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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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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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254
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13 static uint32_t usual[] = {
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14 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
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15
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16 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
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17 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
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18
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19 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
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20 #if (NGX_WIN32)
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21 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
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22 #else
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23 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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24 #endif
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25
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26 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
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27 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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28
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29 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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30 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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31 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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32 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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33 };
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34
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35
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300
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36 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
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37
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38 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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39 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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40
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41 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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42 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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43
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44 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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45 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
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46
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47 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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48 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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49 && m[4] == c4
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50
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51 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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52 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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53 && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
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54
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55 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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56 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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57 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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58
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59 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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60 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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61 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
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62
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63 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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64 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
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65 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
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66 && m[8] == c8
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67
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68 #else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
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69
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70 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
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71 m[0] == c0 && m[1] == c1 && m[2] == c2
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72
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73 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
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74 m[0] == c0 && m[2] == c2 && m[3] == c3
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75
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76 #define ngx_str4cmp(m, c0, c1, c2, c3) \
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77 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
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78
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79 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
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80 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
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81
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82 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
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83 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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84 && m[4] == c4 && m[5] == c5
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85
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86 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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87 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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88 && m[4] == c4 && m[5] == c5 && m[6] == c6
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89
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90 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
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91 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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92 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
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93
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94 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
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95 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
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96 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
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97
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98 #endif
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99
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100
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198
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101 /* gcc, icc, msvc and others compile these switches as an jump table */
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102
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58
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103 ngx_int_t
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104 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
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0
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105 {
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56
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106 u_char c, ch, *p, *m;
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0
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107 enum {
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108 sw_start = 0,
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109 sw_method,
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110 sw_spaces_before_uri,
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111 sw_schema,
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112 sw_schema_slash,
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113 sw_schema_slash_slash,
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650
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114 sw_host_start,
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0
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115 sw_host,
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650
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116 sw_host_end,
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117 sw_host_ip_literal,
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0
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118 sw_port,
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578
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119 sw_host_http_09,
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0
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120 sw_after_slash_in_uri,
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121 sw_check_uri,
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578
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122 sw_check_uri_http_09,
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0
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123 sw_uri,
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124 sw_http_09,
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125 sw_http_H,
