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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 ngx_http_rewrite_engine_s ngx_http_rewrite_engine_t;
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13
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14 typedef void (*ngx_http_rewrite_code_pt) (ngx_http_rewrite_engine_t *e);
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15
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16
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17 typedef struct {
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18 ngx_str_t name;
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19 ngx_uint_t wildcard;
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20 } ngx_http_rewrite_referer_t;
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21
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22
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23 typedef struct {
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24 ngx_str_t *name;
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25 ngx_http_variable_value_t *value;
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26 } ngx_http_rewrite_variable_t;
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27
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28
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29 typedef struct {
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30 ngx_array_t *codes; /* uintptr_t */
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31 ngx_array_t *referers; /* ngx_http_rewrite_referer_t */
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32
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33 ngx_uint_t max_captures;
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34 ngx_uint_t stack_size;
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35
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36 ngx_flag_t log;
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37
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38 ngx_flag_t no_referer;
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54
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39 ngx_flag_t blocked_referer;
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50
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40 } ngx_http_rewrite_loc_conf_t;
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41
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42
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43 typedef struct {
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44 ngx_http_rewrite_code_pt code;
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45 ngx_regex_t *regex;
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46 uintptr_t size;
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47 uintptr_t ncaptures;
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48 uintptr_t status;
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49 uintptr_t next;
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50
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51 uintptr_t test:1;
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52 uintptr_t uri:1;
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53
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54 /* add the r->args to the new arguments */
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55 uintptr_t args:1;
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56
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57 uintptr_t redirect:1;
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58 uintptr_t break_cycle:1;
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59
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60 ngx_str_t name;
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61 } ngx_http_rewrite_regex_code_t;
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62
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63
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64 typedef struct {
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65 ngx_http_rewrite_code_pt code;
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66
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67 uintptr_t uri:1;
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68
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69 /* add the r->args to the new arguments */
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70 uintptr_t args:1;
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71
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72 uintptr_t redirect:1;
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73 } ngx_http_rewrite_regex_end_code_t;
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74
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75 typedef struct {
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76 ngx_http_rewrite_code_pt code;
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77 uintptr_t n;
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78 } ngx_http_rewrite_copy_capture_code_t;
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79
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80
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81 typedef struct {
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82 ngx_http_rewrite_code_pt code;
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83 uintptr_t len;
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84 } ngx_http_rewrite_copy_code_t;
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85
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86
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87 typedef struct {
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88 ngx_http_rewrite_code_pt code;
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89 uintptr_t status;
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90 uintptr_t null;
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91 } ngx_http_rewrite_return_code_t;
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92
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93
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94 typedef struct {
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95 ngx_http_rewrite_code_pt code;
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96 uintptr_t next;
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97 void **loc_conf;
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98 } ngx_http_rewrite_if_code_t;
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99
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100
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101 typedef struct {
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102 ngx_http_rewrite_code_pt code;
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103 uintptr_t value;
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104 uintptr_t text_len;
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105 uintptr_t text_data;
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106 } ngx_http_rewrite_value_code_t;
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107
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108
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109 typedef struct {
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110 ngx_http_rewrite_code_pt code;
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111 uintptr_t index;
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112 } ngx_http_rewrite_var_code_t;
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113
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114
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115 struct ngx_http_rewrite_engine_s {
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116 u_char *ip;
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117 ngx_http_variable_value_t *sp;
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118
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119 ngx_str_t buf;
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120 ngx_str_t *line;
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121
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122 u_char *pos;
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123
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124 /* the start of the rewritten arguments */
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125 u_char *args;
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126
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127 unsigned quote:1;
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128
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129 ngx_int_t status;
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130
