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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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122
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13 static ngx_int_t ngx_http_variable_request(ngx_http_request_t *r,
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14 ngx_http_variable_value_t *v, uintptr_t data);
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15 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r,
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16 ngx_http_variable_value_t *v, uintptr_t data);
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17 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
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18 ngx_http_variable_value_t *v, uintptr_t data);
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126
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19
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20 static ngx_int_t ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
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122
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21 ngx_http_variable_value_t *v, uintptr_t data);
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126
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22 static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
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23 ngx_http_variable_value_t *v, uintptr_t data);
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24 static ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
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25 ngx_str_t *var, ngx_list_part_t *part, size_t prefix);
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26
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122
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27 static ngx_int_t ngx_http_variable_host(ngx_http_request_t *r,
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28 ngx_http_variable_value_t *v, uintptr_t data);
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29 static ngx_int_t ngx_http_variable_remote_addr(ngx_http_request_t *r,
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30 ngx_http_variable_value_t *v, uintptr_t data);
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31 static ngx_int_t ngx_http_variable_remote_port(ngx_http_request_t *r,
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32 ngx_http_variable_value_t *v, uintptr_t data);
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33 static ngx_int_t ngx_http_variable_server_addr(ngx_http_request_t *r,
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34 ngx_http_variable_value_t *v, uintptr_t data);
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35 static ngx_int_t ngx_http_variable_server_port(ngx_http_request_t *r,
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36 ngx_http_variable_value_t *v, uintptr_t data);
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37 static ngx_int_t ngx_http_variable_document_root(ngx_http_request_t *r,
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38 ngx_http_variable_value_t *v, uintptr_t data);
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39 static ngx_int_t ngx_http_variable_request_filename(ngx_http_request_t *r,
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40 ngx_http_variable_value_t *v, uintptr_t data);
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41 static ngx_int_t ngx_http_variable_request_method(ngx_http_request_t *r,
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42 ngx_http_variable_value_t *v, uintptr_t data);
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43 static ngx_int_t ngx_http_variable_remote_user(ngx_http_request_t *r,
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44 ngx_http_variable_value_t *v, uintptr_t data);
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160
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45 static ngx_int_t ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
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46 ngx_http_variable_value_t *v, uintptr_t data);
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178
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47 static ngx_int_t ngx_http_variable_request_completion(ngx_http_request_t *r,
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48 ngx_http_variable_value_t *v, uintptr_t data);
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48
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49
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50
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58
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51 /*
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52 * TODO:
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53 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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54 * REMOTE_HOST (null), REMOTE_IDENT (null),
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55 * SERVER_SOFTWARE
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56 *
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120
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57 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
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58
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58 */
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48
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59
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58
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60 static ngx_http_variable_t ngx_http_core_variables[] = {
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61
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62 { ngx_string("http_host"), ngx_http_variable_header,
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82
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63 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
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48
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64
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58
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65 { ngx_string("http_user_agent"), ngx_http_variable_header,
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82
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66 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
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58
