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499
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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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573
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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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577
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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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573
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21 ngx_http_variable_value_t *v, uintptr_t data);
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577
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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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573
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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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611
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45 static ngx_int_t ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
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46 ngx_http_variable_value_t *v, uintptr_t data);
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499
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47
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48
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509
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49 /*
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50 * TODO:
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51 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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52 * REMOTE_HOST (null), REMOTE_IDENT (null),
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53 * SERVER_SOFTWARE
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54 *
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571
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55 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
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509
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56 */
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499
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57
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509
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58 static ngx_http_variable_t ngx_http_core_variables[] = {
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59
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60 { ngx_string("http_host"), ngx_http_variable_header,
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533
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61 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
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499
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62
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509
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63 { ngx_string("http_user_agent"), ngx_http_variable_header,
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533
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64 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
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509
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65
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66 { ngx_string("http_referer"), ngx_http_variable_header,
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533
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67 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
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499
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68
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69 #if (NGX_HTTP_GZIP)
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509
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70 { ngx_string("http_via"), ngx_http_variable_header,
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533
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71 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
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499
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72 #endif
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73
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74 #if (NGX_HTTP_PROXY)
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509
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75 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
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533
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76 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
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499
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77 #endif
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78
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515
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79 { ngx_string("http_cookie"), ngx_http_variable_headers,
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533
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80 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
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515
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81
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509
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82 { ngx_string("content_length"), ngx_http_variable_header,
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533
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83 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
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509
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84
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85 { ngx_string("content_type"), ngx_http_variable_header,
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533
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86 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
