48
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10 #include <ngx_http.h>
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11
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12
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122
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13 static ngx_int_t ngx_http_variable_request(ngx_http_request_t *r,
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14 ngx_http_variable_value_t *v, uintptr_t data);
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15 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r,
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16 ngx_http_variable_value_t *v, uintptr_t data);
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17 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
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18 ngx_http_variable_value_t *v, uintptr_t data);
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126
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19
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20 static ngx_int_t ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
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122
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21 ngx_http_variable_value_t *v, uintptr_t data);
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126
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22 static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
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23 ngx_http_variable_value_t *v, uintptr_t data);
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24 static ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
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25 ngx_str_t *var, ngx_list_part_t *part, size_t prefix);
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26
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122
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27 static ngx_int_t ngx_http_variable_host(ngx_http_request_t *r,
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28 ngx_http_variable_value_t *v, uintptr_t data);
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29 static ngx_int_t ngx_http_variable_remote_addr(ngx_http_request_t *r,
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30 ngx_http_variable_value_t *v, uintptr_t data);
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31 static ngx_int_t ngx_http_variable_remote_port(ngx_http_request_t *r,
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32 ngx_http_variable_value_t *v, uintptr_t data);
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33 static ngx_int_t ngx_http_variable_server_addr(ngx_http_request_t *r,
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34 ngx_http_variable_value_t *v, uintptr_t data);
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35 static ngx_int_t ngx_http_variable_server_port(ngx_http_request_t *r,
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36 ngx_http_variable_value_t *v, uintptr_t data);
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37 static ngx_int_t ngx_http_variable_document_root(ngx_http_request_t *r,
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38 ngx_http_variable_value_t *v, uintptr_t data);
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39 static ngx_int_t ngx_http_variable_request_filename(ngx_http_request_t *r,
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40 ngx_http_variable_value_t *v, uintptr_t data);
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41 static ngx_int_t ngx_http_variable_request_method(ngx_http_request_t *r,
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42 ngx_http_variable_value_t *v, uintptr_t data);
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43 static ngx_int_t ngx_http_variable_remote_user(ngx_http_request_t *r,
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44 ngx_http_variable_value_t *v, uintptr_t data);
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48
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45
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46
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58
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47 /*
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48 * TODO:
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49 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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50 * REMOTE_HOST (null), REMOTE_IDENT (null),
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51 * SERVER_SOFTWARE
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52 *
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120
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53 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
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58
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54 */
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48
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55
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58
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56 static ngx_http_variable_t ngx_http_core_variables[] = {
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57
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58 { ngx_string("http_host"), ngx_http_variable_header,
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82
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59 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
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48
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60
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58
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61 { ngx_string("http_user_agent"), ngx_http_variable_header,
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82
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62 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
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58
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63
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64 { ngx_string("http_referer"), ngx_http_variable_header,
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82
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65 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
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48
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66
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67 #if (NGX_HTTP_GZIP)
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58
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68 { ngx_string("http_via"), ngx_http_variable_header,
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82
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69 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
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48
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70 #endif
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71
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72 #if (NGX_HTTP_PROXY)
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58
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73 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
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82
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74 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
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48
