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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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254
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12 static uint32_t usual[] = {
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13 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
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14
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15 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
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16 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
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17
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18 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
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19 #if (NGX_WIN32)
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20 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
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21 #else
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22 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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23 #endif
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24
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25 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
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26 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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27
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28 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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29 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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30 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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31 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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32 };
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33
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34
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300
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35 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
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36
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37 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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38 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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39
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40 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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41 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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42
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43 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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44 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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45
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46 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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47 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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48 && m[4] == c4
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49
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50 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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51 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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52 && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
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53
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54 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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55 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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56 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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57
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58 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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59 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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60 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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61
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62 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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63 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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64 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
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65 && m[8] == c8
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66
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67 #else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
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68
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69 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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70 m[0] == c0 && m[1] == c1 && m[2] == c2
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71
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72 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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73 m[0] == c0 && m[2] == c2 && m[3] == c3
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74
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75 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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76 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
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77
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78 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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79 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
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80
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81 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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82 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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83 && m[4] == c4 && m[5] == c5
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84
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85 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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86 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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87 && m[4] == c4 && m[5] == c5 && m[6] == c6
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88
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89 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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90 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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91 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
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92
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93 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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94 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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95 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
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96
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97 #endif
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98
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99
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198
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100 /* gcc, icc, msvc and others compile these switches as an jump table */
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101
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58
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102 ngx_int_t
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103 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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0
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104 {
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56
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105 u_char c, ch, *p, *m;
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0
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106 enum {
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107 sw_start = 0,
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108 sw_method,
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109 sw_spaces_before_uri,
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110 sw_schema,
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111 sw_schema_slash,
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112 sw_schema_slash_slash,
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113 sw_host,
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114 sw_port,
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115 sw_after_slash_in_uri,
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116 sw_check_uri,
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117 sw_uri,
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118 sw_http_09,
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119 sw_http_H,
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120 sw_http_HT,
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121 sw_http_HTT,
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122 sw_http_HTTP,
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123 sw_first_major_digit,
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124 sw_major_digit,
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125 sw_first_minor_digit,
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126 sw_minor_digit,
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344
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127 sw_spaces_after_digit,
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28
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128 sw_almost_done
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0
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129 } state;
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130
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131 state = r->state;
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132
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28
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133 for (p = b->pos; p < b->last; p++) {
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134 ch = *p;
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0
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135
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136 switch (state) {
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137
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138 /* HTTP methods: GET, HEAD, POST */
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139 case sw_start:
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28
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140 r->request_start = p;
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0
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141
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142 if (ch == CR || ch == LF) {
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143 break;
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144 }
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145
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515
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146 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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147 return NGX_HTTP_PARSE_INVALID_METHOD;
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148 }
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149
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150 state = sw_method;
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151 break;
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152
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153 case sw_method:
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154 if (ch == ' ') {
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58
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155 r->method_end = p - 1;
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0
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156 m = r->request_start;
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157
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188
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158 switch (p - m) {
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0
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159
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188
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160 case 3:
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300
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161 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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162 r->method = NGX_HTTP_GET;
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256
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163 break;
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164 }
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182
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165
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300
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166 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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167 r->method = NGX_HTTP_PUT;
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256
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168 break;
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0
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169 }
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256
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170
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188
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171 break;
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0
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172
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188
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173 case 4:
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256
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174 if (m[1] == 'O') {
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175
