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 captures;
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16 ngx_uint_t stack_size;
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50
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17
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126
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18 ngx_flag_t log;
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184
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19 ngx_flag_t uninitialized_variable_warn;
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50
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20 } ngx_http_rewrite_loc_conf_t;
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21
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22
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23 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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24 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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25 void *parent, void *child);
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230
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26 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf);
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50
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27 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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28 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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29 void *conf);
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76
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30 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd,
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31 void *conf);
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50
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32 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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33 void *conf);
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34 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf,
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35 ngx_http_rewrite_loc_conf_t *lcf);
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36 static char *ngx_http_rewrite_variable(ngx_conf_t *cf,
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37 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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58
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38 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd,
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39 void *conf);
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126
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40 static char * ngx_http_rewrite_value(ngx_conf_t *cf,
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41 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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42
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43
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44 static ngx_command_t ngx_http_rewrite_commands[] = {
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45
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46 { ngx_string("rewrite"),
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47 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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48 |NGX_CONF_TAKE23,
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49 ngx_http_rewrite,
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50 NGX_HTTP_LOC_CONF_OFFSET,
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51 0,
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52 NULL },
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53
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54 { ngx_string("return"),
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55 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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56 |NGX_CONF_TAKE1,
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57 ngx_http_rewrite_return,
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58 NGX_HTTP_LOC_CONF_OFFSET,
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59 0,
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60 NULL },
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61
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76
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62 { ngx_string("break"),
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63 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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64 |NGX_CONF_NOARGS,
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65 ngx_http_rewrite_break,
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66 NGX_HTTP_LOC_CONF_OFFSET,
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67 0,
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68 NULL },
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69
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50
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70 { ngx_string("if"),
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71 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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72 ngx_http_rewrite_if,
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73 NGX_HTTP_LOC_CONF_OFFSET,
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74 0,
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75 NULL },
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76
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77 { ngx_string("set"),
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78 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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79 |NGX_CONF_TAKE2,
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80 ngx_http_rewrite_set,
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81 NGX_HTTP_LOC_CONF_OFFSET,
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82 0,
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83 NULL },
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84
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85 { ngx_string("rewrite_log"),
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184
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86 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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87 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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88 ngx_conf_set_flag_slot,
