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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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254
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12 static uint32_t usual[] = {
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13 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
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14
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15 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
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16 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
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17
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18 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
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19 #if (NGX_WIN32)
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20 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
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21 #else
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22 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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23 #endif
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24
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25 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
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26 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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27
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28 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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29 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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30 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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31 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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32 };
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33
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34
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300
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35 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
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36
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37 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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38 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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39
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40 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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41 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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42
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43 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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44 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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45
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46 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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47 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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48 && m[4] == c4
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49
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50 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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51 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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52 && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
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53
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54 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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55 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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56 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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57
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58 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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59 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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60 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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61
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62 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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63 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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64 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
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65 && m[8] == c8
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66
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67 #else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
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68
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69 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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70 m[0] == c0 && m[1] == c1 && m[2] == c2
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71
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72 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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73 m[0] == c0 && m[2] == c2 && m[3] == c3
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74
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75 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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76 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
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77
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78 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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79 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
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80
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81 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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82 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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83 && m[4] == c4 && m[5] == c5
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84
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85 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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86 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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87 && m[4] == c4 && m[5] == c5 && m[6] == c6
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88
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89 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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90 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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91 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
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92
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93 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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94 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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95 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
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96
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97 #endif
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98
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99
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198
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100 /* gcc, icc, msvc and others compile these switches as an jump table */
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101
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58
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102 ngx_int_t
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103 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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0
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104 {
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56
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105 u_char c, ch, *p, *m;
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0
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106 enum {
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107 sw_start = 0,
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108 sw_method,
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109 sw_spaces_before_uri,
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110 sw_schema,
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111 sw_schema_slash,
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112 sw_schema_slash_slash,
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113 sw_host,
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114 sw_port,
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115 sw_after_slash_in_uri,
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116 sw_check_uri,
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117 sw_uri,
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118 sw_http_09,
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119 sw_http_H,
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120 sw_http_HT,
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121 sw_http_HTT,
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122 sw_http_HTTP,
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123 sw_first_major_digit,
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124 sw_major_digit,
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125 sw_first_minor_digit,
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126 sw_minor_digit,
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28
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127 sw_almost_done
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0
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128 } state;
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129
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130 state = r->state;
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131
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28
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132 for (p = b->pos; p < b->last; p++) {
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133 ch = *p;
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0
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134
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135 switch (state) {
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136
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137 /* HTTP methods: GET, HEAD, POST */
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138 case sw_start:
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28
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139 r->request_start = p;
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0
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140
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141 if (ch == CR || ch == LF) {
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142 break;
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143 }
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144
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145 if (ch < 'A' || ch > 'Z') {
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146 return NGX_HTTP_PARSE_INVALID_METHOD;
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147 }
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148
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149 state = sw_method;
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150 break;
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151
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152 case sw_method:
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153 if (ch == ' ') {
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58
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154 r->method_end = p - 1;
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0
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155 m = r->request_start;
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156
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188
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157 switch (p - m) {
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0
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158
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188
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159 case 3:
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300
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160 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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161 r->method = NGX_HTTP_GET;
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256
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162 break;
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163 }
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182
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164
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300
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165 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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166 r->method = NGX_HTTP_PUT;
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256
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167 break;
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0
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168 }
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256
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169
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188
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170 break;
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0
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171
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188
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172 case 4:
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256
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173 if (m[1] == 'O') {
