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0
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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_http.h>
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10 #include <ngx_http_proxy_handler.h>
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11
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12
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13 static ngx_int_t ngx_http_proxy_handler(ngx_http_request_t *r);
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26
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14 static ngx_int_t ngx_http_proxy_cache_get(ngx_http_proxy_ctx_t *p);
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0
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15
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28
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16 static size_t ngx_http_proxy_log_proxy_state_getlen(ngx_http_request_t *r,
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17 uintptr_t data);
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0
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18 static u_char *ngx_http_proxy_log_proxy_state(ngx_http_request_t *r,
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28
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19 u_char *buf,
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20 ngx_http_log_op_t *op);
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21
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22 #if 0
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0
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23 static u_char *ngx_http_proxy_log_cache_state(ngx_http_request_t *r,
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24 u_char *buf, uintptr_t data);
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25 static u_char *ngx_http_proxy_log_reason(ngx_http_request_t *r, u_char *buf,
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26 uintptr_t data);
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28
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27 #endif
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0
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28
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28
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29 static ngx_int_t ngx_http_proxy_add_log_formats(ngx_conf_t *cf);
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0
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30 static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf);
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31 static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf,
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32 void *parent, void *child);
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33
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34 static char *ngx_http_proxy_set_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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35 void *conf);
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36 static char *ngx_http_proxy_parse_upstream(ngx_str_t *url,
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37 ngx_http_proxy_upstream_conf_t *u);
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38
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34
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39 static char *ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd,
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40 void *conf);
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2
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41 static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data);
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42
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43 static ngx_conf_post_t ngx_http_proxy_lowat_post =
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44 { ngx_http_proxy_lowat_check } ;
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45
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0
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46
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47 static ngx_conf_bitmask_t next_upstream_masks[] = {
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48 { ngx_string("error"), NGX_HTTP_PROXY_FT_ERROR },
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49 { ngx_string("timeout"), NGX_HTTP_PROXY_FT_TIMEOUT },
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50 { ngx_string("invalid_header"), NGX_HTTP_PROXY_FT_INVALID_HEADER },
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51 { ngx_string("http_500"), NGX_HTTP_PROXY_FT_HTTP_500 },
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52 { ngx_string("http_404"), NGX_HTTP_PROXY_FT_HTTP_404 },
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53 { ngx_null_string, 0 }
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54 };
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55
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56
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57 static ngx_conf_bitmask_t use_stale_masks[] = {
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58 { ngx_string("error"), NGX_HTTP_PROXY_FT_ERROR },
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59 { ngx_string("timeout"), NGX_HTTP_PROXY_FT_TIMEOUT },
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60 { ngx_string("invalid_header"), NGX_HTTP_PROXY_FT_INVALID_HEADER },
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61 { ngx_string("http_500"), NGX_HTTP_PROXY_FT_HTTP_500 },
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62 { ngx_string("busy_lock"), NGX_HTTP_PROXY_FT_BUSY_LOCK },
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63 { ngx_string("max_waiting"), NGX_HTTP_PROXY_FT_MAX_WAITING },
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64 { ngx_null_string, 0 }
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65 };
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66
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67
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68 static ngx_conf_num_bounds_t ngx_http_proxy_lm_factor_bounds = {
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69 ngx_conf_check_num_bounds, 0, 100
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70 };
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71
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72
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73 static ngx_command_t ngx_http_proxy_commands[] = {
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74
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75 { ngx_string("proxy_pass"),
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76 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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77 ngx_http_proxy_set_pass,
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78 NGX_HTTP_LOC_CONF_OFFSET,
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79 0,
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80 NULL },
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81
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82 { ngx_string("proxy_connect_timeout"),
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83 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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84 ngx_conf_set_msec_slot,
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85 NGX_HTTP_LOC_CONF_OFFSET,
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86 offsetof(ngx_http_proxy_loc_conf_t, connect_timeout),
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87 NULL },
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88
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89 { ngx_string("proxy_send_timeout"),
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90 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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91 ngx_conf_set_msec_slot,
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92 NGX_HTTP_LOC_CONF_OFFSET,
