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34
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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
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12 typedef struct {
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430
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13 u_short start;
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14 u_short end;
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15 ngx_http_variable_value_t *value;
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422
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16 } ngx_http_geo_range_t;
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17
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18
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19 typedef struct {
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430
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20 ngx_http_geo_range_t *ranges;
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21 ngx_uint_t n;
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422
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22 } ngx_http_geo_low_ranges_t;
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23
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24
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25 typedef struct {
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430
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26 ngx_http_geo_low_ranges_t low[0x10000];
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27 ngx_http_variable_value_t *default_value;
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422
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28 } ngx_http_geo_high_ranges_t;
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29
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30
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31 typedef struct {
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430
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32 ngx_http_variable_value_t *value;
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33 ngx_str_t *net;
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34 ngx_http_geo_high_ranges_t *high;
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35 ngx_radix_tree_t *tree;
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36 ngx_rbtree_t rbtree;
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37 ngx_rbtree_node_t sentinel;
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510
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38 ngx_array_t *proxies;
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430
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39 ngx_pool_t *pool;
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40 ngx_pool_t *temp_pool;
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138
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41 } ngx_http_geo_conf_ctx_t;
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34
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42
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43
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430
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44 typedef struct {
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45 union {
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46 ngx_radix_tree_t *tree;
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47 ngx_http_geo_high_ranges_t *high;
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48 } u;
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49
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510
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50 ngx_array_t *proxies;
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51
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430
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52 ngx_int_t index;
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53 } ngx_http_geo_ctx_t;
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54
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55
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56 static in_addr_t ngx_http_geo_addr(ngx_http_request_t *r,
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57 ngx_http_geo_ctx_t *ctx);
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510
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58 static in_addr_t ngx_http_geo_real_addr(ngx_http_request_t *r,
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59 ngx_http_geo_ctx_t *ctx);
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34
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60 static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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61 static char *ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf);
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422
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62 static char *ngx_http_geo_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
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63 ngx_str_t *value);
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64 static char *ngx_http_geo_add_range(ngx_conf_t *cf,
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65 ngx_http_geo_conf_ctx_t *ctx, in_addr_t start, in_addr_t end);
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66 static ngx_uint_t ngx_http_geo_delete_range(ngx_conf_t *cf,
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67 ngx_http_geo_conf_ctx_t *ctx, in_addr_t start, in_addr_t end);
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68 static char *ngx_http_geo_cidr(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
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69 ngx_str_t *value);
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70 static ngx_http_variable_value_t *ngx_http_geo_value(ngx_conf_t *cf,
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71 ngx_http_geo_conf_ctx_t *ctx, ngx_str_t *value);
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510
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72 static char *ngx_http_geo_add_proxy(ngx_conf_t *cf,
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73 ngx_http_geo_conf_ctx_t *ctx, ngx_cidr_t *cidr);
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74 static ngx_int_t ngx_http_geo_cidr_value(ngx_conf_t *cf, ngx_str_t *net,
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75 ngx_cidr_t *cidr);
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34
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76