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126 sw_http_HT,
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127 sw_http_HTT,
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128 sw_http_HTTP,
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129 sw_first_major_digit,
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130 sw_major_digit,
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131 sw_first_minor_digit,
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132 sw_minor_digit,
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344
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133 sw_spaces_after_digit,
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28
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134 sw_almost_done
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0
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135 } state;
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136
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137 state = r->state;
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138
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28
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139 for (p = b->pos; p < b->last; p++) {
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140 ch = *p;
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0
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141
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142 switch (state) {
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143
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144 /* HTTP methods: GET, HEAD, POST */
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145 case sw_start:
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28
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146 r->request_start = p;
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0
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147
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148 if (ch == CR || ch == LF) {
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149 break;
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150 }
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151
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506
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152 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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153 return NGX_HTTP_PARSE_INVALID_METHOD;
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154 }
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155
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156 state = sw_method;
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157 break;
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158
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159 case sw_method:
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160 if (ch == ' ') {
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58
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161 r->method_end = p - 1;
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0
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162 m = r->request_start;
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163
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188
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164 switch (p - m) {
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0
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165
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188
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166 case 3:
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300
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167 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
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0
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168 r->method = NGX_HTTP_GET;
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256
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169 break;
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170 }
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182
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171
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300
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172 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
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182
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173 r->method = NGX_HTTP_PUT;
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256
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174 break;
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0
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175 }
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256
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176
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188
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177 break;
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0
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178
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188
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179 case 4:
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256
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180 if (m[1] == 'O') {
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181
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300
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182 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
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256
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183 r->method = NGX_HTTP_POST;
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184 break;
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185 }
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186
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300
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187 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
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256
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188 r->method = NGX_HTTP_COPY;
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189 break;
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190 }
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0
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191
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300
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192 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
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256
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193 r->method = NGX_HTTP_MOVE;
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194 break;
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195 }
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196
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300
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197 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
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256
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198 r->method = NGX_HTTP_LOCK;
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199 break;
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200 }
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201
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202 } else {
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203
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300
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204 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
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256
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205 r->method = NGX_HTTP_HEAD;
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206 break;
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207 }
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0
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208 }
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256
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209
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188
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210 break;
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182
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211
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188
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212 case 5:
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300
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213 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
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186
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214 r->method = NGX_HTTP_MKCOL;
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215 }
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256
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216
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578
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217 if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) {
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218 r->method = NGX_HTTP_PATCH;
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219 }
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220
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300
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221 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
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294
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222 r->method = NGX_HTTP_TRACE;
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223 }
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224
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188
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225 break;
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186
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226
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188
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227 case 6:
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300
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228 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
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182
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229 r->method = NGX_HTTP_DELETE;
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256
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230 break;
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182
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231 }
