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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 break;
|
|
|
465 }
|
|
|
466 }
|
|
|
467
|
|
|
468 b->pos = p;
|
|
28
|
469 r->state = state;
|
|
0
|
470
|
|
28
|
471 return NGX_AGAIN;
|
|
0
|
472
|
|
28
|
473 done:
|
|
|
474
|
|
|
475 b->pos = p + 1;
|
|
0
|
476
|
|
28
|
477 if (r->request_end == NULL) {
|
|
|
478 r->request_end = p;
|
|
|
479 }
|
|
0
|
480
|
|
28
|
481 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
482 r->state = sw_start;
|
|
0
|
483
|
|
28
|
484 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
485 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
486 }
|
|
28
|
487
|
|
|
488 return NGX_OK;
|
|
0
|
489 }
|
|
|
490
|
|
|
491
|
|
|
492 ngx_int_t ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
|
493 {
|
|
|
494 u_char c, ch, *p;
|
|
|
495 enum {
|
|
|
496 sw_start = 0,
|
|
|
497 sw_name,
|
|
|
498 sw_space_before_value,
|
|
|
499 sw_value,
|
|
|
500 sw_space_after_value,
|
|
|
501 sw_almost_done,
|
|
|
502 sw_header_almost_done,
|
|
28
|
503 sw_ignore_line
|
|
0
|
504 } state;
|
|
|
505
|
|
|
506 state = r->state;
|
|
|
507
|
|
28
|
508 for (p = b->pos; p < b->last; p++) {
|
|
|
509 ch = *p;
|
|
0
|
510
|
|
|
511 switch (state) {
|
|
|
512
|
|
|
513 /* first char */
|
|
|
514 case sw_start:
|
|
|
515 switch (ch) {
|
|
|
516 case CR:
|
|
28
|
517 r->header_end = p;
|
|
0
|
518 state = sw_header_almost_done;
|
|
|
519 break;
|
|
|
520 case LF:
|
|
28
|
521 r->header_end = p;
|
|
|
522 goto header_done;
|
|
0
|
523 default:
|
|
|
524 state = sw_name;
|
|
28
|
525 r->header_name_start = p;
|
|
0
|
526
|
|
|
527 c = (u_char) (ch | 0x20);
|
|
|
528 if (c >= 'a' && c <= 'z') {
|
|
|
529 break;
|
|
|
530 }
|
|
|
531
|
|
|
532 if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
|
|
533 break;
|
|
|
534 }
|
|
|
535
|
|
|
536 if (ch >= '0' && ch <= '9') {
|
|
|
537 break;
|
|
|
538 }
|
|
|
539
|
|
|
540 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
541
|
|
|
542 }
|
|
|
543 break;
|
|
|
544
|
|
|
545 /* header name */
|
|
|
546 case sw_name:
|
|
|
547 c = (u_char) (ch | 0x20);
|
|
|
548 if (c >= 'a' && c <= 'z') {
|
|
|
549 break;
|
|
|
550 }
|
|
|
551
|
|
|
552 if (ch == ':') {
|
|
28
|
553 r->header_name_end = p;
|
|
0
|
554 state = sw_space_before_value;
|
|
|
555 break;
|
|
|
556 }
|
|
|
557
|
|
|
558 if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
|
|
559 break;
|
|
|
560 }
|
|
|
561
|
|
|
562 if (ch >= '0' && ch <= '9') {
|
|
|
563 break;
|
|
|
564 }
|
|
|
565
|
|
2
|
566 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
567 if (ch == '/'
|
|
|
568 && r->proxy
|
|
28
|
569 && p - r->header_start == 4