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131 int *captures;
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132
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133 ngx_http_request_t *request;
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134 ngx_http_rewrite_loc_conf_t *conf;
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135 };
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136
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137
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138 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle);
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139 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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140 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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141 void *parent, void *child);
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142 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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143 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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144 void *conf);
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145 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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146 void *conf);
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147 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf,
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148 ngx_http_rewrite_loc_conf_t *lcf);
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149 static char *ngx_http_rewrite_variable(ngx_conf_t *cf,
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150 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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151 static char *ngx_http_rewrite_valid_referers(ngx_conf_t *cf,
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152 ngx_command_t *cmd, void *conf);
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153 static char * ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd,
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154 void *conf);
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155 static void *ngx_http_rewrite_start_code(ngx_pool_t *pool,
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156 ngx_array_t **codes, size_t size);
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157 static void *ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size,
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158 void *code);
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159
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160
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161 static ngx_command_t ngx_http_rewrite_commands[] = {
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162
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163 { ngx_string("rewrite"),
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164 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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165 |NGX_CONF_TAKE23,
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166 ngx_http_rewrite,
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167 NGX_HTTP_LOC_CONF_OFFSET,
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168 0,
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169 NULL },
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170
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171 { ngx_string("return"),
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172 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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173 |NGX_CONF_TAKE1,
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174 ngx_http_rewrite_return,
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175 NGX_HTTP_LOC_CONF_OFFSET,
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176 0,
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177 NULL },
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178
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179 { ngx_string("if"),
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180 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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181 ngx_http_rewrite_if,
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182 NGX_HTTP_LOC_CONF_OFFSET,
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183 0,
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184 NULL },
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185
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186 { ngx_string("valid_referers"),
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187 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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188 ngx_http_rewrite_valid_referers,
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189 NGX_HTTP_LOC_CONF_OFFSET,
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190 0,
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191 NULL },
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192
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193 { ngx_string("set"),
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194 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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195 |NGX_CONF_TAKE2,
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196 ngx_http_rewrite_set,
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197 NGX_HTTP_LOC_CONF_OFFSET,
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198 0,
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199 NULL },
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200
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201 { ngx_string("rewrite_log"),
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202 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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203 |NGX_CONF_TAKE1,
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204 ngx_conf_set_flag_slot,
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205 NGX_HTTP_LOC_CONF_OFFSET,
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206 offsetof(ngx_http_rewrite_loc_conf_t, log),
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207 NULL },
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208
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209 ngx_null_command
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210 };
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211
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212
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213 ngx_http_module_t ngx_http_rewrite_module_ctx = {
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214 NULL, /* pre conf */
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215
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216 NULL, /* create main configuration */
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217 NULL, /* init main configuration */
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218
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219 NULL, /* create server configuration */
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220 NULL, /* merge server configuration */
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221
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222 ngx_http_rewrite_create_loc_conf, /* create location configration */
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223 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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224 };
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225
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226
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227 ngx_module_t ngx_http_rewrite_module = {
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228 NGX_MODULE,
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229 &ngx_http_rewrite_module_ctx, /* module context */
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230 ngx_http_rewrite_commands, /* module directives */
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231 NGX_HTTP_MODULE, /* module type */
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232 ngx_http_rewrite_init, /* init module */
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233 NULL /* init process */
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234 };
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235
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236
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237 #define ngx_http_rewrite_exit (u_char *) &ngx_http_rewrite_exit_code