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300
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176 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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177 r->method = NGX_HTTP_POST;
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178 break;
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179 }
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180
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300
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181 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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182 r->method = NGX_HTTP_COPY;
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183 break;
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184 }
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0
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185
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300
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186 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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187 r->method = NGX_HTTP_MOVE;
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188 break;
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189 }
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190
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300
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191 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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192 r->method = NGX_HTTP_LOCK;
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193 break;
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194 }
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195
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196 } else {
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197
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300
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198 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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199 r->method = NGX_HTTP_HEAD;
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200 break;
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201 }
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0
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202 }
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256
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203
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188
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204 break;
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182
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205
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188
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206 case 5:
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300
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207 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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208 r->method = NGX_HTTP_MKCOL;
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209 }
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256
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210
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300
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211 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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212 r->method = NGX_HTTP_TRACE;
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213 }
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214
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188
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215 break;
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186
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216
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188
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217 case 6:
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300
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218 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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219 r->method = NGX_HTTP_DELETE;
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256
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220 break;
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182
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221 }
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256
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222
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300
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223 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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224 r->method = NGX_HTTP_UNLOCK;
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225 break;
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226 }
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227
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228 break;
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229
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230 case 7:
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300
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231 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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232 {
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233 r->method = NGX_HTTP_OPTIONS;
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234 }
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235
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236 break;
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237
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238 case 8:
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300
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239 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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240 {
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241 r->method = NGX_HTTP_PROPFIND;
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242 }
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243
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244 break;
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245
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246 case 9:
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300
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247 if (ngx_str9cmp(m,
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248 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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249 {
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250 r->method = NGX_HTTP_PROPPATCH;
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251 }
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252
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188
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253 break;
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0
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254 }
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255
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256 state = sw_spaces_before_uri;
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257 break;
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258 }
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259
