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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 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 "config.h" |
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24 #include "log.h" |
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25 |
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26 static int syslog_levels[] = { |
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27 [LOG_LEVEL_DEBUG] = LOG_DEBUG, |
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28 [LOG_LEVEL_INFO] = LOG_INFO, |
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29 [LOG_LEVEL_WARNING] = LOG_WARNING |
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30 }; |
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31 |
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32 void |
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33 log_open(void) |
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34 { |
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35 if (config.verbosity > 0) |
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36 openlog("imgpaster", 0, LOG_USER); |
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37 } |
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38 |
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39 void |
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40 log_write(enum log_level level, const char *fmt, ...) |
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41 { |
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42 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); |
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43 assert(fmt); |
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44 |
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45 if (config.verbosity >= level) { |
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46 va_list ap; |
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47 |
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48 va_start(ap, fmt); |
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49 log_vwrite(level, fmt, ap); |
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50 va_end(ap); |
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51 } |
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52 } |
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53 |
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54 void |
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55 log_vwrite(enum log_level level, const char *fmt, va_list ap) |
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56 { |
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57 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); |
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58 assert(fmt); |
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59 |
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60 char line[BUFSIZ]; |
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61 |
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62 vsnprintf(line, sizeof (line), fmt, ap); |
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63 syslog(syslog_levels[level], "%s", line); |
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64 } |
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65 |
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66 void |
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67 log_finish(void) |
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68 { |
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69 if (config.verbosity > 0) |
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70 closelog(); |
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71 } |
