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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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644
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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254
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13 static uint32_t usual[] = {
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14 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
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15
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16 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
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17 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
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18
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19 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
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20 #if (NGX_WIN32)
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21 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
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22 #else
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23 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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24 #endif
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25
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26 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
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27 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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28
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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 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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33 };
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34
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35
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300
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36 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
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37
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38 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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39 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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40
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41 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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42 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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43
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44 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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45 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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46
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47 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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48 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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49 && m[4] == c4
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50
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51 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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52 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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53 && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
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54
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55 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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56 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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57 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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58
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59 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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60 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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61 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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62
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63 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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64 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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65 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
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66 && m[8] == c8
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67
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68 #else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
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69
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70 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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71 m[0] == c0 && m[1] == c1 && m[2] == c2
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72
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73 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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74 m[0] == c0 && m[2] == c2 && m[3] == c3
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75
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76 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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77 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
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78
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79 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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80 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
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81
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82 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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83 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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84 && m[4] == c4 && m[5] == c5
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85
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86 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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87 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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88 && m[4] == c4 && m[5] == c5 && m[6] == c6
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89
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90 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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91 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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92 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
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93
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94 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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95 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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96 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
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97
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98 #endif
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99
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100
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198
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101 /* gcc, icc, msvc and others compile these switches as an jump table */
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102
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58
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103 ngx_int_t
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104 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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0
