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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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13 typedef struct {
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14 ngx_http_upstream_conf_t upstream;
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15
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16 ngx_peers_t *peers;
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17
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18 ngx_array_t *headers_set_len;
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19 ngx_array_t *headers_set;
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20 ngx_hash_t *headers_set_hash;
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21
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22 ngx_flag_t preserve_host;
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23 ngx_flag_t set_x_url;
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24 ngx_flag_t set_x_real_ip;
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25 ngx_flag_t add_x_forwarded_for;
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26 ngx_flag_t pass_server;
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27 ngx_flag_t pass_x_accel_expires;
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28
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29 ngx_str_t *location0;
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30
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31 ngx_str_t host_header;
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32 ngx_str_t uri0;
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33
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34 ngx_array_t *headers_sources;
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35 ngx_array_t *headers_names;
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36 } ngx_http_proxy_loc_conf_t;
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37
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38
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39 typedef struct {
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40 ngx_list_t headers;
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41
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42 ngx_table_elt_t *date;
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43 ngx_table_elt_t *server;
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44
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45 ngx_table_elt_t *expires;
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46 ngx_table_elt_t *cache_control;
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47 ngx_table_elt_t *etag;
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48 ngx_table_elt_t *x_accel_expires;
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49
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50 ngx_table_elt_t *connection;
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51 ngx_table_elt_t *content_type;
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52 ngx_table_elt_t *content_length;
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53
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54 #if (NGX_HTTP_GZIP)
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55 ngx_table_elt_t *content_encoding;
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56 #endif
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57
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58 ngx_table_elt_t *last_modified;
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59 ngx_table_elt_t *location;
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60 ngx_table_elt_t *accept_ranges;
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61 ngx_table_elt_t *x_pad;
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62
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63 off_t content_length_n;
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64 } ngx_http_proxy_headers_in_t;
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65
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66
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67 static ngx_int_t ngx_http_proxy_create_request(ngx_http_request_t *r);
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68 static ngx_int_t ngx_http_proxy_reinit_request(ngx_http_request_t *r);
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69 static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r);
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70 static ngx_int_t ngx_http_proxy_send_header(ngx_http_request_t *r);
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71 static void ngx_http_proxy_abort_request(ngx_http_request_t *r);
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72 static void ngx_http_proxy_finalize_request(ngx_http_request_t *r,
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73 ngx_int_t rc);
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74
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75 static ngx_int_t ngx_http_proxy_compile_header_start(ngx_table_elt_t *h,
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76 ngx_array_t *lengths, ngx_array_t *values, ngx_uint_t value);
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77 static ngx_int_t ngx_http_proxy_compile_header_end(ngx_array_t *lengths,
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78 ngx_array_t *values);
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79
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80 static ngx_int_t ngx_http_proxy_init(ngx_cycle_t *cycle);
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81 static ngx_http_variable_value_t *ngx_http_proxy_host_variable
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82 (ngx_http_request_t *r, uintptr_t data);
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83 static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf);
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84 static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf,
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85 void *parent, void *child);
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86
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87 static char *ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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88 void *conf);
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89
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90 static char *ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd,
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91 void *conf);
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92 static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data);
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93
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94 static ngx_conf_post_t ngx_http_proxy_lowat_post =
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95 { ngx_http_proxy_lowat_check };
