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508
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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 #include <ngx_http.h>
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10
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11 #include <GeoIP.h>
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12 #include <GeoIPCity.h>
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13
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14
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15 typedef struct {
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16 GeoIP *country;
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17 GeoIP *city;
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18 } ngx_http_geoip_conf_t;
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19
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20
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21 typedef struct {
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22 ngx_str_t *name;
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23 uintptr_t data;
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24 } ngx_http_geoip_var_t;
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25
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26
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27 typedef const char *(*ngx_http_geoip_variable_handler_pt)(GeoIP *, u_long addr);
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28
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29 static ngx_int_t ngx_http_geoip_country_variable(ngx_http_request_t *r,
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30 ngx_http_variable_value_t *v, uintptr_t data);
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31 static ngx_int_t ngx_http_geoip_city_variable(ngx_http_request_t *r,
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32 ngx_http_variable_value_t *v, uintptr_t data);
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592
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33 static ngx_int_t ngx_http_geoip_region_name_variable(ngx_http_request_t *r,
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34 ngx_http_variable_value_t *v, uintptr_t data);
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558
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35 static ngx_int_t ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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36 ngx_http_variable_value_t *v, uintptr_t data);
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592
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37 static ngx_int_t ngx_http_geoip_city_int_variable(ngx_http_request_t *r,
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38 ngx_http_variable_value_t *v, uintptr_t data);
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558
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39 static GeoIPRecord *ngx_http_geoip_get_city_record(ngx_http_request_t *r);
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508
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40
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41 static ngx_int_t ngx_http_geoip_add_variables(ngx_conf_t *cf);
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42 static void *ngx_http_geoip_create_conf(ngx_conf_t *cf);
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43 static char *ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd,
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44 void *conf);
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45 static char *ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd,
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46 void *conf);
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47 static void ngx_http_geoip_cleanup(void *data);
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48
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49
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50 static ngx_command_t ngx_http_geoip_commands[] = {
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51
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52 { ngx_string("geoip_country"),
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53 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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54 ngx_http_geoip_country,
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55 NGX_HTTP_MAIN_CONF_OFFSET,
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56 0,
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57 NULL },
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58
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59 { ngx_string("geoip_city"),
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60 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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61 ngx_http_geoip_city,
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62 NGX_HTTP_MAIN_CONF_OFFSET,
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63 0,
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64 NULL },
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65
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66 ngx_null_command
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67 };
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68
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69
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70 static ngx_http_module_t ngx_http_geoip_module_ctx = {
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71 ngx_http_geoip_add_variables, /* preconfiguration */
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72 NULL, /* postconfiguration */
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73
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74 ngx_http_geoip_create_conf, /* create main configuration */
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75 NULL, /* init main configuration */
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76
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77 NULL, /* create server configuration */
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78 NULL, /* merge server configuration */
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79
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80 NULL, /* create location configuration */
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81 NULL /* merge location configuration */
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82 };
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83
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84
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85 ngx_module_t ngx_http_geoip_module = {
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86 NGX_MODULE_V1,
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87 &ngx_http_geoip_module_ctx, /* module context */
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88 ngx_http_geoip_commands, /* module directives */
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89 NGX_HTTP_MODULE, /* module type */
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90 NULL, /* init master */
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91 NULL, /* init module */
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92 NULL, /* init process */
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93 NULL, /* init thread */
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94 NULL, /* exit thread */
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95 NULL, /* exit process */
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96 NULL, /* exit master */
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97 NGX_MODULE_V1_PADDING
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98 };
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99
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100
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101 static ngx_http_variable_t ngx_http_geoip_vars[] = {
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102
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558
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103 { ngx_string("geoip_country_code"), NULL,
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104 ngx_http_geoip_country_variable,
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508
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105 (uintptr_t) GeoIP_country_code_by_ipnum, 0, 0 },
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106
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558
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107 { ngx_string("geoip_country_code3"), NULL,
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108 ngx_http_geoip_country_variable,
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508
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109 (uintptr_t) GeoIP_country_code3_by_ipnum, 0, 0 },
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110
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558
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111 { ngx_string("geoip_country_name"), NULL,
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112 ngx_http_geoip_country_variable,
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508
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113 (uintptr_t) GeoIP_country_name_by_ipnum, 0, 0 },
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114
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558