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174
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300
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175 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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176 r->method = NGX_HTTP_POST;
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177 break;
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178 }
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179
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300
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180 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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181 r->method = NGX_HTTP_COPY;
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182 break;
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183 }
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0
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184
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300
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185 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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186 r->method = NGX_HTTP_MOVE;
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187 break;
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188 }
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189
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300
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190 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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191 r->method = NGX_HTTP_LOCK;
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192 break;
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193 }
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194
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195 } else {
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196
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300
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197 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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198 r->method = NGX_HTTP_HEAD;
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199 break;
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200 }
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0
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201 }
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256
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202
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188
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203 break;
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182
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204
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188
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205 case 5:
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300
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206 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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207 r->method = NGX_HTTP_MKCOL;
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208 }
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256
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209
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300
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210 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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211 r->method = NGX_HTTP_TRACE;
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212 }
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213
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188
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214 break;
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186
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215
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188
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216 case 6:
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300
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217 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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218 r->method = NGX_HTTP_DELETE;
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256
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219 break;
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182
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220 }
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256
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221
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300
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222 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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223 r->method = NGX_HTTP_UNLOCK;
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224 break;
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225 }
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226
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227 break;
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228
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229 case 7:
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300
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230 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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231 {
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232 r->method = NGX_HTTP_OPTIONS;
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233 }
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234
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235 break;
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236
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237 case 8:
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300
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238 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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239 {
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240 r->method = NGX_HTTP_PROPFIND;
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241 }
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242
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243 break;
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244
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245 case 9:
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300
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246 if (ngx_str9cmp(m,
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247 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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248 {
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249 r->method = NGX_HTTP_PROPPATCH;
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250 }
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251
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188
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252 break;
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0
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253 }
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254
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255 state = sw_spaces_before_uri;
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256 break;