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77
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78 static ngx_command_t ngx_http_geo_commands[] = {
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79
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80 { ngx_string("geo"),
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430
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81 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE12,
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34
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82 ngx_http_geo_block,
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83 NGX_HTTP_MAIN_CONF_OFFSET,
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84 0,
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85 NULL },
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86
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87 ngx_null_command
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88 };
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89
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90
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91 static ngx_http_module_t ngx_http_geo_module_ctx = {
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58
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92 NULL, /* preconfiguration */
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93 NULL, /* postconfiguration */
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34
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94
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95 NULL, /* create main configuration */
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96 NULL, /* init main configuration */
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97
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98 NULL, /* create server configuration */
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99 NULL, /* merge server configuration */
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100
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101 NULL, /* create location configuration */
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102 NULL /* merge location configuration */
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103 };
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104
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105
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106 ngx_module_t ngx_http_geo_module = {
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58
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107 NGX_MODULE_V1,
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34
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108 &ngx_http_geo_module_ctx, /* module context */
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109 ngx_http_geo_commands, /* module directives */
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110 NGX_HTTP_MODULE, /* module type */
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90
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111 NULL, /* init master */
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34
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112 NULL, /* init module */
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90
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113 NULL, /* init process */
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114 NULL, /* init thread */
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115 NULL, /* exit thread */
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116 NULL, /* exit process */
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117 NULL, /* exit master */
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118 NGX_MODULE_V1_PADDING
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34
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119 };
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120
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121
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122 /* AF_INET only */
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123
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122
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124 static ngx_int_t
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422
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125 ngx_http_geo_cidr_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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122
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126 uintptr_t data)
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34
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127 {
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430
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128 ngx_http_geo_ctx_t *ctx = (ngx_http_geo_ctx_t *) data;
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34
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129
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122
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130 ngx_http_variable_value_t *vv;
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34
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131
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122
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132 vv = (ngx_http_variable_value_t *)
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430
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133 ngx_radix32tree_find(ctx->u.tree, ngx_http_geo_addr(r, ctx));
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38
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134
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122
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135 *v = *vv;
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136
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430
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137 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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138 "http geo: %v", v);
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38
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139
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122
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140 return NGX_OK;
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34
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141 }
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142
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143
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422
