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76
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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_event_connect.h>
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11 #include <ngx_imap.h>
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12
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13
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14 typedef struct {
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15 ngx_flag_t enable;
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88
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16 size_t buffer_size;
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17 ngx_msec_t timeout;
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76
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18 } ngx_imap_proxy_conf_t;
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19
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20
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21 static void ngx_imap_proxy_block_read(ngx_event_t *rev);
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22 static void ngx_imap_proxy_imap_handler(ngx_event_t *rev);
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23 static void ngx_imap_proxy_pop3_handler(ngx_event_t *rev);
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24 static void ngx_imap_proxy_dummy_handler(ngx_event_t *ev);
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25 static ngx_int_t ngx_imap_proxy_read_response(ngx_imap_session_t *s,
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26 ngx_uint_t what);
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27 static void ngx_imap_proxy_handler(ngx_event_t *ev);
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28 static void ngx_imap_proxy_internal_server_error(ngx_imap_session_t *s);
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29 static void ngx_imap_proxy_close_session(ngx_imap_session_t *s);
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30 static void *ngx_imap_proxy_create_conf(ngx_conf_t *cf);
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31 static char *ngx_imap_proxy_merge_conf(ngx_conf_t *cf, void *parent,
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32 void *child);
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33
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34
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120
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35 #define NGX_IMAP_WAIT_OK 0
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36 #define NGX_IMAP_WAIT_NEXT 1
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76
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37
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38
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39 static ngx_command_t ngx_imap_proxy_commands[] = {
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88
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40
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76
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41 { ngx_string("proxy"),
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42 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_FLAG,
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43 ngx_conf_set_flag_slot,
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44 NGX_IMAP_SRV_CONF_OFFSET,
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45 offsetof(ngx_imap_proxy_conf_t, enable),
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46 NULL },
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47
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88
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48 { ngx_string("proxy_buffer"),
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49 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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50 ngx_conf_set_size_slot,
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51 NGX_IMAP_SRV_CONF_OFFSET,
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52 offsetof(ngx_imap_proxy_conf_t, buffer_size),
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53 NULL },
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54
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55 { ngx_string("proxy_timeout"),
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56 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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57 ngx_conf_set_msec_slot,
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58 NGX_IMAP_SRV_CONF_OFFSET,
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59 offsetof(ngx_imap_proxy_conf_t, timeout),
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60 NULL },
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61
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76
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62 ngx_null_command
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63 };
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64
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65
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66 static ngx_imap_module_t ngx_imap_proxy_module_ctx = {
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67 NULL, /* create main configuration */
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68 NULL, /* init main configuration */
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69
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70 ngx_imap_proxy_create_conf, /* create server configuration */
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71 ngx_imap_proxy_merge_conf /* merge server configuration */
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72 };
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73
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74
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75 ngx_module_t ngx_imap_proxy_module = {
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76 NGX_MODULE_V1,
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77 &ngx_imap_proxy_module_ctx, /* module context */
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78 ngx_imap_proxy_commands, /* module directives */
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79 NGX_IMAP_MODULE, /* module type */
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90
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80 NULL, /* init master */
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76
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81 NULL, /* init module */
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90
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82 NULL, /* init process */
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83 NULL, /* init thread */
