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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35 #define NGX_IMAP_WAIT_OK 0
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36 #define NGX_IMAP_WAIT_NEXT 1
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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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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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180 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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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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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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78
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196 if (rc == NGX_ERROR || rc == NGX_IMAP_PROXY_INVALID) {
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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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78
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201 if (rc == NGX_IMAP_PROXY_ERROR) {
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202 s->connection->read->handler = ngx_imap_proxy_handler;
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203 s->connection->write->handler = ngx_imap_proxy_handler;
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204 rev->handler = ngx_imap_proxy_handler;
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205 c->write->handler = ngx_imap_proxy_handler;
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206
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207 ngx_imap_proxy_handler(c->read);
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208 return;
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209 }
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210
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76
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211 switch (s->imap_state) {
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212
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213 case ngx_imap_start:
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214 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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215 "imap proxy send login");
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216
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217 line.len = s->tag.len + sizeof("LOGIN ") - 1
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218 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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219 line.data = ngx_palloc(c->pool, line.len);
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220 if (line.data == NULL) {
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221 ngx_imap_proxy_internal_server_error(s);
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222 return;
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223 }
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224
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225 line.len = ngx_sprintf(line.data, "%VLOGIN {%uz}" CRLF,
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226 &s->tag, s->login.len)
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227 - line.data;
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228
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229 s->imap_state = ngx_imap_login;
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230 break;
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231
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232 case ngx_imap_login:
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233 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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234
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235 line.len = s->login.len + 1 + 1 + NGX_SIZE_T_LEN + 1 + 2;
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236 line.data = ngx_palloc(c->pool, line.len);
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237 if (line.data == NULL) {
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238 ngx_imap_proxy_internal_server_error(s);
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239 return;
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240 }
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241
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78
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242 line.len = ngx_sprintf(line.data, "%V {%uz}" CRLF,
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243 &s->login, s->passwd.len)
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244 - line.data;
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245
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246 s->imap_state = ngx_imap_user;
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247 break;
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248
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249 case ngx_imap_user:
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250 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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251 "imap proxy send passwd");
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252
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253 line.len = s->passwd.len + 2;
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254 line.data = ngx_palloc(c->pool, line.len);
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255 if (line.data == NULL) {
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256 ngx_imap_proxy_internal_server_error(s);
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257 return;
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258 }
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259
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260 p = ngx_cpymem(line.data, s->passwd.data, s->passwd.len);
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261 *p++ = CR; *p = LF;
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262
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263 s->imap_state = ngx_imap_passwd;
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264 break;
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265
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266 default:
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267 #if (NGX_SUPPRESS_WARN)
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268 line.len = 0;
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269 line.data = NULL;
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270 #endif
