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50
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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12 typedef struct {
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126
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13 ngx_array_t *codes; /* uintptr_t */
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50
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14
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126
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15 ngx_uint_t captures;
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16 ngx_uint_t stack_size;
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50
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17
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126
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18 ngx_flag_t log;
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184
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19 ngx_flag_t uninitialized_variable_warn;
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50
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20 } ngx_http_rewrite_loc_conf_t;
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21
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22
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23 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf);
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24 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf,
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25 void *parent, void *child);
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230
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26 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf);
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50
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27 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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28 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd,
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29 void *conf);
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76
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30 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd,
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31 void *conf);
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50
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32 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd,
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33 void *conf);
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34 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf,
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35 ngx_http_rewrite_loc_conf_t *lcf);
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36 static char *ngx_http_rewrite_variable(ngx_conf_t *cf,
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37 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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58
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38 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd,
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50
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39 void *conf);
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126
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40 static char * ngx_http_rewrite_value(ngx_conf_t *cf,
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41 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value);
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50
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42
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43
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44 static ngx_command_t ngx_http_rewrite_commands[] = {
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45
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46 { ngx_string("rewrite"),
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47 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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48 |NGX_CONF_TAKE23,
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49 ngx_http_rewrite,
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50 NGX_HTTP_LOC_CONF_OFFSET,
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51 0,
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52 NULL },
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53
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54 { ngx_string("return"),
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55 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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56 |NGX_CONF_TAKE1,
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57 ngx_http_rewrite_return,
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58 NGX_HTTP_LOC_CONF_OFFSET,
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59 0,
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60 NULL },
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61
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76
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62 { ngx_string("break"),
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63 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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64 |NGX_CONF_NOARGS,
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65 ngx_http_rewrite_break,
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66 NGX_HTTP_LOC_CONF_OFFSET,
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67 0,
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68 NULL },
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69
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50
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70 { ngx_string("if"),
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71 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE,
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72 ngx_http_rewrite_if,
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73 NGX_HTTP_LOC_CONF_OFFSET,
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74 0,
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75 NULL },
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76
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77 { ngx_string("set"),
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78 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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79 |NGX_CONF_TAKE2,