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93 offsetof(ngx_http_proxy_loc_conf_t, send_timeout),
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94 NULL },
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95
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2
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96 { ngx_string("proxy_send_lowat"),
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97 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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98 ngx_conf_set_size_slot,
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99 NGX_HTTP_LOC_CONF_OFFSET,
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100 offsetof(ngx_http_proxy_loc_conf_t, send_lowat),
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101 &ngx_http_proxy_lowat_post },
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102
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0
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103 { ngx_string("proxy_preserve_host"),
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104 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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105 ngx_conf_set_flag_slot,
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106 NGX_HTTP_LOC_CONF_OFFSET,
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107 offsetof(ngx_http_proxy_loc_conf_t, preserve_host),
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108 NULL },
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109
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6
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110 { ngx_string("proxy_set_x_url"),
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111 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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112 ngx_conf_set_flag_slot,
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113 NGX_HTTP_LOC_CONF_OFFSET,
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114 offsetof(ngx_http_proxy_loc_conf_t, set_x_url),
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115 NULL },
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116
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0
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117 { ngx_string("proxy_set_x_real_ip"),
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118 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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119 ngx_conf_set_flag_slot,
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120 NGX_HTTP_LOC_CONF_OFFSET,
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121 offsetof(ngx_http_proxy_loc_conf_t, set_x_real_ip),
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122 NULL },
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123
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34
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124 { ngx_string("proxy_set_x_var"),
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125 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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126 ngx_http_proxy_set_x_var,
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127 NGX_HTTP_LOC_CONF_OFFSET,
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128 0,
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129 NULL },
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130
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0
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131 { ngx_string("proxy_add_x_forwarded_for"),
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132 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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133 ngx_conf_set_flag_slot,
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134 NGX_HTTP_LOC_CONF_OFFSET,
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135 offsetof(ngx_http_proxy_loc_conf_t, add_x_forwarded_for),
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136 NULL },
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137
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138 { ngx_string("proxy_header_buffer_size"),
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139 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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140 ngx_conf_set_size_slot,
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141 NGX_HTTP_LOC_CONF_OFFSET,
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142 offsetof(ngx_http_proxy_loc_conf_t, header_buffer_size),
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143 NULL },
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144
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145 { ngx_string("proxy_read_timeout"),
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146 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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147 ngx_conf_set_msec_slot,
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148 NGX_HTTP_LOC_CONF_OFFSET,
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149 offsetof(ngx_http_proxy_loc_conf_t, read_timeout),
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150 NULL },
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151
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152 { ngx_string("proxy_buffers"),
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153 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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154 ngx_conf_set_bufs_slot,
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155 NGX_HTTP_LOC_CONF_OFFSET,
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156 offsetof(ngx_http_proxy_loc_conf_t, bufs),
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157 NULL },
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158
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159 { ngx_string("proxy_busy_buffers_size"),
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160 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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161 ngx_conf_set_size_slot,
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162 NGX_HTTP_LOC_CONF_OFFSET,
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163 offsetof(ngx_http_proxy_loc_conf_t, busy_buffers_size),
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164 NULL },
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165
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26
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166 #if 0
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0
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167
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168 { ngx_string("proxy_cache_path"),
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169 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
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170 ngx_conf_set_path_slot,
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171 NGX_HTTP_LOC_CONF_OFFSET,
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172 offsetof(ngx_http_proxy_loc_conf_t, cache_path),
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26
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173 (void *) ngx_http_cache_cleaner_handler },
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0
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174
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175 #endif
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176
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177 { ngx_string("proxy_temp_path"),
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178 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
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179 ngx_conf_set_path_slot,
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180 NGX_HTTP_LOC_CONF_OFFSET,
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181 offsetof(ngx_http_proxy_loc_conf_t, temp_path),
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182 (void *) ngx_garbage_collector_temp_handler },