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67
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68 { ngx_string("http_referer"), ngx_http_variable_header,
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82
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69 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
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48
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70
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71 #if (NGX_HTTP_GZIP)
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58
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72 { ngx_string("http_via"), ngx_http_variable_header,
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82
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73 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
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48
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74 #endif
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75
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76 #if (NGX_HTTP_PROXY)
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58
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77 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
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82
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78 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
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48
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79 #endif
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80
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64
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81 { ngx_string("http_cookie"), ngx_http_variable_headers,
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82
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82 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
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64
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83
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58
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84 { ngx_string("content_length"), ngx_http_variable_header,
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82
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85 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
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58
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86
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87 { ngx_string("content_type"), ngx_http_variable_header,
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82
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88 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
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58
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89
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82
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90 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 },
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58
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91
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82
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92 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 },
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48
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93
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82
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94 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 },
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58
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95
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82
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96 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 },
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58
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97
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82
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98 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 },
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58
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99
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100 { ngx_string("server_protocol"), ngx_http_variable_request,
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82
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101 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
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58
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102
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103 { ngx_string("request_uri"), ngx_http_variable_request,
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82
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104 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
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48
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105
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122
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106 { ngx_string("uri"), ngx_http_variable_request,
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107 offsetof(ngx_http_request_t, uri),
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108 NGX_HTTP_VAR_NOCACHABLE, 0 },
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109
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58
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110 { ngx_string("document_uri"), ngx_http_variable_request,
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122
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111 offsetof(ngx_http_request_t, uri),
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112 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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113
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118
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114 { ngx_string("request"), ngx_http_variable_request,
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115 offsetof(ngx_http_request_t, request_line), 0, 0 },
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116
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82
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117 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 },
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58
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118
