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0
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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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34
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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_array_t *codes; /* uintptr_t */
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25 ngx_array_t *referers; /* ngx_http_rewrite_referer_t */
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26
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27 ngx_uint_t max_captures;
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28 ngx_uint_t stack_size;
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29
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30 ngx_flag_t log;
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31
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32 ngx_flag_t no_referer;
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33 } ngx_http_rewrite_loc_conf_t;
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0
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34
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35
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36 typedef struct {
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34
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37 ngx_http_rewrite_code_pt code;
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38 ngx_regex_t *regex;
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39 uintptr_t size;
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40 uintptr_t ncaptures;
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41 uintptr_t status;
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42 uintptr_t next;
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43
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44 uintptr_t uri:1;
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45
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46 /* add the r->args to the new arguments */
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47 uintptr_t args:1;
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48
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49 uintptr_t redirect:1;
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50
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51 ngx_str_t name;
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52 } ngx_http_rewrite_regex_code_t;
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53
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54
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55 typedef struct {
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56 ngx_http_rewrite_code_pt code;
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57
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58 uintptr_t uri:1;
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59
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60 /* add the r->args to the new arguments */
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61 uintptr_t args:1;
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62
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63 uintptr_t redirect:1;
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64 } ngx_http_rewrite_regex_end_code_t;
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65
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66 typedef struct {
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67 ngx_http_rewrite_code_pt code;
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68 uintptr_t n;
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69 } ngx_http_rewrite_copy_capture_code_t;
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0
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70
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71
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72 typedef struct {
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34
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73 ngx_http_rewrite_code_pt code;
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74 uintptr_t len;
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75 } ngx_http_rewrite_copy_code_t;
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0
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76
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77
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34
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78 typedef struct {
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79 ngx_http_rewrite_code_pt code;
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80 uintptr_t status;
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81 uintptr_t null;
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82 } ngx_http_rewrite_return_code_t;
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0
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83
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34
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84
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85 typedef struct {
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86 ngx_http_rewrite_code_pt code;
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87 uintptr_t next;
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88 void **loc_conf;
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89 } ngx_http_rewrite_if_code_t;
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0
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90
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91
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92 typedef struct {
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34
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93 ngx_http_rewrite_code_pt code;
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94 uintptr_t index;
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95 } ngx_http_rewrite_var_code_t;
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0
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96
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97
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34
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98 struct ngx_http_rewrite_engine_s {
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99 u_char *ip;
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100 uintptr_t *sp;
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101
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102 ngx_str_t buf;
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103 ngx_str_t *line;
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104
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105 u_char *pos;
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106
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107 /* the start of the rewritten arguments */
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108 u_char *args;
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109
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110 unsigned quote:1;
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111
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112 ngx_int_t status;
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113
