diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/support/pop/RCS/syslog.c,v

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   9 date    93.08.25.17.23.42;      author jromine; state Exp;
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  29 date    90.04.05.15.34.53;      author sources; state Exp;
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  49 date    90.02.01.14.09.03;      author sources; state Exp;
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  54 desc
  55 @@
  56
  57
  58 1.9
  59 log
  60 @off_t fixes for BSD44
  61 @
  62 text
  63 @#if !defined (BSD43) && !defined(hpux)
  64 #ifndef lint
  65 static char SccsId[] =  "@@(#)syslog.c  4.1 (Berkeley) 5/27/83";
  66 #endif
  67 #ifndef lint
  68 static char ident[] = "@@(#)$Id: syslog.c,v 1.8 1992/12/15 00:20:22 jromine Exp jromine $";
  69 #endif  /* lint */
  70
  71 /*
  72  * SYSLOG -- print message on log file
  73  *
  74  * This routine looks a lot like printf, except that it
  75  * outputs to the log file instead of the standard output.
  76  * Also, it prints the module name in front of lines,
  77  * and has some other formatting types (or will sometime).
  78  * Also, it adds a newline on the end of messages.
  79  *
  80  * The output of this routine is intended to be read by
  81  * /etc/syslog, which will add timestamps.
  82  */
  83 #include <sys/types.h>
  84 #include <sys/socket.h>
  85 #include <netinet/in.h>
  86
  87 #include "syslog.h"
  88 #include <netdb.h>
  89
  90 #define MAXLINE 1024            /* max message size */
  91 #define BUFSLOP 20              /* space to allow for "extra stuff" */
  92 #ifndef NULL
  93 #define NULL    0               /* manifest */
  94 #endif
  95
  96 #define LOG_COOLIT      LOG_LOCAL0      /* local syslog code */
  97 #define LOG_DGRAM       LOG_LOCAL1      /* idem */
  98
  99 #ifndef LOG_HOST
 100 #define LOG_HOST        "localhost"     /* host where syslogd is running */
 101 #endif  /* LOG_HOST */
 102
 103 int     LogFile = -1;           /* fd for log */
 104 int     LogStat = 0;            /* status bits, set by initlog */
 105 char    *LogTag = (char *)NULL; /* string to tag the entry with */
 106 int     LogMask = LOG_DEBUG;    /* lowest priority to be logged */
 107
 108 struct sockaddr_in SyslogAddr;
 109 static char *SyslogHost = LOG_HOST;
 110
 111 extern  int errno;
 112 #ifndef BSD44
 113 extern  int     sys_nerr;
 114 extern  char *sys_errlist[];
 115 #endif
 116
 117 syslog(pri, fmt, p0, p1, p2, p3, p4)
 118         int pri;
 119         char *fmt;
 120 {
 121         char buf[MAXLINE+BUFSLOP], outline[MAXLINE + 1];
 122         register char *b, *f;
 123
 124         if (LogFile < 0)
 125                 openlog(0, 0);
 126         /* see if we should just throw out this message */
 127         if (pri > LogMask)
 128                 return;
 129         for (b = buf, f = fmt; f && *f; b = buf) {
 130                 register char c;
 131
 132                 if (pri > 0 && (LogStat & LOG_COOLIT) == 0) {
 133                         sprintf(b, "<%d>", pri);
 134                         b += strlen(b);
 135                 }
 136                 if (LogStat & LOG_PID) {
 137                         sprintf(b, "%d ", getpid());
 138                         b += strlen(b);
 139                 }
 140                 if (LogTag) {
 141                         sprintf(b, "%s: ", LogTag);
 142                         b += strlen(b);
 143                 }
 144                 while ((c = *f++) != '\0' && c != '\n' && b < buf + MAXLINE) {
 145                         if (c != '%') {
 146                                 *b++ = c;
 147                                 continue;
 148                         }
 149                         c = *f++;
 150                         if (c != 'm') {
 151 #ifndef notdef
 152                                 *b++ = '%', *b++ = c, *b++ = '\0';
 153 #else
 154                                 *b++ = '%', *b++ = c;
 155 #endif
 156                                 continue;
