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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
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8 #define _NGX_HTTP_REQUEST_H_INCLUDED_
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9
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10
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58
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11 #define NGX_HTTP_MAX_REWRITE_CYCLES 10
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12
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13
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0
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14 #define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
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15 #define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
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16
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17
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18 #define NGX_HTTP_VERSION_9 9
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19 #define NGX_HTTP_VERSION_10 1000
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20 #define NGX_HTTP_VERSION_11 1001
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21
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22 #define NGX_HTTP_GET 1
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23 #define NGX_HTTP_HEAD 2
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24 #define NGX_HTTP_POST 3
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25
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26 #define NGX_HTTP_CONNECTION_CLOSE 1
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27 #define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
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28
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29
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30 #define NGX_NONE 1
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31
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32
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33 #define NGX_HTTP_PARSE_HEADER_DONE 1
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34
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35 #define NGX_HTTP_CLIENT_ERROR 10
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36 #define NGX_HTTP_PARSE_INVALID_METHOD 10
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37 #define NGX_HTTP_PARSE_INVALID_REQUEST 11
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54
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38 #define NGX_HTTP_PARSE_INVALID_09_METHOD 12
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0
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39
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54
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40 #define NGX_HTTP_PARSE_HEADER_ERROR 13
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41 #define NGX_HTTP_PARSE_INVALID_HEADER 13
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0
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42
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122
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43 #define NGX_HTTP_ZERO_IN_URI 1
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44
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0
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45
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46 #define NGX_HTTP_OK 200
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60
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47 #define NGX_HTTP_NO_CONTENT 204
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0
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48 #define NGX_HTTP_PARTIAL_CONTENT 206
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49
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50 #define NGX_HTTP_SPECIAL_RESPONSE 300
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51 #define NGX_HTTP_MOVED_PERMANENTLY 301
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52 #define NGX_HTTP_MOVED_TEMPORARILY 302
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53 #define NGX_HTTP_NOT_MODIFIED 304
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54
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55 #define NGX_HTTP_BAD_REQUEST 400
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52
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56 #define NGX_HTTP_UNAUTHORIZED 401
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0
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57 #define NGX_HTTP_FORBIDDEN 403
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58 #define NGX_HTTP_NOT_FOUND 404
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59 #define NGX_HTTP_NOT_ALLOWED 405
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60 #define NGX_HTTP_REQUEST_TIME_OUT 408
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130
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61 #define NGX_HTTP_LENGTH_REQUIRED 411
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0
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62 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
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63 #define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
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64 #define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
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65
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66
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67 /* Our own HTTP codes */
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68
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136
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69 /* The special code to close connection without any response */
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70 #define NGX_HTTP_CLOSE 444
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71
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72 #define NGX_HTTP_OWN_CODES NGX_HTTP_TO_HTTPS
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0
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73
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74 /*
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75 * We use the special code for the plain HTTP requests that are sent to
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126
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76 * HTTPS port to distinguish it from 4XX in an error page redirection
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0
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77 */
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78 #define NGX_HTTP_TO_HTTPS 497
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79
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162
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80 /* 498 is the canceled code for the requests with invalid host name */
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0
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81
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82 /*
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83 * HTTP does not define the code for the case when a client closed
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84 * the connection while we are processing its request so we introduce
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85 * own code to log such situation when a client has closed the connection
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86 * before we even try to send the HTTP header to it
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87 */
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88 #define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
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89
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90
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91 #define NGX_HTTP_INTERNAL_SERVER_ERROR 500
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92 #define NGX_HTTP_NOT_IMPLEMENTED 501
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93 #define NGX_HTTP_BAD_GATEWAY 502
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94 #define NGX_HTTP_SERVICE_UNAVAILABLE 503
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95 #define NGX_HTTP_GATEWAY_TIME_OUT 504
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96
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97
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146
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98 #define NGX_HTTP_LOWLEVEL_BUFFERED 0x000000f0
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99 #define NGX_HTTP_WRITE_BUFFERED 0x00000010
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100 #define NGX_HTTP_GZIP_BUFFERED 0x00000020
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101 #define NGX_HTTP_SSI_BUFFERED 0x00000100
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102 #define NGX_HTTP_COPY_BUFFERED 0x00000200
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103
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104
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0
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105 typedef enum {
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106 NGX_HTTP_INITING_REQUEST_STATE = 0,
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107 NGX_HTTP_READING_REQUEST_STATE,
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108 NGX_HTTP_PROCESS_REQUEST_STATE,
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109
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110 NGX_HTTP_CONNECT_UPSTREAM_STATE,
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111 NGX_HTTP_WRITING_UPSTREAM_STATE,
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112 NGX_HTTP_READING_UPSTREAM_STATE,
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113
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114 NGX_HTTP_WRITING_REQUEST_STATE,
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115 NGX_HTTP_LINGERING_CLOSE_STATE,