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515
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260 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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261 return NGX_HTTP_PARSE_INVALID_METHOD;
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262 }
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263
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264 break;
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265
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266 /* space* before URI */
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267 case sw_spaces_before_uri:
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56
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268
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254
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269 if (ch == '/' ){
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270 r->uri_start = p;
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271 state = sw_after_slash_in_uri;
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272 break;
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273 }
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274
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56
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275 c = (u_char) (ch | 0x20);
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70
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276 if (c >= 'a' && c <= 'z') {
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38
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277 r->schema_start = p;
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278 state = sw_schema;
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279 break;
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280 }
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281
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0
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282 switch (ch) {
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283 case ' ':
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284 break;
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285 default:
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286 return NGX_HTTP_PARSE_INVALID_REQUEST;
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287 }
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288 break;
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289
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290 case sw_schema:
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56
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291
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292 c = (u_char) (ch | 0x20);
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70
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293 if (c >= 'a' && c <= 'z') {
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38
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294 break;
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295 }
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296
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0
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297 switch (ch) {
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298 case ':':
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28
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299 r->schema_end = p;
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0
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300 state = sw_schema_slash;
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301 break;
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302 default:
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303 return NGX_HTTP_PARSE_INVALID_REQUEST;
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304 }
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305 break;
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306
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307 case sw_schema_slash:
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308 switch (ch) {
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309 case '/':
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310 state = sw_schema_slash_slash;
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311 break;
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312 default:
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313 return NGX_HTTP_PARSE_INVALID_REQUEST;
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314 }
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315 break;
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316
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317 case sw_schema_slash_slash:
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318 switch (ch) {
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319 case '/':
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258
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320 r->host_start = p + 1;
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0
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321 state = sw_host;
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322 break;
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323 default:
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324 return NGX_HTTP_PARSE_INVALID_REQUEST;
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325 }
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326 break;
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327
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328 case sw_host:
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56
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329
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330 c = (u_char) (ch | 0x20);
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70
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331 if (c >= 'a' && c <= 'z') {
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56
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332 break;
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333 }
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334
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254
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335 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
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38
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336 break;
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337 }
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338
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342
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339 r->host_end = p;
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340
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0
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341 switch (ch) {
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342 case ':':
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343 state = sw_port;
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344 break;
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345 case '/':
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28
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346 r->uri_start = p;
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0
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347 state = sw_after_slash_in_uri;
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348 break;