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183
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16
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184 { ngx_string("proxy_max_temp_file_size"),
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185 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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186 ngx_conf_set_size_slot,
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187 NGX_HTTP_LOC_CONF_OFFSET,
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188 offsetof(ngx_http_proxy_loc_conf_t, max_temp_file_size),
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189 NULL },
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190
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0
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191 { ngx_string("proxy_temp_file_write_size"),
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192 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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193 ngx_conf_set_size_slot,
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194 NGX_HTTP_LOC_CONF_OFFSET,
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195 offsetof(ngx_http_proxy_loc_conf_t, temp_file_write_size),
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196 NULL },
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197
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198 { ngx_string("proxy_cache"),
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199 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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200 ngx_conf_set_flag_slot,
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201 NGX_HTTP_LOC_CONF_OFFSET,
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202 offsetof(ngx_http_proxy_loc_conf_t, cache),
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203 NULL },
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204
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205
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206 { ngx_string("proxy_busy_lock"),
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207 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE13,
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208 ngx_http_set_busy_lock_slot,
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209 NGX_HTTP_LOC_CONF_OFFSET,
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210 offsetof(ngx_http_proxy_loc_conf_t, busy_lock),
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211 NULL },
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212
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213
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214 { ngx_string("proxy_pass_server"),
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215 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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216 ngx_conf_set_flag_slot,
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217 NGX_HTTP_LOC_CONF_OFFSET,
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218 offsetof(ngx_http_proxy_loc_conf_t, pass_server),
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219 NULL },
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220
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221 { ngx_string("proxy_pass_x_accel_expires"),
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222 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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223 ngx_conf_set_flag_slot,
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224 NGX_HTTP_LOC_CONF_OFFSET,
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225 offsetof(ngx_http_proxy_loc_conf_t, pass_x_accel_expires),
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226 NULL },
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227
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228 { ngx_string("proxy_ignore_expires"),
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229 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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230 ngx_conf_set_flag_slot,
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231 NGX_HTTP_LOC_CONF_OFFSET,
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232 offsetof(ngx_http_proxy_loc_conf_t, ignore_expires),
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233 NULL },
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234
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235 { ngx_string("proxy_lm_factor"),
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236 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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237 ngx_conf_set_num_slot,
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238 NGX_HTTP_LOC_CONF_OFFSET,
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239 offsetof(ngx_http_proxy_loc_conf_t, lm_factor),
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240 &ngx_http_proxy_lm_factor_bounds },
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241
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242 { ngx_string("proxy_default_expires"),
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243 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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244 ngx_conf_set_sec_slot,
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245 NGX_HTTP_LOC_CONF_OFFSET,
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246 offsetof(ngx_http_proxy_loc_conf_t, default_expires),
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247 NULL },
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248
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249 { ngx_string("proxy_next_upstream"),
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250 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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251 ngx_conf_set_bitmask_slot,
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252 NGX_HTTP_LOC_CONF_OFFSET,
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253 offsetof(ngx_http_proxy_loc_conf_t, next_upstream),
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254 &next_upstream_masks },
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255
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256 { ngx_string("proxy_use_stale"),
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257 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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258 ngx_conf_set_bitmask_slot,
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259 NGX_HTTP_LOC_CONF_OFFSET,
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260 offsetof(ngx_http_proxy_loc_conf_t, use_stale),
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261 &use_stale_masks },
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262
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263 ngx_null_command
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264 };
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265
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266
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267 ngx_http_module_t ngx_http_proxy_module_ctx = {
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28
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268 ngx_http_proxy_add_log_formats, /* pre conf */
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0
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269
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270 NULL, /* create main configuration */
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271 NULL, /* init main configuration */
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272
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273 NULL, /* create server configuration */
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274 NULL, /* merge server configuration */
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275
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276 ngx_http_proxy_create_loc_conf, /* create location configration */
