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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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50
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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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50
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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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50
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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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58
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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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58
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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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50
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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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50
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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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58
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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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58
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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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58
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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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184
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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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50
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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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68
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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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126
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210 *v = ngx_http_variable_null_value;
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122
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211
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212 return NGX_OK;
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50
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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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505
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223 return NULL;
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50
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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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184
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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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184
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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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58
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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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58
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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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58
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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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58
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290
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291
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50
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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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58
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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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58
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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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50
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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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58
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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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58
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328 regex->code = ngx_http_script_regex_start_code;
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50
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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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50
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341 last = 0;
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342
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343 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
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344 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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345 regex->redirect = 1;
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346 last = 1;
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347 }
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348
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382
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349 if (ngx_strncmp(value[2].data, "https://", sizeof("https://") - 1) == 0) {
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350 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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351 regex->redirect = 1;
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352 last = 1;
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353 }
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354
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50
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355 if (cf->args->nelts == 4) {
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356 if (ngx_strcmp(value[3].data, "last") == 0) {
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357 last = 1;
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358
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359 } else if (ngx_strcmp(value[3].data, "break") == 0) {
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360 regex->break_cycle = 1;
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361 last = 1;
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362
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363 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
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364 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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365 regex->redirect = 1;
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366 last = 1;
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367
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368 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
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369 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
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370 regex->redirect = 1;
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371 last = 1;
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372
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373 } else {
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374 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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375 "invalid parameter \"%V\"", &value[3]);
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376 return NGX_CONF_ERROR;
|
|
|
377 }
|
|
|
378 }
|
|
|
379
|
|
58
|
380 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
50
|
381
|
|
58
|
382 sc.cf = cf;
|
|
|
383 sc.source = &value[2];
|
|
|
384 sc.lengths = ®ex->lengths;
|
|
|
385 sc.values = &lcf->codes;
|
|
|
386 sc.variables = ngx_http_script_variables_count(&value[2]);
|
|
|
387 sc.main = regex;
|
|
|
388 sc.complete_lengths = 1;
|
|
|
389 sc.compile_args = !regex->redirect;
|
|
50
|
390
|
|
58
|
391 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
|
392 return NGX_CONF_ERROR;
|
|
|
393 }
|
|
50
|
394
|
|
58
|
395 regex = sc.main;
|
|
50
|
396
|
|
58
|
397 regex->ncaptures = sc.ncaptures;
|
|
|
398 regex->size = sc.size;
|
|
|
399 regex->args = sc.args;
|
|
50
|
400
|
|
190
|
401 if (sc.variables == 0 && !sc.dup_capture) {
|
|
58
|
402 regex->lengths = NULL;
|
|
50
|