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342
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349 case ' ':
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350 /*
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351 * use single "/" from request line to preserve pointers,
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352 * if request line will be copied to large client buffer
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353 */
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354 r->uri_start = r->schema_end + 1;
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355 r->uri_end = r->schema_end + 2;
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356 state = sw_http_09;
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357 break;
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0
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358 default:
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359 return NGX_HTTP_PARSE_INVALID_REQUEST;
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360 }
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361 break;
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362
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363 case sw_port:
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38
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364 if (ch >= '0' && ch <= '9') {
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365 break;
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366 }
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367
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0
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368 switch (ch) {
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369 case '/':
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28
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370 r->port_end = p;
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371 r->uri_start = p;
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0
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372 state = sw_after_slash_in_uri;
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373 break;
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342
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374 case ' ':
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375 r->port_end = p;
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376 /*
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377 * use single "/" from request line to preserve pointers,
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378 * if request line will be copied to large client buffer
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379 */
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380 r->uri_start = r->schema_end + 1;
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|
|
381 r->uri_end = r->schema_end + 2;
|
|
|
382 state = sw_http_09;
|
|
|
383 break;
|
|
0
|
384 default:
|
|
38
|
385 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
386 }
|
|
|
387 break;
|
|
|
388
|
|
10
|
389 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
390 case sw_after_slash_in_uri:
|
|
38
|
391
|
|
254
|
392 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
393 state = sw_check_uri;
|
|
|
394 break;
|
|
|
395 }
|
|
|
396
|
|
0
|
397 switch (ch) {
|
|
38
|
398 case ' ':
|
|
|
399 r->uri_end = p;
|
|
|
400 state = sw_http_09;
|
|
|
401 break;
|
|
0
|
402 case CR:
|
|
28
|
403 r->uri_end = p;
|
|
0
|
404 r->http_minor = 9;
|
|
|
405 state = sw_almost_done;
|
|
|
406 break;
|
|
|
407 case LF:
|
|
28
|
408 r->uri_end = p;
|
|
0
|
409 r->http_minor = 9;
|
|
28
|
410 goto done;
|
|
0
|
411 case '.':
|
|
2
|
412 r->complex_uri = 1;
|
|
|
413 state = sw_uri;
|
|
|
414 break;
|
|
0
|
415 case '%':
|
|
2
|
416 r->quoted_uri = 1;
|
|
0
|
417 state = sw_uri;
|
|
|
418 break;
|
|
38
|
419 case '/':
|
|
|
420 r->complex_uri = 1;
|
|
|
421 state = sw_uri;
|
|
|
422 break;
|
|
10
|
423 #if (NGX_WIN32)
|
|
|
424 case '\\':
|
|
|
425 r->complex_uri = 1;
|
|
38
|
426 state = sw_uri;
|
|
10
|
427 break;
|
|
|
428 #endif
|
|
38
|
429 case '?':
|
|
|
430 r->args_start = p + 1;
|
|
|
431 state = sw_uri;
|
|
0
|
432 break;
|
|
254
|
433 case '#':
|
|
|
434 r->complex_uri = 1;
|
|
|
435 state = sw_uri;
|
|
|
436 break;
|
|
34
|
437 case '+':
|
|
|
438 r->plus_in_uri = 1;
|
|
|
439 break;
|
|
38
|
440 case '\0':
|
|
|
441 r->zero_in_uri = 1;
|
|
0
|
442 break;
|
|
|
443 default:
|
|
|
444 state = sw_check_uri;
|
|
|
445 break;
|
|
|
446 }
|
|
|
447 break;
|
|
|
448
|
|
10
|
449 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
450 case sw_check_uri:
|
|
38
|
451
|
|
254
|
452 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
453 break;
|
|
|
454 }
|
|
|
455
|
|
0
|
456 switch (ch) {
|
|
38
|
457 case '/':
|
|
|
458 r->uri_ext = NULL;
|
|
|
459 state = sw_after_slash_in_uri;
|
|
|
460 break;
|
|
|
461 case '.':
|
|
|
462 r->uri_ext = p + 1;
|
|
|
463 break;
|
|
|
464 case ' ':
|
|
|
465 r->uri_end = p;
|
|
|
466 state = sw_http_09;
|
|
|
467 break;
|
|
0
|
468 case CR:
|
|
28
|
469 r->uri_end = p;
|
|
0
|
470 r->http_minor = 9;
|
|
|
471 state = sw_almost_done;
|
|
|
472 break;
|
|
|
473 case LF:
|
|
28
|
474 r->uri_end = p;
|
|
0
|
475 r->http_minor = 9;
|
|
28
|
476 goto done;
|
|
10
|
477 #if (NGX_WIN32)
|
|
|
478 case '\\':
|
|
|
479 r->complex_uri = 1;
|
|
|
480 state = sw_after_slash_in_uri;
|
|
|
481 break;
|
|
|
482 #endif
|
|
38
|
483 case '%':
|
|
|
484 r->quoted_uri = 1;
|
|
|
485 state = sw_uri;
|
|
0
|
486 break;
|
|
|
487 case '?':
|
|
28
|
488 r->args_start = p + 1;
|
|
0
|
489 state = sw_uri;
|
|
|
490 break;
|
|
254
|
491 case '#':
|
|
|
492 r->complex_uri = 1;
|
|
|
493 state = sw_uri;
|
|
|
494 break;
|
|
206
|
495 case '+':
|
|
|
496 r->plus_in_uri = 1;
|
|
|
497 break;
|
|
38
|
498 case '\0':
|
|
|
499 r->zero_in_uri = 1;
|
|
|
500 break;
|
|
0
|
501 }
|
|
|
502 break;
|
|
|
503
|
|
|
504 /* URI */
|
|
|
505 case sw_uri:
|
|
254
|
506
|
|
|
507 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
508 break;
|
|
|
509 }
|
|
|
510
|
|
0
|
511 switch (ch) {
|
|
38
|
512 case ' ':
|
|
|
513 r->uri_end = p;
|
|
|
514 state = sw_http_09;
|
|
|
515 break;
|
|
0
|
516 case CR:
|
|
28
|
517 r->uri_end = p;
|
|
0
|
518 r->http_minor = 9;
|
|
|
519 state = sw_almost_done;
|
|
|
520 break;
|
|
|
521 case LF:
|
|
28
|
522 r->uri_end = p;
|
|
0
|
523 r->http_minor = 9;
|
|
28
|
524 goto done;
|
|
254
|
525 case '#':
|
|
|
526 r->complex_uri = 1;
|
|
|
527 break;
|
|
38
|
528 case '\0':
|
|
|
529 r->zero_in_uri = 1;
|
|
0
|
530 break;
|
|
|
531 }
|
|
|
532 break;
|
|
|
533
|
|
|
534 /* space+ after URI */
|
|
|
535 case sw_http_09:
|
|
|
536 switch (ch) {
|
|
|
537 case ' ':
|
|
|
538 break;
|
|
|
539 case CR:
|
|
|
540 r->http_minor = 9;
|
|
|
541 state = sw_almost_done;
|
|
|
542 break;
|
|
|
543 case LF:
|
|
|
544 r->http_minor = 9;
|
|
28
|
545 goto done;
|
|
0
|
546 case 'H':
|
|
28
|
547 r->http_protocol.data = p;
|
|
0
|
548 state = sw_http_H;
|
|
|
549 break;
|
|
|
550 default:
|
|
|
551 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
552 }
|
|
|
553 break;
|
|
|
554
|
|
|
555 case sw_http_H:
|
|
|
556 switch (ch) {
|
|
|
557 case 'T':
|
|
|
558 state = sw_http_HT;
|
|
|
559 break;
|
|
|
560 default:
|
|
|
561 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
562 }
|
|
|
563 break;
|
|
|
564
|
|
|
565 case sw_http_HT:
|
|
|
566 switch (ch) {
|
|
|
567 case 'T':
|
|
|
568 state = sw_http_HTT;
|
|
|
569 break;
|
|
|
570 default:
|
|
|
571 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