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277 ngx_http_proxy_merge_loc_conf /* merge location configration */
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278 };
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279
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280
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281 ngx_module_t ngx_http_proxy_module = {
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282 NGX_MODULE,
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283 &ngx_http_proxy_module_ctx, /* module context */
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284 ngx_http_proxy_commands, /* module directives */
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285 NGX_HTTP_MODULE, /* module type */
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286 NULL, /* init module */
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28
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287 NULL /* init process */
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0
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288 };
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289
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290
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291
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292 static ngx_http_log_op_name_t ngx_http_proxy_log_fmt_ops[] = {
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28
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293 { ngx_string("proxy"), 0, NULL,
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294 ngx_http_proxy_log_proxy_state_getlen,
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295 ngx_http_proxy_log_proxy_state },
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296
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297 #if 0
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22
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298 { ngx_string("proxy_cache_state"), 0, ngx_http_proxy_log_cache_state },
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299 { ngx_string("proxy_reason"), 0, ngx_http_proxy_log_reason },
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28
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300 #endif
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301
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302 { ngx_null_string, 0, NULL, NULL, NULL }
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0
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303 };
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304
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305
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306
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307 ngx_http_header_t ngx_http_proxy_headers_in[] = {
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308 { ngx_string("Date"), offsetof(ngx_http_proxy_headers_in_t, date) },
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309 { ngx_string("Server"), offsetof(ngx_http_proxy_headers_in_t, server) },
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310
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311 { ngx_string("Expires"), offsetof(ngx_http_proxy_headers_in_t, expires) },
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312 { ngx_string("Cache-Control"),
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313 offsetof(ngx_http_proxy_headers_in_t, cache_control) },
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314 { ngx_string("ETag"), offsetof(ngx_http_proxy_headers_in_t, etag) },
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315 { ngx_string("X-Accel-Expires"),
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316 offsetof(ngx_http_proxy_headers_in_t, x_accel_expires) },
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317
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318 { ngx_string("Connection"),
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319 offsetof(ngx_http_proxy_headers_in_t, connection) },
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320 { ngx_string("Content-Type"),
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321 offsetof(ngx_http_proxy_headers_in_t, content_type) },
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322 { ngx_string("Content-Length"),
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323 offsetof(ngx_http_proxy_headers_in_t, content_length) },
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28
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324
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325 #if (NGX_HTTP_GZIP)
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4
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326 { ngx_string("Content-Encoding"),
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327 offsetof(ngx_http_proxy_headers_in_t, content_encoding) },
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28
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328 #endif
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329
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0
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330 { ngx_string("Last-Modified"),
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331 offsetof(ngx_http_proxy_headers_in_t, last_modified) },
|
|
|
332 { ngx_string("Location"),
|
|
|
333 offsetof(ngx_http_proxy_headers_in_t, location) },
|
|
|
334 { ngx_string("Accept-Ranges"),
|
|
|
335 offsetof(ngx_http_proxy_headers_in_t, accept_ranges) },
|
|
|
336 { ngx_string("X-Pad"), offsetof(ngx_http_proxy_headers_in_t, x_pad) },
|
|
|
337
|
|
|
338 { ngx_null_string, 0 }
|
|
|
339 };
|
|
|
340
|
|
|
341
|
|
|
342 static ngx_str_t cache_states[] = {
|
|
|
343 ngx_string("PASS"),
|
|
|
344 ngx_string("BYPASS"),
|
|
|
345 ngx_string("AUTH"),
|
|
|
346 ngx_string("PGNC"),
|
|
|
347 ngx_string("MISS"),
|
|
|
348 ngx_string("EXPR"),
|
|
|
349 ngx_string("AGED"),
|
|
|
350 ngx_string("HIT")
|
|
|
351 };
|
|
|
352
|
|
|
353
|
|
|
354 static ngx_str_t cache_reasons[] = {
|
|
|
355 ngx_string("BPS"),
|
|
|
356 ngx_string("XAE"),
|
|
|
357 ngx_string("CTL"),
|
|
|
358 ngx_string("EXP"),
|
|
|
359 ngx_string("MVD"),
|
|
|
360 ngx_string("LMF"),
|
|
|
361 ngx_string("PDE")
|
|
|
362 };
|
|
|
363
|
|
|
364
|
|
|
365 static ngx_int_t ngx_http_proxy_handler(ngx_http_request_t *r)
|
|
|
366 {
|
|
|
367 ngx_http_proxy_ctx_t *p;
|
|
|
368
|
|
|
369 ngx_http_create_ctx(r, p, ngx_http_proxy_module,
|
|
|
370 sizeof(ngx_http_proxy_ctx_t),
|
|
|
371 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
372
|
|
|
373 p->lcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
|
374 p->request = r;
|
|
|
375
|
|
|
376 /* TODO: we currently support reverse proxy only */
|
|
|
377 p->accel = 1;
|
|
|
378
|
|
26
|
379 if (ngx_array_init(&p->states, r->pool, p->lcf->peers->number,
|
|
|
380 sizeof(ngx_http_proxy_state_t)) == NGX_ERROR)
|
|
|
381 {
|
|
|
382 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
383 }
|
|
0
|
384
|
|
26
|
385 if (!(p->state = ngx_array_push(&p->states))) {
|
|
0
|
386 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
387 }
|
|
|
388
|
|
|
389 ngx_memzero(p->state, sizeof(ngx_http_proxy_state_t));
|
|
|
390
|
|
26
|
391 #if 0
|
|
0
|
392
|
|
|
393 if (!p->lcf->cache
|
|
|
394 || (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD))
|
|
|
395 {
|
|
|
396 p->state->cache_state = NGX_HTTP_PROXY_CACHE_PASS;
|
|
|
397
|
|
|
398 } else if (r->bypass_cache) {
|
|
|
399 p->state->cache_state = NGX_HTTP_PROXY_CACHE_BYPASS;
|
|
|
400
|
|
|
401 } else if (r->headers_in.authorization) {
|
|
|
402 p->state->cache_state = NGX_HTTP_PROXY_CACHE_AUTH;
|
|
|
403
|
|
|
404 } else if (r->no_cache) {
|
|
|
405 p->state->cache_state = NGX_HTTP_PROXY_CACHE_PGNC;
|
|
|
406 p->cachable = 1;
|
|
|
407
|
|
|
408 } else {
|
|
|
409 p->cachable = 1;
|
|
|
410 }
|
|
|
411
|
|
|
412
|
|
|
413 if (p->state->cache_state != 0) {
|
|
|
414 return ngx_http_proxy_request_upstream(p);
|
|
|
415 }
|
|
|
416
|
|
26
|
417 return ngx_http_proxy_cache_get(p);
|
|
0
|
418
|
|
|
419 #else
|
|
|
420
|
|
|
421 p->state->cache_state = NGX_HTTP_PROXY_CACHE_PASS;
|
|
|
422