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119 { ngx_string("query_string"), ngx_http_variable_request,
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120 offsetof(ngx_http_request_t, args),
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82
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121 NGX_HTTP_VAR_NOCACHABLE, 0 },
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48
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122
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138
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123 { ngx_string("args"), ngx_http_variable_request,
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124 offsetof(ngx_http_request_t, args),
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125 NGX_HTTP_VAR_NOCACHABLE, 0 },
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126
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58
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127 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
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82
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128 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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129
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130 { ngx_string("server_name"), ngx_http_variable_request,
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82
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131 offsetof(ngx_http_request_t, server_name), 0, 0 },
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58
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132
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110
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133 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 },
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58
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134
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88
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135 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 },
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58
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136
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160
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137 { ngx_string("body_bytes_sent"), ngx_http_variable_body_bytes_sent,
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138 0, 0, 0 },
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139
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178
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140 { ngx_string("request_completion"), ngx_http_variable_request_completion,
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141 0, 0, 0 },
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142
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82
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143 { ngx_null_string, NULL, 0, 0, 0 }
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48
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144 };
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145
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146
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126
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147 ngx_http_variable_value_t ngx_http_variable_null_value =
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148 ngx_http_variable("");
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149 ngx_http_variable_value_t ngx_http_variable_true_value =
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150 ngx_http_variable("1");
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151
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152
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48
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153 ngx_http_variable_t *
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58
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154 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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155 {
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160
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156 ngx_int_t rc;
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58
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157 ngx_uint_t i;
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160
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158 ngx_hash_key_t *key;
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58
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159 ngx_http_variable_t *v;
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160 ngx_http_core_main_conf_t *cmcf;
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161
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162 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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163
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160
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164 key = cmcf->variables_keys->keys.elts;
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165 for (i = 0; i < cmcf->variables_keys->keys.nelts; i++) {
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166 if (name->len != key[i].key.len
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167 || ngx_strncasecmp(name->data, key[i].key.data, name->len) != 0)
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58
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168 {
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169 continue;
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170 }
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171
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160
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172 v = key[i].value;
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173
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174 if (!(v->flags & NGX_HTTP_VAR_CHANGABLE)) {
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58
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175 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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176 "the duplicate \"%V\" variable", name);
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177 return NULL;
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178 }
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179
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160
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180 return v;