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256
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232
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300
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233 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
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256
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234 r->method = NGX_HTTP_UNLOCK;
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235 break;
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236 }
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237
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238 break;
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239
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240 case 7:
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300
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241 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
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256
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242 {
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243 r->method = NGX_HTTP_OPTIONS;
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244 }
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245
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246 break;
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247
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248 case 8:
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300
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249 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
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256
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250 {
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251 r->method = NGX_HTTP_PROPFIND;
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252 }
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253
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254 break;
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255
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256 case 9:
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300
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257 if (ngx_str9cmp(m,
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258 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
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256
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259 {
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260 r->method = NGX_HTTP_PROPPATCH;
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261 }
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262
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188
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263 break;
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0
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264 }
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265
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266 state = sw_spaces_before_uri;
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267 break;
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268 }
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269
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506
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270 if ((ch < 'A' || ch > 'Z') && ch != '_') {
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0
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271 return NGX_HTTP_PARSE_INVALID_METHOD;
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272 }
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273
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274 break;
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275
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276 /* space* before URI */
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277 case sw_spaces_before_uri:
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56
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278
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582
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279 if (ch == '/') {
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254
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280 r->uri_start = p;
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281 state = sw_after_slash_in_uri;
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282 break;
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283 }
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284
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56
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285 c = (u_char) (ch | 0x20);
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70
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286 if (c >= 'a' && c <= 'z') {
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38
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287 r->schema_start = p;
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288 state = sw_schema;
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289 break;
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290 }
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291
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0
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292 switch (ch) {
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293 case ' ':
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294 break;
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295 default:
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296 return NGX_HTTP_PARSE_INVALID_REQUEST;
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297 }
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298 break;
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299
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300 case sw_schema:
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56
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301
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302 c = (u_char) (ch | 0x20);
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70
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303 if (c >= 'a' && c <= 'z') {
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38
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304 break;
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305 }
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306
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0
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307 switch (ch) {
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308 case ':':
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28
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309 r->schema_end = p;
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0
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310 state = sw_schema_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:
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318 switch (ch) {
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319 case '/':
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320 state = sw_schema_slash_slash;
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321 break;
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322 default:
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323 return NGX_HTTP_PARSE_INVALID_REQUEST;
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324 }
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325 break;
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326
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327 case sw_schema_slash_slash:
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328 switch (ch) {
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329 case '/':
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650
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330 state = sw_host_start;
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0
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331 break;
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332 default:
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333 return NGX_HTTP_PARSE_INVALID_REQUEST;
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334 }
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335 break;
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336
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650
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337 case sw_host_start:
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338
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339 r->host_start = p;
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340
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|
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341 if (ch == '[') {
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342 state = sw_host_ip_literal;
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343 break;
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344 }
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345
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346 state = sw_host;
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347
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|
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348 /* fall through */
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349
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0
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350 case sw_host:
|
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56
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351
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352 c = (u_char) (ch | 0x20);
|
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70
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353 if (c >= 'a' && c <= 'z') {
|
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56
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354 break;
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355 }
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356
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254
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357 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
|
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38
|
358 break;
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359 }
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360
|
|
650
|
361 /* fall through */
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362
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|
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363 case sw_host_end:
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364
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342
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365 r->host_end = p;
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366
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0
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367 switch (ch) {
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368 case ':':
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369 state = sw_port;
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370 break;
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371 case '/':
|
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28
|
372 r->uri_start = p;
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0
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373 state = sw_after_slash_in_uri;
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|
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374 break;
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342
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375 case ' ':
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376 /*
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|
|
377 * use single "/" from request line to preserve pointers,
|
|
|
378 * if request line will be copied to large client buffer
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379 */
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|
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380 r->uri_start = r->schema_end + 1;
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|
|
381 r->uri_end = r->schema_end + 2;
|
|
578
|
382 state = sw_host_http_09;
|
|
342
|
383 break;
|
|
0
|
384 default:
|
|
|
385 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
386 }
|
|
|
387 break;
|
|
|
388
|
|
650
|
389 case sw_host_ip_literal:
|
|
|
390
|
|
|
391 if (ch >= '0' && ch <= '9') {
|
|
|
392 break;
|
|
|
393 }
|
|
|
394
|
|
|
395 c = (u_char) (ch | 0x20);
|
|
|
396 if (c >= 'a' && c <= 'z') {
|
|
|
397 break;
|
|
|
398 }
|
|
|
399
|
|
|
400 switch (ch) {
|
|
|
401 case ':':
|
|
|
402 break;
|
|
|
403 case ']':
|
|
|
404 state = sw_host_end;
|
|
|
405 break;
|
|
|
406 case '-':
|
|
|
407 case '.':
|
|
|
408 case '_':
|
|
|
409 case '~':
|
|
|
410 /* unreserved */
|
|
|
411 break;
|
|
|
412 case '!':
|
|
|
413 case '$':
|
|
|
414 case '&':
|
|
|
415 case '\'':
|
|
|
416 case '(':
|
|
|
417 case ')':
|
|
|
418 case '*':
|
|
|
419 case '+':
|
|
|
420 case ',':
|
|
|
421 case ';':
|
|
|
422 case '=':
|
|
|
423 /* sub-delims */
|
|
|
424 break;
|
|
|
425 default:
|
|
|
426 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
427 }
|
|
|
428 break;
|
|
|
429
|
|
0
|
430 case sw_port:
|
|
38
|
431 if (ch >= '0' && ch <= '9') {
|
|
|
432 break;
|
|
|
433 }
|
|
|
434
|
|
0
|
435 switch (ch) {
|
|
|
436 case '/':
|
|
28
|
437 r->port_end = p;
|
|
|
438 r->uri_start = p;
|
|
0
|
439 state = sw_after_slash_in_uri;
|
|
|
440 break;
|
|
342
|
441 case ' ':
|
|
|
442 r->port_end = p;
|
|
|
443 /*
|
|
|
444 * use single "/" from request line to preserve pointers,
|
|
|
445 * if request line will be copied to large client buffer
|
|
|
446 */
|
|
|
447 r->uri_start = r->schema_end + 1;
|
|
|
448 r->uri_end = r->schema_end + 2;
|
|
578
|
449 state = sw_host_http_09;
|
|
342
|
450 break;
|
|
0
|
451 default:
|
|
38
|
452 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
453 }
|
|
|
454 break;
|
|
|
455
|
|
578
|
456 /* space+ after "http://host[:port] " */
|
|
|
457 case sw_host_http_09:
|
|
|
458 switch (ch) {
|
|
|
459 case ' ':
|
|
|
460 break;
|
|
|
461 case CR:
|
|
|
462 r->http_minor = 9;
|
|
|
463 state = sw_almost_done;
|
|
|
464 break;
|
|
|
465 case LF:
|
|
|
466 r->http_minor = 9;
|
|
|
467 goto done;
|
|
|
468 case 'H':
|
|
|
469 r->http_protocol.data = p;
|
|
|
470 state = sw_http_H;
|
|
|
471 break;
|
|
|
472 default:
|
|
|
473 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
474 }
|
|
|
475 break;
|
|
|
476
|
|
|
477
|
|
10
|
478 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
479 case sw_after_slash_in_uri:
|
|
38
|
480
|
|
254
|
481 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
482 state = sw_check_uri;
|
|
|
483 break;
|
|
|
484 }
|
|
|
485
|
|
0
|
486 switch (ch) {
|
|
38
|
487 case ' ':
|
|
|
488 r->uri_end = p;
|
|
578
|
489 state = sw_check_uri_http_09;
|
|
38
|
490 break;
|
|
0
|
491 case CR:
|
|
28
|
492 r->uri_end = p;
|
|
0
|
493 r->http_minor = 9;
|
|
|
494 state = sw_almost_done;
|
|
|
495 break;
|
|
|
496 case LF:
|
|
28
|
497 r->uri_end = p;
|
|
0
|
498 r->http_minor = 9;
|
|
28
|
499 goto done;
|
|
0
|
500 case '.':
|
|
2
|
501 r->complex_uri = 1;
|
|
|
502 state = sw_uri;
|
|
|
503 break;
|
|
0
|
504 case '%':
|
|
2
|
505 r->quoted_uri = 1;
|
|
0
|
506 state = sw_uri;
|
|
|
507 break;
|
|
38
|
508 case '/':
|
|
|
509 r->complex_uri = 1;
|
|
|
510 state = sw_uri;
|
|
|
511 break;
|
|
10
|
512 #if (NGX_WIN32)
|
|
|
513 case '\\':
|
|
|
514 r->complex_uri = 1;
|
|
38
|
515 state = sw_uri;
|
|
10
|
516 break;
|
|
|
517 #endif
|
|
38
|
518 case '?':
|
|
|
519 r->args_start = p + 1;
|
|
|
520 state = sw_uri;
|
|
0
|
521 break;
|
|
254
|
522 case '#':
|
|
|
523 r->complex_uri = 1;
|
|
|
524 state = sw_uri;
|
|
|
525 break;
|
|
34
|
526 case '+':
|
|
|
527 r->plus_in_uri = 1;
|
|
|
528 break;
|
|
38
|
529 case '\0':
|
|
572
|
530 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
531 default:
|
|
|
532 state = sw_check_uri;
|
|
|
533 break;
|
|
|
534 }
|
|
|
535 break;
|
|
|
536
|
|
10
|
537 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
538 case sw_check_uri:
|
|
38
|
539
|
|
254
|
540 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
541 break;
|
|
|
542 }
|
|
|
543
|
|
0
|
544 switch (ch) {
|
|
38
|
545 case '/':
|
|
676
|
546 #if (NGX_WIN32)
|
|
|
547 if (r->uri_ext == p) {
|
|
|
548 r->complex_uri = 1;
|
|
|
549 state = sw_uri;
|
|
|
550 break;
|
|
|
551 }
|
|
|
552 #endif
|
|
38
|
553 r->uri_ext = NULL;
|
|
|
554 state = sw_after_slash_in_uri;
|
|
|
555 break;
|
|
|
556 case '.':
|
|
|
557 r->uri_ext = p + 1;
|
|
|
558 break;
|
|
|
559 case ' ':
|
|
|
560 r->uri_end = p;
|
|
578
|
561 state = sw_check_uri_http_09;
|
|
38
|
562 break;
|
|
0
|
563 case CR:
|
|
28
|
564 r->uri_end = p;
|
|
0
|
565 r->http_minor = 9;
|
|
|
566 state = sw_almost_done;
|
|
|
567 break;
|
|
|
568 case LF:
|
|
28
|
569 r->uri_end = p;
|
|
0
|
570 r->http_minor = 9;
|
|
28
|
571 goto done;
|
|
10
|
572 #if (NGX_WIN32)
|
|
|
573 case '\\':
|
|
|
574 r->complex_uri = 1;
|
|
|
575 state = sw_after_slash_in_uri;
|
|
|
576 break;
|
|
|
577 #endif
|
|
38
|
578 case '%':
|
|
|
579 r->quoted_uri = 1;
|
|
|
580 state = sw_uri;
|
|
0
|
581 break;
|
|
|
582 case '?':
|
|
28
|
583 r->args_start = p + 1;
|
|
0
|
584 state = sw_uri;
|
|
|
585 break;
|
|
254
|
586 case '#':
|
|
|
587 r->complex_uri = 1;
|
|
|
588 state = sw_uri;
|
|
|
589 break;
|
|
206
|
590 case '+':
|
|
|
591 r->plus_in_uri = 1;
|
|
|
592 break;
|
|
38
|
593 case '\0':
|
|
572
|
594 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
595 }
|
|
|
596 break;
|
|
|
597
|
|
578
|
598 /* space+ after URI */
|
|
|
599 case sw_check_uri_http_09:
|
|
|
600 switch (ch) {
|
|
|
601 case ' ':
|
|
|
602 break;
|
|
|
603 case CR:
|
|
|
604 r->http_minor = 9;
|
|
|
605 state = sw_almost_done;
|
|
|
606 break;
|
|
|
607 case LF:
|
|
|
608 r->http_minor = 9;
|
|
|
609 goto done;
|
|
|
610 case 'H':
|
|
|
611 r->http_protocol.data = p;
|
|
|
612 state = sw_http_H;
|
|
|
613 break;
|
|
|
614 default:
|
|
|
615 r->space_in_uri = 1;
|
|
|
616 state = sw_check_uri;
|
|
|
617 break;
|
|
|
618 }
|
|
|
619 break;
|
|
|
620
|
|
|
621
|
|
0
|
622 /* URI */
|
|
|
623 case sw_uri:
|
|
254
|
624
|
|
|
625 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
626 break;
|
|
|
627 }
|
|
|
628
|
|
0
|
629 switch (ch) {
|
|
38
|
630 case ' ':
|
|
|
631 r->uri_end = p;
|
|
|
632 state = sw_http_09;
|
|
|
633 break;
|
|
0
|
634 case CR:
|
|
28
|
635 r->uri_end = p;
|
|
0
|
636 r->http_minor = 9;
|
|
|
637 state = sw_almost_done;
|
|
|
638 break;
|
|
|
639 case LF:
|
|
28
|
640 r->uri_end = p;
|
|
0
|
641 r->http_minor = 9;
|
|
28
|
642 goto done;
|
|
254
|
643 case '#':
|
|
|
644 r->complex_uri = 1;
|
|
|
645 break;
|
|
38
|
646 case '\0':
|
|
572
|
647 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
648 }
|
|
|
649 break;
|
|
|
650
|
|
|
651 /* space+ after URI */
|
|
|
652 case sw_http_09:
|
|
|
653 switch (ch) {
|
|
|
654 case ' ':
|
|
|
655 break;
|
|
|
656 case CR:
|
|
|
657 r->http_minor = 9;
|
|
|
658 state = sw_almost_done;
|
|
|
659 break;
|
|
|
660 case LF:
|
|
|
661 r->http_minor = 9;
|
|
28
|
662 goto done;
|
|
0
|
663 case 'H':
|
|
28
|
664 r->http_protocol.data = p;
|
|
0
|
665 state = sw_http_H;
|
|
|
666 break;
|
|
|
667 default:
|
|
578
|
668 r->space_in_uri = 1;
|
|
|
669 state = sw_uri;
|
|
|
670 break;
|
|
0
|
671 }
|
|
|
672 break;
|
|
|
673
|
|
|
674 case sw_http_H:
|
|
|
675 switch (ch) {
|
|
|
676 case 'T':
|
|
|
677 state = sw_http_HT;
|
|
|
678 break;
|
|
|
679 default:
|
|
|
680 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
681 }
|
|
|
682 break;
|
|
|
683
|
|
|
684 case sw_http_HT:
|
|
|
685 switch (ch) {
|
|
|
686 case 'T':
|
|
|
687 state = sw_http_HTT;
|
|
|
688 break;
|
|
|
689 default:
|
|
|
690 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
691 }
|
|
|
692 break;
|
|
|
693
|
|
|
694 case sw_http_HTT:
|
|
|
695 switch (ch) {
|
|
|
696 case 'P':
|
|
|
697 state = sw_http_HTTP;
|
|
|
698 break;
|
|
|
699 default:
|
|
|
700 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
701 }
|
|
|
702 break;
|
|
|
703
|
|
|
704 case sw_http_HTTP:
|
|
|
705 switch (ch) {
|
|
|
706 case '/':
|
|
|
707 state = sw_first_major_digit;
|
|
|
708 break;
|
|
|
709 default:
|
|
|
710 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
711 }
|
|
|
712 break;
|
|
|
713
|
|
|
714 /* first digit of major HTTP version */
|
|
|
715 case sw_first_major_digit:
|
|
|
716 if (ch < '1' || ch > '9') {
|
|
|
717 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
718 }
|
|
|
719
|
|
|
720 r->http_major = ch - '0';
|
|
|
721 state = sw_major_digit;
|
|
|
722 break;
|
|
|
723
|
|
|
724 /* major HTTP version or dot */
|
|
|
725 case sw_major_digit:
|
|
|
726 if (ch == '.') {
|
|
|
727 state = sw_first_minor_digit;
|
|
|
728 break;
|
|
|
729 }
|
|
|
730
|
|
|
731 if (ch < '0' || ch > '9') {
|
|
|
732 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
733 }
|
|
|
734
|
|
|
735 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
736 break;
|
|
|
737
|
|
|
738 /* first digit of minor HTTP version */
|
|
|
739 case sw_first_minor_digit:
|
|
|
740 if (ch < '0' || ch > '9') {
|
|
|
741 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
742 }
|
|
|
743
|
|
|