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105 {
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56
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106 u_char c, ch, *p, *m;
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0
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107 enum {
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108 sw_start = 0,
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109 sw_method,
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110 sw_spaces_before_uri,
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111 sw_schema,
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112 sw_schema_slash,
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113 sw_schema_slash_slash,
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114 sw_host,
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115 sw_port,
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578
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116 sw_host_http_09,
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0
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117 sw_after_slash_in_uri,
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118 sw_check_uri,
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578
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119 sw_check_uri_http_09,
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0
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120 sw_uri,
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121 sw_http_09,
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122 sw_http_H,
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123 sw_http_HT,
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124 sw_http_HTT,
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125 sw_http_HTTP,
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126 sw_first_major_digit,
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127 sw_major_digit,
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128 sw_first_minor_digit,
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129 sw_minor_digit,
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344
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130 sw_spaces_after_digit,
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28
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131 sw_almost_done
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0
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132 } state;
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133
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134 state = r->state;
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135
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28
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136 for (p = b->pos; p < b->last; p++) {
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137 ch = *p;
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0
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138
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139 switch (state) {
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140
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141 /* HTTP methods: GET, HEAD, POST */
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142 case sw_start:
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28
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143 r->request_start = p;
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0
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144
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145 if (ch == CR || ch == LF) {
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146 break;
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147 }
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148
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506
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149 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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150 return NGX_HTTP_PARSE_INVALID_METHOD;
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151 }
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152
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153 state = sw_method;
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154 break;
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155
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156 case sw_method:
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157 if (ch == ' ') {
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58
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158 r->method_end = p - 1;
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0
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159 m = r->request_start;
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160
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188
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161 switch (p - m) {
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0
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162
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188
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163 case 3:
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300
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164 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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165 r->method = NGX_HTTP_GET;
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256
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166 break;
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167 }
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182
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168
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300
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169 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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170 r->method = NGX_HTTP_PUT;
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256
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171 break;
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0
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172 }
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256
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173
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188
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174 break;
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0
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175
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188
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176 case 4:
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256
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177 if (m[1] == 'O') {
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178
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300
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179 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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180 r->method = NGX_HTTP_POST;
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181 break;
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182 }
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183
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300
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184 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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185 r->method = NGX_HTTP_COPY;
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186 break;
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187 }
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0
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188
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300
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189 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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190 r->method = NGX_HTTP_MOVE;
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191 break;
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192 }
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193
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300
