50
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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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126
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13 ngx_array_t *codes; /* uintptr_t */
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50
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14
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126
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15 ngx_uint_t stack_size;
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50
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16
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126
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17 ngx_flag_t log;
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184
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18 ngx_flag_t uninitialized_variable_warn;
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50
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19 } ngx_http_rewrite_loc_conf_t;
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20
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21
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22 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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23 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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24 void *parent, void *child);
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230
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25 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf);
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50
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26 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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27 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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28 void *conf);
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76
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29 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd,
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30 void *conf);
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50
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31 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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32 void *conf);
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33 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf,
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34 ngx_http_rewrite_loc_conf_t *lcf);
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35 static char *ngx_http_rewrite_variable(ngx_conf_t *cf,
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36 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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58
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37 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd,
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38 void *conf);
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126
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39 static char * ngx_http_rewrite_value(ngx_conf_t *cf,
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40 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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41
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42
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43 static ngx_command_t ngx_http_rewrite_commands[] = {
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44
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45 { ngx_string("rewrite"),
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46 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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47 |NGX_CONF_TAKE23,
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48 ngx_http_rewrite,
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49 NGX_HTTP_LOC_CONF_OFFSET,
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50 0,
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51 NULL },
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52
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53 { ngx_string("return"),
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54 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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55 |NGX_CONF_TAKE1,
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56 ngx_http_rewrite_return,
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57 NGX_HTTP_LOC_CONF_OFFSET,
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58 0,
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59 NULL },
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60
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76
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61 { ngx_string("break"),
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62 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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63 |NGX_CONF_NOARGS,
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64 ngx_http_rewrite_break,
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65 NGX_HTTP_LOC_CONF_OFFSET,
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66 0,
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67 NULL },
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68
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50
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69 { ngx_string("if"),
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70 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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71 ngx_http_rewrite_if,
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72 NGX_HTTP_LOC_CONF_OFFSET,
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73 0,
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74 NULL },
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75
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76 { ngx_string("set"),
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77 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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78 |NGX_CONF_TAKE2,
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79 ngx_http_rewrite_set,
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80 NGX_HTTP_LOC_CONF_OFFSET,
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81 0,