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115 { ngx_string("geoip_city_continent_code"), NULL,
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116 ngx_http_geoip_city_variable,
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117 offsetof(GeoIPRecord, continent_code), 0, 0 },
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118
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119 { ngx_string("geoip_city_country_code"), NULL,
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120 ngx_http_geoip_city_variable,
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508
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121 offsetof(GeoIPRecord, country_code), 0, 0 },
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122
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123 { ngx_string("geoip_city_country_code3"), NULL,
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124 ngx_http_geoip_city_variable,
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125 offsetof(GeoIPRecord, country_code3), 0, 0 },
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126
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558
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127 { ngx_string("geoip_city_country_name"), NULL,
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128 ngx_http_geoip_city_variable,
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508
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129 offsetof(GeoIPRecord, country_name), 0, 0 },
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130
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131 { ngx_string("geoip_region"), NULL,
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132 ngx_http_geoip_city_variable,
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133 offsetof(GeoIPRecord, region), 0, 0 },
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134
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592
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135 { ngx_string("geoip_region_name"), NULL,
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136 ngx_http_geoip_region_name_variable,
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137 0, 0, 0 },
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138
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508
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139 { ngx_string("geoip_city"), NULL,
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140 ngx_http_geoip_city_variable,
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141 offsetof(GeoIPRecord, city), 0, 0 },
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142
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143 { ngx_string("geoip_postal_code"), NULL,
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144 ngx_http_geoip_city_variable,
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145 offsetof(GeoIPRecord, postal_code), 0, 0 },
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146
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558
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147 { ngx_string("geoip_latitude"), NULL,
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148 ngx_http_geoip_city_float_variable,
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149 offsetof(GeoIPRecord, latitude), 0, 0 },
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150
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151 { ngx_string("geoip_longitude"), NULL,
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152 ngx_http_geoip_city_float_variable,
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153 offsetof(GeoIPRecord, longitude), 0, 0 },
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154
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592
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155 { ngx_string("geoip_dma_code"), NULL,
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156 ngx_http_geoip_city_int_variable,
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157 offsetof(GeoIPRecord, dma_code), 0, 0 },
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158
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159 { ngx_string("geoip_area_code"), NULL,
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160 ngx_http_geoip_city_int_variable,
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161 offsetof(GeoIPRecord, area_code), 0, 0 },
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162
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508
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163 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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164 };
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165
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166
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167 static ngx_int_t
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168 ngx_http_geoip_country_variable(ngx_http_request_t *r,
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169 ngx_http_variable_value_t *v, uintptr_t data)
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170 {
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171 ngx_http_geoip_variable_handler_pt handler =
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172 (ngx_http_geoip_variable_handler_pt) data;
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173
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174 u_long addr;
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175 const char *val;
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176 struct sockaddr_in *sin;
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177 ngx_http_geoip_conf_t *gcf;
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178
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179 gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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180
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181 if (gcf->country == NULL) {
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182 goto not_found;
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183 }
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184
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185 if (r->connection->sockaddr->sa_family != AF_INET) {
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186 goto not_found;
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187 }
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188
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189 sin = (struct sockaddr_in *) r->connection->sockaddr;
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190 addr = ntohl(sin->sin_addr.s_addr);
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191
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192 val = handler(gcf->country, addr);
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193
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194 if (val == NULL) {
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195 goto not_found;
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196 }
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197
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198 v->len = ngx_strlen(val);
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199 v->valid = 1;
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200 v->no_cacheable = 0;
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201 v->not_found = 0;
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202 v->data = (u_char *) val;
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203
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204 return NGX_OK;
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205
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206 not_found:
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207
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208 v->not_found = 1;
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209
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210 return NGX_OK;
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211 }
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212
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213
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214 static ngx_int_t
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215 ngx_http_geoip_city_variable(ngx_http_request_t *r,
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216 ngx_http_variable_value_t *v, uintptr_t data)
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217 {
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558
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218 char *val;
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219 size_t len;
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220 GeoIPRecord *gr;
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508
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221
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558
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222 gr = ngx_http_geoip_get_city_record(r);
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508
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223 if (gr == NULL) {
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224 goto not_found;
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225 }
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226
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227 val = *(char **) ((char *) gr + data);
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228 if (val == NULL) {
