src/server/daemon/log.c

Mon, 09 Sep 2013 12:15:54 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Mon, 09 Sep 2013 12:15:54 +0200
changeset 93
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parent 91
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child 99
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permissions
-rw-r--r--

fixed solaris build

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #ifdef __gnu_linux__
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30 #define _GNU_SOURCE
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31 #endif
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32
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33 #include <stdio.h>
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34 #include <stdlib.h>
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35 #include <string.h>
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36 #include <unistd.h>
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37 #include <aio.h>
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38 #include <time.h>
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39
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40 #include "log.h"
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41 #include "../util/strbuf.h"
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42 #include "../util/io.h"
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43 #include "../util/atomic.h"
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44
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45 #include <ucx/map.h>
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46
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47 static int is_initialized = 0;
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48
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49 static int log_file_fd;
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50 static int log_level = 0;
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51
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52 /*
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53 * if the log file is uninitialized, output is written to the ui_buffer
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54 */
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55 static sbuf_t *ui_buffer = NULL;
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56
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57 /*
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58 * access log file map
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59 */
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60 static UcxMap *access_log_files; // map of LogFile*
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61
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62
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63 static char *log_date_month[] = {
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64 "Jan",
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65 "Feb",
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66 "Mar",
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67 "Apr",
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68 "May",
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69 "Jun",
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70 "Jul",
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71 "Aug",
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72 "Sep",
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73 "Oct",
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74 "Nov",
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75 "Dec"
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76 };
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78 static char *log_levels[] = {
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79 "warning",
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80 "config",
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81 "security",
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82 "failure",
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83 "catastrophe",
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84 "info",
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85 "verbose"
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86 };
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87
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88 static int can_log[] = {
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89 1, // warning
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90 1, // config
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91 1, // security
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92 1, // failure
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93 1, // catastrophe
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94 1, // info
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95 0 // verbose
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96 };
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97
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98 int init_log_file(LogConfig *cfg) {
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99 if(is_initialized) {
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100 return 0;
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101 }
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102
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103 /* open the log file */
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104 mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
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105 log_file_fd = open(cfg->file, O_WRONLY | O_CREAT | O_APPEND, mode);
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106 if(log_file_fd == -1) {
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107 return -1;
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108 }
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109
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110 if(!strcmp(cfg->level, "ERROR")) {
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111 can_log[LOG_WARN] = 0;
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112 can_log[LOG_INFORM] = 0;
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113 } else if(!strcmp(cfg->level, "WARNING")) {
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114 can_log[LOG_INFORM] = 0;
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115 } else if(!strcmp(cfg->level, "INFO")) {
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116
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117 }
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118
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119 if(cfg->log_stdout) {
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120 // TODO
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121 }
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122 if(cfg->log_stderr) {
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123 // TODO
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124 }
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125
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126
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127 is_initialized = 1;
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128
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129 /* if ui_buffer is not NULL, write it to the log file */
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130 if(ui_buffer) {
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131 size_t len = ui_buffer->length;
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132 size_t r;
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133 while(len > 0) {
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134 r = write(log_file_fd, ui_buffer->ptr, ui_buffer->length);
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135 len -= r;
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136 }
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137
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138 sbuf_free(ui_buffer);
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139 }
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140
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141 return 0;
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142 }
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143
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144 void log_uninitialized_writeln(char *str, size_t len) {
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145 if(ui_buffer == NULL) {
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146 ui_buffer = sbuf_new(1024);
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147 if(ui_buffer == NULL) {
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148 return; /* TODO: critical error, exit */
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149 }
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150 }
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151
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152 sstr_t s;
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153 s.ptr = str;
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154 s.length = len;
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155
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156 sbuf_append(ui_buffer, s);
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157 sbuf_put(ui_buffer, '\n');
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158 }
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159
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160 void log_file_writeln(char *str, size_t len) {
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161 if(!is_initialized) {
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162 log_uninitialized_writeln(str, len);
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163 }
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164
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165 struct iovec io[] = {
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166 { str, len },
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167 { "\n", 1}
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168 };
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169
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170 writev(log_file_fd, io, 2); /* TODO: aio */
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171 }
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172
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173 sstr_t log_get_prefix(int level) {
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174 time_t t = time(NULL);