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80 ngx_http_rewrite_set,
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81 NGX_HTTP_LOC_CONF_OFFSET,
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82 0,
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83 NULL },
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84
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85 { ngx_string("rewrite_log"),
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184
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86 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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87 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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50
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88 ngx_conf_set_flag_slot,
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89 NGX_HTTP_LOC_CONF_OFFSET,
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90 offsetof(ngx_http_rewrite_loc_conf_t, log),
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91 NULL },
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92
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184
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93 { ngx_string("uninitialized_variable_warn"),
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94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF
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95 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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96 ngx_conf_set_flag_slot,
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97 NGX_HTTP_LOC_CONF_OFFSET,
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98 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn),
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99 NULL },
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100
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50
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101 ngx_null_command
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102 };
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103
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104
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216
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105 static ngx_http_module_t ngx_http_rewrite_module_ctx = {
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58
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106 NULL, /* preconfiguration */
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230
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107 ngx_http_rewrite_init, /* postconfiguration */
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108
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109 NULL, /* create main configuration */
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110 NULL, /* init main configuration */
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111
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112 NULL, /* create server configuration */
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113 NULL, /* merge server configuration */
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114
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115 ngx_http_rewrite_create_loc_conf, /* create location configration */
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116 ngx_http_rewrite_merge_loc_conf /* merge location configration */
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117 };
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118
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119
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120 ngx_module_t ngx_http_rewrite_module = {
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58
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121 NGX_MODULE_V1,
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126
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122 &ngx_http_rewrite_module_ctx, /* module context */
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50
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123 ngx_http_rewrite_commands, /* module directives */
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124 NGX_HTTP_MODULE, /* module type */
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90
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125 NULL, /* init master */
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230
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126 NULL, /* init module */
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90
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127 NULL, /* init process */
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128 NULL, /* init thread */
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129 NULL, /* exit thread */
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130 NULL, /* exit process */
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131 NULL, /* exit master */
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132 NGX_MODULE_V1_PADDING
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50
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133 };
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134
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135
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136 static ngx_int_t
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137 ngx_http_rewrite_handler(ngx_http_request_t *r)
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138 {
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58
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139 ngx_http_script_code_pt code;
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140 ngx_http_script_engine_t *e;
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184
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141 ngx_http_rewrite_loc_conf_t *rlcf;
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142
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184
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143 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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144
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184
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145 if (rlcf->codes == NULL) {
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146 return NGX_DECLINED;