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516
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229 goto no_value;
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508
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230 }
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231
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516
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232 len = ngx_strlen(val);
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233 v->data = ngx_pnalloc(r->pool, len);
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234 if (v->data == NULL) {
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235 GeoIPRecord_delete(gr);
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236 return NGX_ERROR;
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237 }
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238
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239 ngx_memcpy(v->data, val, len);
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240
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241 v->len = len;
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508
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242 v->valid = 1;
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243 v->no_cacheable = 0;
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244 v->not_found = 0;
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516
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245
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246 GeoIPRecord_delete(gr);
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508
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247
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248 return NGX_OK;
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249
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516
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250 no_value:
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251
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252 GeoIPRecord_delete(gr);
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253
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508
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254 not_found:
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255
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256 v->not_found = 1;
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257
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258 return NGX_OK;
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259 }
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260
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261
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262 static ngx_int_t
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592
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263 ngx_http_geoip_region_name_variable(ngx_http_request_t *r,
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264 ngx_http_variable_value_t *v, uintptr_t data)
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265 {
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266 size_t len;
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267 const char *val;
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268 GeoIPRecord *gr;
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269
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270 gr = ngx_http_geoip_get_city_record(r);
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271 if (gr == NULL) {
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272 goto not_found;
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273 }
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274
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275 val = GeoIP_region_name_by_code(gr->country_code, gr->region);
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276
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594
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277 GeoIPRecord_delete(gr);
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278
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279 if (val == NULL) {
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280 goto not_found;
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281 }
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282
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592
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283 len = ngx_strlen(val);
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284 v->data = ngx_pnalloc(r->pool, len);
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285 if (v->data == NULL) {
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286 return NGX_ERROR;
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287 }
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288
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289 ngx_memcpy(v->data, val, len);
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290
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291 v->len = len;
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292 v->valid = 1;
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293 v->no_cacheable = 0;
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294 v->not_found = 0;
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295
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296 return NGX_OK;
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297
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298 not_found:
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299
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300 v->not_found = 1;
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301
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302 return NGX_OK;
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303 }
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304
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305
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306 static ngx_int_t
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558
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307 ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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308 ngx_http_variable_value_t *v, uintptr_t data)
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309 {
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310 float val;
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311 GeoIPRecord *gr;
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312
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313 gr = ngx_http_geoip_get_city_record(r);
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314 if (gr == NULL) {
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315 v->not_found = 1;
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316 return NGX_OK;
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317 }
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318
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319 v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN + 5);
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320 if (v->data == NULL) {
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321 GeoIPRecord_delete(gr);
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322 return NGX_ERROR;
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323 }
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324
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325 val = *(float *) ((char *) gr + data);
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326
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327 v->len = ngx_sprintf(v->data, "%.4f", val) - v->data;
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328
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329 GeoIPRecord_delete(gr);
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330
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331 return NGX_OK;
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332 }
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333
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334
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592
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335 static ngx_int_t
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336 ngx_http_geoip_city_int_variable(ngx_http_request_t *r,
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337 ngx_http_variable_value_t *v, uintptr_t data)
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338 {
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339 int val;
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340 GeoIPRecord *gr;
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341
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342 gr = ngx_http_geoip_get_city_record(r);
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343 if (gr == NULL) {
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344 v->not_found = 1;
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345 return NGX_OK;
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346 }
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347
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348 v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN);
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349 if (v->data == NULL) {
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350 GeoIPRecord_delete(gr);
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351 return NGX_ERROR;