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257 }
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258
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259 if (ch < 'A' || ch > 'Z') {
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260 return NGX_HTTP_PARSE_INVALID_METHOD;
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261 }
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262
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263 break;
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264
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265 /* space* before URI */
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266 case sw_spaces_before_uri:
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56
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267
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254
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268 if (ch == '/' ){
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269 r->uri_start = p;
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270 state = sw_after_slash_in_uri;
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271 break;
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272 }
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273
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56
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274 c = (u_char) (ch | 0x20);
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70
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275 if (c >= 'a' && c <= 'z') {
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38
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276 r->schema_start = p;
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277 state = sw_schema;
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278 break;
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279 }
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280
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0
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281 switch (ch) {
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282 case ' ':
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283 break;
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284 default:
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285 return NGX_HTTP_PARSE_INVALID_REQUEST;
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286 }
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287 break;
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288
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289 case sw_schema:
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56
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290
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291 c = (u_char) (ch | 0x20);
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70
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292 if (c >= 'a' && c <= 'z') {
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38
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293 break;
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294 }
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295
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0
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296 switch (ch) {
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297 case ':':
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28
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298 r->schema_end = p;
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0
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299 state = sw_schema_slash;
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300 break;
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301 default:
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302 return NGX_HTTP_PARSE_INVALID_REQUEST;
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303 }
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304 break;
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305
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306 case sw_schema_slash:
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307 switch (ch) {
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308 case '/':
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309 state = sw_schema_slash_slash;
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310 break;
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311 default:
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312 return NGX_HTTP_PARSE_INVALID_REQUEST;
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313 }
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314 break;
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315
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316 case sw_schema_slash_slash:
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317 switch (ch) {
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318 case '/':
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258
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319 r->host_start = p + 1;
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0
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320 state = sw_host;
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321 break;
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322 default:
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323 return NGX_HTTP_PARSE_INVALID_REQUEST;
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324 }
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325 break;
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326
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327 case sw_host:
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56
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328
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329 c = (u_char) (ch | 0x20);
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70
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330 if (c >= 'a' && c <= 'z') {
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56
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331 break;
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332 }
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333
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254
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334 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
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38
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335 break;
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336 }
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337
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342
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338 r->host_end = p;
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339
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0
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340 switch (ch) {
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341 case ':':
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342 state = sw_port;
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343 break;
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344 case '/':
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28
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345 r->uri_start = p;