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144 static ngx_int_t
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145 ngx_http_geo_range_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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146 uintptr_t data)
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147 {
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430
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148 ngx_http_geo_ctx_t *ctx = (ngx_http_geo_ctx_t *) data;
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422
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149
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150 in_addr_t addr;
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151 ngx_uint_t i, n;
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152 ngx_http_geo_range_t *range;
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153
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430
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154 *v = *ctx->u.high->default_value;
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422
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155
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430
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156 addr = ngx_http_geo_addr(r, ctx);
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422
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157
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430
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158 range = ctx->u.high->low[addr >> 16].ranges;
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422
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159
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160 n = addr & 0xffff;
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161
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430
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162 for (i = 0; i < ctx->u.high->low[addr >> 16].n; i++) {
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422
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163 if (n >= (ngx_uint_t) range[i].start
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164 && n <= (ngx_uint_t) range[i].end)
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165 {
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166 *v = *range[i].value;
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167 }
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168 }
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169
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430
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170 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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171 "http geo: %v", v);
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422
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172
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173 return NGX_OK;
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174 }
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175
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176
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430
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177 static in_addr_t
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178 ngx_http_geo_addr(ngx_http_request_t *r, ngx_http_geo_ctx_t *ctx)
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179 {
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510
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180 u_char *p, *ip;
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181 size_t len;
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182 in_addr_t addr;
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183 ngx_uint_t i, n;
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184 ngx_in_cidr_t *proxies;
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185 ngx_table_elt_t *xfwd;
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186
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187 addr = ngx_http_geo_real_addr(r, ctx);
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188
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189 xfwd = r->headers_in.x_forwarded_for;
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190
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191 if (xfwd == NULL || ctx->proxies == NULL) {
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192 return addr;
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193 }
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194
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195 proxies = ctx->proxies->elts;
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196 n = ctx->proxies->nelts;
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197
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198 for (i = 0; i < n; i++) {
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199 if ((addr & proxies[i].mask) == proxies[i].addr) {
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200
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201 len = xfwd->value.len;
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202 ip = xfwd->value.data;
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203
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204 for (p = ip + len - 1; p > ip; p--) {
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205 if (*p == ' ' || *p == ',') {
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206 p++;
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207 len -= p - ip;
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208 ip = p;
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209 break;
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210 }
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211 }
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212
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213 return ntohl(ngx_inet_addr(ip, len));
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214 }
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215 }
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216
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217 return addr;
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218 }
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219
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220
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221 static in_addr_t
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222 ngx_http_geo_real_addr(ngx_http_request_t *r, ngx_http_geo_ctx_t *ctx)
