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48
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10 #include <ngx_http.h>
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11
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12
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58
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13 static ngx_http_variable_value_t *
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14 ngx_http_variable_request(ngx_http_request_t *r, uintptr_t data);
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48
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15 static ngx_http_variable_value_t *
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16 ngx_http_variable_header(ngx_http_request_t *r, uintptr_t data);
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17 static ngx_http_variable_value_t *
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64
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18 ngx_http_variable_headers(ngx_http_request_t *r, uintptr_t data);
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19 static ngx_http_variable_value_t *
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50
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20 ngx_http_variable_unknown_header(ngx_http_request_t *r, uintptr_t data);
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48
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21 static ngx_http_variable_value_t *
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58
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22 ngx_http_variable_host(ngx_http_request_t *r, uintptr_t data);
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23 static ngx_http_variable_value_t *
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48
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24 ngx_http_variable_remote_addr(ngx_http_request_t *r, uintptr_t data);
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25 static ngx_http_variable_value_t *
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58
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26 ngx_http_variable_remote_port(ngx_http_request_t *r, uintptr_t data);
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27 static ngx_http_variable_value_t *
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28 ngx_http_variable_server_addr(ngx_http_request_t *r, uintptr_t data);
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48
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29 static ngx_http_variable_value_t *
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58
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30 ngx_http_variable_server_port(ngx_http_request_t *r, uintptr_t data);
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31 static ngx_http_variable_value_t *
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32 ngx_http_variable_document_root(ngx_http_request_t *r, uintptr_t data);
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33 static ngx_http_variable_value_t *
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34 ngx_http_variable_request_filename(ngx_http_request_t *r, uintptr_t data);
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88
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35 static ngx_http_variable_value_t *
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110
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36 ngx_http_variable_request_method(ngx_http_request_t *r, uintptr_t data);
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37 static ngx_http_variable_value_t *
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88
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38 ngx_http_variable_remote_user(ngx_http_request_t *r, uintptr_t data);
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120
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39 static ngx_http_variable_value_t *
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40 ngx_http_variable_sent(ngx_http_request_t *r, uintptr_t data);
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48
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41
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42
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58
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43 /*
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44 * TODO:
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45 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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46 * REMOTE_HOST (null), REMOTE_IDENT (null),
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47 * SERVER_SOFTWARE
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48 *
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120
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49 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
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58
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50 */
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48
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51
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58
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52 static ngx_http_variable_t ngx_http_core_variables[] = {
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53
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54 { ngx_string("http_host"), ngx_http_variable_header,
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82
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55 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
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48
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56
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58
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57 { ngx_string("http_user_agent"), ngx_http_variable_header,
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82
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58 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
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58
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59