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84 NULL, /* exit thread */
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85 NULL, /* exit process */
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86 NULL, /* exit master */
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87 NGX_MODULE_V1_PADDING
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76
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88 };
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89
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90
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91 void
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92 ngx_imap_proxy_init(ngx_imap_session_t *s, ngx_peers_t *peers)
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93 {
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94 ngx_int_t rc;
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95 ngx_imap_proxy_ctx_t *p;
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96 ngx_imap_core_srv_conf_t *cscf;
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97
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98 p = ngx_pcalloc(s->connection->pool, sizeof(ngx_imap_proxy_ctx_t));
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99 if (p == NULL) {
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100 ngx_imap_session_internal_server_error(s);
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101 return;
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102 }
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103
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104 s->proxy = p;
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105
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106 p->upstream.peers = peers;
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107 p->upstream.log = s->connection->log;
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108 p->upstream.log_error = NGX_ERROR_ERR;
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109
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90
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110 s->connection->log->action = "in upstream auth state";
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111
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76
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112 rc = ngx_event_connect_peer(&p->upstream);
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113
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92
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114 if (rc == NGX_ERROR || rc == NGX_BUSY || rc == NGX_DECLINED) {
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115 ngx_imap_proxy_internal_server_error(s);
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76
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116 return;
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117 }
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118
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119 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
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120 ngx_add_timer(p->upstream.connection->read, cscf->timeout);
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121
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122 p->upstream.connection->data = s;
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123 p->upstream.connection->pool = s->connection->pool;
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124
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125 s->connection->read->handler = ngx_imap_proxy_block_read;
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126 p->upstream.connection->write->handler = ngx_imap_proxy_dummy_handler;
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127
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128 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
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129 p->upstream.connection->read->handler = ngx_imap_proxy_pop3_handler;
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130 s->imap_state = ngx_pop3_start;
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131
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132 } else {
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133 p->upstream.connection->read->handler = ngx_imap_proxy_imap_handler;
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134 s->imap_state = ngx_imap_start;
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135 }
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136 }
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137
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138
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139 static void
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140 ngx_imap_proxy_block_read(ngx_event_t *rev)
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141 {
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142 ngx_connection_t *c;
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143 ngx_imap_session_t *s;
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144
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145 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy block read");
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146
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147 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
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148 c = rev->data;
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149 s = c->data;
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150
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151 ngx_imap_proxy_close_session(s);
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152 }
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153 }
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154
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155
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156 static void
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157 ngx_imap_proxy_imap_handler(ngx_event_t *rev)
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158 {
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88
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159 u_char *p;
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160 ngx_int_t rc;
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161 ngx_str_t line;
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162 ngx_connection_t *c;
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163 ngx_imap_session_t *s;
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164 ngx_imap_proxy_conf_t *pcf;
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76
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165