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58
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181 }
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182
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160
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183 v = ngx_palloc(cf->pool, sizeof(ngx_http_variable_t));
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58
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184 if (v == NULL) {
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185 return NULL;
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186 }
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187
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188 v->name.len = name->len;
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189 v->name.data = ngx_palloc(cf->pool, name->len);
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190 if (v->name.data == NULL) {
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191 return NULL;
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192 }
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193
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194 for (i = 0; i < name->len; i++) {
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195 v->name.data[i] = ngx_tolower(name->data[i]);
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196 }
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197
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198 v->handler = NULL;
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199 v->data = 0;
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200 v->flags = flags;
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82
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201 v->index = 0;
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58
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202
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160
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203 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0);
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204
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205 if (rc == NGX_ERROR) {
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206 return NULL;
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207 }
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208
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209 if (rc == NGX_BUSY) {
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210 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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211 "conflicting variable name \"%V\"", name);
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212 return NULL;
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213 }
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214
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58
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215 return v;
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216 }
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217
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218
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219 ngx_int_t
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220 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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48
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221 {
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50
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222 ngx_uint_t i;
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223 ngx_http_variable_t *v;
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48
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224 ngx_http_core_main_conf_t *cmcf;
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225
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226 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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227
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50
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228 v = cmcf->variables.elts;
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229
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230 if (v == NULL) {
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48
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231 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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232 sizeof(ngx_http_variable_t)) == NGX_ERROR)
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233 {
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58
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234 return NGX_ERROR;
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48
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235 }
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50
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236
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237 } else {
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238 for (i = 0; i < cmcf->variables.nelts; i++) {
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239 if (name->len != v[i].name.len
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240 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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241 {
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242 continue;
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243 }
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244
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58
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245 return i;
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50
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246 }
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48
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247 }
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248
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50
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249 v = ngx_array_push(&cmcf->variables);
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250 if (v == NULL) {
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58
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251 return NGX_ERROR;
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48
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252 }
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253
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50
