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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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186
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15 static void ngx_http_variable_request_set_size(ngx_http_request_t *r,
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16 ngx_http_variable_value_t *v, uintptr_t data);
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122
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17 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r,
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18 ngx_http_variable_value_t *v, uintptr_t data);
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19 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
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20 ngx_http_variable_value_t *v, uintptr_t data);
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126
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21
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22 static ngx_int_t ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
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122
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23 ngx_http_variable_value_t *v, uintptr_t data);
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126
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24 static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
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25 ngx_http_variable_value_t *v, uintptr_t data);
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26 static ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
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27 ngx_str_t *var, ngx_list_part_t *part, size_t prefix);
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28
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122
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29 static ngx_int_t ngx_http_variable_host(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_addr(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_remote_port(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_addr(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_server_port(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_document_root(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_filename(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_request_method(ngx_http_request_t *r,
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44 ngx_http_variable_value_t *v, uintptr_t data);
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45 static ngx_int_t ngx_http_variable_remote_user(ngx_http_request_t *r,
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46 ngx_http_variable_value_t *v, uintptr_t data);
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160
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47 static ngx_int_t ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
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48 ngx_http_variable_value_t *v, uintptr_t data);
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178
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49 static ngx_int_t ngx_http_variable_request_completion(ngx_http_request_t *r,
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50 ngx_http_variable_value_t *v, uintptr_t data);
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48
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51
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52
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58
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53 /*
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54 * TODO:
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55 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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56 * REMOTE_HOST (null), REMOTE_IDENT (null),
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57 * SERVER_SOFTWARE
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58 *
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120
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59 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
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58
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60 */
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48
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61
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58
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62 static ngx_http_variable_t ngx_http_core_variables[] = {
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63
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186
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64 { ngx_string("http_host"), NULL, ngx_http_variable_header,
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82
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65 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
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48
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66
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186
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67 { ngx_string("http_user_agent"), NULL, ngx_http_variable_header,
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82
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68 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
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58
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69
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186
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70 { ngx_string("http_referer"), NULL, ngx_http_variable_header,
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82
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71 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
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48
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72
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73 #if (NGX_HTTP_GZIP)
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186
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74 { ngx_string("http_via"), NULL, ngx_http_variable_header,
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82
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75 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
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48
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76 #endif
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77
