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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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36
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50 uintptr_t break_cycle:1;
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34
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51
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52 ngx_str_t name;
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53 } ngx_http_rewrite_regex_code_t;
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54
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55
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56 typedef struct {
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57 ngx_http_rewrite_code_pt code;
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58
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59 uintptr_t uri:1;
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60
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61 /* add the r->args to the new arguments */
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62 uintptr_t args:1;
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63
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64 uintptr_t redirect:1;
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65 } ngx_http_rewrite_regex_end_code_t;
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66
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67 typedef struct {
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68 ngx_http_rewrite_code_pt code;
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69 uintptr_t n;
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70 } ngx_http_rewrite_copy_capture_code_t;
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0
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71
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72
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73 typedef struct {
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34
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74 ngx_http_rewrite_code_pt code;
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75 uintptr_t len;
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76 } ngx_http_rewrite_copy_code_t;
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0
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77
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78
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34
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79 typedef struct {
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80 ngx_http_rewrite_code_pt code;
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81 uintptr_t status;
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82 uintptr_t null;
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83 } ngx_http_rewrite_return_code_t;
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0
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84
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34
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85
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86 typedef struct {
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87 ngx_http_rewrite_code_pt code;
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88 uintptr_t next;
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89 void **loc_conf;
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90 } ngx_http_rewrite_if_code_t;
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0
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91
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92
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93 typedef struct {
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34
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94 ngx_http_rewrite_code_pt code;
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95 uintptr_t index;
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96 } ngx_http_rewrite_var_code_t;
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0
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97
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98
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34
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99 struct ngx_http_rewrite_engine_s {
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100 u_char *ip;
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101 uintptr_t *sp;
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102
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103 ngx_str_t buf;
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104 ngx_str_t *line;
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105
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106 u_char *pos;
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107
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108 /* the start of the rewritten arguments */
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109 u_char *args;
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110
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111 unsigned quote:1;
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112
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113 ngx_int_t status;
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114
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115 int *captures;
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116
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117 ngx_http_request_t *request;
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118 ngx_http_rewrite_loc_conf_t *conf;
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119 };
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0
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120
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121
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34
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122 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle);
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123 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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124 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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36
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125 void *parent, void *child);
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34
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126 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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127 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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36
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128 void *conf);
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34
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129 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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36
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130 void *conf);
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131 static char *ngx_http_rewrite_valid_referers(ngx_conf_t *cf,
