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