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238
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239 uintptr_t ngx_http_rewrite_exit_code = (uintptr_t) NULL;
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240
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241 static ngx_http_variable_value_t ngx_http_rewrite_null_value =
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242 { 0, ngx_string("") };
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243
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244
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245 static ngx_int_t
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246 ngx_http_rewrite_handler(ngx_http_request_t *r)
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247 {
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248 ngx_http_rewrite_code_pt code;
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249 ngx_http_rewrite_engine_t *e;
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250 ngx_http_rewrite_loc_conf_t *cf;
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251
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252 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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253
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254 if (cf->codes == NULL) {
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255 return NGX_DECLINED;
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256 }
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257
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258 e = ngx_palloc(r->pool, sizeof(ngx_http_rewrite_engine_t));
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259 if (e == NULL) {
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260 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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261 }
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262
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263 e->sp = ngx_palloc(r->pool,
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264 cf->stack_size * sizeof(ngx_http_variable_value_t));
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265 if (e->sp == NULL) {
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266 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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267 }
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268
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269 if (cf->max_captures) {
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270 e->captures = ngx_palloc(r->pool, cf->max_captures * sizeof(int));
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271 if (e->captures == NULL) {
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272 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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273 }
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274
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275 } else {
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276 e->captures = NULL;
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277 }
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278
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279 e->ip = cf->codes->elts;
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280 e->buf.len = 0;
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281 e->buf.data = NULL;
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282 e->line = NULL;
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283 e->pos = NULL;
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284 e->args = NULL;
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285 e->quote = 1;
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286 e->status = NGX_DECLINED;
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287 e->request = r;
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288 e->conf = cf;
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289
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290 while (*(uintptr_t *) e->ip) {
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291 code = *(ngx_http_rewrite_code_pt *) e->ip;
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292 code(e);
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293 }
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294
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295 return e->status;
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296 }
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297
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298
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299 static void
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300 ngx_http_rewrite_regex_start_code(ngx_http_rewrite_engine_t *e)
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301 {
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302 ngx_int_t rc;
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303 ngx_uint_t n;
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304 ngx_http_request_t *r;
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305 ngx_http_rewrite_regex_code_t *code;
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306
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307 code = (ngx_http_rewrite_regex_code_t *) e->ip;
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308
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309 r = e->request;
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310
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311 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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312 "http rewrite regex: \"%V\"", &code->name);
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313
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314 if (code->uri) {
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315 e->line = &r->uri;
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316 } else {
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317 e->sp--;
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318 e->line = &e->sp->text;
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319 }
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320
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321 rc = ngx_regex_exec(code->regex, e->line, e->captures, code->ncaptures);
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322
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323 if (rc == NGX_REGEX_NO_MATCHED) {
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324 if (e->conf->log) {
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325 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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326 "\"%V\" does not match \"%V\"", &code->name, e->line);
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327 }
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328
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329 if (code->test) {
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330 e->sp->value = 0;
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331 e->sp->text.len = 0;
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332 e->sp->text.data = (u_char *) "";
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333 e->sp++;
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334
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335 e->ip += sizeof(ngx_http_rewrite_regex_code_t);
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336 return;
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337 }
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338
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339 e->ip += code->next;
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340 return;
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341 }
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342
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343 if (rc < 0) {
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344 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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345 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
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346 rc, e->line, &code->name);
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347
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348 e->ip = ngx_http_rewrite_exit;
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349 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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350 return;
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351 }