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78 #if (NGX_HTTP_PROXY)
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186
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79 { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_header,
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82
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80 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
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48
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81 #endif
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82
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186
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83 { ngx_string("http_cookie"), NULL, ngx_http_variable_headers,
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82
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84 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
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64
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85
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186
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86 { ngx_string("content_length"), NULL, ngx_http_variable_header,
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82
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87 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
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58
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88
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186
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89 { ngx_string("content_type"), NULL, ngx_http_variable_header,
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82
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90 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
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58
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91
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186
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92 { ngx_string("host"), NULL, ngx_http_variable_host, 0, 0, 0 },
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58
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93
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186
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94 { ngx_string("remote_addr"), NULL, ngx_http_variable_remote_addr, 0, 0, 0 },
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48
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95
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186
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96 { ngx_string("remote_port"), NULL, ngx_http_variable_remote_port, 0, 0, 0 },
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58
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97
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186
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98 { ngx_string("server_addr"), NULL, ngx_http_variable_server_addr, 0, 0, 0 },
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58
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99
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186
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100 { ngx_string("server_port"), NULL, ngx_http_variable_server_port, 0, 0, 0 },
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58
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101
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186
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102 { ngx_string("server_protocol"), NULL, ngx_http_variable_request,
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82
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103 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
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58
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104
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186
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105 { ngx_string("request_uri"), NULL, ngx_http_variable_request,
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82
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106 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
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48
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107
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186
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108 { ngx_string("uri"), NULL, ngx_http_variable_request,
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109 offsetof(ngx_http_request_t, uri),
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110 NGX_HTTP_VAR_NOCACHABLE, 0 },
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111
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112 { ngx_string("document_uri"), NULL, ngx_http_variable_request,
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122
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113 offsetof(ngx_http_request_t, uri),
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114 NGX_HTTP_VAR_NOCACHABLE, 0 },
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115
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186
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116 { ngx_string("request"), NULL, ngx_http_variable_request,
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118
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117 offsetof(ngx_http_request_t, request_line), 0, 0 },
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118
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186
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119 { ngx_string("document_root"), NULL,
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120 ngx_http_variable_document_root, 0, 0, 0 },
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58
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121
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186
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122 { ngx_string("query_string"), NULL, ngx_http_variable_request,
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58
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123 offsetof(ngx_http_request_t, args),
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82
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124 NGX_HTTP_VAR_NOCACHABLE, 0 },
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48
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125
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186
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126 { ngx_string("args"), NULL, ngx_http_variable_request,