|
|
|
423 return ngx_http_proxy_request_upstream(p);
|
|
|
424
|
|
|
425 #endif
|
|
|
426 }
|
|
|
427
|
|
|
428
|
|
26
|
429 #if 0
|
|
|
430
|
|
|
431 static ngx_int_t ngx_http_proxy_cache_get(ngx_http_proxy_ctx_t *p)
|
|
|
432 {
|
|
|
433 u_char *last;
|
|
|
434 ngx_http_request_t *r;
|
|
|
435 ngx_http_cache_ctx_t ctx;
|
|
|
436 ngx_http_proxy_upstream_conf_t *u;
|
|
|
437
|
|
|
438 r = p->request;
|
|
|
439 u = p->lcf->upstream;
|
|
|
440
|
|
|
441 ctx.key.len = u->url.len + r->uri.len - u->location->len + r->args.len;
|
|
|
442 if (!(ctx.key.data = ngx_palloc(r->pool, ctx.key.len))) {
|
|
|
443 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
444 }
|
|
|
445
|
|
|
446 last = ngx_cpymem(ctx.key.data, u->url.data, u->url.len);
|
|
|
447
|
|
|
448 last = ngx_cpymem(last, r->uri.data + u->location->len,
|
|
|
449 r->uri.len - u->location->len);
|
|
|
450
|
|
|
451 if (r->args.len > 0) {
|
|
|
452 *(last++) = '?';
|
|
|
453 last = ngx_cpymem(last, r->args.data, r->args.len);
|
|
|
454 }
|
|
|
455
|
|
|
456 p->header_in = ngx_create_temp_buf(r->pool, p->lcf->header_buffer_size);
|
|
|
457 if (p->header_in == NULL) {
|
|
|
458 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
459 }
|
|
|
460 p->header_in->tag = (ngx_buf_tag_t) &ngx_http_proxy_module;
|
|
|
461
|
|
|
462 ctx.buf = p->header_in;
|
|
|
463 ctx.path = p->lcf->cache_path;
|
|
|
464 ctx.file = 1;
|
|
|
465 ctx.primary = 1;
|
|
|
466
|
|
|
467 ngx_http_cache_get(r, &ctx);
|
|
|
468
|
|
|
469 return ngx_http_proxy_request_upstream(p);
|
|
|
470 }
|
|
|
471
|
|
|
472 #endif
|
|
|
473
|
|
|
474
|
|
0
|
475 void ngx_http_proxy_check_broken_connection(ngx_event_t *ev)
|
|
|
476 {
|
|
|
477 int n;
|
|
|
478 char buf[1];
|
|
|
479 ngx_err_t err;
|
|
|
480 ngx_connection_t *c;
|
|
|
481 ngx_http_request_t *r;
|
|
|
482 ngx_http_proxy_ctx_t *p;
|
|
|
483
|
|
|
484 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
485 "http proxy check client, write event:%d", ev->write);
|
|
|
486
|
|
18
|
487 #if (NGX_HAVE_KQUEUE)
|
|
0
|
488
|
|
4
|
489 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
490
|
|
|
491 if (!ev->pending_eof) {
|
|
|
492 return;
|
|
|
493 }
|
|
|
494
|
|
|
495 c = ev->data;
|
|
|
496 r = c->data;
|
|
|
497 p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
|
|
498
|
|
|
499 ev->eof = 1;
|
|
|
500
|
|
|
501 if (ev->kq_errno) {
|
|
|
502 ev->error = 1;
|
|
|
503 }
|
|
|
504
|
|
|
505 if (!p->cachable && p->upstream->peer.connection) {
|
|
|
506 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
507 "kevent() reported that client closed "
|
|
|
508 "prematurely connection, "
|
|
|
509 "so upstream connection is closed too");
|
|
|
510 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
511 return;
|
|
|
512 }
|
|
|
513
|
|
|
514 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
515 "kevent() reported that client closed "
|
|
|
516 "prematurely connection");
|
|
|
517
|
|
|
518 if (p->upstream == NULL || p->upstream->peer.connection == NULL) {
|
|
|
519 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
520 }
|
|
|
521
|
|
|
522 return;
|
|
|
523 }
|
|
|
524
|
|
|
525 #endif
|
|
|
526
|
|
|
527 c = ev->data;
|
|
|
528 r = c->data;
|
|
|
529 p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
|
|
530
|
|
|
531 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
532
|
|
|
533 err = ngx_socket_errno;
|
|
|
534
|
|
|
535 /*
|
|
|
536 * we do not need to disable the write event because
|
|
|
537 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
538 */
|
|
|
539
|
|
|
540 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
541 return;
|
|
|
542 }
|
|
|
543
|
|
|
544 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
545 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
546 ngx_http_proxy_finalize_request(p, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
547 }
|
|
|
548 }
|
|
|
549
|
|
|
550 if (n > 0) {
|
|
|
551 return;
|
|
|
552 }
|
|
|
553
|
|
|
554 ev->eof = 1;
|
|
|
555
|
|
|
556 if (n == -1) {
|
|
|
557 if (err == NGX_EAGAIN) {
|
|
|
558 return;
|
|
|
559 }
|
|
|
560
|
|
|
561 ev->error = 1;
|
|
|
562
|
|
|
563 } else {
|
|
|
564 /* n == 0 */
|
|
|
565 err = 0;
|
|
|
566 }
|
|
|
567
|
|
|
568 if (!p->cachable && p->upstream->peer.connection) {
|
|
|
569 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
570 "client closed prematurely connection, "
|
|
|
571 "so upstream connection is closed too");
|
|
|
572 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
573 return;
|
|
|
574 }
|
|
|
575
|
|
|
576 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
577 "client closed prematurely connection");
|
|
|
578
|
|
|
579 if (p->upstream == NULL || p->upstream->peer.connection == NULL) {
|
|
|
580 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
581 }
|
|
|
582 }
|
|
|
583
|
|
|
584
|
|
|
585 void ngx_http_proxy_busy_lock_handler(ngx_event_t *rev)
|
|
|
586 {
|
|
|
587 ngx_connection_t *c;
|
|
|
588 ngx_http_request_t *r;
|
|
|
589 ngx_http_proxy_ctx_t *p;
|
|
|
590
|
|
|
591 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http proxy busy lock");
|
|
|
592
|
|
|
593 c = rev->data;
|
|
|
594 r = c->data;
|
|
|
595 p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
|
|
596 p->action = "waiting upstream in busy lock";
|
|
|
597
|
|
|
598 if (p->request->connection->write->eof) {
|
|
|
599 ngx_http_busy_unlock(p->lcf->busy_lock, &p->busy_lock);
|
|
|
600 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
601 return;
|
|
|
602 }
|
|
|
603
|
|
|
604 if (rev->timedout) {
|
|
|
605 rev->timedout = 0;
|
|
|
606 p->busy_lock.time++;
|
|
|
607 p->state->bl_time = p->busy_lock.time;
|
|
|
608
|
|
|
609 #if (NGX_HTTP_FILE_CACHE)
|
|
|
610
|
|
|
611 if (p->state->cache_state < NGX_HTTP_PROXY_CACHE_MISS) {
|
|
|
612 ngx_http_proxy_upstream_busy_lock(p);
|
|
|
613
|
|
|
614 } else {
|
|
|
615 ngx_http_proxy_cache_busy_lock(p);
|
|
|
616 }
|
|
|
617 #else
|
|
|
618
|
|
|
619 ngx_http_proxy_upstream_busy_lock(p);
|
|
|
620
|
|
|
621 #endif
|
|
|
622
|
|
|
623 return;
|
|
|
624 }
|
|
|
625
|
|
|
626 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
627 "http proxy: client sent while busy lock");
|
|
|
628
|
|
|
629 /*
|
|
|
630 * TODO: kevent() notify about error, otherwise we need to
|
|
|
631 * call ngx_peek(): recv(MSG_PEEK) to get errno. THINK about aio.
|
|
|
632 * if there's no error we need to disable event.
|
|
|
633 */
|
|
|
634
|
|
|
635 #if 0
|
|
18
|
636 #if (NGX_HAVE_KQUEUE)
|
|
0
|
637
|
|
18
|
638 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && rev->kq_eof) {
|
|
0
|
639 ngx_http_busy_unlock(p->lcf->busy_lock, &p->busy_lock);
|
|
|
640
|
|
|
641 ngx_del_timer(rev);
|
|
|
642
|
|
|
643 ngx_log_error(NGX_LOG_ERR, c->log, rev->kq_errno,
|
|
|
644 "client() closed connection");
|
|
|
645
|
|
|
646 if (ngx_del_event(rev, NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR) {
|
|
|
647 ngx_http_proxy_finalize_request(p, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
648 return;
|
|
|
649 }
|
|
|
650
|
|
|
651 ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
652 return;
|
|
|
653 }
|
|
|
654
|
|
|
655 #endif
|
|
|
656 #endif
|
|
|
657
|
|
|
658 }
|
|
|
659
|
|
|
660
|
|
|
661 void ngx_http_proxy_finalize_request(ngx_http_proxy_ctx_t *p, int rc)
|
|
|
662 {
|
|
|
663 ngx_http_request_t *r;
|
|
|
664
|
|
|
665 r = p->request;
|
|
|
666
|
|
|
667 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
668 "finalize http proxy request");
|
|
|
669
|
|
|
670 if (p->upstream && p->upstream->peer.connection) {
|
|
|
671 ngx_http_proxy_close_connection(p);
|
|
|
672 }
|
|
|
673
|
|
|
674 if (p->header_sent
|
|
|
675 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
676 {
|
|
|
677 rc = 0;
|
|
|
678 }
|
|
|
679
|
|
|
680 if (p->saved_ctx) {
|
|
|
681 r->connection->log->data = p->saved_ctx;
|
|
|
682 r->connection->log->handler = p->saved_handler;
|
|
|
683 }
|
|
|
684
|
|
|
685 if (p->upstream && p->upstream->event_pipe) {
|
|
|
686 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
687 "http proxy temp fd: %d",
|
|
|
688 p->upstream->event_pipe->temp_file->file.fd);
|
|
|
689 }
|
|
|
690
|
|
|
691 if (p->cache) {
|
|
|
692 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
