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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
|
|
60
|
817 r->invalid_header = 1;
|
|
|
818
|
|
52
|
819 break;
|
|
0
|
820
|
|
|
821 }
|
|
|
822 break;
|
|
|
823
|
|
|
824 /* header name */
|
|
|
825 case sw_name:
|
|
198
|
826 c = lowcase[ch];
|
|
|
827
|
|
|
828 if (c) {
|
|
|
829 hash = ngx_hash(hash, c);
|
|
|
830 r->lowcase_header[i++] = c;
|
|
370
|
831 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
832 break;
|
|
|
833 }
|
|
|
834
|
|
412
|
835 if (ch == '_') {
|
|
|
836 if (allow_underscores) {
|
|
|
837 hash = ngx_hash(hash, ch);
|
|
|
838 r->lowcase_header[i++] = ch;
|
|
|
839 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
840
|
|
|
841 } else {
|
|
|
842 r->invalid_header = 1;
|
|
|
843 }
|
|
|
844
|
|
|
845 break;
|
|
|
846 }
|
|
|
847
|
|
0
|
848 if (ch == ':') {
|
|
28
|
849 r->header_name_end = p;
|
|
0
|
850 state = sw_space_before_value;
|
|
|
851 break;
|
|
|
852 }
|
|
|
853
|
|
58
|
854 if (ch == CR) {
|
|
|
855 r->header_name_end = p;
|
|
|
856 r->header_start = p;
|
|
|
857 r->header_end = p;
|
|
|
858 state = sw_almost_done;
|
|
|
859 break;
|
|
|
860 }
|
|
|
861
|
|
|
862 if (ch == LF) {
|
|
|
863 r->header_name_end = p;
|
|
|
864 r->header_start = p;
|
|
|
865 r->header_end = p;
|
|
|
866 goto done;
|
|
|
867 }
|
|
|
868
|
|
2
|
869 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
870 if (ch == '/'
|
|
58
|
871 && r->upstream
|
|
|
872 && p - r->header_name_start == 4
|
|
|
873 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
874 {
|
|
|
875 state = sw_ignore_line;
|
|
|
876 break;
|
|
|
877 }
|
|
|
878
|
|
60
|
879 r->invalid_header = 1;
|
|
|
880
|
|
52
|
881 break;
|
|
0
|
882
|
|
|
883 /* space* before header value */
|
|
|
884 case sw_space_before_value:
|
|
|
885 switch (ch) {
|
|
|
886 case ' ':
|
|
|
887 break;
|
|
|
888 case CR:
|
|
58
|
889 r->header_start = p;
|
|
|
890 r->header_end = p;
|
|
0
|
891 state = sw_almost_done;
|
|
|
892 break;
|
|
|
893 case LF:
|
|
58
|
894 r->header_start = p;
|
|
|
895 r->header_end = p;
|
|
28
|
896 goto done;
|
|
0
|
897 default:
|
|
28
|
898 r->header_start = p;
|
|
0
|
899 state = sw_value;
|
|
|
900 break;
|
|
|
901 }
|
|
|
902 break;
|
|
|
903
|
|
|
904 /* header value */
|
|
|
905 case sw_value:
|
|
|
906 switch (ch) {
|
|
|
907 case ' ':
|
|
28
|
908 r->header_end = p;
|
|
0
|
909 state = sw_space_after_value;
|
|
|
910 break;
|
|
|
911 case CR:
|
|
28
|
912 r->header_end = p;
|
|
0
|
913 state = sw_almost_done;
|
|
|
914 break;
|
|
|
915 case LF:
|
|
28
|
916 r->header_end = p;
|
|
|
917 goto done;
|
|
0
|
918 }
|
|
|
919 break;
|
|
|
920
|
|
|
921 /* space* before end of header line */
|
|
|
922 case sw_space_after_value:
|
|
|
923 switch (ch) {
|
|
|
924 case ' ':
|
|
|
925 break;
|