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271 break;
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272 }
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273
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88
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274 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
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76
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275 /*
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276 * we treat the incomplete sending as NGX_ERROR
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277 * because it is very strange here
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278 */
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279 ngx_imap_proxy_internal_server_error(s);
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280 return;
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281 }
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282
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283 s->proxy->buffer->pos = s->proxy->buffer->start;
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284 s->proxy->buffer->last = s->proxy->buffer->start;
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285
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286 if (s->imap_state == ngx_imap_passwd) {
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287 s->connection->read->handler = ngx_imap_proxy_handler;
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288 s->connection->write->handler = ngx_imap_proxy_handler;
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289 rev->handler = ngx_imap_proxy_handler;
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290 c->write->handler = ngx_imap_proxy_handler;
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291
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292 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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293 ngx_add_timer(s->connection->read, pcf->timeout);
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294 ngx_del_timer(c->read);
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295
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296 c->log->action = "proxying";
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297 }
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298 }
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299
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300
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301 static void
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302 ngx_imap_proxy_pop3_handler(ngx_event_t *rev)
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303 {
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88
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304 u_char *p;
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305 ngx_int_t rc;
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306 ngx_str_t line;
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307 ngx_connection_t *c;
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308 ngx_imap_session_t *s;
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309 ngx_imap_proxy_conf_t *pcf;
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76
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310
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311 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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312 "imap proxy pop3 auth handler");
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313
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314 c = rev->data;
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315 s = c->data;
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316
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317 if (rev->timedout) {
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318 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
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319 "upstream timed out");
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320 ngx_imap_proxy_internal_server_error(s);
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321 return;
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322 }
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323
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324 if (s->proxy->buffer == NULL) {
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325 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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326
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327 s->proxy->buffer = ngx_create_temp_buf(c->pool, pcf->buffer_size);
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328 if (s->proxy->buffer == NULL) {
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329 ngx_imap_proxy_internal_server_error(s);
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330 return;
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331 }
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332 }
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333
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334 rc = ngx_imap_proxy_read_response(s, NGX_IMAP_WAIT_OK);
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335
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336 if (rc == NGX_AGAIN) {
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337 return;
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338 }
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339
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78
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340 if (rc == NGX_ERROR || rc == NGX_IMAP_PROXY_INVALID) {
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76
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341 ngx_imap_proxy_internal_server_error(s);
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342 return;
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343 }
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344
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78
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345 if (rc == NGX_IMAP_PROXY_ERROR) {
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346 s->connection->read->handler = ngx_imap_proxy_handler;
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347 s->connection->write->handler = ngx_imap_proxy_handler;
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348 rev->handler = ngx_imap_proxy_handler;
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349 c->write->handler = ngx_imap_proxy_handler;
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350
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351 ngx_imap_proxy_handler(c->read);