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509
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87
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533
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88 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 },
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509
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89
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533
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90 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 },
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499
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91
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533
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92 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 },
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509
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93
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533
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94 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 },
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509
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95
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533
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96 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 },
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509
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97
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98 { ngx_string("server_protocol"), ngx_http_variable_request,
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533
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99 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
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509
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100
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101 { ngx_string("request_uri"), ngx_http_variable_request,
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533
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102 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
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499
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103
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573
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104 { ngx_string("uri"), ngx_http_variable_request,
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105 offsetof(ngx_http_request_t, uri),
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106 NGX_HTTP_VAR_NOCACHABLE, 0 },
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107
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509
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108 { ngx_string("document_uri"), ngx_http_variable_request,
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573
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109 offsetof(ngx_http_request_t, uri),
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110 NGX_HTTP_VAR_NOCACHABLE, 0 },
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509
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111
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569
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112 { ngx_string("request"), ngx_http_variable_request,
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113 offsetof(ngx_http_request_t, request_line), 0, 0 },
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114
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533
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115 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 },
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509
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116
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117 { ngx_string("query_string"), ngx_http_variable_request,
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118 offsetof(ngx_http_request_t, args),
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533
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119 NGX_HTTP_VAR_NOCACHABLE, 0 },
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499
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120
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589
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121 { ngx_string("args"), ngx_http_variable_request,
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122 offsetof(ngx_http_request_t, args),
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123 NGX_HTTP_VAR_NOCACHABLE, 0 },
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124
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509
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125 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
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533
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126 NGX_HTTP_VAR_NOCACHABLE, 0 },
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509
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127
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128 { ngx_string("server_name"), ngx_http_variable_request,
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533
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129 offsetof(ngx_http_request_t, server_name), 0, 0 },
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509
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130
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561
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131 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 },
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509
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132
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539
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133 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 },
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509
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134
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611