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194 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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195 r->method = NGX_HTTP_LOCK;
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196 break;
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197 }
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198
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199 } else {
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200
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300
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201 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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202 r->method = NGX_HTTP_HEAD;
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203 break;
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204 }
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0
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205 }
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256
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206
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188
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207 break;
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182
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208
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188
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209 case 5:
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300
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210 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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211 r->method = NGX_HTTP_MKCOL;
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212 }
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256
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213
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578
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214 if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) {
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215 r->method = NGX_HTTP_PATCH;
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216 }
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217
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300
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218 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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219 r->method = NGX_HTTP_TRACE;
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220 }
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221
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188
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222 break;
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186
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223
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188
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224 case 6:
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300
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225 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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226 r->method = NGX_HTTP_DELETE;
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256
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227 break;
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182
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228 }
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256
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229
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300
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230 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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231 r->method = NGX_HTTP_UNLOCK;
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232 break;
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233 }
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234
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235 break;
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236
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237 case 7:
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300
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238 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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239 {
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240 r->method = NGX_HTTP_OPTIONS;
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241 }
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242
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243 break;
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244
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245 case 8:
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300
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246 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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247 {
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248 r->method = NGX_HTTP_PROPFIND;
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249 }
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250
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251 break;
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252
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253 case 9:
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300
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254 if (ngx_str9cmp(m,
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255 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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256 {
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257 r->method = NGX_HTTP_PROPPATCH;
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258 }
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259
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188
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260 break;
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0
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261 }
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262
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263 state = sw_spaces_before_uri;
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264 break;
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265 }
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266
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506
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267 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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268 return NGX_HTTP_PARSE_INVALID_METHOD;
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269 }
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270
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271 break;
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272
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273 /* space* before URI */
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274 case sw_spaces_before_uri:
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56
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275
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582
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276 if (ch == '/') {
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254
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277 r->uri_start = p;
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278 state = sw_after_slash_in_uri;
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279 break;
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280 }
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281
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56
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282 c = (u_char) (ch | 0x20);
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70
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283 if (c >= 'a' && c <= 'z') {
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38
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284 r->schema_start = p;
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285 state = sw_schema;
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286 break;
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287 }