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352 return;
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353 }
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354
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76
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355 switch (s->imap_state) {
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356
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357 case ngx_pop3_start:
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358 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send user");
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359
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360 line.len = sizeof("USER ") - 1 + s->login.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, "USER ", sizeof("USER ") - 1);
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368 p = ngx_cpymem(p, s->login.data, s->login.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_user;
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372 break;
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373
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374 case ngx_pop3_user:
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375 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap proxy send pass");
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376
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377 line.len = sizeof("PASS ") - 1 + s->passwd.len + 2;
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378 line.data = ngx_palloc(c->pool, line.len);
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379 if (line.data == NULL) {
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380 ngx_imap_proxy_internal_server_error(s);
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381 return;
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382 }
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383
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384 p = ngx_cpymem(line.data, "PASS ", sizeof("PASS ") - 1);
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385 p = ngx_cpymem(p, s->passwd.data, s->passwd.len);
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386 *p++ = CR; *p = LF;
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387
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388 s->imap_state = ngx_pop3_passwd;
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389 break;
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390
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391 default:
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392 #if (NGX_SUPPRESS_WARN)
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393 line.len = 0;
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394 line.data = NULL;
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395 #endif
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396 break;
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397 }
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398
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88
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399 if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
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76
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400 /*
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401 * we treat the incomplete sending as NGX_ERROR
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402 * because it is very strange here
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403 */
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404 ngx_imap_proxy_internal_server_error(s);
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405 return;
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406 }
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407
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408 s->proxy->buffer->pos = s->proxy->buffer->start;
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409 s->proxy->buffer->last = s->proxy->buffer->start;
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410
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411 if (s->imap_state == ngx_pop3_passwd) {
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412 s->connection->read->handler = ngx_imap_proxy_handler;
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413 s->connection->write->handler = ngx_imap_proxy_handler;
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414 rev->handler = ngx_imap_proxy_handler;
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415 c->write->handler = ngx_imap_proxy_handler;
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80
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416
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88
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417 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
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418 ngx_add_timer(s->connection->read, pcf->timeout);
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80
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419 ngx_del_timer(c->read);
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90
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420
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421 c->log->action = "proxying";
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76
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422 }
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423 }
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424
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425
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426 static void
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427 ngx_imap_proxy_dummy_handler(ngx_event_t *ev)
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428 {
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429 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0, "imap proxy dummy handler");
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430 }
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431
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432
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433 static ngx_int_t
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434 ngx_imap_proxy_read_response(ngx_imap_session_t *s, ngx_uint_t what)
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435 {
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436 u_char *p;
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437 ssize_t n;
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438 ngx_buf_t *b;
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439
