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