0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 ngx_int_t
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13 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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0
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14 {
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56
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15 u_char c, ch, *p, *m;
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0
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16 enum {
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17 sw_start = 0,
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18 sw_method,
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19 sw_space_after_method,
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20 sw_spaces_before_uri,
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21 sw_schema,
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22 sw_schema_slash,
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23 sw_schema_slash_slash,
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24 sw_host,
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25 sw_port,
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26 sw_after_slash_in_uri,
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27 sw_check_uri,
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28 sw_uri,
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29 sw_http_09,
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30 sw_http_H,
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31 sw_http_HT,
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32 sw_http_HTT,
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33 sw_http_HTTP,
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34 sw_first_major_digit,
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35 sw_major_digit,
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36 sw_first_minor_digit,
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37 sw_minor_digit,
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28
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38 sw_almost_done
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0
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39 } state;
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40
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41 state = r->state;
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42
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28
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43 for (p = b->pos; p < b->last; p++) {
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44 ch = *p;
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0
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45
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46 /* gcc 2.95.2 and msvc 6.0 compile this switch as an jump table */
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47
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48 switch (state) {
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49
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50 /* HTTP methods: GET, HEAD, POST */
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51 case sw_start:
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28
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52 r->request_start = p;
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0
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53
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54 if (ch == CR || ch == LF) {
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55 break;
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56 }
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57
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58 if (ch < 'A' || ch > 'Z') {
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59 return NGX_HTTP_PARSE_INVALID_METHOD;
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60 }
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61
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62 state = sw_method;
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63 break;
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64
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65 case sw_method:
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66 if (ch == ' ') {
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58
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67 r->method_end = p - 1;
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0
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68 m = r->request_start;
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69
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28
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70 if (p - m == 3) {
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0
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71
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72 if (m[0] == 'G' && m[1] == 'E' && m[2] == 'T') {
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73 r->method = NGX_HTTP_GET;
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74 }
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75
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28
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76 } else if (p - m == 4) {
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0
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77
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78 if (m[0] == 'P' && m[1] == 'O'