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60 { ngx_string("http_referer"), ngx_http_variable_header,
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82
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61 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
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48
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62
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63 #if (NGX_HTTP_GZIP)
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58
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64 { ngx_string("http_via"), ngx_http_variable_header,
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82
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65 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
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48
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66 #endif
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67
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68 #if (NGX_HTTP_PROXY)
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58
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69 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
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82
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70 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
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48
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71 #endif
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72
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64
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73 { ngx_string("http_cookie"), ngx_http_variable_headers,
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82
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74 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
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64
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75
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58
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76 { ngx_string("content_length"), ngx_http_variable_header,
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82
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77 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
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58
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78
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79 { ngx_string("content_type"), ngx_http_variable_header,
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82
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80 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
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58
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81
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82
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82 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 },
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58
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83
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82
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84 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 },
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48
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85
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82
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86 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 },
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58
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87
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82
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88 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 },
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58
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89
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82
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90 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 },
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58
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91
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92 { ngx_string("server_protocol"), ngx_http_variable_request,
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82
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93 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
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58
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94
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95 { ngx_string("request_uri"), ngx_http_variable_request,
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82
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96 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
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48
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97
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58
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98 { ngx_string("document_uri"), ngx_http_variable_request,
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82
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99 offsetof(ngx_http_request_t, uri), 0, 0 },
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58
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100
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118
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101 { ngx_string("request"), ngx_http_variable_request,
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102 offsetof(ngx_http_request_t, request_line), 0, 0 },
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103
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82
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104 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 },
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58
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105
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106 { ngx_string("query_string"), ngx_http_variable_request,
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107 offsetof(ngx_http_request_t, args),