693 "http proxy cache fd: %d",
|
|
|
694 p->cache->ctx.file.fd);
|
|
|
695 }
|
|
|
696
|
|
|
697 if (p->upstream && p->upstream->event_pipe) {
|
|
|
698 r->file.fd = p->upstream->event_pipe->temp_file->file.fd;
|
|
|
699
|
|
|
700 } else if (p->cache) {
|
|
|
701 r->file.fd = p->cache->ctx.file.fd;
|
|
|
702 }
|
|
|
703
|
|
|
704 if (rc == 0 && r->main == NULL) {
|
|
|
705 rc = ngx_http_send_last(r);
|
|
|
706 }
|
|
|
707
|
|
|
708 ngx_http_finalize_request(r, rc);
|
|
|
709 }
|
|
|
710
|
|
|
711
|
|
|
712 void ngx_http_proxy_close_connection(ngx_http_proxy_ctx_t *p)
|
|
|
713 {
|
|
|
714 ngx_socket_t fd;
|
|
|
715 ngx_connection_t *c;
|
|
|
716
|
|
|
717 c = p->upstream->peer.connection;
|
|
|
718 p->upstream->peer.connection = NULL;
|
|
|
719
|
|
|
720 if (p->lcf->busy_lock) {
|
|
|
721 p->lcf->busy_lock->busy--;
|
|
|
722 }
|
|
|
723
|
|
|
724 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
725 "http proxy close connection: %d", c->fd);
|
|
|
726
|
|
|
727 if (c->fd == -1) {
|
|
|
728 #if 0
|
|
|
729 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
730 #endif
|
|
|
731 return;
|
|
|
732 }
|
|
|
733
|
|
|
734 if (c->read->timer_set) {
|
|
|
735 ngx_del_timer(c->read);
|
|
|
736 }
|
|
|
737
|
|
|
738 if (c->write->timer_set) {
|
|
|
739 ngx_del_timer(c->write);
|
|
|
740 }
|
|
|
741
|
|
|
742 /* TODO: move connection to the connection pool */
|
|
|
743
|
|
|
744 if (ngx_del_conn) {
|
|
|
745 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
746
|
|
|
747 } else {
|
|
|
748 if (c->read->active || c->read->disabled) {
|
|
|
749 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
750 }
|
|
|
751
|
|
|
752 if (c->write->active || c->read->disabled) {
|
|
|
753 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
754 }
|
|
|
755 }
|
|
|
756
|
|
|
757 /*
|
|
|
758 * we have to clean the connection information before the closing
|
|
|
759 * because another thread may reopen the same file descriptor
|
|
|
760 * before we clean the connection
|
|
|
761 */
|
|
|
762
|
|
|
763 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_OK) {
|
|
|
764
|
|
|
765 if (c->read->prev) {
|
|
|
766 ngx_delete_posted_event(c->read);
|
|
|
767 }
|
|
|
768
|
|
|
769 if (c->write->prev) {
|
|
|
770 ngx_delete_posted_event(c->write);
|
|
|
771 }
|
|
|
772
|
|
|
773 c->read->closed = 1;
|
|
|
774 c->write->closed = 1;
|
|
|
775
|
|
|
776 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
|
777 }
|
|
|
778
|
|
|
779 fd = c->fd;
|
|
|
780 c->fd = (ngx_socket_t) -1;
|
|
|
781 c->data = NULL;
|
|
|
782
|
|
|
783 if (ngx_close_socket(fd) == -1) {
|
|
|
784 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
|
|
|
785 ngx_close_socket_n " failed");
|
|
|
786 }
|
|
|
787 }
|
|
|
788
|
|
|
789
|
|
32
|
790 u_char *ngx_http_proxy_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
0
|
791 {
|
|
10
|
792 u_char *p;
|
|
|
793 ngx_int_t escape;
|
|
|
794 ngx_str_t uri;
|
|
|
795 ngx_http_request_t *r;
|
|
|
796 ngx_peer_connection_t *peer;
|
|
32
|
797 ngx_http_proxy_log_ctx_t *ctx;
|
|
10
|
798 ngx_http_proxy_upstream_conf_t *uc;
|
|
0
|
799
|
|
32
|
800 ctx = log->data;
|
|
0
|
801 r = ctx->proxy->request;
|
|
10
|
802 uc = ctx->proxy->lcf->upstream;
|
|
0
|
803 peer = &ctx->proxy->upstream->peer;
|
|
|
804
|
|
10
|
805 p = ngx_snprintf(buf, len,
|
|
28
|
806 " while %s, client: %V, URL: %V, upstream: http://%V%s%V",
|
|
10
|
807 ctx->proxy->action,
|
|
|
808 &r->connection->addr_text,
|
|
|
809 &r->unparsed_uri,
|
|
28
|
810 &peer->peers->peer[peer->cur_peer].name,
|
|
|
811 ctx->proxy->lcf->upstream->uri_separator,
|
|
10
|
812 &ctx->proxy->lcf->upstream->uri);
|
|
|
813 len -= p - buf;
|
|
|
814 buf = p;
|
|
|
815
|
|
|
816 if (r->quoted_uri) {
|
|
|
817 escape = 2 * ngx_escape_uri(NULL, r->uri.data + uc->location->len,
|
|
|
818 r->uri.len - uc->location->len,
|
|
|
819 NGX_ESCAPE_URI);
|
|
|
820 } else {
|
|
|
821 escape = 0;
|
|
|
822 }
|
|
|
823
|
|
|
824 if (escape) {
|
|
|
825 if (len >= r->uri.len - uc->location->len + escape) {
|
|
|
826
|
|
|
827 ngx_escape_uri(buf, r->uri.data + uc->location->len,
|
|
|
828 r->uri.len - uc->location->len, NGX_ESCAPE_URI);
|
|
|
829
|
|
|
830 buf += r->uri.len - uc->location->len + escape;
|
|
|
831
|
|
|
832 if (r->args.len == 0) {
|
|
|
833 return buf;
|
|
|
834 }
|
|
|
835
|
|
|
836 len -= r->uri.len - uc->location->len + escape;
|
|
|
837
|
|
|
838 return ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
839 }
|
|
|
840
|
|
|
841 p = ngx_palloc(r->pool, r->uri.len - uc->location->len + escape);
|
|
|
842 if (p == NULL) {
|
|
|
843 return buf;
|
|
|
844 }
|
|
|
845
|
|
|
846 ngx_escape_uri(p, r->uri.data + uc->location->len,
|
|
|
847 r->uri.len - uc->location->len, NGX_ESCAPE_URI);
|
|
|
848
|
|
|
849 uri.len = r->uri.len - uc->location->len + escape;
|
|
|
850 uri.data = p;
|
|
|
851
|
|
|
852 } else {
|
|
|
853 uri.len = r->uri.len - uc->location->len;
|
|
|
854 uri.data = r->uri.data + uc->location->len;
|
|
|
855
|
|
|
856 }
|
|
|
857
|
|
|
858 return ngx_snprintf(buf, len, "%V%s%V",
|
|
|
859 &uri, r->args.len ? "?" : "", &r->args);
|
|
0
|
860 }
|
|
|
861
|
|
|
862
|
|
28
|
863 static size_t ngx_http_proxy_log_proxy_state_getlen(ngx_http_request_t *r,
|
|
|
864 uintptr_t data)
|
|
|
865 {
|
|
|
866 ngx_http_proxy_ctx_t *p;
|
|
|
867
|
|
|
868 p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module);
|
|
|
869
|
|
|
870 if (p == NULL) {
|
|
|
871 return 1;
|
|
|
872 }
|
|
|
873
|
|
|
874 return p->states.nelts * /* STUB */ 100;
|
|
|
875 }
|
|
|
876
|
|
|
877
|
|
0
|
878 static u_char *ngx_http_proxy_log_proxy_state(ngx_http_request_t *r,
|
|
28
|
879 u_char *buf,
|
|
|
880 ngx_http_log_op_t *op)
|
|
0
|
881 {
|
|
22
|
882 ngx_uint_t i;
|
|
|
883 ngx_http_proxy_ctx_t *p;
|
|
|
884 ngx_http_proxy_state_t *state;
|
|
0
|
885
|
|
|
886 p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module);
|
|
|
887
|
|
|
888 if (p == NULL) {
|
|
|
889 *buf = '-';
|
|
|
890 return buf + 1;
|
|
|
891 }
|
|
|
892
|
|
22
|
893 i = 0;
|
|
|
894 state = p->states.elts;
|
|
0
|
895
|
|
22
|
896 for ( ;; ) {
|
|
|
897 if (state[i].cache_state == 0) {
|
|
|
898 *buf++ = '-';
|
|
0
|
899
|
|
22
|
900 } else {
|
|
|
901 buf = ngx_cpymem(buf, cache_states[state[i].cache_state - 1].data,
|
|
|
902 cache_states[state[i].cache_state - 1].len);
|
|
|
903 }
|
|
0
|
904
|
|
22
|
905 *buf++ = '/';
|
|
|
906
|
|
|
907 if (state[i].expired == 0) {
|
|
|
908 *buf++ = '-';
|
|
0
|
909
|
|
22
|
910 } else {
|
|
|
911 buf = ngx_sprintf(buf, "%T", state[i].expired);
|
|
|
912 }
|
|
|
913
|
|
|
914 *buf++ = '/';
|
|
|
915
|
|
|
916 if (state[i].bl_time == 0) {
|
|
|
917 *buf++ = '-';
|
|
0
|
918
|
|
22
|
919 } else {
|
|
|
920 buf = ngx_sprintf(buf, "%T", state[i].bl_time);
|
|
|
921 }
|
|
0
|
922
|
|
22
|
923 *buf++ = '/';
|
|
|
924
|
|
|
925 *buf++ = '*';
|
|
|
926
|
|
|
927 *buf++ = ' ';
|
|
0
|
928
|
|
22
|
929 if (state[i].status == 0) {
|
|
|
930 *buf++ = '-';
|
|
|
931
|
|
|
932 } else {
|
|
|
933 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
934 }
|
|
0
|
935
|
|
22
|
936 *buf++ = '/';
|
|
|
937
|
|
|
938 if (state[i].reason == 0) {
|
|
|
939 *buf++ = '-';
|
|
|
940
|
|
|
941 } else {
|
|
|
942 buf = ngx_cpymem(buf, cache_reasons[state[i].reason - 1].data,
|
|
|
943 cache_reasons[state[i].reason - 1].len);
|
|
|
944 }
|
|
0
|
945
|
|
22
|
946 *buf++ = '/';
|
|
|
947
|
|
|
948 if (state[i].reason < NGX_HTTP_PROXY_CACHE_XAE) {
|
|
|
949 *buf++ = '-';
|
|
|
950
|
|
|
951 } else {
|
|
|
952 buf = ngx_sprintf(buf, "%T", state[i].expires);
|
|
|
953 }
|
|
0
|
954
|
|
22
|
955 *buf++ = ' ';
|
|
|
956 *buf++ = '*';
|
|
|
957
|
|
|
958 if (++i == p->states.nelts) {
|
|
|
959 return buf;
|
|
|
960 }
|
|
|
961
|
|
|
962 *buf++ = ',';
|
|
|
963 *buf++ = ' ';
|
|
0
|
964 }
|
|
|
965 }
|
|
|
966
|
|
|
967
|
|
28
|
968 #if 0
|
|
|
969
|
|
0
|
970 static u_char *ngx_http_proxy_log_cache_state(ngx_http_request_t *r,
|
|
|
971 u_char *buf, uintptr_t data)
|
|
|
972 {
|
|
22
|
973 ngx_uint_t i;
|
|
|
974 ngx_http_proxy_ctx_t *p;
|
|
|
975 ngx_http_proxy_state_t *state;
|
|
0
|
976
|
|
|
977 p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module);
|
|
|
978
|
|
|
979 if (p == NULL || p->state->cache_state == 0) {