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114 int *captures;
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115
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116 ngx_http_request_t *request;
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117 ngx_http_rewrite_loc_conf_t *conf;
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118 };
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0
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119
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120
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34
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121 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle);
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122 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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123 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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124 void *parent, void *child);
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125 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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126 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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127 void *conf);
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128 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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129 void *conf);
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130 static char *ngx_http_rewrite_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd,
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131 void *conf);
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132 static void *ngx_http_rewrite_start_code(ngx_pool_t *pool,
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133 ngx_array_t **codes, size_t size);
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134 static void *ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size,
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135 u_char **main);
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0
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136
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137
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138 static ngx_command_t ngx_http_rewrite_commands[] = {
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139
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140 { ngx_string("rewrite"),
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34
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141 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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142 |NGX_CONF_TAKE23,
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143 ngx_http_rewrite,
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144 NGX_HTTP_LOC_CONF_OFFSET,
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145 0,
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146 NULL },
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147
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148 { ngx_string("return"),
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149 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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150 |NGX_CONF_TAKE1,
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151 ngx_http_rewrite_return,
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152 NGX_HTTP_LOC_CONF_OFFSET,
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0
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153 0,
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154 NULL },
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155
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34
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156 { ngx_string("if"),
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157 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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158 ngx_http_rewrite_if,
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0
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159 NGX_HTTP_LOC_CONF_OFFSET,
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160 0,
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34
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161 NULL },
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162
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163 { ngx_string("valid_referers"),
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164 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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165 ngx_http_rewrite_valid_referers,
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166 NGX_HTTP_LOC_CONF_OFFSET,
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167 0,
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168 NULL },
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0
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169
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170 { ngx_string("rewrite_log"),
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34
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171 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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172 |NGX_CONF_TAKE1,
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0
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173 ngx_conf_set_flag_slot,
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34
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174 NGX_HTTP_LOC_CONF_OFFSET,
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175 offsetof(ngx_http_rewrite_loc_conf_t, log),
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0
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176 NULL },
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177
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178 ngx_null_command
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179 };
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180
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181
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182 ngx_http_module_t ngx_http_rewrite_module_ctx = {
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183 NULL, /* pre conf */
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184
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185 NULL, /* create main configuration */
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186 NULL, /* init main configuration */
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187
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34
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188 NULL, /* create server configuration */
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189 NULL, /* merge server configuration */
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0
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190
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191 ngx_http_rewrite_create_loc_conf, /* create location configration */
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34
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192 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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0
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193 };
