Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 1 | /* |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
| 3 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 4 | * All rights reserved |
| 5 | * |
| 6 | * As far as I am concerned, the code I have written for this software |
| 7 | * can be used freely for any purpose. Any derived versions of this |
| 8 | * software must be clearly marked as such, and if the derived work is |
| 9 | * incompatible with the protocol description in the RFC file, it must be |
| 10 | * called by a name other than "ssh" or "Secure Shell". |
| 11 | */ |
| 12 | /* |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 13 | * Copyright (c) 2000 Markus Friedl. All rights reserved. |
| 14 | * |
| 15 | * Redistribution and use in source and binary forms, with or without |
| 16 | * modification, are permitted provided that the following conditions |
| 17 | * are met: |
| 18 | * 1. Redistributions of source code must retain the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer. |
| 20 | * 2. Redistributions in binary form must reproduce the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer in the |
| 22 | * documentation and/or other materials provided with the distribution. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 25 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 26 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 27 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 28 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 29 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 30 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 32 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 33 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 34 | */ |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 35 | |
| 36 | #include "includes.h" |
Ben Lindstrom | 264ee30 | 2002-07-23 21:01:56 +0000 | [diff] [blame] | 37 | RCSID("$OpenBSD: log.c,v 1.24 2002/07/19 15:43:33 markus Exp $"); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 38 | |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 39 | #include "log.h" |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 40 | #include "xmalloc.h" |
| 41 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 42 | #include <syslog.h> |
| 43 | |
| 44 | static LogLevel log_level = SYSLOG_LEVEL_INFO; |
| 45 | static int log_on_stderr = 1; |
| 46 | static int log_facility = LOG_AUTH; |
| 47 | static char *argv0; |
| 48 | |
| 49 | extern char *__progname; |
| 50 | |
| 51 | /* textual representation of log-facilities/levels */ |
| 52 | |
| 53 | static struct { |
| 54 | const char *name; |
| 55 | SyslogFacility val; |
| 56 | } log_facilities[] = { |
| 57 | { "DAEMON", SYSLOG_FACILITY_DAEMON }, |
| 58 | { "USER", SYSLOG_FACILITY_USER }, |
| 59 | { "AUTH", SYSLOG_FACILITY_AUTH }, |
Damien Miller | 30246a8 | 2001-03-05 21:23:31 +1100 | [diff] [blame] | 60 | #ifdef LOG_AUTHPRIV |
| 61 | { "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV }, |
| 62 | #endif |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 63 | { "LOCAL0", SYSLOG_FACILITY_LOCAL0 }, |
| 64 | { "LOCAL1", SYSLOG_FACILITY_LOCAL1 }, |
| 65 | { "LOCAL2", SYSLOG_FACILITY_LOCAL2 }, |
| 66 | { "LOCAL3", SYSLOG_FACILITY_LOCAL3 }, |
| 67 | { "LOCAL4", SYSLOG_FACILITY_LOCAL4 }, |
| 68 | { "LOCAL5", SYSLOG_FACILITY_LOCAL5 }, |
| 69 | { "LOCAL6", SYSLOG_FACILITY_LOCAL6 }, |
| 70 | { "LOCAL7", SYSLOG_FACILITY_LOCAL7 }, |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 71 | { NULL, SYSLOG_FACILITY_NOT_SET } |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | static struct { |
| 75 | const char *name; |
| 76 | LogLevel val; |
| 77 | } log_levels[] = |
| 78 | { |
| 79 | { "QUIET", SYSLOG_LEVEL_QUIET }, |
| 80 | { "FATAL", SYSLOG_LEVEL_FATAL }, |
| 81 | { "ERROR", SYSLOG_LEVEL_ERROR }, |
| 82 | { "INFO", SYSLOG_LEVEL_INFO }, |
| 83 | { "VERBOSE", SYSLOG_LEVEL_VERBOSE }, |
| 84 | { "DEBUG", SYSLOG_LEVEL_DEBUG1 }, |
| 85 | { "DEBUG1", SYSLOG_LEVEL_DEBUG1 }, |
| 86 | { "DEBUG2", SYSLOG_LEVEL_DEBUG2 }, |