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223 {
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430
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224 struct sockaddr_in *sin;
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225 ngx_http_variable_value_t *v;
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226
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227 if (ctx->index == -1) {
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228 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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229 "http geo started: %V", &r->connection->addr_text);
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230
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448
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231 if (r->connection->sockaddr->sa_family != AF_INET) {
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232 return 0;
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233 }
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234
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430
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235 sin = (struct sockaddr_in *) r->connection->sockaddr;
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236 return ntohl(sin->sin_addr.s_addr);
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237 }
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238
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239 v = ngx_http_get_flushed_variable(r, ctx->index);
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240
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241 if (v == NULL || v->not_found) {
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242 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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243 "http geo not found");
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244
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245 return 0;
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246 }
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247
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248 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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249 "http geo started: %v", v);
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250
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251 return ntohl(ngx_inet_addr(v->data, v->len));
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252 }
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253
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254
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38
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255 static char *
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256 ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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34
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257 {
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138
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258 char *rv;
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422
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259 size_t len;
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138
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260 ngx_str_t *value, name;
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422
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261 ngx_uint_t i;
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138
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262 ngx_conf_t save;
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263 ngx_pool_t *pool;
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422
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264 ngx_array_t *a;
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328
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265 ngx_http_variable_t *var;
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430
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266 ngx_http_geo_ctx_t *geo;
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138
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267 ngx_http_geo_conf_ctx_t ctx;
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268
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50
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269 value = cf->args->elts;
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270
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430
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271 geo = ngx_palloc(cf->pool, sizeof(ngx_http_geo_ctx_t));
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272 if (geo == NULL) {
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273 return NGX_CONF_ERROR;
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274 }
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275
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50
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276 name = value[1];
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430
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277 name.len--;
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278 name.data++;
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50
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279
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430
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280 if (cf->args->nelts == 3) {
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281
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282 geo->index = ngx_http_get_variable_index(cf, &name);
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283 if (geo->index == NGX_ERROR) {
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284 return NGX_CONF_ERROR;
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285 }
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286
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287 name = value[2];
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50
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288 name.len--;
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289 name.data++;
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430
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290
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291 } else {
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292 geo->index = -1;
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50
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293 }