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440 b = s->proxy->buffer;
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441
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88
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442 n = s->proxy->upstream.connection->recv(s->proxy->upstream.connection,
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443 b->last, b->end - b->last);
|
76
|
444
|
|
445 if (n == NGX_ERROR || n == 0) {
|
|
446 return NGX_ERROR;
|
|
447 }
|
|
448
|
|
449 if (n == NGX_AGAIN) {
|
|
450 return NGX_AGAIN;
|
|
451 }
|
|
452
|
|
453 b->last += n;
|
|
454
|
|
455 if (b->last - b->pos < 5) {
|
|
456 return NGX_AGAIN;
|
|
457 }
|
|
458
|
|
459 if (*(b->last - 2) != CR || *(b->last - 1) != LF) {
|
|
460 if (b->last == b->end) {
|
|
461 *(b->last - 1) = '\0';
|
|
462 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
463 "upstream sent too long response line: \"%s\"",
|
|
464 b->pos);
|
|
465 return NGX_IMAP_PROXY_INVALID;
|
|
466 }
|
|
467
|
|
468 return NGX_AGAIN;
|
|
469 }
|
|
470
|
|
471 p = b->pos;
|
|
472
|
|
473 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
474 if (p[0] == '+' && p[1] == 'O' && p[2] == 'K') {
|
|
475 return NGX_OK;
|
|
476 }
|
|
477
|
|
478 if (p[0] == '-' && p[1] == 'E' && p[2] == 'R' && p[3] == 'R') {
|
|
479 return NGX_IMAP_PROXY_ERROR;
|
|
480 }
|
|
481
|
|
482 } else {
|
78
|
483 if (p[0] == 'N' && p[1] == 'O') {
|
|
484 return NGX_IMAP_PROXY_ERROR;
|
|
485 }
|
|
486
|
76
|
487 if (what == NGX_IMAP_WAIT_OK) {
|
|
488 if (p[0] == '*' && p[1] == ' ' && p[2] == 'O' && p[3] == 'K') {
|
|
489 return NGX_OK;
|
|
490 }
|
|
491
|
|
492 } else {
|
78
|
493 if (p[0] == '+') {
|
76
|
494 return NGX_OK;
|
|
495 }
|
|
496 }
|
|
497 }
|
|
498
|
|
499 *(b->last - 2) = '\0';
|
|
500 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
501 "upstream sent invalid response: \"%s\"", p);
|
|
502
|
|
503 return NGX_IMAP_PROXY_INVALID;
|
|
504 }
|
|
505
|
|
506
|
|
507 static void
|
|
508 ngx_imap_proxy_handler(ngx_event_t *ev)
|
|
509 {
|
88
|
510 size_t size;
|
|
511 ssize_t n;
|
|
512 ngx_buf_t *b;
|
|
513 ngx_uint_t again, do_write;
|
|
514 ngx_connection_t *c, *src, *dst;
|
|
515 ngx_imap_session_t *s;
|
|
516 ngx_imap_proxy_conf_t *pcf;
|
76
|
517
|
|
518 c = ev->data;
|
|
519 s = c->data;
|
|
520
|
|
521 if (ev->timedout) {
|
|
522 if (c == s->connection) {
|
|
523 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
524 "client timed out");
|
|
525 } else {
|
|
526 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
527 "upstream timed out");
|
|
528 }
|
|
529
|
|
530 ngx_imap_proxy_close_session(s);
|
|
531 return;
|
|
532 }
|
|
533
|
|
534 if (c == s->connection) {
|
|
535 if (ev->write) {
|
|
536 src = s->proxy->upstream.connection;
|
|
537 dst = c;
|
|
538 b = s->proxy->buffer;
|
|
539
|
|
540 } else {
|
|
541 src = c;
|
|
542 dst = s->proxy->upstream.connection;
|
|
543 b = s->buffer;
|
|
544 }
|
|
545
|
|
546 } else {
|
|
547 if (ev->write) {
|
|
548 src = s->connection;
|
|
549 dst = c;
|
|
550 b = s->buffer;
|
|
551
|
|
552 } else {
|
|
553 src = c;
|
|
554 dst = s->connection;
|
|
555 b = s->proxy->buffer;
|
|
556 }
|
|
557 }
|
|
558
|
|
559 do_write = ev->write ? 1 : 0;
|
|
560
|
|
561 ngx_log_debug3(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
562 "imap proxy handler: %d, #%d > #%d",
|
|
563 do_write, src->fd, dst->fd);
|
|
564
|
|
565 do {
|
|
566 again = 0;
|
|
567
|
|
568 if (do_write == 1) {
|
|
569
|
|
570 size = b->last - b->pos;
|
|
571
|
|
572 if (size && dst->write->ready) {
|
88
|
573 n = dst->send(dst, b->pos, size);
|
76
|
574
|
|
575 if (n == NGX_ERROR) {
|
|
576 ngx_imap_proxy_close_session(s);
|
|
577 return;
|
|
578 }
|
|
579
|
|
580 if (n > 0) {
|
|
581 again = 1;
|
|
582 b->pos += n;
|
|
583
|
|
584 if (b->pos == b->last) {
|
|
585 b->pos = b->start;
|
|
586 b->last = b->start;
|
|
587 }
|
|
588 }
|
|
589
|
|
590 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
591 if (ngx_handle_write_event(dst->write, /* TODO: LOWAT */ 0)
|
78
|
592 == NGX_ERROR)
|
76
|
593 {
|
|
594 ngx_imap_proxy_close_session(s);
|
|
595 return;
|
|
596 }
|
|
597 }
|
|
598 }
|
|
599 }
|
|
600
|
|
601 size = b->end - b->last;
|
|
602
|
|
603 if (size && src->read->ready) {
|
88
|
604 n = src->recv(src, b->last, size);
|
76
|
605
|
|
606 if (n == NGX_ERROR || n == 0) {
|
|
607 ngx_imap_proxy_close_session(s);
|
|
608 return;
|
|
609 }
|
|
610
|
|
611 if (n > 0) {
|
|
612 again = 1;
|
|
613 do_write = 1;
|
|
614 b->last += n;
|
|
615 }
|
|
616
|
|
617 if (n == NGX_AGAIN || n < (ssize_t) size) {
|
|
618 if (ngx_handle_read_event(src->read, 0) == NGX_ERROR) {
|
|
619 ngx_imap_proxy_close_session(s);
|
|
620 return;
|
|
621 }
|
|
622 }
|
88
|
623
|
|
624 if (c == s->connection) {
|
|
625 pcf = ngx_imap_get_module_srv_conf(s, ngx_imap_proxy_module);
|
|
626 ngx_add_timer(c->read, pcf->timeout);
|
|
627 }
|
76
|
628 }
|
|
629
|
|
630 } while (again);
|
|
631 }
|
|
632
|
|
633
|
|
634 static void
|
|
635 ngx_imap_proxy_internal_server_error(ngx_imap_session_t *s)
|
|
636 {
|
|
637 if (s->proxy->upstream.connection) {
|
|
638 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
639 "close imap proxy connection: %d",
|
|
640 s->proxy->upstream.connection->fd);
|
|
641
|
|
642 ngx_close_connection(s->proxy->upstream.connection);
|
|
643 }
|
|
644
|
|
645 ngx_imap_session_internal_server_error(s);
|
|
646 }
|
|
647
|
|
648
|
|
649 static void
|
|
650 ngx_imap_proxy_close_session(ngx_imap_session_t *s)
|
|
651 {
|
|
652 if (s->proxy->upstream.connection) {
|
|
653 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
654 "close imap proxy connection: %d",
|
|
655 s->proxy->upstream.connection->fd);
|
|
656
|
|
657 ngx_close_connection(s->proxy->upstream.connection);
|
|
658 }
|
|
659
|
|
660 ngx_imap_close_connection(s->connection);
|
|
661 }
|
|
662
|
|
663
|
|
664 static void *
|
|
665 ngx_imap_proxy_create_conf(ngx_conf_t *cf)
|
|
666 {
|
|
667 ngx_imap_proxy_conf_t *pcf;
|
|
668
|
|
669 pcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_proxy_conf_t));
|
|
670 if (pcf == NULL) {
|
|
671 return NGX_CONF_ERROR;
|
|
672 }
|
|
673
|
|
674 pcf->enable = NGX_CONF_UNSET;
|
88
|
675 pcf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
676 pcf->timeout = NGX_CONF_UNSET_MSEC;
|
76
|
677
|
|
678 return pcf;
|
|
679 }
|
|
680
|
|
681
|
|
682 static char *
|
|
683 ngx_imap_proxy_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
684 {
|
|
685 ngx_imap_proxy_conf_t *prev = parent;
|
|
686 ngx_imap_proxy_conf_t *conf = child;
|
|
687
|
88
|
688 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
689 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,
|
|
690 (size_t) ngx_pagesize);
|
|
691 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 24 * 60 * 60000);
|
76
|
692
|
|
693 return NGX_CONF_OK;
|
|
694 }
|