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96
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97 static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = {
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98 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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99 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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100 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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101 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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102 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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103 { ngx_null_string, 0 }
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104 };
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105
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106
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107 static ngx_command_t ngx_http_proxy_commands[] = {
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108
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109 { ngx_string("proxy_pass"),
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110 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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111 ngx_http_proxy_pass,
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112 NGX_HTTP_LOC_CONF_OFFSET,
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113 0,
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114 NULL },
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115
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116 { ngx_string("proxy_connect_timeout"),
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117 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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118 ngx_conf_set_msec_slot,
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119 NGX_HTTP_LOC_CONF_OFFSET,
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120 offsetof(ngx_http_proxy_loc_conf_t, upstream.connect_timeout),
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121 NULL },
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122
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123 { ngx_string("proxy_send_timeout"),
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124 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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125 ngx_conf_set_msec_slot,
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126 NGX_HTTP_LOC_CONF_OFFSET,
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127 offsetof(ngx_http_proxy_loc_conf_t, upstream.send_timeout),
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128 NULL },
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129
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130 { ngx_string("proxy_send_lowat"),
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131 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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132 ngx_conf_set_size_slot,
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133 NGX_HTTP_LOC_CONF_OFFSET,
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134 offsetof(ngx_http_proxy_loc_conf_t, upstream.send_lowat),
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135 &ngx_http_proxy_lowat_post },
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136
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137 { ngx_string("proxy_pass_unparsed_uri"),
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138 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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139 ngx_conf_set_flag_slot,
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140 NGX_HTTP_LOC_CONF_OFFSET,
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141 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_unparsed_uri),
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142 NULL },
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143
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144 { ngx_string("proxy_preserve_host"),
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145 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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146 ngx_conf_set_flag_slot,
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147 NGX_HTTP_LOC_CONF_OFFSET,
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148 offsetof(ngx_http_proxy_loc_conf_t, preserve_host),
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149 NULL },
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150
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151 { ngx_string("proxy_set_x_url"),
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152 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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153 ngx_conf_set_flag_slot,
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154 NGX_HTTP_LOC_CONF_OFFSET,
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155 offsetof(ngx_http_proxy_loc_conf_t, set_x_url),
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156 NULL },
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157
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158 { ngx_string("proxy_set_x_real_ip"),
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159 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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160 ngx_conf_set_flag_slot,
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161 NGX_HTTP_LOC_CONF_OFFSET,
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162 offsetof(ngx_http_proxy_loc_conf_t, set_x_real_ip),
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163 NULL },
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164
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165 { ngx_string("proxy_set_x_var"),
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166 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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167 ngx_http_proxy_set_x_var,
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168 NGX_HTTP_LOC_CONF_OFFSET,
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169 0,
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170 NULL },
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171
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172 { ngx_string("proxy_add_x_forwarded_for"),
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173 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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174 ngx_conf_set_flag_slot,
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175 NGX_HTTP_LOC_CONF_OFFSET,
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176 offsetof(ngx_http_proxy_loc_conf_t, add_x_forwarded_for),
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177 NULL },
