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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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175 ngx_imap_proxy_internal_server_error(s);
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176 return;
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177 }
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178
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179 if (s->proxy->buffer == NULL) {
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88
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180 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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76
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181
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182 s->proxy->buffer = ngx_create_temp_buf(c->pool, pcf->buffer_size);
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76
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183 if (s->proxy->buffer == NULL) {
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184 ngx_imap_proxy_internal_server_error(s);
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185 return;
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186 }
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187 }
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188
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189 rc = ngx_imap_proxy_read_response(s, s->imap_state == ngx_imap_start ?
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190 NGX_IMAP_WAIT_OK : NGX_IMAP_WAIT_NEXT);
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191
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192 if (rc == NGX_AGAIN) {
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193 return;
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194 }
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195
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120
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196 if (rc == NGX_ERROR) {
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76
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197 ngx_imap_proxy_internal_server_error(s);
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198 return;
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199 }
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200
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201 switch (s->imap_state) {
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202
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203 case ngx_imap_start:
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204 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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205 "imap proxy send login");
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206
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207 line.len = s->tag.len + sizeof("LOGIN ") - 1
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208 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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209 line.data = ngx_palloc(c->pool, line.len);
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210 if (line.data == NULL) {
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211 ngx_imap_proxy_internal_server_error(s);
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212 return;
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213 }
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214
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215 line.len = ngx_sprintf(line.data, "%VLOGIN {%uz}" CRLF,
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216 &s->tag, s->login.len)
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217 - line.data;
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218
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219 s->imap_state = ngx_imap_login;
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220 break;
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221
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222 case ngx_imap_login:
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223 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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224
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78
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225 line.len = s->login.len + 1 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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76
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226 line.data = ngx_palloc(c->pool, line.len);
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227 if (line.data == NULL) {
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228 ngx_imap_proxy_internal_server_error(s);
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229 return;
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230 }
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231
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78
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232 line.len = ngx_sprintf(line.data, "%V {%uz}" CRLF,
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233 &s->login, s->passwd.len)
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234 - line.data;
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235
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236 s->imap_state = ngx_imap_user;
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237 break;
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238
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239 case ngx_imap_user:
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240 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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241 "imap proxy send passwd");
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242
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243 line.len = s->passwd.len + 2;
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244 line.data = ngx_palloc(c->pool, line.len);
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245 if (line.data == NULL) {
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246 ngx_imap_proxy_internal_server_error(s);
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247 return;
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248 }
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249
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250 p = ngx_cpymem(line.data, s->passwd.data, s->passwd.len);
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251 *p++ = CR; *p = LF;
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252
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253 s->imap_state = ngx_imap_passwd;
