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