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132 ngx_command_t *cmd, void *conf);
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34
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133 static void *ngx_http_rewrite_start_code(ngx_pool_t *pool,
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36
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134 ngx_array_t **codes, size_t size);
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34
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135 static void *ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size,
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36
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136 void *code);
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0
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137
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138
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139 static ngx_command_t ngx_http_rewrite_commands[] = {
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140
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141 { ngx_string("rewrite"),
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34
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142 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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143 |NGX_CONF_TAKE23,
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144 ngx_http_rewrite,
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145 NGX_HTTP_LOC_CONF_OFFSET,
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146 0,
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147 NULL },
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148
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149 { ngx_string("return"),
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150 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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151 |NGX_CONF_TAKE1,
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152 ngx_http_rewrite_return,
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153 NGX_HTTP_LOC_CONF_OFFSET,
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0
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154 0,
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155 NULL },
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156
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34
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157 { ngx_string("if"),
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158 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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159 ngx_http_rewrite_if,
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0
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160 NGX_HTTP_LOC_CONF_OFFSET,
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161 0,
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34
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162 NULL },
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163
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164 { ngx_string("valid_referers"),
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165 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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166 ngx_http_rewrite_valid_referers,
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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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0
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170
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171 { ngx_string("rewrite_log"),
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34
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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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0
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174 ngx_conf_set_flag_slot,
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34
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175 NGX_HTTP_LOC_CONF_OFFSET,
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176 offsetof(ngx_http_rewrite_loc_conf_t, log),
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0
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177 NULL },
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178
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179 ngx_null_command
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180 };
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181
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182
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183 ngx_http_module_t ngx_http_rewrite_module_ctx = {
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184 NULL, /* pre conf */
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185
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186 NULL, /* create main configuration */
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187 NULL, /* init main configuration */
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188
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34
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189 NULL, /* create server configuration */
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190 NULL, /* merge server configuration */
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0
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191
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192 ngx_http_rewrite_create_loc_conf, /* create location configration */
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34
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193 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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0
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194 };
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195
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196
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197 ngx_module_t ngx_http_rewrite_module = {
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198 NGX_MODULE,
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34
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199 &ngx_http_rewrite_module_ctx, /* module context */
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0
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200 ngx_http_rewrite_commands, /* module directives */
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201 NGX_HTTP_MODULE, /* module type */
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202 ngx_http_rewrite_init, /* init module */
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203 NULL /* init process */
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0
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204 };
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205
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206
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34
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207 #define ngx_http_rewrite_exit (u_char *) &ngx_http_rewrite_exit_code
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208
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209 uintptr_t ngx_http_rewrite_exit_code = (uintptr_t) NULL;