|
|
926 case CR:
|
|
|
927 state = sw_almost_done;
|
|
|
928 break;
|
|
|
929 case LF:
|
|
28
|
930 goto done;
|
|
0
|
931 default:
|
|
|
932 state = sw_value;
|
|
|
933 break;
|
|
|
934 }
|
|
|
935 break;
|
|
|
936
|
|
|
937 /* ignore header line */
|
|
|
938 case sw_ignore_line:
|
|
|
939 switch (ch) {
|
|
|
940 case LF:
|
|
|
941 state = sw_start;
|
|
|
942 break;
|
|
|
943 default:
|
|
|
944 break;
|
|
|
945 }
|
|
|
946 break;
|
|
|
947
|
|
|
948 /* end of header line */
|
|
|
949 case sw_almost_done:
|
|
|
950 switch (ch) {
|
|
370
|
951 case LF:
|
|
|
952 goto done;
|
|
172
|
953 case CR:
|
|
|
954 break;
|
|
0
|
955 default:
|
|
|
956 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
957 }
|
|
174
|
958 break;
|
|
0
|
959
|
|
|
960 /* end of header */
|
|
|
961 case sw_header_almost_done:
|
|
|
962 switch (ch) {
|
|
|
963 case LF:
|
|
28
|
964 goto header_done;
|
|
0
|
965 default:
|
|
|
966 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
967 }
|
|
|
968 }
|
|
|
969 }
|
|
|
970
|
|
|
971 b->pos = p;
|
|
28
|
972 r->state = state;
|
|
56
|
973 r->header_hash = hash;
|
|
198
|
974 r->lowcase_index = i;
|
|
0
|
975
|
|
28
|
976 return NGX_AGAIN;
|
|
|
977
|
|
|
978 done:
|
|
|
979
|
|
|
980 b->pos = p + 1;
|
|
|
981 r->state = sw_start;
|
|
56
|
982 r->header_hash = hash;
|
|
198
|
983 r->lowcase_index = i;
|
|
0
|
984
|
|
28
|
985 return NGX_OK;
|
|
|
986
|
|
|
987 header_done:
|
|
0
|
988
|
|
28
|
989 b->pos = p + 1;
|
|
|
990 r->state = sw_start;
|
|
|
991
|
|
|
992 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
993 }
|
|
|
994
|
|
|
995
|
|
58
|
996 ngx_int_t
|
|
342
|
997 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
998 {
|
|
|
999 u_char c, ch, decoded, *p, *u;
|
|
|
1000 enum {
|
|
|
1001 sw_usual = 0,
|
|
|
1002 sw_slash,
|
|
|
1003 sw_dot,
|
|
|
1004 sw_dot_dot,
|
|
|
1005 sw_quoted,
|
|
|
1006 sw_quoted_second
|
|
|
1007 } state, quoted_state;
|
|
|
1008
|
|
28
|
1009 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1010 decoded = '\0';
|
|
|
1011 quoted_state = sw_usual;
|
|
28
|
1012 #endif
|
|
0
|
1013
|
|
|
1014 state = sw_usual;
|
|
|
1015 p = r->uri_start;
|
|
|
1016 u = r->uri.data;
|
|
|
1017 r->uri_ext = NULL;
|
|
10
|
1018 r->args_start = NULL;
|
|
0
|
1019
|
|
|
1020 ch = *p++;
|
|
|
1021
|
|
28
|
1022 while (p <= r->uri_end) {
|
|
10
|
1023
|
|
|
1024 /*
|
|
28
|
1025 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
1026 * because after the URI there is always at least one charcter:
|
|
|
1027 * the line feed
|
|
|
1028 */
|
|
0
|
1029
|
|
|
1030 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1031 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1032
|
|
|
1033 switch (state) {
|
|
122
|
1034
|
|
0
|
1035 case sw_usual:
|
|
254
|
1036
|
|
|
