comparison: src/server/daemon/log.c
src/server/daemon/log.c
- changeset 28
- f387669912e8
- child 32
- ebba53de8b18
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| 27:05b7576dca2b | 28:f387669912e8 |
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2011 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 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 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 #include <unistd.h> | |
| 33 #include <aio.h> | |
| 34 #include <time.h> | |
| 35 | |
| 36 #include "log.h" | |
| 37 #include "../util/strbuf.h" | |
| 38 | |
| 39 int is_initialized = 0; | |
| 40 | |
| 41 int log_file_fd; | |
| 42 int log_level = 0; | |
| 43 | |
| 44 /* | |
| 45 * if the log file is uninitialized, output is written to the ui_buffer | |
| 46 */ | |
| 47 sbuf_t *ui_buffer = NULL; | |
| 48 | |
| 49 char *log_date_month[] = { | |
| 50 "Jan", | |
| 51 "Feb", | |
| 52 "Mar", | |
| 53 "Apr", | |
| 54 "May", | |
| 55 "Jun", | |
| 56 "Jul", | |
| 57 "Aug", | |
| 58 "Sep", | |
| 59 "Oct", | |
| 60 "Nov", | |
| 61 "Dec" | |
| 62 }; | |
| 63 | |
| 64 char *log_levels[] = { | |
| 65 "error", | |
| 66 "warning", | |
| 67 "info" | |
| 68 }; | |
| 69 | |
| 70 int init_log_file(LogConfig *cfg) { | |
| 71 if(is_initialized) { | |
| 72 return 0; | |
| 73 } | |
| 74 | |
| 75 /* open the log file */ | |
| 76 mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; | |
| 77 log_file_fd = open(cfg->file, O_WRONLY | O_CREAT | O_APPEND, mode); | |
| 78 if(log_file_fd == -1) { | |
| 79 return -1; | |
| 80 } | |
| 81 | |
| 82 if(!strcmp(cfg->level, "ERROR")) { | |
| 83 log_level = LOG_LEVEL_ERROR; | |
| 84 } else if(!strcmp(cfg->level, "WARNING")) { | |
| 85 log_level = LOG_LEVEL_WARNING; | |
| 86 } else if(!strcmp(cfg->level, "INFO")) { | |
| 87 log_level = LOG_LEVEL_INFO; | |
| 88 } | |
| 89 | |
| 90 if(cfg->log_stdout) { | |
| 91 // TODO | |
| 92 } | |
| 93 if(cfg->log_stderr) { | |
| 94 // TODO | |
| 95 } | |
| 96 | |
| 97 | |
| 98 is_initialized = 1; | |
| 99 | |
| 100 /* if ui_buffer is not NULL, write it to the log file */ | |
| 101 if(ui_buffer) { | |
| 102 size_t len = ui_buffer->length; | |
| 103 size_t r; | |
| 104 while(len > 0) { | |
| 105 r = write(log_file_fd, ui_buffer->ptr, ui_buffer->length); | |
| 106 len -= r; | |
| 107 } | |
| 108 | |
| 109 sbuf_free(ui_buffer); | |
| 110 } | |
| 111 | |
| 112 return 0; | |
| 113 } | |
| 114 | |
| 115 void log_uninitialized_writeln(char *str, size_t len) { | |
| 116 if(ui_buffer == NULL) { | |
| 117 ui_buffer = sbuf_new(1024); | |
| 118 if(ui_buffer == NULL) { | |
| 119 return; /* TODO: critical error, exit */ | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 sstr_t s; | |
| 124 s.ptr = str; | |
| 125 s.length = len; | |
| 126 | |
| 127 sbuf_append(ui_buffer, s); | |
| 128 sbuf_put(ui_buffer, '\n'); | |
| 129 } | |
| 130 | |
| 131 void log_file_writeln(char *str, size_t len) { | |
| 132 if(!is_initialized) { | |
| 133 log_uninitialized_writeln(str, len); | |
| 134 } | |
| 135 | |
| 136 struct iovec io[] = { | |
| 137 { str, len }, | |
| 138 { "\n", 1} | |
| 139 }; | |
| 140 | |
| 141 writev(log_file_fd, io, 2); /* TODO: aio */ | |
| 142 } | |
| 143 | |
| 144 sstr_t log_get_prefix(int level) { | |
| 145 time_t t = time(NULL); | |
| 146 | |
| 147 sstr_t d; | |
| 148 d.ptr = NULL; | |
| 149 d.length = 0; | |
| 150 | |
| 151 struct tm date; | |
| 152 localtime_r(&t, &date); | |
| 153 | |
| 154 char *buf = malloc(64); | |
| 155 int len = snprintf( | |
| 156 buf, | |
| 157 64, | |
| 158 "[%02d/%s/%d:%02d:%02d:%02d] %s : ", | |
| 159 date.tm_mday, | |
| 160 log_date_month[date.tm_mon], | |
| 161 1900 + date.tm_year, | |
| 162 date.tm_hour, | |
| 163 date.tm_min, | |
| 164 date.tm_sec, | |
| 165 log_levels[level]); | |
| 166 | |
| 167 if(len > 0) { | |
| 168 d.ptr = buf; | |
| 169 d.length = len; | |
| 170 } | |
| 171 | |
| 172 return d; | |
| 173 } | |
| 174 | |
| 175 | |
| 176 /* | |
| 177 * log api functions | |
| 178 */ | |
| 179 | |
| 180 int log_ereport(int degree, const char *format, ...) { | |
| 181 if(degree > log_level) { | |
| 182 return 0; | |
| 183 } | |
| 184 | |
| 185 sstr_t lmsg; | |
| 186 lmsg.ptr = NULL; | |
| 187 va_list ap; | |
| 188 va_start(ap, format); | |
| 189 | |
| 190 /* create log message prefix */ | |
| 191 sstr_t lpre = log_get_prefix(degree); | |
| 192 | |
| 193 /* format message */ | |
| 194 int len = vasprintf(&lmsg.ptr, format, ap); | |
| 195 lmsg.length = len; | |
| 196 | |
| 197 /* create message string */ | |
| 198 sstr_t message; | |
| 199 message.length = lpre.length + len; | |
| 200 message.ptr = malloc(message.length + 1); | |
| 201 | |
| 202 message = sstrncat(2, message, lpre, lmsg); | |
| 203 | |
| 204 /* write message to the log file */ | |
| 205 log_file_writeln(message.ptr, message.length); | |
| 206 | |
| 207 /* cleanup */ | |
| 208 free(lmsg.ptr); | |
| 209 free(message.ptr); | |
| 210 | |
| 211 return 0; | |
| 212 } |