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89 NGX_HTTP_LOC_CONF_OFFSET,
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90 offsetof(ngx_http_rewrite_loc_conf_t, log),
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91 NULL },
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92
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184
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93 { ngx_string("uninitialized_variable_warn"),
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94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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95 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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96 ngx_conf_set_flag_slot,
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97 NGX_HTTP_LOC_CONF_OFFSET,
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98 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn),
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99 NULL },
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100
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50
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101 ngx_null_command
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102 };
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103
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104
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216
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105 static ngx_http_module_t ngx_http_rewrite_module_ctx = {
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106 NULL, /* preconfiguration */
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230
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107 ngx_http_rewrite_init, /* postconfiguration */
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108
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109 NULL, /* create main configuration */
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110 NULL, /* init main configuration */
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111
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112 NULL, /* create server configuration */
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113 NULL, /* merge server configuration */
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114
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115 ngx_http_rewrite_create_loc_conf, /* create location configration */
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116 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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117 };
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118
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119
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120 ngx_module_t ngx_http_rewrite_module = {
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58
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121 NGX_MODULE_V1,
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126
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122 &ngx_http_rewrite_module_ctx, /* module context */
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123 ngx_http_rewrite_commands, /* module directives */
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124 NGX_HTTP_MODULE, /* module type */
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90
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125 NULL, /* init master */
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230
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126 NULL, /* init module */
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90
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127 NULL, /* init process */
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128 NULL, /* init thread */
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129 NULL, /* exit thread */
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130 NULL, /* exit process */
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131 NULL, /* exit master */
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132 NGX_MODULE_V1_PADDING
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133 };
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134
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135
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136 static ngx_int_t
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137 ngx_http_rewrite_handler(ngx_http_request_t *r)
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138 {
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139 ngx_http_script_code_pt code;
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140 ngx_http_script_engine_t *e;
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184
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141 ngx_http_rewrite_loc_conf_t *rlcf;
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142
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184
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143 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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144
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184
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145 if (rlcf->codes == NULL) {
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146 return NGX_DECLINED;
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147 }
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148
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149 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t));
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150 if (e == NULL) {
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151 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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152 }
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153
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154 e->sp = ngx_pcalloc(r->pool,
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184
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155 rlcf->stack_size * sizeof(ngx_http_variable_value_t));
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156 if (e->sp == NULL) {
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157 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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158 }
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159
