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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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578
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115 sw_host_http_09,
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0
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116 sw_after_slash_in_uri,
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117 sw_check_uri,
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578
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118 sw_check_uri_http_09,
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0
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119 sw_uri,
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120 sw_http_09,
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121 sw_http_H,
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122 sw_http_HT,
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123 sw_http_HTT,
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124 sw_http_HTTP,
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125 sw_first_major_digit,
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126 sw_major_digit,
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127 sw_first_minor_digit,
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128 sw_minor_digit,
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344
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129 sw_spaces_after_digit,
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28
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130 sw_almost_done
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0
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131 } state;
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132
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133 state = r->state;
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134
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28
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135 for (p = b->pos; p < b->last; p++) {
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136 ch = *p;
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0
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137
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138 switch (state) {
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139
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140 /* HTTP methods: GET, HEAD, POST */
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141 case sw_start:
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28
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142 r->request_start = p;
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0
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143
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144 if (ch == CR || ch == LF) {
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145 break;
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146 }
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147
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506
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148 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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149 return NGX_HTTP_PARSE_INVALID_METHOD;
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150 }
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151
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152 state = sw_method;
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153 break;
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154
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155 case sw_method:
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156 if (ch == ' ') {
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58
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157 r->method_end = p - 1;
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0
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158 m = r->request_start;
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159
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188
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160 switch (p - m) {
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0
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161
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188
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162 case 3:
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300
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163 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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164 r->method = NGX_HTTP_GET;
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256
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165 break;
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166 }
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182
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167
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300
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168 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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169 r->method = NGX_HTTP_PUT;
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256
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170 break;
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0
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171 }
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256
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172
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188
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173 break;
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0
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174
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188
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175 case 4:
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256
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176 if (m[1] == 'O') {
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177
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300
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178 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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179 r->method = NGX_HTTP_POST;
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180 break;
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181 }
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182
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300
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183 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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184 r->method = NGX_HTTP_COPY;
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185 break;
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186 }
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0
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187
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300