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135 { ngx_string("body_bytes_sent"), ngx_http_variable_body_bytes_sent,
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136 0, 0, 0 },
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137
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533
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138 { ngx_null_string, NULL, 0, 0, 0 }
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499
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139 };
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140
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141
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577
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142 ngx_http_variable_value_t ngx_http_variable_null_value =
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143 ngx_http_variable("");
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144 ngx_http_variable_value_t ngx_http_variable_true_value =
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145 ngx_http_variable("1");
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146
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147
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499
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148 ngx_http_variable_t *
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509
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149 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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150 {
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611
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151 ngx_int_t rc;
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509
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152 ngx_uint_t i;
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611
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153 ngx_hash_key_t *key;
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509
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154 ngx_http_variable_t *v;
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155 ngx_http_core_main_conf_t *cmcf;
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156
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157 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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158
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611
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159 key = cmcf->variables_keys->keys.elts;
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160 for (i = 0; i < cmcf->variables_keys->keys.nelts; i++) {
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161 if (name->len != key[i].key.len
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162 || ngx_strncasecmp(name->data, key[i].key.data, name->len) != 0)
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509
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163 {
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164 continue;
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165 }
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166
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611
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167 v = key[i].value;
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168
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169 if (!(v->flags & NGX_HTTP_VAR_CHANGABLE)) {
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509
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170 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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171 "the duplicate \"%V\" variable", name);
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172 return NULL;
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173 }
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174
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611
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175 return v;
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509
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176 }
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177
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611
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178 v = ngx_palloc(cf->pool, sizeof(ngx_http_variable_t));
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509
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179 if (v == NULL) {
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180 return NULL;
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181 }
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182
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183 v->name.len = name->len;
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184 v->name.data = ngx_palloc(cf->pool, name->len);
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185 if (v->name.data == NULL) {
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186 return NULL;
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187 }
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188
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189 for (i = 0; i < name->len; i++) {
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190 v->name.data[i] = ngx_tolower(name->data[i]);
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191 }
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192
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193 v->handler = NULL;
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194 v->data = 0;
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195 v->flags = flags;
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533
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196 v->index = 0;
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509
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197
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611
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198 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0);
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199
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200 if (rc == NGX_ERROR) {