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194
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195
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196 ngx_module_t ngx_http_rewrite_module = {
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197 NGX_MODULE,
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34
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198 &ngx_http_rewrite_module_ctx, /* module context */
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0
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199 ngx_http_rewrite_commands, /* module directives */
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200 NGX_HTTP_MODULE, /* module type */
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201 ngx_http_rewrite_init, /* init module */
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202 NULL /* init process */
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0
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203 };
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204
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205
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34
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206 #define ngx_http_rewrite_exit (u_char *) &ngx_http_rewrite_exit_code
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207
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208 uintptr_t ngx_http_rewrite_exit_code = (uintptr_t) NULL;
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209
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210
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0
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211 static ngx_int_t ngx_http_rewrite_handler(ngx_http_request_t *r)
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212 {
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34
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213 ngx_http_rewrite_code_pt code;
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214 ngx_http_rewrite_engine_t *e;
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215 ngx_http_rewrite_loc_conf_t *cf;
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0
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216
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217 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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218
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219 if (cf->codes == NULL) {
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220 return NGX_DECLINED;
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221 }
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0
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222
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34
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223 if (!(e = ngx_palloc(r->pool, sizeof(ngx_http_rewrite_engine_t)))) {
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224 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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225 }
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0
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226
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227 e->sp = ngx_palloc(r->pool, cf->stack_size * sizeof(ngx_int_t));
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228 if (e->sp == NULL) {
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229 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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230 }
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0
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231
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34
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232 if (cf->max_captures) {
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233 e->captures = ngx_palloc(r->pool, cf->max_captures * sizeof(int));
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234 if (e->captures == NULL) {
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0
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235 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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236 }
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237
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34
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238 } else {
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239 e->captures = NULL;
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240 }
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241
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242 e->ip = cf->codes->elts;
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243 e->buf.len = 0;
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244 e->buf.data = NULL;
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245 e->line = NULL;
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246 e->pos = NULL;
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247 e->args = NULL;
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248 e->quote = 1;
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249 e->status = NGX_DECLINED;
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250 e->request = r;
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251 e->conf = cf;
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252
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253 while (*(uintptr_t *) e->ip) {
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254 code = *(ngx_http_rewrite_code_pt *) e->ip;
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255 code(e);
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256 }
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257
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258 return e->status;
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259 }
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260
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261
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262 static void ngx_http_rewrite_regex_start_code(ngx_http_rewrite_engine_t *e)
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263 {
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264 ngx_int_t rc;
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265 ngx_uint_t n;
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266 ngx_http_request_t *r;
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267 ngx_http_rewrite_regex_code_t *code;
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268
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269 code = (ngx_http_rewrite_regex_code_t *) e->ip;
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270
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271 r = e->request;
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272
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273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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274 "http rewrite start: \"%V\"", &code->name);
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275
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276 if (code->uri) {
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277 e->line = &r->uri;
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278 } else {