744 r->http_minor = ch - '0';
|
|
|
745 state = sw_minor_digit;
|
|
|
746 break;
|
|
|
747
|
|
|
748 /* minor HTTP version or end of request line */
|
|
|
749 case sw_minor_digit:
|
|
|
750 if (ch == CR) {
|
|
|
751 state = sw_almost_done;
|
|
|
752 break;
|
|
|
753 }
|
|
|
754
|
|
|
755 if (ch == LF) {
|
|
28
|
756 goto done;
|
|
0
|
757 }
|
|
|
758
|
|
344
|
759 if (ch == ' ') {
|
|
|
760 state = sw_spaces_after_digit;
|
|
|
761 break;
|
|
|
762 }
|
|
|
763
|
|
0
|
764 if (ch < '0' || ch > '9') {
|
|
|
765 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
766 }
|
|
|
767
|
|
|
768 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
769 break;
|
|
|
770
|
|
344
|
771 case sw_spaces_after_digit:
|
|
|
772 switch (ch) {
|
|
|
773 case ' ':
|
|
|
774 break;
|
|
|
775 case CR:
|
|
|
776 state = sw_almost_done;
|
|
|
777 break;
|
|
|
778 case LF:
|
|
|
779 goto done;
|
|
|
780 default:
|
|
|
781 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
782 }
|
|
|
783 break;
|
|
|
784
|
|
0
|
785 /* end of request line */
|
|
|
786 case sw_almost_done:
|
|
28
|
787 r->request_end = p - 1;
|
|
0
|
788 switch (ch) {
|
|
|
789 case LF:
|
|
28
|
790 goto done;
|
|
0
|
791 default:
|
|
|
792 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
793 }
|
|
|
794 }
|
|
|
795 }
|
|
|
796
|
|
|
797 b->pos = p;
|
|
28
|
798 r->state = state;
|
|
0
|
799
|
|
28
|
800 return NGX_AGAIN;
|
|
0
|
801
|
|
28
|
802 done:
|
|
|
803
|
|
|
804 b->pos = p + 1;
|
|
0
|
805
|
|
28
|
806 if (r->request_end == NULL) {
|
|
|
807 r->request_end = p;
|
|
|
808 }
|
|
0
|
809
|
|
28
|
810 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
811 r->state = sw_start;
|
|
0
|
812
|
|
28
|
813 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
814 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
815 }
|
|
28
|
816
|
|
|
817 return NGX_OK;
|
|
0
|
818 }
|
|
|
819
|
|
|
820
|
|
58
|
821 ngx_int_t
|
|
412
|
822 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
823 ngx_uint_t allow_underscores)
|
|
0
|
824 {
|
|
56
|
825 u_char c, ch, *p;
|
|
198
|
826 ngx_uint_t hash, i;
|
|
0
|
827 enum {
|
|
|
828 sw_start = 0,
|
|
|
829 sw_name,
|
|
|
830 sw_space_before_value,
|
|
|
831 sw_value,
|
|
|
832 sw_space_after_value,
|
|
52
|
833 sw_ignore_line,
|
|
0
|
834 sw_almost_done,
|
|
52
|
835 sw_header_almost_done
|
|
0
|
836 } state;
|
|
|
837
|
|
250
|
838 /* the last '\0' is not needed because string is zero terminated */
|
|
|
839
|
|
198
|
840 static u_char lowcase[] =
|
|
|
841 "\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"
|
|
|
842 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
843 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
844 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
845 "\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"
|
|
|
846 "\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"
|
|
|
847 "\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"
|
|
|
848 "\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";
|
|
|
849
|
|
0
|
850 state = r->state;
|
|
56
|
851 hash = r->header_hash;
|
|
198
|
852 i = r->lowcase_index;
|
|
0
|
853
|
|
28
|
854 for (p = b->pos; p < b->last; p++) {
|
|
|
855 ch = *p;
|
|
0
|
856
|
|
|
857 switch (state) {
|
|
|
858
|
|
|
859 /* first char */
|
|
|
860 case sw_start:
|
|
524
|
861 r->header_name_start = p;
|
|
60
|
862 r->invalid_header = 0;
|
|
|
863
|
|
0
|
864 switch (ch) {
|
|
|
865 case CR:
|
|
28
|
866 r->header_end = p;
|
|
0
|
867 state = sw_header_almost_done;
|
|
|
868 break;
|
|
|
869 case LF:
|
|
28
|
870 r->header_end = p;
|
|
|
871 goto header_done;
|
|
0
|
872 default:
|
|
|
873 state = sw_name;
|
|
|
874
|
|
198
|
875 c = lowcase[ch];
|
|
0
|
876
|
|
198
|
877 if (c) {
|
|
|
878 hash = ngx_hash(0, c);
|
|
|
879 r->lowcase_header[0] = c;
|
|
|
880 i = 1;
|
|
0
|
881 break;
|
|
|
882 }
|
|
|
883
|
|
666
|
884 if (ch == '\0') {
|
|
|
885 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
886 }
|
|
|
887
|
|
60
|
888 r->invalid_header = 1;
|
|
|
889
|
|
52
|
890 break;
|
|
0
|
891
|
|
|
892 }
|
|
|
893 break;
|
|
|
894
|
|
|
895 /* header name */
|
|
|
896 case sw_name:
|
|
198
|
897 c = lowcase[ch];
|
|
|
898
|
|
|
899 if (c) {
|
|
|
900 hash = ngx_hash(hash, c);
|
|
|
901 r->lowcase_header[i++] = c;
|
|
370
|
902 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
903 break;
|
|
|
904 }
|
|
|
905
|
|
412
|
906 if (ch == '_') {
|
|
|
907 if (allow_underscores) {
|
|
|
908 hash = ngx_hash(hash, ch);
|
|
|
909 r->lowcase_header[i++] = ch;
|
|
|
910 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
911
|
|
|
912 } else {
|
|
|
913 r->invalid_header = 1;
|
|
|
914 }
|
|
|
915
|
|
|
916 break;
|
|
|
917 }
|
|
|
918
|
|
0
|
919 if (ch == ':') {
|
|
28
|
920 r->header_name_end = p;
|
|
0
|
921 state = sw_space_before_value;
|
|
|
922 break;
|
|
|
923 }
|
|
|
924
|
|
58
|
925 if (ch == CR) {
|
|
|
926 r->header_name_end = p;
|
|
|
927 r->header_start = p;
|
|
|
928 r->header_end = p;
|
|
|
929 state = sw_almost_done;
|
|
|
930 break;
|
|
|
931 }
|
|
|
932
|
|
|
933 if (ch == LF) {
|
|
|
934 r->header_name_end = p;
|
|
|
935 r->header_start = p;
|
|
|
936 r->header_end = p;
|
|
|
937 goto done;
|
|
|
938 }
|
|
|
939
|
|
2
|
940 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
941 if (ch == '/'
|
|
58
|
942 && r->upstream
|
|
|
943 && p - r->header_name_start == 4
|
|
|
944 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
945 {
|
|
|
946 state = sw_ignore_line;
|
|
|
947 break;
|
|
|
948 }
|
|
|
949
|
|
666
|
950 if (ch == '\0') {
|
|
|
951 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
952 }
|
|
|
953
|
|
60
|
954 r->invalid_header = 1;
|
|
|
955
|
|
52
|
956 break;
|
|
0
|
957
|
|
|
958 /* space* before header value */
|
|
|
959 case sw_space_before_value:
|
|
|
960 switch (ch) {
|
|
|
961 case ' ':
|
|
|
962 break;
|
|
|
963 case CR:
|
|
58
|
964 r->header_start = p;
|
|
|
965 r->header_end = p;
|
|
0
|
966 state = sw_almost_done;
|
|
|
967 break;
|
|
|
968 case LF:
|
|
58
|
969 r->header_start = p;
|
|
|
970 r->header_end = p;
|
|
28
|
971 goto done;
|
|
666
|
972 case '\0':
|
|
|
973 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
974 default:
|
|
28
|
975 r->header_start = p;
|
|
0
|
976 state = sw_value;
|
|
|
977 break;
|
|
|
978 }
|
|
|
979 break;
|
|
|
980
|
|
|
981 /* header value */
|
|
|
982 case sw_value:
|
|
|
983 switch (ch) {
|
|
|
984 case ' ':
|
|
28
|
985 r->header_end = p;
|
|
0
|
986 state = sw_space_after_value;
|
|
|
987 break;
|
|
|
988 case CR:
|
|
28
|
989 r->header_end = p;
|
|
0
|
990 state = sw_almost_done;
|
|
|
991 break;
|
|
|
992 case LF:
|
|
28
|
993 r->header_end = p;
|
|
|
994 goto done;
|
|
666
|
995 case '\0':
|
|
|
996 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
997 }
|
|
|
998 break;
|
|
|
999
|
|
|
1000 /* space* before end of header line */
|
|
|
1001 case sw_space_after_value:
|
|
|
1002 switch (ch) {
|
|
|
1003 case ' ':
|
|
|
1004 break;
|
|
|
1005 case CR:
|
|
|
1006 state = sw_almost_done;
|
|
|
1007 break;
|
|
|
1008 case LF:
|
|
28
|
1009 goto done;
|
|
666
|
1010 case '\0':
|
|
|
1011 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
1012 default:
|
|
|
1013 state = sw_value;
|
|
|
1014 break;
|
|
|
1015 }
|
|
|
1016 break;
|
|
|
1017
|
|
|
1018 /* ignore header line */
|
|
|
1019 case sw_ignore_line:
|
|
|
1020 switch (ch) {
|
|
|
1021 case LF:
|
|
|
1022 state = sw_start;
|
|
|
1023 break;
|
|
|
1024 default:
|
|
|
1025 break;
|
|
|
1026 }
|
|
|
1027 break;
|
|
|
1028
|
|
|
1029 /* end of header line */
|
|
|
1030 case sw_almost_done:
|
|
|
1031 switch (ch) {
|
|
370
|
1032 case LF:
|
|
|
1033 goto done;
|
|
172
|
1034 case CR:
|
|
|
1035 break;
|
|
0
|
1036 default:
|
|
|
1037 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1038 }
|
|
174
|
1039 break;
|
|
0
|
1040
|
|
|
1041 /* end of header */
|
|
|
1042 case sw_header_almost_done:
|
|
|
1043 switch (ch) {
|
|
|
1044 case LF:
|
|
28
|
1045 goto header_done;
|
|
0
|
1046 default:
|
|
|
1047 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1048 }
|
|
|
1049 }
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 b->pos = p;
|
|
28
|
1053 r->state = state;
|
|
56
|
1054 r->header_hash = hash;
|
|
198
|
1055 r->lowcase_index = i;
|
|
0
|
1056
|
|
28
|
1057 return NGX_AGAIN;
|
|
|
1058
|
|
|
1059 done:
|
|
|
1060
|
|
|
1061 b->pos = p + 1;
|
|
|
1062 r->state = sw_start;
|
|
56
|
1063 r->header_hash = hash;
|
|
198
|
1064 r->lowcase_index = i;
|
|
0
|
1065
|
|
28
|
1066 return NGX_OK;
|
|
|
1067
|
|
|
1068 header_done:
|
|
0
|
1069
|
|
28
|
1070 b->pos = p + 1;
|
|
|
1071 r->state = sw_start;
|
|
|
1072
|
|
|
1073 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
1074 }
|
|
|
1075
|
|
|
1076
|
|
58
|
1077 ngx_int_t
|
|
342
|
1078 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
1079 {
|
|
|
1080 u_char c, ch, decoded, *p, *u;
|
|
|
1081 enum {
|
|
|
1082 sw_usual = 0,
|
|
|
1083 sw_slash,
|
|
|
1084 sw_dot,
|
|
|
1085 sw_dot_dot,
|
|
|
1086 sw_quoted,
|
|
|
1087 sw_quoted_second
|
|
|
1088 } state, quoted_state;
|
|
|
1089
|
|
28
|
1090 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1091 decoded = '\0';
|
|
|
1092 quoted_state = sw_usual;
|
|
28
|
1093 #endif
|
|
0
|
1094
|
|
|
1095 state = sw_usual;
|
|
|
1096 p = r->uri_start;
|
|
|
1097 u = r->uri.data;
|
|
|
1098 r->uri_ext = NULL;
|
|
10
|
1099 r->args_start = NULL;
|
|
0
|
1100
|
|
|
1101 ch = *p++;
|
|
|
1102
|
|
28
|
1103 while (p <= r->uri_end) {
|
|
10
|
1104
|
|
|
1105 /*
|
|
28
|
1106 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
670
|
1107 * because after the URI there is always at least one character:
|
|
10
|
1108 * the line feed
|
|
|
1109 */
|
|
0
|
1110
|
|
|
1111 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1112 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1113
|
|
|
1114 switch (state) {
|
|
122
|
1115
|
|
0
|
1116 case sw_usual:
|
|
254
|
1117
|
|
|
1118 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1119 *u++ = ch;
|
|
|
1120 ch = *p++;
|
|
|
1121 break;
|
|
|
1122 }
|
|
|
1123
|
|
0
|
1124 switch(ch) {
|
|
10
|
1125 #if (NGX_WIN32)
|
|
|
1126 case '\\':
|
|
676
|
1127 if (u - 2 >= r->uri.data
|
|
|
1128 && *(u - 1) == '.' && *(u - 2) != '.')
|
|
|
1129 {
|
|
|
1130 u--;
|
|
|
1131 }
|
|
|
1132
|
|
10
|
1133 r->uri_ext = NULL;
|
|
|
1134
|
|
|
1135 if (p == r->uri_start + r->uri.len) {
|
|
|
1136
|
|
|
1137 /*
|
|
|
1138 * we omit the last "\" to cause redirect because
|
|
|
1139 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1140 */
|
|
|
1141
|
|
|
1142 break;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 state = sw_slash;
|
|
|
1146 *u++ = '/';
|
|
|
1147 break;
|
|
|
1148 #endif
|
|
0
|
1149 case '/':
|
|
676
|
1150 #if (NGX_WIN32)
|
|
|
1151 if (u - 2 >= r->uri.data
|
|
|
1152 && *(u - 1) == '.' && *(u - 2) != '.')