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82
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108 NGX_HTTP_VAR_NOCACHABLE, 0 },
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48
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109
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58
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110 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
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82
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111 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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112
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113 { ngx_string("server_name"), ngx_http_variable_request,
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82
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114 offsetof(ngx_http_request_t, server_name), 0, 0 },
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58
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115
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110
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116 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 },
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58
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117
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88
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118 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 },
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58
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119
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120
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120 { ngx_string("sent"), ngx_http_variable_sent, 0, 0, 0 },
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121
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122 { ngx_string("apache_sent"), ngx_http_variable_sent, 1, 0, 0 },
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123
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82
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124 { ngx_null_string, NULL, 0, 0, 0 }
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48
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125 };
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126
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127
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128 ngx_http_variable_t *
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58
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129 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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130 {
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131 ngx_uint_t i;
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132 ngx_http_variable_t *v;
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133 ngx_http_core_main_conf_t *cmcf;
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134
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135 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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136
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137 v = cmcf->all_variables.elts;
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138 for (i = 0; i < cmcf->all_variables.nelts; i++) {
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139 if (name->len != v[i].name.len
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140 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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141 {
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142 continue;
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143 }
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144
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145 if (!(v[i].flags & NGX_HTTP_VAR_CHANGABLE)) {
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146 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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147 "the duplicate \"%V\" variable", name);
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148 return NULL;
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149 }
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150
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151 return &v[i];
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152 }
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153
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154 v = ngx_array_push(&cmcf->all_variables);
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155 if (v == NULL) {
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156 return NULL;
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157 }
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158
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159 v->name.len = name->len;
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160 v->name.data = ngx_palloc(cf->pool, name->len);
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161 if (v->name.data == NULL) {
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162 return NULL;
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163 }
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164
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165 for (i = 0; i < name->len; i++) {
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166 v->name.data[i] = ngx_tolower(name->data[i]);
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167 }
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168
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169 v->handler = NULL;
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170 v->data = 0;
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171 v->flags = flags;
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82
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172 v->index = 0;
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58
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173
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174 return v;
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175 }
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176