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279 e->line = *(ngx_str_t **) e->sp--;
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280 }
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281
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282 rc = ngx_regex_exec(code->regex, e->line, e->captures, code->ncaptures);
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283
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284 if (rc == NGX_REGEX_NO_MATCHED) {
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285 if (e->conf->log) {
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286 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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287 "\"%V\" does not match \"%V\"", &code->name, e->line);
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288 }
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289
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290 e->ip += code->next;
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291 return;
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292 }
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293
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294 if (rc < 0) {
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295 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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296 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
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297 rc, e->line, &code->name);
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298
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299 e->ip = ngx_http_rewrite_exit;
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300 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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301 return;
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302 }
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303
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304 if (e->conf->log) {
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305 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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306 "\"%V\" matches \"%V\"", &code->name, e->line);
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307 }
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308
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309 if (code->status) {
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310 e->status = code->status;
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311
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312 if (!code->redirect) {
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313 e->ip = ngx_http_rewrite_exit;
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314 return;
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315 }
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316 }
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317
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318 e->buf.len = code->size;
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0
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319
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34
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320 if (code->uri) {
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321 r->uri_changed = 1;
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322
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323 if (rc && (r->quoted_uri || r->plus_in_uri)) {
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324 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
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325 NGX_ESCAPE_ARGS);
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326 }
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327 }
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328
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329 for (n = 1; n < (ngx_uint_t) rc; n++) {
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330 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n];
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331 }
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332
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333 if (code->args && r->args.len) {
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334 e->buf.len += r->args.len + 1;
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335 }
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336
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337 if (!(e->buf.data = ngx_palloc(r->pool, e->buf.len))) {
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338 e->ip = ngx_http_rewrite_exit;
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339 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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340 return;
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341 }
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342
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343 e->quote = code->redirect;
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344
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345 e->pos = e->buf.data;
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346
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347 e->ip += sizeof(ngx_http_rewrite_regex_code_t);
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348 }
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349
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350
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351 static void ngx_http_rewrite_regex_end_code(ngx_http_rewrite_engine_t *e)
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352 {
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353 ngx_http_request_t *r;
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354 ngx_http_rewrite_regex_end_code_t *code;
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355
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356 code = (ngx_http_rewrite_regex_end_code_t *) e->ip;
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357
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358 r = e->request;
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0
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359
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34
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360 e->quote = 0;
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361
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362 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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363 "http rewrite end");
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364
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365 if (e->args) {
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366 e->buf.len = e->args - e->buf.data;
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367
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368 if (code->args && r->args.len) {
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369 *e->pos++ = '&';
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370 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
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371 }
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372