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0
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346 state = sw_after_slash_in_uri;
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347 break;
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342
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348 case ' ':
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349 /*
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350 * use single "/" from request line to preserve pointers,
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351 * if request line will be copied to large client buffer
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352 */
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353 r->uri_start = r->schema_end + 1;
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354 r->uri_end = r->schema_end + 2;
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355 state = sw_http_09;
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356 break;
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0
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357 default:
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358 return NGX_HTTP_PARSE_INVALID_REQUEST;
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359 }
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360 break;
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361
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362 case sw_port:
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38
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363 if (ch >= '0' && ch <= '9') {
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364 break;
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365 }
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366
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0
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367 switch (ch) {
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368 case '/':
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28
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369 r->port_end = p;
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370 r->uri_start = p;
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0
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371 state = sw_after_slash_in_uri;
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372 break;
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342
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373 case ' ':
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374 r->port_end = p;
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375 /*
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376 * use single "/" from request line to preserve pointers,
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377 * if request line will be copied to large client buffer
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378 */
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379 r->uri_start = r->schema_end + 1;
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380 r->uri_end = r->schema_end + 2;
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381 state = sw_http_09;
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382 break;
|
|
0
|
383 default:
|
|
38
|
384 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
385 }
|
|
|
386 break;
|
|
|
387
|
|
10
|
388 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
389 case sw_after_slash_in_uri:
|
|
38
|
390
|
|
254
|
391 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
392 state = sw_check_uri;
|
|
|
393 break;
|
|
|
394 }
|
|
|
395
|
|
0
|
396 switch (ch) {
|
|
38
|
397 case ' ':
|
|
|
398 r->uri_end = p;
|
|
|
399 state = sw_http_09;
|
|
|
400 break;
|
|
0
|
401 case CR:
|
|
28
|
402 r->uri_end = p;
|
|
0
|
403 r->http_minor = 9;
|
|
|
404 state = sw_almost_done;
|
|
|
405 break;
|
|
|
406 case LF:
|
|
28
|
407 r->uri_end = p;
|
|
0
|
408 r->http_minor = 9;
|
|
28
|
409 goto done;
|
|
0
|
410 case '.':
|
|
2
|
411 r->complex_uri = 1;
|
|
|
412 state = sw_uri;
|
|
|
413 break;
|
|
0
|
414 case '%':
|
|
2
|
415 r->quoted_uri = 1;
|
|
0
|
416 state = sw_uri;
|
|
|
417 break;
|
|
38
|
418 case '/':
|
|
|
419 r->complex_uri = 1;
|
|
|
420 state = sw_uri;
|
|
|
421 break;
|
|
10
|
422 #if (NGX_WIN32)
|
|
|
423 case '\\':
|
|
|
424 r->complex_uri = 1;
|
|
38
|
425 state = sw_uri;
|
|
10
|
426 break;
|
|
|
427 #endif
|
|
38
|
428 case '?':
|
|
|
429 r->args_start = p + 1;
|
|
|
430 state = sw_uri;
|
|
0
|
431 break;
|
|
254
|
432 case '#':
|
|
|
433 r->complex_uri = 1;
|
|
|
434 state = sw_uri;
|
|
|
435 break;
|
|
34
|
436 case '+':
|
|
|
437 r->plus_in_uri = 1;
|
|
|
438 break;
|
|
38
|
439 case '\0':
|
|
|
440 r->zero_in_uri = 1;
|
|
0
|
441 break;
|
|
|
442 default:
|
|
|
443 state = sw_check_uri;
|
|
|
444 break;
|
|
|
445 }
|
|
|
446 break;
|
|
|
447
|
|
10
|
448 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
449 case sw_check_uri:
|
|
38
|
450
|
|
254
|
451 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
452 break;
|
|
|
453 }
|
|
|
454
|
|
0
|
455 switch (ch) {
|
|
38
|
456 case '/':
|
|
|
457 r->uri_ext = NULL;
|
|
|
458 state = sw_after_slash_in_uri;
|
|
|
459 break;
|
|
|
460 case '.':
|
|
|
461 r->uri_ext = p + 1;
|
|
|
462 break;
|
|
|
463 case ' ':
|
|
|
464 r->uri_end = p;
|
|
|
465 state = sw_http_09;
|
|
|
466 break;
|
|
0
|
467 case CR:
|
|
28
|
468 r->uri_end = p;
|
|
0
|
469 r->http_minor = 9;
|
|
|
470 state = sw_almost_done;
|
|
|
471 break;
|
|
|
472 case LF:
|
|
28
|
473 r->uri_end = p;
|
|
0
|
474 r->http_minor = 9;
|
|
28
|
475 goto done;
|
|
10
|
476 #if (NGX_WIN32)
|
|
|
477 case '\\':
|
|
|
478 r->complex_uri = 1;
|
|
|
479 state = sw_after_slash_in_uri;
|
|
|
480 break;
|
|
|
481 #endif
|
|
38
|
482 case '%':
|
|
|
483 r->quoted_uri = 1;
|
|
|
484 state = sw_uri;
|
|
0
|
485 break;
|
|
|
486 case '?':
|
|
28
|
487 r->args_start = p + 1;
|
|
0
|
488 state = sw_uri;
|
|
|
489 break;
|
|
254
|
490 case '#':
|
|
|
491 r->complex_uri = 1;
|
|
|
492 state = sw_uri;
|
|
|
493 break;
|
|
206
|
494 case '+':
|
|
|
495 r->plus_in_uri = 1;
|
|
|
496 break;
|
|
38
|
497 case '\0':
|
|
|
498 r->zero_in_uri = 1;
|
|
|
499 break;
|
|
0
|
500 }
|
|
|
501 break;
|
|
|
502
|
|
|
503 /* URI */
|
|
|
504 case sw_uri:
|
|
254
|
505
|
|
|
506 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
507 break;
|
|
|
508 }
|
|
|
509
|
|
0
|
510 switch (ch) {
|
|
38
|
511 case ' ':
|
|
|
512 r->uri_end = p;
|
|
|
513 state = sw_http_09;
|
|
|
514 break;
|
|
0
|
515 case CR:
|
|
28
|
516 r->uri_end = p;
|
|
0
|
517 r->http_minor = 9;
|
|
|
518 state = sw_almost_done;
|
|
|
519 break;
|
|
|
520 case LF:
|
|
28
|
521 r->uri_end = p;
|
|
0
|
522 r->http_minor = 9;
|
|
28
|
523 goto done;
|
|
254
|
524 case '#':
|
|
|
525 r->complex_uri = 1;
|
|
|
526 break;
|
|
38
|
527 case '\0':
|
|
|
528 r->zero_in_uri = 1;
|
|
0
|
529 break;
|
|
|
530 }
|
|
|
531 break;
|
|
|
532
|
|
|
533 /* space+ after URI */
|
|
|
534 case sw_http_09:
|
|
|
535 switch (ch) {
|
|
|
536 case ' ':
|
|
|
537 break;
|
|
|
538 case CR:
|
|
|
539 r->http_minor = 9;
|
|
|
540 state = sw_almost_done;
|
|
|
541 break;
|
|
|
542 case LF:
|
|
|
543 r->http_minor = 9;
|
|
28
|
544 goto done;
|
|
0
|
545 case 'H':
|
|
28
|
546 r->http_protocol.data = p;
|
|
0
|
547 state = sw_http_H;
|
|
|
548 break;
|
|
|
549 default:
|
|
|
550 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
551 }
|
|
|
552 break;
|
|
|