403 }
|
|
|
404
|
|
|
405 n = ngx_regex_capture_count(regex->regex);
|
|
|
406
|
|
|
407 if (n < 0) {
|
|
|
408 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
409 ngx_regex_capture_count_n " failed for "
|
|
|
410 "pattern \"%V\"", &value[1]);
|
|
|
411 return NGX_CONF_ERROR;
|
|
|
412 }
|
|
|
413
|
|
|
414 if (regex->ncaptures > (ngx_uint_t) n) {
|
|
|
415 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
416 "pattern \"%V\" has less captures "
|
|
|
417 "than referrenced in substitution \"%V\"",
|
|
|
418 &value[1], &value[2]);
|
|
|
419 return NGX_CONF_ERROR;
|
|
|
420 }
|
|
|
421
|
|
|
422 if (regex->ncaptures < (ngx_uint_t) n) {
|
|
|
423 regex->ncaptures = (ngx_uint_t) n;
|
|
|
424 }
|
|
|
425
|
|
|
426 if (regex->ncaptures) {
|
|
|
427 regex->ncaptures = (regex->ncaptures + 1) * 3;
|
|
58
|
428 }
|
|
|
429
|
|
|
430 regex_end = ngx_http_script_add_code(lcf->codes,
|
|
|
431 sizeof(ngx_http_script_regex_end_code_t),
|
|
|
432 ®ex);
|
|
50
|
433 if (regex_end == NULL) {
|
|
|
434 return NGX_CONF_ERROR;
|
|
|
435 }
|
|
|
436
|
|
58
|
437 regex_end->code = ngx_http_script_regex_end_code;
|
|
50
|
438 regex_end->uri = regex->uri;
|
|
|
439 regex_end->args = regex->args;
|
|
58
|
440 regex_end->add_args = regex->add_args;
|
|
50
|
441 regex_end->redirect = regex->redirect;
|
|
|
442
|
|
|
443 if (last) {
|
|
66
|
444 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex);
|
|
50
|
445 if (code == NULL) {
|
|
|
446 return NGX_CONF_ERROR;
|
|
|
447 }
|
|
|
448
|
|
|
449 *code = (uintptr_t) NULL;
|
|
|
450 }
|
|
|
451
|
|
|
452 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
453 - (u_char *) regex;
|
|
|
454
|
|
|
455 return NGX_CONF_OK;
|
|
|
456 }
|
|
|
457
|
|
|
458
|
|
|
459 static char *
|
|
|
460 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
461 {
|
|
126
|
462 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
463
|
|
58
|
464 ngx_str_t *value;
|
|
|
465 ngx_http_script_return_code_t *ret;
|
|
50
|
466
|
|
58
|
467 ret = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
468 sizeof(ngx_http_script_return_code_t));
|
|
50
|
469 if (ret == NULL) {
|
|
|
470 return NGX_CONF_ERROR;
|
|
|
471 }
|
|
|
472
|
|
|
473 value = cf->args->elts;
|
|
|
474
|
|
58
|
475 ret->code = ngx_http_script_return_code;
|
|
50
|
476 ret->null = (uintptr_t) NULL;
|
|
|
477
|
|
|
478 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
|
479
|
|
|
480 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
|
481 return NGX_CONF_ERROR;
|
|
|
482 }
|
|
|
483
|
|
|
484 return NGX_CONF_OK;
|
|
|
485 }
|
|
|
486
|
|
|
487
|
|
|
488 static char *
|
|
76
|
489 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
490 {
|
|
|
491 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
492
|
|
|
493 ngx_http_script_code_pt *code;
|
|
|
494
|
|
|
495 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t));
|
|
|
496 if (code == NULL) {
|
|
|
497 return NGX_CONF_ERROR;
|
|
|
498 }
|
|
|
499
|
|
|
500 *code = ngx_http_script_break_code;
|
|
|
501
|
|
|
502 return NGX_CONF_OK;
|
|
|
503 }
|
|
|
504
|
|
|
505
|
|
|
506 static char *
|
|
50
|
507 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
508 {
|
|
126
|
509 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
510
|
|
|
511 void *mconf;
|
|
|
512 char *rv;
|
|
|
513 u_char *elts;
|
|
|
514 ngx_uint_t i;
|
|
|
515 ngx_conf_t save;
|
|
|
516 ngx_http_module_t *module;
|
|
|
517 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
378
|
518 ngx_http_core_loc_conf_t *clcf, *pclcf;
|
|
58
|
519 ngx_http_script_if_code_t *if_code;
|
|
50
|
520 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
|
521
|
|
|
522 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
523 if (ctx == NULL) {
|
|
|
524 return NGX_CONF_ERROR;
|
|
|
525 }
|
|
|
526
|
|
|
527 pctx = cf->ctx;
|
|
|
528 ctx->main_conf = pctx->main_conf;
|
|
126
|
529 ctx->srv_conf = pctx->srv_conf;
|
|
50
|
530
|
|
|
531 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
532 if (ctx->loc_conf == NULL) {
|
|
|
533 return NGX_CONF_ERROR;
|
|
|
534 }
|
|
|
535
|
|
|
536 for (i = 0; ngx_modules[i]; i++) {
|
|
|
537 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
|
538 continue;
|
|
|
539 }
|
|
|
540
|
|
|
541 module = ngx_modules[i]->ctx;
|
|
126
|
542
|
|
50
|
543 if (module->create_loc_conf) {
|
|
|
544
|
|
|
545 mconf = module->create_loc_conf(cf);
|
|
|
546 if (mconf == NULL) {
|
|
|
547 return NGX_CONF_ERROR;
|
|
|
548 }
|
|
|
549
|
|
|
550 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
|
551 }
|
|
|
552 }
|
|
|
