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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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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10
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11
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484
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12 static char *ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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0
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13
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14
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15 static ngx_command_t ngx_errlog_commands[] = {
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16
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17 {ngx_string("error_log"),
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18 NGX_MAIN_CONF|NGX_CONF_1MORE,
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484
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19 ngx_error_log,
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0
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20 0,
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21 0,
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22 NULL},
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23
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24 ngx_null_command
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25 };
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26
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27
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28 static ngx_core_module_t ngx_errlog_module_ctx = {
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29 ngx_string("errlog"),
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126
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30 NULL,
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0
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31 NULL
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32 };
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33
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34
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35 ngx_module_t ngx_errlog_module = {
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58
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36 NGX_MODULE_V1,
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0
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37 &ngx_errlog_module_ctx, /* module context */
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38 ngx_errlog_commands, /* module directives */
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39 NGX_CORE_MODULE, /* module type */
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90
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40 NULL, /* init master */
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0
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41 NULL, /* init module */
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90
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42 NULL, /* init process */
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43 NULL, /* init thread */
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44 NULL, /* exit thread */
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45 NULL, /* exit process */
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46 NULL, /* exit master */
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47 NGX_MODULE_V1_PADDING
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0
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48 };
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49
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50
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51 static ngx_log_t ngx_log;
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482
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52 static ngx_open_file_t ngx_log_file;
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53 ngx_uint_t ngx_use_stderr = 1;
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0
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54
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55
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482
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56 static ngx_str_t err_levels[] = {
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484
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57 ngx_null_string,
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482
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58 ngx_string("emerg"),
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59 ngx_string("alert"),
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60 ngx_string("crit"),
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61 ngx_string("error"),
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62 ngx_string("warn"),
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63 ngx_string("notice"),
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64 ngx_string("info"),
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65 ngx_string("debug")
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0
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66 };
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67
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68 static const char *debug_levels[] = {
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69 "debug_core", "debug_alloc", "debug_mutex", "debug_event",
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290
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70 "debug_http", "debug_mail", "debug_mysql"
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0
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71 };
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72
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73
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4
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74 #if (NGX_HAVE_VARIADIC_MACROS)
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52
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75
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76 void
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77 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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78 const char *fmt, ...)
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79
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0
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80 #else
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52
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81
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82 void
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83 ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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84 const char *fmt, va_list args)
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85
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86 #endif
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87 {
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4
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88 #if (NGX_HAVE_VARIADIC_MACROS)
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10
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89 va_list args;
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0
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90 #endif
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482
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91 u_char *p, *last, *msg;
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92 u_char errstr[NGX_MAX_ERROR_STR];
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0
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93
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94 if (log->file->fd == NGX_INVALID_FILE) {
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95 return;
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96 }
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97
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10
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98 last = errstr + NGX_MAX_ERROR_STR;
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99
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100 ngx_memcpy(errstr, ngx_cached_err_log_time.data,
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101 ngx_cached_err_log_time.len);
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102
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10
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103 p = errstr + ngx_cached_err_log_time.len;
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104
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484
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105 p = ngx_slprintf(p, last, " [%V] ", &err_levels[level]);
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106
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107 /* pid#tid */
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484
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108 p = ngx_slprintf(p, last, "%P#" NGX_TID_T_FMT ": ",
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270
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109 ngx_log_pid, ngx_log_tid);
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0
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110
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32
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111 if (log->connection) {
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484
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112 p = ngx_slprintf(p, last, "*%uA ", log->connection);
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32
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113 }
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114
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482
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115 msg = p;
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116
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4
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117 #if (NGX_HAVE_VARIADIC_MACROS)
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118
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119 va_start(args, fmt);
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484
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120 p = ngx_vslprintf(p, last, fmt, args);
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0
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121 va_end(args);
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122
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123 #else
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124
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484
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125 p = ngx_vslprintf(p, last, fmt, args);
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0
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126
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127 #endif
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128
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129 if (err) {
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130 p = ngx_log_errno(p, last, err);
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0
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131 }
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132
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133 if (level != NGX_LOG_DEBUG && log->handler) {
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32
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134 p = log->handler(log, p, last - p);
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0
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135 }
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136
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120
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137 if (p > last - NGX_LINEFEED_SIZE) {
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138 p = last - NGX_LINEFEED_SIZE;
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10
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139 }
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140
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120
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141 ngx_linefeed(p);
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16
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142
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418
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143 (void) ngx_write_fd(log->file->fd, errstr, p - errstr);
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482
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144
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145 if (!ngx_use_stderr
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146 || level > NGX_LOG_WARN
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147 || log->file->fd == ngx_stderr)
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148 {
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149 return;
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150 }
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151
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610
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152 msg -= (7 + err_levels[level].len + 3);
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482
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153
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610
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154 (void) ngx_sprintf(msg, "nginx: [%V] ", &err_levels[level]);
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482
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155
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484
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156 (void) ngx_write_console(ngx_stderr, msg, p - msg);
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0
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157 }
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158
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159
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4
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160 #if !(NGX_HAVE_VARIADIC_MACROS)
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0
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161
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52
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162 void ngx_cdecl
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163 ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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164 const char *fmt, ...)
