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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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506
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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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506
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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':
|
|
572
|
441 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
442 default:
|
|
|
443 state = sw_check_uri;
|
|
|
444 break;
|
|
|
445 }
|
|
|
446 break;
|
|
|
447
|
|
10
|
448 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
449 case sw_check_uri:
|
|
38
|
450
|
|
254
|
451 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
452 break;
|
|
|
453 }
|
|
|
454
|
|
0
|
455 switch (ch) {
|
|
38
|
456 case '/':
|
|
|
457 r->uri_ext = NULL;
|
|
|
458 state = sw_after_slash_in_uri;
|
|
|
459 break;
|
|
|
460 case '.':
|
|
|
461 r->uri_ext = p + 1;
|
|
|
462 break;
|
|
|
463 case ' ':
|
|
|
464 r->uri_end = p;
|
|
|
465 state = sw_http_09;
|
|
|
466 break;
|
|
0
|
467 case CR:
|
|
28
|
468 r->uri_end = p;
|
|
0
|
469 r->http_minor = 9;
|
|
|
470 state = sw_almost_done;
|
|
|
471 break;
|
|
|
472 case LF:
|
|
28
|
473 r->uri_end = p;
|
|
0
|
474 r->http_minor = 9;
|
|
28
|
475 goto done;
|
|
10
|
476 #if (NGX_WIN32)
|
|
|
477 case '\\':
|
|
|
478 r->complex_uri = 1;
|
|
|
479 state = sw_after_slash_in_uri;
|
|
|
480 break;
|
|
|
481 #endif
|
|
38
|
482 case '%':
|
|
|
483 r->quoted_uri = 1;
|
|
|
484 state = sw_uri;
|
|
0
|
485 break;
|
|
|
486 case '?':
|
|
28
|
487 r->args_start = p + 1;
|
|
0
|
488 state = sw_uri;
|
|
|
489 break;
|
|
254
|
490 case '#':
|
|
|
491 r->complex_uri = 1;
|
|
|
492 state = sw_uri;
|
|
|
493 break;
|
|
206
|
494 case '+':
|
|
|
495 r->plus_in_uri = 1;
|
|
|
496 break;
|
|
38
|
497 case '\0':
|
|
572
|
498 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
499 }
|
|
|
500 break;
|
|
|
501
|
|
|
502 /* URI */
|
|
|
503 case sw_uri:
|
|
254
|
504
|
|
|
505 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
506 break;
|
|
|
507 }
|
|
|
508
|
|
0
|
509 switch (ch) {
|
|
38
|
510 case ' ':
|
|
|
511 r->uri_end = p;
|
|
|
512 state = sw_http_09;
|
|
|
513 break;
|
|
0
|
514 case CR:
|
|
28
|
515 r->uri_end = p;
|
|
0
|
516 r->http_minor = 9;
|
|
|
517 state = sw_almost_done;
|
|
|
518 break;
|
|
|
519 case LF:
|
|
28
|
520 r->uri_end = p;
|
|
0
|
521 r->http_minor = 9;
|
|
28
|
522 goto done;
|
|
254
|
523 case '#':
|
|
|
524 r->complex_uri = 1;
|
|
|
525 break;
|
|
38
|
526 case '\0':
|
|
572
|
527 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
528 }
|
|
|
529 break;
|
|
|
530
|
|
|
531 /* space+ after URI */
|
|
|
532 case sw_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;
|
|
28
|
542 goto done;
|
|
0
|
543 case 'H':
|
|
28
|
544 r->http_protocol.data = p;
|
|
0
|
545 state = sw_http_H;
|
|
|
546 break;
|
|
|
547 default:
|
|
|
548 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
549 }
|
|
|
550 break;
|
|
|
551
|
|
|
552 case sw_http_H:
|
|
|
553 switch (ch) {
|
|
|
554 case 'T':
|
|
|
555 state = sw_http_HT;
|
|
|
556 break;
|
|
|
557 default:
|
|
|
558 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