|
|
|
1153 {
|
|
|
1154 u--;
|
|
|
1155 }
|
|
|
1156 #endif
|
|
0
|
1157 r->uri_ext = NULL;
|
|
|
1158 state = sw_slash;
|
|
|
1159 *u++ = ch;
|
|
|
1160 break;
|
|
|
1161 case '%':
|
|
|
1162 quoted_state = state;
|
|
|
1163 state = sw_quoted;
|
|
|
1164 break;
|
|
10
|
1165 case '?':
|
|
|
1166 r->args_start = p;
|
|
254
|
1167 goto args;
|
|
|
1168 case '#':
|
|
28
|
1169 goto done;
|
|
0
|
1170 case '.':
|
|
|
1171 r->uri_ext = u + 1;
|
|
22
|
1172 *u++ = ch;
|
|
|
1173 break;
|
|
206
|
1174 case '+':
|
|
|
1175 r->plus_in_uri = 1;
|
|
668
|
1176 /* fall through */
|
|
0
|
1177 default:
|
|
|
1178 *u++ = ch;
|
|
|
1179 break;
|
|
|
1180 }
|
|
254
|
1181
|
|
0
|
1182 ch = *p++;
|
|
|
1183 break;
|
|
|
1184
|
|
|
1185 case sw_slash:
|
|
254
|
1186
|
|
|
1187 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1188 state = sw_usual;
|
|
|
1189 *u++ = ch;
|
|
|
1190 ch = *p++;
|
|
|
1191 break;
|
|
|
1192 }
|
|
|
1193
|
|
0
|
1194 switch(ch) {
|
|
10
|
1195 #if (NGX_WIN32)
|
|
|
1196 case '\\':
|
|
342
|
1197 break;
|
|
10
|
1198 #endif
|
|
0
|
1199 case '/':
|
|
356
|
1200 if (!merge_slashes) {
|
|
342
|
1201 *u++ = ch;
|
|
|
1202 }
|
|
0
|
1203 break;
|
|
|
1204 case '.':
|
|
|
1205 state = sw_dot;
|
|
|
1206 *u++ = ch;
|
|
|
1207 break;
|
|
|
1208 case '%':
|
|
|
1209 quoted_state = state;
|
|
|
1210 state = sw_quoted;
|
|
|
1211 break;
|
|
28
|
1212 case '?':
|
|
|
1213 r->args_start = p;
|
|
254
|
1214 goto args;
|
|
|
1215 case '#':
|
|
28
|
1216 goto done;
|
|
206
|
1217 case '+':
|
|
|
1218 r->plus_in_uri = 1;
|
|
0
|
1219 default:
|
|
|
1220 state = sw_usual;
|
|
|
1221 *u++ = ch;
|
|
|
1222 break;
|
|
|
1223 }
|
|
254
|
1224
|
|
0
|
1225 ch = *p++;
|
|
|
1226 break;
|
|
|
1227
|
|
|
1228 case sw_dot:
|
|
254
|
1229
|
|
|
1230 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1231 state = sw_usual;
|
|
|
1232 *u++ = ch;
|
|
|
1233 ch = *p++;
|
|
|
1234 break;
|
|
|
1235 }
|
|
|
1236
|
|
0
|
1237 switch(ch) {
|
|
10
|
1238 #if (NGX_WIN32)
|
|
|
1239 case '\\':
|
|
|
1240 #endif
|
|
0
|
1241 case '/':
|
|
|
1242 state = sw_slash;
|
|
|
1243 u--;
|
|
|
1244 break;
|
|
|
1245 case '.':
|
|
|
1246 state = sw_dot_dot;
|
|
|
1247 *u++ = ch;
|
|
|
1248 break;
|
|
|
1249 case '%':
|
|
|
1250 quoted_state = state;
|
|
|
1251 state = sw_quoted;
|
|
|
1252 break;
|
|
28
|
1253 case '?':
|
|
|
1254 r->args_start = p;
|
|
254
|
1255 goto args;
|
|
|
1256 case '#':
|
|
28
|
1257 goto done;
|
|
206
|
1258 case '+':
|
|
|
1259 r->plus_in_uri = 1;
|
|
0
|
1260 default:
|
|
|
1261 state = sw_usual;
|
|
|
1262 *u++ = ch;
|
|
|
1263 break;
|
|
|
1264 }
|
|
254
|
1265
|
|
0
|
1266 ch = *p++;
|
|
|
1267 break;
|
|
|
1268
|
|
|
1269 case sw_dot_dot:
|
|
254
|
1270
|
|
|
1271 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1272 state = sw_usual;
|
|
|
1273 *u++ = ch;
|
|
|
1274 ch = *p++;
|
|
|
1275 break;
|
|
|
1276 }
|
|
|
1277
|
|
0
|
1278 switch(ch) {
|
|
10
|
1279 #if (NGX_WIN32)
|
|
|
1280 case '\\':
|
|
|
1281 #endif
|
|
0
|
1282 case '/':
|
|
|
1283 state = sw_slash;
|
|
526
|
1284 u -= 5;
|
|
|
1285 for ( ;; ) {
|
|
|
1286 if (u < r->uri.data) {
|
|
|
1287 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1288 }
|
|
|
1289 if (*u == '/') {
|
|
|
1290 u++;
|
|
|
1291 break;
|
|
|
1292 }
|
|
0
|
1293 u--;
|
|
|
1294 }
|
|
|
1295 break;
|
|
|
1296 case '%':
|
|
|
1297 quoted_state = state;
|
|
|
1298 state = sw_quoted;
|
|
|
1299 break;
|
|
28
|
1300 case '?':
|
|
|
1301 r->args_start = p;
|
|
254
|
1302 goto args;
|
|
|
1303 case '#':
|
|
28
|
1304 goto done;
|
|
206
|
1305 case '+':
|
|
|
1306 r->plus_in_uri = 1;
|
|
0
|
1307 default:
|
|
|
1308 state = sw_usual;
|
|
|
1309 *u++ = ch;
|
|
|
1310 break;
|
|
|
1311 }
|
|
254
|
1312
|
|
0
|
1313 ch = *p++;
|
|
|
1314 break;
|
|
|
1315
|
|
|
1316 case sw_quoted:
|
|
216
|
1317 r->quoted_uri = 1;
|
|
|
1318
|
|
0
|
1319 if (ch >= '0' && ch <= '9') {
|
|
|
1320 decoded = (u_char) (ch - '0');
|
|
|
1321 state = sw_quoted_second;
|
|
|
1322 ch = *p++;
|
|
|
1323 break;
|
|
|
1324 }
|
|
|
1325
|
|
|
1326 c = (u_char) (ch | 0x20);
|
|
|
1327 if (c >= 'a' && c <= 'f') {
|
|
|
1328 decoded = (u_char) (c - 'a' + 10);
|
|
|
1329 state = sw_quoted_second;
|
|
|
1330 ch = *p++;
|
|
|
1331 break;
|
|
|
1332 }
|
|
|
1333
|
|
|
1334 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1335
|
|
|
1336 case sw_quoted_second:
|
|
|
1337 if (ch >= '0' && ch <= '9') {
|
|
|
1338 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1339
|
|
576
|
1340 if (ch == '%' || ch == '#') {
|
|
0
|
1341 state = sw_usual;
|
|
|
1342 *u++ = ch;
|
|
|
1343 ch = *p++;
|
|
|
1344 break;
|
|
254
|
1345
|
|
|
1346 } else if (ch == '\0') {
|
|
572
|
1347 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1348 }
|
|
|
1349
|
|
0
|
1350 state = quoted_state;
|
|
|
1351 break;
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 c = (u_char) (ch | 0x20);
|
|
|
1355 if (c >= 'a' && c <= 'f') {
|
|
|
1356 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1357
|
|
28
|
1358 if (ch == '?') {
|
|
576
|
1359 state = sw_usual;
|
|
0
|
1360 *u++ = ch;
|
|
|
1361 ch = *p++;
|
|
576
|
1362 break;
|
|
206
|
1363
|
|
|
1364 } else if (ch == '+') {
|
|
|
1365 r->plus_in_uri = 1;
|
|
0
|
1366 }
|
|
206
|
1367
|
|
0
|
1368 state = quoted_state;
|
|
|
1369 break;
|
|
|
1370 }
|
|
|
1371
|
|
|
1372 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1373 }
|
|
|
1374 }
|
|
|
1375
|
|
28
|
1376 done:
|
|
|
1377
|
|
0
|
1378 r->uri.len = u - r->uri.data;
|
|
254
|
1379
|
|
|
1380 if (r->uri_ext) {