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166 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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167 "imap proxy imap auth handler");
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168
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169 c = rev->data;
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170 s = c->data;
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171
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172 if (rev->timedout) {
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173 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
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174 "upstream timed out");
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126
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175 c->timedout = 1;
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76
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176 ngx_imap_proxy_internal_server_error(s);
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177 return;
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178 }
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179
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180 if (s->proxy->buffer == NULL) {
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88
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181 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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182
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88
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183 s->proxy->buffer = ngx_create_temp_buf(c->pool, pcf->buffer_size);
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76
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184 if (s->proxy->buffer == NULL) {
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185 ngx_imap_proxy_internal_server_error(s);
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186 return;
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187 }
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188 }
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189
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190 rc = ngx_imap_proxy_read_response(s, s->imap_state == ngx_imap_start ?
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191 NGX_IMAP_WAIT_OK : NGX_IMAP_WAIT_NEXT);
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192
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193 if (rc == NGX_AGAIN) {
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194 return;
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195 }
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196
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120
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197 if (rc == NGX_ERROR) {
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76
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198 ngx_imap_proxy_internal_server_error(s);
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199 return;
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200 }
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201
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202 switch (s->imap_state) {
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203
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204 case ngx_imap_start:
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205 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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206 "imap proxy send login");
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207
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208 line.len = s->tag.len + sizeof("LOGIN ") - 1
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209 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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210 line.data = ngx_palloc(c->pool, line.len);
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211 if (line.data == NULL) {
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212 ngx_imap_proxy_internal_server_error(s);
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213 return;
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214 }
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215
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216 line.len = ngx_sprintf(line.data, "%VLOGIN {%uz}" CRLF,
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217 &s->tag, s->login.len)
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218 - line.data;
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219
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220 s->imap_state = ngx_imap_login;
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221 break;
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222
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223 case ngx_imap_login:
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224 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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225
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78
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226 line.len = s->login.len + 1 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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76
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227 line.data = ngx_palloc(c->pool, line.len);
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228 if (line.data == NULL) {
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229 ngx_imap_proxy_internal_server_error(s);
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230 return;
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231 }
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232
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78
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233 line.len = ngx_sprintf(line.data, "%V {%uz}" CRLF,
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76
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234 &s->login, s->passwd.len)
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235 - line.data;
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236
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237 s->imap_state = ngx_imap_user;
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238 break;
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239
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240 case ngx_imap_user:
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241 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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242 "imap proxy send passwd");
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243
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244 line.len = s->passwd.len + 2;