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28
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79 && m[2] == 'S' && m[3] == 'T')
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0
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80 {
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81 r->method = NGX_HTTP_POST;
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82
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83 } else if (m[0] == 'H' && m[1] == 'E'
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84 && m[2] == 'A' && m[3] == 'D')
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85 {
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86 r->method = NGX_HTTP_HEAD;
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87 }
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88 }
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89
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90 state = sw_spaces_before_uri;
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91 break;
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92 }
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93
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94 if (ch < 'A' || ch > 'Z') {
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95 return NGX_HTTP_PARSE_INVALID_METHOD;
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96 }
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97
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98 break;
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99
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100 /* single space after method */
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101 case sw_space_after_method:
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102 switch (ch) {
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103 case ' ':
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104 state = sw_spaces_before_uri;
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105 break;
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106 default:
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107 return NGX_HTTP_PARSE_INVALID_METHOD;
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108 }
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109 break;
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110
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111 /* space* before URI */
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112 case sw_spaces_before_uri:
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56
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113
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114 c = (u_char) (ch | 0x20);
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115 if (c >= 'a' && c <= 'f') {
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38
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116 r->schema_start = p;
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117 state = sw_schema;
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118 break;
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119 }
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120
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0
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121 switch (ch) {
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122 case '/':
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28
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123 r->uri_start = p;
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0
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124 state = sw_after_slash_in_uri;
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125 break;
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126 case ' ':
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127 break;
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128 default:
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129 return NGX_HTTP_PARSE_INVALID_REQUEST;
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130 }
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131 break;
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132
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133 case sw_schema:
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56
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134
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135 c = (u_char) (ch | 0x20);
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136 if (c >= 'a' && c <= 'f') {
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38
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137 break;
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138 }
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139
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0
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140 switch (ch) {
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141 case ':':
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28
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142 r->schema_end = p;
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0
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143 state = sw_schema_slash;
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144 break;
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145 default:
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146 return NGX_HTTP_PARSE_INVALID_REQUEST;
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147 }
