[i].data);
395 free(fac->val);
396 free(fac->program);
397 fac->val = NULL;
398 fac->len = 0;
399 fac->program = NULL;
400 free(fac);
401 return 0;
402}
403
404#undef __attribute__
405#define __attribute__(X)
406
407KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
408krb5_vlog_msg(krb5_context context,
409 krb5_log_facility *fac,
410 char **reply,
411 int level,
412 const char *fmt,
413 va_list ap)
414 __attribute__((format (printf, 5, 0)))
415{
416
417 char *msg = NULL;
418 const char *actual = NULL;
419 char buf[64];
420 time_t t = 0;
421 int i;
422
423 for(i = 0; fac && i < fac->len; i++)
424 if(fac->val[i].min <= level &&
425 (fac->val[i].max < 0 || fac->val[i].max >= level)) {
426 if(t == 0) {
427 t = time(NULL);
428 krb5_format_time(context, t, buf, sizeof(buf), TRUE);
429 }
430 if(actual == NULL) {
431 int ret = vasprintf(&msg, fmt, ap);
432 if(ret < 0 || msg == NULL)
433 actual = fmt;
434 else
435 actual = msg;
436 }
437 (*fac->val[i].log_func)(buf, actual, fac->val[i].data);
438 }
439 if(reply == NULL)
440 free(msg);
441 else
442 *reply = msg;
443 return 0;
444}
445
446KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
447krb5_vlog(krb5_context context,
448 krb5_log_facility *fac,
449 int level,
450 const char *fmt,
451 va_list ap)
452 __attribute__((format (printf, 4, 0)))
453{
454 return krb5_vlog_msg(context, fac, NULL, level, fmt, ap);
455}
456
457KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
458krb5_log_msg(krb5_context context,
459 krb5_log_facility *fac,
460 int level,
461 char **reply,
462 const char *fmt,
463 ...)
464 __attribute__((format (printf, 5, 6)))
465{
466 va_list ap;
467 krb5_error_code ret;
468
469 va_start(ap, fmt);
470 ret = krb5_vlog_msg(context, fac, reply, level, fmt, ap);
471 va_end(ap);
472 return ret;
473}
474
475
476KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
477krb5_log(krb5_context context,
478 krb5_log_facility *fac,
479 int level,
480 const char *fmt,
481 ...)
482 __attribute__((format (printf, 4, 5)))
483{
484 va_list ap;
485 krb5_error_code ret;
486
487 va_start(ap, fmt);
488 ret = krb5_vlog(context, fac, level, fmt, ap);
489 va_end(ap);
490 return ret;
491}
492
493void KRB5_LIB_FUNCTION
494_krb5_debug(krb5_context context,
495 int level,
496 const char *fmt,
497 ...)
498 __attribute__((format (printf, 3, 4)))
499{
500 va_list ap;
501
502 if (context == NULL || context->debug_dest == NULL)
503 return;
504
505 va_start(ap, fmt);
506 krb5_vlog(context, context->debug_dest, level, fmt, ap);
507 va_end(ap);
508}
509
510krb5_boolean KRB5_LIB_FUNCTION
511_krb5_have_debug(krb5_context context, int level)
512{
513 if (context == NULL || context->debug_dest == NULL)
514 return 0 ;
515 return 1;
516}
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