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210
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211
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36
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212 static ngx_int_t
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213 ngx_http_rewrite_handler(ngx_http_request_t *r)
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0
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214 {
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215 ngx_http_rewrite_code_pt code;
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216 ngx_http_rewrite_engine_t *e;
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217 ngx_http_rewrite_loc_conf_t *cf;
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218
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34
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219 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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220
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34
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221 if (cf->codes == NULL) {
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222 return NGX_DECLINED;
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223 }
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0
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224
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34
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225 if (!(e = ngx_palloc(r->pool, sizeof(ngx_http_rewrite_engine_t)))) {
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226 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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227 }
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0
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228
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34
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229 e->sp = ngx_palloc(r->pool, cf->stack_size * sizeof(ngx_int_t));
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230 if (e->sp == NULL) {
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231 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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232 }
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0
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233
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34
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234 if (cf->max_captures) {
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235 e->captures = ngx_palloc(r->pool, cf->max_captures * sizeof(int));
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236 if (e->captures == NULL) {
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0
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237 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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238 }
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239
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34
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240 } else {
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241 e->captures = NULL;
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242 }
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243
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244 e->ip = cf->codes->elts;
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245 e->buf.len = 0;
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246 e->buf.data = NULL;
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247 e->line = NULL;
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248 e->pos = NULL;
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249 e->args = NULL;
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250 e->quote = 1;
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251 e->status = NGX_DECLINED;
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252 e->request = r;
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253 e->conf = cf;
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254
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255 while (*(uintptr_t *) e->ip) {
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256 code = *(ngx_http_rewrite_code_pt *) e->ip;
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257 code(e);
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258 }
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259
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260 return e->status;
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261 }
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262
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263
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36
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264 static void
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265 ngx_http_rewrite_regex_start_code(ngx_http_rewrite_engine_t *e)
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34
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266 {
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267 ngx_int_t rc;
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268 ngx_uint_t n;
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269 ngx_http_request_t *r;
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270 ngx_http_rewrite_regex_code_t *code;
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271
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272 code = (ngx_http_rewrite_regex_code_t *) e->ip;
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273
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274 r = e->request;
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275
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276 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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277 "http rewrite start: \"%V\"", &code->name);
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278
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279 if (code->uri) {
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280 e->line = &r->uri;
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281 } else {
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282 e->line = *(ngx_str_t **) e->sp--;
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283 }
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284
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285 rc = ngx_regex_exec(code->regex, e->line, e->captures, code->ncaptures);
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286
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287 if (rc == NGX_REGEX_NO_MATCHED) {
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288 if (e->conf->log) {
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289 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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290 "\"%V\" does not match \"%V\"", &code->name, e->line);
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291 }
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292
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293 e->ip += code->next;