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201 return NULL;
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202 }
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203
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204 if (rc == NGX_BUSY) {
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205 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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206 "conflicting variable name \"%V\"", name);
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207 return NULL;
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208 }
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209
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509
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210 return v;
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211 }
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212
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213
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214 ngx_int_t
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215 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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499
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216 {
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501
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217 ngx_uint_t i;
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218 ngx_http_variable_t *v;
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499
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219 ngx_http_core_main_conf_t *cmcf;
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220
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221 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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222
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501
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223 v = cmcf->variables.elts;
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224
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225 if (v == NULL) {
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499
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226 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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227 sizeof(ngx_http_variable_t)) == NGX_ERROR)
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228 {
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509
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229 return NGX_ERROR;
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499
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230 }
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501
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231
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232 } else {
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233 for (i = 0; i < cmcf->variables.nelts; i++) {
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234 if (name->len != v[i].name.len
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235 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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236 {
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237 continue;
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238 }
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239
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509
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240 return i;
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501
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241 }
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499
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242 }
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243
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501
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244 v = ngx_array_push(&cmcf->variables);
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245 if (v == NULL) {
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509
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246 return NGX_ERROR;
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499
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247 }
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248
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501
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249 v->name.len = name->len;
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250 v->name.data = ngx_palloc(cf->pool, name->len);
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251 if (v->name.data == NULL) {
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509
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252 return NGX_ERROR;
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501
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253 }
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499
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254
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501
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255 for (i = 0; i < name->len; i++) {
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509
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256 v->name.data[i] = ngx_tolower(name->data[i]);
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501
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257 }
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258
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259 v->handler = NULL;
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260 v->data = 0;
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509
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261 v->flags = 0;
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533
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262 v->index = cmcf->variables.nelts - 1;
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501
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263
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509
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264 return cmcf->variables.nelts - 1;