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138
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127 offsetof(ngx_http_request_t, args),
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128 NGX_HTTP_VAR_NOCACHABLE, 0 },
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129
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186
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130 { ngx_string("request_filename"), NULL,
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131 ngx_http_variable_request_filename, 0,
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82
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132 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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133
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186
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134 { ngx_string("server_name"), NULL, ngx_http_variable_request,
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82
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135 offsetof(ngx_http_request_t, server_name), 0, 0 },
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58
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136
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186
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137 { ngx_string("request_method"), NULL,
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138 ngx_http_variable_request_method, 0, 0, 0 },
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58
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139
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186
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140 { ngx_string("remote_user"), NULL, ngx_http_variable_remote_user, 0, 0, 0 },
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58
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141
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186
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142 { ngx_string("body_bytes_sent"), NULL, ngx_http_variable_body_bytes_sent,
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160
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143 0, 0, 0 },
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144
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186
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145 { ngx_string("request_completion"), NULL,
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146 ngx_http_variable_request_completion,
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178
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147 0, 0, 0 },
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148
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186
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149 { ngx_string("limit_rate"), ngx_http_variable_request_set_size,
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150 ngx_http_variable_request,
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151 offsetof(ngx_http_request_t, limit_rate),
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152 NGX_HTTP_VAR_CHANGABLE|NGX_HTTP_VAR_NOCACHABLE, 0 },
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153
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154 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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48
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155 };
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156
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157
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126
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158 ngx_http_variable_value_t ngx_http_variable_null_value =
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159 ngx_http_variable("");
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160 ngx_http_variable_value_t ngx_http_variable_true_value =
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161 ngx_http_variable("1");
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162
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163
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48
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164 ngx_http_variable_t *
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58
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165 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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166 {
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160
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167 ngx_int_t rc;
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58
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168 ngx_uint_t i;
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160
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169 ngx_hash_key_t *key;
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58
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170 ngx_http_variable_t *v;
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171 ngx_http_core_main_conf_t *cmcf;
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172
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173 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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174
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160
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175 key = cmcf->variables_keys->keys.elts;
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176 for (i = 0; i < cmcf->variables_keys->keys.nelts; i++) {
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177 if (name->len != key[i].key.len
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178 || ngx_strncasecmp(name->data, key[i].key.data, name->len) != 0)
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58
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179 {
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180 continue;
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181 }
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182
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160
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183 v = key[i].value;
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184
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185 if (!(v->flags & NGX_HTTP_VAR_CHANGABLE)) {
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58
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186 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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187 "the duplicate \"%V\" variable", name);