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82 NULL },
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83
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84 { ngx_string("rewrite_log"),
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184
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85 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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86 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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87 ngx_conf_set_flag_slot,
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88 NGX_HTTP_LOC_CONF_OFFSET,
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89 offsetof(ngx_http_rewrite_loc_conf_t, log),
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90 NULL },
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91
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184
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92 { ngx_string("uninitialized_variable_warn"),
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93 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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94 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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95 ngx_conf_set_flag_slot,
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96 NGX_HTTP_LOC_CONF_OFFSET,
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97 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn),
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98 NULL },
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99
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50
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100 ngx_null_command
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101 };
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102
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103
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216
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104 static ngx_http_module_t ngx_http_rewrite_module_ctx = {
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105 NULL, /* preconfiguration */
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230
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106 ngx_http_rewrite_init, /* postconfiguration */
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107
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108 NULL, /* create main configuration */
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109 NULL, /* init main configuration */
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110
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111 NULL, /* create server configuration */
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112 NULL, /* merge server configuration */
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113
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114 ngx_http_rewrite_create_loc_conf, /* create location configration */
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115 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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116 };
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117
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118
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119 ngx_module_t ngx_http_rewrite_module = {
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120 NGX_MODULE_V1,
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126
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121 &ngx_http_rewrite_module_ctx, /* module context */
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122 ngx_http_rewrite_commands, /* module directives */
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123 NGX_HTTP_MODULE, /* module type */
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90
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124 NULL, /* init master */
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230
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125 NULL, /* init module */
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90
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126 NULL, /* init process */
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127 NULL, /* init thread */
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128 NULL, /* exit thread */
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129 NULL, /* exit process */
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130 NULL, /* exit master */
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131 NGX_MODULE_V1_PADDING
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132 };
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133
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134
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135 static ngx_int_t
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136 ngx_http_rewrite_handler(ngx_http_request_t *r)
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137 {
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138 ngx_http_script_code_pt code;
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139 ngx_http_script_engine_t *e;
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184
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140 ngx_http_rewrite_loc_conf_t *rlcf;
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141
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184
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142 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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143
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184
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144 if (rlcf->codes == NULL) {
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145 return NGX_DECLINED;
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146 }
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147
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148 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t));
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149 if (e == NULL) {
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150 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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151 }
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152
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153 e->sp = ngx_pcalloc(r->pool,
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184