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178
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179 { ngx_string("proxy_header_buffer_size"),
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180 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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181 ngx_conf_set_size_slot,
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182 NGX_HTTP_LOC_CONF_OFFSET,
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183 offsetof(ngx_http_proxy_loc_conf_t, upstream.header_buffer_size),
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184 NULL },
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185
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186 { ngx_string("proxy_read_timeout"),
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187 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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188 ngx_conf_set_msec_slot,
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189 NGX_HTTP_LOC_CONF_OFFSET,
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190 offsetof(ngx_http_proxy_loc_conf_t, upstream.read_timeout),
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191 NULL },
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192
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193 { ngx_string("proxy_buffers"),
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194 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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195 ngx_conf_set_bufs_slot,
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196 NGX_HTTP_LOC_CONF_OFFSET,
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197 offsetof(ngx_http_proxy_loc_conf_t, upstream.bufs),
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198 NULL },
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199
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200 { ngx_string("proxy_busy_buffers_size"),
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201 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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202 ngx_conf_set_size_slot,
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203 NGX_HTTP_LOC_CONF_OFFSET,
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204 offsetof(ngx_http_proxy_loc_conf_t, upstream.busy_buffers_size),
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205 NULL },
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206
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207 { ngx_string("proxy_temp_path"),
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208 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
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209 ngx_conf_set_path_slot,
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210 NGX_HTTP_LOC_CONF_OFFSET,
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211 offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_path),
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212 (void *) ngx_garbage_collector_temp_handler },
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213
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214 { ngx_string("proxy_max_temp_file_size"),
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215 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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216 ngx_conf_set_size_slot,
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217 NGX_HTTP_LOC_CONF_OFFSET,
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218 offsetof(ngx_http_proxy_loc_conf_t, upstream.max_temp_file_size),
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219 NULL },
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220
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221 { ngx_string("proxy_temp_file_write_size"),
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222 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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223 ngx_conf_set_size_slot,
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224 NGX_HTTP_LOC_CONF_OFFSET,
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225 offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_file_write_size),
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226 NULL },
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227
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228 { ngx_string("proxy_next_upstream"),
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229 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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230 ngx_conf_set_bitmask_slot,
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231 NGX_HTTP_LOC_CONF_OFFSET,
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232 offsetof(ngx_http_proxy_loc_conf_t, upstream.next_upstream),
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233 &ngx_http_proxy_next_upstream_masks },
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234
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235 { ngx_string("proxy_pass_server"),
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236 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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237 ngx_conf_set_flag_slot,
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238 NGX_HTTP_LOC_CONF_OFFSET,
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239 offsetof(ngx_http_proxy_loc_conf_t, pass_server),
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240 NULL },
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241
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242 { ngx_string("proxy_pass_x_accel_expires"),
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243 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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244 ngx_conf_set_flag_slot,
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245 NGX_HTTP_LOC_CONF_OFFSET,
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246 offsetof(ngx_http_proxy_loc_conf_t, pass_x_accel_expires),
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247 NULL },
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248
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249 ngx_null_command
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250 };
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251
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252
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253 ngx_http_module_t ngx_http_proxy_module_ctx = {
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254 NULL, /* pre conf */
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255
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256 NULL, /* create main configuration */
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257 NULL, /* init main configuration */
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258
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259 NULL, /* create server configuration */