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245 line.data = ngx_palloc(c->pool, line.len);
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246 if (line.data == NULL) {
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247 ngx_imap_proxy_internal_server_error(s);
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248 return;
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249 }
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250
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251 p = ngx_cpymem(line.data, s->passwd.data, s->passwd.len);
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252 *p++ = CR; *p = LF;
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253
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254 s->imap_state = ngx_imap_passwd;
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255 break;
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256
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257 default:
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258 #if (NGX_SUPPRESS_WARN)
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259 line.len = 0;
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260 line.data = NULL;
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261 #endif
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262 break;
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263 }
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264
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88
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265 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
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76
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266 /*
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267 * we treat the incomplete sending as NGX_ERROR
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268 * because it is very strange here
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269 */
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270 ngx_imap_proxy_internal_server_error(s);
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271 return;
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272 }
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273
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274 s->proxy->buffer->pos = s->proxy->buffer->start;
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275 s->proxy->buffer->last = s->proxy->buffer->start;
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276
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277 if (s->imap_state == ngx_imap_passwd) {
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278 s->connection->read->handler = ngx_imap_proxy_handler;
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279 s->connection->write->handler = ngx_imap_proxy_handler;
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280 rev->handler = ngx_imap_proxy_handler;
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281 c->write->handler = ngx_imap_proxy_handler;
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80
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282
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88
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283 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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284 ngx_add_timer(s->connection->read, pcf->timeout);
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80
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285 ngx_del_timer(c->read);
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90
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286
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96
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287 c->log->action = NULL;
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288 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in");
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289
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90
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290 c->log->action = "proxying";
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76
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291 }
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292 }
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293
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294
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295 static void
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296 ngx_imap_proxy_pop3_handler(ngx_event_t *rev)
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297 {
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88
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298 u_char *p;
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299 ngx_int_t rc;
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300 ngx_str_t line;
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301 ngx_connection_t *c;
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302 ngx_imap_session_t *s;
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303 ngx_imap_proxy_conf_t *pcf;
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76
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304
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305 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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306 "imap proxy pop3 auth handler");
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307
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308 c = rev->data;
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309 s = c->data;
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310
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311 if (rev->timedout) {
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312 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
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313 "upstream timed out");
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126
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314 c->timedout = 1;
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76
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315 ngx_imap_proxy_internal_server_error(s);
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316 return;
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317 }
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318
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319 if (s->proxy->buffer == NULL) {
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88
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320 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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76
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321