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373 r->args.len = e->pos - e->args;
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374 r->args.data = e->args;
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375
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376 e->args = NULL;
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0
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377
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34
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378 } else {
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379 if (code->args && r->args.len) {
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380 *e->pos++ = '&';
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381 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
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382 }
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383
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384 e->buf.len = e->pos - e->buf.data;
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385 }
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32
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386
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34
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387 if (!code->redirect) {
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388 if (e->conf->log) {
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389 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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390 "rewritten data: \"%V\", args: \"%V\"",
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391 &e->buf, &r->args);
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392 }
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393
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394 if (code->uri) {
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395 r->uri = e->buf;
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396
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397 if (ngx_http_set_exten(r) != NGX_OK) {
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398 e->ip = ngx_http_rewrite_exit;
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399 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
400 return;
|
|
0
|
401 }
|
|
|
402 }
|
|
|
403
|
|
34
|
404 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
405 return;
|
|
0
|
406 }
|
|
|
407
|
|
34
|
408 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
|
|
|
409 "rewritten redirect: \"%V\"", &e->buf);
|
|
0
|
410
|
|
34
|
411 if (!(r->headers_out.location = ngx_list_push(&r->headers_out.headers))) {
|
|
|
412 e->ip = ngx_http_rewrite_exit;
|
|
|
413 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
414 return;
|
|
0
|
415 }
|
|
|
416
|
|
34
|
417 if (e->buf.data[0] != '/') {
|
|
0
|
418 r->headers_out.location->key.len = sizeof("Location") - 1;
|
|
|
419 r->headers_out.location->key.data = (u_char *) "Location";
|
|
|
420 }
|
|
|
421
|
|
34
|
422 r->headers_out.location->value = e->buf;
|
|
|
423
|
|
|
424 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
425 }
|
|
|
426
|
|
|
427
|
|
|
428 static void ngx_http_rewrite_copy_capture_code(ngx_http_rewrite_engine_t *e)
|
|
|
429 {
|
|
|
430 ngx_http_rewrite_copy_capture_code_t *code;
|
|
|
431
|
|
|
432 code = (ngx_http_rewrite_copy_capture_code_t *) e->ip;
|
|
0
|
433
|
|
34
|
434 e->ip += sizeof(ngx_http_rewrite_copy_capture_code_t);
|
|
|
435
|
|
|
436 if ((e->args || e->quote)
|
|
|
437 && (e->request->quoted_uri || e->request->plus_in_uri))
|
|
|
438 {
|
|
|
439 e->pos = (u_char *) ngx_escape_uri(e->pos,
|
|
|
440 &e->line->data[e->captures[code->n]],
|
|
|
441 e->captures[code->n + 1] - e->captures[code->n],
|
|
|
442 NGX_ESCAPE_ARGS);
|
|
|
443 } else {
|
|
|
444 e->pos = ngx_cpymem(e->pos, &e->line->data[e->captures[code->n]],
|
|
|
445 e->captures[code->n + 1] - e->captures[code->n]);
|
|
0
|
446 }
|
|
|
447
|
|
34
|
448 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
449 "http rewrite capture: \"%V\"", &e->buf);
|
|
|
450 }
|
|
|
451
|
|
|
452
|
|
|
453 static void ngx_http_rewrite_copy_code(ngx_http_rewrite_engine_t *e)
|
|
|
454 {
|
|
|
455 ngx_http_rewrite_copy_code_t *code;
|
|
|
456
|
|
|
457 code = (ngx_http_rewrite_copy_code_t *) e->ip;
|
|
|
458
|
|
|
459 e->pos = ngx_cpymem(e->pos, e->ip + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
460 code->len);
|
|
|
461
|
|
|
462 e->ip += sizeof(ngx_http_rewrite_copy_code_t)
|
|
|
463 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
|
|
|
464
|
|
|
465 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
466 "http rewrite copy: \"%V\"", &e->buf);
|
|
|
467 }
|
|
|
468
|
|
|
469
|
|
|
470 static void ngx_http_rewrite_start_args_code(ngx_http_rewrite_engine_t *e)
|
|
|
471 {
|
|
|
472 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
473 "http rewrite args");
|
|
|
474
|
|
|
475 e->args = e->pos;
|
|
|
476 e->ip += sizeof(uintptr_t);
|
|
|
477 }
|
|
|
478
|
|
0
|
479
|
|
34
|
480 static void ngx_http_rewrite_return_code(ngx_http_rewrite_engine_t *e)
|
|
|
481 {
|
|
|
482 ngx_http_rewrite_return_code_t *code;
|
|
|
483
|
|
|
484 code = (ngx_http_rewrite_return_code_t *) e->ip;
|
|
|
485
|
|
|
486 e->status = code->status;
|
|
|
487
|
|
|
488 e->ip += sizeof(ngx_http_rewrite_return_code_t) - sizeof(uintptr_t);
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
|
492 static void ngx_http_rewrite_if_code(ngx_http_rewrite_engine_t *e)
|
|
|
493 {
|
|
|
494 ngx_http_rewrite_if_code_t *code;
|
|
|
495
|
|
|
496 code = (ngx_http_rewrite_if_code_t *) e->ip;
|
|
|
497
|
|
|
498 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
499 "http rewrite if");
|
|
|
500
|
|
|
501 if (*e->sp--) {
|
|
|
502 if (code->loc_conf) {
|
|
|
503 e->request->loc_conf = code->loc_conf;
|
|
|
504 }
|
|
|
505
|
|
|
506 e->ip += sizeof(ngx_http_rewrite_if_code_t);
|
|
|
507 return;
|
|
|
508 }
|
|
|
509
|
|
|
510 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
511 "http rewrite if false");
|
|
|
512
|
|
|
513 e->ip += code->next;
|
|
0
|
514 }
|
|
|
515
|
|
|
516
|
|
34
|
517 static void ngx_http_rewrite_var_code(ngx_http_rewrite_engine_t *e)
|
|
0
|
518 {
|
|
34
|
519 ngx_http_variable_value_t *value;
|
|
|
520 ngx_http_rewrite_var_code_t *code;
|
|
|
521
|
|
|
522 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
523 "http rewrite var");
|
|
|
524
|
|
|
525 code = (ngx_http_rewrite_var_code_t *) e->ip;
|
|
0
|
526
|
|
34
|
527 e->sp++;
|
|
|
528
|
|
|
529 e->ip += sizeof(ngx_http_rewrite_var_code_t);
|
|
|
530
|
|
|
531 if (!(value = ngx_http_get_variable(e->request, code->index))) {
|
|
|
532 *e->sp = (uintptr_t) 0;
|
|
|
533 return;
|
|
0
|
534 }
|
|
|
535
|
|
34
|
536 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
537 "http rewrite var: %p", value->value);
|
|
0
|
538
|
|
34
|
539 *e->sp = value->value;
|
|
0
|
540 }
|
|
|
541
|
|
|
542
|
|
34
|
543 static void ngx_http_rewrite_invalid_referer_code(ngx_http_rewrite_engine_t *e)
|
|
0
|
544 {
|
|
34
|
545 u_char *ref;
|
|
|
546 size_t len;
|
|
|
547 ngx_uint_t i, n;
|
|
|
548 ngx_http_request_t *r;
|
|
|
549 ngx_http_rewrite_referer_t *refs;
|
|
|
550 ngx_http_rewrite_loc_conf_t *cf;
|
|
|
551
|
|
|
552 r = e->request;
|
|
|
553
|
|
|
554 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
555 "http rewrite invalid referer");
|
|
|
556
|
|
|
557 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
|
|
|
558