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352
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353 if (e->conf->log) {
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354 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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355 "\"%V\" matches \"%V\"", &code->name, e->line);
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356 }
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357
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358 if (code->test) {
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359 e->sp->value = 1;
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360 e->sp->text.len = 1;
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361 e->sp->text.data = (u_char *) "1";
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362 e->sp++;
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363
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364 e->ip += sizeof(ngx_http_rewrite_regex_code_t);
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365 return;
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366 }
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367
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368 if (code->status) {
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369 e->status = code->status;
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370
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371 if (!code->redirect) {
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372 e->ip = ngx_http_rewrite_exit;
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373 return;
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374 }
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375 }
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376
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377 e->buf.len = code->size;
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378
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379 if (code->uri) {
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380 if (!code->break_cycle) {
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381 r->uri_changed = 1;
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54
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382 r->valid_unparsed_uri = 1;
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50
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383 }
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384
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385 if (rc && (r->quoted_uri || r->plus_in_uri)) {
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386 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
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387 NGX_ESCAPE_ARGS);
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388 }
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389 }
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390
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391 for (n = 1; n < (ngx_uint_t) rc; n++) {
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392 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n];
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393 }
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394
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395 if (code->args && r->args.len) {
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396 e->buf.len += r->args.len + 1;
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397 }
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398
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399 e->buf.data = ngx_palloc(r->pool, e->buf.len);
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400 if (e->buf.data == NULL) {
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401 e->ip = ngx_http_rewrite_exit;
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402 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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403 return;
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404 }
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405
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406 e->quote = code->redirect;
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407
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|
|
408 e->pos = e->buf.data;
|
|
|
409
|
|
|
410 e->ip += sizeof(ngx_http_rewrite_regex_code_t);
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static void
|
|
|
415 ngx_http_rewrite_regex_end_code(ngx_http_rewrite_engine_t *e)
|
|
|
416 {
|
|
|
417 ngx_http_request_t *r;
|
|
|
418 ngx_http_rewrite_regex_end_code_t *code;
|
|
|
419
|
|
|
420 code = (ngx_http_rewrite_regex_end_code_t *) e->ip;
|
|
|
421
|
|
|
422 r = e->request;
|
|
|
423
|
|
|
424 e->quote = 0;
|
|
|
425
|
|
|
426 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
427 "http rewrite regex end");
|
|
|
428
|
|
|
429 if (e->args) {
|
|
|
430 e->buf.len = e->args - e->buf.data;
|
|
|
431
|
|
|
432 if (code->args && r->args.len) {
|
|
|
433 *e->pos++ = '&';
|
|
|
434 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
|
|
|
435 }
|
|
|
436
|
|
|
437 r->args.len = e->pos - e->args;
|
|
|
438 r->args.data = e->args;
|
|
|
439
|
|
|
440 e->args = NULL;
|
|
|
441
|
|
|
442 } else {
|
|
|
443 if (code->args && r->args.len) {
|
|
|
444 *e->pos++ = '?';
|
|
|
445 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
|
|
|
446 }
|
|
|
447
|
|
|
448 e->buf.len = e->pos - e->buf.data;
|
|
|
449 }
|
|
|
450
|
|
|
451 if (!code->redirect) {
|
|
|
452 if (e->conf->log) {
|
|
|
453 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
|
|
|
454 "rewritten data: \"%V\", args: \"%V\"",
|
|
|
455 &e->buf, &r->args);
|
|
|
456 }
|
|
|
457
|
|
|
458 if (code->uri) {
|
|
|
459 r->uri = e->buf;
|
|
|
460
|
|
|
461 if (ngx_http_set_exten(r) != NGX_OK) {
|
|
|
462 e->ip = ngx_http_rewrite_exit;
|
|
|
463 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
464 return;
|
|
|
465 }
|
|
|
466 }
|
|
|
467
|
|
|
468 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
469 return;
|
|
|
470 }
|
|
|
471
|
|
|
472 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
|
|
|
473 "rewritten redirect: \"%V\"", &e->buf);
|
|
|
474
|
|
|
475 r->headers_out.location = ngx_list_push(&r->headers_out.headers);
|
|
|
476 if (r->headers_out.location == NULL) {
|
|
|
477 e->ip = ngx_http_rewrite_exit;
|
|
|
478 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
479 return;
|
|
|
480 }
|
|
|
481
|
|
|
482 if (e->buf.data[0] != '/') {
|
|
|
483 r->headers_out.location->key.len = sizeof("Location") - 1;
|
|
|
484 r->headers_out.location->key.data = (u_char *) "Location";
|
|
|
485 }
|
|
|
486
|
|
|
487 r->headers_out.location->value = e->buf;
|
|
|
488
|
|
|
489 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
490 }
|
|
|
491
|
|
|
492
|
|
|
493 static void
|
|
|
494 ngx_http_rewrite_copy_capture_code(ngx_http_rewrite_engine_t *e)
|
|
|
495 {
|
|
|
496 ngx_http_rewrite_copy_capture_code_t *code;
|
|
|
497
|
|
|
498 code = (ngx_http_rewrite_copy_capture_code_t *) e->ip;
|
|
|
499
|
|
|
500 e->ip += sizeof(ngx_http_rewrite_copy_capture_code_t);
|
|
|
501
|
|
|
502 if ((e->args || e->quote)
|
|
|
503 && (e->request->quoted_uri || e->request->plus_in_uri))
|
|
|
504 {
|
|
|
505 e->pos = (u_char *) ngx_escape_uri(e->pos,
|
|
|
506 &e->line->data[e->captures[code->n]],
|
|
|
507 e->captures[code->n + 1] - e->captures[code->n],
|
|
|
508 NGX_ESCAPE_ARGS);
|
|
|
509 } else {
|
|
|
510 e->pos = ngx_cpymem(e->pos, &e->line->data[e->captures[code->n]],
|
|
|
511 e->captures[code->n + 1] - e->captures[code->n]);
|
|
|
512 }
|
|
|
513
|
|
|
514 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
515 "http rewrite capture: \"%V\"", &e->buf);
|
|
|
516 }
|
|
|
517
|
|
|
518
|
|
|
519 static void
|
|
|
520 ngx_http_rewrite_copy_code(ngx_http_rewrite_engine_t *e)
|
|
|
521 {
|
|
|
522 ngx_http_rewrite_copy_code_t *code;
|
|
|
523
|
|
|
524 code = (ngx_http_rewrite_copy_code_t *) e->ip;
|
|
|
525
|
|
|
526 e->pos = ngx_cpymem(e->pos, e->ip + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
527 code->len);
|
|
|
528
|
|
|
529 e->ip += sizeof(ngx_http_rewrite_copy_code_t)
|
|
|
530 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
|
|
|
531
|
|
|
532 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
533 "http rewrite copy: \"%V\"", &e->buf);
|
|
|
534 }
|
|
|
535
|
|
|
536
|
|
|
537 static void
|
|
|
538 ngx_http_rewrite_start_args_code(ngx_http_rewrite_engine_t *e)
|
|
|
539 {
|
|
|
540 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
541 "http rewrite args");
|
|
|
542
|
|
|
543 e->args = e->pos;
|
|
|
544 e->ip += sizeof(uintptr_t);
|
|
|
545 }
|
|
|
546
|
|
|
547
|
|
|
548 static void
|
|
|
549 ngx_http_rewrite_return_code(ngx_http_rewrite_engine_t *e)