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154 rlcf->stack_size * sizeof(ngx_http_variable_value_t));
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155 if (e->sp == NULL) {
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156 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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157 }
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158
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184
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159 e->ip = rlcf->codes->elts;
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160 e->request = r;
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161 e->quote = 1;
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162 e->log = rlcf->log;
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163 e->status = NGX_DECLINED;
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164
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165 while (*(uintptr_t *) e->ip) {
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166 code = *(ngx_http_script_code_pt *) e->ip;
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167 code(e);
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168 }
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169
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242
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170 if (e->status == NGX_DECLINED) {
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171 return NGX_DECLINED;
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172 }
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173
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238
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174 if (r->err_status == 0) {
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175 return e->status;
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176 }
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177
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178 return r->err_status;
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50
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179 }
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180
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181
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122
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182 static ngx_int_t
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183 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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184 uintptr_t data)
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185 {
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184
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186 ngx_http_variable_t *var;
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187 ngx_http_core_main_conf_t *cmcf;
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188 ngx_http_rewrite_loc_conf_t *rlcf;
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189
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190 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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191
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192 if (rlcf->uninitialized_variable_warn == 0) {
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193 *v = ngx_http_variable_null_value;
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194 return NGX_OK;
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195 }
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196
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197 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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198
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199 var = cmcf->variables.elts;
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200
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201 /*
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202 * the ngx_http_rewrite_module sets variables directly in r->variables,
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203 * and they should be handled by ngx_http_get_indexed_variable(),
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204 * so the handler is called only if the variable is not initialized
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205 */
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206
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184
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207 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
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208 "using uninitialized \"%V\" variable", &var[data].name);
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209
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210 *v = ngx_http_variable_null_value;
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211
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212 return NGX_OK;
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213 }
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214
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215
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216 static void *
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217 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
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218 {
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219 ngx_http_rewrite_loc_conf_t *conf;
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220
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221 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t));
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222 if (conf == NULL) {
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223 return NULL;
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224 }
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225
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226 conf->stack_size = NGX_CONF_UNSET_UINT;
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227 conf->log = NGX_CONF_UNSET;
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228 conf->uninitialized_variable_warn = NGX_CONF_UNSET;
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229
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230 return conf;
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231 }
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232
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233
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234 static char *