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294 return;
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295 }
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296
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297 if (rc < 0) {
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298 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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299 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
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300 rc, e->line, &code->name);
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301
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302 e->ip = ngx_http_rewrite_exit;
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303 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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304 return;
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305 }
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306
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307 if (e->conf->log) {
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308 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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309 "\"%V\" matches \"%V\"", &code->name, e->line);
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310 }
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311
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312 if (code->status) {
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313 e->status = code->status;
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314
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315 if (!code->redirect) {
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316 e->ip = ngx_http_rewrite_exit;
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317 return;
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318 }
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319 }
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320
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321 e->buf.len = code->size;
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0
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322
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34
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323 if (code->uri) {
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36
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324 if (!code->break_cycle) {
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325 r->uri_changed = 1;
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326 }
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34
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327
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328 if (rc && (r->quoted_uri || r->plus_in_uri)) {
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329 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
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330 NGX_ESCAPE_ARGS);
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331 }
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332 }
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333
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334 for (n = 1; n < (ngx_uint_t) rc; n++) {
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335 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n];
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336 }
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337
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338 if (code->args && r->args.len) {
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339 e->buf.len += r->args.len + 1;
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340 }
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341
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342 if (!(e->buf.data = ngx_palloc(r->pool, e->buf.len))) {
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343 e->ip = ngx_http_rewrite_exit;
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344 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
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345 return;
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346 }
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347
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348 e->quote = code->redirect;
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349
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350 e->pos = e->buf.data;
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351
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352 e->ip += sizeof(ngx_http_rewrite_regex_code_t);
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353 }
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354
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355
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36
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356 static void
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357 ngx_http_rewrite_regex_end_code(ngx_http_rewrite_engine_t *e)
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34
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358 {
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359 ngx_http_request_t *r;
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360 ngx_http_rewrite_regex_end_code_t *code;
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361
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362 code = (ngx_http_rewrite_regex_end_code_t *) e->ip;
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363
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364 r = e->request;
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0
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365
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34
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366 e->quote = 0;
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367
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368 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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369 "http rewrite end");
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370
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371 if (e->args) {
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372 e->buf.len = e->args - e->buf.data;
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373
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374 if (code->args && r->args.len) {
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375 *e->pos++ = '&';
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376 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
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377 }
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378
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379 r->args.len = e->pos - e->args;
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380 r->args.data = e->args;
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381
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382 e->args = NULL;
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0
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383
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34