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116 NGX_HTTP_KEEPALIVE_STATE
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117 } ngx_http_state_e;
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118
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119
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120 typedef struct {
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50
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121 ngx_str_t name;
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122 ngx_uint_t offset;
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58
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123 ngx_http_header_handler_pt handler;
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0
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124 } ngx_http_header_t;
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125
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126
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127 typedef struct {
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58
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128 ngx_str_t name;
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129 ngx_uint_t offset;
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118
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130 } ngx_http_header_out_t;
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58
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131
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132
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133 typedef struct {
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50
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134 ngx_list_t headers;
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0
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135
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50
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136 ngx_table_elt_t *host;
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137 ngx_table_elt_t *connection;
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138 ngx_table_elt_t *if_modified_since;
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139 ngx_table_elt_t *user_agent;
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140 ngx_table_elt_t *referer;
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141 ngx_table_elt_t *content_length;
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142 ngx_table_elt_t *content_type;
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0
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143
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50
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144 ngx_table_elt_t *range;
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0
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145
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130
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146 ngx_table_elt_t *transfer_encoding;
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147
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0
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148 #if (NGX_HTTP_GZIP)
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50
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149 ngx_table_elt_t *accept_encoding;
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150 ngx_table_elt_t *via;
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0
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151 #endif
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152
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50
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153 ngx_table_elt_t *authorization;
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0
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154
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50
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155 ngx_table_elt_t *keep_alive;
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0
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156
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122
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157 #if (NGX_HTTP_PROXY || NGX_HTTP_REALIP)
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50
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158 ngx_table_elt_t *x_forwarded_for;
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0
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159 #endif
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160
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122
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161 #if (NGX_HTTP_REALIP)
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162 ngx_table_elt_t *x_real_ip;
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163 #endif
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164
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38
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165 #if (NGX_HTTP_HEADERS)
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50
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166 ngx_table_elt_t *accept;
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167 ngx_table_elt_t *accept_language;
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38
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168 #endif
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169
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52
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170 ngx_str_t user;
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171 ngx_str_t passwd;
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172
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50
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173 ngx_array_t cookies;
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174
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175 size_t host_name_len;
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176 ssize_t content_length_n;
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177 time_t keep_alive_n;
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0
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178
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50
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179 unsigned connection_type:2;
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180 unsigned msie:1;
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181 unsigned msie4:1;
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182 unsigned opera:1;
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183 unsigned gecko:1;
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184 unsigned konqueror:1;
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0
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185 } ngx_http_headers_in_t;
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186
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187
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188 typedef struct {
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50
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189 off_t start;
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190 off_t end;
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191 ngx_str_t content_range;
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0
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192 } ngx_http_range_t;
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193
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194
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195 typedef struct {
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50
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196 ngx_list_t headers;
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0
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197
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50
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198 ngx_uint_t status;
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199 ngx_str_t status_line;
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0
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200
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50
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201 ngx_table_elt_t *server;
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202 ngx_table_elt_t *date;
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203 ngx_table_elt_t *content_length;
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204 ngx_table_elt_t *content_encoding;
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205 ngx_table_elt_t *location;
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206 ngx_table_elt_t *last_modified;
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207 ngx_table_elt_t *content_range;
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208 ngx_table_elt_t *accept_ranges;
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52
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209 ngx_table_elt_t *www_authenticate;
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50
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210 ngx_table_elt_t *expires;
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211 ngx_table_elt_t *etag;
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0
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212
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58
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213 ngx_str_t content_type;
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50
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214 ngx_str_t charset;
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215 ngx_array_t ranges;
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0
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216
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58
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217 ngx_array_t cache_control;
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218
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50
