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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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11 static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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12
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13
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14 static ngx_command_t ngx_errlog_commands[] = {
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15
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16 {ngx_string("error_log"),
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17 NGX_MAIN_CONF|NGX_CONF_1MORE,
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18 ngx_set_error_log,
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19 0,
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20 0,
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21 NULL},
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22
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23 ngx_null_command
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24 };
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25
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26
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27 static ngx_core_module_t ngx_errlog_module_ctx = {
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28 ngx_string("errlog"),
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126
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29 NULL,
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0
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30 NULL
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31 };
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32
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33
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34 ngx_module_t ngx_errlog_module = {
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58
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35 NGX_MODULE_V1,
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36 &ngx_errlog_module_ctx, /* module context */
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37 ngx_errlog_commands, /* module directives */
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38 NGX_CORE_MODULE, /* module type */
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90
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39 NULL, /* init master */
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40 NULL, /* init module */
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90
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41 NULL, /* init process */
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42 NULL, /* init thread */
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43 NULL, /* exit thread */
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44 NULL, /* exit process */
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45 NULL, /* exit master */
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46 NGX_MODULE_V1_PADDING
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0
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47 };
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48
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49
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50 static ngx_log_t ngx_log;
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51 static ngx_open_file_t ngx_stderr;
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52
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53
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54 static const char *err_levels[] = {
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55 "stderr", "emerg", "alert", "crit", "error",
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56 "warn", "notice", "info", "debug"
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57 };
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58
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59 static const char *debug_levels[] = {
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60 "debug_core", "debug_alloc", "debug_mutex", "debug_event",
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61 "debug_http", "debug_imap"
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62 };
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63
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64
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4
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65 #if (NGX_HAVE_VARIADIC_MACROS)
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52
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66
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67 void
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68 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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69 const char *fmt, ...)
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70
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0
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71 #else
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52
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72
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73 void
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74 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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75 const char *fmt, va_list args)
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76
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77 #endif
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78 {
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4
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79 #if (NGX_HAVE_VARIADIC_MACROS)
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80 va_list args;
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81 #endif
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10
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82 u_char errstr[NGX_MAX_ERROR_STR], *p, *last;
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83
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84 if (log->file->fd == NGX_INVALID_FILE) {
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85 return;
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86 }
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87
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10
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88 last = errstr + NGX_MAX_ERROR_STR;
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89
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90 ngx_memcpy(errstr, ngx_cached_err_log_time.data,
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91 ngx_cached_err_log_time.len);
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92
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93 p = errstr + ngx_cached_err_log_time.len;
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94
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95 p = ngx_sprintf(p, " [%s] ", err_levels[level]);
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96
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97 /* pid#tid */
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98 p = ngx_sprintf(p, "%P#" NGX_TID_T_FMT ": ", ngx_log_pid, ngx_log_tid);
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0
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99
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100 if (log->connection) {
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101 p = ngx_sprintf(p, "*%uA ", log->connection);
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32
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102 }
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103
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4
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104 #if (NGX_HAVE_VARIADIC_MACROS)
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105
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106 va_start(args, fmt);
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107 p = ngx_vsnprintf(p, last - p, fmt, args);
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108 va_end(args);
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109
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110 #else
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111
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112 p = ngx_vsnprintf(p, last - p, fmt, args);
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113
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114 #endif
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115
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116 if (err) {
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117
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118 if (p > last - 50) {
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0
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119
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120 /* leave a space for an error code */
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121
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122 p = last - 50;
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123 *p++ = '.';
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124 *p++ = '.';
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125 *p++ = '.';
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126 }
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127
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128 #if (NGX_WIN32)
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129
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130 if ((unsigned) err >= 0x80000000) {
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131 p = ngx_snprintf(p, last - p, " (%Xd: ", err);
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132
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133 } else {
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134 p = ngx_snprintf(p, last - p, " (%d: ", err);
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135 }
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136
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137 #else
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138
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139 p = ngx_snprintf(p, last - p, " (%d: ", err);
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140
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141 #endif
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142
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143 p = ngx_strerror_r(err, p, last - p);
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144
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145 if (p < last) {
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146 *p++ = ')';
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147 }
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148 }
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149
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150 if (level != NGX_LOG_DEBUG && log->handler) {
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151 p = log->handler(log, p, last - p);
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152 }
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153
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120
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154 if (p > last - NGX_LINEFEED_SIZE) {
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155 p = last - NGX_LINEFEED_SIZE;
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156 }
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157
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120
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158 ngx_linefeed(p);
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16
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159
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120
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160 ngx_write_fd(log->file->fd, errstr, p - errstr);
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161 }
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162
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163
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164 #if !(NGX_HAVE_VARIADIC_MACROS)
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165
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52
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166 void ngx_cdecl
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167 ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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168 const char *fmt, ...)
