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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 '/':
|
|
|
546 r->uri_ext = NULL;
|
|
|
547 state = sw_after_slash_in_uri;
|
|
|
548 break;
|
|
|
549 case '.':
|
|
|
550 r->uri_ext = p + 1;
|
|
|
551 break;
|
|
|
552 case ' ':
|
|
|
553 r->uri_end = p;
|
|
578
|
554 state = sw_check_uri_http_09;
|
|
38
|
555 break;
|
|
0
|
556 case CR:
|
|
28
|
557 r->uri_end = p;
|
|
0
|
558 r->http_minor = 9;
|
|
|
559 state = sw_almost_done;
|
|
|
560 break;
|
|
|
561 case LF:
|
|
28
|
562 r->uri_end = p;
|
|
0
|
563 r->http_minor = 9;
|
|
28
|
564 goto done;
|
|
10
|
565 #if (NGX_WIN32)
|
|
|
566 case '\\':
|
|
|
567 r->complex_uri = 1;
|
|
|
568 state = sw_after_slash_in_uri;
|
|
|
569 break;
|
|
|
570 #endif
|
|
38
|
571 case '%':
|
|
|
572 r->quoted_uri = 1;
|
|
|
573 state = sw_uri;
|
|
0
|
574 break;
|
|
|
575 case '?':
|
|
28
|
576 r->args_start = p + 1;
|
|
0
|
577 state = sw_uri;
|
|
|
578 break;
|
|
254
|
579 case '#':
|
|
|
580 r->complex_uri = 1;
|
|
|
581 state = sw_uri;
|
|
|
582 break;
|
|
206
|
583 case '+':
|
|
|
584 r->plus_in_uri = 1;
|
|
|
585 break;
|
|
38
|
586 case '\0':
|
|
572
|
587 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
588 }
|
|
|
589 break;
|
|
|
590
|
|
578
|
591 /* space+ after URI */
|
|
|
592 case sw_check_uri_http_09:
|
|
|
593 switch (ch) {
|
|
|
594 case ' ':
|
|
|
595 break;
|
|
|
596 case CR:
|
|
|
597 r->http_minor = 9;
|
|
|
598 state = sw_almost_done;
|
|
|
599 break;
|
|
|
600 case LF:
|
|
|
601 r->http_minor = 9;
|
|
|
602 goto done;
|
|
|
603 case 'H':
|
|
|
604 r->http_protocol.data = p;
|
|
|
605 state = sw_http_H;
|
|
|
606 break;
|
|
|
607 default:
|
|
|
608 r->space_in_uri = 1;
|
|
|
609 state = sw_check_uri;
|
|
|
610 break;
|
|
|
611 }
|
|
|
612 break;
|
|
|
613
|
|
|
614
|
|
0
|
615 /* URI */
|
|
|
616 case sw_uri:
|
|
254
|
617
|
|
|
618 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
619 break;
|
|
|
620 }
|
|
|
621
|
|
0
|
622 switch (ch) {
|
|
38
|
623 case ' ':
|
|
|
624 r->uri_end = p;
|
|
|
625 state = sw_http_09;
|
|
|
626 break;
|
|
0
|
627 case CR:
|
|
28
|
628 r->uri_end = p;
|
|
0
|
629 r->http_minor = 9;
|
|
|
630 state = sw_almost_done;
|
|
|
631 break;
|
|
|
632 case LF:
|
|
28
|
633 r->uri_end = p;
|
|
0
|
634 r->http_minor = 9;
|
|
28
|
635 goto done;
|
|
254
|
636 case '#':
|
|
|
637 r->complex_uri = 1;
|
|
|
638 break;
|
|
38
|
639 case '\0':
|
|
572
|
640 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
641 }
|
|
|
642 break;
|
|
|
643
|
|
|
644 /* space+ after URI */
|
|
|
645 case sw_http_09:
|
|
|
646 switch (ch) {
|
|
|
647 case ' ':
|
|
|
648 break;
|
|
|
649 case CR:
|
|
|
650 r->http_minor = 9;
|
|
|
651 state = sw_almost_done;
|
|
|
652 break;
|
|
|
653 case LF:
|
|
|
654 r->http_minor = 9;
|
|
28
|
655 goto done;
|
|
0
|
656 case 'H':
|
|
28
|
657 r->http_protocol.data = p;
|
|
0
|
658 state = sw_http_H;
|
|
|
659 break;
|
|
|
660 default:
|
|
578
|
661 r->space_in_uri = 1;
|
|
|
662 state = sw_uri;
|
|
|
663 break;
|
|
0
|
664 }
|
|
|
665 break;
|
|
|
666
|
|
|
667 case sw_http_H:
|
|
|
668 switch (ch) {
|
|
|
669 case 'T':
|
|
|
670 state = sw_http_HT;
|
|
|
671 break;
|
|
|
672 default:
|
|
|
673 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
674 }
|
|
|
675 break;
|
|
|
676
|
|
|
677 case sw_http_HT:
|
|
|
678 switch (ch) {
|
|
|
679 case 'T':
|
|
|
680 state = sw_http_HTT;
|
|
|
681 break;
|
|
|
682 default:
|
|
|
683 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
684 }
|
|
|
685 break;
|
|
|
686
|
|
|
687 case sw_http_HTT:
|
|
|
688 switch (ch) {
|
|
|
689 case 'P':
|
|
|
690 state = sw_http_HTTP;
|
|
|
691 break;
|
|
|
692 default:
|
|
|
693 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
694 }
|
|
|
695 break;
|
|
|
696
|
|
|
697 case sw_http_HTTP:
|
|
|
698 switch (ch) {
|
|
|
699 case '/':
|
|
|
700 state = sw_first_major_digit;
|
|
|
701 break;
|
|
|
702 default:
|
|
|
703 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