|
|
|
559 e->sp++;
|
|
|
560 e->ip += sizeof(uintptr_t);
|
|
|
561
|
|
|
562 if (cf->referers == NULL) {
|
|
|
563 *e->sp = (uintptr_t) 0;
|
|
|
564 return;
|
|
|
565 }
|
|
|
566
|
|
|
567 if (r->headers_in.referer == NULL) {
|
|
|
568 if (cf->no_referer) {
|
|
|
569 *e->sp = (uintptr_t) 0;
|
|
|
570 return;
|
|
|
571 } else {
|
|
|
572 *e->sp = (uintptr_t) 1;
|
|
|
573 return;
|
|
|
574 }
|
|
|
575 }
|
|
|
576
|
|
|
577 len = r->headers_in.referer->value.len;
|
|
|
578 ref = r->headers_in.referer->value.data;
|
|
|
579
|
|
|
580 if (len < sizeof("http://i.ru") - 1
|
|
|
581 || (ngx_strncasecmp(ref, "http://", 7) != 0))
|
|
|
582 {
|
|
|
583 *e->sp = (uintptr_t) 1;
|
|
|
584 return;
|
|
|
585 }
|
|
|
586
|
|
|
587 len -= 7;
|
|
|
588 ref += 7;
|
|
|
589
|
|
|
590 refs = cf->referers->elts;
|
|
|
591 for (i = 0; i < cf->referers->nelts; i++ ){
|
|
|
592
|
|
|
593 if (refs[i].name.len > len) {
|
|
|
594 continue;
|
|
|
595 }
|
|
0
|
596
|
|
34
|
597 if (refs[i].wildcard) {
|
|
|
598 for (n = 0; n < len; n++) {
|
|
|
599 if (ref[n] == '/' || ref[n] == ':') {
|
|
|
600 break;
|
|
|
601 }
|
|
|
602
|
|
|
603 if (ref[n] != '.') {
|
|
|
604 continue;
|
|
|
605 }
|
|
|
606
|
|
|
607 if (ngx_strncmp(&ref[n], refs[i].name.data,
|
|
|
608 refs[i].name.len) == 0)
|
|
|
609 {
|
|
|
610 *e->sp = (uintptr_t) 0;
|
|
|
611 return;
|
|
|
612 }
|
|
|
613 }
|
|
|
614
|
|
|
615 } else {
|
|
|
616 if (ngx_strncasecmp(refs[i].name.data, ref, refs[i].name.len) == 0)
|
|
|
617 {
|
|
|
618 *e->sp = (uintptr_t) 0;
|
|
|
619 return;
|
|
|
620 }
|
|
|
621 }
|
|
|
622 }
|
|
0
|
623
|
|
34
|
624 *e->sp = (uintptr_t) 1;
|
|
|
625 }
|
|
|
626
|
|
|
627
|
|
|
628 static void ngx_http_rewrite_nop_code(ngx_http_rewrite_engine_t *e)
|
|
|
629 {
|
|
|
630 e->ip += sizeof(uintptr_t);
|
|
0
|
631 }
|
|
|
632
|
|
|
633
|
|
34
|
634 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle)
|
|
|
635 {
|
|
|
636 ngx_http_handler_pt *h;
|
|
|
637 ngx_http_core_main_conf_t *cmcf;
|
|
|
638
|
|
|
639 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
|
|
|
640
|
|
|
641 h = ngx_push_array(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
|
|
|
642 if (h == NULL) {
|
|
|
643 return NGX_ERROR;
|
|
|
644 }
|
|
|
645
|
|
|
646 *h = ngx_http_rewrite_handler;
|
|
|
647
|
|
|
648 return NGX_OK;
|
|
|
649 }
|
|
|
650
|
|
|
651
|
|
0
|
652 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
|
|
|
653 {
|
|
|
654 ngx_http_rewrite_loc_conf_t *conf;
|
|
|
655
|
|
|
656 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)))) {
|
|
|
657 return NGX_CONF_ERROR;
|
|
|
658 }
|
|
|
659
|
|
34
|
660 conf->stack_size = NGX_CONF_UNSET_UINT;
|
|
|
661 conf->log = NGX_CONF_UNSET;
|
|
|
662 conf->no_referer = NGX_CONF_UNSET;
|
|
|
663
|
|
0
|
664 return conf;
|
|
|
665 }
|
|
|
666
|
|
|
667
|
|
34
|
668 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
|
|
|
669 void *parent, void *child)
|
|
0
|
670 {
|
|
34
|
671 ngx_http_rewrite_loc_conf_t *prev = parent;
|
|
|
672 ngx_http_rewrite_loc_conf_t *conf = child;
|
|
|
673
|
|
|
674 uintptr_t *code, *last;
|
|
|
675 ngx_http_rewrite_regex_code_t *regex;
|
|
|
676
|
|
|
677 ngx_conf_merge_value(conf->log, prev->log, 0);
|
|
|
678 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10);
|
|
|
679
|
|
|
680 if (conf->referers == NULL) {
|
|
|
681 conf->referers = prev->referers;
|
|
|
682 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0);
|
|
|
683 }
|
|
|
684
|
|
|
685 if (conf->codes == NULL) {
|
|
|
686 return NGX_CONF_OK;
|
|
|
687 }
|
|
|
688
|
|
|
689 if (conf->codes == prev->codes) {
|
|
|
690 return NGX_CONF_OK;
|
|
|
691 }
|
|
|
692
|
|
|
693 code = conf->codes->elts;
|
|
|
694 last = (uintptr_t *) ((u_char *) code + conf->codes->nelts);
|
|
0
|
695
|
|
34
|
696 while (code < last) {
|
|
|
697 if (*code == (uintptr_t) NULL) {
|
|
|
698 return NGX_CONF_OK;
|
|
|
699 }
|
|
|
700
|
|
|
701 if (*code == (uintptr_t) &ngx_http_rewrite_regex_start_code) {
|
|
|
702 regex = (ngx_http_rewrite_regex_code_t *) code;
|
|
|
703 if (conf->max_captures < regex->ncaptures) {
|
|
|
704 conf->max_captures = regex->ncaptures;
|
|
|
705 }
|
|
|
706 code = (uintptr_t *) ((u_char *) code + regex->next);
|
|
|
707 }
|
|
|
708
|
|
|
709 if (*code == (uintptr_t) &ngx_http_rewrite_if_code) {
|
|
|
710 code += sizeof(ngx_http_rewrite_if_code_t) / sizeof(uintptr_t);
|
|
|
711 }
|
|
0
|
712
|
|
34
|
713 if (*code == (uintptr_t) &ngx_http_rewrite_return_code) {
|
|
|
714 code += sizeof(ngx_http_rewrite_return_code_t) / sizeof(uintptr_t);
|
|
|
715 }
|
|
|
716
|
|
|
717 if (*code == (uintptr_t) &ngx_http_rewrite_var_code) {
|
|
|
718 code += sizeof(ngx_http_rewrite_var_code_t) / sizeof(uintptr_t);
|
|
|
719 }
|
|
|
720
|
|
|
721 if (*code == (uintptr_t) &ngx_http_rewrite_invalid_referer_code) {
|
|
|
722 code++;
|
|
|
723 }
|
|
|
724
|
|
|
725 if (*code == (uintptr_t) &ngx_http_rewrite_nop_code) {
|
|
|
726 code++;
|
|
|
727 }
|
|
|
728 }
|
|
|
729
|
|
|
730 if (!(code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)))) {
|
|
0
|
731 return NGX_CONF_ERROR;
|
|
|
732 }
|
|
|
733
|
|
34
|
734 *code = (uintptr_t) NULL;
|
|
|
735
|
|
|
736 return NGX_CONF_OK;
|
|
|
737 }
|
|
|
738
|
|
0
|
739
|
|
34
|
740 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
741 {
|
|
|
742 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
743
|
|
|
744 u_char *data;
|
|
|
745 size_t len, size;
|
|
|
746 ngx_str_t *value, err;
|
|
|
747 ngx_uint_t i, n, last;
|
|
|
748 ngx_http_rewrite_code_pt *code;
|
|
|
749 ngx_http_rewrite_copy_code_t *copy;
|
|
|
750 ngx_http_rewrite_regex_code_t *regex;
|
|
|
751 ngx_http_rewrite_regex_end_code_t *regex_end;
|
|
|
752 ngx_http_rewrite_copy_capture_code_t *copy_capture;
|
|
|
753 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
|
754
|
|
|
755 regex = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
756 sizeof(ngx_http_rewrite_regex_code_t));
|
|
|
757 if (regex == NULL) {
|
|
|
758 return NGX_CONF_ERROR;
|
|
|
759 }
|
|
0
|
760
|
|
|
761 value = cf->args->elts;
|
|
|
762
|
|
34
|
763 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
764 err.data = errstr;
|
|
|
765
|
|
|
766 /* TODO: NGX_REGEX_CASELESS */
|
|
|
767
|
|
|
768 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
|
|
|
769
|
|
|
770 if (regex->regex == NULL) {
|
|
|
771 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
772 return NGX_CONF_ERROR;
|
|
|
773 }
|
|
|
774
|
|
|
775 regex->code = ngx_http_rewrite_regex_start_code;
|
|
|
776 regex->size = 0;
|
|
|
777 regex->ncaptures = 0;
|
|
|
778 regex->status = 0;
|
|
|
779 regex->uri = 1;
|
|
|
780 regex->args = 1;
|
|
|
781 regex->redirect = 0;
|
|
|
782 regex->name = value[1];
|
|
0
|
783
|
|
34
|
784 last = 0;
|
|
|
785
|
|
|
786 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
|
|
|
787 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
788 regex->redirect = 1;
|
|
|
789 last = 1;
|
|
|
790 }
|
|
|
791
|
|
|
792 if (cf->args->nelts == 4) {
|
|
|
793 if (ngx_strcmp(value[3].data, "last") == 0) {
|
|
|
794 last = 1;
|
|
0
|
795
|
|
34
|
796 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
|
|
|
797 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
798 regex->redirect = 1;
|
|
|
799 last = 1;
|
|
0
|
800
|
|
34
|
801 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
|
|
|
802 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
|
|
|
803 regex->redirect = 1;
|
|
|
804 last = 1;
|
|
0
|
805
|
|
34
|
806 } else {
|
|
0
|