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188 return NULL;
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189 }
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190
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160
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191 return v;
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58
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192 }
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193
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160
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194 v = ngx_palloc(cf->pool, sizeof(ngx_http_variable_t));
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58
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195 if (v == NULL) {
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196 return NULL;
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197 }
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198
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199 v->name.len = name->len;
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200 v->name.data = ngx_palloc(cf->pool, name->len);
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201 if (v->name.data == NULL) {
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202 return NULL;
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203 }
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204
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205 for (i = 0; i < name->len; i++) {
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206 v->name.data[i] = ngx_tolower(name->data[i]);
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207 }
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208
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186
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209 v->set_handler = NULL;
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210 v->get_handler = NULL;
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58
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211 v->data = 0;
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212 v->flags = flags;
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82
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213 v->index = 0;
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58
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214
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160
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215 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0);
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216
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217 if (rc == NGX_ERROR) {
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218 return NULL;
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219 }
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220
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221 if (rc == NGX_BUSY) {
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222 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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223 "conflicting variable name \"%V\"", name);
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224 return NULL;
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225 }
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226
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58
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227 return v;
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228 }
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229
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230
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231 ngx_int_t
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232 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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48
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233 {
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50
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234 ngx_uint_t i;
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235 ngx_http_variable_t *v;
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48
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236 ngx_http_core_main_conf_t *cmcf;
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237
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238 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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239
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50
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240 v = cmcf->variables.elts;
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241
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242 if (v == NULL) {
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48
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243 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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244 sizeof(ngx_http_variable_t)) == NGX_ERROR)
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245 {
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58
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246 return NGX_ERROR;
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48
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247 }
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50
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248
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249 } else {
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250 for (i = 0; i < cmcf->variables.nelts; i++) {
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251 if (name->len != v[i].name.len
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252 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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253 {
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254 continue;
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255 }
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256
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58
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257 return i;
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50
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258 }
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48
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259 }
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260
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50