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0
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165 {
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10
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166 va_list args;
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0
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167
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168 if (log->log_level >= level) {
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169 va_start(args, fmt);
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170 ngx_log_error_core(level, log, err, fmt, args);
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171 va_end(args);
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172 }
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173 }
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174
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175
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52
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176 void ngx_cdecl
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177 ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
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0
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178 {
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10
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179 va_list args;
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0
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180
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181 va_start(args, fmt);
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182 ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
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183 va_end(args);
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184 }
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185
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186 #endif
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187
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188
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482
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189 void ngx_cdecl
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190 ngx_log_abort(ngx_err_t err, const char *fmt, ...)
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480
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191 {
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482
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192 u_char *p;
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193 va_list args;
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194 u_char errstr[NGX_MAX_CONF_ERRSTR];
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195
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196 va_start(args, fmt);
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197 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
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198 va_end(args);
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199
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200 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err,
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201 "%*s", p - errstr, errstr);
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480
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202 }
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203
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204
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205 void ngx_cdecl
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482
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206 ngx_log_stderr(ngx_err_t err, const char *fmt, ...)
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258
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207 {
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482
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208 u_char *p, *last;
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480
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209 va_list args;
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210 u_char errstr[NGX_MAX_ERROR_STR];
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211
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484
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212 last = errstr + NGX_MAX_ERROR_STR;
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604
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213 p = errstr + 7;
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214
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215 ngx_memcpy(errstr, "nginx: ", 7);
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480
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216
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484
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217 va_start(args, fmt);
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604
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218 p = ngx_vslprintf(p, last, fmt, args);
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484
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219 va_end(args);
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480
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220
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482
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221 if (err) {
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484
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222 p = ngx_log_errno(p, last, err);
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223 }
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482
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224
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484
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225 if (p > last - NGX_LINEFEED_SIZE) {
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226 p = last - NGX_LINEFEED_SIZE;
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482
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227 }
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228
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480
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229 ngx_linefeed(p);
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230
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484
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231 (void) ngx_write_console(ngx_stderr, errstr, p - errstr);
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232 }
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233
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234
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235 u_char *
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236 ngx_log_errno(u_char *buf, u_char *last, ngx_err_t err)
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237 {
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238 if (buf > last - 50) {
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239
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240 /* leave a space for an error code */
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241
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242 buf = last - 50;
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243 *buf++ = '.';
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244 *buf++ = '.';
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245 *buf++ = '.';
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246 }
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247
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248 #if (NGX_WIN32)
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249 buf = ngx_slprintf(buf, last, ((unsigned) err < 0x80000000)
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250 ? " (%d: " : " (%Xd: ", err);
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251 #else
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252 buf = ngx_slprintf(buf, last, " (%d: ", err);
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253 #endif
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254
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604
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255 buf = ngx_strerror(err, buf, last - buf);
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484
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256
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257 if (buf < last) {
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258 *buf++ = ')';
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259 }
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260
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261 return buf;
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258
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262 }
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263
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264
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52
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265 ngx_log_t *
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482
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266 ngx_log_init(u_char *prefix)
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0
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267 {
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482
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268 u_char *p, *name;
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269 size_t nlen, plen;
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270
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271 ngx_log.file = &ngx_log_file;
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10
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272 ngx_log.log_level = NGX_LOG_NOTICE;
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0
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273
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482
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274 name = (u_char *) NGX_ERROR_LOG_PATH;
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275
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276 /*
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277 * we use ngx_strlen() here since BCC warns about
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278 * condition is always false and unreachable code
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279 */
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280
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281 nlen = ngx_strlen(name);
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282
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283 if (nlen == 0) {
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284 ngx_log_file.fd = ngx_stderr;
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285 return &ngx_log;
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286 }
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287
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288 p = NULL;
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289
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10
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290 #if (NGX_WIN32)
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482
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291 if (name[1] != ':') {
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292 #else
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293 if (name[0] != '/') {
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294 #endif
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0
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295
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482
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296 if (prefix) {
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297 plen = ngx_strlen(prefix);