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147 }
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148
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149 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t));
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150 if (e == NULL) {
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151 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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152 }
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153
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58
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154 e->sp = ngx_pcalloc(r->pool,
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184
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155 rlcf->stack_size * sizeof(ngx_http_variable_value_t));
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156 if (e->sp == NULL) {
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157 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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158 }
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159
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184
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160 if (rlcf->captures) {
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161 e->captures = ngx_palloc(r->pool, rlcf->captures * sizeof(int));
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162 if (e->captures == NULL) {
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163 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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164 }
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165
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166 } else {
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167 e->captures = NULL;
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168 }
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169
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184
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170 e->ip = rlcf->codes->elts;
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171 e->request = r;
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172 e->quote = 1;
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184
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173 e->log = rlcf->log;
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174 e->status = NGX_DECLINED;
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175
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176 while (*(uintptr_t *) e->ip) {
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177 code = *(ngx_http_script_code_pt *) e->ip;
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178 code(e);
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179 }
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180
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242
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181 if (e->status == NGX_DECLINED) {
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182 return NGX_DECLINED;
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183 }
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184
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238
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185 if (r->err_status == 0) {
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186 return e->status;
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187 }
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188
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189 return r->err_status;
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50
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190 }
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191
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192
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122
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193 static ngx_int_t
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194 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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195 uintptr_t data)
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50
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196 {
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184
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197 ngx_http_variable_t *var;
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198 ngx_http_core_main_conf_t *cmcf;
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199 ngx_http_rewrite_loc_conf_t *rlcf;
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200
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201 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module);
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202
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203 if (rlcf->uninitialized_variable_warn == 0) {
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204 *v = ngx_http_variable_null_value;
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205 return NGX_OK;
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206 }
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50
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207
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208 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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209
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210 var = cmcf->variables.elts;
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211
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212 /*
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213 * the ngx_http_rewrite_module sets variables directly in r->variables,
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68
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214 * and they should be handled by ngx_http_get_indexed_variable(),
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215 * so the handler is called only if the variable is not initialized
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216 */
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217
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184
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218 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
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219 "using uninitialized \"%V\" variable", &var[data].name);
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220
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126