|
|
|
550 {
|
|
|
551 ngx_http_rewrite_return_code_t *code;
|
|
|
552
|
|
|
553 code = (ngx_http_rewrite_return_code_t *) e->ip;
|
|
|
554
|
|
|
555 e->status = code->status;
|
|
|
556
|
|
|
557 e->ip += sizeof(ngx_http_rewrite_return_code_t) - sizeof(uintptr_t);
|
|
|
558 }
|
|
|
559
|
|
|
560
|
|
|
561 static void
|
|
|
562 ngx_http_rewrite_if_code(ngx_http_rewrite_engine_t *e)
|
|
|
563 {
|
|
|
564 ngx_http_rewrite_if_code_t *code;
|
|
|
565
|
|
|
566 code = (ngx_http_rewrite_if_code_t *) e->ip;
|
|
|
567
|
|
|
568 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
569 "http rewrite if");
|
|
|
570
|
|
|
571 e->sp--;
|
|
|
572
|
|
|
573 if (e->sp->value) {
|
|
|
574 if (code->loc_conf) {
|
|
|
575 e->request->loc_conf = code->loc_conf;
|
|
|
576 }
|
|
|
577
|
|
|
578 e->ip += sizeof(ngx_http_rewrite_if_code_t);
|
|
|
579 return;
|
|
|
580 }
|
|
|
581
|
|
|
582 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
583 "http rewrite if false");
|
|
|
584
|
|
|
585 e->ip += code->next;
|
|
|
586 }
|
|
|
587
|
|
|
588
|
|
|
589 static void
|
|
|
590 ngx_http_rewrite_value_code(ngx_http_rewrite_engine_t *e)
|
|
|
591 {
|
|
|
592 ngx_http_rewrite_value_code_t *code;
|
|
|
593
|
|
|
594 code = (ngx_http_rewrite_value_code_t *) e->ip;
|
|
|
595
|
|
|
596 e->ip += sizeof(ngx_http_rewrite_value_code_t);
|
|
|
597
|
|
|
598 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
599 "http rewrite value");
|
|
|
600
|
|
|
601 e->sp->value = (ngx_uint_t) code->value;
|
|
|
602 e->sp->text.len = (size_t) code->text_len;
|
|
|
603 e->sp->text.data = (u_char *) code->text_data;
|
|
|
604 e->sp++;
|
|
|
605 }
|
|
|
606
|
|
|
607
|
|
|
608 static void
|
|
|
609 ngx_http_rewrite_set_var_code(ngx_http_rewrite_engine_t *e)
|
|
|
610 {
|
|
|
611 ngx_http_request_t *r;
|
|
|
612 ngx_http_variable_value_t *value;
|
|
|
613 ngx_http_core_main_conf_t *cmcf;
|
|
|
614 ngx_http_rewrite_var_code_t *code;
|
|
|
615
|
|
|
616 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
617 "http rewrite set var");
|
|
|
618
|
|
|
619 code = (ngx_http_rewrite_var_code_t *) e->ip;
|
|
|
620
|
|
|
621 e->ip += sizeof(ngx_http_rewrite_var_code_t);
|
|
|
622
|
|
|
623 r = e->request;
|
|
|
624
|
|
|
625 if (r->variables == NULL) {
|
|
|
626 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
627
|
|
|
628 r->variables = ngx_pcalloc(r->pool, cmcf->variables.nelts
|
|
|
629 * sizeof(ngx_http_variable_value_t *));
|
|
|
630 if (r->variables == NULL) {
|
|
|
631 e->ip = ngx_http_rewrite_exit;
|
|
|
632 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
633 return;
|
|
|
634 }
|
|
|
635 }
|
|
|
636
|
|
|
637 value = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
638 if (value == NULL) {
|
|
|
639 e->ip = ngx_http_rewrite_exit;
|
|
|
640 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
641 return;
|
|
|
642 }
|
|
|
643
|
|
|
644 e->sp--;
|
|
|
645
|
|
|
646 *value = *e->sp;
|
|
|
647
|
|
|
648 r->variables[code->index] = value;
|
|
|
649 }
|
|
|
650
|
|
|
651
|
|
|
652 static void
|
|
|
653 ngx_http_rewrite_var_code(ngx_http_rewrite_engine_t *e)
|
|
|
654 {
|
|
|
655 ngx_http_variable_value_t *value;
|
|
|
656 ngx_http_rewrite_var_code_t *code;
|
|
|
657
|
|
|
658 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
659 "http rewrite var");
|
|
|
660
|
|
|
661 code = (ngx_http_rewrite_var_code_t *) e->ip;
|
|
|
662
|
|
|
663 e->ip += sizeof(ngx_http_rewrite_var_code_t);
|
|
|
664
|
|
|
665 value = ngx_http_get_indexed_variable(e->request, code->index);
|
|
|
666
|
|
|
667 if (value == NULL || value == NGX_HTTP_VARIABLE_NOT_FOUND) {
|
|
|
668 e->sp->value = 0;
|
|
|
669 e->sp->text.len = 0;
|
|
|
670 e->sp->text.data = (u_char *) "";
|
|
|
671 e->sp++;
|
|
|
672
|
|
|
673 return;
|
|
|
674 }
|
|
|
675
|
|
|
676 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
677 "http rewrite var: %ui, \"%V\"", value->value, &value->text);
|
|
|
678
|
|
|
679 *e->sp = *value;
|
|
|
680 e->sp++;
|
|
|
681 }
|
|
|
682
|
|
|
683
|
|
|
684 static void
|
|
|
685 ngx_http_rewrite_invalid_referer_code(ngx_http_rewrite_engine_t *e)
|
|
|
686 {
|
|
|
687 u_char *ref;
|
|
|
688 size_t len;
|
|
|
689 ngx_uint_t i, n;
|
|
|
690 ngx_http_request_t *r;
|
|
|
691 ngx_http_rewrite_referer_t *refs;
|
|
|
692 ngx_http_rewrite_loc_conf_t *cf;
|
|
|
693
|
|
|
694 r = e->request;
|
|
|
695
|
|
|
696 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
697 "http rewrite invalid referer");
|
|
|
698
|
|
|
699 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
|
|
|
700
|
|
|
701 e->ip += sizeof(uintptr_t);
|
|
|
702
|
|
|
703 if (cf->referers == NULL) {
|
|
|
704 e->sp->value = 0;
|
|
|
705 e->sp->text.len = 0;
|
|
|
706 e->sp->text.data = (u_char *) "";
|
|
|
707 e->sp++;
|
|
|
708
|
|
|
709 return;
|
|
|
710 }
|
|
|
711
|
|
|
712 if (r->headers_in.referer == NULL) {
|
|
|
713 if (cf->no_referer) {
|
|
|
714 e->sp->value = 0;
|
|
|
715 e->sp->text.len = 0;
|
|
|
716 e->sp->text.data = (u_char *) "";
|
|
|
717 e->sp++;
|
|
|
718
|
|
|
719 return;
|
|
54
|
720
|
|
50
|
721 } else {
|
|
|
722 e->sp->value = 1;
|
|
|
723 e->sp->text.len = 1;
|
|
|
724 e->sp->text.data = (u_char *) "1";
|
|
|
725 e->sp++;
|
|
|
726
|
|
|
727 return;
|
|
|
728 }
|
|
|
729 }
|
|
|
730
|
|
|
731 len = r->headers_in.referer->value.len;
|
|
|
732 ref = r->headers_in.referer->value.data;
|
|
|
733
|
|
|
734 if (len < sizeof("http://i.ru") - 1
|
|
|
735 || (ngx_strncasecmp(ref, "http://", 7) != 0))
|
|
|
736 {
|
|
54
|
737 if (cf->blocked_referer) {
|
|
|
738 e->sp->value = 0;
|
|
|
739 e->sp->text.len = 0;
|
|
|
740 e->sp->text.data = (u_char *) "0";
|
|
|
741 e->sp++;
|
|
|
742
|
|
|
743 return;
|
|
50
|
744
|
|
54
|
745 } else {
|
|
|
746 e->sp->value = 1;
|
|
|
747 e->sp->text.len = 1;
|
|
|
748 e->sp->text.data = (u_char *) "1";
|
|
|
749 e->sp++;
|
|
|
750
|
|
|
751 return;
|
|
|
752 }
|
|
50
|
753 }
|
|
|
754
|
|
|
755 len -= 7;
|
|
|
756 ref += 7;
|
|
|
757
|
|
|
758 refs = cf->referers->elts;
|
|
|
759 for (i = 0; i < cf->referers->nelts; i++ ){
|
|
|
760
|
|
|
761 if (refs[i].name.len > len) {
|
|
|
762 continue;
|
|
|
763 }
|
|
|
764
|
|
|
765 if (refs[i].wildcard) {
|
|
|
766 for (n = 0; n < len; n++) {
|
|
|
767 if (ref[n] == '/' || ref[n] == ':') {
|
|
|
768 break;
|
|
|
769 }
|
|
|
770
|
|
|
771 if (ref[n] != '.') {
|
|
|
772 continue;
|
|
|
773 }
|
|
|
774
|
|
|
775 if (ngx_strncmp(&ref[n], refs[i].name.data,
|
|
|
776 refs[i].name.len) == 0)
|
|
|
777 {
|
|
|
778 e->sp->value = 0;
|
|
|
779 e->sp->text.len = 0;
|
|
|
780 e->sp->text.data = (u_char *) "";
|
|
|
781 e->sp++;
|
|
|
782
|
|
|
783 return;
|
|
|
784 }
|
|
|
785 }
|
|
|
786
|
|
|
787 } else {
|
|
|
788 if (ngx_strncasecmp(refs[i].name.data, ref, refs[i].name.len) == 0)
|
|
|
789 {
|
|
|
790 e->sp->value = 0;
|
|
|
791 e->sp->text.len = 0;
|
|
|
792 e->sp->text.data = (u_char *) "";
|
|
|
793 e->sp++;
|
|
|
794
|
|
|
795 return;
|
|
|
796 }
|
|
|
797 }
|
|
|
798 }
|
|
|
799
|
|
|
800 e->sp->value = 1;
|
|
|
801 e->sp->text.len = 1;
|
|
|
802 e->sp->text.data = (u_char *) "1";
|
|
|
803 e->sp++;
|
|
|
804 }
|
|
|
805
|
|
|
806
|
|
|
807 static void
|
|
|
808 ngx_http_rewrite_nop_code(ngx_http_rewrite_engine_t *e)
|
|
|
809 {
|
|
|
810 e->ip += sizeof(uintptr_t);
|
|
|
811 }
|
|
|
812
|
|
|
813
|
|
|
814 static ngx_http_variable_value_t *
|
|
|
815 ngx_http_rewrite_var(ngx_http_request_t *r, uintptr_t data)
|
|
|
816 {
|
|
|
817 ngx_http_variable_t *var;
|
|
|
818 ngx_http_core_main_conf_t *cmcf;
|
|
|
819
|
|
|
820 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
821
|
|
|
822 var = cmcf->variables.elts;
|
|
|
823
|
|
|
824 /*
|
|
|
825 * the ngx_http_rewrite_module sets variables directly in r->variables,
|
|
|
826 * and they should be handle by ngx_http_get_indexed_variable(),
|
|
|
827 * so the handler is called only if the variable is not initialized
|
|
|
828 */
|
|
|
829
|
|
|
830 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
831 "using uninitialized \"%V\" variable", &var[data].name);
|
|
|
832
|
|
|
833 return &ngx_http_rewrite_null_value;
|
|
|
834 }
|
|
|
835
|
|
|
836
|
|
|
837 static ngx_int_t
|
|
|
838 ngx_http_rewrite_init(ngx_cycle_t *cycle)
|
|
|
839 {
|
|
|
840 ngx_http_handler_pt *h;
|
|
|
841 ngx_http_core_main_conf_t *cmcf;
|
|
|
842
|
|
|
843 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
|
|
|
844
|
|
|
845 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
|
|
|
846 if (h == NULL) {
|
|
|
847 return NGX_ERROR;
|
|
|
848 }
|
|
|
849
|
|
|
850 *h = ngx_http_rewrite_handler;
|
|
|
851
|
|
|
852 return NGX_OK;
|
|
|
853 }
|
|
|
854
|
|
|
855
|
|
|
856 static void *
|
|
|
857 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
|
|
|
858 {
|
|
|
859 ngx_http_rewrite_loc_conf_t *conf;
|
|
|
860
|
|
|
861 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t));
|
|
|
862 if (conf == NULL) {