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254 v->name.len = name->len;
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255 v->name.data = ngx_palloc(cf->pool, name->len);
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256 if (v->name.data == NULL) {
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58
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257 return NGX_ERROR;
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50
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258 }
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48
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259
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50
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260 for (i = 0; i < name->len; i++) {
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58
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261 v->name.data[i] = ngx_tolower(name->data[i]);
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50
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262 }
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263
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264 v->handler = NULL;
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265 v->data = 0;
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58
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266 v->flags = 0;
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82
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267 v->index = cmcf->variables.nelts - 1;
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50
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268
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58
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269 return cmcf->variables.nelts - 1;
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48
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270 }
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271
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272
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273 ngx_http_variable_value_t *
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274 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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275 {
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50
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276 ngx_http_variable_t *v;
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48
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277 ngx_http_core_main_conf_t *cmcf;
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278
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279 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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280
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102
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281 if (cmcf->variables.nelts <= index) {
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48
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282 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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283 "unknown variable index: %d", index);
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284 return NULL;
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285 }
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286
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122
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287 if (r->variables[index].not_found || r->variables[index].valid) {
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288 return &r->variables[index];
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50
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289 }
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48
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290
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50
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291 v = cmcf->variables.elts;
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48
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292
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122
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293 if (v[index].handler(r, &r->variables[index], v[index].data) == NGX_OK) {
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48
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294
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122
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295 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
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296 r->variables[index].no_cachable = 1;
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48
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297 }
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122
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298
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299 return &r->variables[index];
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48
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300 }
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301
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122
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302 return NULL;
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303 }
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304
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305
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306 ngx_http_variable_value_t *
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307 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
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308 {
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309 ngx_http_variable_value_t *v;
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310
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311 v = &r->variables[index];
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312
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313 if (v->valid) {
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314 if (!v->no_cachable) {
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315 return v;
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316 }
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317
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318 v->valid = 0;
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319 v->not_found = 0;
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58