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169 {
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170 va_list args;
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171
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172 if (log->log_level >= level) {
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173 va_start(args, fmt);
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174 ngx_log_error_core(level, log, err, fmt, args);
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175 va_end(args);
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176 }
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177 }
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178
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179
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52
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180 void ngx_cdecl
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181 ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
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182 {
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183 va_list args;
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184
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185 va_start(args, fmt);
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186 ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
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187 va_end(args);
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188 }
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189
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190 #endif
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191
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192
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52
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193 ngx_log_t *
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194 ngx_log_init(void)
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195 {
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196 ngx_log.file = &ngx_stderr;
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197 ngx_log.log_level = NGX_LOG_NOTICE;
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198
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199 #if (NGX_WIN32)
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200
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188
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201 ngx_stderr_fileno = GetStdHandle(STD_ERROR_HANDLE);
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202
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203 ngx_stderr.fd = ngx_open_file(NGX_ERROR_LOG_PATH, NGX_FILE_RDWR,
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204 NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND);
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205
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206 if (ngx_stderr.fd == NGX_INVALID_FILE) {
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207 ngx_message_box("nginx", MB_OK, ngx_errno,
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208 "Could not open error log file: "
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209 ngx_open_file_n " \"" NGX_ERROR_LOG_PATH "\" failed");
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210 return NULL;
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211 }
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212
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213 if (ngx_file_append_mode(ngx_stderr.fd) == NGX_ERROR) {
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214 ngx_message_box("nginx", MB_OK, ngx_errno,
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215 "Could not open error log file: "
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216 ngx_file_append_mode_n " \"" NGX_ERROR_LOG_PATH
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217 "\" failed");
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218 return NULL;
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219 }
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220
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221 #else
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222
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223 ngx_stderr.fd = STDERR_FILENO;
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224
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225 #endif
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226
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227 return &ngx_log;
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228 }
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229
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230
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231 ngx_log_t *
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232 ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args)
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233 {
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234 ngx_log_t *log;
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235 ngx_str_t *value, *name;
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236
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237 if (args) {
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238 value = args->elts;
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239 name = &value[1];
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240
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241 } else {
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242 name = NULL;
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243 }
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244
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245 log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
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246 if (log == NULL) {
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247 return NULL;
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248 }
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249
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50
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250 log->file = ngx_conf_open_file(cycle, name);
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251 if (log->file == NULL) {
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252 return NULL;
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253 }
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254
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255 return log;
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256 }
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257
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258
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259 char *
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260 ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log)
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261 {
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262 ngx_uint_t i, n, d;
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263 ngx_str_t *value;
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264
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265 value = cf->args->elts;
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266
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267 for (i = 2; i < cf->args->nelts; i++) {
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268
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269 for (n = 1; n <= NGX_LOG_DEBUG; n++) {
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270 if (ngx_strcmp(value[i].data, err_levels[n]) == 0) {
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271
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272 if (log->log_level != 0) {
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273 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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274 "invalid log level \"%s\"",
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275 value[i].data);
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276 return NGX_CONF_ERROR;
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277 }
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278
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279 log->log_level = n;
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280 continue;
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281 }
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282 }
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283
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284 for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
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285 if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
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286 if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
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287 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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288 "invalid log level \"%s\"",
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289 value[i].data);
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290 return NGX_CONF_ERROR;
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291 }
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292
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293 log->log_level |= d;
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294 }
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295 }
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296
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297
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298 if (log->log_level == 0) {
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299 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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300 "invalid log level \"%s\"", value[i].data);
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301 return NGX_CONF_ERROR;
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302 }
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303 }
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304
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305 if (log->log_level == NGX_LOG_DEBUG) {
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306 log->log_level = NGX_LOG_DEBUG_ALL;
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307 }
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308
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309 return NGX_CONF_OK;
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310 }
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311
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312
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52
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313 static char *
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314 ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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0
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315 {
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316 ngx_str_t *value;
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317
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318 value = cf->args->elts;
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319
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320 if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) {
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321 cf->cycle->new_log->file->fd = ngx_stderr.fd;
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322 cf->cycle->new_log->file->name.len = 0;
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323 cf->cycle->new_log->file->name.data = NULL;
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324
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325 } else {
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326 cf->cycle->new_log->file->name = value[1];
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327
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328 if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name)
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329 == NGX_ERROR)
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330 {
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331 return NGX_CONF_ERROR;
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332 }
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333 }
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334
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335 return ngx_set_error_log_levels(cf, cf->cycle->new_log);
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336 }
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