|
|
|
863 return NGX_CONF_ERROR;
|
|
|
864 }
|
|
|
865
|
|
|
866 conf->stack_size = NGX_CONF_UNSET_UINT;
|
|
|
867 conf->log = NGX_CONF_UNSET;
|
|
|
868 conf->no_referer = NGX_CONF_UNSET;
|
|
54
|
869 conf->blocked_referer = NGX_CONF_UNSET;
|
|
50
|
870
|
|
|
871 return conf;
|
|
|
872 }
|
|
|
873
|
|
|
874
|
|
|
875 static char *
|
|
|
876 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
877 {
|
|
|
878 ngx_http_rewrite_loc_conf_t *prev = parent;
|
|
|
879 ngx_http_rewrite_loc_conf_t *conf = child;
|
|
|
880
|
|
|
881 uintptr_t *code, *last;
|
|
|
882 ngx_http_rewrite_regex_code_t *regex;
|
|
|
883
|
|
|
884 ngx_conf_merge_value(conf->log, prev->log, 0);
|
|
|
885 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10);
|
|
|
886
|
|
|
887 if (conf->referers == NULL) {
|
|
|
888 conf->referers = prev->referers;
|
|
|
889 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0);
|
|
54
|
890 ngx_conf_merge_value(conf->blocked_referer, prev->blocked_referer, 0);
|
|
50
|
891 }
|
|
|
892
|
|
|
893 if (conf->no_referer == NGX_CONF_UNSET) {
|
|
|
894 conf->no_referer = 0;
|
|
|
895 }
|
|
|
896
|
|
54
|
897 if (conf->blocked_referer == NGX_CONF_UNSET) {
|
|
|
898 conf->blocked_referer = 0;
|
|
|
899 }
|
|
|
900
|
|
50
|
901 if (conf->codes == NULL) {
|
|
|
902 return NGX_CONF_OK;
|
|
|
903 }
|
|
|
904
|
|
|
905 if (conf->codes == prev->codes) {
|
|
|
906 return NGX_CONF_OK;
|
|
|
907 }
|
|
|
908
|
|
|
909 code = conf->codes->elts;
|
|
|
910 last = (uintptr_t *) ((u_char *) code + conf->codes->nelts);
|
|
|
911
|
|
|
912 while (code < last) {
|
|
|
913 if (*code == (uintptr_t) NULL) {
|
|
|
914 return NGX_CONF_OK;
|
|
|
915 }
|
|
|
916
|
|
|
917 if (*code == (uintptr_t) &ngx_http_rewrite_regex_start_code) {
|
|
|
918 regex = (ngx_http_rewrite_regex_code_t *) code;
|
|
|
919 if (conf->max_captures < regex->ncaptures) {
|
|
|
920 conf->max_captures = regex->ncaptures;
|
|
|
921 }
|
|
|
922 code = (uintptr_t *) ((u_char *) code + regex->next);
|
|
|
923 continue;
|
|
|
924 }
|
|
|
925
|
|
|
926 if (*code == (uintptr_t) &ngx_http_rewrite_if_code) {
|
|
|
927 code += sizeof(ngx_http_rewrite_if_code_t) / sizeof(uintptr_t);
|
|
|
928 continue;
|
|
|
929 }
|
|
|
930
|
|
|
931 if (*code == (uintptr_t) &ngx_http_rewrite_return_code) {
|
|
|
932 code += sizeof(ngx_http_rewrite_return_code_t) / sizeof(uintptr_t);
|
|
|
933 continue;
|
|
|
934 }
|
|
|
935
|
|
|
936 if (*code == (uintptr_t) &ngx_http_rewrite_set_var_code) {
|
|
|
937 code += sizeof(ngx_http_rewrite_var_code_t) / sizeof(uintptr_t);
|
|
|
938 continue;
|
|
|
939 }
|
|
|
940
|
|
|
941 if (*code == (uintptr_t) &ngx_http_rewrite_var_code) {
|
|
|
942 code += sizeof(ngx_http_rewrite_var_code_t) / sizeof(uintptr_t);
|
|
|
943 continue;
|
|
|
944 }
|
|
|
945
|
|
|
946 if (*code == (uintptr_t) &ngx_http_rewrite_value_code) {
|
|
|
947 code += sizeof(ngx_http_rewrite_value_code_t) / sizeof(uintptr_t);
|
|
|
948 continue;
|
|
|
949 }
|
|
|
950
|
|
|
951 if (*code == (uintptr_t) &ngx_http_rewrite_invalid_referer_code) {
|
|
|
952 code++;
|
|
|
953 continue;
|
|
|
954 }
|
|
|
955
|
|
|
956 if (*code == (uintptr_t) &ngx_http_rewrite_nop_code) {
|
|
|
957 code++;
|
|
|
958 continue;
|
|
|
959 }
|
|
|
960
|
|
|
961 #if (NGX_DEBUG)
|
|
|
962 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
963 "unknown rewrite code: %p", *code);
|
|
|
964 return NGX_CONF_ERROR;
|
|
|
965 #endif
|
|
|
966 }
|
|
|
967
|
|
|
968 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t));
|
|
|
969 if (code == NULL) {
|
|
|
970 return NGX_CONF_ERROR;
|
|
|
971 }
|
|
|
972
|
|
|
973 *code = (uintptr_t) NULL;
|
|
|
974
|
|
|
975 return NGX_CONF_OK;
|
|
|
976 }
|
|
|
977
|
|
|
978
|
|
|
979 static char *
|
|
|
980 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
981 {
|
|
|
982 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
983
|
|
|
984 u_char *data;
|
|
|
985 size_t len, size;
|
|
|
986 ngx_str_t *value, err;
|
|
|
987 ngx_int_t n;
|
|
|
988 ngx_uint_t i, last;
|
|
|
989 ngx_http_rewrite_code_pt *code;
|
|
|
990 ngx_http_rewrite_copy_code_t *copy;
|
|
|
991 ngx_http_rewrite_regex_code_t *regex;
|
|
|
992 ngx_http_rewrite_regex_end_code_t *regex_end;
|
|
|
993 ngx_http_rewrite_copy_capture_code_t *copy_capture;
|
|
|
994 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
|
995
|
|
|
996 regex = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
997 sizeof(ngx_http_rewrite_regex_code_t));
|
|
|
998 if (regex == NULL) {
|
|
|
999 return NGX_CONF_ERROR;
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 value = cf->args->elts;
|
|
|
1003
|
|
|
1004 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
1005 err.data = errstr;
|
|
|
1006
|
|
|
1007 /* TODO: NGX_REGEX_CASELESS */
|
|
|
1008
|
|
|
1009 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
|
|
|
1010
|
|
|
1011 if (regex->regex == NULL) {
|
|
|
1012 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
1013 return NGX_CONF_ERROR;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 regex->code = ngx_http_rewrite_regex_start_code;
|
|
|
1017 regex->size = 0;
|
|
|
1018 regex->ncaptures = 0;
|
|
|
1019 regex->status = 0;
|
|
|
1020 regex->test = 0;
|
|
|
1021 regex->uri = 1;
|
|
|
1022 regex->args = 1;
|
|
|
1023 regex->redirect = 0;
|
|
56
|
1024 regex->break_cycle = 0;
|
|
50
|
1025 regex->name = value[1];
|
|
|
1026
|
|
|
1027 last = 0;
|
|
|
1028
|
|
|
1029 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
|
|
|
1030 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
1031 regex->redirect = 1;
|
|
|
1032 last = 1;
|
|
|
1033 }
|
|
|
1034
|
|
|
1035 if (cf->args->nelts == 4) {
|
|
|
1036 if (ngx_strcmp(value[3].data, "last") == 0) {
|
|
|
1037 last = 1;
|
|
|
1038
|
|
|
1039 } else if (ngx_strcmp(value[3].data, "break") == 0) {
|
|
|
1040 regex->break_cycle = 1;
|
|
|
1041 last = 1;
|
|
|
1042
|
|
|
1043 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
|
|
|
1044 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
1045 regex->redirect = 1;
|
|
|
1046 last = 1;
|
|
|
1047
|
|
|
1048 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
|
|
|
1049 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
|
|
|
1050 regex->redirect = 1;
|
|
|
1051 last = 1;
|
|
|
1052
|
|
|
1053 } else {
|
|
|
1054 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1055 "invalid parameter \"%V\"", &value[3]);
|
|
|
1056 return NGX_CONF_ERROR;
|
|
|
1057 }
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 i = 0;
|
|
|
1061
|
|
|
1062 while (i < value[2].len) {
|
|
|
1063
|
|
|
1064 data = &value[2].data[i];
|
|
|
1065
|
|
|
1066 if (value[2].data[i] == '$' && i < value[2].len
|
|
|
1067 && value[2].data[i + 1] >= '1' && value[2].data[i + 1] <= '9')
|
|
|
1068 {
|
|
|
1069
|
|
|
1070 /* the "$1" - "$9" captures */
|
|
|
1071
|
|
|
1072 copy_capture = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
1073 sizeof(ngx_http_rewrite_copy_capture_code_t),
|
|
|
1074 ®ex);
|
|
|
1075 if (copy_capture == NULL) {
|
|
|
1076 return NGX_CONF_ERROR;
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 i++;
|
|
|
1080
|
|
|
1081 copy_capture->code = ngx_http_rewrite_copy_capture_code;
|
|
|
1082 copy_capture->n = value[2].data[i] - '0';
|
|
|
1083
|
|
|
1084 if (regex->ncaptures < copy_capture->n) {
|
|
|
1085 regex->ncaptures = copy_capture->n;
|
|
|
1086 }
|
|
|
1087
|
|
|
1088 copy_capture->n *= 2;
|
|
|
1089
|
|
|
1090 i++;
|
|
|
1091
|
|
|
1092 continue;
|
|
|
1093 }
|
|
|
1094
|
|
|
1095 if (value[2].data[i] == '?') {
|
|
|
1096
|
|
|
1097 /* the arguments */
|
|
|
1098
|
|
|
1099 if (i == value[2].len - 1) {
|
|
|
1100 /* the last "?" drops the original arguments */
|
|
|
1101 regex->args = 0;
|
|
|
1102 break;
|
|
|
1103 }
|
|
|
1104
|
|
|
1105 if (!regex->redirect) {
|
|
|
1106 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
|
1107 ®ex);
|
|
|
1108 if (code == NULL) {
|
|
|
1109 return NGX_CONF_ERROR;
|
|
|
1110 }
|
|
|
1111
|
|
|
1112 *code = ngx_http_rewrite_start_args_code;
|
|
|
1113
|
|
|
1114 i++;
|
|
|
1115
|
|
|
1116 continue;
|
|
|
1117 }
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 i++;
|
|
|
1121
|
|
|
1122 /* the substituion strings */
|
|
|
1123
|
|
|
1124 while (i < value[2].len && value[2].data[i] != '$') {
|
|
|
1125
|
|
|
1126 if (value[2].data[i] == '?') {
|
|
|
1127
|
|
|
1128 if (i == value[2].len - 1) {
|
|
|
1129 /*
|
|
|
1130 * the last "?" drops the original arguments,
|
|
|
1131 * and it should not be copied to a substituion
|
|
|
1132 */
|
|
|
1133 regex->args = 0;
|
|
|
1134 break;
|
|
|
1135 }
|
|
|
1136
|
|
|
1137 if (!regex->redirect) {
|
|
|
1138 break;
|
|
|
1139 }
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 i++;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 len = &value[2].data[i] - data;
|
|
|
1146
|
|
|
1147 if (len == 0) {
|
|
|
1148 continue;
|
|
|
1149 }
|
|
|
1150
|
|