572 }
|
|
|
573 break;
|
|
|
574
|
|
|
575 case sw_http_HTT:
|
|
|
576 switch (ch) {
|
|
|
577 case 'P':
|
|
|
578 state = sw_http_HTTP;
|
|
|
579 break;
|
|
|
580 default:
|
|
|
581 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
582 }
|
|
|
583 break;
|
|
|
584
|
|
|
585 case sw_http_HTTP:
|
|
|
586 switch (ch) {
|
|
|
587 case '/':
|
|
|
588 state = sw_first_major_digit;
|
|
|
589 break;
|
|
|
590 default:
|
|
|
591 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
592 }
|
|
|
593 break;
|
|
|
594
|
|
|
595 /* first digit of major HTTP version */
|
|
|
596 case sw_first_major_digit:
|
|
|
597 if (ch < '1' || ch > '9') {
|
|
|
598 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
599 }
|
|
|
600
|
|
|
601 r->http_major = ch - '0';
|
|
|
602 state = sw_major_digit;
|
|
|
603 break;
|
|
|
604
|
|
|
605 /* major HTTP version or dot */
|
|
|
606 case sw_major_digit:
|
|
|
607 if (ch == '.') {
|
|
|
608 state = sw_first_minor_digit;
|
|
|
609 break;
|
|
|
610 }
|
|
|
611
|
|
|
612 if (ch < '0' || ch > '9') {
|
|
|
613 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
614 }
|
|
|
615
|
|
|
616 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
617 break;
|
|
|
618
|
|
|
619 /* first digit of minor HTTP version */
|
|
|
620 case sw_first_minor_digit:
|
|
|
621 if (ch < '0' || ch > '9') {
|
|
|
622 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
623 }
|
|
|
624
|
|
|
625 r->http_minor = ch - '0';
|
|
|
626 state = sw_minor_digit;
|
|
|
627 break;
|
|
|
628
|
|
|
629 /* minor HTTP version or end of request line */
|
|
|
630 case sw_minor_digit:
|
|
|
631 if (ch == CR) {
|
|
|
632 state = sw_almost_done;
|
|
|
633 break;
|
|
|
634 }
|
|
|
635
|
|
|
636 if (ch == LF) {
|
|
28
|
637 goto done;
|
|
0
|
638 }
|
|
|
639
|
|
344
|
640 if (ch == ' ') {
|
|
|
641 state = sw_spaces_after_digit;
|
|
|
642 break;
|
|
|
643 }
|
|
|
644
|
|
0
|
645 if (ch < '0' || ch > '9') {
|
|
|
646 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
647 }
|
|
|
648
|
|
|
649 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
650 break;
|
|
|
651
|
|
344
|
652 case sw_spaces_after_digit:
|
|
|
653 switch (ch) {
|
|
|
654 case ' ':
|
|
|
655 break;
|
|
|
656 case CR:
|
|
|
657 state = sw_almost_done;
|
|
|
658 break;
|
|
|
659 case LF:
|
|
|
660 goto done;
|
|
|
661 default:
|
|
|
662 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
663 }
|
|
|
664 break;
|
|
|
665
|
|
0
|
666 /* end of request line */
|
|
|
667 case sw_almost_done:
|
|
28
|
668 r->request_end = p - 1;
|
|
0
|
669 switch (ch) {
|
|
|
670 case LF:
|
|
28
|
671 goto done;
|
|
0
|
672 default:
|
|
|
673 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
674 }
|
|
|
675 }
|
|
|
676 }
|
|
|
677
|
|
|
678 b->pos = p;
|
|
28
|
679 r->state = state;
|
|
0
|
680
|
|
28
|
681 return NGX_AGAIN;
|
|
0
|
682
|
|
28
|
683 done:
|
|
|
684
|
|
|
685 b->pos = p + 1;
|
|
0
|
686
|
|
28
|
687 if (r->request_end == NULL) {
|
|
|
688 r->request_end = p;
|
|
|
689 }
|
|
0
|
690
|
|
28
|
691 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
692 r->state = sw_start;
|
|
0
|
693
|
|
28
|
694 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
695 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
696 }
|
|
28
|
697
|
|
|
698 return NGX_OK;
|
|
0
|
699 }
|
|
|
700
|
|
|
701
|
|
58
|
702 ngx_int_t
|
|
420
|
703 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
704 ngx_uint_t allow_underscores)
|
|
0
|
705 {
|
|
56
|
706 u_char c, ch, *p;
|
|
198
|
707 ngx_uint_t hash, i;
|
|
0
|
708 enum {
|
|
|
709 sw_start = 0,
|
|
|
710 sw_name,
|
|
|
711 sw_space_before_value,
|
|
|
712 sw_value,
|
|
|
713 sw_space_after_value,
|
|
52
|
714 sw_ignore_line,
|
|
0
|
715 sw_almost_done,
|
|
52
|
716 sw_header_almost_done
|
|
0
|
717 } state;
|
|
|
718
|
|
250
|
719 /* the last '\0' is not needed because string is zero terminated */
|
|
|
720
|
|
198
|
721 static u_char lowcase[] =
|
|
|
722 "\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"
|
|
|
723 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
420
|
724 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
725 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
726 "\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"
|
|
|
727 "\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"
|
|
|
728 "\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"
|
|
|
729 "\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";
|
|
|
730
|
|
0
|
731 state = r->state;
|
|
56
|
732 hash = r->header_hash;
|
|
198
|
733 i = r->lowcase_index;
|
|
0
|
734
|
|
28
|
735 for (p = b->pos; p < b->last; p++) {
|
|
|
736 ch = *p;
|
|
0
|
737
|
|
|
738 switch (state) {
|
|
|
739
|
|
|
740 /* first char */
|
|
|
741 case sw_start:
|
|
535
|
742 r->header_name_start = p;
|
|
60
|
743 r->invalid_header = 0;
|
|
|
744
|
|
0
|
745 switch (ch) {
|
|
|
746 case CR:
|
|
28
|
747 r->header_end = p;
|
|
0
|
748 state = sw_header_almost_done;
|
|
|
749 break;
|
|
|
750 case LF:
|
|
28
|
751 r->header_end = p;
|
|
|
752 goto header_done;
|
|
0
|
753 default:
|
|
|
754 state = sw_name;
|
|
|
755
|
|
198
|
756 c = lowcase[ch];
|
|
0
|
757
|
|
198
|
758 if (c) {
|
|
|
759 hash = ngx_hash(0, c);
|
|
|
760 r->lowcase_header[0] = c;
|
|
|
761 i = 1;
|
|
0
|
762 break;
|
|
|
763 }
|
|
|
764
|
|
60
|
765 r->invalid_header = 1;
|
|
|
766
|
|
52
|
767 break;
|
|
0
|
768
|
|
|
769 }
|
|
|
770 break;
|
|
|
771
|
|
|
772 /* header name */
|
|
|
773 case sw_name:
|
|
198
|
774 c = lowcase[ch];
|
|
|
775
|
|
|
776 if (c) {
|
|
|
777 hash = ngx_hash(hash, c);
|
|
|
778 r->lowcase_header[i++] = c;
|
|
370
|
779 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
780 break;
|
|
|
781 }
|
|
|
782
|
|
420
|
783 if (ch == '_') {
|
|
|
784 if (allow_underscores) {
|
|
|
785 hash = ngx_hash(hash, ch);
|
|
|
786 r->lowcase_header[i++] = ch;
|
|
|
787 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
788
|
|
|
789 } else {
|
|
|
790 r->invalid_header = 1;
|
|
|
791 }
|
|
|
792
|
|
|
793 break;
|
|
|
794 }
|
|
|
795
|
|
0
|
796 if (ch == ':') {
|
|
28
|
797 r->header_name_end = p;
|
|
0
|
798 state = sw_space_before_value;
|
|
|
799 break;
|
|
|
800 }
|
|
|
801
|
|
58
|
802 if (ch == CR) {
|
|
|
803 r->header_name_end = p;
|
|
|
804 r->header_start = p;
|
|
|
805 r->header_end = p;
|
|
|
806 state = sw_almost_done;
|
|
|
807 break;
|
|
|
808 }
|
|
|
809
|
|
|
810 if (ch == LF) {
|
|
|
811 r->header_name_end = p;
|
|
|
812 r->header_start = p;
|
|
|
813 r->header_end = p;
|
|
|
814 goto done;
|
|
|
815 }
|
|
|
816
|
|
2
|
817 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
818 if (ch == '/'
|
|
58
|
819 && r->upstream
|
|
|
820 && p - r->header_name_start == 4
|
|
|
821 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
822 {
|
|
|
823 state = sw_ignore_line;
|
|
|
824 break;
|
|
|
825 }
|
|
|
826
|
|
60
|
827 r->invalid_header = 1;
|
|
|
828
|
|
52
|
829 break;
|
|
0
|
830
|
|
|
831 /* space* before header value */
|
|
|
832 case sw_space_before_value:
|
|
|
833 switch (ch) {
|
|
|
834 case ' ':
|
|
|
835 break;
|
|
|
836 case CR:
|
|
58
|
837 r->header_start = p;
|
|
|
838 r->header_end = p;
|
|
0
|
839 state = sw_almost_done;
|
|
|
840 break;
|
|
|
841 case LF:
|
|
58
|
842 r->header_start = p;
|
|
|
843 r->header_end = p;
|
|
28
|
844 goto done;
|
|
0
|
845 default:
|
|
28
|
846 r->header_start = p;
|
|
0
|
847 state = sw_value;
|
|
|
848 break;
|
|
|
849 }
|
|
|
850 break;
|
|
|
851
|
|
|
852 /* header value */
|
|
|
853 case sw_value:
|
|
|
854 switch (ch) {
|
|
|
855 case ' ':
|
|
28
|
856 r->header_end = p;
|
|
0
|
857 state = sw_space_after_value;