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188 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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189 r->method = NGX_HTTP_MOVE;
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190 break;
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191 }
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192
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300
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193 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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194 r->method = NGX_HTTP_LOCK;
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195 break;
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196 }
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197
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198 } else {
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199
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300
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200 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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201 r->method = NGX_HTTP_HEAD;
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202 break;
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203 }
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0
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204 }
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256
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205
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188
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206 break;
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182
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207
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188
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208 case 5:
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300
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209 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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210 r->method = NGX_HTTP_MKCOL;
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211 }
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256
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212
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578
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213 if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) {
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214 r->method = NGX_HTTP_PATCH;
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215 }
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216
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300
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217 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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218 r->method = NGX_HTTP_TRACE;
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219 }
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220
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188
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221 break;
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186
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222
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188
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223 case 6:
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300
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224 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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225 r->method = NGX_HTTP_DELETE;
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256
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226 break;
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182
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227 }
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256
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228
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300
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229 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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230 r->method = NGX_HTTP_UNLOCK;
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231 break;
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232 }
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233
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234 break;
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235
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236 case 7:
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300
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237 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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238 {
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239 r->method = NGX_HTTP_OPTIONS;
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240 }
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241
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242 break;
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243
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244 case 8:
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300
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245 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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246 {
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247 r->method = NGX_HTTP_PROPFIND;
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248 }
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249
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250 break;
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251
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252 case 9:
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300
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253 if (ngx_str9cmp(m,
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254 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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255 {
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256 r->method = NGX_HTTP_PROPPATCH;
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257 }
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258
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188
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259 break;
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0
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260 }
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261
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262 state = sw_spaces_before_uri;
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263 break;
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264 }
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265
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506
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266 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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267 return NGX_HTTP_PARSE_INVALID_METHOD;
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268 }