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88
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322 s->proxy->buffer = ngx_create_temp_buf(c->pool, pcf->buffer_size);
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76
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323 if (s->proxy->buffer == NULL) {
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324 ngx_imap_proxy_internal_server_error(s);
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325 return;
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326 }
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327 }
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328
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329 rc = ngx_imap_proxy_read_response(s, NGX_IMAP_WAIT_OK);
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330
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331 if (rc == NGX_AGAIN) {
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332 return;
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333 }
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334
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120
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335 if (rc == NGX_ERROR) {
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76
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336 ngx_imap_proxy_internal_server_error(s);
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337 return;
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338 }
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339
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340 switch (s->imap_state) {
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341
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342 case ngx_pop3_start:
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343 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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344
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345 line.len = sizeof("USER ") - 1 + s->login.len + 2;
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346 line.data = ngx_palloc(c->pool, line.len);
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347 if (line.data == NULL) {
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348 ngx_imap_proxy_internal_server_error(s);
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349 return;
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350 }
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351
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352 p = ngx_cpymem(line.data, "USER ", sizeof("USER ") - 1);
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353 p = ngx_cpymem(p, s->login.data, s->login.len);
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354 *p++ = CR; *p = LF;
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355
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356 s->imap_state = ngx_pop3_user;
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357 break;
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358
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359 case ngx_pop3_user:
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360 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send pass");
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361
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362 line.len = sizeof("PASS ") - 1 + s->passwd.len + 2;
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363 line.data = ngx_palloc(c->pool, line.len);
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364 if (line.data == NULL) {
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365 ngx_imap_proxy_internal_server_error(s);
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366 return;
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367 }
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368
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369 p = ngx_cpymem(line.data, "PASS ", sizeof("PASS ") - 1);
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370 p = ngx_cpymem(p, s->passwd.data, s->passwd.len);
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371 *p++ = CR; *p = LF;
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372
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373 s->imap_state = ngx_pop3_passwd;
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374 break;
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375
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376 default:
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377 #if (NGX_SUPPRESS_WARN)
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378 line.len = 0;
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379 line.data = NULL;
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380 #endif
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381 break;
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382 }
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383
|
|
88
|
384 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
|
|
76
|
385 /*
|
|
|
386 * we treat the incomplete sending as NGX_ERROR
|
|
|
387 * because it is very strange here
|
|
|
388 */
|
|
|
389 ngx_imap_proxy_internal_server_error(s);
|
|
|
390 return;
|
|
|
391 }
|
|
|
392
|
|
|
393 s->proxy->buffer->pos = s->proxy->buffer->start;
|
|
|
394 s->proxy->buffer->last = s->proxy->buffer->start;
|
|
|
395
|
|
|
396 if (s->imap_state == ngx_pop3_passwd) {
|
|
|
397 s->connection->read->handler = ngx_imap_proxy_handler;
|
|
|
398 s->connection->write->handler = ngx_imap_proxy_handler;
|
|
|
399 rev->handler = ngx_imap_proxy_handler;
|
|
|
400 c->write->handler = ngx_imap_proxy_handler;
|
|
80
|
401
|
|
88
|
402 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
|
|
|
403 ngx_add_timer(s->connection->read, pcf->timeout);
|
|
80
|
404 ngx_del_timer(c->read);
|
|
90
|
405
|
|
96
|
406 c->log->action = NULL;
|
|
|
407 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in");
|
|
|
408
|
|
90
|
409 c->log->action = "proxying";
|
|
76
|
410 }
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static void
|
|
|
415 ngx_imap_proxy_dummy_handler(ngx_event_t *ev)
|
|
|
416 {
|
|
|
417 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0, "imap proxy dummy handler");
|
|
|
418 }
|
|
|
419
|
|
|
420
|
|
|
421 static ngx_int_t
|
|
|
422 ngx_imap_proxy_read_response(ngx_imap_session_t *s, ngx_uint_t what)
|
|
|
423 {
|
|
|
424 u_char *p;
|
|
|
425 ssize_t n;
|
|
|
426 ngx_buf_t *b;
|
|
|
427
|
|
|
428 b = s->proxy->buffer;
|
|
|
429
|
|
88
|
430 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection,
|
|
|
431 b->last, b->end - b->last);
|
|
76
|
432
|
|
|
433 if (n == NGX_ERROR || n == 0) {
|
|
|
434 return NGX_ERROR;
|
|
|
435 }
|
|
|
436
|
|
|
437 if (n == NGX_AGAIN) {
|
|
|
438 return NGX_AGAIN;