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254 break;
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255
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256 default:
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257 #if (NGX_SUPPRESS_WARN)
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258 line.len = 0;
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259 line.data = NULL;
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260 #endif
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261 break;
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262 }
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263
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88
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264 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
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76
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265 /*
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266 * we treat the incomplete sending as NGX_ERROR
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267 * because it is very strange here
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268 */
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269 ngx_imap_proxy_internal_server_error(s);
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270 return;
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271 }
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272
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273 s->proxy->buffer->pos = s->proxy->buffer->start;
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274 s->proxy->buffer->last = s->proxy->buffer->start;
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275
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276 if (s->imap_state == ngx_imap_passwd) {
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277 s->connection->read->handler = ngx_imap_proxy_handler;
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278 s->connection->write->handler = ngx_imap_proxy_handler;
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279 rev->handler = ngx_imap_proxy_handler;
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280 c->write->handler = ngx_imap_proxy_handler;
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80
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281
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88
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282 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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283 ngx_add_timer(s->connection->read, pcf->timeout);
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80
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284 ngx_del_timer(c->read);
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90
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285
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96
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286 c->log->action = NULL;
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287 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in");
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288
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90
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289 c->log->action = "proxying";
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76
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290 }
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291 }
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292
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293
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294 static void
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295 ngx_imap_proxy_pop3_handler(ngx_event_t *rev)
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296 {
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88
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297 u_char *p;
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298 ngx_int_t rc;
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299 ngx_str_t line;
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300 ngx_connection_t *c;
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301 ngx_imap_session_t *s;
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302 ngx_imap_proxy_conf_t *pcf;
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76
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303
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304 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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305 "imap proxy pop3 auth handler");
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306
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307 c = rev->data;
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308 s = c->data;
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309
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310 if (rev->timedout) {
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311 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
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312 "upstream timed out");
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313 ngx_imap_proxy_internal_server_error(s);
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314 return;
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315 }
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316
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317 if (s->proxy->buffer == NULL) {
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88
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318 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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76
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319
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88
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320 s->proxy->buffer = ngx_create_temp_buf(c->pool, pcf->buffer_size);
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76
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321 if (s->proxy->buffer == NULL) {
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322 ngx_imap_proxy_internal_server_error(s);
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323 return;
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324 }
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325 }
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326
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327 rc = ngx_imap_proxy_read_response(s, NGX_IMAP_WAIT_OK);
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328
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329 if (rc == NGX_AGAIN) {