553
|
|
|
554 case sw_http_H:
|
|
|
555 switch (ch) {
|
|
|
556 case 'T':
|
|
|
557 state = sw_http_HT;
|
|
|
558 break;
|
|
|
559 default:
|
|
|
560 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
561 }
|
|
|
562 break;
|
|
|
563
|
|
|
564 case sw_http_HT:
|
|
|
565 switch (ch) {
|
|
|
566 case 'T':
|
|
|
567 state = sw_http_HTT;
|
|
|
568 break;
|
|
|
569 default:
|
|
|
570 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
571 }
|
|
|
572 break;
|
|
|
573
|
|
|
574 case sw_http_HTT:
|
|
|
575 switch (ch) {
|
|
|
576 case 'P':
|
|
|
577 state = sw_http_HTTP;
|
|
|
578 break;
|
|
|
579 default:
|
|
|
580 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
581 }
|
|
|
582 break;
|
|
|
583
|
|
|
584 case sw_http_HTTP:
|
|
|
585 switch (ch) {
|
|
|
586 case '/':
|
|
|
587 state = sw_first_major_digit;
|
|
|
588 break;
|
|
|
589 default:
|
|
|
590 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
591 }
|
|
|
592 break;
|
|
|
593
|
|
|
594 /* first digit of major HTTP version */
|
|
|
595 case sw_first_major_digit:
|
|
|
596 if (ch < '1' || ch > '9') {
|
|
|
597 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
598 }
|
|
|
599
|
|
|
600 r->http_major = ch - '0';
|
|
|
601 state = sw_major_digit;
|
|
|
602 break;
|
|
|
603
|
|
|
604 /* major HTTP version or dot */
|
|
|
605 case sw_major_digit:
|
|
|
606 if (ch == '.') {
|
|
|
607 state = sw_first_minor_digit;
|
|
|
608 break;
|
|
|
609 }
|
|
|
610
|
|
|
611 if (ch < '0' || ch > '9') {
|
|
|
612 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
613 }
|
|
|
614
|
|
|
615 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
616 break;
|
|
|
617
|
|
|
618 /* first digit of minor HTTP version */
|
|
|
619 case sw_first_minor_digit:
|
|
|
620 if (ch < '0' || ch > '9') {
|
|
|
621 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
622 }
|
|
|
623
|
|
|
624 r->http_minor = ch - '0';
|
|
|
625 state = sw_minor_digit;
|
|
|
626 break;
|
|
|
627
|
|
|
628 /* minor HTTP version or end of request line */
|
|
|
629 case sw_minor_digit:
|
|
|
630 if (ch == CR) {
|
|
|
631 state = sw_almost_done;
|
|
|
632 break;
|
|
|
633 }
|
|
|
634
|
|
|
635 if (ch == LF) {
|
|
28
|
636 goto done;
|
|
0
|
637 }
|
|
|
638
|
|
|
639 if (ch < '0' || ch > '9') {
|
|
|
640 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
641 }
|
|
|
642
|
|
|
643 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
644 break;
|
|
|
645
|
|
|
646 /* end of request line */
|
|
|
647 case sw_almost_done:
|
|
28
|
648 r->request_end = p - 1;
|
|
0
|
649 switch (ch) {
|
|
|
650 case LF:
|
|
28
|
651 goto done;
|
|
0
|
652 default:
|
|
|
653 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
654 }
|
|
|
655 }
|
|
|
656 }
|
|
|
657
|
|
|
658 b->pos = p;
|
|
28
|
659 r->state = state;
|
|
0
|
660
|
|
28
|
661 return NGX_AGAIN;
|
|
0
|
662
|
|
28
|
663 done:
|
|
|
664
|
|
|
665 b->pos = p + 1;
|
|
0
|
666
|
|
28
|
667 if (r->request_end == NULL) {
|
|
|
668 r->request_end = p;
|
|
|
669 }
|
|
0
|
670
|
|
28
|
671 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
672 r->state = sw_start;
|
|
0
|
673
|
|
28
|
674 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
675 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
676 }
|
|
28
|
677
|
|
|
678 return NGX_OK;
|
|
0
|
679 }
|
|
|
680
|
|
|
681
|
|
58
|
682 ngx_int_t
|
|
|
683 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
0
|
684 {
|
|
56
|
685 u_char c, ch, *p;
|
|
198
|
686 ngx_uint_t hash, i;
|
|
0
|
687 enum {
|
|
|
688 sw_start = 0,
|
|
|
689 sw_name,
|
|
|
690 sw_space_before_value,
|
|
|
691 sw_value,
|
|
|
692 sw_space_after_value,
|
|
52
|
693 sw_ignore_line,
|
|
0
|
694 sw_almost_done,
|
|
52
|
695 sw_header_almost_done
|
|
0
|
696 } state;
|
|
|
697
|
|
250
|
698 /* the last '\0' is not needed because string is zero terminated */
|
|
|
699
|
|
198
|
700 static u_char lowcase[] =
|
|
|
701 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
702 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
|
703 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
704 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
705 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
706 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
707 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
708 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
|
|
|
709
|
|
0
|
710 state = r->state;
|
|
56
|
711 hash = r->header_hash;
|
|
198
|
712 i = r->lowcase_index;
|
|
0
|
713
|
|
28
|
714 for (p = b->pos; p < b->last; p++) {
|
|
|
715 ch = *p;
|
|
0
|
716
|
|
|
717 switch (state) {
|
|
|
718
|
|
|
719 /* first char */
|
|
|
720 case sw_start:
|
|
60
|
721 r->invalid_header = 0;
|
|
|
722
|
|
0
|
723 switch (ch) {
|
|
|
724 case CR:
|
|
28
|
725 r->header_end = p;
|
|
0
|
726 state = sw_header_almost_done;
|
|
|
727 break;
|
|
|
728 case LF:
|
|
28
|
729 r->header_end = p;
|
|
|
730 goto header_done;
|
|
0
|
731 default:
|
|
|
732 state = sw_name;
|
|
28
|
733 r->header_name_start = p;
|
|
0
|
734
|
|
198
|
735 c = lowcase[ch];
|
|
0
|
736
|
|
198
|
737 if (c) {
|
|
|
738 hash = ngx_hash(0, c);
|
|
|
739 r->lowcase_header[0] = c;
|
|
|
740 i = 1;
|
|
0
|
741 break;
|
|
|
742 }
|
|
|
743
|
|
60
|
744 r->invalid_header = 1;
|
|
|
745
|
|
52
|
746 break;
|
|
0
|
747
|
|
|
748 }
|
|
|
749 break;
|
|
|
750
|
|
|
751 /* header name */
|
|
|
752 case sw_name:
|
|
198
|
753 c = lowcase[ch];
|
|
|
754
|
|
|
755 if (c) {
|
|
|
756 hash = ngx_hash(hash, c);
|
|
|
757 r->lowcase_header[i++] = c;
|
|
|
758 i &= ~NGX_HTTP_LC_HEADER_LEN;
|
|
0
|
759 break;
|
|
|
760 }
|
|
|
761
|
|
|
762 if (ch == ':') {
|
|
28
|
763 r->header_name_end = p;
|
|
0
|
764 state = sw_space_before_value;
|
|
|
765 break;
|
|
|
766 }
|
|
|
767
|
|
58
|
768 if (ch == CR) {
|
|
|
769 r->header_name_end = p;
|
|
|
770 r->header_start = p;
|
|
|
771 r->header_end = p;
|
|
|
772 state = sw_almost_done;
|
|
|
773 break;
|
|
|
774 }
|
|
|
775
|
|
|
776 if (ch == LF) {
|
|
|
777 r->header_name_end = p;
|
|
|
778 r->header_start = p;
|
|
|
779 r->header_end = p;
|
|
|
780 goto done;
|
|
|
781 }
|
|
|
782
|
|
2
|
783 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
784 if (ch == '/'
|
|
58
|
785 && r->upstream
|
|
|
786 && p - r->header_name_start == 4
|
|
|
787 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
788 {
|
|
|
789 state = sw_ignore_line;
|
|
|
790 break;
|
|
|
791 }
|
|
|
792
|
|
60
|
793 r->invalid_header = 1;
|
|
|
794
|
|
52
|
795 break;
|
|
0
|
796
|
|
|
797 /* space* before header value */
|
|
|
798 case sw_space_before_value:
|
|
|
799 switch (ch) {
|
|
|
800 case ' ':
|
|
|
801 break;
|
|
|
802 case CR:
|
|
58
|
803 r->header_start = p;
|
|
|
804 r->header_end = p;
|
|
0
|
805 state = sw_almost_done;
|
|
|
806 break;
|
|
|
807 case LF:
|
|
58
|
808 r->header_start = p;
|
|
|
809 r->header_end = p;
|
|
28
|
810 goto done;
|
|
0
|
811 default:
|
|
28
|
812 r->header_start = p;
|
|
0
|
813 state = sw_value;
|
|
|
814 break;
|
|
|
815 }
|
|
|
816 break;
|
|
|
817
|
|
|
818 /* header value */
|
|
|
819 case sw_value:
|
|
|
820 switch (ch) {
|
|
|
821 case ' ':
|
|
28
|
822 r->header_end = p;
|
|
0
|
823 state = sw_space_after_value;
|
|
|
824 break;
|
|
|
825 case CR:
|
|
28
|
826 r->header_end = p;
|
|
0
|
827 state = sw_almost_done;
|
|
|
828 break;
|
|
|
829 case LF:
|
|
28
|
830 r->header_end = p;
|
|
|
831 goto done;
|
|
0
|
832 }
|
|
|
833 break;
|
|
|
834
|
|
|
835 /* space* before end of header line */
|
|
|
836 case sw_space_after_value:
|
|
|
837 switch (ch) {
|
|
|
838 case ' ':
|
|
|
839 break;
|
|
|
840 case CR:
|
|
|
841 state = sw_almost_done;
|
|
|
842 break;
|
|
|
843 case LF:
|
|
28
|
844 goto done;
|
|
0
|
845 default:
|
|
|
846 state = sw_value;
|
|
|
847 break;
|
|
|
848 }
|
|
|
849 break;
|
|
|
850
|
|
|
851 /* ignore header line */
|
|
|
852 case sw_ignore_line:
|
|
|
853 switch (ch) {
|
|
|
854 case LF:
|
|
|
855 state = sw_start;
|
|
|
856 break;
|
|
|
857 default:
|
|
|
858 break;
|
|
|
859 }
|
|
|
860 break;
|
|
|
861
|
|
|
862 /* end of header line */
|
|
|
863 case sw_almost_done:
|
|
|
864 switch (ch) {
|
|
172
|
865 case CR:
|
|
|
866 break;
|
|
0
|
867 case LF:
|
|
28
|
868 goto done;
|
|
0
|
869 default:
|
|
|
870 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
871 }
|
|
174
|
872 break;
|
|
0
|
873
|
|
|
874 /* end of header */
|
|
|
875 case sw_header_almost_done:
|
|
|
876 switch (ch) {
|
|
|
877 case LF:
|
|
28
|
878 goto header_done;
|
|
0
|
879 default:
|
|
|
880 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
881 }
|
|
|
882 }
|
|
|
883 }
|
|
|
884
|
|
|
885 b->pos = p;
|
|
28
|
886 r->state = state;
|
|
56
|
887 r->header_hash = hash;
|
|
198
|
888 r->lowcase_index = i;
|
|
0
|
889
|
|
28
|
890 return NGX_AGAIN;
|
|
|
891
|
|
|
892 done:
|
|
|
893
|
|
|
894 b->pos = p + 1;
|
|
|
895 r->state = sw_start;
|
|
56
|
896 r->header_hash = hash;
|
|
198
|
897 r->lowcase_index = i;
|
|
0
|
898
|
|
28
|
899 return NGX_OK;
|
|
|
900
|
|
|
901 header_done:
|
|
0
|
902
|
|
28
|
903 b->pos = p + 1;
|
|
|
904 r->state = sw_start;
|
|
|
905
|
|
|
906 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
907 }
|
|
|
908
|
|
|
909
|
|
58
|
910 ngx_int_t
|
|
342
|
911 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
912 {
|
|
|
913 u_char c, ch, decoded, *p, *u;
|
|
|
914 enum {
|
|
|
915 sw_usual = 0,
|
|
|
916 sw_slash,
|
|
|
917 sw_dot,
|
|
|
918 sw_dot_dot,
|
|
10
|
919 #if (NGX_WIN32)
|
|
0
|
920 sw_dot_dot_dot,
|
|
|
921 #endif
|
|
|
922 sw_quoted,
|
|
|
923 sw_quoted_second
|
|
|
924 } state, quoted_state;
|
|
|
925
|
|
28
|
926 #if (NGX_SUPPRESS_WARN)
|
|
0
|
927 decoded = '\0';
|
|
|
928 quoted_state = sw_usual;
|
|
28
|
929 #endif
|
|
0
|
930
|
|
|
931 state = sw_usual;
|
|
|
932 p = r->uri_start;
|
|
|
933 u = r->uri.data;
|
|
|
934 r->uri_ext = NULL;
|
|
10
|
935 r->args_start = NULL;
|
|
0
|
936
|
|
|
937 ch = *p++;
|
|
|
938
|
|
28
|
939 while (p <= r->uri_end) {
|
|
10
|
940
|
|
|
941 /*
|
|
28
|
942 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
943 * because after the URI there is always at least one charcter:
|
|
|
944 * the line feed
|
|
|
945 */
|
|
0
|
946
|
|
|
947 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
948 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
949
|
|
|
950 switch (state) {
|
|
122
|
951
|
|
0
|
952 case sw_usual:
|
|
254
|
953
|
|
|
954 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
955 *u++ = ch;
|
|
|
956 ch = *p++;
|
|
|
957 break;
|
|
|
958 }
|
|
|
959
|
|
0
|
960 switch(ch) {
|
|
10
|
961 #if (NGX_WIN32)
|
|
|
962 case '\\':
|
|
|
963 r->uri_ext = NULL;
|
|
|
964
|
|
|
965 if (p == r->uri_start + r->uri.len) {
|
|
|
966
|
|
|
967 /*
|
|
|
968 * we omit the last "\" to cause redirect because
|
|
|
969 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
970 */
|
|
|
971
|
|
|
972 break;
|
|
|
973 }
|
|
|
974
|
|
|
975 state = sw_slash;
|
|
|
976 *u++ = '/';
|
|
|
977 break;
|
|
|
978 #endif
|
|
0
|
979 case '/':
|
|
|
980 r->uri_ext = NULL;
|
|
|
981 state = sw_slash;
|
|
|
982 *u++ = ch;
|
|
|
983 break;
|
|
|
984 case '%':
|
|
|
985 quoted_state = state;
|
|
|
986 state = sw_quoted;
|
|
|
987 break;
|
|
10
|
988 case '?':
|
|
|
989 r->args_start = p;
|
|
254
|
990 goto args;
|
|
|
991 case '#':
|
|
28
|
992 goto done;
|
|
0
|
993 case '.':
|
|
|
994 r->uri_ext = u + 1;
|
|
22
|
995 *u++ = ch;
|
|
|
996 break;
|
|
206
|
997 case '+':
|
|
|
998 r->plus_in_uri = 1;
|
|
0
|
999 default:
|
|
|
1000 *u++ = ch;
|
|
|
1001 break;
|
|
|
1002 }
|
|
254
|
1003
|
|
0
|
1004 ch = *p++;
|
|
|
1005 break;
|
|
|
1006
|
|
|
1007 case sw_slash:
|
|
254
|
1008
|
|
|
1009 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1010 state = sw_usual;
|
|
|
1011 *u++ = ch;
|
|
|
1012 ch = *p++;
|
|
|
1013 break;
|
|
|
1014 }
|
|
|
1015
|
|
0
|
1016 switch(ch) {
|
|
10
|
1017 #if (NGX_WIN32)
|
|
|
1018 case '\\':
|
|
342
|
1019 break;
|
|
10
|
1020 #endif
|
|
0
|
1021 case '/':
|
|
342
|
1022 if (merge_slashes) {
|
|
|
1023 *u++ = ch;
|
|
|
1024 }
|
|
0
|
1025 break;
|
|
|
1026 case '.':
|
|
|
1027 state = sw_dot;
|
|
|
1028 *u++ = ch;
|
|
|
1029 break;
|
|
|
1030 case '%':
|
|
|
1031 quoted_state = state;
|
|
|
1032 state = sw_quoted;
|
|
|
1033 break;
|
|
28
|
1034 case '?':
|
|
|
1035 r->args_start = p;
|
|
254
|
1036 goto args;
|
|
|
1037 case '#':
|
|
28
|
1038 goto done;
|
|
206
|
1039 case '+':
|
|
|
1040 r->plus_in_uri = 1;
|
|
0
|
1041 default:
|
|
|
1042 state = sw_usual;
|
|
|
1043 *u++ = ch;
|
|
|
1044 break;
|
|
|
1045 }
|
|
254
|
1046
|
|
0
|
1047 ch = *p++;
|
|
|
1048 break;
|
|
|
1049
|
|
|
1050 case sw_dot:
|
|
254
|
1051
|
|
|
1052 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1053 state = sw_usual;
|
|
|
1054 *u++ = ch;
|
|
|
1055 ch = *p++;
|
|
|
1056 break;
|
|
|
1057 }
|
|
|
1058
|
|
0
|
1059 switch(ch) {
|
|
10
|
1060 #if (NGX_WIN32)
|
|
|
1061 case '\\':
|
|
|
1062 #endif
|
|
0
|
1063 case '/':
|
|
|
1064 state = sw_slash;
|
|
|
1065 u--;
|
|
|
1066 break;
|
|
|
1067 case '.':
|
|
|
1068 state = sw_dot_dot;
|
|
|
1069 *u++ = ch;
|
|
|
1070 break;
|
|
|
1071 case '%':
|
|
|
1072 quoted_state = state;
|
|
|
1073 state = sw_quoted;
|
|
|
1074 break;
|
|
28
|
1075 case '?':
|
|
|
1076 r->args_start = p;
|
|
254
|
1077 goto args;
|
|
|
1078 case '#':
|
|
28
|
1079 goto done;
|
|
206
|
1080 case '+':
|
|
|
1081 r->plus_in_uri = 1;
|
|
0
|
1082 default:
|
|
|
1083 state = sw_usual;
|
|
|
1084 *u++ = ch;
|
|
|
1085 break;
|
|
|
1086 }
|
|
254
|
1087
|
|
0
|
1088 ch = *p++;
|
|
|
1089 break;
|
|
|
1090
|
|
|
1091 case sw_dot_dot:
|
|
254
|
1092
|
|
|
1093 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1094 state = sw_usual;
|
|
|
1095 *u++ = ch;
|
|
|
1096 ch = *p++;
|
|
|
1097 break;
|
|
|
1098 }
|
|
|
1099
|
|
0
|
1100 switch(ch) {
|
|
10
|
1101 #if (NGX_WIN32)
|
|
|
1102 case '\\':
|
|
|
1103 #endif
|
|
0
|
1104 case '/':
|
|
|
1105 state = sw_slash;
|
|
|
1106 u -= 4;
|
|
|
1107 if (u < r->uri.data) {
|
|
|
1108 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1109 }
|
|
|
1110 while (*(u - 1) != '/') {
|
|
|
1111 u--;
|
|
|
1112 }
|
|
|
1113 break;
|
|
|
1114 case '%':
|
|
|
1115 quoted_state = state;
|
|
|
1116 state = sw_quoted;
|
|
|
1117 break;
|
|
28
|
1118 case '?':
|
|
|
1119 r->args_start = p;
|
|
254
|
1120 goto args;
|
|
|
1121 case '#':
|
|
28
|
1122 goto done;
|
|
10
|
1123 #if (NGX_WIN32)
|
|
0
|
1124 case '.':
|
|
|
1125 state = sw_dot_dot_dot;
|
|
|
1126 *u++ = ch;
|
|
|
1127 break;
|
|
|
1128 #endif
|
|
206
|
1129 case '+':
|
|
|
1130 r->plus_in_uri = 1;
|
|
0
|
1131 default:
|
|
|
1132 state = sw_usual;
|
|
|
1133 *u++ = ch;
|
|
|
1134 break;
|
|
|
1135 }
|
|
254
|
1136
|
|
0
|
1137 ch = *p++;
|
|
|
1138 break;
|
|
|
1139
|
|
10
|
1140 #if (NGX_WIN32)
|
|
0
|
1141 case sw_dot_dot_dot:
|
|
254
|
1142
|
|
|
1143 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1144 state = sw_usual;
|
|
|
1145 *u++ = ch;
|
|
|
1146 ch = *p++;
|
|
|
1147 break;
|
|
|
1148 }
|
|
|
1149
|
|
0
|
1150 switch(ch) {
|
|
10
|