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177
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178 ngx_int_t
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179 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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48
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180 {
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50
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181 ngx_uint_t i;
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182 ngx_http_variable_t *v;
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48
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183 ngx_http_core_main_conf_t *cmcf;
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184
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185 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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186
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50
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187 v = cmcf->variables.elts;
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188
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189 if (v == NULL) {
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48
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190 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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191 sizeof(ngx_http_variable_t)) == NGX_ERROR)
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192 {
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58
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193 return NGX_ERROR;
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48
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194 }
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50
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195
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196 } else {
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197 for (i = 0; i < cmcf->variables.nelts; i++) {
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198 if (name->len != v[i].name.len
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199 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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200 {
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201 continue;
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202 }
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203
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58
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204 return i;
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50
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205 }
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48
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206 }
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207
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50
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208 v = ngx_array_push(&cmcf->variables);
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209 if (v == NULL) {
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58
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210 return NGX_ERROR;
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48
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211 }
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212
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50
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213 v->name.len = name->len;
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214 v->name.data = ngx_palloc(cf->pool, name->len);
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215 if (v->name.data == NULL) {
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58
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216 return NGX_ERROR;
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50
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217 }
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48
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218
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50
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219 for (i = 0; i < name->len; i++) {
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58
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220 v->name.data[i] = ngx_tolower(name->data[i]);
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50
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221 }
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222
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223 v->handler = NULL;
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224 v->data = 0;
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58
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225 v->flags = 0;
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82
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226 v->index = cmcf->variables.nelts - 1;
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50
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227
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58
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228 return cmcf->variables.nelts - 1;
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48
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229 }
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230
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231
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232 ngx_http_variable_value_t *
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233 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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234 {
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50
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235 ngx_http_variable_t *v;
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236 ngx_http_variable_value_t *vv;
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48
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237 ngx_http_core_main_conf_t *cmcf;
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238