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288
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0
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289 switch (ch) {
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290 case ' ':
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291 break;
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292 default:
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293 return NGX_HTTP_PARSE_INVALID_REQUEST;
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294 }
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295 break;
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296
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297 case sw_schema:
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56
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298
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299 c = (u_char) (ch | 0x20);
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70
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300 if (c >= 'a' && c <= 'z') {
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38
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301 break;
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302 }
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303
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0
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304 switch (ch) {
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305 case ':':
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28
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306 r->schema_end = p;
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0
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307 state = sw_schema_slash;
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308 break;
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309 default:
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310 return NGX_HTTP_PARSE_INVALID_REQUEST;
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311 }
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312 break;
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313
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314 case sw_schema_slash:
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315 switch (ch) {
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316 case '/':
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317 state = sw_schema_slash_slash;
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318 break;
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319 default:
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320 return NGX_HTTP_PARSE_INVALID_REQUEST;
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321 }
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322 break;
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323
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324 case sw_schema_slash_slash:
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325 switch (ch) {
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326 case '/':
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258
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327 r->host_start = p + 1;
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0
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328 state = sw_host;
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329 break;
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330 default:
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331 return NGX_HTTP_PARSE_INVALID_REQUEST;
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332 }
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333 break;
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334
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335 case sw_host:
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56
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336
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337 c = (u_char) (ch | 0x20);
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70
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338 if (c >= 'a' && c <= 'z') {
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56
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339 break;
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340 }
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341
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254
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342 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
|
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38
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343 break;
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344 }
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345
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342
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346 r->host_end = p;
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347
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0
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348 switch (ch) {
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349 case ':':
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350 state = sw_port;
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351 break;
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352 case '/':
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28
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353 r->uri_start = p;
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0
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354 state = sw_after_slash_in_uri;
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355 break;
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342
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356 case ' ':
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357 /*
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358 * use single "/" from request line to preserve pointers,
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359 * if request line will be copied to large client buffer
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360 */
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361 r->uri_start = r->schema_end + 1;
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362 r->uri_end = r->schema_end + 2;
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578
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363 state = sw_host_http_09;
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342
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364 break;
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0
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365 default:
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366 return NGX_HTTP_PARSE_INVALID_REQUEST;
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|
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367 }
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368 break;
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369
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370 case sw_port:
|
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38
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371 if (ch >= '0' && ch <= '9') {
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372 break;
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373 }
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374
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0
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375 switch (ch) {
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376 case '/':
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28
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377 r->port_end = p;
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378 r->uri_start = p;
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0
|
379 state = sw_after_slash_in_uri;
|
|
|
380 break;
|
|
342
|
381 case ' ':
|
|
|
382 r->port_end = p;
|
|
|
383 /*
|
|
|
384 * use single "/" from request line to preserve pointers,
|
|
|
385 * if request line will be copied to large client buffer
|
|
|
386 */
|
|
|
387 r->uri_start = r->schema_end + 1;
|
|
|
388 r->uri_end = r->schema_end + 2;
|
|
578
|
389 state = sw_host_http_09;
|
|
342
|
390 break;
|
|
0
|
391 default:
|
|
38
|