|
|
22
|
980 if (buf == NULL) {
|
|
|
981 return (u_char *) 1;
|
|
|
982 }
|
|
|
983
|
|
0
|
984 *buf = '-';
|
|
|
985 return buf + 1;
|
|
|
986 }
|
|
|
987
|
|
22
|
988 if (buf == NULL) {
|
|
|
989 /* find the request line length */
|
|
|
990 return (u_char *) (p->states.nelts * sizeof("BYPASS") - 1);
|
|
|
991 }
|
|
|
992
|
|
|
993 i = 0;
|
|
|
994 state = p->states.elts;
|
|
|
995
|
|
|
996 for ( ;; ) {
|
|
|
997 buf = ngx_cpymem(buf, cache_states[state[i].cache_state - 1].data,
|
|
|
998 cache_states[state[i].cache_state - 1].len);
|
|
|
999
|
|
|
1000 if (++i == p->states.nelts) {
|
|
|
1001 return buf;
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 *buf++ = ',';
|
|
|
1005 *buf++ = ' ';
|
|
|
1006 }
|
|
0
|
1007 }
|
|
|
1008
|
|
|
1009
|
|
|
1010 static u_char *ngx_http_proxy_log_reason(ngx_http_request_t *r, u_char *buf,
|
|
|
1011 uintptr_t data)
|
|
|
1012 {
|
|
22
|
1013 ngx_uint_t i;
|
|
|
1014 ngx_http_proxy_ctx_t *p;
|
|
|
1015 ngx_http_proxy_state_t *state;
|
|
0
|
1016
|
|
|
1017 p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module);
|
|
|
1018
|
|
|
1019 if (p == NULL || p->state->reason == 0) {
|
|
22
|
1020 if (buf == NULL) {
|
|
|
1021 return (u_char *) 1;
|
|
|
1022 }
|
|
|
1023
|
|
0
|
1024 *buf = '-';
|
|
|
1025 return buf + 1;
|
|
|
1026 }
|
|
|
1027
|
|
22
|
1028 if (buf == NULL) {
|
|
|
1029 /* find the request line length */
|
|
|
1030 return (u_char *) (p->states.nelts * sizeof("BPS") - 1);
|
|
|
1031 }
|
|
|
1032
|
|
|
1033 i = 0;
|
|
|
1034 state = p->states.elts;
|
|
|
1035
|
|
|
1036 for ( ;; ) {
|
|
|
1037 buf = ngx_cpymem(buf, cache_reasons[state[i].reason - 1].data,
|
|
|
1038 cache_reasons[state[i].reason - 1].len);
|
|
|
1039
|
|
|
1040 if (++i == p->states.nelts) {
|
|
|
1041 return buf;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 *buf++ = ',';
|
|
|
1045 *buf++ = ' ';
|
|
|
1046 }
|
|
0
|
1047 }
|
|
|
1048
|
|
28
|
1049 #endif
|
|
0
|
1050
|
|
28
|
1051
|
|
|
1052 static ngx_int_t ngx_http_proxy_add_log_formats(ngx_conf_t *cf)
|
|
0
|
1053 {
|
|
|
1054 ngx_http_log_op_name_t *op;
|
|
|
1055
|
|
|
1056 for (op = ngx_http_proxy_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
28
|
1057 op->run = NULL;
|
|
0
|
1058
|
|
28
|
1059 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
0
|
1060 if (op->name.len == 0) {
|
|
28
|
1061 op = (ngx_http_log_op_name_t *) op->run;
|
|
0
|
1062 }
|
|
|
1063 }
|
|
|
1064
|
|
28
|
1065 op->run = (ngx_http_log_op_run_pt) ngx_http_proxy_log_fmt_ops;
|
|
0
|
1066
|
|
|
1067 return NGX_OK;
|
|
|
1068 }
|
|
|
1069
|
|
|
1070
|
|
|
1071 static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
|
|
|
1072 {
|
|
|
1073 ngx_http_proxy_loc_conf_t *conf;
|
|
|
1074
|
|
34
|
1075 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_loc_conf_t)))) {
|
|
|
1076 return NGX_CONF_ERROR;
|
|
|
1077 }
|
|
0
|
1078
|
|
28
|
1079 /*
|
|
|
1080 * set by ngx_pcalloc():
|
|
|
1081 *
|
|
|
1082 * conf->bufs.num = 0;
|
|
|
1083 * conf->path = NULL;
|
|
|
1084 * conf->next_upstream = 0;
|
|
|
1085 * conf->use_stale = 0;
|
|
|
1086 * conf->upstreams = NULL;
|
|
|
1087 * conf->peers = NULL;
|
|
|
1088 * conf->cache_path = NULL;
|
|
|
1089 * conf->temp_path = NULL;
|
|
34
|
1090 * conf->x_vars;
|
|
28
|
1091 * conf->busy_lock = NULL;
|
|
|
1092 */
|
|
0
|
1093
|
|
|
1094 conf->connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
1095 conf->send_timeout = NGX_CONF_UNSET_MSEC;
|
|
2
|
1096 conf->send_lowat = NGX_CONF_UNSET_SIZE;
|
|
0
|
1097
|
|
|
1098 conf->preserve_host = NGX_CONF_UNSET;
|
|
6
|
1099 conf->set_x_url = NGX_CONF_UNSET;
|
|
0
|
1100 conf->set_x_real_ip = NGX_CONF_UNSET;
|
|
|
1101 conf->add_x_forwarded_for = NGX_CONF_UNSET;
|
|
|
1102
|
|
|
1103 conf->header_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
1104 conf->read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
1105 conf->busy_buffers_size = NGX_CONF_UNSET_SIZE;
|
|
|
1106
|
|
16
|
1107 conf->max_temp_file_size = NGX_CONF_UNSET_SIZE;
|
|
0
|
1108 conf->temp_file_write_size = NGX_CONF_UNSET_SIZE;
|
|
|
1109
|
|
|
1110 /* "proxy_cyclic_temp_file" is disabled */
|
|
|
1111 conf->cyclic_temp_file = 0;
|
|
|
1112
|
|
|
1113 conf->cache = NGX_CONF_UNSET;
|
|
|
1114
|
|
|
1115 conf->pass_server = NGX_CONF_UNSET;
|
|
|
1116 conf->pass_x_accel_expires = NGX_CONF_UNSET;
|
|
|
1117 conf->ignore_expires = NGX_CONF_UNSET;
|
|
|
1118 conf->lm_factor = NGX_CONF_UNSET;
|
|
|
1119 conf->default_expires = NGX_CONF_UNSET;
|
|
|
1120
|
|
|
1121 return conf;
|
|
|
1122 }
|
|
|
1123
|
|
|
1124
|
|
|
1125 static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf,
|
|
|
1126 void *parent, void *child)
|
|
|
1127 {
|
|
|
1128 ngx_http_proxy_loc_conf_t *prev = parent;
|
|
|
1129 ngx_http_proxy_loc_conf_t *conf = child;
|
|
|
1130
|
|
|
1131 size_t size;
|
|
|
1132
|
|
|
1133 ngx_conf_merge_msec_value(conf->connect_timeout,
|
|
|
1134 prev->connect_timeout, 60000);
|
|
|
1135 ngx_conf_merge_msec_value(conf->send_timeout, prev->send_timeout, 60000);
|
|
2
|
1136 ngx_conf_merge_size_value(conf->send_lowat, prev->send_lowat, 0);
|
|
0
|
1137
|
|
|
1138 ngx_conf_merge_value(conf->preserve_host, prev->preserve_host, 0);
|
|
6
|
1139 ngx_conf_merge_value(conf->set_x_url, prev->set_x_url, 0);
|
|
0
|
1140 ngx_conf_merge_value(conf->set_x_real_ip, prev->set_x_real_ip, 0);
|
|
|
1141 ngx_conf_merge_value(conf->add_x_forwarded_for,
|
|
|
1142 prev->add_x_forwarded_for, 0);
|
|
|
1143
|
|
|
1144 ngx_conf_merge_msec_value(conf->read_timeout, prev->read_timeout, 60000);
|
|
|
1145
|
|
|
1146 ngx_conf_merge_size_value(conf->header_buffer_size,
|
|
|
1147 prev->header_buffer_size, (size_t) ngx_pagesize);
|
|
|
1148
|
|
|
1149 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 8, ngx_pagesize);
|
|
|
1150
|
|
|
1151 if (conf->bufs.num < 2) {
|
|
|
1152 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1153 "there must be at least 2 \"proxy_buffers\"");
|
|
|
1154 return NGX_CONF_ERROR;
|
|
|
1155 }
|
|
|
1156
|
|
|
1157 size = conf->header_buffer_size;
|
|
|
1158 if (size < conf->bufs.size) {
|
|
|
1159 size = conf->bufs.size;
|
|
|
1160 }
|
|
|
1161
|
|
|
1162
|
|
|
1163 ngx_conf_merge_size_value(conf->busy_buffers_size,
|
|
|
1164 prev->busy_buffers_size, NGX_CONF_UNSET_SIZE);
|
|
|
1165
|
|
|
1166 if (conf->busy_buffers_size == NGX_CONF_UNSET_SIZE) {
|
|
|
1167 conf->busy_buffers_size = 2 * size;
|
|
|
1168
|
|
|
1169 } else if (conf->busy_buffers_size < size) {
|
|
|
1170 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1171 "\"proxy_busy_buffers_size\" must be equal or bigger than "
|
|
|
1172 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
|
1173 "one of the \"proxy_buffers\"");
|
|
|
1174
|
|
|
1175 return NGX_CONF_ERROR;
|
|
|
1176
|
|
|
1177 } else if (conf->busy_buffers_size > (conf->bufs.num - 1) * conf->bufs.size)
|
|
|
1178 {
|
|
|
1179 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1180 "\"proxy_busy_buffers_size\" must be less than "
|
|
|
1181 "the size of all \"proxy_buffers\" minus one buffer");
|
|
|
1182
|
|
|
1183 return NGX_CONF_ERROR;
|
|
|
1184 }
|
|
|
1185
|
|
|
1186
|
|
|
1187 ngx_conf_merge_size_value(conf->temp_file_write_size,
|
|
|
1188 prev->temp_file_write_size, NGX_CONF_UNSET_SIZE);
|
|
|
1189
|
|
|
1190 if (conf->temp_file_write_size == NGX_CONF_UNSET_SIZE) {
|
|
|
1191 conf->temp_file_write_size = 2 * size;
|
|
|
1192
|
|
|
1193 } else if (conf->temp_file_write_size < size) {
|
|
|
1194 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1195 "\"proxy_temp_file_write_size\" must be equal or bigger than "
|
|
|
1196 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
|
1197 "one of the \"proxy_buffers\"");
|
|
|
1198
|
|
|
1199 return NGX_CONF_ERROR;
|
|
|
1200 }
|
|
|
1201
|
|
|
1202
|
|
|
1203 ngx_conf_merge_size_value(conf->max_temp_file_size,
|
|
|
1204 prev->max_temp_file_size, NGX_CONF_UNSET_SIZE);
|
|
|
1205
|
|
|
1206 if (conf->max_temp_file_size == NGX_CONF_UNSET_SIZE) {
|
|
16
|
1207
|
|
|
1208 /*
|
|
|
1209 * "proxy_max_temp_file_size" is set to 1G for reverse proxy,
|
|
|
1210 * it should be much less in the generic proxy
|
|
|
1211 */
|
|
|
1212
|
|
|
1213 conf->max_temp_file_size = 1024 * 1024 * 1024;
|
|
0
|
1214
|
|
16
|