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499
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265 }
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266
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267
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268 ngx_http_variable_value_t *
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269 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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270 {
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501
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271 ngx_http_variable_t *v;
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499
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272 ngx_http_core_main_conf_t *cmcf;
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273
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274 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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275
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553
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276 if (cmcf->variables.nelts <= index) {
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499
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277 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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278 "unknown variable index: %d", index);
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279 return NULL;
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280 }
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281
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573
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282 if (r->variables[index].not_found || r->variables[index].valid) {
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283 return &r->variables[index];
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501
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284 }
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499
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285
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501
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286 v = cmcf->variables.elts;
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499
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287
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573
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288 if (v[index].handler(r, &r->variables[index], v[index].data) == NGX_OK) {
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499
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289
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573
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290 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
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291 r->variables[index].no_cachable = 1;
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499
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292 }
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573
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293
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294 return &r->variables[index];
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499
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295 }
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296
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573
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297 return NULL;
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298 }
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299
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300
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301 ngx_http_variable_value_t *
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302 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
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303 {
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304 ngx_http_variable_value_t *v;
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305
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306 v = &r->variables[index];
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307
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308 if (v->valid) {
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309 if (!v->no_cachable) {
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310 return v;
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311 }
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312
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313 v->valid = 0;
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314 v->not_found = 0;
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509
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315 }
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501
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316
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573
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317 return ngx_http_get_indexed_variable(r, index);
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499
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318 }
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319
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320
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321 ngx_http_variable_value_t *
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611
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322 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key)
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499
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323 {
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501
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324 ngx_http_variable_t *v;
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573
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325 ngx_http_variable_value_t *vv;
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499
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326 ngx_http_core_main_conf_t *cmcf;