| 87 | { "DEBUG3", SYSLOG_LEVEL_DEBUG3 }, |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 88 | { NULL, SYSLOG_LEVEL_NOT_SET } |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | SyslogFacility |
| 92 | log_facility_number(char *name) |
| 93 | { |
| 94 | int i; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 95 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 96 | if (name != NULL) |
| 97 | for (i = 0; log_facilities[i].name; i++) |
| 98 | if (strcasecmp(log_facilities[i].name, name) == 0) |
| 99 | return log_facilities[i].val; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 100 | return SYSLOG_FACILITY_NOT_SET; |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | LogLevel |
| 104 | log_level_number(char *name) |
| 105 | { |
| 106 | int i; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 107 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 108 | if (name != NULL) |
| 109 | for (i = 0; log_levels[i].name; i++) |
| 110 | if (strcasecmp(log_levels[i].name, name) == 0) |
| 111 | return log_levels[i].val; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 112 | return SYSLOG_LEVEL_NOT_SET; |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 113 | } |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 114 | |
| 115 | /* Error messages that should be logged. */ |
| 116 | |
| 117 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 118 | error(const char *fmt,...) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 119 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 120 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 121 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 122 | va_start(args, fmt); |
| 123 | do_log(SYSLOG_LEVEL_ERROR, fmt, args); |
| 124 | va_end(args); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | /* Log this message (information that usually should go to the log). */ |
| 128 | |
| 129 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 130 | log(const char *fmt,...) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 131 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 132 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 133 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 134 | va_start(args, fmt); |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 135 | do_log(SYSLOG_LEVEL_INFO, fmt, args); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 136 | va_end(args); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | /* More detailed messages (information that does not need to go to the log). */ |
| 140 | |
| 141 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 142 | verbose(const char *fmt,...) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 143 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 144 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 145 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 146 | va_start(args, fmt); |
| 147 | do_log(SYSLOG_LEVEL_VERBOSE, fmt, args); |
| 148 | va_end(args); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | /* Debugging messages that should not be logged during normal operation. */ |
| 152 | |
| 153 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 154 | debug(const char *fmt,...) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 155 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 156 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 157 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 158 | va_start(args, fmt); |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 159 | do_log(SYSLOG_LEVEL_DEBUG1, fmt, args); |
| 160 | va_end(args); |
| 161 | } |
| 162 | |
| 163 | void |
| 164 | debug2(const char *fmt,...) |
| 165 | { |
| 166 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 167 | |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 168 | va_start(args, fmt); |
| 169 | do_log(SYSLOG_LEVEL_DEBUG2, fmt, args); |
| 170 | va_end(args); |
| 171 | } |
| 172 | |
| 173 | void |
| 174 | debug3(const char *fmt,...) |
| 175 | { |
| 176 | va_list args; |
Ben Lindstrom | 8e8ef2a | 2002-07-07 22:14:55 +0000 | [diff] [blame] | 177 | |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 178 | va_start(args, fmt); |