559 }
|
|
|
560 break;
|
|
|
561
|
|
|
562 case sw_http_HT:
|
|
|
563 switch (ch) {
|
|
|
564 case 'T':
|
|
|
565 state = sw_http_HTT;
|
|
|
566 break;
|
|
|
567 default:
|
|
|
568 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
569 }
|
|
|
570 break;
|
|
|
571
|
|
|
572 case sw_http_HTT:
|
|
|
573 switch (ch) {
|
|
|
574 case 'P':
|
|
|
575 state = sw_http_HTTP;
|
|
|
576 break;
|
|
|
577 default:
|
|
|
578 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
579 }
|
|
|
580 break;
|
|
|
581
|
|
|
582 case sw_http_HTTP:
|
|
|
583 switch (ch) {
|
|
|
584 case '/':
|
|
|
585 state = sw_first_major_digit;
|
|
|
586 break;
|
|
|
587 default:
|
|
|
588 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
589 }
|
|
|
590 break;
|
|
|
591
|
|
|
592 /* first digit of major HTTP version */
|
|
|
593 case sw_first_major_digit:
|
|
|
594 if (ch < '1' || ch > '9') {
|
|
|
595 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
596 }
|
|
|
597
|
|
|
598 r->http_major = ch - '0';
|
|
|
599 state = sw_major_digit;
|
|
|
600 break;
|
|
|
601
|
|
|
602 /* major HTTP version or dot */
|
|
|
603 case sw_major_digit:
|
|
|
604 if (ch == '.') {
|
|
|
605 state = sw_first_minor_digit;
|
|
|
606 break;
|
|
|
607 }
|
|
|
608
|
|
|
609 if (ch < '0' || ch > '9') {
|
|
|
610 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
611 }
|
|
|
612
|
|
|
613 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
614 break;
|
|
|
615
|
|
|
616 /* first digit of minor HTTP version */
|
|
|
617 case sw_first_minor_digit:
|
|
|
618 if (ch < '0' || ch > '9') {
|
|
|
619 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
620 }
|
|
|
621
|
|
|
622 r->http_minor = ch - '0';
|
|
|
623 state = sw_minor_digit;
|
|
|
624 break;
|
|
|
625
|
|
|
626 /* minor HTTP version or end of request line */
|
|
|
627 case sw_minor_digit:
|
|
|
628 if (ch == CR) {
|
|
|
629 state = sw_almost_done;
|
|
|
630 break;
|
|
|
631 }
|
|
|
632
|
|
|
633 if (ch == LF) {
|
|
28
|
634 goto done;
|
|
0
|
635 }
|
|
|
636
|
|
344
|
637 if (ch == ' ') {
|
|
|
638 state = sw_spaces_after_digit;
|
|
|
639 break;
|
|
|
640 }
|
|
|
641
|
|
0
|
642 if (ch < '0' || ch > '9') {
|
|
|
643 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
644 }
|
|
|
645
|
|
|
646 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
647 break;
|
|
|
648
|
|
344
|
649 case sw_spaces_after_digit:
|
|
|
650 switch (ch) {
|
|
|
651 case ' ':
|
|
|
652 break;
|
|
|
653 case CR:
|
|
|
654 state = sw_almost_done;
|
|
|
655 break;
|
|
|
656 case LF:
|
|
|
657 goto done;
|
|
|
658 default:
|
|
|
659 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
660 }
|
|
|
661 break;
|
|
|
662
|
|
0
|
663 /* end of request line */
|
|
|
664 case sw_almost_done:
|
|
28
|
665 r->request_end = p - 1;
|
|
0
|
666 switch (ch) {
|
|
|
667 case LF:
|
|
28
|
668 goto done;
|
|
0
|
669 default:
|
|
|
670 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
671 }
|
|
|
672 }
|
|
|
673 }
|
|
|
674
|
|
|
675 b->pos = p;
|
|
28
|
676 r->state = state;
|
|
0
|
677
|
|
28
|
678 return NGX_AGAIN;
|
|
0
|
679
|
|
28
|
680 done:
|
|
|
681
|
|
|
682 b->pos = p + 1;
|
|
0
|
683
|
|
28
|
684 if (r->request_end == NULL) {
|
|
|
685 r->request_end = p;
|
|
|
686 }
|
|
0
|
687
|
|
28