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75 #endif
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76
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64
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77 { ngx_string("http_cookie"), ngx_http_variable_headers,
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82
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78 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
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64
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79
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58
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80 { ngx_string("content_length"), ngx_http_variable_header,
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82
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81 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
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58
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82
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83 { ngx_string("content_type"), ngx_http_variable_header,
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82
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84 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
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58
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85
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82
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86 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 },
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58
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87
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82
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88 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 },
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48
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89
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82
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90 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 },
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58
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91
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82
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92 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 },
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58
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93
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82
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94 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 },
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58
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95
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96 { ngx_string("server_protocol"), ngx_http_variable_request,
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82
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97 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
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58
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98
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99 { ngx_string("request_uri"), ngx_http_variable_request,
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82
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100 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
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48
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101
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122
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102 { ngx_string("uri"), ngx_http_variable_request,
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103 offsetof(ngx_http_request_t, uri),
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104 NGX_HTTP_VAR_NOCACHABLE, 0 },
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105
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58
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106 { ngx_string("document_uri"), ngx_http_variable_request,
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122
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107 offsetof(ngx_http_request_t, uri),
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108 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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109
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118
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110 { ngx_string("request"), ngx_http_variable_request,
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111 offsetof(ngx_http_request_t, request_line), 0, 0 },
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112
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82
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113 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 },
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58
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114
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115 { ngx_string("query_string"), ngx_http_variable_request,
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116 offsetof(ngx_http_request_t, args),
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82
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117 NGX_HTTP_VAR_NOCACHABLE, 0 },
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48
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118
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58
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119 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
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82
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120 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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121
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122 { ngx_string("server_name"), ngx_http_variable_request,
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82
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123 offsetof(ngx_http_request_t, server_name), 0, 0 },
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58
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124
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110
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125 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 },
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58
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126
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88
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127 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 },
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58
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128
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82
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129 { ngx_null_string, NULL, 0, 0, 0 }
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48
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130 };
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131
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132
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126
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133 ngx_http_variable_value_t ngx_http_variable_null_value =
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134 ngx_http_variable("");