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184
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160 if (rlcf->captures) {
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161 e->captures = ngx_palloc(r->pool, rlcf->captures * sizeof(int));
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162 if (e->captures == NULL) {
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163 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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164 }
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165
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166 } else {
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167 e->captures = NULL;
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168 }
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169
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184
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170 e->ip = rlcf->codes->elts;
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171 e->request = r;
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172 e->quote = 1;
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184
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173 e->log = rlcf->log;
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174 e->status = NGX_DECLINED;
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175
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176 while (*(uintptr_t *) e->ip) {
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177 code = *(ngx_http_script_code_pt *) e->ip;
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178 code(e);
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179 }
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180
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238
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181 if (r->err_status == 0) {
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182 return e->status;
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183 }
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184
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185 return r->err_status;
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50
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186 }
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187
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188
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122
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189 static ngx_int_t
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190 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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191 uintptr_t data)
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192 {
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184
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193 ngx_http_variable_t *var;
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194 ngx_http_core_main_conf_t *cmcf;
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195 ngx_http_rewrite_loc_conf_t *rlcf;
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196
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197 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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198
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199 if (rlcf->uninitialized_variable_warn == 0) {
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200 *v = ngx_http_variable_null_value;
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201 return NGX_OK;
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202 }
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203
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204 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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205
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206 var = cmcf->variables.elts;
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207
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208 /*
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209 * the ngx_http_rewrite_module sets variables directly in r->variables,
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210 * and they should be handled by ngx_http_get_indexed_variable(),
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211 * so the handler is called only if the variable is not initialized
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212 */
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213
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184
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214 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
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215 "using uninitialized \"%V\" variable", &var[data].name);
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216
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217 *v = ngx_http_variable_null_value;
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122
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218
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219 return NGX_OK;
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220 }
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221
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222
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223 static void *
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224 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
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225 {
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226 ngx_http_rewrite_loc_conf_t *conf;
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227
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228 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t));
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229 if (conf == NULL) {
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230 return NGX_CONF_ERROR;
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231 }
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232
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233 conf->stack_size = NGX_CONF_UNSET_UINT;
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234 conf->log = NGX_CONF_UNSET;
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184
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235 conf->uninitialized_variable_warn = NGX_CONF_UNSET;
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236
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237 return conf;