| 179 | do_log(SYSLOG_LEVEL_DEBUG3, fmt, args); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 180 | va_end(args); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | /* Fatal cleanup */ |
| 184 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 185 | struct fatal_cleanup { |
| 186 | struct fatal_cleanup *next; |
| 187 | void (*proc) (void *); |
| 188 | void *context; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 189 | }; |
| 190 | |
| 191 | static struct fatal_cleanup *fatal_cleanups = NULL; |
| 192 | |
| 193 | /* Registers a cleanup function to be called by fatal() before exiting. */ |
| 194 | |
| 195 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 196 | fatal_add_cleanup(void (*proc) (void *), void *context) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 197 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 198 | struct fatal_cleanup *cu; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 199 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 200 | cu = xmalloc(sizeof(*cu)); |
| 201 | cu->proc = proc; |
| 202 | cu->context = context; |
| 203 | cu->next = fatal_cleanups; |
| 204 | fatal_cleanups = cu; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | /* Removes a cleanup frunction to be called at fatal(). */ |
| 208 | |
| 209 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 210 | fatal_remove_cleanup(void (*proc) (void *context), void *context) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 211 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 212 | struct fatal_cleanup **cup, *cu; |
| 213 | |
| 214 | for (cup = &fatal_cleanups; *cup; cup = &cu->next) { |
| 215 | cu = *cup; |
| 216 | if (cu->proc == proc && cu->context == context) { |
| 217 | *cup = cu->next; |
| 218 | xfree(cu); |
| 219 | return; |
| 220 | } |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 221 | } |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 222 | fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx", |
| 223 | (u_long) proc, (u_long) context); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 224 | } |
| 225 | |
Ben Lindstrom | 264ee30 | 2002-07-23 21:01:56 +0000 | [diff] [blame] | 226 | /* Remove all cleanups, to be called after fork() */ |
| 227 | void |
| 228 | fatal_remove_all_cleanups(void) |
| 229 | { |
| 230 | struct fatal_cleanup *cu, *next_cu; |
| 231 | |
| 232 | for (cu = fatal_cleanups; cu; cu = next_cu) { |
| 233 | next_cu = cu->next; |
| 234 | xfree(cu); |
| 235 | } |
| 236 | } |
| 237 | |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 238 | /* Cleanup and exit */ |
| 239 | void |
| 240 | fatal_cleanup(void) |
| 241 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 242 | struct fatal_cleanup *cu, *next_cu; |
| 243 | static int called = 0; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 244 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 245 | if (called) |
| 246 | exit(255); |
| 247 | called = 1; |
| 248 | /* Call cleanup functions. */ |
| 249 | for (cu = fatal_cleanups; cu; cu = next_cu) { |
| 250 | next_cu = cu->next; |
| 251 | debug("Calling cleanup 0x%lx(0x%lx)", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 252 | (u_long) cu->proc, (u_long) cu->context); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 253 | (*cu->proc) (cu->context); |
| 254 | } |
| 255 | exit(255); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 256 | } |
Damien Miller | 6162d12 | 1999-11-21 13:23:52 +1100 | [diff] [blame] | 257 | |
Damien Miller | 6162d12 | 1999-11-21 13:23:52 +1100 | [diff] [blame] | 258 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 259 | /* |
| 260 | * Initialize the log. |
| 261 | */ |
| 262 | |
| 263 | void |
| 264 | log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr) |
| 265 | { |
| 266 | argv0 = av0; |
| 267 | |
| 268 | switch (level) { |
| 269 | case SYSLOG_LEVEL_QUIET: |
| 270 | case SYSLOG_LEVEL_FATAL: |
| 271 | case SYSLOG_LEVEL_ERROR: |
| 272 | case SYSLOG_LEVEL_INFO: |
| 273 | case SYSLOG_LEVEL_VERBOSE: |
| 274 | case SYSLOG_LEVEL_DEBUG1: |
| 275 | case SYSLOG_LEVEL_DEBUG2: |
| 276 | case SYSLOG_LEVEL_DEBUG3: |
| 277 | log_level = level; |
| 278 | break; |
| 279 | default: |