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384 } else {
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385 if (code->args && r->args.len) {
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36
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386 *e->pos++ = '?';
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34
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387 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len);
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388 }
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389
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390 e->buf.len = e->pos - e->buf.data;
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391 }
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32
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392
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34
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393 if (!code->redirect) {
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394 if (e->conf->log) {
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395 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
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396 "rewritten data: \"%V\", args: \"%V\"",
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397 &e->buf, &r->args);
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398 }
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|
|
399
|
|
|
400 if (code->uri) {
|
|
|
401 r->uri = e->buf;
|
|
|
402
|
|
|
403 if (ngx_http_set_exten(r) != NGX_OK) {
|
|
|
404 e->ip = ngx_http_rewrite_exit;
|
|
|
405 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
406 return;
|
|
0
|
407 }
|
|
|
408 }
|
|
|
409
|
|
34
|
410 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
411 return;
|
|
0
|
412 }
|
|
|
413
|
|
34
|
414 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
|
|
|
415 "rewritten redirect: \"%V\"", &e->buf);
|
|
0
|
416
|
|
34
|
417 if (!(r->headers_out.location = ngx_list_push(&r->headers_out.headers))) {
|
|
|
418 e->ip = ngx_http_rewrite_exit;
|
|
|
419 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
420 return;
|
|
0
|
421 }
|
|
|
422
|
|
34
|
423 if (e->buf.data[0] != '/') {
|
|
0
|
424 r->headers_out.location->key.len = sizeof("Location") - 1;
|
|
|
425 r->headers_out.location->key.data = (u_char *) "Location";
|
|
|
426 }
|
|
|
427
|
|
34
|
428 r->headers_out.location->value = e->buf;
|
|
|
429
|
|
|
430 e->ip += sizeof(ngx_http_rewrite_regex_end_code_t);
|
|
|
431 }
|
|
|
432
|
|
|
433
|
|
36
|
434 static void
|
|
|
435 ngx_http_rewrite_copy_capture_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
436 {
|
|
|
437 ngx_http_rewrite_copy_capture_code_t *code;
|
|
|
438
|
|
|
439 code = (ngx_http_rewrite_copy_capture_code_t *) e->ip;
|
|
0
|
440
|
|
34
|
441 e->ip += sizeof(ngx_http_rewrite_copy_capture_code_t);
|
|
|
442
|
|
|
443 if ((e->args || e->quote)
|
|
|
444 && (e->request->quoted_uri || e->request->plus_in_uri))
|
|
|
445 {
|
|
|
446 e->pos = (u_char *) ngx_escape_uri(e->pos,
|
|
|
447 &e->line->data[e->captures[code->n]],
|
|
|
448 e->captures[code->n + 1] - e->captures[code->n],
|
|
|
449 NGX_ESCAPE_ARGS);
|
|
|
450 } else {
|
|
|
451 e->pos = ngx_cpymem(e->pos, &e->line->data[e->captures[code->n]],
|
|
|
452 e->captures[code->n + 1] - e->captures[code->n]);
|
|
0
|
453 }
|
|
|
454
|
|
34
|
455 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
456 "http rewrite capture: \"%V\"", &e->buf);
|
|
|
457 }
|
|
|
458
|
|
|
459
|
|
36
|
460 static void
|
|
|
461 ngx_http_rewrite_copy_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
462 {
|
|
|
463 ngx_http_rewrite_copy_code_t *code;
|
|
|
464
|
|
|
465 code = (ngx_http_rewrite_copy_code_t *) e->ip;
|
|
|
466
|
|
|
467 e->pos = ngx_cpymem(e->pos, e->ip + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
468 code->len);
|
|
|
469
|
|
|
470 e->ip += sizeof(ngx_http_rewrite_copy_code_t)
|
|
|
471 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
|
|
|
472
|
|
|
473 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
474 "http rewrite copy: \"%V\"", &e->buf);
|
|
|
475 }
|
|
|
476
|
|
|
477
|
|
36
|
478 static void
|
|
|
479 ngx_http_rewrite_start_args_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
480 {
|
|
|
481 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
482 "http rewrite args");
|
|
|
483
|
|
|
484 e->args = e->pos;
|
|
|
485 e->ip += sizeof(uintptr_t);
|
|
|
486 }
|
|
|
487
|
|
0
|
488
|
|
36
|
489 static void
|
|
|
490 ngx_http_rewrite_return_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
491 {
|
|
|
492 ngx_http_rewrite_return_code_t *code;
|
|
|
493
|
|
|
494 code = (ngx_http_rewrite_return_code_t *) e->ip;
|
|
|
495
|
|
|
496 e->status = code->status;
|
|
|
497
|
|
|
498 e->ip += sizeof(ngx_http_rewrite_return_code_t) - sizeof(uintptr_t);
|
|
|
499 }
|
|
|
500
|
|
|
501
|
|
36
|
502 static void
|
|
|
503 ngx_http_rewrite_if_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
504 {
|
|
|
505 ngx_http_rewrite_if_code_t *code;
|
|
|
506
|
|
|
507 code = (ngx_http_rewrite_if_code_t *) e->ip;
|
|
|
508
|
|
|
509 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
510 "http rewrite if");
|
|
|
511
|
|
|
512 if (*e->sp--) {
|
|
|
513 if (code->loc_conf) {
|
|
|
514 e->request->loc_conf = code->loc_conf;
|
|
|
515 }
|
|
|
516
|
|
|
517 e->ip += sizeof(ngx_http_rewrite_if_code_t);
|
|
|
518 return;
|
|
|
519 }
|
|
|
520
|
|
|
521 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
522 "http rewrite if false");
|
|
|
523
|
|
|
524 e->ip += code->next;
|
|
0
|
525 }
|
|
|
526
|
|
|
527
|
|
36
|
528 static void
|
|
|
529 ngx_http_rewrite_var_code(ngx_http_rewrite_engine_t *e)
|
|
0
|
530 {
|
|
34
|
531 ngx_http_variable_value_t *value;
|
|
|
532 ngx_http_rewrite_var_code_t *code;
|
|
|
533
|
|
|
534 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
535 "http rewrite var");
|
|
|
536
|
|
|
537 code = (ngx_http_rewrite_var_code_t *) e->ip;
|
|
0
|
538
|
|
34
|
539 e->sp++;
|
|
|
540
|
|
|
541 e->ip += sizeof(ngx_http_rewrite_var_code_t);
|
|
|
542
|
|
48
|
543 if (!(value = ngx_http_get_indexed_variable(e->request, code->index))) {
|
|
34
|
544 *e->sp = (uintptr_t) 0;
|
|
|
545 return;
|
|
0
|
546 }
|
|
|
547
|
|
34
|
548 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
|
|
|
549 "http rewrite var: %p", value->value);
|
|
0
|
550
|
|
34
|
551 *e->sp = value->value;
|
|
0
|
552 }
|
|
|
553
|
|
|
554
|
|
36
|
555 static void
|
|
|
556 ngx_http_rewrite_invalid_referer_code(ngx_http_rewrite_engine_t *e)
|
|
0
|
557 {
|
|
34
|
558 u_char *ref;
|
|
|
559 size_t len;
|
|
|
560 ngx_uint_t i, n;
|
|
|
561 ngx_http_request_t *r;
|
|
|
562 ngx_http_rewrite_referer_t *refs;
|
|
|
563 ngx_http_rewrite_loc_conf_t *cf;
|
|
|
564
|
|
|
565 r = e->request;
|
|
|
566
|
|
|
567 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
568 "http rewrite invalid referer");
|
|
|
569
|
|
|
570 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
|
|
|
571
|
|
|
572 e->sp++;
|
|
|
573 e->ip += sizeof(uintptr_t);
|
|
|
574
|
|
|
575 if (cf->referers == NULL) {
|
|
|
576 *e->sp = (uintptr_t) 0;
|
|
|
577 return;
|
|
|
578 }
|
|
|
579
|
|
|
580 if (r->headers_in.referer == NULL) {
|
|
|
581 if (cf->no_referer) {
|
|
|
582 *e->sp = (uintptr_t) 0;
|
|
|
583 return;
|
|
|
584 } else {