|
|
0
|
570 && ngx_strncmp(r->header_start, "HTTP", 4) == 0)
|
|
|
571 {
|
|
|
572 state = sw_ignore_line;
|
|
|
573 break;
|
|
|
574 }
|
|
|
575
|
|
|
576 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
577
|
|
|
578 /* space* before header value */
|
|
|
579 case sw_space_before_value:
|
|
|
580 switch (ch) {
|
|
|
581 case ' ':
|
|
|
582 break;
|
|
|
583 case CR:
|
|
28
|
584 r->header_start = r->header_end = p;
|
|
0
|
585 state = sw_almost_done;
|
|
|
586 break;
|
|
|
587 case LF:
|
|
28
|
588 r->header_start = r->header_end = p;
|
|
|
589 goto done;
|
|
0
|
590 default:
|
|
28
|
591 r->header_start = p;
|
|
0
|
592 state = sw_value;
|
|
|
593 break;
|
|
|
594 }
|
|
|
595 break;
|
|
|
596
|
|
|
597 /* header value */
|
|
|
598 case sw_value:
|
|
|
599 switch (ch) {
|
|
|
600 case ' ':
|
|
28
|
601 r->header_end = p;
|
|
0
|
602 state = sw_space_after_value;
|
|
|
603 break;
|
|
|
604 case CR:
|
|
28
|
605 r->header_end = p;
|
|
0
|
606 state = sw_almost_done;
|
|
|
607 break;
|
|
|
608 case LF:
|
|
28
|
609 r->header_end = p;
|
|
|
610 goto done;
|
|
0
|
611 }
|
|
|
612 break;
|
|
|
613
|
|
|
614 /* space* before end of header line */
|
|
|
615 case sw_space_after_value:
|
|
|
616 switch (ch) {
|
|
|
617 case ' ':
|
|
|
618 break;
|
|
|
619 case CR:
|
|
|
620 state = sw_almost_done;
|
|
|
621 break;
|
|
|
622 case LF:
|
|
28
|
623 goto done;
|
|
0
|
624 default:
|
|
|
625 state = sw_value;
|
|
|
626 break;
|
|
|
627 }
|
|
|
628 break;
|
|
|
629
|
|
|
630 /* ignore header line */
|
|
|
631 case sw_ignore_line:
|
|
|
632 switch (ch) {
|
|
|
633 case LF:
|
|
|
634 state = sw_start;
|
|
|
635 break;
|
|
|
636 default:
|
|
|
637 break;
|
|
|
638 }
|
|
|
639 break;
|
|
|
640
|
|
|
641 /* end of header line */
|
|
|
642 case sw_almost_done:
|
|
|
643 switch (ch) {
|
|
|
644 case LF:
|
|
28
|
645 goto done;
|
|
0
|
646 default:
|
|
|
647 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
648 }
|
|
|
649 break;
|
|
|
650
|
|
|
651 /* end of header */
|
|
|
652 case sw_header_almost_done:
|
|
|
653 switch (ch) {
|
|
|
654 case LF:
|
|
28
|
655 goto header_done;
|
|
0
|
656 default:
|
|
|
657 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
658 }
|
|
|
659 break;
|
|
|
660 }
|
|
|
661 }
|
|
|
662
|
|
|
663 b->pos = p;
|
|
28
|
664 r->state = state;
|
|
0
|
665
|
|
28
|
666 return NGX_AGAIN;
|
|
|
667
|
|
|
668 done:
|
|
|
669
|
|
|
670 b->pos = p + 1;
|
|
|
671 r->state = sw_start;
|
|
0
|
672
|
|
28
|
673 return NGX_OK;
|
|
|
674
|
|
|
675 header_done:
|
|
0
|
676
|
|
28
|
677 b->pos = p + 1;
|
|
|
678 r->state = sw_start;
|
|
|
679
|
|
|
680 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