|
1151 regex->size += len;
|
|
|
1152
|
|
|
1153 size = (len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1);
|
|
|
1154
|
|
|
1155 copy = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
1156 sizeof(ngx_http_rewrite_copy_code_t) + size,
|
|
|
1157 ®ex);
|
|
|
1158 if (copy == NULL) {
|
|
|
1159 return NGX_CONF_ERROR;
|
|
|
1160 }
|
|
|
1161
|
|
|
1162 copy->code = ngx_http_rewrite_copy_code;
|
|
|
1163 copy->len = len;
|
|
|
1164
|
|
|
1165 ngx_memcpy((u_char *) copy + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
1166 data, len);
|
|
|
1167 }
|
|
|
1168
|
|
|
1169 n = ngx_regex_capture_count(regex->regex);
|
|
|
1170
|
|
|
1171 if (n < 0) {
|
|
|
1172 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1173 ngx_regex_capture_count_n " failed for "
|
|
|
1174 "pattern \"%V\"", &value[1]);
|
|
|
1175 return NGX_CONF_ERROR;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 if (regex->ncaptures > (ngx_uint_t) n) {
|
|
|
1179 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1180 "pattern \"%V\" has less captures "
|
|
|
1181 "than referrenced in substitution \"%V\"",
|
|
|
1182 &value[1], &value[2]);
|
|
|
1183 return NGX_CONF_ERROR;
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 if (regex->ncaptures < (ngx_uint_t) n) {
|
|
|
1187 regex->ncaptures = (ngx_uint_t) n;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 if (regex->ncaptures) {
|
|
|
1191 regex->ncaptures = (regex->ncaptures + 1) * 3;
|
|
|
1192 }
|
|
|
1193
|
|
|
1194 regex_end = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
1195 sizeof(ngx_http_rewrite_regex_end_code_t),
|
|
|
1196 ®ex);
|
|
|
1197 if (regex_end == NULL) {
|
|
|
1198 return NGX_CONF_ERROR;
|
|
|
1199 }
|
|
|
1200
|
|
|
1201 regex_end->code = ngx_http_rewrite_regex_end_code;
|
|
|
1202 regex_end->uri = regex->uri;
|
|
|
1203 regex_end->args = regex->args;
|
|
|
1204 regex_end->redirect = regex->redirect;
|
|
|
1205
|
|
|
1206 if (last) {
|
|
|
1207 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
|
1208 ®ex);
|
|
|
1209 if (code == NULL) {
|
|
|
1210 return NGX_CONF_ERROR;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 *code = (uintptr_t) NULL;
|
|
|
1214 }
|
|
|
1215
|
|
|
1216 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
1217 - (u_char *) regex;
|
|
|
1218
|
|
|
1219 return NGX_CONF_OK;
|
|
|
1220 }
|
|
|
1221
|
|
|
1222
|
|
|
1223 static char *
|
|
|
1224 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1225 {
|
|
|
1226 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1227
|
|
|
1228 ngx_str_t *value;
|
|
|
1229 ngx_http_rewrite_return_code_t *ret;
|
|
|
1230
|
|
|
1231 ret = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1232 sizeof(ngx_http_rewrite_return_code_t));
|
|
|
1233 if (ret == NULL) {
|
|
|
1234 return NGX_CONF_ERROR;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 value = cf->args->elts;
|
|
|
1238
|
|
|
1239 ret->code = ngx_http_rewrite_return_code;
|
|
|
1240 ret->null = (uintptr_t) NULL;
|
|
|
1241
|
|
|
1242 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
|
1243
|
|
|
1244 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
|
1245 return NGX_CONF_ERROR;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 return NGX_CONF_OK;
|
|
|
1249 }
|
|
|
1250
|
|
|
1251
|
|
|
1252 static char *
|
|
|
1253 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1254 {
|
|
|
1255 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1256
|
|
|
1257 void *mconf;
|
|
|
1258 char *rv;
|
|
|
1259 u_char *elts;
|
|
|
1260 ngx_uint_t i;
|
|
|
1261 ngx_conf_t save;
|
|
|
1262 ngx_http_module_t *module;
|
|
|
1263 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
|
1264 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp;
|
|
|
1265 ngx_http_rewrite_if_code_t *if_code;
|
|
|
1266 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
|
1267
|
|
|
1268 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
1269 if (ctx == NULL) {
|
|
|
1270 return NGX_CONF_ERROR;
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 pctx = cf->ctx;
|
|
|
1274 ctx->main_conf = pctx->main_conf;
|
|
|
1275 ctx->srv_conf = pctx->srv_conf;
|
|
|
1276
|
|
|
1277 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
1278 if (ctx->loc_conf == NULL) {
|
|
|
1279 return NGX_CONF_ERROR;
|
|
|
1280 }
|
|
|
1281
|
|
|
1282 for (i = 0; ngx_modules[i]; i++) {
|
|
|
1283 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
|
1284 continue;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 module = ngx_modules[i]->ctx;
|
|
|
1288
|
|
|
1289 if (module->create_loc_conf) {
|
|
|
1290
|
|
|
1291 mconf = module->create_loc_conf(cf);
|
|
|
1292 if (mconf == NULL) {
|
|
|
1293 return NGX_CONF_ERROR;
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
|
1297 }
|
|
|
1298 }
|
|
|
1299
|
|
|
1300 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1301
|
|
|
1302 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1303 clcf->loc_conf = ctx->loc_conf;
|
|
|
1304 clcf->name = pclcf->name;
|
|
|
1305 clcf->noname = 1;
|
|
|
1306
|
|
|
1307 if (pclcf->locations.elts == NULL) {
|
|
|
1308 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *))
|
|
|
1309 == NGX_ERROR)
|
|
|
1310 {
|
|
|
1311 return NGX_CONF_ERROR;
|
|
|
1312 }
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 clcfp = ngx_array_push(&pclcf->locations);
|
|
|
1316 if (clcfp == NULL) {
|
|
|
1317 return NGX_CONF_ERROR;
|
|
|
1318 }
|
|
|
1319
|
|
|
1320 *clcfp = clcf;
|
|
|
1321
|
|
|
1322
|
|
|
1323 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) {
|
|
|
1324 return NGX_CONF_ERROR;
|
|
|
1325 }
|
|
|
1326
|
|
|
1327 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_rewrite_if_code_t));
|
|
|
1328 if (if_code == NULL) {
|
|
|
1329 return NULL;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 if_code->code = ngx_http_rewrite_if_code;
|
|
|
1333
|
|
|
1334 elts = lcf->codes->elts;
|
|
|
1335
|
|
|
1336
|
|
|
1337 /* the inside directives must compile to the same code array */
|
|
|
1338
|
|
|
1339 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
|
1340 nlcf->codes = lcf->codes;
|
|
|
1341
|
|
|
1342
|
|
|
1343 save = *cf;
|
|
|
1344 cf->ctx = ctx;
|
|
|
1345
|
|
|
1346 if (pclcf->name.len == 0) {
|
|
|
1347 if_code->loc_conf = NULL;
|
|
|
1348 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
|
1349
|
|
|
1350 } else {
|
|
|
1351 if_code->loc_conf = ctx->loc_conf;
|
|
|
1352 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 rv = ngx_conf_parse(cf, NULL);
|
|
|
1356
|
|
|
1357 *cf = save;
|
|
|
1358
|
|
|
1359 if (rv != NGX_CONF_OK) {
|
|
|
1360 return rv;
|
|
|
1361 }
|
|
|
1362
|
|
|
1363
|
|
|
1364 if (elts != lcf->codes->elts) {
|
|
|
1365 if_code = (ngx_http_rewrite_if_code_t *)
|
|
|
1366 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
1370 - (u_char *) if_code;
|
|
|
1371
|
|
|
1372 return NGX_CONF_OK;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375
|
|
|
1376 static char *
|
|
|
1377 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf)
|
|
|
1378 {
|
|
|
1379 ngx_str_t *value, err;
|
|
|
1380 ngx_uint_t cur, last;
|
|
|
1381 ngx_http_rewrite_regex_code_t *regex;
|
|
|
1382 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
|
1383
|
|
|
1384 value = cf->args->elts;
|
|
|
1385 last = cf->args->nelts - 1;
|
|
|
1386
|
|
|
1387 if (value[1].len < 1 || value[1].data[0] != '(') {
|
|
|
1388 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1389 "invalid condition \"%V\"", &value[1]);
|
|
|
1390 return NGX_CONF_ERROR;
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 if (value[1].len == 1) {
|
|
|
1394 cur = 2;
|
|
|
1395
|
|
|
1396 } else {
|
|
|
1397 cur = 1;
|
|
|
1398 value[1].len--;
|
|
|
1399 value[1].data++;
|
|
|
1400 }
|
|
|
1401
|
|
|
1402 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') {
|
|
|
1403 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1404 "invalid condition \"%V\"", &value[last]);
|
|
|
1405 return NGX_CONF_ERROR;
|
|
|
1406 }
|
|
|
1407
|
|
|
1408 if (value[last].len == 1) {
|
|
|
1409 last--;
|
|
|
1410
|
|
|
1411 } else {
|
|
|
1412 value[last].len--;
|
|
|
1413 value[last].data[value[last].len] = '\0';
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 if (value[cur].len > 1 && value[cur].data[0] == '$') {
|
|
|
1417
|
|
|
1418 if (cur != last && cur + 2 != last) {
|
|
|
1419 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1420 "invalid condition \"%V\"", &value[cur]);
|
|
|
1421 return NGX_CONF_ERROR;
|
|
|
1422 }
|
|
|
1423
|
|
|
1424 if (ngx_http_rewrite_variable(cf, lcf, &value[cur])!= NGX_CONF_OK) {
|
|
|
1425 return NGX_CONF_ERROR;
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 if (cur == last) {
|
|
|
1429 return NGX_CONF_OK;
|
|
|
1430 }
|
|
|
1431
|
|
|
1432 cur++;
|
|
|
1433
|
|
|
1434 if ((value[cur].len == 1 && value[cur].data[0] != '~')
|
|
|
1435 || (value[cur].len == 2