704 }
|
|
|
705 break;
|
|
|
706
|
|
|
707 /* first digit of major HTTP version */
|
|
|
708 case sw_first_major_digit:
|
|
|
709 if (ch < '1' || ch > '9') {
|
|
|
710 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
711 }
|
|
|
712
|
|
|
713 r->http_major = ch - '0';
|
|
|
714 state = sw_major_digit;
|
|
|
715 break;
|
|
|
716
|
|
|
717 /* major HTTP version or dot */
|
|
|
718 case sw_major_digit:
|
|
|
719 if (ch == '.') {
|
|
|
720 state = sw_first_minor_digit;
|
|
|
721 break;
|
|
|
722 }
|
|
|
723
|
|
|
724 if (ch < '0' || ch > '9') {
|
|
|
725 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
726 }
|
|
|
727
|
|
|
728 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
729 break;
|
|
|
730
|
|
|
731 /* first digit of minor HTTP version */
|
|
|
732 case sw_first_minor_digit:
|
|
|
733 if (ch < '0' || ch > '9') {
|
|
|
734 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
735 }
|
|
|
736
|
|
|
737 r->http_minor = ch - '0';
|
|
|
738 state = sw_minor_digit;
|
|
|
739 break;
|
|
|
740
|
|
|
741 /* minor HTTP version or end of request line */
|
|
|
742 case sw_minor_digit:
|
|
|
743 if (ch == CR) {
|
|
|
744 state = sw_almost_done;
|
|
|
745 break;
|
|
|
746 }
|
|
|
747
|
|
|
748 if (ch == LF) {
|
|
28
|
749 goto done;
|
|
0
|
750 }
|
|
|
751
|
|
344
|
752 if (ch == ' ') {
|
|
|
753 state = sw_spaces_after_digit;
|
|
|
754 break;
|
|
|
755 }
|
|
|
756
|
|
0
|
757 if (ch < '0' || ch > '9') {
|
|
|
758 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
759 }
|
|
|
760
|
|
|
761 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
762 break;
|
|
|
763
|
|
344
|
764 case sw_spaces_after_digit:
|
|
|
765 switch (ch) {
|
|
|
766 case ' ':
|
|
|
767 break;
|
|
|
768 case CR:
|
|
|
769 state = sw_almost_done;
|
|
|
770 break;
|
|
|
771 case LF:
|
|
|
772 goto done;
|
|
|
773 default:
|
|
|
774 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
775 }
|
|
|
776 break;
|
|
|
777
|
|
0
|
778 /* end of request line */
|
|
|
779 case sw_almost_done:
|
|
28
|
780 r->request_end = p - 1;
|
|
0
|
781 switch (ch) {
|
|
|
782 case LF:
|
|
28
|
783 goto done;
|
|
0
|
784 default:
|
|
|
785 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
786 }
|
|
|
787 }
|
|
|
788 }
|
|
|
789
|
|
|
790 b->pos = p;
|
|
28
|
791 r->state = state;
|
|
0
|
792
|
|
28
|
793 return NGX_AGAIN;
|
|
0
|
794
|
|
28
|
795 done:
|
|
|
796
|
|
|
797 b->pos = p + 1;
|
|
0
|
798
|
|
28
|
799 if (r->request_end == NULL) {
|
|
|
800 r->request_end = p;
|
|
|
801 }
|
|
0
|
802
|
|
28
|
803 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
804 r->state = sw_start;
|
|
0
|
805
|
|
28
|
806 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
807 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
808 }
|
|
28
|
809
|
|
|
810 return NGX_OK;
|
|
0
|
811 }
|
|
|
812
|
|
|
813
|
|
58
|
814 ngx_int_t
|
|
412
|
815 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
816 ngx_uint_t allow_underscores)
|
|
0
|
817 {
|
|
56
|
818 u_char c, ch, *p;
|
|
198
|
819 ngx_uint_t hash, i;
|
|
0
|
820 enum {
|
|
|
821 sw_start = 0,
|
|
|
822 sw_name,
|
|
|
823 sw_space_before_value,
|
|
|
824 sw_value,
|
|
|
825 sw_space_after_value,
|
|
52
|
826 sw_ignore_line,
|
|
0
|
827 sw_almost_done,
|
|
52
|
828 sw_header_almost_done
|
|
0
|
829 } state;
|
|
|
830
|
|
250
|
831 /* the last '\0' is not needed because string is zero terminated */
|
|
|
832
|
|
198
|
833 static u_char lowcase[] =
|
|
|
834 "\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"
|
|
|
835 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
412
|
836 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
198
|
837 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
838 "\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"
|
|
|
839 "\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"
|
|
|
840 "\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"
|
|
|
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";
|
|
|
842
|
|
0
|
843 state = r->state;
|
|
56
|