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239 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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240
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102
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241 if (cmcf->variables.nelts <= index) {
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48
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242 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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243 "unknown variable index: %d", index);
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244 return NULL;
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245 }
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246
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50
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247 if (r->variables && r->variables[index]) {
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248 return r->variables[index];
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249 }
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48
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250
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50
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251 v = cmcf->variables.elts;
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48
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252
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50
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253 vv = v[index].handler(r, v[index].data);
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48
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254
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50
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255 if (r->variables == NULL) {
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256 r->variables = ngx_pcalloc(r->pool, cmcf->variables.nelts
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257 * sizeof(ngx_http_variable_value_t *));
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258 if (r->variables == NULL) {
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259 return NULL;
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48
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260 }
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261 }
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262
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58
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263 if (!(v[index].flags & NGX_HTTP_VAR_NOCACHABLE)) {
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264 r->variables[index] = vv;
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265 }
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50
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266
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267 return vv;
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48
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268 }
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269
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270
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271 ngx_http_variable_value_t *
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272 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name)
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273 {
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274 ngx_uint_t i, key;
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50
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275 ngx_http_variable_t *v;
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48
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276 ngx_http_core_main_conf_t *cmcf;
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277
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278 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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279
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58
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280 key = 0;
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281 for (i = 0; i < name->len; i++) {
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282 key += name->data[i];
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48
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283 }
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284
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58
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285 key %= cmcf->variables_hash.hash_size;
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286 v = (ngx_http_variable_t *) cmcf->variables_hash.buckets;
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48
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287
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58
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288 if (v[key].name.len == name->len
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289 && ngx_strncmp(v[key].name.data, name->data, name->len) == 0)
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290 {
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68
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291 if (v[key].flags & NGX_HTTP_VAR_INDEXED) {
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82
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292 return ngx_http_get_indexed_variable(r, v[key].index);
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68
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293
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294 } else {
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295 return v[key].handler(r, v[key].data);
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296 }
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48
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297 }
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298
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58
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299 if (ngx_strncmp(name->data, "http_", 5) == 0) {
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50
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300 return ngx_http_variable_unknown_header(r, (uintptr_t) name);