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221 *v = ngx_http_variable_null_value;
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122
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222
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223 return NGX_OK;
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50
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224 }
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225
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226
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227 static void *
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228 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf)
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229 {
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230 ngx_http_rewrite_loc_conf_t *conf;
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231
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232 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t));
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233 if (conf == NULL) {
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234 return NGX_CONF_ERROR;
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235 }
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236
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237 conf->stack_size = NGX_CONF_UNSET_UINT;
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238 conf->log = NGX_CONF_UNSET;
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184
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239 conf->uninitialized_variable_warn = NGX_CONF_UNSET;
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240
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241 return conf;
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242 }
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243
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244
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245 static char *
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246 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
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247 {
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248 ngx_http_rewrite_loc_conf_t *prev = parent;
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249 ngx_http_rewrite_loc_conf_t *conf = child;
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250
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251 uintptr_t *code;
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252
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253 ngx_conf_merge_value(conf->log, prev->log, 0);
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184
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254 ngx_conf_merge_value(conf->uninitialized_variable_warn,
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255 prev->uninitialized_variable_warn, 1);
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212
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256 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10);
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257
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258 if (conf->codes == NULL) {
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259 return NGX_CONF_OK;
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260 }
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261
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262 if (conf->codes == prev->codes) {
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263 return NGX_CONF_OK;
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264 }
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265
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266 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t));
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267 if (code == NULL) {
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268 return NGX_CONF_ERROR;
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269 }
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270
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271 *code = (uintptr_t) NULL;
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272
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273 return NGX_CONF_OK;
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274 }
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275
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276
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277 static ngx_int_t
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230
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278 ngx_http_rewrite_init(ngx_conf_t *cf)
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126
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279 {
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58
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280 ngx_http_handler_pt *h;
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281 ngx_http_core_main_conf_t *cmcf;
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282
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230
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283 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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58
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284
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122
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285 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers);
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286 if (h == NULL) {
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287 return NGX_ERROR;
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288 }
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289
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290 *h = ngx_http_rewrite_handler;
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291
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292 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers);
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293 if (h == NULL) {
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294 return NGX_ERROR;
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295 }
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296
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297 *h = ngx_http_rewrite_handler;
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298