844 hash = r->header_hash;
|
|
198
|
845 i = r->lowcase_index;
|
|
0
|
846
|
|
28
|
847 for (p = b->pos; p < b->last; p++) {
|
|
|
848 ch = *p;
|
|
0
|
849
|
|
|
850 switch (state) {
|
|
|
851
|
|
|
852 /* first char */
|
|
|
853 case sw_start:
|
|
524
|
854 r->header_name_start = p;
|
|
60
|
855 r->invalid_header = 0;
|
|
|
856
|
|
0
|
857 switch (ch) {
|
|
|
858 case CR:
|
|
28
|
859 r->header_end = p;
|
|
0
|
860 state = sw_header_almost_done;
|
|
|
861 break;
|
|
|
862 case LF:
|
|
28
|
863 r->header_end = p;
|
|
|
864 goto header_done;
|
|
0
|
865 default:
|
|
|
866 state = sw_name;
|
|
|
867
|
|
198
|
868 c = lowcase[ch];
|
|
0
|
869
|
|
198
|
870 if (c) {
|
|
|
871 hash = ngx_hash(0, c);
|
|
|
872 r->lowcase_header[0] = c;
|
|
|
873 i = 1;
|
|
0
|
874 break;
|
|
|
875 }
|
|
|
876
|
|
666
|
877 if (ch == '\0') {
|
|
|
878 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
879 }
|
|
|
880
|
|
60
|
881 r->invalid_header = 1;
|
|
|
882
|
|
52
|
883 break;
|
|
0
|
884
|
|
|
885 }
|
|
|
886 break;
|
|
|
887
|
|
|
888 /* header name */
|
|
|
889 case sw_name:
|
|
198
|
890 c = lowcase[ch];
|
|
|
891
|
|
|
892 if (c) {
|
|
|
893 hash = ngx_hash(hash, c);
|
|
|
894 r->lowcase_header[i++] = c;
|
|
370
|
895 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
0
|
896 break;
|
|
|
897 }
|
|
|
898
|
|
412
|
899 if (ch == '_') {
|
|
|
900 if (allow_underscores) {
|
|
|
901 hash = ngx_hash(hash, ch);
|
|
|
902 r->lowcase_header[i++] = ch;
|
|
|
903 i &= (NGX_HTTP_LC_HEADER_LEN - 1);
|
|
|
904
|
|
|
905 } else {
|
|
|
906 r->invalid_header = 1;
|
|
|
907 }
|
|
|
908
|
|
|
909 break;
|
|
|
910 }
|
|
|
911
|
|
0
|
912 if (ch == ':') {
|
|
28
|
913 r->header_name_end = p;
|
|
0
|
914 state = sw_space_before_value;
|
|
|
915 break;
|
|
|
916 }
|
|
|
917
|
|
58
|
918 if (ch == CR) {
|
|
|
919 r->header_name_end = p;
|
|
|
920 r->header_start = p;
|
|
|
921 r->header_end = p;
|
|
|
922 state = sw_almost_done;
|
|
|
923 break;
|
|
|
924 }
|
|
|
925
|
|
|
926 if (ch == LF) {
|
|
|
927 r->header_name_end = p;
|
|
|
928 r->header_start = p;
|
|
|
929 r->header_end = p;
|
|
|
930 goto done;
|
|
|
931 }
|
|
|
932
|
|
2
|
933 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
934 if (ch == '/'
|
|
58
|
935 && r->upstream
|
|
|
936 && p - r->header_name_start == 4
|
|
|
937 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
938 {
|
|
|
939 state = sw_ignore_line;
|
|
|
940 break;
|
|
|
941 }
|
|
|
942
|
|
666
|
943 if (ch == '\0') {
|
|
|
944 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
945 }
|
|
|
946
|
|
60
|
947 r->invalid_header = 1;
|
|
|
948
|
|
52
|
949 break;
|
|
0
|
950
|
|
|
951 /* space* before header value */
|
|
|
952 case sw_space_before_value:
|
|
|
953 switch (ch) {
|
|
|
954 case ' ':
|
|
|
955 break;
|
|
|
956 case CR:
|
|
58
|
957 r->header_start = p;
|
|
|
958 r->header_end = p;
|
|
0
|
959 state = sw_almost_done;
|
|
|
960 break;
|
|
|
961 case LF:
|
|
58
|
962 r->header_start = p;
|
|
|
963 r->header_end = p;
|
|
28
|
964 goto done;
|
|
666
|
965 case '\0':
|
|
|
966 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
967 default:
|
|
28
|
968 r->header_start = p;
|
|
0
|
969 state = sw_value;
|
|
|
970 break;
|
|
|
971 }
|
|
|
972 break;
|
|
|
973
|
|
|
974 /* header value */
|
|
|
975 case sw_value:
|
|
|
976 switch (ch) {
|
|
|
977 case ' ':
|
|
28
|
978 r->header_end = p;
|
|
0
|
979 state = sw_space_after_value;
|
|
|
980 break;
|
|
|
981 case CR:
|
|
28
|
982 r->header_end = p;
|
|
0
|
983 state = sw_almost_done;
|
|
|
984 break;
|
|
|
985 case LF:
|
|
28
|
986 r->header_end = p;
|
|
|
987 goto done;
|
|
666
|
988 case '\0':
|
|
|
989 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
990 }
|
|
|
991 break;
|
|
|
992
|
|
|
993 /* space* before end of header line */
|
|
|
994 case sw_space_after_value:
|
|
|
995 switch (ch) {
|
|
|
996 case ' ':
|
|
|
997 break;
|
|
|
998 case CR:
|
|
|
999 state = sw_almost_done;
|
|
|
1000 break;
|
|
|
1001 case LF:
|
|
28
|
1002 goto done;
|
|
666
|