|
|
|
858 break;
|
|
|
859 case CR:
|
|
28
|
860 r->header_end = p;
|
|
0
|
861 state = sw_almost_done;
|
|
|
862 break;
|
|
|
863 case LF:
|
|
28
|
864 r->header_end = p;
|
|
|
865 goto done;
|
|
0
|
866 }
|
|
|
867 break;
|
|
|
868
|
|
|
869 /* space* before end of header line */
|
|
|
870 case sw_space_after_value:
|
|
|
871 switch (ch) {
|
|
|
872 case ' ':
|
|
|
873 break;
|
|
|
874 case CR:
|
|
|
875 state = sw_almost_done;
|
|
|
876 break;
|
|
|
877 case LF:
|
|
28
|
878 goto done;
|
|
0
|
879 default:
|
|
|
880 state = sw_value;
|
|
|
881 break;
|
|
|
882 }
|
|
|
883 break;
|
|
|
884
|
|
|
885 /* ignore header line */
|
|
|
886 case sw_ignore_line:
|
|
|
887 switch (ch) {
|
|
|
888 case LF:
|
|
|
889 state = sw_start;
|
|
|
890 break;
|
|
|
891 default:
|
|
|
892 break;
|
|
|
893 }
|
|
|
894 break;
|
|
|
895
|
|
|
896 /* end of header line */
|
|
|
897 case sw_almost_done:
|
|
|
898 switch (ch) {
|
|
370
|
899 case LF:
|
|
|
900 goto done;
|
|
172
|
901 case CR:
|
|
|
902 break;
|
|
0
|
903 default:
|
|
|
904 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
905 }
|
|
174
|
906 break;
|
|
0
|
907
|
|
|
908 /* end of header */
|
|
|
909 case sw_header_almost_done:
|
|
|
910 switch (ch) {
|
|
|
911 case LF:
|
|
28
|
912 goto header_done;
|
|
0
|
913 default:
|
|
|
914 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
915 }
|
|
|
916 }
|
|
|
917 }
|
|
|
918
|
|
|
919 b->pos = p;
|
|
28
|
920 r->state = state;
|
|
56
|
921 r->header_hash = hash;
|
|
198
|
922 r->lowcase_index = i;
|
|
0
|
923
|
|
28
|
924 return NGX_AGAIN;
|
|
|
925
|
|
|
926 done:
|
|
|
927
|
|
|
928 b->pos = p + 1;
|
|
|
929 r->state = sw_start;
|
|
56
|
930 r->header_hash = hash;
|
|
198
|
931 r->lowcase_index = i;
|
|
0
|
932
|
|
28
|
933 return NGX_OK;
|
|
|
934
|
|
|
935 header_done:
|
|
0
|
936
|
|
28
|
937 b->pos = p + 1;
|
|
|
938 r->state = sw_start;
|
|
|
939
|
|
|
940 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
941 }
|
|
|
942
|
|
|
943
|
|
58
|
944 ngx_int_t
|
|
342
|
945 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
946 {
|
|
|
947 u_char c, ch, decoded, *p, *u;
|
|
|
948 enum {
|
|
|
949 sw_usual = 0,
|
|
|
950 sw_slash,
|
|
|
951 sw_dot,
|
|
|
952 sw_dot_dot,
|
|
|
953 sw_quoted,
|
|
|
954 sw_quoted_second
|
|
|
955 } state, quoted_state;
|
|
|
956
|
|
28
|
957 #if (NGX_SUPPRESS_WARN)
|
|
0
|
958 decoded = '\0';
|
|
|
959 quoted_state = sw_usual;
|
|
28
|
960 #endif
|
|
0
|
961
|
|
|
962 state = sw_usual;
|
|
|
963 p = r->uri_start;
|
|
|
964 u = r->uri.data;
|
|
|
965 r->uri_ext = NULL;
|
|
10
|
966 r->args_start = NULL;
|
|
0
|
967
|
|
|
968 ch = *p++;
|
|
|
969
|
|
28
|
970 while (p <= r->uri_end) {
|
|
10
|
971
|
|
|
972 /*
|
|
28
|
973 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
974 * because after the URI there is always at least one charcter:
|
|
|
975 * the line feed
|
|
|
976 */
|
|
0
|
977
|
|
|
978 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
979 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
980
|
|
|
981 switch (state) {
|
|
122
|
982
|
|
0
|
983 case sw_usual:
|
|
254
|
984
|
|
|
985 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
986 *u++ = ch;
|
|
|
987 ch = *p++;
|
|
|
988 break;
|
|
|
989 }
|
|
|
990
|
|
0
|
991 switch(ch) {
|
|
10
|
992 #if (NGX_WIN32)
|
|
|
993 case '\\':
|
|
|
994 r->uri_ext = NULL;
|
|
|
995
|
|
|
996 if (p == r->uri_start + r->uri.len) {
|
|
|
997
|
|
|
998 /*
|
|
|
999 * we omit the last "\" to cause redirect because
|
|
|
1000 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1001 */
|
|
|
1002
|
|
|
1003 break;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 state = sw_slash;
|
|
|
1007 *u++ = '/';
|
|
|
1008 break;
|
|
|
1009 #endif
|
|
0
|
1010 case '/':
|
|
|
1011 r->uri_ext = NULL;
|
|
|
1012 state = sw_slash;
|
|
|
1013 *u++ = ch;
|
|
|
1014 break;
|
|
|
1015 case '%':
|
|
|
1016 quoted_state = state;
|
|
|
1017 state = sw_quoted;
|
|
|
1018 break;
|
|
10
|
1019 case '?':
|
|
|
1020 r->args_start = p;
|
|
254
|
1021 goto args;
|
|
|
1022 case '#':
|
|
28
|
1023 goto done;
|
|
0
|
1024 case '.':
|
|
|
1025 r->uri_ext = u + 1;
|
|
22
|
1026 *u++ = ch;
|
|
|
1027 break;
|
|
206
|
1028 case '+':
|
|
|
1029 r->plus_in_uri = 1;
|
|
0
|
1030 default:
|
|
|
1031 *u++ = ch;
|
|
|
1032 break;
|
|
|
1033 }
|
|
254
|
1034
|
|
0
|
1035 ch = *p++;
|
|
|
1036 break;
|
|
|
1037
|
|
|
1038 case sw_slash:
|
|
254
|
1039
|
|
|
1040 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1041 state = sw_usual;
|
|
|
1042 *u++ = ch;
|
|
|
1043 ch = *p++;
|
|
|
1044 break;
|
|
|
1045 }
|
|
|
1046
|
|
0
|
1047 switch(ch) {
|
|
10
|
1048 #if (NGX_WIN32)
|
|
|
1049 case '\\':
|
|
342
|
1050 break;
|
|
10
|
1051 #endif
|
|
0
|
1052 case '/':
|
|
356
|
1053 if (!merge_slashes) {
|
|
342
|
1054 *u++ = ch;
|
|
|
1055 }
|
|
0
|
1056 break;
|
|
|
1057 case '.':
|
|
|
1058 state = sw_dot;
|
|
|
1059 *u++ = ch;
|
|
|
1060 break;
|
|
|
1061 case '%':
|
|
|
1062 quoted_state = state;
|
|
|
1063 state = sw_quoted;
|
|
|
1064 break;
|
|
28
|
1065 case '?':
|
|
|
1066 r->args_start = p;
|
|
254
|
1067 goto args;
|
|
|
1068 case '#':
|
|
28
|
1069 goto done;
|
|
206
|
1070 case '+':
|
|
|
1071 r->plus_in_uri = 1;
|
|
0
|
1072 default:
|
|
|
1073 state = sw_usual;
|
|
|
1074 *u++ = ch;
|
|
|
1075 break;
|
|
|
1076 }
|
|
254
|
1077
|
|
0
|
1078 ch = *p++;
|
|
|
1079 break;
|
|
|
1080
|
|
|
1081 case sw_dot:
|
|
254
|
1082
|
|
|
1083 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1084 state = sw_usual;
|
|
|
1085 *u++ = ch;
|
|
|
1086 ch = *p++;
|
|
|
1087 break;
|
|
|
1088 }
|
|
|
1089
|
|
0
|
1090 switch(ch) {
|
|
10
|
1091 #if (NGX_WIN32)
|
|
|
1092 case '\\':
|
|
|
1093 #endif
|
|
0
|
1094 case '/':
|
|
|
1095 state = sw_slash;
|
|
|
1096 u--;
|
|
|
1097 break;
|
|
|
1098 case '.':
|
|
|
1099 state = sw_dot_dot;
|
|
|
1100 *u++ = ch;
|
|
|
1101 break;
|
|
|
1102 case '%':
|
|
|
1103 quoted_state = state;
|
|
|
1104 state = sw_quoted;
|
|
|
1105 break;
|
|
28
|
1106 case '?':
|
|
|
1107 r->args_start = p;
|
|
254
|
1108 goto args;
|
|
|
1109 case '#':
|
|
28
|
1110 goto done;
|
|
206
|
1111 case '+':
|
|
|
1112 r->plus_in_uri = 1;
|
|
0
|
1113 default:
|
|
|
1114 state = sw_usual;
|
|
|
1115 *u++ = ch;
|
|
|
1116 break;
|
|
|
1117 }
|
|
254
|
1118
|
|
0
|
1119 ch = *p++;
|
|
|
1120 break;
|
|
|
1121
|
|
|
1122 case sw_dot_dot:
|
|
254
|
1123
|
|
|
1124 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1125 state = sw_usual;
|
|
|
1126 *u++ = ch;
|
|
|
1127 ch = *p++;
|
|
|
1128 break;
|
|
|
1129 }
|
|
|
1130
|
|
0
|
1131 switch(ch) {
|
|
10
|
1132 #if (NGX_WIN32)
|
|
|
1133 case '\\':
|
|
|
1134 #endif
|
|
0
|
1135 case '/':
|
|
|
1136 state = sw_slash;
|
|
|
1137 u -= 4;
|
|
|
1138 if (u < r->uri.data) {
|
|
|
1139 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1140 }
|
|
|
1141 while (*(u - 1) != '/') {
|
|
|
1142 u--;
|
|
|
1143 }
|
|
|
1144 break;
|
|
|
1145 case '%':
|
|
|
1146 quoted_state = state;
|
|
|
1147 state = sw_quoted;
|
|
|
1148 break;
|
|
28
|
1149 case '?':
|
|
|
1150 r->args_start = p;
|
|
254
|
1151 goto args;
|
|
|
1152 case '#':
|
|
28
|
1153 goto done;
|
|
206
|
1154 case '+':
|
|
|
1155 r->plus_in_uri = 1;
|
|
0
|
1156 default:
|
|
|
1157 state = sw_usual;
|
|
|
1158 *u++ = ch;
|
|
|
1159 break;
|
|
|
1160 }
|
|
254
|
1161
|
|
0
|
1162 ch = *p++;
|
|
|
1163 break;
|
|
|
1164
|
|
|
1165 case sw_quoted:
|
|
216
|
1166 r->quoted_uri = 1;
|
|
|
1167
|
|
0
|
1168 if (ch >= '0' && ch <= '9') {
|
|
|
1169 decoded = (u_char) (ch - '0');
|
|
|
1170 state = sw_quoted_second;
|
|
|
1171 ch = *p++;
|
|
|