1037 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1038 *u++ = ch;
|
|
|
1039 ch = *p++;
|
|
|
1040 break;
|
|
|
1041 }
|
|
|
1042
|
|
0
|
1043 switch(ch) {
|
|
10
|
1044 #if (NGX_WIN32)
|
|
|
1045 case '\\':
|
|
|
1046 r->uri_ext = NULL;
|
|
|
1047
|
|
|
1048 if (p == r->uri_start + r->uri.len) {
|
|
|
1049
|
|
|
1050 /*
|
|
|
1051 * we omit the last "\" to cause redirect because
|
|
|
1052 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1053 */
|
|
|
1054
|
|
|
1055 break;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 state = sw_slash;
|
|
|
1059 *u++ = '/';
|
|
|
1060 break;
|
|
|
1061 #endif
|
|
0
|
1062 case '/':
|
|
|
1063 r->uri_ext = NULL;
|
|
|
1064 state = sw_slash;
|
|
|
1065 *u++ = ch;
|
|
|
1066 break;
|
|
|
1067 case '%':
|
|
|
1068 quoted_state = state;
|
|
|
1069 state = sw_quoted;
|
|
|
1070 break;
|
|
10
|
1071 case '?':
|
|
|
1072 r->args_start = p;
|
|
254
|
1073 goto args;
|
|
|
1074 case '#':
|
|
28
|
1075 goto done;
|
|
0
|
1076 case '.':
|
|
|
1077 r->uri_ext = u + 1;
|
|
22
|
1078 *u++ = ch;
|
|
|
1079 break;
|
|
206
|
1080 case '+':
|
|
|
1081 r->plus_in_uri = 1;
|
|
0
|
1082 default:
|
|
|
1083 *u++ = ch;
|
|
|
1084 break;
|
|
|
1085 }
|
|
254
|
1086
|
|
0
|
1087 ch = *p++;
|
|
|
1088 break;
|
|
|
1089
|
|
|
1090 case sw_slash:
|
|
254
|
1091
|
|
|
1092 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1093 state = sw_usual;
|
|
|
1094 *u++ = ch;
|
|
|
1095 ch = *p++;
|
|
|
1096 break;
|
|
|
1097 }
|
|
|
1098
|
|
0
|
1099 switch(ch) {
|
|
10
|
1100 #if (NGX_WIN32)
|
|
|
1101 case '\\':
|
|
342
|
1102 break;
|
|
10
|
1103 #endif
|
|
0
|
1104 case '/':
|
|
356
|
1105 if (!merge_slashes) {
|
|
342
|
1106 *u++ = ch;
|
|
|
1107 }
|
|
0
|
1108 break;
|
|
|
1109 case '.':
|
|
|
1110 state = sw_dot;
|
|
|
1111 *u++ = ch;
|
|
|
1112 break;
|
|
|
1113 case '%':
|
|
|
1114 quoted_state = state;
|
|
|
1115 state = sw_quoted;
|
|
|
1116 break;
|
|
28
|
1117 case '?':
|
|
|
1118 r->args_start = p;
|
|
254
|
1119 goto args;
|
|
|
1120 case '#':
|
|
28
|
1121 goto done;
|
|
206
|
1122 case '+':
|
|
|
1123 r->plus_in_uri = 1;
|
|
0
|
1124 default:
|
|
|
1125 state = sw_usual;
|
|
|
1126 *u++ = ch;
|
|
|
1127 break;
|
|
|
1128 }
|
|
254
|
1129
|
|
0
|
1130 ch = *p++;
|
|
|
1131 break;
|
|
|
1132
|
|
|
1133 case sw_dot:
|
|
254
|
1134
|
|
|
1135 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1136 state = sw_usual;
|
|
|
1137 *u++ = ch;
|
|
|
1138 ch = *p++;
|
|
|
1139 break;
|
|
|
1140 }
|
|
|
1141
|
|
0
|
1142 switch(ch) {
|
|
10
|
1143 #if (NGX_WIN32)
|
|
|
1144 case '\\':
|
|
|
1145 #endif
|
|
0
|
1146 case '/':
|
|
|
1147 state = sw_slash;
|
|
|
1148 u--;
|
|
|
1149 break;
|
|
|
1150 case '.':
|
|
|
1151 state = sw_dot_dot;
|
|
|
1152 *u++ = ch;
|
|
|
1153 break;
|
|
|
1154 case '%':
|
|
|
1155 quoted_state = state;
|
|
|
1156 state = sw_quoted;