1003 case '\0':
|
|
|
1004 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
0
|
1005 default:
|
|
|
1006 state = sw_value;
|
|
|
1007 break;
|
|
|
1008 }
|
|
|
1009 break;
|
|
|
1010
|
|
|
1011 /* ignore header line */
|
|
|
1012 case sw_ignore_line:
|
|
|
1013 switch (ch) {
|
|
|
1014 case LF:
|
|
|
1015 state = sw_start;
|
|
|
1016 break;
|
|
|
1017 default:
|
|
|
1018 break;
|
|
|
1019 }
|
|
|
1020 break;
|
|
|
1021
|
|
|
1022 /* end of header line */
|
|
|
1023 case sw_almost_done:
|
|
|
1024 switch (ch) {
|
|
370
|
1025 case LF:
|
|
|
1026 goto done;
|
|
172
|
1027 case CR:
|
|
|
1028 break;
|
|
0
|
1029 default:
|
|
|
1030 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1031 }
|
|
174
|
1032 break;
|
|
0
|
1033
|
|
|
1034 /* end of header */
|
|
|
1035 case sw_header_almost_done:
|
|
|
1036 switch (ch) {
|
|
|
1037 case LF:
|
|
28
|
1038 goto header_done;
|
|
0
|
1039 default:
|
|
|
1040 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
1041 }
|
|
|
1042 }
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 b->pos = p;
|
|
28
|
1046 r->state = state;
|
|
56
|
1047 r->header_hash = hash;
|
|
198
|
1048 r->lowcase_index = i;
|
|
0
|
1049
|
|
28
|
1050 return NGX_AGAIN;
|
|
|
1051
|
|
|
1052 done:
|
|
|
1053
|
|
|
1054 b->pos = p + 1;
|
|
|
1055 r->state = sw_start;
|
|
56
|
1056 r->header_hash = hash;
|
|
198
|
1057 r->lowcase_index = i;
|
|
0
|
1058
|
|
28
|
1059 return NGX_OK;
|
|
|
1060
|
|
|
1061 header_done:
|
|
0
|
1062
|
|
28
|
1063 b->pos = p + 1;
|
|
|
1064 r->state = sw_start;
|
|
|
1065
|
|
|
1066 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
1067 }
|
|
|
1068
|
|
|
1069
|
|
58
|
1070 ngx_int_t
|
|
342
|
1071 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
|
|
0
|
1072 {
|
|
|
1073 u_char c, ch, decoded, *p, *u;
|
|
|
1074 enum {
|
|
|
1075 sw_usual = 0,
|
|
|
1076 sw_slash,
|
|
|
1077 sw_dot,
|
|
|
1078 sw_dot_dot,
|
|
|
1079 sw_quoted,
|
|
|
1080 sw_quoted_second
|
|
|
1081 } state, quoted_state;
|
|
|
1082
|
|
28
|
1083 #if (NGX_SUPPRESS_WARN)
|
|
0
|
1084 decoded = '\0';
|
|
|
1085 quoted_state = sw_usual;
|
|
28
|
1086 #endif
|
|
0
|
1087
|
|
|
1088 state = sw_usual;
|
|
|
1089 p = r->uri_start;
|
|
|
1090 u = r->uri.data;
|
|
|
1091 r->uri_ext = NULL;
|
|
10
|
1092 r->args_start = NULL;
|
|
0
|
1093
|
|
|
1094 ch = *p++;
|
|
|
1095
|
|
28
|
1096 while (p <= r->uri_end) {
|
|
10
|
1097
|
|
|
1098 /*
|
|
28
|
1099 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
1100 * because after the URI there is always at least one charcter:
|
|
|
1101 * the line feed
|
|
|
1102 */
|
|
0
|
1103
|
|
|
1104 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1105 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
1106
|
|
|
1107 switch (state) {
|
|
122
|
1108
|
|
0
|
1109 case sw_usual:
|
|
254
|
1110
|
|
|
1111 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1112 *u++ = ch;
|
|
|
1113 ch = *p++;
|
|
|
1114 break;
|
|
|
1115 }
|
|
|
1116
|
|
0
|
1117 switch(ch) {
|
|
10
|
1118 #if (NGX_WIN32)
|
|
|
1119 case '\\':
|
|
|
1120 r->uri_ext = NULL;
|
|
|
1121
|
|
|
1122 if (p == r->uri_start + r->uri.len) {
|
|
|
1123
|
|
|
1124 /*
|
|
|
1125 * we omit the last "\" to cause redirect because
|
|
|
1126 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
1127 */
|
|
|
1128
|
|
|
1129 break;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 state = sw_slash;
|
|
|
1133 *u++ = '/';
|
|
|
1134 break;
|
|
|
1135 #endif
|
|
0
|
1136 case '/':
|
|
|
1137 r->uri_ext = NULL;
|
|
|
1138 state = sw_slash;
|
|
|
1139 *u++ = ch;
|
|
|
1140 break;
|
|
|
1141 case '%':
|
|
|
1142 quoted_state = state;
|
|
|
1143 state = sw_quoted;
|
|
|
1144 break;
|
|
10
|
1145 case '?':
|
|
|
1146 r->args_start = p;
|
|
254
|
1147 goto args;
|
|
|
1148 case '#':
|
|
28
|
1149 goto done;
|
|
0
|
1150 case '.':
|
|
|
1151 r->uri_ext = u + 1;
|
|
22
|
1152 *u++ = ch;
|
|
|
1153 break;
|
|
206
|
1154 case '+':
|
|
|
1155 r->plus_in_uri = 1;
|
|
0
|
1156 default:
|
|
|
1157 *u++ = ch;
|
|
|