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260 NULL, /* merge server configuration */
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261
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262 ngx_http_proxy_create_loc_conf, /* create location configration */
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263 ngx_http_proxy_merge_loc_conf /* merge location configration */
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264 };
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265
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266
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267 ngx_module_t ngx_http_proxy_module = {
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268 NGX_MODULE,
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269 &ngx_http_proxy_module_ctx, /* module context */
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270 ngx_http_proxy_commands, /* module directives */
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271 NGX_HTTP_MODULE, /* module type */
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272 ngx_http_proxy_init, /* init module */
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273 NULL /* init process */
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274 };
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275
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276
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277 static ngx_str_t ngx_http_proxy_methods[] = {
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278 ngx_string("GET"),
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279 ngx_string("HEAD"),
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280 ngx_string("POST")
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281 };
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282
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283
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284 static char ngx_http_proxy_version[] = " HTTP/1.0" CRLF;
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285
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286 static ngx_str_t ngx_http_proxy_host = ngx_string("PROXY_HOST");
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287
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288
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289 #if (NGX_PCRE)
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290 static ngx_str_t ngx_http_proxy_uri = ngx_string("/");
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291 #endif
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292
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293
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294 #if 0
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295
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296 ngx_http_header_t ngx_http_proxy_headers_in[] = {
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297 { ngx_string("Date"), offsetof(ngx_http_proxy_headers_in_t, date) },
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298 { ngx_string("Server"), offsetof(ngx_http_proxy_headers_in_t, server) },
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299
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300 { ngx_string("Expires"), offsetof(ngx_http_proxy_headers_in_t, expires) },
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301 { ngx_string("Cache-Control"),
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302 offsetof(ngx_http_proxy_headers_in_t, cache_control) },
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303 { ngx_string("ETag"), offsetof(ngx_http_proxy_headers_in_t, etag) },
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304 { ngx_string("X-Accel-Expires"),
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305 offsetof(ngx_http_proxy_headers_in_t, x_accel_expires) },
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306
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307 { ngx_string("Connection"),
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308 offsetof(ngx_http_proxy_headers_in_t, connection) },
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309 { ngx_string("Content-Type"),
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310 offsetof(ngx_http_proxy_headers_in_t, content_type) },
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311 { ngx_string("Content-Length"),
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312 offsetof(ngx_http_proxy_headers_in_t, content_length) },
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313
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314 #if (NGX_HTTP_GZIP)
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315 { ngx_string("Content-Encoding"),
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316 offsetof(ngx_http_proxy_headers_in_t, content_encoding) },
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317 #endif
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318
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319 { ngx_string("Last-Modified"),
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320 offsetof(ngx_http_proxy_headers_in_t, last_modified) },
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321 { ngx_string("Location"),
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322 offsetof(ngx_http_proxy_headers_in_t, location) },
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323 { ngx_string("Accept-Ranges"),
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324 offsetof(ngx_http_proxy_headers_in_t, accept_ranges) },
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325 { ngx_string("X-Pad"), offsetof(ngx_http_proxy_headers_in_t, x_pad) },
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326
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327 { ngx_null_string, 0 }
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328 };
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329
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330 #endif
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331
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332
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333 static ngx_int_t
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334 ngx_http_proxy_handler(ngx_http_request_t *r)
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335 {
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336 ngx_int_t rc;
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337 ngx_http_upstream_t *u;
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338 ngx_http_proxy_loc_conf_t *plcf;
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339
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340 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
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341
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342 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
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343 if (u == NULL) {