|
|
|
1381 r->exten.len = u - r->uri_ext;
|
|
|
1382 r->exten.data = r->uri_ext;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 r->uri_ext = NULL;
|
|
|
1386
|
|
|
1387 return NGX_OK;
|
|
|
1388
|
|
|
1389 args:
|
|
|
1390
|
|
|
1391 while (p < r->uri_end) {
|
|
|
1392 if (*p++ != '#') {
|
|
|
1393 continue;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 r->args.len = p - 1 - r->args_start;
|
|
|
1397 r->args.data = r->args_start;
|
|
|
1398 r->args_start = NULL;
|
|
|
1399
|
|
|
1400 break;
|
|
|
1401 }
|
|
|
1402
|
|
|
1403 r->uri.len = u - r->uri.data;
|
|
0
|
1404
|
|
|
1405 if (r->uri_ext) {
|
|
|
1406 r->exten.len = u - r->uri_ext;
|
|
10
|
1407 r->exten.data = r->uri_ext;
|
|
0
|
1408 }
|
|
|
1409
|
|
|
1410 r->uri_ext = NULL;
|
|
|
1411
|
|
|
1412 return NGX_OK;
|
|
|
1413 }
|
|
58
|
1414
|
|
|
1415
|
|
|
1416 ngx_int_t
|
|
580
|
1417 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1418 ngx_http_status_t *status)
|
|
|
1419 {
|
|
|
1420 u_char ch;
|
|
|
1421 u_char *p;
|
|
|
1422 enum {
|
|
|
1423 sw_start = 0,
|
|
|
1424 sw_H,
|
|
|
1425 sw_HT,
|
|
|
1426 sw_HTT,
|
|
|
1427 sw_HTTP,
|
|
|
1428 sw_first_major_digit,
|
|
|
1429 sw_major_digit,
|
|
|
1430 sw_first_minor_digit,
|
|
|
1431 sw_minor_digit,
|
|
|
1432 sw_status,
|
|
|
1433 sw_space_after_status,
|
|
|
1434 sw_status_text,
|
|
|
1435 sw_almost_done
|
|
|
1436 } state;
|
|
|
1437
|
|
|
1438 state = r->state;
|
|
|
1439
|
|
|
1440 for (p = b->pos; p < b->last; p++) {
|
|
|
1441 ch = *p;
|
|
|
1442
|
|
|
1443 switch (state) {
|
|
|
1444
|
|
|
1445 /* "HTTP/" */
|
|
|
1446 case sw_start:
|
|
|
1447 switch (ch) {
|
|
|
1448 case 'H':
|
|
|
1449 state = sw_H;
|
|
|
1450 break;
|
|
|
1451 default:
|
|
|
1452 return NGX_ERROR;
|
|
|
1453 }
|
|
|
1454 break;
|
|
|
1455
|
|
|
1456 case sw_H:
|
|
|
1457 switch (ch) {
|
|
|
1458 case 'T':
|
|
|
1459 state = sw_HT;
|
|
|
1460 break;
|
|
|
1461 default:
|
|
|
1462 return NGX_ERROR;
|
|
|
1463 }
|
|
|
1464 break;
|
|
|
1465
|
|
|
1466 case sw_HT:
|
|
|
1467 switch (ch) {
|
|
|
1468 case 'T':
|
|
|
1469 state = sw_HTT;
|
|
|
1470 break;
|
|
|
1471 default:
|
|
|
1472 return NGX_ERROR;
|
|
|
1473 }
|
|
|
1474 break;
|
|
|
1475
|
|
|
1476 case sw_HTT:
|
|
|
1477 switch (ch) {
|
|
|
1478 case 'P':
|
|
|
1479 state = sw_HTTP;
|
|
|
1480 break;
|
|
|
1481 default:
|
|
|
1482 return NGX_ERROR;
|
|
|
1483 }
|
|
|
1484 break;
|
|
|
1485
|
|
|
1486 case sw_HTTP:
|
|
|
1487 switch (ch) {
|
|
|
1488 case '/':
|
|
|
1489 state = sw_first_major_digit;
|
|
|
1490 break;
|
|
|
1491 default:
|
|
|
1492 return NGX_ERROR;
|
|
|
1493 }
|
|
|
1494 break;
|
|
|
1495
|
|
|
1496 /* the first digit of major HTTP version */
|
|
|
1497 case sw_first_major_digit:
|
|
|
1498 if (ch < '1' || ch > '9') {
|
|
|
1499 return NGX_ERROR;
|
|
|
1500 }
|
|
|
1501
|
|
640
|
1502 r->http_major = ch - '0';
|
|
580
|
1503 state = sw_major_digit;
|
|
|
1504 break;
|
|
|
1505
|
|
|
1506 /* the major HTTP version or dot */
|
|
|
1507 case sw_major_digit:
|
|
|
1508 if (ch == '.') {
|
|
|
1509 state = sw_first_minor_digit;
|
|
|
1510 break;
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 if (ch < '0' || ch > '9') {
|
|
|
1514 return NGX_ERROR;
|
|
|
1515 }
|
|
|
1516
|
|
640
|
1517 r->http_major = r->http_major * 10 + ch - '0';
|
|
580
|
1518 break;
|
|
|
1519
|
|
|
1520 /* the first digit of minor HTTP version */
|
|
|
1521 case sw_first_minor_digit:
|
|
|
1522 if (ch < '0' || ch > '9') {
|
|
|
1523 return NGX_ERROR;
|
|
|
1524 }
|
|
|
1525
|
|
640
|
1526 r->http_minor = ch - '0';
|
|
580
|
1527 state = sw_minor_digit;
|
|
|
1528 break;
|
|
|
1529
|
|
|
1530 /* the minor HTTP version or the end of the request line */
|
|
|
1531 case sw_minor_digit:
|
|
|
1532 if (ch == ' ') {
|
|
|
1533 state = sw_status;
|
|
|
1534 break;
|
|
|
1535 }
|
|
|
1536
|
|
|
1537 if (ch < '0' || ch > '9') {
|
|
|
1538 return NGX_ERROR;
|
|
|
1539 }
|
|
|
1540
|
|
640
|
1541 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
580
|
1542 break;
|
|
|
1543
|
|
|
1544 /* HTTP status code */
|
|
|
1545 case sw_status:
|
|
|
1546 if (ch == ' ') {
|
|
|
1547 break;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 if (ch < '0' || ch > '9') {
|
|
|
1551 return NGX_ERROR;
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 status->code = status->code * 10 + ch - '0';
|
|
|
1555
|
|
|
1556 if (++status->count == 3) {
|
|
|
1557 state = sw_space_after_status;
|
|
|
1558 status->start = p - 2;
|
|
|
1559 }
|
|
|
1560
|
|
|
1561 break;
|
|
|
1562
|
|
|
1563 /* space or end of line */
|
|
|
1564 case sw_space_after_status:
|
|
|
1565 switch (ch) {
|
|
|
1566 case ' ':
|
|
|
1567 state = sw_status_text;
|
|
|
1568 break;
|
|
|
1569 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1570 state = sw_status_text;
|
|
|
1571 break;
|
|
|
1572 case CR:
|
|
|
1573 state = sw_almost_done;
|
|
|
1574 break;
|
|
|
1575 case LF:
|
|
|
1576 goto done;
|
|
|
1577 default:
|
|
|
1578 return NGX_ERROR;
|
|
|
1579 }
|
|
|
1580 break;
|
|
|
1581
|
|
|
1582 /* any text until end of line */
|
|
|
1583 case sw_status_text:
|
|
|
1584 switch (ch) {
|
|
|
1585 case CR:
|
|
|
1586 state = sw_almost_done;
|
|
|
1587
|
|
|
1588 break;
|
|
|
1589 case LF:
|
|
|
1590 goto done;
|
|
|
1591 }
|
|
|
1592 break;
|
|
|
1593
|
|
|
1594 /* end of status line */
|
|
|
1595 case sw_almost_done:
|
|
|
1596 status->end = p - 1;
|
|
|
1597 switch (ch) {
|
|
|
1598 case LF:
|
|
|
1599 goto done;
|
|
|
1600 default:
|
|
|
1601 return NGX_ERROR;
|
|
|
1602 }
|
|