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148 break;
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149
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150 case sw_schema_slash:
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151 switch (ch) {
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152 case '/':
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153 state = sw_schema_slash_slash;
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154 break;
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155 default:
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156 return NGX_HTTP_PARSE_INVALID_REQUEST;
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157 }
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158 break;
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159
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160 case sw_schema_slash_slash:
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161 switch (ch) {
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162 case '/':
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28
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163 r->host_start = p;
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0
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164 state = sw_host;
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165 break;
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166 default:
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167 return NGX_HTTP_PARSE_INVALID_REQUEST;
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168 }
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169 break;
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170
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171 case sw_host:
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56
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172
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173 c = (u_char) (ch | 0x20);
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174 if (c >= 'a' && c <= 'f') {
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175 break;
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176 }
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177
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178 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-')
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38
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179 {
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180 break;
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181 }
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182
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0
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183 switch (ch) {
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184 case ':':
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28
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185 r->host_end = p;
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0
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186 state = sw_port;
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187 break;
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188 case '/':
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28
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189 r->host_end = p;
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190 r->uri_start = p;
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0
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191 state = sw_after_slash_in_uri;
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192 break;
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193 default:
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194 return NGX_HTTP_PARSE_INVALID_REQUEST;
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195 }
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196 break;
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197
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198 case sw_port:
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38
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199 if (ch >= '0' && ch <= '9') {
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200 break;
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201 }
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202
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0
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203 switch (ch) {
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204 case '/':
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28
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205 r->port_end = p;
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206 r->uri_start = p;
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0
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207 state = sw_after_slash_in_uri;
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208 break;
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209 default:
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38
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210 return NGX_HTTP_PARSE_INVALID_REQUEST;
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0
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211 }
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212 break;
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213
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10