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135 ngx_http_variable_value_t ngx_http_variable_true_value =
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136 ngx_http_variable("1");
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137
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138
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48
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139 ngx_http_variable_t *
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58
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140 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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141 {
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142 ngx_uint_t i;
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143 ngx_http_variable_t *v;
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144 ngx_http_core_main_conf_t *cmcf;
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145
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146 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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147
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148 v = cmcf->all_variables.elts;
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149 for (i = 0; i < cmcf->all_variables.nelts; i++) {
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150 if (name->len != v[i].name.len
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151 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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152 {
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153 continue;
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154 }
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155
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156 if (!(v[i].flags & NGX_HTTP_VAR_CHANGABLE)) {
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157 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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158 "the duplicate \"%V\" variable", name);
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159 return NULL;
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160 }
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161
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162 return &v[i];
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163 }
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164
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165 v = ngx_array_push(&cmcf->all_variables);
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166 if (v == NULL) {
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167 return NULL;
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168 }
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169
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170 v->name.len = name->len;
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171 v->name.data = ngx_palloc(cf->pool, name->len);
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172 if (v->name.data == NULL) {
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173 return NULL;
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174 }
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175
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176 for (i = 0; i < name->len; i++) {
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177 v->name.data[i] = ngx_tolower(name->data[i]);
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178 }
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179
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180 v->handler = NULL;
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181 v->data = 0;
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182 v->flags = flags;
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82
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183 v->index = 0;
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58
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184
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185 return v;
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186 }
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187
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188
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189 ngx_int_t
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190 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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48
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191 {
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50
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192 ngx_uint_t i;
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193 ngx_http_variable_t *v;
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48
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194 ngx_http_core_main_conf_t *cmcf;
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195
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196 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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197
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50
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198 v = cmcf->variables.elts;
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199
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200 if (v == NULL) {
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48
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201 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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202 sizeof(ngx_http_variable_t)) == NGX_ERROR)
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203 {
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58
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204 return NGX_ERROR;
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48
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205 }
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50
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206
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207 } else {
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208 for (i = 0; i < cmcf->variables.nelts; i++) {
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209 if (name->len != v[i].name.len
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210 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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211 {
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212 continue;
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213 }
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214
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58
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215 return i;
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50
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216 }
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48
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217 }
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218
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50
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219 v = ngx_array_push(&cmcf->variables);
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220 if (v == NULL) {
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58
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221 return NGX_ERROR;
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48