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48
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301 }
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302
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50
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303 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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304 "unknown \"%V\" variable", name);
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305
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58
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306 return NGX_HTTP_VAR_NOT_FOUND;
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307 }
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308
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309
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310 static ngx_http_variable_value_t *
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311 ngx_http_variable_request(ngx_http_request_t *r, uintptr_t data)
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312 {
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313 ngx_str_t *s;
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314 ngx_http_variable_value_t *vv;
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315
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316 s = (ngx_str_t *) ((char *) r + data);
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317
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318 if (s->data == NULL) {
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319 return NGX_HTTP_VAR_NOT_FOUND;
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320 }
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321
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322 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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323 if (vv == NULL) {
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324 return NULL;
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325 }
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326
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327 vv->value = 0;
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328 vv->text = *s;
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329
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330 return vv;
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48
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331 }
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332
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333
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334 static ngx_http_variable_value_t *
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335 ngx_http_variable_header(ngx_http_request_t *r, uintptr_t data)
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336 {
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337 ngx_table_elt_t *h;
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50
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338 ngx_http_variable_value_t *vv;
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48
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339
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58
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340 h = *(ngx_table_elt_t **) ((char *) r + data);
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48
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341
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342 if (h == NULL) {
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58
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343 return NGX_HTTP_VAR_NOT_FOUND;
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48
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344 }
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345
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50
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346 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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347 if (vv == NULL) {
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48
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348 return NULL;
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349 }
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350
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50
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351 vv->value = 0;
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352 vv->text = h->value;
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48
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353
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50
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354 return vv;
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48
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355 }
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356
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357
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358 static ngx_http_variable_value_t *
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64
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359 ngx_http_variable_headers(ngx_http_request_t *r, uintptr_t data)
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360 {
|
|
|
361 u_char *p;
|
|
|
362 ngx_uint_t i;
|
|
|
363 ngx_array_t *a;
|
|
|
364 ngx_table_elt_t **h;
|
|
|
365 ngx_http_variable_value_t *vv;
|
|
|
366
|
|
|
367 a = (ngx_array_t *) ((char *) r + data);
|
|
|
368
|
|
|
369 if (a->nelts == 0) {
|
|
|
370 return NGX_HTTP_VAR_NOT_FOUND;
|
|
|
371 }
|
|
|
372
|
|
|
373 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
374 if (vv == NULL) {
|
|
|
375 return NULL;
|
|
|
376 }
|
|
|
377
|
|
|
378 vv->value = 0;
|
|
|
379
|
|
|
380 h = a->elts;
|
|
|
381
|
|
|
382 if (a->nelts == 1) {
|
|
|
383 vv->text = (*h)->value;
|
|
|
384 return vv;
|
|
|
385 }
|
|
|
386
|
|
|
387 vv->text.len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
|
388
|
|
|
389 for (i = 0; i < a->nelts; i++) {
|
|
|
390 vv->text.len += h[i]->value.len + sizeof("; ") - 1;
|
|
|
391 }
|
|
|
392
|
|
|
393 vv->text.data = ngx_palloc(r->pool, vv->text.len);