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214 /* check "/.", "//", "%", and "\" (Win32) in URI */
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0
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215 case sw_after_slash_in_uri:
|
38
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216
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56
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217 c = (u_char) (ch | 0x20);
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218 if (c >= 'a' && c <= 'f') {
|
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219 state = sw_check_uri;
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220 break;
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221 }
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222
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223 if (ch >= '0' && ch <= '9') {
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38
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224 state = sw_check_uri;
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225 break;
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226 }
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227
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0
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228 switch (ch) {
|
38
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229 case ' ':
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230 r->uri_end = p;
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231 state = sw_http_09;
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232 break;
|
0
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233 case CR:
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28
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234 r->uri_end = p;
|
0
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235 r->http_minor = 9;
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236 state = sw_almost_done;
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237 break;
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238 case LF:
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28
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239 r->uri_end = p;
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0
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240 r->http_minor = 9;
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28
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241 goto done;
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0
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242 case '.':
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2
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243 r->complex_uri = 1;
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244 state = sw_uri;
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245 break;
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0
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246 case '%':
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2
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247 r->quoted_uri = 1;
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0
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248 state = sw_uri;
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249 break;
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38
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250 case '/':
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251 r->complex_uri = 1;
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252 state = sw_uri;
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253 break;
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10
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254 #if (NGX_WIN32)
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255 case '\\':
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256 r->complex_uri = 1;
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38
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257 state = sw_uri;
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10
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258 break;
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259 #endif
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38
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260 case '?':
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261 r->args_start = p + 1;
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262 state = sw_uri;
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0
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263 break;
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34
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264 case '+':
|
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265 r->plus_in_uri = 1;
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266 break;
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38
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267 case '\0':
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268 r->zero_in_uri = 1;
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0
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269 break;
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270 default:
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271 state = sw_check_uri;
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272 break;
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273 }
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274 break;
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275