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222 }
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223
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50
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224 v->name.len = name->len;
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225 v->name.data = ngx_palloc(cf->pool, name->len);
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226 if (v->name.data == NULL) {
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58
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227 return NGX_ERROR;
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50
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228 }
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48
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229
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50
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230 for (i = 0; i < name->len; i++) {
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58
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231 v->name.data[i] = ngx_tolower(name->data[i]);
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50
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232 }
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233
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234 v->handler = NULL;
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235 v->data = 0;
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58
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236 v->flags = 0;
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82
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237 v->index = cmcf->variables.nelts - 1;
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50
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238
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58
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239 return cmcf->variables.nelts - 1;
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48
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240 }
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241
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242
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243 ngx_http_variable_value_t *
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244 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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245 {
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50
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246 ngx_http_variable_t *v;
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48
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247 ngx_http_core_main_conf_t *cmcf;
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248
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249 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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250
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102
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251 if (cmcf->variables.nelts <= index) {
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48
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252 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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253 "unknown variable index: %d", index);
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254 return NULL;
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255 }
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256
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122
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257 if (r->variables[index].not_found || r->variables[index].valid) {
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258 return &r->variables[index];
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50
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259 }
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48
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260
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50
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261 v = cmcf->variables.elts;
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48
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262
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122
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263 if (v[index].handler(r, &r->variables[index], v[index].data) == NGX_OK) {
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48
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264
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122
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265 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
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266 r->variables[index].no_cachable = 1;
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48
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267 }
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122
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268
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269 return &r->variables[index];
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48
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270 }
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271
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122
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272 return NULL;
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273 }
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274
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275
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276 ngx_http_variable_value_t *
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277 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
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278 {
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279 ngx_http_variable_value_t *v;
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280
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281 v = &r->variables[index];
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282
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283 if (v->valid) {
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284 if (!v->no_cachable) {
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285 return v;
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286 }
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287
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288 v->valid = 0;
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289 v->not_found = 0;
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58
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290 }
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50
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291
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122
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292 return ngx_http_get_indexed_variable(r, index);
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48
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293 }
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294
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295
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296 ngx_http_variable_value_t *
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297 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name)