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235 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
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236 {
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237 ngx_http_rewrite_loc_conf_t *prev = parent;
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238 ngx_http_rewrite_loc_conf_t *conf = child;
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239
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240 uintptr_t *code;
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241
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242 ngx_conf_merge_value(conf->log, prev->log, 0);
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243 ngx_conf_merge_value(conf->uninitialized_variable_warn,
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244 prev->uninitialized_variable_warn, 1);
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212
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245 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10);
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246
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247 if (conf->codes == NULL) {
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248 return NGX_CONF_OK;
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249 }
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250
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251 if (conf->codes == prev->codes) {
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252 return NGX_CONF_OK;
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253 }
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254
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255 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t));
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256 if (code == NULL) {
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257 return NGX_CONF_ERROR;
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258 }
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259
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260 *code = (uintptr_t) NULL;
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261
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262 return NGX_CONF_OK;
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263 }
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264
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265
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266 static ngx_int_t
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230
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267 ngx_http_rewrite_init(ngx_conf_t *cf)
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126
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268 {
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269 ngx_http_handler_pt *h;
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270 ngx_http_core_main_conf_t *cmcf;
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271
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230
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272 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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273
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122
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274 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers);
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275 if (h == NULL) {
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276 return NGX_ERROR;
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277 }
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278
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279 *h = ngx_http_rewrite_handler;
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280
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281 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
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282 if (h == NULL) {
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283 return NGX_ERROR;
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284 }
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285
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286 *h = ngx_http_rewrite_handler;
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287
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288 return NGX_OK;
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126
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289 }
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290
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291
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292 static char *
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293 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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294 {
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126
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295 ngx_http_rewrite_loc_conf_t *lcf = conf;
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296
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297 ngx_str_t *value, err;
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298 ngx_int_t n;
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299 ngx_uint_t last;
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300 ngx_http_script_code_pt *code;
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301 ngx_http_script_compile_t sc;
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302 ngx_http_script_regex_code_t *regex;
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303 ngx_http_script_regex_end_code_t *regex_end;
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304 u_char errstr[NGX_MAX_CONF_ERRSTR];
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305
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306 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
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307 sizeof(ngx_http_script_regex_code_t));
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308 if (regex == NULL) {
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309 return NGX_CONF_ERROR;
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310 }
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311
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312 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
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313
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314 value = cf->args->elts;
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315