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352 }
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353
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354 val = *(int *) ((char *) gr + data);
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355
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356 v->len = ngx_sprintf(v->data, "%d", val) - v->data;
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357
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358 GeoIPRecord_delete(gr);
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359
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360 return NGX_OK;
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361 }
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362
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363
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558
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364 static GeoIPRecord *
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365 ngx_http_geoip_get_city_record(ngx_http_request_t *r)
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366 {
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367 u_long addr;
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368 struct sockaddr_in *sin;
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369 ngx_http_geoip_conf_t *gcf;
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370
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371 gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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372
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373 if (gcf->city && r->connection->sockaddr->sa_family == AF_INET) {
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374
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375 sin = (struct sockaddr_in *) r->connection->sockaddr;
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376 addr = ntohl(sin->sin_addr.s_addr);
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377
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378 return GeoIP_record_by_ipnum(gcf->city, addr);
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379 }
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380
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381 return NULL;
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382 }
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383
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384
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385 static ngx_int_t
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508
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386 ngx_http_geoip_add_variables(ngx_conf_t *cf)
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387 {
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388 ngx_http_variable_t *var, *v;
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389
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390 for (v = ngx_http_geoip_vars; v->name.len; v++) {
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391 var = ngx_http_add_variable(cf, &v->name, v->flags);
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392 if (var == NULL) {
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393 return NGX_ERROR;
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394 }
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395
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396 var->get_handler = v->get_handler;
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397 var->data = v->data;
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398 }
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399
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400 return NGX_OK;
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401 }
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402
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403
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404 static void *
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405 ngx_http_geoip_create_conf(ngx_conf_t *cf)
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406 {
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407 ngx_pool_cleanup_t *cln;
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408 ngx_http_geoip_conf_t *conf;
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409
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410 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_geoip_conf_t));
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411 if (conf == NULL) {
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412 return NULL;
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413 }
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414
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415 cln = ngx_pool_cleanup_add(cf->pool, 0);
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416 if (cln == NULL) {
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417 return NULL;
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418 }
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419
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420 cln->handler = ngx_http_geoip_cleanup;
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421 cln->data = conf;
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422
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423 return conf;
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424 }
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425
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426
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427 static char *
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428 ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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429 {
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430 ngx_http_geoip_conf_t *gcf = conf;
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431
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432 ngx_str_t *value;
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433
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434 if (gcf->country) {
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435 return "is duplicate";
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436 }
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437
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438 value = cf->args->elts;
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439
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440 gcf->country = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
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441
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442 if (gcf->country == NULL) {
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443 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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444 "GeoIO_open(\"%V\") failed", &value[1]);
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445
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|
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446 return NGX_CONF_ERROR;
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|
|
447 }
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|
|
448
|
|
|
449 switch (gcf->country->databaseType) {
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|
|
450
|
|
|
451 case GEOIP_COUNTRY_EDITION:
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|
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452 case GEOIP_PROXY_EDITION:
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|
|
453 case GEOIP_NETSPEED_EDITION:
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|
|
454
|
|
|
455 return NGX_CONF_OK;
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|
|
456
|
|
|
457 default:
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|
|
458 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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|
|
459 "invalid GeoIP database \"%V\" type:%d",
|
|
|
460 &value[1], gcf->country->databaseType);
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|
|
461 return NGX_CONF_ERROR;
|
|
|
462 }
|
|
|
463 }
|
|
|
464
|
|
|
465
|
|
|
466 static char *
|
|
|
467 ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
468 {
|
|
|
469 ngx_http_geoip_conf_t *gcf = conf;
|
|
|
470
|
|
|
471 ngx_str_t *value;
|
|
|
472
|
|
|
473 if (gcf->city) {
|
|
|
474 return "is duplicate";
|
|
|
475 }
|
|
|
476
|
|
|
477 value = cf->args->elts;
|
|
|
478
|
|
|
479 gcf->city = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
|
|
|
480
|
|
|
481 if (gcf->city == NULL) {
|
|
|
482 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
483 "GeoIO_open(\"%V\") failed", &value[1]);
|
|
|
484
|
|
|
485 return NGX_CONF_ERROR;
|
|
|
486 }
|
|
|
487
|
|
|
488 switch (gcf->city->databaseType) {
|
|
|
489
|
|
|
490 case GEOIP_CITY_EDITION_REV0:
|
|
|
491 case GEOIP_CITY_EDITION_REV1:
|
|
|
492
|
|
|
493 return NGX_CONF_OK;
|
|
|
494
|
|
|
495 default:
|
|
|
496 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
497 "invalid GeoIP City database \"%V\" type:%d",
|
|
|
498 &value[1], gcf->city->databaseType);
|
|
|
499 return NGX_CONF_ERROR;
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
|
503
|
|
|
504 static void
|
|
|
505 ngx_http_geoip_cleanup(void *data)
|
|
|
506 {
|
|
|
507 ngx_http_geoip_conf_t *gcf = data;
|
|
|
508
|
|
|
509 if (gcf->country) {
|
|
|
510 GeoIP_delete(gcf->country);
|
|
|
511 }
|
|
|
512
|
|
|
513 if (gcf->city) {
|
|
|
514 GeoIP_delete(gcf->city);
|
|
|
515 }
|
|
|
516 }
|
