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0
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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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0
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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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0
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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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482
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51 static ngx_open_file_t ngx_log_file;
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52 ngx_uint_t ngx_use_stderr = 1;
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0
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53
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54
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482
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55 static ngx_str_t err_levels[] = {
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56 ngx_string("stderr"),
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57 ngx_string("emerg"),
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58 ngx_string("alert"),
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59 ngx_string("crit"),
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60 ngx_string("error"),
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61 ngx_string("warn"),
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62 ngx_string("notice"),
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63 ngx_string("info"),
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64 ngx_string("debug")
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0
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65 };
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66
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67 static const char *debug_levels[] = {
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68 "debug_core", "debug_alloc", "debug_mutex", "debug_event",
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290
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69 "debug_http", "debug_mail", "debug_mysql"
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0
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70 };
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71
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72
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4
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73 #if (NGX_HAVE_VARIADIC_MACROS)
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52
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74
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75 void
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76 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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77 const char *fmt, ...)
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78
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0
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79 #else
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52
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80
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81 void
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82 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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83 const char *fmt, va_list args)
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84
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0
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85 #endif
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86 {
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4
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87 #if (NGX_HAVE_VARIADIC_MACROS)
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10
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88 va_list args;
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0
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89 #endif
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482
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90 u_char *p, *last, *msg;
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91 u_char errstr[NGX_MAX_ERROR_STR];
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0
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92
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93 if (log->file->fd == NGX_INVALID_FILE) {
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94 return;
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95 }
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96
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10
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97 last = errstr + NGX_MAX_ERROR_STR;
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98
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99 ngx_memcpy(errstr, ngx_cached_err_log_time.data,
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100 ngx_cached_err_log_time.len);
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101
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10
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102 p = errstr + ngx_cached_err_log_time.len;
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103
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482
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104 p = ngx_snprintf(p, last - p, " [%V] ", &err_levels[level]);
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0
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105
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106 /* pid#tid */
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270
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107 p = ngx_snprintf(p, last - p, "%P#" NGX_TID_T_FMT ": ",
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108 ngx_log_pid, ngx_log_tid);
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0
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109
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32
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110 if (log->connection) {
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270
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111 p = ngx_snprintf(p, last - p, "*%uA ", log->connection);
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32
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112 }
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113
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482
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114 msg = p;
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115
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4
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116 #if (NGX_HAVE_VARIADIC_MACROS)
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117
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118 va_start(args, fmt);
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119 p = ngx_vsnprintf(p, last - p, fmt, args);
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120 va_end(args);
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121
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122 #else
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123
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10
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124 p = ngx_vsnprintf(p, last - p, fmt, args);
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0
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125
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126 #endif
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127
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128 if (err) {
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129
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130 if (p > last - 50) {
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0
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131
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132 /* leave a space for an error code */
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133
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134 p = last - 50;
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135 *p++ = '.';
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136 *p++ = '.';
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137 *p++ = '.';
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0
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138 }
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139
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10
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140 #if (NGX_WIN32)
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430
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141 p = ngx_snprintf(p, last - p, ((unsigned) err < 0x80000000)
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142 ? " (%d: " : " (%Xd: ", err);
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0
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143 #else
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10
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144 p = ngx_snprintf(p, last - p, " (%d: ", err);
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0
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145 #endif
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146
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10
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147 p = ngx_strerror_r(err, p, last - p);
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0
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148
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10
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149 if (p < last) {
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150 *p++ = ')';
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0
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151 }
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152 }
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153
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154 if (level != NGX_LOG_DEBUG && log->handler) {
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32
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155 p = log->handler(log, p, last - p);
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0
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156 }
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157
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120
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158 if (p > last - NGX_LINEFEED_SIZE) {
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159 p = last - NGX_LINEFEED_SIZE;
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10
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160 }
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161
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120
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162 ngx_linefeed(p);
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16
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163
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418
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164 (void) ngx_write_fd(log->file->fd, errstr, p - errstr);
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482
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165
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166 if (!ngx_use_stderr
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167 || level > NGX_LOG_WARN
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168 || log->file->fd == ngx_stderr)
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169 {
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170 return;
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171 }
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172
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173 msg -= (err_levels[level].len + 4);
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174
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175 (void) ngx_sprintf(msg, "[%V]: ", &err_levels[level]);
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176
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177 (void) ngx_write_fd(ngx_stderr, msg, p - msg);
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0
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178 }
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179
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180
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4
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181 #if !(NGX_HAVE_VARIADIC_MACROS)
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0
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182
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52
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183 void ngx_cdecl
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184 ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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185 const char *fmt, ...)