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330 return;
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331 }
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332
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120
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333 if (rc == NGX_ERROR) {
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76
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334 ngx_imap_proxy_internal_server_error(s);
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335 return;
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336 }
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337
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338 switch (s->imap_state) {
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339
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340 case ngx_pop3_start:
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341 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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342
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343 line.len = sizeof("USER ") - 1 + s->login.len + 2;
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344 line.data = ngx_palloc(c->pool, line.len);
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345 if (line.data == NULL) {
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346 ngx_imap_proxy_internal_server_error(s);
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347 return;
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348 }
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349
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350 p = ngx_cpymem(line.data, "USER ", sizeof("USER ") - 1);
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351 p = ngx_cpymem(p, s->login.data, s->login.len);
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352 *p++ = CR; *p = LF;
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353
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354 s->imap_state = ngx_pop3_user;
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355 break;
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356
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357 case ngx_pop3_user:
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358 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send pass");
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359
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360 line.len = sizeof("PASS ") - 1 + s->passwd.len + 2;
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361 line.data = ngx_palloc(c->pool, line.len);
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362 if (line.data == NULL) {
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363 ngx_imap_proxy_internal_server_error(s);
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364 return;
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365 }
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366
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367 p = ngx_cpymem(line.data, "PASS ", sizeof("PASS ") - 1);
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368 p = ngx_cpymem(p, s->passwd.data, s->passwd.len);
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369 *p++ = CR; *p = LF;
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370
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371 s->imap_state = ngx_pop3_passwd;
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372 break;
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373
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374 default:
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375 #if (NGX_SUPPRESS_WARN)
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376 line.len = 0;
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377 line.data = NULL;
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378 #endif
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379 break;
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380 }
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381
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88
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382 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
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76
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383 /*
|
|
|
384 * we treat the incomplete sending as NGX_ERROR
|
|
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385 * because it is very strange here
|
|
|
386 */
|
|
|
387 ngx_imap_proxy_internal_server_error(s);
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|
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388 return;
|
|
|
389 }
|
|
|
390
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|
|
391 s->proxy->buffer->pos = s->proxy->buffer->start;
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|
|
392 s->proxy->buffer->last = s->proxy->buffer->start;
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393
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|
|
394 if (s->imap_state == ngx_pop3_passwd) {
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395 s->connection->read->handler = ngx_imap_proxy_handler;
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|
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396 s->connection->write->handler = ngx_imap_proxy_handler;
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|
397 rev->handler = ngx_imap_proxy_handler;
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|
|
398 c->write->handler = ngx_imap_proxy_handler;
|
|
80
|
399
|
|
88
|
400 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
|
|
|
401 ngx_add_timer(s->connection->read, pcf->timeout);
|
|
80
|
402 ngx_del_timer(c->read);
|
|
90
|
403
|
|
96
|
404 c->log->action = NULL;
|
|
|
405 ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in");
|
|
|
406
|
|
90
|
407 c->log->action = "proxying";
|
|
76
|
408 }
|
|
|
409 }
|
|
|
410
|
|
|
411
|
|
|
412 static void
|
|
|
413 ngx_imap_proxy_dummy_handler(ngx_event_t *ev)
|
|
|
414 {
|
|
|
415 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0, "imap proxy dummy handler");
|
|
|
416 }
|
|
|
417
|
|
|
418
|
|
|
419 static ngx_int_t
|
|
|
420 ngx_imap_proxy_read_response(ngx_imap_session_t *s, ngx_uint_t what)
|
|
|
421 {
|
|
|
422 u_char *p;
|
|
|
423 ssize_t n;
|
|
|
424 ngx_buf_t *b;
|
|
|
425
|
|
|
426 b = s->proxy->buffer;
|
|
|
427
|
|
88
|
428 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection,
|
|
|
429 b->last, b->end - b->last);
|
|
76
|
430
|
|
|
431 if (n == NGX_ERROR || n == 0) {
|
|
|
432 return NGX_ERROR;
|
|
|
433 }
|
|
|
434
|
|
|
435 if (n == NGX_AGAIN) {
|
|
|
436 return NGX_AGAIN;
|
|
|