681 }
|
|
|
682
|
|
|
683
|
|
|
684 ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r)
|
|
|
685 {
|
|
|
686 u_char c, ch, decoded, *p, *u;
|
|
|
687 enum {
|
|
|
688 sw_usual = 0,
|
|
22
|
689 sw_colon,
|
|
|
690 sw_colon_slash,
|
|
0
|
691 sw_slash,
|
|
|
692 sw_dot,
|
|
|
693 sw_dot_dot,
|
|
10
|
694 #if (NGX_WIN32)
|
|
0
|
695 sw_dot_dot_dot,
|
|
|
696 #endif
|
|
|
697 sw_quoted,
|
|
|
698 sw_quoted_second
|
|
|
699 } state, quoted_state;
|
|
|
700
|
|
28
|
701 #if (NGX_SUPPRESS_WARN)
|
|
0
|
702 decoded = '\0';
|
|
|
703 quoted_state = sw_usual;
|
|
28
|
704 #endif
|
|
0
|
705
|
|
|
706 state = sw_usual;
|
|
|
707 p = r->uri_start;
|
|
|
708 u = r->uri.data;
|
|
|
709 r->uri_ext = NULL;
|
|
10
|
710 r->args_start = NULL;
|
|
0
|
711
|
|
|
712 ch = *p++;
|
|
|
713
|
|
28
|
714 while (p <= r->uri_end) {
|
|
10
|
715
|
|
|
716 /*
|
|
28
|
717 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
718 * because after the URI there is always at least one charcter:
|
|
|
719 * the line feed
|
|
|
720 */
|
|
0
|
721
|
|
|
722 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
723 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
724
|
|
|
725 switch (state) {
|
|
|
726 case sw_usual:
|
|
|
727 switch(ch) {
|
|
10
|
728 #if (NGX_WIN32)
|
|
|
729 case '\\':
|
|
|
730 r->uri_ext = NULL;
|
|
|
731
|
|
|
732 if (p == r->uri_start + r->uri.len) {
|
|
|
733
|
|
|
734 /*
|
|
|
735 * we omit the last "\" to cause redirect because
|
|
|
736 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
737 */
|
|
|
738
|
|
|
739 break;
|
|
|
740 }
|
|
|
741
|
|
|
742 state = sw_slash;
|
|
|
743 *u++ = '/';
|
|
|
744 break;
|
|
|
745 #endif
|
|
0
|
746 case '/':
|
|
|
747 r->uri_ext = NULL;
|
|
|
748 state = sw_slash;
|
|
|
749 *u++ = ch;
|
|
|
750 break;
|
|
|
751 case '%':
|
|
|
752 quoted_state = state;
|
|
|
753 state = sw_quoted;
|
|
|
754 break;
|
|
10
|
755 case '?':
|
|
|
756 r->args_start = p;
|
|
28
|
757 goto done;
|
|
22
|
758 case ':':
|
|
|
759 state = sw_colon;
|
|
|
760 *u++ = ch;
|
|
|
761 break;
|
|
0
|
762 case '.':
|
|
|
763 r->uri_ext = u + 1;
|
|
22
|
764 *u++ = ch;
|
|
|
765 break;
|
|
0
|
766 default:
|
|
|
767 *u++ = ch;
|
|
|
768 break;
|
|
|
769 }
|
|
|
770 ch = *p++;
|
|
|
771 break;
|
|
|
772
|
|
22
|
773 case sw_colon:
|
|
|
774 switch(ch) {
|
|
|
775 #if (NGX_WIN32)
|
|
|
776 case '\\':
|
|
|
777 state = sw_colon_slash;
|
|
|
778 *u++ = '/';
|
|
|
779 break;
|
|
|
780 #endif
|
|
|
781 case '/':
|
|
|
782 state = sw_colon_slash;
|
|
|
783 *u++ = ch;
|
|
|
784 break;
|
|
|
785 case ':':
|
|
|
786 *u++ = ch;
|
|
|
787 break;
|
|
|
788 case '%':
|
|
|
789 quoted_state = state;
|
|
|