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0
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186 {
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10
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187 va_list args;
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0
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188
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189 if (log->log_level >= level) {
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190 va_start(args, fmt);
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191 ngx_log_error_core(level, log, err, fmt, args);
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192 va_end(args);
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193 }
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194 }
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195
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196
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52
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197 void ngx_cdecl
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198 ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
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0
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199 {
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10
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200 va_list args;
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0
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201
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202 va_start(args, fmt);
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203 ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
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204 va_end(args);
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205 }
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206
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207 #endif
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208
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209
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482
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210 void ngx_cdecl
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211 ngx_log_abort(ngx_err_t err, const char *fmt, ...)
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480
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212 {
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482
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213 u_char *p;
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214 va_list args;
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215 u_char errstr[NGX_MAX_CONF_ERRSTR];
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216
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217 va_start(args, fmt);
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218 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
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219 va_end(args);
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220
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221 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err,
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222 "%*s", p - errstr, errstr);
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480
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223 }
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224
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225
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226 void ngx_cdecl
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482
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227 ngx_log_stderr(ngx_err_t err, const char *fmt, ...)
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258
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228 {
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482
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229 u_char *p, *last;
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480
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230 va_list args;
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231 u_char errstr[NGX_MAX_ERROR_STR];
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232
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233 va_start(args, fmt);
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234 p = ngx_vsnprintf(errstr, NGX_MAX_ERROR_STR, fmt, args);
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235 va_end(args);
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236
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237 if (p > errstr + NGX_MAX_ERROR_STR - NGX_LINEFEED_SIZE) {
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238 p = errstr + NGX_MAX_ERROR_STR - NGX_LINEFEED_SIZE;
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239 }
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240
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482
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241 if (err) {
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242
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243 last = errstr + NGX_MAX_ERROR_STR;
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244
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245 if (p > last - 50) {
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246
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247 /* leave a space for an error code */
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248
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249 p = last - 50;
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250 *p++ = '.';
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251 *p++ = '.';
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252 *p++ = '.';
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253 }
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254
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255 #if (NGX_WIN32)
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256 p = ngx_snprintf(p, last - p, ((unsigned) err < 0x80000000)
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257 ? " (%d: " : " (%Xd: ", err);
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258 #else
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259 p = ngx_snprintf(p, last - p, " (%d: ", err);
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260 #endif
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261
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262 p = ngx_strerror_r(err, p, last - p);
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263
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264 if (p < last) {
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265 *p++ = ')';
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266 }
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267 }
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268
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480
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269 ngx_linefeed(p);
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270
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482
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271 (void) ngx_write_fd(ngx_stderr, errstr, p - errstr);
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258
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272 }
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273
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274
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52
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275 ngx_log_t *
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482
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276 ngx_log_init(u_char *prefix)
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0
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277 {
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482
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278 u_char *p, *name;
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279 size_t nlen, plen;
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280
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281 ngx_log.file = &ngx_log_file;
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10
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282 ngx_log.log_level = NGX_LOG_NOTICE;
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0
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283
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482
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284 name = (u_char *) NGX_ERROR_LOG_PATH;
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285
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286 /*
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287 * we use ngx_strlen() here since BCC warns about
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288 * condition is always false and unreachable code
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289 */
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290
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291 nlen = ngx_strlen(name);
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292
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293 if (nlen == 0) {
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294 ngx_log_file.fd = ngx_stderr;
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295 return &ngx_log;
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296 }
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297
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298 p = NULL;
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299
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10
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300 #if (NGX_WIN32)
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482
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301 if (name[1] != ':') {
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302 #else
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303 if (name[0] != '/') {
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304 #endif
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305 plen = 0;
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0
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306
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482
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307 if (prefix) {