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299 return NGX_OK;
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126
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300 }
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301
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302
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303 static char *
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304 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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305 {
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126
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306 ngx_http_rewrite_loc_conf_t *lcf = conf;
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307
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58
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308 ngx_str_t *value, err;
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309 ngx_int_t n;
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310 ngx_uint_t last;
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311 ngx_http_script_code_pt *code;
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312 ngx_http_script_compile_t sc;
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313 ngx_http_script_regex_code_t *regex;
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314 ngx_http_script_regex_end_code_t *regex_end;
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315 u_char errstr[NGX_MAX_CONF_ERRSTR];
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316
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58
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317 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
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318 sizeof(ngx_http_script_regex_code_t));
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50
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319 if (regex == NULL) {
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320 return NGX_CONF_ERROR;
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321 }
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322
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58
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323 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
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324
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50
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325 value = cf->args->elts;
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326
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327 err.len = NGX_MAX_CONF_ERRSTR;
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328 err.data = errstr;
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329
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330 /* TODO: NGX_REGEX_CASELESS */
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331
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332 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
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333
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334 if (regex->regex == NULL) {
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335 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
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336 return NGX_CONF_ERROR;
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337 }
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338
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58
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339 regex->code = ngx_http_script_regex_start_code;
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50
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340 regex->uri = 1;
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341 regex->name = value[1];
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342
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58
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343 if (value[2].data[value[2].len - 1] == '?') {
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344
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345 /* the last "?" drops the original arguments */
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346 value[2].len--;
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347
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348 } else {
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349 regex->add_args = 1;
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350 }
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351
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50
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352 last = 0;
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353
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354 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) {
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355 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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356 regex->redirect = 1;
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357 last = 1;
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358 }
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359
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360 if (cf->args->nelts == 4) {
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361 if (ngx_strcmp(value[3].data, "last") == 0) {
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362 last = 1;
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363
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364 } else if (ngx_strcmp(value[3].data, "break") == 0) {
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365 regex->break_cycle = 1;
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366 last = 1;
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367
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368 } else if (ngx_strcmp(value[3].data, "redirect") == 0) {
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369 regex->status = NGX_HTTP_MOVED_TEMPORARILY;
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370 regex->redirect = 1;
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371 last = 1;
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372
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373 } else if (ngx_strcmp(value[3].data, "permanent") == 0) {
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374 regex->status = NGX_HTTP_MOVED_PERMANENTLY;