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344 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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345 }
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346
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347 u->peer.log = r->connection->log;
|
|
|
348 u->peer.log_error = NGX_ERROR_ERR;
|
|
|
349 u->peer.peers = plcf->peers;
|
|
|
350 u->peer.tries = plcf->peers->number;
|
|
|
351 #if (NGX_THREADS)
|
|
|
352 u->peer.lock = &r->connection->lock;
|
|
|
353 #endif
|
|
|
354
|
|
|
355 u->output.tag = (ngx_buf_tag_t) &ngx_http_proxy_module;
|
|
|
356
|
|
|
357 u->conf = &plcf->upstream;
|
|
|
358
|
|
|
359 u->create_request = ngx_http_proxy_create_request;
|
|
|
360 u->reinit_request = ngx_http_proxy_reinit_request;
|
|
|
361 u->process_header = ngx_http_proxy_process_header;
|
|
|
362 u->send_header = ngx_http_proxy_send_header;
|
|
|
363 u->abort_request = ngx_http_proxy_abort_request;
|
|
|
364 u->finalize_request = ngx_http_proxy_finalize_request;
|
|
|
365
|
|
|
366 u->pipe.input_filter = ngx_event_pipe_copy_input_filter;
|
|
|
367
|
|
|
368 u->log_ctx = r->connection->log->data;
|
|
|
369 u->log_handler = ngx_http_upstream_log_error;
|
|
|
370
|
|
|
371 u->schema0.len = sizeof("http://") - 1;
|
|
|
372 u->schema0.data = (u_char *) "http://";
|
|
|
373 u->uri0 = plcf->uri0;
|
|
|
374 u->location0 = plcf->location0;
|
|
|
375
|
|
|
376 r->upstream = u;
|
|
|
377
|
|
|
378 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
|
|
|
379
|
|
|
380 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
|
|
|
381 return rc;
|
|
|
382 }
|
|
|
383
|
|
|
384 return NGX_DONE;
|
|
|
385 }
|
|
|
386
|
|
|
387
|
|
|
388 static ngx_int_t
|
|
|
389 ngx_http_proxy_create_request(ngx_http_request_t *r)
|
|
|
390 {
|
|
|
391 size_t len;
|
|
|
392 ngx_uint_t i, key;
|
|
|
393 uintptr_t escape;
|
|
|
394 ngx_buf_t *b;
|
|
|
395 ngx_str_t *hh;
|
|
|
396 ngx_chain_t *cl;
|
|
|
397 ngx_list_part_t *part;
|
|
|
398 ngx_table_elt_t *header;
|
|
|
399 ngx_http_upstream_t *u;
|
|
|
400 ngx_http_proxy_loc_conf_t *plcf;
|
|
|
401 ngx_http_script_code_pt code;
|
|
|
402 ngx_http_script_len_code_pt lcode;
|
|
|
403 ngx_http_script_lite_engine_t e;
|
|
|
404
|
|
|
405 u = r->upstream;
|
|
|
406
|
|
|
407 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
|
408
|
|
|
409 len = sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1;
|
|
|
410
|
|
|
411 if (u->method) {
|
|
|
412 len += ngx_http_proxy_methods[u->method - 1].len + u->uri0.len;
|
|
|
413 } else {
|
|
|
414 len += r->method_name.len + u->uri0.len;
|
|
|
415 }
|
|
|
416
|
|
|
417 escape = 0;
|
|
|
418
|
|
|
419 if (plcf->upstream.pass_unparsed_uri && r->valid_unparsed_uri) {
|
|
|
420 len += r->unparsed_uri.len - 1;
|
|
|
421
|
|
|
422 } else {
|
|
|
423 if (r->quoted_uri) {
|
|
|
424 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->location0->len,
|
|
|
425 r->uri.len - u->location0->len,
|
|
|
426 NGX_ESCAPE_URI);
|
|
|
427 }
|
|
|
428
|
|
|
429 len += r->uri.len - u->location0->len + escape
|
|
|
430 + sizeof("?") - 1 + r->args.len;
|
|
|
431 }
|
|
|
432
|
|
|
433
|
|
|
434 e.ip = plcf->headers_set_len->elts;
|
|
|
435 e.request = r;
|
|
|
436
|
|
|
437 while (*(uintptr_t *) e.ip) {
|
|
|
438 lcode = *(ngx_http_script_len_code_pt *) e.ip;
|
|
|
439 len += lcode(&e);
|
|
|
440 }
|
|
|
441
|
|
|
442
|
|
|
443 part = &r->headers_in.headers.part;
|
|
|
444 header = part->elts;
|
|
|
445 hh = (ngx_str_t *) plcf->headers_set_hash->buckets;
|
|
|
446
|
|
|
447 for (i = 0; /* void */; i++) {
|
|
|
448
|
|
|
449 if (i >= part->nelts) {
|
|
|
450 if (part->next == NULL) {
|
|
|
451 break;
|
|
|
452 }
|
|
|
453
|
|
|
454 part = part->next;
|
|
|
455 header = part->elts;
|
|
|
456 i = 0;
|
|
|
457 }
|
|
|
458
|
|
|
459 key = header[i].hash % plcf->headers_set_hash->hash_size;
|
|
|
460
|
|
|
461 if (hh[key].len == header[i].key.len
|
|
|
462 && ngx_strcasecmp(hh[key].data, header[i].key.data) == 0)
|
|
|
463 {
|
|
|
464 continue;
|
|
|
465 }
|
|
|
466
|
|
|
467 len += header[i].key.len + sizeof(": ") - 1
|
|
|
468 + header[i].value.len + sizeof(CRLF) - 1;
|
|
|
469 }
|
|
|
470
|
|
|
471 b = ngx_create_temp_buf(r->pool, len);
|
|
|
472 if (b == NULL) {
|
|
|
473 return NGX_ERROR;
|
|
|
474 }
|
|
|
475
|
|
|
476 cl = ngx_alloc_chain_link(r->pool);
|
|
|
477 if (cl == NULL) {
|
|
|
478 return NGX_ERROR;
|
|
|
479 }
|
|
|
480
|
|
|
481 cl->buf = b;
|
|
|
482 cl->next = NULL;
|
|
|
483
|
|
|
484 r->request_body->bufs = cl;
|
|
|
485
|
|
|
486
|
|
|
487 /* the request line */
|
|
|
488
|
|
|
489 if (u->method) {
|
|
|
490 b->last = ngx_cpymem(b->last,
|
|
|
491 ngx_http_proxy_methods[u->method - 1].data,
|
|
|
492 ngx_http_proxy_methods[u->method - 1].len);
|
|
|
493 } else {
|
|
|
494 b->last = ngx_cpymem(b->last, r->method_name.data, r->method_name.len);
|
|
|
495 }
|
|
|
496
|
|
|
497 b->last = ngx_cpymem(b->last, u->uri0.data, u->uri0.len);
|
|
|
498
|
|
|
499 if (plcf->upstream.pass_unparsed_uri && r->valid_unparsed_uri) {
|
|
|
500 b->last = ngx_cpymem(b->last, r->unparsed_uri.data + 1,
|
|
|
501 r->unparsed_uri.len - 1);
|
|
|
502 } else {
|
|
|
503 if (escape) {
|
|
|
504 ngx_escape_uri(b->last, r->uri.data + u->location0->len,
|
|
|
505 r->uri.len - u->location0->len, NGX_ESCAPE_URI);
|
|
|
506 b->last += r->uri.len - u->location0->len + escape;
|
|
|
507
|
|
|
508 } else {
|
|
|
509 b->last = ngx_cpymem(b->last, r->uri.data + u->location0->len,
|
|
|
510 r->uri.len - u->location0->len);
|
|
|
511 }
|
|
|
512
|
|
|
513 if (r->args.len > 0) {
|
|
|
514 *b->last++ = '?';
|
|
|
515 b->last = ngx_cpymem(b->last, r->args.data, r->args.len);
|
|
|
516 }
|
|
|
517 }
|
|
|
518
|
|
|
519 b->last = ngx_cpymem(b->last, ngx_http_proxy_version,
|
|
|
520 sizeof(ngx_http_proxy_version) - 1);
|
|
|
521
|
|
|
522
|
|
|
523 e.ip = plcf->headers_set->elts;
|
|
|
524 e.pos = b->last;
|
|
|
525
|
|
|
526 while (*(uintptr_t *) e.ip) {
|
|
|
527 code = *(ngx_http_script_code_pt *) e.ip;
|
|
|
528 code((ngx_http_script_engine_t *) &e);
|
|
|
529 }
|
|
|
530
|
|
|
531 b->last = e.pos;
|
|
|
532
|
|
|
533
|
|
|
534 part = &r->headers_in.headers.part;
|
|
|
535 header = part->elts;
|
|
|
536
|
|
|
537 for (i = 0; /* void */; i++) {
|
|
|
538
|
|
|
539 if (i >= part->nelts) {
|
|
|
540 if (part->next == NULL) {
|
|
|
541 break;
|
|
|
542 }
|
|
|
543
|
|
|
544 part = part->next;
|
|
|
545 header = part->elts;
|
|
|
546 i = 0;
|
|
|
547 }
|
|
|
548
|
|
|
549 key = header[i].hash % plcf->headers_set_hash->hash_size;
|
|
|
550
|
|
|
551 if (hh[key].len == header[i].key.len
|
|
|
552 && ngx_strcasecmp(hh[key].data, header[i].key.data) == 0)
|
|
|
553 {
|
|
|
554 continue;
|
|
|
555 }
|
|
|
556
|
|
|
557 b->last = ngx_cpymem(b->last, header[i].key.data, header[i].key.len);
|
|
|
558
|
|
|
559 *b->last++ = ':'; *b->last++ = ' ';
|
|
|
560
|
|
|
561 b->last = ngx_cpymem(b->last, header[i].value.data,
|
|
|
562 header[i].value.len);
|
|
|
563
|
|
|
564 *b->last++ = CR; *b->last++ = LF;
|
|
|
565
|
|
|