|
688 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
689 r->state = sw_start;
|
|
0
|
690
|
|
28
|
691 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
692 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
693 }
|
|
28
|
694
|
|
|
695 return NGX_OK;
|
|
0
|
696 }
|
|
|
697
|
|
|
698
|
|
58
|
699 ngx_int_t
|
|
412
|
700 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
701 ngx_uint_t allow_underscores)
|
|
0
|
702 {
|
|
56
|
703 u_char c, ch, *p;
|
|
198
|
704 ngx_uint_t hash, i;
|
|
0
|
705 enum {
|
|
|
706 sw_start = 0,
|
|
|
707 sw_name,
|
|
|
708 sw_space_before_value,
|
|
|
709 sw_value,
|
|
|
710 sw_space_after_value,
|
|
52
|
711 sw_ignore_line,
|
|
0
|
712 sw_almost_done,
|
|
52
|
713 sw_header_almost_done
|
|
0
|
714 } state;
|
|
|
715
|
|
250
|
716 /* the last '\0' is not needed because string is zero terminated */
|
|
|
717
|
|
198
|
718 static u_char lowcase[] =
|
|
|
719 "\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"
|
|
|
720 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
721 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
722 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
723 "\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"
|
|
|
724 "\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"
|
|
|
725 "\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"
|
|
|
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";
|
|
|
727
|
|
0
|
728 state = r->state;
|
|
56
|
729 hash = r->header_hash;
|
|
198
|
730 i = r->lowcase_index;
|
|
0
|
731
|
|
28
|
732 for (p = b->pos; p < b->last; p++) {
|
|
|
733 ch = *p;
|
|
0
|
734
|
|
|
735 switch (state) {
|
|
|
736
|
|
|
737 /* first char */
|
|
|
738 case sw_start:
|
|
524
|
739 r->header_name_start = p;
|
|
60
|
740 r->invalid_header = 0;
|
|
|
741
|
|
0
|
742 switch (ch) {
|
|
|
743 case CR:
|
|
28
|
744 r->header_end = p;
|
|
0
|
745 state = sw_header_almost_done;
|
|
|
746 break;
|
|
|
747 case LF:
|
|
28
|
748 r->header_end = p;
|
|
|
749 goto header_done;
|
|
0
|
750 default:
|
|
|
751 state = sw_name;
|
|
|
752
|
|
198
|
753 c = lowcase[ch];
|
|
0
|
754
|
|
198
|
755 if (c) {
|
|
|
756 hash = ngx_hash(0, c);
|
|
|
757 r->lowcase_header[0] = c;
|
|
|
758 i = 1;
|
|
0
|
759 break;
|
|
|
760 }
|
|
|
761
|
|
60
|
762 r->invalid_header = 1;
|
|
|
763
|
|
52
|
764 break;
|
|
0
|
765
|
|
|
766 }
|
|
|
767 break;
|
|
|
768
|
|
|
769 /* header name */
|
|
|
770 case sw_name:
|
|
198
|
771 c = lowcase[ch];
|
|
|
772
|
|
|
773 if (c) {
|
|
|
774 hash = ngx_hash(hash, c);
|
|
|
775 r->lowcase_header[i++] = c;
|
|
370
|
776 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
777 break;
|
|
|
778 }
|
|
|
779
|
|
412
|
780 if (ch == '_') {
|
|
|
781 if (allow_underscores) {
|
|
|
782 hash = ngx_hash(hash, ch);
|
|
|
783 r->lowcase_header[i++] = ch;
|
|
|
784 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
785
|
|
|
786 } else {
|
|
|
787 r->invalid_header = 1;
|
|
|
788 }
|
|
|
789
|
|
|
790 break;
|
|
|
791 }
|
|
|
792
|
|
0
|
793 if (ch == ':') {
|
|
28
|
794 r->header_name_end = p;
|
|
0
|
795 state = sw_space_before_value;
|
|
|
796 break;
|
|
|
797 }
|
|
|
798
|
|
58
|
799 if (ch == CR) {
|
|
|
800 r->header_name_end = p;
|
|
|
801 r->header_start = p;
|
|
|