553
|
|
|
554 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
555
|
|
|
556 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
557 clcf->loc_conf = ctx->loc_conf;
|
|
|
558 clcf->name = pclcf->name;
|
|
|
559 clcf->noname = 1;
|
|
|
560
|
|
378
|
561 if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) {
|
|
50
|
562 return NGX_CONF_ERROR;
|
|
|
563 }
|
|
|
564
|
|
|
565 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) {
|
|
|
566 return NGX_CONF_ERROR;
|
|
|
567 }
|
|
|
568
|
|
58
|
569 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t));
|
|
50
|
570 if (if_code == NULL) {
|
|
|
571 return NULL;
|
|
|
572 }
|
|
|
573
|
|
58
|
574 if_code->code = ngx_http_script_if_code;
|
|
50
|
575
|
|
|
576 elts = lcf->codes->elts;
|
|
|
577
|
|
|
578
|
|
180
|
579 /* the inner directives must be compiled to the same code array */
|
|
50
|
580
|
|
|
581 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
|
582 nlcf->codes = lcf->codes;
|
|
|
583
|
|
|
584
|
|
|
585 save = *cf;
|
|
|
586 cf->ctx = ctx;
|
|
|
587
|
|
|
588 if (pclcf->name.len == 0) {
|
|
|
589 if_code->loc_conf = NULL;
|
|
|
590 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
|
591
|
|
|
592 } else {
|
|
|
593 if_code->loc_conf = ctx->loc_conf;
|
|
|
594 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
|
595 }
|
|
|
596
|
|
|
597 rv = ngx_conf_parse(cf, NULL);
|
|
|
598
|
|
|
599 *cf = save;
|
|
|
600
|
|
|
601 if (rv != NGX_CONF_OK) {
|
|
|
602 return rv;
|
|
|
603 }
|
|
|
604
|
|
|
605
|
|
|
606 if (elts != lcf->codes->elts) {
|
|
58
|
607 if_code = (ngx_http_script_if_code_t *)
|
|
50
|
608 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
|
609 }
|
|
|
610
|
|
|
611 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
612 - (u_char *) if_code;
|
|
|
613
|
|
104
|
614 /* the code array belong to parent block */
|
|
|
615
|
|
|
616 nlcf->codes = NULL;
|
|
|
617
|
|
50
|
618 return NGX_CONF_OK;
|
|
|
619 }
|
|
|
620
|
|
|
621
|
|
|
622 static char *
|
|
|
623 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf)
|
|
|
624 {
|
|
180
|
625 u_char *p;
|
|
|
626 size_t len;
|
|
58
|
627 ngx_str_t *value, err;
|
|
64
|
628 ngx_uint_t cur, last, n;
|
|
126
|
629 ngx_http_script_code_pt *code;
|
|
180
|
630 ngx_http_script_file_code_t *fop;
|
|
58
|
631 ngx_http_script_regex_code_t *regex;
|
|
|
632 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
50
|
633
|
|
|
634 value = cf->args->elts;
|
|
|
635 last = cf->args->nelts - 1;
|
|
|
636
|
|
|
637 if (value[1].len < 1 || value[1].data[0] != '(') {
|
|
|
638 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
639 "invalid condition \"%V\"", &value[1]);
|
|
|
640 return NGX_CONF_ERROR;
|
|
|
641 }
|
|
|
642
|
|
|
643 if (value[1].len == 1) {
|
|
|
644 cur = 2;
|
|
|
645
|
|
|
646 } else {
|
|
|
647 cur = 1;
|
|
|
648 value[1].len--;
|
|
|
649 value[1].data++;
|
|
|
650 }
|
|
|
651
|
|
|
652 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') {
|
|
|
653 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
654 "invalid condition \"%V\"", &value[last]);
|
|
|
655 return NGX_CONF_ERROR;
|
|
|
656 }
|
|
|
657
|
|
|
658 if (value[last].len == 1) {
|
|
|
659 last--;
|
|
|
660
|
|
|
661 } else {
|
|
|
662 value[last].len--;
|
|
|
663 value[last].data[value[last].len] = '\0';
|
|
|
664 }
|
|
|
665
|
|
180
|
666 len = value[cur].len;
|
|
|
667 p = value[cur].data;
|
|
|
668
|
|
|
669 if (len > 1 && p[0] == '$') {
|
|
50
|
670
|
|
|
671 if (cur != last && cur + 2 != last) {
|
|
|
672 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
180
|
673 "invalid condition \"%V\"", &value[cur]);
|
|
50
|
674 return NGX_CONF_ERROR;
|
|
|
675 }
|
|
|
676
|
|
126
|
677 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) {
|
|
50
|
678 return NGX_CONF_ERROR;
|
|
|
679 }
|
|
|
680
|
|
|
681 if (cur == last) {
|
|
|
682 return NGX_CONF_OK;
|
|
|
683 }
|
|
|
684
|
|
|
685 cur++;
|
|
|
686
|
|
180
|
687 len = value[cur].len;
|
|
|
688 p = value[cur].data;
|
|
|
689
|
|
|
690 if (len == 1 && p[0] == '=') {
|
|
126
|
691
|
|
|
692 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
693 return NGX_CONF_ERROR;
|
|
|
694 }
|
|
|
695
|
|
|
696 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
697 sizeof(uintptr_t));
|
|
|
698 if (code == NULL) {
|
|
|
699 return NGX_CONF_ERROR;
|
|
|
700 }
|
|
|
701
|
|
|
702 *code = ngx_http_script_equal_code;
|
|
|
703
|
|
|
704 return NGX_CONF_OK;
|
|
50
|
705 }
|
|
|
706
|
|
180
|
707 if (len == 2 && p[0] == '!' && p[1] == '=') {
|
|
|
708
|
|
126
|