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269
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270 break;
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271
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272 /* space* before URI */
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273 case sw_spaces_before_uri:
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56
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274
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582
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275 if (ch == '/') {
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254
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276 r->uri_start = p;
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277 state = sw_after_slash_in_uri;
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278 break;
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279 }
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280
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56
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281 c = (u_char) (ch | 0x20);
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70
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282 if (c >= 'a' && c <= 'z') {
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38
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283 r->schema_start = p;
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284 state = sw_schema;
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285 break;
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286 }
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287
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0
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288 switch (ch) {
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289 case ' ':
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290 break;
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291 default:
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292 return NGX_HTTP_PARSE_INVALID_REQUEST;
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293 }
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294 break;
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295
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296 case sw_schema:
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56
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297
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298 c = (u_char) (ch | 0x20);
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70
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299 if (c >= 'a' && c <= 'z') {
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38
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300 break;
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301 }
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302
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0
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303 switch (ch) {
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304 case ':':
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28
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305 r->schema_end = p;
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0
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306 state = sw_schema_slash;
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307 break;
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308 default:
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309 return NGX_HTTP_PARSE_INVALID_REQUEST;
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310 }
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311 break;
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312
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313 case sw_schema_slash:
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314 switch (ch) {
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315 case '/':
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316 state = sw_schema_slash_slash;
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317 break;
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318 default:
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319 return NGX_HTTP_PARSE_INVALID_REQUEST;
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320 }
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321 break;
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322
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323 case sw_schema_slash_slash:
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324 switch (ch) {
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325 case '/':
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258
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326 r->host_start = p + 1;
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0
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327 state = sw_host;
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328 break;
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329 default:
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330 return NGX_HTTP_PARSE_INVALID_REQUEST;
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331 }
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332 break;
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333
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334 case sw_host:
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56
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335
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336 c = (u_char) (ch | 0x20);
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70
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337 if (c >= 'a' && c <= 'z') {
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56
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338 break;
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339 }
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340
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254
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341 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
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38
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342 break;
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343 }
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344
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342
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345 r->host_end = p;
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346
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0
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347 switch (ch) {
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348 case ':':
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349 state = sw_port;
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350 break;
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351 case '/':
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28
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352 r->uri_start = p;
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0
