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3241
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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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3577
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33 static ngx_int_t ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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34 ngx_http_variable_value_t *v, uintptr_t data);
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35 static GeoIPRecord *ngx_http_geoip_get_city_record(ngx_http_request_t *r);
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3241
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36
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37 static ngx_int_t ngx_http_geoip_add_variables(ngx_conf_t *cf);
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38 static void *ngx_http_geoip_create_conf(ngx_conf_t *cf);
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39 static char *ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd,
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40 void *conf);
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41 static char *ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd,
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42 void *conf);
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43 static void ngx_http_geoip_cleanup(void *data);
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44
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45
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46 static ngx_command_t ngx_http_geoip_commands[] = {
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47
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48 { ngx_string("geoip_country"),
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49 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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50 ngx_http_geoip_country,
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51 NGX_HTTP_MAIN_CONF_OFFSET,
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52 0,
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53 NULL },
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54
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55 { ngx_string("geoip_city"),
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56 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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57 ngx_http_geoip_city,
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58 NGX_HTTP_MAIN_CONF_OFFSET,
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59 0,
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60 NULL },
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61
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62 ngx_null_command
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63 };
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64
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65
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66 static ngx_http_module_t ngx_http_geoip_module_ctx = {
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67 ngx_http_geoip_add_variables, /* preconfiguration */
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68 NULL, /* postconfiguration */
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69
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70 ngx_http_geoip_create_conf, /* create main configuration */
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71 NULL, /* init main configuration */
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72
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73 NULL, /* create server configuration */
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74 NULL, /* merge server configuration */
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75
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76 NULL, /* create location configuration */
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77 NULL /* merge location configuration */
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78 };
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79
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80
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81 ngx_module_t ngx_http_geoip_module = {
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82 NGX_MODULE_V1,
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83 &ngx_http_geoip_module_ctx, /* module context */
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84 ngx_http_geoip_commands, /* module directives */
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85 NGX_HTTP_MODULE, /* module type */
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86 NULL, /* init master */
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87 NULL, /* init module */
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88 NULL, /* init process */
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89 NULL, /* init thread */
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90 NULL, /* exit thread */
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91 NULL, /* exit process */
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92 NULL, /* exit master */
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93 NGX_MODULE_V1_PADDING
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94 };
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95
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96
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97 static ngx_http_variable_t ngx_http_geoip_vars[] = {
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98
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3577
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99 { ngx_string("geoip_country_code"), NULL,
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100 ngx_http_geoip_country_variable,
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3241
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101 (uintptr_t) GeoIP_country_code_by_ipnum, 0, 0 },
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102
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3577
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103 { ngx_string("geoip_country_code3"), NULL,
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104 ngx_http_geoip_country_variable,
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3241
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105 (uintptr_t) GeoIP_country_code3_by_ipnum, 0, 0 },
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106
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3577
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107 { ngx_string("geoip_country_name"), NULL,
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108 ngx_http_geoip_country_variable,
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3241
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109 (uintptr_t) GeoIP_country_name_by_ipnum, 0, 0 },
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110
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3577
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111 { ngx_string("geoip_city_continent_code"), NULL,
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112 ngx_http_geoip_city_variable,
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113 offsetof(GeoIPRecord, continent_code), 0, 0 },
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114
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115 { ngx_string("geoip_city_country_code"), NULL,
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116 ngx_http_geoip_city_variable,
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3241
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117 offsetof(GeoIPRecord, country_code), 0, 0 },
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118
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119 { ngx_string("geoip_city_country_code3"), NULL,
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120 ngx_http_geoip_city_variable,
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121 offsetof(GeoIPRecord, country_code3), 0, 0 },
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122
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3577
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123 { ngx_string("geoip_city_country_name"), NULL,
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124 ngx_http_geoip_city_variable,
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3241
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125 offsetof(GeoIPRecord, country_name), 0, 0 },
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126
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127 { ngx_string("geoip_region"), NULL,
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128 ngx_http_geoip_city_variable,
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129 offsetof(GeoIPRecord, region), 0, 0 },
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130
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131 { ngx_string("geoip_city"), NULL,
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132 ngx_http_geoip_city_variable,
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133 offsetof(GeoIPRecord, city), 0, 0 },
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134
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135 { ngx_string("geoip_postal_code"), NULL,
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136 ngx_http_geoip_city_variable,
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137 offsetof(GeoIPRecord, postal_code), 0, 0 },
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138
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3577
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139 { ngx_string("geoip_latitude"), NULL,
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140 ngx_http_geoip_city_float_variable,
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141 offsetof(GeoIPRecord, latitude), 0, 0 },
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142
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143 { ngx_string("geoip_longitude"), NULL,
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144 ngx_http_geoip_city_float_variable,
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145 offsetof(GeoIPRecord, longitude), 0, 0 },
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146
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3241