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219 off_t content_length_n;
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220 time_t date_time;
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221 time_t last_modified_time;
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0
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222 } ngx_http_headers_out_t;
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223
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224
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28
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225 typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
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226
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0
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227 typedef struct {
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28
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228 ngx_temp_file_t *temp_file;
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229 ngx_chain_t *bufs;
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230 ngx_buf_t *buf;
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231 size_t rest;
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232 ngx_http_client_body_handler_pt post_handler;
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0
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233 } ngx_http_request_body_t;
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234
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235
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236 typedef struct {
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50
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237 ngx_http_request_t *request;
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0
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238
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50
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239 ngx_buf_t **busy;
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240 ngx_int_t nbusy;
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0
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241
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50
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242 ngx_buf_t **free;
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243 ngx_int_t nfree;
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0
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244
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50
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245 ngx_uint_t pipeline; /* unsigned pipeline:1; */
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0
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246 } ngx_http_connection_t;
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247
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248
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142
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249 typedef struct {
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250 ngx_hash_t hash;
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251 ngx_hash_wildcard_t *dns_wildcards;
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252 } ngx_http_virtual_names_t;
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253
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254
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118
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255 typedef void (*ngx_http_cleanup_pt)(void *data);
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256
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257 typedef struct ngx_http_cleanup_s ngx_http_cleanup_t;
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258
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259 struct ngx_http_cleanup_s {
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142
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260 ngx_http_cleanup_pt handler;
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261 void *data;
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262 ngx_http_cleanup_t *next;
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118
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263 };
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264
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265
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58
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266 typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
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267
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268 struct ngx_http_postponed_request_s {
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84
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269 ngx_http_request_t *request;
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270 ngx_chain_t *out;
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271 ngx_http_postponed_request_t *next;
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58
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272 };
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273
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274
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0
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275 typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
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58
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276 typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
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277
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0
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278
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279 struct ngx_http_request_s {
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50
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280 uint32_t signature; /* "HTTP" */
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0
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281
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50
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282 ngx_connection_t *connection;
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0
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283
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50
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284 void **ctx;
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285 void **main_conf;
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286 void **srv_conf;
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287 void **loc_conf;
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0
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288
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58
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289 ngx_http_event_handler_pt read_event_handler;
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290 ngx_http_event_handler_pt write_event_handler;
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291
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50
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292 ngx_http_cache_t *cache;
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0
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293
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50
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294 ngx_http_upstream_t *upstream;
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28
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295
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50
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296 ngx_pool_t *pool;
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297 ngx_buf_t *header_in;
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0
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298
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50
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299 ngx_http_headers_in_t headers_in;
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300 ngx_http_headers_out_t headers_out;
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0
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301
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50
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302 ngx_http_request_body_t *request_body;
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0
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303
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50
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304 time_t lingering_time;
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305 time_t start_time;
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0
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306
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50
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307 ngx_uint_t method;
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308 ngx_uint_t http_version;
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309 ngx_uint_t http_major;
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310 ngx_uint_t http_minor;
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126
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311
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50
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312 ngx_str_t request_line;
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313 ngx_str_t uri;
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314 ngx_str_t args;
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315 ngx_str_t exten;
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316 ngx_str_t unparsed_uri;
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0
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317
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50
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318 ngx_str_t method_name;
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319 ngx_str_t http_protocol;
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126