 157                         }
 158                         if ((unsigned)errno > sys_nerr)
 159                                 sprintf(b, "error %d", errno);
 160                         else
 161                                 strcat(b, sys_errlist[errno]);
 162                         b += strlen(b);
 163                 }
 164                 if (c == '\0')
 165                         f--;
 166                 *b++ = '\n', *b = '\0';
 167                 sprintf(outline, buf, p0, p1, p2, p3, p4);
 168                 errno = 0;
 169                 if (LogStat & LOG_DGRAM)
 170                         (void) sendto(LogFile, outline, strlen(outline), 0,
 171                                    &SyslogAddr, sizeof SyslogAddr);
 172                 else
 173                         (void) write(LogFile, outline, strlen(outline));
 174                 if (errno)
 175                         perror("syslog: sendto");
 176         }
 177 }
 178
 179 /*
 180  * OPENLOG -- open system log
 181  */
 182 openlog(ident, logstat)
 183         char *ident;
 184         int logstat;
 185 {
 186         struct servent *sp;
 187         struct hostent *hp;
 188
 189         LogTag = ident;
 190         LogStat = logstat;
 191         if (LogFile >= 0)
 192                 return;
 193         sp = getservbyname("syslog", "udp");
 194         hp = gethostbyname(SyslogHost);
 195         if (sp == NULL || hp == NULL)
 196                 goto bad;
 197         LogFile = socket(AF_INET, SOCK_DGRAM, 0);
 198         if (LogFile < 0) {
 199                 perror("syslog: socket");
 200                 goto bad;
 201         }
 202         bzero(&SyslogAddr, sizeof SyslogAddr);
 203         SyslogAddr.sin_family = hp->h_addrtype;
 204         bcopy(hp->h_addr, (char *)&SyslogAddr.sin_addr, hp->h_length);
 205         SyslogAddr.sin_port = sp->s_port;
 206         LogStat |= LOG_DGRAM;
 207         return;
 208 bad:
 209         LogStat |= LOG_COOLIT;
 210         LogStat &= ~LOG_DGRAM;
 211         LogMask = LOG_CRIT;
 212         LogFile = open("/dev/console", 1);
 213         if (LogFile < 0) {
 214                 perror("syslog: /dev/console");
 215                 LogFile = 2;
 216         }
 217 }
 218
 219 /*
 220  * CLOSELOG -- close the system log
 221  */
 222 closelog()
 223 {
 224
 225         (void) close(LogFile);
 226         LogFile = -1;
 227 }
 228 #endif  /* not BSD43 */
 229 @
 230
 231
 232 1.8
 233 log
 234 @endif sugar
 235 @
 236 text
 237 @d6 1
 238 a6 1
 239 static char ident[] = "@@(#)$Id: syslog.c,v 1.7 1992/11/19 00:24:36 jromine Exp jromine $";
 240 d49 3
 241 a51 1
 242 extern  int errno, sys_nerr;
 243 d53 1
 244 @
 245
 246
 247 1.7
 248 log
 249 @define NULL only if not defined
 250 @
 251 text
 252 @d6 2
 253 a7 2
 254 static char ident[] = "@@(#)$Id: syslog.c,v 1.6 1992/11/13 00:04:36 jromine Exp jromine $";
 255 #endif  lint
 256 d39 1
 257 a39 1
 258 #endif  LOG_HOST
 259 d163 1
 260 a163 1
 261 #endif  not BSD43
 262 @
 263
 264
 265 1.6
 266 log
 267 @typo
 268 @
 269 text
 270 @d6 1
 271 a6 1
 272 static char ident[] = "@@(#)$Id: syslog.c,v 1.5 1990/04/05 15:34:53 sources Exp jromine $";
 273 d30 1
 274 d32 1
 275 d43 1
 276 a43 1
 277 char    *LogTag = NULL;         /* string to tag the entry with */
 278 @
 279
 280
 281 1.5
 282 log
 283 @add ID
 284 @
 285 text
 286 @d6 1
 287 a6 1
 288 static char ident[] = "@@(#)$Id:$";
 289 d84 1
 290 a84 1
 291 #ifndef UCI
 292 d86 1
 293 a86 1
 294 #else   UCI
 295 d88 1
 296 a88 1
 297 #endif  UCI
 298 @
 299
 300
 301 1.4
 302 log
 303 @add ID
 304 @
 305 text
 306 @d6 1
 307 a6 1
 308 static char ident[] = "@@(#)$Id:";
 309 @
 310
 311
 312 1.3
 313 log
 314 @SYS5 patches
 315 @
 316 text
 317 @d5 3
 318 @
 319
 320
 321 1.2
 322 log
 323 @HPUX systems evidently have syslog now
 324 @
 325 text
 326 @d22 1
 327 a22 1
 328 #include <syslog.h>
 329 d28 7
 330 @
 331
 332
 333 1.1
 334 log
 335 @Initial revision
 336 @
 337 text
 338 @d1 1
 339 a1 1
 340 #ifndef BSD43
 341 @