|
|
|
1436 && value[cur].data[0] != '~' && value[cur].data[1] != '*'))
|
|
|
1437 {
|
|
|
1438 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1439 "unexpected \"%V\" in condition", &value[cur]);
|
|
|
1440 return NGX_CONF_ERROR;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 regex = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1444 sizeof(ngx_http_rewrite_regex_code_t));
|
|
|
1445 if (regex == NULL) {
|
|
|
1446 return NGX_CONF_ERROR;
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
1450 err.data = errstr;
|
|
|
1451
|
|
|
1452 regex->regex = ngx_regex_compile(&value[last],
|
|
|
1453 (value[cur].len == 2) ? NGX_REGEX_CASELESS : 0,
|
|
|
1454 cf->pool, &err);
|
|
|
1455
|
|
|
1456 if (regex->regex == NULL) {
|
|
|
1457 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
1458 return NGX_CONF_ERROR;
|
|
|
1459 }
|
|
|
1460
|
|
|
1461 regex->code = ngx_http_rewrite_regex_start_code;
|
|
|
1462 regex->size = 0;
|
|
|
1463 regex->ncaptures = 0;
|
|
|
1464 regex->status = 0;
|
|
|
1465 regex->next = sizeof(ngx_http_rewrite_regex_code_t);
|
|
|
1466 regex->test = 1;
|
|
|
1467 regex->uri = 0;
|
|
|
1468 regex->args = 0;
|
|
|
1469 regex->redirect = 0;
|
|
56
|
1470 regex->break_cycle = 0;
|
|
50
|
1471 regex->name = value[last];
|
|
|
1472
|
|
|
1473 return NGX_CONF_OK;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1477 "invalid condition \"%V\"", &value[cur]);
|
|
|
1478
|
|
|
1479 return NGX_CONF_ERROR;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482
|
|
|
1483 static char *
|
|
|
1484 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
|
1485 ngx_str_t *value)
|
|
|
1486 {
|
|
|
1487 ngx_http_variable_t *var;
|
|
|
1488 ngx_http_rewrite_code_pt *code;
|
|
|
1489 ngx_http_rewrite_var_code_t *var_code;
|
|
|
1490
|
|
|
1491 value->len--;
|
|
|
1492 value->data++;
|
|
|
1493
|
|
|
1494 if (value->len == sizeof("invalid_referer") - 1
|
|
|
1495 && ngx_strncmp(value->data, "invalid_referer",
|
|
|
1496 sizeof("invalid_referer") - 1) == 0)
|
|
|
1497 {
|
|
|
1498 code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1499 sizeof(ngx_http_rewrite_code_pt));
|
|
|
1500 if (code == NULL) {
|
|
|
1501 return NGX_CONF_ERROR;
|
|
|
1502 }
|
|
|
1503
|
|
|
1504 *code = ngx_http_rewrite_invalid_referer_code;
|
|
|
1505
|
|
|
1506 } else {
|
|
|
1507 var = ngx_http_add_variable(cf, value, 0);
|
|
|
1508
|
|
|
1509 if (var == NULL) {
|
|
|
1510 return NGX_CONF_ERROR;
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 var_code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1514 sizeof(ngx_http_rewrite_var_code_t));
|
|
|
1515 if (var_code == NULL) {
|
|
|
1516 return NGX_CONF_ERROR;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 var_code->code = ngx_http_rewrite_var_code;
|
|
|
1520 var_code->index = var->index;
|
|
|
1521 }
|
|
|
1522
|
|
|
1523 return NGX_CONF_OK;
|
|
|
1524 }
|
|
|
1525
|
|
|
1526
|
|
|
1527 static char *
|
|
|
1528 ngx_http_rewrite_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1529 {
|
|
|
1530 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1531
|
|
|
1532 ngx_uint_t i, server_names;
|
|
|
1533 ngx_str_t *value;
|
|
|
1534 ngx_http_server_name_t *sn;
|
|
|
1535 ngx_http_core_srv_conf_t *cscf;
|
|
|
1536 ngx_http_rewrite_referer_t *ref;
|
|
|
1537
|
|
|
1538 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module);
|
|
|
1539
|
|
|
1540 if (lcf->referers == NULL) {
|
|
|
1541 lcf->referers = ngx_array_create(cf->pool,
|
|
|
1542 cf->args->nelts + cscf->server_names.nelts,
|
|
|
1543 sizeof(ngx_http_rewrite_referer_t));
|
|
|
1544 if (lcf->referers == NULL) {
|
|
|
1545 return NGX_CONF_ERROR;
|
|
|
1546 }
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 value = cf->args->elts;
|
|
|
1550 server_names = 0;
|
|
|
1551
|
|
|
1552 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1553 if (value[i].len == 0) {
|
|
|
1554 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1555 "invalid referer \"%V\"", &value[i]);
|
|
|
1556 return NGX_CONF_ERROR;
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 if (ngx_strcmp(value[i].data, "none") == 0) {
|
|
|
1560 lcf->no_referer = 1;
|
|
|
1561 continue;
|
|
|
1562 }
|
|
|
1563
|
|
54
|
1564 if (ngx_strcmp(value[i].data, "blocked") == 0) {
|
|
|
1565 lcf->blocked_referer = 1;
|
|
|
1566 continue;
|
|
|
1567 }
|
|
|
1568
|
|
50
|
1569 if (ngx_strcmp(value[i].data, "server_names") == 0) {
|
|
|
1570 server_names = 1;
|
|
|
1571 continue;
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 ref = ngx_array_push(lcf->referers);
|
|
|
1575 if (ref == NULL) {
|
|
|
1576 return NGX_CONF_ERROR;
|
|
|
1577 }
|
|
|
1578
|
|
|
1579 if (value[i].data[0] != '*') {
|
|
|
1580 ref->name = value[i];
|
|
|
1581 ref->wildcard = 0;
|
|
|
1582 continue;
|
|
|
1583 }
|
|
|
1584
|
|
|
1585 if (value[i].data[1] != '.') {
|
|
|
1586 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1587 "invalid wildcard referer \"%V\"", &value[i]);
|
|
|
1588 return NGX_CONF_ERROR;
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 ref->name.len = value[i].len - 1;
|
|
|
1592 ref->name.data = value[i].data + 1;
|
|
|
1593 ref->wildcard = 1;
|
|
|
1594 }
|
|
|
1595
|
|
|
1596 if (!server_names) {
|
|
|
1597 return NGX_CONF_OK;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 sn = cscf->server_names.elts;
|
|
|
1601 for (i = 0; i < cscf->server_names.nelts; i++) {
|
|
|
1602 ref = ngx_array_push(lcf->referers);
|
|
|
1603 if (ref == NULL) {
|
|
|
1604 return NGX_CONF_ERROR;
|
|
|
1605 }
|
|
|
1606
|
|
|
1607 ref->name.len = sn[i].name.len + 1;
|
|
|
1608 ref->name.data = ngx_palloc(cf->pool, ref->name.len);
|
|
|
1609 if (ref->name.data == NULL) {
|
|
|
1610 return NGX_CONF_ERROR;
|
|
|
1611 }
|
|
|
1612
|
|
|
1613 ngx_memcpy(ref->name.data, sn[i].name.data, sn[i].name.len);
|
|
|
1614 ref->name.data[sn[i].name.len] = '/';
|
|
|
1615 ref->wildcard = sn[i].wildcard;
|
|
|
1616 }
|
|
|
1617
|
|
|
1618 return NGX_CONF_OK;
|
|
|
1619 }
|
|
|
1620
|
|
|
1621
|
|
|
1622 static char *
|
|
|
1623 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1624 {
|
|
|
1625 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1626
|
|
|
1627 ngx_int_t n;
|
|
|
1628 ngx_str_t *value;
|
|
|
1629 ngx_http_variable_t *v;
|
|
|
1630 ngx_http_rewrite_var_code_t *var;
|
|
|
1631 ngx_http_rewrite_value_code_t *val;
|
|
|
1632
|
|
|
1633 value = cf->args->elts;
|
|
|
1634
|
|
|
1635 if (value[1].data[0] != '$') {
|
|
|
1636 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1637 "invalid variable name \"%V\"", &value[1]);
|
|
|
1638 return NGX_CONF_ERROR;
|
|
|
1639 }
|
|
|
1640
|
|
|
1641 value[1].len--;
|
|
|
1642 value[1].data++;
|
|
|
1643
|
|
|
1644 v = ngx_http_add_variable(cf, &value[1], 1);
|
|
|
1645 if (v == NULL) {
|
|
|
1646 return NGX_CONF_ERROR;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649 v->handler = ngx_http_rewrite_var;
|
|
|
1650 v->data = v->index;
|
|
|
1651
|
|
|
1652 val = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1653 sizeof(ngx_http_rewrite_value_code_t));
|
|
|
1654 if (val == NULL) {
|
|
|
1655 return NGX_CONF_ERROR;
|
|
|
1656 }
|
|
|
1657
|
|
|
1658 n = ngx_atoi(value[2].data, value[2].len);
|
|
|
1659
|
|
|
1660 if (n == NGX_ERROR) {
|
|
|
1661 n = 0;
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 val->code = ngx_http_rewrite_value_code;
|
|
|
1665 val->value = (uintptr_t) n;
|
|
|
1666 val->text_len = (uintptr_t) value[2].len;
|
|
|
1667 val->text_data = (uintptr_t) value[2].data;
|
|
|
1668
|
|
|
1669 var = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1670 sizeof(ngx_http_rewrite_var_code_t));
|
|
|
1671 if (var == NULL) {
|
|
|
1672 return NGX_CONF_ERROR;
|
|
|
1673 }
|
|
|
1674
|
|
|
1675 var->code = ngx_http_rewrite_set_var_code;
|
|
|
1676 var->index = (uintptr_t) v->index;
|
|
|
1677
|
|
|
1678 return NGX_CONF_OK;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681
|
|
|
1682 static void *
|
|
|
1683 ngx_http_rewrite_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size)
|
|
|
1684 {
|
|
|
1685 if (*codes == NULL) {
|
|
|
1686 *codes = ngx_array_create(pool, 256, 1);
|
|
|
1687 if (*codes == NULL) {
|
|
|
1688 return NULL;
|
|
|
1689 }
|
|
|
1690 }
|
|
|
1691
|
|
|
1692 return ngx_array_push_n(*codes, size);
|
|
|
1693 }
|
|
|
1694
|
|
|
1695
|
|
|
1696 static void *
|
|
|
1697 ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size, void *code)
|
|
|
1698 {
|
|
|
1699 u_char *elts, **p;
|
|
|
1700 void *new;
|
|
|
1701
|
|
|
1702 elts = codes->elts;
|
|
|
1703
|
|
|
1704 new = ngx_array_push_n(codes, size);
|
|
|
1705 if (new == NULL) {
|
|
|
1706 return NGX_CONF_ERROR;
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 if (elts != codes->elts) {
|
|
|
1710 p = code;
|
|
|
1711 *p += (u_char *) codes->elts - elts;
|
|
|
1712 }
|
|
|
1713
|
|
|
1714 return new;
|
|
|
1715 }
|