1151 case '\\':
|
|
0
|
1152 case '/':
|
|
|
1153 state = sw_slash;
|
|
|
1154 u -= 5;
|
|
|
1155 if (u < r->uri.data) {
|
|
|
1156 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1157 }
|
|
|
1158 while (*u != '/') {
|
|
|
1159 u--;
|
|
|
1160 }
|
|
|
1161 if (u < r->uri.data) {
|
|
|
1162 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1163 }
|
|
|
1164 while (*(u - 1) != '/') {
|
|
|
1165 u--;
|
|
|
1166 }
|
|
|
1167 break;
|
|
|
1168 case '%':
|
|
|
1169 quoted_state = state;
|
|
|
1170 state = sw_quoted;
|
|
|
1171 break;
|
|
122
|
1172 case '?':
|
|
|
1173 r->args_start = p;
|
|
254
|
1174 goto args;
|
|
|
1175 case '#':
|
|
122
|
1176 goto done;
|
|
206
|
1177 case '+':
|
|
|
1178 r->plus_in_uri = 1;
|
|
0
|
1179 default:
|
|
|
1180 state = sw_usual;
|
|
|
1181 *u++ = ch;
|
|
|
1182 break;
|
|
|
1183 }
|
|
254
|
1184
|
|
0
|
1185 ch = *p++;
|
|
|
1186 break;
|
|
|
1187 #endif
|
|
|
1188
|
|
|
1189 case sw_quoted:
|
|
216
|
1190 r->quoted_uri = 1;
|
|
|
1191
|
|
0
|
1192 if (ch >= '0' && ch <= '9') {
|
|
|
1193 decoded = (u_char) (ch - '0');
|
|
|
1194 state = sw_quoted_second;
|
|
|
1195 ch = *p++;
|
|
|
1196 break;
|
|
|
1197 }
|
|
|
1198
|
|
|
1199 c = (u_char) (ch | 0x20);
|
|
|
1200 if (c >= 'a' && c <= 'f') {
|
|
|
1201 decoded = (u_char) (c - 'a' + 10);
|
|
|
1202 state = sw_quoted_second;
|
|
|
1203 ch = *p++;
|
|
|
1204 break;
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1208
|
|
|
1209 case sw_quoted_second:
|
|
|
1210 if (ch >= '0' && ch <= '9') {
|
|
|
1211 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1212
|
|
0
|
1213 if (ch == '%') {
|
|
|
1214 state = sw_usual;
|
|
|
1215 *u++ = ch;
|
|
|
1216 ch = *p++;
|
|
|
1217 break;
|
|
|
1218 }
|
|
38
|
1219
|
|
254
|
1220 if (ch == '#') {
|
|
|
1221 *u++ = ch;
|
|
|
1222 ch = *p++;
|
|
|
1223
|
|
|
1224 } else if (ch == '\0') {
|
|
38
|
1225 r->zero_in_uri = 1;
|
|
|
1226 }
|
|
|
1227
|
|
0
|
1228 state = quoted_state;
|
|
|
1229 break;
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 c = (u_char) (ch | 0x20);
|
|
|
1233 if (c >= 'a' && c <= 'f') {
|
|
|
1234 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1235
|
|
28
|
1236 if (ch == '?') {
|
|
0
|
1237 *u++ = ch;
|
|
|
1238 ch = *p++;
|
|
206
|
1239
|
|
|
1240 } else if (ch == '+') {
|
|
|
1241 r->plus_in_uri = 1;
|
|
0
|
1242 }
|
|
206
|
1243
|
|
0
|
1244 state = quoted_state;
|
|
|
1245 break;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1249 }
|
|
|
1250 }
|
|
|
1251
|
|
28
|
1252 done:
|
|
|
1253
|
|
0
|
1254 r->uri.len = u - r->uri.data;
|
|
254
|
1255
|
|
|
1256 if (r->uri_ext) {
|
|
|
1257 r->exten.len = u - r->uri_ext;
|
|
|
1258 r->exten.data = r->uri_ext;
|
|
|
1259 }
|
|
|
1260
|
|
|
1261 r->uri_ext = NULL;
|
|
|
1262
|
|
|
1263 return NGX_OK;
|
|
|
1264
|
|
|
1265 args:
|
|
|
1266
|
|
|
1267 while (p < r->uri_end) {
|
|
|
1268 if (*p++ != '#') {
|
|
|
1269 continue;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 r->args.len = p - 1 - r->args_start;
|
|
|
1273 r->args.data = r->args_start;
|
|
|
1274 r->args_start = NULL;
|
|
|
1275
|
|
|
1276 break;
|
|
|
1277 }
|
|
|
1278
|
|
|
1279 r->uri.len = u - r->uri.data;
|
|
0
|
1280
|
|
|
1281 if (r->uri_ext) {
|
|
|
1282 r->exten.len = u - r->uri_ext;
|
|
10
|
1283 r->exten.data = r->uri_ext;
|
|
0
|
1284 }
|
|
|
1285
|
|
|
1286 r->uri_ext = NULL;
|
|
|
1287
|
|
|
1288 return NGX_OK;
|
|
|
1289 }
|
|
58
|
1290
|
|
|
1291
|
|
|
1292 ngx_int_t
|
|
122
|
1293 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1294 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1295 {
|
|
|
1296 u_char ch, *p;
|
|
|
1297 size_t len;
|
|
|
1298
|
|
|
1299 len = uri->len;
|
|
|
1300 p = uri->data;
|
|
|
1301
|
|
|
1302 if (len == 0 || p[0] == '?') {
|
|
|
1303 goto unsafe;
|
|
|
1304 }
|
|
|
1305
|
|
|
1306 if (p[0] == '.' && len == 3 && p[1] == '.' && (p[2] == '/'
|
|
|
1307 #if (NGX_WIN32)
|
|
|
1308 || p[2] == '\\'
|
|
|
1309 #endif
|
|
|
1310 ))
|
|
|
1311 {
|
|
|
1312 goto unsafe;
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 for ( /* void */ ; len; len--) {
|
|
|
1316
|
|
|
1317 ch = *p++;
|
|
|
1318
|
|
254
|
1319 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1320 continue;
|
|
|
1321 }
|
|
|
1322
|
|
122
|
1323 if (ch == '?') {
|
|
|
1324 args->len = len - 1;
|
|
|
1325 args->data = p;
|
|
|
1326 uri->len -= len;
|
|
|
1327
|
|
|
1328 return NGX_OK;
|
|
|
1329 }
|
|
|
1330
|
|
|
1331 if (ch == '\0') {
|
|
|
1332 *flags |= NGX_HTTP_ZERO_IN_URI;
|
|
|
1333 continue;
|
|
|
1334 }
|
|
|
1335
|
|
254
|
1336 if ((ch == '/'
|
|
122
|
1337 #if (NGX_WIN32)
|
|
254
|
1338 || ch == '\\'
|
|
122
|
1339 #endif
|
|
254
|
1340 ) && len > 2)
|
|
122
|
1341 {
|
|
|
1342 /* detect "/../" */
|
|
|
1343
|
|
124
|
1344 if (p[0] == '.' && p[1] == '.' && p[2] == '/') {
|
|
122
|
1345 goto unsafe;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 #if (NGX_WIN32)
|
|
|
1349
|
|
|
1350 if (p[2] == '\\') {
|
|
|
1351 goto unsafe;
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 if (len > 3) {
|
|
|
1355
|
|
|
1356 /* detect "/.../" */
|
|
|
1357
|
|
124
|
1358 if (p[0] == '.' && p[1] == '.' && p[2] == '.'
|
|
|
1359 && (p[3] == '/' || p[3] == '\\'))
|
|
|
1360 {
|
|
122
|
1361 goto unsafe;
|
|
|
1362 }
|
|
|
1363 }
|
|
|
1364 #endif
|
|
|
1365 }
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 return NGX_OK;
|
|
|
1369
|
|
|
1370 unsafe:
|
|
|
1371
|
|
|
1372 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1373 "unsafe URI \"%V\" was detected", uri);
|
|
|
1374
|
|
|
1375 return NGX_ERROR;
|
|
|
1376 }
|
|
|
1377
|
|
|
1378
|
|
|
1379 ngx_int_t
|
|
58
|
1380 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1381 ngx_str_t *value)
|
|
|
1382 {
|
|
|
1383 ngx_uint_t i;
|
|
|
1384 u_char *start, *last, *end, ch;
|
|
|
1385 ngx_table_elt_t **h;
|
|
|
1386
|
|
|
1387 h = headers->elts;
|
|
|
1388
|
|
|
1389 for (i = 0; i < headers->nelts; i++) {
|
|
|
1390
|
|
|
1391 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1392 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1393
|
|
|
1394 if (name->len > h[i]->value.len) {
|
|
|
1395 continue;
|
|
|
1396 }
|
|
126
|
1397
|
|
58
|
1398 start = h[i]->value.data;
|
|
|
1399 end = h[i]->value.data + h[i]->value.len;
|
|
|
1400
|
|
|
1401 while (start < end) {
|
|
|
1402
|
|
|
1403 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1404 goto skip;
|
|
|
1405 }
|
|
|
1406
|
|
|
1407 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1408 /* void */
|
|
|
1409 }
|
|
|
1410
|
|
|
1411 if (value == NULL) {
|
|
|
1412 if (start == end || *start == ',') {
|
|
|
1413 return i;
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 goto skip;
|
|
|
1417 }
|
|
|
1418
|
|
|
1419 if (start == end || *start++ != '=') {
|
|
|
1420 /* the invalid header value */
|
|
|
1421 goto skip;
|
|
|
1422 }
|
|
|
1423
|
|
|
1424 while (start < end && *start == ' ') { start++; }
|
|
|
1425
|
|
|
1426 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1427 /* void */
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 value->len = last - start;
|
|
|
1431 value->data = start;
|
|
|
1432
|
|
|
1433 return i;
|
|
|
1434
|
|
|
1435 skip:
|
|
122
|
1436
|
|
58
|
1437 while (start < end) {
|
|
|
1438 ch = *start++;
|
|
|
1439 if (ch == ';' || ch == ',') {
|
|
|
1440 break;
|
|
|
1441 }
|
|
|
1442 }
|
|
|
1443
|
|
|
1444 while (start < end && *start == ' ') { start++; }
|
|
|
1445 }
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 return NGX_DECLINED;
|
|
|
1449 }
|