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175
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176 sstr_t d;
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177 d.ptr = NULL;
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178 d.length = 0;
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179
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180 struct tm date;
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181 localtime_r(&t, &date);
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182
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183 char *buf = malloc(64);
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184 int len = snprintf(
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185 buf,
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186 64,
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187 "[%02d/%s/%d:%02d:%02d:%02d] %s : ",
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188 date.tm_mday,
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189 log_date_month[date.tm_mon],
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190 1900 + date.tm_year,
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191 date.tm_hour,
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192 date.tm_min,
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193 date.tm_sec,
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194 log_levels[level]);
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195
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196 if(len > 0) {
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197 d.ptr = buf;
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198 d.length = len;
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199 }
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200
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201 return d;
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202 }
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203
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204
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205 /*
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206 * log api functions
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207 */
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208
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209 int log_ereport(int degree, const char *format, ...) {
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210 va_list args;
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211 va_start(args, format);
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212 int ret = log_ereport_v(degree, format, args);
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213 va_end(args);
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214 return ret;
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215 }
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216
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217 int log_ereport_v(int degree, const char *format, va_list args) {
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218 if(degree > 6) {
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219 return 0;
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220 }
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221 if(degree > 0 && !can_log[degree]) {
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222 return 0;
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223 }
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224
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225 sstr_t lmsg;
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226 lmsg.ptr = NULL;
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227
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228 /* create log message prefix */
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229 sstr_t lpre = log_get_prefix(degree);
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230
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231 /* format message */
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232 int len = vasprintf(&lmsg.ptr, format, args);
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233 lmsg.length = len;
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234
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235 /* create message string */
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236 sstr_t message;
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237 message.length = lpre.length + len;
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238 message.ptr = malloc(message.length + 1);
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239
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240 message = sstrncat(message, 2, lpre, lmsg);
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241
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242 /* write message to the log file */
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243 log_file_writeln(message.ptr, message.length);
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244
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245 /* cleanup */
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246 free(lmsg.ptr);
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247 free(lpre.ptr);
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248 free(message.ptr);
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249
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250 return 0;
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251 }
45
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252
82
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253 int log_error(int degree, const char *func, Session *sn, Request *rq,
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254 const char *format, ...)
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255 {
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256 va_list args;
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257 va_start(args, format);
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258 int ret = log_error_v(degree, func, sn, rq, format, args);
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259 va_end(args);
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260 return ret;
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261 }
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262
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263 int log_error_v(int degree, const char *func, Session *sn, Request *rq,
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264 const char *format, va_list args)
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265 {
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266 // TODO: implement
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267 return log_ereport(degree, format, args);
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268 }
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269
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270
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271 void ws_log_assert(const char *file, const char *func, int line) {
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272 log_ereport(
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273 LOG_CATASTROPHE,
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274 "assertion failed: %s: %s:%d",
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275 file,
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276 func,
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277 line);
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278 exit(-1);
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279 }
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280
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281
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282 /*
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283 * access log
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284 * This source file only manages access log files. IO is performed directly
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285 * by AddLog safs.
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286 */
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287 LogFile* get_access_log_file(sstr_t file) {
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288 if(!access_log_files) {
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289 access_log_files = ucx_map_new(4);
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290 }
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291
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292 if(file.ptr == NULL || file.length == 0) {
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293 return NULL;
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294 }
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295
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296 LogFile *log = ucx_map_sstr_get(access_log_files, file);
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297 if(log != NULL) {
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298 ws_atomic_inc32(&log->ref);
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299 return log;
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300 }
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301
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302 // the log file is not opened
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303 // check first if we can open it
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304 FILE *out = fopen(file.ptr, "a");
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305 if(out == NULL) {
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306 return NULL;
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307 }
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308
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309 // create LogFile object
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310 log = calloc(1, sizeof(LogFile));
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311 log->file = out;
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312 log->ref = 1;
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313
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314 // add access log to the map
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315 ucx_map_sstr_put(access_log_files, file, log);
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316
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317 return log;
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318 }
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diff changeset
319

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