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