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294
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340
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295 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGEABLE);
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50
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296 if (var == NULL) {
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34
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297 return NGX_CONF_ERROR;
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298 }
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299
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132
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300 pool = ngx_create_pool(16384, cf->log);
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50
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301 if (pool == NULL) {
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34
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302 return NGX_CONF_ERROR;
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303 }
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304
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422
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305 ctx.temp_pool = ngx_create_pool(16384, cf->log);
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306 if (ctx.temp_pool == NULL) {
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34
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307 return NGX_CONF_ERROR;
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308 }
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309
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422
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310 ngx_rbtree_init(&ctx.rbtree, &ctx.sentinel,
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311 ngx_http_variable_value_rbtree_insert);
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312
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313 ctx.high = NULL;
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314 ctx.tree = NULL;
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510
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315 ctx.proxies = NULL;
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138
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316 ctx.pool = cf->pool;
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34
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317
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318 save = *cf;
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319 cf->pool = pool;
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138
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320 cf->ctx = &ctx;
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34
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321 cf->handler = ngx_http_geo;
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322 cf->handler_conf = conf;
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323
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324 rv = ngx_conf_parse(cf, NULL);
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325
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326 *cf = save;
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327
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510
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328 geo->proxies = ctx.proxies;
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329
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422
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330 if (ctx.high) {
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331
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332 for (i = 0; i < 0x10000; i++) {
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333 a = (ngx_array_t *) ctx.high->low[i].ranges;
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334
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335 if (a == NULL || a->nelts == 0) {
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336 continue;
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337 }
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338
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339 ctx.high->low[i].n = a->nelts;
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34
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340
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422
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341 len = a->nelts * sizeof(ngx_http_geo_range_t);
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342
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343 ctx.high->low[i].ranges = ngx_palloc(cf->pool, len);
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344 if (ctx.high->low[i].ranges == NULL ){
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345 return NGX_CONF_ERROR;
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346 }
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347
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348 ngx_memcpy(ctx.high->low[i].ranges, a->elts, len);
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349 }
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350
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430
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351 geo->u.high = ctx.high;
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352
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422
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353 var->get_handler = ngx_http_geo_range_variable;
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430
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354 var->data = (uintptr_t) geo;
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34
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355
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422
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356 ngx_destroy_pool(ctx.temp_pool);
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357 ngx_destroy_pool(pool);
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358
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359 if (ctx.high->default_value == NULL) {
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360 ctx.high->default_value = &ngx_http_variable_null_value;
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361 }
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362
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363 } else {
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424
