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