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327
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328 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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329
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611
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330 v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len);
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499
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331
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611
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332 if (v) {
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333 if (v->flags & NGX_HTTP_VAR_INDEXED) {
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334 return ngx_http_get_indexed_variable(r, v->index);
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519
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335
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336 } else {
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499
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337
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573
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338 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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501
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339
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611
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340 if (vv && v->handler(r, vv, v->data) == NGX_OK) {
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573
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341 return vv;
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342 }
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509
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343
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573
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344 return NULL;
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345 }
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509
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346 }
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347
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348 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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|
349 if (vv == NULL) {
|
|
|
350 return NULL;
|
|
|
351 }
|
|
|
352
|
|
573
|
353 if (ngx_strncmp(name->data, "http_", 5) == 0) {
|
|
499
|
354
|
|
577
|
355 if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
|
|
|
356 == NGX_OK)
|
|
|
357 {
|
|
|
358 return vv;
|
|
|
359 }
|
|
|
360
|
|
|
361 return NULL;
|
|
|
362 }
|
|
|
363
|
|
|
364 if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
|
|
|
365
|
|
|
366 if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
|
|
|
367 == NGX_OK)
|
|
573
|
368 {
|
|
|
369 return vv;
|
|
|
370 }
|
|
499
|
371
|
|
|
372 return NULL;
|
|
|
373 }
|
|
|
374
|
|
573
|
375 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
376 "unknown \"%V\" variable", name);
|
|
|
377
|
|
|
378 vv->not_found = 1;
|
|
499
|
379
|
|
501
|
380 return vv;
|
|
499
|
381 }
|
|
|
382
|
|
|
383
|
|
573
|
384 static ngx_int_t
|
|
|
385 ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
386 uintptr_t data)
|
|
|
387 {
|
|
|
388 ngx_str_t *s;
|
|
|
389
|
|
|
390 s = (ngx_str_t *) ((char *) r + data);
|
|
|
391
|
|
|
392 if (s->data) {
|
|
|
393 v->len = s->len;
|
|
|
394 v->valid = 1;
|
|
|
395 v->no_cachable = 0;
|
|
|
396 v->not_found = 0;
|
|
|
397 v->data = s->data;
|
|
|
398
|
|
|
399 } else {
|
|
|
400 v->not_found = 1;
|
|
|
401 }
|
|
|
402
|
|
|
403 return NGX_OK;
|
|
|
404 }
|
|
|
405
|
|
|
406
|
|
|
407 static ngx_int_t
|
|
|
408 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
409 uintptr_t data)
|
|
515
|
410 {
|
|
573
|
411 ngx_table_elt_t *h;
|
|
|
412
|
|
|
413 h = *(ngx_table_elt_t **) ((char *) r + data);
|
|
|
414
|
|
|
415 if (h) {
|
|
|
416 v->len = h->value.len;
|
|
|
417 v->valid = 1;
|
|
|
418 v->no_cachable = 0;
|
|
|
419 v->not_found = 0;
|
|
|
420 v->data = h->value.data;
|
|
|
421
|
|
|
422 } else {
|
|
|
423 v->not_found = 1;
|
|
|
424 }
|
|
|
425
|
|
|
426 return NGX_OK;
|
|
|
427 }
|
|
|
428
|
|
|
429
|
|
|
430 static ngx_int_t
|
|
|
431 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
432 uintptr_t data)
|
|
|
433 {
|
|
|
434 size_t len;
|
|
|
435 u_char *p;
|
|
|
436 ngx_uint_t i;
|
|
|
437 ngx_array_t *a;
|
|
|
438 ngx_table_elt_t **h;
|
|
515
|
439
|
|
|
440 a = (ngx_array_t *) ((char *) r + data);
|
|
|
441
|
|
|
442 if (a->nelts == 0) {
|
|
573
|
443 v->not_found = 1;
|
|
|
444 return NGX_OK;
|
|
515
|
445 }
|
|
|
446
|
|
573
|
447 v->valid = 1;
|
|
|
448 v->no_cachable = 0;
|
|
|
449 v->not_found = 0;
|
|
515
|
450
|
|
|
451 h = a->elts;
|
|
|
452
|
|
|
453 if (a->nelts == 1) {
|
|
573
|
454 v->len = (*h)->value.len;
|
|
|
455 v->data = (*h)->value.data;
|
|
515
|
456
|
|
573
|
457 return NGX_OK;
|
|
515
|
458 }
|
|
|
459
|
|
573
|
460 len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
|
461
|
|
|
462 for (i = 0; i < a->nelts; i++) {
|
|
|
463 len += h[i]->value.len + sizeof("; ") - 1;
|
|
515
|
464 }
|
|
|
465
|
|
573
|
466 p = ngx_palloc(r->pool, len);
|
|
|
467 if (p == NULL) {
|
|
|
468 return NGX_ERROR;
|
|
|
469 }
|
|
|
470
|
|
|
471 v->len = len;
|
|
|
472 v->data = p;
|
|
515
|
473
|
|
|
474 for (i = 0; /* void */ ; i++) {
|
|
573
|
475 p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
|
|
515
|
476
|
|
|
477 if (i == a->nelts - 1) {
|
|
|
478 break;
|
|
|
479 }
|
|
|
480
|
|
|
481 *p++ = ';'; *p++ = ' ';
|
|
|
482 }
|
|
|
483
|
|
573
|
484 return NGX_OK;
|
|
515
|
485 }
|
|
|
486
|
|
|
487
|
|
573
|
488 static ngx_int_t
|
|
577
|
489 ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
|
490 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
491 {
|
|
|
492 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
493 &r->headers_in.headers.part,
|
|
|
494 sizeof("http_") - 1);
|
|
|
495 }
|
|
|
496
|
|
|
497
|
|
|
498 static ngx_int_t
|
|
|
499 ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
|
573
|
500 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