802 r->header_end = p;
|
|
|
803 state = sw_almost_done;
|
|
|
804 break;
|
|
|
805 }
|
|
|
806
|
|
|
807 if (ch == LF) {
|
|
|
808 r->header_name_end = p;
|
|
|
809 r->header_start = p;
|
|
|
810 r->header_end = p;
|
|
|
811 goto done;
|
|
|
812 }
|
|
|
813
|
|
2
|
814 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
815 if (ch == '/'
|
|
58
|
816 && r->upstream
|
|
|
817 && p - r->header_name_start == 4
|
|
|
818 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
819 {
|
|
|
820 state = sw_ignore_line;
|
|
|
821 break;
|
|
|
822 }
|
|
|
823
|
|
60
|
824 r->invalid_header = 1;
|
|
|
825
|
|
52
|
826 break;
|
|
0
|
827
|
|
|
828 /* space* before header value */
|
|
|
829 case sw_space_before_value:
|
|
|
830 switch (ch) {
|
|
|
831 case ' ':
|
|
|
832 break;
|
|
|
833 case CR:
|
|
58
|
834 r->header_start = p;
|
|
|
835 r->header_end = p;
|
|
0
|
836 state = sw_almost_done;
|
|
|
837 break;
|
|
|
838 case LF:
|
|
58
|
839 r->header_start = p;
|
|
|
840 r->header_end = p;
|
|
28
|
841 goto done;
|
|
0
|
842 default:
|
|
28
|
843 r->header_start = p;
|
|
0
|
844 state = sw_value;
|
|
|
845 break;
|
|
|
846 }
|
|
|
847 break;
|
|
|
848
|
|
|
849 /* header value */
|
|
|
850 case sw_value:
|
|
|
851 switch (ch) {
|
|
|
852 case ' ':
|
|
28
|
853 r->header_end = p;
|
|
0
|
854 state = sw_space_after_value;
|
|
|
855 break;
|
|
|
856 case CR:
|
|
28
|
857 r->header_end = p;
|
|
0
|
858 state = sw_almost_done;
|
|
|
859 break;
|
|
|
860 case LF:
|
|
28
|
861 r->header_end = p;
|
|
|
862 goto done;
|
|
0
|
863 }
|
|
|
864 break;
|
|
|
865
|
|
|
866 /* space* before end of header line */
|
|
|
867 case sw_space_after_value:
|
|
|
868 switch (ch) {
|
|
|
869 case ' ':
|
|
|
870 break;
|
|
|
871 case CR:
|
|
|
872 state = sw_almost_done;
|
|
|
873 break;
|
|
|
874 case LF:
|
|
28
|
875 goto done;
|
|
0
|
876 default:
|
|
|
877 state = sw_value;
|
|
|
878 break;
|
|
|
879 }
|
|
|
880 break;
|
|
|
881
|
|
|
882 /* ignore header line */
|
|
|
883 case sw_ignore_line:
|
|
|
884 switch (ch) {
|
|
|
885 case LF:
|
|
|
886 state = sw_start;
|
|
|
887 break;
|
|
|
888 default:
|
|
|
889 break;
|
|
|
890 }
|
|
|
891 break;
|
|
|
892
|
|
|
893 /* end of header line */
|
|
|
894 case sw_almost_done:
|
|
|
895 switch (ch) {
|
|
370
|
896 case LF:
|
|
|
897 goto done;
|
|
172
|
898 case CR:
|
|
|
899 break;
|
|
0
|
900 default:
|
|
|
901 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
902 }
|
|
174
|
903 break;
|
|
0
|
904
|
|
|
905 /* end of header */
|
|
|
906 case sw_header_almost_done:
|
|
|
907 switch (ch) {
|
|
|
908 case LF:
|
|
28
|
909 goto header_done;
|
|
0
|
910 default:
|
|
|
911 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
912 }
|
|
|
913 }
|
|
|
914 }
|
|
|
915
|
|
|
916 b->pos = p;
|
|
28
|
917 r->state = state;
|
|
56
|
918 r->header_hash = hash;
|
|
198
|
919 r->lowcase_index = i;
|
|
0
|
920
|
|
28
|
921 return NGX_AGAIN;
|
|
|
922
|
|
|
923 done:
|
|
|
924
|
|
|
925 b->pos = p + 1;
|
|
|
926 r->state = sw_start;
|
|
56
|
927 r->header_hash = hash;
|
|
198
|
928 r->lowcase_index = i;
|
|
0
|
929
|
|
28
|
930 return NGX_OK;
|
|
|
931
|
|
|
932 header_done:
|
|
0
|
933
|
|
28
|
934 b->pos = p + 1;
|
|
|
935 r->state = sw_start;
|
|
|
936
|
|
|