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316 err.len = NGX_MAX_CONF_ERRSTR;
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317 err.data = errstr;
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318
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319 /* TODO: NGX_REGEX_CASELESS */
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320
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321 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
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322
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323 if (regex->regex == NULL) {
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324 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
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325 return NGX_CONF_ERROR;
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326 }
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327
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328 regex->code = ngx_http_script_regex_start_code;
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329 regex->uri = 1;
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330 regex->name = value[1];
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331
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58
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332 if (value[2].data[value[2].len - 1] == '?') {
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333
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334 /* the last "?" drops the original arguments */
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335 value[2].len--;
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336
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337 } else {
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338 regex->add_args = 1;
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339 }
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340
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341 last = 0;
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342
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508
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343 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0
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344 || ngx_strncmp(value[2].data, "https://", sizeof("https://") - 1) == 0
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345 || ngx_strncmp(value[2].data, "$scheme", sizeof("$scheme") - 1) == 0)
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346 {
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382
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347 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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348 regex->redirect = 1;
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349 last = 1;
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350 }
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351
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50
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352 if (cf->args->nelts == 4) {
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353 if (ngx_strcmp(value[3].data, "last") == 0) {
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354 last = 1;
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355
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356 } else if (ngx_strcmp(value[3].data, "break") == 0) {
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357 regex->break_cycle = 1;
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358 last = 1;
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359
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360 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
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361 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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362 regex->redirect = 1;
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363 last = 1;
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364
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365 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
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366 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
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367 regex->redirect = 1;
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368 last = 1;
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369
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370 } else {
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371 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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372 "invalid parameter \"%V\"", &value[3]);
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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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58
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377 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
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378
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58
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379 sc.cf = cf;
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380 sc.source = &value[2];
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381 sc.lengths = ®ex->lengths;
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382 sc.values = &lcf->codes;
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383 sc.variables = ngx_http_script_variables_count(&value[2]);
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384 sc.main = regex;
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385 sc.complete_lengths = 1;
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386 sc.compile_args = !regex->redirect;
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387
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58
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388 if (ngx_http_script_compile(&sc) != NGX_OK) {
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389 return NGX_CONF_ERROR;
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390 }
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50
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391
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58
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392 regex = sc.main;
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50
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393