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10
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276 /* check "/", "%" and "\" (Win32) in URI */
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0
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277 case sw_check_uri:
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38
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278
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56
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279 c = (u_char) (ch | 0x20);
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280 if (c >= 'a' && c <= 'f') {
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281 break;
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282 }
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283
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284 if (ch >= '0' && ch <= '9') {
|
38
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285 break;
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286 }
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287
|
0
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288 switch (ch) {
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38
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289 case '/':
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290 r->uri_ext = NULL;
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291 state = sw_after_slash_in_uri;
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292 break;
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293 case '.':
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294 r->uri_ext = p + 1;
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295 break;
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296 case ' ':
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297 r->uri_end = p;
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298 state = sw_http_09;
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299 break;
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0
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300 case CR:
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28
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301 r->uri_end = p;
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0
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302 r->http_minor = 9;
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303 state = sw_almost_done;
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304 break;
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305 case LF:
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28
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306 r->uri_end = p;
|
0
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307 r->http_minor = 9;
|
28
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308 goto done;
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10
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309 #if (NGX_WIN32)
|
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310 case '\\':
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311 r->complex_uri = 1;
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312 state = sw_after_slash_in_uri;
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313 break;
|
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314 #endif
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38
|
315 case '%':
|
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316 r->quoted_uri = 1;
|
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317 state = sw_uri;
|
0
|
318 break;
|
34
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319 case '+':
|
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320 r->plus_in_uri = 1;
|
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321 break;
|
0
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322 case '?':
|
28
|
323 r->args_start = p + 1;
|
0
|
324 state = sw_uri;
|
|
325 break;
|
38
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326 case '\0':
|
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327 r->zero_in_uri = 1;
|
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328 break;
|
0
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329 }
|
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330 break;
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331
|
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332 /* URI */
|
|
333 case sw_uri:
|
|
334 switch (ch) {
|
38
|
335 case ' ':
|
|
336 r->uri_end = p;
|
|
337 state = sw_http_09;
|
|
338 break;
|
0
|
339 case CR:
|
28
|
340 r->uri_end = p;
|
0
|
341 r->http_minor = 9;
|
|
342 state = sw_almost_done;
|
|
343 break;
|
|
344 case LF:
|
28
|
345 r->uri_end = p;
|
0
|
346 r->http_minor = 9;
|
28
|
347 goto done;
|
34
|
348 case '+':
|
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349 r->plus_in_uri = 1;
|
|
350 break;
|
38
|
351 case '\0':
|
|
352 r->zero_in_uri = 1;
|
0
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353 break;
|
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354 }
|
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355 break;
|
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356
|
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357 /* space+ after URI */
|
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358 case sw_http_09:
|
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359 switch (ch) {
|
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360 case ' ':
|
|
361 break;
|