392 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
393 }
|
|
|
394 break;
|
|
|
395
|
|
578
|
396 /* space+ after "http://host[:port] " */
|
|
|
397 case sw_host_http_09:
|
|
|
398 switch (ch) {
|
|
|
399 case ' ':
|
|
|
400 break;
|
|
|
401 case CR:
|
|
|
402 r->http_minor = 9;
|
|
|
403 state = sw_almost_done;
|
|
|
404 break;
|
|
|
405 case LF:
|
|
|
406 r->http_minor = 9;
|
|
|
407 goto done;
|
|
|
408 case 'H':
|
|
|
409 r->http_protocol.data = p;
|
|
|
410 state = sw_http_H;
|
|
|
411 break;
|
|
|
412 default:
|
|
|
413 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
414 }
|
|
|
415 break;
|
|
|
416
|
|
|
417
|
|
10
|
418 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
419 case sw_after_slash_in_uri:
|
|
38
|
420
|
|
254
|
421 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
422 state = sw_check_uri;
|
|
|
423 break;
|
|
|
424 }
|
|
|
425
|
|
0
|
426 switch (ch) {
|
|
38
|
427 case ' ':
|
|
|
428 r->uri_end = p;
|
|
578
|
429 state = sw_check_uri_http_09;
|
|
38
|
430 break;
|
|
0
|
431 case CR:
|
|
28
|
432 r->uri_end = p;
|
|
0
|
433 r->http_minor = 9;
|
|
|
434 state = sw_almost_done;
|
|
|
435 break;
|
|
|
436 case LF:
|
|
28
|
437 r->uri_end = p;
|
|
0
|
438 r->http_minor = 9;
|
|
28
|
439 goto done;
|
|
0
|
440 case '.':
|
|
2
|
441 r->complex_uri = 1;
|
|
|
442 state = sw_uri;
|
|
|
443 break;
|
|
0
|
444 case '%':
|
|
2
|
445 r->quoted_uri = 1;
|
|
0
|
446 state = sw_uri;
|
|
|
447 break;
|
|
38
|
448 case '/':
|
|
|
449 r->complex_uri = 1;
|
|
|
450 state = sw_uri;
|
|
|
451 break;
|
|
10
|
452 #if (NGX_WIN32)
|
|
|
453 case '\\':
|
|
|
454 r->complex_uri = 1;
|
|
38
|
455 state = sw_uri;
|
|
10
|
456 break;
|
|
|
457 #endif
|
|
38
|
458 case '?':
|
|
|
459 r->args_start = p + 1;
|
|
|
460 state = sw_uri;
|
|
0
|
461 break;
|
|
254
|
462 case '#':
|
|
|
463 r->complex_uri = 1;
|
|
|
464 state = sw_uri;
|
|
|
465 break;
|
|
34
|
466 case '+':
|
|
|
467 r->plus_in_uri = 1;
|
|
|
468 break;
|
|
38
|
469 case '\0':
|
|
572
|
470 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
471 default:
|
|
|
472 state = sw_check_uri;
|
|
|
473 break;
|
|
|
474 }
|
|
|
475 break;
|
|
|
476
|
|
10
|
477 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
478 case sw_check_uri:
|
|
38
|
479
|
|
254
|
480 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
481 break;
|
|
|
482 }
|
|
|
483
|
|
0
|
484 switch (ch) {
|
|
38
|
485 case '/':
|
|
|
486 r->uri_ext = NULL;
|
|
|
487 state = sw_after_slash_in_uri;
|
|
|
488 break;
|
|
|
489 case '.':
|
|
|
490 r->uri_ext = p + 1;
|
|
|
491 break;
|
|
|
492 case ' ':
|
|
|
493 r->uri_end = p;
|
|
578
|
494 state = sw_check_uri_http_09;
|
|
38
|
495 break;
|
|
0
|
496 case CR:
|
|
28
|
497 r->uri_end = p;
|
|
0
|
498 r->http_minor = 9;
|
|
|
499 state = sw_almost_done;
|
|
|
500 break;
|
|
|
501 case LF:
|
|
28
|
502 r->uri_end = p;
|
|
0
|
503 r->http_minor = 9;
|
|
28
|
504 goto done;
|
|
10
|
505 #if (NGX_WIN32)
|
|
|
506 case '\\':
|
|
|
507 r->complex_uri = 1;
|
|
|
508 state = sw_after_slash_in_uri;
|
|
|
509 break;
|
|
|
510 #endif
|
|
38
|
511 case '%':
|
|
|
512 r->quoted_uri = 1;
|
|
|
513 state = sw_uri;
|
|
0
|
514 break;
|
|
|
515 case '?':
|
|
28
|
516 r->args_start = p + 1;
|
|
0
|
517 state = sw_uri;
|
|
|
518 break;
|
|
254
|
519 case '#':
|
|
|
520 r->complex_uri = 1;
|
|
|
521 state = sw_uri;
|
|
|
522 break;
|
|
206
|
523 case '+':
|
|
|
524 r->plus_in_uri = 1;
|
|
|
525 break;
|
|
38
|
526 case '\0':
|
|
572
|
527 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
528 }
|
|
|
529 break;
|
|
|
530
|
|
578
|
531 /* space+ after URI */
|
|
|
532 case sw_check_uri_http_09:
|
|
|
533 switch (ch) {
|
|
|
534 case ' ':
|
|
|
535 break;
|
|
|
536 case CR:
|
|
|
537 r->http_minor = 9;
|
|
|
538 state = sw_almost_done;
|
|
|
539 break;
|
|
|
540 case LF:
|
|
|
541 r->http_minor = 9;
|
|
|
542 goto done;
|
|
|
543 case 'H':
|
|
|
544 r->http_protocol.data = p;
|
|
|
545 state = sw_http_H;
|
|
|
546 break;
|
|
|
547 default:
|
|
|
548 r->space_in_uri = 1;
|
|
|
549 state = sw_check_uri;
|
|
|
550 break;
|
|
|
551 }
|
|
|
552 break;
|
|
|
553
|
|
|
554
|
|
0
|
555 /* URI */
|
|
|
556 case sw_uri:
|
|
254
|
557
|
|
|
558 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
559 break;
|
|
|
560 }
|
|
|
561
|
|
0
|
562 switch (ch) {
|
|
38
|
563 case ' ':
|
|
|
564 r->uri_end = p;
|
|
|
565 state = sw_http_09;
|
|
|
566 break;
|
|
0
|
567 case CR:
|
|
28
|
568 r->uri_end = p;
|
|
0
|
569 r->http_minor = 9;
|
|
|
570 state = sw_almost_done;
|
|
|
571 break;
|
|
|
572 case LF:
|
|
28
|
573 r->uri_end = p;
|
|
0
|
574 r->http_minor = 9;
|
|
28
|
575 goto done;
|
|
254
|
576 case '#':
|
|
|
577 r->complex_uri = 1;
|
|
|
578 break;
|
|
38
|
579 case '\0':
|
|
572
|
580 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
581 }
|
|
|
582 break;
|
|
|
583
|
|
|
584 /* space+ after URI */
|
|
|
585 case sw_http_09:
|
|
|
586 switch (ch) {
|
|
|
587 case ' ':
|
|
|
588 break;
|
|
|
589 case CR:
|
|
|
590 r->http_minor = 9;
|
|
|
591 state = sw_almost_done;
|
|
|
592 break;
|
|
|
593 case LF:
|
|
|
594 r->http_minor = 9;
|
|
28
|
595 goto done;
|
|
0
|
596 case 'H':
|
|
28
|
597 r->http_protocol.data = p;
|
|
0
|
598 state = sw_http_H;
|
|
|
599 break;
|
|
|
600 default:
|
|
578
|
601 r->space_in_uri = 1;
|
|
|
602 state = sw_uri;
|
|
|
603 break;
|
|
0
|
604 }
|
|
|
605 break;
|
|
|
606
|
|
|
607 case sw_http_H:
|
|
|
608 switch (ch) {
|
|
|
609 case 'T':
|
|
|
610 state = sw_http_HT;
|
|
|
611 break;
|
|
|
612 default:
|
|
|
613 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
614 }
|
|
|
615 break;
|
|
|
616
|
|
|
617 case sw_http_HT:
|
|
|
618 switch (ch) {
|
|
|
619 case 'T':
|
|
|
620 state = sw_http_HTT;
|
|
|
621 break;
|
|
|
622 default:
|
|
|
623 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
624 }
|
|
|
625 break;
|
|
|
626
|
|
|
627 case sw_http_HTT:
|
|
|
628 switch (ch) {
|
|
|
629 case 'P':
|
|
|
630 state = sw_http_HTTP;
|
|
|
631 break;
|
|
|
632 default:
|
|
|
633 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
634 }
|
|
|
635 break;
|
|
|
636
|
|
|
637 case sw_http_HTTP:
|
|
|
638 switch (ch) {
|
|
|
639 case '/':
|
|
|
640 state = sw_first_major_digit;
|
|
|
641 break;
|
|
|
642 default:
|
|
|
643 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
644 }
|
|
|
645 break;
|
|
|
646
|
|
|
647 /* first digit of major HTTP version */
|
|
|
648 case sw_first_major_digit:
|
|
|
649 if (ch < '1' || ch > '9') {
|
|
|
650 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
651 }
|
|
|
652
|
|
|
653 r->http_major = ch - '0';
|
|
|
654 state = sw_major_digit;
|
|
|
655 break;
|
|
|
656
|
|
|
657 /* major HTTP version or dot */
|
|
|
658 case sw_major_digit:
|
|
|
659 if (ch == '.') {
|
|
|
660 state = sw_first_minor_digit;
|
|
|
661 break;
|
|
|
662 }
|
|
|
663
|
|
|
664 if (ch < '0' || ch > '9') {
|
|
|
665 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
666 }
|
|
|
667
|
|
|
668 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
669 break;
|
|
|
670
|
|
|
671 /* first digit of minor HTTP version */
|
|
|
672 case sw_first_minor_digit:
|
|
|
673 if (ch < '0' || ch > '9') {
|
|
|
674 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
675 }
|
|
|
676
|
|
|
677 r->http_minor = ch - '0';
|
|
|
678 state = sw_minor_digit;
|
|
|
679 break;
|
|
|
680
|
|
|
681 /* minor HTTP version or end of request line */
|
|
|
682 case sw_minor_digit:
|
|
|
683 if (ch == CR) {
|
|
|
684 state = sw_almost_done;
|
|
|
685 break;
|
|
|
686 }
|
|
|
687
|
|
|
688 if (ch == LF) {
|
|
28
|
689 goto done;
|
|
0
|
690 }
|
|
|
691
|
|
344
|
692 if (ch == ' ') {
|
|
|
693 state = sw_spaces_after_digit;
|
|
|
694 break;
|
|
|
695 }
|
|
|
696
|
|
0
|
697 if (ch < '0' || ch > '9') {
|
|
|
698 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
699 }
|
|
|
700
|
|
|
701 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
702 break;
|
|
|
703
|
|
344
|
704 case sw_spaces_after_digit:
|
|
|
705 switch (ch) {
|
|
|
706 case ' ':
|
|
|
707 break;
|
|
|
708 case CR:
|
|
|
709 state = sw_almost_done;
|
|
|
710 break;
|
|
|
711 case LF:
|
|
|
712 goto done;
|
|
|
713 default:
|
|
|
714 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
715 }
|
|
|
716 break;
|
|
|
717
|
|
0
|
718 /* end of request line */
|
|
|
719 case sw_almost_done:
|
|
28
|
720 r->request_end = p - 1;
|
|
0
|
721 switch (ch) {
|
|
|
722 case LF:
|
|
28
|
723 goto done;
|
|
0
|
724 default:
|
|
|
725 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