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353 state = sw_after_slash_in_uri;
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354 break;
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342
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355 case ' ':
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356 /*
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357 * use single "/" from request line to preserve pointers,
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358 * if request line will be copied to large client buffer
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359 */
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360 r->uri_start = r->schema_end + 1;
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361 r->uri_end = r->schema_end + 2;
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578
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362 state = sw_host_http_09;
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342
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363 break;
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0
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364 default:
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365 return NGX_HTTP_PARSE_INVALID_REQUEST;
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366 }
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367 break;
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368
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369 case sw_port:
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38
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370 if (ch >= '0' && ch <= '9') {
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371 break;
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372 }
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373
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0
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374 switch (ch) {
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375 case '/':
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28
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376 r->port_end = p;
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377 r->uri_start = p;
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0
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378 state = sw_after_slash_in_uri;
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|
379 break;
|
|
342
|
380 case ' ':
|
|
|
381 r->port_end = p;
|
|
|
382 /*
|
|
|
383 * use single "/" from request line to preserve pointers,
|
|
|
384 * if request line will be copied to large client buffer
|
|
|
385 */
|
|
|
386 r->uri_start = r->schema_end + 1;
|
|
|
387 r->uri_end = r->schema_end + 2;
|
|
578
|
388 state = sw_host_http_09;
|
|
342
|
389 break;
|
|
0
|
390 default:
|
|
38
|
391 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
392 }
|
|
|
393 break;
|
|
|
394
|
|
578
|
395 /* space+ after "http://host[:port] " */
|
|
|
396 case sw_host_http_09:
|
|
|
397 switch (ch) {
|
|
|
398 case ' ':
|
|
|
399 break;
|
|
|
400 case CR:
|
|
|
401 r->http_minor = 9;
|
|
|
402 state = sw_almost_done;
|
|
|
403 break;
|
|
|
404 case LF:
|
|
|
405 r->http_minor = 9;
|
|
|
406 goto done;
|
|
|
407 case 'H':
|
|
|
408 r->http_protocol.data = p;
|
|
|
409 state = sw_http_H;
|
|
|
410 break;
|
|
|
411 default:
|
|
|
412 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
413 }
|
|
|
414 break;
|
|
|
415
|
|
|
416
|
|
10
|
417 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
418 case sw_after_slash_in_uri:
|
|
38
|
419
|
|
254
|
420 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
421 state = sw_check_uri;
|
|
|
422 break;
|
|
|
423 }
|
|
|
424
|
|
0
|
425 switch (ch) {
|
|
38
|
426 case ' ':
|
|
|
427 r->uri_end = p;
|
|
578
|
428 state = sw_check_uri_http_09;
|
|
38
|
429 break;
|
|
0
|
430 case CR:
|
|
28
|
431 r->uri_end = p;
|
|
0
|
432 r->http_minor = 9;
|
|
|
433 state = sw_almost_done;
|
|
|
434 break;
|
|
|
435 case LF:
|
|
28
|
436 r->uri_end = p;
|
|
0
|
437 r->http_minor = 9;
|
|
28
|
438 goto done;
|
|
0
|
439 case '.':
|
|
2
|
440 r->complex_uri = 1;
|
|
|
441 state = sw_uri;
|
|
|
442 break;
|
|
0
|
443 case '%':
|
|
2
|
444 r->quoted_uri = 1;
|
|
0
|
445 state = sw_uri;
|
|
|
446 break;
|
|
38
|
447 case '/':
|
|
|
448 r->complex_uri = 1;
|
|
|
449 state = sw_uri;
|
|
|
450 break;
|
|
10
|
451 #if (NGX_WIN32)
|
|
|
452 case '\\':
|
|
|
453 r->complex_uri = 1;
|
|
38
|
454 state = sw_uri;
|
|
10
|
455 break;
|
|
|
456 #endif
|
|
38
|
457 case '?':
|
|
|
458 r->args_start = p + 1;
|
|
|
459 state = sw_uri;
|
|
0
|
460 break;
|
|
254
|
461 case '#':
|
|
|
462 r->complex_uri = 1;
|
|
|
463 state = sw_uri;
|
|
|
464 break;
|
|
34
|
465 case '+':
|
|
|
466 r->plus_in_uri = 1;
|
|
|
467 break;
|
|
38
|
468 case '\0':
|
|
572
|
469 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
470 default:
|
|
|
471 state = sw_check_uri;
|
|
|
472 break;
|
|
|
473 }
|
|
|
474 break;
|
|
|
475
|
|
10
|
476 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
477 case sw_check_uri:
|
|
38
|
478
|
|
254
|
479 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
480 break;
|
|
|
481 }
|
|
|
482
|
|
0
|
483 switch (ch) {
|
|
38
|
484 case '/':
|
|
|
485 r->uri_ext = NULL;
|
|
|
486 state = sw_after_slash_in_uri;
|
|
|
487 break;
|
|
|
488 case '.':
|
|
|
489 r->uri_ext = p + 1;
|
|
|
490 break;
|
|
|
491 case ' ':
|
|
|
492 r->uri_end = p;
|
|
578
|
493 state = sw_check_uri_http_09;
|
|
38
|
494 break;
|
|
0
|
495 case CR:
|
|
28
|
496 r->uri_end = p;
|
|
0
|
497 r->http_minor = 9;
|
|
|
498 state = sw_almost_done;
|
|
|
499 break;
|
|
|
500 case LF:
|
|
28
|
501 r->uri_end = p;
|
|
0
|
502 r->http_minor = 9;
|
|
28
|
503 goto done;
|
|
10
|
504 #if (NGX_WIN32)
|
|
|
505 case '\\':
|
|
|
506 r->complex_uri = 1;
|
|
|
507 state = sw_after_slash_in_uri;
|
|
|
508 break;
|
|
|
509 #endif
|
|
38
|
510 case '%':
|
|
|
511 r->quoted_uri = 1;
|
|
|
512 state = sw_uri;
|
|
0
|
513 break;
|
|
|
514 case '?':
|
|
28
|
515 r->args_start = p + 1;
|
|
0
|
516 state = sw_uri;
|
|
|
517 break;
|
|
254
|
518 case '#':
|
|
|
519 r->complex_uri = 1;
|
|
|
520 state = sw_uri;
|
|
|
521 break;
|
|
206
|
522 case '+':
|
|
|
523 r->plus_in_uri = 1;
|
|
|
524 break;
|
|
38
|
525 case '\0':
|
|
572
|
526 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
527 }
|
|
|
528 break;
|
|
|
529
|
|
578
|
530 /* space+ after URI */
|
|
|
531 case sw_check_uri_http_09:
|
|
|
532 switch (ch) {
|
|
|
533 case ' ':
|
|
|
534 break;
|
|
|
535 case CR:
|
|
|
536 r->http_minor = 9;
|
|
|
537 state = sw_almost_done;
|
|
|
538 break;
|
|
|
539 case LF:
|
|
|
540 r->http_minor = 9;
|
|
|
541 goto done;
|
|
|
542 case 'H':
|
|
|
543 r->http_protocol.data = p;
|
|
|
544 state = sw_http_H;
|
|
|
545 break;
|
|
|
546 default:
|
|
|
547 r->space_in_uri = 1;
|
|
|
548 state = sw_check_uri;
|
|
|
549 break;
|
|
|
550 }
|
|
|
551 break;
|
|
|
552
|
|
|
553
|
|
0
|
554 /* URI */
|
|
|
555 case sw_uri:
|
|
254
|
556
|
|
|
557 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
558 break;
|
|
|
559 }
|
|
|
560
|
|
0
|
561 switch (ch) {
|
|
38
|
562 case ' ':
|
|
|
563 r->uri_end = p;
|
|
|
564 state = sw_http_09;
