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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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650
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113 sw_host_start,
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0
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114 sw_host,
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650
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115 sw_host_end,
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116 sw_host_ip_literal,
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0
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117 sw_port,
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578
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118 sw_host_http_09,
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0
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119 sw_after_slash_in_uri,
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120 sw_check_uri,
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578
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121 sw_check_uri_http_09,
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0
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122 sw_uri,
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123 sw_http_09,
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124 sw_http_H,
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125 sw_http_HT,
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126 sw_http_HTT,
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127 sw_http_HTTP,
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128 sw_first_major_digit,
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129 sw_major_digit,
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130 sw_first_minor_digit,
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131 sw_minor_digit,
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344
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132 sw_spaces_after_digit,
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28
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133 sw_almost_done
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0
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134 } state;
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135
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136 state = r->state;
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137
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28
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138 for (p = b->pos; p < b->last; p++) {
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139 ch = *p;
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0
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140
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141 switch (state) {
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142
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143 /* HTTP methods: GET, HEAD, POST */
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144 case sw_start:
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28
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145 r->request_start = p;
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0
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146
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147 if (ch == CR || ch == LF) {
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148 break;
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149 }
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150
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506
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151 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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152 return NGX_HTTP_PARSE_INVALID_METHOD;
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153 }
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154
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155 state = sw_method;
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156 break;
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157
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158 case sw_method:
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159 if (ch == ' ') {
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58
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160 r->method_end = p - 1;
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0
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161 m = r->request_start;
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162
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188
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163 switch (p - m) {
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0
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164
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188
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165 case 3:
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300
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166 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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167 r->method = NGX_HTTP_GET;
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256
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168 break;
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169 }
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182
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170
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300
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171 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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172 r->method = NGX_HTTP_PUT;
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256
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173 break;
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0
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174 }
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256
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175
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188
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176 break;
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0
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177
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188
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178 case 4:
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256
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179 if (m[1] == 'O') {
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180
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300
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181 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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182 r->method = NGX_HTTP_POST;
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183 break;
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184 }
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185
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300