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261 v = ngx_array_push(&cmcf->variables);
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262 if (v == NULL) {
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58
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263 return NGX_ERROR;
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48
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264 }
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265
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50
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266 v->name.len = name->len;
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267 v->name.data = ngx_palloc(cf->pool, name->len);
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268 if (v->name.data == NULL) {
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58
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269 return NGX_ERROR;
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50
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270 }
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48
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271
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50
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272 for (i = 0; i < name->len; i++) {
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58
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273 v->name.data[i] = ngx_tolower(name->data[i]);
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50
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274 }
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275
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186
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276 v->set_handler = NULL;
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277 v->get_handler = NULL;
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50
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278 v->data = 0;
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58
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279 v->flags = 0;
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82
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280 v->index = cmcf->variables.nelts - 1;
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50
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281
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58
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282 return cmcf->variables.nelts - 1;
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48
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283 }
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284
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285
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286 ngx_http_variable_value_t *
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287 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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288 {
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50
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289 ngx_http_variable_t *v;
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48
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290 ngx_http_core_main_conf_t *cmcf;
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291
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292 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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293
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102
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294 if (cmcf->variables.nelts <= index) {
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48
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295 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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296 "unknown variable index: %d", index);
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297 return NULL;
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298 }
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299
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122
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300 if (r->variables[index].not_found || r->variables[index].valid) {
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301 return &r->variables[index];
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50
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302 }
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48
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303
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50
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304 v = cmcf->variables.elts;
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48
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305
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186
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306 if (v[index].get_handler(r, &r->variables[index], v[index].data)
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307 == NGX_OK)
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308 {
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122
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309 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
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310 r->variables[index].no_cachable = 1;
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48
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311 }
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122
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312
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313 return &r->variables[index];
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48
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314 }
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315
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122
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316 return NULL;
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317 }
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318
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319
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320 ngx_http_variable_value_t *
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321 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
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322 {
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323 ngx_http_variable_value_t *v;
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324
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325 v = &r->variables[index];