566 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
567 "http proxy header: \"%V: %V\"",
|
|
|
568 &header[i].key, &header[i].value);
|
|
|
569 }
|
|
|
570
|
|
|
571 /* add "\r\n" at the header end */
|
|
|
572 *b->last++ = CR; *b->last++ = LF;
|
|
|
573
|
|
|
574 #if (NGX_DEBUG)
|
|
|
575 {
|
|
|
576 ngx_str_t s;
|
|
|
577
|
|
|
578 s.len = b->last - b->pos;
|
|
|
579 s.data = b->pos;
|
|
|
580 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
581 "http proxy header:\n\"%V\"", &s);
|
|
|
582 }
|
|
|
583 #endif
|
|
|
584
|
|
|
585 return NGX_OK;
|
|
|
586 }
|
|
|
587
|
|
|
588
|
|
|
589 static ngx_int_t
|
|
|
590 ngx_http_proxy_reinit_request(ngx_http_request_t *r)
|
|
|
591 {
|
|
|
592 return NGX_OK;
|
|
|
593 }
|
|
|
594
|
|
|
595
|
|
|
596 static ngx_int_t
|
|
|
597 ngx_http_proxy_process_header(ngx_http_request_t *r)
|
|
|
598 {
|
|
|
599 return NGX_OK;
|
|
|
600 }
|
|
|
601
|
|
|
602
|
|
|
603 static ngx_int_t
|
|
|
604 ngx_http_proxy_send_header(ngx_http_request_t *r)
|
|
|
605 {
|
|
|
606 return NGX_OK;
|
|
|
607 }
|
|
|
608
|
|
|
609
|
|
|
610 static void
|
|
|
611 ngx_http_proxy_abort_request(ngx_http_request_t *r)
|
|
|
612 {
|
|
|
613 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
614 "abort http proxy request");
|
|
|
615
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
|
619
|
|
|
620 static void
|
|
|
621 ngx_http_proxy_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
622 {
|
|
|
623 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
624 "finalize http proxy request");
|
|
|
625
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629
|
|
|
630 static ngx_int_t
|
|
|
631 ngx_http_proxy_init(ngx_cycle_t *cycle)
|
|
|
632 {
|
|
|
633 #if 0
|
|
|
634 ngx_http_variable_t *var;
|
|
|
635
|
|
|
636 var = ngx_http_add_variable(cf, &ngx_http_proxy_host, 1);
|
|
|
637 if (var == NULL) {
|
|
|
638 return NGX_ERROR;
|
|
|
639 }
|
|
|
640
|
|
|
641 var->handler = ngx_http_proxy_host_variable;
|
|
|
642 #endif
|
|
|
643
|
|
|
644 return NGX_OK;
|
|
|
645
|
|
|
646 #if 0
|
|
|
647 ngx_http_log_op_name_t *op;
|
|
|
648
|
|
|
649 for (op = ngx_http_proxy_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
650 op->run = NULL;
|
|
|
651
|
|
|
652 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
653 if (op->name.len == 0) {
|
|
|
654 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
655 }
|
|
|
656 }
|
|
|
657
|
|
|
658 op->run = (ngx_http_log_op_run_pt) ngx_http_proxy_log_fmt_ops;
|
|
|
659
|
|
|
660 #endif
|
|
|
661 }
|
|
|
662
|
|
|
663
|
|
|
664 static ngx_http_variable_value_t *
|
|
|
665 ngx_http_proxy_host_variable(ngx_http_request_t *r, uintptr_t data)
|
|
|
666 {
|
|
|
667 ngx_http_variable_value_t *var;
|
|
|
668 ngx_http_proxy_loc_conf_t *plcf;
|
|
|
669
|
|
|
670 var = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
671 if (var == NULL) {
|
|
|
672 return NULL;
|
|
|
673 }
|
|
|
674
|
|
|
675 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
|
676
|
|
|
677 var->value = 0;
|
|
|
678 var->text = plcf->host_header;
|
|
|
679
|
|
|
680 return var;
|
|
|
681 }
|
|
|
682
|
|
|
683
|
|
|
684 static void *
|
|
|
685 ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
|
|
|
686 {
|
|
|
687 ngx_http_proxy_loc_conf_t *conf;
|
|
|
688
|
|
|
689 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_loc_conf_t));
|
|
|
690 if (conf == NULL) {
|
|
|
691 return NGX_CONF_ERROR;
|
|
|
692 }
|
|
|
693
|
|
|
694 /*
|
|
|
695 * set by ngx_pcalloc():
|
|
|
696 *
|
|
|
697 * conf->upstream.bufs.num = 0;
|
|
|
698 * conf->upstream.path = NULL;
|
|
|
699 * conf->upstream.next_upstream = 0;
|
|
|
700 * conf->upstream.temp_path = NULL;
|
|
|
701 */
|
|
|
702
|
|
|
703 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
704 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
705 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
706
|
|
|
707 conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE;
|
|
|
708 conf->upstream.header_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
709 conf->upstream.busy_buffers_size = NGX_CONF_UNSET_SIZE;
|
|
|
710 conf->upstream.max_temp_file_size = NGX_CONF_UNSET_SIZE;
|
|
|
711 conf->upstream.temp_file_write_size = NGX_CONF_UNSET_SIZE;
|
|
|
712
|
|
|
713 conf->upstream.redirect_errors = NGX_CONF_UNSET;
|
|
|
714 conf->upstream.pass_unparsed_uri = NGX_CONF_UNSET;
|
|
|
715 conf->upstream.x_powered_by = NGX_CONF_UNSET;
|
|
|
716
|
|
|
717 /* "proxy_cyclic_temp_file" is disabled */
|
|
|
718 conf->upstream.cyclic_temp_file = 0;
|
|
|
719
|
|
|
720 conf->preserve_host = NGX_CONF_UNSET;
|
|
|
721 conf->set_x_url = NGX_CONF_UNSET;
|
|
|
722 conf->set_x_real_ip = NGX_CONF_UNSET;
|
|
|
723 conf->add_x_forwarded_for = NGX_CONF_UNSET;
|
|
|
724
|
|
|
725 conf->pass_server = NGX_CONF_UNSET;
|
|
|
726 conf->pass_x_accel_expires = NGX_CONF_UNSET;
|
|
|
727
|
|
|
728 return conf;
|
|
|
729 }
|
|
|
730
|
|
|
731
|
|
|
732 static char *
|
|
|
733 ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
734 {
|
|
|
735 ngx_http_proxy_loc_conf_t *prev = parent;
|
|
|
736 ngx_http_proxy_loc_conf_t *conf = child;
|
|
|
737
|
|
|
738 size_t size;
|
|
|
739 ngx_str_t *name;
|
|
|
740 ngx_table_elt_t *src;
|
|
|
741 ngx_http_variable_t *var;
|
|
|
742
|
|
|
743 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
744 prev->upstream.connect_timeout, 60000);
|
|
|
745
|
|
|
746 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
747 prev->upstream.send_timeout, 60000);
|
|
|
748
|
|
|
749 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
750 prev->upstream.read_timeout, 60000);
|
|
|
751
|
|
|
752 ngx_conf_merge_size_value(conf->upstream.send_lowat,
|
|
|
753 prev->upstream.send_lowat, 0);
|
|
|
754
|
|
|
755 ngx_conf_merge_size_value(conf->upstream.header_buffer_size,
|
|
|
756 prev->upstream.header_buffer_size,
|
|
|
757 (size_t) ngx_pagesize);
|
|
|
758
|
|
|
759 ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs,
|
|
|
760 8, ngx_pagesize);
|
|
|
761
|
|
|
762 if (conf->upstream.bufs.num < 2) {
|
|
|
763 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
764 "there must be at least 2 \"proxy_buffers\"");
|
|
|
765 return NGX_CONF_ERROR;
|
|
|
766 }
|
|
|
767
|
|
|
768
|
|
|
769 size = conf->upstream.header_buffer_size;
|
|
|
770 if (size < conf->upstream.bufs.size) {
|
|
|
771 size = conf->upstream.bufs.size;
|
|
|
772 }
|
|
|
773
|
|
|
774
|
|
|
775 ngx_conf_merge_size_value(conf->upstream.busy_buffers_size,
|
|
|
776 prev->upstream.busy_buffers_size,
|
|
|
777 NGX_CONF_UNSET_SIZE);
|
|
|
778
|
|
|
779 if (conf->upstream.busy_buffers_size == NGX_CONF_UNSET_SIZE) {
|
|
|
780 conf->upstream.busy_buffers_size = 2 * size;
|
|
|
781
|
|
|
782 } else if (conf->upstream.busy_buffers_size < size) {
|
|
|
783 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
784 "\"proxy_busy_buffers_size\" must be equal or bigger than "
|
|
|
785 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
|
786 "one of the \"proxy_buffers\"");
|
|
|
787
|
|
|
788 return NGX_CONF_ERROR;
|
|
|
789
|
|
|
790 } else if (conf->upstream.busy_buffers_size
|
|
|