1158 break;
|
|
|
1159 }
|
|
254
|
1160
|
|
0
|
1161 ch = *p++;
|
|
|
1162 break;
|
|
|
1163
|
|
|
1164 case sw_slash:
|
|
254
|
1165
|
|
|
1166 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1167 state = sw_usual;
|
|
|
1168 *u++ = ch;
|
|
|
1169 ch = *p++;
|
|
|
1170 break;
|
|
|
1171 }
|
|
|
1172
|
|
0
|
1173 switch(ch) {
|
|
10
|
1174 #if (NGX_WIN32)
|
|
|
1175 case '\\':
|
|
342
|
1176 break;
|
|
10
|
1177 #endif
|
|
0
|
1178 case '/':
|
|
356
|
1179 if (!merge_slashes) {
|
|
342
|
1180 *u++ = ch;
|
|
|
1181 }
|
|
0
|
1182 break;
|
|
|
1183 case '.':
|
|
|
1184 state = sw_dot;
|
|
|
1185 *u++ = ch;
|
|
|
1186 break;
|
|
|
1187 case '%':
|
|
|
1188 quoted_state = state;
|
|
|
1189 state = sw_quoted;
|
|
|
1190 break;
|
|
28
|
1191 case '?':
|
|
|
1192 r->args_start = p;
|
|
254
|
1193 goto args;
|
|
|
1194 case '#':
|
|
28
|
1195 goto done;
|
|
206
|
1196 case '+':
|
|
|
1197 r->plus_in_uri = 1;
|
|
0
|
1198 default:
|
|
|
1199 state = sw_usual;
|
|
|
1200 *u++ = ch;
|
|
|
1201 break;
|
|
|
1202 }
|
|
254
|
1203
|
|
0
|
1204 ch = *p++;
|
|
|
1205 break;
|
|
|
1206
|
|
|
1207 case sw_dot:
|
|
254
|
1208
|
|
|
1209 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1210 state = sw_usual;
|
|
|
1211 *u++ = ch;
|
|
|
1212 ch = *p++;
|
|
|
1213 break;
|
|
|
1214 }
|
|
|
1215
|
|
0
|
1216 switch(ch) {
|
|
10
|
1217 #if (NGX_WIN32)
|
|
|
1218 case '\\':
|
|
|
1219 #endif
|
|
0
|
1220 case '/':
|
|
|
1221 state = sw_slash;
|
|
|
1222 u--;
|
|
|
1223 break;
|
|
|
1224 case '.':
|
|
|
1225 state = sw_dot_dot;
|
|
|
1226 *u++ = ch;
|
|
|
1227 break;
|
|
|
1228 case '%':
|
|
|
1229 quoted_state = state;
|
|
|
1230 state = sw_quoted;
|
|
|
1231 break;
|
|
28
|
1232 case '?':
|
|
|
1233 r->args_start = p;
|
|
254
|
1234 goto args;
|
|
|
1235 case '#':
|
|
28
|
1236 goto done;
|
|
206
|
1237 case '+':
|
|
|
1238 r->plus_in_uri = 1;
|
|
0
|
1239 default:
|
|
|
1240 state = sw_usual;
|
|
|
1241 *u++ = ch;
|
|
|
1242 break;
|
|
|
1243 }
|
|
254
|
1244
|
|
0
|
1245 ch = *p++;
|
|
|
1246 break;
|
|
|
1247
|
|
|
1248 case sw_dot_dot:
|
|
254
|
1249
|
|
|
1250 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1251 state = sw_usual;
|
|
|
1252 *u++ = ch;
|
|
|
1253 ch = *p++;
|
|
|
1254 break;
|
|
|
1255 }
|
|
|
1256
|
|
0
|
1257 switch(ch) {
|
|
10
|
1258 #if (NGX_WIN32)
|
|
|
1259 case '\\':
|
|
|
1260 #endif
|
|
0
|
1261 case '/':
|
|
|
1262 state = sw_slash;
|
|
526
|
1263 u -= 5;
|
|
|
1264 for ( ;; ) {
|
|
|
1265 if (u < r->uri.data) {
|
|
|
1266 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1267 }
|
|
|
1268 if (*u == '/') {
|
|
|
1269 u++;
|
|
|
1270 break;
|
|
|
1271 }
|
|
0
|
1272 u--;
|
|
|
1273 }
|
|
|
1274 break;
|
|
|
1275 case '%':
|
|
|
1276 quoted_state = state;
|
|
|
1277 state = sw_quoted;
|
|
|
1278 break;
|
|
28
|
1279 case '?':
|
|
|
1280 r->args_start = p;
|
|
254
|
1281 goto args;
|
|
|
1282 case '#':
|
|
28
|
1283 goto done;
|
|
206
|
1284 case '+':
|
|
|
1285 r->plus_in_uri = 1;
|
|
0
|
1286 default:
|
|
|
1287 state = sw_usual;
|
|
|
1288 *u++ = ch;
|
|
|
1289 break;
|
|
|
1290 }
|
|
254
|
1291
|
|
0
|
1292 ch = *p++;
|
|
|
1293 break;
|
|
|
1294
|
|
|
1295 case sw_quoted:
|
|
216
|
1296 r->quoted_uri = 1;
|
|
|
1297
|
|
0
|
1298 if (ch >= '0' && ch <= '9') {
|
|
|
1299 decoded = (u_char) (ch - '0');
|
|
|
1300 state = sw_quoted_second;
|
|
|
1301 ch = *p++;
|
|
|
1302 break;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 c = (u_char) (ch | 0x20);
|
|
|
1306 if (c >= 'a' && c <= 'f') {
|
|
|
1307 decoded = (u_char) (c - 'a' + 10);
|
|
|
1308 state = sw_quoted_second;
|
|
|
1309 ch = *p++;
|
|
|
1310 break;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1314
|
|
|
1315 case sw_quoted_second:
|
|
|
1316 if (ch >= '0' && ch <= '9') {
|
|
|
1317 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1318
|
|
576
|
1319 if (ch == '%' || ch == '#') {
|
|
0
|
1320 state = sw_usual;
|
|
|
1321 *u++ = ch;
|
|
|
1322 ch = *p++;
|
|
|
1323 break;
|
|
254
|
1324
|
|
|
1325 } else if (ch == '\0') {