|
|
|
1157 break;
|
|
28
|
1158 case '?':
|
|
|
1159 r->args_start = p;
|
|
254
|
1160 goto args;
|
|
|
1161 case '#':
|
|
28
|
1162 goto done;
|
|
206
|
1163 case '+':
|
|
|
1164 r->plus_in_uri = 1;
|
|
0
|
1165 default:
|
|
|
1166 state = sw_usual;
|
|
|
1167 *u++ = ch;
|
|
|
1168 break;
|
|
|
1169 }
|
|
254
|
1170
|
|
0
|
1171 ch = *p++;
|
|
|
1172 break;
|
|
|
1173
|
|
|
1174 case sw_dot_dot:
|
|
254
|
1175
|
|
|
1176 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1177 state = sw_usual;
|
|
|
1178 *u++ = ch;
|
|
|
1179 ch = *p++;
|
|
|
1180 break;
|
|
|
1181 }
|
|
|
1182
|
|
0
|
1183 switch(ch) {
|
|
10
|
1184 #if (NGX_WIN32)
|
|
|
1185 case '\\':
|
|
|
1186 #endif
|
|
0
|
1187 case '/':
|
|
|
1188 state = sw_slash;
|
|
526
|
1189 u -= 5;
|
|
|
1190 for ( ;; ) {
|
|
|
1191 if (u < r->uri.data) {
|
|
|
1192 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1193 }
|
|
|
1194 if (*u == '/') {
|
|
|
1195 u++;
|
|
|
1196 break;
|
|
|
1197 }
|
|
0
|
1198 u--;
|
|
|
1199 }
|
|
|
1200 break;
|
|
|
1201 case '%':
|
|
|
1202 quoted_state = state;
|
|
|
1203 state = sw_quoted;
|
|
|
1204 break;
|
|
28
|
1205 case '?':
|
|
|
1206 r->args_start = p;
|
|
254
|
1207 goto args;
|
|
|
1208 case '#':
|
|
28
|
1209 goto done;
|
|
206
|
1210 case '+':
|
|
|
1211 r->plus_in_uri = 1;
|
|
0
|
1212 default:
|
|
|
1213 state = sw_usual;
|
|
|
1214 *u++ = ch;
|
|
|
1215 break;
|
|
|
1216 }
|
|
254
|
1217
|
|
0
|
1218 ch = *p++;
|
|
|
1219 break;
|
|
|
1220
|
|
|
1221 case sw_quoted:
|
|
216
|
1222 r->quoted_uri = 1;
|
|
|
1223
|
|
0
|
1224 if (ch >= '0' && ch <= '9') {
|
|
|
1225 decoded = (u_char) (ch - '0');
|
|
|
1226 state = sw_quoted_second;
|
|
|
1227 ch = *p++;
|
|
|
1228 break;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 c = (u_char) (ch | 0x20);
|
|
|
1232 if (c >= 'a' && c <= 'f') {
|
|
|
1233 decoded = (u_char) (c - 'a' + 10);
|
|
|
1234 state = sw_quoted_second;
|
|
|
1235 ch = *p++;
|
|
|
1236 break;
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1240
|
|
|
1241 case sw_quoted_second:
|
|
|
1242 if (ch >= '0' && ch <= '9') {
|
|
|
1243 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1244
|
|
576
|
1245 if (ch == '%' || ch == '#') {
|
|
0
|
1246 state = sw_usual;
|
|
|
1247 *u++ = ch;
|
|
|
1248 ch = *p++;
|
|
|
1249 break;
|
|
254
|
1250
|
|
|
1251 } else if (ch == '\0') {
|
|
572
|
1252 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1253 }
|
|
|
1254
|
|
0
|
1255 state = quoted_state;
|
|
|
1256 break;
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 c = (u_char) (ch | 0x20);
|
|
|
1260 if (c >= 'a' && c <= 'f') {
|
|
|
1261 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1262
|
|
28
|
1263 if (ch == '?') {
|
|
576
|
1264 state = sw_usual;
|
|
0
|
1265 *u++ = ch;
|
|
|
1266 ch = *p++;
|
|
576
|
1267 break;