937 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
938 }
|
|
|
939
|
|
|
940
|
|
58
|
941 ngx_int_t
|
|
342
|
942 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
943 {
|
|
|
944 u_char c, ch, decoded, *p, *u;
|
|
|
945 enum {
|
|
|
946 sw_usual = 0,
|
|
|
947 sw_slash,
|
|
|
948 sw_dot,
|
|
|
949 sw_dot_dot,
|
|
|
950 sw_quoted,
|
|
|
951 sw_quoted_second
|
|
|
952 } state, quoted_state;
|
|
|
953
|
|
28
|
954 #if (NGX_SUPPRESS_WARN)
|
|
0
|
955 decoded = '\0';
|
|
|
956 quoted_state = sw_usual;
|
|
28
|
957 #endif
|
|
0
|
958
|
|
|
959 state = sw_usual;
|
|
|
960 p = r->uri_start;
|
|
|
961 u = r->uri.data;
|
|
|
962 r->uri_ext = NULL;
|
|
10
|
963 r->args_start = NULL;
|
|
0
|
964
|
|
|
965 ch = *p++;
|
|
|
966
|
|
28
|
967 while (p <= r->uri_end) {
|
|
10
|
968
|
|
|
969 /*
|
|
28
|
970 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
971 * because after the URI there is always at least one charcter:
|
|
|
972 * the line feed
|
|
|
973 */
|
|
0
|
974
|
|
|
975 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
976 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
977
|
|
|
978 switch (state) {
|
|
122
|
979
|
|
0
|
980 case sw_usual:
|
|
254
|
981
|
|
|
982 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
983 *u++ = ch;
|
|
|
984 ch = *p++;
|
|
|
985 break;
|
|
|
986 }
|
|
|
987
|
|
0
|
988 switch(ch) {
|
|
10
|
989 #if (NGX_WIN32)
|
|
|
990 case '\\':
|
|
|
991 r->uri_ext = NULL;
|
|
|
992
|
|
|
993 if (p == r->uri_start + r->uri.len) {
|
|
|
994
|
|
|
995 /*
|
|
|
996 * we omit the last "\" to cause redirect because
|
|
|
997 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
998 */
|
|
|
999
|
|
|
1000 break;
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 state = sw_slash;
|
|
|
1004 *u++ = '/';
|
|
|
1005 break;
|
|
|
1006 #endif
|
|
0
|
1007 case '/':
|
|
|
1008 r->uri_ext = NULL;
|
|
|
1009 state = sw_slash;
|
|
|
1010 *u++ = ch;
|
|
|
1011 break;
|
|
|
1012 case '%':
|
|
|
1013 quoted_state = state;
|
|
|
1014 state = sw_quoted;
|
|
|
1015 break;
|
|
10
|
1016 case '?':
|
|
|
1017 r->args_start = p;
|
|
254
|
1018 goto args;
|
|
|
1019 case '#':
|
|
28
|
1020 goto done;
|
|
0
|
1021 case '.':
|
|
|
1022 r->uri_ext = u + 1;
|
|
22
|
1023 *u++ = ch;
|
|
|
1024 break;
|
|
206
|
1025 case '+':
|
|
|
1026 r->plus_in_uri = 1;
|
|
0
|
1027 default:
|
|
|
1028 *u++ = ch;
|
|
|
1029 break;
|
|
|
1030 }
|
|
254
|
1031
|
|
0
|
1032 ch = *p++;
|
|
|
1033 break;
|
|
|
1034
|
|
|
1035 case sw_slash:
|
|
254
|
1036
|
|
|
1037 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1038 state = sw_usual;
|
|
|
1039 *u++ = ch;
|
|
|
1040 ch = *p++;
|
|
|
1041 break;
|
|
|
1042 }
|
|
|
1043
|
|
0
|
1044 switch(ch) {
|
|
10
|
1045 #if (NGX_WIN32)
|
|
|
1046 case '\\':
|
|
342
|
1047 break;
|
|
10
|
1048 #endif
|
|
0
|
1049 case '/':
|
|
356
|
1050 if (!merge_slashes) {
|
|
342
|
1051 *u++ = ch;
|
|
|
1052 }
|
|
0
|
1053 break;
|
|
|
1054 case '.':
|
|
|
1055 state = sw_dot;
|
|
|
1056 *u++ = ch;
|
|
|
1057 break;
|
|
|
1058 case '%':
|
|
|
1059 quoted_state = state;
|
|
|
1060 state = sw_quoted;
|
|
|
1061 break;
|
|
28
|
1062 case '?':
|
|
|
1063 r->args_start = p;
|
|
254
|
1064 goto args;
|
|
|
1065 case '#':
|
|
28
|
1066 goto done;
|
|
206
|
1067 case '+':
|
|
|