|
|
|
565 break;
|
|
0
|
566 case CR:
|
|
28
|
567 r->uri_end = p;
|
|
0
|
568 r->http_minor = 9;
|
|
|
569 state = sw_almost_done;
|
|
|
570 break;
|
|
|
571 case LF:
|
|
28
|
572 r->uri_end = p;
|
|
0
|
573 r->http_minor = 9;
|
|
28
|
574 goto done;
|
|
254
|
575 case '#':
|
|
|
576 r->complex_uri = 1;
|
|
|
577 break;
|
|
38
|
578 case '\0':
|
|
572
|
579 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
580 }
|
|
|
581 break;
|
|
|
582
|
|
|
583 /* space+ after URI */
|
|
|
584 case sw_http_09:
|
|
|
585 switch (ch) {
|
|
|
586 case ' ':
|
|
|
587 break;
|
|
|
588 case CR:
|
|
|
589 r->http_minor = 9;
|
|
|
590 state = sw_almost_done;
|
|
|
591 break;
|
|
|
592 case LF:
|
|
|
593 r->http_minor = 9;
|
|
28
|
594 goto done;
|
|
0
|
595 case 'H':
|
|
28
|
596 r->http_protocol.data = p;
|
|
0
|
597 state = sw_http_H;
|
|
|
598 break;
|
|
|
599 default:
|
|
578
|
600 r->space_in_uri = 1;
|
|
|
601 state = sw_uri;
|
|
|
602 break;
|
|
0
|
603 }
|
|
|
604 break;
|
|
|
605
|
|
|
606 case sw_http_H:
|
|
|
607 switch (ch) {
|
|
|
608 case 'T':
|
|
|
609 state = sw_http_HT;
|
|
|
610 break;
|
|
|
611 default:
|
|
|
612 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
613 }
|
|
|
614 break;
|
|
|
615
|
|
|
616 case sw_http_HT:
|
|
|
617 switch (ch) {
|
|
|
618 case 'T':
|
|
|
619 state = sw_http_HTT;
|
|
|
620 break;
|
|
|
621 default:
|
|
|
622 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
623 }
|
|
|
624 break;
|
|
|
625
|
|
|
626 case sw_http_HTT:
|
|
|
627 switch (ch) {
|
|
|
628 case 'P':
|
|
|
629 state = sw_http_HTTP;
|
|
|
630 break;
|
|
|
631 default:
|
|
|
632 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
633 }
|
|
|
634 break;
|
|
|
635
|
|
|
636 case sw_http_HTTP:
|
|
|
637 switch (ch) {
|
|
|
638 case '/':
|
|
|
639 state = sw_first_major_digit;
|
|
|
640 break;
|
|
|
641 default:
|
|
|
642 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
643 }
|
|
|
644 break;
|
|
|
645
|
|
|
646 /* first digit of major HTTP version */
|
|
|
647 case sw_first_major_digit:
|
|
|
648 if (ch < '1' || ch > '9') {
|
|
|
649 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
650 }
|
|
|
651
|
|
|
652 r->http_major = ch - '0';
|
|
|
653 state = sw_major_digit;
|
|
|
654 break;
|
|
|
655
|
|
|
656 /* major HTTP version or dot */
|
|
|
657 case sw_major_digit:
|
|
|
658 if (ch == '.') {
|
|
|
659 state = sw_first_minor_digit;
|
|
|
660 break;
|
|
|
661 }
|
|
|
662
|
|
|
663 if (ch < '0' || ch > '9') {
|
|
|
664 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
665 }
|
|
|
666
|
|
|
667 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
668 break;
|
|
|
669
|
|
|
670 /* first digit of minor HTTP version */
|
|
|
671 case sw_first_minor_digit:
|
|
|
672 if (ch < '0' || ch > '9') {
|
|
|
673 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
674 }
|
|
|
675
|
|
|
676 r->http_minor = ch - '0';
|
|
|
677 state = sw_minor_digit;
|
|
|
678 break;
|
|
|
679
|
|
|
680 /* minor HTTP version or end of request line */
|
|
|
681 case sw_minor_digit:
|
|
|
682 if (ch == CR) {
|
|
|
683 state = sw_almost_done;
|
|
|
684 break;
|
|
|
685 }
|
|
|
686
|
|
|
687 if (ch == LF) {
|
|
28
|
688 goto done;
|
|
0
|
689 }
|
|
|
690
|
|
344
|
691 if (ch == ' ') {
|
|
|
692 state = sw_spaces_after_digit;
|
|
|
693 break;
|
|
|
694 }
|
|
|
695
|
|
0
|
696 if (ch < '0' || ch > '9') {
|
|
|
697 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
698 }
|
|
|
699
|
|
|
700 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
701 break;
|
|
|
702
|
|
344
|
703 case sw_spaces_after_digit:
|
|
|
704 switch (ch) {
|
|
|
705 case ' ':
|
|
|
706 break;
|
|
|
707 case CR:
|
|
|
708 state = sw_almost_done;
|
|
|
709 break;
|
|
|
710 case LF:
|
|
|
711 goto done;
|
|
|
712 default:
|
|
|
713 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
714 }
|
|
|
715 break;
|
|
|
716
|
|
0
|
717 /* end of request line */
|
|
|
718 case sw_almost_done:
|
|
28
|
719 r->request_end = p - 1;
|
|
0
|
720 switch (ch) {
|
|
|
721 case LF:
|
|
28
|
722 goto done;
|
|
0
|
723 default:
|
|
|
724 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
725 }
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
|
729 b->pos = p;
|
|
28
|
730 r->state = state;
|
|
0
|
731
|
|
28
|
732 return NGX_AGAIN;
|
|
0
|
733
|
|
28
|
734 done:
|
|
|
735
|
|
|
736 b->pos = p + 1;
|
|
0
|
737
|
|
28
|
738 if (r->request_end == NULL) {
|
|
|
739 r->request_end = p;
|
|
|
740 }
|
|
0
|
741
|
|
28
|
742 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
743 r->state = sw_start;
|
|
0
|
744
|
|
28
|
745 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
746 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
747 }
|
|
28
|
748
|
|
|
749 return NGX_OK;
|
|
0
|
750 }
|
|
|
751
|
|
|
752
|
|
58
|
753 ngx_int_t
|
|
412
|
754 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
755 ngx_uint_t allow_underscores)
|
|
0
|
756 {
|
|
56
|
757 u_char c, ch, *p;
|
|
198
|
758 ngx_uint_t hash, i;
|
|
0
|
759 enum {
|
|
|
760 sw_start = 0,
|
|
|
761 sw_name,
|
|
|
762 sw_space_before_value,
|
|
|
763 sw_value,
|
|
|
764 sw_space_after_value,
|
|
52
|
765 sw_ignore_line,
|
|
0
|
766 sw_almost_done,
|
|
52
|
767 sw_header_almost_done
|
|
0
|
768 } state;
|
|
|
769
|
|
250
|
770 /* the last '\0' is not needed because string is zero terminated */
|
|
|
771
|
|
198
|
772 static u_char lowcase[] =
|
|
|
773 "\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"
|
|
|
774 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
775 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
776 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
777 "\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"
|
|
|
778 "\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"
|
|
|
779 "\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"
|
|
|
780 "\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";
|
|
|
781
|
|
0
|
782 state = r->state;
|
|
56
|
783 hash = r->header_hash;
|
|
198
|
784 i = r->lowcase_index;
|
|
0
|
785
|
|
28
|
786 for (p = b->pos; p < b->last; p++) {
|
|
|
787 ch = *p;
|
|
0
|
788
|
|
|
789 switch (state) {
|
|
|
790
|
|
|
791 /* first char */
|
|
|
792 case sw_start:
|
|
524
|
793 r->header_name_start = p;
|
|
60
|
794 r->invalid_header = 0;
|
|
|
795
|
|
0
|
796 switch (ch) {
|
|
|
797 case CR:
|
|
28
|
798 r->header_end = p;
|
|
0
|
799 state = sw_header_almost_done;
|
|
|
800 break;
|
|
|
801 case LF:
|
|
28
|
802 r->header_end = p;
|
|
|
803 goto header_done;
|
|
0
|
804 default:
|
|
|
805 state = sw_name;
|
|
|
806
|
|
198
|
807 c = lowcase[ch];
|
|
0
|
808
|
|
198
|
809 if (c) {
|
|
|
810 hash = ngx_hash(0, c);
|
|
|
811 r->lowcase_header[0] = c;
|
|
|
812 i = 1;
|
|
0
|
813 break;
|
|
|
814 }
|
|
|
815
|
|
60
|
816 r->invalid_header = 1;
|
|
|
817
|
|
52
|
818 break;
|
|
0
|
819
|
|
|
820 }
|
|
|
821 break;
|
|
|
822
|
|
|
823 /* header name */
|
|
|
824 case sw_name:
|
|
198
|
825 c = lowcase[ch];
|
|
|
826
|
|
|
827 if (c) {
|
|
|
828 hash = ngx_hash(hash, c);
|
|
|
829 r->lowcase_header[i++] = c;
|
|
370
|
830 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
831 break;
|
|
|
832 }
|
|
|
833
|
|
412
|
834 if (ch == '_') {
|
|
|
835 if (allow_underscores) {
|
|
|
836 hash = ngx_hash(hash, ch);