807 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
808 "invalid parameter \"%V\"", &value[3]);
|
|
0
|
809 return NGX_CONF_ERROR;
|
|
|
810 }
|
|
34
|
811 }
|
|
0
|
812
|
|
34
|
813 i = 0;
|
|
|
814
|
|
|
815 while (i < value[2].len) {
|
|
|
816
|
|
|
817 data = &value[2].data[i];
|
|
32
|
818
|
|
34
|
819 if (value[2].data[i] == '$' && i < value[2].len
|
|
|
820 && value[2].data[i + 1] >= '1' && value[2].data[i + 1] <= '9')
|
|
|
821 {
|
|
0
|
822
|
|
34
|
823 /* the "$1" - "$9" captures */
|
|
|
824
|
|
|
825 copy_capture = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
826 sizeof(ngx_http_rewrite_copy_capture_code_t),
|
|
|
827 (u_char **) ®ex);
|
|
|
828 if (copy_capture == NULL) {
|
|
0
|
829 return NGX_CONF_ERROR;
|
|
|
830 }
|
|
|
831
|
|
34
|
832 i++;
|
|
|
833
|
|
|
834 copy_capture->code = ngx_http_rewrite_copy_capture_code;
|
|
|
835 copy_capture->n = value[2].data[i] - '0';
|
|
|
836
|
|
|
837 if (regex->ncaptures < copy_capture->n) {
|
|
|
838 regex->ncaptures = copy_capture->n;
|
|
|
839 }
|
|
|
840
|
|
|
841 copy_capture->n *= 2;
|
|
|
842
|
|
|
843 i++;
|
|
|
844
|
|
|
845 continue;
|
|
|
846 }
|
|
0
|
847
|
|
34
|
848 if (value[2].data[i] == '?') {
|
|
|
849
|
|
|
850 /* the arguments */
|
|
0
|
851
|
|
34
|
852 if (i == value[2].len - 1) {
|
|
|
853 /* the last "?" drops the original arguments */
|
|
|
854 regex->args = 0;
|
|
|
855 break;
|
|
|
856 }
|
|
|
857
|
|
|
858 if (!regex->redirect) {
|
|
|
859 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
|
860 (u_char **) ®ex);
|
|
|
861 if (code == NULL) {
|
|
|
862 return NGX_CONF_ERROR;
|
|
0
|
863 }
|
|
|
864
|
|
34
|
865 *code = ngx_http_rewrite_start_args_code;
|
|
|
866
|
|
0
|
867 i++;
|
|
|
868
|
|
32
|
869 continue;
|
|
|
870 }
|
|
34
|
871 }
|
|
|
872
|
|
|
873 i++;
|
|
|
874
|
|
|
875 /* the substituion strings */
|
|
|
876
|
|
|
877 while (i < value[2].len && value[2].data[i] != '$') {
|
|
32
|
878
|
|
|
879 if (value[2].data[i] == '?') {
|
|
|
880
|
|
34
|
881 if (i == value[2].len - 1) {
|
|
|
882 /*
|
|
|
883 * the last "?" drops the original arguments,
|
|
|
884 * and it should not be copied to a substituion
|
|
|
885 */
|
|
|
886 regex->args = 0;
|
|
|
887 break;
|
|
|
888 }
|
|
0
|
889
|
|
34
|
890 if (!regex->redirect) {
|
|
|
891 break;
|
|
|
892 }
|
|
32
|
893 }
|
|
0
|
894
|
|
32
|
895 i++;
|
|
34
|
896 }
|
|
0
|
897
|
|
34
|
898 len = &value[2].data[i] - data;
|
|
0
|
899
|
|
34
|
900 if (len == 0) {
|
|
|
901 continue;
|
|
0
|
902 }
|
|
|
903
|
|
34
|
904 regex->size += len;
|
|
|
905
|
|
|
906 size = (len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1);
|
|
30
|
907
|
|
34
|
908 copy = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
909 sizeof(ngx_http_rewrite_copy_code_t) + size,
|
|
|
910 (u_char **) ®ex);
|
|
|
911 if (copy == NULL) {
|
|
30
|
912 return NGX_CONF_ERROR;
|
|
|
913 }
|
|
|
914
|
|
34
|
915 copy->code = ngx_http_rewrite_copy_code;
|
|
|
916 copy->len = len;
|
|
|
917
|
|
|
918 ngx_memcpy((u_char *) copy + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
919 data, len);
|
|
|
920 }
|
|
|
921
|
|
|
922 n = ngx_regex_capture_count(regex->regex);
|
|
|
923
|
|
|
924 if (regex->ncaptures > n) {
|
|
|
925 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
926 "pattern \"%V\" has less captures "
|
|
|
927 "than referrenced in substitution \"%V\"",
|
|
|
928 &value[1], &value[2]);
|
|
|
929 return NGX_CONF_ERROR;
|
|
|
930 }
|
|
|
931
|
|
|
932 if (regex->ncaptures < n) {
|
|
|
933 regex->ncaptures = n;
|
|
|
934 }
|
|
30
|
935
|
|
34
|
936 if (regex->ncaptures) {
|
|
|
937 regex->ncaptures = (regex->ncaptures + 1) * 3;
|
|
|
938 }
|
|
|
939
|
|
|
940 regex_end = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
941 sizeof(ngx_http_rewrite_regex_end_code_t),
|
|
|
942 (u_char **) ®ex);
|
|
|
943 if (regex_end == NULL) {
|
|
|
944 return NGX_CONF_ERROR;
|
|
|
945 }
|
|
|
946
|
|
|
947 regex_end->code = ngx_http_rewrite_regex_end_code;
|
|
|
948 regex_end->uri = regex->uri;
|
|
|
949 regex_end->args = regex->args;
|
|
|
950 regex_end->redirect = regex->redirect;
|
|
|
951
|
|
|
952 if (last) {
|
|
|
953 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
|
954 (u_char **) ®ex);
|
|
|
955 if (code == NULL) {
|
|
|
956 return NGX_CONF_ERROR;
|
|
0
|
957 }
|
|
|
958
|
|
34
|
959 *code = (uintptr_t) NULL;
|
|
|
960 }
|
|
|
961
|
|
|
962 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
963 - (u_char *) regex;
|
|
|
964
|
|
|
965 return NGX_CONF_OK;
|
|
|
966 }
|
|
|
967
|
|
|
968
|
|
|
969
|
|
|
970 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
971 void *conf)
|
|
|
972 {
|
|
|
973 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
0
|
974
|
|
34
|
975 ngx_str_t *value;
|
|
|
976 ngx_http_rewrite_return_code_t *ret;
|
|
|
977
|
|
|
978 ret = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
979 sizeof(ngx_http_rewrite_return_code_t));
|
|
|
980 if (ret == NULL) {
|
|
|
981 return NGX_CONF_ERROR;
|
|
|
982 }
|
|
|
983
|
|
|
984 value = cf->args->elts;
|
|
|
985
|
|
|
986 ret->code = ngx_http_rewrite_return_code;
|
|
|
987 ret->null = (uintptr_t) NULL;
|
|
|
988
|
|
|
989 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
|
990
|
|
|
991 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
|
992 return NGX_CONF_ERROR;
|
|
0
|
993 }
|
|
|
994
|
|
|
995 return NGX_CONF_OK;
|
|
|
996 }
|
|
|
997
|
|
|
998
|
|
34
|
999 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1000 {
|
|
34
|
1001 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1002
|
|
|
1003 void *mconf;
|
|
|
1004 char *rv;
|
|
|
1005 u_char *elts;
|
|
|
1006 ngx_str_t *value;
|
|
|
1007 ngx_uint_t i;
|
|
|
1008 ngx_conf_t save;
|
|
|
1009 ngx_http_rewrite_code_pt *code;
|
|
|
1010 ngx_http_module_t *module;
|
|
|
1011 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
|
1012 ngx_http_variable_t *var;
|
|
|
1013 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp;
|
|
|
1014 ngx_http_core_main_conf_t *cmcf;
|
|
|
1015 ngx_http_rewrite_if_code_t *if_code;
|
|
|
1016 ngx_http_rewrite_var_code_t *var_code;
|
|
|
1017 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
|
1018
|
|
|
1019 if (!(ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)))) {
|
|
|
1020 return NGX_CONF_ERROR;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 pctx = cf->ctx;
|
|
|
1024 ctx->main_conf = pctx->main_conf;
|
|
|
1025 ctx->srv_conf = pctx->srv_conf;
|
|
|
1026
|
|
|
1027 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
1028 if (ctx->loc_conf == NULL) {
|
|
|
1029 return NGX_CONF_ERROR;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 for (i = 0; ngx_modules[i]; i++) {
|
|
|
1033 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
|
1034 continue;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 module = ngx_modules[i]->ctx;
|
|
|
1038
|
|
|
1039 if (module->create_loc_conf) {
|
|
|
1040
|
|
|
1041 if (!(mconf = module->create_loc_conf(cf))) {
|
|
|
1042 return NGX_CONF_ERROR;
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
|
1046 }
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1050
|
|
|
1051 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1052 clcf->loc_conf = ctx->loc_conf;
|
|
|
1053 clcf->name = pclcf->name;
|
|
|
1054 clcf->noname = 1;
|
|
|
1055
|
|
|
1056 if (pclcf->locations.elts == NULL) {
|
|
|
1057 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *))
|
|
|
1058 == NGX_ERROR)
|
|
|
1059 {
|
|
|
1060 return NGX_CONF_ERROR;
|
|