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186 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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187 r->method = NGX_HTTP_COPY;
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188 break;
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189 }
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0
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190
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300
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191 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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192 r->method = NGX_HTTP_MOVE;
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193 break;
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194 }
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195
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300
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196 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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197 r->method = NGX_HTTP_LOCK;
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198 break;
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199 }
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200
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201 } else {
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202
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300
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203 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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204 r->method = NGX_HTTP_HEAD;
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205 break;
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206 }
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0
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207 }
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256
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208
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188
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209 break;
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182
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210
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188
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211 case 5:
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300
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212 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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213 r->method = NGX_HTTP_MKCOL;
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214 }
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256
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215
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578
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216 if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) {
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217 r->method = NGX_HTTP_PATCH;
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218 }
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219
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300
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220 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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221 r->method = NGX_HTTP_TRACE;
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222 }
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223
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188
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224 break;
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186
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225
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188
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226 case 6:
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300
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227 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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228 r->method = NGX_HTTP_DELETE;
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256
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229 break;
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182
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230 }
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256
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231
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300
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232 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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233 r->method = NGX_HTTP_UNLOCK;
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234 break;
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235 }
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236
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237 break;
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238
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239 case 7:
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300
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240 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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241 {
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242 r->method = NGX_HTTP_OPTIONS;
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243 }
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244
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245 break;
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246
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247 case 8:
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300
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248 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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249 {
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250 r->method = NGX_HTTP_PROPFIND;
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251 }
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252
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253 break;
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254
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255 case 9:
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300
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256 if (ngx_str9cmp(m,
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257 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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258 {
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259 r->method = NGX_HTTP_PROPPATCH;
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260 }
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261
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188
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262 break;
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0
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263 }
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264
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265 state = sw_spaces_before_uri;
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266 break;
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267 }
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268