1215 #if 0
|
|
|
1216 conf->max_temp_file_size = 2 * size;
|
|
|
1217 #endif
|
|
|
1218
|
|
|
1219
|
|
|
1220 } else if (conf->max_temp_file_size != 0
|
|
|
1221 && conf->max_temp_file_size < size)
|
|
|
1222 {
|
|
0
|
1223 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
16
|
1224 "\"proxy_max_temp_file_size\" must be equal to zero to disable "
|
|
|
1225 "the temporary files usage or must be equal or bigger than "
|
|
0
|
1226 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
|
1227 "one of the \"proxy_buffers\"");
|
|
|
1228
|
|
|
1229 return NGX_CONF_ERROR;
|
|
|
1230 }
|
|
|
1231
|
|
|
1232
|
|
|
1233 ngx_conf_merge_bitmask_value(conf->next_upstream, prev->next_upstream,
|
|
|
1234 (NGX_CONF_BITMASK_SET
|
|
|
1235 |NGX_HTTP_PROXY_FT_ERROR
|
|
|
1236 |NGX_HTTP_PROXY_FT_TIMEOUT));
|
|
|
1237
|
|
|
1238 ngx_conf_merge_bitmask_value(conf->use_stale, prev->use_stale,
|
|
|
1239 NGX_CONF_BITMASK_SET);
|
|
|
1240
|
|
28
|
1241 #if 0
|
|
0
|
1242 ngx_conf_merge_path_value(conf->cache_path, prev->cache_path,
|
|
28
|
1243 NGX_HTTP_PROXY_CACHE_PATH, 1, 2, 0,
|
|
|
1244 ngx_garbage_collector_temp_handler, cf);
|
|
|
1245 #endif
|
|
0
|
1246
|
|
|
1247 ngx_conf_merge_path_value(conf->temp_path, prev->temp_path,
|
|
28
|
1248 NGX_HTTP_PROXY_TEMP_PATH, 1, 2, 0,
|
|
|
1249 ngx_garbage_collector_temp_handler, cf);
|
|
0
|
1250
|
|
|
1251 ngx_conf_merge_value(conf->cache, prev->cache, 0);
|
|
|
1252
|
|
|
1253
|
|
|
1254 /* conf->cache must be merged */
|
|
|
1255
|
|
|
1256 if (conf->busy_lock == NULL) {
|
|
|
1257 conf->busy_lock = prev->busy_lock;
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 if (conf->busy_lock && conf->cache && conf->busy_lock->md5 == NULL) {
|
|
|
1261
|
|
|
1262 /* ngx_calloc_shared() */
|
|
|
1263 conf->busy_lock->md5_mask =
|
|
|
1264 ngx_pcalloc(cf->pool, (conf->busy_lock->max_busy + 7) / 8);
|
|
|
1265 if (conf->busy_lock->md5_mask == NULL) {
|
|
|
1266 return NGX_CONF_ERROR;
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 /* 16 bytes are 128 bits of the md5 */
|
|
|
1270
|
|
|
1271 /* ngx_alloc_shared() */
|
|
|
1272 conf->busy_lock->md5 = ngx_palloc(cf->pool,
|
|
|
1273 16 * conf->busy_lock->max_busy);
|
|
|
1274 if (conf->busy_lock->md5 == NULL) {
|
|
|
1275 return NGX_CONF_ERROR;
|
|
|
1276 }
|
|
|
1277 }
|
|
|
1278
|
|
|
1279
|
|
|
1280 ngx_conf_merge_value(conf->pass_server, prev->pass_server, 0);
|
|
|
1281 ngx_conf_merge_value(conf->pass_x_accel_expires,
|
|
|
1282 prev->pass_x_accel_expires, 0);
|
|
|
1283 ngx_conf_merge_value(conf->ignore_expires, prev->ignore_expires, 0);
|
|
|
1284 ngx_conf_merge_value(conf->lm_factor, prev->lm_factor, 0);
|
|
|
1285 ngx_conf_merge_sec_value(conf->default_expires, prev->default_expires, 0);
|
|
|
1286
|
|
|
1287 return NULL;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290
|
|
|
1291 static char *ngx_http_proxy_set_pass(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1292 void *conf)
|
|
|
1293 {
|
|
|
1294 ngx_http_proxy_loc_conf_t *lcf = conf;
|
|
|
1295
|
|
28
|
1296 ngx_str_t *value, *url;
|
|
|
1297 ngx_inet_upstream_t inet_upstream;
|
|
|
1298 ngx_http_core_loc_conf_t *clcf;
|
|
|
1299 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
1300 ngx_unix_domain_upstream_t unix_upstream;
|
|
|
1301 #endif
|
|
0
|
1302
|
|
|
1303 value = cf->args->elts;
|
|
|
1304
|
|
28
|
1305 url = &value[1];
|
|
|
1306
|
|
|
1307 if (ngx_strncasecmp(url->data, "http://", 7) != 0) {
|
|
2
|
1308 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix");
|
|
|
1309 return NGX_CONF_ERROR;
|
|
0
|
1310 }
|
|
|
1311
|
|
2
|
1312 lcf->upstream = ngx_pcalloc(cf->pool,
|
|
|
1313 sizeof(ngx_http_proxy_upstream_conf_t));
|
|
|
1314 if (lcf->upstream == NULL) {
|
|
|
1315 return NGX_CONF_ERROR;
|
|
|
1316 }
|
|
0
|
1317
|
|
34
|
1318 lcf->upstream->url = *url;
|
|
|
1319
|
|
28
|
1320 if (ngx_strncasecmp(url->data + 7, "unix:", 5) == 0) {
|
|
0
|
1321
|
|
28
|
1322 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
0
|
1323
|
|
28
|
1324 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
2
|
1325
|
|
28
|
1326 unix_upstream.name = *url;
|
|
|
1327 unix_upstream.url.len = url->len - 7;
|
|
|
1328 unix_upstream.url.data = url->data + 7;
|
|
|
1329 unix_upstream.uri_part = 1;
|
|
0
|
1330
|
|
28
|
1331 if (!(lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream))) {
|
|
2
|
1332 return NGX_CONF_ERROR;
|
|
|
1333 }
|
|
0
|
1334
|
|
28
|
1335 lcf->upstream->host_header.len = sizeof("localhost") - 1;
|
|
|
1336 lcf->upstream->host_header.data = (u_char *) "localhost";
|
|
|
1337 lcf->upstream->uri = unix_upstream.uri;
|
|
|
1338 lcf->upstream->uri_separator = ":";
|
|
|
1339 lcf->upstream->default_port = 1;
|
|
2
|
1340
|
|
28
|
1341 #else
|
|
|
1342 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1343 "the unix domain sockets are not supported "
|
|
|
1344 "on this platform");
|
|
|
1345 return NGX_CONF_ERROR;
|
|
0
|
1346
|
|
28
|
1347 #endif
|
|
0
|
1348
|
|
|
1349 } else {
|
|
28
|
1350 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
0
|
1351
|
|
28
|
1352 inet_upstream.name = *url;
|
|
|
1353 inet_upstream.url.len = url->len - 7;
|
|
|
1354 inet_upstream.url.data = url->data + 7;
|
|
|
1355 inet_upstream.default_port_value = 80;
|
|
|
1356 inet_upstream.uri_part = 1;
|
|
0
|
1357
|
|
28
|
1358 if (!(lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream))) {
|
|
2
|
1359 return NGX_CONF_ERROR;
|
|
|
1360 }
|
|
0
|
1361
|
|
28
|
1362 lcf->upstream->host_header = inet_upstream.host_header;
|
|
|
1363 lcf->upstream->port_text = inet_upstream.port_text;
|
|
|
1364 lcf->upstream->uri = inet_upstream.uri;
|
|
|
1365 lcf->upstream->uri_separator = "";
|
|
30
|
1366 lcf->upstream->default_port = inet_upstream.default_port;
|
|
0
|
1367 }
|
|
|
1368
|
|
|
1369 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
1370
|
|
|
1371 lcf->upstream->location = &clcf->name;
|
|
|
1372 clcf->handler = ngx_http_proxy_handler;
|
|
|
1373
|
|
|
1374 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
1375 clcf->auto_redirect = 1;
|
|
|
1376 }
|
|
|
1377
|
|
28
|
1378 return NGX_CONF_OK;
|
|
0
|
1379 }
|
|
2
|
1380
|
|
|
1381
|
|
34
|
1382 static char *ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1383 void *conf)
|
|
|
1384 {
|
|
|
1385 ngx_http_proxy_loc_conf_t *lcf = conf;
|
|
|
1386
|
|
|
1387 ngx_uint_t i, *index;
|
|
|
1388 ngx_str_t *value;
|
|
|
1389 ngx_http_variable_t *var;
|
|
|
1390 ngx_http_core_main_conf_t *cmcf;
|
|
|
1391
|
|
|
1392 if (lcf->x_vars.elts == NULL) {
|
|
|
1393 if (ngx_array_init(&lcf->x_vars, cf->pool, 4,
|
|
|
1394 sizeof(ngx_http_variable_t *)) == NGX_ERROR)
|
|
|
1395 {
|
|
|
1396 return NGX_CONF_ERROR;
|
|
|
1397 }
|
|
|
1398 }
|
|
|
1399
|
|
|
1400 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
1401
|
|
|
1402 value = cf->args->elts;
|
|
|
1403
|
|
|
1404 var = cmcf->variables.elts;
|
|
|
1405 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
1406 if (ngx_strcasecmp(var[i].name.data, value[1].data) == 0) {
|
|
|
1407
|
|
|
1408 if (!(index = ngx_array_push(&lcf->x_vars))) {
|
|
|
1409 return NGX_CONF_ERROR;
|
|
|
1410 }
|
|
|
1411
|
|
|
1412 *index = var[i].index;
|
|
|
1413 return NGX_CONF_OK;
|
|
|
1414 }
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1418 "unknown variable name \"%V\"", &value[1]);
|
|
|
1419 return NGX_CONF_ERROR;
|
|
|
1420 }
|
|
|
1421
|
|
|
1422
|
|
2
|
1423 static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data)
|
|
|
1424 {
|
|
22
|
1425 #if (NGX_FREEBSD)
|
|
4
|
1426 ssize_t *np = data;
|
|
2
|
1427
|
|
|
1428 if (*np >= ngx_freebsd_net_inet_tcp_sendspace) {
|
|
|
1429 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1430 "\"proxy_send_lowat\" must be less than %d "
|
|
|
1431 "(sysctl net.inet.tcp.sendspace)",
|
|
|
1432 ngx_freebsd_net_inet_tcp_sendspace);
|
|
|
1433
|
|
|
1434 return NGX_CONF_ERROR;
|
|
|
1435 }
|
|
|
1436
|
|
18
|
1437 #elif !(NGX_HAVE_SO_SNDLOWAT)
|
|
22
|
1438 ssize_t *np = data;
|
|
2
|
1439
|
|
|
1440 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
1441 "\"proxy_send_lowat\" is not supported, ignored");
|
|
|
1442
|
|
|
1443 *np = 0;
|
|
|
1444
|
|
|
1445 #endif
|
|
|
1446
|
|
|
1447 return NGX_CONF_OK;
|
|
|
1448 }
|