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238 }
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239
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240
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241 static char *
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242 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
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243 {
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244 ngx_http_rewrite_loc_conf_t *prev = parent;
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245 ngx_http_rewrite_loc_conf_t *conf = child;
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246
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247 uintptr_t *code;
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248
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249 ngx_conf_merge_value(conf->log, prev->log, 0);
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250 ngx_conf_merge_value(conf->uninitialized_variable_warn,
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251 prev->uninitialized_variable_warn, 1);
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212
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252 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10);
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253
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254 if (conf->codes == NULL) {
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255 return NGX_CONF_OK;
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256 }
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257
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258 if (conf->codes == prev->codes) {
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259 return NGX_CONF_OK;
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260 }
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261
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262 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t));
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263 if (code == NULL) {
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264 return NGX_CONF_ERROR;
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265 }
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266
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267 *code = (uintptr_t) NULL;
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268
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269 return NGX_CONF_OK;
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270 }
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271
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272
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58
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273 static ngx_int_t
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230
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274 ngx_http_rewrite_init(ngx_conf_t *cf)
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126
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275 {
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276 ngx_http_handler_pt *h;
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277 ngx_http_core_main_conf_t *cmcf;
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278
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230
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279 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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280
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122
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281 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_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 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
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289 if (h == NULL) {
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290 return NGX_ERROR;
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291 }
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292
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293 *h = ngx_http_rewrite_handler;
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294
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295 return NGX_OK;
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126
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296 }
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58
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297
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298
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299 static char *
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300 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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301 {
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126
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302 ngx_http_rewrite_loc_conf_t *lcf = conf;
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303
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58
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304 ngx_str_t *value, err;
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305 ngx_int_t n;
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306 ngx_uint_t last;
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307 ngx_http_script_code_pt *code;
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308 ngx_http_script_compile_t sc;
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309 ngx_http_script_regex_code_t *regex;
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310 ngx_http_script_regex_end_code_t *regex_end;
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311 u_char errstr[NGX_MAX_CONF_ERRSTR];
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312
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313 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
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314 sizeof(ngx_http_script_regex_code_t));
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315 if (regex == NULL) {
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316 return NGX_CONF_ERROR;
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317 }
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318
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58
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319 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
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320
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321 value = cf->args->elts;
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322