|
|
|
585 *e->sp = (uintptr_t) 1;
|
|
|
586 return;
|
|
|
587 }
|
|
|
588 }
|
|
|
589
|
|
|
590 len = r->headers_in.referer->value.len;
|
|
|
591 ref = r->headers_in.referer->value.data;
|
|
|
592
|
|
|
593 if (len < sizeof("http://i.ru") - 1
|
|
|
594 || (ngx_strncasecmp(ref, "http://", 7) != 0))
|
|
|
595 {
|
|
|
596 *e->sp = (uintptr_t) 1;
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 len -= 7;
|
|
|
601 ref += 7;
|
|
|
602
|
|
|
603 refs = cf->referers->elts;
|
|
|
604 for (i = 0; i < cf->referers->nelts; i++ ){
|
|
|
605
|
|
|
606 if (refs[i].name.len > len) {
|
|
|
607 continue;
|
|
|
608 }
|
|
0
|
609
|
|
34
|
610 if (refs[i].wildcard) {
|
|
|
611 for (n = 0; n < len; n++) {
|
|
|
612 if (ref[n] == '/' || ref[n] == ':') {
|
|
|
613 break;
|
|
|
614 }
|
|
|
615
|
|
|
616 if (ref[n] != '.') {
|
|
|
617 continue;
|
|
|
618 }
|
|
|
619
|
|
|
620 if (ngx_strncmp(&ref[n], refs[i].name.data,
|
|
|
621 refs[i].name.len) == 0)
|
|
|
622 {
|
|
|
623 *e->sp = (uintptr_t) 0;
|
|
|
624 return;
|
|
|
625 }
|
|
|
626 }
|
|
|
627
|
|
|
628 } else {
|
|
|
629 if (ngx_strncasecmp(refs[i].name.data, ref, refs[i].name.len) == 0)
|
|
|
630 {
|
|
|
631 *e->sp = (uintptr_t) 0;
|
|
|
632 return;
|
|
|
633 }
|
|
|
634 }
|
|
|
635 }
|
|
0
|
636
|
|
34
|
637 *e->sp = (uintptr_t) 1;
|
|
|
638 }
|
|
|
639
|
|
|
640
|
|
36
|
641 static void
|
|
|
642 ngx_http_rewrite_nop_code(ngx_http_rewrite_engine_t *e)
|
|
34
|
643 {
|
|
|
644 e->ip += sizeof(uintptr_t);
|
|
0
|
645 }
|
|
|
646
|
|
|
647
|
|
36
|
648 static ngx_int_t
|
|
|
649 ngx_http_rewrite_init(ngx_cycle_t *cycle)
|
|
34
|
650 {
|
|
|
651 ngx_http_handler_pt *h;
|
|
|
652 ngx_http_core_main_conf_t *cmcf;
|
|
|
653
|
|
|
654 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
|
|
|
655
|
|
|
656 h = ngx_push_array(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
|
|
|
657 if (h == NULL) {
|
|
|
658 return NGX_ERROR;
|
|
|
659 }
|
|
|
660
|
|
|
661 *h = ngx_http_rewrite_handler;
|
|
|
662
|
|
|
663 return NGX_OK;
|
|
|
664 }
|
|
|
665
|
|
|
666
|
|
36
|
667 static void *
|
|
|
668 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
|
|
0
|
669 {
|
|
|
670 ngx_http_rewrite_loc_conf_t *conf;
|
|
|
671
|
|
|
672 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)))) {
|
|
|
673 return NGX_CONF_ERROR;
|
|
|
674 }
|
|
|
675
|
|
34
|
676 conf->stack_size = NGX_CONF_UNSET_UINT;
|
|
|
677 conf->log = NGX_CONF_UNSET;
|
|
|
678 conf->no_referer = NGX_CONF_UNSET;
|
|
|
679
|
|
0
|
680 return conf;
|
|
|
681 }
|
|
|
682
|
|
|
683
|
|
36
|
684 static char *
|
|
|
685 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
0
|
686 {
|
|
34
|
687 ngx_http_rewrite_loc_conf_t *prev = parent;
|
|
|
688 ngx_http_rewrite_loc_conf_t *conf = child;
|
|
|
689
|
|
|
690 uintptr_t *code, *last;
|
|
|
691 ngx_http_rewrite_regex_code_t *regex;
|
|
|
692
|
|
|
693 ngx_conf_merge_value(conf->log, prev->log, 0);
|
|
|
694 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10);
|
|
|
695
|
|
|
696 if (conf->referers == NULL) {
|
|
|
697 conf->referers = prev->referers;
|
|
|
698 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0);
|
|
|
699 }
|
|
|
700
|
|
48
|
701 if (conf->no_referer == NGX_CONF_UNSET) {
|
|
|
702 conf->no_referer = 0;
|
|
|
703 }
|
|
|
704
|
|
34
|
705 if (conf->codes == NULL) {
|
|
|
706 return NGX_CONF_OK;
|
|
|
707 }
|
|
|
708
|
|
|
709 if (conf->codes == prev->codes) {
|
|
|
710 return NGX_CONF_OK;
|
|
|
711 }
|
|
|
712
|
|
|
713 code = conf->codes->elts;
|
|
|
714 last = (uintptr_t *) ((u_char *) code + conf->codes->nelts);
|
|
0
|
715
|
|
34
|
716 while (code < last) {
|
|
|
717 if (*code == (uintptr_t) NULL) {
|
|
|
718 return NGX_CONF_OK;
|
|
|
719 }
|
|
|
720
|
|
|
721 if (*code == (uintptr_t) &ngx_http_rewrite_regex_start_code) {
|
|
|
722 regex = (ngx_http_rewrite_regex_code_t *) code;
|
|
|
723 if (conf->max_captures < regex->ncaptures) {
|
|
|
724 conf->max_captures = regex->ncaptures;
|
|
|
725 }
|
|
|
726 code = (uintptr_t *) ((u_char *) code + regex->next);
|
|
|
727 }
|
|
|
728
|
|
|
729 if (*code == (uintptr_t) &ngx_http_rewrite_if_code) {
|
|
|
730 code += sizeof(ngx_http_rewrite_if_code_t) / sizeof(uintptr_t);
|
|
|
731 }
|
|
0
|
732
|
|
34
|
733 if (*code == (uintptr_t) &ngx_http_rewrite_return_code) {
|
|
|
734 code += sizeof(ngx_http_rewrite_return_code_t) / sizeof(uintptr_t);
|
|
|
735 }
|
|
|
736
|
|
|
737 if (*code == (uintptr_t) &ngx_http_rewrite_var_code) {
|
|
|
738 code += sizeof(ngx_http_rewrite_var_code_t) / sizeof(uintptr_t);
|
|
|
739 }
|
|
|
740
|
|
|
741 if (*code == (uintptr_t) &ngx_http_rewrite_invalid_referer_code) {
|
|
|
742 code++;
|
|
|
743 }
|
|
|
744
|
|
|
745 if (*code == (uintptr_t) &ngx_http_rewrite_nop_code) {
|
|
|
746 code++;
|
|
|
747 }
|
|
|
748 }
|
|
|
749
|
|
|
750 if (!(code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)))) {
|
|
0
|
751 return NGX_CONF_ERROR;
|
|
|
752 }
|
|
|
753
|
|
34
|
754 *code = (uintptr_t) NULL;
|
|
|
755
|
|
|
756 return NGX_CONF_OK;
|
|
|
757 }
|
|
|
758
|
|
0
|
759
|
|
36
|
760 static char *
|
|
|
761 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
34
|
762 {
|
|
|
763 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
764
|
|
|
765 u_char *data;
|
|
|
766 size_t len, size;
|
|
|
767 ngx_str_t *value, err;
|
|
|
768 ngx_uint_t i, n, last;
|
|
|
769 ngx_http_rewrite_code_pt *code;
|
|
|
770 ngx_http_rewrite_copy_code_t *copy;
|
|
|
771 ngx_http_rewrite_regex_code_t *regex;
|
|
|
772 ngx_http_rewrite_regex_end_code_t *regex_end;
|
|
|
773 ngx_http_rewrite_copy_capture_code_t *copy_capture;
|
|
|
774 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
|
775
|
|
|
776 regex = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
777 sizeof(ngx_http_rewrite_regex_code_t));
|
|
|
778 if (regex == NULL) {
|
|
|
779 return NGX_CONF_ERROR;
|
|
|
780 }
|
|
0
|
781
|
|
|
782 value = cf->args->elts;
|
|
|
783
|
|
34
|
784 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
785 err.data = errstr;
|
|
|
786
|
|
|
787 /* TODO: NGX_REGEX_CASELESS */
|
|
|
788
|
|
|
789 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
|
|
|
790
|
|
|
791 if (regex->regex == NULL) {
|
|
|
792 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
793 return NGX_CONF_ERROR;
|
|
|
794 }
|
|
|
795
|
|
|
796 regex->code = ngx_http_rewrite_regex_start_code;
|
|
|
797 regex->size = 0;
|
|
|
798 regex->ncaptures = 0;
|
|
|
799 regex->status = 0;
|
|
|
800 regex->uri = 1;
|
|
|
801 regex->args = 1;
|
|
|
802 regex->redirect = 0;
|
|
|
803 regex->name = value[1];
|
|
0
|
804
|
|
34
|
805 last = 0;
|
|
|
806
|
|
|
807 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
|
|
|
808 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
809 regex->redirect = 1;
|
|
|
810 last = 1;
|
|
|
811 }
|
|
|
812
|
|
|
813 if (cf->args->nelts == 4) {
|
|
|
814 if (ngx_strcmp(value[3].data, "last") == 0) {
|
|
|
815 last = 1;
|
|
0
|
816
|
|
36
|
817 } else if (ngx_strcmp(value[3].data, "break") == 0) {
|
|
|
818 regex->break_cycle = 1;
|
|
|
819 last = 1;
|
|
|
820
|
|
34
|
821 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
|
|
|
822 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
|
|
|
823 regex->redirect = 1;
|
|
|
824 last = 1;
|
|
0
|
825
|
|
34
|
826 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
|
|
|
827 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