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326
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327 if (v->valid) {
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328 if (!v->no_cachable) {
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329 return v;
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330 }
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331
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332 v->valid = 0;
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333 v->not_found = 0;
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58
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334 }
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50
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335
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122
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336 return ngx_http_get_indexed_variable(r, index);
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48
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337 }
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338
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339
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340 ngx_http_variable_value_t *
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184
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341 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key,
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342 ngx_uint_t nowarn)
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48
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343 {
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50
|
344 ngx_http_variable_t *v;
|
|
122
|
345 ngx_http_variable_value_t *vv;
|
|
48
|
346 ngx_http_core_main_conf_t *cmcf;
|
|
|
347
|
|
|
348 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
349
|
|
160
|
350 v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len);
|
|
48
|
351
|
|
160
|
352 if (v) {
|
|
|
353 if (v->flags & NGX_HTTP_VAR_INDEXED) {
|
|
|
354 return ngx_http_get_indexed_variable(r, v->index);
|
|
68
|
355
|
|
|
356 } else {
|
|
48
|
357
|
|
122
|
358 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
50
|
359
|
|
186
|
360 if (vv && v->get_handler(r, vv, v->data) == NGX_OK) {
|
|
122
|
361 return vv;
|
|
|
362 }
|
|
58
|
363
|
|
122
|
364 return NULL;
|
|
|
365 }
|
|
58
|
366 }
|
|
|
367
|
|
|
368 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
369 if (vv == NULL) {
|
|
|
370 return NULL;
|
|
|
371 }
|
|
|
372
|
|
122
|
373 if (ngx_strncmp(name->data, "http_", 5) == 0) {
|
|
48
|
374
|
|
126
|
375 if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
|
|
|
376 == NGX_OK)
|
|
|
377 {
|
|
|
378 return vv;
|
|
|
379 }
|
|
|
380
|
|
|
381 return NULL;
|
|
|
382 }
|
|
|
383
|
|
|
384 if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
|
|
|
385
|
|
|
386 if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
|
|
|
387 == NGX_OK)
|
|
122
|
388 {
|
|
|
389 return vv;
|
|
|
390 }
|
|
48
|
391
|
|
|
392 return NULL;
|
|
|
393 }
|
|
|
394
|
|
184
|
395 vv->not_found = 1;
|
|
122
|
396
|
|
184
|
397 if (nowarn == 0) {
|
|
|
398 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
399 "unknown \"%V\" variable", name);
|
|
|
400 }
|
|
48
|
401
|
|
50
|
402 return vv;
|
|
48
|
403 }
|
|
|
404
|
|
|
405
|
|
122
|
406 static ngx_int_t
|
|
|
407 ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
408 uintptr_t data)
|
|
|
409 {
|
|
|
410 ngx_str_t *s;
|
|
|
411
|
|
|
412 s = (ngx_str_t *) ((char *) r + data);
|
|
|
413
|
|
|
414 if (s->data) {
|
|
|
415 v->len = s->len;
|
|
|
416 v->valid = 1;
|
|
|
417 v->no_cachable = 0;
|
|
|
418 v->not_found = 0;
|
|
|
419 v->data = s->data;
|
|
|
420
|
|
|
421 } else {
|
|
|
422 v->not_found = 1;
|
|
|
423 }
|
|
|
424
|
|
|
425 return NGX_OK;
|
|
|
426 }
|
|
|
427
|
|
|
428
|
|
186
|
429 static void
|
|
|
430 ngx_http_variable_request_set_size(ngx_http_request_t *r,
|
|
|
431 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
432 {
|
|
|
433 ssize_t s, *sp;
|
|
|
434 ngx_str_t val;
|
|
|
435
|
|
|
436 val.len = v->len & 0xffff;
|
|
|
437 val.data = v->data;
|
|
|
438
|
|
|
439 s = ngx_parse_size(&val);
|
|
|
440
|
|
|
441 if (s == NGX_ERROR) {
|
|
|
442 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
443 "invalid size \"%V\"", &val);
|
|
|
444 return;
|
|
|
445 }
|
|
|
446
|
|
|
447 sp = (ssize_t *) ((char *) r + data);
|
|
|
448
|
|
|
449 *sp = s;
|
|
|
450
|
|
|
451 return;
|
|
|
452 }
|
|
|
453
|
|
|
454
|
|
122
|
455 static ngx_int_t
|
|
|
456 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
457 uintptr_t data)
|
|
64
|
458 {
|
|
122
|
459 ngx_table_elt_t *h;
|
|
|
460
|
|
|
461 h = *(ngx_table_elt_t **) ((char *) r + data);
|
|
|
462
|
|
|
463 if (h) {
|
|
|
464 v->len = h->value.len;
|
|
|
465 v->valid = 1;
|
|
|
466 v->no_cachable = 0;
|
|
|
467 v->not_found = 0;
|
|
|
468 v->data = h->value.data;
|
|
|
469
|
|
|
470 } else {
|
|
|
471 v->not_found = 1;
|
|
|
472 }
|
|
|
473
|
|
|
474 return NGX_OK;
|
|
|
475 }
|
|
|
476
|
|
|
477
|
|
|
478 static ngx_int_t
|
|
|
479 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
480 uintptr_t data)
|
|
|
481 {
|
|
|
482 size_t len;
|
|
|
483 u_char *p;
|
|
|
484 ngx_uint_t i;
|
|
|
485 ngx_array_t *a;
|
|
|
486 ngx_table_elt_t **h;
|
|
64
|
487
|
|
|
488 a = (ngx_array_t *) ((char *) r + data);
|
|
|
489
|
|
|
490 if (a->nelts == 0) {
|
|
122
|
491 v->not_found = 1;
|
|
|
492 return NGX_OK;
|
|
64
|
493 }
|
|
|
494
|
|
122
|
495 v->valid = 1;
|
|
|
496 v->no_cachable = 0;
|
|
|
497 v->not_found = 0;
|
|
64
|
498
|
|
|
499 h = a->elts;
|
|
|
500
|
|
|
501 if (a->nelts == 1) {
|
|
122
|
502 v->len = (*h)->value.len;
|
|
|
503 v->data = (*h)->value.data;
|
|
64
|
504
|
|
122
|
505 return NGX_OK;
|
|
64
|
506 }
|
|
|
507
|
|
122
|
508 len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
|
509
|
|
|
510 for (i = 0; i < a->nelts; i++) {
|
|
|
511 len += h[i]->value.len + sizeof("; ") - 1;
|
|
64
|
512 }
|
|
|
513
|
|
122
|
514 p = ngx_palloc(r->pool, len);
|
|
|
515 if (p == NULL) {
|
|
|
516 return NGX_ERROR;
|
|
|
517 }
|
|
|
518
|
|
|
519 v->len = len;
|
|
|
520 v->data = p;
|
|
64
|
521
|
|
|
522 for (i = 0; /* void */ ; i++) {
|
|
122
|
523 p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
|
|
64
|
524
|
|
|
525 if (i == a->nelts - 1) {
|
|
|
526 break;
|
|
|
527 }
|
|
|
528
|
|
|
529 *p++ = ';'; *p++ = ' ';
|
|
|
530 }
|
|
|
531
|
|
122
|
532 return NGX_OK;
|
|
64
|
533 }
|
|
|
534
|
|
|
535
|
|
122
|
536 static ngx_int_t
|
|
126
|
537 ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
|
538 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