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58
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394 regex->ncaptures = sc.ncaptures;
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395 regex->size = sc.size;
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396 regex->args = sc.args;
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50
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397
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190
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398 if (sc.variables == 0 && !sc.dup_capture) {
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58
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399 regex->lengths = NULL;
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50
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400 }
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401
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402 n = ngx_regex_capture_count(regex->regex);
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403
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404 if (n < 0) {
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405 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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406 ngx_regex_capture_count_n " failed for "
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407 "pattern \"%V\"", &value[1]);
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408 return NGX_CONF_ERROR;
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409 }
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410
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411 if (regex->ncaptures > (ngx_uint_t) n) {
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412 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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413 "pattern \"%V\" has less captures "
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414 "than referrenced in substitution \"%V\"",
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415 &value[1], &value[2]);
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416 return NGX_CONF_ERROR;
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417 }
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418
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419 if (regex->ncaptures < (ngx_uint_t) n) {
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420 regex->ncaptures = (ngx_uint_t) n;
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421 }
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422
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423 if (regex->ncaptures) {
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424 regex->ncaptures = (regex->ncaptures + 1) * 3;
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58
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425 }
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426
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427 regex_end = ngx_http_script_add_code(lcf->codes,
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428 sizeof(ngx_http_script_regex_end_code_t),
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429 ®ex);
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50
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430 if (regex_end == NULL) {
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431 return NGX_CONF_ERROR;
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432 }
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433
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58
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434 regex_end->code = ngx_http_script_regex_end_code;
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50
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435 regex_end->uri = regex->uri;
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436 regex_end->args = regex->args;
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58
|
437 regex_end->add_args = regex->add_args;
|
50
|
438 regex_end->redirect = regex->redirect;
|
|
439
|
|
440 if (last) {
|
66
|
441 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex);
|
50
|
442 if (code == NULL) {
|
|
443 return NGX_CONF_ERROR;
|
|
444 }
|
|
445
|
502
|
446 *code = NULL;
|
50
|
447 }
|
|
448
|
|
449 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
450 - (u_char *) regex;
|
|
451
|
|
452 return NGX_CONF_OK;
|
|
453 }
|
|
454
|
|
455
|
|
456 static char *
|
|
457 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
458 {
|
126
|
459 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
460
|
58
|
461 ngx_str_t *value;
|
|
462 ngx_http_script_return_code_t *ret;
|
50
|
463
|
58
|
464 ret = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
465 sizeof(ngx_http_script_return_code_t));
|
50
|
466 if (ret == NULL) {
|
|
467 return NGX_CONF_ERROR;
|
|
468 }
|
|
469
|
|
470 value = cf->args->elts;
|
|
471
|
58
|
472 ret->code = ngx_http_script_return_code;
|
50
|
473 ret->null = (uintptr_t) NULL;
|
|
474
|
|
475 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
476
|
|
477 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
478 return NGX_CONF_ERROR;
|
|
479 }
|
|
480
|
|
481 return NGX_CONF_OK;
|
|
482 }
|
|
483
|
|
484
|
|
485 static char *
|
76
|
486 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
487 {
|
|
488 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
489
|
|
490 ngx_http_script_code_pt *code;
|
|
491
|
|
492 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t));
|
|
493 if (code == NULL) {
|
|
494 return NGX_CONF_ERROR;
|
|
495 }
|
|
496
|
|
497 *code = ngx_http_script_break_code;
|
|
498
|
|
499 return NGX_CONF_OK;
|
|
500 }
|
|
501
|
|
502
|
|
503 static char *
|
50
|
504 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
505 {
|
126
|
506 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
507
|
|
508 void *mconf;
|
|
509 char *rv;
|
|
510 u_char *elts;
|
|
511 ngx_uint_t i;
|
|
512 ngx_conf_t save;
|
|
513 ngx_http_module_t *module;
|
|
514 ngx_http_conf_ctx_t *ctx, *pctx;
|
378
|
515 ngx_http_core_loc_conf_t *clcf, *pclcf;
|
58
|
516 ngx_http_script_if_code_t *if_code;
|
50
|
517 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
518
|
|
519 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
520 if (ctx == NULL) {
|
|
521 return NGX_CONF_ERROR;
|
|
522 }
|
|
523
|
|
524 pctx = cf->ctx;
|
|
525 ctx->main_conf = pctx->main_conf;
|
126
|
526 ctx->srv_conf = pctx->srv_conf;
|
50
|
527
|
|
528 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
529 if (ctx->loc_conf == NULL) {
|
|