|
|
572
|
1326 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
38
|
1327 }
|
|
|
1328
|
|
0
|
1329 state = quoted_state;
|
|
|
1330 break;
|
|
|
1331 }
|
|
|
1332
|
|
|
1333 c = (u_char) (ch | 0x20);
|
|
|
1334 if (c >= 'a' && c <= 'f') {
|
|
|
1335 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1336
|
|
28
|
1337 if (ch == '?') {
|
|
576
|
1338 state = sw_usual;
|
|
0
|
1339 *u++ = ch;
|
|
|
1340 ch = *p++;
|
|
576
|
1341 break;
|
|
206
|
1342
|
|
|
1343 } else if (ch == '+') {
|
|
|
1344 r->plus_in_uri = 1;
|
|
0
|
1345 }
|
|
206
|
1346
|
|
0
|
1347 state = quoted_state;
|
|
|
1348 break;
|
|
|
1349 }
|
|
|
1350
|
|
|
1351 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1352 }
|
|
|
1353 }
|
|
|
1354
|
|
28
|
1355 done:
|
|
|
1356
|
|
0
|
1357 r->uri.len = u - r->uri.data;
|
|
254
|
1358
|
|
|
1359 if (r->uri_ext) {
|
|
|
1360 r->exten.len = u - r->uri_ext;
|
|
|
1361 r->exten.data = r->uri_ext;
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 r->uri_ext = NULL;
|
|
|
1365
|
|
|
1366 return NGX_OK;
|
|
|
1367
|
|
|
1368 args:
|
|
|
1369
|
|
|
1370 while (p < r->uri_end) {
|
|
|
1371 if (*p++ != '#') {
|
|
|
1372 continue;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 r->args.len = p - 1 - r->args_start;
|
|
|
1376 r->args.data = r->args_start;
|
|
|
1377 r->args_start = NULL;
|
|
|
1378
|
|
|
1379 break;
|
|
|
1380 }
|
|
|
1381
|
|
|
1382 r->uri.len = u - r->uri.data;
|
|
0
|
1383
|
|
|
1384 if (r->uri_ext) {
|
|
|
1385 r->exten.len = u - r->uri_ext;
|
|
10
|
1386 r->exten.data = r->uri_ext;
|
|
0
|
1387 }
|
|
|
1388
|
|
|
1389 r->uri_ext = NULL;
|
|
|
1390
|
|
|
1391 return NGX_OK;
|
|
|
1392 }
|
|
58
|
1393
|
|
|
1394
|
|
|
1395 ngx_int_t
|
|
580
|
1396 ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
|
|
|
1397 ngx_http_status_t *status)
|
|
|
1398 {
|
|
|
1399 u_char ch;
|
|
|
1400 u_char *p;
|
|
|
1401 enum {
|
|
|
1402 sw_start = 0,
|
|
|
1403 sw_H,
|
|
|
1404 sw_HT,
|
|
|
1405 sw_HTT,
|
|
|
1406 sw_HTTP,
|
|
|
1407 sw_first_major_digit,
|
|
|
1408 sw_major_digit,
|
|
|
1409 sw_first_minor_digit,
|
|
|
1410 sw_minor_digit,
|
|
|
1411 sw_status,
|
|
|
1412 sw_space_after_status,
|
|
|
1413 sw_status_text,
|
|
|
1414 sw_almost_done
|
|
|
1415 } state;
|
|
|
1416
|
|
|
1417 state = r->state;
|
|
|
1418
|
|
|
1419 for (p = b->pos; p < b->last; p++) {
|
|
|
1420 ch = *p;
|
|
|
1421
|
|
|
1422 switch (state) {
|
|
|
1423
|
|
|
1424 /* "HTTP/" */
|
|
|
1425 case sw_start:
|
|
|
1426 switch (ch) {
|
|
|
1427 case 'H':
|
|
|
1428 state = sw_H;
|
|
|
1429 break;
|
|
|
1430 default:
|
|
|
1431 return NGX_ERROR;
|
|
|
1432 }
|
|
|
1433 break;
|
|
|
1434
|
|
|
1435 case sw_H:
|
|
|
1436 switch (ch) {
|
|
|
1437 case 'T':
|
|
|
1438 state = sw_HT;
|
|
|
1439 break;
|
|
|
1440 default:
|
|
|
1441 return NGX_ERROR;
|
|
|
1442 }
|
|
|
1443 break;
|
|
|
1444
|
|
|
1445 case sw_HT:
|
|
|
1446 switch (ch) {
|
|
|
1447 case 'T':
|
|
|
1448 state = sw_HTT;
|
|
|
1449 break;
|
|
|
1450 default:
|
|
|
1451 return NGX_ERROR;
|
|
|
1452 }
|
|
|
1453 break;
|
|
|
1454
|
|
|
1455 case sw_HTT:
|
|
|
1456 switch (ch) {
|
|
|
1457 case 'P':
|
|
|
1458 state = sw_HTTP;
|
|
|
1459 break;
|
|
|
1460 default:
|
|
|
1461 return NGX_ERROR;
|
|
|
1462 }
|
|
|
1463 break;
|
|
|
1464
|
|
|
1465 case sw_HTTP:
|
|
|
1466 switch (ch) {
|
|
|
1467 case '/':
|
|
|
1468 state = sw_first_major_digit;
|
|
|
1469 break;
|
|
|
1470 default:
|
|
|
1471 return NGX_ERROR;
|
|
|
1472 }
|
|
|
1473 break;
|
|
|
1474
|
|
|
1475 /* the first digit of major HTTP version */
|
|
|
1476 case sw_first_major_digit:
|
|
|
1477 if (ch < '1' || ch > '9') {
|
|
|
1478 return NGX_ERROR;
|
|
|
1479 }
|
|
|
1480
|
|
640
|
1481 r->http_major = ch - '0';
|
|
580
|
1482 state = sw_major_digit;
|
|
|
1483 break;
|
|
|
1484
|
|
|
1485 /* the major HTTP version or dot */
|
|
|
1486 case sw_major_digit:
|
|
|
1487 if (ch == '.') {
|
|
|
1488 state = sw_first_minor_digit;
|
|
|
1489 break;
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 if (ch < '0' || ch > '9') {