726 }
|
|
|
727 }
|
|
|
728 }
|
|
|
729
|
|
|
730 b->pos = p;
|
|
28
|
731 r->state = state;
|
|
0
|
732
|
|
28
|
733 return NGX_AGAIN;
|
|
0
|
734
|
|
28
|
735 done:
|
|
|
736
|
|
|
737 b->pos = p + 1;
|
|
0
|
738
|
|
28
|
739 if (r->request_end == NULL) {
|
|
|
740 r->request_end = p;
|
|
|
741 }
|
|
0
|
742
|
|
28
|
743 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
744 r->state = sw_start;
|
|
0
|
745
|
|
28
|
746 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
747 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
748 }
|
|
28
|
749
|
|
|
750 return NGX_OK;
|
|
0
|
751 }
|
|
|
752
|
|
|
753
|
|
58
|
754 ngx_int_t
|
|
412
|
755 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
756 ngx_uint_t allow_underscores)
|
|
0
|
757 {
|
|
56
|
758 u_char c, ch, *p;
|
|
198
|
759 ngx_uint_t hash, i;
|
|
0
|
760 enum {
|
|
|
761 sw_start = 0,
|
|
|
762 sw_name,
|
|
|
763 sw_space_before_value,
|
|
|
764 sw_value,
|
|
|
765 sw_space_after_value,
|
|
52
|
766 sw_ignore_line,
|
|
0
|
767 sw_almost_done,
|
|
52
|
768 sw_header_almost_done
|
|
0
|
769 } state;
|
|
|
770
|
|
250
|
771 /* the last '\0' is not needed because string is zero terminated */
|
|
|
772
|
|
198
|
773 static u_char lowcase[] =
|
|
|
774 "\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"
|
|
|
775 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
776 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
777 "\0abcdefghijklmnopqrstuvwxyz\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\0"
|
|
|
781 "\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";
|
|
|
782
|
|
0
|
783 state = r->state;
|
|
56
|
784 hash = r->header_hash;
|
|
198
|
785 i = r->lowcase_index;
|
|
0
|
786
|
|
28
|
787 for (p = b->pos; p < b->last; p++) {
|
|
|
788 ch = *p;
|
|
0
|
789
|
|
|
790 switch (state) {
|
|
|
791
|
|
|
792 /* first char */
|
|
|
793 case sw_start:
|
|
524
|
794 r->header_name_start = p;
|
|
60
|
795 r->invalid_header = 0;
|
|
|
796
|
|
0
|
797 switch (ch) {
|
|
|
798 case CR:
|
|
28
|
799 r->header_end = p;
|
|
0
|
800 state = sw_header_almost_done;
|
|
|
801 break;
|
|
|
802 case LF:
|
|
28
|
803 r->header_end = p;
|
|
|
804 goto header_done;
|
|
0
|
805 default:
|
|
|
806 state = sw_name;
|
|
|
807
|
|
198
|
808 c = lowcase[ch];
|
|
0
|
809
|
|
198
|
810 if (c) {
|
|
|
811 hash = ngx_hash(0, c);
|
|
|
812 r->lowcase_header[0] = c;
|
|
|
813 i = 1;
|
|
0
|
814 break;
|
|
|
815 }
|
|
|
816
|
|
648
|
817 if (ch == '\0') {
|
|
|
818 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
819 }
|
|
|
820
|
|
60
|
821 r->invalid_header = 1;
|
|
|
822
|
|
52
|
823 break;
|
|
0
|
824
|
|
|
825 }
|
|
|
826 break;
|
|
|
827
|
|
|
828 /* header name */
|
|
|
829 case sw_name:
|
|
198
|
830 c = lowcase[ch];
|
|
|
831
|
|
|
832 if (c) {
|
|
|
833 hash = ngx_hash(hash, c);
|
|
|
834 r->lowcase_header[i++] = c;
|
|
370
|
835 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
836 break;
|
|
|
837 }
|
|
|
838
|
|
412
|
839 if (ch == '_') {
|
|
|
840 if (allow_underscores) {
|
|
|
841 hash = ngx_hash(hash, ch);
|
|
|
842 r->lowcase_header[i++] = ch;
|
|
|
843 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
844
|
|
|
845 } else {
|
|
|
846 r->invalid_header = 1;
|
|
|
847 }
|
|
|
848
|
|
|
849 break;
|
|
|
850 }
|
|
|
851
|
|
0
|
852 if (ch == ':') {
|
|
28
|
853 r->header_name_end = p;
|
|
0
|
854 state = sw_space_before_value;
|
|
|
855 break;
|
|
|
856 }
|
|
|
857
|
|
58
|
858 if (ch == CR) {
|
|
|
859 r->header_name_end = p;
|
|
|
860 r->header_start = p;
|
|
|
861 r->header_end = p;
|
|
|
862 state = sw_almost_done;
|
|
|
863 break;
|
|
|
864 }
|
|
|
865
|
|
|
866 if (ch == LF) {
|
|
|
867 r->header_name_end = p;
|
|
|
868 r->header_start = p;
|
|
|
869 r->header_end = p;
|
|
|
870 goto done;
|
|
|
871 }
|
|
|
872
|
|
2
|
873 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
874 if (ch == '/'
|
|
58
|
875 && r->upstream
|
|
|
876 && p - r->header_name_start == 4
|
|
|
877 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
878 {
|
|
|
879 state = sw_ignore_line;
|
|
|
880 break;
|
|
|
881 }
|
|
|
882
|
|
648
|
883 if (ch == '\0') {
|
|
|
884 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
885 }
|
|
|
886
|
|
60
|
887 r->invalid_header = 1;
|
|
|
888
|
|
52
|
889 break;
|
|
0
|
890
|
|
|
891 /* space* before header value */
|
|
|
892 case sw_space_before_value:
|
|
|
893 switch (ch) {
|
|
|
894 case ' ':
|
|
|
895 break;
|
|
|
896 case CR:
|
|
58
|
897 r->header_start = p;
|
|
|
898 r->header_end = p;
|
|
0
|
899 state = sw_almost_done;
|
|
|
900 break;
|
|
|
901 case LF:
|
|
58
|
902 r->header_start = p;
|
|
|
903 r->header_end = p;
|
|
28
|
904 goto done;
|
|
648
|
905 case '\0':
|
|
|
906 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
907 default:
|
|
28
|
908 r->header_start = p;
|
|
0
|
909 state = sw_value;
|
|
|
910 break;
|
|
|
911 }
|
|
|
912 break;
|
|
|
913
|
|
|
914 /* header value */
|
|
|
915 case sw_value:
|
|
|
916 switch (ch) {
|
|
|
917 case ' ':
|
|
28
|
918 r->header_end = p;
|
|
0
|
919 state = sw_space_after_value;
|
|
|
920 break;
|
|
|
921 case CR:
|
|
28
|
922 r->header_end = p;
|
|
0
|
923 state = sw_almost_done;
|
|
|
924 break;
|
|
|
925 case LF:
|
|
28
|
926 r->header_end = p;
|
|
|
927 goto done;
|
|
648
|
928 case '\0':
|
|
|
929 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
930 }
|
|
|
931 break;
|
|
|
932
|
|
|
933 /* space* before end of header line */
|
|
|
934 case sw_space_after_value:
|
|
|
935 switch (ch) {
|
|
|
936 case ' ':
|
|
|
937 break;
|
|
|
938 case CR:
|
|
|
939 state = sw_almost_done;
|
|
|
940 break;
|
|
|
941 case LF:
|
|
28
|
942 goto done;
|
|
648
|
943 case '\0':
|
|
|
944 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
945 default:
|
|
|
946 state = sw_value;
|
|
|
947 break;
|
|
|
948 }
|
|
|
949 break;
|
|
|
950
|
|
|
951 /* ignore header line */
|
|
|
952 case sw_ignore_line:
|
|
|
953 switch (ch) {
|
|
|
954 case LF:
|
|
|
955 state = sw_start;
|
|
|
956 break;
|
|
|
957 default:
|
|
|
958 break;
|
|
|
959 }
|
|
|
960 break;
|
|
|
961
|
|
|
962 /* end of header line */
|
|
|
963 case sw_almost_done:
|
|
|
964 switch (ch) {
|
|
370
|
965 case LF:
|
|
|
966 goto done;
|
|
172
|
967 case CR:
|
|
|
968 break;
|
|
0
|
969 default:
|
|
|
970 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
971 }
|
|
174
|
972 break;
|
|
0
|
973
|
|
|
974 /* end of header */
|
|
|
975 case sw_header_almost_done:
|
|
|
976 switch (ch) {
|
|
|
977 case LF:
|
|
28
|
978 goto header_done;
|
|
0
|
979 default:
|
|
|
980 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
981 }
|
|
|
982 }
|
|
|
983 }
|
|
|
984
|
|
|
985 b->pos = p;
|
|
28
|
986 r->state = state;
|
|
56
|
987 r->header_hash = hash;
|
|
198
|
988 r->lowcase_index = i;
|
|
0
|
989
|
|
28
|
990 return NGX_AGAIN;
|
|
|
991
|
|
|
992 done:
|
|
|
993
|
|
|
994 b->pos = p + 1;
|
|
|
995 r->state = sw_start;
|
|
56
|
996 r->header_hash = hash;
|
|
198
|
997 r->lowcase_index = i;
|
|
0
|
998
|
|
28
|
999 return NGX_OK;
|
|
|
1000
|
|
|
1001 header_done:
|
|
0
|
1002
|
|
28
|
1003 b->pos = p + 1;
|
|
|
1004 r->state = sw_start;
|
|
|
1005
|
|
|
1006 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
1007 }
|
|
|
1008
|
|
|
1009
|
|
58
|
1010 ngx_int_t
|
|
342
|
1011 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
1012 {
|
|
|
1013 u_char c, ch, decoded, *p, *u;
|
|
|
1014 enum {
|
|
|
1015 sw_usual = 0,
|
|
|
1016 sw_slash,
|
|
|
1017 sw_dot,
|
|
|
1018 sw_dot_dot,
|
|
|
1019 sw_quoted,
|
|
|
1020 sw_quoted_second
|
|
|
1021 } state, quoted_state;
|
|
|
1022
|
|
28
|
1023 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1024 decoded = '\0';
|
|
|
1025 quoted_state = sw_usual;
|
|
28
|
1026 #endif
|
|
0
|
1027
|
|
|
1028 state = sw_usual;
|
|
|
1029 p = r->uri_start;
|
|
|
1030 u = r->uri.data;
|
|
|
1031 r->uri_ext = NULL;
|
|
10
|
1032 r->args_start = NULL;
|
|
0
|
1033
|
|
|
1034 ch = *p++;
|
|
|
1035
|
|
28
|
1036 while (p <= r->uri_end) {
|
|
10
|
1037
|
|
|
1038 /*
|
|
28
|
1039 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
1040 * because after the URI there is always at least one charcter:
|
|
|
1041 * the line feed
|
|
|
1042 */
|
|
0
|
1043
|
|
|
1044 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1045 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1046
|
|
|
1047 switch (state) {
|
|
122
|
1048
|
|
0
|
1049 case sw_usual:
|
|
254
|
1050
|
|
|