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375 regex->redirect = 1;
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376 last = 1;
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377
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378 } else {
|
|
|
379 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
380 "invalid parameter \"%V\"", &value[3]);
|
|
|
381 return NGX_CONF_ERROR;
|
|
|
382 }
|
|
|
383 }
|
|
|
384
|
|
58
|
385 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
50
|
386
|
|
58
|
387 sc.cf = cf;
|
|
|
388 sc.source = &value[2];
|
|
|
389 sc.lengths = ®ex->lengths;
|
|
|
390 sc.values = &lcf->codes;
|
|
|
391 sc.variables = ngx_http_script_variables_count(&value[2]);
|
|
|
392 sc.main = regex;
|
|
|
393 sc.complete_lengths = 1;
|
|
|
394 sc.compile_args = !regex->redirect;
|
|
50
|
395
|
|
58
|
396 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
|
397 return NGX_CONF_ERROR;
|
|
|
398 }
|
|
50
|
399
|
|
58
|
400 regex = sc.main;
|
|
50
|
401
|
|
58
|
402 regex->ncaptures = sc.ncaptures;
|
|
|
403 regex->size = sc.size;
|
|
|
404 regex->args = sc.args;
|
|
50
|
405
|
|
190
|
406 if (sc.variables == 0 && !sc.dup_capture) {
|
|
58
|
407 regex->lengths = NULL;
|
|
50
|
408 }
|
|
|
409
|
|
|
410 n = ngx_regex_capture_count(regex->regex);
|
|
|
411
|
|
|
412 if (n < 0) {
|
|
|
413 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
414 ngx_regex_capture_count_n " failed for "
|
|
|
415 "pattern \"%V\"", &value[1]);
|
|
|
416 return NGX_CONF_ERROR;
|
|
|
417 }
|
|
|
418
|
|
|
419 if (regex->ncaptures > (ngx_uint_t) n) {
|
|
|
420 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
421 "pattern \"%V\" has less captures "
|
|
|
422 "than referrenced in substitution \"%V\"",
|
|
|
423 &value[1], &value[2]);
|
|
|
424 return NGX_CONF_ERROR;
|
|
|
425 }
|
|
|
426
|
|
|
427 if (regex->ncaptures < (ngx_uint_t) n) {
|
|
|
428 regex->ncaptures = (ngx_uint_t) n;
|
|
|
429 }
|
|
|
430
|
|
|
431 if (regex->ncaptures) {
|
|
|
432 regex->ncaptures = (regex->ncaptures + 1) * 3;
|
|
|
433
|
|
64
|
434 if (lcf->captures < regex->ncaptures) {
|
|
|
435 lcf->captures = regex->ncaptures;
|
|
|
436 }
|
|
58
|
437 }
|
|
|
438
|
|
|
439 regex_end = ngx_http_script_add_code(lcf->codes,
|
|
|
440 sizeof(ngx_http_script_regex_end_code_t),
|
|
|
441 ®ex);
|
|
50
|
442 if (regex_end == NULL) {
|
|
|
443 return NGX_CONF_ERROR;
|
|
|
444 }
|
|
|
445
|
|
58
|
446 regex_end->code = ngx_http_script_regex_end_code;
|
|
50
|
447 regex_end->uri = regex->uri;
|
|
|
448 regex_end->args = regex->args;
|
|
58
|
449 regex_end->add_args = regex->add_args;
|
|
50
|
450 regex_end->redirect = regex->redirect;
|
|
|
451
|
|
|
452 if (last) {
|
|
66
|
453 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex);
|
|
50
|
454 if (code == NULL) {
|
|
|
455 return NGX_CONF_ERROR;
|
|
|
456 }
|
|
|
457
|
|
|
458 *code = (uintptr_t) NULL;
|
|
|
459 }
|
|
|
460
|
|
|
461 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
462 - (u_char *) regex;
|
|
|
463
|
|
|
464 return NGX_CONF_OK;
|
|
|
465 }
|
|
|
466
|
|
|
467
|
|
|
468 static char *
|
|
|
469 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
470 {
|
|
126
|
471 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
472
|
|
58
|
473 ngx_str_t *value;
|
|
|
474 ngx_http_script_return_code_t *ret;
|
|
50
|
475
|
|
58
|
476 ret = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
477 sizeof(ngx_http_script_return_code_t));
|
|
50
|
478 if (ret == NULL) {
|
|
|
479 return NGX_CONF_ERROR;
|
|
|
480 }
|
|
|
481
|
|
|
482 value = cf->args->elts;
|
|
|
483
|
|
58
|
484 ret->code = ngx_http_script_return_code;
|
|
50
|
485 ret->null = (uintptr_t) NULL;
|
|
|
486
|
|
|
487 ret->status = ngx_atoi(value[1].data, value[1].len);
|
|
|
488
|
|
|
489 if (ret->status == (uintptr_t) NGX_ERROR) {
|
|
|
490 return NGX_CONF_ERROR;
|
|
|
491 }
|
|
|
492
|
|
|
493 return NGX_CONF_OK;
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
|
497 static char *
|
|
76
|
498 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
499 {
|
|
|
500 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
|
501
|
|
|
502 ngx_http_script_code_pt *code;
|
|
|
503
|
|
|
504 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t));
|
|
|
505 if (code == NULL) {
|
|
|
506 return NGX_CONF_ERROR;
|
|
|
507 }
|
|
|
508
|
|
|
509 *code = ngx_http_script_break_code;
|
|
|
510
|
|
|
511 return NGX_CONF_OK;
|
|
|
512 }
|
|
|
513
|
|
|
514
|
|
|
515 static char *
|
|
50
|
516 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
517 {
|
|
126
|
518 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
519
|
|
|
520 void *mconf;
|
|
|
521 char *rv;
|
|
|
522 u_char *elts;
|
|
|
523 ngx_uint_t i;
|
|
|
524 ngx_conf_t save;
|
|
|
525 ngx_http_module_t *module;
|
|
|
526 ngx_http_conf_ctx_t *ctx, *pctx;
|
|
378
|
527 ngx_http_core_loc_conf_t *clcf, *pclcf;
|
|
58
|
528 ngx_http_script_if_code_t *if_code;
|
|
50
|
529 ngx_http_rewrite_loc_conf_t *nlcf;
|
|
|
530
|
|
|
531 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
532 if (ctx == NULL) {
|
|
|
533 return NGX_CONF_ERROR;
|
|
|
534 }
|
|
|
535
|
|
|
536 pctx = cf->ctx;
|
|
|
537 ctx->main_conf = pctx->main_conf;
|
|
126
|
538 ctx->srv_conf = pctx->srv_conf;
|
|
50
|
539
|
|
|
540 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
541 if (ctx->loc_conf == NULL) {
|
|
|
542 return NGX_CONF_ERROR;
|
|
|
543 }
|
|
|
544
|
|
|
545 for (i = 0; ngx_modules[i]; i++) {
|
|
|
546 if (ngx_modules[i]->type != NGX_HTTP_MODULE) {
|
|
|
547 continue;
|
|
|
548 }
|
|
|
549
|
|
|
550 module = ngx_modules[i]->ctx;
|
|
126
|
551
|
|
50
|
552 if (module->create_loc_conf) {
|
|
|
553
|
|
|
554 mconf = module->create_loc_conf(cf);
|
|
|
555 if (mconf == NULL) {
|
|
|
556 return NGX_CONF_ERROR;
|
|
|
557 }
|
|
|
558
|
|
|
559 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf;
|
|
|
560 }
|
|
|
561 }
|
|
|
562
|
|
|
563 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
564
|
|
|
565 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
|
|
|
566 clcf->loc_conf = ctx->loc_conf;
|
|
|
567 clcf->name = pclcf->name;
|
|
|
568 clcf->noname = 1;
|
|
|
569
|
|
378
|
570 if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) {
|
|
50
|
571 return NGX_CONF_ERROR;
|
|
|
572 }
|
|
|
573
|
|
|
574 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) {
|
|
|
575 return NGX_CONF_ERROR;
|
|
|
576 }
|
|
|
577
|
|
58
|
578 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t));
|
|
50
|
579 if (if_code == NULL) {
|
|
|
580 return NULL;
|
|
|
581 }
|
|
|
582
|
|
58
|
583 if_code->code = ngx_http_script_if_code;
|
|
50
|
584
|
|
|