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147 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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148 };
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149
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150
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151 static ngx_int_t
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152 ngx_http_geoip_country_variable(ngx_http_request_t *r,
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153 ngx_http_variable_value_t *v, uintptr_t data)
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154 {
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155 ngx_http_geoip_variable_handler_pt handler =
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156 (ngx_http_geoip_variable_handler_pt) data;
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157
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158 u_long addr;
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159 const char *val;
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160 struct sockaddr_in *sin;
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161 ngx_http_geoip_conf_t *gcf;
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162
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163 gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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164
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165 if (gcf->country == NULL) {
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166 goto not_found;
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167 }
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168
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169 if (r->connection->sockaddr->sa_family != AF_INET) {
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170 goto not_found;
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171 }
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172
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173 sin = (struct sockaddr_in *) r->connection->sockaddr;
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174 addr = ntohl(sin->sin_addr.s_addr);
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175
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176 val = handler(gcf->country, addr);
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177
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178 if (val == NULL) {
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179 goto not_found;
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180 }
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181
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182 v->len = ngx_strlen(val);
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183 v->valid = 1;
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184 v->no_cacheable = 0;
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185 v->not_found = 0;
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186 v->data = (u_char *) val;
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187
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188 return NGX_OK;
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189
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190 not_found:
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191
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192 v->not_found = 1;
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193
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194 return NGX_OK;
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195 }
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196
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197
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198 static ngx_int_t
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199 ngx_http_geoip_city_variable(ngx_http_request_t *r,
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200 ngx_http_variable_value_t *v, uintptr_t data)
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201 {
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3577
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202 char *val;
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203 size_t len;
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204 GeoIPRecord *gr;
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3241
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205
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3577
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206 gr = ngx_http_geoip_get_city_record(r);
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3241
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207 if (gr == NULL) {
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208 goto not_found;
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209 }
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210
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211 val = *(char **) ((char *) gr + data);
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212 if (val == NULL) {
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213 goto no_value;
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214 }
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215
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216 len = ngx_strlen(val);
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217 v->data = ngx_pnalloc(r->pool, len);
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218
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219 if (v->data == NULL) {
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220 GeoIPRecord_delete(gr);
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221 return NGX_ERROR;
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222 }
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223
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224 ngx_memcpy(v->data, val, len);
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225
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226 v->len = len;
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227 v->valid = 1;
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228 v->no_cacheable = 0;
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229 v->not_found = 0;
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230
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231 GeoIPRecord_delete(gr);
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232
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233 return NGX_OK;
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234
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235 no_value:
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236
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237 GeoIPRecord_delete(gr);
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238
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239 not_found:
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240
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241 v->not_found = 1;
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242
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243 return NGX_OK;
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244 }
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245
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246
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247 static ngx_int_t
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3577
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248 ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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249 ngx_http_variable_value_t *v, uintptr_t data)
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250 {
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251 float val;
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252 GeoIPRecord *gr;
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253
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254 gr = ngx_http_geoip_get_city_record(r);
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255 if (gr == NULL) {
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256 v->not_found = 1;
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257 return NGX_OK;
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258 }
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259
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260 v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN + 5);
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261 if (v->data == NULL) {
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262 GeoIPRecord_delete(gr);
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263 return NGX_ERROR;
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264 }
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265
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266 val = *(float *) ((char *) gr + data);
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267
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268 v->len = ngx_sprintf(v->data, "%.4f", val) - v->data;
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269
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270 GeoIPRecord_delete(gr);
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271
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272 return NGX_OK;
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273 }
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274
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275
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276 static GeoIPRecord *
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277 ngx_http_geoip_get_city_record(ngx_http_request_t *r)
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278 {
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279 u_long addr;
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280 struct sockaddr_in *sin;
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281 ngx_http_geoip_conf_t *gcf;
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282
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283 gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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284
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285 if (gcf->city && r->connection->sockaddr->sa_family == AF_INET) {
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286
