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