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298
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484
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299 } else {
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482
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300 #ifdef NGX_PREFIX
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301 prefix = (u_char *) NGX_PREFIX;
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302 plen = ngx_strlen(prefix);
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484
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303 #else
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304 plen = 0;
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482
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305 #endif
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306 }
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188
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307
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482
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308 if (plen) {
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309 name = malloc(plen + nlen + 2);
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310 if (name == NULL) {
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311 return NULL;
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312 }
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313
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314 p = ngx_cpymem(name, prefix, plen);
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0
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315
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482
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316 if (!ngx_path_separator(*(p - 1))) {
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317 *p++ = '/';
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318 }
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319
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320 ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
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321
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322 p = name;
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323 }
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10
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324 }
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0
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325
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482
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326 ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
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327 NGX_FILE_CREATE_OR_OPEN,
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328 NGX_FILE_DEFAULT_ACCESS);
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0
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329
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482
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330 if (ngx_log_file.fd == NGX_INVALID_FILE) {
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331 ngx_log_stderr(ngx_errno,
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616
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332 "[alert] could not open error log file: "
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482
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333 ngx_open_file_n " \"%s\" failed", name);
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334 #if (NGX_WIN32)
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335 ngx_event_log(ngx_errno,
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336 "could not open error log file: "
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337 ngx_open_file_n " \"%s\" failed", name);
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338 #endif
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0
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339
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482
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340 ngx_log_file.fd = ngx_stderr;
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341 }
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342
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343 if (p) {
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344 ngx_free(p);
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345 }
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0
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346
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347 return &ngx_log;
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348 }
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349
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350
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52
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351 ngx_log_t *
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484
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352 ngx_log_create(ngx_cycle_t *cycle, ngx_str_t *name)
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0
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353 {
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354 ngx_log_t *log;
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355
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50
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356 log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
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357 if (log == NULL) {
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0
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358 return NULL;
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359 }
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360
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50
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361 log->file = ngx_conf_open_file(cycle, name);
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362 if (log->file == NULL) {
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0
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363 return NULL;
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364 }
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365
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366 return log;
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367 }
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368
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369
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52
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370 char *
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484
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371 ngx_log_set_levels(ngx_conf_t *cf, ngx_log_t *log)
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0
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372 {
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634
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373 ngx_uint_t i, n, d, found;
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0
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374 ngx_str_t *value;
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375
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376 value = cf->args->elts;
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377
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378 for (i = 2; i < cf->args->nelts; i++) {
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634
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379 found = 0;
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0
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380
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381 for (n = 1; n <= NGX_LOG_DEBUG; n++) {
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482
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382 if (ngx_strcmp(value[i].data, err_levels[n].data) == 0) {
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0
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383
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384 if (log->log_level != 0) {
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385 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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386 "duplicate log level \"%V\"",
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387 &value[i]);
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0
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388 return NGX_CONF_ERROR;
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389 }
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390
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391 log->log_level = n;
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634
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392 found = 1;
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393 break;
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0
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394 }
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395 }
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396
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397 for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
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398 if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
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399 if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
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400 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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482
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401 "invalid log level \"%V\"",
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402 &value[i]);
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0
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403 return NGX_CONF_ERROR;
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404 }
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405
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406 log->log_level |= d;
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634
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407 found = 1;
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408 break;
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0
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409 }
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410 }
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411
|
|
|
412
|
|
634
|
413 if (!found) {
|
|
0
|
414 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
482
|
415 "invalid log level \"%V\"", &value[i]);
|
|
0
|
416 return NGX_CONF_ERROR;
|
|
|
417 }
|
|
|
418 }
|
|
|
419
|
|
484
|
420 if (log->log_level == NGX_LOG_DEBUG) {
|
|
0
|
421 log->log_level = NGX_LOG_DEBUG_ALL;
|
|
|
422 }
|
|
|
423
|
|
|
424 return NGX_CONF_OK;
|
|
|
425 }
|
|
|
426
|
|
|
427
|
|
52
|
428 static char *
|
|
484
|
429 ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
430 {
|
|
484
|
431 ngx_str_t *value, name;
|
|
|
432
|
|
|
433 if (cf->cycle->new_log.file) {
|
|
|
434 return "is duplicate";
|
|
|
435 }
|
|
0
|
436
|
|
|
437 value = cf->args->elts;
|
|
|
438
|
|
484
|
439 if (ngx_strcmp(value[1].data, "stderr") == 0) {
|
|
570
|
440 ngx_str_null(&name);
|
|
0
|
441
|
|
|
442 } else {
|
|
484
|
443 name = value[1];
|
|
|
444 }
|
|
0
|
445
|
|
484
|
446 cf->cycle->new_log.file = ngx_conf_open_file(cf->cycle, &name);
|
|
|
447 if (cf->cycle->new_log.file == NULL) {
|
|
|
448 return NULL;
|
|
0
|
449 }
|
|
|
450
|
|
484
|
451 if (cf->args->nelts == 2) {
|
|
|
452 cf->cycle->new_log.log_level = NGX_LOG_ERR;
|
|
|
453 return NGX_CONF_OK;
|
|
|
454 }
|
|
|
455
|
|
|
456 cf->cycle->new_log.log_level = 0;
|
|
|
457
|
|
|
458 return ngx_log_set_levels(cf, &cf->cycle->new_log);
|
|
0
|
459 }
|