530 return NGX_CONF_ERROR;
|
|
531 }
|
|
532
|
|
533 for (i = 0; ngx_modules[i]; i++) {
|
|
534 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
535 continue;
|
|
536 }
|
|
537
|
|
538 module = ngx_modules[i]->ctx;
|
126
|
539
|
50
|
540 if (module->create_loc_conf) {
|
|
541
|
|
542 mconf = module->create_loc_conf(cf);
|
|
543 if (mconf == NULL) {
|
|
544 return NGX_CONF_ERROR;
|
|
545 }
|
|
546
|
|
547 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
548 }
|
|
549 }
|
|
550
|
|
551 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
552
|
|
553 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
554 clcf->loc_conf = ctx->loc_conf;
|
|
555 clcf->name = pclcf->name;
|
|
556 clcf->noname = 1;
|
|
557
|
378
|
558 if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) {
|
50
|
559 return NGX_CONF_ERROR;
|
|
560 }
|
|
561
|
|
562 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) {
|
|
563 return NGX_CONF_ERROR;
|
|
564 }
|
|
565
|
58
|
566 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t));
|
50
|
567 if (if_code == NULL) {
|
502
|
568 return NGX_CONF_ERROR;
|
50
|
569 }
|
|
570
|
58
|
571 if_code->code = ngx_http_script_if_code;
|
50
|
572
|
|
573 elts = lcf->codes->elts;
|
|
574
|
|
575
|
180
|
576 /* the inner directives must be compiled to the same code array */
|
50
|
577
|
|
578 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
579 nlcf->codes = lcf->codes;
|
|
580
|
|
581
|
|
582 save = *cf;
|
|
583 cf->ctx = ctx;
|
|
584
|
|
585 if (pclcf->name.len == 0) {
|
|
586 if_code->loc_conf = NULL;
|
|
587 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
588
|
|
589 } else {
|
|
590 if_code->loc_conf = ctx->loc_conf;
|
|
591 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
592 }
|
|
593
|
|
594 rv = ngx_conf_parse(cf, NULL);
|
|
595
|
|
596 *cf = save;
|
|
597
|
|
598 if (rv != NGX_CONF_OK) {
|
|
599 return rv;
|
|
600 }
|
|
601
|
|
602
|
|
603 if (elts != lcf->codes->elts) {
|
58
|
604 if_code = (ngx_http_script_if_code_t *)
|
50
|
605 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
606 }
|
|
607
|
|
608 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
609 - (u_char *) if_code;
|
|
610
|
104
|
611 /* the code array belong to parent block */
|
|
612
|
|
613 nlcf->codes = NULL;
|
|
614
|
50
|
615 return NGX_CONF_OK;
|
|
616 }
|
|
617
|
|
618
|
|
619 static char *
|
|
620 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf)
|
|
621 {
|
180
|
622 u_char *p;
|
|
623 size_t len;
|
58
|
624 ngx_str_t *value, err;
|
64
|
625 ngx_uint_t cur, last, n;
|
126
|
626 ngx_http_script_code_pt *code;
|
180
|
627 ngx_http_script_file_code_t *fop;
|
58
|
628 ngx_http_script_regex_code_t *regex;
|
|
629 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
50
|
630
|
|
631 value = cf->args->elts;
|
|
632 last = cf->args->nelts - 1;
|
|
633
|
|
634 if (value[1].len < 1 || value[1].data[0] != '(') {
|
|
635 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
636 "invalid condition \"%V\"", &value[1]);
|
|
637 return NGX_CONF_ERROR;
|
|
638 }
|
|
639
|
|
640 if (value[1].len == 1) {
|
|
641 cur = 2;
|
|
642
|
|
643 } else {
|
|
644 cur = 1;
|
|
645 value[1].len--;
|
|
646 value[1].data++;
|
|
647 }
|
|
648
|
|
649 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') {
|
|
650 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
651 "invalid condition \"%V\"", &value[last]);
|
|
652 return NGX_CONF_ERROR;
|
|
653 }
|
|
654
|
|
655 if (value[last].len == 1) {
|
|
656 last--;
|
|
657
|
|
658 } else {
|
|
659 value[last].len--;
|
|
660 value[last].data[value[last].len] = '\0';
|
|
661 }
|
|
662
|
180
|
663 len = value[cur].len;
|
|
664 p = value[cur].data;
|
|
665
|
|
666 if (len > 1 && p[0] == '$') {
|
50
|
667
|
|
668 if (cur != last && cur + 2 != last) {
|
|
669 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
180
|
670 "invalid condition \"%V\"", &value[cur]);
|
50
|
671 return NGX_CONF_ERROR;
|
|
672 }
|
|
673
|
126
|
674 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) {
|
50
|
675 return NGX_CONF_ERROR;
|
|
676 }
|
|
677
|
|
678 if (cur == last) {
|
|
679 return NGX_CONF_OK;
|
|
680 }
|
|
681
|
|
682 cur++;
|
|
683
|
180
|
684 len = value[cur].len;
|
|
685 p = value[cur].data;
|
|
686
|
|
687 if (len == 1 && p[0] == '=') {
|
126
|
688
|
|
689 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
690 return NGX_CONF_ERROR;
|
|
691 }
|
|
692
|
|
693 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
694 sizeof(uintptr_t));
|
|
695 if (code == NULL) {
|
|
696 return NGX_CONF_ERROR;
|
|
697 }
|
|
698
|
|
699 *code = ngx_http_script_equal_code;
|
|
700
|
|
701 return NGX_CONF_OK;
|
50
|
702 }
|
|
703
|
180
|
704 if (len == 2 && p[0] == '!' && p[1] == '=') {
|
|
705
|
126
|
706 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
707 return NGX_CONF_ERROR;
|
|
708 }
|
|
709
|
|
710 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
711 sizeof(uintptr_t));
|
|
712 if (code == NULL) {
|
|
713 return NGX_CONF_ERROR;
|
|
714 }
|
|
715
|
|
716 *code = ngx_http_script_not_equal_code;
|
|
717 return NGX_CONF_OK;
|
50
|
718 }
|
|
719
|
180
|
720 if ((len == 1 && p[0] == '~')
|
|
721 || (len == 2 && p[0] == '~' && p[1] == '*')
|
|
722 || (len == 2 && p[0] == '!' && p[1] == '~')
|
|
723 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*'))
|
126
|
724 {
|
|
725 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
726 sizeof(ngx_http_script_regex_code_t));
|
|
727 if (regex == NULL) {
|
|
728 return NGX_CONF_ERROR;
|
|
729 }
|
58
|
730
|
126
|
731 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
|
|
732
|
|
733 err.len = NGX_MAX_CONF_ERRSTR;
|
|
734 err.data = errstr;
|
|
735
|
|
736 regex->regex = ngx_regex_compile(&value[last],
|
180
|
737 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0,
|
|
738 cf->pool, &err);
|
50
|
739
|
126
|
740 if (regex->regex == NULL) {
|
|
741 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
742 return NGX_CONF_ERROR;
|
|
743 }
|
|
744
|
|
745 regex->code = ngx_http_script_regex_start_code;
|
|
746 regex->next = sizeof(ngx_http_script_regex_code_t);
|
|
747 regex->test = 1;
|
180
|
748 if (p[0] == '!') {
|
|
749 regex->negative_test = 1;
|
|
750 }
|
126
|
751 regex->name = value[last];
|
50
|
752
|
126
|
753 n = ngx_regex_capture_count(regex->regex);
|
|
754
|
|
755 if (n) {
|
|
756 regex->ncaptures = (n + 1) * 3;
|
|
757 }
|
|
758
|
|
759 return NGX_CONF_OK;
|
50
|
760 }
|
|
761
|
126
|
762 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
763 "unexpected \"%V\" in condition", &value[cur]);
|
|
764 return NGX_CONF_ERROR;
|
180
|
765
|
|
766 } else if ((len == 2 && p[0] == '-')