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362 case CR:
|
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363 r->http_minor = 9;
|
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364 state = sw_almost_done;
|
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365 break;
|
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366 case LF:
|
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367 r->http_minor = 9;
|
28
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368 goto done;
|
0
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369 case 'H':
|
28
|
370 r->http_protocol.data = p;
|
0
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371 state = sw_http_H;
|
|
372 break;
|
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373 default:
|
|
374 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
375 }
|
|
376 break;
|
|
377
|
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378 case sw_http_H:
|
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379 switch (ch) {
|
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380 case 'T':
|
|
381 state = sw_http_HT;
|
|
382 break;
|
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383 default:
|
|
384 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
385 }
|
|
386 break;
|
|
387
|
|
388 case sw_http_HT:
|
|
389 switch (ch) {
|
|
390 case 'T':
|
|
391 state = sw_http_HTT;
|
|
392 break;
|
|
393 default:
|
|
394 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
395 }
|
|
396 break;
|
|
397
|
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398 case sw_http_HTT:
|
|
399 switch (ch) {
|
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400 case 'P':
|
|
401 state = sw_http_HTTP;
|
|
402 break;
|
|
403 default:
|
|
404 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
405 }
|
|
406 break;
|
|
407
|
|
408 case sw_http_HTTP:
|
|
409 switch (ch) {
|
|
410 case '/':
|
|
411 state = sw_first_major_digit;
|
|
412 break;
|
|
413 default:
|
|
414 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
415 }
|
|
416 break;
|
|
417
|
|
418 /* first digit of major HTTP version */
|
|
419 case sw_first_major_digit:
|
|
420 if (ch < '1' || ch > '9') {
|
|
421 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
422 }
|
|
423
|
|
424 r->http_major = ch - '0';
|
|
425 state = sw_major_digit;
|
|
426 break;
|
|
427
|
|
428 /* major HTTP version or dot */
|
|
429 case sw_major_digit:
|
|
430 if (ch == '.') {
|
|
431 state = sw_first_minor_digit;
|
|
432 break;
|
|
433 }
|
|
434
|
|
435 if (ch < '0' || ch > '9') {
|
|
436 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
437 }
|
|
438
|
|
439 r->http_major = r->http_major * 10 + ch - '0';
|
|
440 break;
|
|
441
|
|
442 /* first digit of minor HTTP version */
|
|
443 case sw_first_minor_digit:
|
|
444 if (ch < '0' || ch > '9') {
|
|
445 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
446 }
|
|
447
|
|
448 r->http_minor = ch - '0';
|
|
449 state = sw_minor_digit;
|
|
450 break;
|
|
451
|
|
452 /* minor HTTP version or end of request line */
|
|
453 case sw_minor_digit:
|
|
454 if (ch == CR) {
|
|
455 state = sw_almost_done;
|
|
456 break;
|
|
457 }
|
|
458
|
|
459 if (ch == LF) {
|
28
|
460 goto done;
|
0
|
461 }
|
|
462
|
|
463 if (ch < '0' || ch > '9') {
|
|
464 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
465 }
|
|
466
|
|
467 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
468 break;
|
|
469
|
|
470 /* end of request line */
|
|
471 case sw_almost_done:
|
28
|
472 r->request_end = p - 1;
|
0
|
473 switch (ch) {
|
|
474 case LF:
|
28
|
475 goto done;
|
0
|
476 default:
|
|
477 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
478 }
|
|
479 }
|
|
480 }
|
|
481
|
|
482 b->pos = p;
|
28
|
483 r->state = state;
|
0
|
484
|
28
|
485 return NGX_AGAIN;
|
0
|
486
|
28
|
487 done:
|
|
488
|
|
489 b->pos = p + 1;
|
0
|
490
|
28
|
491 if (r->request_end == NULL) {
|
|
492 r->request_end = p;
|
|
493 }
|
0
|
494
|
28
|
495 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
496 r->state = sw_start;
|
0
|
497
|
28
|
498 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
499 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
0
|
500 }
|
28
|
501
|
|
502 return NGX_OK;
|
0
|
503 }
|
|
504
|
|
505
|
58
|
506 ngx_int_t
|
|
507 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
0
|
508 {
|
56
|
509 u_char c, ch, *p;
|
|
510 ngx_uint_t hash;
|
0
|
511 enum {
|
|
512 sw_start = 0,
|
|
513 sw_name,
|
|
514 sw_space_before_value,
|
|
515 sw_value,
|
|
516 sw_space_after_value,
|
52
|
517 sw_ignore_line,
|
0
|
518 sw_almost_done,
|
52
|
519 sw_header_almost_done
|
0
|
520 } state;
|
|
521
|
|
522 state = r->state;
|
56
|
523 hash = r->header_hash;
|
0
|
524
|
28
|
525 for (p = b->pos; p < b->last; p++) {
|
|
526 ch = *p;
|
0
|
527
|
|
528 switch (state) {
|
|
529
|
|
530 /* first char */
|
|
531 case sw_start:
|
|
532 switch (ch) {
|
|
533 case CR:
|
28
|
534 r->header_end = p;
|
0
|
535 state = sw_header_almost_done;
|
|
536 break;
|
|
537 case LF:
|
28
|
538 r->header_end = p;
|
|
539 goto header_done;
|
0
|
540 default:
|
|
541 state = sw_name;
|
28
|
542 r->header_name_start = p;
|
0
|
543
|
|
544 c = (u_char) (ch | 0x20);
|
|
545 if (c >= 'a' && c <= 'z') {
|
56
|
546 hash = c;
|
0
|
547 break;
|
|
548 }
|
|
549
|
|
550 if (ch >= '0' && ch <= '9') {
|
56
|
551 hash = ch;
|
0
|
552 break;
|
|
553 }
|
|
554
|
52
|
555 break;
|
0
|
556
|
|
557 }
|
|
558 break;
|
|
559
|
|
560 /* header name */
|
|
561 case sw_name:
|
|
562 c = (u_char) (ch | 0x20);
|
|
563 if (c >= 'a' && c <= 'z') {
|
56
|
564 hash += c;
|
0
|
565 break;
|
|