|
|
206
|
1268
|
|
|
1269 } else if (ch == '+') {
|
|
|
1270 r->plus_in_uri = 1;
|
|
0
|
1271 }
|
|
206
|
1272
|
|
0
|
1273 state = quoted_state;
|
|
|
1274 break;
|
|
|
1275 }
|
|
|
1276
|
|
|
1277 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1278 }
|
|
|
1279 }
|
|
|
1280
|
|
28
|
1281 done:
|
|
|
1282
|
|
0
|
1283 r->uri.len = u - r->uri.data;
|
|
254
|
1284
|
|
|
1285 if (r->uri_ext) {
|
|
|
1286 r->exten.len = u - r->uri_ext;
|
|
|
1287 r->exten.data = r->uri_ext;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290 r->uri_ext = NULL;
|
|
|
1291
|
|
|
1292 return NGX_OK;
|
|
|
1293
|
|
|
1294 args:
|
|
|
1295
|
|
|
1296 while (p < r->uri_end) {
|
|
|
1297 if (*p++ != '#') {
|
|
|
1298 continue;
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 r->args.len = p - 1 - r->args_start;
|
|
|
1302 r->args.data = r->args_start;
|
|
|
1303 r->args_start = NULL;
|
|
|
1304
|
|
|
1305 break;
|
|
|
1306 }
|
|
|
1307
|
|
|
1308 r->uri.len = u - r->uri.data;
|
|
0
|
1309
|
|
|
1310 if (r->uri_ext) {
|
|
|
1311 r->exten.len = u - r->uri_ext;
|
|
10
|
1312 r->exten.data = r->uri_ext;
|
|
0
|
1313 }
|
|
|
1314
|
|
|
1315 r->uri_ext = NULL;
|
|
|
1316
|
|
|
1317 return NGX_OK;
|
|
|
1318 }
|
|
58
|
1319
|
|
|
1320
|
|
|
1321 ngx_int_t
|
|
580
|
1322 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1323 ngx_http_status_t *status)
|
|
|
1324 {
|
|
|
1325 u_char ch;
|
|
|
1326 u_char *p;
|
|
|
1327 enum {
|
|
|
1328 sw_start = 0,
|
|
|
1329 sw_H,
|
|
|
1330 sw_HT,
|
|
|
1331 sw_HTT,
|
|
|
1332 sw_HTTP,
|
|
|
1333 sw_first_major_digit,
|
|
|
1334 sw_major_digit,
|
|
|
1335 sw_first_minor_digit,
|
|
|
1336 sw_minor_digit,
|
|
|
1337 sw_status,
|
|
|
1338 sw_space_after_status,
|
|
|
1339 sw_status_text,
|
|
|
1340 sw_almost_done
|
|
|
1341 } state;
|
|
|
1342
|
|
|
1343 state = r->state;
|
|
|
1344
|
|
|
1345 for (p = b->pos; p < b->last; p++) {
|
|
|
1346 ch = *p;
|
|
|
1347
|
|
|
1348 switch (state) {
|
|
|
1349
|
|
|
1350 /* "HTTP/" */
|
|
|
1351 case sw_start:
|
|
|
1352 switch (ch) {
|
|
|
1353 case 'H':
|
|
|
1354 state = sw_H;
|
|
|
1355 break;
|
|
|
1356 default:
|
|
|
1357 return NGX_ERROR;
|
|
|
1358 }
|
|
|
1359 break;
|
|
|
1360
|
|
|
1361 case sw_H:
|
|
|
1362 switch (ch) {
|
|
|
1363 case 'T':
|
|
|
1364 state = sw_HT;
|
|
|
1365 break;
|
|
|
1366 default:
|
|
|
1367 return NGX_ERROR;
|
|
|
1368 }
|
|
|
1369 break;
|
|
|
1370
|
|
|
1371 case sw_HT:
|
|
|
1372 switch (ch) {
|
|
|
1373 case 'T':
|
|
|
1374 state = sw_HTT;
|
|
|
1375 break;
|
|
|
1376 default:
|
|
|
1377 return NGX_ERROR;
|
|
|
1378 }
|
|
|
1379 break;
|
|
|
1380
|
|
|
1381 case sw_HTT:
|
|
|
1382 switch (ch) {
|
|
|
1383 case 'P':
|
|
|
1384 state = sw_HTTP;
|
|
|
1385 break;
|
|
|
1386 default:
|
|
|
1387 return NGX_ERROR;
|
|
|
1388 }
|
|
|
1389 break;
|
|
|
1390
|