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364 if (ctx.tree == NULL) {
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365 ctx.tree = ngx_radix_tree_create(cf->pool, -1);
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366 if (ctx.tree == NULL) {
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367 return NGX_CONF_ERROR;
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368 }
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369 }
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370
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430
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371 geo->u.tree = ctx.tree;
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372
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422
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373 var->get_handler = ngx_http_geo_cidr_variable;
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430
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374 var->data = (uintptr_t) geo;
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422
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375
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376 ngx_destroy_pool(ctx.temp_pool);
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377 ngx_destroy_pool(pool);
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378
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379 if (ngx_radix32tree_find(ctx.tree, 0) != NGX_RADIX_NO_VALUE) {
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380 return rv;
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381 }
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382
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383 if (ngx_radix32tree_insert(ctx.tree, 0, 0,
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384 (uintptr_t) &ngx_http_variable_null_value)
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385 == NGX_ERROR)
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386 {
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387 return NGX_CONF_ERROR;
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388 }
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34
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389 }
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|
390
|
|
|
391 return rv;
|
|
|
392 }
|
|
|
393
|
|
|
394
|
|
38
|
395 static char *
|
|
|
396 ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
34
|
397 {
|
|
422
|
398 char *rv;
|
|
|
399 ngx_str_t *value, file;
|
|
510
|
400 ngx_cidr_t cidr;
|
|
422
|
401 ngx_http_geo_conf_ctx_t *ctx;
|
|
34
|
402
|
|
138
|
403 ctx = cf->ctx;
|
|
34
|
404
|
|
422
|
405 value = cf->args->elts;
|
|
|
406
|
|
|
407 if (cf->args->nelts == 1) {
|
|
|
408
|
|
|
409 if (ngx_strcmp(value[0].data, "ranges") == 0) {
|
|
|
410
|
|
|
411 if (ctx->tree) {
|
|
|
412 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
413 "the \"ranges\" directive must be "
|
|
|
414 "the first directive inside \"geo\" block");
|
|
|
415 goto failed;
|
|
|
416 }
|
|
|
417
|
|
|
418 ctx->high = ngx_pcalloc(ctx->pool,
|
|
|
419 sizeof(ngx_http_geo_high_ranges_t));
|
|
|
420 if (ctx->high == NULL) {
|
|
|
421 goto failed;
|
|
|
422 }
|
|
|
423
|
|
|
424 rv = NGX_CONF_OK;
|
|
|
425
|
|
|
426 goto done;
|
|
|
427 }
|
|
|
428 }
|
|
|
429
|
|
34
|
430 if (cf->args->nelts != 2) {
|
|
|
431 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
432 "invalid number of the geo parameters");
|
|
422
|
433 goto failed;
|
|
34
|
434 }
|
|
|
435
|
|
422
|
436 if (ngx_strcmp(value[0].data, "include") == 0) {
|
|
|
437
|
|
|
438 file.len = value[1].len++;
|
|
34
|
439
|
|
422
|
440 file.data = ngx_pstrdup(ctx->temp_pool, &value[1]);
|
|
|
441 if (file.data == NULL) {
|
|
|
442 goto failed;
|
|
|
443 }
|
|
34
|
444
|
|
422
|
445 if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK){
|
|
|
446 goto failed;
|
|
34
|
447 }
|
|
|
448
|
|
|
449 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
|
|
|
450
|
|
422
|
451 rv = ngx_conf_parse(cf, &file);
|
|
|
452
|
|
|
453 goto done;
|
|
510
|
454
|
|
|
455 } else if (ngx_strcmp(value[0].data, "proxy") == 0) {
|
|
|
456
|
|
|
457 if (ngx_http_geo_cidr_value(cf, &value[1], &cidr) != NGX_OK) {
|
|
|
458 goto failed;
|
|
|
459 }
|
|
|
460
|
|
|
461 rv = ngx_http_geo_add_proxy(cf, ctx, &cidr);
|
|
|
462
|
|
|
463 goto done;
|
|
422
|
464 }
|
|
|
465
|
|
|
466 if (ctx->high) {
|
|
|
467 rv = ngx_http_geo_range(cf, ctx, value);
|
|
|
468
|
|
|
469 } else {
|
|
|
470 rv = ngx_http_geo_cidr(cf, ctx, value);
|
|
|
471 }
|
|
|
472
|
|
|
473 done:
|
|
|
474
|
|
|
475 ngx_reset_pool(cf->pool);
|
|
|
476
|
|
|
477 return rv;
|
|
|
478
|
|
|
479 failed:
|
|
|
480
|
|
|
481 ngx_reset_pool(cf->pool);
|
|
|
482
|
|
|
483 return NGX_CONF_ERROR;
|
|
|
484 }
|
|
|
485
|
|
|
486
|
|
|
487 static char *
|
|
|
488 ngx_http_geo_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
489 ngx_str_t *value)
|
|
|
490 {
|
|
|
491 u_char *p, *last;
|
|
|
492 in_addr_t start, end;
|
|
|
493 ngx_str_t *net;
|
|
|
494 ngx_uint_t del;
|
|
|
495 ngx_http_variable_value_t *old;
|
|
|
496
|
|
|
497 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
|
498
|
|
|
499 old = ctx->high->default_value;
|
|
|
500
|
|
|
501 ctx->high->default_value = ngx_http_geo_value(cf, ctx, &value[1]);
|
|
|
502 if (ctx->high->default_value == NULL) {
|
|
|
503 return NGX_CONF_ERROR;
|
|
|
504 }
|
|
|
505
|
|
|
506 if (old) {
|
|
|
507 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
508 "duplicate range \"%V\", value: \"%v\", old value: \"%v\"",
|
|
|
509 &value[0], ctx->high->default_value, old);
|
|
|
510 }
|
|
|
511
|
|
|
512 return NGX_CONF_OK;
|
|
|
513 }
|
|
|
514
|
|
|
515 if (ngx_strcmp(value[0].data, "delete") == 0) {
|
|
|
516 net = &value[1];
|
|
|
517 del = 1;
|
|
|
518
|
|
|
519 } else {
|
|
|
520 net = &value[0];
|
|
|
521 del = 0;
|
|
|
522 }
|
|
|
523
|
|
|
524 last = net->data + net->len;
|
|
|
525
|
|
|
526 p = ngx_strlchr(net->data, last, '-');
|
|
|
527
|
|
|
528 if (p == NULL) {
|
|
|
529 goto invalid;
|
|
|
530 }
|
|
|
531
|
|
|
532 start = ngx_inet_addr(net->data, p - net->data);
|
|
|
533
|
|
|
534 if (start == INADDR_NONE) {
|
|
|
535 goto invalid;
|
|
|
536 }
|
|
|
537
|
|
|
538 start = ntohl(start);
|
|
|
539
|
|
|
540 p++;
|
|
|
541
|
|
|
542 end = ngx_inet_addr(p, last - p);
|
|
|
543
|
|
|
544 if (end == INADDR_NONE) {
|
|
|
545 goto invalid;
|
|
|
546 }
|
|
|
547
|
|
|
548 end = ntohl(end);
|
|
|
549
|
|
|
550 if (start > end) {
|
|
|
551 goto invalid;
|
|
|
552 }
|
|
|
553
|
|
|
554 if (del) {
|
|
|
555 if (ngx_http_geo_delete_range(cf, ctx, start, end)) {
|
|
|
556 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
