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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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484
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11 static char *ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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0
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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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484
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18 ngx_error_log,
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0
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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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484
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56 ngx_null_string,
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482
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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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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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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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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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484
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104 p = ngx_slprintf(p, last, " [%V] ", &err_levels[level]);
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105
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106 /* pid#tid */
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484
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107 p = ngx_slprintf(p, last, "%P#" NGX_TID_T_FMT ": ",
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270
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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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484
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111 p = ngx_slprintf(p, last, "*%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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484
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119 p = ngx_vslprintf(p, last, fmt, args);
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0
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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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484
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124 p = ngx_vslprintf(p, last, 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 p = ngx_log_errno(p, last, err);
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0
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130 }
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131
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132 if (level != NGX_LOG_DEBUG && log->handler) {
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32
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133 p = log->handler(log, p, last - p);
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0
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134 }
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135
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120
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136 if (p > last - NGX_LINEFEED_SIZE) {
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137 p = last - NGX_LINEFEED_SIZE;
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10
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138 }
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139
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120
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140 ngx_linefeed(p);
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16
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141
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418
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142 (void) ngx_write_fd(log->file->fd, errstr, p - errstr);
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482
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143
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144 if (!ngx_use_stderr
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145 || level > NGX_LOG_WARN
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146 || log->file->fd == ngx_stderr)
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147 {
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148 return;
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149 }
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150
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610
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151 msg -= (7 + err_levels[level].len + 3);
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482
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152
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610
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153 (void) ngx_sprintf(msg, "nginx: [%V] ", &err_levels[level]);
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482
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154
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484
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155 (void) ngx_write_console(ngx_stderr, msg, p - msg);
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0
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156 }
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157
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158
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4
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159 #if !(NGX_HAVE_VARIADIC_MACROS)
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0
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160
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52
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161 void ngx_cdecl
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162 ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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163 const char *fmt, ...)
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0
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164 {
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10
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165 va_list args;
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0
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166
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167 if (log->log_level >= level) {
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168 va_start(args, fmt);
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169 ngx_log_error_core(level, log, err, fmt, args);
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170 va_end(args);
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171 }
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172 }
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173
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174
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52
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175 void ngx_cdecl
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176 ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
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0
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177 {
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10
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178 va_list args;
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0
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179
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180 va_start(args, fmt);
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181 ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
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182 va_end(args);
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183 }
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184
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185 #endif
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186
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187
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482
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188 void ngx_cdecl
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189 ngx_log_abort(ngx_err_t err, const char *fmt, ...)
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480
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190 {
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482
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191 u_char *p;
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192 va_list args;
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193 u_char errstr[NGX_MAX_CONF_ERRSTR];
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194
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195 va_start(args, fmt);
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196 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
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197 va_end(args);
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198
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199 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err,
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200 "%*s", p - errstr, errstr);
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480
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201 }
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202
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203
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204 void ngx_cdecl
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482
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205 ngx_log_stderr(ngx_err_t err, const char *fmt, ...)
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258
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206 {
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482
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207 u_char *p, *last;
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480
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208 va_list args;
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209 u_char errstr[NGX_MAX_ERROR_STR];
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210
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484
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211 last = errstr + NGX_MAX_ERROR_STR;
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604
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212 p = errstr + 7;
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213
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214 ngx_memcpy(errstr, "nginx: ", 7);
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480
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215
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484
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216 va_start(args, fmt);
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604
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217 p = ngx_vslprintf(p, last, fmt, args);
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484
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218 va_end(args);
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480
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219
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482
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220 if (err) {
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484
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221 p = ngx_log_errno(p, last, err);
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222 }
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482
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223
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484
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224 if (p > last - NGX_LINEFEED_SIZE) {
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225 p = last - NGX_LINEFEED_SIZE;
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482
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226 }
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227
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480
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228 ngx_linefeed(p);
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229
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484
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230 (void) ngx_write_console(ngx_stderr, errstr, p - errstr);
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231 }
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232
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233
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234 u_char *
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235 ngx_log_errno(u_char *buf, u_char *last, ngx_err_t err)
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236 {
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237 if (buf > last - 50) {
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238
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239 /* leave a space for an error code */
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240
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241 buf = last - 50;
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242 *buf++ = '.';
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243 *buf++ = '.';
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244 *buf++ = '.';
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245 }
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246
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247 #if (NGX_WIN32)
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248 buf = ngx_slprintf(buf, last, ((unsigned) err < 0x80000000)
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249 ? " (%d: " : " (%Xd: ", err);
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250 #else
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251 buf = ngx_slprintf(buf, last, " (%d: ", err);
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252 #endif
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253
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604
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254 buf = ngx_strerror(err, buf, last - buf);
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484
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255
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256 if (buf < last) {
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257 *buf++ = ')';
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258 }
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259
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260 return buf;
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258
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261 }