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320 }
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50
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321
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122
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322 return ngx_http_get_indexed_variable(r, index);
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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 ngx_http_variable_value_t *
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184
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327 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key,
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328 ngx_uint_t nowarn)
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48
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329 {
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50
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330 ngx_http_variable_t *v;
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122
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331 ngx_http_variable_value_t *vv;
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48
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332 ngx_http_core_main_conf_t *cmcf;
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333
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334 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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335
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160
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336 v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len);
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48
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337
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160
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338 if (v) {
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339 if (v->flags & NGX_HTTP_VAR_INDEXED) {
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340 return ngx_http_get_indexed_variable(r, v->index);
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68
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341
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342 } else {
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48
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343
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122
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344 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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50
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345
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160
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346 if (vv && v->handler(r, vv, v->data) == NGX_OK) {
|
|
122
|
347 return vv;
|
|
|
348 }
|
|
58
|
349
|
|
122
|
350 return NULL;
|
|
|
351 }
|
|
58
|
352 }
|
|
|
353
|
|
|
354 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
355 if (vv == NULL) {
|
|
|
356 return NULL;
|
|
|
357 }
|
|
|
358
|
|
122
|
359 if (ngx_strncmp(name->data, "http_", 5) == 0) {
|
|
48
|
360
|
|
126
|
361 if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
|
|
|
362 == NGX_OK)
|
|
|
363 {
|
|
|
364 return vv;
|
|
|
365 }
|
|
|
366
|
|
|
367 return NULL;
|
|
|
368 }
|
|
|
369
|
|
|
370 if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
|
|
|
371
|
|
|
372 if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
|
|
|
373 == NGX_OK)
|
|
122
|
374 {
|
|
|
375 return vv;
|
|
|
376 }
|
|
48
|
377
|
|
|
378 return NULL;
|
|
|
379 }
|
|
|
380
|
|
184
|
381 vv->not_found = 1;
|
|
122
|
382
|
|
184
|
383 if (nowarn == 0) {
|
|
|
384 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
385 "unknown \"%V\" variable", name);
|
|
|
386 }
|
|
48
|
387
|
|
50
|
388 return vv;
|
|
48
|
389 }
|
|
|
390
|
|
|
391
|
|
122
|
392 static ngx_int_t
|
|
|
393 ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
394 uintptr_t data)
|
|
|
395 {
|
|
|
396 ngx_str_t *s;
|
|
|
397
|
|
|
398 s = (ngx_str_t *) ((char *) r + data);
|
|
|
399
|
|
|
400 if (s->data) {
|
|
|
401 v->len = s->len;
|
|
|
402 v->valid = 1;
|
|
|
403 v->no_cachable = 0;
|
|
|
404 v->not_found = 0;
|
|
|
405 v->data = s->data;
|
|
|
406
|
|
|
407 } else {
|
|
|
408 v->not_found = 1;
|
|
|
409 }
|
|
|
410
|
|
|
411 return NGX_OK;
|
|
|
412 }
|
|
|
413
|
|
|
414
|
|
|
415 static ngx_int_t
|
|
|
416 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
417 uintptr_t data)
|
|
64
|
418 {
|
|
122
|
419 ngx_table_elt_t *h;
|
|
|
420
|
|
|
421 h = *(ngx_table_elt_t **) ((char *) r + data);
|
|
|
422
|
|
|
423 if (h) {
|
|
|
424 v->len = h->value.len;
|
|
|
425 v->valid = 1;
|
|
|
426 v->no_cachable = 0;
|
|
|
427 v->not_found = 0;
|
|
|
428 v->data = h->value.data;
|
|
|
429
|
|
|
430 } else {
|
|
|
431 v->not_found = 1;
|
|
|
432 }
|
|
|
433
|
|
|
434 return NGX_OK;
|
|
|
435 }
|
|
|
436
|
|
|
437
|
|
|
438 static ngx_int_t
|
|
|
439 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
440 uintptr_t data)
|
|
|
441 {
|
|
|
442 size_t len;
|
|
|
443 u_char *p;
|
|
|
444 ngx_uint_t i;
|
|
|
445 ngx_array_t *a;
|
|
|
446 ngx_table_elt_t **h;
|
|
64
|
447
|
|
|
448 a = (ngx_array_t *) ((char *) r + data);
|
|
|
449
|
|
|
450 if (a->nelts == 0) {
|
|
122
|
451 v->not_found = 1;
|
|
|
452 return NGX_OK;
|
|
64
|
453 }
|
|
|
454
|
|
122
|
455 v->valid = 1;
|
|
|
456 v->no_cachable = 0;
|
|
|
457 v->not_found = 0;
|
|
64
|
458
|
|
|
459 h = a->elts;
|
|
|
460
|
|
|
461 if (a->nelts == 1) {
|
|
122
|
462 v->len = (*h)->value.len;
|
|
|
463 v->data = (*h)->value.data;
|
|
64
|
464
|
|
122
|
465 return NGX_OK;
|
|
64
|
466 }
|
|
|
467
|
|
122
|
468 len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
|
469
|
|
|
470 for (i = 0; i < a->nelts; i++) {
|
|
|
471 len += h[i]->value.len + sizeof("; ") - 1;
|
|
64
|
472 }
|
|
|
473
|
|
122
|
474 p = ngx_palloc(r->pool, len);
|
|
|
475 if (p == NULL) {
|
|
|
476 return NGX_ERROR;
|
|
|
477 }
|
|
|
478
|
|
|
479 v->len = len;
|
|
|
480 v->data = p;
|
|
64
|
481
|
|
|
482 for (i = 0; /* void */ ; i++) {
|
|
122
|
483 p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
|
|
64
|
484
|
|
|
485 if (i == a->nelts - 1) {
|
|
|
486 break;
|
|
|
487 }
|
|
|
488
|
|
|
489 *p++ = ';'; *p++ = ' ';
|
|
|
490 }
|
|
|
491
|
|
122
|
492 return NGX_OK;
|
|
64
|
493 }
|
|
|
494
|
|
|
495
|
|
122
|
496 static ngx_int_t
|
|
126
|
497 ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
|
498 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
499 {
|
|
|
500 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