|
|
|
439 }
|
|
|
440
|
|
|
441 b->last += n;
|
|
|
442
|
|
|
443 if (b->last - b->pos < 5) {
|
|
|
444 return NGX_AGAIN;
|
|
|
445 }
|
|
|
446
|
|
|
447 if (*(b->last - 2) != CR || *(b->last - 1) != LF) {
|
|
|
448 if (b->last == b->end) {
|
|
|
449 *(b->last - 1) = '\0';
|
|
|
450 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
|
451 "upstream sent too long response line: \"%s\"",
|
|
|
452 b->pos);
|
|
120
|
453 return NGX_ERROR;
|
|
76
|
454 }
|
|
|
455
|
|
|
456 return NGX_AGAIN;
|
|
|
457 }
|
|
|
458
|
|
|
459 p = b->pos;
|
|
|
460
|
|
|
461 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
|
462 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') {
|
|
|
463 return NGX_OK;
|
|
|
464 }
|
|
|
465
|
|
|
466 } else {
|
|
|
467 if (what == NGX_IMAP_WAIT_OK) {
|
|
|
468 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') {
|
|
|
469 return NGX_OK;
|
|
|
470 }
|
|
|
471
|
|
|
472 } else {
|
|
78
|
473 if (p[0] == '+') {
|
|
76
|
474 return NGX_OK;
|
|
|
475 }
|
|
|
476 }
|
|
|
477 }
|
|
|
478
|
|
|
479 *(b->last - 2) = '\0';
|
|
|
480 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
|
481 "upstream sent invalid response: \"%s\"", p);
|
|
|
482
|
|
120
|
483 return NGX_ERROR;
|
|
76
|
484 }
|
|
|
485
|
|
|
486
|
|
|
487 static void
|
|
|
488 ngx_imap_proxy_handler(ngx_event_t *ev)
|
|
|
489 {
|
|
96
|
490 char *action;
|
|
88
|
491 size_t size;
|
|
|
492 ssize_t n;
|
|
|
493 ngx_buf_t *b;
|
|
|
494 ngx_uint_t again, do_write;
|
|
|
495 ngx_connection_t *c, *src, *dst;
|
|
|
496 ngx_imap_session_t *s;
|
|
|
497 ngx_imap_proxy_conf_t *pcf;
|
|
76
|
498
|
|
|
499 c = ev->data;
|
|
|
500 s = c->data;
|
|
|
501
|
|
|
502 if (ev->timedout) {
|
|
|
503 if (c == s->connection) {
|
|
|
504 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
505 "client timed out");
|
|
126
|
506 c->timedout = 1;
|
|
|
507
|
|
76
|
508 } else {
|
|
|
509 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
510 "upstream timed out");
|
|
|
511 }
|
|
|
512
|
|
|
513 ngx_imap_proxy_close_session(s);
|
|
|
514 return;
|
|
|
515 }
|
|
|
516
|
|
|
517 if (c == s->connection) {
|
|
|
518 if (ev->write) {
|
|
|
519 src = s->proxy->upstream.connection;
|
|
|
520 dst = c;
|
|
|
521 b = s->proxy->buffer;
|
|
|
522
|
|
|
523 } else {
|
|
|
524 src = c;
|
|
|
525 dst = s->proxy->upstream.connection;
|
|
|
526 b = s->buffer;
|
|
|
527 }
|
|
|
528
|
|
|
529 } else {
|
|
|
530 if (ev->write) {
|
|
|
531 src = s->connection;
|
|
|
532 dst = c;
|
|
|
533 b = s->buffer;
|
|
|
534
|
|
|
535 } else {
|
|
|
536 src = c;
|
|
|
537 dst = s->connection;
|
|
|
538 b = s->proxy->buffer;
|
|
|
539 }
|
|
|
540 }
|
|
|
541
|
|
|
542 do_write = ev->write ? 1 : 0;
|
|
|
543
|
|
|
544 ngx_log_debug3(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
|
545 "imap proxy handler: %d, #%d > #%d",
|
|
|
546 do_write, src->fd, dst->fd);
|
|
|
547
|
|
|
548 do {
|
|
|
549 again = 0;
|
|
|
550
|
|
|
551 if (do_write == 1) {
|
|
|
552
|
|
|
553 size = b->last - b->pos;
|
|
|
554
|
|
|
555 if (size && dst->write->ready) {
|
|
88
|
556 n = dst->send(dst, b->pos, size);
|
|
76
|
557
|
|
|
558 if (n == NGX_ERROR) {
|
|
|
559 ngx_imap_proxy_close_session(s);
|
|
|
560 return;
|
|
|
561 }
|
|
|
562
|
|
|
563 if (n > 0) {
|
|
|
564 again = 1;
|
|
|
565 b->pos += n;
|
|
|
566
|
|
|
567 if (b->pos == b->last) {
|
|
|
568 b->pos = b->start;
|
|
|
569 b->last = b->start;
|
|
|
570 }
|
|
|
571 }
|
|
|
572
|
|
|
573 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
|
574 if (ngx_handle_write_event(dst->write, /* TODO: LOWAT */ 0)
|
|
78
|
575 == NGX_ERROR)
|
|
76
|
576 {
|
|
|
577 ngx_imap_proxy_close_session(s);
|
|
|
578 return;
|
|
|
579 }
|
|
|
580 }
|
|
|
581 }
|
|
|
582 }
|
|
|
583
|
|
|
584 size = b->end - b->last;
|
|
|
585
|
|
|
586 if (size && src->read->ready) {
|
|
88
|
587 n = src->recv(src, b->last, size);
|
|
76
|
588
|
|
96
|
589 if (n == NGX_ERROR) {
|
|
|
590 ngx_imap_proxy_close_session(s);
|
|
|
591 return;
|
|
|
592 }
|
|
|
593
|
|
|
594 if (n == 0) {
|
|
|
595 action = c->log->action;
|
|
|
596 c->log->action = NULL;
|
|
|
597 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxied session done");
|
|
|
598 c->log->action = action;
|
|
|
599
|
|
76
|
600 ngx_imap_proxy_close_session(s);
|
|
|
601 return;
|
|
|
602 }
|
|
|
603
|
|
|
604 if (n > 0) {
|
|
|
605 again = 1;
|
|
|
606 do_write = 1;
|
|
|
607 b->last += n;
|
|
|
608 }
|
|
|
609
|
|
|
610 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
|
611 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) {
|
|
|
612 ngx_imap_proxy_close_session(s);
|
|
|
613 return;
|
|
|
614 }
|
|
|
615 }
|
|
88
|
616
|
|
|
617 if (c == s->connection) {
|
|
|
618 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
|
|
|
619 ngx_add_timer(c->read, pcf->timeout);
|
|
|
620 }
|
|
76
|
621 }
|
|
|
622
|
|
|
623 } while (again);
|
|
|
624 }
|
|
|
625
|
|
|
626
|
|
|
627 static void
|
|
|
628 ngx_imap_proxy_internal_server_error(ngx_imap_session_t *s)
|
|
|
629 {
|
|
|
630 if (s->proxy->upstream.connection) {
|
|
|
631 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
632 "close imap proxy connection: %d",
|
|
|
633 s->proxy->upstream.connection->fd);
|
|
|
634
|
|
|
635 ngx_close_connection(s->proxy->upstream.connection);
|
|
|
636 }
|
|
|
637
|
|
|
638 ngx_imap_session_internal_server_error(s);
|
|
|
639 }
|
|
|
640
|
|
|
641
|
|
|
642 static void
|
|
|
643 ngx_imap_proxy_close_session(ngx_imap_session_t *s)
|
|
|
644 {
|
|
|
645 if (s->proxy->upstream.connection) {
|
|
|
646 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
647 "close imap proxy connection: %d",
|
|
|
648 s->proxy->upstream.connection->fd);
|
|
|
649
|
|
|
650 ngx_close_connection(s->proxy->upstream.connection);
|
|
|
651 }
|
|
|
652
|
|
|
653 ngx_imap_close_connection(s->connection);
|
|
|
654 }
|
|
|
655
|
|
|
656
|
|
|
657 static void *
|
|
|
658 ngx_imap_proxy_create_conf(ngx_conf_t *cf)
|
|
126
|
659 {
|
|
76
|
660 ngx_imap_proxy_conf_t *pcf;
|
|
126
|
661
|
|
76
|
662 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_proxy_conf_t));
|
|
|
663 if (pcf == NULL) {
|
|
|
664 return NGX_CONF_ERROR;
|
|
|
665 }
|
|
|
666
|
|
|
667 pcf->enable = NGX_CONF_UNSET;
|
|
88
|
668 pcf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
669 pcf->timeout = NGX_CONF_UNSET_MSEC;
|
|
76
|
670
|
|
|
671 return pcf;
|
|
|
672 }
|
|
|
673
|
|
|
674
|
|
|
675 static char *
|
|
|
676 ngx_imap_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
677 {
|
|
|
678 ngx_imap_proxy_conf_t *prev = parent;
|
|
|
679 ngx_imap_proxy_conf_t *conf = child;
|
|
|
680
|
|
88
|
681 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
682 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,
|
|
|
683 (size_t) ngx_pagesize);
|
|
|
684 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000);
|
|
76
|
685
|
|
|
686 return NGX_CONF_OK;
|
|
|
687 }
|