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308 plen = ngx_strlen(prefix);
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309
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310 #ifdef NGX_PREFIX
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311 } else {
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312 prefix = (u_char *) NGX_PREFIX;
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313 plen = ngx_strlen(prefix);
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314 #endif
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315 }
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188
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316
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482
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317 if (plen) {
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318 name = malloc(plen + nlen + 2);
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319 if (name == NULL) {
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320 return NULL;
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321 }
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322
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323 p = ngx_cpymem(name, prefix, plen);
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0
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324
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482
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325 if (!ngx_path_separator(*(p - 1))) {
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326 *p++ = '/';
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327 }
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328
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329 ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
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330
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331 p = name;
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332 }
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10
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333 }
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0
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334
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482
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335 ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
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336 NGX_FILE_CREATE_OR_OPEN,
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337 NGX_FILE_DEFAULT_ACCESS);
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0
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338
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482
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339 if (ngx_log_file.fd == NGX_INVALID_FILE) {
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340 ngx_log_stderr(ngx_errno,
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341 "[alert]: could not open error log file: "
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342 ngx_open_file_n " \"%s\" failed", name);
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343 #if (NGX_WIN32)
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344 ngx_event_log(ngx_errno,
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345 "could not open error log file: "
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346 ngx_open_file_n " \"%s\" failed", name);
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347 #endif
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0
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348
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482
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349 ngx_log_file.fd = ngx_stderr;
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350 }
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351
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352 if (p) {
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353 ngx_free(p);
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354 }
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0
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355
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356 return &ngx_log;
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357 }
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358
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359
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52
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360 ngx_log_t *
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482
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361 ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_str_t *name)
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0
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362 {
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363 ngx_log_t *log;
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364
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50
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365 log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
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366 if (log == NULL) {
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0
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367 return NULL;
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368 }
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369
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50
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370 log->file = ngx_conf_open_file(cycle, name);
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371 if (log->file == NULL) {
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0
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372 return NULL;
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373 }
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374
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375 return log;
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376 }
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377
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378
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52
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379 char *
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380 ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log)
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0
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381 {
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382 ngx_uint_t i, n, d;
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383 ngx_str_t *value;
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384
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385 value = cf->args->elts;
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386
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387 for (i = 2; i < cf->args->nelts; i++) {
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388
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389 for (n = 1; n <= NGX_LOG_DEBUG; n++) {
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482
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390 if (ngx_strcmp(value[i].data, err_levels[n].data) == 0) {
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0
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391
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392 if (log->log_level != 0) {
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393 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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394 "duplicate log level \"%V\"",
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395 &value[i]);
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0
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396 return NGX_CONF_ERROR;
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397 }
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398
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399 log->log_level = n;
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400 continue;
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401 }
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402 }
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403
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404 for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
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405 if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
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406 if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
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407 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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408 "invalid log level \"%V\"",
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409 &value[i]);
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0
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410 return NGX_CONF_ERROR;
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411 }
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412
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413 log->log_level |= d;
|
|
|
414 }
|
|
|
415 }
|
|
|
416
|
|
|
417
|
|
|
418 if (log->log_level == 0) {
|
|
|
419 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
482
|
420 "invalid log level \"%V\"", &value[i]);
|
|
0
|
421 return NGX_CONF_ERROR;
|
|
|
422 }
|
|
|
423 }
|
|
|
424
|
|
438
|
425 if (log->log_level == 0) {
|
|
|
426 log->log_level = NGX_LOG_ERR;
|
|
|
427
|
|
|
428 } else if (log->log_level == NGX_LOG_DEBUG) {
|
|
0
|
429 log->log_level = NGX_LOG_DEBUG_ALL;
|
|
|
430 }
|
|
|
431
|
|
|
432 return NGX_CONF_OK;
|
|
|
433 }
|
|
|
434
|
|
|
435
|
|
52
|
436 static char *
|
|
|
437 ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
438 {
|
|
|
439 ngx_str_t *value;
|
|
|
440
|
|
|
441 value = cf->args->elts;
|
|
|
442
|
|
|
443 if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) {
|
|
482
|
444 cf->cycle->new_log->file->fd = ngx_stderr;
|
|
0
|
445 cf->cycle->new_log->file->name.len = 0;
|
|
|
446 cf->cycle->new_log->file->name.data = NULL;
|
|
|
447
|
|
|
448 } else {
|
|
|
449 cf->cycle->new_log->file->name = value[1];
|
|
|
450
|
|
324
|
451 if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name, 0)
|
|
454
|
452 != NGX_OK)
|
|
0
|
453 {
|
|
|
454 return NGX_CONF_ERROR;
|
|
|
455 }
|
|
|
456 }
|
|
|
457
|
|
|
458 return ngx_set_error_log_levels(cf, cf->cycle->new_log);
|
|
|
459 }
|