501 &r->headers_in.headers.part,
|
|
|
502 sizeof("http_") - 1);
|
|
|
503 }
|
|
|
504
|
|
|
505
|
|
|
506 static ngx_int_t
|
|
|
507 ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
|
122
|
508 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
509 {
|
|
126
|
510 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
511 &r->headers_out.headers.part,
|
|
|
512 sizeof("sent_http_") - 1);
|
|
|
513 }
|
|
50
|
514
|
|
126
|
515
|
|
|
516 static ngx_int_t
|
|
|
517 ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
|
|
|
518 ngx_list_part_t *part, size_t prefix)
|
|
|
519 {
|
|
122
|
520 u_char ch;
|
|
|
521 ngx_uint_t i, n;
|
|
|
522 ngx_table_elt_t *header;
|
|
48
|
523
|
|
|
524 header = part->elts;
|
|
|
525
|
|
|
526 for (i = 0; /* void */ ; i++) {
|
|
|
527
|
|
|
528 if (i >= part->nelts) {
|
|
|
529 if (part->next == NULL) {
|
|
|
530 break;
|
|
|
531 }
|
|
|
532
|
|
|
533 part = part->next;
|
|
|
534 header = part->elts;
|
|
|
535 i = 0;
|
|
|
536 }
|
|
|
537
|
|
126
|
538 for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
|
|
48
|
539 ch = header[i].key.data[n];
|
|
|
540
|
|
58
|
541 if (ch >= 'A' && ch <= 'Z') {
|
|
|
542 ch |= 0x20;
|
|
48
|
543
|
|
|
544 } else if (ch == '-') {
|
|
|
545 ch = '_';
|
|
|
546 }
|
|
|
547
|
|
126
|
548 if (var->data[n + prefix] != ch) {
|
|
48
|
549 break;
|
|
|
550 }
|
|
|
551 }
|
|
|
552
|
|
126
|
553 if (n + prefix == var->len) {
|
|
122
|
554 v->len = header[i].value.len;
|
|
|
555 v->valid = 1;
|
|
|
556 v->no_cachable = 0;
|
|
|
557 v->not_found = 0;
|
|
|
558 v->data = header[i].value.data;
|
|
48
|
559
|
|
122
|
560 return NGX_OK;
|
|
48
|
561 }
|
|
|
562 }
|
|
|
563
|
|
122
|
564 v->not_found = 1;
|
|
|
565
|
|
|
566 return NGX_OK;
|
|
58
|
567 }
|
|
|
568
|
|
|
569
|
|
122
|
570 static ngx_int_t
|
|
|
571 ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
572 uintptr_t data)
|
|
58
|
573 {
|
|
122
|
574 if (r->headers_in.host) {
|
|
|
575 v->len = r->headers_in.host_name_len;
|
|
|
576 v->data = r->headers_in.host->value.data;
|
|
58
|
577
|
|
122
|
578 } else {
|
|
|
579 v->len = r->server_name.len;
|
|
|
580 v->data = r->server_name.data;
|
|
58
|
581 }
|
|
|
582
|
|
122
|
583 v->valid = 1;
|
|
|
584 v->no_cachable = 0;
|
|
|
585 v->not_found = 0;
|
|
58
|
586
|
|
122
|
587 return NGX_OK;
|
|
48
|
588 }
|
|
|
589
|
|
|
590
|
|
122
|
591 static ngx_int_t
|
|
|
592 ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
|
593 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
594 {
|
|
122
|
595 v->len = r->connection->addr_text.len;
|
|
|
596 v->valid = 1;
|
|
|
597 v->no_cachable = 0;
|
|
|
598 v->not_found = 0;
|
|
|
599 v->data = r->connection->addr_text.data;
|
|
48
|
600
|
|
122
|
601 return NGX_OK;
|
|
48
|
602 }
|
|
|
603
|
|
|
604
|
|
122
|
605 static ngx_int_t
|
|
|
606 ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
|
607 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
608 {
|
|
122
|
609 ngx_uint_t port;
|
|
|
610 struct sockaddr_in *sin;
|
|
58
|
611
|
|
122
|
612 v->len = 0;
|
|
|
613 v->valid = 1;
|
|
|
614 v->no_cachable = 0;
|
|
|
615 v->not_found = 0;
|
|
58
|
616
|
|
122
|
617 v->data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
|
618 if (v->data == NULL) {
|
|
|
619 return NGX_ERROR;
|
|
58
|
620 }
|
|
|
621
|
|
|
622 /* AF_INET only */
|
|
126
|
623
|
|
58
|
624 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
|
625 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
126
|
626
|
|
58
|
627 port = ntohs(sin->sin_port);
|
|
126
|
628
|
|
58
|
629 if (port > 0 && port < 65536) {
|
|
122
|
630 v->len = ngx_sprintf(v->data, "%ui", port) - v->data;
|
|
58
|
631 }
|
|
|
632 }
|
|
|
633
|
|
122
|
634 return NGX_OK;
|
|
58
|
635 }
|
|
|
636
|
|
|
637
|
|
122
|
638 static ngx_int_t
|
|
|
639 ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
|
640 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
641 {
|
|
122
|
642 socklen_t len;
|
|
|
643 ngx_connection_t *c;
|
|
|
644 struct sockaddr_in sin;
|
|
48
|
645
|
|
122
|
646 v->data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
|
647 if (v->data == NULL) {
|
|
|
648 return NGX_ERROR;
|
|
58
|
649 }
|
|
|
650
|
|
|
651 c = r->connection;
|
|
|
652
|
|
|
653 if (r->in_addr == 0) {
|
|
|
654 len = sizeof(struct sockaddr_in);
|
|
|
655 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
|
656 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
|
657 ngx_socket_errno, "getsockname() failed");
|
|
122
|
658 return NGX_ERROR;
|
|
58
|
659 }
|
|
|
660
|
|
|
661 r->in_addr = sin.sin_addr.s_addr;
|
|
|
662 }
|
|
|
663
|
|
122
|
664 v->len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
|
665 v->data, INET_ADDRSTRLEN);
|
|
|
666 v->valid = 1;
|
|
|
667 v->no_cachable = 0;
|
|
|
668 v->not_found = 0;
|
|
48
|
669
|
|
122
|
670 return NGX_OK;
|
|
48
|
671 }
|
|
|
672
|
|
|
673
|
|
122
|
674 static ngx_int_t
|
|
|
675 ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
|
676 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
677 {
|
|
122
|
678 v->len = r->port_text->len - 1;
|
|
|
679 v->valid = 1;
|
|
|
680 v->no_cachable = 0;
|
|
|
681 v->not_found = 0;
|
|
|
682 v->data = r->port_text->data + 1;
|
|
58
|
683
|
|
122
|
684 return NGX_OK;
|
|
58
|
685 }
|
|
|
686
|
|
|
687
|
|
122
|
688 static ngx_int_t
|
|
|
689 ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
|
690 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
691 {
|
|
122
|
692 ngx_http_core_loc_conf_t *clcf;
|
|
58
|
693
|
|
|
694 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
695
|
|
122
|
696 v->len = clcf->root.len;
|
|
|
697 v->valid = 1;
|
|
|
698 v->no_cachable = 0;
|
|
|
699 v->not_found = 0;
|
|
|
700 v->data = clcf->root.data;
|
|
58
|
701
|
|
122
|
702 return NGX_OK;
|
|
58
|
703 }
|
|
|
704
|
|
|
705
|
|
122
|
706 static ngx_int_t
|
|
|
707 ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
|
708 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
709 {
|
|
122
|
710 ngx_str_t path;
|
|
48
|
711
|
|
122
|
712 if (ngx_http_map_uri_to_path(r, &path, 0) == NULL) {
|
|
|
713 return NGX_ERROR;
|
|
106
|
714 }
|
|
58
|
715
|
|
106
|
716 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
|
58
|
717
|
|
122
|
718 v->len = path.len - 1;
|
|
|
719 v->valid = 1;
|
|
|
720 v->no_cachable = 0;
|
|
|
721 v->not_found = 0;
|
|
|
722 v->data = path.data;
|
|
48
|
723
|
|
122
|
724 return NGX_OK;
|
|
48
|
725 }
|
|
|
726
|
|
|
727
|
|
122
|
728 static ngx_int_t
|
|
|
729 ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
|
730 ngx_http_variable_value_t *v, uintptr_t data)
|
|
110
|