|
|
|
837 r->lowcase_header[i++] = ch;
|
|
|
838 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
839
|
|
|
840 } else {
|
|
|
841 r->invalid_header = 1;
|
|
|
842 }
|
|
|
843
|
|
|
844 break;
|
|
|
845 }
|
|
|
846
|
|
0
|
847 if (ch == ':') {
|
|
28
|
848 r->header_name_end = p;
|
|
0
|
849 state = sw_space_before_value;
|
|
|
850 break;
|
|
|
851 }
|
|
|
852
|
|
58
|
853 if (ch == CR) {
|
|
|
854 r->header_name_end = p;
|
|
|
855 r->header_start = p;
|
|
|
856 r->header_end = p;
|
|
|
857 state = sw_almost_done;
|
|
|
858 break;
|
|
|
859 }
|
|
|
860
|
|
|
861 if (ch == LF) {
|
|
|
862 r->header_name_end = p;
|
|
|
863 r->header_start = p;
|
|
|
864 r->header_end = p;
|
|
|
865 goto done;
|
|
|
866 }
|
|
|
867
|
|
2
|
868 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
869 if (ch == '/'
|
|
58
|
870 && r->upstream
|
|
|
871 && p - r->header_name_start == 4
|
|
|
872 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
873 {
|
|
|
874 state = sw_ignore_line;
|
|
|
875 break;
|
|
|
876 }
|
|
|
877
|
|
60
|
878 r->invalid_header = 1;
|
|
|
879
|
|
52
|
880 break;
|
|
0
|
881
|
|
|
882 /* space* before header value */
|
|
|
883 case sw_space_before_value:
|
|
|
884 switch (ch) {
|
|
|
885 case ' ':
|
|
|
886 break;
|
|
|
887 case CR:
|
|
58
|
888 r->header_start = p;
|
|
|
889 r->header_end = p;
|
|
0
|
890 state = sw_almost_done;
|
|
|
891 break;
|
|
|
892 case LF:
|
|
58
|
893 r->header_start = p;
|
|
|
894 r->header_end = p;
|
|
28
|
895 goto done;
|
|
0
|
896 default:
|
|
28
|
897 r->header_start = p;
|
|
0
|
898 state = sw_value;
|
|
|
899 break;
|
|
|
900 }
|
|
|
901 break;
|
|
|
902
|
|
|
903 /* header value */
|
|
|
904 case sw_value:
|
|
|
905 switch (ch) {
|
|
|
906 case ' ':
|
|
28
|
907 r->header_end = p;
|
|
0
|
908 state = sw_space_after_value;
|
|
|
909 break;
|
|
|
910 case CR:
|
|
28
|
911 r->header_end = p;
|
|
0
|
912 state = sw_almost_done;
|
|
|
913 break;
|
|
|
914 case LF:
|
|
28
|
915 r->header_end = p;
|
|
|
916 goto done;
|
|
0
|
917 }
|
|
|
918 break;
|
|
|
919
|
|
|
920 /* space* before end of header line */
|
|
|
921 case sw_space_after_value:
|
|
|
922 switch (ch) {
|
|
|
923 case ' ':
|
|
|
924 break;
|
|
|
925 case CR:
|
|
|
926 state = sw_almost_done;
|
|
|
927 break;
|
|
|
928 case LF:
|
|
28
|
929 goto done;
|
|
0
|
930 default:
|
|
|
931 state = sw_value;
|
|
|
932 break;
|
|
|
933 }
|
|
|
934 break;
|
|
|
935
|
|
|
936 /* ignore header line */
|
|
|
937 case sw_ignore_line:
|
|
|
938 switch (ch) {
|
|
|
939 case LF:
|
|
|
940 state = sw_start;
|
|
|
941 break;
|
|
|
942 default:
|
|
|
943 break;
|
|
|
944 }
|
|
|
945 break;
|
|
|
946
|
|
|
947 /* end of header line */
|
|
|
948 case sw_almost_done:
|
|
|
949 switch (ch) {
|
|
370
|
950 case LF:
|
|
|
951 goto done;
|
|
172
|
952 case CR:
|
|
|
953 break;
|
|
0
|
954 default:
|
|
|
955 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
956 }
|
|
174
|
957 break;
|
|
0
|
958
|
|
|
959 /* end of header */
|
|
|
960 case sw_header_almost_done:
|
|
|
961 switch (ch) {
|
|
|
962 case LF:
|
|
28
|
963 goto header_done;
|
|
0
|
964 default:
|
|
|
965 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
966 }
|
|
|
967 }
|
|
|
968 }
|
|
|
969
|
|
|
970 b->pos = p;
|
|
28
|
971 r->state = state;
|
|
56
|
972 r->header_hash = hash;
|
|
198
|
973 r->lowcase_index = i;
|
|
0
|
974
|
|
28
|
975 return NGX_AGAIN;
|
|
|
976
|
|
|
977 done:
|
|
|
978
|
|
|
979 b->pos = p + 1;
|
|
|
980 r->state = sw_start;
|
|
56
|
981 r->header_hash = hash;
|
|
198
|
982 r->lowcase_index = i;
|
|
0
|
983
|
|
28
|
984 return NGX_OK;
|
|
|
985
|
|
|
986 header_done:
|
|
0
|
987
|
|
28
|
988 b->pos = p + 1;
|
|
|
989 r->state = sw_start;
|
|
|
990
|
|
|
991 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
992 }
|
|
|
993
|
|
|
994
|
|
58
|
995 ngx_int_t
|
|
342
|
996 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
997 {
|
|
|
998 u_char c, ch, decoded, *p, *u;
|
|
|
999 enum {
|
|
|
1000 sw_usual = 0,
|
|
|
1001 sw_slash,
|
|
|
1002 sw_dot,
|
|
|
1003 sw_dot_dot,
|
|
|
1004 sw_quoted,
|
|
|
1005 sw_quoted_second
|
|
|
1006 } state, quoted_state;
|
|
|
1007
|
|
28
|
1008 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1009 decoded = '\0';
|
|
|
1010 quoted_state = sw_usual;
|
|
28
|
1011 #endif
|
|
0
|
1012
|
|
|
1013 state = sw_usual;
|
|
|
1014 p = r->uri_start;
|
|
|
1015 u = r->uri.data;
|
|
|
1016 r->uri_ext = NULL;
|
|
10
|
1017 r->args_start = NULL;
|
|
0
|
1018
|
|
|
1019 ch = *p++;
|
|
|
1020
|
|
28
|
1021 while (p <= r->uri_end) {
|
|
10
|
1022
|
|
|
1023 /*
|
|
28
|
1024 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
1025 * because after the URI there is always at least one charcter:
|
|
|
1026 * the line feed
|
|
|
1027 */
|
|
0
|
1028
|
|
|
1029 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1030 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1031
|
|
|
1032 switch (state) {
|
|
122
|
1033
|
|
0
|
1034 case sw_usual:
|
|
254
|
1035
|
|
|
1036 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1037 *u++ = ch;
|
|
|
1038 ch = *p++;
|
|
|
1039 break;
|
|
|
1040 }
|
|
|
1041
|
|
0
|
1042 switch(ch) {
|
|
10
|
1043 #if (NGX_WIN32)
|
|
|
1044 case '\\':
|
|
|
1045 r->uri_ext = NULL;
|
|
|
1046
|
|
|
1047 if (p == r->uri_start + r->uri.len) {
|
|
|
1048
|
|
|
1049 /*
|
|
|
1050 * we omit the last "\" to cause redirect because
|
|
|
1051 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1052 */
|
|
|
1053
|
|
|
1054 break;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 state = sw_slash;
|
|
|
1058 *u++ = '/';
|
|
|
1059 break;
|
|
|
1060 #endif
|
|
0
|
1061 case '/':
|
|
|
1062 r->uri_ext = NULL;
|
|
|
1063 state = sw_slash;
|
|
|
1064 *u++ = ch;
|
|
|
1065 break;
|
|
|
1066 case '%':
|
|
|
1067 quoted_state = state;
|
|
|
1068 state = sw_quoted;
|
|
|
1069 break;
|
|
10
|
1070 case '?':
|
|
|
1071 r->args_start = p;
|
|
254
|
1072 goto args;
|
|
|
1073 case '#':
|
|
28
|
1074 goto done;
|
|
0
|
1075 case '.':
|
|
|
1076 r->uri_ext = u + 1;
|
|
22
|
1077 *u++ = ch;
|
|
|
1078 break;
|
|
206
|
1079 case '+':
|
|
|
1080 r->plus_in_uri = 1;
|
|
0
|
1081 default:
|
|
|
1082 *u++ = ch;
|
|
|
1083 break;
|
|
|
1084 }
|
|
254
|
1085
|
|
0
|
1086 ch = *p++;
|
|
|
1087 break;
|
|
|
1088
|
|
|
1089 case sw_slash:
|
|
254
|
1090
|
|
|
1091 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1092 state = sw_usual;
|
|
|
1093 *u++ = ch;
|
|
|
1094 ch = *p++;
|
|
|
1095 break;
|
|
|
1096 }
|
|
|
1097
|
|
0
|
1098 switch(ch) {
|
|
10
|
1099 #if (NGX_WIN32)
|
|
|
1100 case '\\':
|
|
342
|
1101 break;
|
|
10
|
1102 #endif
|
|
0
|
1103 case '/':
|
|
356
|
1104 if (!merge_slashes) {
|
|
342
|
1105 *u++ = ch;
|
|
|
1106 }
|
|
0
|
1107 break;
|
|
|
1108 case '.':
|
|
|
1109 state = sw_dot;
|
|
|
1110 *u++ = ch;
|
|
|
1111 break;
|
|
|
1112 case '%':
|
|
|
1113 quoted_state = state;
|
|
|
1114 state = sw_quoted;
|
|
|
1115 break;
|
|
28
|
1116 case '?':
|
|
|
1117 r->args_start = p;
|
|
254
|
1118 goto args;
|
|
|
1119 case '#':
|
|
28
|
1120 goto done;
|
|
206
|
1121 case '+':
|
|
|
1122 r->plus_in_uri = 1;
|
|
0
|
1123 default:
|
|
|
1124 state = sw_usual;
|
|
|
1125 *u++ = ch;
|
|
|
1126 break;
|
|
|
1127 }
|
|
254
|
1128
|
|
0
|
1129 ch = *p++;
|
|
|