|
1061 }
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 if (!(clcfp = ngx_push_array(&pclcf->locations))) {
|
|
|
1065 return NGX_CONF_ERROR;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 *clcfp = clcf;
|
|
|
1069
|
|
|
1070
|
|
|
1071 /* STUB: "if ($var)" */
|
|
|
1072
|
|
|
1073 value = cf->args->elts;
|
|
|
1074
|
|
|
1075 if (value[1].len < 2
|
|
|
1076 || value[1].data[0] != '('
|
|
|
1077 || value[1].data[1] != '$'
|
|
|
1078 || value[1].data[value[1].len - 1] != ')')
|
|
|
1079 {
|
|
|
1080 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1081 "invalid condition \"%V\"", &value[1]);
|
|
|
1082 return NGX_CONF_ERROR;
|
|
|
1083 }
|
|
|
1084
|
|
|
1085 value[1].len -= 3;
|
|
|
1086 value[1].data += 2;
|
|
0
|
1087
|
|
34
|
1088 if (value[1].len == sizeof("invalid_referer") - 1
|
|
|
1089 && ngx_strncmp(value[1].data, "invalid_referer",
|
|
|
1090 sizeof("invalid_referer") - 1) == 0)
|
|
|
1091 {
|
|
|
1092 code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1093 sizeof(ngx_http_rewrite_code_pt));
|
|
|
1094 if (code == NULL) {
|
|
|
1095 return NGX_CONF_ERROR;
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 *code = ngx_http_rewrite_invalid_referer_code;
|
|
|
1099
|
|
|
1100 } else {
|
|
|
1101
|
|
|
1102 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
1103
|
|
|
1104 var = cmcf->variables.elts;
|
|
|
1105 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
1106 if (var[i].name.len != value[1].len) {
|
|
|
1107 continue;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 if (ngx_strncasecmp(var[i].name.data, value[1].data,
|
|
|
1111 var[i].name.len) == 0)
|
|
|
1112 {
|
|
|
1113 break;
|
|
|
1114 }
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 if (i == cmcf->variables.nelts) {
|
|
|
1118 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1119 "unknown variable name \"%V\"", &value[1]);
|
|
|
1120 return NGX_CONF_ERROR;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 var_code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1124 sizeof(ngx_http_rewrite_var_code_t));
|
|
|
1125 if (var_code == NULL) {
|
|
|
1126 return NGX_CONF_ERROR;
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 var_code->code = ngx_http_rewrite_var_code;
|
|
|
1130 var_code->index = var[i].index;
|
|
|
1131 }
|
|
|
1132
|
|
|
1133 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_rewrite_if_code_t));
|
|
|
1134 if (if_code == NULL) {
|
|
|
1135 return NULL;
|
|
|
1136 }
|
|
|
1137
|
|
|
1138 if_code->code = ngx_http_rewrite_if_code;
|
|
|
1139
|
|
|
1140 elts = lcf->codes->elts;
|
|
|
1141
|
|
|
1142
|
|
|
1143 /* the inside directives must compile to the same code array */
|
|
|
1144
|
|
|
1145 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
|
1146 nlcf->codes = lcf->codes;
|
|
|
1147
|
|
|
1148
|
|
|
1149 save = *cf;
|
|
|
1150 cf->ctx = ctx;
|
|
|
1151
|
|
|
1152 if (pclcf->name.len == 0) {
|
|
|
1153 if_code->loc_conf = NULL;
|
|
|
1154 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
|
1155
|
|
|
1156 } else {
|
|
|
1157 if_code->loc_conf = ctx->loc_conf;
|
|
|
1158 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
|
1159 }
|
|
|
1160
|
|
|
1161 rv = ngx_conf_parse(cf, NULL);
|
|
|
1162
|
|
|
1163 *cf = save;
|
|
|
1164
|
|
|
1165 if (rv != NGX_CONF_OK) {
|
|
|
1166 return rv;
|
|
|
1167 }
|
|
|
1168
|
|
|
1169
|
|
|
1170 if (elts != lcf->codes->elts) {
|
|
|
1171 if_code = (ngx_http_rewrite_if_code_t *)
|
|
|
1172 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
1176 - (u_char *) if_code;
|
|
0
|
1177
|
|
|
1178 return NGX_CONF_OK;
|
|
|
1179 }
|
|
|
1180
|
|
|
1181
|
|
34
|
1182 static char *ngx_http_rewrite_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1183 void *conf)
|
|
0
|
1184 {
|
|
34
|
1185 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
0
|
1186
|
|
34
|
1187 ngx_uint_t i, server_names;
|
|
|
1188 ngx_str_t *value;
|
|
|
1189 ngx_http_server_name_t *sn;
|
|
|
1190 ngx_http_core_srv_conf_t *cscf;
|
|
|
1191 ngx_http_rewrite_referer_t *ref;
|
|
|
1192
|
|
|
1193 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module);
|
|
0
|
1194
|
|
34
|
1195 if (lcf->referers == NULL) {
|
|
|
1196 lcf->referers = ngx_array_create(cf->pool,
|
|
|
1197 cf->args->nelts + cscf->server_names.nelts,
|
|
|
1198 sizeof(ngx_http_rewrite_referer_t));
|
|
|
1199 if (lcf->referers == NULL) {
|
|
|
1200 return NGX_CONF_ERROR;
|
|
|
1201 }
|
|
0
|
1202 }
|
|
|
1203
|
|
34
|
1204 value = cf->args->elts;
|
|
|
1205 server_names = 0;
|
|
|
1206
|
|
|
1207 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1208 if (value[i].len == 0) {
|
|
|
1209 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1210 "invalid referer \"%V\"", &value[i]);
|
|
|
1211 return NGX_CONF_ERROR;
|
|
|
1212 }
|
|
|
1213
|
|
|
1214 if (ngx_strcmp(value[i].data, "none") == 0) {
|
|
|
1215 lcf->no_referer = 1;
|
|
|
1216 continue;
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 if (ngx_strcmp(value[i].data, "server_names") == 0) {
|
|
|
1220 server_names = 1;
|
|
|
1221 continue;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 if (!(ref = ngx_array_push(lcf->referers))) {
|
|
|
1225 return NGX_CONF_ERROR;
|
|
|
1226 }
|
|
|
1227
|
|
|
1228 if (value[i].data[0] != '*') {
|
|
|
1229 ref->name = value[i];
|
|
|
1230 ref->wildcard = 0;
|
|
|
1231 continue;
|
|
|
1232 }
|
|
|
1233
|
|
|
1234 if (value[i].data[1] != '.') {
|
|
|
1235 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1236 "invalid wildcard referer \"%V\"", &value[i]);
|
|
|
1237 return NGX_CONF_ERROR;
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 ref->name.len = value[i].len - 1;
|
|
|
1241 ref->name.data = value[i].data + 1;
|
|
|
1242 ref->wildcard = 1;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 if (!server_names) {
|
|
|
1246 return NGX_CONF_OK;
|
|
|
1247 }
|
|
0
|
1248
|
|
34
|
1249 sn = cscf->server_names.elts;
|
|
|
1250 for (i = 0; i < cscf->server_names.nelts; i++) {
|
|
|
1251 if (!(ref = ngx_array_push(lcf->referers))) {
|
|
|
1252 return NGX_CONF_ERROR;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 ref->name.len = sn[i].name.len + 1;
|
|
|
1256 if (!(ref->name.data = ngx_palloc(cf->pool, ref->name.len))) {
|
|
|
1257 return NGX_CONF_ERROR;
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 ngx_memcpy(ref->name.data, sn[i].name.data, sn[i].name.len);
|
|
|
1261 ref->name.data[sn[i].name.len] = '/';
|
|
|
1262 ref->wildcard = sn[i].wildcard;
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 return NGX_CONF_OK;
|
|
0
|
1266 }
|
|
34
|
1267
|
|
|
1268
|
|
|
1269 static void *ngx_http_rewrite_start_code(ngx_pool_t *pool,
|
|
|
1270 ngx_array_t **codes, size_t size)
|
|
|
1271 {
|
|
|
1272 if (*codes == NULL) {
|
|
|
1273 if (!(*codes = ngx_array_create(pool, 256, 1))) {
|
|
|
1274 return NULL;
|
|
|
1275 }
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 return ngx_array_push_n(*codes, size);
|
|
|
1279 }
|
|
|
1280
|
|
|
1281
|
|
|
1282 static void *ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size,
|
|
|
1283 u_char **main)
|
|
|
1284 {
|
|
|
1285 u_char *elts;
|
|
|
1286 void *new;
|
|
|
1287
|
|
|
1288 elts = codes->elts;
|
|
|
1289
|
|
|
1290 if (!(new = ngx_array_push_n(codes, size))) {
|
|
|
1291 return NGX_CONF_ERROR;
|
|
|
1292 }
|
|
|
1293
|
|
|
1294 if (elts != codes->elts) {
|
|
|
1295 *main += (u_char *) codes->elts - elts;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298 return new;
|
|
|
1299 }
|