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506
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269 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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270 return NGX_HTTP_PARSE_INVALID_METHOD;
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271 }
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272
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273 break;
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274
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275 /* space* before URI */
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276 case sw_spaces_before_uri:
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56
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277
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582
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278 if (ch == '/') {
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254
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279 r->uri_start = p;
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280 state = sw_after_slash_in_uri;
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281 break;
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282 }
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283
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56
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284 c = (u_char) (ch | 0x20);
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70
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285 if (c >= 'a' && c <= 'z') {
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38
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286 r->schema_start = p;
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287 state = sw_schema;
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288 break;
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289 }
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290
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0
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291 switch (ch) {
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292 case ' ':
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293 break;
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294 default:
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295 return NGX_HTTP_PARSE_INVALID_REQUEST;
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296 }
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297 break;
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298
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299 case sw_schema:
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56
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300
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301 c = (u_char) (ch | 0x20);
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70
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302 if (c >= 'a' && c <= 'z') {
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38
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303 break;
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304 }
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305
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0
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306 switch (ch) {
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307 case ':':
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28
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308 r->schema_end = p;
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0
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309 state = sw_schema_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:
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317 switch (ch) {
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318 case '/':
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319 state = sw_schema_slash_slash;
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320 break;
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321 default:
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322 return NGX_HTTP_PARSE_INVALID_REQUEST;
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323 }
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324 break;
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325
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326 case sw_schema_slash_slash:
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327 switch (ch) {
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328 case '/':
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650
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329 state = sw_host_start;
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0
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330 break;
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331 default:
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332 return NGX_HTTP_PARSE_INVALID_REQUEST;
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333 }
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334 break;
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335
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650
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336 case sw_host_start:
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337
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338 r->host_start = p;
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339
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340 if (ch == '[') {
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341 state = sw_host_ip_literal;
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342 break;
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343 }
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344
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345 state = sw_host;
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346
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347 /* fall through */
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348
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0
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349 case sw_host:
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56
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350
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351 c = (u_char) (ch | 0x20);
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70
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352 if (c >= 'a' && c <= 'z') {
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56
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353 break;
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354 }
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355
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254
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356 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
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38
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357 break;
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358 }
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359
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650
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360 /* fall through */