1130 break;
|
|
|
1131
|
|
|
1132 case sw_dot:
|
|
254
|
1133
|
|
|
1134 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1135 state = sw_usual;
|
|
|
1136 *u++ = ch;
|
|
|
1137 ch = *p++;
|
|
|
1138 break;
|
|
|
1139 }
|
|
|
1140
|
|
0
|
1141 switch(ch) {
|
|
10
|
1142 #if (NGX_WIN32)
|
|
|
1143 case '\\':
|
|
|
1144 #endif
|
|
0
|
1145 case '/':
|
|
|
1146 state = sw_slash;
|
|
|
1147 u--;
|
|
|
1148 break;
|
|
|
1149 case '.':
|
|
|
1150 state = sw_dot_dot;
|
|
|
1151 *u++ = ch;
|
|
|
1152 break;
|
|
|
1153 case '%':
|
|
|
1154 quoted_state = state;
|
|
|
1155 state = sw_quoted;
|
|
|
1156 break;
|
|
28
|
1157 case '?':
|
|
|
1158 r->args_start = p;
|
|
254
|
1159 goto args;
|
|
|
1160 case '#':
|
|
28
|
1161 goto done;
|
|
206
|
1162 case '+':
|
|
|
1163 r->plus_in_uri = 1;
|
|
0
|
1164 default:
|
|
|
1165 state = sw_usual;
|
|
|
1166 *u++ = ch;
|
|
|
1167 break;
|
|
|
1168 }
|
|
254
|
1169
|
|
0
|
1170 ch = *p++;
|
|
|
1171 break;
|
|
|
1172
|
|
|
1173 case sw_dot_dot:
|
|
254
|
1174
|
|
|
1175 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1176 state = sw_usual;
|
|
|
1177 *u++ = ch;
|
|
|
1178 ch = *p++;
|
|
|
1179 break;
|
|
|
1180 }
|
|
|
1181
|
|
0
|
1182 switch(ch) {
|
|
10
|
1183 #if (NGX_WIN32)
|
|
|
1184 case '\\':
|
|
|
1185 #endif
|
|
0
|
1186 case '/':
|
|
|
1187 state = sw_slash;
|
|
526
|
1188 u -= 5;
|
|
|
1189 for ( ;; ) {
|
|
|
1190 if (u < r->uri.data) {
|
|
|
1191 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1192 }
|
|
|
1193 if (*u == '/') {
|
|
|
1194 u++;
|
|
|
1195 break;
|
|
|
1196 }
|
|
0
|
1197 u--;
|
|
|
1198 }
|
|
|
1199 break;
|
|
|
1200 case '%':
|
|
|
1201 quoted_state = state;
|
|
|
1202 state = sw_quoted;
|
|
|
1203 break;
|
|
28
|
1204 case '?':
|
|
|
1205 r->args_start = p;
|
|
254
|
1206 goto args;
|
|
|
1207 case '#':
|
|
28
|
1208 goto done;
|
|
206
|
1209 case '+':
|
|
|
1210 r->plus_in_uri = 1;
|
|
0
|
1211 default:
|
|
|
1212 state = sw_usual;
|
|
|
1213 *u++ = ch;
|
|
|
1214 break;
|
|
|
1215 }
|
|
254
|
1216
|
|
0
|
1217 ch = *p++;
|
|
|
1218 break;
|
|
|
1219
|
|
|
1220 case sw_quoted:
|
|
216
|
1221 r->quoted_uri = 1;
|
|
|
1222
|
|
0
|
1223 if (ch >= '0' && ch <= '9') {
|
|
|
1224 decoded = (u_char) (ch - '0');
|
|
|
1225 state = sw_quoted_second;
|
|
|
1226 ch = *p++;
|
|
|
1227 break;
|
|
|
1228 }
|
|
|
1229
|
|
|
1230 c = (u_char) (ch | 0x20);
|
|
|
1231 if (c >= 'a' && c <= 'f') {
|
|
|
1232 decoded = (u_char) (c - 'a' + 10);
|
|
|
1233 state = sw_quoted_second;
|
|
|
1234 ch = *p++;
|
|
|
1235 break;
|
|
|
1236 }
|
|
|
1237
|
|
|
1238 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1239
|
|
|
1240 case sw_quoted_second:
|
|
|
1241 if (ch >= '0' && ch <= '9') {
|
|
|
1242 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1243
|
|
576
|
1244 if (ch == '%' || ch == '#') {
|
|
0
|
1245 state = sw_usual;
|
|
|
1246 *u++ = ch;
|
|
|
1247 ch = *p++;
|
|
|
1248 break;
|
|
254
|
1249
|
|
|
1250 } else if (ch == '\0') {
|
|
572
|
1251 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1252 }
|
|
|
1253
|
|
0
|
1254 state = quoted_state;
|
|
|
1255 break;
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 c = (u_char) (ch | 0x20);
|
|
|
1259 if (c >= 'a' && c <= 'f') {
|
|
|
1260 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1261
|
|
28
|
1262 if (ch == '?') {
|
|
576
|
1263 state = sw_usual;
|
|
0
|
1264 *u++ = ch;
|
|
|
1265 ch = *p++;
|
|
576
|
1266 break;
|
|
206
|
1267
|
|
|
1268 } else if (ch == '+') {
|
|
|
1269 r->plus_in_uri = 1;
|
|
0
|
1270 }
|
|
206
|
1271
|
|
0
|
1272 state = quoted_state;
|
|
|
1273 break;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
28
|
1280 done:
|
|
|
1281
|
|
0
|
1282 r->uri.len = u - r->uri.data;
|
|
254
|
1283
|
|
|
1284 if (r->uri_ext) {
|
|
|
1285 r->exten.len = u - r->uri_ext;
|
|
|
1286 r->exten.data = r->uri_ext;
|
|
|
1287 }
|
|
|
1288
|
|
|
1289 r->uri_ext = NULL;
|
|
|
1290
|
|
|
1291 return NGX_OK;
|
|
|
1292
|
|
|
1293 args:
|
|
|
1294
|
|
|
1295 while (p < r->uri_end) {
|
|
|
1296 if (*p++ != '#') {
|
|
|
1297 continue;
|
|
|
1298 }
|
|
|
1299
|
|
|
1300 r->args.len = p - 1 - r->args_start;
|
|
|
1301 r->args.data = r->args_start;
|
|
|
1302 r->args_start = NULL;
|
|
|
1303
|
|
|
1304 break;
|
|
|
1305 }
|
|
|
1306
|
|
|
1307 r->uri.len = u - r->uri.data;
|
|
0
|
1308
|
|
|
1309 if (r->uri_ext) {
|
|
|
1310 r->exten.len = u - r->uri_ext;
|
|
10
|
1311 r->exten.data = r->uri_ext;
|
|
0
|
1312 }
|
|
|
1313
|
|
|
1314 r->uri_ext = NULL;
|
|
|
1315
|
|
|
1316 return NGX_OK;
|
|
|
1317 }
|
|
58
|
1318
|
|
|
1319
|
|
|
1320 ngx_int_t
|
|
580
|
1321 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1322 ngx_http_status_t *status)
|
|
|
1323 {
|
|
|
1324 u_char ch;
|
|
|
1325 u_char *p;
|
|
|
1326 enum {
|
|
|
1327 sw_start = 0,
|
|
|
1328 sw_H,
|
|
|
1329 sw_HT,
|
|
|
1330 sw_HTT,
|
|
|
1331 sw_HTTP,
|
|
|
1332 sw_first_major_digit,
|
|
|
1333 sw_major_digit,
|
|
|
1334 sw_first_minor_digit,
|
|
|
1335 sw_minor_digit,
|
|
|
1336 sw_status,
|
|
|
1337 sw_space_after_status,
|
|
|
1338 sw_status_text,
|
|
|
1339 sw_almost_done
|
|
|
1340 } state;
|
|
|
1341
|
|
|
1342 state = r->state;
|
|
|
1343
|
|
|
1344 for (p = b->pos; p < b->last; p++) {
|
|
|
1345 ch = *p;
|
|
|
1346
|
|
|
1347 switch (state) {
|
|
|
1348
|
|
|
1349 /* "HTTP/" */
|
|
|
1350 case sw_start:
|
|
|
1351 switch (ch) {
|
|
|
1352 case 'H':
|
|
|
1353 state = sw_H;
|
|
|
1354 break;
|
|
|
1355 default:
|
|
|
1356 return NGX_ERROR;
|
|
|
1357 }
|
|
|
1358 break;
|
|
|
1359
|
|
|
1360 case sw_H:
|
|
|
1361 switch (ch) {
|
|
|
1362 case 'T':
|
|
|
1363 state = sw_HT;
|
|
|
1364 break;
|
|
|
1365 default:
|
|
|
1366 return NGX_ERROR;
|
|
|
1367 }
|
|
|
1368 break;
|
|
|
1369
|
|
|
1370 case sw_HT:
|
|
|
1371 switch (ch) {
|
|
|
1372 case 'T':
|
|
|
1373 state = sw_HTT;
|
|
|
1374 break;
|
|
|
1375 default:
|
|
|
1376 return NGX_ERROR;
|
|
|
1377 }
|
|
|
1378 break;
|
|
|
1379
|
|
|
1380 case sw_HTT:
|
|
|
1381 switch (ch) {
|
|
|
1382 case 'P':
|
|
|
1383 state = sw_HTTP;
|
|
|
1384 break;
|
|
|
1385 default:
|
|
|
1386 return NGX_ERROR;
|
|
|
1387 }
|
|
|
1388 break;
|
|
|
1389
|
|
|
1390 case sw_HTTP:
|
|
|
1391 switch (ch) {
|
|
|
1392 case '/':
|
|
|
1393 state = sw_first_major_digit;
|
|
|
1394 break;
|
|
|
1395 default:
|
|
|
1396 return NGX_ERROR;
|
|
|
1397 }
|
|
|
1398 break;
|
|
|
1399
|
|
|
1400 /* the first digit of major HTTP version */
|
|
|
1401 case sw_first_major_digit:
|
|
|
1402 if (ch < '1' || ch > '9') {
|
|
|
1403 return NGX_ERROR;
|
|
|
1404 }
|
|
|
1405
|
|
|
1406 state = sw_major_digit;
|
|
|
1407 break;
|
|
|
1408
|
|
|
1409 /* the major HTTP version or dot */
|
|
|
1410 case sw_major_digit:
|
|
|
1411 if (ch == '.') {
|
|
|
1412 state = sw_first_minor_digit;
|
|
|
1413 break;
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 if (ch < '0' || ch > '9') {
|
|
|
1417 return NGX_ERROR;
|
|
|
1418 }
|
|
|
1419
|
|
|
1420 break;
|
|
|
1421
|
|
|
1422 /* the first digit of minor HTTP version */
|
|
|
1423 case sw_first_minor_digit:
|
|
|
1424 if (ch < '0' || ch > '9') {
|
|
|
1425 return NGX_ERROR;
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 state = sw_minor_digit;
|
|
|
1429 break;
|
|
|
1430
|
|
|
1431 /* the minor HTTP version or the end of the request line */