1068 r->plus_in_uri = 1;
|
|
0
|
1069 default:
|
|
|
1070 state = sw_usual;
|
|
|
1071 *u++ = ch;
|
|
|
1072 break;
|
|
|
1073 }
|
|
254
|
1074
|
|
0
|
1075 ch = *p++;
|
|
|
1076 break;
|
|
|
1077
|
|
|
1078 case sw_dot:
|
|
254
|
1079
|
|
|
1080 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1081 state = sw_usual;
|
|
|
1082 *u++ = ch;
|
|
|
1083 ch = *p++;
|
|
|
1084 break;
|
|
|
1085 }
|
|
|
1086
|
|
0
|
1087 switch(ch) {
|
|
10
|
1088 #if (NGX_WIN32)
|
|
|
1089 case '\\':
|
|
|
1090 #endif
|
|
0
|
1091 case '/':
|
|
|
1092 state = sw_slash;
|
|
|
1093 u--;
|
|
|
1094 break;
|
|
|
1095 case '.':
|
|
|
1096 state = sw_dot_dot;
|
|
|
1097 *u++ = ch;
|
|
|
1098 break;
|
|
|
1099 case '%':
|
|
|
1100 quoted_state = state;
|
|
|
1101 state = sw_quoted;
|
|
|
1102 break;
|
|
28
|
1103 case '?':
|
|
|
1104 r->args_start = p;
|
|
254
|
1105 goto args;
|
|
|
1106 case '#':
|
|
28
|
1107 goto done;
|
|
206
|
1108 case '+':
|
|
|
1109 r->plus_in_uri = 1;
|
|
0
|
1110 default:
|
|
|
1111 state = sw_usual;
|
|
|
1112 *u++ = ch;
|
|
|
1113 break;
|
|
|
1114 }
|
|
254
|
1115
|
|
0
|
1116 ch = *p++;
|
|
|
1117 break;
|
|
|
1118
|
|
|
1119 case sw_dot_dot:
|
|
254
|
1120
|
|
|
1121 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1122 state = sw_usual;
|
|
|
1123 *u++ = ch;
|
|
|
1124 ch = *p++;
|
|
|
1125 break;
|
|
|
1126 }
|
|
|
1127
|
|
0
|
1128 switch(ch) {
|
|
10
|
1129 #if (NGX_WIN32)
|
|
|
1130 case '\\':
|
|
|
1131 #endif
|
|
0
|
1132 case '/':
|
|
|
1133 state = sw_slash;
|
|
526
|
1134 u -= 5;
|
|
|
1135 for ( ;; ) {
|
|
|
1136 if (u < r->uri.data) {
|
|
|
1137 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1138 }
|
|
|
1139 if (*u == '/') {
|
|
|
1140 u++;
|
|
|
1141 break;
|
|
|
1142 }
|
|
0
|
1143 u--;
|
|
|
1144 }
|
|
|
1145 break;
|
|
|
1146 case '%':
|
|
|
1147 quoted_state = state;
|
|
|
1148 state = sw_quoted;
|
|
|
1149 break;
|
|
28
|
1150 case '?':
|
|
|
1151 r->args_start = p;
|
|
254
|
1152 goto args;
|
|
|
1153 case '#':
|
|
28
|
1154 goto done;
|
|
206
|
1155 case '+':
|
|
|
1156 r->plus_in_uri = 1;
|
|
0
|
1157 default:
|
|
|
1158 state = sw_usual;
|
|
|
1159 *u++ = ch;
|
|
|
1160 break;
|
|
|
1161 }
|
|
254
|
1162
|
|
0
|
1163 ch = *p++;
|
|
|
1164 break;
|
|
|
1165
|
|
|
1166 case sw_quoted:
|
|
216
|
1167 r->quoted_uri = 1;
|
|
|
1168
|
|
0
|
1169 if (ch >= '0' && ch <= '9') {
|
|
|
1170 decoded = (u_char) (ch - '0');
|
|
|
1171 state = sw_quoted_second;
|
|
|
1172 ch = *p++;
|
|
|
1173 break;
|
|
|
1174 }
|
|
|
1175
|
|
|
1176 c = (u_char) (ch | 0x20);
|
|
|
1177 if (c >= 'a' && c <= 'f') {
|
|
|
1178 decoded = (u_char) (c - 'a' + 10);
|
|
|
1179 state = sw_quoted_second;
|
|
|
1180 ch = *p++;
|
|
|
1181 break;
|
|
|
1182 }
|
|
|
1183
|
|
|
1184 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1185
|
|
|
1186 case sw_quoted_second:
|
|
|
1187 if (ch >= '0' && ch <= '9') {
|
|
|
1188 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1189
|
|
0
|
1190 if (ch == '%') {
|
|
|
1191 state = sw_usual;
|
|
|
1192 *u++ = ch;
|
|
|
1193 ch = *p++;
|
|
|
1194 break;
|
|
|
1195 }
|
|
38
|
1196
|
|
254
|
1197 if (ch == '#') {
|
|
|
1198 *u++ = ch;
|
|
|
1199 ch = *p++;
|
|
|
1200
|
|
|
1201 } else if (ch == '\0') {
|
|
572
|