557 "no address range \"%V\" to delete", net);
|
|
|
558 }
|
|
|
559
|
|
|
560 return NGX_CONF_OK;
|
|
|
561 }
|
|
|
562
|
|
|
563 ctx->value = ngx_http_geo_value(cf, ctx, &value[1]);
|
|
|
564
|
|
|
565 if (ctx->value == NULL) {
|
|
|
566 return NGX_CONF_ERROR;
|
|
|
567 }
|
|
|
568
|
|
|
569 ctx->net = net;
|
|
|
570
|
|
|
571 return ngx_http_geo_add_range(cf, ctx, start, end);
|
|
|
572
|
|
|
573 invalid:
|
|
|
574
|
|
|
575 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid range \"%V\"", net);
|
|
|
576
|
|
|
577 return NGX_CONF_ERROR;
|
|
|
578 }
|
|
|
579
|
|
|
580
|
|
|
581 /* the add procedure is optimized to add a growing up sequence */
|
|
|
582
|
|
|
583 static char *
|
|
|
584 ngx_http_geo_add_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
585 in_addr_t start, in_addr_t end)
|
|
|
586 {
|
|
|
587 in_addr_t n;
|
|
|
588 ngx_uint_t h, i, s, e;
|
|
|
589 ngx_array_t *a;
|
|
|
590 ngx_http_geo_range_t *range;
|
|
|
591
|
|
438
|
592 for (n = start; n <= end; n += 0x10000) {
|
|
422
|
593
|
|
|
594 h = n >> 16;
|
|
438
|
595
|
|
|
596 if (n == start) {
|
|
|
597 s = n & 0xffff;
|
|
|
598 } else {
|
|
|
599 s = 0;
|
|
|
600 }
|
|
422
|
601
|
|
|
602 if ((n | 0xffff) > end) {
|
|
|
603 e = end & 0xffff;
|
|
|
604
|
|
|
605 } else {
|
|
|
606 e = 0xffff;
|
|
|
607 }
|
|
|
608
|
|
|
609 a = (ngx_array_t *) ctx->high->low[h].ranges;
|
|
|
610
|
|
|
611 if (a == NULL) {
|
|
|
612 a = ngx_array_create(ctx->temp_pool, 64,
|
|
|
613 sizeof(ngx_http_geo_range_t));
|
|
|
614 if (a == NULL) {
|
|
|
615 return NGX_CONF_ERROR;
|
|
|
616 }
|
|
|
617
|
|
|
618 ctx->high->low[h].ranges = (ngx_http_geo_range_t *) a;
|
|
|
619 }
|
|
|
620
|
|
|
621 i = a->nelts;
|
|
|
622 range = a->elts;
|
|
|
623
|
|
|
624 while (i) {
|
|
|
625
|
|
|
626 i--;
|
|
|
627
|
|
|
628 if (e < (ngx_uint_t) range[i].start) {
|
|
|
629 continue;
|
|
|
630 }
|
|
|
631
|
|
|
632 if (s > (ngx_uint_t) range[i].end) {
|
|
|
633
|
|
|
634 /* add after the range */
|
|
|
635
|
|
|
636 range = ngx_array_push(a);
|
|
|
637 if (range == NULL) {
|
|
|
638 return NGX_CONF_ERROR;
|
|
|
639 }
|
|
|
640
|
|
|
641 range = a->elts;
|
|
|
642
|
|
|
643 ngx_memcpy(&range[i + 2], &range[i + 1],
|
|
|
644 (a->nelts - 2 - i) * sizeof(ngx_http_geo_range_t));
|
|
|
645
|
|
438
|
646 range[i + 1].start = (u_short) s;
|
|
|
647 range[i + 1].end = (u_short) e;
|
|
|
648 range[i + 1].value = ctx->value;
|
|
422
|
649
|
|
|
650 goto next;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (s == (ngx_uint_t) range[i].start
|
|
|
654 && e == (ngx_uint_t) range[i].end)
|
|
|
655 {
|
|
|
656 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
657 "duplicate range \"%V\", value: \"%v\", old value: \"%v\"",
|
|
|
658 ctx->net, ctx->value, range[i].value);
|
|
438
|
659
|
|
|
660 range[i].value = ctx->value;
|
|
|
661
|
|
|
662 goto next;
|
|
|
663 }
|
|
|
664
|
|
|
665 if (s > (ngx_uint_t) range[i].start
|
|
|
666 && e < (ngx_uint_t) range[i].end)
|
|
|
667 {
|
|
|
668 /* split the range and insert the new one */
|
|
|
669
|
|
|
670 range = ngx_array_push(a);
|
|
|
671 if (range == NULL) {
|
|
|
672 return NGX_CONF_ERROR;
|
|
|
673 }
|
|
|
674
|
|
|
675 range = ngx_array_push(a);
|
|
|
676 if (range == NULL) {
|
|
|
677 return NGX_CONF_ERROR;
|
|
|
678 }
|
|
|
679
|
|
|
680 range = a->elts;
|
|
|
681
|
|
|
682 ngx_memcpy(&range[i + 3], &range[i + 1],
|
|
|
683 (a->nelts - 3 - i) * sizeof(ngx_http_geo_range_t));
|
|
|
684
|
|
|
685 range[i + 2].start = (u_short) (e + 1);
|
|
|
686 range[i + 2].end = range[i].end;
|
|
|
687 range[i + 2].value = range[i].value;
|
|
|
688
|
|
|
689 range[i + 1].start = (u_short) s;
|
|
|
690 range[i + 1].end = (u_short) e;
|
|
|
691 range[i + 1].value = ctx->value;
|
|
|
692
|
|
|
693 range[i].end = (u_short) (s - 1);
|
|
|
694
|
|
|
695 goto next;
|
|
422
|
696 }
|
|
|
697
|
|
438
|
698 if (s == (ngx_uint_t) range[i].start
|
|
|
699 && e < (ngx_uint_t) range[i].end)
|
|
|
700 {
|
|
|
701 /* shift the range start and insert the new range */
|
|
|
702
|
|
|
703 range = ngx_array_push(a);
|
|
|
704 if (range == NULL) {
|
|
|
705 return NGX_CONF_ERROR;
|
|
|
706 }
|
|
|
707
|
|
|
708 range = a->elts;
|
|
|
709
|
|
440
|
710 ngx_memcpy(&range[i + 1], &range[i],
|
|
|
711 (a->nelts - 1 - i) * sizeof(ngx_http_geo_range_t));
|
|
438
|
712
|
|
|
713 range[i + 1].start = (u_short) (e + 1);
|
|
|
714
|
|
|
715 range[i].start = (u_short) s;
|
|
|
716 range[i].end = (u_short) e;
|
|
|
717 range[i].value = ctx->value;
|
|
|
718
|
|
|
719 goto next;
|
|
|
720 }
|
|
|
721
|
|
|
722 if (s > (ngx_uint_t) range[i].start
|
|
|
723 && e == (ngx_uint_t) range[i].end)
|
|
|
724 {
|
|
|
725 /* shift the range end and insert the new range */
|
|
|
726
|
|
|
727 range = ngx_array_push(a);
|
|
|
728 if (range == NULL) {
|
|
|
729 return NGX_CONF_ERROR;
|
|
|
730 }
|
|
|
731
|
|
|
732 range = a->elts;
|
|
|
733
|
|
|
734 ngx_memcpy(&range[i + 2], &range[i + 1],
|
|
|
735 (a->nelts - 2 - i) * sizeof(ngx_http_geo_range_t));
|
|
|
736
|
|
|
737 range[i + 1].start = (u_short) s;
|
|
|
738 range[i + 1].end = (u_short) e;
|
|
|
739 range[i + 1].value = ctx->value;
|
|
|
740
|
|
|
741 range[i].end = (u_short) (s - 1);
|
|
|
742
|
|
|
743 goto next;
|
|
|
744 }
|
|
|
745
|
|
|
746 s = (ngx_uint_t) range[i].start;
|
|
|
747 e = (ngx_uint_t) range[i].end;
|
|
|
748
|
|
422
|
749 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
438
|
750 "range \"%V\" overlaps \"%d.%d.%d.%d-%d.%d.%d.%d\"",
|
|
|
751 ctx->net,
|
|
|
752 h >> 8, h & 0xff, s >> 8, s & 0xff,
|
|
|
753 h >> 8, h & 0xff, e >> 8, e & 0xff);
|
|
422
|
754
|
|
|
755 return NGX_CONF_ERROR;
|
|
|
756 }
|
|
|
757
|
|
|
758 /* add the first range */
|
|
|
759
|
|
|
760 range = ngx_array_push(a);
|
|
|
761 if (range == NULL) {
|
|
|
762 return NGX_CONF_ERROR;
|
|
|
763 }
|
|
|
764
|
|
|
765 range->start = (u_short) s;
|
|
|
766 range->end = (u_short) e;
|
|
|
767 range->value = ctx->value;
|
|
438
|
768
|
|
|
769 next:
|
|
|
770
|
|
|
771 continue;
|
|
422
|
772 }
|
|
|
773
|
|
|
774 return NGX_CONF_OK;
|
|
|
775 }
|
|
|
776
|
|
|
777
|
|
|
778 static ngx_uint_t
|
|
|
779 ngx_http_geo_delete_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
780 in_addr_t start, in_addr_t end)
|
|
|
781 {
|
|
|
782 in_addr_t n;
|
|
|
783 ngx_uint_t h, i, s, e, warn;
|
|
|
784 ngx_array_t *a;
|
|
|
785 ngx_http_geo_range_t *range;
|
|
|
786
|
|
|
787 warn = 0;
|
|
|
788
|
|
438
|
789 for (n = start; n <= end; n += 0x10000) {
|
|
422
|
790
|
|
|
791 h = n >> 16;
|
|
438
|
792
|
|
|
793 if (n == start) {
|
|
|
794 s = n & 0xffff;
|
|
|
795 } else {
|
|
|
796 s = 0;
|
|
|
797 }
|
|
422
|
798
|
|
|
799 if ((n | 0xffff) > end) {
|
|
|
800 e = end & 0xffff;