501 {
|
|
577
|
502 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
503 &r->headers_out.headers.part,
|
|
|
504 sizeof("sent_http_") - 1);
|
|
|
505 }
|
|
501
|
506
|
|
577
|
507
|
|
|
508 static ngx_int_t
|
|
|
509 ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
|
|
|
510 ngx_list_part_t *part, size_t prefix)
|
|
|
511 {
|
|
573
|
512 u_char ch;
|
|
|
513 ngx_uint_t i, n;
|
|
|
514 ngx_table_elt_t *header;
|
|
499
|
515
|
|
|
516 header = part->elts;
|
|
|
517
|
|
|
518 for (i = 0; /* void */ ; i++) {
|
|
|
519
|
|
|
520 if (i >= part->nelts) {
|
|
|
521 if (part->next == NULL) {
|
|
|
522 break;
|
|
|
523 }
|
|
|
524
|
|
|
525 part = part->next;
|
|
|
526 header = part->elts;
|
|
|
527 i = 0;
|
|
|
528 }
|
|
|
529
|
|
577
|
530 for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
|
|
499
|
531 ch = header[i].key.data[n];
|
|
|
532
|
|
509
|
533 if (ch >= 'A' && ch <= 'Z') {
|
|
|
534 ch |= 0x20;
|
|
499
|
535
|
|
|
536 } else if (ch == '-') {
|
|
|
537 ch = '_';
|
|
|
538 }
|
|
|
539
|
|
577
|
540 if (var->data[n + prefix] != ch) {
|
|
499
|
541 break;
|
|
|
542 }
|
|
|
543 }
|
|
|
544
|
|
577
|
545 if (n + prefix == var->len) {
|
|
573
|
546 v->len = header[i].value.len;
|
|
|
547 v->valid = 1;
|
|
|
548 v->no_cachable = 0;
|
|
|
549 v->not_found = 0;
|
|
|
550 v->data = header[i].value.data;
|
|
499
|
551
|
|
573
|
552 return NGX_OK;
|
|
499
|
553 }
|
|
|
554 }
|
|
|
555
|
|
573
|
556 v->not_found = 1;
|
|
|
557
|
|
|
558 return NGX_OK;
|
|
509
|
559 }
|
|
|
560
|
|
|
561
|
|
573
|
562 static ngx_int_t
|
|
|
563 ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
564 uintptr_t data)
|
|
509
|
565 {
|
|
573
|
566 if (r->headers_in.host) {
|
|
|
567 v->len = r->headers_in.host_name_len;
|
|
|
568 v->data = r->headers_in.host->value.data;
|
|
509
|
569
|
|
573
|
570 } else {
|
|
|
571 v->len = r->server_name.len;
|
|
|
572 v->data = r->server_name.data;
|
|
509
|
573 }
|
|
|
574
|
|
573
|
575 v->valid = 1;
|
|
|
576 v->no_cachable = 0;
|
|
|
577 v->not_found = 0;
|
|
509
|
578
|
|
573
|
579 return NGX_OK;
|
|
499
|
580 }
|
|
|
581
|
|
|
582
|
|
573
|
583 static ngx_int_t
|
|
|
584 ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
|
585 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
586 {
|
|
573
|
587 v->len = r->connection->addr_text.len;
|
|
|
588 v->valid = 1;
|
|
|
589 v->no_cachable = 0;
|
|
|
590 v->not_found = 0;
|
|
|
591 v->data = r->connection->addr_text.data;
|
|
499
|
592
|
|
573
|
593 return NGX_OK;
|
|
499
|
594 }
|
|
|
595
|
|
|
596
|
|
573
|
597 static ngx_int_t
|
|
|
598 ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
|
599 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
600 {
|
|
573
|
601 ngx_uint_t port;
|
|
|
602 struct sockaddr_in *sin;
|
|
509
|
603
|
|
573
|
604 v->len = 0;
|
|
|
605 v->valid = 1;
|
|
|
606 v->no_cachable = 0;
|
|
|
607 v->not_found = 0;
|
|
509
|
608
|
|
573
|
609 v->data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
|
610 if (v->data == NULL) {
|
|
|
611 return NGX_ERROR;
|
|
509
|
612 }
|
|
|
613
|
|
|
614 /* AF_INET only */
|
|
577
|
615
|
|
509
|
616 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
|
617 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
577
|
618
|
|
509
|
619 port = ntohs(sin->sin_port);
|
|
577
|
620
|
|
509
|
621 if (port > 0 && port < 65536) {
|
|
573
|
622 v->len = ngx_sprintf(v->data, "%ui", port) - v->data;
|
|
509
|
623 }
|
|
|
624 }
|
|
|
625
|
|
573
|
626 return NGX_OK;
|
|
509
|
627 }
|
|
|
628
|
|
|
629
|
|
573
|
630 static ngx_int_t
|
|
|
631 ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
|
632 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
633 {
|
|
573
|
634 socklen_t len;
|
|
|
635 ngx_connection_t *c;
|
|
|
636 struct sockaddr_in sin;
|
|
499
|
637
|
|
573
|
638 v->data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
|
639 if (v->data == NULL) {
|
|
|
640 return NGX_ERROR;
|
|
509
|
641 }
|
|
|
642
|
|
|
643 c = r->connection;
|
|
|
644
|
|
|
645 if (r->in_addr == 0) {
|
|
|
646 len = sizeof(struct sockaddr_in);
|
|
|
647 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
|
648 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
|
649 ngx_socket_errno, "getsockname() failed");
|
|
573
|
650 return NGX_ERROR;
|
|
509
|
651 }
|
|
|
652
|
|
|
653 r->in_addr = sin.sin_addr.s_addr;
|
|
|
654 }
|
|
|
655
|
|
573
|
656 v->len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
|
657 v->data, INET_ADDRSTRLEN);
|
|
|
658 v->valid = 1;
|
|
|
659 v->no_cachable = 0;
|
|
|
660 v->not_found = 0;
|
|
499
|
661
|
|
573
|
662 return NGX_OK;
|
|
499
|
663 }
|
|
|
664
|
|
|
665
|
|
573
|
666 static ngx_int_t
|
|
|
667 ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
|
668 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
669 {
|
|
573
|
670 v->len = r->port_text->len - 1;
|
|
|
671 v->valid = 1;
|
|
|
672 v->no_cachable = 0;
|
|
|
673 v->not_found = 0;
|
|
|
674 v->data = r->port_text->data + 1;
|
|
509
|
675
|
|
573
|
676 return NGX_OK;
|
|
509
|
677 }
|
|
|
678
|
|
|
679
|
|
573
|
680 static ngx_int_t
|
|
|
681 ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
|
682 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
683 {
|
|
573
|
684 ngx_http_core_loc_conf_t *clcf;
|
|
509
|
685
|
|
|
686 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
687
|
|
573
|
688 v->len = clcf->root.len;
|
|
|
689 v->valid = 1;
|
|
|
690 v->no_cachable = 0;
|
|
|
691 v->not_found = 0;
|
|
|
692 v->data = clcf->root.data;
|
|
509
|
693
|
|
573
|
694 return NGX_OK;
|
|
509
|
695 }
|
|
|
696
|
|
|
697
|
|
573
|
698 static ngx_int_t
|
|
|
699 ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
|
700 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
701 {
|
|
573
|
702 ngx_str_t path;
|
|
499
|
703
|
|
573
|
704 if (ngx_http_map_uri_to_path(r, &path, 0) == NULL) {
|
|
|
705 return NGX_ERROR;
|
|
557
|
706 }
|
|
509
|
707
|
|
557
|
708 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
|
509
|
709
|
|
573
|
710 v->len = path.len - 1;
|
|
|
711 v->valid = 1;
|
|
|
712 v->no_cachable = 0;
|
|
|
713 v->not_found = 0;
|
|
|
714 v->data = path.data;
|
|
499
|
715
|
|
573
|
716 return NGX_OK;
|
|
499