|
|
|
828 regex->redirect = 1;
|
|
|
829 last = 1;
|
|
0
|
830
|
|
34
|
831 } else {
|
|
0
|
832 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
10
|
833 "invalid parameter \"%V\"", &value[3]);
|
|
0
|
834 return NGX_CONF_ERROR;
|
|
|
835 }
|
|
34
|
836 }
|
|
0
|
837
|
|
34
|
838 i = 0;
|
|
|
839
|
|
|
840 while (i < value[2].len) {
|
|
|
841
|
|
|
842 data = &value[2].data[i];
|
|
32
|
843
|
|
34
|
844 if (value[2].data[i] == '$' && i < value[2].len
|
|
|
845 && value[2].data[i + 1] >= '1' && value[2].data[i + 1] <= '9')
|
|
|
846 {
|
|
0
|
847
|
|
34
|
848 /* the "$1" - "$9" captures */
|
|
|
849
|
|
|
850 copy_capture = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
851 sizeof(ngx_http_rewrite_copy_capture_code_t),
|
|
36
|
852 ®ex);
|
|
34
|
853 if (copy_capture == NULL) {
|
|
0
|
854 return NGX_CONF_ERROR;
|
|
|
855 }
|
|
|
856
|
|
34
|
857 i++;
|
|
|
858
|
|
|
859 copy_capture->code = ngx_http_rewrite_copy_capture_code;
|
|
|
860 copy_capture->n = value[2].data[i] - '0';
|
|
|
861
|
|
|
862 if (regex->ncaptures < copy_capture->n) {
|
|
|
863 regex->ncaptures = copy_capture->n;
|
|
|
864 }
|
|
|
865
|
|
|
866 copy_capture->n *= 2;
|
|
|
867
|
|
|
868 i++;
|
|
|
869
|
|
|
870 continue;
|
|
|
871 }
|
|
0
|
872
|
|
34
|
873 if (value[2].data[i] == '?') {
|
|
|
874
|
|
|
875 /* the arguments */
|
|
0
|
876
|
|
34
|
877 if (i == value[2].len - 1) {
|
|
|
878 /* the last "?" drops the original arguments */
|
|
|
879 regex->args = 0;
|
|
|
880 break;
|
|
|
881 }
|
|
|
882
|
|
|
883 if (!regex->redirect) {
|
|
|
884 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
36
|
885 ®ex);
|
|
34
|
886 if (code == NULL) {
|
|
|
887 return NGX_CONF_ERROR;
|
|
0
|
888 }
|
|
|
889
|
|
34
|
890 *code = ngx_http_rewrite_start_args_code;
|
|
|
891
|
|
0
|
892 i++;
|
|
|
893
|
|
32
|
894 continue;
|
|
|
895 }
|
|
34
|
896 }
|
|
|
897
|
|
|
898 i++;
|
|
|
899
|
|
|
900 /* the substituion strings */
|
|
|
901
|
|
|
902 while (i < value[2].len && value[2].data[i] != '$') {
|
|
32
|
903
|
|
|
904 if (value[2].data[i] == '?') {
|
|
|
905
|
|
34
|
906 if (i == value[2].len - 1) {
|
|
|
907 /*
|
|
|
908 * the last "?" drops the original arguments,
|
|
|
909 * and it should not be copied to a substituion
|
|
|
910 */
|
|
|
911 regex->args = 0;
|
|
|
912 break;
|
|
|
913 }
|
|
0
|
914
|
|
34
|
915 if (!regex->redirect) {
|
|
|
916 break;
|
|
|
917 }
|
|
32
|
918 }
|
|
0
|
919
|
|
32
|
920 i++;
|
|
34
|
921 }
|
|
0
|
922
|
|
34
|
923 len = &value[2].data[i] - data;
|
|
0
|
924
|
|
34
|
925 if (len == 0) {
|
|
|
926 continue;
|
|
0
|
927 }
|
|
|
928
|
|
34
|
929 regex->size += len;
|
|
|
930
|
|
|
931 size = (len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1);
|
|
30
|
932
|
|
34
|
933 copy = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
934 sizeof(ngx_http_rewrite_copy_code_t) + size,
|
|
36
|
935 ®ex);
|
|
34
|
936 if (copy == NULL) {
|
|
30
|
937 return NGX_CONF_ERROR;
|
|
|
938 }
|
|
|
939
|
|
34
|
940 copy->code = ngx_http_rewrite_copy_code;
|
|
|
941 copy->len = len;
|
|
|
942
|
|
|
943 ngx_memcpy((u_char *) copy + sizeof(ngx_http_rewrite_copy_code_t),
|
|
|
944 data, len);
|
|
|
945 }
|
|
|
946
|
|
|
947 n = ngx_regex_capture_count(regex->regex);
|
|
|
948
|
|
|
949 if (regex->ncaptures > n) {
|
|
|
950 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
951 "pattern \"%V\" has less captures "
|
|
|
952 "than referrenced in substitution \"%V\"",
|
|
|
953 &value[1], &value[2]);
|
|
|
954 return NGX_CONF_ERROR;
|
|
|
955 }
|
|
|
956
|
|
|
957 if (regex->ncaptures < n) {
|
|
|
958 regex->ncaptures = n;
|
|
|
959 }
|
|
30
|
960
|
|
34
|
961 if (regex->ncaptures) {
|
|
|
962 regex->ncaptures = (regex->ncaptures + 1) * 3;
|
|
|
963 }
|
|
|
964
|
|
|
965 regex_end = ngx_http_rewrite_add_code(lcf->codes,
|
|
|
966 sizeof(ngx_http_rewrite_regex_end_code_t),
|
|
36
|
967 ®ex);
|
|
34
|
968 if (regex_end == NULL) {
|
|
|
969 return NGX_CONF_ERROR;
|
|
|
970 }
|
|
|
971
|
|
|
972 regex_end->code = ngx_http_rewrite_regex_end_code;
|
|
|
973 regex_end->uri = regex->uri;
|
|
|
974 regex_end->args = regex->args;
|
|
|
975 regex_end->redirect = regex->redirect;
|
|
|
976
|
|
|
977 if (last) {
|
|
|
978 code = ngx_http_rewrite_add_code(lcf->codes, sizeof(uintptr_t),
|
|
36
|
979 ®ex);
|
|
34
|
980 if (code == NULL) {
|
|
|
981 return NGX_CONF_ERROR;
|
|
0
|
982 }
|
|
|
983
|
|
34
|
984 *code = (uintptr_t) NULL;
|
|
|
985 }
|
|
|
986
|
|
|
987 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
988 - (u_char *) regex;
|
|
|
989
|
|
|
990 return NGX_CONF_OK;
|
|
|
991 }
|
|
|
992
|
|
|
993
|
|
36
|
994 static char *
|
|
|
995 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
34
|
996 {
|
|
|
997 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
0
|
998
|
|
34
|
999 ngx_str_t *value;
|
|
|
1000 ngx_http_rewrite_return_code_t *ret;
|
|
|
1001
|
|
|
1002 ret = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1003 sizeof(ngx_http_rewrite_return_code_t));
|
|
|
1004 if (ret == NULL) {
|
|
|
1005 return NGX_CONF_ERROR;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 value = cf->args->elts;
|
|
|
1009
|
|
|
1010 ret->code = ngx_http_rewrite_return_code;
|
|
|
1011 ret->null = (uintptr_t) NULL;
|
|
|
1012
|
|
|
1013 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
|
1014
|
|
|
1015 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
|
1016 return NGX_CONF_ERROR;
|
|
0
|
1017 }
|
|
|
1018
|
|
|
1019 return NGX_CONF_OK;
|
|
|
1020 }
|
|
|
1021
|
|
|
1022
|
|
36
|
1023 static char *
|
|
|
1024 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1025 {
|
|
34
|
1026 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
1027
|
|
|
1028 void *mconf;
|
|
|
1029 char *rv;
|
|
|
1030 u_char *elts;
|
|
|
1031 ngx_str_t *value;
|
|
48
|
1032 ngx_int_t index;
|
|
34
|
1033 ngx_uint_t i;
|
|
|
1034 ngx_conf_t save;
|
|
|
1035 ngx_http_rewrite_code_pt *code;
|
|
|
1036 ngx_http_module_t *module;
|
|
|
1037 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
|
1038 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp;
|
|
|
1039 ngx_http_core_main_conf_t *cmcf;
|
|
|
1040 ngx_http_rewrite_if_code_t *if_code;
|
|
|
1041 ngx_http_rewrite_var_code_t *var_code;
|
|
|
1042 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
|
1043
|
|
|
1044 if (!(ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)))) {
|
|
|
1045 return NGX_CONF_ERROR;
|
|
|
1046 }
|
|
|
1047
|
|
|
1048 pctx = cf->ctx;
|
|
|
1049 ctx->main_conf = pctx->main_conf;
|
|
|
1050 ctx->srv_conf = pctx->srv_conf;
|
|
|
1051
|
|
|
1052 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
1053 if (ctx->loc_conf == NULL) {
|
|
|
1054 return NGX_CONF_ERROR;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 for (i = 0; ngx_modules[i]; i++) {
|
|
|
1058 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
|
1059 continue;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 module = ngx_modules[i]->ctx;
|
|
|
1063
|
|
|
1064 if (module->create_loc_conf) {
|
|
|
1065
|
|
|
1066 if (!(mconf = module->create_loc_conf(cf))) {
|
|
|
1067 return NGX_CONF_ERROR;
|
|
|
1068 }
|
|
|
1069
|
|
|
1070 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
|
1071 }
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1075
|
|
|
1076 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
1077 clcf->loc_conf = ctx->loc_conf;