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323 err.len = NGX_MAX_CONF_ERRSTR;
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324 err.data = errstr;
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325
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326 /* TODO: NGX_REGEX_CASELESS */
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327
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328 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
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329
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330 if (regex->regex == NULL) {
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331 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
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332 return NGX_CONF_ERROR;
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333 }
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334
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58
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335 regex->code = ngx_http_script_regex_start_code;
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336 regex->uri = 1;
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337 regex->name = value[1];
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338
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58
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339 if (value[2].data[value[2].len - 1] == '?') {
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340
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341 /* the last "?" drops the original arguments */
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342 value[2].len--;
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343
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344 } else {
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345 regex->add_args = 1;
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346 }
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347
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50
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348 last = 0;
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349
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350 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
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351 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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352 regex->redirect = 1;
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353 last = 1;
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354 }
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355
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356 if (cf->args->nelts == 4) {
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357 if (ngx_strcmp(value[3].data, "last") == 0) {
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358 last = 1;
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359
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360 } else if (ngx_strcmp(value[3].data, "break") == 0) {
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361 regex->break_cycle = 1;
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362 last = 1;
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363
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364 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
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365 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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366 regex->redirect = 1;
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367 last = 1;
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368
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369 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
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370 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
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371 regex->redirect = 1;
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372 last = 1;
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373
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374 } else {
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375 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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376 "invalid parameter \"%V\"", &value[3]);
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377 return NGX_CONF_ERROR;
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378 }
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379 }
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380
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58
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381 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
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382
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58
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383 sc.cf = cf;
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384 sc.source = &value[2];
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385 sc.lengths = ®ex->lengths;
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386 sc.values = &lcf->codes;
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387 sc.variables = ngx_http_script_variables_count(&value[2]);
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388 sc.main = regex;
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389 sc.complete_lengths = 1;
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390 sc.compile_args = !regex->redirect;
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50
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391
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58
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392 if (ngx_http_script_compile(&sc) != NGX_OK) {
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393 return NGX_CONF_ERROR;
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394 }
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50
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395
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58
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396 regex = sc.main;
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50
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397
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58
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398 regex->ncaptures = sc.ncaptures;
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399 regex->size = sc.size;