791 > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size)
|
|
|
792 {
|
|
|
793 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
794 "\"proxy_busy_buffers_size\" must be less than "
|
|
|
795 "the size of all \"proxy_buffers\" minus one buffer");
|
|
|
796
|
|
|
797 return NGX_CONF_ERROR;
|
|
|
798 }
|
|
|
799
|
|
|
800
|
|
|
801 ngx_conf_merge_size_value(conf->upstream.temp_file_write_size,
|
|
|
802 prev->upstream.temp_file_write_size,
|
|
|
803 NGX_CONF_UNSET_SIZE);
|
|
|
804
|
|
|
805 if (conf->upstream.temp_file_write_size == NGX_CONF_UNSET_SIZE) {
|
|
|
806 conf->upstream.temp_file_write_size = 2 * size;
|
|
|
807
|
|
|
808 } else if (conf->upstream.temp_file_write_size < size) {
|
|
|
809 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
810 "\"proxy_temp_file_write_size\" must be equal or bigger than "
|
|
|
811 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
|
812 "one of the \"proxy_buffers\"");
|
|
|
813
|
|
|
814 return NGX_CONF_ERROR;
|
|
|
815 }
|
|
|
816
|
|
|
817
|
|
|
818 ngx_conf_merge_size_value(conf->upstream.max_temp_file_size,
|
|
|
819 prev->upstream.max_temp_file_size,
|
|
|
820 NGX_CONF_UNSET_SIZE);
|
|
|
821
|
|
|
822 if (conf->upstream.max_temp_file_size == NGX_CONF_UNSET_SIZE) {
|
|
|
823
|
|
|
824 conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
|
|
|
825
|
|
|
826 } else if (conf->upstream.max_temp_file_size != 0
|
|
|
827 && conf->upstream.max_temp_file_size < size)
|
|
|
828 {
|
|
|
829 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
830 "\"fastcgi_max_temp_file_size\" must be equal to zero to disable "
|
|
|
831 "the temporary files usage or must be equal or bigger than "
|
|
|
832 "maximum of the value of \"fastcgi_header_buffer_size\" and "
|
|
|
833 "one of the \"fastcgi_buffers\"");
|
|
|
834
|
|
|
835 return NGX_CONF_ERROR;
|
|
|
836 }
|
|
|
837
|
|
|
838 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
839 prev->upstream.next_upstream,
|
|
|
840 (NGX_CONF_BITMASK_SET
|
|
|
841 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
842 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
843
|
|
|
844 ngx_conf_merge_msec_value(conf->upstream.redirect_errors,
|
|
|
845 prev->upstream.redirect_errors, 0);
|
|
|
846
|
|
|
847 ngx_conf_merge_msec_value(conf->upstream.pass_unparsed_uri,
|
|
|
848 prev->upstream.pass_unparsed_uri, 0);
|
|
|
849
|
|
|
850 if (conf->upstream.pass_unparsed_uri && conf->location0->len > 1) {
|
|
|
851 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
852 "\"proxy_pass_unparsed_uri\" can be set for "
|
|
|
853 "location \"/\" or given by regular expression.");
|
|
|
854 return NGX_CONF_ERROR;
|
|
|
855 }
|
|
|
856
|
|
|
857 ngx_conf_merge_msec_value(conf->upstream.x_powered_by,
|
|
|
858 prev->upstream.x_powered_by, 1);
|
|
|
859
|
|
|
860 ngx_conf_merge_value(conf->preserve_host, prev->preserve_host, 0);
|
|
|
861 ngx_conf_merge_value(conf->set_x_url, prev->set_x_url, 0);
|
|
|
862 ngx_conf_merge_value(conf->set_x_real_ip, prev->set_x_real_ip, 0);
|
|
|
863 ngx_conf_merge_value(conf->add_x_forwarded_for,
|
|
|
864 prev->add_x_forwarded_for, 0);
|
|
|
865
|
|
|
866 if (conf->peers == NULL) {
|
|
|
867 conf->peers = prev->peers;
|
|
|
868 conf->upstream = prev->upstream;
|
|
|
869 }
|
|
|
870
|
|
|
871 if (conf->headers_set_hash == NULL) {
|
|
|
872 conf->headers_set_len = prev->headers_set_len;
|
|
|
873 conf->headers_set = prev->headers_set;
|
|
|
874 conf->headers_set_hash = prev->headers_set_hash;
|
|
|
875 }
|
|
|
876
|
|
|
877 if (conf->headers_set_hash == NULL) {
|
|
|
878
|
|
|
879 if (conf->headers_names == NULL) {
|
|
|
880 conf->headers_names = ngx_array_create(cf->pool, 4,
|
|
|
881 sizeof(ngx_str_t));
|
|
|
882 if (conf->headers_names == NULL) {
|
|
|
883 return NGX_CONF_ERROR;
|
|
|
884 }
|
|
|
885 }
|
|
|
886
|
|
|
887 if (conf->headers_sources == NULL) {
|
|
|
888 conf->headers_sources = ngx_array_create(cf->pool, 4,
|
|
|
889 sizeof(ngx_table_elt_t));
|
|
|
890 if (conf->headers_sources == NULL) {
|
|
|
891 return NGX_CONF_ERROR;
|
|
|
892 }
|
|
|
893 }
|
|
|
894
|
|
|
895 /* STUB */
|
|
|
896 var = ngx_http_add_variable(cf, &ngx_http_proxy_host, 0);
|
|
|
897 if (var == NULL) {
|
|
|
898 return NGX_CONF_ERROR;
|
|
|
899 }
|
|
|
900
|
|
|
901 var->handler = ngx_http_proxy_host_variable;
|
|
|
902 /**/
|
|
|
903
|
|
|
904
|
|
|
905 name = ngx_array_push(conf->headers_names);
|
|
|
906 if (name == NULL) {
|
|
|
907 return NGX_CONF_ERROR;
|
|
|
908 }
|
|
|
909
|
|
|
910 name->len = sizeof("Host") - 1;
|
|
|
911 name->data = (u_char *) "Host";
|
|
|
912
|
|
|
913 src = ngx_array_push(conf->headers_sources);
|
|
|
914 if (src == NULL) {
|
|
|
915 return NGX_CONF_ERROR;
|
|
|
916 }
|
|
|
917
|
|
|
918 src->hash = 0;
|
|
|
919 src->key.len = sizeof("Host") - 1;
|
|
|
920 src->key.data = (u_char *) "Host";
|
|
|
921 src->value.len = sizeof("$PROXY_HOST") - 1;
|
|
|
922 src->value.data = (u_char *) "$PROXY_HOST";
|
|
|
923
|
|
|
924
|
|
|
925 name = ngx_array_push(conf->headers_names);
|
|
|
926 if (name == NULL) {
|
|
|
927 return NGX_CONF_ERROR;
|
|
|
928 }
|
|
|
929
|
|
|
930 name->len = sizeof("Connection") - 1;
|
|
|
931 name->data = (u_char *) "Connection";
|
|
|
932
|
|
|
933 src = ngx_array_push(conf->headers_sources);
|
|
|
934 if (src == NULL) {
|
|
|
935 return NGX_CONF_ERROR;
|
|
|
936 }
|
|
|
937
|
|
|
938 src->hash = 0;
|
|
|
939 src->key.len = sizeof("Connection") - 1;
|
|
|
940 src->key.data = (u_char *) "Connection";
|
|
|
941 src->value.len = sizeof("close") - 1;
|
|
|
942 src->value.data = (u_char *) "close";
|
|
|
943
|
|
|
944
|
|
|
945 name = ngx_array_push(conf->headers_names);
|
|
|
946 if (name == NULL) {
|
|
|
947 return NGX_CONF_ERROR;
|
|
|
948 }
|
|
|
949
|
|
|
950 name->len = 0;
|
|
|
951 name->data = NULL;
|
|
|
952
|
|
|
953
|
|
|
954 if (ngx_http_script_compile_lite(cf, conf->headers_sources,
|
|
|
955 &conf->headers_set_len, &conf->headers_set,
|
|
|
956 ngx_http_proxy_compile_header_start,
|
|
|
957 ngx_http_proxy_compile_header_end) != NGX_OK)
|
|
|
958 {
|
|
|
959 return NGX_CONF_ERROR;
|
|
|
960 }
|
|
|
961
|
|
|
962
|
|
|
963 conf->headers_set_hash = ngx_pcalloc(cf->pool, sizeof(ngx_hash_t));
|
|
|
964 if (conf->headers_set_hash == NULL) {
|
|
|
965 return NGX_CONF_ERROR;
|
|
|
966 }
|
|
|
967
|
|
|
968 conf->headers_set_hash->max_size = 100;
|
|
|
969 conf->headers_set_hash->bucket_limit = 1;
|
|
|
970 conf->headers_set_hash->bucket_size = sizeof(ngx_str_t);
|
|
|
971 conf->headers_set_hash->name = "proxy_headers";
|
|
|
972
|
|
|
973 if (ngx_hash_init(conf->headers_set_hash, cf->pool,
|
|
|
974 conf->headers_names->elts) != NGX_OK)
|
|
|
975 {
|
|
|
976 return NGX_CONF_ERROR;
|
|
|
977 }
|
|
|
978
|
|
|
979 #if 0
|
|
|
980 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
981 #endif
|
|
|
982 ngx_log_error(NGX_LOG_NOTICE, cf->log, 0,
|
|
|
983 "proxy_headers hash size: %ui, "
|
|
|
984 "max buckets per entry: %ui",
|
|
|
985 conf->headers_set_hash->hash_size,
|
|
|
986 conf->headers_set_hash->min_buckets);
|
|
|
987 }
|
|
|
988
|
|
|
989 return NGX_CONF_OK;
|
|