437 }
|
|
|
438
|
|
|
439 b->last += n;
|
|
|
440
|
|
|
441 if (b->last - b->pos < 5) {
|
|
|
442 return NGX_AGAIN;
|
|
|
443 }
|
|
|
444
|
|
|
445 if (*(b->last - 2) != CR || *(b->last - 1) != LF) {
|
|
|
446 if (b->last == b->end) {
|
|
|
447 *(b->last - 1) = '\0';
|
|
|
448 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
|
449 "upstream sent too long response line: \"%s\"",
|
|
|
450 b->pos);
|
|
120
|
451 return NGX_ERROR;
|
|
76
|
452 }
|
|
|
453
|
|
|
454 return NGX_AGAIN;
|
|
|
455 }
|
|
|
456
|
|
|
457 p = b->pos;
|
|
|
458
|
|
|
459 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
|
460 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') {
|
|
|
461 return NGX_OK;
|
|
|
462 }
|
|
|
463
|
|
|
464 } else {
|
|
|
465 if (what == NGX_IMAP_WAIT_OK) {
|
|
|
466 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') {
|
|
|
467 return NGX_OK;
|
|
|
468 }
|
|
|
469
|
|
|
470 } else {
|
|
78
|
471 if (p[0] == '+') {
|
|
76
|
472 return NGX_OK;
|
|
|
473 }
|
|
|
474 }
|
|
|
475 }
|
|
|
476
|
|
|
477 *(b->last - 2) = '\0';
|
|
|
478 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
|
479 "upstream sent invalid response: \"%s\"", p);
|
|
|
480
|
|
120
|
481 return NGX_ERROR;
|
|
76
|
482 }
|
|
|
483
|
|
|
484
|
|
|
485 static void
|
|
|
486 ngx_imap_proxy_handler(ngx_event_t *ev)
|
|
|
487 {
|
|
96
|
488 char *action;
|
|
88
|
489 size_t size;
|
|
|
490 ssize_t n;
|
|
|
491 ngx_buf_t *b;
|
|
|
492 ngx_uint_t again, do_write;
|
|
|
493 ngx_connection_t *c, *src, *dst;
|
|
|
494 ngx_imap_session_t *s;
|
|
|
495 ngx_imap_proxy_conf_t *pcf;
|
|
76
|
496
|
|
|
497 c = ev->data;
|
|
|
498 s = c->data;
|
|
|
499
|
|
|
500 if (ev->timedout) {
|
|
|
501 if (c == s->connection) {
|
|
|
502 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
503 "client timed out");
|
|
|
504 } else {
|
|
|
505 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
506 "upstream timed out");
|
|
|
507 }
|
|
|
508
|
|
|
509 ngx_imap_proxy_close_session(s);
|
|
|
510 return;
|
|
|
511 }
|
|
|
512
|
|
|
513 if (c == s->connection) {
|
|
|
514 if (ev->write) {
|
|
|
515 src = s->proxy->upstream.connection;
|
|
|
516 dst = c;
|
|
|
517 b = s->proxy->buffer;
|
|
|
518
|
|
|
519 } else {
|
|
|
520 src = c;
|
|
|
521 dst = s->proxy->upstream.connection;
|
|
|
522 b = s->buffer;
|
|
|
523 }
|
|
|
524
|
|
|
525 } else {
|
|
|
526 if (ev->write) {
|
|
|
527 src = s->connection;
|
|
|
528 dst = c;
|
|
|
529 b = s->buffer;
|
|
|
530
|
|
|
531 } else {
|
|
|
532 src = c;
|
|
|
533 dst = s->connection;
|
|
|
534 b = s->proxy->buffer;
|
|
|
535 }
|
|
|
536 }
|
|
|
537
|
|
|
538 do_write = ev->write ? 1 : 0;
|
|
|
539
|
|
|
540 ngx_log_debug3(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
|
541 "imap proxy handler: %d, #%d > #%d",
|
|
|
542 do_write, src->fd, dst->fd);
|
|
|
543
|
|
|
544 do {
|
|
|
545 again = 0;
|
|
|
546
|
|
|
547 if (do_write == 1) {
|
|
|
548
|
|
|
549 size = b->last - b->pos;
|
|
|
550
|
|
|
551 if (size && dst->write->ready) {
|
|
88
|
552 n = dst->send(dst, b->pos, size);
|
|
76
|
553
|
|
|
554 if (n == NGX_ERROR) {
|
|
|
555 ngx_imap_proxy_close_session(s);
|
|
|
556 return;
|
|
|
557 }
|
|
|
558
|
|
|
559 if (n > 0) {
|
|
|
560 again = 1;
|
|
|
561 b->pos += n;
|
|
|
562
|
|
|
563 if (b->pos == b->last) {
|
|
|
564 b->pos = b->start;
|
|
|
565 b->last = b->start;
|
|
|
566 }
|
|
|
567 }
|
|
|
568
|
|
|
569 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
|
570 if (ngx_handle_write_event(dst->write, /* TODO: LOWAT */ 0)
|
|
78
|
571 == NGX_ERROR)
|
|
76
|
572 {
|
|
|
573 ngx_imap_proxy_close_session(s);
|
|
|
574 return;
|
|
|
575 }
|
|
|
576 }
|
|
|
577 }
|
|
|
578 }
|
|
|
579
|
|
|
580 size = b->end - b->last;
|
|
|
581
|
|
|
582 if (size && src->read->ready) {
|
|
88
|
583 n = src->recv(src, b->last, size);
|
|
76
|
584
|
|
96
|
585 if (n == NGX_ERROR) {
|
|
|
586 ngx_imap_proxy_close_session(s);
|
|
|
587 return;
|
|
|
588 }
|
|
|
589
|
|
|
590 if (n == 0) {
|
|
|
591 action = c->log->action;
|
|
|
592 c->log->action = NULL;
|
|
|
593 ngx_log_error(NGX_LOG_INFO, c->log, 0, "proxied session done");
|
|
|
594 c->log->action = action;
|
|
|
595
|
|
76
|
596 ngx_imap_proxy_close_session(s);
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 if (n > 0) {
|
|
|
601 again = 1;
|
|
|
602 do_write = 1;
|
|
|
603 b->last += n;
|
|
|
604 }
|
|
|
605
|
|
|
606 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
|
607 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) {
|
|
|
608 ngx_imap_proxy_close_session(s);
|
|
|
609 return;
|
|
|
610 }
|
|
|
611 }
|
|
88
|
612
|
|
|
613 if (c == s->connection) {
|
|
|
614 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
|
|
|
615 ngx_add_timer(c->read, pcf->timeout);
|
|
|
616 }
|
|
76
|
617 }
|
|
|
618
|
|
|
619 } while (again);
|
|
|
620 }
|
|
|
621
|
|
|
622
|
|
|
623 static void
|
|
|
624 ngx_imap_proxy_internal_server_error(ngx_imap_session_t *s)
|
|
|
625 {
|
|
|
626 if (s->proxy->upstream.connection) {
|
|
|
627 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
628 "close imap proxy connection: %d",
|
|
|
629 s->proxy->upstream.connection->fd);
|
|
|
630
|
|
|
631 ngx_close_connection(s->proxy->upstream.connection);
|
|
|
632 }
|
|
|
633
|
|
|
634 ngx_imap_session_internal_server_error(s);
|
|
|
635 }
|
|
|
636
|
|
|
637
|
|
|
638 static void
|
|
|
639 ngx_imap_proxy_close_session(ngx_imap_session_t *s)
|
|
|
640 {
|
|
|
641 if (s->proxy->upstream.connection) {
|
|
|
642 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
643 "close imap proxy connection: %d",
|
|
|
644 s->proxy->upstream.connection->fd);
|
|
|
645
|
|
|
646 ngx_close_connection(s->proxy->upstream.connection);
|
|
|
647 }
|
|
|
648
|
|
|
649 ngx_imap_close_connection(s->connection);
|
|
|
650 }
|
|
|
651
|
|
|
652
|
|
|
653 static void *
|
|
|
654 ngx_imap_proxy_create_conf(ngx_conf_t *cf)
|
|
|
655 {
|
|
|
656 ngx_imap_proxy_conf_t *pcf;
|
|
|
657
|
|
|
658 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_proxy_conf_t));
|
|
|
659 if (pcf == NULL) {
|
|
|
660 return NGX_CONF_ERROR;
|
|
|
661 }
|
|
|
662
|
|
|
663 pcf->enable = NGX_CONF_UNSET;
|
|
88
|
664 pcf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
665 pcf->timeout = NGX_CONF_UNSET_MSEC;
|
|
76
|
666
|
|
|
667 return pcf;
|
|
|
668 }
|
|
|
669
|
|
|
670
|
|
|
671 static char *
|
|
|
672 ngx_imap_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
673 {
|
|
|
674 ngx_imap_proxy_conf_t *prev = parent;
|
|
|
675 ngx_imap_proxy_conf_t *conf = child;
|
|
|
676
|
|
88
|
677 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
678 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,
|
|
|
679 (size_t) ngx_pagesize);
|
|
|
680 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000);
|
|
76
|
681
|
|
|
682 return NGX_CONF_OK;
|
|
|
683 }
|