566 }
|
|
567
|
|
568 if (ch == ':') {
|
28
|
569 r->header_name_end = p;
|
0
|
570 state = sw_space_before_value;
|
|
571 break;
|
|
572 }
|
|
573
|
52
|
574 if (ch == '-') {
|
56
|
575 hash += ch;
|
0
|
576 break;
|
|
577 }
|
|
578
|
|
579 if (ch >= '0' && ch <= '9') {
|
56
|
580 hash += ch;
|
0
|
581 break;
|
|
582 }
|
|
583
|
58
|
584 if (ch == CR) {
|
|
585 r->header_name_end = p;
|
|
586 r->header_start = p;
|
|
587 r->header_end = p;
|
|
588 state = sw_almost_done;
|
|
589 break;
|
|
590 }
|
|
591
|
|
592 if (ch == LF) {
|
|
593 r->header_name_end = p;
|
|
594 r->header_start = p;
|
|
595 r->header_end = p;
|
|
596 goto done;
|
|
597 }
|
|
598
|
2
|
599 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
0
|
600 if (ch == '/'
|
58
|
601 && r->upstream
|
|
602 && p - r->header_name_start == 4
|
|
603 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
0
|
604 {
|
|
605 state = sw_ignore_line;
|
|
606 break;
|
|
607 }
|
|
608
|
52
|
609 break;
|
0
|
610
|
|
611 /* space* before header value */
|
|
612 case sw_space_before_value:
|
|
613 switch (ch) {
|
|
614 case ' ':
|
|
615 break;
|
|
616 case CR:
|
58
|
617 r->header_start = p;
|
|
618 r->header_end = p;
|
0
|
619 state = sw_almost_done;
|
|
620 break;
|
|
621 case LF:
|
58
|
622 r->header_start = p;
|
|
623 r->header_end = p;
|
28
|
624 goto done;
|
0
|
625 default:
|
28
|
626 r->header_start = p;
|
0
|
627 state = sw_value;
|
|
628 break;
|
|
629 }
|
|
630 break;
|
|
631
|
|
632 /* header value */
|
|
633 case sw_value:
|
|
634 switch (ch) {
|
|
635 case ' ':
|
28
|
636 r->header_end = p;
|
0
|
637 state = sw_space_after_value;
|
|
638 break;
|
|
639 case CR:
|
28
|
640 r->header_end = p;
|
0
|
641 state = sw_almost_done;
|
|
642 break;
|
|
643 case LF:
|
28
|
644 r->header_end = p;
|
|
645 goto done;
|
0
|
646 }
|
|
647 break;
|
|
648
|
|
649 /* space* before end of header line */
|
|
650 case sw_space_after_value:
|
|
651 switch (ch) {
|
|
652 case ' ':
|
|
653 break;
|
|
654 case CR:
|
|
655 state = sw_almost_done;
|
|
656 break;
|
|
657 case LF:
|
28
|
658 goto done;
|
0
|
659 default:
|
|
660 state = sw_value;
|
|
661 break;
|
|
662 }
|
|
663 break;
|
|
664
|
|
665 /* ignore header line */
|
|
666 case sw_ignore_line:
|
|
667 switch (ch) {
|
|
668 case LF:
|
|
669 state = sw_start;
|
|
670 break;
|
|
671 default:
|
|
672 break;
|
|
673 }
|
|
674 break;
|
|
675
|
|
676 /* end of header line */
|
|
677 case sw_almost_done:
|
|
678 switch (ch) {
|
|
679 case LF:
|
28
|
680 goto done;
|
0
|
681 default:
|
|
682 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
683 }
|
|
684
|
|
685 /* end of header */
|
|
686 case sw_header_almost_done:
|
|
687 switch (ch) {
|
|
688 case LF:
|
28
|
689 goto header_done;
|
0
|
690 default:
|
|
691 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
692 }
|
|
693 }
|
|
694 }
|
|
695
|
|
696 b->pos = p;
|
28
|
697 r->state = state;
|
56
|
698 r->header_hash = hash;
|
0
|
699
|
28
|
700 return NGX_AGAIN;
|
|
701
|
|
702 done:
|
|
703
|
|
704 b->pos = p + 1;
|
|
705 r->state = sw_start;
|
56
|
706 r->header_hash = hash;
|
0
|
707
|
28
|
708 return NGX_OK;
|
|
709
|
|
710 header_done:
|
0
|
711
|
28
|
712 b->pos = p + 1;
|
|
713 r->state = sw_start;
|
|
714
|
|
715 return NGX_HTTP_PARSE_HEADER_DONE;
|
0
|
716 }
|
|
717
|
|
718
|
58
|
719 ngx_int_t
|
|
720 ngx_http_parse_complex_uri(ngx_http_request_t *r)
|
0
|
721 {
|
|
722 u_char c, ch, decoded, *p, *u;
|
|
723 enum {
|
|
724 sw_usual = 0,
|
|
725 sw_slash,
|
|
726 sw_dot,
|
|
727 sw_dot_dot,
|
10
|
728 #if (NGX_WIN32)
|
0
|
729 sw_dot_dot_dot,
|
|
730 #endif
|
|
731 sw_quoted,
|
|
732 sw_quoted_second
|
|
733 } state, quoted_state;
|
|
734
|
28
|
735 #if (NGX_SUPPRESS_WARN)
|
0
|
736 decoded = '\0';
|
|
737 quoted_state = sw_usual;
|
28
|
738 #endif
|
0
|
739
|
|
740 state = sw_usual;
|
|
741 p = r->uri_start;
|
|
742 u = r->uri.data;
|
|
743 r->uri_ext = NULL;
|
10
|
744 r->args_start = NULL;
|
0
|
745
|
|
746 ch = *p++;
|
|
747
|
28
|
748 while (p <= r->uri_end) {
|
10
|
749
|
|
750 /*
|
28
|
751 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
10
|
752 * because after the URI there is always at least one charcter:
|
|
753 * the line feed
|
|
754 */
|
0
|
755
|
|
756 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
10
|
757 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
0
|
758
|
|
759 switch (state) {
|
|
760 case sw_usual:
|
|
761 switch(ch) {
|
10
|
762 #if (NGX_WIN32)
|
|
763 case '\\':
|
|
764 r->uri_ext = NULL;
|
|
765
|
|
766 if (p == r->uri_start + r->uri.len) {
|
|
767
|
|
768 /*
|
|
769 * we omit the last "\" to cause redirect because
|
|
770 * the browsers do not treat "\" as "/" in relative URL path
|
|
771 */
|
|
772
|
|
773 break;
|
|
774 }
|
|
775
|
|
776 state = sw_slash;
|
|
777 *u++ = '/';
|
|
778 break;
|
|
779 #endif
|
0
|
780 case '/':
|
|
781 r->uri_ext = NULL;
|
|
782 state = sw_slash;
|
|
783 *u++ = ch;
|
|
784 break;
|
|
785 case '%':
|
|
786 quoted_state = state;
|
|
787 state = sw_quoted;
|
|
788 break;
|
10
|
789 case '?':
|
|
790 r->args_start = p;
|
28
|
791 goto done;
|
0
|
792 case '.':
|
|
793 r->uri_ext = u + 1;
|
22
|
794 *u++ = ch;
|
|
795 break;
|
0
|
796 default:
|
|
797 *u++ = ch;
|
|
798 break;
|
|
799 }
|
|
800 ch = *p++;
|
|
801 break;
|
|
802
|
|
803 case sw_slash:
|
|
804 switch(ch) {
|
10
|
805 #if (NGX_WIN32)
|
|
806 case '\\':
|
|
807 break;
|
|
808 #endif
|
0
|
809 case '/':
|
|
810 break;
|
|
811 case '.':
|
|
812 state = sw_dot;
|
|
813 *u++ = ch;
|
|
814 break;
|
|
815 case '%':
|
|
816 quoted_state = state;
|
|
817 state = sw_quoted;
|
|