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262
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263
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52
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264 ngx_log_t *
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482
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265 ngx_log_init(u_char *prefix)
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0
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266 {
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482
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267 u_char *p, *name;
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268 size_t nlen, plen;
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269
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270 ngx_log.file = &ngx_log_file;
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10
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271 ngx_log.log_level = NGX_LOG_NOTICE;
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0
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272
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482
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273 name = (u_char *) NGX_ERROR_LOG_PATH;
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274
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275 /*
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276 * we use ngx_strlen() here since BCC warns about
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277 * condition is always false and unreachable code
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278 */
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279
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280 nlen = ngx_strlen(name);
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281
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282 if (nlen == 0) {
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283 ngx_log_file.fd = ngx_stderr;
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284 return &ngx_log;
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285 }
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286
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287 p = NULL;
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288
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10
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289 #if (NGX_WIN32)
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482
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290 if (name[1] != ':') {
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291 #else
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292 if (name[0] != '/') {
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293 #endif
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0
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294
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482
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295 if (prefix) {
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296 plen = ngx_strlen(prefix);
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297
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484
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298 } else {
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482
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299 #ifdef NGX_PREFIX
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300 prefix = (u_char *) NGX_PREFIX;
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301 plen = ngx_strlen(prefix);
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484
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302 #else
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303 plen = 0;
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482
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304 #endif
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305 }
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188
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306
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482
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307 if (plen) {
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308 name = malloc(plen + nlen + 2);
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309 if (name == NULL) {
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310 return NULL;
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311 }
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312
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313 p = ngx_cpymem(name, prefix, plen);
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0
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314
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482
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315 if (!ngx_path_separator(*(p - 1))) {
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316 *p++ = '/';
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317 }
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318
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319 ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
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320
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321 p = name;
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322 }
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10
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323 }
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0
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324
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482
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325 ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
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326 NGX_FILE_CREATE_OR_OPEN,
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327 NGX_FILE_DEFAULT_ACCESS);
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0
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328
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482
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329 if (ngx_log_file.fd == NGX_INVALID_FILE) {
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330 ngx_log_stderr(ngx_errno,
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616
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331 "[alert] could not open error log file: "
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482
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332 ngx_open_file_n " \"%s\" failed", name);
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333 #if (NGX_WIN32)
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334 ngx_event_log(ngx_errno,
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335 "could not open error log file: "
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336 ngx_open_file_n " \"%s\" failed", name);
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337 #endif
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0
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338
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482
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339 ngx_log_file.fd = ngx_stderr;
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340 }
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341
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342 if (p) {
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343 ngx_free(p);
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344 }
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0
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345
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346 return &ngx_log;
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347 }
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348
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349
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52
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350 ngx_log_t *
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484
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351 ngx_log_create(ngx_cycle_t *cycle, ngx_str_t *name)
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0
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352 {
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353 ngx_log_t *log;
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354
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50
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355 log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
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356 if (log == NULL) {
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0
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357 return NULL;
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358 }
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359
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50
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360 log->file = ngx_conf_open_file(cycle, name);
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361 if (log->file == NULL) {
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0
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362 return NULL;
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363 }
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364
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365 return log;
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366 }
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367
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368
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52
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369 char *
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484
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370 ngx_log_set_levels(ngx_conf_t *cf, ngx_log_t *log)
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0
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371 {
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634
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372 ngx_uint_t i, n, d, found;
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0
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373 ngx_str_t *value;
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374
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375 value = cf->args->elts;
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376
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377 for (i = 2; i < cf->args->nelts; i++) {
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634
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378 found = 0;
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0
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379
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380 for (n = 1; n <= NGX_LOG_DEBUG; n++) {
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482
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381 if (ngx_strcmp(value[i].data, err_levels[n].data) == 0) {
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0
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382
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383 if (log->log_level != 0) {
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384 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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385 "duplicate log level \"%V\"",
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386 &value[i]);
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0
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387 return NGX_CONF_ERROR;
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388 }
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389
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390 log->log_level = n;
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634
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391 found = 1;
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392 break;
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0
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393 }
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394 }
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395
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396 for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
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397 if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
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398 if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
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399 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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400 "invalid log level \"%V\"",
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401 &value[i]);
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0
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402 return NGX_CONF_ERROR;
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403 }
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404
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405 log->log_level |= d;
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634
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406 found = 1;
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407 break;
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0
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408 }
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409 }
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410
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411
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634
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412 if (!found) {
|
|
0
|
413 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
482
|
414 "invalid log level \"%V\"", &value[i]);
|
|
0
|
415 return NGX_CONF_ERROR;
|
|
|
416 }
|
|
|
417 }
|
|
|
418
|
|
484
|
419 if (log->log_level == NGX_LOG_DEBUG) {
|
|
0
|
420 log->log_level = NGX_LOG_DEBUG_ALL;
|
|
|
421 }
|
|
|
422
|
|
|
423 return NGX_CONF_OK;
|
|
|
424 }
|
|
|
425
|
|
|
426
|
|
52
|
427 static char *
|
|
484
|
428 ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
429 {
|
|
484
|
430 ngx_str_t *value, name;
|
|
|
431
|
|
|
432 if (cf->cycle->new_log.file) {
|
|
|
433 return "is duplicate";
|
|
|
434 }
|
|
0
|
435
|
|
|
436 value = cf->args->elts;
|
|
|
437
|
|
484
|
438 if (ngx_strcmp(value[1].data, "stderr") == 0) {
|
|
570
|
439 ngx_str_null(&name);
|
|
0
|
440
|
|
|
441 } else {
|
|
484
|
442 name = value[1];
|
|
|
443 }
|
|
0
|
444
|
|
484
|
445 cf->cycle->new_log.file = ngx_conf_open_file(cf->cycle, &name);
|
|
|
446 if (cf->cycle->new_log.file == NULL) {
|
|
|
447 return NULL;
|
|
0
|
448 }
|
|
|
449
|
|
484
|
450 if (cf->args->nelts == 2) {
|
|
|
451 cf->cycle->new_log.log_level = NGX_LOG_ERR;
|
|
|
452 return NGX_CONF_OK;
|
|
|
453 }
|
|
|
454
|
|
|
455 cf->cycle->new_log.log_level = 0;
|
|
|
456
|
|
|
457 return ngx_log_set_levels(cf, &cf->cycle->new_log);
|
|
0
|
458 }
|