790 state = sw_quoted;
|
|
|
791 break;
|
|
28
|
792 case '?':
|
|
|
793 r->args_start = p;
|
|
|
794 goto done;
|
|
22
|
795 default:
|
|
|
796 state = sw_usual;
|
|
|
797 *u++ = ch;
|
|
|
798 break;
|
|
|
799 }
|
|
|
800 ch = *p++;
|
|
|
801 break;
|
|
|
802
|
|
|
803 case sw_colon_slash:
|
|
|
804 switch(ch) {
|
|
|
805 #if (NGX_WIN32)
|
|
|
806 case '\\':
|
|
|
807 state = sw_slash;
|
|
|
808 *u++ = '/';
|
|
|
809 break;
|
|
|
810 #endif
|
|
|
811 case '/':
|
|
|
812 state = sw_slash;
|
|
|
813 *u++ = ch;
|
|
|
814 break;
|
|
|
815 case '.':
|
|
|
816 state = sw_dot;
|
|
|
817 *u++ = ch;
|
|
|
818 break;
|
|
|
819 case '%':
|
|
|
820 quoted_state = state;
|
|
|
821 state = sw_quoted;
|
|
|
822 break;
|
|
28
|
823 case '?':
|
|
|
824 r->args_start = p;
|
|
|
825 goto done;
|
|
22
|
826 default:
|
|
|
827 state = sw_usual;
|
|
|
828 *u++ = ch;
|
|
|
829 break;
|
|
|
830 }
|
|
|
831 ch = *p++;
|
|
|
832 break;
|
|
|
833
|
|
0
|
834 case sw_slash:
|
|
|
835 switch(ch) {
|
|
10
|
836 #if (NGX_WIN32)
|
|
|
837 case '\\':
|
|
|
838 break;
|
|
|
839 #endif
|
|
0
|
840 case '/':
|
|
|
841 break;
|
|
|
842 case '.':
|
|
|
843 state = sw_dot;
|
|
|
844 *u++ = ch;
|
|
|
845 break;
|
|
|
846 case '%':
|
|
|
847 quoted_state = state;
|
|
|
848 state = sw_quoted;
|
|
|
849 break;
|
|
28
|
850 case '?':
|
|
|
851 r->args_start = p;
|
|
|
852 goto done;
|
|
0
|
853 default:
|
|
|
854 state = sw_usual;
|
|
|
855 *u++ = ch;
|
|
|
856 break;
|
|
|
857 }
|
|
|
858 ch = *p++;
|
|
|
859 break;
|
|
|
860
|
|
|
861 case sw_dot:
|
|
|
862 switch(ch) {
|
|
10
|
863 #if (NGX_WIN32)
|
|
|
864 case '\\':
|
|
|
865 /* fall through */
|
|
|
866 #endif
|
|
0
|
867 case '/':
|
|
|
868 state = sw_slash;
|
|
|
869 u--;
|
|
|
870 break;
|
|
|
871 case '.':
|
|
|
872 state = sw_dot_dot;
|
|
|
873 *u++ = ch;
|
|
|
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;
|
|
0
|
882 default:
|
|
|
883 state = sw_usual;
|
|
|
884 *u++ = ch;
|
|
|
885 break;
|
|
|
886 }
|
|
|
887 ch = *p++;
|
|
|
888 break;
|
|
|
889
|
|
|
890 case sw_dot_dot:
|
|
|
891 switch(ch) {
|
|
10
|
892 #if (NGX_WIN32)
|
|
|
893 case '\\':
|
|
|
894 /* fall through */
|
|
|
895 #endif
|
|
0
|
896 case '/':
|
|
|
897 state = sw_slash;
|
|
|
898 u -= 4;
|
|
|
899 if (u < r->uri.data) {
|
|
|
900 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
901 }
|
|
|
902 while (*(u - 1) != '/') {
|
|
|
903 u--;
|
|
|
904 }
|
|
|
905 break;
|
|
|
906 case '%':
|
|
|
907 quoted_state = state;
|
|
|
908 state = sw_quoted;
|
|
|
909 break;
|
|
28
|
910 case '?':
|
|
|
911 r->args_start = p;
|
|
|
912 goto done;
|
|
10
|
913 #if (NGX_WIN32)
|
|
0
|
914 case '.':
|
|
|
915 state = sw_dot_dot_dot;
