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1 /* |
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2 * log.c -- logging routines |
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3 * |
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4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include <assert.h> |
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20 #include <stdio.h> |
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21 #include <syslog.h> |
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22 |
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23 #include "log.h" |
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24 |
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25 /* TODO: replace. */ |
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26 static struct { |
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27 enum log_level verbosity; |
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28 } config = { |
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29 .verbosity = LOG_LEVEL_DEBUG |
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30 }; |
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31 |
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32 static int syslog_levels[] = { |
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33 [LOG_LEVEL_DEBUG] = LOG_DEBUG, |
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34 [LOG_LEVEL_INFO] = LOG_INFO, |
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35 [LOG_LEVEL_WARNING] = LOG_WARNING |
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36 }; |
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37 |
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38 void |
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39 log_open(const char *name) |
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40 { |
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41 openlog(name, 0, LOG_USER); |
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42 } |
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43 |
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44 void |
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45 log_write(enum log_level level, const char *fmt, ...) |
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46 { |
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47 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); |
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48 assert(fmt); |
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49 |
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50 if (config.verbosity >= level) { |
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51 va_list ap; |
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52 |
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53 va_start(ap, fmt); |
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54 log_vwrite(level, fmt, ap); |
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55 va_end(ap); |
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56 } |
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57 } |
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58 |
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59 void |
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60 log_vwrite(enum log_level level, const char *fmt, va_list ap) |
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61 { |
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62 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); |
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63 assert(fmt); |
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64 |
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65 char line[BUFSIZ]; |
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66 |
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67 vsnprintf(line, sizeof (line), fmt, ap); |
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68 syslog(syslog_levels[level], "%s", line); |
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69 } |
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70 |
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71 void |
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72 log_finish(void) |
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73 { |
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74 if (config.verbosity > 0) |
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75 closelog(); |
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76 } |