539 {
|
|
|
540 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
541 &r->headers_in.headers.part,
|
|
|
542 sizeof("http_") - 1);
|
|
|
543 }
|
|
|
544
|
|
|
545
|
|
|
546 static ngx_int_t
|
|
|
547 ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
|
122
|
548 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
549 {
|
|
126
|
550 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
551 &r->headers_out.headers.part,
|
|
|
552 sizeof("sent_http_") - 1);
|
|
|
553 }
|
|
50
|
554
|
|
126
|
555
|
|
|
556 static ngx_int_t
|
|
|
557 ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
|
|
|
558 ngx_list_part_t *part, size_t prefix)
|
|
|
559 {
|
|
122
|
560 u_char ch;
|
|
|
561 ngx_uint_t i, n;
|
|
|
562 ngx_table_elt_t *header;
|
|
48
|
563
|
|
|
564 header = part->elts;
|
|
|
565
|
|
|
566 for (i = 0; /* void */ ; i++) {
|
|
|
567
|
|
|
568 if (i >= part->nelts) {
|
|
|
569 if (part->next == NULL) {
|
|
|
570 break;
|
|
|
571 }
|
|
|
572
|
|
|
573 part = part->next;
|
|
|
574 header = part->elts;
|
|
|
575 i = 0;
|
|
|
576 }
|
|
|
577
|
|
126
|
578 for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
|
|
48
|
579 ch = header[i].key.data[n];
|
|
|
580
|
|
58
|
581 if (ch >= 'A' && ch <= 'Z') {
|
|
|
582 ch |= 0x20;
|
|
48
|
583
|
|
|
584 } else if (ch == '-') {
|
|
|
585 ch = '_';
|
|
|
586 }
|
|
|
587
|
|
126
|
588 if (var->data[n + prefix] != ch) {
|
|
48
|
589 break;
|
|
|
590 }
|
|
|
591 }
|
|
|
592
|
|
126
|
593 if (n + prefix == var->len) {
|
|
122
|
594 v->len = header[i].value.len;
|
|
|
595 v->valid = 1;
|
|
|
596 v->no_cachable = 0;
|
|
|
597 v->not_found = 0;
|
|
|
598 v->data = header[i].value.data;
|
|
48
|
599
|
|
122
|
600 return NGX_OK;
|
|
48
|
601 }
|
|
|
602 }
|
|
|
603
|
|
122
|
604 v->not_found = 1;
|
|
|
605
|
|
|
606 return NGX_OK;
|
|
58
|
607 }
|
|
|
608
|
|
|
609
|
|
122
|
610 static ngx_int_t
|
|
|
611 ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
612 uintptr_t data)
|
|
58
|
613 {
|
|
122
|
614 if (r->headers_in.host) {
|
|
|
615 v->len = r->headers_in.host_name_len;
|
|
|
616 v->data = r->headers_in.host->value.data;
|
|
58
|
617
|
|
122
|
618 } else {
|
|
|
619 v->len = r->server_name.len;
|
|
|
620 v->data = r->server_name.data;
|
|
58
|
621 }
|
|
|
622
|
|
122
|
623 v->valid = 1;
|
|
|
624 v->no_cachable = 0;
|
|
|
625 v->not_found = 0;
|
|
58
|
626
|
|
122
|
627 return NGX_OK;
|
|
48
|
628 }
|
|
|
629
|
|
|
630
|
|
122
|
631 static ngx_int_t
|
|
|
632 ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
|
633 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
634 {
|
|
122
|
635 v->len = r->connection->addr_text.len;
|
|
|
636 v->valid = 1;
|
|
|
637 v->no_cachable = 0;
|
|
|
638 v->not_found = 0;
|
|
|
639 v->data = r->connection->addr_text.data;
|
|
48
|
640
|
|
122
|
641 return NGX_OK;
|
|
48
|
642 }
|
|
|
643
|
|
|
644
|
|
122
|
645 static ngx_int_t
|
|
|
646 ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
|
647 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
648 {
|
|
122
|
649 ngx_uint_t port;
|
|
|
650 struct sockaddr_in *sin;
|
|
58
|
651
|
|
122
|
652 v->len = 0;
|
|
|
653 v->valid = 1;
|
|
|
654 v->no_cachable = 0;
|
|
|
655 v->not_found = 0;
|
|
58
|
656
|
|
122
|
657 v->data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
|
658 if (v->data == NULL) {
|
|
|
659 return NGX_ERROR;
|
|
58
|
660 }
|
|
|
661
|
|
|
662 /* AF_INET only */
|
|
126
|
663
|
|
58
|
664 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
|
665 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
126
|
666
|
|
58
|
667 port = ntohs(sin->sin_port);
|
|
126
|
668
|
|
58
|
669 if (port > 0 && port < 65536) {
|
|
122
|
670 v->len = ngx_sprintf(v->data, "%ui", port) - v->data;
|
|
58
|
671 }
|
|
|
672 }
|
|
|
673
|
|
122
|
674 return NGX_OK;
|
|
58
|
675 }
|
|
|
676
|
|
|
677
|
|
122
|
678 static ngx_int_t
|
|
|
679 ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
|
680 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
681 {
|
|
122
|
682 socklen_t len;
|
|
|
683 ngx_connection_t *c;
|
|
|
684 struct sockaddr_in sin;
|
|
48
|
685
|
|
122
|
686 v->data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
|
687 if (v->data == NULL) {
|
|
|
688 return NGX_ERROR;
|
|
58
|
689 }
|
|
|
690
|
|
|
691 c = r->connection;
|
|
|
692
|
|
|
693 if (r->in_addr == 0) {
|
|
|
694 len = sizeof(struct sockaddr_in);
|
|
|
695 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
|
696 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
|
697 ngx_socket_errno, "getsockname() failed");
|
|
122
|
698 return NGX_ERROR;
|
|
58
|
699 }
|
|
|
700
|
|
|
701 r->in_addr = sin.sin_addr.s_addr;
|
|
|
702 }
|
|
|
703
|
|
122
|
704 v->len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
|
705 v->data, INET_ADDRSTRLEN);
|
|
|
706 v->valid = 1;
|
|
|
707 v->no_cachable = 0;
|
|
|
708 v->not_found = 0;
|
|
48
|
709
|
|
122
|
710 return NGX_OK;
|
|
48
|
711 }
|
|
|
712
|
|
|
713
|
|
122
|
714 static ngx_int_t
|
|
|
715 ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
|
716 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
717 {
|
|
122
|
718 v->len = r->port_text->len - 1;
|
|
|
719 v->valid = 1;
|
|
|
720 v->no_cachable = 0;
|
|
|
721 v->not_found = 0;
|
|
|
722 v->data = r->port_text->data + 1;
|
|
58
|
723
|
|
122
|
724 return NGX_OK;
|
|
58
|
725 }
|
|
|
726
|
|
|
727
|
|
122
|
728 static ngx_int_t
|
|
|
729 ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
|
730 ngx_http_variable_value_t *v, uintptr_t data)
|
|
48
|
731 {
|
|
122
|
732 ngx_http_core_loc_conf_t *clcf;
|
|
58
|
733
|
|
|
734 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
735
|
|
122
|
736 v->len = clcf->root.len;
|
|
|
737 v->valid = 1;
|
|
|
738 v->no_cachable = 0;
|
|
|
739 v->not_found = 0;
|
|
|
740 v->data = clcf->root.data;
|
|
58
|
741
|
|
122
|
742 return NGX_OK;
|
|
58
|
743 }
|
|
|
744
|
|
|
745
|
|
122
|
746 static ngx_int_t
|
|
|
747 ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
|
748 ngx_http_variable_value_t *v, uintptr_t data)
|
|
58
|
749 {
|
|
122
|
750 ngx_str_t path;
|
|
48
|
751
|
|
122
|
752 if (ngx_http_map_uri_to_path(r, &path, 0) == NULL) {
|
|
|
753 return NGX_ERROR;
|
|
106
|
754 }
|
|
58
|
755
|
|
106
|
756 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
|
58
|
757
|
|
122
|
758 v->len = path.len - 1;
|
|
|
759 v->valid = 1;
|
|
|
760 v->no_cachable = 0;
|
|
|
761 v->not_found = 0;
|
|
|
762 v->data = path.data;
|
|
48
|
763
|
|
122
|
764 return NGX_OK;
|
|
48
|
765 }
|
|
|
766
|
|
|
767
|
|
122
|
768 static ngx_int_t
|
|
|
769 ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
|
770 ngx_http_variable_value_t *v, uintptr_t data)
|
|