1202 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1203 }
|
|
|
1204
|
|
0
|
1205 state = quoted_state;
|
|
|
1206 break;
|
|
|
1207 }
|
|
|
1208
|
|
|
1209 c = (u_char) (ch | 0x20);
|
|
|
1210 if (c >= 'a' && c <= 'f') {
|
|
|
1211 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1212
|
|
28
|
1213 if (ch == '?') {
|
|
0
|
1214 *u++ = ch;
|
|
|
1215 ch = *p++;
|
|
206
|
1216
|
|
|
1217 } else if (ch == '+') {
|
|
|
1218 r->plus_in_uri = 1;
|
|
0
|
1219 }
|
|
206
|
1220
|
|
0
|
1221 state = quoted_state;
|
|
|
1222 break;
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1226 }
|
|
|
1227 }
|
|
|
1228
|
|
28
|
1229 done:
|
|
|
1230
|
|
0
|
1231 r->uri.len = u - r->uri.data;
|
|
254
|
1232
|
|
|
1233 if (r->uri_ext) {
|
|
|
1234 r->exten.len = u - r->uri_ext;
|
|
|
1235 r->exten.data = r->uri_ext;
|
|
|
1236 }
|
|
|
1237
|
|
|
1238 r->uri_ext = NULL;
|
|
|
1239
|
|
|
1240 return NGX_OK;
|
|
|
1241
|
|
|
1242 args:
|
|
|
1243
|
|
|
1244 while (p < r->uri_end) {
|
|
|
1245 if (*p++ != '#') {
|
|
|
1246 continue;
|
|
|
1247 }
|
|
|
1248
|
|
|
1249 r->args.len = p - 1 - r->args_start;
|
|
|
1250 r->args.data = r->args_start;
|
|
|
1251 r->args_start = NULL;
|
|
|
1252
|
|
|
1253 break;
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 r->uri.len = u - r->uri.data;
|
|
0
|
1257
|
|
|
1258 if (r->uri_ext) {
|
|
|
1259 r->exten.len = u - r->uri_ext;
|
|
10
|
1260 r->exten.data = r->uri_ext;
|
|
0
|
1261 }
|
|
|
1262
|
|
|
1263 r->uri_ext = NULL;
|
|
|
1264
|
|
|
1265 return NGX_OK;
|
|
|
1266 }
|
|
58
|
1267
|
|
|
1268
|
|
|
1269 ngx_int_t
|
|
122
|
1270 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1271 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1272 {
|
|
|
1273 u_char ch, *p;
|
|
|
1274 size_t len;
|
|
|
1275
|
|
|
1276 len = uri->len;
|
|
|
1277 p = uri->data;
|
|
|
1278
|
|
|
1279 if (len == 0 || p[0] == '?') {
|
|
|
1280 goto unsafe;
|
|
|
1281 }
|
|
|
1282
|
|
482
|
1283 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1284 goto unsafe;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 for ( /* void */ ; len; len--) {
|
|
|
1288
|
|
|
1289 ch = *p++;
|
|
|
1290
|
|
254
|
1291 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1292 continue;
|
|
|
1293 }
|
|
|
1294
|
|
122
|
1295 if (ch == '?') {
|
|
|
1296 args->len = len - 1;
|
|
|
1297 args->data = p;
|
|
|
1298 uri->len -= len;
|
|
|
1299
|
|
|
1300 return NGX_OK;
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 if (ch == '\0') {
|
|
572
|
1304 goto unsafe;
|
|
122
|
1305 }
|
|
|
1306
|
|
482
|
1307 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1308
|
|
122
|
1309 /* detect "/../" */
|
|
|
1310
|
|
482
|
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
|
|
530
|
1321 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1322 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1323 "unsafe URI \"%V\" was detected", uri);
|
|
|
1324 }
|
|
122
|
1325
|
|
|
1326 return NGX_ERROR;
|
|
|
1327 }
|
|
|
1328
|
|
|
1329
|
|
|
1330 ngx_int_t
|
|
58
|
1331 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1332 ngx_str_t *value)
|
|
|
1333 {
|
|
|
1334 ngx_uint_t i;
|
|
|
1335 u_char *start, *last, *end, ch;
|
|
|
1336 ngx_table_elt_t **h;
|
|
|
1337
|
|
|
1338 h = headers->elts;
|
|
|
1339
|
|
|