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361
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362 case sw_host_end:
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363
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342
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364 r->host_end = p;
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365
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0
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366 switch (ch) {
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367 case ':':
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368 state = sw_port;
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369 break;
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370 case '/':
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28
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371 r->uri_start = p;
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0
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372 state = sw_after_slash_in_uri;
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373 break;
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342
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374 case ' ':
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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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578
|
381 state = sw_host_http_09;
|
|
342
|
382 break;
|
|
0
|
383 default:
|
|
|
384 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
385 }
|
|
|
386 break;
|
|
|
387
|
|
650
|
388 case sw_host_ip_literal:
|
|
|
389
|
|
|
390 if (ch >= '0' && ch <= '9') {
|
|
|
391 break;
|
|
|
392 }
|
|
|
393
|
|
|
394 c = (u_char) (ch | 0x20);
|
|
|
395 if (c >= 'a' && c <= 'z') {
|
|
|
396 break;
|
|
|
397 }
|
|
|
398
|
|
|
399 switch (ch) {
|
|
|
400 case ':':
|
|
|
401 break;
|
|
|
402 case ']':
|
|
|
403 state = sw_host_end;
|
|
|
404 break;
|
|
|
405 case '-':
|
|
|
406 case '.':
|
|
|
407 case '_':
|
|
|
408 case '~':
|
|
|
409 /* unreserved */
|
|
|
410 break;
|
|
|
411 case '!':
|
|
|
412 case '$':
|
|
|
413 case '&':
|
|
|
414 case '\'':
|
|
|
415 case '(':
|
|
|
416 case ')':
|
|
|
417 case '*':
|
|
|
418 case '+':
|
|
|
419 case ',':
|
|
|
420 case ';':
|
|
|
421 case '=':
|
|
|
422 /* sub-delims */
|
|
|
423 break;
|
|
|
424 default:
|
|
|
425 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
426 }
|
|
|
427 break;
|
|
|
428
|
|
0
|
429 case sw_port:
|
|
38
|
430 if (ch >= '0' && ch <= '9') {
|
|
|
431 break;
|
|
|
432 }
|
|
|
433
|
|
0
|
434 switch (ch) {
|
|
|
435 case '/':
|
|
28
|
436 r->port_end = p;
|
|
|
437 r->uri_start = p;
|
|
0
|
438 state = sw_after_slash_in_uri;
|
|
|
439 break;
|
|
342
|
440 case ' ':
|
|
|
441 r->port_end = p;
|
|
|
442 /*
|
|
|
443 * use single "/" from request line to preserve pointers,
|
|
|
444 * if request line will be copied to large client buffer
|
|
|
445 */
|
|
|
446 r->uri_start = r->schema_end + 1;
|
|
|
447 r->uri_end = r->schema_end + 2;
|
|
578
|
448 state = sw_host_http_09;
|
|
342
|
449 break;
|
|
0
|
450 default:
|
|
38
|
451 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
452 }
|
|
|
453 break;
|
|
|
454
|
|
578
|
455 /* space+ after "http://host[:port] " */
|
|
|
456 case sw_host_http_09:
|
|
|
457 switch (ch) {
|
|
|
458 case ' ':
|
|
|
459 break;
|
|
|
460 case CR:
|
|
|
461 r->http_minor = 9;
|
|
|
462 state = sw_almost_done;
|
|
|
463 break;
|
|
|
464 case LF:
|
|
|
465 r->http_minor = 9;
|
|
|
466 goto done;
|
|
|
467 case 'H':
|
|
|
468 r->http_protocol.data = p;
|
|
|
469 state = sw_http_H;
|
|
|
470 break;
|
|
|
471 default:
|
|
|
472 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
473 }
|
|
|
474 break;
|
|
|
475
|
|
|
476
|
|
10
|
477 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
478 case sw_after_slash_in_uri:
|
|
38
|
479
|
|
254
|
480 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
481 state = sw_check_uri;
|
|
|
482 break;
|
|
|
483 }
|
|
|
484
|
|
0
|
485 switch (ch) {
|
|
38
|
486 case ' ':
|
|
|
487 r->uri_end = p;
|
|
578
|
488 state = sw_check_uri_http_09;
|
|
38
|
489 break;
|
|
0
|
490 case CR:
|
|
28
|
491 r->uri_end = p;
|
|
0
|
492 r->http_minor = 9;
|
|
|
493 state = sw_almost_done;
|
|
|
494 break;
|
|
|
495 case LF:
|
|
28
|
496 r->uri_end = p;
|
|
0
|
497 r->http_minor = 9;
|
|
28
|
498 goto done;
|
|
0
|
499 case '.':
|
|
2
|
500 r->complex_uri = 1;
|
|
|
501 state = sw_uri;
|
|
|
502 break;
|
|
0
|
503 case '%':
|
|
2
|
504 r->quoted_uri = 1;
|
|
0
|
505 state = sw_uri;
|
|
|
506 break;
|
|
38
|
507 case '/':
|
|
|
508 r->complex_uri = 1;
|
|
|
509 state = sw_uri;
|
|
|
510 break;
|
|
10
|
511 #if (NGX_WIN32)
|
|
|
512 case '\\':
|
|
|
513 r->complex_uri = 1;
|
|
38
|
514 state = sw_uri;
|
|
10
|
515 break;
|
|
|
516 #endif
|
|
38
|
517 case '?':
|
|
|
518 r->args_start = p + 1;
|
|
|
519 state = sw_uri;
|
|
0
|
520 break;
|
|
254
|
521 case '#':
|
|
|
522 r->complex_uri = 1;
|
|
|
523 state = sw_uri;
|
|
|
524 break;
|
|
34
|
525 case '+':
|
|
|
526 r->plus_in_uri = 1;
|
|
|
527 break;
|
|
38
|
528 case '\0':
|
|
572
|
529 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
530 default:
|
|
|
531 state = sw_check_uri;
|
|
|
532 break;
|
|
|
533 }
|
|
|
534 break;
|
|
|
535
|
|
10
|
536 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
537 case sw_check_uri:
|
|
38
|
538
|
|
254
|
539 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
540 break;
|
|
|
541 }
|
|
|
542
|
|
0
|
543 switch (ch) {
|
|
38
|
544 case '/':
|
|
|
545 r->uri_ext = NULL;
|
|
|
546 state = sw_after_slash_in_uri;
|
|
|
547 break;
|
|
|
548 case '.':
|
|
|
549 r->uri_ext = p + 1;
|
|
|
550 break;
|
|
|
551 case ' ':
|
|
|
552 r->uri_end = p;
|
|
578
|
553 state = sw_check_uri_http_09;
|
|
38
|
554 break;
|
|
0
|
555 case CR:
|
|
28
|
556 r->uri_end = p;
|
|
0
|
557 r->http_minor = 9;
|
|
|
558 state = sw_almost_done;
|
|
|
559 break;
|
|
|
560 case LF:
|
|
28
|
561 r->uri_end = p;
|
|
0
|
562 r->http_minor = 9;
|
|
28
|
563 goto done;
|
|
10
|
564 #if (NGX_WIN32)
|
|
|
565 case '\\':
|
|
|
566 r->complex_uri = 1;
|
|
|
567 state = sw_after_slash_in_uri;
|
|
|
568 break;
|
|
|
569 #endif
|
|
38
|
570 case '%':
|
|
|
571 r->quoted_uri = 1;
|
|
|
572 state = sw_uri;
|
|
0
|
573 break;
|
|
|
574 case '?':
|
|
28
|
575 r->args_start = p + 1;
|
|
0
|
576 state = sw_uri;
|
|
|
577 break;
|
|
254
|
578 case '#':
|
|
|
579 r->complex_uri = 1;
|
|
|
580 state = sw_uri;
|
|
|
581 break;
|
|
206
|
582 case '+':
|
|
|
583 r->plus_in_uri = 1;
|
|
|
584 break;
|
|
38
|
585 case '\0':
|
|
572
|
586 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
587 }
|
|
|
588 break;
|
|
|
589
|
|
578
|
590 /* space+ after URI */
|
|
|
591 case sw_check_uri_http_09:
|
|
|
592 switch (ch) {
|
|
|
593 case ' ':
|
|
|
594 break;
|
|
|
595 case CR:
|
|
|
596 r->http_minor = 9;
|
|
|
597 state = sw_almost_done;
|
|
|
598 break;
|
|
|
599 case LF:
|
|
|
600 r->http_minor = 9;
|
|
|
601 goto done;
|
|
|
602 case 'H':
|
|
|
603 r->http_protocol.data = p;
|
|
|
604 state = sw_http_H;
|
|
|
605 break;
|
|
|
606 default:
|
|
|
607 r->space_in_uri = 1;
|
|
|
608 state = sw_check_uri;
|
|
|
609 break;
|
|
|
610 }
|
|
|
611 break;
|
|
|
612
|
|
|
613
|
|
0
|
614 /* URI */
|
|
|
615 case sw_uri:
|
|
254
|
616
|
|
|