709 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
710 return NGX_CONF_ERROR;
|
|
|
711 }
|
|
|
712
|
|
|
713 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
714 sizeof(uintptr_t));
|
|
|
715 if (code == NULL) {
|
|
|
716 return NGX_CONF_ERROR;
|
|
|
717 }
|
|
|
718
|
|
|
719 *code = ngx_http_script_not_equal_code;
|
|
|
720 return NGX_CONF_OK;
|
|
50
|
721 }
|
|
|
722
|
|
180
|
723 if ((len == 1 && p[0] == '~')
|
|
|
724 || (len == 2 && p[0] == '~' && p[1] == '*')
|
|
|
725 || (len == 2 && p[0] == '!' && p[1] == '~')
|
|
|
726 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*'))
|
|
126
|
727 {
|
|
|
728 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
729 sizeof(ngx_http_script_regex_code_t));
|
|
|
730 if (regex == NULL) {
|
|
|
731 return NGX_CONF_ERROR;
|
|
|
732 }
|
|
58
|
733
|
|
126
|
734 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
|
|
|
735
|
|
|
736 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
737 err.data = errstr;
|
|
|
738
|
|
|
739 regex->regex = ngx_regex_compile(&value[last],
|
|
180
|
740 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0,
|
|
|
741 cf->pool, &err);
|
|
50
|
742
|
|
126
|
743 if (regex->regex == NULL) {
|
|
|
744 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
745 return NGX_CONF_ERROR;
|
|
|
746 }
|
|
|
747
|
|
|
748 regex->code = ngx_http_script_regex_start_code;
|
|
|
749 regex->next = sizeof(ngx_http_script_regex_code_t);
|
|
|
750 regex->test = 1;
|
|
180
|
751 if (p[0] == '!') {
|
|
|
752 regex->negative_test = 1;
|
|
|
753 }
|
|
126
|
754 regex->name = value[last];
|
|
50
|
755
|
|
126
|
756 n = ngx_regex_capture_count(regex->regex);
|
|
|
757
|
|
|
758 if (n) {
|
|
|
759 regex->ncaptures = (n + 1) * 3;
|
|
|
760 }
|
|
|
761
|
|
|
762 return NGX_CONF_OK;
|
|
50
|
763 }
|
|
|
764
|
|
126
|
765 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
766 "unexpected \"%V\" in condition", &value[cur]);
|
|
|
767 return NGX_CONF_ERROR;
|
|
180
|
768
|
|
|
769 } else if ((len == 2 && p[0] == '-')
|
|
|
770 || (len == 3 && p[0] == '!' && p[1] == '-'))
|
|
|
771 {
|
|
|
772 if (cur + 1 != last) {
|
|
|
773 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
774 "invalid condition \"%V\"", &value[cur]);
|
|
|
775 return NGX_CONF_ERROR;
|
|
|
776 }
|
|
|
777
|
|
|
778 value[last].data[value[last].len] = '\0';
|
|
|
779 value[last].len++;
|
|
|
780
|
|
|
781 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
782 return NGX_CONF_ERROR;
|
|
|
783 }
|
|
|
784
|
|
|
785 fop = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
786 sizeof(ngx_http_script_file_code_t));
|
|
|
787 if (fop == NULL) {
|
|
|
788 return NGX_CONF_ERROR;
|
|
|
789 }
|
|
|
790
|
|
|
791 fop->code = ngx_http_script_file_code;
|
|
|
792
|
|
|
793 if (p[1] == 'f') {
|
|
|
794 fop->op = ngx_http_script_file_plain;
|
|
|
795 return NGX_CONF_OK;
|
|
|
796 }
|
|
|
797
|
|
218
|
798 if (p[1] == 'd') {
|
|
|
799 fop->op = ngx_http_script_file_dir;
|
|
|
800 return NGX_CONF_OK;
|
|
|
801 }
|
|
|
802
|
|
|
803 if (p[1] == 'e') {
|
|
|
804 fop->op = ngx_http_script_file_exists;
|
|
|
805 return NGX_CONF_OK;
|
|
|
806 }
|
|
|
807
|
|
|
808 if (p[1] == 'x') {
|
|
|
809 fop->op = ngx_http_script_file_exec;
|
|
|
810 return NGX_CONF_OK;
|
|
|
811 }
|
|
|
812
|
|
180
|
813 if (p[0] == '!') {
|
|
|
814 if (p[2] == 'f') {
|
|
|
815 fop->op = ngx_http_script_file_not_plain;
|
|
|
816 return NGX_CONF_OK;
|
|
|
817 }
|
|
218
|
818
|
|
|
819 if (p[2] == 'd') {
|
|
|
820 fop->op = ngx_http_script_file_not_dir;
|
|
|
821 return NGX_CONF_OK;
|
|
|
822 }
|
|
|
823
|
|
|
824 if (p[2] == 'e') {
|
|
|
825 fop->op = ngx_http_script_file_not_exists;
|
|
|
826 return NGX_CONF_OK;
|
|
|
827 }
|
|
|
828
|
|
|
829 if (p[2] == 'x') {
|
|
|
830 fop->op = ngx_http_script_file_not_exec;
|
|
|
831 return NGX_CONF_OK;
|
|
|
832 }
|
|
180
|
833 }
|
|
|
834
|
|
|
835 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
836 "invalid condition \"%V\"", &value[cur]);
|
|
|
837 return NGX_CONF_ERROR;
|
|
50
|
838 }
|
|
|
839
|
|
|
840 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
841 "invalid condition \"%V\"", &value[cur]);
|
|
|
842
|
|
|
843 return NGX_CONF_ERROR;
|
|
|
844 }
|
|
|
845
|
|
|
846
|
|
|
847 static char *
|
|
|
848 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
|
849 ngx_str_t *value)
|
|
|
850 {
|
|
58
|
851 ngx_int_t index;
|
|
|
852 ngx_http_script_var_code_t *var_code;
|
|
50
|
853
|
|
|
854 value->len--;
|
|
|
855 value->data++;
|
|
|
856
|
|
126
|
857 index = ngx_http_get_variable_index(cf, value);
|
|
50
|
858
|
|