|
|
|
1493 return NGX_ERROR;
|
|
|
1494 }
|
|
|
1495
|
|
640
|
1496 r->http_major = r->http_major * 10 + ch - '0';
|
|
580
|
1497 break;
|
|
|
1498
|
|
|
1499 /* the first digit of minor HTTP version */
|
|
|
1500 case sw_first_minor_digit:
|
|
|
1501 if (ch < '0' || ch > '9') {
|
|
|
1502 return NGX_ERROR;
|
|
|
1503 }
|
|
|
1504
|
|
640
|
1505 r->http_minor = ch - '0';
|
|
580
|
1506 state = sw_minor_digit;
|
|
|
1507 break;
|
|
|
1508
|
|
|
1509 /* the minor HTTP version or the end of the request line */
|
|
|
1510 case sw_minor_digit:
|
|
|
1511 if (ch == ' ') {
|
|
|
1512 state = sw_status;
|
|
|
1513 break;
|
|
|
1514 }
|
|
|
1515
|
|
|
1516 if (ch < '0' || ch > '9') {
|
|
|
1517 return NGX_ERROR;
|
|
|
1518 }
|
|
|
1519
|
|
640
|
1520 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
580
|
1521 break;
|
|
|
1522
|
|
|
1523 /* HTTP status code */
|
|
|
1524 case sw_status:
|
|
|
1525 if (ch == ' ') {
|
|
|
1526 break;
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 if (ch < '0' || ch > '9') {
|
|
|
1530 return NGX_ERROR;
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 status->code = status->code * 10 + ch - '0';
|
|
|
1534
|
|
|
1535 if (++status->count == 3) {
|
|
|
1536 state = sw_space_after_status;
|
|
|
1537 status->start = p - 2;
|
|
|
1538 }
|
|
|
1539
|
|
|
1540 break;
|
|
|
1541
|
|
|
1542 /* space or end of line */
|
|
|
1543 case sw_space_after_status:
|
|
|
1544 switch (ch) {
|
|
|
1545 case ' ':
|
|
|
1546 state = sw_status_text;
|
|
|
1547 break;
|
|
|
1548 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
|
1549 state = sw_status_text;
|
|
|
1550 break;
|
|
|
1551 case CR:
|
|
|
1552 state = sw_almost_done;
|
|
|
1553 break;
|
|
|
1554 case LF:
|
|
|
1555 goto done;
|
|
|
1556 default:
|
|
|
1557 return NGX_ERROR;
|
|
|
1558 }
|
|
|
1559 break;
|
|
|
1560
|
|
|
1561 /* any text until end of line */
|
|
|
1562 case sw_status_text:
|
|
|
1563 switch (ch) {
|
|
|
1564 case CR:
|
|
|
1565 state = sw_almost_done;
|
|
|
1566
|
|
|
1567 break;
|
|
|
1568 case LF:
|
|
|
1569 goto done;
|
|
|
1570 }
|
|
|
1571 break;
|
|
|
1572
|
|
|
1573 /* end of status line */
|
|
|
1574 case sw_almost_done:
|
|
|
1575 status->end = p - 1;
|
|
|
1576 switch (ch) {
|
|
|
1577 case LF:
|
|
|
1578 goto done;
|
|
|
1579 default:
|
|
|
1580 return NGX_ERROR;
|
|
|
1581 }
|
|
|
1582 }
|
|
|
1583 }
|
|
|
1584
|
|
|
1585 b->pos = p;
|
|
|
1586 r->state = state;
|
|
|
1587
|
|
|
1588 return NGX_AGAIN;
|
|
|
1589
|
|
|
1590 done:
|
|
|
1591
|
|
|
1592 b->pos = p + 1;
|
|
|
1593
|
|
|
1594 if (status->end == NULL) {
|
|
|
1595 status->end = p;
|
|
|
1596 }
|
|
|
1597
|
|
640
|
1598 status->http_version = r->http_major * 1000 + r->http_minor;
|
|
580
|
1599 r->state = sw_start;
|
|
|
1600
|
|
|
1601 return NGX_OK;
|
|
|
1602 }
|
|
|
1603
|
|
|
1604
|
|
|
1605 ngx_int_t
|
|
122
|
1606 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1607 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1608 {
|
|
|
1609 u_char ch, *p;
|
|
|
1610 size_t len;
|
|
|
1611
|
|
|
1612 len = uri->len;
|
|
|
1613 p = uri->data;
|
|
|
1614
|
|
|
1615 if (len == 0 || p[0] == '?') {
|
|
|
1616 goto unsafe;
|
|
|
1617 }
|
|
|
1618
|
|
482
|
1619 if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
|
|
122
|
1620 goto unsafe;
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 for ( /* void */ ; len; len--) {
|
|
|
1624
|
|
|
1625 ch = *p++;
|
|
|
1626
|
|
254
|
1627 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1628 continue;
|
|
|
1629 }
|
|
|
1630
|
|
122
|
1631 if (ch == '?') {
|
|
|
1632 args->len = len - 1;
|
|
|
1633 args->data = p;
|
|
|
1634 uri->len -= len;
|
|
|
1635
|
|
|
1636 return NGX_OK;
|
|
|
1637 }
|
|
|
1638
|
|
|
1639 if (ch == '\0') {
|
|
572
|
1640 goto unsafe;
|
|
122
|
1641 }
|
|
|
1642
|
|
482
|
1643 if (ngx_path_separator(ch) && len > 2) {
|
|
|
1644
|
|
122
|
1645 /* detect "/../" */
|
|
|
1646
|
|
482
|
1647 if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