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400 regex->args = sc.args;
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50
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401
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190
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402 if (sc.variables == 0 && !sc.dup_capture) {
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58
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403 regex->lengths = NULL;
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50
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404 }
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405
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406 n = ngx_regex_capture_count(regex->regex);
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407
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408 if (n < 0) {
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409 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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410 ngx_regex_capture_count_n " failed for "
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411 "pattern \"%V\"", &value[1]);
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412 return NGX_CONF_ERROR;
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413 }
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414
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415 if (regex->ncaptures > (ngx_uint_t) n) {
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416 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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417 "pattern \"%V\" has less captures "
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418 "than referrenced in substitution \"%V\"",
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419 &value[1], &value[2]);
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420 return NGX_CONF_ERROR;
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421 }
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422
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423 if (regex->ncaptures < (ngx_uint_t) n) {
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424 regex->ncaptures = (ngx_uint_t) n;
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425 }
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426
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427 if (regex->ncaptures) {
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428 regex->ncaptures = (regex->ncaptures + 1) * 3;
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429
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64
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430 if (lcf->captures < regex->ncaptures) {
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431 lcf->captures = regex->ncaptures;
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432 }
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58
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433 }
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434
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435 regex_end = ngx_http_script_add_code(lcf->codes,
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436 sizeof(ngx_http_script_regex_end_code_t),
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437 ®ex);
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50
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438 if (regex_end == NULL) {
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439 return NGX_CONF_ERROR;
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|
440 }
|
|
441
|
58
|
442 regex_end->code = ngx_http_script_regex_end_code;
|
50
|
443 regex_end->uri = regex->uri;
|
|
444 regex_end->args = regex->args;
|
58
|
445 regex_end->add_args = regex->add_args;
|
50
|
446 regex_end->redirect = regex->redirect;
|
|
447
|
|
448 if (last) {
|
66
|
449 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex);
|
50
|
450 if (code == NULL) {
|
|
451 return NGX_CONF_ERROR;
|
|
452 }
|
|
453
|
|
454 *code = (uintptr_t) NULL;
|
|
455 }
|
|
456
|
|
457 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
458 - (u_char *) regex;
|
|
459
|
|
460 return NGX_CONF_OK;
|
|
461 }
|
|
462
|
|
463
|
|
464 static char *
|
|
465 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
466 {
|
126
|
467 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
468
|
58
|
469 ngx_str_t *value;
|
|
470 ngx_http_script_return_code_t *ret;
|
50
|
471
|
58
|
472 ret = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
473 sizeof(ngx_http_script_return_code_t));
|
50
|
474 if (ret == NULL) {
|
|
475 return NGX_CONF_ERROR;
|
|
476 }
|
|
477
|
|
478 value = cf->args->elts;
|
|
479
|
58
|
480 ret->code = ngx_http_script_return_code;
|
50
|
481 ret->null = (uintptr_t) NULL;
|
|
482
|
|
483 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
484
|
|
485 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
486 return NGX_CONF_ERROR;
|
|
487 }
|
|
488
|
|
489 return NGX_CONF_OK;
|
|
490 }
|
|
491
|
|
492
|
|
493 static char *
|
76
|
494 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
495 {
|
|
496 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
497
|
|
498 ngx_http_script_code_pt *code;
|
|
499
|
|
500 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t));
|
|
501 if (code == NULL) {
|
|
502 return NGX_CONF_ERROR;
|
|
503 }
|
|
504
|
|
505 *code = ngx_http_script_break_code;
|
|
506
|
|
507 return NGX_CONF_OK;
|
|
508 }
|
|
509
|
|
510
|
|
511 static char *
|
50
|
512 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
513 {
|
126
|
514 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
515
|
|
516 void *mconf;
|
|
517 char *rv;
|
|
518 u_char *elts;
|
|
519 ngx_uint_t i;
|
|
520 ngx_conf_t save;
|
|
521 ngx_http_module_t *module;
|
|
522 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
523 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp;
|
58
|
524 ngx_http_script_if_code_t *if_code;
|
50
|
525 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
526
|
|
527 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
528 if (ctx == NULL) {
|
|
529 return NGX_CONF_ERROR;
|
|
530 }
|
|
531
|
|
532 pctx = cf->ctx;
|
|
533 ctx->main_conf = pctx->main_conf;
|
126
|
534 ctx->srv_conf = pctx->srv_conf;
|
50
|
535
|
|
536 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
537 if (ctx->loc_conf == NULL) {
|
|
538 return NGX_CONF_ERROR;
|
|
539 }
|
|
540
|
|
541 for (i = 0; ngx_modules[i]; i++) {
|
|
542 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
543 continue;
|
|
544 }
|
|
545
|
|