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298 {
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299 ngx_uint_t i, key;
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50
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300 ngx_http_variable_t *v;
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122
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301 ngx_http_variable_value_t *vv;
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48
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302 ngx_http_core_main_conf_t *cmcf;
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303
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304 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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305
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58
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306 key = 0;
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307 for (i = 0; i < name->len; i++) {
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308 key += name->data[i];
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48
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309 }
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310
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58
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311 key %= cmcf->variables_hash.hash_size;
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312 v = (ngx_http_variable_t *) cmcf->variables_hash.buckets;
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48
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313
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58
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314 if (v[key].name.len == name->len
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315 && ngx_strncmp(v[key].name.data, name->data, name->len) == 0)
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316 {
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68
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317 if (v[key].flags & NGX_HTTP_VAR_INDEXED) {
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82
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318 return ngx_http_get_indexed_variable(r, v[key].index);
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68
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319
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320 } else {
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48
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321
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122
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322 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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50
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323
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122
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324 if (vv && v[key].handler(r, vv, v[key].data) == NGX_OK) {
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325 return vv;
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326 }
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58
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327
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122
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328 return NULL;
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329 }
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58
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330 }
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331
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332 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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333 if (vv == NULL) {
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334 return NULL;
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335 }
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336
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122
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337 if (ngx_strncmp(name->data, "http_", 5) == 0) {
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48
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338
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126
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339 if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
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340 == NGX_OK)
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341 {
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342 return vv;
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343 }
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344
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345 return NULL;
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346 }
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347
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348 if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
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349
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350 if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
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351 == NGX_OK)
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122
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352 {
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353 return vv;
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354 }
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48
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355
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356 return NULL;
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357 }
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358
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122
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359 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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360 "unknown \"%V\" variable", name);
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361
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362 vv->not_found = 1;
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48
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363
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50
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364 return vv;
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48
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365 }
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366
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367
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122
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368 static ngx_int_t
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369 ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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370 uintptr_t data)
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371 {
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372 ngx_str_t *s;
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373
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374 s = (ngx_str_t *) ((char *) r + data);
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375
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376 if (s->data) {
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377 v->len = s->len;
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378 v->valid = 1;