|
|
122
|
1648 goto unsafe;
|
|
|
1649 }
|
|
|
1650 }
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 return NGX_OK;
|
|
|
1654
|
|
|
1655 unsafe:
|
|
|
1656
|
|
530
|
1657 if (*flags & NGX_HTTP_LOG_UNSAFE) {
|
|
|
1658 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1659 "unsafe URI \"%V\" was detected", uri);
|
|
|
1660 }
|
|
122
|
1661
|
|
|
1662 return NGX_ERROR;
|
|
|
1663 }
|
|
|
1664
|
|
|
1665
|
|
|
1666 ngx_int_t
|
|
58
|
1667 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1668 ngx_str_t *value)
|
|
|
1669 {
|
|
|
1670 ngx_uint_t i;
|
|
|
1671 u_char *start, *last, *end, ch;
|
|
|
1672 ngx_table_elt_t **h;
|
|
|
1673
|
|
|
1674 h = headers->elts;
|
|
|
1675
|
|
|
1676 for (i = 0; i < headers->nelts; i++) {
|
|
|
1677
|
|
|
1678 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1679 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1680
|
|
|
1681 if (name->len > h[i]->value.len) {
|
|
|
1682 continue;
|
|
|
1683 }
|
|
126
|
1684
|
|
58
|
1685 start = h[i]->value.data;
|
|
|
1686 end = h[i]->value.data + h[i]->value.len;
|
|
|
1687
|
|
|
1688 while (start < end) {
|
|
|
1689
|
|
|
1690 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1691 goto skip;
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1695 /* void */
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 if (value == NULL) {
|
|
|
1699 if (start == end || *start == ',') {
|
|
|
1700 return i;
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 goto skip;
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 if (start == end || *start++ != '=') {
|
|
|
1707 /* the invalid header value */
|
|
|
1708 goto skip;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 while (start < end && *start == ' ') { start++; }
|
|
|
1712
|
|
|
1713 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1714 /* void */
|
|
|
1715 }
|
|
|
1716
|
|
|
1717 value->len = last - start;
|
|
|
1718 value->data = start;
|
|
|
1719
|
|
|
1720 return i;
|
|
|
1721
|
|
|
1722 skip:
|
|
122
|
1723
|
|
58
|
1724 while (start < end) {
|
|
|
1725 ch = *start++;
|
|
|
1726 if (ch == ';' || ch == ',') {
|
|
|
1727 break;
|
|
|
1728 }
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 while (start < end && *start == ' ') { start++; }
|
|
|
1732 }
|
|
|
1733 }
|
|
|
1734
|
|
|
1735 return NGX_DECLINED;
|
|
|
1736 }
|
|
432
|
1737
|
|
|
1738
|
|
|
1739 ngx_int_t
|
|
|
1740 ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value)
|
|
|
1741 {
|
|
472
|
1742 u_char *p, *last;
|
|
432
|
1743
|
|
|
1744 if (r->args.len == 0) {
|
|
|
1745 return NGX_DECLINED;
|
|
|
1746 }
|
|
|
1747
|
|
472
|
1748 p = r->args.data;
|
|
|
1749 last = p + r->args.len;
|
|
432
|
1750
|
|
472
|
1751 for ( /* void */ ; p < last; p++) {
|
|
432
|
1752
|
|
472
|
1753 /* we need '=' after name, so drop one char from last */
|
|
|
1754
|
|
|
1755 p = ngx_strlcasestrn(p, last - 1, name, len - 1);
|
|
432
|
1756
|
|
|
1757 if (p == NULL) {
|
|
|
1758 return NGX_DECLINED;
|
|
|
1759 }
|
|
|
1760
|
|
|
1761 if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') {
|
|
|
1762
|
|
|
1763 value->data = p + len + 1;
|
|
|
1764
|
|
472
|
1765 p = ngx_strlchr(p, last, '&');
|
|
432
|
1766
|
|
|
1767 if (p == NULL) {
|
|
|
1768 p = r->args.data + r->args.len;
|
|
|
1769 }
|
|
|
1770
|
|
|
1771 value->len = p - value->data;
|
|
|
1772
|
|
|
1773 return NGX_OK;
|
|
|
1774 }
|
|
|
1775 }
|
|
|
1776
|
|
|
1777 return NGX_DECLINED;
|
|
|
1778 }
|
|
464
|
1779
|
|
|
1780
|
|
|
1781 void
|
|
|
1782 ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args)
|
|
|
1783 {
|
|
572
|
1784 u_char *p, *last;
|
|
464
|
1785
|
|
572
|
1786 last = uri->data + uri->len;
|
|
470
|
1787
|
|
572
|
1788 p = ngx_strlchr(uri->data, last, '?');
|
|
464
|
1789
|
|
572
|
1790 if (p) {
|
|
|
1791 uri->len = p - uri->data;
|
|
|
1792 p++;
|
|
|
1793 args->len = last - p;
|
|
|
1794 args->data = p;
|
|
464
|
1795
|
|
572
|
1796 } else {
|
|
|
1797 args->len = 0;
|
|
464
|
1798 }
|
|
|
1799 }
|