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320
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58
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321 ngx_chain_t *out;
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50
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322 ngx_http_request_t *main;
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58
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323 ngx_http_request_t *parent;
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324 ngx_http_postponed_request_t *postponed;
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0
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325
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50
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326 uint32_t in_addr;
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327 ngx_uint_t port;
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328 ngx_str_t *port_text; /* ":80" */
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329 ngx_str_t server_name;
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142
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330 ngx_http_virtual_names_t *virtual_names;
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0
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331
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50
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332 ngx_uint_t phase;
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333 ngx_int_t phase_handler;
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334 ngx_http_handler_pt content_handler;
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92
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335 ngx_uint_t access_code;
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34
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336
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122
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337 ngx_http_variable_value_t *variables;
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50
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338
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144
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339 size_t root_length;
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340
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76
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341 size_t limit_rate;
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342
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0
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343 /* used to learn the Apache compatible response length without a header */
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50
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344 size_t header_size;
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0
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345
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50
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346 size_t request_length;
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24
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347
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50
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348 void **err_ctx;
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349 ngx_uint_t err_status;
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0
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350
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50
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351 ngx_http_connection_t *http_connection;
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0
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352
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58
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353 ngx_http_log_handler_pt log_handler;
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354
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118
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355 ngx_http_cleanup_t *cleanup;
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356
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50
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357 unsigned http_state:4;
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0
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358
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2
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359 /* URI with "/." and on Win32 with "//" */
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50
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360 unsigned complex_uri:1;
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34
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361
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2
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362 /* URI with "%" */
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50
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363 unsigned quoted_uri:1;
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34
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364
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365 /* URI with "+" */
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50
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366 unsigned plus_in_uri:1;
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34
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367
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38
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368 /* URI with "\0" or "%00" */
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50
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369 unsigned zero_in_uri:1;
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38
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370
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60
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371 unsigned invalid_header:1;
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372
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58
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373 unsigned valid_location:1;
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54
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374 unsigned valid_unparsed_uri:1;
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50
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375 unsigned uri_changed:1;
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376 unsigned uri_changes:4;
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34
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377
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146
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378 unsigned fast_subrequest:1;
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379
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50
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380 unsigned low_case_exten:1;
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381 unsigned header_timeout_set:1;
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0
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382
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50
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383 unsigned proxy:1;
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384 unsigned bypass_cache:1;
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385 unsigned no_cache:1;
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0
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386
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122
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387 #if (NGX_HTTP_REALIP)
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388
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389 /*
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390 * instead of using the request context data in ngx_http_realip_module
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391 * we use the single bit in the request structure
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392 */
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393 unsigned realip_set:1;
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394
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395 #endif
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396
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0
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397 #if 0
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50
|
398 unsigned cachable:1;
|
|
0
|
399 #endif
|
|
58
|
400
|
|
50
|
401 unsigned pipeline:1;
|
|
|
402 unsigned plain_http:1;
|
|
|
403 unsigned chunked:1;
|
|
|
404 unsigned header_only:1;
|
|
|
405 unsigned keepalive:1;
|
|
|
406 unsigned lingering_close:1;
|
|
86
|
407 unsigned discard_body:1;
|
|
58
|
408 unsigned internal:1;
|
|
|
409 unsigned done:1;
|
|
72
|
410 unsigned utf8:1;
|
|
0
|
411
|
|
62
|
412 unsigned main_filter_need_in_memory:1;
|
|
50
|
413 unsigned filter_need_in_memory:1;
|
|
|
414 unsigned filter_need_temporary:1;
|
|
130
|
415 unsigned allow_ranges:1;
|
|
0
|
416
|
|
|
417 #if (NGX_STAT_STUB)
|
|
50
|
418 unsigned stat_reading:1;
|
|
|
419 unsigned stat_writing:1;
|
|
0
|
420 #endif
|
|
|
421
|
|
|
422 /* used to parse HTTP headers */
|
|
50
|
423 ngx_uint_t state;
|
|
|
424 u_char *uri_start;
|
|
|
425 u_char *uri_end;
|
|
|
426 u_char *uri_ext;
|
|
|
427 u_char *args_start;
|
|
|
428 u_char *request_start;
|
|
|
429 u_char *request_end;
|
|
|
430 u_char *method_end;
|
|
|
431 u_char *schema_start;
|
|
|
432 u_char *schema_end;
|
|
|
433 u_char *host_start;
|
|
|
434 u_char *host_end;
|
|
|
435 u_char *port_start;
|
|
|
436 u_char *port_end;
|
|
|
437 u_char *header_name_start;
|
|
|
438 u_char *header_name_end;
|
|
|
439 u_char *header_start;
|
|
|
440 u_char *header_end;
|
|
56
|
441 ngx_uint_t header_hash;
|
|
0
|
442 };
|
|
|
443
|
|
|
444
|
|
118
|
445 extern ngx_http_header_t ngx_http_headers_in[];
|
|
|
446 extern ngx_http_header_out_t ngx_http_headers_out[];
|
|
0
|
447
|
|
|
448
|
|
|
449 #endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */
|