|
|
|
1432 case sw_minor_digit:
|
|
|
1433 if (ch == ' ') {
|
|
|
1434 state = sw_status;
|
|
|
1435 break;
|
|
|
1436 }
|
|
|
1437
|
|
|
1438 if (ch < '0' || ch > '9') {
|
|
|
1439 return NGX_ERROR;
|
|
|
1440 }
|
|
|
1441
|
|
|
1442 break;
|
|
|
1443
|
|
|
1444 /* HTTP status code */
|
|
|
1445 case sw_status:
|
|
|
1446 if (ch == ' ') {
|
|
|
1447 break;
|
|
|
1448 }
|
|
|
1449
|
|
|
1450 if (ch < '0' || ch > '9') {
|
|
|
1451 return NGX_ERROR;
|
|
|
1452 }
|
|
|
1453
|
|
|
1454 status->code = status->code * 10 + ch - '0';
|
|
|
1455
|
|
|
1456 if (++status->count == 3) {
|
|
|
1457 state = sw_space_after_status;
|
|
|
1458 status->start = p - 2;
|
|
|
1459 }
|
|
|
1460
|
|
|
1461 break;
|
|
|
1462
|
|
|
1463 /* space or end of line */
|
|
|
1464 case sw_space_after_status:
|
|
|
1465 switch (ch) {
|
|
|
1466 case ' ':
|
|
|
1467 state = sw_status_text;
|
|
|
1468 break;
|
|
|
1469 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1470 state = sw_status_text;
|
|
|
1471 break;
|
|
|
1472 case CR:
|
|
|
1473 state = sw_almost_done;
|
|
|
1474 break;
|
|
|
1475 case LF:
|
|
|
1476 goto done;
|
|
|
1477 default:
|
|
|
1478 return NGX_ERROR;
|
|
|
1479 }
|
|
|
1480 break;
|
|
|
1481
|
|
|
1482 /* any text until end of line */
|
|
|
1483 case sw_status_text:
|
|
|
1484 switch (ch) {
|
|
|
1485 case CR:
|
|
|
1486 state = sw_almost_done;
|
|
|
1487
|
|
|
1488 break;
|
|
|
1489 case LF:
|
|
|
1490 goto done;
|
|
|
1491 }
|
|
|
1492 break;
|
|
|
1493
|
|
|
1494 /* end of status line */
|
|
|
1495 case sw_almost_done:
|
|
|
1496 status->end = p - 1;
|
|
|
1497 switch (ch) {
|
|
|
1498 case LF:
|
|
|
1499 goto done;
|
|
|
1500 default:
|
|
|
1501 return NGX_ERROR;
|
|
|
1502 }
|
|
|
1503 }
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 b->pos = p;
|
|
|
1507 r->state = state;
|
|
|
1508
|
|
|
1509 return NGX_AGAIN;
|
|
|
1510
|
|
|
1511 done:
|
|
|
1512
|
|
|
1513 b->pos = p + 1;
|
|
|
1514
|
|
|
1515 if (status->end == NULL) {
|
|
|
1516 status->end = p;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 r->state = sw_start;
|
|
|
1520
|
|
|
1521 return NGX_OK;
|
|
|
1522 }
|
|
|
1523
|
|
|
1524
|
|
|
1525 ngx_int_t
|
|
122
|
1526 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1527 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1528 {
|
|
|
1529 u_char ch, *p;
|
|
|
1530 size_t len;
|
|
|
1531
|
|
|
1532 len = uri->len;
|
|
|
1533 p = uri->data;
|
|
|
1534
|
|
|
1535 if (len == 0 || p[0] == '?') {
|
|
|
1536 goto unsafe;
|
|
|
1537 }
|
|
|
1538
|
|
482
|
1539 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1540 goto unsafe;
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 for ( /* void */ ; len; len--) {
|
|
|
1544
|
|
|
1545 ch = *p++;
|
|
|
1546
|
|
254
|
1547 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1548 continue;
|
|
|
1549 }
|
|
|
1550
|
|
122
|
1551 if (ch == '?') {
|
|
|
1552 args->len = len - 1;
|
|
|
1553 args->data = p;
|
|
|
1554 uri->len -= len;
|
|
|
1555
|
|
|
1556 return NGX_OK;
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 if (ch == '\0') {
|
|
572
|
1560 goto unsafe;
|
|
122
|
1561 }
|
|
|
1562
|
|
482
|
1563 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1564
|
|
122
|
1565 /* detect "/../" */
|
|
|
1566
|
|
482
|
1567 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1568 goto unsafe;
|
|
|
1569 }
|
|
|
1570 }
|
|
|
1571 }
|
|
|
1572
|
|
|
1573 return NGX_OK;
|
|
|
1574
|
|
|
1575 unsafe:
|
|
|
1576
|
|
530
|
1577 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1578 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1579 "unsafe URI \"%V\" was detected", uri);
|
|
|
1580 }
|
|
122
|
1581
|
|
|
1582 return NGX_ERROR;
|
|
|
1583 }
|
|
|
1584
|
|
|
1585
|
|
|
1586 ngx_int_t
|
|
58
|
1587 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1588 ngx_str_t *value)
|
|
|
1589 {
|
|
|
1590 ngx_uint_t i;
|
|
|
1591 u_char *start, *last, *end, ch;
|
|
|
1592 ngx_table_elt_t **h;
|
|
|
1593
|
|
|
1594 h = headers->elts;
|
|
|
1595
|
|
|
1596 for (i = 0; i < headers->nelts; i++) {
|
|
|
1597
|
|
|
1598 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1599 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1600
|
|
|
1601 if (name->len > h[i]->value.len) {
|
|
|
1602 continue;
|
|
|
1603 }
|
|
126
|
1604
|
|
58
|
1605 start = h[i]->value.data;
|
|
|
1606 end = h[i]->value.data + h[i]->value.len;
|
|
|
1607
|
|
|
1608 while (start < end) {
|
|
|
1609
|
|
|
1610 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1611 goto skip;
|
|
|
1612 }
|
|
|
1613
|
|
|
1614 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1615 /* void */
|
|
|
1616 }
|
|
|
1617
|
|
|
1618 if (value == NULL) {
|
|
|
1619 if (start == end || *start == ',') {
|
|
|
1620 return i;
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 goto skip;
|
|
|
1624 }
|
|
|
1625
|
|
|
1626 if (start == end || *start++ != '=') {
|
|
|
1627 /* the invalid header value */
|
|
|
1628 goto skip;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 while (start < end && *start == ' ') { start++; }
|
|
|
1632
|
|
|
1633 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1634 /* void */
|
|
|
1635 }
|
|
|
1636
|
|
|
1637 value->len = last - start;
|
|
|
1638 value->data = start;
|
|
|
1639
|
|
|
1640 return i;
|
|
|
1641
|
|
|
1642 skip:
|
|
122
|
1643
|
|
58
|
1644 while (start < end) {
|
|
|
1645 ch = *start++;
|
|
|
1646 if (ch == ';' || ch == ',') {
|
|
|
1647 break;
|
|
|
1648 }
|
|
|
1649 }
|
|
|
1650
|
|
|
1651 while (start < end && *start == ' ') { start++; }
|
|
|
1652 }
|
|
|
1653 }
|
|
|
1654
|
|
|
1655 return NGX_DECLINED;
|
|
|
1656 }
|
|
432
|
1657
|
|
|
1658
|
|
|
1659 ngx_int_t
|
|
|
1660 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1661 {
|
|
472
|
1662 u_char *p, *last;
|
|
432
|
1663
|
|
|
1664 if (r->args.len == 0) {
|
|
|
1665 return NGX_DECLINED;
|
|
|
1666 }
|
|
|
1667
|
|
472
|
1668 p = r->args.data;
|
|
|
1669 last = p + r->args.len;
|
|
432
|
1670
|
|
472
|
1671 for ( /* void */ ; p < last; p++) {
|
|
432
|
1672
|
|
472
|
1673 /* we need '=' after name, so drop one char from last */
|
|
|
1674
|
|
|
1675 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1676
|
|
|
1677 if (p == NULL) {
|
|
|
1678 return NGX_DECLINED;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1682
|
|
|
1683 value->data = p + len + 1;
|
|
|
1684
|
|
472
|
1685 p = ngx_strlchr(p, last, '&');
|
|
432
|
1686
|
|
|
1687 if (p == NULL) {
|
|
|
1688 p = r->args.data + r->args.len;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691 value->len = p - value->data;
|
|
|
1692
|
|
|
1693 return NGX_OK;
|
|
|
1694 }
|
|
|
1695 }
|
|
|
1696
|
|
|
1697 return NGX_DECLINED;
|
|
|
1698 }
|
|
464
|
1699
|
|
|
1700
|
|
|
1701 void
|
|
|
1702 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1703 {
|
|
572
|
1704 u_char *p, *last;
|
|
464
|
1705
|
|
572
|
1706 last = uri->data + uri->len;
|
|
470
|
1707
|
|
572
|
1708 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1709
|
|
572
|
1710 if (p) {
|
|
|
1711 uri->len = p - uri->data;
|
|
|
1712 p++;
|
|
|
1713 args->len = last - p;
|
|
|
1714 args->data = p;
|
|
464
|
1715
|
|
572
|
1716 } else {
|
|
|
1717 args->len = 0;
|
|
464
|
1718 }
|
|
|
1719 }
|