1340 for (i = 0; i < headers->nelts; i++) {
|
|
|
1341
|
|
|
1342 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1343 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1344
|
|
|
1345 if (name->len > h[i]->value.len) {
|
|
|
1346 continue;
|
|
|
1347 }
|
|
126
|
1348
|
|
58
|
1349 start = h[i]->value.data;
|
|
|
1350 end = h[i]->value.data + h[i]->value.len;
|
|
|
1351
|
|
|
1352 while (start < end) {
|
|
|
1353
|
|
|
1354 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1355 goto skip;
|
|
|
1356 }
|
|
|
1357
|
|
|
1358 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1359 /* void */
|
|
|
1360 }
|
|
|
1361
|
|
|
1362 if (value == NULL) {
|
|
|
1363 if (start == end || *start == ',') {
|
|
|
1364 return i;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 goto skip;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 if (start == end || *start++ != '=') {
|
|
|
1371 /* the invalid header value */
|
|
|
1372 goto skip;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 while (start < end && *start == ' ') { start++; }
|
|
|
1376
|
|
|
1377 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1378 /* void */
|
|
|
1379 }
|
|
|
1380
|
|
|
1381 value->len = last - start;
|
|
|
1382 value->data = start;
|
|
|
1383
|
|
|
1384 return i;
|
|
|
1385
|
|
|
1386 skip:
|
|
122
|
1387
|
|
58
|
1388 while (start < end) {
|
|
|
1389 ch = *start++;
|
|
|
1390 if (ch == ';' || ch == ',') {
|
|
|
1391 break;
|
|
|
1392 }
|
|
|
1393 }
|
|
|
1394
|
|
|
1395 while (start < end && *start == ' ') { start++; }
|
|
|
1396 }
|
|
|
1397 }
|
|
|
1398
|
|
|
1399 return NGX_DECLINED;
|
|
|
1400 }
|
|
432
|
1401
|
|
|
1402
|
|
|
1403 ngx_int_t
|
|
|
1404 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1405 {
|
|
472
|
1406 u_char *p, *last;
|
|
432
|
1407
|
|
|
1408 if (r->args.len == 0) {
|
|
|
1409 return NGX_DECLINED;
|
|
|
1410 }
|
|
|
1411
|
|
472
|
1412 p = r->args.data;
|
|
|
1413 last = p + r->args.len;
|
|
432
|
1414
|
|
472
|
1415 for ( /* void */ ; p < last; p++) {
|
|
432
|
1416
|
|
472
|
1417 /* we need '=' after name, so drop one char from last */
|
|
|
1418
|
|
|
1419 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1420
|
|
|
1421 if (p == NULL) {
|
|
|
1422 return NGX_DECLINED;
|
|
|
1423 }
|
|
|
1424
|
|
|
1425 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1426
|
|
|
1427 value->data = p + len + 1;
|
|
|
1428
|
|
472
|
1429 p = ngx_strlchr(p, last, '&');
|
|
432
|
1430
|
|
|
1431 if (p == NULL) {
|
|
|
1432 p = r->args.data + r->args.len;
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 value->len = p - value->data;
|
|
|
1436
|
|
|
1437 return NGX_OK;
|
|
|
1438 }
|
|
|
1439 }
|
|
|
1440
|
|
|
1441 return NGX_DECLINED;
|
|
|
1442 }
|
|
464
|
1443
|
|
|
1444
|
|
|
1445 void
|
|
|
1446 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1447 {
|
|
572
|
1448 u_char *p, *last;
|
|
464
|
1449
|
|
572
|
1450 last = uri->data + uri->len;
|
|
470
|
1451
|
|
572
|
1452 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1453
|
|
572
|
1454 if (p) {
|
|
|
1455 uri->len = p - uri->data;
|
|
|
1456 p++;
|
|
|
1457 args->len = last - p;
|
|
|
1458 args->data = p;
|
|
464
|
1459
|
|
572
|
1460 } else {
|
|
|
1461 args->len = 0;
|
|
464
|
1462 }
|
|
|
1463 }
|