546 module = ngx_modules[i]->ctx;
|
126
|
547
|
50
|
548 if (module->create_loc_conf) {
|
|
549
|
|
550 mconf = module->create_loc_conf(cf);
|
|
551 if (mconf == NULL) {
|
|
552 return NGX_CONF_ERROR;
|
|
553 }
|
|
554
|
|
555 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
556 }
|
|
557 }
|
|
558
|
|
559 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
560
|
|
561 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
562 clcf->loc_conf = ctx->loc_conf;
|
|
563 clcf->name = pclcf->name;
|
|
564 clcf->noname = 1;
|
|
565
|
|
566 if (pclcf->locations.elts == NULL) {
|
|
567 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *))
|
104
|
568 == NGX_ERROR)
|
50
|
569 {
|
|
570 return NGX_CONF_ERROR;
|
|
571 }
|
|
572 }
|
|
573
|
|
574 clcfp = ngx_array_push(&pclcf->locations);
|
|
575 if (clcfp == NULL) {
|
|
576 return NGX_CONF_ERROR;
|
|
577 }
|
|
578
|
|
579 *clcfp = clcf;
|
|
580
|
|
581
|
|
582 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) {
|
|
583 return NGX_CONF_ERROR;
|
|
584 }
|
|
585
|
58
|
586 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t));
|
50
|
587 if (if_code == NULL) {
|
|
588 return NULL;
|
|
589 }
|
|
590
|
58
|
591 if_code->code = ngx_http_script_if_code;
|
50
|
592
|
|
593 elts = lcf->codes->elts;
|
|
594
|
|
595
|
180
|
596 /* the inner directives must be compiled to the same code array */
|
50
|
597
|
|
598 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
599 nlcf->codes = lcf->codes;
|
|
600
|
|
601
|
|
602 save = *cf;
|
|
603 cf->ctx = ctx;
|
|
604
|
|
605 if (pclcf->name.len == 0) {
|
|
606 if_code->loc_conf = NULL;
|
|
607 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
608
|
|
609 } else {
|
|
610 if_code->loc_conf = ctx->loc_conf;
|
|
611 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
612 }
|
|
613
|
|
614 rv = ngx_conf_parse(cf, NULL);
|
|
615
|
|
616 *cf = save;
|
|
617
|
|
618 if (rv != NGX_CONF_OK) {
|
|
619 return rv;
|
|
620 }
|
|
621
|
|
622
|
66
|
623 if (lcf->captures < nlcf->captures) {
|
|
624 lcf->captures = nlcf->captures;
|
|
625 }
|
|
626
|
|
627
|
50
|
628 if (elts != lcf->codes->elts) {
|
58
|
629 if_code = (ngx_http_script_if_code_t *)
|
50
|
630 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
631 }
|
|
632
|
|
633 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
634 - (u_char *) if_code;
|
|
635
|
104
|
636 /* the code array belong to parent block */
|
|
637
|
|
638 nlcf->codes = NULL;
|
|
639
|
50
|
640 return NGX_CONF_OK;
|
|
641 }
|
|
642
|
|
643
|
|
644 static char *
|
|
645 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf)
|
|
646 {
|
180
|
647 u_char *p;
|
|
648 size_t len;
|
58
|
649 ngx_str_t *value, err;
|
64
|
650 ngx_uint_t cur, last, n;
|
126
|
651 ngx_http_script_code_pt *code;
|
180
|
652 ngx_http_script_file_code_t *fop;
|
58
|
653 ngx_http_script_regex_code_t *regex;
|
|
654 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
50
|
655
|
|
656 value = cf->args->elts;
|
|
657 last = cf->args->nelts - 1;
|
|
658
|
|
659 if (value[1].len < 1 || value[1].data[0] != '(') {
|
|
660 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
661 "invalid condition \"%V\"", &value[1]);
|
|
662 return NGX_CONF_ERROR;
|
|
663 }
|
|
664
|
|
665 if (value[1].len == 1) {
|
|
666 cur = 2;
|
|
667
|
|
668 } else {
|
|
669 cur = 1;
|
|
670 value[1].len--;
|
|
671 value[1].data++;
|
|
672 }
|
|
673
|
|
674 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') {
|
|
675 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
676 "invalid condition \"%V\"", &value[last]);
|
|
677 return NGX_CONF_ERROR;
|
|
678 }
|
|
679
|
|
680 if (value[last].len == 1) {
|
|
681 last--;
|
|
682
|
|
683 } else {
|
|
684 value[last].len--;
|
|
685 value[last].data[value[last].len] = '\0';
|
|
686 }
|
|
687
|
180
|
688 len = value[cur].len;
|
|
689 p = value[cur].data;
|
|
690
|
|
691 if (len > 1 && p[0] == '$') {
|
50
|
692
|
|
693 if (cur != last && cur + 2 != last) {
|
|
694 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
180
|
695 "invalid condition \"%V\"", &value[cur]);
|
50
|
696 return NGX_CONF_ERROR;
|
|
697 }
|
|
698
|
126
|
699 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) {
|
50
|
700 return NGX_CONF_ERROR;
|
|
701 }
|
|
702
|
|
703 if (cur == last) {
|
|
704 return NGX_CONF_OK;
|
|
705 }
|
|
706
|
|
707 cur++;
|
|
708
|
180
|
709 len = value[cur].len;
|
|
710 p = value[cur].data;
|
|
711
|
|
712 if (len == 1 && p[0] == '=') {
|
126
|
713
|
|
714 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
715 return NGX_CONF_ERROR;
|
|
716 }
|
|
717
|
|
718 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
719 sizeof(uintptr_t));
|
|
720 if (code == NULL) {
|
|
721 return NGX_CONF_ERROR;
|
|
722 }
|
|
723
|
|
724 *code = ngx_http_script_equal_code;
|
|
725
|
|
726 return NGX_CONF_OK;
|
50
|
727 }
|
|
728
|
180
|
729 if (len == 2 && p[0] == '!' && p[1] == '=') {
|
|
730
|
126
|
731 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
732 return NGX_CONF_ERROR;
|
|
733 }
|
|
734
|
|
735 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
736 sizeof(uintptr_t));
|
|
737 if (code == NULL) {
|
|
738 return NGX_CONF_ERROR;
|
|
739 }
|
|
740
|
|
741 *code = ngx_http_script_not_equal_code;
|
|
742 return NGX_CONF_OK;
|
50
|
743 }
|
|
744
|
180
|
745 if ((len == 1 && p[0] == '~')
|
|
746 || (len == 2 && p[0] == '~' && p[1] == '*')
|
|
747 || (len == 2 && p[0] == '!' && p[1] == '~')
|
|
748 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*'))
|
126
|
749 {
|
|
750 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
751 sizeof(ngx_http_script_regex_code_t));
|
|
752 if (regex == NULL) {
|
|
753 return NGX_CONF_ERROR;
|
|
754 }
|
58
|
755
|
126
|
756 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
|
|
757
|
|
758 err.len = NGX_MAX_CONF_ERRSTR;
|
|
759 err.data = errstr;
|
|
760
|
|
761 regex->regex = ngx_regex_compile(&value[last],
|
180
|
762 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0,
|
|
763 cf->pool, &err);
|
50
|
764
|
126
|
765 if (regex->regex == NULL) {
|
|
766 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
767 return NGX_CONF_ERROR;
|
|
768 }
|
|
769
|
|
770 regex->code = ngx_http_script_regex_start_code;
|
|
771 regex->next = sizeof(ngx_http_script_regex_code_t);
|
|
772 regex->test = 1;
|
180
|
773 if (p[0] == '!') {
|
|
774 regex->negative_test = 1;
|
|
775 }
|
126
|
776 regex->name = value[last];
|
50
|
777
|
126
|
778 n = ngx_regex_capture_count(regex->regex);
|
|
779
|
|
780 if (n) {
|
|
781 regex->ncaptures = (n + 1) * 3;
|
|
782
|
|
783 if (lcf->captures < regex->ncaptures) {
|
|
784 lcf->captures = regex->ncaptures;
|
|
785 }
|
|
786 }
|
|
787
|
|
788 return NGX_CONF_OK;