|
990 }
|
|
|
991
|
|
|
992
|
|
|
993 static ngx_int_t
|
|
|
994 ngx_http_proxy_compile_header_start(ngx_table_elt_t *h,
|
|
|
995 ngx_array_t *lengths, ngx_array_t *values, ngx_uint_t value)
|
|
|
996 {
|
|
|
997 u_char *p;
|
|
|
998 size_t size;
|
|
|
999 ngx_http_script_copy_code_t *copy;
|
|
|
1000
|
|
|
1001 copy = ngx_array_push_n(lengths, sizeof(ngx_http_script_copy_code_t));
|
|
|
1002 if (copy == NULL) {
|
|
|
1003 return NGX_ERROR;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len;
|
|
|
1007 copy->len = h->key.len + sizeof(": ") - 1;
|
|
|
1008
|
|
|
1009 if (value) {
|
|
|
1010 copy->len += h->value.len + sizeof(CRLF) - 1;
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 size = (copy->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1);
|
|
|
1014
|
|
|
1015 copy = ngx_array_push_n(values,
|
|
|
1016 sizeof(ngx_http_script_copy_code_t) + size);
|
|
|
1017 if (copy == NULL) {
|
|
|
1018 return NGX_ERROR;
|
|
|
1019 }
|
|
|
1020
|
|
|
1021 copy->code = ngx_http_script_copy;
|
|
|
1022 copy->len = h->key.len + sizeof(": ") - 1;
|
|
|
1023
|
|
|
1024 if (value) {
|
|
|
1025 copy->len += h->value.len + sizeof(CRLF) - 1;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
|
|
|
1029
|
|
|
1030 p = ngx_cpymem(p, h->key.data, h->key.len);
|
|
|
1031 p = ngx_cpymem(p, ": ", sizeof(": ") - 1);
|
|
|
1032
|
|
|
1033 if (value) {
|
|
|
1034 p = ngx_cpymem(p, h->value.data, h->value.len);
|
|
|
1035 ngx_memcpy(p, CRLF, sizeof(CRLF) - 1);
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 return NGX_OK;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041
|
|
|
1042 static ngx_int_t
|
|
|
1043 ngx_http_proxy_compile_header_end(ngx_array_t *lengths, ngx_array_t *values)
|
|
|
1044 {
|
|
|
1045 size_t size;
|
|
|
1046 ngx_http_script_copy_code_t *copy;
|
|
|
1047
|
|
|
1048 copy = ngx_array_push_n(lengths, sizeof(ngx_http_script_copy_code_t));
|
|
|
1049 if (copy == NULL) {
|
|
|
1050 return NGX_ERROR;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len;
|
|
|
1054 copy->len = sizeof(CRLF) - 1;
|
|
|
1055
|
|
|
1056 size = (sizeof(CRLF) - 1 + sizeof(uintptr_t) - 1)
|
|
|
1057 & ~(sizeof(uintptr_t) - 1);
|
|
|
1058
|
|
|
1059 copy = ngx_array_push_n(values,
|
|
|
1060 sizeof(ngx_http_script_copy_code_t) + size);
|
|
|
1061 if (copy == NULL) {
|
|
|
1062 return NGX_ERROR;
|
|
|
1063 }
|
|
|
1064
|
|
|
1065 copy->code = ngx_http_script_copy;
|
|
|
1066 copy->len = sizeof(CRLF) - 1;
|
|
|
1067
|
|
|
1068 ngx_memcpy((u_char *) copy + sizeof(ngx_http_script_copy_code_t),
|
|
|
1069 CRLF, sizeof(CRLF) - 1);
|
|
|
1070
|
|
|
1071 return NGX_OK;
|
|
|
1072 }
|
|
|
1073
|
|
|
1074
|
|
|
1075 static char *
|
|
|
1076 ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1077 {
|
|
|
1078 ngx_http_proxy_loc_conf_t *lcf = conf;
|
|
|
1079
|
|
|
1080 ngx_uint_t i;
|
|
|
1081 ngx_str_t *value, *url;
|
|
|
1082 ngx_inet_upstream_t inet_upstream;
|
|
|
1083 ngx_http_core_loc_conf_t *clcf;
|
|
|
1084 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
1085 ngx_unix_domain_upstream_t unix_upstream;
|
|
|
1086 #endif
|
|
|
1087
|
|
|
1088 value = cf->args->elts;
|
|
|
1089
|
|
|
1090 url = &value[1];
|
|
|
1091
|
|
|
1092 if (ngx_strncasecmp(url->data, "http://", 7) != 0) {
|
|
|
1093 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix");
|
|
|
1094 return NGX_CONF_ERROR;
|
|
|
1095 }
|
|
|
1096
|
|
|
1097 if (ngx_strncasecmp(url->data + 7, "unix:", 5) == 0) {
|
|
|
1098
|
|
|
1099 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
1100
|
|
|
1101 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
|
1102
|
|
|
1103 unix_upstream.name = *url;
|
|
|
1104 unix_upstream.url.len = url->len - 7;
|
|
|
1105 unix_upstream.url.data = url->data + 7;
|
|
|
1106 unix_upstream.uri_part = 1;
|
|
|
1107
|
|
|
1108 lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
|
|
|
1109 if (lcf->peers == NULL) {
|
|
|
1110 return NGX_CONF_ERROR;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 lcf->peers->peer[0].uri_separator = ":";
|
|
|
1114
|
|
|
1115 lcf->host_header.len = sizeof("localhost") - 1;
|
|
|
1116 lcf->host_header.data = (u_char *) "localhost";
|
|
|
1117 lcf->uri0 = unix_upstream.uri;
|
|
|
1118 #if 0
|
|
|
1119 STUB
|
|
|
1120 lcf->upstream->default_port = 1;
|
|
|
1121 #endif
|
|
|
1122
|
|
|
1123 #else
|
|
|
1124 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1125 "the unix domain sockets are not supported "
|
|
|
1126 "on this platform");
|
|
|
1127 return NGX_CONF_ERROR;
|
|
|
1128
|
|
|
1129 #endif
|
|
|
1130
|
|
|
1131 } else {
|
|
|
1132 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
|
1133
|
|
|
1134 inet_upstream.name = *url;
|
|
|
1135 inet_upstream.url.len = url->len - 7;
|
|
|
1136 inet_upstream.url.data = url->data + 7;
|
|
|
1137 inet_upstream.default_port_value = 80;
|
|
|
1138 inet_upstream.uri_part = 1;
|
|
|
1139
|
|
|
1140 lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
|
|
|
1141 if (lcf->peers == NULL) {
|
|
|
1142 return NGX_CONF_ERROR;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 for (i = 0; i < lcf->peers->number; i++) {
|
|
|
1146 lcf->peers->peer[i].uri_separator = ":";
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 lcf->host_header = inet_upstream.host_header;
|
|
|
1150 lcf->uri0 = inet_upstream.uri;
|
|
|
1151 #if 0
|
|
|
1152 STUB
|
|
|
1153 lcf->port_text = inet_upstream.port_text;
|
|
|
1154 lcf->upstream->default_port = inet_upstream.default_port;
|
|
|
1155 #endif
|
|
|
1156 }
|
|
|
1157
|
|
|
1158 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
1159
|
|
|
1160 clcf->handler = ngx_http_proxy_handler;
|
|
|
1161
|
|
|
1162 #if (NGX_PCRE)
|
|
|
1163 lcf->location0 = clcf->regex ? &ngx_http_proxy_uri : &clcf->name;
|
|
|
1164 #else
|
|
|
1165 lcf->location0 = &clcf->name;
|
|
|
1166 #endif
|
|
|
1167
|
|
|
1168 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
1169 clcf->auto_redirect = 1;
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 return NGX_CONF_OK;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175
|
|
|
1176 static char *
|
|
|
1177 ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1178 {
|
|
|
1179 return NGX_CONF_OK;
|
|
|
1180 }
|
|
|
1181
|
|
|
1182
|
|
|
1183 static char *
|
|
|
1184 ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data)
|
|
|
1185 {
|
|
|
1186 #if (NGX_FREEBSD)
|
|
|
1187 ssize_t *np = data;
|
|
|
1188
|
|
|
1189 if (*np >= ngx_freebsd_net_inet_tcp_sendspace) {
|
|
|
1190 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1191 "\"proxy_send_lowat\" must be less than %d "
|
|
|
1192 "(sysctl net.inet.tcp.sendspace)",
|
|
|
1193 ngx_freebsd_net_inet_tcp_sendspace);
|
|
|
1194
|
|
|
1195 return NGX_CONF_ERROR;
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 #elif !(NGX_HAVE_SO_SNDLOWAT)
|
|
|
1199 ssize_t *np = data;
|
|
|
1200
|
|
|
1201 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1202 "\"proxy_send_lowat\" is not supported, ignored");
|
|
|
1203
|
|
|
1204 *np = 0;
|
|
|
1205
|
|
|
1206 #endif
|
|
|
1207
|
|
|
1208 return NGX_CONF_OK;
|
|
|
1209 }
|