|
|
|
394 if (vv->text.data == NULL) {
|
|
|
395 return NULL;
|
|
|
396 }
|
|
|
397
|
|
|
398 p = vv->text.data;
|
|
|
399
|
|
|
400 for (i = 0; /* void */ ; i++) {
|
|
|
401 p = ngx_cpymem(p, h[i]->value.data, h[i]->value.len);
|
|
|
402
|
|
|
403 if (i == a->nelts - 1) {
|
|
|
404 break;
|
|
|
405 }
|
|
|
406
|
|
|
407 *p++ = ';'; *p++ = ' ';
|
|
|
408 }
|
|
|
409
|
|
|
410 return vv;
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static ngx_http_variable_value_t *
|
|
50
|
415 ngx_http_variable_unknown_header(ngx_http_request_t *r, uintptr_t data)
|
|
48
|
416 {
|
|
50
|
417 ngx_str_t *var = (ngx_str_t *) data;
|
|
|
418
|
|
48
|
419 u_char ch;
|
|
|
420 ngx_uint_t i, n;
|
|
|
421 ngx_list_part_t *part;
|
|
|
422 ngx_table_elt_t *header;
|
|
50
|
423 ngx_http_variable_value_t *vv;
|
|
48
|
424
|
|
|
425 part = &r->headers_in.headers.part;
|
|
|
426 header = part->elts;
|
|
|
427
|
|
|
428 for (i = 0; /* void */ ; i++) {
|
|
|
429
|
|
|
430 if (i >= part->nelts) {
|
|
|
431 if (part->next == NULL) {
|
|
|
432 break;
|
|
|
433 }
|
|
|
434
|
|
|
435 part = part->next;
|
|
|
436 header = part->elts;
|
|
|
437 i = 0;
|
|
|
438 }
|
|
|
439
|
|
58
|
440 for (n = 0; n + 5 < var->len && n < header[i].key.len; n++) {
|
|
48
|
441 ch = header[i].key.data[n];
|
|
|
442
|
|
58
|
443 if (ch >= 'A' && ch <= 'Z') {
|
|
|
444 ch |= 0x20;
|
|
48
|
445
|
|
|
446 } else if (ch == '-') {
|
|
|
447 ch = '_';
|
|
|
448 }
|
|
|
449
|
|
|
450 if (var->data[n + 5] != ch) {
|
|
|
451 break;
|
|
|
452 }
|
|
|
453 }
|
|
|
454
|
|
|
455 if (n + 5 == var->len) {
|
|
50
|
456 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
457 if (vv == NULL) {
|
|
48
|
458 return NULL;
|
|
|
459 }
|
|
|
460
|
|
50
|
461 vv->value = 0;
|
|
|
462 vv->text = header[i].value;
|
|
|
463 return vv;
|
|
48
|
464 }
|
|
|
465 }
|
|
|
466
|
|
58
|
467 return NGX_HTTP_VAR_NOT_FOUND;
|
|
|
468 }
|
|
|
469
|
|
|
470
|
|
|
471 static ngx_http_variable_value_t *
|
|
|
472 ngx_http_variable_host(ngx_http_request_t *r, uintptr_t data)
|
|
|
473 {
|
|
|
474 ngx_http_variable_value_t *vv;
|
|
|
475
|
|
|
476 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
477 if (vv == NULL) {
|
|
|
478 return NULL;
|
|
|
479 }
|
|
|
480
|
|
|
481 vv->value = 0;
|
|
|
482
|
|
|
483 if (r->headers_in.host) {
|
|
|
484 vv->text.len = r->headers_in.host_name_len;
|
|
|
485 vv->text.data = r->headers_in.host->value.data;
|
|
|
486
|
|
|
487 } else {
|
|
|
488 vv->text = r->server_name;
|
|
|
489 }
|
|
|
490
|
|
|
491 return vv;
|
|
48
|
492 }
|
|
|
493
|
|
|
494
|
|
|
495 static ngx_http_variable_value_t *
|
|
|
496 ngx_http_variable_remote_addr(ngx_http_request_t *r, uintptr_t data)
|
|
|
497 {
|
|
50
|
498 ngx_http_variable_value_t *vv;
|
|
48
|
499
|
|
50
|
500 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
501 if (vv == NULL) {
|
|
48
|
502 return NULL;
|
|
|
503 }
|
|
|
504
|
|
50
|
505 vv->value = 0;
|
|
|
506 vv->text = r->connection->addr_text;
|
|
48
|
507
|
|
50
|
508 return vv;
|
|
48
|
509 }
|
|
|
510
|
|
|
511
|
|
|
512 static ngx_http_variable_value_t *
|
|
58
|
513 ngx_http_variable_remote_port(ngx_http_request_t *r, uintptr_t data)
|
|
48
|
514 {
|
|
58
|
515 ngx_uint_t port;
|
|
|
516 struct sockaddr_in *sin;
|
|
|
517 ngx_http_variable_value_t *vv;
|
|
|
518
|
|
|
519 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
520 if (vv == NULL) {
|
|
|
521 return NULL;
|
|
|
522 }
|
|
|
523
|
|
|
524 vv->value = 0;
|
|
|
525 vv->text.len = 0;
|
|
|
526
|
|
|
527 vv->text.data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
|
528 if (vv->text.data == NULL) {
|
|
|
529 return NULL;
|
|
|
530 }
|
|
|
531
|
|
|
532 /* AF_INET only */
|
|
|
533
|
|
|
534 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
|
535 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
|
536
|
|
|
537 port = ntohs(sin->sin_port);
|
|
|
538
|
|
|
539 if (port > 0 && port < 65536) {
|
|
|
540 vv->value = port;
|
|
|
541 vv->text.len = ngx_sprintf(vv->text.data, "%ui", port)
|
|
|
542 - vv->text.data;
|
|
|
543 }
|
|
|
544 }
|
|
|
545
|
|
|
546 return vv;
|
|
|
547 }
|
|
|
548
|
|
|
549
|
|
|
550 static ngx_http_variable_value_t *
|
|
|
551 ngx_http_variable_server_addr(ngx_http_request_t *r, uintptr_t data)
|
|
|
552 {
|
|
|
553 socklen_t len;
|
|
|
554 ngx_connection_t *c;
|
|
|
555 struct sockaddr_in sin;
|
|
50
|
556 ngx_http_variable_value_t *vv;
|
|
48
|
557
|
|
50
|
558 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
559 if (vv == NULL) {
|
|
48
|
560 return NULL;
|
|
|
561 }
|
|
|
562
|
|
50
|
563 vv->value = 0;
|
|
58
|
564
|
|
|
565 vv->text.data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
|
566 if (vv->text.data == NULL) {
|
|
|
567 return NULL;
|
|
|
568 }
|
|
|
569
|
|
|
570 c = r->connection;
|
|
|
571
|
|
|
572 if (r->in_addr == 0) {
|
|
|
573 len = sizeof(struct sockaddr_in);
|
|
|
574 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
|
575 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
|
576 ngx_socket_errno, "getsockname() failed");
|
|
|
577 return NULL;
|
|
|
578 }
|
|
|
579
|
|
|
580 r->in_addr = sin.sin_addr.s_addr;
|
|
|
581 }
|
|
|
582
|
|
|
583 vv->text.len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
|
584 vv->text.data, INET_ADDRSTRLEN);
|
|
48
|
585
|
|
50
|
586 return vv;
|
|
48
|
587 }
|
|
|
588
|
|
|
589
|
|
|
590 static ngx_http_variable_value_t *
|
|
58
|
591 ngx_http_variable_server_port(ngx_http_request_t *r, uintptr_t data)
|
|
|
592 {
|
|
|
593 ngx_http_variable_value_t *vv;
|
|
|
594
|
|
|
595 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
596 if (vv == NULL) {
|
|
|
597 return NULL;
|
|
|
598 }
|
|
|
599
|
|
|
600 vv->value = r->port;
|
|
|
601 vv->text.len = r->port_text->len - 1;
|
|
|
602 vv->text.data = r->port_text->data + 1;
|
|
|
603
|
|
|
604 return vv;
|
|
|
605 }
|
|
|
606
|
|
|
607
|
|
|
608 static ngx_http_variable_value_t *
|
|
|
609 ngx_http_variable_document_root(ngx_http_request_t *r, uintptr_t data)
|
|
48
|
610 {
|
|
58
|
611 ngx_http_core_loc_conf_t *clcf;
|
|
|
612 ngx_http_variable_value_t *vv;
|
|
|
613
|
|
|
614 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
615 if (vv == NULL) {
|
|
|
616 return NULL;
|
|
|
617 }
|
|
|
618
|
|
|
619 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
620