1172 break;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 c = (u_char) (ch | 0x20);
|
|
|
1176 if (c >= 'a' && c <= 'f') {
|
|
|
1177 decoded = (u_char) (c - 'a' + 10);
|
|
|
1178 state = sw_quoted_second;
|
|
|
1179 ch = *p++;
|
|
|
1180 break;
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1184
|
|
|
1185 case sw_quoted_second:
|
|
|
1186 if (ch >= '0' && ch <= '9') {
|
|
|
1187 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1188
|
|
0
|
1189 if (ch == '%') {
|
|
|
1190 state = sw_usual;
|
|
|
1191 *u++ = ch;
|
|
|
1192 ch = *p++;
|
|
|
1193 break;
|
|
|
1194 }
|
|
38
|
1195
|
|
254
|
1196 if (ch == '#') {
|
|
|
1197 *u++ = ch;
|
|
|
1198 ch = *p++;
|
|
|
1199
|
|
|
1200 } else if (ch == '\0') {
|
|
38
|
1201 r->zero_in_uri = 1;
|
|
|
1202 }
|
|
|
1203
|
|
0
|
1204 state = quoted_state;
|
|
|
1205 break;
|
|
|
1206 }
|
|
|
1207
|
|
|
1208 c = (u_char) (ch | 0x20);
|
|
|
1209 if (c >= 'a' && c <= 'f') {
|
|
|
1210 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1211
|
|
28
|
1212 if (ch == '?') {
|
|
0
|
1213 *u++ = ch;
|
|
|
1214 ch = *p++;
|
|
206
|
1215
|
|
|
1216 } else if (ch == '+') {
|
|
|
1217 r->plus_in_uri = 1;
|
|
0
|
1218 }
|
|
206
|
1219
|
|
0
|
1220 state = quoted_state;
|
|
|
1221 break;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1225 }
|
|
|
1226 }
|
|
|
1227
|
|
28
|
1228 done:
|
|
|
1229
|
|
0
|
1230 r->uri.len = u - r->uri.data;
|
|
254
|
1231
|
|
|
1232 if (r->uri_ext) {
|
|
|
1233 r->exten.len = u - r->uri_ext;
|
|
|
1234 r->exten.data = r->uri_ext;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 r->uri_ext = NULL;
|
|
|
1238
|
|
|
1239 return NGX_OK;
|
|
|
1240
|
|
|
1241 args:
|
|
|
1242
|
|
|
1243 while (p < r->uri_end) {
|
|
|
1244 if (*p++ != '#') {
|
|
|
1245 continue;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 r->args.len = p - 1 - r->args_start;
|
|
|
1249 r->args.data = r->args_start;
|
|
|
1250 r->args_start = NULL;
|
|
|
1251
|
|
|
1252 break;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 r->uri.len = u - r->uri.data;
|
|
0
|
1256
|
|
|
1257 if (r->uri_ext) {
|
|
|
1258 r->exten.len = u - r->uri_ext;
|
|
10
|
1259 r->exten.data = r->uri_ext;
|
|
0
|
1260 }
|
|
|
1261
|
|
|
1262 r->uri_ext = NULL;
|
|
|
1263
|
|
|
1264 return NGX_OK;
|
|
|
1265 }
|
|
58
|
1266
|
|
|
1267
|
|
|
1268 ngx_int_t
|
|
122
|
1269 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1270 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1271 {
|
|
|
1272 u_char ch, *p;
|
|
|
1273 size_t len;
|
|
|
1274
|
|
|
1275 len = uri->len;
|
|
|
1276 p = uri->data;
|
|
|
1277
|
|
|
1278 if (len == 0 || p[0] == '?') {
|
|
|
1279 goto unsafe;
|
|
|
1280 }
|
|
|
1281
|
|
491
|
1282 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1283 goto unsafe;
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 for ( /* void */ ; len; len--) {
|
|
|
1287
|
|
|
1288 ch = *p++;
|
|
|
1289
|
|
254
|
1290 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1291 continue;
|
|
|
1292 }
|
|
|
1293
|
|
122
|
1294 if (ch == '?') {
|
|
|
1295 args->len = len - 1;
|
|
|
1296 args->data = p;
|
|
|
1297 uri->len -= len;
|
|
|
1298
|
|
|
1299 return NGX_OK;
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 if (ch == '\0') {
|
|
|
1303 *flags |= NGX_HTTP_ZERO_IN_URI;
|
|
|
1304 continue;
|
|
|
1305 }
|
|
|
1306
|
|
491
|
1307 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1308
|
|
122
|
1309 /* detect "/../" */
|
|
|
1310
|
|
491
|
1311 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1312 goto unsafe;
|
|
|
1313 }
|
|
|
1314 }
|
|
|
1315 }
|
|
|
1316
|
|
|
1317 return NGX_OK;
|
|
|
1318
|
|
|
1319 unsafe:
|
|
|
1320
|
|
|
1321 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1322 "unsafe URI \"%V\" was detected", uri);
|
|
|
1323
|
|
|
1324 return NGX_ERROR;
|
|
|
1325 }
|
|
|
1326
|
|
|
1327
|
|
|
1328 ngx_int_t
|
|
58
|
1329 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1330 ngx_str_t *value)
|
|
|
1331 {
|
|
|
1332 ngx_uint_t i;
|
|
|
1333 u_char *start, *last, *end, ch;
|
|
|
1334 ngx_table_elt_t **h;
|
|
|
1335
|
|
|
1336 h = headers->elts;
|
|
|
1337
|
|
|
1338 for (i = 0; i < headers->nelts; i++) {
|
|
|
1339
|
|
|
1340 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1341 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1342
|
|
|
1343 if (name->len > h[i]->value.len) {
|
|
|
1344 continue;
|
|
|
1345 }
|
|
126
|
1346
|
|
58
|
1347 start = h[i]->value.data;
|
|
|
1348 end = h[i]->value.data + h[i]->value.len;
|
|
|
1349
|
|
|
1350 while (start < end) {
|
|
|
1351
|
|
|
1352 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1353 goto skip;
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1357 /* void */
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 if (value == NULL) {
|
|
|
1361 if (start == end || *start == ',') {
|
|
|
1362 return i;
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 goto skip;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 if (start == end || *start++ != '=') {
|
|
|
1369 /* the invalid header value */
|
|
|
1370 goto skip;
|
|
|
1371 }
|
|
|
1372
|
|
|
1373 while (start < end && *start == ' ') { start++; }
|
|
|
1374
|
|
|
1375 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1376 /* void */
|
|
|
1377 }
|
|
|
1378
|
|
|
1379 value->len = last - start;
|
|
|
1380 value->data = start;
|
|
|
1381
|
|
|
1382 return i;
|
|
|
1383
|
|
|
1384 skip:
|
|
122
|
1385
|
|
58
|
1386 while (start < end) {
|
|
|
1387 ch = *start++;
|
|
|
1388 if (ch == ';' || ch == ',') {
|
|
|
1389 break;
|
|
|
1390 }
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 while (start < end && *start == ' ') { start++; }
|
|
|
1394 }
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 return NGX_DECLINED;
|
|
|
1398 }
|
|
441
|
1399
|
|
|
1400
|
|
|
1401 ngx_int_t
|
|
|
1402 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1403 {
|
|
481
|
1404 u_char *p, *last;
|
|
441
|
1405
|
|
|
1406 if (r->args.len == 0) {
|
|
|
1407 return NGX_DECLINED;
|
|
|
1408 }
|
|
|
1409
|
|
481
|
1410 p = r->args.data;
|
|
|
1411 last = p + r->args.len;
|
|
441
|
1412
|
|
481
|
1413 for ( /* void */ ; p < last; p++) {
|
|
441
|
1414
|
|
481
|
1415 /* we need '=' after name, so drop one char from last */
|
|
|
1416
|
|
|
1417 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
441
|
1418
|
|
|
1419 if (p == NULL) {
|
|
|
1420 return NGX_DECLINED;
|
|
|
1421 }
|
|
|
1422
|
|
|
1423 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1424
|
|
|
1425 value->data = p + len + 1;
|
|
|
1426
|
|
481
|
1427 p = ngx_strlchr(p, last, '&');
|
|
441
|
1428
|
|
|
1429 if (p == NULL) {
|
|
|
1430 p = r->args.data + r->args.len;
|
|
|
1431 }
|
|
|
1432
|
|
|
1433 value->len = p - value->data;
|
|
|
1434
|
|
|
1435 return NGX_OK;
|
|
|
1436 }
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 return NGX_DECLINED;
|
|
|
1440 }
|
|
473
|
1441
|
|
|
1442
|
|
|
1443 void
|
|
|
1444 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1445 {
|
|
|
1446 u_char ch, *p, *last;
|
|
|
1447
|
|
|
1448 p = uri->data;
|
|
|
1449
|
|
|
1450 last = p + uri->len;
|
|
|
1451
|
|
479
|
1452 args->len = 0;
|
|
|
1453
|
|
473
|
1454 while (p < last) {
|
|
|
1455
|
|
|
1456 ch = *p++;
|
|
|
1457
|
|
|
1458 if (ch == '?') {
|
|
|
1459 args->len = last - p;
|
|
|
1460 args->data = p;
|
|
|
1461
|
|
|
1462 uri->len = p - 1 - uri->data;
|
|
|
1463
|
|
|
1464 if (ngx_strlchr(p, last, '\0') != NULL) {
|
|
|
1465 r->zero_in_uri = 1;
|
|
|
1466 }
|
|
|
1467
|
|
|
1468 return;
|
|
|
1469 }
|
|
|
1470
|
|
|
1471 if (ch == '\0') {
|
|
|
1472 r->zero_in_uri = 1;
|
|
|
1473 continue;
|
|
|
1474 }
|
|
|
1475 }
|
|
|
1476 }
|