|
50
|
789 }
|
|
790
|
126
|
791 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
792 "unexpected \"%V\" in condition", &value[cur]);
|
|
793 return NGX_CONF_ERROR;
|
180
|
794
|
|
795 } else if ((len == 2 && p[0] == '-')
|
|
796 || (len == 3 && p[0] == '!' && p[1] == '-'))
|
|
797 {
|
|
798 if (cur + 1 != last) {
|
|
799 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
800 "invalid condition \"%V\"", &value[cur]);
|
|
801 return NGX_CONF_ERROR;
|
|
802 }
|
|
803
|
|
804 value[last].data[value[last].len] = '\0';
|
|
805 value[last].len++;
|
|
806
|
|
807 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
808 return NGX_CONF_ERROR;
|
|
809 }
|
|
810
|
|
811 fop = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
812 sizeof(ngx_http_script_file_code_t));
|
|
813 if (fop == NULL) {
|
|
814 return NGX_CONF_ERROR;
|
|
815 }
|
|
816
|
|
817 fop->code = ngx_http_script_file_code;
|
|
818
|
|
819 if (p[1] == 'f') {
|
|
820 fop->op = ngx_http_script_file_plain;
|
|
821 return NGX_CONF_OK;
|
|
822 }
|
|
823
|
218
|
824 if (p[1] == 'd') {
|
|
825 fop->op = ngx_http_script_file_dir;
|
|
826 return NGX_CONF_OK;
|
|
827 }
|
|
828
|
|
829 if (p[1] == 'e') {
|
|
830 fop->op = ngx_http_script_file_exists;
|
|
831 return NGX_CONF_OK;
|
|
832 }
|
|
833
|
|
834 if (p[1] == 'x') {
|
|
835 fop->op = ngx_http_script_file_exec;
|
|
836 return NGX_CONF_OK;
|
|
837 }
|
|
838
|
180
|
839 if (p[0] == '!') {
|
|
840 if (p[2] == 'f') {
|
|
841 fop->op = ngx_http_script_file_not_plain;
|
|
842 return NGX_CONF_OK;
|
|
843 }
|
218
|
844
|
|
845 if (p[2] == 'd') {
|
|
846 fop->op = ngx_http_script_file_not_dir;
|
|
847 return NGX_CONF_OK;
|
|
848 }
|
|
849
|
|
850 if (p[2] == 'e') {
|
|
851 fop->op = ngx_http_script_file_not_exists;
|
|
852 return NGX_CONF_OK;
|
|
853 }
|
|
854
|
|
855 if (p[2] == 'x') {
|
|
856 fop->op = ngx_http_script_file_not_exec;
|
|
857 return NGX_CONF_OK;
|
|
858 }
|
180
|
859 }
|
|
860
|
|
861 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
862 "invalid condition \"%V\"", &value[cur]);
|
|
863 return NGX_CONF_ERROR;
|
50
|
864 }
|
|
865
|
|
866 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
867 "invalid condition \"%V\"", &value[cur]);
|
|
868
|
|
869 return NGX_CONF_ERROR;
|
|
870 }
|
|
871
|
|
872
|
|
873 static char *
|
|
874 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
875 ngx_str_t *value)
|
|
876 {
|
58
|
877 ngx_int_t index;
|
|
878 ngx_http_script_var_code_t *var_code;
|
50
|
879
|
|
880 value->len--;
|
|
881 value->data++;
|
|
882
|
126
|
883 index = ngx_http_get_variable_index(cf, value);
|
50
|
884
|
126
|
885 if (index == NGX_ERROR) {
|
|
886 return NGX_CONF_ERROR;
|
50
|
887 }
|
|
888
|
126
|
889 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
890 sizeof(ngx_http_script_var_code_t));
|
|
891 if (var_code == NULL) {
|
|
892 return NGX_CONF_ERROR;
|
50
|
893 }
|
|
894
|
126
|
895 var_code->code = ngx_http_script_var_code;
|
|
896 var_code->index = index;
|
50
|
897
|
|
898 return NGX_CONF_OK;
|
|
899 }
|
|
900
|
|
901
|
|
902 static char *
|
|
903 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
904 {
|
126
|
905 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
50
|
906
|
186
|
907 ngx_int_t index;
|
|
908 ngx_str_t *value;
|
|
909 ngx_http_variable_t *v;
|
|
910 ngx_http_script_var_code_t *vcode;
|
|
911 ngx_http_script_var_handler_code_t *vhcode;
|
50
|
912
|
|
913 value = cf->args->elts;
|
|
914
|
|
915 if (value[1].data[0] != '$') {
|
|
916 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
917 "invalid variable name \"%V\"", &value[1]);
|
|
918 return NGX_CONF_ERROR;
|
|
919 }
|
|
920
|
|
921 value[1].len--;
|
|
922 value[1].data++;
|
|
923
|
58
|
924 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE);
|
50
|
925 if (v == NULL) {
|
|
926 return NGX_CONF_ERROR;
|
|
927 }
|
|
928
|
58
|
929 index = ngx_http_get_variable_index(cf, &value[1]);
|
|
930 if (index == NGX_ERROR) {
|
|
931 return NGX_CONF_ERROR;
|
|
932 }
|
50
|
933
|
186
|
934 if (v->get_handler == NULL) {
|
|
935 v->get_handler = ngx_http_rewrite_var;
|
104
|
936 v->data = index;
|
|
937 }
|
58
|
938
|
126
|
939 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) {
|
|
940 return NGX_CONF_ERROR;
|
64
|
941 }
|
50
|
942
|
186
|
943 if (v->set_handler) {
|
|
944 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
945 sizeof(ngx_http_script_var_handler_code_t));
|
|
946 if (vhcode == NULL) {
|
|
947 return NGX_CONF_ERROR;
|
|
948 }
|
|
949
|
|
950 vhcode->code = ngx_http_script_var_set_handler_code;
|
|
951 vhcode->handler = v->set_handler;
|
|
952 vhcode->data = v->data;
|
|
953
|
|
954 return NGX_CONF_OK;
|
|
955 }
|
|
956
|
|
957 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
958 sizeof(ngx_http_script_var_code_t));
|
|
959 if (vcode == NULL) {
|
50
|
960 return NGX_CONF_ERROR;
|
|
961 }
|
|
962
|
186
|
963 vcode->code = ngx_http_script_set_var_code;
|
|
964 vcode->index = (uintptr_t) index;
|
50
|
965
|
|
966 return NGX_CONF_OK;
|
|
967 }
|
126
|
968
|
|
969
|
|
970 static char *
|
|
971 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
972 ngx_str_t *value)
|
|
973 {
|
|
974 ngx_int_t n;
|
|
975 ngx_http_script_compile_t sc;
|
|
976 ngx_http_script_value_code_t *val;
|
|
977 ngx_http_script_complex_value_code_t *complex;
|
|
978
|
|
979 n = ngx_http_script_variables_count(value);
|
|
980
|
|
981 if (n == 0) {
|
|
982 val = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
983 sizeof(ngx_http_script_value_code_t));
|
|
984 if (val == NULL) {
|
|
985 return NGX_CONF_ERROR;
|
|
986 }
|
|
987
|
|
988 n = ngx_atoi(value->data, value->len);
|
|
989
|
|
990 if (n == NGX_ERROR) {
|
|
991 n = 0;
|
|
992 }
|
|
993
|
|
994 val->code = ngx_http_script_value_code;
|
|
995 val->value = (uintptr_t) n;
|
|
996 val->text_len = (uintptr_t) value->len;
|
|
997 val->text_data = (uintptr_t) value->data;
|
|
998
|
|
999 return NGX_CONF_OK;
|
|
1000 }
|
|
1001
|
|
1002 complex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
1003 sizeof(ngx_http_script_complex_value_code_t));
|
|
1004 if (complex == NULL) {
|
|
1005 return NGX_CONF_ERROR;
|
|
1006 }
|
|
1007
|
|
1008 complex->code = ngx_http_script_complex_value_code;
|
|
1009 complex->lengths = NULL;
|
|
1010
|
|
1011 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
1012
|
|
1013 sc.cf = cf;
|
|
1014 sc.source = value;
|
|
1015 sc.lengths = &complex->lengths;
|
|
1016 sc.values = &lcf->codes;
|
|
1017 sc.variables = n;
|
|
1018 sc.complete_lengths = 1;
|
|
1019
|
|
1020 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
1021 return NGX_CONF_ERROR;
|
|
1022 }
|
|
1023
|
|
1024 return NGX_CONF_OK;
|
|
1025 }
|