|
|
1391 case sw_HTTP:
|
|
|
1392 switch (ch) {
|
|
|
1393 case '/':
|
|
|
1394 state = sw_first_major_digit;
|
|
|
1395 break;
|
|
|
1396 default:
|
|
|
1397 return NGX_ERROR;
|
|
|
1398 }
|
|
|
1399 break;
|
|
|
1400
|
|
|
1401 /* the first digit of major HTTP version */
|
|
|
1402 case sw_first_major_digit:
|
|
|
1403 if (ch < '1' || ch > '9') {
|
|
|
1404 return NGX_ERROR;
|
|
|
1405 }
|
|
|
1406
|
|
|
1407 state = sw_major_digit;
|
|
|
1408 break;
|
|
|
1409
|
|
|
1410 /* the major HTTP version or dot */
|
|
|
1411 case sw_major_digit:
|
|
|
1412 if (ch == '.') {
|
|
|
1413 state = sw_first_minor_digit;
|
|
|
1414 break;
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 if (ch < '0' || ch > '9') {
|
|
|
1418 return NGX_ERROR;
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 break;
|
|
|
1422
|
|
|
1423 /* the first digit of minor HTTP version */
|
|
|
1424 case sw_first_minor_digit:
|
|
|
1425 if (ch < '0' || ch > '9') {
|
|
|
1426 return NGX_ERROR;
|
|
|
1427 }
|
|
|
1428
|
|
|
1429 state = sw_minor_digit;
|
|
|
1430 break;
|
|
|
1431
|
|
|
1432 /* the minor HTTP version or the end of the request line */
|
|
|
1433 case sw_minor_digit:
|
|
|
1434 if (ch == ' ') {
|
|
|
1435 state = sw_status;
|
|
|
1436 break;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 if (ch < '0' || ch > '9') {
|
|
|
1440 return NGX_ERROR;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 break;
|
|
|
1444
|
|
|
1445 /* HTTP status code */
|
|
|
1446 case sw_status:
|
|
|
1447 if (ch == ' ') {
|
|
|
1448 break;
|
|
|
1449 }
|
|
|
1450
|
|
|
1451 if (ch < '0' || ch > '9') {
|
|
|
1452 return NGX_ERROR;
|
|
|
1453 }
|
|
|
1454
|
|
|
1455 status->code = status->code * 10 + ch - '0';
|
|
|
1456
|
|
|
1457 if (++status->count == 3) {
|
|
|
1458 state = sw_space_after_status;
|
|
|
1459 status->start = p - 2;
|
|
|
1460 }
|
|
|
1461
|
|
|
1462 break;
|
|
|
1463
|
|
|
1464 /* space or end of line */
|
|
|
1465 case sw_space_after_status:
|
|
|
1466 switch (ch) {
|
|
|
1467 case ' ':
|
|
|
1468 state = sw_status_text;
|
|
|
1469 break;
|
|
|
1470 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1471 state = sw_status_text;
|
|
|
1472 break;
|
|
|
1473 case CR:
|
|
|
1474 state = sw_almost_done;
|
|
|
1475 break;
|
|
|
1476 case LF:
|
|
|
1477 goto done;
|
|
|
1478 default:
|
|
|
1479 return NGX_ERROR;
|
|
|
1480 }
|
|
|
1481 break;
|
|
|
1482
|
|
|
1483 /* any text until end of line */
|
|
|
1484 case sw_status_text:
|
|
|
1485 switch (ch) {
|
|
|
1486 case CR:
|
|
|
1487 state = sw_almost_done;
|
|
|
1488
|
|
|
1489 break;
|
|
|
1490 case LF:
|
|
|
1491 goto done;
|
|
|
1492 }
|
|
|
1493 break;
|
|
|
1494
|
|
|
1495 /* end of status line */
|
|
|
1496 case sw_almost_done:
|
|
|
1497 status->end = p - 1;
|
|
|
1498 switch (ch) {
|
|
|
1499 case LF:
|
|