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379 v->no_cachable = 0;
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380 v->not_found = 0;
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381 v->data = s->data;
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382
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383 } else {
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384 v->not_found = 1;
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385 }
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386
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387 return NGX_OK;
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388 }
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389
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390
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391 static ngx_int_t
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392 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
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393 uintptr_t data)
|
64
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394 {
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122
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395 ngx_table_elt_t *h;
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396
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397 h = *(ngx_table_elt_t **) ((char *) r + data);
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398
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399 if (h) {
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400 v->len = h->value.len;
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401 v->valid = 1;
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402 v->no_cachable = 0;
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403 v->not_found = 0;
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404 v->data = h->value.data;
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405
|
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406 } else {
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407 v->not_found = 1;
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408 }
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409
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410 return NGX_OK;
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411 }
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412
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413
|
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414 static ngx_int_t
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415 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
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416 uintptr_t data)
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417 {
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418 size_t len;
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419 u_char *p;
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420 ngx_uint_t i;
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421 ngx_array_t *a;
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422 ngx_table_elt_t **h;
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64
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423
|
|
424 a = (ngx_array_t *) ((char *) r + data);
|
|
425
|
|
426 if (a->nelts == 0) {
|
122
|
427 v->not_found = 1;
|
|
428 return NGX_OK;
|
64
|
429 }
|
|
430
|
122
|
431 v->valid = 1;
|
|
432 v->no_cachable = 0;
|
|
433 v->not_found = 0;
|
64
|
434
|
|
435 h = a->elts;
|
|
436
|
|
437 if (a->nelts == 1) {
|
122
|
438 v->len = (*h)->value.len;
|
|
439 v->data = (*h)->value.data;
|
64
|
440
|
122
|
441 return NGX_OK;
|
64
|
442 }
|
|
443
|
122
|
444 len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
445
|
|
446 for (i = 0; i < a->nelts; i++) {
|
|
447 len += h[i]->value.len + sizeof("; ") - 1;
|
64
|
448 }
|
|
449
|
122
|
450 p = ngx_palloc(r->pool, len);
|
|
451 if (p == NULL) {
|
|
452 return NGX_ERROR;
|
|
453 }
|
|
454
|
|
455 v->len = len;
|
|
456 v->data = p;
|
64
|
457
|
|
458 for (i = 0; /* void */ ; i++) {
|
122
|
459 p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
|
64
|
460
|
|
461 if (i == a->nelts - 1) {
|
|
462 break;
|
|
463 }
|
|
464
|
|
465 *p++ = ';'; *p++ = ' ';
|
|
466 }
|
|
467
|
122
|
468 return NGX_OK;
|
64
|
469 }
|
|
470
|
|
471
|
122
|
472 static ngx_int_t
|
126
|
473 ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
474 ngx_http_variable_value_t *v, uintptr_t data)
|
|
475 {
|
|
476 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
477 &r->headers_in.headers.part,
|
|
478 sizeof("http_") - 1);
|
|
479 }
|
|
480
|
|
481
|
|
482 static ngx_int_t
|
|
483 ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
122
|
484 ngx_http_variable_value_t *v, uintptr_t data)
|
48
|
485 {
|
126
|
486 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
487 &r->headers_out.headers.part,
|
|
488 sizeof("sent_http_") - 1);
|
|
489 }
|
50
|
490
|
126
|
491
|
|
492 static ngx_int_t
|
|
493 ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
|
|
494 ngx_list_part_t *part, size_t prefix)
|
|
495 {
|
122
|
496 u_char ch;
|
|
497 ngx_uint_t i, n;
|
|
498 ngx_table_elt_t *header;
|
48
|
499
|
|
500 header = part->elts;
|
|
501
|
|
502 for (i = 0; /* void */ ; i++) {
|
|
503
|
|
504 if (i >= part->nelts) {
|
|
505 if (part->next == NULL) {
|
|
506 break;
|
|
507 }
|
|
508
|
|
509 part = part->next;
|
|
510 header = part->elts;
|
|
511 i = 0;
|
|
512 }
|
|
513
|
126
|
514 for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
|
48
|
515 ch = header[i].key.data[n];
|
|
516
|
58
|
517 if (ch >= 'A' && ch <= 'Z') {
|
|
518 ch |= 0x20;
|
48
|
519
|
|
520 } else if (ch == '-') {
|
|
521 ch = '_';
|
|
522 }
|
|
523
|
126
|
524 if (var->data[n + prefix] != ch) {
|
48
|
525 break;
|
|
526 }
|
|
527 }
|
|
528
|
126
|
529 if (n + prefix == var->len) {
|
122
|
530 v->len = header[i].value.len;
|
|
531 v->valid = 1;
|
|
532 v->no_cachable = 0;
|
|
533 v->not_found = 0;
|
|
534 v->data = header[i].value.data;
|
48
|
535
|
122
|
536 return NGX_OK;
|
48
|
537 }
|
|
538 }
|
|
539
|
122
|
540 v->not_found = 1;
|
|
541
|
|
542 return NGX_OK;
|
58
|
543 }
|
|
544
|
|
545
|
122
|
546 static ngx_int_t
|
|
547 ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
548 uintptr_t data)
|
58
|
549 {
|
122
|
550 if (r->headers_in.host) {
|
|
551 v->len = r->headers_in.host_name_len;
|
|
552 v->data = r->headers_in.host->value.data;
|
58
|
553
|
122
|
554 } else {
|
|
555 v->len = r->server_name.len;
|
|
556 v->data = r->server_name.data;
|
58
|
557 }
|
|
558
|
122
|
559 v->valid = 1;
|
|
560 v->no_cachable = 0;
|
|
561 v->not_found = 0;
|
58
|
562
|
122
|
563 return NGX_OK;
|
48
|
564 }
|
|
565
|
|
566
|
122
|
567 static ngx_int_t
|
|
568 ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
569 ngx_http_variable_value_t *v, uintptr_t data)
|
48
|
570 {
|
122
|
571 v->len = r->connection->addr_text.len;
|
|
572 v->valid = 1;
|
|
573 v->no_cachable = 0;
|
|
574 v->not_found = 0;
|
|
575 v->data = r->connection->addr_text.data;
|
48
|
576
|
122
|
577 return NGX_OK;
|
48
|
578 }
|
|
579
|
|
580
|
122
|
581 static ngx_int_t
|
|
582 ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
583 ngx_http_variable_value_t *v, uintptr_t data)
|
48
|
584 {
|
122
|
585 ngx_uint_t port;
|
|
586 struct sockaddr_in *sin;
|
58
|
587
|
122
|
588 v->len = 0;
|
|
589 v->valid = 1;
|
|
590 v->no_cachable = 0;
|
|
591 v->not_found = 0;
|
58
|
592
|
122
|
593 v->data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