585 elts = lcf->codes->elts;
|
|
|
586
|
|
|
587
|
|
180
|
588 /* the inner directives must be compiled to the same code array */
|
|
50
|
589
|
|
|
590 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index];
|
|
|
591 nlcf->codes = lcf->codes;
|
|
|
592
|
|
|
593
|
|
|
594 save = *cf;
|
|
|
595 cf->ctx = ctx;
|
|
|
596
|
|
|
597 if (pclcf->name.len == 0) {
|
|
|
598 if_code->loc_conf = NULL;
|
|
|
599 cf->cmd_type = NGX_HTTP_SIF_CONF;
|
|
|
600
|
|
|
601 } else {
|
|
|
602 if_code->loc_conf = ctx->loc_conf;
|
|
|
603 cf->cmd_type = NGX_HTTP_LIF_CONF;
|
|
|
604 }
|
|
|
605
|
|
|
606 rv = ngx_conf_parse(cf, NULL);
|
|
|
607
|
|
|
608 *cf = save;
|
|
|
609
|
|
|
610 if (rv != NGX_CONF_OK) {
|
|
|
611 return rv;
|
|
|
612 }
|
|
|
613
|
|
|
614
|
|
66
|
615 if (lcf->captures < nlcf->captures) {
|
|
|
616 lcf->captures = nlcf->captures;
|
|
|
617 }
|
|
|
618
|
|
|
619
|
|
50
|
620 if (elts != lcf->codes->elts) {
|
|
58
|
621 if_code = (ngx_http_script_if_code_t *)
|
|
50
|
622 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts));
|
|
|
623 }
|
|
|
624
|
|
|
625 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts
|
|
|
626 - (u_char *) if_code;
|
|
|
627
|
|
104
|
628 /* the code array belong to parent block */
|
|
|
629
|
|
|
630 nlcf->codes = NULL;
|
|
|
631
|
|
50
|
632 return NGX_CONF_OK;
|
|
|
633 }
|
|
|
634
|
|
|
635
|
|
|
636 static char *
|
|
|
637 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf)
|
|
|
638 {
|
|
180
|
639 u_char *p;
|
|
|
640 size_t len;
|
|
58
|
641 ngx_str_t *value, err;
|
|
64
|
642 ngx_uint_t cur, last, n;
|
|
126
|
643 ngx_http_script_code_pt *code;
|
|
180
|
644 ngx_http_script_file_code_t *fop;
|
|
58
|
645 ngx_http_script_regex_code_t *regex;
|
|
|
646 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
50
|
647
|
|
|
648 value = cf->args->elts;
|
|
|
649 last = cf->args->nelts - 1;
|
|
|
650
|
|
|
651 if (value[1].len < 1 || value[1].data[0] != '(') {
|
|
|
652 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
653 "invalid condition \"%V\"", &value[1]);
|
|
|
654 return NGX_CONF_ERROR;
|
|
|
655 }
|
|
|
656
|
|
|
657 if (value[1].len == 1) {
|
|
|
658 cur = 2;
|
|
|
659
|
|
|
660 } else {
|
|
|
661 cur = 1;
|
|
|
662 value[1].len--;
|
|
|
663 value[1].data++;
|
|
|
664 }
|
|
|
665
|
|
|
666 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') {
|
|
|
667 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
668 "invalid condition \"%V\"", &value[last]);
|
|
|
669 return NGX_CONF_ERROR;
|
|
|
670 }
|
|
|
671
|
|
|
672 if (value[last].len == 1) {
|
|
|
673 last--;
|
|
|
674
|
|
|
675 } else {
|
|
|
676 value[last].len--;
|
|
|
677 value[last].data[value[last].len] = '\0';
|
|
|
678 }
|
|
|
679
|
|
180
|
680 len = value[cur].len;
|
|
|
681 p = value[cur].data;
|
|
|
682
|
|
|
683 if (len > 1 && p[0] == '$') {
|
|
50
|
684
|
|
|
685 if (cur != last && cur + 2 != last) {
|
|
|
686 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
180
|
687 "invalid condition \"%V\"", &value[cur]);
|
|
50
|
688 return NGX_CONF_ERROR;
|
|
|
689 }
|
|
|
690
|
|
126
|
691 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) {
|
|
50
|
692 return NGX_CONF_ERROR;
|
|
|
693 }
|
|
|
694
|
|
|
695 if (cur == last) {
|
|
|
696 return NGX_CONF_OK;
|
|
|
697 }
|
|
|
698
|
|
|
699 cur++;
|
|
|
700
|
|
180
|
701 len = value[cur].len;
|
|
|
702 p = value[cur].data;
|
|
|
703
|
|
|
704 if (len == 1 && p[0] == '=') {
|
|
126
|
705
|
|
|
706 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
707 return NGX_CONF_ERROR;
|
|
|
708 }
|
|
|
709
|
|
|
710 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
711 sizeof(uintptr_t));
|
|
|
712 if (code == NULL) {
|
|
|
713 return NGX_CONF_ERROR;
|
|
|
714 }
|
|
|
715
|
|
|
716 *code = ngx_http_script_equal_code;
|
|
|
717
|
|
|
718 return NGX_CONF_OK;
|
|
50
|
719 }
|
|
|
720
|
|
180
|
721 if (len == 2 && p[0] == '!' && p[1] == '=') {
|
|
|
722
|
|
126
|
723 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
724 return NGX_CONF_ERROR;
|
|
|
725 }
|
|
|
726
|
|
|
727 code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
728 sizeof(uintptr_t));
|
|
|
729 if (code == NULL) {
|
|
|
730 return NGX_CONF_ERROR;
|
|
|
731 }
|
|
|
732
|
|
|
733 *code = ngx_http_script_not_equal_code;
|
|
|
734 return NGX_CONF_OK;
|
|
50
|
735 }
|
|
|
736
|
|
180
|
737 if ((len == 1 && p[0] == '~')
|
|
|
738 || (len == 2 && p[0] == '~' && p[1] == '*')
|
|
|
739 || (len == 2 && p[0] == '!' && p[1] == '~')
|
|
|
740 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*'))
|
|
126
|
741 {
|
|
|
742 regex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
743 sizeof(ngx_http_script_regex_code_t));
|
|
|
744 if (regex == NULL) {
|
|
|
745 return NGX_CONF_ERROR;
|
|
|
746 }
|
|
58
|
747
|
|
126
|
748 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t));
|
|
|
749
|
|
|
750 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
751 err.data = errstr;
|
|
|
752
|
|
|
753 regex->regex = ngx_regex_compile(&value[last],
|
|
180
|
754 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0,
|
|
|
755 cf->pool, &err);
|
|
50
|
756
|
|
126
|
757 if (regex->regex == NULL) {
|
|
|
758 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
|
|
|
759 return NGX_CONF_ERROR;
|
|
|
760 }
|
|
|
761
|
|
|
762 regex->code = ngx_http_script_regex_start_code;
|
|
|
763 regex->next = sizeof(ngx_http_script_regex_code_t);
|
|
|
764 regex->test = 1;
|
|
180
|
765 if (p[0] == '!') {
|
|
|
766 regex->negative_test = 1;
|
|
|
767 }
|
|
126
|
768 regex->name = value[last];
|
|
50
|
769
|
|
126
|
770 n = ngx_regex_capture_count(regex->regex);
|
|
|
771
|
|
|
772 if (n) {
|
|
|
773 regex->ncaptures = (n + 1) * 3;
|
|
|
774
|
|
|
775 if (lcf->captures < regex->ncaptures) {
|
|
|
776 lcf->captures = regex->ncaptures;
|
|
|
777 }
|
|
|
778 }
|
|
|
779
|
|
|
780 return NGX_CONF_OK;
|
|
50
|
781 }
|
|
|
782
|
|
126
|
783 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
784 "unexpected \"%V\" in condition", &value[cur]);
|
|
|
785 return NGX_CONF_ERROR;
|
|
180
|
786
|
|
|
787 } else if ((len == 2 && p[0] == '-')
|
|
|
788 || (len == 3 && p[0] == '!' && p[1] == '-'))
|
|
|
789 {
|
|
|
790 if (cur + 1 != last) {
|
|
|
791 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
792 "invalid condition \"%V\"", &value[cur]);
|
|
|
793 return NGX_CONF_ERROR;
|
|
|
794 }
|
|
|
795
|
|
|
796 value[last].data[value[last].len] = '\0';
|
|
|
797 value[last].len++;
|
|
|
798
|
|
|
799 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) {
|
|
|
800 return NGX_CONF_ERROR;
|
|
|
801 }
|
|
|
802
|
|
|
803 fop = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