|
1500 goto done;
|
|
|
1501 default:
|
|
|
1502 return NGX_ERROR;
|
|
|
1503 }
|
|
|
1504 }
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 b->pos = p;
|
|
|
1508 r->state = state;
|
|
|
1509
|
|
|
1510 return NGX_AGAIN;
|
|
|
1511
|
|
|
1512 done:
|
|
|
1513
|
|
|
1514 b->pos = p + 1;
|
|
|
1515
|
|
|
1516 if (status->end == NULL) {
|
|
|
1517 status->end = p;
|
|
|
1518 }
|
|
|
1519
|
|
|
1520 r->state = sw_start;
|
|
|
1521
|
|
|
1522 return NGX_OK;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525
|
|
|
1526 ngx_int_t
|
|
122
|
1527 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1528 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1529 {
|
|
|
1530 u_char ch, *p;
|
|
|
1531 size_t len;
|
|
|
1532
|
|
|
1533 len = uri->len;
|
|
|
1534 p = uri->data;
|
|
|
1535
|
|
|
1536 if (len == 0 || p[0] == '?') {
|
|
|
1537 goto unsafe;
|
|
|
1538 }
|
|
|
1539
|
|
482
|
1540 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1541 goto unsafe;
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 for ( /* void */ ; len; len--) {
|
|
|
1545
|
|
|
1546 ch = *p++;
|
|
|
1547
|
|
254
|
1548 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1549 continue;
|
|
|
1550 }
|
|
|
1551
|
|
122
|
1552 if (ch == '?') {
|
|
|
1553 args->len = len - 1;
|
|
|
1554 args->data = p;
|
|
|
1555 uri->len -= len;
|
|
|
1556
|
|
|
1557 return NGX_OK;
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 if (ch == '\0') {
|
|
572
|
1561 goto unsafe;
|
|
122
|
1562 }
|
|
|
1563
|
|
482
|
1564 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1565
|
|
122
|
1566 /* detect "/../" */
|
|
|
1567
|
|
482
|
1568 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1569 goto unsafe;
|
|
|
1570 }
|
|
|
1571 }
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 return NGX_OK;
|
|
|
1575
|
|
|
1576 unsafe:
|
|
|
1577
|
|
530
|
1578 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1579 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1580 "unsafe URI \"%V\" was detected", uri);
|
|
|
1581 }
|
|
122
|
1582
|
|
|
1583 return NGX_ERROR;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586
|
|
|
1587 ngx_int_t
|
|
58
|
1588 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1589 ngx_str_t *value)
|
|
|
1590 {
|
|
|
1591 ngx_uint_t i;
|
|
|
1592 u_char *start, *last, *end, ch;
|
|
|
1593 ngx_table_elt_t **h;
|
|
|
1594
|
|
|
1595 h = headers->elts;
|
|
|
1596
|
|
|
1597 for (i = 0; i < headers->nelts; i++) {
|
|
|
1598
|
|
|
1599 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1600 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1601
|
|
|
1602 if (name->len > h[i]->value.len) {
|
|
|
1603 continue;
|
|
|
1604 }
|
|
126
|
1605
|
|
58
|
1606 start = h[i]->value.data;
|
|
|
1607 end = h[i]->value.data + h[i]->value.len;
|
|
|
1608
|
|
|