818 break;
|
28
|
819 case '?':
|
|
820 r->args_start = p;
|
|
821 goto done;
|
0
|
822 default:
|
|
823 state = sw_usual;
|
|
824 *u++ = ch;
|
|
825 break;
|
|
826 }
|
|
827 ch = *p++;
|
|
828 break;
|
|
829
|
|
830 case sw_dot:
|
|
831 switch(ch) {
|
10
|
832 #if (NGX_WIN32)
|
|
833 case '\\':
|
|
834 /* fall through */
|
|
835 #endif
|
0
|
836 case '/':
|
|
837 state = sw_slash;
|
|
838 u--;
|
|
839 break;
|
|
840 case '.':
|
|
841 state = sw_dot_dot;
|
|
842 *u++ = ch;
|
|
843 break;
|
|
844 case '%':
|
|
845 quoted_state = state;
|
|
846 state = sw_quoted;
|
|
847 break;
|
28
|
848 case '?':
|
|
849 r->args_start = p;
|
|
850 goto done;
|
0
|
851 default:
|
|
852 state = sw_usual;
|
|
853 *u++ = ch;
|
|
854 break;
|
|
855 }
|
|
856 ch = *p++;
|
|
857 break;
|
|
858
|
|
859 case sw_dot_dot:
|
|
860 switch(ch) {
|
10
|
861 #if (NGX_WIN32)
|
|
862 case '\\':
|
|
863 /* fall through */
|
|
864 #endif
|
0
|
865 case '/':
|
|
866 state = sw_slash;
|
|
867 u -= 4;
|
|
868 if (u < r->uri.data) {
|
|
869 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
870 }
|
|
871 while (*(u - 1) != '/') {
|
|
872 u--;
|
|
873 }
|
|
874 break;
|
|
875 case '%':
|
|
876 quoted_state = state;
|
|
877 state = sw_quoted;
|
|
878 break;
|
28
|
879 case '?':
|
|
880 r->args_start = p;
|
|
881 goto done;
|
10
|
882 #if (NGX_WIN32)
|
0
|
883 case '.':
|
|
884 state = sw_dot_dot_dot;
|
|
885 *u++ = ch;
|
|
886 break;
|
|
887 #endif
|
|
888 default:
|
|
889 state = sw_usual;
|
|
890 *u++ = ch;
|
|
891 break;
|
|
892 }
|
|
893 ch = *p++;
|
|
894 break;
|
|
895
|
10
|
896 #if (NGX_WIN32)
|
0
|
897 case sw_dot_dot_dot:
|
|
898 switch(ch) {
|
10
|
899 case '\\':
|
0
|
900 case '/':
|
|
901 state = sw_slash;
|
|
902 u -= 5;
|
|
903 if (u < r->uri.data) {
|
|
904 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
905 }
|
|
906 while (*u != '/') {
|
|
907 u--;
|
|
908 }
|
|
909 if (u < r->uri.data) {
|
|
910 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
911 }
|
|
912 while (*(u - 1) != '/') {
|
|
913 u--;
|
|
914 }
|
|
915 break;
|
|
916 case '%':
|
|
917 quoted_state = state;
|
|
918 state = sw_quoted;
|
|
919 break;
|
|
920 default:
|
|
921 state = sw_usual;
|
|
922 *u++ = ch;
|
|
923 break;
|
|
924 }
|
|
925 ch = *p++;
|
|
926 break;
|
|
927 #endif
|
|
928
|
|
929 case sw_quoted:
|
|
930 if (ch >= '0' && ch <= '9') {
|
|
931 decoded = (u_char) (ch - '0');
|
|
932 state = sw_quoted_second;
|
|
933 ch = *p++;
|
|
934 break;
|
|
935 }
|
|
936
|
|
937 c = (u_char) (ch | 0x20);
|
|
938 if (c >= 'a' && c <= 'f') {
|
|
939 decoded = (u_char) (c - 'a' + 10);
|
|
940 state = sw_quoted_second;
|
|
941 ch = *p++;
|
|
942 break;
|
|
943 }
|
|
944
|
|
945 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
946
|
|
947 case sw_quoted_second:
|
|
948 if (ch >= '0' && ch <= '9') {
|
|
949 ch = (u_char) ((decoded << 4) + ch - '0');
|
38
|
950
|
0
|
951 if (ch == '%') {
|
|
952 state = sw_usual;
|
|
953 *u++ = ch;
|
|
954 ch = *p++;
|
|
955 break;
|
|
956 }
|
38
|
957
|
|
958 if (ch == '\0') {
|
|
959 r->zero_in_uri = 1;
|
|
960 *u++ = ch;
|
|
961 ch = *p++;
|
|
962 }
|
|
963
|
0
|
964 state = quoted_state;
|
|
965 break;
|
|
966 }
|
|
967
|
|
968 c = (u_char) (ch | 0x20);
|
|
969 if (c >= 'a' && c <= 'f') {
|
|
970 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
28
|
971 if (ch == '?') {
|
0
|
972 *u++ = ch;
|
|
973 ch = *p++;
|
|
974 }
|
|
975 state = quoted_state;
|
|
976 break;
|
|
977 }
|
|
978
|
|
979 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
980 }
|
|
981 }
|
|
982
|
28
|
983 done:
|
|
984
|
0
|
985 r->uri.len = u - r->uri.data;
|
|
986 r->uri.data[r->uri.len] = '\0';
|
|
987
|
|
988 if (r->uri_ext) {
|
|
989 r->exten.len = u - r->uri_ext;
|
10
|
990 r->exten.data = r->uri_ext;
|
0
|
991 }
|
|
992
|
|
993 r->uri_ext = NULL;
|
|
994
|
|
995 return NGX_OK;
|
|
996 }
|
58
|
997
|
|
998
|
|
999 ngx_int_t
|
|
1000 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
1001 ngx_str_t *value)
|
|
1002 {
|
|
1003 ngx_uint_t i;
|
|
1004 u_char *start, *last, *end, ch;
|
|
1005 ngx_table_elt_t **h;
|
|
1006
|
|
1007 h = headers->elts;
|
|
1008
|
|
1009 for (i = 0; i < headers->nelts; i++) {
|
|
1010
|
|
1011 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
1012 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
1013
|
|
1014 if (name->len > h[i]->value.len) {
|
|
1015 continue;
|
|
1016 }
|
|
1017
|
|
1018 start = h[i]->value.data;
|
|
1019 end = h[i]->value.data + h[i]->value.len;
|
|
1020
|
|
1021 while (start < end) {
|
|
1022
|
|
1023 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
1024 goto skip;
|
|
1025 }
|
|
1026
|
|
1027 for (start += name->len; start < end && *start == ' '; start++) {
|
|
1028 /* void */
|
|
1029 }
|
|
1030
|
|
1031 if (value == NULL) {
|
|
1032 if (start == end || *start == ',') {
|
|
1033 return i;
|
|
1034 }
|
|
1035
|
|
1036 goto skip;
|
|
1037 }
|
|
1038
|
|
1039 if (start == end || *start++ != '=') {
|
|
1040 /* the invalid header value */
|
|
1041 goto skip;
|
|
1042 }
|
|
1043
|
|
1044 while (start < end && *start == ' ') { start++; }
|
|
1045
|
|
1046 for (last = start; last < end && *last != ';'; last++) {
|
|
1047 /* void */
|
|
1048 }
|
|
1049
|
|
1050 value->len = last - start;
|
|
1051 value->data = start;
|
|
1052
|
|
1053 return i;
|
|
1054
|
|
1055 skip:
|
|
1056 while (start < end) {
|
|
1057 ch = *start++;
|
|
1058 if (ch == ';' || ch == ',') {
|
|
1059 break;
|
|
1060 }
|
|
1061 }
|
|
1062
|
|
1063 while (start < end && *start == ' ') { start++; }
|
|
1064 }
|
|
1065 }
|
|
1066
|
|
1067 return NGX_DECLINED;
|
|
1068 }
|