|
1603 }
|
|
|
1604 }
|
|
|
1605
|
|
|
1606 b->pos = p;
|
|
|
1607 r->state = state;
|
|
|
1608
|
|
|
1609 return NGX_AGAIN;
|
|
|
1610
|
|
|
1611 done:
|
|
|
1612
|
|
|
1613 b->pos = p + 1;
|
|
|
1614
|
|
|
1615 if (status->end == NULL) {
|
|
|
1616 status->end = p;
|
|
|
1617 }
|
|
|
1618
|
|
640
|
1619 status->http_version = r->http_major * 1000 + r->http_minor;
|
|
580
|
1620 r->state = sw_start;
|
|
|
1621
|
|
|
1622 return NGX_OK;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625
|
|
|
1626 ngx_int_t
|
|
122
|
1627 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1628 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1629 {
|
|
|
1630 u_char ch, *p;
|
|
|
1631 size_t len;
|
|
|
1632
|
|
|
1633 len = uri->len;
|
|
|
1634 p = uri->data;
|
|
|
1635
|
|
|
1636 if (len == 0 || p[0] == '?') {
|
|
|
1637 goto unsafe;
|
|
|
1638 }
|
|
|
1639
|
|
482
|
1640 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1641 goto unsafe;
|
|
|
1642 }
|
|
|
1643
|
|
|
1644 for ( /* void */ ; len; len--) {
|
|
|
1645
|
|
|
1646 ch = *p++;
|
|
|
1647
|
|
254
|
1648 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1649 continue;
|
|
|
1650 }
|
|
|
1651
|
|
122
|
1652 if (ch == '?') {
|
|
|
1653 args->len = len - 1;
|
|
|
1654 args->data = p;
|
|
|
1655 uri->len -= len;
|
|
|
1656
|
|
|
1657 return NGX_OK;
|
|
|
1658 }
|
|
|
1659
|
|
|
1660 if (ch == '\0') {
|
|
572
|
1661 goto unsafe;
|
|
122
|
1662 }
|
|
|
1663
|
|
482
|
1664 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1665
|
|
122
|
1666 /* detect "/../" */
|
|
|
1667
|
|
482
|
1668 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1669 goto unsafe;
|
|
|
1670 }
|
|
|
1671 }
|
|
|
1672 }
|
|
|
1673
|
|
|
1674 return NGX_OK;
|
|
|
1675
|
|
|
1676 unsafe:
|
|
|
1677
|
|
530
|
1678 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1679 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1680 "unsafe URI \"%V\" was detected", uri);
|
|
|
1681 }
|
|
122
|
1682
|
|
|
1683 return NGX_ERROR;
|
|
|
1684 }
|
|
|
1685
|
|
|
1686
|
|
|
1687 ngx_int_t
|
|
58
|
1688 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1689 ngx_str_t *value)
|
|
|
1690 {
|
|
|
1691 ngx_uint_t i;
|
|
|
1692 u_char *start, *last, *end, ch;
|
|
|
1693 ngx_table_elt_t **h;
|
|
|
1694
|
|
|
1695 h = headers->elts;
|
|
|
1696
|
|
|
1697 for (i = 0; i < headers->nelts; i++) {
|
|
|
1698
|
|
|
1699 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1700 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1701
|
|
|
1702 if (name->len > h[i]->value.len) {
|
|
|
1703 continue;
|
|
|
1704 }
|
|
126
|
1705
|
|
58
|
1706 start = h[i]->value.data;
|
|
|
1707 end = h[i]->value.data + h[i]->value.len;
|
|
|
1708
|
|
|
1709 while (start < end) {
|
|
|
1710
|
|
|
1711 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1712 goto skip;
|
|
|
1713 }
|
|
|
1714
|
|
|
1715 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1716 /* void */
|
|
|
1717 }
|
|
|
1718
|
|
|
1719 if (value == NULL) {
|
|
|
1720 if (start == end || *start == ',') {
|
|
|
1721 return i;
|
|
|
1722 }
|
|
|
1723
|
|
|
1724 goto skip;
|
|
|
1725 }
|
|
|
1726
|
|
|
1727 if (start == end || *start++ != '=') {
|
|
|
1728 /* the invalid header value */
|
|
|
1729 goto skip;
|
|
|
1730 }
|
|
|
1731
|
|
|
1732 while (start < end && *start == ' ') { start++; }
|
|
|
1733
|
|
|
1734 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1735 /* void */
|
|
|
1736 }
|
|
|
1737
|
|
|
1738 value->len = last - start;
|
|
|
1739 value->data = start;
|
|
|
1740
|
|
|
1741 return i;
|
|
|
1742
|
|
|
1743 skip:
|
|
122
|
1744
|
|
58
|
1745 while (start < end) {
|
|
|
1746 ch = *start++;
|
|
|
1747 if (ch == ';' || ch == ',') {
|
|
|
1748 break;
|
|
|
1749 }
|
|
|
1750 }
|
|
|
1751
|
|
|
1752 while (start < end && *start == ' ') { start++; }
|
|
|
1753 }
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 return NGX_DECLINED;
|
|
|
1757 }
|
|
432
|
1758
|
|
|
1759
|
|
|
1760 ngx_int_t
|
|
|
1761 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1762 {
|
|
472
|
1763 u_char *p, *last;
|
|
432
|
1764
|
|
|
1765 if (r->args.len == 0) {
|
|
|
1766 return NGX_DECLINED;
|
|
|
1767 }
|
|
|
1768
|
|
472
|
1769 p = r->args.data;
|
|
|
1770 last = p + r->args.len;
|
|
432
|
1771
|
|
472
|
1772 for ( /* void */ ; p < last; p++) {
|
|
432
|
1773
|
|
472
|
1774 /* we need '=' after name, so drop one char from last */
|
|
|
1775
|
|
|
1776 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1777
|
|
|
1778 if (p == NULL) {
|
|
|
1779 return NGX_DECLINED;
|
|
|
1780 }
|
|
|
1781
|
|
|
1782 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1783
|
|
|
1784 value->data = p + len + 1;
|
|
|
1785
|
|
472
|
1786 p = ngx_strlchr(p, last, '&');
|
|
432
|
1787
|
|
|
1788 if (p == NULL) {
|
|
|
1789 p = r->args.data + r->args.len;
|
|
|
1790 }
|
|
|
1791
|
|
|
1792 value->len = p - value->data;
|
|
|
1793
|
|
|
1794 return NGX_OK;
|
|
|
1795 }
|
|
|
1796 }
|
|
|
1797
|
|
|
1798 return NGX_DECLINED;
|
|
|
1799 }
|
|
464
|
1800
|
|
|
1801
|
|
|
1802 void
|
|
|
1803 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1804 {
|
|
572
|
1805 u_char *p, *last;
|
|
464
|
1806
|
|
572
|
1807 last = uri->data + uri->len;
|
|
470
|
1808
|
|
572
|
1809 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1810
|
|
572
|
1811 if (p) {
|
|
|
1812 uri->len = p - uri->data;
|
|
|
1813 p++;
|
|
|
1814 args->len = last - p;
|
|
|
1815 args->data = p;
|
|
464
|
1816
|
|
572
|
1817 } else {
|
|
|
1818 args->len = 0;
|
|
464
|
1819 }
|
|
|
1820 }
|