|
|
|
1078 clcf->name = pclcf->name;
|
|
|
1079 clcf->noname = 1;
|
|
|
1080
|
|
|
1081 if (pclcf->locations.elts == NULL) {
|
|
|
1082 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *))
|
|
|
1083 == NGX_ERROR)
|
|
|
1084 {
|
|
|
1085 return NGX_CONF_ERROR;
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 if (!(clcfp = ngx_push_array(&pclcf->locations))) {
|
|
|
1090 return NGX_CONF_ERROR;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 *clcfp = clcf;
|
|
|
1094
|
|
|
1095
|
|
|
1096 /* STUB: "if ($var)" */
|
|
|
1097
|
|
|
1098 value = cf->args->elts;
|
|
|
1099
|
|
|
1100 if (value[1].len < 2
|
|
|
1101 || value[1].data[0] != '('
|
|
|
1102 || value[1].data[1] != '$'
|
|
|
1103 || value[1].data[value[1].len - 1] != ')')
|
|
|
1104 {
|
|
|
1105 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1106 "invalid condition \"%V\"", &value[1]);
|
|
|
1107 return NGX_CONF_ERROR;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 value[1].len -= 3;
|
|
|
1111 value[1].data += 2;
|
|
0
|
1112
|
|
34
|
1113 if (value[1].len == sizeof("invalid_referer") - 1
|
|
|
1114 && ngx_strncmp(value[1].data, "invalid_referer",
|
|
|
1115 sizeof("invalid_referer") - 1) == 0)
|
|
|
1116 {
|
|
|
1117 code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1118 sizeof(ngx_http_rewrite_code_pt));
|
|
|
1119 if (code == NULL) {
|
|
|
1120 return NGX_CONF_ERROR;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 *code = ngx_http_rewrite_invalid_referer_code;
|
|
|
1124
|
|
|
1125 } else {
|
|
|
1126 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
1127
|
|
48
|
1128 index = ngx_http_get_variable_index(cmcf, &value[1]);
|
|
34
|
1129
|
|
48
|
1130 if (index == -1) {
|
|
34
|
1131 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1132 "unknown variable name \"%V\"", &value[1]);
|
|
|
1133 return NGX_CONF_ERROR;
|
|
|
1134 }
|
|
|
1135
|
|
|
1136 var_code = ngx_http_rewrite_start_code(cf->pool, &lcf->codes,
|
|
|
1137 sizeof(ngx_http_rewrite_var_code_t));
|
|
|
1138 if (var_code == NULL) {
|
|
|
1139 return NGX_CONF_ERROR;
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 var_code->code = ngx_http_rewrite_var_code;
|
|
48
|
1143 var_code->index = index;
|
|
34
|
1144 }
|
|
|
1145
|
|
|
1146 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_rewrite_if_code_t));
|
|
|
1147 if (if_code == NULL) {
|
|
|
1148 return NULL;
|
|
|
1149 }
|
|
|
1150
|
|
|
1151 if_code->code = ngx_http_rewrite_if_code;
|
|
|
1152
|
|
|
1153 elts = lcf->codes->elts;
|
|
|
1154
|
|
|
1155
|
|
|
1156 /* the inside directives must compile to the same code array */
|
|
|
1157
|
|
|
1158 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
|
1159 nlcf->codes = lcf->codes;
|
|
|
1160
|
|
|
1161
|
|
|
1162 save = *cf;
|
|
|
1163 cf->ctx = ctx;
|
|
|
1164
|
|
|
1165 if (pclcf->name.len == 0) {
|
|
|
1166 if_code->loc_conf = NULL;
|
|
|
1167 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
|
1168
|
|
|
1169 } else {
|
|
|
1170 if_code->loc_conf = ctx->loc_conf;
|
|
|
1171 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 rv = ngx_conf_parse(cf, NULL);
|
|
|
1175
|
|
|
1176 *cf = save;
|
|
|
1177
|
|
|
1178 if (rv != NGX_CONF_OK) {
|
|
|
1179 return rv;
|
|
|
1180 }
|
|
|
1181
|
|
|
1182
|
|
|
1183 if (elts != lcf->codes->elts) {
|
|
|
1184 if_code = (ngx_http_rewrite_if_code_t *)
|
|
|
1185 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
1189 - (u_char *) if_code;
|
|
0
|
1190
|
|
|
1191 return NGX_CONF_OK;
|
|
|
1192 }
|
|
|
1193
|
|
|
1194
|
|
36
|
1195 static char *
|
|
|
1196 ngx_http_rewrite_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
0
|
1197 {
|
|
34
|
1198 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
0
|
1199
|
|
34
|
1200 ngx_uint_t i, server_names;
|
|
|
1201 ngx_str_t *value;
|
|
|
1202 ngx_http_server_name_t *sn;
|
|
|
1203 ngx_http_core_srv_conf_t *cscf;
|
|
|
1204 ngx_http_rewrite_referer_t *ref;
|
|
|
1205
|
|
|
1206 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module);
|
|
0
|
1207
|
|
34
|
1208 if (lcf->referers == NULL) {
|
|
|
1209 lcf->referers = ngx_array_create(cf->pool,
|
|
|
1210 cf->args->nelts + cscf->server_names.nelts,
|
|
|
1211 sizeof(ngx_http_rewrite_referer_t));
|
|
|
1212 if (lcf->referers == NULL) {
|
|
|
1213 return NGX_CONF_ERROR;
|
|
|
1214 }
|
|
0
|
1215 }
|
|
|
1216
|
|
34
|
1217 value = cf->args->elts;
|
|
|
1218 server_names = 0;
|
|
|
1219
|
|
|
1220 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1221 if (value[i].len == 0) {
|
|
|
1222 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1223 "invalid referer \"%V\"", &value[i]);
|
|
|
1224 return NGX_CONF_ERROR;
|
|
|
1225 }
|
|
|
1226
|
|
|
1227 if (ngx_strcmp(value[i].data, "none") == 0) {
|
|
|
1228 lcf->no_referer = 1;
|
|
|
1229 continue;
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 if (ngx_strcmp(value[i].data, "server_names") == 0) {
|
|
|
1233 server_names = 1;
|
|
|
1234 continue;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 if (!(ref = ngx_array_push(lcf->referers))) {
|
|
|
1238 return NGX_CONF_ERROR;
|
|
|
1239 }
|
|
|
1240
|
|
|
1241 if (value[i].data[0] != '*') {
|
|
|
1242 ref->name = value[i];
|
|
|
1243 ref->wildcard = 0;
|
|
|
1244 continue;
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 if (value[i].data[1] != '.') {
|
|
|
1248 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1249 "invalid wildcard referer \"%V\"", &value[i]);
|
|
|
1250 return NGX_CONF_ERROR;
|
|
|
1251 }
|
|
|
1252
|
|
|
1253 ref->name.len = value[i].len - 1;
|
|
|
1254 ref->name.data = value[i].data + 1;
|
|
|
1255 ref->wildcard = 1;
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 if (!server_names) {
|
|
|
1259 return NGX_CONF_OK;
|
|
|
1260 }
|
|
0
|
1261
|
|
34
|
1262 sn = cscf->server_names.elts;
|
|
|
1263 for (i = 0; i < cscf->server_names.nelts; i++) {
|
|
|
1264 if (!(ref = ngx_array_push(lcf->referers))) {
|
|
|
1265 return NGX_CONF_ERROR;
|
|
|
1266 }
|
|
|
1267
|
|
|
1268 ref->name.len = sn[i].name.len + 1;
|
|
|
1269 if (!(ref->name.data = ngx_palloc(cf->pool, ref->name.len))) {
|
|
|
1270 return NGX_CONF_ERROR;
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 ngx_memcpy(ref->name.data, sn[i].name.data, sn[i].name.len);
|
|
|
1274 ref->name.data[sn[i].name.len] = '/';
|
|
|
1275 ref->wildcard = sn[i].wildcard;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 return NGX_CONF_OK;
|
|
0
|
1279 }
|
|
34
|
1280
|
|
|
1281
|
|
36
|
1282 static void *
|
|
|
1283 ngx_http_rewrite_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size)
|
|
34
|
1284 {
|
|
|
1285 if (*codes == NULL) {
|
|
|
1286 if (!(*codes = ngx_array_create(pool, 256, 1))) {
|
|
|
1287 return NULL;
|
|
|
1288 }
|
|
|
1289 }
|
|
|
1290
|
|
|
1291 return ngx_array_push_n(*codes, size);
|
|
|
1292 }
|
|
|
1293
|
|
|
1294
|
|
36
|
1295 static void *
|
|
|
1296 ngx_http_rewrite_add_code(ngx_array_t *codes, size_t size, void *code)
|
|
34
|
1297 {
|
|
36
|
1298 u_char *elts, **p;
|
|
34
|
1299 void *new;
|
|
|
1300
|
|
|
1301 elts = codes->elts;
|
|
|
1302
|
|
|
1303 if (!(new = ngx_array_push_n(codes, size))) {
|
|
|
1304 return NGX_CONF_ERROR;
|
|
|
1305 }
|
|
|
1306
|
|
|
1307 if (elts != codes->elts) {
|
|
36
|
1308 p = code;
|
|
|
1309 *p += (u_char *) codes->elts - elts;
|
|
34
|
1310 }
|
|
|
1311
|
|
|
1312 return new;
|
|
|
1313 }
|