617 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
618 break;
|
|
|
619 }
|
|
|
620
|
|
0
|
621 switch (ch) {
|
|
38
|
622 case ' ':
|
|
|
623 r->uri_end = p;
|
|
|
624 state = sw_http_09;
|
|
|
625 break;
|
|
0
|
626 case CR:
|
|
28
|
627 r->uri_end = p;
|
|
0
|
628 r->http_minor = 9;
|
|
|
629 state = sw_almost_done;
|
|
|
630 break;
|
|
|
631 case LF:
|
|
28
|
632 r->uri_end = p;
|
|
0
|
633 r->http_minor = 9;
|
|
28
|
634 goto done;
|
|
254
|
635 case '#':
|
|
|
636 r->complex_uri = 1;
|
|
|
637 break;
|
|
38
|
638 case '\0':
|
|
572
|
639 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
640 }
|
|
|
641 break;
|
|
|
642
|
|
|
643 /* space+ after URI */
|
|
|
644 case sw_http_09:
|
|
|
645 switch (ch) {
|
|
|
646 case ' ':
|
|
|
647 break;
|
|
|
648 case CR:
|
|
|
649 r->http_minor = 9;
|
|
|
650 state = sw_almost_done;
|
|
|
651 break;
|
|
|
652 case LF:
|
|
|
653 r->http_minor = 9;
|
|
28
|
654 goto done;
|
|
0
|
655 case 'H':
|
|
28
|
656 r->http_protocol.data = p;
|
|
0
|
657 state = sw_http_H;
|
|
|
658 break;
|
|
|
659 default:
|
|
578
|
660 r->space_in_uri = 1;
|
|
|
661 state = sw_uri;
|
|
|
662 break;
|
|
0
|
663 }
|
|
|
664 break;
|
|
|
665
|
|
|
666 case sw_http_H:
|
|
|
667 switch (ch) {
|
|
|
668 case 'T':
|
|
|
669 state = sw_http_HT;
|
|
|
670 break;
|
|
|
671 default:
|
|
|
672 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
673 }
|
|
|
674 break;
|
|
|
675
|
|
|
676 case sw_http_HT:
|
|
|
677 switch (ch) {
|
|
|
678 case 'T':
|
|
|
679 state = sw_http_HTT;
|
|
|
680 break;
|
|
|
681 default:
|
|
|
682 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
683 }
|
|
|
684 break;
|
|
|
685
|
|
|
686 case sw_http_HTT:
|
|
|
687 switch (ch) {
|
|
|
688 case 'P':
|
|
|
689 state = sw_http_HTTP;
|
|
|
690 break;
|
|
|
691 default:
|
|
|
692 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
693 }
|
|
|
694 break;
|
|
|
695
|
|
|
696 case sw_http_HTTP:
|
|
|
697 switch (ch) {
|
|
|
698 case '/':
|
|
|
699 state = sw_first_major_digit;
|
|
|
700 break;
|
|
|
701 default:
|
|
|
702 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
703 }
|
|
|
704 break;
|
|
|
705
|
|
|
706 /* first digit of major HTTP version */
|
|
|
707 case sw_first_major_digit:
|
|
|
708 if (ch < '1' || ch > '9') {
|
|
|
709 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
710 }
|
|
|
711
|
|
|
712 r->http_major = ch - '0';
|
|
|
713 state = sw_major_digit;
|
|
|
714 break;
|
|
|
715
|
|
|
716 /* major HTTP version or dot */
|
|
|
717 case sw_major_digit:
|
|
|
718 if (ch == '.') {
|
|
|
719 state = sw_first_minor_digit;
|
|
|
720 break;
|
|
|
721 }
|
|
|
722
|
|
|
723 if (ch < '0' || ch > '9') {
|
|
|
724 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
725 }
|
|
|
726
|
|
|
727 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
728 break;
|
|
|
729
|
|
|
730 /* first digit of minor HTTP version */
|
|
|
731 case sw_first_minor_digit:
|
|
|
732 if (ch < '0' || ch > '9') {
|
|
|
733 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
734 }
|
|
|
735
|
|
|
736 r->http_minor = ch - '0';
|
|
|
737 state = sw_minor_digit;
|
|
|
738 break;
|
|
|
739
|
|
|
740 /* minor HTTP version or end of request line */
|
|
|
741 case sw_minor_digit:
|
|
|
742 if (ch == CR) {
|
|
|
743 state = sw_almost_done;
|
|
|
744 break;
|
|
|
745 }
|
|
|
746
|
|
|
747 if (ch == LF) {
|
|
28
|
748 goto done;
|
|
0
|
749 }
|
|
|
750
|
|
344
|
751 if (ch == ' ') {
|
|
|
752 state = sw_spaces_after_digit;
|
|
|
753 break;
|
|
|
754 }
|
|
|
755
|
|
0
|
756 if (ch < '0' || ch > '9') {
|
|
|
757 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
758 }
|
|
|
759
|
|
|
760 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
761 break;
|
|
|
762
|
|
344
|
763 case sw_spaces_after_digit:
|
|
|
764 switch (ch) {
|
|
|
765 case ' ':
|
|
|
766 break;
|
|
|
767 case CR:
|
|
|
768 state = sw_almost_done;
|
|
|
769 break;
|
|
|
770 case LF:
|
|
|
771 goto done;
|
|
|
772 default:
|
|
|
773 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
774 }
|
|
|
775 break;
|
|
|
776
|
|
0
|
777 /* end of request line */
|
|
|
778 case sw_almost_done:
|
|
28
|
779 r->request_end = p - 1;
|
|
0
|
780 switch (ch) {
|
|
|
781 case LF:
|
|
28
|
782 goto done;
|
|
0
|
783 default:
|
|
|
784 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
785 }
|
|
|
786 }
|
|
|
787 }
|
|
|
788
|
|
|
789 b->pos = p;
|
|
28
|
790 r->state = state;
|
|
0
|
791
|
|
28
|
792 return NGX_AGAIN;
|
|
0
|
793
|
|
28
|
794 done:
|
|
|
795
|
|
|
796 b->pos = p + 1;
|
|
0
|
797
|
|
28
|
798 if (r->request_end == NULL) {
|
|
|
799 r->request_end = p;
|
|
|
800 }
|
|
0
|
801
|
|
28
|
802 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
803 r->state = sw_start;
|
|
0
|
804
|
|
28
|
805 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
806 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
807 }
|
|
28
|
808
|
|
|
809 return NGX_OK;
|
|
0
|
810 }
|
|
|
811
|
|
|
812
|
|
58
|
813 ngx_int_t
|
|
412
|
814 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
815 ngx_uint_t allow_underscores)
|
|
0
|
816 {
|
|
56
|
817 u_char c, ch, *p;
|
|
198
|
818 ngx_uint_t hash, i;
|
|
0
|
819 enum {
|
|
|
820 sw_start = 0,
|
|
|
821 sw_name,
|
|
|
822 sw_space_before_value,
|
|
|
823 sw_value,
|
|
|
824 sw_space_after_value,
|
|
52
|
825 sw_ignore_line,
|
|
0
|
826 sw_almost_done,
|
|
52
|
827 sw_header_almost_done
|
|
0
|
828 } state;
|
|
|
829
|
|
250
|
830 /* the last '\0' is not needed because string is zero terminated */
|
|
|
831
|
|
198
|
832 static u_char lowcase[] =
|
|
|
833 "\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"
|
|
|
834 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
835 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
836 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
837 "\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"
|
|
|
838 "\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"
|
|
|
839 "\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"
|
|
|
840 "\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";
|
|
|
841
|
|
0
|
842 state = r->state;
|
|
56
|
843 hash = r->header_hash;
|
|
198
|
844 i = r->lowcase_index;
|
|
0
|
845
|
|
28
|
846 for (p = b->pos; p < b->last; p++) {
|
|
|
847 ch = *p;
|
|
0
|
848
|
|
|
849 switch (state) {
|
|
|
850
|
|
|
851 /* first char */
|
|
|
852 case sw_start:
|
|
524
|
853 r->header_name_start = p;
|
|
60
|
854 r->invalid_header = 0;
|
|
|
855
|
|
0
|
856 switch (ch) {
|
|
|
857 case CR:
|
|
28
|
858 r->header_end = p;
|
|
0
|
859 state = sw_header_almost_done;
|
|
|
860 break;
|
|
|
861 case LF:
|
|
28
|
862 r->header_end = p;
|
|
|
863 goto header_done;
|
|
0
|
864 default:
|
|
|
865 state = sw_name;
|
|
|
866
|
|
198
|
867 c = lowcase[ch];
|
|
0
|
868
|
|
198
|
869 if (c) {
|
|
|
870 hash = ngx_hash(0, c);
|
|
|
871 r->lowcase_header[0] = c;
|
|
|
872 i = 1;
|
|
0
|
873 break;
|
|
|
874 }
|
|
|
875
|
|
60
|
876 r->invalid_header = 1;
|
|
|
877
|
|
52
|
878 break;
|
|
0
|
879
|
|
|
880 }
|
|
|
881 break;
|
|
|
882
|
|
|
883 /* header name */
|
|
|
884 case sw_name:
|
|
198
|
885 c = lowcase[ch];
|
|
|
886
|
|
|
887 if (c) {
|
|
|
888 hash = ngx_hash(hash, c);
|
|
|
889 r->lowcase_header[i++] = c;
|
|
370
|
890 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
891 break;
|
|
|
892 }
|
|
|
893
|
|
412
|
894 if (ch == '_') {
|
|
|
895 if (allow_underscores) {