1609 while (start < end) {
|
|
|
1610
|
|
|
1611 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1612 goto skip;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1616 /* void */
|
|
|
1617 }
|
|
|
1618
|
|
|
1619 if (value == NULL) {
|
|
|
1620 if (start == end || *start == ',') {
|
|
|
1621 return i;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624 goto skip;
|
|
|
1625 }
|
|
|
1626
|
|
|
1627 if (start == end || *start++ != '=') {
|
|
|
1628 /* the invalid header value */
|
|
|
1629 goto skip;
|
|
|
1630 }
|
|
|
1631
|
|
|
1632 while (start < end && *start == ' ') { start++; }
|
|
|
1633
|
|
|
1634 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1635 /* void */
|
|
|
1636 }
|
|
|
1637
|
|
|
1638 value->len = last - start;
|
|
|
1639 value->data = start;
|
|
|
1640
|
|
|
1641 return i;
|
|
|
1642
|
|
|
1643 skip:
|
|
122
|
1644
|
|
58
|
1645 while (start < end) {
|
|
|
1646 ch = *start++;
|
|
|
1647 if (ch == ';' || ch == ',') {
|
|
|
1648 break;
|
|
|
1649 }
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 while (start < end && *start == ' ') { start++; }
|
|
|
1653 }
|
|
|
1654 }
|
|
|
1655
|
|
|
1656 return NGX_DECLINED;
|
|
|
1657 }
|
|
432
|
1658
|
|
|
1659
|
|
|
1660 ngx_int_t
|
|
|
1661 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1662 {
|
|
472
|
1663 u_char *p, *last;
|
|
432
|
1664
|
|
|
1665 if (r->args.len == 0) {
|
|
|
1666 return NGX_DECLINED;
|
|
|
1667 }
|
|
|
1668
|
|
472
|
1669 p = r->args.data;
|
|
|
1670 last = p + r->args.len;
|
|
432
|
1671
|
|
472
|
1672 for ( /* void */ ; p < last; p++) {
|
|
432
|
1673
|
|
472
|
1674 /* we need '=' after name, so drop one char from last */
|
|
|
1675
|
|
|
1676 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1677
|
|
|
1678 if (p == NULL) {
|
|
|
1679 return NGX_DECLINED;
|
|
|
1680 }
|
|
|
1681
|
|
|
1682 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1683
|
|
|
1684 value->data = p + len + 1;
|
|
|
1685
|
|
472
|
1686 p = ngx_strlchr(p, last, '&');
|
|
432
|
1687
|
|
|
1688 if (p == NULL) {
|
|
|
1689 p = r->args.data + r->args.len;
|
|
|
1690 }
|
|
|
1691
|
|
|
1692 value->len = p - value->data;
|
|
|
1693
|
|
|
1694 return NGX_OK;
|
|
|
1695 }
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 return NGX_DECLINED;
|
|
|
1699 }
|
|
464
|
1700
|
|
|
1701
|
|
|
1702 void
|
|
|
1703 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1704 {
|
|
572
|
1705 u_char *p, *last;
|
|
464
|
1706
|
|
572
|
1707 last = uri->data + uri->len;
|
|
470
|
1708
|
|
572
|
1709 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1710
|
|
572
|
1711 if (p) {
|
|
|
1712 uri->len = p - uri->data;
|
|
|
1713 p++;
|
|
|
1714 args->len = last - p;
|
|
|
1715 args->data = p;
|
|
464
|
1716
|
|
572
|
1717 } else {
|
|
|
1718 args->len = 0;
|
|
464
|
1719 }
|
|
|
1720 }
|