1051 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1052 *u++ = ch;
|
|
|
1053 ch = *p++;
|
|
|
1054 break;
|
|
|
1055 }
|
|
|
1056
|
|
0
|
1057 switch(ch) {
|
|
10
|
1058 #if (NGX_WIN32)
|
|
|
1059 case '\\':
|
|
|
1060 r->uri_ext = NULL;
|
|
|
1061
|
|
|
1062 if (p == r->uri_start + r->uri.len) {
|
|
|
1063
|
|
|
1064 /*
|
|
|
1065 * we omit the last "\" to cause redirect because
|
|
|
1066 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1067 */
|
|
|
1068
|
|
|
1069 break;
|
|
|
1070 }
|
|
|
1071
|
|
|
1072 state = sw_slash;
|
|
|
1073 *u++ = '/';
|
|
|
1074 break;
|
|
|
1075 #endif
|
|
0
|
1076 case '/':
|
|
|
1077 r->uri_ext = NULL;
|
|
|
1078 state = sw_slash;
|
|
|
1079 *u++ = ch;
|
|
|
1080 break;
|
|
|
1081 case '%':
|
|
|
1082 quoted_state = state;
|
|
|
1083 state = sw_quoted;
|
|
|
1084 break;
|
|
10
|
1085 case '?':
|
|
|
1086 r->args_start = p;
|
|
254
|
1087 goto args;
|
|
|
1088 case '#':
|
|
28
|
1089 goto done;
|
|
0
|
1090 case '.':
|
|
|
1091 r->uri_ext = u + 1;
|
|
22
|
1092 *u++ = ch;
|
|
|
1093 break;
|
|
206
|
1094 case '+':
|
|
|
1095 r->plus_in_uri = 1;
|
|
0
|
1096 default:
|
|
|
1097 *u++ = ch;
|
|
|
1098 break;
|
|
|
1099 }
|
|
254
|
1100
|
|
0
|
1101 ch = *p++;
|
|
|
1102 break;
|
|
|
1103
|
|
|
1104 case sw_slash:
|
|
254
|
1105
|
|
|
1106 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1107 state = sw_usual;
|
|
|
1108 *u++ = ch;
|
|
|
1109 ch = *p++;
|
|
|
1110 break;
|
|
|
1111 }
|
|
|
1112
|
|
0
|
1113 switch(ch) {
|
|
10
|
1114 #if (NGX_WIN32)
|
|
|
1115 case '\\':
|
|
342
|
1116 break;
|
|
10
|
1117 #endif
|
|
0
|
1118 case '/':
|
|
356
|
1119 if (!merge_slashes) {
|
|
342
|
1120 *u++ = ch;
|
|
|
1121 }
|
|
0
|
1122 break;
|
|
|
1123 case '.':
|
|
|
1124 state = sw_dot;
|
|
|
1125 *u++ = ch;
|
|
|
1126 break;
|
|
|
1127 case '%':
|
|
|
1128 quoted_state = state;
|
|
|
1129 state = sw_quoted;
|
|
|
1130 break;
|
|
28
|
1131 case '?':
|
|
|
1132 r->args_start = p;
|
|
254
|
1133 goto args;
|
|
|
1134 case '#':
|
|
28
|
1135 goto done;
|
|
206
|
1136 case '+':
|
|
|
1137 r->plus_in_uri = 1;
|
|
0
|
1138 default:
|
|
|
1139 state = sw_usual;
|
|
|
1140 *u++ = ch;
|
|
|
1141 break;
|
|
|
1142 }
|
|
254
|
1143
|
|
0
|
1144 ch = *p++;
|
|
|
1145 break;
|
|
|
1146
|
|
|
1147 case sw_dot:
|
|
254
|
1148
|
|
|
1149 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1150 state = sw_usual;
|
|
|
1151 *u++ = ch;
|
|
|
1152 ch = *p++;
|
|
|
1153 break;
|
|
|
1154 }
|
|
|
1155
|
|
0
|
1156 switch(ch) {
|
|
10
|
1157 #if (NGX_WIN32)
|
|
|
1158 case '\\':
|
|
|
1159 #endif
|
|
0
|
1160 case '/':
|
|
|
1161 state = sw_slash;
|
|
|
1162 u--;
|
|
|
1163 break;
|
|
|
1164 case '.':
|
|
|
1165 state = sw_dot_dot;
|
|
|
1166 *u++ = ch;
|
|
|
1167 break;
|
|
|
1168 case '%':
|
|
|
1169 quoted_state = state;
|
|
|
1170 state = sw_quoted;
|
|
|
1171 break;
|
|
28
|
1172 case '?':
|
|
|
1173 r->args_start = p;
|
|
254
|
1174 goto args;
|
|
|
1175 case '#':
|
|
28
|
1176 goto done;
|
|
206
|
1177 case '+':
|
|
|
1178 r->plus_in_uri = 1;
|
|
0
|
1179 default:
|
|
|
1180 state = sw_usual;
|
|
|
1181 *u++ = ch;
|
|
|
1182 break;
|
|
|
1183 }
|
|
254
|
1184
|
|
0
|
1185 ch = *p++;
|
|
|
1186 break;
|
|
|
1187
|
|
|
1188 case sw_dot_dot:
|
|
254
|
1189
|
|
|
1190 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1191 state = sw_usual;
|
|
|
1192 *u++ = ch;
|
|
|
1193 ch = *p++;
|
|
|
1194 break;
|
|
|
1195 }
|
|
|
1196
|
|
0
|
1197 switch(ch) {
|
|
10
|
1198 #if (NGX_WIN32)
|
|
|
1199 case '\\':
|
|
|
1200 #endif
|
|
0
|
1201 case '/':
|
|
|
1202 state = sw_slash;
|
|
526
|
1203 u -= 5;
|
|
|
1204 for ( ;; ) {
|
|
|
1205 if (u < r->uri.data) {
|
|
|
1206 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1207 }
|
|
|
1208 if (*u == '/') {
|
|
|
1209 u++;
|
|
|
1210 break;
|
|
|
1211 }
|
|
0
|
1212 u--;
|
|
|
1213 }
|
|
|
1214 break;
|
|
|
1215 case '%':
|
|
|
1216 quoted_state = state;
|
|
|
1217 state = sw_quoted;
|
|
|
1218 break;
|
|
28
|
1219 case '?':
|
|
|
1220 r->args_start = p;
|
|
254
|
1221 goto args;
|
|
|
1222 case '#':
|
|
28
|
1223 goto done;
|
|
206
|
1224 case '+':
|
|
|
1225 r->plus_in_uri = 1;
|
|
0
|
1226 default:
|
|
|
1227 state = sw_usual;
|
|
|
1228 *u++ = ch;
|
|
|
1229 break;
|
|
|
1230 }
|
|
254
|
1231
|
|
0
|
1232 ch = *p++;
|
|
|
1233 break;
|
|
|
1234
|
|
|
1235 case sw_quoted:
|
|
216
|
1236 r->quoted_uri = 1;
|
|
|
1237
|
|
0
|
1238 if (ch >= '0' && ch <= '9') {
|
|
|
1239 decoded = (u_char) (ch - '0');
|
|
|
1240 state = sw_quoted_second;
|
|
|
1241 ch = *p++;
|
|
|
1242 break;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 c = (u_char) (ch | 0x20);
|
|
|
1246 if (c >= 'a' && c <= 'f') {
|
|
|
1247 decoded = (u_char) (c - 'a' + 10);
|
|
|
1248 state = sw_quoted_second;
|
|
|
1249 ch = *p++;
|
|
|
1250 break;
|
|
|
1251 }
|
|
|
1252
|
|
|
1253 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1254
|
|
|
1255 case sw_quoted_second:
|
|
|
1256 if (ch >= '0' && ch <= '9') {
|
|
|
1257 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1258
|
|
576
|
1259 if (ch == '%' || ch == '#') {
|
|
0
|
1260 state = sw_usual;
|
|
|
1261 *u++ = ch;
|
|
|
1262 ch = *p++;
|
|
|
1263 break;
|
|
254
|
1264
|
|
|
1265 } else if (ch == '\0') {
|
|
572
|
1266 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1267 }
|
|
|
1268
|
|
0
|
1269 state = quoted_state;
|
|
|
1270 break;
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 c = (u_char) (ch | 0x20);
|
|
|
1274 if (c >= 'a' && c <= 'f') {
|
|
|
1275 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1276
|
|
28
|
1277 if (ch == '?') {
|
|
576
|
1278 state = sw_usual;
|
|
0
|
1279 *u++ = ch;
|
|
|
1280 ch = *p++;
|
|
576
|
1281 break;
|
|
206
|
1282
|
|
|
1283 } else if (ch == '+') {
|
|
|
1284 r->plus_in_uri = 1;
|
|
0
|
1285 }
|
|
206
|
1286
|
|
0
|
1287 state = quoted_state;
|
|
|
1288 break;
|
|
|
1289 }
|
|
|
1290
|
|
|
1291 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1292 }
|
|
|
1293 }
|
|
|
1294
|
|
28
|
1295 done:
|
|
|
1296
|
|
0
|
1297 r->uri.len = u - r->uri.data;
|
|
254
|
1298
|
|
|
1299 if (r->uri_ext) {
|
|
|
1300 r->exten.len = u - r->uri_ext;
|
|
|
1301 r->exten.data = r->uri_ext;
|
|
|
1302 }
|
|
|
1303
|
|
|
1304 r->uri_ext = NULL;
|
|
|
1305
|
|
|
1306 return NGX_OK;
|
|
|
1307
|
|
|
1308 args:
|
|
|
1309
|
|
|
1310 while (p < r->uri_end) {
|
|
|
1311 if (*p++ != '#') {
|
|
|
1312 continue;
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 r->args.len = p - 1 - r->args_start;
|
|
|
1316 r->args.data = r->args_start;
|
|
|
1317 r->args_start = NULL;
|
|
|
1318
|
|
|
1319 break;
|
|
|
1320 }
|
|
|
1321
|
|
|
1322 r->uri.len = u - r->uri.data;
|
|
0
|
1323
|
|
|
1324 if (r->uri_ext) {
|
|
|
1325 r->exten.len = u - r->uri_ext;
|
|
10
|
1326 r->exten.data = r->uri_ext;
|
|
0
|
1327 }
|
|
|
1328
|
|
|
1329 r->uri_ext = NULL;
|
|
|
1330
|
|
|
1331 return NGX_OK;
|
|
|
1332 }
|
|
58
|
1333
|
|
|
1334
|
|
|
1335 ngx_int_t
|
|
580
|
1336 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1337 ngx_http_status_t *status)
|
|
|
1338 {
|
|
|
1339 u_char ch;
|
|
|
1340 u_char *p;
|
|
|
1341 enum {
|
|
|
1342 sw_start = 0,
|
|
|
1343 sw_H,
|
|
|
1344 sw_HT,
|
|
|
1345 sw_HTT,
|
|
|
1346 sw_HTTP,
|
|
|
1347 sw_first_major_digit,
|
|
|
1348 sw_major_digit,
|
|
|
1349 sw_first_minor_digit,
|
|
|
1350 sw_minor_digit,
|
|
|
1351 sw_status,
|
|
|
1352 sw_space_after_status,
|
|
|
1353 sw_status_text,
|
|
|
1354 sw_almost_done
|
|
|
1355 } state;
|
|
|
1356
|
|
|
1357 state = r->state;
|
|
|
1358
|
|
|
1359 for (p = b->pos; p < b->last; p++) {
|
|
|
1360 ch = *p;
|
|
|
1361
|
|
|
1362 switch (state) {
|
|
|
1363
|
|
|
1364 /* "HTTP/" */
|
|
|
1365 case sw_start:
|
|
|
1366 switch (ch) {
|
|
|
1367 case 'H':
|
|
|
1368 state = sw_H;
|
|
|
1369 break;
|
|
|
1370 default:
|
|
|
1371 return NGX_ERROR;
|
|
|
1372 }
|
|
|
1373 break;
|
|
|
1374
|
|
|
1375 case sw_H:
|
|
|
1376 switch (ch) {
|
|
|
1377 case 'T':
|
|
|
1378 state = sw_HT;
|
|
|
1379 break;
|
|
|
1380 default:
|
|
|
1381 return NGX_ERROR;
|
|
|
1382 }
|
|
|
1383 break;
|
|
|
1384
|
|
|
1385 case sw_HT:
|
|
|
1386 switch (ch) {
|
|
|
1387 case 'T':
|
|
|
1388 state = sw_HTT;
|
|
|
1389 break;
|
|
|
1390 default:
|
|
|
1391 return NGX_ERROR;
|
|
|
1392 }
|
|
|
1393 break;
|
|
|
1394
|
|
|
1395 case sw_HTT:
|
|
|
1396 switch (ch) {
|
|
|
1397 case 'P':
|
|
|
1398 state = sw_HTTP;
|
|
|
1399 break;
|
|
|
1400 default:
|
|
|
1401 return NGX_ERROR;
|
|
|
1402 }
|
|
|
1403 break;
|
|
|
1404
|
|
|
1405 case sw_HTTP:
|
|
|
1406 switch (ch) {
|
|
|
1407 case '/':
|
|
|
1408 state = sw_first_major_digit;
|
|
|
1409 break;
|
|
|
1410 default:
|
|
|
1411 return NGX_ERROR;
|
|
|
1412 }
|
|
|
1413 break;
|
|
|
1414
|
|
|
1415 /* the first digit of major HTTP version */
|
|
|
1416 case sw_first_major_digit:
|
|
|
1417 if (ch < '1' || ch > '9') {
|
|
|
1418 return NGX_ERROR;
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 state = sw_major_digit;
|
|
|
1422 break;
|
|
|
1423
|
|
|
1424 /* the major HTTP version or dot */
|
|
|
1425 case sw_major_digit:
|
|
|
1426 if (ch == '.') {
|
|
|
1427 state = sw_first_minor_digit;
|
|
|
1428 break;
|
|
|
1429 }
|
|
|
1430
|
|
|
1431 if (ch < '0' || ch > '9') {
|
|
|
1432 return NGX_ERROR;
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 break;
|
|
|
1436
|
|
|
1437 /* the first digit of minor HTTP version */
|
|
|
1438 case sw_first_minor_digit:
|
|
|
1439 if (ch < '0' || ch > '9') {
|
|
|
1440 return NGX_ERROR;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 state = sw_minor_digit;
|
|
|
1444 break;
|
|
|
1445
|
|
|
1446 /* the minor HTTP version or the end of the request line */
|
|
|
1447 case sw_minor_digit:
|
|
|
1448 if (ch == ' ') {
|
|
|
1449 state = sw_status;
|
|
|
1450 break;
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 if (ch < '0' || ch > '9') {
|
|
|
1454 return NGX_ERROR;
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 break;
|
|
|
1458
|
|
|
1459 /* HTTP status code */
|
|
|
1460 case sw_status:
|
|
|
1461 if (ch == ' ') {
|
|
|
1462 break;
|
|
|
1463 }
|
|
|
1464
|
|
|
1465 if (ch < '0' || ch > '9') {
|
|
|
1466 return NGX_ERROR;
|
|
|
1467 }
|
|
|
1468
|
|
|
1469 status->code = status->code * 10 + ch - '0';
|
|
|
1470
|
|
|
1471 if (++status->count == 3) {
|
|
|
1472 state = sw_space_after_status;
|
|
|
1473 status->start = p - 2;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 break;
|
|
|
1477
|
|
|
1478 /* space or end of line */
|
|
|
1479 case sw_space_after_status:
|
|
|
1480 switch (ch) {
|
|
|
1481 case ' ':
|
|
|
1482 state = sw_status_text;
|
|
|
1483 break;
|
|
|
1484 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1485 state = sw_status_text;
|
|
|
1486 break;
|
|
|
1487 case CR:
|
|
|
1488 state = sw_almost_done;
|
|
|
1489 break;
|
|
|
1490 case LF:
|
|
|
1491 goto done;
|
|
|
1492 default:
|
|
|
1493 return NGX_ERROR;
|
|
|
1494 }
|
|
|
1495 break;
|
|
|
1496
|
|
|
1497 /* any text until end of line */
|
|
|
1498 case sw_status_text:
|
|
|
1499 switch (ch) {
|
|
|
1500 case CR:
|
|
|
1501 state = sw_almost_done;
|
|
|
1502
|
|
|
1503 break;
|
|
|
1504 case LF:
|
|
|
1505 goto done;
|
|
|
1506 }
|
|
|
1507 break;
|
|
|
1508
|
|
|
1509 /* end of status line */
|
|
|
1510 case sw_almost_done:
|
|
|
1511 status->end = p - 1;
|
|
|
1512 switch (ch) {
|
|
|
1513 case LF:
|
|
|
1514 goto done;
|
|
|
1515 default:
|
|
|
1516 return NGX_ERROR;
|
|
|
1517 }
|
|
|
1518 }
|
|
|
1519 }
|
|
|
1520
|
|
|
1521 b->pos = p;
|
|
|
1522 r->state = state;
|
|
|
1523
|
|
|
1524 return NGX_AGAIN;
|
|
|
1525
|
|
|
1526 done:
|
|
|
1527
|
|
|
1528 b->pos = p + 1;
|
|
|
1529
|
|
|
1530 if (status->end == NULL) {
|
|
|
1531 status->end = p;
|
|
|
1532 }
|
|
|
1533
|
|
|
1534 r->state = sw_start;
|
|
|
1535
|
|
|
1536 return NGX_OK;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539
|
|
|
1540 ngx_int_t
|
|
122
|
1541 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1542 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1543 {
|
|
|
1544 u_char ch, *p;
|
|
|
1545 size_t len;
|
|
|
1546
|
|
|
1547 len = uri->len;
|
|
|
1548 p = uri->data;
|
|
|
1549
|
|
|
1550 if (len == 0 || p[0] == '?') {
|
|
|
1551 goto unsafe;
|
|
|
1552 }
|
|
|
1553
|
|
482
|
1554 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1555 goto unsafe;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 for ( /* void */ ; len; len--) {
|
|
|
1559
|
|
|
1560 ch = *p++;
|
|
|
1561
|
|
254
|
1562 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1563 continue;
|
|
|
1564 }
|
|
|
1565
|
|
122
|
1566 if (ch == '?') {
|
|
|
1567 args->len = len - 1;
|
|
|
1568 args->data = p;
|
|
|
1569 uri->len -= len;
|
|
|
1570
|
|
|
1571 return NGX_OK;
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 if (ch == '\0') {
|
|
572
|
1575 goto unsafe;
|
|
122
|
1576 }
|
|
|
1577
|
|
482
|
1578 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1579
|
|
122
|
1580 /* detect "/../" */
|
|
|
1581
|
|
482
|
1582 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1583 goto unsafe;
|
|
|
1584 }
|
|
|
1585 }
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 return NGX_OK;
|
|
|
1589
|
|
|
1590 unsafe:
|
|
|
1591
|
|
530
|
1592 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1593 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1594 "unsafe URI \"%V\" was detected", uri);
|
|
|
1595 }
|
|
122
|
1596
|
|
|
1597 return NGX_ERROR;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600
|
|
|
1601 ngx_int_t
|
|
58
|
1602 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1603 ngx_str_t *value)
|
|
|
1604 {
|
|
|
1605 ngx_uint_t i;
|
|
|
1606 u_char *start, *last, *end, ch;
|
|
|
1607 ngx_table_elt_t **h;
|
|
|
1608
|
|
|
1609 h = headers->elts;
|
|
|
1610
|
|
|
1611 for (i = 0; i < headers->nelts; i++) {
|
|
|
1612
|
|
|
1613 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1614 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1615
|
|
|
1616 if (name->len > h[i]->value.len) {
|
|
|
1617 continue;
|
|
|
1618 }
|
|
126
|
1619
|
|
58
|
1620 start = h[i]->value.data;
|
|
|
1621 end = h[i]->value.data + h[i]->value.len;
|
|
|
1622
|
|
|
1623 while (start < end) {
|
|
|
1624
|
|
|
1625 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1626 goto skip;
|
|
|
1627 }
|
|
|
1628
|
|
|
1629 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1630 /* void */
|
|
|
1631 }
|
|
|
1632
|
|
|
1633 if (value == NULL) {
|
|
|
1634 if (start == end || *start == ',') {
|
|
|
1635 return i;
|
|
|
1636 }
|
|
|
1637
|
|
|
1638 goto skip;
|
|
|
1639 }
|
|
|
1640
|
|
|
1641 if (start == end || *start++ != '=') {
|
|
|
1642 /* the invalid header value */
|
|
|
1643 goto skip;
|
|
|
1644 }
|
|
|
1645
|
|
|
1646 while (start < end && *start == ' ') { start++; }
|
|
|
1647
|
|
|
1648 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1649 /* void */
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 value->len = last - start;
|
|
|
1653 value->data = start;
|
|
|
1654
|
|
|
1655 return i;
|
|
|
1656
|
|
|
1657 skip:
|
|
122
|
1658
|
|
58
|
1659 while (start < end) {
|
|
|
1660 ch = *start++;
|
|
|
1661 if (ch == ';' || ch == ',') {
|
|
|
1662 break;
|
|
|
1663 }
|
|
|
1664 }
|
|
|
1665
|
|
|
1666 while (start < end && *start == ' ') { start++; }
|
|
|
1667 }
|
|
|
1668 }
|
|
|
1669
|
|
|
1670 return NGX_DECLINED;
|
|
|
1671 }
|
|
432
|
1672
|
|
|
1673
|
|
|
1674 ngx_int_t
|
|
|
1675 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1676 {
|
|
472
|
1677 u_char *p, *last;
|
|
432
|
1678
|
|
|
1679 if (r->args.len == 0) {
|
|
|
1680 return NGX_DECLINED;
|
|
|
1681 }
|
|
|
1682
|
|
472
|
1683 p = r->args.data;
|
|
|
1684 last = p + r->args.len;
|
|
432
|
1685
|
|
472
|
1686 for ( /* void */ ; p < last; p++) {
|
|
432
|
1687
|
|
472
|
1688 /* we need '=' after name, so drop one char from last */
|
|
|
1689
|
|
|
1690 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1691
|
|
|
1692 if (p == NULL) {
|
|
|
1693 return NGX_DECLINED;
|
|
|
1694 }
|
|
|
1695
|
|
|
1696 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1697
|
|
|
1698 value->data = p + len + 1;
|
|
|
1699
|
|
472
|
1700 p = ngx_strlchr(p, last, '&');
|
|
432
|
1701
|
|
|
1702 if (p == NULL) {
|
|
|
1703 p = r->args.data + r->args.len;
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 value->len = p - value->data;
|
|
|
1707
|
|
|
1708 return NGX_OK;
|
|
|
1709 }
|
|
|
1710 }
|
|
|
1711
|
|
|
1712 return NGX_DECLINED;
|
|
|
1713 }
|
|
464
|
1714
|
|
|
1715
|
|
|
1716 void
|
|
|
1717 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1718 {
|
|
572
|
1719 u_char *p, *last;
|
|
464
|
1720
|
|
572
|
1721 last = uri->data + uri->len;
|
|
470
|
1722
|
|
572
|
1723 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1724
|
|
572
|
1725 if (p) {
|
|
|
1726 uri->len = p - uri->data;
|
|
|
1727 p++;
|
|
|
1728 args->len = last - p;
|
|
|
1729 args->data = p;
|
|
464
|
1730
|
|
572
|
1731 } else {
|
|
|
1732 args->len = 0;
|
|
464
|
1733 }
|
|
|
1734 }
|