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287 sin = (struct sockaddr_in *) r->connection->sockaddr;
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288 addr = ntohl(sin->sin_addr.s_addr);
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289
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290 return GeoIP_record_by_ipnum(gcf->city, addr);
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291 }
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292
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293 return NULL;
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294 }
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295
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296
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297 static ngx_int_t
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3241
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298 ngx_http_geoip_add_variables(ngx_conf_t *cf)
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299 {
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300 ngx_http_variable_t *var, *v;
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301
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302 for (v = ngx_http_geoip_vars; v->name.len; v++) {
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303 var = ngx_http_add_variable(cf, &v->name, v->flags);
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304 if (var == NULL) {
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305 return NGX_ERROR;
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306 }
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307
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308 var->get_handler = v->get_handler;
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309 var->data = v->data;
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310 }
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311
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312 return NGX_OK;
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313 }
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314
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315
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316 static void *
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317 ngx_http_geoip_create_conf(ngx_conf_t *cf)
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318 {
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319 ngx_pool_cleanup_t *cln;
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320 ngx_http_geoip_conf_t *conf;
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321
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322 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_geoip_conf_t));
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323 if (conf == NULL) {
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324 return NULL;
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325 }
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326
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327 cln = ngx_pool_cleanup_add(cf->pool, 0);
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328 if (cln == NULL) {
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329 return NULL;
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330 }
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331
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332 cln->handler = ngx_http_geoip_cleanup;
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333 cln->data = conf;
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334
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335 return conf;
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336 }
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337
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338
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339 static char *
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340 ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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341 {
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342 ngx_http_geoip_conf_t *gcf = conf;
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343
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344 ngx_str_t *value;
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345
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346 if (gcf->country) {
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347 return "is duplicate";
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348 }
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349
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350 value = cf->args->elts;
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351
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352 gcf->country = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
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353
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354 if (gcf->country == NULL) {
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355 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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356 "GeoIO_open(\"%V\") failed", &value[1]);
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357
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358 return NGX_CONF_ERROR;
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359 }
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360
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361 switch (gcf->country->databaseType) {
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362
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363 case GEOIP_COUNTRY_EDITION:
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364 case GEOIP_PROXY_EDITION:
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365 case GEOIP_NETSPEED_EDITION:
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366
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367 return NGX_CONF_OK;
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368
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369 default:
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370 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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371 "invalid GeoIP database \"%V\" type:%d",
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372 &value[1], gcf->country->databaseType);
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373 return NGX_CONF_ERROR;
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374 }
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375 }
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376
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377
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378 static char *
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379 ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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380 {
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381 ngx_http_geoip_conf_t *gcf = conf;
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382
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383 ngx_str_t *value;
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384
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385 if (gcf->city) {
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386 return "is duplicate";
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387 }
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388
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389 value = cf->args->elts;
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390
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391 gcf->city = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
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392
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393 if (gcf->city == NULL) {
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394 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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395 "GeoIO_open(\"%V\") failed", &value[1]);
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396
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397 return NGX_CONF_ERROR;
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398 }
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399
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400 switch (gcf->city->databaseType) {
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401
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402 case GEOIP_CITY_EDITION_REV0:
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403 case GEOIP_CITY_EDITION_REV1:
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404
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405 return NGX_CONF_OK;
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406
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407 default:
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408 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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409 "invalid GeoIP City database \"%V\" type:%d",
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410 &value[1], gcf->city->databaseType);
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411 return NGX_CONF_ERROR;
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412 }
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413 }
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414
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415
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416 static void
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417 ngx_http_geoip_cleanup(void *data)
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418 {
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419 ngx_http_geoip_conf_t *gcf = data;
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420
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421 if (gcf->country) {
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422 GeoIP_delete(gcf->country);
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423 }
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424
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425 if (gcf->city) {
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426 GeoIP_delete(gcf->city);
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427 }
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428 }
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