126
|
859 if (index == NGX_ERROR) {
|
|
|
860 return NGX_CONF_ERROR;
|
|
50
|
861 }
|
|
|
862
|
|
126
|
863 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
864 sizeof(ngx_http_script_var_code_t));
|
|
|
865 if (var_code == NULL) {
|
|
|
866 return NGX_CONF_ERROR;
|
|
50
|
867 }
|
|
|
868
|
|
126
|
869 var_code->code = ngx_http_script_var_code;
|
|
|
870 var_code->index = index;
|
|
50
|
871
|
|
|
872 return NGX_CONF_OK;
|
|
|
873 }
|
|
|
874
|
|
|
875
|
|
|
876 static char *
|
|
|
877 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
878 {
|
|
126
|
879 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
880
|
|
186
|
881 ngx_int_t index;
|
|
|
882 ngx_str_t *value;
|
|
|
883 ngx_http_variable_t *v;
|
|
|
884 ngx_http_script_var_code_t *vcode;
|
|
|
885 ngx_http_script_var_handler_code_t *vhcode;
|
|
50
|
886
|
|
|
887 value = cf->args->elts;
|
|
|
888
|
|
|
889 if (value[1].data[0] != '$') {
|
|
|
890 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
891 "invalid variable name \"%V\"", &value[1]);
|
|
|
892 return NGX_CONF_ERROR;
|
|
|
893 }
|
|
|
894
|
|
|
895 value[1].len--;
|
|
|
896 value[1].data++;
|
|
|
897
|
|
340
|
898 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE);
|
|
50
|
899 if (v == NULL) {
|
|
|
900 return NGX_CONF_ERROR;
|
|
|
901 }
|
|
|
902
|
|
58
|
903 index = ngx_http_get_variable_index(cf, &value[1]);
|
|
|
904 if (index == NGX_ERROR) {
|
|
|
905 return NGX_CONF_ERROR;
|
|
|
906 }
|
|
50
|
907
|
|
300
|
908 if (v->get_handler == NULL
|
|
|
909 && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0
|
|
|
910 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0
|
|
|
911 && ngx_strncasecmp(value[1].data, (u_char *) "upstream_http_", 14) != 0)
|
|
|
912 {
|
|
186
|
913 v->get_handler = ngx_http_rewrite_var;
|
|
104
|
914 v->data = index;
|
|
|
915 }
|
|
58
|
916
|
|
126
|
917 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) {
|
|
|
918 return NGX_CONF_ERROR;
|
|
64
|
919 }
|
|
50
|
920
|
|
186
|
921 if (v->set_handler) {
|
|
|
922 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
923 sizeof(ngx_http_script_var_handler_code_t));
|
|
|
924 if (vhcode == NULL) {
|
|
|
925 return NGX_CONF_ERROR;
|
|
|
926 }
|
|
|
927
|
|
|
928 vhcode->code = ngx_http_script_var_set_handler_code;
|
|
|
929 vhcode->handler = v->set_handler;
|
|
|
930 vhcode->data = v->data;
|
|
|
931
|
|
|
932 return NGX_CONF_OK;
|
|
|
933 }
|
|
|
934
|
|
|
935 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
936 sizeof(ngx_http_script_var_code_t));
|
|
|
937 if (vcode == NULL) {
|
|
50
|
938 return NGX_CONF_ERROR;
|
|
|
939 }
|
|
|
940
|
|
186
|
941 vcode->code = ngx_http_script_set_var_code;
|
|
|
942 vcode->index = (uintptr_t) index;
|
|
50
|
943
|
|
|
944 return NGX_CONF_OK;
|
|
|
945 }
|
|
126
|
946
|
|
|
947
|
|
|
948 static char *
|
|
|
949 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
|
950 ngx_str_t *value)
|
|
|
951 {
|
|
|
952 ngx_int_t n;
|
|
|
953 ngx_http_script_compile_t sc;
|
|
|
954 ngx_http_script_value_code_t *val;
|
|
|
955 ngx_http_script_complex_value_code_t *complex;
|
|
|
956
|
|
|
957 n = ngx_http_script_variables_count(value);
|
|
|
958
|
|
|
959 if (n == 0) {
|
|
|
960 val = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
961 sizeof(ngx_http_script_value_code_t));
|
|
|
962 if (val == NULL) {
|
|
|
963 return NGX_CONF_ERROR;
|
|
|
964 }
|
|
|
965
|
|
|
966 n = ngx_atoi(value->data, value->len);
|
|
|
967
|
|
|
968 if (n == NGX_ERROR) {
|
|
|
969 n = 0;
|
|
|
970 }
|
|
|
971
|
|
|
972 val->code = ngx_http_script_value_code;
|
|
|
973 val->value = (uintptr_t) n;
|
|
|
974 val->text_len = (uintptr_t) value->len;
|
|
|
975 val->text_data = (uintptr_t) value->data;
|
|
|
976
|
|
|
977 return NGX_CONF_OK;
|
|
|
978 }
|
|
|
979
|
|
|
980 complex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
981 sizeof(ngx_http_script_complex_value_code_t));
|
|
|
982 if (complex == NULL) {
|
|
|
983 return NGX_CONF_ERROR;
|
|
|
984 }
|
|
|
985
|
|
|
986 complex->code = ngx_http_script_complex_value_code;
|
|
|
987 complex->lengths = NULL;
|
|
|
988
|
|
|
989 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
|
990
|
|
|
991 sc.cf = cf;
|
|
|
992 sc.source = value;
|
|
|
993 sc.lengths = &complex->lengths;
|
|
|
994 sc.values = &lcf->codes;
|
|
|
995 sc.variables = n;
|
|
|
996 sc.complete_lengths = 1;
|
|
|
997
|
|
|
998 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
|
999 return NGX_CONF_ERROR;
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 return NGX_CONF_OK;
|
|
|
1003 }
|