|
717 }
|
|
|
718
|
|
|
719
|
|
573
|
720 static ngx_int_t
|
|
|
721 ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
|
722 ngx_http_variable_value_t *v, uintptr_t data)
|
|
561
|
723 {
|
|
573
|
724 if (r->method_name.data) {
|
|
|
725 if (r->upstream && r->upstream->method.len) {
|
|
|
726 v->len = r->upstream->method.len;
|
|
|
727 v->data = r->upstream->method.data;
|
|
561
|
728
|
|
573
|
729 } else {
|
|
|
730 v->len = r->method_name.len;
|
|
|
731 v->data = r->method_name.data;
|
|
|
732 }
|
|
|
733
|
|
|
734 v->valid = 1;
|
|
|
735 v->no_cachable = 0;
|
|
|
736 v->not_found = 0;
|
|
|
737
|
|
|
738 } else {
|
|
|
739 v->not_found = 1;
|
|
561
|
740 }
|
|
|
741
|
|
573
|
742 return NGX_OK;
|
|
561
|
743 }
|
|
|
744
|
|
|
745
|
|
573
|
746 static ngx_int_t
|
|
|
747 ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
|
748 ngx_http_variable_value_t *v, uintptr_t data)
|
|
539
|
749 {
|
|
573
|
750 ngx_int_t rc;
|
|
539
|
751
|
|
|
752 rc = ngx_http_auth_basic_user(r);
|
|
|
753
|
|
|
754 if (rc == NGX_DECLINED) {
|
|
573
|
755 v->not_found = 1;
|
|
|
756 return NGX_OK;
|
|
539
|
757 }
|
|
|
758
|
|
|
759 if (rc == NGX_ERROR) {
|
|
573
|
760 return NGX_ERROR;
|
|
539
|
761 }
|
|
|
762
|
|
573
|
763 v->len = r->headers_in.user.len;
|
|
|
764 v->valid = 1;
|
|
|
765 v->no_cachable = 0;
|
|
|
766 v->not_found = 0;
|
|
|
767 v->data = r->headers_in.user.data;
|
|
571
|
768
|
|
573
|
769 return NGX_OK;
|
|
571
|
770 }
|
|
|
771
|
|
|
772
|
|
611
|
773 static ngx_int_t
|
|
|
774 ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
|
|
|
775 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
776 {
|
|
|
777 off_t sent;
|
|
|
778 u_char *p;
|
|
|
779
|
|
|
780 sent = r->connection->sent - r->header_size;
|
|
|
781
|
|
|
782 if (sent < 0) {
|
|
|
783 sent = 0;
|
|
|
784 }
|
|
|
785
|
|
|
786 p = ngx_palloc(r->pool, NGX_OFF_T_LEN);
|
|
|
787 if (p == NULL) {
|
|
|
788 return NGX_ERROR;
|
|
|
789 }
|
|
|
790
|
|
|
791 v->len = ngx_sprintf(p, "%O", sent) - p;
|
|
|
792 v->valid = 1;
|
|
|
793 v->no_cachable = 0;
|
|
|
794 v->not_found = 0;
|
|
|
795 v->data = p;
|
|
|
796
|
|
|
797 return NGX_OK;
|
|
|
798 }
|
|
|
799
|
|
|
800
|
|
499
|
801 ngx_int_t
|
|
509
|
802 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
499
|
803 {
|
|
611
|
804 ngx_int_t rc;
|
|
|
805 ngx_http_variable_t *v;
|
|
501
|
806 ngx_http_core_main_conf_t *cmcf;
|
|
499
|
807
|
|
509
|
808 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
809
|
|
611
|
810 cmcf->variables_keys = ngx_pcalloc(cf->temp_pool,
|
|
|
811 sizeof(ngx_hash_keys_arrays_t));
|
|
|
812 if (cmcf->variables_keys == NULL) {
|
|
|
813 return NGX_ERROR;
|
|
|
814 }
|
|
|
815
|
|
|
816 cmcf->variables_keys->pool = cf->pool;
|
|
|
817 cmcf->variables_keys->temp_pool = cf->pool;
|
|
|
818
|
|
|
819 if (ngx_hash_keys_array_init(cmcf->variables_keys, NGX_HASH_SMALL)
|
|
|
820 != NGX_OK)
|
|
509
|
821 {
|
|
499
|
822 return NGX_ERROR;
|
|
|
823 }
|
|
|
824
|
|
611
|
825 for (v = ngx_http_core_variables; v->name.len; v++) {
|
|
|
826 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v,
|
|
|
827 NGX_HASH_READONLY_KEY);
|
|
|
828
|
|
|
829 if (rc == NGX_OK) {
|
|
|
830 continue;
|
|
499
|
831 }
|
|
|
832
|
|
611
|
833 if (rc == NGX_BUSY) {
|
|
|
834 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
835 "conflicting variable name \"%V\"", &v->name);
|
|
|
836 }
|
|
|
837
|
|
|
838 return NGX_ERROR;
|
|
499
|
839 }
|
|
|
840
|
|
|
841 return NGX_OK;
|
|
|
842 }
|
|
509
|
843
|
|
|
844
|
|
|
845 ngx_int_t
|
|
|
846 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
|
847 {
|
|
|
848 ngx_uint_t i, n;
|
|
611
|
849 ngx_hash_key_t *key;
|
|
|
850 ngx_hash_init_t hash;
|
|
509
|
851 ngx_http_variable_t *v, *av;
|
|
|
852 ngx_http_core_main_conf_t *cmcf;
|
|
|
853
|
|
|
854 /* set the handlers for the indexed http variables */
|
|
|
855
|
|
|
856 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
857
|
|
|
858 v = cmcf->variables.elts;
|
|
611
|
859 key = cmcf->variables_keys->keys.elts;
|
|
509
|
860
|
|
|
861 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
862
|
|
611
|
863 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
509
|
864
|
|
611
|
865 if (v[i].name.len == key[n].key.len
|
|
|
866 && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len)
|
|
509
|
867 == 0)
|
|
|
868 {
|
|
611
|
869 av = key[n].value;
|
|
|
870
|
|
|
871 v[i].handler = av->handler;
|
|
|
872 v[i].data = av->data;
|
|
527
|
873
|
|
611
|
874 av->flags |= NGX_HTTP_VAR_INDEXED;
|
|
|
875 v[i].flags = av->flags;
|
|
509
|
876
|
|
611
|
877 av->index = i;
|
|
533
|
878
|
|
509
|
879 goto next;
|
|
|
880 }
|
|
|
881 }
|
|
|
882
|
|
|
883 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
577
|
884 v[i].handler = ngx_http_variable_unknown_header_in;
|
|
|
885 v[i].data = (uintptr_t) &v[i].name;
|
|
|
886
|
|
|
887 continue;
|
|
|
888 }
|
|
|
889
|
|
|
890 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
|
|
|
891 v[i].handler = ngx_http_variable_unknown_header_out;
|
|
509
|
892 v[i].data = (uintptr_t) &v[i].name;
|
|
|
893
|
|
|
894 continue;
|
|
|
895 }
|
|
|
896
|
|
|
897 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
898 "unknown \"%V\" variable", &v[i].name);
|
|
|
899
|
|
|
900 return NGX_ERROR;
|
|
|
901
|
|
|
902 next:
|
|
|
903 continue;
|
|
|
904 }
|
|
|
905
|
|
|
906
|
|
611
|
907 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
|
908 av = key[n].value;
|
|
|
909
|
|
|
910 if (av->flags & NGX_HTTP_VAR_NOHASH) {
|
|
|
911 key[n].key.data = NULL;
|
|
583
|
912 }
|
|
|
913 }
|
|
|
914
|
|
|
915
|
|
611
|
916 hash.hash = &cmcf->variables_hash;
|
|
|
917 hash.key = ngx_hash_key;
|
|
|
918 hash.max_size = cmcf->variables_hash_max_size;
|
|
|
919 hash.bucket_size = cmcf->variables_hash_bucket_size;
|
|
|
920 hash.name = "variables_hash";
|
|
|
921 hash.pool = cf->pool;
|
|
|
922 hash.temp_pool = NULL;
|
|
509
|
923
|
|
611
|
924 if (ngx_hash_init(&hash, cmcf->variables_keys->keys.elts,
|
|
|
925 cmcf->variables_keys->keys.nelts)
|
|
581
|
926 != NGX_OK)
|
|
509
|
927 {
|
|
|
928 return NGX_ERROR;
|
|
|
929 }
|
|
|
930
|
|
611
|
931 cmcf->variables_keys = NULL;
|
|
509
|
932
|
|
|
933 return NGX_OK;
|
|
|
934 }
|