|
|
|
896 hash = ngx_hash(hash, ch);
|
|
|
897 r->lowcase_header[i++] = ch;
|
|
|
898 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
899
|
|
|
900 } else {
|
|
|
901 r->invalid_header = 1;
|
|
|
902 }
|
|
|
903
|
|
|
904 break;
|
|
|
905 }
|
|
|
906
|
|
0
|
907 if (ch == ':') {
|
|
28
|
908 r->header_name_end = p;
|
|
0
|
909 state = sw_space_before_value;
|
|
|
910 break;
|
|
|
911 }
|
|
|
912
|
|
58
|
913 if (ch == CR) {
|
|
|
914 r->header_name_end = p;
|
|
|
915 r->header_start = p;
|
|
|
916 r->header_end = p;
|
|
|
917 state = sw_almost_done;
|
|
|
918 break;
|
|
|
919 }
|
|
|
920
|
|
|
921 if (ch == LF) {
|
|
|
922 r->header_name_end = p;
|
|
|
923 r->header_start = p;
|
|
|
924 r->header_end = p;
|
|
|
925 goto done;
|
|
|
926 }
|
|
|
927
|
|
2
|
928 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
929 if (ch == '/'
|
|
58
|
930 && r->upstream
|
|
|
931 && p - r->header_name_start == 4
|
|
|
932 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
933 {
|
|
|
934 state = sw_ignore_line;
|
|
|
935 break;
|
|
|
936 }
|
|
|
937
|
|
60
|
938 r->invalid_header = 1;
|
|
|
939
|
|
52
|
940 break;
|
|
0
|
941
|
|
|
942 /* space* before header value */
|
|
|
943 case sw_space_before_value:
|
|
|
944 switch (ch) {
|
|
|
945 case ' ':
|
|
|
946 break;
|
|
|
947 case CR:
|
|
58
|
948 r->header_start = p;
|
|
|
949 r->header_end = p;
|
|
0
|
950 state = sw_almost_done;
|
|
|
951 break;
|
|
|
952 case LF:
|
|
58
|
953 r->header_start = p;
|
|
|
954 r->header_end = p;
|
|
28
|
955 goto done;
|
|
0
|
956 default:
|
|
28
|
957 r->header_start = p;
|
|
0
|
958 state = sw_value;
|
|
|
959 break;
|
|
|
960 }
|
|
|
961 break;
|
|
|
962
|
|
|
963 /* header value */
|
|
|
964 case sw_value:
|
|
|
965 switch (ch) {
|
|
|
966 case ' ':
|
|
28
|
967 r->header_end = p;
|
|
0
|
968 state = sw_space_after_value;
|
|
|
969 break;
|
|
|
970 case CR:
|
|
28
|
971 r->header_end = p;
|
|
0
|
972 state = sw_almost_done;
|
|
|
973 break;
|
|
|
974 case LF:
|
|
28
|
975 r->header_end = p;
|
|
|
976 goto done;
|
|
0
|
977 }
|
|
|
978 break;
|
|
|
979
|
|
|
980 /* space* before end of header line */
|
|
|
981 case sw_space_after_value:
|
|
|
982 switch (ch) {
|
|
|
983 case ' ':
|
|
|
984 break;
|
|
|
985 case CR:
|
|
|
986 state = sw_almost_done;
|
|
|
987 break;
|
|
|
988 case LF:
|
|
28
|
989 goto done;
|
|
0
|
990 default:
|
|
|
991 state = sw_value;
|
|
|
992 break;
|
|
|
993 }
|
|
|
994 break;
|
|
|
995
|
|
|
996 /* ignore header line */
|
|
|
997 case sw_ignore_line:
|
|
|
998 switch (ch) {
|
|
|
999 case LF:
|
|
|
1000 state = sw_start;
|
|
|
1001 break;
|
|
|
1002 default:
|
|
|
1003 break;
|
|
|
1004 }
|
|
|
1005 break;
|
|
|
1006
|
|
|
1007 /* end of header line */
|
|
|
1008 case sw_almost_done:
|
|
|
1009 switch (ch) {
|
|
370
|
1010 case LF:
|
|
|
1011 goto done;
|
|
172
|
1012 case CR:
|
|
|
1013 break;
|
|
0
|
1014 default:
|
|
|
1015 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1016 }
|
|
174
|
1017 break;
|
|
0
|
1018
|
|
|
1019 /* end of header */
|
|
|
1020 case sw_header_almost_done:
|
|
|
1021 switch (ch) {
|
|
|
1022 case LF:
|
|
28
|
1023 goto header_done;
|
|
0
|
1024 default:
|
|
|
1025 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 b->pos = p;
|
|
28
|
1031 r->state = state;
|
|
56
|
1032 r->header_hash = hash;
|
|
198
|
1033 r->lowcase_index = i;
|
|
0
|
1034
|
|
28
|
1035 return NGX_AGAIN;
|
|
|
1036
|
|
|
1037 done:
|
|
|
1038
|
|
|
1039 b->pos = p + 1;
|
|
|
1040 r->state = sw_start;
|
|
56
|
1041 r->header_hash = hash;
|
|
198
|
1042 r->lowcase_index = i;
|
|
0
|
1043
|
|
28
|
1044 return NGX_OK;
|
|
|
1045
|
|
|
1046 header_done:
|
|
0
|
1047
|
|
28
|
1048 b->pos = p + 1;
|
|
|
1049 r->state = sw_start;
|
|
|
1050
|
|
|
1051 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
1052 }
|
|
|
1053
|
|
|
1054
|
|
58
|
1055 ngx_int_t
|
|
342
|
1056 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
1057 {
|
|
|
1058 u_char c, ch, decoded, *p, *u;
|
|
|
1059 enum {
|
|
|
1060 sw_usual = 0,
|
|
|
1061 sw_slash,
|
|
|
1062 sw_dot,
|
|
|
1063 sw_dot_dot,
|
|
|
1064 sw_quoted,
|
|
|
1065 sw_quoted_second
|
|
|
1066 } state, quoted_state;
|
|
|
1067
|
|
28
|
1068 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1069 decoded = '\0';
|
|
|
1070 quoted_state = sw_usual;
|
|
28
|
1071 #endif
|
|
0
|
1072
|
|
|
1073 state = sw_usual;
|
|
|
1074 p = r->uri_start;
|
|
|
1075 u = r->uri.data;
|
|
|
1076 r->uri_ext = NULL;
|
|
10
|
1077 r->args_start = NULL;
|
|
0
|
1078
|
|
|
1079 ch = *p++;
|
|
|
1080
|
|
28
|
1081 while (p <= r->uri_end) {
|
|
10
|
1082
|
|
|
1083 /*
|
|
28
|
1084 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
1085 * because after the URI there is always at least one charcter:
|
|
|
1086 * the line feed
|
|
|
1087 */
|
|
0
|
1088
|
|
|
1089 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1090 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1091
|
|
|
1092 switch (state) {
|
|
122
|
1093
|
|
0
|
1094 case sw_usual:
|
|
254
|
1095
|
|
|
1096 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1097 *u++ = ch;
|
|
|
1098 ch = *p++;
|
|
|
1099 break;
|
|
|
1100 }
|
|
|
1101
|
|
0
|
1102 switch(ch) {
|
|
10
|
1103 #if (NGX_WIN32)
|
|
|
1104 case '\\':
|
|
|
1105 r->uri_ext = NULL;
|
|
|
1106
|
|
|
1107 if (p == r->uri_start + r->uri.len) {
|
|
|
1108
|
|
|
1109 /*
|
|
|
1110 * we omit the last "\" to cause redirect because
|
|
|
1111 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1112 */
|
|
|
1113
|
|
|
1114 break;
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 state = sw_slash;
|
|
|
1118 *u++ = '/';
|
|
|
1119 break;
|
|
|
1120 #endif
|
|
0
|
1121 case '/':
|
|
|
1122 r->uri_ext = NULL;
|
|
|
1123 state = sw_slash;
|
|
|
1124 *u++ = ch;
|
|
|
1125 break;
|
|
|
1126 case '%':
|
|
|
1127 quoted_state = state;
|
|
|
1128 state = sw_quoted;
|
|
|
1129 break;
|
|
10
|
1130 case '?':
|
|
|
1131 r->args_start = p;
|
|
254
|
1132 goto args;
|
|
|
1133 case '#':
|
|
28
|
1134 goto done;
|
|
0
|
1135 case '.':
|
|
|
1136 r->uri_ext = u + 1;
|
|
22
|
1137 *u++ = ch;
|
|
|
1138 break;
|
|
206
|
1139 case '+':
|
|
|
1140 r->plus_in_uri = 1;
|
|
0
|
1141 default:
|
|
|
1142 *u++ = ch;
|
|
|
1143 break;
|
|
|
1144 }
|
|
254
|
1145
|
|
0
|
1146 ch = *p++;
|
|
|
1147 break;
|
|
|
1148
|
|
|
1149 case sw_slash:
|
|
254
|
1150
|
|
|
1151 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1152 state = sw_usual;
|
|
|
1153 *u++ = ch;
|
|
|
1154 ch = *p++;
|
|
|
1155 break;
|
|
|
1156 }
|
|
|
1157
|
|
0
|
1158 switch(ch) {
|
|
10
|
1159 #if (NGX_WIN32)
|
|
|
1160 case '\\':
|
|
342
|
1161 break;
|
|
10
|
1162 #endif
|
|
0
|
1163 case '/':
|
|
356
|
1164 if (!merge_slashes) {
|
|
342
|
1165 *u++ = ch;
|
|
|
1166 }
|
|
0
|
1167 break;
|
|
|
1168 case '.':
|
|
|
1169 state = sw_dot;
|
|
|
1170 *u++ = ch;
|
|
|
1171 break;
|
|
|
1172 case '%':
|
|
|
1173 quoted_state = state;
|
|
|
1174 state = sw_quoted;
|
|
|
1175 break;
|
|
28
|
1176 case '?':
|
|
|
1177 r->args_start = p;
|
|
254
|
1178 goto args;
|
|
|
1179 case '#':
|
|
28
|
1180 goto done;
|
|
206
|
1181 case '+':
|
|
|
1182 r->plus_in_uri = 1;
|
|
0
|
1183 default:
|
|
|
1184 state = sw_usual;
|
|
|
1185 *u++ = ch;
|
|
|
1186 break;
|
|
|
1187 }
|
|
254
|
1188
|
|
0
|
1189 ch = *p++;
|
|
|
1190 break;
|
|
|
1191
|
|
|
1192 case sw_dot:
|
|
254
|
1193
|
|
|