|
|
|
916 *u++ = ch;
|
|
|
917 break;
|
|
|
918 #endif
|
|
|
919 default:
|
|
|
920 state = sw_usual;
|
|
|
921 *u++ = ch;
|
|
|
922 break;
|
|
|
923 }
|
|
|
924 ch = *p++;
|
|
|
925 break;
|
|
|
926
|
|
10
|
927 #if (NGX_WIN32)
|
|
0
|
928 case sw_dot_dot_dot:
|
|
|
929 switch(ch) {
|
|
10
|
930 case '\\':
|
|
0
|
931 case '/':
|
|
|
932 state = sw_slash;
|
|
|
933 u -= 5;
|
|
|
934 if (u < r->uri.data) {
|
|
|
935 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
936 }
|
|
|
937 while (*u != '/') {
|
|
|
938 u--;
|
|
|
939 }
|
|
|
940 if (u < r->uri.data) {
|
|
|
941 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
942 }
|
|
|
943 while (*(u - 1) != '/') {
|
|
|
944 u--;
|
|
|
945 }
|
|
|
946 break;
|
|
|
947 case '%':
|
|
|
948 quoted_state = state;
|
|
|
949 state = sw_quoted;
|
|
|
950 break;
|
|
|
951 default:
|
|
|
952 state = sw_usual;
|
|
|
953 *u++ = ch;
|
|
|
954 break;
|
|
|
955 }
|
|
|
956 ch = *p++;
|
|
|
957 break;
|
|
|
958 #endif
|
|
|
959
|
|
|
960 case sw_quoted:
|
|
|
961 if (ch >= '0' && ch <= '9') {
|
|
|
962 decoded = (u_char) (ch - '0');
|
|
|
963 state = sw_quoted_second;
|
|
|
964 ch = *p++;
|
|
|
965 break;
|
|
|
966 }
|
|
|
967
|
|
|
968 c = (u_char) (ch | 0x20);
|
|
|
969 if (c >= 'a' && c <= 'f') {
|
|
|
970 decoded = (u_char) (c - 'a' + 10);
|
|
|
971 state = sw_quoted_second;
|
|
|
972 ch = *p++;
|
|
|
973 break;
|
|
|
974 }
|
|
|
975
|
|
|
976 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
977
|
|
|
978 case sw_quoted_second:
|
|
|
979 if (ch >= '0' && ch <= '9') {
|
|
|
980 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
981
|
|
0
|
982 if (ch == '%') {
|
|
|
983 state = sw_usual;
|
|
|
984 *u++ = ch;
|
|
|
985 ch = *p++;
|
|
|
986 break;
|
|
|
987 }
|
|
38
|
988
|
|
|
989 if (ch == '\0') {
|
|
|
990 r->zero_in_uri = 1;
|
|
|
991 *u++ = ch;
|
|
|
992 ch = *p++;
|
|
|
993 }
|
|
|
994
|
|
0
|
995 state = quoted_state;
|
|
|
996 break;
|
|
|
997 }
|
|
|
998
|
|
|
999 c = (u_char) (ch | 0x20);
|
|
|
1000 if (c >= 'a' && c <= 'f') {
|
|
|
1001 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
28
|
1002 if (ch == '?') {
|
|
0
|
1003 *u++ = ch;
|
|
|
1004 ch = *p++;
|
|
|
1005 }
|
|
|
1006 state = quoted_state;
|
|
|
1007 break;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1011 }
|
|
|
1012 }
|
|
|
1013
|
|
28
|
1014 done:
|
|
|
1015
|
|
0
|
1016 r->uri.len = u - r->uri.data;
|
|
|
1017 r->uri.data[r->uri.len] = '\0';
|
|
|
1018
|
|
|
1019 if (r->uri_ext) {
|
|
|
1020 r->exten.len = u - r->uri_ext;
|
|
10
|
1021 r->exten.data = r->uri_ext;
|
|
0
|
1022 }
|
|
|
1023
|
|
|
1024 r->uri_ext = NULL;
|
|
|
1025
|
|
|
1026 return NGX_OK;
|
|
|
1027 }
|