|
|
|
801
|
|
|
802 } else {
|
|
|
803 e = 0xffff;
|
|
|
804 }
|
|
|
805
|
|
|
806 a = (ngx_array_t *) ctx->high->low[h].ranges;
|
|
|
807
|
|
|
808 if (a == NULL) {
|
|
|
809 warn = 1;
|
|
|
810 continue;
|
|
|
811 }
|
|
|
812
|
|
|
813 range = a->elts;
|
|
|
814 for (i = 0; i < a->nelts; i++) {
|
|
|
815
|
|
|
816 if (s == (ngx_uint_t) range[i].start
|
|
|
817 && e == (ngx_uint_t) range[i].end)
|
|
|
818 {
|
|
|
819 ngx_memcpy(&range[i], &range[i + 1],
|
|
|
820 (a->nelts - 1 - i) * sizeof(ngx_http_geo_range_t));
|
|
438
|
821
|
|
|
822 a->nelts--;
|
|
|
823
|
|
422
|
824 break;
|
|
|
825 }
|
|
|
826
|
|
|
827 if (s != (ngx_uint_t) range[i].start
|
|
|
828 && e != (ngx_uint_t) range[i].end)
|
|
|
829 {
|
|
|
830 continue;
|
|
|
831 }
|
|
|
832
|
|
|
833 warn = 1;
|
|
|
834 }
|
|
|
835 }
|
|
|
836
|
|
|
837 return warn;
|
|
|
838 }
|
|
|
839
|
|
|
840
|
|
|
841 static char *
|
|
|
842 ngx_http_geo_cidr(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
843 ngx_str_t *value)
|
|
|
844 {
|
|
|
845 ngx_int_t rc, del;
|
|
|
846 ngx_str_t *net;
|
|
|
847 ngx_uint_t i;
|
|
454
|
848 ngx_cidr_t cidr;
|
|
422
|
849 ngx_http_variable_value_t *val, *old;
|
|
|
850
|
|
|
851 if (ctx->tree == NULL) {
|
|
|
852 ctx->tree = ngx_radix_tree_create(ctx->pool, -1);
|
|
|
853 if (ctx->tree == NULL) {
|
|
|
854 return NGX_CONF_ERROR;
|
|
|
855 }
|
|
34
|
856 }
|
|
|
857
|
|
|
858 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
454
|
859 cidr.u.in.addr = 0;
|
|
|
860 cidr.u.in.mask = 0;
|
|
422
|
861 net = &value[0];
|
|
34
|
862
|
|
|
863 } else {
|
|
422
|
864 if (ngx_strcmp(value[0].data, "delete") == 0) {
|
|
|
865 net = &value[1];
|
|
|
866 del = 1;
|
|
|
867
|
|
|
868 } else {
|
|
|
869 net = &value[0];
|
|
|
870 del = 0;
|
|
|
871 }
|
|
|
872
|
|
510
|
873 if (ngx_http_geo_cidr_value(cf, net, &cidr) != NGX_OK) {
|
|
|
874 return NGX_CONF_ERROR;
|
|
326
|
875 }
|
|
|
876
|
|
422
|
877 if (del) {
|
|
454
|
878 if (ngx_radix32tree_delete(ctx->tree, cidr.u.in.addr,
|
|
|
879 cidr.u.in.mask)
|
|
422
|
880 != NGX_OK)
|
|
|
881 {
|
|
|
882 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
883 "no network \"%V\" to delete", net);
|
|
|
884 }
|
|
426
|
885
|
|
|
886 return NGX_CONF_OK;
|
|
34
|
887 }
|
|
|
888 }
|
|
|
889
|
|
422
|
890 val = ngx_http_geo_value(cf, ctx, &value[1]);
|
|
34
|
891
|
|
422
|
892 if (val == NULL) {
|
|
|
893 return NGX_CONF_ERROR;
|
|
34
|
894 }
|
|
|
895
|
|
102
|
896 for (i = 2; i; i--) {
|
|
454
|
897 rc = ngx_radix32tree_insert(ctx->tree, cidr.u.in.addr, cidr.u.in.mask,
|
|
422
|
898 (uintptr_t) val);
|
|
102
|
899 if (rc == NGX_OK) {
|
|
|
900 return NGX_CONF_OK;
|
|
|
901 }
|
|
|
902
|
|
|
903 if (rc == NGX_ERROR) {
|
|
|
904 return NGX_CONF_ERROR;
|
|
|
905 }
|
|
|
906
|
|
|
907 /* rc == NGX_BUSY */
|
|
|
908
|
|
526
|
909 old = (ngx_http_variable_value_t *)
|
|
454
|
910 ngx_radix32tree_find(ctx->tree, cidr.u.in.addr & cidr.u.in.mask);
|
|
102
|
911
|
|
|
912 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
422
|
913 "duplicate network \"%V\", value: \"%v\", old value: \"%v\"",
|
|
|
914 net, val, old);
|
|
102
|
915
|
|
454
|
916 rc = ngx_radix32tree_delete(ctx->tree, cidr.u.in.addr, cidr.u.in.mask);
|
|
102
|
917
|
|
|
918 if (rc == NGX_ERROR) {
|
|
422
|
919 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid radix tree");
|
|
102
|
920 return NGX_CONF_ERROR;
|
|
|
921 }
|
|
34
|
922 }
|
|
|
923
|
|
102
|
924 return NGX_CONF_ERROR;
|
|
34
|
925 }
|
|
422
|
926
|
|
|
927
|
|
|
928 static ngx_http_variable_value_t *
|
|
|
929 ngx_http_geo_value(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
930 ngx_str_t *value)
|
|
|
931 {
|
|
|
932 uint32_t hash;
|
|
|
933 ngx_http_variable_value_t *val;
|
|
|
934 ngx_http_variable_value_node_t *vvn;
|
|
|
935
|
|
|
936 hash = ngx_crc32_long(value->data, value->len);
|
|
|
937
|
|
|
938 val = ngx_http_variable_value_lookup(&ctx->rbtree, value, hash);
|
|
|
939
|
|
|
940 if (val) {
|
|
|
941 return val;
|
|
|
942 }
|
|
|
943
|
|
|
944 val = ngx_palloc(ctx->pool, sizeof(ngx_http_variable_value_t));
|
|
|
945 if (val == NULL) {
|
|
|
946 return NULL;
|
|
|
947 }
|
|
|
948
|
|
|
949 val->len = value->len;
|
|
|
950 val->data = ngx_pstrdup(ctx->pool, value);
|
|
|
951 if (val->data == NULL) {
|
|
|
952 return NULL;
|
|
|
953 }
|
|
|
954
|
|
|
955 val->valid = 1;
|
|
|
956 val->no_cacheable = 0;
|
|
|
957 val->not_found = 0;
|
|
|
958
|
|
|
959 vvn = ngx_palloc(ctx->temp_pool, sizeof(ngx_http_variable_value_node_t));
|
|
|
960 if (vvn == NULL) {
|
|
|
961 return NULL;
|
|
|
962 }
|
|
|
963
|
|
|
964 vvn->node.key = hash;
|
|
|
965 vvn->len = val->len;
|
|
|
966 vvn->value = val;
|
|
|
967
|
|
|
968 ngx_rbtree_insert(&ctx->rbtree, &vvn->node);
|
|
|
969
|
|
|
970 return val;
|
|
|
971 }
|
|
510
|
972
|
|
|
973
|
|
|
974 static char *
|
|
|
975 ngx_http_geo_add_proxy(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx,
|
|
|
976 ngx_cidr_t *cidr)
|
|
|
977 {
|
|
|
978 ngx_in_cidr_t *c;
|
|
|
979
|
|
|
980 if (ctx->proxies == NULL) {
|
|
|
981 ctx->proxies = ngx_array_create(ctx->pool, 4, sizeof(ngx_in_cidr_t));
|
|
|
982 if (ctx->proxies == NULL) {
|
|
|
983 return NGX_CONF_ERROR;
|
|
|
984 }
|
|
|
985 }
|
|
|
986
|
|
|
987 c = ngx_array_push(ctx->proxies);
|
|
|
988 if (c == NULL) {
|
|
|
989 return NGX_CONF_ERROR;
|
|
|
990 }
|
|
|
991
|
|
|
992 c->addr = cidr->u.in.addr;
|
|
|
993 c->mask = cidr->u.in.mask;
|
|
|
994
|
|
|
995 return NGX_CONF_OK;
|
|
|
996 }
|
|
|
997
|
|
|
998
|
|
|
999 static ngx_int_t
|
|
|
1000 ngx_http_geo_cidr_value(ngx_conf_t *cf, ngx_str_t *net, ngx_cidr_t *cidr)
|
|
|
1001 {
|
|
|
1002 ngx_int_t rc;
|
|
|
1003
|
|
|
1004 if (ngx_strcmp(net->data, "255.255.255.255") == 0) {
|
|
|
1005 cidr->u.in.addr = 0xffffffff;
|
|
|
1006 cidr->u.in.mask = 0xffffffff;
|
|
|
1007
|
|
|
1008 return NGX_OK;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 rc = ngx_ptocidr(net, cidr);
|
|
|
1012
|
|
|
1013 if (rc == NGX_ERROR) {
|
|
|
1014 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid network \"%V\"", net);
|
|
|
1015 return NGX_ERROR;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 if (cidr->family != AF_INET) {
|
|
|
1019 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"geo\" supports IPv4 only");
|
|
|
1020 return NGX_ERROR;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 if (rc == NGX_DONE) {
|
|
|
1024 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1025 "low address bits of %V are meaningless", net);
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 cidr->u.in.addr = ntohl(cidr->u.in.addr);
|
|
|
1029 cidr->u.in.mask = ntohl(cidr->u.in.mask);
|
|
|
1030
|
|
|
1031 return NGX_OK;
|
|
|
1032 }
|