1194 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1195 state = sw_usual;
|
|
|
1196 *u++ = ch;
|
|
|
1197 ch = *p++;
|
|
|
1198 break;
|
|
|
1199 }
|
|
|
1200
|
|
0
|
1201 switch(ch) {
|
|
10
|
1202 #if (NGX_WIN32)
|
|
|
1203 case '\\':
|
|
|
1204 #endif
|
|
0
|
1205 case '/':
|
|
|
1206 state = sw_slash;
|
|
|
1207 u--;
|
|
|
1208 break;
|
|
|
1209 case '.':
|
|
|
1210 state = sw_dot_dot;
|
|
|
1211 *u++ = ch;
|
|
|
1212 break;
|
|
|
1213 case '%':
|
|
|
1214 quoted_state = state;
|
|
|
1215 state = sw_quoted;
|
|
|
1216 break;
|
|
28
|
1217 case '?':
|
|
|
1218 r->args_start = p;
|
|
254
|
1219 goto args;
|
|
|
1220 case '#':
|
|
28
|
1221 goto done;
|
|
206
|
1222 case '+':
|
|
|
1223 r->plus_in_uri = 1;
|
|
0
|
1224 default:
|
|
|
1225 state = sw_usual;
|
|
|
1226 *u++ = ch;
|
|
|
1227 break;
|
|
|
1228 }
|
|
254
|
1229
|
|
0
|
1230 ch = *p++;
|
|
|
1231 break;
|
|
|
1232
|
|
|
1233 case sw_dot_dot:
|
|
254
|
1234
|
|
|
1235 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1236 state = sw_usual;
|
|
|
1237 *u++ = ch;
|
|
|
1238 ch = *p++;
|
|
|
1239 break;
|
|
|
1240 }
|
|
|
1241
|
|
0
|
1242 switch(ch) {
|
|
10
|
1243 #if (NGX_WIN32)
|
|
|
1244 case '\\':
|
|
|
1245 #endif
|
|
0
|
1246 case '/':
|
|
|
1247 state = sw_slash;
|
|
526
|
1248 u -= 5;
|
|
|
1249 for ( ;; ) {
|
|
|
1250 if (u < r->uri.data) {
|
|
|
1251 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1252 }
|
|
|
1253 if (*u == '/') {
|
|
|
1254 u++;
|
|
|
1255 break;
|
|
|
1256 }
|
|
0
|
1257 u--;
|
|
|
1258 }
|
|
|
1259 break;
|
|
|
1260 case '%':
|
|
|
1261 quoted_state = state;
|
|
|
1262 state = sw_quoted;
|
|
|
1263 break;
|
|
28
|
1264 case '?':
|
|
|
1265 r->args_start = p;
|
|
254
|
1266 goto args;
|
|
|
1267 case '#':
|
|
28
|
1268 goto done;
|
|
206
|
1269 case '+':
|
|
|
1270 r->plus_in_uri = 1;
|
|
0
|
1271 default:
|
|
|
1272 state = sw_usual;
|
|
|
1273 *u++ = ch;
|
|
|
1274 break;
|
|
|
1275 }
|
|
254
|
1276
|
|
0
|
1277 ch = *p++;
|
|
|
1278 break;
|
|
|
1279
|
|
|
1280 case sw_quoted:
|
|
216
|
1281 r->quoted_uri = 1;
|
|
|
1282
|
|
0
|
1283 if (ch >= '0' && ch <= '9') {
|
|
|
1284 decoded = (u_char) (ch - '0');
|
|
|
1285 state = sw_quoted_second;
|
|
|
1286 ch = *p++;
|
|
|
1287 break;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290 c = (u_char) (ch | 0x20);
|
|
|
1291 if (c >= 'a' && c <= 'f') {
|
|
|
1292 decoded = (u_char) (c - 'a' + 10);
|
|
|
1293 state = sw_quoted_second;
|
|
|
1294 ch = *p++;
|
|
|
1295 break;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1299
|
|
|
1300 case sw_quoted_second:
|
|
|
1301 if (ch >= '0' && ch <= '9') {
|
|
|
1302 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1303
|
|
576
|
1304 if (ch == '%' || ch == '#') {
|
|
0
|
1305 state = sw_usual;
|
|
|
1306 *u++ = ch;
|
|
|
1307 ch = *p++;
|
|
|
1308 break;
|
|
254
|
1309
|
|
|
1310 } else if (ch == '\0') {
|
|
572
|
1311 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1312 }
|
|
|
1313
|
|
0
|
1314 state = quoted_state;
|
|
|
1315 break;
|
|
|
1316 }
|
|
|
1317
|
|
|
1318 c = (u_char) (ch | 0x20);
|
|
|
1319 if (c >= 'a' && c <= 'f') {
|
|
|
1320 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1321
|
|
28
|
1322 if (ch == '?') {
|
|
576
|
1323 state = sw_usual;
|
|
0
|
1324 *u++ = ch;
|
|
|
1325 ch = *p++;
|
|
576
|
1326 break;
|
|
206
|
1327
|
|
|
1328 } else if (ch == '+') {
|
|
|
1329 r->plus_in_uri = 1;
|
|
0
|
1330 }
|
|
206
|
1331
|
|
0
|
1332 state = quoted_state;
|
|
|
1333 break;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1337 }
|
|
|
1338 }
|
|
|
1339
|
|
28
|
1340 done:
|
|
|
1341
|
|
0
|
1342 r->uri.len = u - r->uri.data;
|
|
254
|
1343
|
|
|
1344 if (r->uri_ext) {
|
|
|
1345 r->exten.len = u - r->uri_ext;
|
|
|
1346 r->exten.data = r->uri_ext;
|
|
|
1347 }
|
|
|
1348
|
|
|
1349 r->uri_ext = NULL;
|
|
|
1350
|
|
|
1351 return NGX_OK;
|
|
|
1352
|
|
|
1353 args:
|
|
|
1354
|
|
|
1355 while (p < r->uri_end) {
|
|
|
1356 if (*p++ != '#') {
|
|
|
1357 continue;
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 r->args.len = p - 1 - r->args_start;
|
|
|
1361 r->args.data = r->args_start;
|
|
|
1362 r->args_start = NULL;
|
|
|
1363
|
|
|
1364 break;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 r->uri.len = u - r->uri.data;
|
|
0
|
1368
|
|
|
1369 if (r->uri_ext) {
|
|
|
1370 r->exten.len = u - r->uri_ext;
|
|
10
|
1371 r->exten.data = r->uri_ext;
|
|
0
|
1372 }
|
|
|
1373
|
|
|
1374 r->uri_ext = NULL;
|
|
|
1375
|
|
|
1376 return NGX_OK;
|
|
|
1377 }
|
|
58
|
1378
|
|
|
1379
|
|
|
1380 ngx_int_t
|
|
580
|
1381 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1382 ngx_http_status_t *status)
|
|
|
1383 {
|
|
|
1384 u_char ch;
|
|
|
1385 u_char *p;
|
|
|
1386 enum {
|
|
|
1387 sw_start = 0,
|
|
|
1388 sw_H,
|
|
|
1389 sw_HT,
|
|
|
1390 sw_HTT,
|
|
|
1391 sw_HTTP,
|
|
|
1392 sw_first_major_digit,
|
|
|
1393 sw_major_digit,
|
|
|
1394 sw_first_minor_digit,
|
|
|
1395 sw_minor_digit,
|
|
|
1396 sw_status,
|
|
|
1397 sw_space_after_status,
|
|
|
1398 sw_status_text,
|
|
|
1399 sw_almost_done
|
|
|
1400 } state;
|
|
|
1401
|
|
|
1402 state = r->state;
|
|
|
1403
|
|
|
1404 for (p = b->pos; p < b->last; p++) {
|
|
|
1405 ch = *p;
|
|
|
1406
|
|
|
1407 switch (state) {
|
|
|
1408
|
|
|
1409 /* "HTTP/" */
|
|
|
1410 case sw_start:
|
|
|
1411 switch (ch) {
|
|
|
1412 case 'H':
|
|
|
1413 state = sw_H;
|
|
|
1414 break;
|
|
|
1415 default:
|
|
|
1416 return NGX_ERROR;
|
|
|
1417 }
|
|
|
1418 break;
|
|
|
1419
|
|
|
1420 case sw_H:
|
|
|
1421 switch (ch) {
|
|
|
1422 case 'T':
|
|
|
1423 state = sw_HT;
|
|
|
1424 break;
|
|
|
1425 default:
|
|
|
1426 return NGX_ERROR;
|
|
|
1427 }
|
|
|
1428 break;
|
|
|
1429
|
|
|
1430 case sw_HT:
|
|
|
1431 switch (ch) {
|
|
|
1432 case 'T':
|
|
|
1433 state = sw_HTT;
|
|
|
1434 break;
|
|
|
1435 default:
|
|
|
1436 return NGX_ERROR;
|
|
|
1437 }
|
|
|
1438 break;
|
|
|
1439
|
|
|
1440 case sw_HTT:
|
|
|
1441 switch (ch) {
|
|
|
1442 case 'P':
|
|
|
1443 state = sw_HTTP;
|
|
|
1444 break;
|
|
|
1445 default:
|
|
|
1446 return NGX_ERROR;
|
|
|
1447 }
|
|
|
1448 break;
|
|
|
1449
|
|
|
1450 case sw_HTTP:
|
|
|
1451 switch (ch) {
|
|
|
1452 case '/':
|
|
|
1453 state = sw_first_major_digit;
|
|
|
1454 break;
|
|
|
1455 default:
|
|
|
1456 return NGX_ERROR;
|
|
|
1457 }
|
|
|
1458 break;
|
|
|
1459
|
|
|
1460 /* the first digit of major HTTP version */
|
|
|
1461 case sw_first_major_digit:
|
|
|
1462 if (ch < '1' || ch > '9') {
|
|
|
1463 return NGX_ERROR;
|
|
|
1464 }
|
|
|
1465
|
|
640
|
1466 r->http_major = ch - '0';
|
|
580
|
1467 state = sw_major_digit;
|
|
|
1468 break;
|
|
|
1469
|
|
|
1470 /* the major HTTP version or dot */
|
|
|
1471 case sw_major_digit:
|
|
|
1472 if (ch == '.') {
|
|
|
1473 state = sw_first_minor_digit;
|
|
|
1474 break;
|
|
|
1475 }
|
|
|
1476
|
|
|
1477 if (ch < '0' || ch > '9') {
|
|
|
1478 return NGX_ERROR;
|
|
|
1479 }
|
|
|
1480
|
|
640
|
1481 r->http_major = r->http_major * 10 + ch - '0';
|
|
580
|
1482 break;
|
|
|
1483
|
|
|
1484 /* the first digit of minor HTTP version */
|
|
|
1485 case sw_first_minor_digit:
|
|
|
1486 if (ch < '0' || ch > '9') {
|
|
|
1487 return NGX_ERROR;
|
|
|
1488 }
|
|
|
1489
|
|
640
|
1490 r->http_minor = ch - '0';
|
|
580
|
1491 state = sw_minor_digit;
|
|
|
1492 break;
|
|
|
1493
|
|
|
1494 /* the minor HTTP version or the end of the request line */
|
|
|
1495 case sw_minor_digit:
|
|
|
1496 if (ch == ' ') {
|
|
|
1497 state = sw_status;
|
|
|
1498 break;
|
|
|
1499 }
|
|
|
1500
|
|
|
1501 if (ch < '0' || ch > '9') {
|
|
|
1502 return NGX_ERROR;
|
|
|
1503 }
|
|
|
1504
|
|
640
|
1505 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
580
|
1506 break;
|
|
|
1507
|
|
|
1508 /* HTTP status code */
|
|
|
1509 case sw_status:
|
|
|
1510 if (ch == ' ') {
|
|
|
1511 break;
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 if (ch < '0' || ch > '9') {
|
|
|
1515 return NGX_ERROR;
|
|
|
1516 }
|
|
|
1517
|
|
|
1518 status->code = status->code * 10 + ch - '0';
|
|
|
1519
|
|
|
1520 if (++status->count == 3) {
|
|
|
1521 state = sw_space_after_status;
|
|
|
1522 status->start = p - 2;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 break;
|
|
|
1526
|
|
|
1527 /* space or end of line */
|
|
|
1528 case sw_space_after_status:
|
|
|
1529 switch (ch) {
|
|
|
1530 case ' ':
|
|
|
1531 state = sw_status_text;
|
|
|
1532 break;
|
|
|
1533 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1534 state = sw_status_text;
|
|
|
1535 break;
|
|
|
1536 case CR:
|
|
|
1537 state = sw_almost_done;
|
|
|
1538 break;
|
|
|
1539 case LF:
|
|
|
1540 goto done;
|
|
|
1541 default:
|
|
|
1542 return NGX_ERROR;
|
|
|
1543 }
|
|
|
1544 break;
|
|
|
1545
|
|
|
1546 /* any text until end of line */
|
|
|
1547 case sw_status_text:
|
|
|
1548 switch (ch) {
|
|
|
1549 case CR:
|
|
|
1550 state = sw_almost_done;
|
|
|
1551
|
|
|
1552 break;
|
|
|
1553 case LF:
|
|
|
1554 goto done;
|
|
|
1555 }
|
|
|
1556 break;
|
|
|
1557
|
|
|
1558 /* end of status line */
|
|
|
1559 case sw_almost_done:
|
|
|
1560 status->end = p - 1;
|
|
|
1561 switch (ch) {
|
|
|
1562 case LF:
|
|
|
1563 goto done;
|
|
|
1564 default:
|
|
|
1565 return NGX_ERROR;
|
|
|
1566 }
|
|
|
1567 }
|
|
|
1568 }
|
|
|
1569
|
|
|
1570 b->pos = p;
|
|
|
1571 r->state = state;
|
|
|
1572
|
|
|
1573 return NGX_AGAIN;
|
|
|
1574
|
|
|
1575 done:
|
|
|
1576
|
|
|
1577 b->pos = p + 1;
|
|
|
1578
|
|
|
1579 if (status->end == NULL) {
|
|
|
1580 status->end = p;
|
|
|
1581 }
|
|
|
1582
|
|
640
|
1583 status->http_version = r->http_major * 1000 + r->http_minor;
|
|
580
|
1584 r->state = sw_start;
|
|
|
1585
|
|
|
1586 return NGX_OK;
|
|
|
1587 }
|
|
|
1588
|
|
|
1589
|
|
|
1590 ngx_int_t
|
|
122
|
1591 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1592 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1593 {
|
|
|
1594 u_char ch, *p;
|
|
|
1595 size_t len;
|
|
|
1596
|
|
|
1597 len = uri->len;
|
|
|
1598 p = uri->data;
|
|
|
1599
|
|
|
1600 if (len == 0 || p[0] == '?') {
|
|
|
1601 goto unsafe;
|
|
|
1602 }
|
|
|
1603
|
|
482
|
1604 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1605 goto unsafe;
|
|
|
1606 }
|
|
|
1607
|
|
|
1608 for ( /* void */ ; len; len--) {
|
|
|
1609
|
|
|
1610 ch = *p++;
|
|
|
1611
|
|
254
|
1612 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1613 continue;
|
|
|
1614 }
|
|
|
1615
|
|
122
|
1616 if (ch == '?') {
|
|
|
1617 args->len = len - 1;
|
|
|
1618 args->data = p;
|
|
|
1619 uri->len -= len;
|
|
|
1620
|
|
|
1621 return NGX_OK;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624 if (ch == '\0') {
|
|
572
|
1625 goto unsafe;
|
|
122
|
1626 }
|
|
|
1627
|
|
482
|
1628 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1629
|
|
122
|
1630 /* detect "/../" */
|
|
|
1631
|
|
482
|
1632 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1633 goto unsafe;
|
|
|
1634 }
|
|
|
1635 }
|
|
|
1636 }
|
|
|
1637
|
|
|
1638 return NGX_OK;
|
|
|
1639
|
|
|
1640 unsafe:
|
|
|
1641
|
|
530
|
1642 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1643 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1644 "unsafe URI \"%V\" was detected", uri);
|
|
|
1645 }
|
|
122
|
1646
|
|
|
1647 return NGX_ERROR;
|
|
|
1648 }
|
|
|
1649
|
|
|
1650
|
|
|
1651 ngx_int_t
|
|
58
|
1652 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1653 ngx_str_t *value)
|
|
|
1654 {
|
|
|
1655 ngx_uint_t i;
|
|
|
1656 u_char *start, *last, *end, ch;
|
|
|
1657 ngx_table_elt_t **h;
|
|
|
1658
|
|
|
1659 h = headers->elts;
|
|
|
1660
|
|
|
1661 for (i = 0; i < headers->nelts; i++) {
|
|
|
1662
|
|
|
1663 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1664 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1665
|
|
|
1666 if (name->len > h[i]->value.len) {
|
|
|
1667 continue;
|
|
|
1668 }
|
|
126
|
1669
|
|
58
|
1670 start = h[i]->value.data;
|
|
|
1671 end = h[i]->value.data + h[i]->value.len;
|
|
|
1672
|
|
|
1673 while (start < end) {
|
|
|
1674
|
|
|
1675 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1676 goto skip;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1680 /* void */
|
|
|
1681 }
|
|
|
1682
|
|
|
1683 if (value == NULL) {
|
|
|
1684 if (start == end || *start == ',') {
|
|
|
1685 return i;
|
|
|
1686 }
|
|
|
1687
|
|
|
1688 goto skip;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691 if (start == end || *start++ != '=') {
|
|
|
1692 /* the invalid header value */
|
|
|
1693 goto skip;
|
|
|
1694 }
|
|
|
1695
|
|
|
1696 while (start < end && *start == ' ') { start++; }
|
|
|
1697
|
|
|
1698 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1699 /* void */
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 value->len = last - start;
|
|
|
1703 value->data = start;
|
|
|
1704
|
|
|
1705 return i;
|
|
|
1706
|
|
|
1707 skip:
|
|
122
|
1708
|
|
58
|
1709 while (start < end) {
|
|
|
1710 ch = *start++;
|
|
|
1711 if (ch == ';' || ch == ',') {
|
|
|
1712 break;
|
|
|
1713 }
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 while (start < end && *start == ' ') { start++; }
|
|
|
1717 }
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 return NGX_DECLINED;
|
|
|
1721 }
|
|
432
|
1722
|
|
|
1723
|
|
|
1724 ngx_int_t
|
|
|
1725 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1726 {
|
|
472
|
1727 u_char *p, *last;
|
|
432
|
1728
|
|
|
1729 if (r->args.len == 0) {
|
|
|
1730 return NGX_DECLINED;
|
|
|
1731 }
|
|
|
1732
|
|
472
|
1733 p = r->args.data;
|
|
|
1734 last = p + r->args.len;
|
|
432
|
1735
|
|
472
|
1736 for ( /* void */ ; p < last; p++) {
|
|
432
|
1737
|
|
472
|
1738 /* we need '=' after name, so drop one char from last */
|
|
|
1739
|
|
|
1740 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1741
|
|
|
1742 if (p == NULL) {
|
|
|
1743 return NGX_DECLINED;
|
|
|
1744 }
|
|
|
1745
|
|
|
1746 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1747
|
|
|
1748 value->data = p + len + 1;
|
|
|
1749
|
|
472
|
1750 p = ngx_strlchr(p, last, '&');
|
|
432
|
1751
|
|
|
1752 if (p == NULL) {
|
|
|
1753 p = r->args.data + r->args.len;
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 value->len = p - value->data;
|
|
|
1757
|
|
|
1758 return NGX_OK;
|
|
|
1759 }
|
|
|
1760 }
|
|
|
1761
|
|
|
1762 return NGX_DECLINED;
|
|
|
1763 }
|
|
464
|
1764
|
|
|
1765
|
|
|
1766 void
|
|
|
1767 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1768 {
|
|
572
|
1769 u_char *p, *last;
|
|
464
|
1770
|
|
572
|
1771 last = uri->data + uri->len;
|
|
470
|
1772
|
|
572
|
1773 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1774
|
|
572
|
1775 if (p) {
|
|
|
1776 uri->len = p - uri->data;
|
|
|
1777 p++;
|
|
|
1778 args->len = last - p;
|
|
|
1779 args->data = p;
|
|
464
|
1780
|
|
572
|
1781 } else {
|
|
|
1782 args->len = 0;
|
|
464
|
1783 }
|
|
|
1784 }
|