731 {
|
|
122
|
732 if (r->method_name.data) {
|
|
|
733 if (r->upstream && r->upstream->method.len) {
|
|
|
734 v->len = r->upstream->method.len;
|
|
|
735 v->data = r->upstream->method.data;
|
|
110
|
736
|
|
122
|
737 } else {
|
|
|
738 v->len = r->method_name.len;
|
|
|
739 v->data = r->method_name.data;
|
|
|
740 }
|
|
|
741
|
|
|
742 v->valid = 1;
|
|
|
743 v->no_cachable = 0;
|
|
|
744 v->not_found = 0;
|
|
|
745
|
|
|
746 } else {
|
|
|
747 v->not_found = 1;
|
|
110
|
748 }
|
|
|
749
|
|
122
|
750 return NGX_OK;
|
|
110
|
751 }
|
|
|
752
|
|
|
753
|
|
122
|
754 static ngx_int_t
|
|
|
755 ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
|
756 ngx_http_variable_value_t *v, uintptr_t data)
|
|
88
|
757 {
|
|
122
|
758 ngx_int_t rc;
|
|
88
|
759
|
|
|
760 rc = ngx_http_auth_basic_user(r);
|
|
|
761
|
|
|
762 if (rc == NGX_DECLINED) {
|
|
122
|
763 v->not_found = 1;
|
|
|
764 return NGX_OK;
|
|
88
|
765 }
|
|
|
766
|
|
|
767 if (rc == NGX_ERROR) {
|
|
122
|
768 return NGX_ERROR;
|
|
88
|
769 }
|
|
|
770
|
|
122
|
771 v->len = r->headers_in.user.len;
|
|
|
772 v->valid = 1;
|
|
|
773 v->no_cachable = 0;
|
|
|
774 v->not_found = 0;
|
|
|
775 v->data = r->headers_in.user.data;
|
|
120
|
776
|
|
122
|
777 return NGX_OK;
|
|
120
|
778 }
|
|
|
779
|
|
|
780
|
|
160
|
781 static ngx_int_t
|
|
|
782 ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
|
|
|
783 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
784 {
|
|
|
785 off_t sent;
|
|
|
786 u_char *p;
|
|
|
787
|
|
|
788 sent = r->connection->sent - r->header_size;
|
|
|
789
|
|
|
790 if (sent < 0) {
|
|
|
791 sent = 0;
|
|
|
792 }
|
|
|
793
|
|
|
794 p = ngx_palloc(r->pool, NGX_OFF_T_LEN);
|
|
|
795 if (p == NULL) {
|
|
|
796 return NGX_ERROR;
|
|
|
797 }
|
|
|
798
|
|
|
799 v->len = ngx_sprintf(p, "%O", sent) - p;
|
|
|
800 v->valid = 1;
|
|
|
801 v->no_cachable = 0;
|
|
|
802 v->not_found = 0;
|
|
|
803 v->data = p;
|
|
|
804
|
|
|
805 return NGX_OK;
|
|
|
806 }
|
|
|
807
|
|
|
808
|
|
178
|
809 static ngx_int_t
|
|
|
810 ngx_http_variable_request_completion(ngx_http_request_t *r,
|
|
|
811 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
812 {
|
|
|
813 if (r->request_complete) {
|
|
|
814 v->len = 2;
|
|
|
815 v->valid = 1;
|
|
|
816 v->no_cachable = 0;
|
|
|
817 v->not_found = 0;
|
|
|
818 v->data = (u_char *) "OK";
|
|
|
819
|
|
|
820 return NGX_OK;
|
|
|
821 }
|
|
|
822
|
|
|
823 v->len = 0;
|
|
|
824 v->valid = 1;
|
|
|
825 v->no_cachable = 0;
|
|
|
826 v->not_found = 0;
|
|
|
827 v->data = (u_char *) "";
|
|
|
828
|
|
|
829 return NGX_OK;
|
|
|
830 }
|
|
|
831
|
|
|
832
|
|
48
|
833 ngx_int_t
|
|
58
|
834 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
48
|
835 {
|
|
160
|
836 ngx_int_t rc;
|
|
|
837 ngx_http_variable_t *v;
|
|
50
|
838 ngx_http_core_main_conf_t *cmcf;
|
|
48
|
839
|
|
58
|
840 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
841
|
|
160
|
842 cmcf->variables_keys = ngx_pcalloc(cf->temp_pool,
|
|
|
843 sizeof(ngx_hash_keys_arrays_t));
|
|
|
844 if (cmcf->variables_keys == NULL) {
|
|
|
845 return NGX_ERROR;
|
|
|
846 }
|
|
|
847
|
|
|
848 cmcf->variables_keys->pool = cf->pool;
|
|
|
849 cmcf->variables_keys->temp_pool = cf->pool;
|
|
|
850
|
|
|
851 if (ngx_hash_keys_array_init(cmcf->variables_keys, NGX_HASH_SMALL)
|
|
|
852 != NGX_OK)
|
|
58
|
853 {
|
|
48
|
854 return NGX_ERROR;
|
|
|
855 }
|
|
|
856
|
|
160
|
857 for (v = ngx_http_core_variables; v->name.len; v++) {
|
|
|
858 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v,
|
|
|
859 NGX_HASH_READONLY_KEY);
|
|
|
860
|
|
|
861 if (rc == NGX_OK) {
|
|
|
862 continue;
|
|
48
|
863 }
|
|
|
864
|
|
160
|
865 if (rc == NGX_BUSY) {
|
|
|
866 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
867 "conflicting variable name \"%V\"", &v->name);
|
|
|
868 }
|
|
|
869
|
|
|
870 return NGX_ERROR;
|
|
48
|
871 }
|
|
|
872
|
|
|
873 return NGX_OK;
|
|
|
874 }
|
|
58
|
875
|
|
|
876
|
|
|
877 ngx_int_t
|
|
|
878 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
|
879 {
|
|
|
880 ngx_uint_t i, n;
|
|
160
|
881 ngx_hash_key_t *key;
|
|
|
882 ngx_hash_init_t hash;
|
|
58
|
883 ngx_http_variable_t *v, *av;
|
|
|
884 ngx_http_core_main_conf_t *cmcf;
|
|
|
885
|
|
|
886 /* set the handlers for the indexed http variables */
|
|
|
887
|
|
|
888 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
889
|
|
|
890 v = cmcf->variables.elts;
|
|
160
|
891 key = cmcf->variables_keys->keys.elts;
|
|
58
|
892
|
|
|
893 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
894
|
|
160
|
895 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
58
|
896
|
|
160
|
897 if (v[i].name.len == key[n].key.len
|
|
|
898 && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len)
|
|
58
|
899 == 0)
|
|
|
900 {
|
|
160
|
901 av = key[n].value;
|
|
|
902
|
|
|
903 v[i].handler = av->handler;
|
|
|
904 v[i].data = av->data;
|
|
76
|
905
|
|
160
|
906 av->flags |= NGX_HTTP_VAR_INDEXED;
|
|
|
907 v[i].flags = av->flags;
|
|
58
|
908
|
|
160
|
909 av->index = i;
|
|
82
|
910
|
|
58
|
911 goto next;
|
|
|
912 }
|
|
|
913 }
|
|
|
914
|
|
|
915 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
126
|
916 v[i].handler = ngx_http_variable_unknown_header_in;
|
|
|
917 v[i].data = (uintptr_t) &v[i].name;
|
|
|
918
|
|
|
919 continue;
|
|
|
920 }
|
|
|
921
|
|
|
922 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
|
|
|
923 v[i].handler = ngx_http_variable_unknown_header_out;
|
|
58
|
924 v[i].data = (uintptr_t) &v[i].name;
|
|
|
925
|
|
|
926 continue;
|
|
|
927 }
|
|
|
928
|
|
|
929 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
930 "unknown \"%V\" variable", &v[i].name);
|
|
|
931
|
|
|
932 return NGX_ERROR;
|
|
|
933
|
|
|
934 next:
|
|
|
935 continue;
|
|
|
936 }
|
|
|
937
|
|
|
938
|
|
160
|
939 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
|
940 av = key[n].value;
|
|
|
941
|
|
|
942 if (av->flags & NGX_HTTP_VAR_NOHASH) {
|
|
|
943 key[n].key.data = NULL;
|
|
132
|
944 }
|
|
|
945 }
|
|
|
946
|
|
|
947
|
|
160
|
948 hash.hash = &cmcf->variables_hash;
|
|
|
949 hash.key = ngx_hash_key;
|
|
|
950 hash.max_size = cmcf->variables_hash_max_size;
|
|
|
951 hash.bucket_size = cmcf->variables_hash_bucket_size;
|
|
|
952 hash.name = "variables_hash";
|
|
|
953 hash.pool = cf->pool;
|
|
|
954 hash.temp_pool = NULL;
|
|
58
|
955
|
|
160
|
956 if (ngx_hash_init(&hash, cmcf->variables_keys->keys.elts,
|
|
|
957 cmcf->variables_keys->keys.nelts)
|
|
130
|
958 != NGX_OK)
|
|
58
|
959 {
|
|
|
960 return NGX_ERROR;
|
|
|
961 }
|
|
|
962
|
|
160
|
963 cmcf->variables_keys = NULL;
|
|
58
|
964
|
|
|
965 return NGX_OK;
|
|
|
966 }
|