Kevin Steves | edcd576 | 2001-04-02 13:45:00 +0000 | [diff] [blame] | 280 | fprintf(stderr, "Unrecognized internal syslog level code %d\n", |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 281 | (int) level); |
| 282 | exit(1); |
| 283 | } |
| 284 | |
| 285 | log_on_stderr = on_stderr; |
| 286 | if (on_stderr) |
| 287 | return; |
| 288 | |
| 289 | switch (facility) { |
| 290 | case SYSLOG_FACILITY_DAEMON: |
| 291 | log_facility = LOG_DAEMON; |
| 292 | break; |
| 293 | case SYSLOG_FACILITY_USER: |
| 294 | log_facility = LOG_USER; |
| 295 | break; |
| 296 | case SYSLOG_FACILITY_AUTH: |
| 297 | log_facility = LOG_AUTH; |
| 298 | break; |
Damien Miller | 30246a8 | 2001-03-05 21:23:31 +1100 | [diff] [blame] | 299 | #ifdef LOG_AUTHPRIV |
| 300 | case SYSLOG_FACILITY_AUTHPRIV: |
| 301 | log_facility = LOG_AUTHPRIV; |
| 302 | break; |
Ben Lindstrom | 53f11c6 | 2001-03-05 08:18:17 +0000 | [diff] [blame] | 303 | #endif |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 304 | case SYSLOG_FACILITY_LOCAL0: |
| 305 | log_facility = LOG_LOCAL0; |
| 306 | break; |
| 307 | case SYSLOG_FACILITY_LOCAL1: |
| 308 | log_facility = LOG_LOCAL1; |
| 309 | break; |
| 310 | case SYSLOG_FACILITY_LOCAL2: |
| 311 | log_facility = LOG_LOCAL2; |
| 312 | break; |
| 313 | case SYSLOG_FACILITY_LOCAL3: |
| 314 | log_facility = LOG_LOCAL3; |
| 315 | break; |
| 316 | case SYSLOG_FACILITY_LOCAL4: |
| 317 | log_facility = LOG_LOCAL4; |
| 318 | break; |
| 319 | case SYSLOG_FACILITY_LOCAL5: |
| 320 | log_facility = LOG_LOCAL5; |
| 321 | break; |
| 322 | case SYSLOG_FACILITY_LOCAL6: |
| 323 | log_facility = LOG_LOCAL6; |
| 324 | break; |
| 325 | case SYSLOG_FACILITY_LOCAL7: |
| 326 | log_facility = LOG_LOCAL7; |
| 327 | break; |
| 328 | default: |
| 329 | fprintf(stderr, |
Kevin Steves | edcd576 | 2001-04-02 13:45:00 +0000 | [diff] [blame] | 330 | "Unrecognized internal syslog facility code %d\n", |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 331 | (int) facility); |
| 332 | exit(1); |
| 333 | } |
Damien Miller | 6162d12 | 1999-11-21 13:23:52 +1100 | [diff] [blame] | 334 | } |
| 335 | |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 336 | #define MSGBUFSIZ 1024 |
| 337 | |
Ben Lindstrom | 9c8edc9 | 2002-02-26 17:52:14 +0000 | [diff] [blame] | 338 | void |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 339 | do_log(LogLevel level, const char *fmt, va_list args) |
Damien Miller | 6162d12 | 1999-11-21 13:23:52 +1100 | [diff] [blame] | 340 | { |
Ben Lindstrom | 8a432f5 | 2001-03-05 07:24:46 +0000 | [diff] [blame] | 341 | char msgbuf[MSGBUFSIZ]; |
| 342 | char fmtbuf[MSGBUFSIZ]; |
| 343 | char *txt = NULL; |
| 344 | int pri = LOG_INFO; |
| 345 | |
| 346 | if (level > log_level) |
| 347 | return; |
| 348 | |
| 349 | switch (level) { |
| 350 | case SYSLOG_LEVEL_FATAL: |
| 351 | if (!log_on_stderr) |
| 352 | txt = "fatal"; |
| 353 | pri = LOG_CRIT; |
| 354 | break; |
| 355 | case SYSLOG_LEVEL_ERROR: |
| 356 | if (!log_on_stderr) |
| 357 | txt = "error"; |
| 358 | pri = LOG_ERR; |
| 359 | break; |
| 360 | case SYSLOG_LEVEL_INFO: |
| 361 | pri = LOG_INFO; |
| 362 | break; |
| 363 | case SYSLOG_LEVEL_VERBOSE: |
| 364 | pri = LOG_INFO; |
| 365 | break; |
| 366 | case SYSLOG_LEVEL_DEBUG1: |
| 367 | txt = "debug1"; |
| 368 | pri = LOG_DEBUG; |
| 369 | break; |
| 370 | case SYSLOG_LEVEL_DEBUG2: |
| 371 | txt = "debug2"; |
| 372 | pri = LOG_DEBUG; |
| 373 | break; |
| 374 | case SYSLOG_LEVEL_DEBUG3: |
| 375 | txt = "debug3"; |
| 376 | pri = LOG_DEBUG; |
| 377 | break; |
| 378 | default: |
| 379 | txt = "internal error"; |
| 380 | pri = LOG_ERR; |
| 381 | break; |
| 382 | } |
| 383 | if (txt != NULL) { |
| 384 | snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt); |
| 385 | vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args); |
| 386 | } else { |
| 387 | vsnprintf(msgbuf, sizeof(msgbuf), fmt, args); |
| 388 | } |
| 389 | if (log_on_stderr) { |
| 390 | fprintf(stderr, "%s\r\n", msgbuf); |
| 391 | } else { |
| 392 | openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility); |
| 393 | syslog(pri, "%.500s", msgbuf); |
| 394 | closelog(); |
| 395 | } |
Damien Miller | 6162d12 | 1999-11-21 13:23:52 +1100 | [diff] [blame] | 396 | } |