804 sizeof(ngx_http_script_file_code_t));
|
|
|
805 if (fop == NULL) {
|
|
|
806 return NGX_CONF_ERROR;
|
|
|
807 }
|
|
|
808
|
|
|
809 fop->code = ngx_http_script_file_code;
|
|
|
810
|
|
|
811 if (p[1] == 'f') {
|
|
|
812 fop->op = ngx_http_script_file_plain;
|
|
|
813 return NGX_CONF_OK;
|
|
|
814 }
|
|
|
815
|
|
218
|
816 if (p[1] == 'd') {
|
|
|
817 fop->op = ngx_http_script_file_dir;
|
|
|
818 return NGX_CONF_OK;
|
|
|
819 }
|
|
|
820
|
|
|
821 if (p[1] == 'e') {
|
|
|
822 fop->op = ngx_http_script_file_exists;
|
|
|
823 return NGX_CONF_OK;
|
|
|
824 }
|
|
|
825
|
|
|
826 if (p[1] == 'x') {
|
|
|
827 fop->op = ngx_http_script_file_exec;
|
|
|
828 return NGX_CONF_OK;
|
|
|
829 }
|
|
|
830
|
|
180
|
831 if (p[0] == '!') {
|
|
|
832 if (p[2] == 'f') {
|
|
|
833 fop->op = ngx_http_script_file_not_plain;
|
|
|
834 return NGX_CONF_OK;
|
|
|
835 }
|
|
218
|
836
|
|
|
837 if (p[2] == 'd') {
|
|
|
838 fop->op = ngx_http_script_file_not_dir;
|
|
|
839 return NGX_CONF_OK;
|
|
|
840 }
|
|
|
841
|
|
|
842 if (p[2] == 'e') {
|
|
|
843 fop->op = ngx_http_script_file_not_exists;
|
|
|
844 return NGX_CONF_OK;
|
|
|
845 }
|
|
|
846
|
|
|
847 if (p[2] == 'x') {
|
|
|
848 fop->op = ngx_http_script_file_not_exec;
|
|
|
849 return NGX_CONF_OK;
|
|
|
850 }
|
|
180
|
851 }
|
|
|
852
|
|
|
853 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
854 "invalid condition \"%V\"", &value[cur]);
|
|
|
855 return NGX_CONF_ERROR;
|
|
50
|
856 }
|
|
|
857
|
|
|
858 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
859 "invalid condition \"%V\"", &value[cur]);
|
|
|
860
|
|
|
861 return NGX_CONF_ERROR;
|
|
|
862 }
|
|
|
863
|
|
|
864
|
|
|
865 static char *
|
|
|
866 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
|
867 ngx_str_t *value)
|
|
|
868 {
|
|
58
|
869 ngx_int_t index;
|
|
|
870 ngx_http_script_var_code_t *var_code;
|
|
50
|
871
|
|
|
872 value->len--;
|
|
|
873 value->data++;
|
|
|
874
|
|
126
|
875 index = ngx_http_get_variable_index(cf, value);
|
|
50
|
876
|
|
126
|
877 if (index == NGX_ERROR) {
|
|
|
878 return NGX_CONF_ERROR;
|
|
50
|
879 }
|
|
|
880
|
|
126
|
881 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
882 sizeof(ngx_http_script_var_code_t));
|
|
|
883 if (var_code == NULL) {
|
|
|
884 return NGX_CONF_ERROR;
|
|
50
|
885 }
|
|
|
886
|
|
126
|
887 var_code->code = ngx_http_script_var_code;
|
|
|
888 var_code->index = index;
|
|
50
|
889
|
|
|
890 return NGX_CONF_OK;
|
|
|
891 }
|
|
|
892
|
|
|
893
|
|
|
894 static char *
|
|
|
895 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
896 {
|
|
126
|
897 ngx_http_rewrite_loc_conf_t *lcf = conf;
|
|
50
|
898
|
|
186
|
899 ngx_int_t index;
|
|
|
900 ngx_str_t *value;
|
|
|
901 ngx_http_variable_t *v;
|
|
|
902 ngx_http_script_var_code_t *vcode;
|
|
|
903 ngx_http_script_var_handler_code_t *vhcode;
|
|
50
|
904
|
|
|
905 value = cf->args->elts;
|
|
|
906
|
|
|
907 if (value[1].data[0] != '$') {
|
|
|
908 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
909 "invalid variable name \"%V\"", &value[1]);
|
|
|
910 return NGX_CONF_ERROR;
|
|
|
911 }
|
|
|
912
|
|
|
913 value[1].len--;
|
|
|
914 value[1].data++;
|
|
|
915
|
|
340
|
916 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE);
|
|
50
|
917 if (v == NULL) {
|
|
|
918 return NGX_CONF_ERROR;
|
|
|
919 }
|
|
|
920
|
|
58
|
921 index = ngx_http_get_variable_index(cf, &value[1]);
|
|
|
922 if (index == NGX_ERROR) {
|
|
|
923 return NGX_CONF_ERROR;
|
|
|
924 }
|
|
50
|
925
|
|
300
|
926 if (v->get_handler == NULL
|
|
|
927 && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0
|
|
|
928 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0
|
|
|
929 && ngx_strncasecmp(value[1].data, (u_char *) "upstream_http_", 14) != 0)
|
|
|
930 {
|
|
186
|
931 v->get_handler = ngx_http_rewrite_var;
|
|
104
|
932 v->data = index;
|
|
|
933 }
|
|
58
|
934
|
|
126
|
935 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) {
|
|
|
936 return NGX_CONF_ERROR;
|
|
64
|
937 }
|
|
50
|
938
|
|
186
|
939 if (v->set_handler) {
|
|
|
940 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
941 sizeof(ngx_http_script_var_handler_code_t));
|
|
|
942 if (vhcode == NULL) {
|
|
|
943 return NGX_CONF_ERROR;
|
|
|
944 }
|
|
|
945
|
|
|
946 vhcode->code = ngx_http_script_var_set_handler_code;
|
|
|
947 vhcode->handler = v->set_handler;
|
|
|
948 vhcode->data = v->data;
|
|
|
949
|
|
|
950 return NGX_CONF_OK;
|
|
|
951 }
|
|
|
952
|
|
|
953 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
954 sizeof(ngx_http_script_var_code_t));
|
|
|
955 if (vcode == NULL) {
|
|
50
|
956 return NGX_CONF_ERROR;
|
|
|
957 }
|
|
|
958
|
|
186
|
959 vcode->code = ngx_http_script_set_var_code;
|
|
|
960 vcode->index = (uintptr_t) index;
|
|
50
|
961
|
|
|
962 return NGX_CONF_OK;
|
|
|
963 }
|
|
126
|
964
|
|
|
965
|
|
|
966 static char *
|
|
|
967 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf,
|
|
|
968 ngx_str_t *value)
|
|
|
969 {
|
|
|
970 ngx_int_t n;
|
|
|
971 ngx_http_script_compile_t sc;
|
|
|
972 ngx_http_script_value_code_t *val;
|
|
|
973 ngx_http_script_complex_value_code_t *complex;
|
|
|
974
|
|
|
975 n = ngx_http_script_variables_count(value);
|
|
|
976
|
|
|
977 if (n == 0) {
|
|
|
978 val = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
979 sizeof(ngx_http_script_value_code_t));
|
|
|
980 if (val == NULL) {
|
|
|
981 return NGX_CONF_ERROR;
|
|
|
982 }
|
|
|
983
|
|
|
984 n = ngx_atoi(value->data, value->len);
|
|
|
985
|
|
|
986 if (n == NGX_ERROR) {
|
|
|
987 n = 0;
|
|
|
988 }
|
|
|
989
|
|
|
990 val->code = ngx_http_script_value_code;
|
|
|
991 val->value = (uintptr_t) n;
|
|
|
992 val->text_len = (uintptr_t) value->len;
|
|
|
993 val->text_data = (uintptr_t) value->data;
|
|
|
994
|
|
|
995 return NGX_CONF_OK;
|
|
|
996 }
|
|
|
997
|
|
|
998 complex = ngx_http_script_start_code(cf->pool, &lcf->codes,
|
|
|
999 sizeof(ngx_http_script_complex_value_code_t));
|
|
|
1000 if (complex == NULL) {
|
|
|
1001 return NGX_CONF_ERROR;
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 complex->code = ngx_http_script_complex_value_code;
|
|
|
1005 complex->lengths = NULL;
|
|
|
1006
|
|
|
1007 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
|
1008
|
|
|
1009 sc.cf = cf;
|
|
|
1010 sc.source = value;
|
|
|
1011 sc.lengths = &complex->lengths;
|
|
|
1012 sc.values = &lcf->codes;
|
|
|
1013 sc.variables = n;
|
|
|
1014 sc.complete_lengths = 1;
|
|
|
1015
|
|
|
1016 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
|
1017 return NGX_CONF_ERROR;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 return NGX_CONF_OK;
|
|
|
1021 }
|