594 if (v->data == NULL) {
|
|
595 return NGX_ERROR;
|
58
|
596 }
|
|
597
|
|
598 /* AF_INET only */
|
126
|
599
|
58
|
600 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
601 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
126
|
602
|
58
|
603 port = ntohs(sin->sin_port);
|
126
|
604
|
58
|
605 if (port > 0 && port < 65536) {
|
122
|
606 v->len = ngx_sprintf(v->data, "%ui", port) - v->data;
|
58
|
607 }
|
|
608 }
|
|
609
|
122
|
610 return NGX_OK;
|
58
|
611 }
|
|
612
|
|
613
|
122
|
614 static ngx_int_t
|
|
615 ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
616 ngx_http_variable_value_t *v, uintptr_t data)
|
58
|
617 {
|
122
|
618 socklen_t len;
|
|
619 ngx_connection_t *c;
|
|
620 struct sockaddr_in sin;
|
48
|
621
|
122
|
622 v->data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
623 if (v->data == NULL) {
|
|
624 return NGX_ERROR;
|
58
|
625 }
|
|
626
|
|
627 c = r->connection;
|
|
628
|
|
629 if (r->in_addr == 0) {
|
|
630 len = sizeof(struct sockaddr_in);
|
|
631 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
632 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
633 ngx_socket_errno, "getsockname() failed");
|
122
|
634 return NGX_ERROR;
|
58
|
635 }
|
|
636
|
|
637 r->in_addr = sin.sin_addr.s_addr;
|
|
638 }
|
|
639
|
122
|
640 v->len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
641 v->data, INET_ADDRSTRLEN);
|
|
642 v->valid = 1;
|
|
643 v->no_cachable = 0;
|
|
644 v->not_found = 0;
|
48
|
645
|
122
|
646 return NGX_OK;
|
48
|
647 }
|
|
648
|
|
649
|
122
|
650 static ngx_int_t
|
|
651 ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
652 ngx_http_variable_value_t *v, uintptr_t data)
|
58
|
653 {
|
122
|
654 v->len = r->port_text->len - 1;
|
|
655 v->valid = 1;
|
|
656 v->no_cachable = 0;
|
|
657 v->not_found = 0;
|
|
658 v->data = r->port_text->data + 1;
|
58
|
659
|
122
|
660 return NGX_OK;
|
58
|
661 }
|
|
662
|
|
663
|
122
|
664 static ngx_int_t
|
|
665 ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
666 ngx_http_variable_value_t *v, uintptr_t data)
|
48
|
667 {
|
122
|
668 ngx_http_core_loc_conf_t *clcf;
|
58
|
669
|
|
670 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
671
|
122
|
672 v->len = clcf->root.len;
|
|
673 v->valid = 1;
|
|
674 v->no_cachable = 0;
|
|
675 v->not_found = 0;
|
|
676 v->data = clcf->root.data;
|
58
|
677
|
122
|
678 return NGX_OK;
|
58
|
679 }
|
|
680
|
|
681
|
122
|
682 static ngx_int_t
|
|
683 ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
684 ngx_http_variable_value_t *v, uintptr_t data)
|
58
|
685 {
|
122
|
686 ngx_str_t path;
|
48
|
687
|
122
|
688 if (ngx_http_map_uri_to_path(r, &path, 0) == NULL) {
|
|
689 return NGX_ERROR;
|
106
|
690 }
|
58
|
691
|
106
|
692 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
58
|
693
|
122
|
694 v->len = path.len - 1;
|
|
695 v->valid = 1;
|
|
696 v->no_cachable = 0;
|
|
697 v->not_found = 0;
|
|
698 v->data = path.data;
|
48
|
699
|
122
|
700 return NGX_OK;
|
48
|
701 }
|
|
702
|
|
703
|
122
|
704 static ngx_int_t
|
|
705 ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
706 ngx_http_variable_value_t *v, uintptr_t data)
|
110
|
707 {
|
122
|
708 if (r->method_name.data) {
|
|
709 if (r->upstream && r->upstream->method.len) {
|
|
710 v->len = r->upstream->method.len;
|
|
711 v->data = r->upstream->method.data;
|
110
|
712
|
122
|
713 } else {
|
|
714 v->len = r->method_name.len;
|
|
715 v->data = r->method_name.data;
|
|
716 }
|
|
717
|
|
718 v->valid = 1;
|
|
719 v->no_cachable = 0;
|
|
720 v->not_found = 0;
|
|
721
|
|
722 } else {
|
|
723 v->not_found = 1;
|
110
|
724 }
|
|
725
|
122
|
726 return NGX_OK;
|
110
|
727 }
|
|
728
|
|
729
|
122
|
730 static ngx_int_t
|
|
731 ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
732 ngx_http_variable_value_t *v, uintptr_t data)
|
88
|
733 {
|
122
|
734 ngx_int_t rc;
|
88
|
735
|
|
736 rc = ngx_http_auth_basic_user(r);
|
|
737
|
|
738 if (rc == NGX_DECLINED) {
|
122
|
739 v->not_found = 1;
|
|
740 return NGX_OK;
|
88
|
741 }
|
|
742
|
|
743 if (rc == NGX_ERROR) {
|
122
|
744 return NGX_ERROR;
|
88
|
745 }
|
|
746
|
122
|
747 v->len = r->headers_in.user.len;
|
|
748 v->valid = 1;
|
|
749 v->no_cachable = 0;
|
|
750 v->not_found = 0;
|
|
751 v->data = r->headers_in.user.data;
|
120
|
752
|
122
|
753 return NGX_OK;
|
120
|
754 }
|
|
755
|
|
756
|
48
|
757 ngx_int_t
|
58
|
758 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
48
|
759 {
|
58
|
760 ngx_http_variable_t *v, *cv;
|
50
|
761 ngx_http_core_main_conf_t *cmcf;
|
48
|
762
|
58
|
763 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
764
|
|
765 if (ngx_array_init(&cmcf->all_variables, cf->pool, 32,
|
118
|
766 sizeof(ngx_http_variable_t))
|
|
767 == NGX_ERROR)
|
58
|
768 {
|
48
|
769 return NGX_ERROR;
|
|
770 }
|
|
771
|
50
|
772 for (cv = ngx_http_core_variables; cv->name.len; cv++) {
|
58
|
773 v = ngx_array_push(&cmcf->all_variables);
|
|
774 if (v == NULL) {
|
48
|
775 return NGX_ERROR;
|
|
776 }
|
|
777
|
58
|
778 *v = *cv;
|
48
|
779 }
|
|
780
|
|
781 return NGX_OK;
|
|
782 }
|
58
|
783
|
|
784
|
|
785 ngx_int_t
|
|
786 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
787 {
|
|
788 ngx_uint_t i, n;
|
|
789 ngx_http_variable_t *v, *av;
|
|
790 ngx_http_core_main_conf_t *cmcf;
|
|
791
|
|
792 /* set the handlers for the indexed http variables */
|
|
793
|
|
794 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
795
|
|
796 v = cmcf->variables.elts;
|
|
797 av = cmcf->all_variables.elts;
|
|
798
|
|
799 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
800
|
|
801 for (n = 0; n < cmcf->all_variables.nelts; n++) {
|
|
802
|
|
803 if (v[i].name.len == av[n].name.len
|
|
804 && ngx_strncmp(v[i].name.data, av[n].name.data, v[i].name.len)
|
|
805 == 0)
|
|
806 {
|
|
807 v[i].handler = av[n].handler;
|
|
808 v[i].data = av[n].data;
|
76
|
809
|
|
810 av[n].flags |= NGX_HTTP_VAR_INDEXED;
|
|
811 v[i].flags = av[n].flags;
|
58
|
812
|
82
|
813 av[n].index = i;
|
|
814
|
58
|
815 goto next;
|
|
816 }
|
|
817 }
|
|
818
|
|
819 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
126
|
820 v[i].handler = ngx_http_variable_unknown_header_in;
|
|
821 v[i].data = (uintptr_t) &v[i].name;
|
|
822
|
|
823 continue;
|
|
824 }
|
|
825
|
|
826 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
|
|
827 v[i].handler = ngx_http_variable_unknown_header_out;
|
58
|
828 v[i].data = (uintptr_t) &v[i].name;
|
|
829
|
|
830 continue;
|
|
831 }
|
|
832
|
|
833 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
834 "unknown \"%V\" variable", &v[i].name);
|
|
835
|
|
836 return NGX_ERROR;
|
|
837
|
|
838 next:
|
|
839 continue;
|
|
840 }
|
|
841
|
|
842 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
843 "http variables: %ui", cmcf->variables.nelts);
|
|
844
|
|
845
|
|
846 /* init the all http variables hash */
|
|
847
|
|
848 cmcf->variables_hash.max_size = 500;
|
|
849 cmcf->variables_hash.bucket_limit = 1;
|
|
850 cmcf->variables_hash.bucket_size = sizeof(ngx_http_variable_t);
|
|
851 cmcf->variables_hash.name = "http variables";
|
|
852
|
|
853 if (ngx_hash_init(&cmcf->variables_hash, cf->pool,
|
130
|
854 cmcf->all_variables.elts, cmcf->all_variables.nelts)
|
|
855 != NGX_OK)
|
58
|
856 {
|
|
857 return NGX_ERROR;
|
|
858 }
|
|
859
|
|
860 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
861 "http variables hash size: %ui for %ui values, "
|
|
862 "max buckets per entry: %ui",
|
|
863 cmcf->variables_hash.hash_size, cmcf->all_variables.nelts,
|
|
864 cmcf->variables_hash.min_buckets);
|
|
865
|
|
866 return NGX_OK;
|
|
867 }
|