|
|
767 || (len == 3 && p[0] == '!' && p[1] == '-'))
|
|
768 {
|
|
769 if (cur + 1 != last) {
|
|
770 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
771 "invalid condition \"%V\"", &value[cur]);
|
|
772 return NGX_CONF_ERROR;
|
|
773 }
|
|
774
|
|
775 value[last].data[value[last].len] = '\0';
|
|
776 value[last].len++;
|
|
777
|
|
778 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
779 return NGX_CONF_ERROR;
|
|
780 }
|
|
781
|
|
782 fop = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
783 sizeof(ngx_http_script_file_code_t));
|
|
784 if (fop == NULL) {
|
|
785 return NGX_CONF_ERROR;
|
|
786 }
|
|
787
|
|
788 fop->code = ngx_http_script_file_code;
|
|
789
|
|
790 if (p[1] == 'f') {
|
|
791 fop->op = ngx_http_script_file_plain;
|
|
792 return NGX_CONF_OK;
|
|
793 }
|
|
794
|
218
|
795 if (p[1] == 'd') {
|
|
796 fop->op = ngx_http_script_file_dir;
|
|
797 return NGX_CONF_OK;
|
|
798 }
|
|
799
|
|
800 if (p[1] == 'e') {
|
|
801 fop->op = ngx_http_script_file_exists;
|
|
802 return NGX_CONF_OK;
|
|
803 }
|
|
804
|
|
805 if (p[1] == 'x') {
|
|
806 fop->op = ngx_http_script_file_exec;
|
|
807 return NGX_CONF_OK;
|
|
808 }
|
|
809
|
180
|
810 if (p[0] == '!') {
|
|
811 if (p[2] == 'f') {
|
|
812 fop->op = ngx_http_script_file_not_plain;
|
|
813 return NGX_CONF_OK;
|
|
814 }
|
218
|
815
|
|
816 if (p[2] == 'd') {
|
|
817 fop->op = ngx_http_script_file_not_dir;
|
|
818 return NGX_CONF_OK;
|
|
819 }
|
|
820
|
|
821 if (p[2] == 'e') {
|
|
822 fop->op = ngx_http_script_file_not_exists;
|
|
823 return NGX_CONF_OK;
|
|
824 }
|
|
825
|
|
826 if (p[2] == 'x') {
|
|
827 fop->op = ngx_http_script_file_not_exec;
|
|
828 return NGX_CONF_OK;
|
|
829 }
|
180
|
830 }
|
|
831
|
|
832 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
833 "invalid condition \"%V\"", &value[cur]);
|
|
834 return NGX_CONF_ERROR;
|
50
|
835 }
|
|
836
|
|
837 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
838 "invalid condition \"%V\"", &value[cur]);
|
|
839
|
|
840 return NGX_CONF_ERROR;
|
|
841 }
|
|
842
|
|
843
|
|
844 static char *
|
|
845 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
846 ngx_str_t *value)
|
|
847 {
|
58
|
848 ngx_int_t index;
|
|
849 ngx_http_script_var_code_t *var_code;
|
50
|
850
|
|
851 value->len--;
|
|
852 value->data++;
|
|
853
|
126
|
854 index = ngx_http_get_variable_index(cf, value);
|
50
|
855
|
126
|
856 if (index == NGX_ERROR) {
|
|
857 return NGX_CONF_ERROR;
|
50
|
858 }
|
|
859
|
126
|
860 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
861 sizeof(ngx_http_script_var_code_t));
|
|
862 if (var_code == NULL) {
|
|
863 return NGX_CONF_ERROR;
|
50
|
864 }
|
|
865
|
126
|
866 var_code->code = ngx_http_script_var_code;
|
|
867 var_code->index = index;
|
50
|
868
|
|
869 return NGX_CONF_OK;
|
|
870 }
|
|
871
|
|
872
|
|
873 static char *
|
|
874 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
875 {
|
126
|
876 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
877
|
186
|
878 ngx_int_t index;
|
|
879 ngx_str_t *value;
|
|
880 ngx_http_variable_t *v;
|
|
881 ngx_http_script_var_code_t *vcode;
|
|
882 ngx_http_script_var_handler_code_t *vhcode;
|
50
|
883
|
|
884 value = cf->args->elts;
|
|
885
|
|
886 if (value[1].data[0] != '$') {
|
|
887 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
888 "invalid variable name \"%V\"", &value[1]);
|
|
889 return NGX_CONF_ERROR;
|
|
890 }
|
|
891
|
|
892 value[1].len--;
|
|
893 value[1].data++;
|
|
894
|
340
|
895 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE);
|
50
|
896 if (v == NULL) {
|
|
897 return NGX_CONF_ERROR;
|
|
898 }
|
|
899
|
58
|
900 index = ngx_http_get_variable_index(cf, &value[1]);
|
|
901 if (index == NGX_ERROR) {
|
|
902 return NGX_CONF_ERROR;
|
|
903 }
|
50
|
904
|
300
|
905 if (v->get_handler == NULL
|
|
906 && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0
|
|
907 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0
|
|
908 && ngx_strncasecmp(value[1].data, (u_char *) "upstream_http_", 14) != 0)
|
|
909 {
|
186
|
910 v->get_handler = ngx_http_rewrite_var;
|
104
|
911 v->data = index;
|
|
912 }
|
58
|
913
|
126
|
914 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) {
|
|
915 return NGX_CONF_ERROR;
|
64
|
916 }
|
50
|
917
|
186
|
918 if (v->set_handler) {
|
|
919 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
920 sizeof(ngx_http_script_var_handler_code_t));
|
|
921 if (vhcode == NULL) {
|
|
922 return NGX_CONF_ERROR;
|
|
923 }
|
|
924
|
|
925 vhcode->code = ngx_http_script_var_set_handler_code;
|
|
926 vhcode->handler = v->set_handler;
|
|
927 vhcode->data = v->data;
|
|
928
|
|
929 return NGX_CONF_OK;
|
|
930 }
|
|
931
|
|
932 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
933 sizeof(ngx_http_script_var_code_t));
|
|
934 if (vcode == NULL) {
|
50
|
935 return NGX_CONF_ERROR;
|
|
936 }
|
|
937
|
186
|
938 vcode->code = ngx_http_script_set_var_code;
|
|
939 vcode->index = (uintptr_t) index;
|
50
|
940
|
|
941 return NGX_CONF_OK;
|
|
942 }
|
126
|
943
|
|
944
|
|
945 static char *
|
|
946 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
947 ngx_str_t *value)
|
|
948 {
|
|
949 ngx_int_t n;
|
|
950 ngx_http_script_compile_t sc;
|
|
951 ngx_http_script_value_code_t *val;
|
|
952 ngx_http_script_complex_value_code_t *complex;
|
|
953
|
|
954 n = ngx_http_script_variables_count(value);
|
|
955
|
|
956 if (n == 0) {
|
|
957 val = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
958 sizeof(ngx_http_script_value_code_t));
|
|
959 if (val == NULL) {
|
|
960 return NGX_CONF_ERROR;
|
|
961 }
|
|
962
|
|
963 n = ngx_atoi(value->data, value->len);
|
|
964
|
|
965 if (n == NGX_ERROR) {
|
|
966 n = 0;
|
|
967 }
|
|
968
|
|
969 val->code = ngx_http_script_value_code;
|
|
970 val->value = (uintptr_t) n;
|
|
971 val->text_len = (uintptr_t) value->len;
|
|
972 val->text_data = (uintptr_t) value->data;
|
|
973
|
|
974 return NGX_CONF_OK;
|
|
975 }
|
|
976
|
|
977 complex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
978 sizeof(ngx_http_script_complex_value_code_t));
|
|
979 if (complex == NULL) {
|
|
980 return NGX_CONF_ERROR;
|
|
981 }
|
|
982
|
|
983 complex->code = ngx_http_script_complex_value_code;
|
|
984 complex->lengths = NULL;
|
|
985
|
|
986 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
987
|
|
988 sc.cf = cf;
|
|
989 sc.source = value;
|
|
990 sc.lengths = &complex->lengths;
|
|
991 sc.values = &lcf->codes;
|
|
992 sc.variables = n;
|
|
993 sc.complete_lengths = 1;
|
|
994
|
|
995 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
996 return NGX_CONF_ERROR;
|
|
997 }
|
|
998
|
|
999 return NGX_CONF_OK;
|
|
1000 }
|