110
|
771 {
|
|
122
|
772 if (r->method_name.data) {
|
|
|
773 if (r->upstream && r->upstream->method.len) {
|
|
|
774 v->len = r->upstream->method.len;
|
|
|
775 v->data = r->upstream->method.data;
|
|
110
|
776
|
|
122
|
777 } else {
|
|
|
778 v->len = r->method_name.len;
|
|
|
779 v->data = r->method_name.data;
|
|
|
780 }
|
|
|
781
|
|
|
782 v->valid = 1;
|
|
|
783 v->no_cachable = 0;
|
|
|
784 v->not_found = 0;
|
|
|
785
|
|
|
786 } else {
|
|
|
787 v->not_found = 1;
|
|
110
|
788 }
|
|
|
789
|
|
122
|
790 return NGX_OK;
|
|
110
|
791 }
|
|
|
792
|
|
|
793
|
|
122
|
794 static ngx_int_t
|
|
|
795 ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
|
796 ngx_http_variable_value_t *v, uintptr_t data)
|
|
88
|
797 {
|
|
122
|
798 ngx_int_t rc;
|
|
88
|
799
|
|
|
800 rc = ngx_http_auth_basic_user(r);
|
|
|
801
|
|
|
802 if (rc == NGX_DECLINED) {
|
|
122
|
803 v->not_found = 1;
|
|
|
804 return NGX_OK;
|
|
88
|
805 }
|
|
|
806
|
|
|
807 if (rc == NGX_ERROR) {
|
|
122
|
808 return NGX_ERROR;
|
|
88
|
809 }
|
|
|
810
|
|
122
|
811 v->len = r->headers_in.user.len;
|
|
|
812 v->valid = 1;
|
|
|
813 v->no_cachable = 0;
|
|
|
814 v->not_found = 0;
|
|
|
815 v->data = r->headers_in.user.data;
|
|
120
|
816
|
|
122
|
817 return NGX_OK;
|
|
120
|
818 }
|
|
|
819
|
|
|
820
|
|
160
|
821 static ngx_int_t
|
|
|
822 ngx_http_variable_body_bytes_sent(ngx_http_request_t *r,
|
|
|
823 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
824 {
|
|
|
825 off_t sent;
|
|
|
826 u_char *p;
|
|
|
827
|
|
|
828 sent = r->connection->sent - r->header_size;
|
|
|
829
|
|
|
830 if (sent < 0) {
|
|
|
831 sent = 0;
|
|
|
832 }
|
|
|
833
|
|
|
834 p = ngx_palloc(r->pool, NGX_OFF_T_LEN);
|
|
|
835 if (p == NULL) {
|
|
|
836 return NGX_ERROR;
|
|
|
837 }
|
|
|
838
|
|
|
839 v->len = ngx_sprintf(p, "%O", sent) - p;
|
|
|
840 v->valid = 1;
|
|
|
841 v->no_cachable = 0;
|
|
|
842 v->not_found = 0;
|
|
|
843 v->data = p;
|
|
|
844
|
|
|
845 return NGX_OK;
|
|
|
846 }
|
|
|
847
|
|
|
848
|
|
178
|
849 static ngx_int_t
|
|
|
850 ngx_http_variable_request_completion(ngx_http_request_t *r,
|
|
|
851 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
852 {
|
|
|
853 if (r->request_complete) {
|
|
|
854 v->len = 2;
|
|
|
855 v->valid = 1;
|
|
|
856 v->no_cachable = 0;
|
|
|
857 v->not_found = 0;
|
|
|
858 v->data = (u_char *) "OK";
|
|
|
859
|
|
|
860 return NGX_OK;
|
|
|
861 }
|
|
|
862
|
|
|
863 v->len = 0;
|
|
|
864 v->valid = 1;
|
|
|
865 v->no_cachable = 0;
|
|
|
866 v->not_found = 0;
|
|
|
867 v->data = (u_char *) "";
|
|
|
868
|
|
|
869 return NGX_OK;
|
|
|
870 }
|
|
|
871
|
|
|
872
|
|
48
|
873 ngx_int_t
|
|
58
|
874 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
48
|
875 {
|
|
160
|
876 ngx_int_t rc;
|
|
|
877 ngx_http_variable_t *v;
|
|
50
|
878 ngx_http_core_main_conf_t *cmcf;
|
|
48
|
879
|
|
58
|
880 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
881
|
|
160
|
882 cmcf->variables_keys = ngx_pcalloc(cf->temp_pool,
|
|
|
883 sizeof(ngx_hash_keys_arrays_t));
|
|
|
884 if (cmcf->variables_keys == NULL) {
|
|
|
885 return NGX_ERROR;
|
|
|
886 }
|
|
|
887
|
|
|
888 cmcf->variables_keys->pool = cf->pool;
|
|
|
889 cmcf->variables_keys->temp_pool = cf->pool;
|
|
|
890
|
|
|
891 if (ngx_hash_keys_array_init(cmcf->variables_keys, NGX_HASH_SMALL)
|
|
|
892 != NGX_OK)
|
|
58
|
893 {
|
|
48
|
894 return NGX_ERROR;
|
|
|
895 }
|
|
|
896
|
|
160
|
897 for (v = ngx_http_core_variables; v->name.len; v++) {
|
|
|
898 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v,
|
|
|
899 NGX_HASH_READONLY_KEY);
|
|
|
900
|
|
|
901 if (rc == NGX_OK) {
|
|
|
902 continue;
|
|
48
|
903 }
|
|
|
904
|
|
160
|
905 if (rc == NGX_BUSY) {
|
|
|
906 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
907 "conflicting variable name \"%V\"", &v->name);
|
|
|
908 }
|
|
|
909
|
|
|
910 return NGX_ERROR;
|
|
48
|
911 }
|
|
|
912
|
|
|
913 return NGX_OK;
|
|
|
914 }
|
|
58
|
915
|
|
|
916
|
|
|
917 ngx_int_t
|
|
|
918 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
|
919 {
|
|
|
920 ngx_uint_t i, n;
|
|
160
|
921 ngx_hash_key_t *key;
|
|
|
922 ngx_hash_init_t hash;
|
|
58
|
923 ngx_http_variable_t *v, *av;
|
|
|
924 ngx_http_core_main_conf_t *cmcf;
|
|
|
925
|
|
|
926 /* set the handlers for the indexed http variables */
|
|
|
927
|
|
|
928 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
929
|
|
|
930 v = cmcf->variables.elts;
|
|
160
|
931 key = cmcf->variables_keys->keys.elts;
|
|
58
|
932
|
|
|
933 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
934
|
|
160
|
935 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
58
|
936
|
|
160
|
937 if (v[i].name.len == key[n].key.len
|
|
|
938 && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len)
|
|
58
|
939 == 0)
|
|
|
940 {
|
|
160
|
941 av = key[n].value;
|
|
|
942
|
|
186
|
943 v[i].get_handler = av->get_handler;
|
|
160
|
944 v[i].data = av->data;
|
|
76
|
945
|
|
160
|
946 av->flags |= NGX_HTTP_VAR_INDEXED;
|
|
|
947 v[i].flags = av->flags;
|
|
58
|
948
|
|
160
|
949 av->index = i;
|
|
82
|
950
|
|
58
|
951 goto next;
|
|
|
952 }
|
|
|
953 }
|
|
|
954
|
|
|
955 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
186
|
956 v[i].get_handler = ngx_http_variable_unknown_header_in;
|
|
126
|
957 v[i].data = (uintptr_t) &v[i].name;
|
|
|
958
|
|
|
959 continue;
|
|
|
960 }
|
|
|
961
|
|
|
962 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
|
|
186
|
963 v[i].get_handler = ngx_http_variable_unknown_header_out;
|
|
58
|
964 v[i].data = (uintptr_t) &v[i].name;
|
|
|
965
|
|
|
966 continue;
|
|
|
967 }
|
|
|
968
|
|
|
969 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
970 "unknown \"%V\" variable", &v[i].name);
|
|
|
971
|
|
|
972 return NGX_ERROR;
|
|
|
973
|
|
|
974 next:
|
|
|
975 continue;
|
|
|
976 }
|
|
|
977
|
|
|
978
|
|
160
|
979 for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) {
|
|
|
980 av = key[n].value;
|
|
|
981
|
|
|
982 if (av->flags & NGX_HTTP_VAR_NOHASH) {
|
|
|
983 key[n].key.data = NULL;
|
|
132
|
984 }
|
|
|
985 }
|
|
|
986
|
|
|
987
|
|
160
|
988 hash.hash = &cmcf->variables_hash;
|
|
|
989 hash.key = ngx_hash_key;
|
|
|
990 hash.max_size = cmcf->variables_hash_max_size;
|
|
|
991 hash.bucket_size = cmcf->variables_hash_bucket_size;
|
|
|
992 hash.name = "variables_hash";
|
|
|
993 hash.pool = cf->pool;
|
|
|
994 hash.temp_pool = NULL;
|
|
58
|
995
|
|
160
|
996 if (ngx_hash_init(&hash, cmcf->variables_keys->keys.elts,
|
|
|
997 cmcf->variables_keys->keys.nelts)
|
|
130
|
998 != NGX_OK)
|
|
58
|
999 {
|
|
|
1000 return NGX_ERROR;
|
|
|
1001 }
|
|
|
1002
|
|
160
|
1003 cmcf->variables_keys = NULL;
|
|
58
|
1004
|
|
|
1005 return NGX_OK;
|
|
|
1006 }
|