|
|
|
621 vv->value = 0;
|
|
|
622 vv->text = clcf->root;
|
|
|
623
|
|
|
624 return vv;
|
|
|
625 }
|
|
|
626
|
|
|
627
|
|
|
628 static ngx_http_variable_value_t *
|
|
|
629 ngx_http_variable_request_filename(ngx_http_request_t *r, uintptr_t data)
|
|
|
630 {
|
|
50
|
631 ngx_http_variable_value_t *vv;
|
|
48
|
632
|
|
50
|
633 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
634 if (vv == NULL) {
|
|
48
|
635 return NULL;
|
|
|
636 }
|
|
|
637
|
|
50
|
638 vv->value = 0;
|
|
58
|
639
|
|
106
|
640 if (ngx_http_map_uri_to_path(r, &vv->text, 0) == NULL) {
|
|
|
641 return NULL;
|
|
|
642 }
|
|
58
|
643
|
|
106
|
644 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
|
58
|
645
|
|
106
|
646 vv->text.len--;
|
|
48
|
647
|
|
50
|
648 return vv;
|
|
48
|
649 }
|
|
|
650
|
|
|
651
|
|
88
|
652 static ngx_http_variable_value_t *
|
|
110
|
653 ngx_http_variable_request_method(ngx_http_request_t *r, uintptr_t data)
|
|
|
654 {
|
|
|
655 ngx_http_variable_value_t *vv;
|
|
|
656
|
|
|
657 if (r->method_name.data == NULL) {
|
|
|
658 return NGX_HTTP_VAR_NOT_FOUND;
|
|
|
659 }
|
|
|
660
|
|
|
661 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
662 if (vv == NULL) {
|
|
|
663 return NULL;
|
|
|
664 }
|
|
|
665
|
|
|
666 vv->value = 0;
|
|
|
667
|
|
|
668 if (r->upstream && r->upstream->method.len) {
|
|
|
669 vv->text = r->upstream->method;
|
|
|
670
|
|
|
671 } else {
|
|
|
672 vv->text = r->method_name;
|
|
|
673 }
|
|
|
674
|
|
|
675 return vv;
|
|
|
676 }
|
|
|
677
|
|
|
678
|
|
|
679 static ngx_http_variable_value_t *
|
|
88
|
680 ngx_http_variable_remote_user(ngx_http_request_t *r, uintptr_t data)
|
|
|
681 {
|
|
|
682 ngx_int_t rc;
|
|
|
683 ngx_http_variable_value_t *vv;
|
|
|
684
|
|
|
685 rc = ngx_http_auth_basic_user(r);
|
|
|
686
|
|
|
687 if (rc == NGX_DECLINED) {
|
|
|
688 return NGX_HTTP_VAR_NOT_FOUND;
|
|
|
689 }
|
|
|
690
|
|
|
691 if (rc == NGX_ERROR) {
|
|
|
692 return NULL;
|
|
|
693 }
|
|
|
694
|
|
|
695 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
696 if (vv == NULL) {
|
|
|
697 return NULL;
|
|
|
698 }
|
|
|
699
|
|
|
700 vv->value = 0;
|
|
|
701 vv->text = r->headers_in.user;
|
|
|
702
|
|
|
703 return vv;
|
|
|
704 }
|
|
|
705
|
|
|
706
|
|
120
|
707 static ngx_http_variable_value_t *
|
|
|
708 ngx_http_variable_sent(ngx_http_request_t *r, uintptr_t data)
|
|
|
709 {
|
|
|
710 off_t sent;
|
|
|
711 u_char *p;
|
|
|
712 ngx_http_variable_value_t *vv;
|
|
|
713
|
|
|
714 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
715 if (vv == NULL) {
|
|
|
716 return NULL;
|
|
|
717 }
|
|
|
718
|
|
|
719 sent = r->connection->sent;
|
|
|
720
|
|
|
721 if (data) {
|
|
|
722 sent -= r->header_size;
|
|
|
723
|
|
|
724 if (sent < 0) {
|
|
|
725 sent = 0;
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
|
729 p = ngx_palloc(r->pool, NGX_OFF_T_LEN);
|
|
|
730 if (p == NULL) {
|
|
|
731 return NULL;
|
|
|
732 }
|
|
|
733
|
|
|
734 vv->value = 0;
|
|
|
735 vv->text.len = ngx_sprintf(p, "%O", sent) - p;
|
|
|
736 vv->text.data = p;
|
|
|
737
|
|
|
738 return vv;
|
|
|
739 }
|
|
|
740
|
|
|
741
|
|
48
|
742 ngx_int_t
|
|
58
|
743 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
48
|
744 {
|
|
58
|
745 ngx_http_variable_t *v, *cv;
|
|
50
|
746 ngx_http_core_main_conf_t *cmcf;
|
|
48
|
747
|
|
58
|
748 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
749
|
|
|
750 if (ngx_array_init(&cmcf->all_variables, cf->pool, 32,
|
|
118
|
751 sizeof(ngx_http_variable_t))
|
|
|
752 == NGX_ERROR)
|
|
58
|
753 {
|
|
48
|
754 return NGX_ERROR;
|
|
|
755 }
|
|
|
756
|
|
50
|
757 for (cv = ngx_http_core_variables; cv->name.len; cv++) {
|
|
58
|
758 v = ngx_array_push(&cmcf->all_variables);
|
|
|
759 if (v == NULL) {
|
|
48
|
760 return NGX_ERROR;
|
|
|
761 }
|
|
|
762
|
|
58
|
763 *v = *cv;
|
|
48
|
764 }
|
|
|
765
|
|
|
766 return NGX_OK;
|
|
|
767 }
|
|
58
|
768
|
|
|
769
|
|
|
770 ngx_int_t
|
|
|
771 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
|
772 {
|
|
|
773 ngx_uint_t i, n;
|
|
|
774 ngx_http_variable_t *v, *av;
|
|
|
775 ngx_http_core_main_conf_t *cmcf;
|
|
|
776
|
|
|
777 /* set the handlers for the indexed http variables */
|
|
|
778
|
|
|
779 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
780
|
|
|
781 v = cmcf->variables.elts;
|
|
|
782 av = cmcf->all_variables.elts;
|
|
|
783
|
|
|
784 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
785
|
|
|
786 for (n = 0; n < cmcf->all_variables.nelts; n++) {
|
|
|
787
|
|
|
788 if (v[i].name.len == av[n].name.len
|
|
|
789 && ngx_strncmp(v[i].name.data, av[n].name.data, v[i].name.len)
|
|
|
790 == 0)
|
|
|
791 {
|
|
|
792 v[i].handler = av[n].handler;
|
|
|
793 v[i].data = av[n].data;
|
|
76
|
794
|
|
|
795 av[n].flags |= NGX_HTTP_VAR_INDEXED;
|
|
|
796 v[i].flags = av[n].flags;
|
|
58
|
797
|
|
82
|
798 av[n].index = i;
|
|
|
799
|
|
58
|
800 goto next;
|
|
|
801 }
|
|
|
802 }
|
|
|
803
|
|
|
804 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
|
805 v[i].handler = ngx_http_variable_unknown_header;
|
|
|
806 v[i].data = (uintptr_t) &v[i].name;
|
|
|
807
|
|
|
808 continue;
|
|
|
809 }
|
|
|
810
|
|
|
811 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
812 "unknown \"%V\" variable", &v[i].name);
|
|
|
813
|
|
|
814 return NGX_ERROR;
|
|
|
815
|
|
|
816 next:
|
|
|
817 continue;
|
|
|
818 }
|
|
|
819
|
|
|
820 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
821 "http variables: %ui", cmcf->variables.nelts);
|
|
|
822
|
|
|
823
|
|
|
824 /* init the all http variables hash */
|
|
|
825
|
|
|
826 cmcf->variables_hash.max_size = 500;
|
|
|
827 cmcf->variables_hash.bucket_limit = 1;
|
|
|
828 cmcf->variables_hash.bucket_size = sizeof(ngx_http_variable_t);
|
|
|
829 cmcf->variables_hash.name = "http variables";
|
|
|
830
|
|
|
831 if (ngx_hash_init(&cmcf->variables_hash, cf->pool,
|
|
|
832 cmcf->all_variables.elts, cmcf->all_variables.nelts) != NGX_OK)
|
|
|
833 {
|
|
|
834 return NGX_ERROR;
|
|
|
835 }
|
|
|
836
|
|
|
837 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
838 "http variables hash size: %ui for %ui values, "
|
|
|
839 "max buckets per entry: %ui",
|
|
|
840 cmcf->variables_hash.hash_size, cmcf->all_variables.nelts,
|
|
|
841 cmcf->variables_hash.min_buckets);
|
|
|
842
|
|
|
843 return NGX_OK;
|
|
|
844 }
|
