ipsec-tools/racoon/logger.c

   1 /*      $KAME: logger.c,v 1.9 2002/09/03 14:37:03 itojun Exp $  */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  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.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include "config.h"
  33
  34 #include <sys/types.h>
  35 #include <sys/param.h>
  36
  37 #include <stdlib.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include <errno.h>
  41 #ifdef HAVE_STDARG_H
  42 #include <stdarg.h>
  43 #else
  44 #include <varargs.h>
  45 #endif
  46 #if TIME_WITH_SYS_TIME
  47 # include <sys/time.h>
  48 # include <time.h>
  49 #else
  50 # if HAVE_SYS_TIME_H
  51 #  include <sys/time.h>
  52 # else
  53 #  include <time.h>
  54 # endif
  55 #endif
  56
  57 #include "logger.h"
  58 #include "var.h"
  59 #include "gcmalloc.h"
  60
  61 struct log *
  62 log_open(siz, fname)
  63         size_t siz;
  64         char *fname;
  65 {
  66         struct log *p;
  67
  68         p = (struct log *)racoon_malloc(sizeof(*p));
  69         if (p == NULL)
  70                 return NULL;
  71         memset(p, 0, sizeof(*p));
  72
  73         p->buf = (char **)racoon_malloc(sizeof(char *) * siz);
  74         if (p->buf == NULL) {
  75                 racoon_free(p);
  76                 return NULL;
  77         }
  78         memset(p->buf, 0, sizeof(char *) * siz);
  79
  80         p->tbuf = (time_t *)racoon_malloc(sizeof(time_t *) * siz);
  81         if (p->tbuf == NULL) {
  82                 racoon_free(p->buf);
  83                 racoon_free(p);
  84                 return NULL;
  85         }
  86         memset(p->tbuf, 0, sizeof(time_t *) * siz);
  87
  88         p->siz = siz;
  89         if (fname)
  90                 p->fname = strdup(fname);
  91
  92         return p;
  93 }
  94
  95 /*
  96  * append string to ring buffer.
  97  * string must be \n-terminated (since we add timestamps).
  98  * even if not, we'll add \n to avoid formatting mistake (see log_close()).
  99  */
 100 void
 101 log_add(p, str)
 102         struct log *p;
 103         char *str;
 104 {
 105         /* syslog if p->fname == NULL? */
 106         if (p->buf[p->head])
 107                 racoon_free(p->buf[p->head]);
 108         p->buf[p->head] = strdup(str);
 109         p->tbuf[p->head] = time(NULL);
 110         p->head++;
 111         p->head %= p->siz;
 112 }
 113
 114 /*
 115  * write out string to the log file, as is.
 116  * \n-termination is up to the caller.  if you don't add \n, the file
 117  * format may be broken.
 118  */
 119 int
 120 log_print(p, str)
 121         struct log *p;
 122         char *str;
 123 {
 124         FILE *fp;
 125
 126         if (p->fname == NULL)
 127                 return -1;      /*XXX syslog?*/
 128         fp = fopen(p->fname, "a");
 129         if (fp == NULL)
 130                 return -1;
 131         fprintf(fp, "%s", str);
 132         fclose(fp);
 133
 134         return 0;
 135 }
 136
 137 int
 138 log_vprint(struct log *p, const char *fmt, ...)
 139 {
 140         va_list ap;
 141
 142         FILE *fp;
 143
 144         if (p->fname == NULL)
 145                 return -1;      /*XXX syslog?*/
 146         fp = fopen(p->fname, "a");
 147         if (fp == NULL)
 148                 return -1;
 149         va_start(ap, fmt);
 150         vfprintf(fp, fmt, ap);
 151         va_end(ap);
 152
 153         fclose(fp);
 154
 155         return 0;
 156 }
 157
 158 int
 159 log_vaprint(struct log *p, const char *fmt, va_list ap)
 160 {
 161         FILE *fp;
 162
 163         if (p->fname == NULL)
 164                 return -1;      /*XXX syslog?*/
 165         fp = fopen(p->fname, "a");
 166         if (fp == NULL)
 167                 return -1;
 168         vfprintf(fp, fmt, ap);
 169         fclose(fp);
 170
 171         return 0;
 172 }
 173
 174 /*
 175  * write out content of ring buffer, and reclaim the log structure
 176  */
 177 int
 178 log_close(p)
 179         struct log *p;
 180 {
 181         FILE *fp;
 182         int i, j;
 183         char ts[256];
 184         struct tm *tm;
 185
 186         if (p->fname == NULL)
 187                 goto nowrite;
 188         fp = fopen(p->fname, "a");
 189         if (fp == NULL)
 190                 goto nowrite;
 191
 192         for (i = 0; i < p->siz; i++) {
 193                 j = (p->head + i) % p->siz;
 194                 if (p->buf[j]) {
 195                         tm = localtime(&p->tbuf[j]);
 196                         strftime(ts, sizeof(ts), "%B %d %T", tm);
 197                         fprintf(fp, "%s: %s\n", ts, p->buf[j]);
 198                         if (*(p->buf[j] + strlen(p->buf[j]) - 1) != '\n')
 199                                 fprintf(fp, "\n");
 200                 }
 201         }
 202         fclose(fp);
 203
 204 nowrite:
 205         log_free(p);
 206         return 0;
 207 }
 208
 209 void
 210 log_free(p)
 211         struct log *p;
 212 {
 213         int i;
 214
 215         for (i = 0; i < p->siz; i++)
 216                 racoon_free(p->buf[i]);
 217         racoon_free(p->buf);
 218         racoon_free(p->tbuf);
 219         if (p->fname)
 220                 racoon_free(p->fname);
 221         racoon_free(p);
 222 }
 223
 224 #ifdef TEST
 225 struct log *l;
 226
 227 void
 228 vatest(const char *fmt, ...)
 229 {
 230         va_list ap;
 231         va_start(ap, fmt);
 232         log_vaprint(l, fmt, ap);
 233         va_end(ap);
 234 }
 235
 236 int
 237 main(argc, argv)
 238         int argc;
 239         char **argv;
 240 {
 241         int i;
 242
 243         l = log_open(30, "/tmp/hoge");
 244         if (l == NULL)
 245                 errx(1, "hoge");
 246
 247         for (i = 0; i < 50; i++) {
 248                 log_add(l, "foo");
 249                 log_add(l, "baa");
 250                 log_add(l, "baz");
 251         }
 252         log_print(l, "hoge\n");
 253         log_vprint(l, "hoge %s\n", "this is test");
 254         vatest("%s %s\n", "this is", "vprint test");
 255         abort();
 256         log_free(l);
 257 }
 258
 259 #endif
 260